Control device for pulse bag type dust collector

Abstract

The utility model discloses a control device for a pulse bag type dust collector, which comprises a dust collector body and a PLC (programmable logic controller) intelligent controller, a blowing pipe is arranged inside the dust collector body, a plurality of nozzles are arranged on the surface of the blowing pipe, one end of each nozzle is fixedly connected with a filter bag, the inside of each filter bag is communicated with the inside of each nozzle, and the PLC intelligent controller is connected with the PLC intelligent controller. The interior of the nozzle is communicated with the interior of the blowing pipe, gas blowing pressure flows to the blowing pipe through the electronic pulse valve in an instant high-pressure state under the guidance of the blowing bent pipe, gas source pressure is blown to a bag opening of a filter bag through the nozzle, and meanwhile, a large amount of induced gas is generated and is sprayed to the bottom of the filter bag together; the filter bag instantly expands to remove dust adsorbed on the outer surface, so that the purpose of an optimal dust removal state is achieved, the pulse dust removal time is short, the dust removal pressure of the filter bag is uniform, the service life of the filter bag can be effectively prolonged, and the blowing elbow is used for reducing gas pressure loss and gas pressure impact.

Description

Technical Field

[0001] The utility model belongs to the technical field of dust removal of bag dust collectors, and in particular relates to a control device for pulse bag dust collectors. Background Art

[0002] Bag dust collector is a highly efficient dust collection device. With the improvement of environmental protection standards, bag dust collector has been widely used in cement, aggregate, steel, chemical and light industry industries. The service life of the filter bag and the running resistance of the equipment are the main problems of the dust collector.

[0003] The pulse cleaning system of the dust collector is usually controlled by a pulse controller through a set time cycle. The high-pressure gas cleaning will cause the filter bags to expand frequently, which will directly affect the service life of the dust collector filter bags and damage the coating on the surface of the filter bags. As a result, the dust collector's ability to filter extremely fine dust has decreased after a period of use, and it may even cause the dust collector's outlet emissions to fail to meet standards, resulting in the filter bags being scrapped prematurely. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the utility model provides a control device for a pulse bag dust collector. When cleaning is required, the pressure difference sensor transmits a signal to the PLC intelligent controller, and the PLC intelligent controller controls the lifting valve cylinder to close the valve, stops the filtration inside the dust collector body, and sends an electrical signal to the electronic pulse valve to open it. The gas blowing pressure passes through the electronic pulse valve in an instantaneous high-pressure state and flows to the blowing pipe under the guidance of the blowing elbow. The gas source pressure is blown to the bag mouth of the filter bag through the nozzle, and a large amount of induced gas is generated and sprayed to the bottom of the filter bag. The filter bag expands instantly to remove the dust adsorbed on the outer surface, thereby achieving the purpose of the best cleaning state. The pulse cleaning time is short, and the filter bag cleaning pressure is uniform, which can effectively extend the service life of the filter bag. The blowing elbow is used to reduce gas pressure loss and gas pressure shock.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a control device for a pulse bag dust collector, comprising a dust collector body and a PLC intelligent controller, a blow pipe is arranged inside the dust collector body, a plurality of nozzles are arranged on the surface of the blow pipe, a filter bag is fixedly connected to one end of the nozzle, the interior of the filter bag is communicated with the interior of the nozzle, the interior of the nozzle is communicated with the interior of the blow pipe, a blow elbow is fixedly connected to one end of the blow pipe, an air distribution box is arranged at the end of the blow elbow away from the blow pipe, a pressure gauge is arranged on the air distribution box, a safety valve is arranged on the air distribution box, a connecting pipe is fixedly connected to the surface of the air distribution box, a ball valve is arranged at the end of the connecting pipe away from the air distribution box, a pressure reducing valve is arranged on the connecting pipe, a lifting valve cylinder is arranged at the air inlet of the dust collector body, and a pressure differential sensor is arranged in the dust collector body.

[0006] Furthermore, the PLC intelligent controller is electrically connected to the pressure difference sensor, the electronic pulse valve and the lifting valve cylinder through wires.

[0007] Furthermore, the interior of the connecting pipe is connected to the interior of the air distribution box, the interior of the blowing bent pipe is connected to the interior of the air distribution box, and the interior of the blowing bent pipe is connected to the interior of the blowing pipe.

[0008] Compared with the prior art, the beneficial effects of the utility model are:

[0009] 1. When cleaning is required, the differential pressure sensor transmits a signal to the PLC intelligent controller, which controls the lifting valve cylinder to close the valve, stops the filtration inside the dust collector body, and sends an electrical signal to the electronic pulse valve to open it. The gas injection pressure passes through the electronic pulse valve in an instantaneous high-pressure state and flows to the injection pipe under the guidance of the injection elbow. Through the nozzle, the gas source pressure is sprayed to the bag mouth of the filter bag. At the same time, a large amount of induced gas is generated and sprayed to the bottom of the filter bag. The filter bag expands instantly to remove the dust adsorbed on the outer surface, thereby achieving the purpose of the best cleaning state. The pulse cleaning time is short and the filter bag cleaning pressure is uniform, which can effectively extend the service life of the filter bag. The injection elbow is used to reduce gas pressure loss and gas pressure shock.

[0010] 2. The air source passes through the ball valve pressure reducing valve and enters the air distribution box by adjusting the appropriate injection air source pressure. The pressure gauge displays the pressure of the online air source. When the ball valve pressure reducing valve fails, the safety valve automatically releases the pressure to ensure that the pressure distribution box can withstand the pressure range, thereby ensuring the pressure required for dust removal by the dust collector. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a cross-sectional view of the dust collector body structure of the utility model.

[0012] In the figure: 1. ball valve; 2. pressure reducing valve; 3. gas distribution box; 4. pressure gauge; 5. safety valve; 6. differential pressure sensor; 7. lifting valve cylinder; 8. electronic pulse valve; 9. injection elbow; 10. injection pipe; 11. nozzle; 12. filter bag. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0014] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention. Example

[0015] See attached Figure 1 As shown, a control device for a pulse bag dust collector includes a dust collector body and a PLC intelligent controller, a blowing pipe 10 is arranged inside the dust collector body, a plurality of nozzles 11 are arranged on the surface of the blowing pipe 10, a filter bag 12 is fixedly connected to one end of the nozzle 11, the interior of the filter bag 12 is connected to the interior of the nozzle 11, the interior of the nozzle 11 is connected to the interior of the blowing pipe 10, a blowing elbow 9 is fixedly connected to one end of the blowing pipe 10, an air distribution box 3 is arranged at the end of the blowing elbow 9 away from the blowing pipe 10, a pressure gauge 4 is arranged on the air distribution box 3, a safety valve 5 is arranged on the air distribution box 3, a connecting pipe is fixedly connected to the surface of the air distribution box 3, a ball valve 1 is arranged at the end of the connecting pipe away from the air distribution box 3, a pressure reducing valve 2 is arranged on the connecting pipe, a lifting valve cylinder 7 is arranged at the air inlet of the dust collector body, and a pressure difference sensor 6 is arranged in the dust collector body.

[0016] The PLC intelligent controller is electrically connected to the pressure difference sensor 6, the electronic pulse valve 8 and the lift valve cylinder 7 through wires.

[0017] The interior of the connecting pipe is connected to the interior of the air distribution box 3 , the interior of the injection bent pipe 9 is connected to the interior of the air distribution box 3 , and the interior of the injection bent pipe 9 is connected to the interior of the injection pipe 10 .

[0018] Working principle: The air source passes through the ball valve 1 and the pressure reducing valve 2, and enters the air distribution box 3 by adjusting the appropriate injection air source pressure. The pressure gauge 4 displays the pressure of the online air source. When the ball valve 1 and the pressure reducing valve 2 fail, the safety valve 5 automatically releases the pressure to ensure that the pressure distribution box 3 can withstand the pressure, thereby ensuring the pressure required for dust collector cleaning. After the dust collector has been running for a period of time, the surface of the filter bag 12 will absorb a lot of dust. When cleaning is required, the pressure difference sensor 6 transmits a signal to the PLC intelligent controller. The PLC intelligent controller is a prior art, and the working principle will not be repeated here. The PLC intelligent controller controls the lifting valve cylinder 7 to close the valve , stop the filtration inside the dust collector body, and at the same time send an electrical signal to the electronic pulse valve 8 to open it. The gas blowing pressure passes through the electronic pulse valve 8 in an instantaneous high-pressure state and flows to the blowing pipe 10 under the guidance of the blowing elbow 9. Through the nozzle 11, the gas source pressure is blown to the bag opening of the filter bag 12. At the same time, a large amount of induced gas is generated and sprayed to the bottom of the filter bag 12. The filter bag 12 expands instantly to remove the dust adsorbed on the outer surface, thereby achieving the purpose of the best cleaning state. The pulse cleaning time is short and the filter bag cleaning pressure is uniform, which can effectively extend the service life of the filter bag 12. The blowing elbow 9 is used to reduce gas pressure loss and gas pressure shock.

[0019] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0020] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A control device for a pulse bag dust collector, comprising a dust collector body and a PLC intelligent controller, characterized in that: A blow pipe (10) is arranged inside the dust collector body, a plurality of nozzles (11) are arranged on the surface of the blow pipe (10), a filter bag (12) is fixedly connected to one end of the nozzle (11), the interior of the filter bag (12) is communicated with the interior of the nozzle (11), the interior of the nozzle (11) is communicated with the interior of the blow pipe (10), a blow elbow (9) is fixedly connected to one end of the blow pipe (10), an air distribution box (3) is arranged at the end of the blow elbow (9) away from the blow pipe (10), a pressure gauge (4) is arranged on the air distribution box (3), a safety valve (5) is arranged on the air distribution box (3), a connecting pipe is fixedly connected to the surface of the air distribution box (3), a ball valve (1) is arranged at the end of the connecting pipe away from the air distribution box (3), a pressure reducing valve (2) is arranged on the connecting pipe, a lifting valve cylinder (7) is arranged at the air inlet of the dust collector body, and a pressure difference sensor (6) is arranged inside the dust collector body.

2. A pulse bag dust collector control device according to claim 1, characterized in that: The PLC intelligent controller is electrically connected to the pressure difference sensor (6), the electronic pulse valve (8) and the lifting valve cylinder (7) respectively through wires.

3. A pulse bag dust collector control device according to claim 1, characterized in that: The interior of the connecting pipe is connected to the interior of the gas distribution box (3), the interior of the blowing bent pipe (9) is connected to the interior of the gas distribution box (3), and the interior of the blowing bent pipe (9) is connected to the interior of the blowing pipe (10).

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