Pulse bag type dust collector for boiler

Abstract

The utility model discloses a boiler pulse bag type dust collector which comprises a filtering box body, an air inlet pipe is fixedly installed on one side of the filtering box body, a cooling box is fixedly installed on one side of the air inlet pipe, an air conveying pipe is fixedly installed on one side of the cooling box, and a cooling pipe is fixedly installed in the cooling box. One end of the cooling pipe is communicated with the air inlet pipe, the other end of the cooling pipe is communicated with the air conveying pipe, a water inlet pipe is fixedly mounted on one side of the upper portion of the cooling box, a water outlet pipe is fixedly mounted on one side of the lower portion of the cooling box, and a mounting plate frame is fixedly mounted on the upper portion of the cooling box and fixedly connected with the filtering box body. According to the high-temperature boiler flue gas cooling device, the flue gas cooling capacity is achieved, practicability is improved, and therefore the problems that when high-temperature boiler flue gas is input into a dust remover to be filtered, the internal structure can be damaged, and stable filtering of the flue gas is affected are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of baghouse dust collectors, specifically a boiler pulse baghouse dust collector. Background Technology

[0002] Boilers, as energy conversion devices, produce steam or hot water by burning fuel and are widely used in power generation, heating, and industrial production. However, during the combustion process, boilers generate a large amount of flue gas containing pollutants such as dust and soot. If this flue gas is directly discharged into the atmosphere, it will cause serious environmental pollution. In order to effectively treat this flue gas, boiler pulse bag filters are needed to filter the dust in the flue gas using filter bags to achieve continuous purification of the flue gas.

[0003] For example, the patent with announcement number CN212309125U (a boiler pulse bag dust collector) includes a dust collector cylinder, an air inlet connected to one side of the dust collector cylinder, a connecting pipe vertically fixed on the dust collector cylinder, a filter cylinder connected to the bottom end of the connecting pipe, an air outlet pipe connected to the top end of the connecting pipe, an air outlet pulse solenoid valve and a dust removal pulse solenoid valve installed on the air outlet pipe, an air pump connected to the dust removal pulse solenoid valve, a dust discharge valve installed at the bottom of the dust collector cylinder, a collection bag connected to the dust discharge valve, and two servo motors fixedly connected to the top of the dust collector cylinder.

[0004] While the aforementioned existing technologies can clean the filter cartridge by reverse air blowing, they lack a structure for cooling boiler flue gas. Consequently, when high-temperature boiler flue gas is fed into the dust collector for filtration, the internal structure will be damaged, affecting the stable filtration of the flue gas. Therefore, there is an urgent market need to develop a boiler pulse bag filter to help people solve the existing problems. Utility Model Content

[0005] The purpose of this invention is to provide a boiler pulse bag filter to solve the problem mentioned in the background art that when high-temperature boiler flue gas is filtered into the dust collector, the internal structure is damaged, affecting the stable filtration of the flue gas.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a boiler pulse bag filter, comprising a filter housing, an air inlet pipe fixedly installed on one side of the filter housing, a cooling box fixedly installed on one side of the air inlet pipe, an air supply pipe fixedly installed on one side of the cooling box, a cooling pipe fixedly installed inside the cooling box, one end of the cooling pipe communicating with the air inlet pipe, the other end of the cooling pipe communicating with the air supply pipe, a water inlet pipe fixedly installed on one side above the cooling box, a water outlet pipe fixedly installed on one side below the cooling box, and an mounting bracket fixedly installed on the top of the cooling box, the mounting bracket being fixedly connected to the filter housing.

[0007] Preferably, a temperature-conducting ring is fixedly installed on the outside of the cooling tube. Multiple temperature-conducting rings are arranged at intervals, and a number of flow holes are provided inside the temperature-conducting rings.

[0008] Preferably, a perforated plate is fixedly installed on the upper part of the filter box, a bag mounting ring plate is provided above the perforated plate, and a bag is fixedly installed below the bag mounting ring plate, with the bag extending to the lower part of the perforated plate.

[0009] Preferably, a connecting pipe is fixedly installed on the top of the filter box, the lower end of the connecting pipe passes through the interior of the filter box and extends into the interior of the filter bag, a top pipe is fixedly installed on the top of the connecting pipe, an air outlet pulse solenoid valve is fixedly installed on one side of the top pipe, and an air outlet pipe is fixedly installed on one side of the air outlet pulse solenoid valve.

[0010] Preferably, a dust removal pulse solenoid valve is fixedly installed on the other side of the top pipe, a dust removal pipe is fixedly installed on one side of the dust removal pulse solenoid valve, a pump box is provided below the dust removal pipe, and the pump box is fixedly connected to the filter box.

[0011] Preferably, a hopper is fixedly installed at the bottom of the filter box, a discharge electric valve is fixedly installed at the bottom of the hopper, and a discharge pipe is fixedly installed at the bottom of the discharge electric valve.

[0012] Preferably, a front cover is fixedly installed on the front end face of the filter box, and support legs are symmetrically fixedly installed on both sides below the filter box.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model features a cooling box installed on one side of the filter housing, with a cooling pipe inside. High-temperature boiler flue gas first enters the cooling pipe via a gas supply pipe, and cooling water is supplied to the cooling box via the inlet pipe of an external cooling water supply device to cool the high-temperature flue gas. The treated flue gas then enters the filter housing via an inlet pipe for filtration. This design effectively prevents high-temperature flue gas from directly impacting the internal structure of the filter housing, preventing structural damage caused by high temperatures, and ensuring the integrity and stability of the dust collector's internal structure. This, in turn, facilitates stable and efficient filtration of the flue gas, improving the performance and lifespan of the dust collector.

[0015] 2. This utility model is equipped with multiple temperature-conducting rings arranged at intervals, which increases the contact area between the cooling pipe and the cooling water when cooling boiler flue gas. This allows for more efficient transfer of heat from the high-temperature flue gas in the cooling pipe to the cooling water, improving cooling efficiency and increasing practicality.

[0016] 3. This utility model, by setting up a dust removal pulse solenoid valve, a dust removal pipe and a pump box with an air pump, facilitates the cleaning of dust adhering to the surface of the filter bag, restores the filter performance of the filter bag, extends the service life of the filter bag, reduces the workload and difficulty of manual dust removal, and improves the automation level and operational stability of the dust collector. Attached Figure Description

[0017] Fig. 1 This is a front view of the boiler pulse bag dust collector of this utility model;

[0018] Fig. 2 This is a cross-sectional view of the boiler pulse bag filter of this utility model;

[0019] Fig. 3 This is a side view of the temperature-conducting ring sheet of this utility model.

[0020] In the diagram: 1. Filter box; 2. Front cover; 3. Support leg; 4. Air inlet pipe; 5. Cooling box; 6. Air supply pipe; 7. Water inlet pipe; 8. Water outlet pipe; 9. Mounting frame; 10. Bottom hopper; 11. Sludge discharge electric valve; 12. Sludge discharge pipe; 13. Connecting pipe; 14. Top pipe; 15. Air outlet pulse solenoid valve; 16. Air outlet pipe; 17. Dust removal pulse solenoid valve; 18. Dust removal pipe; 19. Pump box; 20. Cooling pipe; 21. Temperature guiding ring; 22. Flow hole; 23. Tube plate; 24. Filter bag. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Please see Figs. 1-3 An embodiment of this utility model provides a boiler pulse bag filter, including a filter housing 1. An air inlet pipe 4 is fixedly installed on one side of the filter housing 1. A cooling box 5 is fixedly installed on one side of the air inlet pipe 4. An air supply pipe 6 is fixedly installed on one side of the cooling box 5. A cooling pipe 20 is fixedly installed inside the cooling box 5. One end of the cooling pipe 20 is connected to the air inlet pipe 4, and the other end of the cooling pipe 20 is connected to the air supply pipe 6. A water inlet pipe 7 is fixedly installed on one side above the cooling box 5. The water inlet pipe 7 is connected to a cooling water supply device. A water outlet pipe 8 is fixedly installed on one side below the cooling box 5. An mounting frame 9 is fixedly installed on the top of the cooling box 5 and is fixedly connected to the filter housing 1.

[0023] The high-temperature boiler flue gas first enters the cooling pipe 20 through the gas transmission pipe 6. Cooling water is then supplied to the cooling box 5 through the water inlet pipe 7 of the external cooling water supply equipment to cool the high-temperature flue gas. The treated flue gas then enters the filter box 1 through the gas inlet pipe 4 for filtration to prevent structural damage caused by the high temperature of the flue gas and to increase its practicality.

[0024] Furthermore, a temperature-conducting ring 21 is fixedly installed on the outside of the cooling tube 20. Multiple temperature-conducting rings 21 are provided and arranged at intervals. A flow hole 22 is provided inside the temperature-conducting ring 21, and a number of flow holes 22 are provided.

[0025] The multiple spaced temperature-conducting rings 21 increase the contact area with the cooling water, enabling more efficient transfer of heat from the high-temperature flue gas inside the cooling pipe 20 to the cooling water, thus improving cooling efficiency. The flow holes 22 ensure that the cooling water can stably pass through the temperature-conducting rings 21, increasing practicality.

[0026] Furthermore, a tube sheet 23 is fixedly installed on the upper part of the filter box 1. A bag mounting ring plate is provided above the tube sheet 23. A bag 24 is fixedly installed below the bag mounting ring plate and extends to the lower part of the tube sheet 23. A support frame is provided inside the bag 24 and is fixedly connected to the bag mounting ring plate to support the bag 24.

[0027] The tube sheet 23 provides a stable installation platform for the filter bag 24. The filter bag 24 can filter the boiler flue gas, separate dust and impurities in the flue gas, and increase its practicality.

[0028] Furthermore, a connecting pipe 13 is fixedly installed on the upper part of the filter box 1. The lower end of the connecting pipe 13 passes through the interior of the filter box 1 and extends into the interior of the filter bag 24. A top pipe 14 is fixedly installed on the upper part of the connecting pipe 13. An air outlet pulse solenoid valve 15 is fixedly installed on one side of the top pipe 14. An air outlet pipe 16 is fixedly installed on one side of the air outlet pulse solenoid valve 15.

[0029] By using the exhaust pulse solenoid valve 15 and the exhaust pipe 16, the filtered flue gas can be easily output by opening the exhaust pulse solenoid valve 15 during boiler flue gas filtration.

[0030] Furthermore, a dust removal pulse solenoid valve 17 is fixedly installed on the other side of the jacking pipe 14, a dust removal pipe 18 is fixedly installed on one side of the dust removal pulse solenoid valve 17, a pump box 19 is provided below the dust removal pipe 18, and the pump box 19 is fixedly connected to the filter box 1. An air pump connected to the dust removal pipe 18 is provided inside the pump box 19.

[0031] When dust removal is required on the surface of the filter bag 24, the dust removal pulse solenoid valve 17 is opened, and the air pump blows airflow into the filter box 1 through the dust removal pipe 18, causing the filter bag 24 to expand and vibrate, thereby shaking off the dust adhering to the surface of the filter bag 24. This pulse cleaning method has good cleaning effect and high efficiency, can restore the filtration performance of the filter bag 24 in time, extend the service life of the filter bag 24, reduce the workload and difficulty of manual cleaning, and improve the automation level and operational stability of the dust collector.

[0032] Furthermore, a hopper 10 is fixedly installed below the filter housing 1, a discharge electric valve 11 is fixedly installed below the hopper 10, and a discharge pipe 12 is fixedly installed below the discharge electric valve 11.

[0033] The bottom hopper 10 is designed to collect the dust and impurities filtered inside the filter housing 1. When it is necessary to discharge impurities, the dust and impurities can be discharged through the discharge pipe 12 by opening the discharge electric valve 11, which avoids the accumulation of dust and impurities at the bottom of the filter housing 1 and increases its practicality.

[0034] Furthermore, a front cover 2 is fixedly installed on the front end face of the filter box 1, and support legs 3 are symmetrically fixedly installed on both sides below the filter box 1.

[0035] The front cover 2 facilitates the inspection and maintenance of the internal components of the filter box 1. The support legs 3 are symmetrically installed on both sides below the filter box 1, which makes the dust collector more stable.

[0036] Working principle: During use, high-temperature boiler flue gas enters the cooling pipe 20 inside the cooling box 5 through the gas transmission pipe 6. An external cooling water supply device supplies cooling water to the cooling box 5 through the water inlet pipe 7. Multiple spaced temperature-conducting rings 21 with internal flow holes 22 increase the contact area between the cooling water and the high-temperature flue gas, efficiently transferring heat from the flue gas to the cooling water, thus cooling the flue gas. The treated flue gas then enters the filter box 1 through the air inlet pipe 4. Inside the filter box 1, the flue gas is filtered through the filter bags 24 fixed by the filter bag mounting ring plate below the tube sheet 23. Dust and impurities are trapped, and the filtered flue gas can be output through the outlet pulse solenoid valve 15 on one side of the top pipe 14 above the connecting pipe 13 and the outlet pipe 16. When dust adheres to the surface of the filter bag 24 and needs to be cleaned, the outlet pulse solenoid valve 15 is closed and the dust removal pulse solenoid valve 17 on the other side of the top pipe 14 is opened. The air pump in the pump box 19 blows air into the filter box 1 through the dust removal pipe 18, causing the filter bag 24 to expand and vibrate to shake off the dust. The bottom hopper 10 collects dust and impurities. When it is necessary to discharge impurities, the discharge electric valve 11 is opened and the dust and impurities are discharged through the discharge pipe 12.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention 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 invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A boiler pulse bag filter, comprising a filter housing (1), characterized in that: An air inlet pipe (4) is fixedly installed on one side of the filter box (1). A cooling box (5) is fixedly installed on one side of the air inlet pipe (4). An air supply pipe (6) is fixedly installed on one side of the cooling box (5). A cooling pipe (20) is fixedly installed inside the cooling box (5). One end of the cooling pipe (20) is connected to the air inlet pipe (4), and the other end of the cooling pipe (20) is connected to the air supply pipe (6). A water inlet pipe (7) is fixedly installed on one side above the cooling box (5). A water outlet pipe (8) is fixedly installed on one side below the cooling box (5). An installation plate frame (9) is fixedly installed on the top of the cooling box (5). The installation plate frame (9) is fixedly connected to the filter box (1).

2. The boiler pulse bag filter according to claim 1, characterized in that: A temperature-conducting ring (21) is fixedly installed on the outside of the cooling tube (20). Multiple temperature-conducting rings (21) are provided and arranged at intervals. A flow hole (22) is provided inside the temperature-conducting ring (21), and there are several flow holes (22).

3. The boiler pulse bag filter according to claim 1, characterized in that: A perforated plate (23) is fixedly installed on the upper part of the filter box (1). A bag mounting ring plate is provided on the upper part of the perforated plate (23). A bag (24) is fixedly installed on the lower part of the bag mounting ring plate, and the bag (24) extends to the lower part of the perforated plate (23).

4. The boiler pulse bag filter according to claim 3, characterized in that: A connecting pipe (13) is fixedly installed on the top of the filter box (1). The lower end of the connecting pipe (13) passes through the interior of the filter box (1) and extends into the interior of the cloth bag (24). A top pipe (14) is fixedly installed on the top of the connecting pipe (13). An air outlet pulse solenoid valve (15) is fixedly installed on one side of the top pipe (14). An air outlet pipe (16) is fixedly installed on one side of the air outlet pulse solenoid valve (15).

5. The boiler pulse bag filter according to claim 4, characterized in that: A dust removal pulse solenoid valve (17) is fixedly installed on the other side of the top pipe (14). A dust removal pipe (18) is fixedly installed on one side of the dust removal pulse solenoid valve (17). A pump box (19) is provided below the dust removal pipe (18), and the pump box (19) is fixedly connected to the filter box (1).

6. The boiler pulse bag filter according to claim 1, characterized in that: A hopper (10) is fixedly installed below the filter box (1), a discharge electric valve (11) is fixedly installed below the hopper (10), and a discharge pipe (12) is fixedly installed below the discharge electric valve (11).

7. The boiler pulse bag filter according to claim 1, characterized in that: A front cover (2) is fixedly installed on the front end face of the filter box (1), and support legs (3) are symmetrically fixedly installed on both sides below the filter box (1).

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