CN205269287U - Automatic negative pressure deashing formula deduster of filter cylinder - Google Patents

Abstract

The utility model discloses an automatic negative pressure deashing formula deduster of filter cylinder, its characterized in that: the dust remover main part comprises exhaust chamber, clean room and the three room of deashing air chamber, it is in relevancy that three room leads to the cartridge filter, and the both ends of straining a section of thick bamboo communicate with each other with exhaust chamber and deashing air chamber, and the filter material section of straining a section of thick bamboo is in the clean room, strain and be equipped with the combination valve on the section of thick bamboo, by the work decision of combination valve is strained a section of thick bamboo and is in the dust removal state or is in the deashing state. The utility model discloses need not the compressed air arteries and veins and spouting the deashing, the deashing is carried out to straining a section of thick bamboo by oneself to system's negative pressure that the fan formed only to utilize dust remover self to air exhaust, improves ash cleaning efficiency, and extension filter material life reduces the energy consumption, and it is convenient to maintain.

Description

Automatic Negative Pressure Cleaning Filter Cartridge Dust Collector

technical field

The utility model relates to the field of dust removal equipment, in particular to an automatic negative pressure dust removal type filter cartridge dust collector.

Background technique

In the production process of building materials, steel, mechanical processing, chemical and energy industries, there are many gas discharge points containing dry dust. In order not to pollute the environment, dust collectors need to be installed at these discharge points; dust collectors will collect the dust in the dusty gas Filter it down and discharge the clean gas into the atmosphere.

At present, the dust collectors commonly used at these discharge points include filter bag dust collectors and filter cartridge dust collectors. The working principles of filter bag dust collectors and filter cartridge dust collectors are basically the same. The filter device of the filter adopts a filter bag, which is characterized by a simple structure, a cheap filter bag, and easy to clean dust, but it takes up a lot of space and the filter bag has a short life. The filter device of the filter cartridge dust collector uses a filter cartridge, which is characterized by greatly reducing the volume of the dust collector, long service life of the filter cartridge, and saving production space. The disadvantage of the cartridge type dust collector is that it is difficult to clean dust and the processing cost of the filter cartridge is high. In the use of small and medium-sized dust collectors, there is a trend that filter cartridge dust collectors will gradually replace filter bag dust collectors. The working principle of the filter cartridge dust collector: the dust-laden gas is sucked into the dust collector by the exhaust fan on the dust collector, the coarser particles fall directly into the ash bin, the dust-laden gas is filtered through the filter cartridge, the dust is retained on the bag surface, and the clean gas Exhaust to atmosphere through filter bag. With the operation of the dust collector, the dust on the surface of the filter cartridge is also increasing. In order to ensure the normal operation of the dust collector, it is necessary to regularly remove the dust accumulated on the surface of the filter cartridge. The commonly used automatic dust removal method is to use compressed air to blow back the filter cartridge to remove dust. In this dust removal method, the program controller is used to open the pulse valve one by one, so that the compressed air is blown to the filter cartridge through the nozzle to clean the dust, so that the filter cartridge suddenly Expansion, under the action of the reverse air flow, the dust attached to the surface of the filter cartridge quickly breaks away from the filter bag and falls, and the dust is discharged by the ash unloading device. This method mainly has the following problems: 1. The ash removal and air exhausting in the same room are carried out simultaneously, and the ash blown off on the filter cartridge is sucked back to the filter cartridge surface soon. 2. In order to increase the filter area of the filter cartridge, the filter material is made into a sawtooth shape, and the distance between the sawtooth is very small, so the blown dust will interfere with each other. 3. The blowback airflow cannot be evenly distributed to the entire cleaning surface, and there is a dead angle for cleaning. 4. The higher pressure of the injection air source will shorten the service life of the filter material. 5. The system requires frequent cycle injection, which consumes a lot of air and increases energy consumption. The existence of the above problems is also the main reason that affects the further promotion of filter cartridge dust collectors.

Utility model content

The purpose of the utility model is to provide a kind of dust cleaning without compressed air pulse spray, and only use the negative pressure of the system formed by the exhaust fan of the dust collector to clean the filter cartridge by itself, improve the cleaning efficiency, prolong the service life of the filter material, reduce the It is an automatic negative pressure cleaning filter cartridge dust collector with low energy consumption, convenient maintenance, and the ability to keep the dust collector working continuously.

The utility model solves the technical problem and provides the following scheme:

An automatic negative pressure dust removal filter cartridge dust collector, which is composed of an exhaust chamber, a dust removal chamber and a dust removal air chamber. These three chambers are connected through a filter cartridge, and a combined valve is installed on the filter cartridge, which can control the filter The connection and disconnection between the cylinder and the exhaust chamber or the dust-cleaning air chamber, the work of the combined valve is controlled by the PLC controller. Its characteristics are: when the automatic negative pressure dust removal type filter cartridge dust collector is working, a high-pressure centrifugal fan operates to generate negative pressure in the system to collect dust; the dust-containing gas is filtered through the filter cartridge, and the dust removal method of the filter cartridge is online Circular dust removal, the power of dust removal comes entirely from the negative pressure of the system itself, and the air volume for dust removal is controlled by the regulating valve at the inlet of the dust removal air chamber; the dust collected in the dust collection hopper is discharged through the dust discharge device; the dust collector can Continuous online work, using the filter cartridge as a filter, which occupies a small space.

The exhaust chamber, dust removal chamber and dust removal air chamber are connected through the filter cartridge. The dusty gas in the dust removal chamber must pass through the filter material of the filter cartridge before entering the exhaust chamber. The system only needs a centrifugal fan to provide negative pressure for dust removal and dust removal. power.

Both ends of the filter cartridge are transparent, and a combination valve driven by a driving device is installed on it. The left end of the combination valve is provided with a left valve plate, and the right end is provided with a right valve plate. The left and right valve plates are connected through a connecting rod. connected, and when the left valve plate closes one end of the filter cartridge, the right valve plate opens the other end of the filter cartridge, and the combination valve drives the connecting rod through an external drive device to work; in order to control whether the filter cartridge is in the dust removal state or Clear state.

A regulating valve and an air filter are installed at the entrance of the air cleaning chamber. The regulating valve is used to balance the air flow and pressure for cleaning dust. The air filter is used to filter the dust in the atmosphere and keep the cleaning air clean.

The working process of the utility model: the main part of the dust collector is composed of three chambers: the exhaust chamber, the dust removal chamber and the dust removal air chamber; the three chambers are connected through the filter cartridge, and the two ends of the filter cartridge are connected with the exhaust chamber and the dust removal air chamber In the same way, the filter material section of the filter cartridge is in the dust removal chamber; the filter cartridge is provided with a combined valve, the left end of the combined valve is provided with a left valve plate, and the right end is provided with a right valve plate, and the left and right valve plates are connected by a connecting rod, and When the left valve plate is closed, the right valve plate is opened, and the combined valve drives the connecting rod to work through the external drive device; the outlet of the exhaust chamber is equipped with a high-pressure centrifugal fan, and the inlet of the cleaning chamber is equipped with a regulating valve and air filter There is an ash collecting hopper at the lower part of the dust removal room, and an ash discharge device is installed at the ash outlet of the ash collecting hopper.

The utility model has the advantages: it is suitable for the online continuous operation of the dust collector, the dust removal is comprehensive, and the dust removal efficiency is improved; the wear of the filter material is reduced, and the service life of the filter cartridge is prolonged; the dew condensation is effectively prevented, and the "paste bag" phenomenon is avoided; Power, save energy, reduce the operating cost of the dust collector; the equipment has a simple structure, occupies a small space, is convenient for process layout, and is very convenient for maintenance.

Working principle of the utility model

When the utility model starts to work, first the centrifugal fan is started, and the dust-containing gas is sucked into the dust-removing chamber, part of the dust-containing gas settles to the ash collecting hopper by itself, and the other part passes through the filter cartridge and the dust is blocked and falls into the ash collecting hopper or is adsorbed outside the filter cartridge On the surface, the filtered clean gas enters the exhaust chamber from the inside of the filter cartridge and is discharged by the fan. The dust in the ash collecting hopper is discharged through the ash discharge device. The function of the ash discharge device is to discharge ash regularly according to the requirements, and has the function of locking the air to prevent unnecessary energy loss of the system. As the system continues to operate, more and more dust is attached to the filter cartridge, and the system resistance will also increase. At this time, it is necessary to clean the filter cartridge. The utility model adopts the filter cartridge on-line circulation cleaning method. When a certain filter cartridge needs to be cleaned, the combined valve on the filter cartridge works to isolate the filter cartridge from the exhaust chamber and at the same time make the filter cartridge and the dust removal air chamber Unicom, the air in the atmosphere is sucked into the dust-cleaning air chamber through the air filter and the regulating valve. At this time, under the action of the negative pressure of the system, the dust on the outer surface of the filter cartridge breaks away from the outer surface of the filter cartridge and falls into the dust collecting hopper under the action of suction. Or move to other working filter cartridges to achieve complete cleaning of the filter cartridge. The interval and duration of cleaning can be controlled by PLC program. In order to balance the air volume during dust removal, the air volume for dust removal can be controlled by manually or automatically adjusting the regulating valve at the entrance of the dust removal air chamber. The air filter at the entrance of the cleaning air chamber can prevent the dust in the atmosphere from entering the cleaning air chamber. When the filter cartridge is cleared, the combination valve is reset, the filter cartridge is separated from the air cleaning room, and the filter cartridge and the exhaust chamber are reconnected, then the filter cartridge enters the dust removal working state, and other filter cartridges that need to be cleaned enter the dust removal state. Clear state. As a result, the filter cartridge can clean the dust repeatedly on-line, and the dust collector can keep working continuously for a long time. The dust accumulated in the ash hopper is regularly discharged through the ash discharge device.

Description of drawings

Fig. 1 is the elevation schematic view of the utility model.

Fig. 2 is a schematic cross-sectional view of the utility model.

detailed description

Referring to the accompanying drawings, an automatic negative pressure dust removal filter cartridge dust collector mainly includes three chambers: an exhaust chamber 1, a dust removal chamber 2 and a dust removal air chamber 3; the three chambers are connected by a plurality of filter cartridges 4 The filter cartridge 4 is installed in the dust removal chamber 2, the two ends of the filter cartridge 4 communicate with the exhaust chamber 1 and the dust-cleaning air chamber 3, and the filter cartridge 4 is provided with a combined valve 5; the left end of the combined valve is provided There is a left valve plate 6, the right end is provided with a right valve plate 7, the left and right valve plates 6, 7 are connected by a connecting rod 8, and when the left valve plate 6 is closed, the right valve plate 7 is opened, and the combination The valve 3 is connected to an external drive device 9 through a transmission rod 8; a centrifugal fan 10 is installed at the outlet of the exhaust chamber 1, and an air filter 11 and a regulating valve 12 are installed at the inlet of the cleaning air chamber 3. The lower part of the dust removal chamber 2 is provided with an ash collecting hopper 13, and an ash discharge device 14 is provided at the ash discharge port of the ash collecting hopper 13.

Claims (4)

1. An automatic negative pressure dust removal type filter cartridge dust collector, which is composed of an exhaust chamber, a dust removal chamber and a dust removal air chamber. These three chambers are connected through a filter cartridge, and a combined valve is installed on the filter cartridge. The valve can Control the connection and disconnection between the filter cartridge and the exhaust chamber or the dust-cleaning air chamber. The work of the combination valve is controlled by the PLC controller. The operation of the centrifugal fan makes the system generate negative pressure, which plays the role of dust collection; the dust-laden gas is filtered through the filter cartridge, and the filter cartridge is cleaned by online circulation. It is controlled by the regulating valve at the inlet of the dust-cleaning air chamber; the dust collected in the dust-collecting hopper is discharged through the dust-discharging device; the dust collector can work continuously on-line, and the filter cartridge is used as a filter to occupy a small space. 2. The automatic negative pressure dust removal type filter cartridge dust collector according to claim 1, characterized in that: the exhaust chamber, the dust removal chamber and the dust removal air chamber are connected through the filter cartridge, and the dusty gas in the dust removal chamber needs to be filtered Only the filter material of the cylinder can enter the exhaust chamber, and the system only needs a centrifugal fan to provide negative pressure power for dust removal and dust removal. 3. The automatic negative pressure dust removal type filter cartridge dust collector according to claim 1, characterized in that: both ends of the filter cartridge are transparent, and a combination valve driven by a driving device is installed on it, and the left end of the combination valve is set There is a left valve plate, the right end is provided with a right valve plate, the left and right valve plates are connected by a connecting rod, and when the left valve plate closes one end of the filter cartridge, the right valve plate opens the other end of the filter cartridge, the The combination valve drives the connecting rod to work through the external driving device; in this way, it controls whether the filter cartridge is in the state of dust removal or dust removal. 4. The automatic negative pressure dust removal type filter cartridge dust collector according to claim 1, characterized in that: a regulating valve and an air filter are installed at the entrance of the air dust removal chamber, and the regulating valve is used for balancing the dust removal. The air flow and pressure, the air filter is used to filter the dust in the atmosphere and keep the clean air clean.