Exhaust gas prefilter device

Abstract

The utility model discloses a kind of waste gas prefiltering device, including shell, the two sides inner wall of the shell are fixedly connected with horizontal seat, the top and bottom of the horizontal seat are between shell inner wall and are jointly provided with two sealing valve grooves;The outer surface side of the shell is fixedly connected with valve plate box.The utility model in the present application, by being set up horizontal seat, sealing valve groove, valve plate box, double drive component, screw rod, door type valve plate, filter plate assembly, observation window and cleaning mechanism, in daily use process, filter plate assembly is installed above or below horizontal seat, after a period of time is filtered waste gas, the condition of impurity filter plate can be observed through observation window, and cleaning mechanism can avoid the impurity on observation window to affect observation effect, when needing to replace filter plate assembly, after completing installation of spare filter plate assembly, the opening and closing position of two door type valve plates is switched, the replacement of filter plate assembly can be completed, replacement efficiency is high, and replacement process does not need to close inlet pipeline.

Description

Technical Field

[0001] This utility model relates to the field of pre-filtration technology, and in particular to a pre-filtration device for exhaust gas. Background Technology

[0002] Pre-filtration of exhaust gas is one of the important steps in exhaust gas treatment, which can protect subsequent treatment equipment.

[0003] Exhaust gas pre-filtration systems typically include a pre-filter to intercept large particulate matter in the exhaust gas. These systems are widely used in industrial emissions, especially when treating exhaust gases containing large amounts of dust and particulate matter.

[0004] A prior art patent (CN218530297U) discloses a pre-emission filtration device for a desulfurization tower, comprising a housing, an air inlet fixedly installed at the top left end of the housing, a second motor fixedly installed on the left side of the housing, a first fan blade fixedly installed on the output shaft of the second motor, a cover plate movably installed at the top left end of the housing, and an impurity filter plate movably installed at the left end inside the housing. This invention achieves good exhaust gas filtration effect by incorporating the impurity filter plate, air inlet, and second motor.

[0005] This pre-filter for exhaust gas has a good filtration effect. In actual use, it removes larger impurities carried in the exhaust gas through a pre-filter plate. However, over time, impurities accumulate on the surface of the filter plate, affecting its ventilation effect. Workers need to open the cover and disassemble it. Although disassembly is simple, the exhaust gas inlet pipe must be closed during disassembly. This is mainly because disassembling the filter plate leaves the casing open. If the exhaust gas inlet pipe is not closed, exhaust gas will overflow, polluting the environment. However, closing the exhaust gas inlet pipe will affect the filtration effect and efficiency. Therefore, a pre-filter for exhaust gas that allows for quick replacement of the filter plate without closing the inlet pipe is proposed. Utility Model Content

[0006] This utility model is a pre-filter for exhaust gas proposed to overcome the shortcomings of the existing technology.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a pre-filter for exhaust gas, comprising a housing, wherein a cross seat is fixedly connected to the inner walls on both sides of the housing, and two sealing valve grooves are opened between the top and bottom of the cross seat and the inner wall of the housing.

[0008] A valve plate box is fixedly connected to one side of the outer surface of the outer shell, and the valve plate box is connected to four sealing valve grooves. A housing is fixedly installed on one side of the outer surface of the valve plate box.

[0009] The housing is equipped with a dual drive assembly. Both movable ends of the dual drive assembly are fixedly connected to screws, and the screws pass through the valve plate box and are rotatably connected to it. The outer surfaces of the two screws are threaded with gate-shaped valve plates, and the gate-shaped valve plates are sealed and inserted with two adjacent sealing valve grooves.

[0010] Two filter plate assemblies are sealed and inserted between the outer shell and the cross seat;

[0011] Two observation windows are symmetrically fixedly embedded on one side of the outer surface of the housing, and both observation windows are equipped with cleaning mechanisms.

[0012] Furthermore, the dual-drive assembly includes a handwheel, which is disposed outside the housing. The mounting shaft of the handwheel passes through the housing, and the handwheel facilitates manual operation of the dual-drive assembly.

[0013] Furthermore, the dual-drive assembly also includes two synchronous pulleys, which are fixedly connected to adjacent screws respectively, and the mounting shaft of the handwheel is fixedly connected to the adjacent synchronous pulleys. The two synchronous pulleys are meshed together with a synchronous belt, which can synchronously drive the two screws to rotate.

[0014] Furthermore, both of the filter plate assemblies include a mounting plate, which is fixedly connected to the housing. A frame is fixedly connected to one side of the outer surface of the mounting plate, and the frame is sealed and inserted into the housing and the cross seat. The mounting plate facilitates the insertion or removal of the frame.

[0015] Furthermore, an impurity filter plate is fixedly connected to the inner surface of the frame, which can filter larger impurities in the exhaust gas.

[0016] Furthermore, both cleaning mechanisms include a knob, and the mounting shaft of the knob passes through the observation window and is rotatably connected to it in a sealed manner. A scraper is fixedly connected to the mounting shaft of the knob, and the scraper is in contact with the inner wall of the observation window. The knob is designed to facilitate manual rotation of the scraper.

[0017] Furthermore, the helical directions of the two screws are opposite, and when the two screws rotate synchronously, they can drive the two gate valve plates to move in opposite directions.

[0018] The beneficial effects of this utility model are:

[0019] In use, this utility model provides a pre-filter for exhaust gas. It comprises a horizontal seat, a sealing valve groove, a valve plate box, a dual-drive assembly, a screw, a gate-type valve plate, a filter plate assembly, an observation window, and a cleaning mechanism. During daily use, the filter plate assembly is installed above or below the horizontal seat. After filtering exhaust gas for a period of time, the condition of the filter plate can be observed through the observation window. The cleaning mechanism prevents impurities on the observation window from affecting the observation effect. When the filter plate assembly needs to be replaced, after installing the spare filter plate assembly, simply switch the opening and closing positions of the two gate-type valve plates to complete the replacement. The replacement efficiency is high, and the replacement process does not require shutting down the air inlet pipe, ensuring the filtration effect and efficiency of the exhaust gas. Attached Figure Description

[0020] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 : A perspective view of this utility model;

[0022] Figure 2 : Front sectional view of this utility model;

[0023] Figure 3 : Side sectional view of this utility model.

[0024] The attached figures are labeled as follows:

[0025] 1. Housing; 2. Knob; 3. Observation window; 4. Valve plate box; 5. Handwheel; 6. Housing; 7. Mounting plate; 8. Frame; 9. Impurity filter plate; 10. Screw; 11. Synchronous belt; 12. Gate-shaped valve plate; 13. Synchronous pulley; 14. Scraper; 15. Horizontal seat; 16. Sealing valve groove. Detailed Implementation

[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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figures 1 to 3As shown, a pre-filter for exhaust gas is disclosed, comprising an outer shell 1, with a cross seat 15 fixedly connected to the inner walls of both sides of the outer shell 1. Two sealing valve grooves 16 are opened between the top and bottom of the cross seat 15 and the inner wall of the outer shell 1. A valve plate box 4 is fixedly connected to one side of the outer surface of the outer shell 1, and the valve plate box 4 is connected to the four sealing valve grooves 16. A housing 6 is fixedly installed on one side of the outer surface of the valve plate box 4.

[0028] The housing 6 is equipped with a dual-drive assembly. Both movable ends of the dual-drive assembly are fixedly connected to screws 10, which penetrate the valve plate housing 4 and are rotatably connected thereto. A gate-type valve plate 12 is threaded onto the outer surface of each screw 10. The helical directions of the two screws 10 are opposite, and the gate-type valve plate 12 is sealed and inserted into two adjacent sealing valve grooves 16. The dual-drive assembly includes a handwheel 5, which is located outside the housing 6. The mounting shaft of the handwheel 5 penetrates the housing 6. The dual-drive assembly also includes two synchronous pulleys 13. The synchronous pulleys 13 are fixedly connected to the adjacent screws 10 respectively, and the mounting shaft of the handwheel 5 is fixedly connected to the adjacent synchronous pulleys 13. The synchronous belts 11 are meshed and sleeved between the two synchronous pulleys 13. Sealing gaskets are provided in both sealing valve grooves 16 to ensure the sealing of the connection between the gate valve plate 12 and the sealing valve groove 16. The sealing valve groove 16 needs to be cleaned together when cleaning the whole. The screws 10 and the valve plate box 4 are connected by a bearing rotation. The inner ring of the bearing is fixedly connected to the screws 10, and the outer ring of the bearing is fixedly connected to the valve plate box 4.

[0029] Two filter plate assemblies are sealed and inserted between the outer shell 1 and the cross seat 15. Both filter plate assemblies include a mounting plate 7, which is fixedly connected to the outer shell 1. The mounting plate 7 is fixed to the outer shell 1 by two bolts, which facilitates the installation and removal of the mounting plate 7. A frame 8 is fixedly connected to one side of the outer surface of the mounting plate 7, and the frame 8 is sealed and inserted with the outer shell 1 and the cross seat 15. An impurity filter plate 9 is fixedly connected to the inner surface of the frame 8. Sealing gaskets are installed on both sides of the outer surface of the frame 8 to ensure the sealing after the frame 8 is installed.

[0030] Two observation windows 3 are symmetrically fixedly embedded on one side of the outer surface of the outer shell 1. Both observation windows 3 are equipped with cleaning mechanisms. Both cleaning mechanisms include knobs 2, and the mounting shaft of the knobs 2 passes through the observation windows 3 and is sealed and rotatably connected to them. The mounting shaft of the knobs 2 is fixedly connected to a scraper 14, and the scraper 14 is in contact with the inner wall of the observation window 3. An annular limiting groove is opened on the outer surface of the mounting shaft of the knobs 2. A part of the observation window 3 is located in the limiting groove, thereby achieving the purpose of limiting rotation. A sealing ring is installed at the rotation point to ensure the sealing of the rotation point.

[0031] Working principle: During use, the top impurity filter plate 9 is put into use. After a period of time, when the top impurity filter plate 9 needs to be removed and replaced, turn the handwheel 5. The handwheel 5 drives the synchronous pulley 13 connected to it to rotate. The two synchronous pulleys 13 rotate synchronously under the action of the synchronous belt 11, thereby driving the two screws 10 to rotate. The two screws 10 respectively drive the gate valve plates 12 connected to them to move. The gate valve plates 12 move in opposite directions. The top gate valve plate 12 is inserted into the sealing valve groove 16 and moves into the valve plate box 4 until the bottom gate valve plate 12 is fully inserted, thereby completing the switching. At this time, the top filter plate assembly can be removed and replaced with a new filter plate assembly.

[0032] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A pre-filter for exhaust gas, comprising a housing (1), characterized in that: The inner walls of both sides of the outer shell (1) are fixedly connected to a horizontal seat (15), and the top and bottom of the horizontal seat (15) are provided with two sealing valve grooves (16) between them and the inner wall of the outer shell (1). A valve plate box (4) is fixedly connected to one side of the outer surface of the outer shell (1), and the valve plate box (4) is connected to four sealing valve grooves (16). A housing (6) is fixedly installed on one side of the outer surface of the valve plate box (4). The housing (6) is equipped with a dual drive assembly. Both movable ends of the dual drive assembly are fixedly connected with screws (10). The screws (10) pass through the valve plate box (4) and are rotatably connected to it. The outer surfaces of the two screws (10) are threaded with gate-type valve plates (12), and the gate-type valve plates (12) are sealed and inserted with the two adjacent sealing valve grooves (16). Two filter plate assemblies are sealed and inserted between the outer shell (1) and the cross seat (15); Two observation windows (3) are symmetrically fixedly embedded on one side of the outer surface of the outer shell (1), and both observation windows (3) are equipped with cleaning mechanisms.

2. The exhaust gas pre-filtration device according to claim 1, characterized in that: The dual drive assembly includes a handwheel (5), which is located outside the housing (6), and the mounting shaft of the handwheel (5) passes through the housing (6).

3. The exhaust gas pre-filtration device according to claim 2, characterized in that: The dual drive assembly also includes two synchronous pulleys (13), and the two synchronous pulleys (13) are fixedly connected to the adjacent screws (10) respectively, and the mounting shaft of the handwheel (5) is fixedly connected to the adjacent synchronous pulleys (13), and the two synchronous pulleys (13) are meshed together by a synchronous belt (11).

4. The exhaust gas pre-filtration device according to claim 1, characterized in that: Both of the filter plate assemblies include a mounting plate (7), and the mounting plate (7) is fixedly connected to the housing (1). A frame (8) is fixedly connected to one side of the outer surface of the mounting plate (7), and the frame (8) is sealed and inserted into the housing (1) and the cross seat (15).

5. The exhaust gas pre-filtration device according to claim 4, characterized in that: An impurity filter plate (9) is fixedly connected to the inner surface of the frame (8).

6. The exhaust gas pre-filtration device according to claim 1, characterized in that: Both cleaning mechanisms include a knob (2), and the mounting shaft of the knob (2) passes through the observation window (3) and is rotatably connected thereto in a sealed manner. The mounting shaft of the knob (2) is fixedly connected to a scraper (14), and the scraper (14) is in contact with the inner wall of the observation window (3).

7. The exhaust gas pre-filtration device according to claim 1, characterized in that: The helical directions of the two screws (10) are opposite.

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