A bag filter for waste gas purification

Abstract

This utility model relates to the technical field of baghouse dust collectors, specifically a baghouse dust collector for waste gas purification, including a housing. The housing has an external structural structure, and a filter bag module mechanism is installed inside the housing. Cleaning mechanisms are provided on the inside and outside walls of the housing. This utility model incorporates a connecting plate and a filter bag frame to form the filter bag module mechanism. When replacing filter bags, it is not necessary to disassemble individual bags and frames one by one; the integrated filter bag module can be quickly disassembled as a whole, shortening replacement time and improving maintenance efficiency. Furthermore, the addition of a pulse jet motor and brushes forms the cleaning mechanism. The high-pressure airflow impacts the inside of the filter bag, causing it to expand and vibrate. The motor's power output generates circumferential friction on the brushes. Both work together to remove dust of different particle sizes and properties. This composite cleaning method avoids the high-frequency impact damage to the filter bag caused by single pulse jet cleaning and reduces the continuous friction loss of pure brush cleaning, thus reducing the filter bag breakage rate and extending its lifespan.

Description

Technical Field

[0001] This utility model relates to the technical field of baghouse dust collectors, specifically a baghouse dust collector for waste gas purification. Background Technology

[0002] Industrial production processes generate large amounts of waste gas containing pollutants such as particulate matter, flue gas, and odorous gases. If this waste gas is discharged directly into the atmosphere without treatment, it will cause serious environmental pollution, such as leading to a decline in air quality, acid rain formation, and ecosystem damage. It will also pose a great threat to human health. With the acceleration of industrialization and the improvement of people's environmental awareness, the demand for waste gas purification is becoming increasingly urgent. However, waste gas treatment technology has some limitations. Therefore, a bag filter dust collector for waste gas purification has emerged.

[0003] However, the existing baghouse dust collectors for exhaust gas purification have the following problems: First, when replacing filter bags, each individual bag and frame must be disassembled and removed one by one. The operation is cumbersome and time-consuming, especially in large equipment with a large number of filter bags, which requires a lot of manpower and time costs, resulting in extended equipment downtime maintenance cycles and affecting production continuity. Second, the dust removal method is singular. Relying solely on natural settling or simple vibration is insufficient to remove sticky dust, fine particles, and fibrous debris from the surface of the filter bags, which can easily cause rapid clogging of the filter bags, leading to a significant increase in the pressure drop of the dust collector, a decrease in ventilation volume, and consequently, a reduction in exhaust gas treatment efficiency, excessive emission concentrations, shortened filter bag lifespan, increased replacement frequency and maintenance costs, and incomplete dust removal affects the continuous operation of the equipment, making it unable to meet the purification needs under high dust loads or complex working conditions.

[0004] Therefore, we provide a bag filter for waste gas purification to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a bag filter for purifying waste gas, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a bag filter for purifying waste gas, comprising a housing, an external structural mechanism, an internal filter bag module mechanism, and a dust removal mechanism on the internal and external walls of the housing.

[0007] Preferably, the structure includes a top plate installed on the top of the box, an air inlet fixedly connected to one side of the outer wall of the box, an ash hopper fixedly connected to the lower end of the box, and an air outlet fixedly connected to the other side of the outer wall of the box.

[0008] Preferably, the filter bag module mechanism includes a partition fixedly connected to the inner wall of the box. The height of the partition is lower than the air outlet and higher than the air inlet. The partition has multiple openings for clamping filter bags. A filter bag frame is clamped inside the filter bag. Multiple connecting plates are fixedly connected to the outer edge of the top surface of the filter bag frame. The connecting plates are connected to the connecting plates that are fixedly connected to the outer edge of the adjacent filter bag frame two by bolt threads.

[0009] Preferably, the dust removal mechanism includes a pulse generator fixedly connected to the outer wall of the housing, the pulse generator having a detachable blowpipe on its top surface, the blowpipe passing through the housing and having nozzles inside the housing, the nozzles being positioned above each filter bag.

[0010] Preferably, a motor is fixedly connected to the top of the filter bag frame, a rotating shaft is provided at the lower end of the motor, a bearing is provided at the bottom of the rotating shaft, a carrying plate is fixedly connected to the outer edge of the rotating shaft, and a brush is provided on one side of the carrying plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model constructs a filter bag module mechanism by adding a connecting plate and a filter bag frame. The connecting plate on the filter bag frame and the connecting plate on the adjacent filter bag frame are threaded together. When removing the filter bag, several filter bags and filter bag frames can be removed from the partition at the same time. When replacing the filter bag, it is not necessary to disassemble each individual filter bag and frame. The integrated filter bag module can be quickly disassembled as a whole, which greatly shortens the replacement time, significantly improves maintenance efficiency, greatly reduces equipment downtime, and ensures production continuity. At the same time, the modular design simplifies the operation process, reduces manpower input, and maintains the efficient operation of the dust collector.

[0013] 2. This utility model incorporates a dust removal mechanism consisting of a pulse jet and brushes. The high-pressure airflow impacts the inside of the filter bag, causing it to expand and vibrate. Meanwhile, the brush bristles contact the inner wall of the filter bag, and the motor's power output generates circumferential friction on the brushes. Together, these components work to remove dust of different particle sizes and properties. This composite dust removal method avoids the high-frequency impact damage to the filter bag caused by single pulse jet cleaning and reduces the continuous frictional loss of pure brush cleaning, thus lowering the filter bag breakage rate and extending its lifespan. It effectively solves the problems of incomplete handling of complex dust and high maintenance costs associated with traditional dust removal methods. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a top view of the structure of this utility model.

[0016] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0017] Figure 4 This is a schematic diagram of the overall structure of the filter bag module of this utility model.

[0018] Figure 5 This is a schematic diagram of the filter bag module mechanism of this utility model.

[0019] Figure 6 This is an exploded view of the filter bag module mechanism of this utility model.

[0020] Figure 7 This is a schematic diagram of the overall structure of the dust removal mechanism of this utility model.

[0021] Figure 8 This is a schematic diagram of the dust removal mechanism of this utility model.

[0022] In the diagram: 1. Housing; 2. Components; 201. Top plate; 202. Air inlet; 203. Ash hopper; 204. Air outlet; 3. Filter bag module mechanism; 301. Partition plate; 302. Filter bag; 303. Filter bag frame; 304. Connecting plate; 305. Second filter bag frame; 306. Second connecting plate; 4. Dust removal mechanism; 401. Pulse motor; 402. Blowpipe; 403. Nozzle; 404. Motor; 405. Shaft; 406. Bearing; 407. Loading plate; 408. Brush. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-8 One embodiment of this utility model is a bag filter for purifying waste gas, comprising a housing 1, a structural mechanism 2 on the outside of the housing 1, a filter bag module mechanism 3 installed inside the housing 1, and a dust removal mechanism 4 on the inside and outside of the housing 1.

[0028] Furthermore, the constituent mechanism 2 includes a top plate 201 installed on the top of the box 1, an air inlet 202 fixedly connected to one side of the outer wall of the box 1, a dust hopper 203 fixedly connected to the lower end of the box 1, and an air outlet 204 fixedly connected to the other side of the outer wall of the box 1. The air to be purified enters through the air inlet 202, large dust particles fall directly into the dust hopper 203, and the remaining dust is discharged through the air outlet 204 after subsequent filtration. The top plate 201 can be opened when internal parts need to be replaced.

[0029] Furthermore, the filter bag module mechanism 3 includes a partition 301 fixedly connected to the inner wall of the housing 1. The height of the partition 301 is lower than that of the air outlet 204 and higher than that of the air inlet 202. The partition 301 is fitted with filter bags 302 through multiple openings. A filter bag frame 303 is fitted inside the filter bag 302. Multiple connecting plates 304 are fixedly connected to the outer edge of the top surface of the filter bag frame 303. The connecting plates 304 and the connecting plates 306 fixedly connected to the outer edge of the adjacent filter bag frame 305 are connected by bolts. When replacing the filter bags, since the connecting plates 304 fixedly connected to the filter bag frame 303 and the connecting plates 306 fixedly connected to the adjacent filter bag frame 305 are threadedly connected, several filter bags 302 and filter bag frames 303 can be removed from the partition 301 at the same time when removing the filter bags, which greatly shortens the replacement time.

[0030] Furthermore, the dust removal mechanism 4 includes a pulse jet 401 fixedly connected to the outer wall of the housing 1. The top surface of the pulse jet 401 is provided with a detachable blowpipe 402. The blowpipe 402 passes through the housing 1 and a nozzle 403 is provided inside the housing 1. The nozzle 403 is located above each filter bag 302. The pulse jet 401 generates a high-pressure airflow. The blowpipe 402 is arranged along the arrangement direction of the filter bags 302 and communicates with the pulse jet 401. The nozzle 403 is set corresponding to the inlet of the filter bag 302. The high-pressure airflow impacts the inside of the filter bag 302, causing the filter bag 302 to expand and vibrate, thereby achieving the peeling and cleaning of dust inside the filter bag 302.

[0031] Furthermore, a motor 404 is fixedly connected to the top of the filter bag frame 303, a rotating shaft 405 is provided at the lower end of the motor 404, a bearing 406 is provided at the bottom of the rotating shaft 405, a carrying plate 407 is fixedly connected to the outer edge of the rotating shaft 405, and a brush 408 is provided on one side of the carrying plate 407. The bristles of the brush 408 abut against the inner wall of the filter bag 302, and the bearing 406 provides rotational support for the brush 408. The power output of the motor 404 enables the brush 408 to mechanically remove dust adhering to the inner wall of the filter bag 302.

[0032] Working principle: The air to be purified enters through the air inlet 202. Large dust particles fall directly into the dust hopper 203. The remaining dust is filtered by the filter bags 302 and discharged through the air outlet 204. After prolonged machine operation, excessive dust on the filter bags 302 affects the efficient operation of the machine. It can be cleaned by the dust removal mechanism 4. The pulse jet 401 generates a high-pressure airflow. The blowpipe 402 is arranged along the arrangement direction of the filter bags 302 and is connected to the pulse jet 401. The nozzle 403 is set corresponding to the inlet of the filter bags 302. The high-pressure airflow impacts the inside of the filter bags 302, causing the filter bags 302 to expand and vibrate, thereby achieving the cleaning of the filter bags 302. The dust inside the filter bag 302 is removed by brush 408, and the bristles of brush 408 contact the inner wall of filter bag 302. Bearing 406 provides rotational support for brush 408. The power output of motor 404 enables brush 408 to mechanically remove the dust attached to the inner wall of filter bag 302. When internal parts need to be replaced, top plate 201 can be opened. Since the connecting plate 304 fixedly connected to filter bag frame 303 and the connecting plate 306 fixedly connected to adjacent filter bag frame 305 are threadedly connected, several filter bags 302 and filter bag frames 303 can be removed from partition 301 at the same time when removing filter bags, greatly shortening the replacement time.

[0033] The above description is merely an embodiment of this utility model, and common knowledge regarding specific structures and characteristics is not described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A bag filter for purifying waste gas, comprising a housing (1), characterized in that: The box (1) is provided with a structural mechanism (2) on the outside, a filter bag module mechanism (3) is installed inside the box (1), and a dust removal mechanism (4) is provided inside and outside the box (1).

2. The bag filter for waste gas purification according to claim 1, characterized in that: The constituent mechanism (2) includes a top plate (201) installed on the top of the box (1), an air inlet (202) fixedly connected to one side of the outer wall of the box (1), an ash hopper (203) fixedly connected to the lower end of the box (1), and an air outlet (204) fixedly connected to the other side of the outer wall of the box (1).

3. The bag filter for purifying waste gas according to claim 1, characterized in that: The filter bag module mechanism (3) includes a partition (301) fixedly connected to the inner wall of the box (1). The height of the partition (301) is lower than the air outlet (204) and higher than the air inlet (202). The partition (301) is fitted with a filter bag (302) through multiple openings. The filter bag (302) is fitted with a filter bag frame (303) inside. Multiple connecting plates (304) are fixedly connected to the outer edge of the top surface of the filter bag frame (303). The connecting plate (304) is fixedly connected to the connecting plate (306) (306) (305) (305) by bolt threads.

4. The bag filter for purifying waste gas according to claim 1, characterized in that: The dust removal mechanism (4) includes a pulse machine (401) fixedly connected to the outer wall of the box (1). The pulse machine (401) has a detachable blow pipe (402) on its top surface. The blow pipe (402) passes through the box (1) and has a nozzle (403) inside the box (1). The nozzle (403) is located above each filter bag (302).

5. A bag filter for purifying waste gas according to claim 3, characterized in that: A motor (404) is fixedly connected to the top of the filter bag frame (303). A rotating shaft (405) is provided at the lower end of the motor (404). A bearing (406) is provided at the bottom of the rotating shaft (405). A carrying plate (407) is fixedly connected to the outer edge of the rotating shaft (405). A brush (408) is provided on one side of the carrying plate (407).

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