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Cause and solution of abnormal pressure difference of bag filter equipment

The cause of abnormal pressure difference of bag filter and its solution. The dust cleaning system of the bag dust collector has 3 kinds of cleaning methods: timing, constant pressure and manual cleaning. The basic purpose of dust removing bag cleaning is to control and stabilize the pressure difference. How to find out the reasons and solutions if the pressure difference is abnormal in the bag filter equipment? .
The reason for the control of pressure difference by the equipment of the bag dust collector:
First, timing control differential pressure is simple, but not the most economical way.
Two, artificial timing does not ensure that every time the filter bag needs cleaning, it will be cleaned.
Three, usually, the pressure difference of the bag filter can be controlled, how much is it good, how much is it more scientific? The working experience of the company’s factory for many years, the running resistance of the common bag dust collector will be adjusted and controlled above 1000Pa, and the high is only 2500~3000Pa, if it is as high as 6000Pa, It is not normal, at this time we can judge that it is the problem that the dust bag or the dust collector equipment has a high resistance, or the problem of the burning of the cloth bag.
Four. When the boiler coal industry used the bag filter in our country, the running resistance is also under 1000Pa, which can reduce the energy consumption of the dust collector, but this control reduces the efficiency of the dust removal, shortens the life of the filter bag, and the economic burden is also aggravated.
Biomass boiler dust collector (2)
Bag filter
A solution to the abnormal pressure difference of the bag dust collector
Reason check: (1) the dust of the dust bag is too much, it can be more troublesome through multiple vibration cleaning, cloth bag blockage (the import humidity is too large or the ignition oil does not burn out the adhesive bag), it may reduce the load operation or lead to the stop of the furnace according to the load of the fan.
Treatment measures: temporarily remove a filter chamber and then speed up ash transportation, and use the ash conveying power to carry out the reverse blow filter chamber.
(2) the dust removal device of bag filter has lost its proper function, making the dust layer adhered to the surface of cloth bag thicker and thicker resulting in sudden increase of pressure difference.
The cause of abnormal pressure difference of bag filter and its solution. More about the product knowledge of bag filter can contact us.
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Advantages and disadvantages of hydraulic press sensors

Advantages and disadvantages of hydraulic press sensors
As we all know, there are sensors on the hydraulic press, but most people do not know how many kinds of sensors exist in the hydraulic press. What are their advantages and disadvantages? The following is a brief introduction to you.
Semiconductor gas sensor: semiconductor gas sensor has become the most common and practical gas sensor. He has the advantages of low cost, simple manufacturing, high sensitivity, fast response, long life, low humidity sensitivity and simple circuit. The disadvantage is that it must work at high temperature, poor selectivity to gas or odor, dispersed component parameters, unstable stability and high power.
Electrochemical gas sensor: the electrochemical gas sensor detects the concentration of the gas by detecting the current, and divides it into a primary battery without power supply and a controlled potential electrolysis that needs power supply. At present, many toxic gases and oxygen can be detected, and the latter can also detect the oxygen concentration in the blood. The main advantages of electrochemical sensors are high sensitivity and good selectivity of gas, and short life.
Solid electrolyte gas sensor: solid electrolyte, which is a chemical cell with solid ion conduction as electrolyte. It is between semiconductors and electrochemistry. Selectivity, sensitivity is higher than semiconductor and life is longer than electrochemistry, so there are many applications. The drawback is that the response time is too long.
Contact combustion gas sensor: contact combustion gas sensor can only measure combustible gas. It is also divided into direct contact combustion and catalytic contact combustion. The principle is that the gas sensitive material is burned on the surface or under the action of catalyst under the state of electricity. Because the temperature of the gas sensitive material increases, the resistance of the gas sensitive material is changed. The latter is widely applied because of its broad spectrum relationship.
The above mentioned sensors on the hydraulic press have their own advantages and disadvantages. I hope you will have a good understanding of them.

6 tips on the success of the 3 months

An industry has been doing it for several years, and suddenly it is very difficult to change it. Many people tell me that freelancers are so cool. I also want to be. Can you tell me how to succeed in transition?
For transformation, the biggest difficulty is that it is economically difficult and risky.
But it’s not all the same. Chris once said, “natural talent will help you move forward, but it can’t protect you forever. You need entrepreneurship, but at the same time you need experience and patience to get things done. “
The specific recommendations are as follows:
01, upgrading skills
The cost of acquiring skills is now very low. You are sure of your new industry, so go to the class, or you can go to other relevant companies, and if you have an economic basis, go directly to the training class.
02, now start saving some money
Because in the transition period, you have to eat and drink, and you have to spend money on your studies. Now that you still have your salary, you can save a little bit every month. Maybe take money to make money, interest is also OK, the key is not to spend.
03, learn the knowledge of advertising marketing
What’s the usage? It’s very useful. You have to learn to sell yourself. Do you know why there are many talented poor people in the world? Because they don’t know how to sell themselves, they always feel that they are talented. They should be looking for him.
But the smell of wine is really afraid of the alley because the price of storefront is always higher than that of the alley.
So learn a point of marketing positioning knowledge, no matter what you do in the future, or as a freelancer, in the shortest possible time, let the interviewer clear your advantage, let customers find your personality characteristics.
04, reading, writing records
I suggest that you have the lowest cost, but the most effective thing, perhaps you do not love reading, and do not love writing, but for the future, insist on 6 months, enough.
Because after 6 months of persistence, you will find that you have fallen in love with these two things.
05, reduce the cost of life and temporarily reduce the living standard
In a difficult period, a difficult way is to be used. Why do you say you want to be wronged yourself? If you don’t feel wronged, then you can continue to feel wronged and do something you don’t like.
06, learning to change anxiety
There may be a blank period, you will be anxious, do not know if you can persist in this way, can you succeed? What do you do when you are sick and have no money to see a doctor? I’m not self disciplined enough to learn how to do it?
Try to learn to meditate. The first thing that many millionaires get up in the morning is meditation and reading. Now you think you’ve lived a millionaire’s life, and you can turn your anxiety well.
It is true that hard work and diligence are right, but the farther you can go, the spiritual driving force. After all, the body, we are still young now, and can survive.

The number of drawings in the machining of a lathe

1. Under no ready-made processing surface, the plane is divided into four sides, the center is opposite to the original point, the top face zero, and the top face is not normally (copper) to stay 0.1, that is, when the touch number is, the actual pair is 0 (z), and the figure is 0.1 lower.

2, when there is a ready-made processing surface, the ready-made image on the map faces 0 (z), and the plane can be divided into the middle. Otherwise, the actual side touch number (Dan Bian) processing surface should check the actual height, the width, the difference between the length and the drawing, and program according to the actual material. In general, the shape is first processed into the size of the graph and the shape of the graph is reprocessed.

3, when more than one position is needed, the first position (standard position) will be good for the other benchmarks and the gongs are all long and wide. All the next processing benchmarks should be based on the above processed surface.

4. Position the insert: put it in the whole, place the underneath a certain height, and then the drawing will also raise this height. The plane is locked in the whole partition, the height is locked with the silk under the map; the square is straight, the rough one can be divided into the maximum shape; cut a fixture, according to the fixture, the relative of the insert drawing and fixture. Position determination and place the origin of the drawing at the center point of the fixture.

Cutting path selection in CNC processing

1. Surface dredging
The key is the choice and face of the scope.
The area of tool path processing is based on the principle that the selected surface of the selected area is the terminating surface and the highest point to the lowest point where the tool can go down. The best surface is the whole body, and the boundary is only the area to be processed. The distance is less than half the diameter of the knife, because the other side has enough allowance to protect it automatically. It is best to extend the lowest line because there is a R gong at the lowest point.


The choice of knives: if the tool can not be helical or slash feed, or the area where the machining area can not enter the knife area, it will be closed for two times.


Before cutting the knife, it is necessary to open the rough area, especially the small angle, which includes two dimensional angle, three dimensional angle and the sealed area, otherwise the knife will be broken. Small partners who like machinery can focus on intuitive mechanical micro signals. The two time is rough: generally choose the range of 3D trenching, flat bottom knife, and can use planar trenching and shape tool path. In the case of no injury to other surfaces, the tool center to the selected boundary, generally not the boundary of repair, with a fast two-way angle as the situation, the spiral knife, the angle 1.5 degrees, 1, when the groove shape is bar, the spiral knife can not use the oblique line, generally open the filter, especially the surface of the rough surface, the plane can not be lower, the plane is not low, the plane can not be lower, the plane is not rough. In order to avoid the knife, the safety height can not be low.


Draw back: generally do not need to return the knife relatively, use absolute retreat knife, when there is no island, use the relative retracting knife.


2. Plane dredging
Milling a variety of plane, concave groove, when the milling part of the open plane, the need to set the boundary, the principle can be knife (greater than a knife diameter), the opening section is more than half a knife diameter, closed outside.


3. Shape
When the selected plane is suitable for the shape of the shape, the knife (plane shape) is raised with the shape of the shape. When the knife point and the knife point are one point, the knife z plane is not required to lift the knife, and the relative height is not used as much as possible; the correct direction is generally right (CIS).


4, the tool path setting of mechanical correction
The correction number is 21, instead of the computer correction, the feed is vertical feed, and the tool can not go beyond the R.


5, equal high shape
It is suitable for a closed surface. If the open face is four circles, it will seal the surface. If it is within four circles or not four circles, the range and height should be selected. For opening the rough condition, the machining distance in any plane is less than a knife diameter, if the diameter of a knife is larger than a knife, it will use a larger knife or two second high. Shape.


6. Surface streamline
With the best uniformity and dry brittleness, it is suitable for light knife to replace the contour.


7, radial knife Road
It is suitable for a large hole in the middle (Shao Yong). Note: the knife, the knife is not sharp, the knife is too long, the workpiece is too deep to walk around, the workpiece in the corner of the side of the surface should be divided into two knife Road, not the past, the edge of the knife when the best extension (with the arc line knife).

The clear angle of CNC processing

1, the clear angle of the clear angle here is a two-dimensional dead angle, which is not a part of the previous process, such as the light knife need to go to the place to clear the corner and then light knife, too small and big deep corner can be divided a few knives, do not use a knife to clear too many places.


2. Clear 3D corner: open some small troughs, some 3D corners.


3, easy to break the knife, we must consider such as fine knives, too long, too much processing capacity (mainly Z direction, depth direction).


4, knife Road: using two-dimensional shape, only clear the small angle (R0.8) and two-dimensional plane angle; with parallel knife Road, with the contour of the same height; a local knife can not go to the surface and the shape of the dead angle must be sealed first, the final clear corner, the small gap in the large surface generally first sealed up.

CNC processing medium light

1, medium light: steel and fine steel as curved surface.

2, principle: when the knife is thick, there are more layers and layers. It is a process to achieve better results when the light knife is used.

3, features: fast clearance, large knife flying knife can also, large feed, large spacing; no need to avoid the surface quality; the plane of the workpiece must not be light; the high shape of the workpiece does not use light, and when the high shape is open, the two processes can be put together, the surface allowance and the distance between the layer and the layer; need not light, also need not medium light, return One important factor is the working material, the harder the material is, the light is considered; the best processing direction of the medium is better than that of the light knife.

CNC machining light knife

Light knife is to meet the assembly requirements of various products and molds, so it is very prudent to provide different tool path settings and parameter settings according to different requirements.


1. The height of the knife and the final height of the light knife are changed to 0, and the tolerance design is less than 1 silk. There is no need to filter (the smaller the workpiece, the smaller the tolerance, the tolerance will affect the appearance).


2, the front mold and parting surface should achieve the best finish, and the back mold can be repeated.


3. The design of the tool path is determined by the following factors:
The specific shape (such as plane and other surfaces), steep surface and flat surface.
Whether there is a right angle between the two sides (the angle is separated).
Whether the two part requires different (whether to leave allowance, allowance, and the requirement of finish).
The problem of the protection surface in the light knife is a big problem. The error in the processed surface must be protected and protected according to the requirements of the surface. Scope protection, excluding error 0 protection, height range and plane coverage; protection surface protection.
When the knife path is extended, it is better to use arc cutter to process the edge of the blade in the light knife, otherwise the surface will be lengthened in advance.
The problem of cutting the knife in the light knife. Lift a knife to waste time, so try to avoid lifting a knife.
Method 1: set knife gap (small gap)
Method 2: cover, seal the lifting place (small gap).
Method 3: avoid the gap (large gap)
Method 4: extend to the same height when the contour is high
In the light knife, the first feed must be moved from outside the workpiece, avoiding vibration and bruising, and all light knives must be knives.
The problem of tool wear: when the workpiece is large, it needs more than one knife to finish the same workpiece.

Basic information of the pump

A pump is a machine for conveying liquid or supercharging liquid. It transmits the mechanical energy or other external energy of the original motive to the liquid to increase the energy of the liquid, which is mainly used to transport liquid including water, oil, acid and alkali, emulsion, suspension emulsion and liquid metal.
It can also transport liquids, gas mixtures and liquids containing suspended solids. The technical parameters of pump performance include flow rate, suction range, lift, shaft power, water power, efficiency and so on. According to different working principles, it can be divided into volume pumps, vane pumps and other types. The volume pump uses the change of the volume of its studio to transfer energy; the vane pump uses the interaction of the blade and water to transfer the energy, including the centrifugal pump, the axial flow pump and the mixed flow pump.

How to sell successfully

It’s not how much the Commission is, not the speed of promotion, not the completion of the task, rather than the display of capital. It’s that you have more than one person who trusts you in your life.
[the biggest selling enemy]
It’s not an opponent, not a price too high, not a rejection of your customers, not a company system, not a product. The biggest enemy is your complaint. Your excuse!
[the maximum ability to sell]


1, customers are the best teachers, peers are the best example, and the market is the best school. Take the length of all, and be longer than all. I learned the working principle of the bottle blowing machine for the PET bottle plastic machine, and I learned from him the working principle of the bottle blowing machine; for the color selection client to sell the machine, I learned from him that the most expensive original in the plastic machine was the color selection lens; the customer selected the machine for the electric box, and I realized that the working ring requirements of the electric box were so high. Many industries I have learned through customers, in time not to sell machines, I can also learn a new knowledge, the new principle, cumulative year by year not only can make me an expert in this air compressor industry, but also in other machinery industry have their own knowledge. Knowledge is invaluable, maybe one day these little knowledge will help me complete a large list.


2, the sense of dependence is greater than strength. 97% of the sales are building trust, and 3% are doing business. Building trust with customers is much more important than simple business relations. In most cases, customers become our old customers because of his trust in us. People are easily dependent on familiar things, refusing to change, like familiar environments and familiar people. Many of our customers may have established trading relationships with us on the basis of trust in you.


3, refusal is the beginning of a deal. Sales is the game of zero deposit and withdrawal. Every time a customer refuses, he saves money for you. Failure to be rejected by the customer is not really a failure, the purchase of goods than the three, perhaps customers in the use of other home products after the discovery is really bad, and then will find you back.


4, sales are the transmission of confidence, the transfer of emotions, the persuasion of physical strength; negotiation is the contest of determination; turnover is the embodiment of willpower. Emotions can be contagious. When you are full of confidence, full of confidence and will to your product, and your health, vigor and vitality, you can let the customer convince you of your personal charm, and try to think who is willing to deal with the dirty and dejected people. Physical and mental health is the foundation of your sales success. Sticking to exercise is your guarantee of success.


5, we must give customers something that contains gold. We must learn to create value and create the value that customers need. Sales are not only for our customers to learn, but also to teach our customers knowledge, because two people have one apple, exchange after each other or two apples, but when the two people have one of their own knowledge, we exchange each other, that is, more than two knowledge, will produce countless knowledge, gold content thing is not That’s exactly what we want to sell to our customers.


6, all things must learn to link. The relationship between emotions is greater than interests and cooperative relations, and there must be deep emotional exchanges with customers.
7, customers not only buy products themselves, but also buy products corresponding and extra services. Pre sales service and after-sales service are the performance of the strength of our company, do not do before the sale of grandson, after sale to do master, do our best to serve every customer, make customers feel at home, the value of the purchase of our company’s products, customers will be in the service of our reputation will be praised out, information When the time comes, your tiny movements can gradually affect the reputation and prestige of the whole company, as people ask about CF express that the express is expensive but the service is good.


8, connections are money and money, and connections are destiny. More contact with old customers, chatter home often visit, more friends more than one way to go, not necessarily to sell products to visit, can be daily gossip or holidays, gradually strengthen contact.


9, you never have the second chance to establish your first impression on customers. It’s the same as the fourth.


10, do not look at the last few days of each month. It is like a 3000 meter long run. When you run 2700 meters, the last 300 meters are important, and the last few days are the most likely to create a miracle.  Jedi survive, perhaps your good luck is at the end of this month.


11, there is no product that can’t be sold, only those who can’t sell the product; no chopping wood, only the axe is not fast enough; it is not the market recession, but the head is not fighting. Many empathy, products can be sold out, in most cases, or salesmen to sell themselves.


12, first-class salesmen sell themselves; second rate salesmen – selling services; three flow salesmen – selling products; four flow salesmen – selling prices. It’s the same as the eleventh.


13, the first impression to be delivered to the customer at the time of sale: I am your friend. I meet you today to make friends with you. All the top masters are the people who will take the customers.


14, sell at any time and anywhere, turn sales into a habit. Growth is always more important than success. You can’t make a deal in sales, but you can’t grow in sales.


15, it is possible to find common ground with customers.