A multi-stage combined treatment device for coke oven waste gas

Abstract

This utility model provides a multi-stage combined treatment device for coke oven waste gas, including a purification box, an air inlet, and an air outlet. The air inlet is fixedly connected to one side of the purification box, and the air outlet is fixedly connected to the top of the purification box. Inside the purification box, a filter screen, a first activated carbon plate, and a second activated carbon plate are sequentially fixedly installed. A cleaning mechanism is provided on the top of the purification box; the cleaning mechanism includes an electric push rod fixedly installed on the top of the purification box. This utility model relates to the technical field of coke ovens. By setting up a cleaning mechanism, when a large amount of dust adheres to the filter screen, the electric push rod is activated, causing the cleaning block to move back and forth up and down. Simultaneously, the brush also moves back and forth up and down synchronously with the cleaning block. During the brush's movement, the dust particles on the surface of the filter screen are brushed off and fall into the collection box, preventing blockage and thus improving purification efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of coke ovens, specifically to a multi-stage combined treatment device for waste gas from coke ovens. Background Technology

[0002] A coke oven is a furnace used to refine coke. A modern coke oven consists of a carbonization chamber, combustion chamber, regenerator, inclined flue, roof, foundation, and flue. In the carbonization chamber, coal is heated and turned into coke under air-isolated conditions. The lifespan of a single coke oven is generally around 25 years, but can reach over 30 years under good operation and maintenance.

[0003] The patent application "CN220779600U" discloses a multi-stage combined waste gas treatment device, including a waste gas treatment device body. A motor is fixedly installed at the upper end of the waste gas treatment device body, and a worm gear is fixedly installed on the output shaft of the motor. A sealed bearing is rotatably installed inside the waste gas treatment device body, and an air inlet pipe is rotatably installed at the upper end of the sealed bearing. A U-shaped frame is fixedly installed inside the waste gas treatment device body. Both the U-shaped frame and the waste gas treatment device body have symmetrically opened sliding grooves. When it is necessary to replace the filter screen inside the organic matter adsorption box or the acid and alkali adsorption box, the organic matter adsorption box can be pulled outward. At this time, the organic matter adsorption box will drive the slider and the limiting block fixedly connected to the organic matter adsorption box to slide in the sliding groove and the limiting groove respectively. When it is necessary to replace the filter screen inside the fine particle adsorption box or the coarse particle adsorption box, the fine particle adsorption box can be slid outward inside the U-shaped frame. By sliding the organic matter adsorption box or the fine particle adsorption box in the sliding groove and the limiting groove respectively, the filter assembly can be replaced in groups, which facilitates maintenance and cleaning.

[0004] However, the above-mentioned device still has the following problems during implementation:

[0005] Coke ovens produce a large amount of flue gas during coke refining. To avoid direct emission into the air and causing pollution, the flue gas needs to be purified. The flue gas enters through the inlet of a multi-stage combined waste gas treatment device. The dust particles in the flue gas are filtered out by the filter screen, and then adsorbed by multiple activated carbon plates, achieving multi-stage treatment of the flue gas. However, with prolonged use, a large amount of dust particles will adhere to the surface of the filter screen, causing blockage and reducing the purification efficiency of the multi-stage combined waste gas treatment device. Utility Model Content

[0006] The purpose of this invention is to provide a multi-stage combined treatment device for coke oven waste gas to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A multi-stage combined treatment device for coke oven exhaust gas includes a purification box, an air inlet, and an air outlet. The air inlet is fixedly connected to one side of the purification box, and the air outlet is fixedly connected to the top of the purification box. A filter screen, a first activated carbon plate, and a second activated carbon plate are sequentially fixedly installed inside the purification box. A cleaning mechanism is provided on the top of the purification box.

[0009] The cleaning mechanism includes an electric push rod fixedly installed on the top of the purification box. The output end of the electric push rod extends into the interior of the purification box and is fixedly connected to a cleaning block. A brush is fixedly connected to one side of the cleaning block. One side of the brush contacts one side of the filter screen. A collection box for collecting dust is provided at the bottom of the brush.

[0010] An air collection mechanism is fixedly mounted on the cleaning block. When the cleaning mechanism cleans the filter screen, the air collection mechanism sprays out airflow to prevent dust particles from adhering to the brush.

[0011] Preferably, the gas collection mechanism includes a U-shaped jet box fixedly installed on the surface of the cleaning block, and one side of the U-shaped jet box is fixedly connected to two jet pipes through a one-way pressure valve;

[0012] A gas collection box is fixedly connected to one side of the cleaning block. An air inlet pipe is fixedly connected to the top of the gas collection box. A transmission pipe is fixedly connected to one side of the gas collection box. One end of the transmission pipe is fixedly connected to one side of the U-shaped jet box. A pushing block is slidably connected inside the cleaning block. A pushing rod is fixedly connected to one side of the pushing block. A triangular squeezing block is fixedly connected to one side of the pushing rod. An abutment block that cooperates with the triangular squeezing block is fixedly connected to the inner wall of the purification box. A spring is sleeved on the surface of the pushing rod. One end of the spring is fixedly connected to one side of the triangular squeezing block, and the other end of the spring is fixedly connected to the inner wall of the gas collection box.

[0013] Preferably, a first one-way valve is fixedly installed on the surface of the intake pipe, and a second one-way valve is fixedly installed on the surface of the transmission pipe.

[0014] Preferably, a piston plate is fixedly connected to one side of the push block, and the piston plate is made of rubber.

[0015] Preferably, the number of the abutting blocks is several, and one side is arc-shaped.

[0016] Preferably, a retaining ring is fixedly connected to one side of the collection box, and a retaining post is slidably connected to the inner wall of the retaining ring, with the bottom of the retaining post fixedly connected to the inner wall of the purification box.

[0017] Preferably, an inspection port is provided on one side of the purification box, and a door for sealing the inspection port is hinged to one side of the purification box.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This utility model, by setting up a cleaning mechanism, can drive the cleaning block to move back and forth up and down when a large amount of dust adheres to the filter screen by activating the electric push rod. The brush will also move back and forth up and down in sync with the cleaning block. During the movement of the brush, the dust particles on the surface of the filter screen will be brushed off and fall into the collection box to avoid clogging, thereby improving the purification efficiency.

[0020] 2. This utility model, by setting up an air collection mechanism, enables the triangular squeezing block in the air collection mechanism to move up and down simultaneously while the cleaning block moves back and forth. When the sloping part of the triangular squeezing block contacts the arc-shaped part of the abutment block, the squeezing effect causes the triangular squeezing block to drive the push rod, push block, and piston plate to move to the right, squeezing the gas in the air collection box. The gas will then enter the interior of the U-shaped jet box through the transmission pipe. When the triangular squeezing block moves to a point where it no longer contacts the abutment block, the elastic force generated by the spring will push the triangular squeezing block, push rod, push block, and piston plate to reset. At this time, the air collection box is under negative pressure, and the gas will enter the air collection box through the air inlet pipe. This cycle continues, intermittently compressing the gas into the U-shaped jet box. When the gas pressure inside the U-shaped jet box exceeds the limit of the one-way pressure valve, the gas will be intermittently ejected from the jet pipe, blowing onto the surface of the brush and blowing off dust particles, thereby improving cleaning efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0022] Figure 2 This is a perspective view of the side section of this utility model;

[0023] Figure 3 This utility model Figure 2 A magnified view of a section at point A in the middle;

[0024] Figure 4 This is a schematic diagram of the main cross-section of the present invention;

[0025] Figure 5 This is a perspective view of a partial structure of the cleaning mechanism of this utility model;

[0026] Figure 6 This is a perspective view of the gas collection mechanism of this utility model.

[0027] In the diagram: 1. Purification box; 2. Air inlet; 3. Air outlet; 4. Filter screen; 5. First activated carbon plate; 6. Second activated carbon plate; 7. Electric push rod; 8. Cleaning block; 9. Brush; 10. Collection box; 11. U-shaped jet box; 12. Jet pipe; 13. Air collection box; 14. Air inlet pipe; 15. Transmission pipe; 16. Push block; 17. Push rod; 18. Triangular compression block; 19. Abutment block; 20. Spring; 21. Piston plate; 22. Snap ring; 23. Snap post; 24. Inspection port; 25. Door. Detailed Implementation

[0028] 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.

[0029] Please see Figures 1-6 This utility model provides a technical solution:

[0030] Example 1:

[0031] A multi-stage combined treatment device for coke oven exhaust gas includes a purification box 1, an air inlet 2 and an air outlet 3. The air inlet 2 is fixedly connected to one side of the purification box 1, and the air outlet 3 is fixedly connected to the top of the purification box 1. A filter screen 4, a first activated carbon plate 5 and a second activated carbon plate 6 are fixedly installed inside the purification box 1 in sequence. A cleaning mechanism is provided on the top of the purification box 1.

[0032] The cleaning mechanism includes an electric push rod 7 fixedly installed on the top of the purification box 1. The output end of the electric push rod 7 extends into the interior of the purification box 1 and is fixedly connected to a cleaning block 8. A brush 9 is fixedly connected to one side of the cleaning block 8. One side of the brush 9 contacts one side of the filter screen 4. A collection box 10 for collecting dust is provided at the bottom of the brush 9.

[0033] The air collection mechanism is fixedly installed on the cleaning block 8. When the cleaning mechanism cleans the filter screen 4, the air collection mechanism will spray airflow to prevent dust particles from adhering to the brush 9.

[0034] In this embodiment, considering that dust particles will adhere to the surface of the filter screen 4 in large quantities after long-term use, causing blockage and reducing the purification efficiency of the multi-stage combined exhaust gas treatment device, a cleaning mechanism is set up so that when a large amount of dust adheres to the filter screen 4, the electric push rod 7 is activated to drive the cleaning block 8 to move back and forth up and down. The brush 9 will also move back and forth up and down in sync with the cleaning block 8. During the movement of the brush 9, the dust particles on the surface of the filter screen 4 will be brushed off and fall into the collection box 10, avoiding blockage and thus improving the purification efficiency.

[0035] A retaining ring 22 is fixedly connected to one side of the collection box 10, and a retaining post 23 is slidably connected to the inner wall of the retaining ring 22. The bottom of the retaining post 23 is fixedly connected to the inner wall of the purification box 1.

[0036] In this embodiment, by setting the retaining ring 22 and retaining post 23, the collection box 10 can be restricted to prevent it from shifting, so that the collection box 10 is always at the bottom of the brush 9, which can effectively collect dust particles.

[0037] A maintenance port 24 is provided on one side of the purification box 1, and a door 25 for sealing the maintenance port 24 is hinged to one side of the purification box 1.

[0038] In this embodiment, by setting up an inspection port 24 and a door 25, the inspection port 24 can be opened by rotating the door 25 around the hinge. Then, the collection box 10 can be moved upward to make the locking post 23 leave the inside of the locking ring 22. After that, the collection box 10 can be taken out and the dust particles inside can be emptied.

[0039] Example 2:

[0040] Based on Embodiment 1, the cleaning mechanism in this embodiment will drive the brush 9 to move up and down to clean the dust particles on the surface of the filter screen 4. However, during the cleaning process, some dust particles will adhere to the brush 9, which will affect the cleaning effect. In this application, the air collection mechanism includes a U-shaped jet box 11 fixedly installed on the surface of the cleaning block 8. One side of the U-shaped jet box 11 is fixedly connected to two jet pipes 12 through a one-way pressure valve.

[0041] A gas collection box 13 is fixedly connected to one side of the cleaning block 8. An air inlet pipe 14 is fixedly connected to the top of the gas collection box 13. A transmission pipe 15 is fixedly connected to one side of the gas collection box 13. One end of the transmission pipe 15 is fixedly connected to one side of the U-shaped jet box 11. A push block 16 is slidably connected inside the cleaning block 8. A push rod 17 is fixedly connected to one side of the push block 16. A triangular extrusion block 18 is fixedly connected to one side of the push rod 17. An abutment block 19 that cooperates with the triangular extrusion block 18 is fixedly connected to the inner wall of the purification box 1. A spring 20 is sleeved on the surface of the push rod 17. One end of the spring 20 is fixedly connected to one side of the triangular extrusion block 18. The other end of the spring 20 is fixedly connected to the inner wall of the gas collection box 13.

[0042] In this embodiment, by setting up a gas collection mechanism, the triangular extrusion block 18 in the gas collection mechanism can move up and down simultaneously as the cleaning block 8 moves back and forth. When the sloping part of the triangular extrusion block 18 contacts the arc-shaped part of the abutment block 19, it is affected by the extrusion, such as... Figure 4 As shown, the triangular squeezing block 18 drives the push rod 17, push block 16 and piston plate 21 to move to the right, squeezing the gas in the air collection box 13. The gas will enter the interior of the U-shaped jet box 11 through the transmission pipe 15. When the triangular squeezing block 18 moves to a position where it does not contact the abutment block 19, the elastic force generated by the spring 20 will push the triangular squeezing block 18, push rod 17, push block 16 and piston plate 21 to reset. At this time, the air collection box 13 is under negative pressure, and the gas will enter the interior of the air collection box 13 through the air inlet pipe 14. This process is repeated, intermittently compressing the gas into the U-shaped jet box 11. When the gas pressure inside the U-shaped jet box 11 is greater than the limit of the one-way pressure valve, the gas will be intermittently ejected from the jet pipe 12 and blown onto the surface of the brush 9, blowing off the dust particles and thus improving the cleaning efficiency.

[0043] A first check valve is fixedly installed on the surface of the intake pipe 14, and a second check valve is fixedly installed on the surface of the transmission pipe 15.

[0044] In this embodiment, by setting a first one-way valve and a second one-way valve, the first one-way valve can form an air intake pipe 14 that can only allow air to enter the air collection box 13, and the second one-way valve can make the transmission pipe 15 form a pipe that can only allow air to enter the U-shaped jet box 11. When the gas in the air collection box 13 is compressed, it can only enter the interior of the U-shaped jet box 11 through the transmission pipe 15. When a negative pressure is formed in the air collection box 13, the gas will enter the interior of the air collection box 13 through the air intake pipe 14.

[0045] A piston plate 21 is fixedly connected to one side of the push block 16. The piston plate 21 is made of rubber.

[0046] In this embodiment, by setting the piston plate 21, the sealing performance of the gas collection box 13 can be improved. When the push block 16 drives the piston plate 21 to move, the gas in the gas collection box 13 can be compressed.

[0047] The number of abutment blocks 19 is several, and one side is arc-shaped;

[0048] In this embodiment, by setting abutment blocks 19, multiple abutment blocks 19 can be set so that when the triangular extrusion block 18 contacts one side of the abutment block 19, the jet pipe 12 will spray out a stream of air, thus achieving the function of intermittent jetting.

[0049] Working principle: When a large amount of dust adheres to the filter screen 4, the electric push rod 7 is activated, which drives the cleaning block 8 to move up and down back and forth. The brush 9 will also move up and down back and forth in sync with the cleaning block 8. During the movement of the brush 9, the dust particles on the surface of the filter screen 4 will be brushed off and fall into the collection box 10 to avoid clogging, thereby improving the purification efficiency.

[0050] While the cleaning block 8 moves up and down reciprocatingly, the triangular extrusion block 18 in the gas collecting mechanism also moves up and down reciprocatingly simultaneously. When the sloping part of the triangular extrusion block 18 contacts the arc-shaped part of the abutment block 19, it is affected by extrusion, such as... Figure 4 As shown, the triangular squeezing block 18 drives the push rod 17, push block 16 and piston plate 21 to move to the right, squeezing the gas in the air collection box 13. The gas will enter the interior of the U-shaped jet box 11 through the transmission pipe 15. When the triangular squeezing block 18 moves to a position where it does not contact the abutment block 19, the elastic force generated by the spring 20 will push the triangular squeezing block 18, push rod 17, push block 16 and piston plate 21 to reset. At this time, the air collection box 13 is under negative pressure, and the gas will enter the interior of the air collection box 13 through the air inlet pipe 14. This process is repeated, intermittently compressing the gas into the U-shaped jet box 11. When the gas pressure inside the U-shaped jet box 11 is greater than the limit of the one-way pressure valve, the gas will be intermittently ejected from the jet pipe 12 and blown onto the surface of the brush 9, blowing off the dust particles and thus improving the cleaning efficiency.

[0051] It should be noted that the electric actuator 7 is a device or equipment existing in the prior art, or a device or equipment that can be implemented by the prior art, and the specific composition and principle of the power supply of the electric actuator 7 are clear to those skilled in the art, so they will not be described in detail here.

[0052] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage combined treatment device for coke oven waste gas, comprising a purification chamber (1), an air inlet (2), and an air outlet (3), wherein the air inlet (2) is fixedly connected to one side of the purification chamber (1), and the air outlet (3) is fixedly connected to the top of the purification chamber (1), characterized in that: The purification box (1) is equipped with a filter screen (4), a first activated carbon plate (5) and a second activated carbon plate (6) in sequence inside. A cleaning mechanism is provided on the top of the purification box (1). The cleaning mechanism includes an electric push rod (7) fixedly installed on the top of the purification box (1). The output end of the electric push rod (7) extends into the interior of the purification box (1) and is fixedly connected to a cleaning block (8). A brush (9) is fixedly connected to one side of the cleaning block (8). One side of the brush (9) contacts one side of the filter screen (4). A collection box (10) for collecting dust is provided at the bottom of the brush (9). The air collection mechanism is fixedly installed on the cleaning block (8). When the cleaning mechanism cleans the filter screen (4), the air collection mechanism will spray airflow to prevent dust particles from adhering to the brush (9).

2. A multi-stage combined exhaust gas treatment device for coke oven according to claim 1, characterized in that: The gas collection mechanism includes a U-shaped jet box (11) fixedly installed on the surface of the cleaning block (8), and one side of the U-shaped jet box (11) is fixedly connected to two jet pipes (12) through a one-way pressure valve; A gas collection box (13) is fixedly connected to one side of the cleaning block (8). An air inlet pipe (14) is fixedly connected to the top of the gas collection box (13). A transmission pipe (15) is fixedly connected to one side of the gas collection box (13). One end of the transmission pipe (15) is fixedly connected to one side of the U-shaped jet box (11). A push block (16) is slidably connected inside the cleaning block (8). A push rod (17) is fixedly connected to one side of the push block (16). A triangular squeezing block (18) is fixedly connected to one side of the push rod (17). An abutment block (19) that cooperates with the triangular squeezing block (18) is fixedly connected to the inner wall of the purification box (1). A spring (20) is sleeved on the surface of the push rod (17). One end of the spring (20) is fixedly connected to one side of the triangular squeezing block (18). The other end of the spring (20) is fixedly connected to the inner wall of the gas collection box (13).

3. A multi-stage combined exhaust gas treatment device for coke ovens according to claim 2, characterized in that: A first one-way valve is fixedly installed on the surface of the air intake pipe (14), and a second one-way valve is fixedly installed on the surface of the transmission pipe (15).

4. A multi-stage combined exhaust gas treatment device for coke oven according to claim 2, characterized in that: A piston plate (21) is fixedly connected to one side of the push block (16), and the piston plate (21) is made of rubber.

5. A multi-stage combined exhaust gas treatment device for coke oven according to claim 2, characterized in that: The number of the abutment blocks (19) is several, and one side is arc-shaped.

6. A multi-stage combined exhaust gas treatment device for coke oven according to claim 1, characterized in that: A retaining ring (22) is fixedly connected to one side of the collection box (10), and a retaining post (23) is slidably connected to the inner wall of the retaining ring (22). The bottom of the retaining post (23) is fixedly connected to the inner wall of the purification box (1).

7. A multi-stage combined exhaust gas treatment device for coke ovens according to claim 6, characterized in that: The purification box (1) has an inspection port (24) on one side, and a door (25) for sealing the inspection port (24) is hinged to one side of the purification box (1).

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