Waste gas treatment equipment for solid waste incineration and recovery

Abstract

The utility model relates to the technical field of waste gas treatment, and provides waste gas treatment equipment for solid waste incineration and recovery, which comprises a treatment cylinder, a gas inlet pipe, a filter screen, a treatment screen plate, a mounting component, a cleaning scraping rod, a cleaning sponge, a cleaning component, a splitter plate, a spray header and an exhaust pipe, the filter screen is detachably connected to one side of the air inlet pipe, the treatment screen plate is detachably arranged on one side of the filter screen, the mounting assembly is arranged between the filter screen and the treatment screen plate, the multiple cleaning scraping rods are rotationally arranged between the filter screen and the treatment screen plate and arranged in a staggered mode, and the cleaning sponge is fixedly connected to each cleaning scraping rod. The cleaning assembly is arranged between the multiple cleaning scraping rods, and the multiple splitter plate arrays are arranged on one side of the processing net plate in a staggered mode. By means of the technical scheme, the problem that in the prior art, impurities on the filter screen are inconvenient to clean in time is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to waste gas treatment equipment used for solid waste incineration and recovery. Background Art

[0002] Solid garbage, also known as solid waste, refers to solid, semi-solid, and gaseous items and materials in containers that have lost their original value or have not lost their value but have been discarded or abandoned during production, life, and other activities, as well as items and materials that are included in the solid waste management system as stipulated by laws and administrative regulations;

[0003] Incineration is a thermochemical treatment process in which solid waste undergoes combustion reaction at high temperature (usually around 800-1100°C) and in the presence of oxygen to remove organic components from the waste. Nitrate contained in the waste gas generated during incineration can harm the atmosphere, so it is usually necessary to denitrify the waste gas when it is discharged. For example, the utility model disclosed in patent announcement number CN217449624U discloses a denitrification treatment device for waste gas generated by solid waste incineration. By adopting a sliding filter screen, the filter screen can be used to intercept most impurities in the waste gas during use, allowing the waste gas to enter the denitrification tower. When there are relatively few impurities, at the same time, when the filtering effect is poor or the speed of exhaust gas passing through is reduced, the exhaust can be stopped first, and the side closed door is opened to pull the stretching column upward, so that the plug-in column is pulled out from the inside of the plug-in slot, and the filter is pulled out from the inside of the inner sliding slot for replacement and cleaning. Although it is convenient for filtering impurities in the exhaust gas generated during the incineration of solid waste, the filter needs to be manually disassembled and cleaned during filtration. If manual cleaning is not timely, more impurities will adhere to and accumulate on the filter, which will affect the filter efficiency of the filter for solid waste incineration exhaust gas, and thus affect the final treatment effect of the exhaust gas. Utility Model Content

[0004] The utility model provides an exhaust gas treatment device for solid waste incineration and recovery, which solves the problem in the related art that it is inconvenient to clean impurities on the filter net in a timely manner.

[0005] The technical solution of the utility model is as follows: an exhaust gas treatment device for solid waste incineration and recovery, comprising a treatment cylinder, an air inlet pipe, a filter screen, a treatment screen plate, a mounting assembly, a cleaning scraper rod, a cleaning sponge, a cleaning assembly, a diverter plate, a spray head and an exhaust pipe;

[0006] The air inlet pipe is connected to one side of the treatment cylinder;

[0007] The filter is detachably connected to one side of the air inlet pipe;

[0008] The processing screen plate is detachably arranged on one side of the filter screen;

[0009] The mounting assembly is arranged between the filter screen and the processing screen plate;

[0010] The cleaning scraper rods are provided in plurality, and the plurality of cleaning scraper rods are all rotatably provided between the filter screen and the processing screen plate, and the plurality of cleaning scraper rods are staggered;

[0011] The cleaning sponge is fixedly connected to each of the cleaning scraping rods;

[0012] The cleaning assembly is arranged between the plurality of cleaning scraping rods;

[0013] The diverter plates are provided in plurality, and the plurality of diverter plates are arranged in an array staggered on one side of the processing mesh plate;

[0014] The spray heads are provided in plurality, and the plurality of spray heads are all located in the treatment cylinder, and a spray assembly is provided between the plurality of spray heads;

[0015] The exhaust pipe is located at one side of the plurality of spray heads, and the exhaust pipe is connected to the processing cylinder.

[0016] Furthermore, the cleaning component includes:

[0017] a sealing plate movably disposed on the treatment cylinder;

[0018] a movable seat, the movable seat being arranged between the sealing plate and the processing cylinder;

[0019] a mounting frame fixedly connected to the bottom end of the sealing plate;

[0020] a motor, the motor being mounted on the mounting frame;

[0021] a rotating rod, the rotating rod being fixedly connected to the output end of the motor and being rotatably connected to the sealing plate;

[0022] Rotating columns, wherein two rotating columns are provided, the two rotating columns are rotatably connected between the mounting frame and the sealing plate, and the plurality of cleaning scraping rods are respectively fixedly connected to the two rotating columns;

[0023] A main gear, the main gear being fixedly connected to the rotating rod;

[0024] The driven wheels are provided in two numbers, the two driven wheels are respectively fixedly connected to the two rotating columns, and the main gear is meshed with the driven wheels.

[0025] Furthermore, the installation component includes:

[0026] Mounting pads, wherein two mounting pads are provided, and the two mounting pads are fixedly connected to the filter screen and the processing screen respectively;

[0027] A mounting rod, wherein the mounting rod is provided in plurality, and the plurality of mounting rods are connected through the filter screen plate and the processing screen plate;

[0028] Mounting columns, wherein two mounting columns are provided, and the two mounting columns are respectively fixedly connected between the plurality of mounting rods;

[0029] A pull rod is fixedly connected to one side of each of the mounting posts.

[0030] Furthermore, the spray assembly includes:

[0031] A supporting tube, wherein the supporting tube is provided in plurality, and the plurality of supporting tubes are all connected to the processing cylinder through the supporting tube;

[0032] A spray pipe, wherein the spray pipe is provided in plurality, and the plurality of spray pipes are connected between the plurality of support pipes and the plurality of spray heads;

[0033] Connecting pipes, wherein two connecting pipes are provided, and the two connecting pipes are connected between the plurality of supporting pipes;

[0034] A liquid inlet pipe is connected between the two connecting pipes, and a liquid inlet valve is provided on the liquid inlet pipe.

[0035] Furthermore, the mobile seat includes:

[0036] A support plate, wherein two support plates are provided, and both support plates are installed on the outer side wall of the treatment cylinder;

[0037] An electric push rod, wherein two electric push rods are provided and the two electric push rods are respectively installed on the top ends of the two support plates;

[0038] A movable frame is fixedly connected between the output end of each electric push rod and the sealing plate.

[0039] Furthermore, a cleaning port is provided on one side of the treatment cylinder, a sealing cover is detachably connected to the cleaning port, a plurality of mounting screws are threadedly connected between the sealing cover and the treatment cylinder, and a pull ring is fixedly connected to one side of the sealing cover.

[0040] Furthermore, the treatment cylinder is provided with a sealing opening matched with the sealing plate, and a sealing gasket is fixedly connected to the sealing opening.

[0041] The working principle and beneficial effects of the utility model are as follows:

[0042] 1. In the present invention, the exhaust gas generated by solid waste incineration is facilitated to enter the treatment cylinder through the air inlet pipe. The cooperation of the filter screen and the treatment mesh plate facilitates multiple filtration of impurities in the exhaust gas. At the same time, through multiple diverter plates, the exhaust gas is facilitated to meander forward in the treatment cylinder, so as to slow down the flow speed of the exhaust gas in the treatment cylinder, thereby facilitating the full treatment of the exhaust gas generated by solid waste incineration.

[0043] 2. In the present invention, the cooperation of the spray assembly and the multiple spray heads facilitates the treatment of the waste gas generated by the incineration of solid waste, so as to reduce the impact of harmful substances in the waste gas on the environment;

[0044] 3. In the present invention, the cleaning assembly facilitates the simultaneous rotation of multiple cleaning scrapers, thereby facilitating the simultaneous rotation of multiple cleaning sponges. The rotational coordination of multiple cleaning scrapers and multiple cleaning sponges facilitates the scraping and cleaning of exhaust gas impurities on the filter screen and the processing screen, thereby facilitating timely cleaning of the filter screen and the processing screen;

[0045] 4. In the present invention, the installation assembly facilitates the installation and removal of the filter screen and the processing screen plate in the processing cylinder, so as to facilitate the replacement and cleaning of the filter screen and the processing screen plate, thereby facilitating the improvement of the processing effect of the filter screen and the processing screen plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0047] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0048] Figure 2 This is a schematic diagram of the structure of the utility model in cross section;

[0049] Figure 3 This is a schematic diagram of the structure of the filter screen, cleaning scraper and rotating column of the utility model;

[0050] Figure 4 This is a schematic diagram of the structure of the sprinkler head, support pipe and connecting pipe of the utility model;

[0051] Figure 5 It is a cross-sectional structural diagram of the processing cylinder and the diverter plate of the utility model.

[0052] In the figure: 1. Treatment cylinder; 2. Air inlet pipe; 3. Filter; 4. Treatment screen; 5. Cleaning scraper; 6. Cleaning sponge; 7. Diverter plate; 8. Sprinkler head; 9. Exhaust pipe; 10. Sealing plate; 11. Mounting frame; 12. Motor; 13. Rotating column; 14. Main gear; 15. Driven wheel; 16. Mounting pad; 17. Mounting rod; 18. Mounting column; 19. Pull rod; 20. Support pipe; 21. Spray pipe; 22. Connecting pipe; 23. Liquid inlet pipe; 24. Support plate; 25. Electric push rod; 26. Moving frame; 27. Sealing cover; 28. Mounting screw; 29. ​​Pull ring. DETAILED DESCRIPTION

[0053] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0054] like Figures 1 to 5 As shown, this embodiment proposes a waste gas treatment equipment for solid waste incineration recovery, including a treatment cylinder 1, an air intake pipe 2, a filter 3, a treatment mesh plate 4, a mounting assembly, a cleaning scraper 5, a cleaning sponge 6, a cleaning assembly, a diverter plate 7, a spray head 8 and an exhaust pipe 9. The air intake pipe 2 is connected to one side of the treatment cylinder 1, the filter 3 is detachably connected to one side of the air intake pipe 2, the treatment mesh plate 4 is detachably arranged on one side of the filter 3, the mesh opening diameter of the treatment mesh plate 4 is smaller than the mesh opening diameter of the filter 3, and the filter 3 and the treatment mesh plate 4 are used to facilitate multiple filtration of impurities in the solid waste incineration waste gas. The mounting assembly is arranged between the filter 3 and the treatment mesh plate 4, the cleaning scraper 5 is provided in plurality, and the plurality of cleaning scraper rods 5 are all rotatably arranged between the filter 3 and the treatment mesh plate 4, and the plurality of cleaning scraper rods 5 are staggered. The cleaning sponge 6 It is fixedly connected to each cleaning scraper 5, and the cleaning assembly is arranged between multiple cleaning scrapers 5. There are multiple diverter plates 7, and multiple diverter plates 7 are arranged in an array and staggered on one side of the processing mesh plate 4 to facilitate the exhaust gas to flow in a winding manner in the processing tube 1, so as to slow down the flow speed of the exhaust gas in the processing tube 1, so that the exhaust gas can be fully processed. There are multiple spray heads 8, and multiple spray heads 8 are all located in the processing tube 1, and a spray assembly is arranged between the multiple spray heads 8, which can perform all-round spray treatment on the solid waste incineration exhaust gas. The exhaust pipe 9 is located on one side of the multiple spray heads 8, and the exhaust pipe 9 is connected to the processing tube 1. The air intake valve and the exhaust valve are respectively provided on the air intake pipe 2 and the exhaust pipe 9. When the air intake valve and the exhaust valve are opened, the solid waste incineration exhaust gas can pass through the air intake pipe 2 and the exhaust pipe 9 to enter and exit the processing tube 1.

[0055] refer to Figure 2 as well as Figure 3 The cleaning assembly includes a sealing plate 10, a movable seat, a mounting bracket 11, a motor 12, a rotating rod, a rotating column 13, a main gear 14 and a driven wheel 15. The sealing plate 10 is movably arranged on the processing cylinder 1. The processing cylinder 1 is provided with a sealing port that matches the sealing plate 10, and a sealing gasket is fixedly connected to the sealing port to facilitate the sealing installation of the sealing cover 27 on the processing cylinder 1. The movable seat is arranged between the sealing plate 10 and the processing cylinder 1, the mounting bracket 11 is fixedly connected to the bottom end of the sealing plate 10, and the motor 12 is installed at On the mounting frame 11, the rotating rod is fixedly connected to the output end of the motor 12, and the rotating rod is rotatably connected to the sealing plate 10. Two rotating columns 13 are provided. The two rotating columns 13 pass through and are rotatably connected between the mounting frame 11 and the sealing plate 10, and the multiple cleaning scraper rods 5 are respectively fixedly connected to the two rotating columns 13. The main gear 14 is fixedly connected to the rotating rod. Two driven wheels 15 are provided. The two driven wheels 15 are respectively fixedly connected to the two rotating columns 13, and the main gear 14 is meshed with the driven wheels 15.

[0056] The motor 12 is started, so that the motor 12 drives the rotating rod to rotate, and the rotating rod drives the two rotating columns 13 to rotate simultaneously through the engagement of the main gear 14 and the driven wheel 15, so that the two rotating columns 13 drive multiple cleaning scrapers 5 and multiple cleaning sponges 6 to rotate simultaneously. When the multiple cleaning scrapers 5 and multiple cleaning sponges 6 are in slight contact with the surface of the filter 3 and the processing mesh plate 4, the impurities on the surface of the filter 3 and the processing mesh plate 4 can be scraped and cleaned. At the same time, through the rotation and contact of the cleaning scraper 5 and the cleaning sponge 6, the filter 3 and the processing mesh plate 4 will produce slight vibrations (at the same time, the mounting pad 16 will expand and contract to a certain extent), and the exhaust gas impurities on the surface of the filter 3 and the processing mesh plate 4 can also be shaken off and cleaned, so that the exhaust gas impurities on the surface of the filter 3 and the processing mesh plate 4 can be cleaned regularly, so as to reduce the influence of impurities on the exhaust gas filtering effect of the filter 3 and the processing mesh plate 4.

[0057] refer to Figure 1 as well as Figure 3 , the mounting assembly includes a mounting pad 16, a mounting rod 17, a mounting column 18 and a pull rod 19, the mounting pad 16 is provided in two, the two mounting pads 16 are respectively fixedly connected to the filter screen 3 and the processing screen plate 4, which can reduce the wear of the filter screen 3 and the processing screen plate 4 when moving in the processing cylinder 1, the mounting rod 17 is provided in multiple, and the multiple mounting rods 17 are all connected between the filter screen 3 and the processing screen plate 4, the mounting column 18 is provided in two, the two mounting columns 18 are respectively fixedly connected between the multiple mounting rods 17, and the pull rod 19 is fixedly connected to one side of each mounting column 18;

[0058] By pulling the two mounting posts 18 through two pull rods 19, the two mounting posts 18 can drive the filter screen 3 and the processing screen plate 4 to move through multiple mounting rods 17, so as to facilitate the movement of the filter screen 3 and the processing screen plate 4 into and out of the processing cylinder 1, thereby facilitating the installation and disassembly of the filter screen 3 and the processing screen plate 4.

[0059] refer to Figure 4 The spray assembly includes a support tube 20, a spray tube 21, a connecting tube 22 and a liquid inlet tube 23. The support tube 20 is provided in plurality, and the plurality of support tubes 20 are all connected to the treatment cylinder 1. The spray tube 21 is provided in plurality, and the plurality of spray tubes 21 are connected between the plurality of support tubes 20 and the plurality of spray heads 8. The connecting tube 22 is provided in two pieces, and the two connecting tubes 22 are connected between the plurality of support tubes 20. The liquid inlet tube 23 is connected between the two connecting tubes 22, and a liquid inlet valve is provided on the liquid inlet tube 23.

[0060] By opening the liquid inlet valve, the treated liquid can enter the two connecting pipes 22 through the liquid inlet pipe 23, so that the treated liquid can enter the multiple spray heads 8 through multiple support pipes 20 and multiple spray pipes 21, so that the solid waste incineration exhaust gas can be sprayed through the multiple spray heads 8.

[0061] refer to Figure 1 The movable seat includes a support plate 24, an electric push rod 25 and a movable frame 26. Two support plates 24 are provided. Both support plates 24 are mounted on the outer wall of the treatment cylinder 1. Two electric push rods 25 are provided. The two electric push rods 25 are respectively mounted on the top ends of the two support plates 24. The movable frame 26 is fixedly connected between the output end of each electric push rod 25 and the sealing plate 10.

[0062] The two electric push rods 25 are started at the same time, so that the two electric push rods 25 push the two movable frames 26, so that the two movable frames 26 can drive the sealing plate 10 to move, so that the sealing plate 10 can drive the mounting frame 11, the motor 12, the rotating rod, the rotating column 13, the cleaning scraper 5 and the cleaning sponge 6 to move, so as to move the cleaning scraper 5 and the cleaning sponge 6 out of the processing tube 1, thereby facilitating the cleaning and replacement of the cleaning scraper 5 and the cleaning sponge 6. At the same time, when the cleaning scraper 5 and the cleaning sponge 6 are moved to the appropriate position, they will not affect the movement of the filter screen 3 and the processing screen plate 4 in the processing tube 1, thereby preventing the cleaning scraper 5 and the cleaning sponge 6 from affecting the installation and replacement of the filter screen 3 and the processing screen plate 4.

[0063] refer to Figure 2The side of the processing cylinder 1 is provided with a cleaning port, and a sealing cover 27 is detachably connected to the cleaning port, a plurality of mounting screws 28 are threadedly connected between the sealing cover 27 and the processing cylinder 1, one side of the sealing cover 27 is fixedly connected with a pull ring 29, a groove matched with the side wall of the processing cylinder 1 is formed in the sealing cover 27, and a sealing ring is fixedly connected in the groove, so that the sealing cover 27 can be sealingly mounted on the processing cylinder 1;

[0064] The sealing cover 27 can be moved by the pull ring 29, and the sealing cover 27 can be stably mounted on the processing cylinder 1 by the plurality of mounting screws 28, so as to seal the processing cylinder 1, and the sealing cover 27 can be dismounted from the processing cylinder 1, so that the filter screen 3 and the processing screen plate 4 can be dismounted and replaced.

[0065] In the embodiment, when the solid waste incineration waste gas enters the processing cylinder 1 through the inlet pipe 2, the filter screen 3 and the processing screen plate 4 can filter the impurities in the waste gas for multiple times, the filtered waste gas can flow between the plurality of staggered distribution plates 7, when the waste gas flows to one side of the plurality of spray heads 8, the treatment liquid enters the two connecting pipes 22 through the liquid inlet pipe 23, and then the treatment liquid enters the plurality of spray heads 8 through the plurality of support pipes 20 and the plurality of spray pipes 21, so that the plurality of spray heads 8 can spray the solid waste incineration waste gas in all directions, and then the exhaust valve is opened, so that the treated waste gas is discharged through the exhaust pipe 9 for subsequent treatment.

[0066] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A waste gas treatment device for solid waste incineration recovery, characterized in that: include: Treatment barrel (1); An air inlet pipe (2), the air inlet pipe (2) being connected to one side of the treatment cylinder (1); A filter screen (3), the filter screen (3) being detachably connected to one side of the air inlet pipe (2); a processing screen plate (4), wherein the processing screen plate (4) is detachably arranged on one side of the filter screen (3); An installation component, the installation component being arranged between the filter screen (3) and the processing screen plate (4); A cleaning scraper (5), wherein the cleaning scraper (5) is provided in plurality, and the plurality of cleaning scrapers (5) are all rotatably provided between the filter screen (3) and the processing screen plate (4), and the plurality of cleaning scrapers (5) are staggered; A cleaning sponge (6), wherein the cleaning sponge (6) is fixedly connected to each of the cleaning scraping rods (5); A cleaning assembly, the cleaning assembly being arranged between the plurality of cleaning scraping rods (5); A diverter plate (7), wherein the diverter plate (7) is provided in plurality, and the plurality of diverter plates (7) are arranged in an array and staggered on one side of the processing mesh plate (4); A spray head (8), wherein the spray head (8) is provided in plurality, the plurality of spray heads (8) are all located in the treatment barrel (1), and a spray assembly is provided between the plurality of spray heads (8); An exhaust pipe (9), the exhaust pipe (9) is located on one side of the plurality of spray heads (8), and the exhaust pipe (9) is connected to the treatment cylinder (1).

2. The waste gas treatment equipment for solid waste incineration recovery according to claim 1, characterized in that: The cleaning component includes: a sealing plate (10), the sealing plate (10) being movably disposed on the treatment cylinder (1); A movable seat, the movable seat being arranged between the sealing plate (10) and the processing cylinder (1); A mounting frame (11), the mounting frame (11) being fixedly connected to the bottom end of the sealing plate (10); A motor (12), the motor (12) being mounted on the mounting frame (11); A rotating rod, the rotating rod being fixedly connected to the output end of the motor (12) and being rotationally connected to the sealing plate (10); A rotating column (13), wherein two rotating columns (13) are provided, and the two rotating columns (13) are rotatably connected between the mounting frame (11) and the sealing plate (10), and the plurality of cleaning scraping rods (5) are respectively fixedly connected to the two rotating columns (13); a main gear (14), the main gear (14) being fixedly connected to the rotating rod; The driven wheels (15) are provided in two numbers. The two driven wheels (15) are respectively fixedly connected to the two rotating columns (13), and the main gear (14) is meshed with the driven wheels (15).

3. The waste gas treatment equipment for solid waste incineration recovery according to claim 2, characterized in that: The installation components include: A mounting pad (16), wherein two mounting pads (16) are provided, and the two mounting pads (16) are fixedly connected to the filter screen (3) and the processing screen plate (4) respectively; A mounting rod (17), wherein the mounting rod (17) is provided in plurality, and the plurality of mounting rods (17) are all connected through the filter screen (3) plate and the processing screen plate (4); A mounting column (18), wherein two mounting columns (18) are provided, and the two mounting columns (18) are respectively fixedly connected between the plurality of mounting rods (17); A pull rod (19) is fixedly connected to one side of each of the mounting posts (18).

4. The waste gas treatment equipment for solid waste incineration recovery according to claim 3, characterized in that: The spray assembly comprises: A support tube (20), wherein the support tube (20) is provided in plurality, and the plurality of support tubes (20) are all connected through the treatment cylinder (1); A spray pipe (21), wherein the spray pipe (21) is provided in plurality, and the plurality of spray pipes (21) are connected between the plurality of support pipes (20) and the plurality of spray heads (8); A connecting pipe (22), wherein two connecting pipes (22) are provided, and the two connecting pipes (22) are connected between the plurality of support pipes (20); A liquid inlet pipe (23) is connected between the two connecting pipes (22), and a liquid inlet valve is provided on the liquid inlet pipe (23).

5. The waste gas treatment equipment for solid waste incineration and recovery according to claim 4, characterized in that: The mobile seat comprises: A support plate (24), wherein two support plates (24) are provided, and both support plates (24) are mounted on the outer side wall of the treatment cylinder (1); An electric push rod (25), wherein two electric push rods (25) are provided, and the two electric push rods (25) are respectively installed on the top ends of the two support plates (24); A movable frame (26) is fixedly connected between the output end of each electric push rod (25) and the sealing plate (10).

6. The waste gas treatment equipment for solid waste incineration recovery according to claim 5, characterized in that: A cleaning port is provided on one side of the treatment cylinder (1), and a sealing cover (27) is detachably connected to the cleaning port. A plurality of mounting screws (28) are threadedly connected between the sealing cover (27) and the treatment cylinder (1), and a pull ring (29) is fixedly connected to one side of the sealing cover (27).

7. The waste gas treatment equipment for solid waste incineration recovery according to claim 6, characterized in that: The treatment cylinder (1) is provided with a sealing opening that matches the sealing plate (10), and a sealing gasket is fixedly connected to the sealing opening.

Images