Can that guy tell me how the cylinder on the bag dust collector works?

During the filtration process of the bag filter, the ash particles will slowly accumulate on the surface of the filter material to form a layer of dust and ash, which needs to be cleaned. Ash cleaning is an important link and influencing factor to ensure the normal operation of the bag filter, and the common cleaning methods of the general bag dust collector include pulse jet cleaning, reverse blowing cleaning, mechanical vibration cleaning and manual knocking

Clause. 1. Pulse jet cleaning: when the high-speed jet air is used to flow through the top of the filter bag, it blows to the inside of the filter bag to form an air wave, so that the filter bag produces sharp expansion and impact vibration from top to bottom, and produces a strong effect of clearing dust.

There are mainly three ways: forward spraying, reverse spraying and counter-spraying. The pulse cleaning effect is strong, the ash cleaning effect is better, and the filtration wind speed can be improved. It is the best cleaning method for the current ash cleaning effect.

Clause. 2. Gas cleaning method: use high-pressure gas or external atmosphere to blow back the filter bag to vibrate and remove the dust on the filter bag.

This method includes three types: reverse air cleaning, pulse jet cleaning and reverse suction cleaning. Among them, the most commonly used is the reverse blowing ash cleaning method, which uses the atmosphere or fan to discharge the pipe to inhale gas and form a reverse air flow, and uses the reverse wind speed and vibration to make the deposited powder layer dust fall off.

This cleaning method is commonly used to weave cloth filter material or use filter viscous filter material, which is easy to remove dust. The cleaning effect of the back-blowing cleaning method is relatively weak, but the damage to the filter cloth is smaller than that of the vibration cleaning method, so some soft filter materials, such as glass fiber filter cloth, use this cleaning method.

Clause. 3. Mechanical vibrating and ash cleaning: use the mechanical device to periodically vibrate each row of filter bags, or shake the frame of the suspended filter bag to vibrate the filter bag and clear the dust, so as to remove the dust on the filter bag.

According to different filter bag materials, it is divided into two kinds of top rapping ash cleaning and middle vibration ash cleaning, the mechanical structure of this ash cleaning method is simple, the operation is reliable, but the ash cleaning effect is weak, and it is suitable for textile cloth filter bags.

Clause. 4. Manual beating: As the name suggests, it is to use manual slapping of each filter bag of the bag filter to shake off the dust to remove the dust on the filter bag. This method of cleaning ash wastes manpower and time costs, and has begun to be slowly eliminated.

The dust cleaning effect is not good, the filter bag resistance will rise, which will affect the dust removal effect, according to different industrial and mining conditions, different ash cleaning methods should be selected to achieve the best ash cleaning effect.

A cylindrical metal mechanism that guides the piston in a straight reciprocating motion. The working fluid converts thermal energy into mechanical energy by expansion in the engine cylinder; The gas is compressed by the piston in the compressor cylinder to increase the pressure. The housings of turbines, rotary piston engines, etc., are often referred to as "cylinders".

Application areas of pneumatic cylinders: printing (tension control), semiconductors (spot welding machines, chip grinding), automation control, robotics, etc.

The working principle of the standard cylinder for dust removal: the compressed air enters the air source treatment element, and after the water filtration, pressure reduction, and lubricating oil treatment, it is dry, clean and lubricated with a certain pressure, and the air enters the cylinder by the solenoid valve. The solenoid valve receives the signal of the electric control cabinet and controls the action of the standard cylinder to realize the automatic process of cold air, ash discharge, offline ash cleaning, and return blowing.

Kiss Hello The bag filter cylinder does not descend due to the following reasons: 1 The inlet and outlet of the cylinder are blocked: If the inlet and outlet of the cylinder are blocked by dust and other substances, it will cause the cylinder to fail to fall.

At this time, it is necessary to clean up the dust and debris at the entrance and exit. 2 Insufficient hydraulic oil: If the hydraulic oil is insufficient, the cylinder cannot be lowered.

At this time, it is necessary to check the oil level of the hydraulic oil, and if it is insufficient, the hydraulic oil should be added in time. 3 Poor quality of hydraulic oil: If the quality of hydraulic oil is not good, it may cause the cylinder not to drop.

At this point, the hydraulic fluid needs to be replaced. 4. Leakage of hydraulic system: If the hydraulic system leaks, the hydraulic oil cannot form enough pressure, which will also cause the cylinder to not roll down and imitate the fall.

In this case, it is necessary to check the tightness of the hydraulic system and repair the leakage in time. Solution: 1 Clean the dust and debris at the inlet and outlet of the cylinder to ensure that the cylinder is unobstructed.

2. Check the oil level and quality of the hydraulic oil, and add or replace the hydraulic oil in time. 3. Check the tightness of the hydraulic system and repair the leakage in time.

Summary. Hello dear, the cylinder does not go down probably due to the following reasons:1

Cylinder internal valve failure or blockage: Check whether the valve inside the cylinder is stuck or damaged, and clean or replace it. 2.

Oil leakage in hydraulic pipelines: Check whether there is oil leakage in hydraulic pipelines and repair them in time. 3.

The temperature of the hydraulic oil is too high: check whether the temperature of the hydraulic oil is too high, causing the resistance to increase when the cylinder is raised, if the hydraulic oil is too hot, it is recommended to replace the new hydraulic oil, and regularly check the working status of the hydraulic oil. 4.

Damaged hydraulic pump: Check if the hydraulic pump is damaged or not working properly, and replace the hydraulic pump with a new one if necessary. 5.

Mechanical damage: check whether the connection between the cylinder and the mechanical equipment is normal, whether there are other damaged mechanical structures, and repair or replace them if necessary. It is important to point out that this is a repair job that requires professional skills, and if you are not a professional, it is recommended that you do not carry out repairs without permission.

It is best to ask a professional technician to come over for inspection and repair.

Why can't the cylinder of the bag filter come up and down?

Hello dear, the cylinder does not go down probably due to the following reasons:1Failure or blockage of the valve inside the cylinder:

Check whether the valve inside the cylinder is stuck or damaged, and clean or replace it. 2.Hydraulic line leakage:

Check whether the hydraulic pipeline is rolling and there is oil leakage, and repair it in time. 3.Hydraulic oil temperature is too high:

Check whether the temperature of the hydraulic oil is too high, causing the resistance to increase when the cylinder is raised, if the hydraulic oil is overheated, it is recommended to replace the new hydraulic oil, and regularly check the working status of the hydraulic oil. 4.Hydraulic pump damage:

Check whether the hydraulic pump is damaged or the balance is not working properly, and replace the new hydraulic pump if necessary. 5.Mechanical Damage:

Check whether the connection between the cylinder and the mechanical equipment is normal, whether there are other damaged mechanical structures, and repair or replace them if necessary. It is important to point out that this is a repair job that requires professional skills, and if you are not a professional, it is recommended that you do not carry out repairs without permission. It is best to ask a professional technician to come over for inspection and repair.

First, the leakage of the electromagnetic pulse valve is a common fault of the air box pulse bag filter, and the reasons for the failure are: (1) The diaphragm of the electromagnetic pulse valve is damaged. At this time, all the pulse valves of the dust collector do not work, the pressure of the air bag is rapidly reduced to zero, the cylinder is closed, the pressure difference of the dust collector continues to increase, and the ventilation volume is rapidly reduced; If the filter bag is damaged in a small area, the rag can also be patched with a new filter cloth of the same material, and the hole filling method is to bond with silicone rubber mixture, as long as the use temperature and chemical properties of the binder are suitable for the process conditions; (3) Manually close the poppet valve of each chamber in turn, observe the chimney of the dust collector, if the poppet valve of which chamber is closed, and the dust emission of the chimney is significantly reduced, it means that the chamber is damaged; (4) Close the pulse valve and poppet valve of the room where the broken bag is located, open the inspection door, and determine the number and location of the broken filter bag.

With the continuous improvement of bag filter technology, especially the update of ash cleaning system technology and the continuous optimization of production process, the role of bag filter in cement plant is becoming more and more important. It has now been transformed from auxiliary equipment to host equipment, especially in the cement grinding system and pulverized coal preparation system has become a finished product collector, which plays a very important role in the quality of cement and pulverized coal. The air box pulse bag filter (PPDC) has the advantages of high ash cleaning efficiency, simple structure, easy replacement of filter bags, high dust concentration at the inlet and low emission concentration at the outlet, and it is now the mainstream dust removal equipment of cement plants.

Air leakage of electromagnetic pulse valve is a common fault of air box pulse bag filter, and the reasons for the failure are: (1) The diaphragm of the electromagnetic pulse valve is damaged. At this time, all the pulse valves of the dust collector do not work, the pressure of the air bag is rapidly reduced to zero, the cylinder is closed, the pressure difference of the dust collector continues to increase, and the ventilation volume is rapidly reduced; (2) The air pressure balance hole of the electromagnetic pulse valve is blocked.

The blockage of the air pressure balance hole of the electromagnetic pulse valve is mainly caused by two reasons: (3) the compressed air contains more oil and water; When installing compressed air pipes, foreign substances such as rust and welding slag were not cleaned of the pipes.

2. If the compressed air contains more oil stains and water, it is easy to cause water accumulation in the cylinder, air leakage of the pulse valve, reduction of the overair pressure of the pneumatic triplet and non-working of the two-way valve of the cylinder. Therefore, the quality of compressed air is the key to the stable operation of the air box pulse bag filter. To deal with this problem, install a refrigerated gas dryer at the outlet of the air compressor, or install a gas filter with a replaceable filter element at the inlet of the dust collector gas tank, drain the water regularly and check the pressure difference of the gas filter, and replace the filter element when the pressure loss is reached.

How to maintain the cylinder poppet valve of the bag filter?

The cylinder poppet valve, hence the name, is a valve, but this valve uses the pressure of compressed air to open and close. In the bag filter, the opening and closing of the cylinder poppet valve is controlled by ash cleaning or filtration, and the cylinder is in an open state when the bag filter filter and dust removal normally; When cleaning the ash, the cylinder poppet valve is closed, cutting off the passage of the flue gas from the bag chamber to the gas outlet.

When using cylinder poppet valves, relevant safety regulations should be followed, and in the event of a malfunction, there should be an emergency stop device. After the work is completed, the compressed air inside the cylinder should be discharged, and a company has introduced the following methods of cylinder maintenance and maintenance:

1. The normal conditions of the cylinder: the medium and ambient temperature are generally 5-60, the working pressure is generally 50, and the movement speed range of the ordinary cylinder is 50-500mm s.

2. Before installation, it should be tested by no-load test movement, and it can be used only if the movement is normal and there is no air leakage.

3. The installed air source inlet needs to be equipped with an oil mover, which is conducive to lubrication in the work, and the reasonable lubrication of the cylinder is extremely important, often due to poor lubrication and creeping, and even can not work normally.

4. When installing, pay attention to the direction of action, and the piston rod is not allowed to bear eccentric load or lateral load.

5. When the load changes in the stroke, a cylinder with sufficient output force should be used, and a buffer device should be attached.

6. Do not use the full stroke. Especially when the piston rod is extended, do not make the piston collide with the cylinder head, otherwise it is easy to cause damage to the cylinder parts.

7. During use, each part of the cylinder should be regularly checked for abnormal phenomena, and whether the connecting parts are loose. If problems are found, they can be repaired in time to prevent accidents.

8. When the cylinder is overhauled and reassembled, the parts must be cleaned, and the stolen goods must not be brought into the cylinder, especially to prevent the sealing ring from being sheared, scratched, damaged, etc.

9. When the cylinder is removed and not used for a long time, the exposed part of the piston rod should be coated with anti-rust oil, and the intake and exhaust ports should be blocked with dust.

The main body of the air box pulse bag filter can be divided into many boxes, each box is placed with many filter bags, and a cylinder is provided on the outlet pipe on the side of each box to drive the poppet valve; When the dust collector filters the dusty gas for a certain period of time or when the resistance reaches the set value, the cleaning controller will send a signal, and then the poppet valve of the first chamber will start to close and cut off the filtered air flow; Then, when the pulse valve of the chamber is opened, the poppet valve is reopened, which can make the chamber filter again.

When the air box pulse bag filter adopts the cleaning of the sub-chamber, it is necessary to pay attention to the isolation of each box and take turns, and the pulse and cleaning cycle of each chamber need to be set in advance by the cleaning program controller to ensure that the program is carried out automatically, so as to ensure that the cleaning effect of the compressed air will be better. At the same time, the whole box will be designed with an inlet and outlet main pipe structure, when the ash hopper extends to the inlet main pipe, then the incoming dusty flue gas can directly enter the expanded ash hopper to achieve the effect of preventing dust removal.