Tar residue tank water seal device

Abstract

A tar residue box water sealing device comprises a cover plate fixedly arranged at the bottom of a residue outlet pipe, a first upper sealing frame fixedly arranged at the bottom of the cover plate and a first lower sealing frame arranged on the periphery of a residue inlet of a tar residue collecting box, and a first water storage tank used for storing water is formed between the first lower sealing frame and the residue inlet. A water inlet pipe communicated with the interior of the water storage tank is arranged at the bottom of the first lower sealing frame, the water inlet pipe is detachably connected with a first connecting pipe through a first connecting assembly, the first connecting pipe is connected with an external water supply assembly, the water supply assembly is used for injecting water into the first water storage tank, and the bottom end of the first lower sealing frame is inserted into water in the first water storage tank. The water inlet pipe is firmly connected with the first connecting pipe, the situation that the first connecting pipe is separated from the water inlet pipe due to vibration of a pipeline is prevented, water resources are prevented from being wasted due to the fact that water flows out of the first water storage tank, and harmful gas is prevented from escaping.

Description

Technical Field

[0001] This utility model relates to the field of water seal technology, specifically to a water seal device for a tar residue box. Background Technology

[0002] In the coking process, the coal gas is washed with ammonia water to remove tar. Then, the ammonia water containing tar is discharged into a mechanized settling tank. After gravity static settling, the separated tar residue is scraped out by a chain scraper and discharged into a ground tar residue collection tank through the slag discharge port. It is then transferred to the coal preparation and coal blending processes.

[0003] For example, patent document CN217603603U, entitled "A Water Seal Device," includes an upper sealing ring disposed at the slag discharge port of an ammonia clarification tank and a lower sealing ring disposed at the slag inlet of a tar residue collection box. The upper sealing ring is disposed outside the slag discharge port, forming an upper annular groove with the slag discharge port. The lower sealing ring is disposed outside the slag inlet, forming a lower annular groove with the slag inlet, and water is stored in the lower annular groove. After the upper and lower sealing rings are engaged, the slag discharge port is inserted into the slag inlet, the upper sealing ring is inserted into the lower annular groove, and the lower end of the upper sealing ring is inserted into the water in the lower annular groove. First, the slag discharge port is moved down so that it is inserted into the slag inlet, the upper sealing ring is inserted into the lower annular groove, and the lower end of the upper sealing ring is inserted into the water in the lower annular groove. At this time, the tar residue can be discharged into the tar residue collection box.

[0004] However, during the use of the aforementioned literature, when the water pump suddenly starts and stops, the rapid change in water flow velocity will cause the pressure in the inlet pipe to rise instantaneously, forming a pressure wave that propagates in the pipe. This impact force may cause the pipe to vibrate violently, which is particularly noticeable in long-distance water transmission scenarios. At this time, if only the soft rubber connector is inserted into the inlet, its firmness is insufficient. The violent vibration may cause the soft rubber connector to loosen at the inlet or even fall off the inlet, causing water to flow out of the annular groove. This will not only cause harmful gases to escape but also waste water resources. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of the existing technology by proposing a tar residue tank water seal device to solve the technical problem mentioned in the background art, which is that severe vibration of the pipeline may cause the soft rubber connector to loosen at the water inlet or even fall off from the water inlet, resulting in water flowing out of the annular water storage tank.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A water seal device for a tar residue box includes a cover plate fixedly installed at the bottom of a slag outlet pipe, a first upper sealing frame fixedly installed at the bottom of the cover plate, and a first lower sealing frame installed around the slag inlet of the tar residue collection box. A first water storage tank for storing water is formed between the first lower sealing frame and the slag inlet. A water inlet pipe communicating with the inside of the water storage tank is installed at the bottom of the first lower sealing frame. A first connecting pipe is detachably connected to the water inlet pipe through a first connecting component. The first connecting pipe is connected to an external water supply component, which is used to inject water into the first water storage tank. The bottom end of the first lower sealing frame is inserted into the water in the first water storage tank.

[0008] Working principle: When discharging tar residue into the tar residue collection box through the tar residue conveying pipe, hold the first connecting pipe and connect it to the water inlet pipe through the first connecting assembly, then inject water into the first water storage tank. After injecting water to an appropriate height, the tar residue discharge pipe drives the cover plate to move downward, and the cover plate drives the first upper sealing frame to move downward, so that the bottom end of the first upper sealing frame is inserted into the water in the first water storage tank, thereby forming a water seal at the tar residue inlet.

[0009] The beneficial effects of this utility model are as follows: Since the water inlet pipe is detachably connected to the first connecting pipe via the first connecting assembly, and the first connecting pipe is connected to the external water supply assembly, when discharging tar residue into the tar residue collection box through the tar residue conveying pipe, the first connecting pipe is held first to move the second fixing ring closer to the first fixing ring. At the same time, the first fixing ring moves the connecting plate, and the connecting plate moves the insert rod to slide into the corresponding slot. During this process, the end of the insert rod away from the connecting plate slides and engages with the wedge surface of the end of the limiting rod, thereby squeezing the limiting rod to move outward of the fixing block and compressing the spring. When the end of the limiting rod with the wedge surface is aligned with the limiting groove on the insert rod, the end of the limiting rod with the wedge surface is inserted into the corresponding limiting groove under the action of the spring's restoring force. By inserting the limiting rod into the corresponding limiting groove, the movement of the insert rod can be effectively restricted, thereby achieving a firm connection between the water inlet pipe and the first connecting pipe. To prevent the first connecting pipe from detaching from the inlet pipe due to vibration, this not only avoids water flowing out of the first water storage tank and wasting water resources, but also prevents harmful gases from escaping.

[0010] Furthermore, the first connecting assembly includes a connecting plate and a fixing block. The connecting plate is disposed on the outer periphery of the connecting pipe, and a plug rod is fixedly disposed on one side of the connecting plate. The fixing block is fixedly disposed on the outer periphery of the water inlet pipe, and a slot that mates with the plug rod is provided on one side of the fixing block. A limit rod is slidably disposed inside the fixing block, and a limit groove that mates with the limit rod is provided on the plug rod. A baffle is fixedly disposed at one end of the limit rod that extends to the outside of the fixing block, and a spring is fixedly disposed between the baffle and the fixing block.

[0011] Furthermore, the end of the limiting rod is provided with a wedge surface, and the wedge surface at the end of the limiting rod slides in engagement with the insertion rod.

[0012] Furthermore, a first sealing assembly is provided at the connection between one end of the water inlet pipe and the first connecting pipe. The first sealing assembly includes a first fixing ring and a second fixing ring. The first fixing ring is fixedly disposed at one end of the water inlet pipe, and the second fixing ring is fixedly disposed at one end of the first connecting pipe, and the second fixing ring abuts against the first fixing ring. A first protruding edge is fixedly disposed on the inner side of one end of the water inlet pipe, and a sealing ring is fixedly disposed on one side of the first protruding edge. A second protruding edge is fixedly disposed on the inner side of one end of the first connecting pipe, and the second protruding edge abuts against the sealing ring.

[0013] Furthermore, a second lower sealing frame is fixedly provided on the outer periphery of the first lower sealing frame, and a second water storage tank for storing water is formed between the second lower sealing frame and the first lower sealing frame. A through hole is provided on the first lower sealing frame to connect the first water storage tank and the second water storage tank. A second upper sealing frame is fixedly provided on the bottom of the cover plate, and the bottom end of the second upper sealing frame is inserted into the water in the second water storage tank.

[0014] Furthermore, the top of the second lower sealing frame is provided with a water outlet pipe that communicates with the inside of the second water storage tank. The water outlet pipe is detachably connected to a second connecting pipe via a second connecting assembly, and the second connecting pipe is connected to an external water supply assembly.

[0015] Furthermore, a sealing ring is fixedly provided at the bottom of the cover plate, and the sealing ring abuts against the top of the second lower sealing frame.

[0016] Furthermore, valves are installed on both the inlet and outlet pipes. Attached Figure Description

[0017] Figure 1 This is a front view of the present invention;

[0018] Figure 2 This is a perspective view of the present invention with the flexible tube concealed.

[0019] Figure 3 This utility model Figure 2 The cross-sectional view of the slag discharge pipe is omitted;

[0020] Figure 4 This is a perspective view of the tar residue collection box of this utility model;

[0021] Figure 5 This is a perspective view of the first connecting component of this utility model;

[0022] Figure 6 This utility model Figure 5 A 3D view of one of the fixed blocks is hidden;

[0023] Figure 7 This utility model Figure 6 Enlarged view of point A;

[0024] Figure 8 This utility model Figure 5 A sectional view.

[0025] Explanation of reference numerals in the attached drawings: 1. Slag discharge pipe; 2. Cover plate; 3. Tar slag collection box; 4. First lower sealing frame; 5. Second lower sealing frame; 6. Water inlet pipe; 7. First connecting pipe; 8. First flexible hose; 9. Water outlet pipe; 10. Second connecting pipe; 11. Second flexible hose; 12. Valve; 13. Slag inlet; 14. Mounting hole; 15. First upper sealing frame; 16. First water storage tank; 17. Through hole; 18. Second upper sealing frame; 19. Second water storage tank; 20. Sealing ring; 21. Overflow outlet; 22. First fixing ring; 23. Second fixing ring; 24. Connecting plate; 25. Fixing block; 26. Insert rod; 27. Limiting groove; 28. Limiting rod; 29. ​​Spring; 30. Baffle; 31. First protruding edge; 32. Sealing ring; 33. Second protruding edge. Detailed Implementation

[0026] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0027] like Figures 1-5 As shown, a water seal device for a tar residue collection box includes a cover plate 2 fixedly installed at the bottom of a slag discharge pipe 1. A mounting hole 14 is provided at the center of the cover plate 2, and the mounting hole 14 is fixedly fitted onto the bottom end of the slag discharge pipe 1. A first upper sealing frame 15 is fixedly installed at the bottom of the cover plate 2. It also includes a first lower sealing frame 4 surrounding the slag inlet 13 of the tar residue collection box 3. The bottom end of the first lower sealing frame 4 is fixedly connected to the top of the tar residue collection box 3, and a first water storage tank 16 for storing water is formed between the first lower sealing frame 4 and the slag inlet 13. A water inlet is provided at the bottom of the first lower sealing frame 4, and a water inlet pipe 6 communicating with the interior of the first water storage tank 16 is fixedly installed at the water inlet. The water inlet pipe 6 is detachably connected to a first connecting pipe 7 via a first connecting assembly. When the tar residue collection box 3 is transferred, it is convenient to detach the first connecting pipe 7 from the water inlet pipe 6 via the first connecting assembly.

[0028] like Figures 1-4As shown, the end of the first connecting pipe 7 furthest from the inlet pipe 6 is fixedly connected to a first flexible hose 8. The first flexible hose 8 is connected to an external water supply assembly (not shown in the figure). The water supply assembly includes a water tank and a water pump. The water pump is fixedly installed at the bottom of the water tank, and the inlet end of the water pump is connected to the inside of the water tank. The outlet end of the water pump is connected to one end of the first flexible hose 8. The slag discharge pipe 1 has a telescopic function; specifically, the slag discharge pipe 1 is a corrugated pipe. When discharging tar residue into tar residue collection box 3 through tar residue discharge pipe 1, water is first injected into the first water storage tank 16, and the water pump is started. The water pump sequentially injects water into the first water storage tank 16 through the first hose 8, the first connecting pipe 7, and the water inlet pipe 6. After injecting water to an appropriate height into the first water storage tank 16, the tar residue discharge pipe 1 moves the cover plate 2 downward. The cover plate 2 moves the first upper sealing frame 15 downward, so that the bottom end of the first upper sealing frame 15 is inserted into the water in the first water storage tank 16, thereby sealing the tar residue inlet 13 with water and preventing a large amount of volatile organic compounds from escaping during the discharge of tar residue.

[0029] like Figure 3 and Figure 4 As shown, a second lower sealing frame 5 is provided around the outer periphery of the first lower sealing frame 4. Each side of the second lower sealing frame 5 has an "L"-shaped cross-section. The bottom of the second lower sealing frame 5 is fixedly connected to the first lower sealing frame 4, and a second water storage tank 19 is formed between the second lower sealing frame 5 and the first lower sealing frame 4 for water storage. A through hole 17 is provided on the first lower sealing frame 4, connecting the first water storage tank 16 and the second water storage tank 19. The through hole 17 is flush with the bottom surface inside the second lower sealing frame 5, facilitating the entry of water from the first water storage tank 16 into the second water storage tank 19 through the through hole 17. A second upper sealing frame 18 is fixedly installed at the bottom of the cover plate 2, surrounding the outer periphery of the first upper sealing frame 15. When the bottom end of the first upper sealing frame 15 is inserted into the water in the first water storage tank 16, the bottom end of the second upper sealing frame 18 is simultaneously inserted into the water in the second water storage tank 19, thereby further improving the sealing performance at the slag inlet 13.

[0030] like Figures 1 to 5As shown, the top of the second lower sealing frame 5 has an overflow outlet 21, the height of which is lower than the top surface of the slag inlet 13. When too much water is added to the first water storage tank 16 and the second water storage tank 19, the water flows out through the overflow outlet 21, preventing the water level from exceeding the top of the slag inlet 13 and flowing into the tar residue collection box 3. A water outlet pipe 9, communicating with the interior of the second water storage tank 19, is fixedly installed at the overflow outlet 21. The water outlet pipe 9 is detachably connected to a second connecting pipe 10 via a second connecting assembly, the second connecting assembly having the same structure as the first connecting assembly. Both the first connecting pipe 7 and the second connecting pipe 10 are made of stainless steel. A second flexible hose 11 is fixedly connected to the end of the second connecting pipe 10 furthest from the water outlet pipe 9, and the other end of the second flexible hose 11 is connected to an external collection box (not shown in the figure). A sealing ring 20, made of rubber, is fixedly installed at the edge of the bottom surface of the cover plate 2. The sealing ring 20 is adapted to the top of the second lower sealing frame 5, and the sealing ring 20 abuts against the top of the second lower sealing frame 5. When the bottom end of the second upper sealing frame 18 is inserted into the water in the second water storage tank 19, the sealing ring 20 simultaneously abuts against the top end of the second lower sealing frame 5, thereby further increasing the sealing performance of the device and preventing the escape of volatile organic compounds. Meanwhile, in order to allow the water in the first water storage tank 16 and the second water storage tank 19 to absorb some of the volatile organic compounds dissolved in water, after the sealing ring 20 abuts against the top of the second lower sealing frame 5, the cover plate 2 and the top end face of the slag inlet 13 are kept apart, and a channel for gas passage is formed between the top end face of the slag inlet 13, the cover plate 2, the first upper sealing frame 15, the first lower sealing frame 4, the second upper sealing frame 18 and the second lower sealing frame 5. This facilitates the absorption of volatile organic compounds by the water in the second water storage tank 19 when the water in the first water storage tank 16 can no longer absorb the volatile organic compounds. Furthermore, when the water in both the first water storage tank 16 and the second water storage tank 19 can no longer absorb the volatile organic compounds, the sealing fit between the sealing ring 20 and the top of the second lower sealing frame 5 can further prevent the volatile organic compounds from escaping.

[0031] Valves 12 are installed on both the inlet pipe 6 and the outlet pipe 9. Before disassembling the first connecting pipe 7 and the second connecting pipe 10, the valves 12 can be closed to prevent water from flowing out of the first water storage tank 16 and the second water storage tank 19.

[0032] When it is necessary to replace the water in the first water storage tank 16 and the second water storage tank 19, open the valves 12 on the inlet pipe 6 and the outlet pipe 9 respectively, start the water pump to inject water into the first water storage tank 16, and the water in the first water storage tank 16 flows into the second water storage tank 19 through the through hole 17. After the water volume in the second water storage tank 19 increases, the excess water flows sequentially through the overflow port 21, the outlet pipe 9, the second connecting pipe 10 and the second flexible hose 11 into the collection tank, which facilitates the subsequent unified treatment of sewage. When it is necessary to empty the water in the first water storage tank 16 and the second water storage tank 19, the second connecting pipe 10 is connected to the inlet pipe 6 through the second connecting component, and the valve 12 on the inlet pipe 6 is opened. The water in the second water storage tank 19 and the first water storage tank 16 flows sequentially through the inlet pipe 6, the first connecting pipe 7 and the first flexible hose 8 into the collection tank.

[0033] like Figure 5 and Figure 8 As shown, a first sealing assembly is installed at the connection between one end of the water inlet pipe 6 and the first connecting pipe 7, and a second sealing assembly is installed at the connection between one end of the water outlet pipe 9 and the second connecting pipe 10. The second sealing assembly has the same structure as the first sealing assembly. The first sealing assembly includes a first fixing ring 22 and a second fixing ring 23. The first fixing ring 22 is fixedly sleeved on one end of the water inlet pipe 6, and the second fixing ring 23 is fixedly sleeved on one end of the first connecting pipe 7, and the second fixing ring 23 abuts against the first fixing ring 22. A first protruding edge 31 is integrally formed along the circumference of the inner side of one end of the water inlet pipe 6, and a sealing ring 32 is fixedly installed on one side of the first protruding edge 31. The sealing ring 32 is made of rubber. A second protruding edge 33 is integrally formed along the circumference of the inner side of one end of the first connecting pipe 7, and the second protruding edge 33 abuts against the sealing ring 32. The thickness of the sealing ring 32 is slightly greater than the combined thickness of the first fixing ring 22 and the second fixing ring 23.

[0034] like Figures 5 to 7As shown, the first connecting assembly includes two connecting plates 24 and two fixing blocks 25. The two connecting plates 24 are symmetrically fixedly installed on the outer periphery of the second fixing ring 23, and a plug rod 26 is fixedly installed on one side of each connecting plate 24. The two fixing blocks 25 are fixedly installed on the outer periphery of the water inlet pipe 6, and each fixing block 25 corresponds to one of the two connecting plates 24. A slot is provided on one side of each fixing block 25 to cooperate with the plug rod 26, and the plug rod 26 can be slidably inserted into the corresponding slot. A sliding groove is provided in the fixing block 25, and a limiting rod 28 is slidably installed in the sliding groove. A limiting groove 27 is provided on one side of the plug rod 26 to cooperate with the limiting rod 28. The end of the limiting rod 28 can be inserted into the limiting groove 27, and the end of the limiting rod 28 is provided with a wedge surface, which slidably cooperates with the plug rod 26. A connecting post is fixedly installed at one end of the limiting rod 28 that extends to the outside of the fixing block 25. A baffle 30 is fixedly installed at one end of the connecting post. A spring 29 is fixedly installed between the baffle 30 and the fixing block 25. The spring 29 is sleeved on the outer periphery of the connecting post. One end of the spring 29 is fixedly connected to the baffle 30, and the other end of the spring 29 is fixedly connected to the corresponding fixing block 25.

[0035] Working principle:

[0036] In use, holding the first connecting pipe 7 moves the second fixing ring 23 closer to the first fixing ring 22. At the same time, the first fixing ring 22 moves the connecting plate 24, and the connecting plate 24 moves the insertion rod 26 to slide into the corresponding slot. During this process, the end of the insertion rod 26 away from the connecting plate 24 slides and engages with the wedge surface of the end of the limiting rod 28, thereby squeezing the limiting rod 28 to move outward of the fixing block 25 and compressing the spring 29. When the end of the limiting rod 28 with the wedge surface is aligned with the limiting groove 27 on the insertion rod 26, the end of the limiting rod 28 with the wedge surface is inserted into the corresponding limiting groove 27 under the action of the spring 29's restoring force. At this time, the first fixing ring 22 and the second fixing ring 23 just abut against each other. At the same time, the first protrusion 31 moves the sealing ring 32 to abut against the second protrusion 33, and causes the sealing ring 32 to deform slightly, increasing the sealing performance at the connection between the water inlet pipe 6 and the first connecting pipe 7. By inserting the limiting rod 28 into the corresponding limiting groove 27, the movement of the insertion rod 26 can be effectively restricted, thereby firmly connecting the water inlet pipe 6 and the first connecting pipe 7.

[0037] Open valve 12 on inlet pipe 6 to start the water pump. The water pump sequentially injects water into the first water storage tank 16 through the first flexible hose 8, the first connecting pipe 7, and the inlet pipe 6. The water in the first water storage tank 16 flows into the second water storage tank 19 through the through hole 17. After injecting water to an appropriate height into the first and second water storage tanks 16 and 19, turn off the water pump. Then, move the slag discharge pipe 1 downwards, causing the cover plate 2 to move downwards. The cover plate 2 simultaneously moves the first upper sealing frame 15, the second upper sealing frame 18, and the sealing ring 20 downwards. When the sealing ring 20 abuts against the top of the second lower sealing frame 5, the bottom end of the first upper sealing frame 15 is inserted into the water in the first water storage tank 16, and the bottom end of the second upper sealing frame 18 is inserted into the water in the second water storage tank 19, thus creating a water seal at the slag inlet 13. At this point, the tar slag can be discharged into the tar slag collection box 3 through the slag discharge pipe 1.

[0038] When the tar residue collection box 3 needs to be transferred, pull the baffle 30 away from the fixed block 25. The baffle 30 drives the limiting rod 28 to move outward through the connecting column. When the end of the limiting rod 28 with the inclined wedge surface disengages from the corresponding limiting groove 27, pull the first connecting pipe 7 away from the water inlet pipe 6. This causes the first connecting pipe 7 to drive the first fixing ring 22 to move. The first fixing ring 22 drives the insertion rod 26 to disengage from the corresponding slot through the connecting plate 24. This removes the first connecting pipe 7 from the water inlet pipe 6. Then, use a forklift to transport the tar residue collection box 3 to the raw coal site for subsequent operations such as coal blending.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A water seal device for a tar residue box, comprising a cover plate (2) fixedly disposed at the bottom of a slag outlet pipe (1), wherein a first upper sealing frame (15) is fixedly disposed at the bottom of the cover plate (2), and further comprising a first lower sealing frame (4) disposed on the outer periphery of the slag inlet (13) of a tar residue collection box (3), characterized in that, A first water storage tank (16) for storing water is formed between the first lower sealing frame (4) and the slag inlet (13). A water inlet pipe (6) communicating with the inside of the water storage tank is provided at the bottom of the first lower sealing frame (4). The water inlet pipe (6) is detachably connected to a first connecting pipe (7) through a first connecting component. The first connecting pipe (7) is connected to an external water supply component. The water supply component is used to inject water into the first water storage tank (16). The bottom end of the first lower sealing frame (4) is inserted into the water in the first water storage tank (16).

2. The tar residue box water seal device according to claim 1, characterized in that, The first connecting assembly includes a connecting plate (24) and a fixing block (25). The connecting plate (24) is disposed on the outer periphery of the connecting pipe. A plug rod (26) is fixedly disposed on one side of the connecting plate (24). The fixing block (25) is fixedly disposed on the outer periphery of the water inlet pipe (6). A slot that cooperates with the plug rod (26) is opened on one side of the fixing block (25). A limit rod (28) is slidably disposed inside the fixing block (25). A limit groove (27) that cooperates with the limit rod (28) is opened on the plug rod (26). A baffle (30) is fixedly disposed at one end of the limit rod (28) extending to the outside of the fixing block (25). A spring (29) is fixedly disposed between the baffle (30) and the fixing block (25).

3. The tar residue box water seal device according to claim 2, characterized in that, The end of the limiting rod (28) is provided with a wedge surface, and the wedge surface at the end of the limiting rod (28) slides in conjunction with the insert rod (26).

4. The tar residue box water seal device according to claim 2, characterized in that, A first sealing assembly is provided at the connection between one end of the water inlet pipe (6) and the first connecting pipe (7). The first sealing assembly includes a first fixing ring (22) and a second fixing ring (23). The first fixing ring (22) is fixedly disposed at one end of the water inlet pipe (6), and the second fixing ring (23) is fixedly disposed at one end of the first connecting pipe (7). The second fixing ring (23) abuts against the first fixing ring (22). A first protruding edge (31) is fixedly disposed on the inner side of one end of the water inlet pipe (6). A sealing ring (32) is fixedly disposed on one side of the first protruding edge (31). A second protruding edge (33) is fixedly disposed on the inner side of one end of the first connecting pipe (7). The second protruding edge (33) abuts against the sealing ring (32).

5. The tar residue box water seal device according to claim 1, characterized in that, A second lower sealing frame (5) is fixedly provided on the outer periphery of the first lower sealing frame (4). A second water storage tank (19) for storing water is formed between the second lower sealing frame (5) and the first lower sealing frame (4). A through hole (17) is provided on the first lower sealing frame (4) to connect the first water storage tank (16) and the second water storage tank (19). A second upper sealing frame (18) is fixedly provided at the bottom of the cover plate (2). The bottom end of the second upper sealing frame (18) is inserted into the water in the second water storage tank (19).

6. The tar residue box water seal device according to claim 5, characterized in that, The top of the second lower sealing frame (5) is provided with a water outlet pipe (9) that communicates with the inside of the second water storage tank (19). The water outlet pipe (9) is detachably connected to a second connecting pipe (10) through a second connecting component. The second connecting pipe (10) is connected to an external water supply component.

7. The tar residue box water seal device according to claim 5, characterized in that, A sealing ring (20) is fixedly provided at the bottom of the cover plate (2), and the sealing ring (20) abuts against the top of the second lower sealing frame (5).

8. The tar residue box water seal device according to claim 5, characterized in that, Valves (12) are installed on both the inlet pipe (6) and the outlet pipe (9).

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