Gasification furnace dust removal device

Abstract

The utility model relates to the technical field of dust removal equipment, and discloses a dust removal device for a gasification furnace, which comprises a shell, a filter chamber and a gas purification chamber are arranged in the shell through a partition plate, a gas inlet and a gas outlet are respectively arranged on the filter chamber and the gas purification chamber, an ash bin is arranged on the shell at the bottom of the filter chamber, and a gas outlet is arranged on the ash bin. A filter bag is arranged in the filter chamber, an airflow hole communicated with a bag opening of the filter bag is formed in the partition plate, an ash removal air pipe communicated with an air source is movably arranged at the top end of the shell on the air purification chamber, and an ash removal nozzle is arranged on the ash removal air pipe. The number of the ash removal nozzles is the same as that of the airflow holes in the direction parallel to the ash removal air pipe; according to the utility model, accurate reverse blowing of the filter bag can be realized, the structure of the ash removal system can be simplified, convenience is provided for maintenance and replacement, and meanwhile, adverse effects of airflow on direct blowing of the ash removal nozzle can be reduced, so that the purpose of prolonging the service life of the ash removal nozzle is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal equipment, in particular to a dust removal device for a gasification furnace. Background Art

[0002] When the factory uses the gasifier for production, it needs to use a dust removal device to filter and remove dust from the gas generated by the gasifier in order to avoid environmental pollution. Most existing dust removal devices use bag filters, which use the filter bags in the bag filters to intercept dust impurities entrained in the gas on the outer bag body of the filter bags to achieve the purpose of gas dust removal and filtration; after use, the bag filter needs to regularly open the cleaning mechanism to back-blow the filter bags so that the dust attached to the filter bags is blown off and falls into the ash bin; and most existing cleaning mechanisms have a soot blowing pipe arranged above each filter bag. Although such a setting can achieve precise soot blowing, the structure is relatively complex and there are great difficulties in maintenance and repair. In addition, all soot blowing pipes are directly exposed above the filter bags. The different corrosive components entrained in different gases will contact with them, which will cause serious erosion and wear to them, resulting in a sharp reduction in their service life. Frequent maintenance and replacement are required, which greatly increases production costs and workload. Utility Model Content

[0003] The purpose of the utility model is to provide a gasification furnace dust removal device, which can not only realize the accurate backblowing of the filter bag and ensure the cleaning effect, but also simplify the structure of the cleaning system and provide convenience for maintenance and replacement. At the same time, it can also reduce the adverse effects on the cleaning nozzle caused by the direct blowing of the airflow to the cleaning nozzle, thereby achieving the purpose of extending the service life of the cleaning nozzle.

[0004] The utility model adopts the following technical solutions:

[0005] A gasification furnace dust removal device comprises a shell, in which a filter chamber and a clean air chamber are arranged through a partition plate, and a gas inlet and an outlet are respectively arranged on the filter chamber and the clean air chamber, an ash bin is arranged on the shell at the bottom of the filter chamber, a filter bag is arranged in the filter chamber, air flow holes connected to the bag opening of the filter bag are arranged on the partition plate, and a cleaning air pipe connected to the air source is movably arranged on the top of the shell on the clean air chamber, and a cleaning nozzle is arranged on the cleaning air pipe, and the number of the cleaning nozzles is the same as the number of the air flow holes in the direction parallel to the cleaning air pipe, wherein in an initial state, the cleaning nozzles do not correspond to the positions of all the air flow holes.

[0006] Preferably, one side of the clean air chamber extends toward the outside of the shell to form a accommodating chamber, and in an initial state, the dust cleaning air pipe is located in the accommodating chamber.

[0007] Preferably, a threaded screw driven by a motor is arranged at the top of the shell, a slider is matched with the threaded screw, and the dust cleaning air pipe is connected to the slider.

[0008] Preferably, a protective cover is provided at the top of the shell, the threaded screw is arranged in the protective cover, and the sliding block passes through the sliding grooves on both sides of the protective cover and is connected to the dust cleaning air pipe.

[0009] Preferably, a connecting rod is elastically provided on the sliding block, and the cleaning air pipe is arranged on the connecting rod. When in operation, the connecting rod contacts the top wall of the partition plate. At this time, the cleaning nozzle is located above the air flow hole. Grooves are provided on both sides of the partition plate at positions opposite to the air flow holes, and both sides of the grooves are connected to the top of the partition plate through inclined transitions; when the connecting rod is located inside the groove, the cleaning nozzle is located in the corresponding air flow hole.

[0010] Preferably, the sliding block is connected to a mounting rod, and the connecting rod is elastically arranged on the mounting rod through a spring.

[0011] Preferably, a roller is movably provided at the bottom end of the connecting rod, guide grooves are provided on both sides of the partition plate, and the groove is provided in the guide groove, wherein when the roller is located inside the guide groove, the spring is in a compressed state.

[0012] Preferably, a guiding slope is provided between the accommodating chamber and the partition plate.

[0013] Preferably, a cover plate is detachably provided at the top of the shell, and the threaded screw and the motor are arranged on the cover plate.

[0014] Preferably, the dust cleaning air pipe is connected to the air source via a retractable bamboo hose.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the utility model can not only realize accurate backblowing of the filter bags and ensure the cleaning effect, but also simplify the structure of the cleaning system, provide convenience for maintenance and replacement, and at the same time reduce the adverse effects on the cleaning nozzles caused by the direct blowing of the airflow to the cleaning nozzles, thereby achieving the purpose of extending the service life of the cleaning nozzles; specifically, by arranging a movable cleaning pipe in the shell, and arranging the same number of cleaning nozzles on the cleaning air pipe in a direction parallel to the cleaning air pipe, it is possible to realize gradual and accurate backblowing of a single row or a single column of filter bags as the cleaning pipe moves, which not only ensures the blowing effect, but also simplifies the structure of the cleaning mechanism and improves the convenience of subsequent maintenance; in addition, by streamlining the number of cleaning air pipes and cleaning nozzles, and making the cleaning nozzles deviate from the position of the airflow hole in the non-cleaning state, the adverse effects on the cleaning nozzles and cleaning air pipes caused by the direct blowing of the airflow to the cleaning nozzles can be greatly reduced, greatly extending their service life and saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0017] Figure 2 This is a schematic diagram of the structure of the partition plate of the embodiment of the present application;

[0018] Figure 3 This is a schematic diagram of the installation of the dust cleaning pipe in the embodiment of the present application;

[0019] Figure 4 It is a side cross-sectional view of the accommodation chamber according to an embodiment of the present application. DETAILED DESCRIPTION

[0020] The following is a clear and complete description of the present invention in conjunction with the accompanying drawings and embodiments:

[0021] like Figures 1 to 4 As shown, a gasification furnace dust removal device described in the utility model includes a shell 1, a filter chamber and a clean air chamber are arranged in the shell 1 through a partition plate 6, the filter chamber is located at the bottom, and a gas inlet 2 is arranged on one side, and the clean air chamber is located at the top and a gas outlet 3 is arranged on the upper side, an ash bin 4 is arranged on the shell 1 at the bottom of the filter chamber, and a discharge valve is arranged at the bottom of the ash bin 4, and the ash bin 4 is used for receiving dust filtered from the filter bag 5 in the filter chamber and dust blown back from the filter bag 5, so as to facilitate subsequent centralized discharge.

[0022] A filter bag 5 is arranged in the filter chamber, and a plurality of filter bags 5 are evenly arranged. An air flow hole 7 connected to the bag mouth of the filter bag 5 is arranged on the partition plate 6, which is used for the outflow and discharge of the filtered gas, and also provides a channel for the backblowing and cleaning of the filter bag 5. A cleaning air pipe 8 is movably arranged on the top of the shell 1 on the clean air chamber. The cleaning air pipe 8 is connected to the air source, and the air source can be a gas storage tank 9 arranged on the shell 1. The gas storage tank 9 is provided with a pulse valve for controlling the gas outlet. The cleaning air pipe 8 is preferably connected to the gas storage tank 9 with a retractable flexible bamboo hose to avoid being affected by the movement of the cleaning air pipe 8. In addition, the bamboo soft hose The tube is preferably made of high temperature resistant and corrosion resistant material; a cleaning nozzle 10 is provided on the cleaning air pipe 8, and the number of the cleaning nozzles 10 is the same as the number of the air flow holes 7 in the direction parallel to the cleaning air pipe 8, so as to ensure that the backblowing cleaning operation of the single row or single column filter bags 5 is realized as the cleaning air pipe 8 moves. In the initial state, the cleaning nozzle 10 does not correspond to the positions of all the air flow holes 7, so as to avoid the gas directly contacting the cleaning nozzle 10 and the cleaning air pipe 8 after flowing out of the air flow hole 7, causing the cleaning nozzle 10 and the cleaning air pipe 8 to suffer from erosion and corrosion for a long time, resulting in a shortened service life.

[0023] The utility model provides a single cleaning air pipe 8, and provides a cleaning nozzle 10 matching the single row or single column filter bag 5 on the cleaning air pipe 8. While simplifying the cleaning structure to provide convenience for subsequent maintenance, it can also achieve accurate backblowing of the filter bag 5 as the cleaning air pipe 8 moves, thereby ensuring the backblowing effect. At the same time, it also avoids the wear and corrosion caused by direct gas scouring of the cleaning air pipe 8 and the cleaning nozzle 10, thereby extending the service life of the two. The utility model has a simple structure and strong practicality.

[0024] Furthermore, one side of the clean air chamber extends to the outside of the shell 1 to form a receiving chamber 11. In the initial state, the cleaning air pipe 8 is located in the receiving chamber 11; the receiving chamber 11 provides a storage space for the cleaning air pipe 8 and the cleaning nozzle 10, avoiding the location of the airflow hole 7, and avoiding the direct contact of the airflow with the cleaning air pipe 8 and the cleaning nozzle 10 during operation. In addition, in this embodiment, a threaded screw driven by a motor 12 is provided at the top of the shell 1, and a slider is matched on the threaded screw, and the cleaning air pipe 8 is connected to the slider. The motor 12 is used to drive the threaded screw to rotate, and then the slider drives the cleaning air pipe 8 to move, which effectively ensures the stability and accuracy of the movement of the cleaning air pipe 8. Preferably, in this embodiment, a cover plate 13 is detachably provided at the top of the shell 1, the threaded screw is provided on the side of the cover plate 13 close to the inside of the shell 1, and the motor 12 is provided on the outside of the cover plate 13. The provision of the cover plate 13 facilitates the subsequent inspection and maintenance of related components. In addition, a protective cover 14 is preferably provided at the top of the housing 1, and a threaded screw is provided in the protective cover 14. The slider passes through the slide grooves on both sides of the protective cover 14 and is connected to the dust cleaning air pipe 8. The setting of the protective cover 14 can protect the threaded screw, ensure its transmission accuracy and reduce the wear and corrosion caused by the airflow.

[0025] Furthermore, in the present embodiment, a connecting rod 15 is elastically provided on the slider, and the cleaning air pipe 8 is provided on the connecting rod 15. When working, the connecting rod 15 contacts the top wall of the partition plate 6. At this time, the connecting rod 15 is in a state of moving upward relative to the slider due to the elastic force, and the cleaning nozzle 10 is located above the air flow hole 7; grooves 16 are provided on both sides of the partition plate 6 at positions opposite to the air flow holes 7, and both sides of the grooves 16 are connected to the top of the partition plate 6 through inclined transitions; when the connecting rod 15 is located inside the grooves 16, the elastic force on the connecting rod 15 is gradually released, and the cleaning nozzle 10 is located in the corresponding air flow hole 7, thereby further ensuring that the cleaning nozzle 10 acts accurately in the corresponding air flow hole 7, thereby realizing accurate backblowing of the corresponding filter bag 5. The transition setting between the two sides of the groove 16 and the top inclined surface of the partition plate 6 facilitates the movement of the connecting rod 15 into and out of the groove 16; in this embodiment, when the connecting rod 15 is preferably located in the groove 16, the cleaning nozzle 10 is located in the middle of the air flow hole 7, and the length of the air flow hole 7 is greater than the length of the groove 16, so that as the connecting rod 15 moves, the cleaning nozzle 10 is gradually moved out of the air flow hole 7 without causing any obstruction.

[0026] Furthermore, in this embodiment, the slider is connected to the mounting rod 17, and the mounting rod 17 is provided with a through hole, and the connecting rod 15 is movably arranged in the through hole, and is elastically connected to the mounting rod 17 through a spring 18. A roller 19 is movably arranged at the bottom end of the connecting rod 15 to reduce the wear between the connecting rod 15 and the partition plate 6 during the movement of the spray air pipe; guide grooves 20 are arranged on both sides of the partition plate 6, and the groove 16 is arranged in the guide groove 20. The transition slopes on both sides of the groove 16 are in contact with the bottom wall of the guide groove 20, wherein when the roller 19 is located in the guide groove 20, the spring 18 is in a compressed state, and the cleaning nozzle 10 is separated from the air flow hole 7 at this time. When the roller 19 is located in the groove 16, the compressed spring 18 is gradually restored, and the cleaning nozzle 10 gradually moves down into the air flow hole 7, thereby ensuring the accurate backblowing of the filter bag 5.

[0027] In this embodiment, a guide slope 21 is provided between the accommodating chamber 11 and the partition plate 6 to facilitate the movement of the cleaning air pipe 8 in and out of the accommodating chamber 11. At the same time, the guide slope 21 can also be used to play a certain degree of blocking role, providing certain protection for the cleaning air pipe 8 and the cleaning nozzle 10.

[0028] When the utility model is used for cleaning, it is only necessary to turn on the motor 12 to drive the threaded screw to rotate, thereby driving the cleaning air pipe 8 to move, and realizing the gradual backblowing cleaning operation of multiple columns or rows of filter bags 5 in the direction perpendicular to the cleaning air pipe 8. The structure is simple, easy to use and practical. In addition, it is worth noting that since only the structure related to cleaning is protected in this embodiment, the rest of the parts adopt the same structure as the bag dust collector in the prior art, so many well-known prior arts do not belong to the protection scope of this application and are well known to those skilled in the art, and are not further described in this application document.

Claims

1. A gasification furnace dust removal device, comprising a shell, wherein a filter chamber and a clean air chamber are arranged in the shell through a partition plate, a gas inlet and an outlet are arranged on the filter chamber and the clean air chamber respectively, and an ash bin is arranged on the shell at the bottom of the filter chamber, characterized in that: A filter bag is arranged in the filter chamber, and an air flow hole connected to the bag mouth of the filter bag is arranged on the partition plate. A cleaning air pipe connected to the air source is movably arranged on the top of the shell on the clean air chamber, and a cleaning nozzle is arranged on the cleaning air pipe. The number of the cleaning nozzles is the same as the number of the air flow holes in the direction parallel to the cleaning air pipe. In an initial state, the cleaning nozzles do not correspond to the positions of all the air flow holes.

2. The gasification furnace dust removal device according to claim 1, characterized in that: One side of the clean air chamber extends toward the outside of the shell to form a receiving chamber. In an initial state, the dust cleaning air pipe is located in the receiving chamber.

3. The gasification furnace dust removal device according to claim 2, characterized in that: A threaded screw driven by a motor is arranged at the top of the shell, a sliding block is matched on the threaded screw, and the dust cleaning air pipe is connected to the sliding block.

4. The gasification furnace dust removal device according to claim 3, characterized in that: A protective cover is arranged on the top of the shell, the threaded screw is arranged in the protective cover, and the sliding block passes through the sliding grooves on both sides of the protective cover and is connected with the dust cleaning air pipe.

5. The gasification furnace dust removal device according to claim 4, characterized in that: A connecting rod is elastically provided on the sliding block, and the cleaning air pipe is provided on the connecting rod. When in operation, the connecting rod contacts the top wall of the partition plate. At this time, the cleaning nozzle is located above the air flow hole. Grooves are provided on both sides of the partition plate at positions opposite to the air flow holes, and both sides of the grooves are connected to the top of the partition plate through inclined transitions; when the connecting rod is located inside the groove, the cleaning nozzle is located in the corresponding air flow hole.

6. The gasification furnace dust removal device according to claim 5, characterized in that: The sliding block is connected to the mounting rod, and the connecting rod is elastically arranged on the mounting rod through a spring.

7. The gasification furnace dust removal device according to claim 6, characterized in that: A roller is movably provided at the bottom end of the connecting rod, guide grooves are provided on both sides of the partition plate, and the groove is provided in the guide grooves, wherein when the roller is located inside the guide grooves, the spring is in a compressed state.

8. The gasification furnace dust removal device according to claim 7, characterized in that: A guiding slope is arranged between the accommodating chamber and the partition plate.

9. The dust removal device for a gasifier according to claim 3, characterized in that: A cover plate is detachably provided on the top of the shell, and the threaded screw and the motor are arranged on the cover plate.

10. The dust removal device for a gasifier according to claim 1, characterized in that: The dust cleaning air pipe is connected to the air source through a retractable bamboo hose.

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