Spark extinguishing device for bag-type dust collector

Abstract

The utility model discloses a spark extinguishing device for a bag-type dust collector, which belongs to the technical field of bag-type dust collectors and comprises a pretreatment sleeve, one end of the pretreatment sleeve is fixedly connected with a first connecting flange, and the other end of the pretreatment sleeve is fixedly connected with a second connecting flange. And the other end of the pretreatment sleeve is fixedly mounted with the inlet end of the bag-type dust collector. According to the utility model, after entering the pretreatment sleeve, flue gas is filtered by the first interception filter plate and the second interception filter plate, so that coarse powder and larger spark-containing particles in the flue gas are filtered and intercepted for multiple times, and part of sparks and particles influencing the detection of the spark detector are effectively intercepted; when one or more spark detectors detect that the filtered flue gas flow still carries sparks, the conical spiral spray pipe sprays water vapor to comprehensively extinguish and eliminate the sparks, so that the sparks entering the bag-type dust collector are greatly reduced, and the safe use of the bag-type dust collector is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of bag filter technology, and in particular to a spark extinguishing device for bag filters. Background Technology

[0002] A baghouse dust collector is a dry dust filtration device suitable for collecting fine, dry, non-fibrous dust. It is widely used in factories such as foundries, metallurgical furnaces, and biomass boilers. When dust-laden gas enters the baghouse dust collector, larger, heavier dust particles settle due to gravity and fall into the ash hopper. The gas containing finer dust particles is purified as it passes through the filter media, where the dust is trapped. Since flue gas often contains sparks, if these sparks are not treated before entering the baghouse dust collector, they can enter the collector, burn the filter bags, paralyze the entire dust collection system, and even cause dust explosions, resulting in economic losses and potentially serious safety accidents. Therefore, spark-containing dust needs to be treated for spark capture before entering the baghouse dust collector, solving the spark problem and ensuring the safe and stable operation of the dust collection system.

[0003] A search revealed a patent with publication number CN218553414U entitled "A Spark Extinguishing Device for Bag Filters." The technical problem it addresses is that unburned material in the flue gas can form sparks, which, under certain conditions, can easily ignite the dust in the filter bags, causing damage and danger. The device works by detecting sparks in the dust entering the flue via a spark sensor, then controlling a spray gun to atomize water and extinguish the sparks. This effectively solves the safety hazard posed by sparks to the flue and bag filter, significantly improving dust removal efficiency. Furthermore, the movement of the spray gun maximizes the lifespan of the nozzle and spark sensor. However, the following drawbacks still need to be addressed: the high airflow velocity in the flue, carrying a large amount of coarse dust, may interfere with the spark sensor's detection results, causing some sparks to remain inside the bag filter. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a spark extinguishing device for bag filters.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A spark extinguishing device for a bag filter includes a pretreatment sleeve. One end of the pretreatment sleeve is fixedly connected to a first connecting flange, and the other end of the pretreatment sleeve is fixedly connected to a second connecting flange. The other end of the pretreatment sleeve is fixedly installed at the inlet end of the bag filter. Inside the pretreatment sleeve, a first intercepting filter plate and a second intercepting filter plate, as well as a vortex tube and a spray pipe are fixedly installed in sequence. Multiple spark detectors are fixedly installed on one side of the vortex tube. The spray pipe is a conical spiral shape, and an atomizing port is provided on the outer circumference of the spray pipe.

[0007] Preferably, the bottom end of the pretreatment sleeve is provided with a first outlet, a second outlet and a third outlet in sequence, with the first outlet located on one side of the bottom end of the first intercepting filter plate, the second outlet located on one side of the bottom end of the second intercepting filter plate, and the third outlet located at the bottom end of the spray pipe.

[0008] Preferably, a first sewage discharge component is fixedly installed at the bottom of the first discharge port, a second sewage discharge component is fixedly installed at the bottom of the second discharge port, and a third sewage discharge component is fixedly installed at the bottom of the third discharge port. The first sewage discharge component, the second sewage discharge component, and the third sewage discharge component are all formed by a hopper and a discharge pipe that are fixedly connected.

[0009] Preferably, a wire harness tube is fixedly installed on the other side of the bottom end of the pretreatment sleeve, and the top end of the wire harness tube is fixedly connected to the bottom end of the vortex tube.

[0010] Preferably, a guide tube is fixedly installed at the other end of the top of the pretreatment sleeve, and the bottom end of the guide tube is fixedly connected to the input end of the spray pipe.

[0011] Preferably, both the first and second intercepting filter plates are inclined, and the first and second intercepting filter plates are inclined in opposite directions, with the same inclination angle, and the aperture of the first intercepting filter plate is larger than that of the second intercepting filter plate.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. This utility model proposes a spark extinguishing device for a bag filter. A pretreatment sleeve is fixedly installed at the inlet end of the bag filter. Inside the pretreatment sleeve, a first intercepting filter plate, a second intercepting filter plate, a vortex tube, and a spray pipe are sequentially fixed. After the flue gas enters the pretreatment sleeve, it is first filtered by the first and second intercepting filter plates, which repeatedly filter and intercept coarse powder and larger spark-containing particles in the flue gas. This effectively intercepts some sparks and particles that affect the detection of the spark detector, greatly reducing the detection difficulty and intensity of the spark detector and improving the detection accuracy of the spark detector in the flue gas. When one or more spark detectors detect that the filtered flue gas still carries sparks, water vapor is sprayed by a conical spiral spray pipe to completely extinguish and eliminate the sparks, greatly reducing the number of sparks entering the bag filter and ensuring the safe use of the bag filter.

[0014] 2. The present invention proposes a spark extinguishing device for a bag filter dust collector, comprising a first outlet located on one side of the bottom of a first intercepting filter plate, a second outlet located on one side of the bottom of a second intercepting filter plate, and a third outlet located at the bottom of a spray pipe. A first discharge component is fixedly installed at the bottom of the first outlet, a second discharge component is fixedly installed at the bottom of the second outlet, and a third discharge component is fixedly installed at the bottom of the third outlet. The first, second, and third discharge components are all fixedly connected by a hopper and a discharge pipe, which allows coarse powder and larger spark-containing particles intercepted by the first and second intercepting filter plates to be discharged in a timely manner, preventing them from being carried by the flue gas. It also allows the particles that condense and fall after being sprayed onto the flue gas by the spray pipe to be discharged in a timely manner, preventing accumulation that could affect the use of the spark detector and the spray range of the spray pipe. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the spark extinguishing device for a bag filter proposed in this utility model;

[0016] Figure 2 This is a bottom view of the spark extinguishing device for a bag filter proposed in this utility model.

[0017] Figure 3 This is a schematic diagram of the internal structure of the pretreatment sleeve of the spark extinguishing device for a bag filter proposed in this utility model;

[0018] Figure 4 This is a schematic diagram of the vortex ring tube and spray pipe of a spark extinguishing device for a bag filter proposed in this utility model.

[0019] In the figure: 1 Pretreatment sleeve, 2 First connecting flange, 3 Second connecting flange, 4 First intercepting filter plate, 5 Second intercepting filter plate, 6 First discharge port, 7 First sewage discharge assembly, 8 Second discharge port, 9 Second sewage discharge assembly, 10 Third discharge port, 11 Third sewage discharge assembly, 12 Hopper, 13 Discharge pipe, 14 Vortex ring pipe, 15 Bundle pipe, 16 Spark detector, 17 Guide pipe, 18 Spray pipe. Detailed Implementation

[0020] Reference Figure 1-4 A spark extinguishing device for a bag filter includes a pretreatment sleeve 1. One end of the pretreatment sleeve 1 is fixedly connected to a first connecting flange 2, and the other end of the pretreatment sleeve 1 is fixedly connected to a second connecting flange 3. The other end of the pretreatment sleeve 1 is fixedly installed at the inlet end of the bag filter. Inside the pretreatment sleeve 1, a first intercepting filter plate 4 and a second intercepting filter plate 5, a vortex ring tube 14, and a spray pipe 18 are fixedly installed in sequence. Multiple spark detectors 16 are fixedly installed on one side of the vortex ring tube 14. The spray pipe 18 is a conical spiral shape, and an atomizing port is provided on the outer circumference of the spray pipe 18.

[0021] In this utility model, the bottom end of the pretreatment sleeve 1 is sequentially provided with a first outlet 6, a second outlet 8 and a third outlet 10, and the first outlet 6 is located on one side of the bottom end of the first intercepting filter plate 4, the second outlet 8 is located on one side of the bottom end of the second intercepting filter plate 5, and the third outlet 10 is located at the bottom end of the spray pipe 18.

[0022] The first discharge port 6 is fixedly installed with the first sewage discharge component 7 at the bottom, the second discharge port 8 is fixedly installed with the second sewage discharge component 9 at the bottom, and the third discharge port 10 is fixedly installed with the third sewage discharge component 11 at the bottom. The first sewage discharge component 7, the second sewage discharge component 9 and the third sewage discharge component 11 are all fixedly connected by the hopper 12 and the discharge pipe 13.

[0023] A wire harness tube 15 is fixedly installed on the other side of the bottom end of the pretreatment sleeve 1, and the top end of the wire harness tube 15 is fixedly connected to the bottom end of the vortex tube 14.

[0024] A guide tube 17 is fixedly installed at the other end of the top of the pretreatment sleeve 1, and the bottom end of the guide tube 17 is fixedly connected to the input end of the spray pipe 18.

[0025] Both the first intercepting filter plate 4 and the second intercepting filter plate 5 are inclined, and the inclination directions of the first intercepting filter plate 4 and the second intercepting filter plate 5 are opposite. The inclination angles of the first intercepting filter plate 4 and the second intercepting filter plate 5 are the same, and the aperture of the first intercepting filter plate 4 is larger than the aperture of the second intercepting filter plate 5.

[0026] Working principle: A pretreatment sleeve 1 is fixedly installed at the inlet end of the bag filter. Inside the pretreatment sleeve 1, a first intercepting filter plate 4, a second intercepting filter plate 5, a vortex tube 14, and a spray pipe 18 are fixedly installed in sequence. After the flue gas enters the pretreatment sleeve 1, it is first filtered by the first intercepting filter plate 4 and the second intercepting filter plate 5. The coarse powder and larger spark-containing particles in the flue gas are filtered and intercepted multiple times, effectively intercepting some sparks and particles that affect the detection of the spark detector 16. This greatly reduces the detection difficulty and intensity of the spark detector 16 and improves the detection accuracy of the spark detector 16 in the flue gas. When one or more spark detectors 16 detect that the filtered flue gas still carries sparks, water vapor is sprayed by the conical spiral spray pipe 18 to completely extinguish and eliminate the sparks, greatly reducing the number of sparks entering the bag filter and ensuring the safe use of the bag filter.

[0027] The first discharge port 6 is located on one side of the bottom of the first intercepting filter plate 4, the second discharge port 8 is located on one side of the bottom of the second intercepting filter plate 5, and the third discharge port 10 is located at the bottom of the spray pipe 18. The first discharge port 6 is fixedly installed with a first sewage discharge component 7, the second discharge port 8 is fixedly installed with a second sewage discharge component 9, and the third discharge port 10 is fixedly installed with a third sewage discharge component 11. The first sewage discharge component 7, the second sewage discharge component 9, and the third sewage discharge component 11 are all fixedly connected by a hopper 12 and a discharge pipe 13. This allows the coarse powder and larger spark-containing particles intercepted by the first intercepting filter plate 4 and the second intercepting filter plate 5 to be discharged in time, preventing them from being carried by the flue gas. It also allows the particles that condense and fall after being sprayed by the spray pipe 18 to be discharged in time, preventing them from accumulating and affecting the use of the spark detector 14 and the spray range of the spray pipe 18.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A spark extinguishing device for a bag filter dust collector, comprising a pretreatment sleeve (1), one end of which is fixedly connected to a first connecting flange (2), and the other end of which is fixedly connected to a second connecting flange (3), the other end of which is fixedly installed at the inlet end of the bag filter dust collector, characterized in that, The pretreatment sleeve (1) is sequentially fixedly installed with a first interception filter plate (4), a second interception filter plate (5), a vortex ring tube (14), and a spray pipe (18). Multiple spark detectors (16) are fixedly installed on one side of the vortex ring tube (14). The spray pipe (18) is a conical spiral shape, and an atomization port is provided on the outer circumference of the spray pipe (18).

2. A spark extinguishing device for a bag filter dust collector according to claim 1, characterized in that, The pretreatment sleeve (1) has a first outlet (6), a second outlet (8) and a third outlet (10) sequentially opened at the bottom end. The first outlet (6) is located on one side of the bottom end of the first intercept filter plate (4), the second outlet (8) is located on one side of the bottom end of the second intercept filter plate (5), and the third outlet (10) is located at the bottom end of the spray pipe (18).

3. A spark extinguishing device for a bag filter dust collector according to claim 2, characterized in that, The first discharge port (6) is fixedly installed with a first sewage discharge component (7), the second discharge port (8) is fixedly installed with a second sewage discharge component (9), and the third discharge port (10) is fixedly installed with a third sewage discharge component (11). The first sewage discharge component (7), the second sewage discharge component (9) and the third sewage discharge component (11) are all formed by a hopper (12) and a discharge pipe (13) that are fixedly connected.

4. A spark extinguishing device for a bag filter dust collector according to claim 1, characterized in that, A wire harness tube (15) is fixedly installed on the other side of the bottom end of the pretreatment sleeve (1), and the top end of the wire harness tube (15) is fixedly connected to the bottom end of the vortex tube (14).

5. A spark extinguishing device for a bag filter dust collector according to claim 1, characterized in that, The other end of the top of the pretreatment sleeve (1) is fixedly installed with a guide pipe (17), and the bottom end of the guide pipe (17) is fixedly connected to the input end of the spray pipe (18).

6. A spark extinguishing device for a bag filter dust collector according to claim 1, characterized in that, The first intercepting filter plate (4) and the second intercepting filter plate (5) are both inclined, and the first intercepting filter plate (4) and the second intercepting filter plate (5) are inclined in opposite directions. The first intercepting filter plate (4) and the second intercepting filter plate (5) are inclined at the same angle. The aperture of the first intercepting filter plate (4) is larger than that of the second intercepting filter plate (5).

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