Dust adsorption device of industrial furnace

Abstract

The invention relates to the technical field of industrial furnaces, and discloses an industrial furnace dust adsorption device which comprises an industrial furnace, a supporting frame, a gas collecting and filtering mechanism and a discharging mechanism, the supporting frame is installed at the upper end of the industrial furnace, and the gas collecting and filtering mechanism is installed in the middle of the supporting frame; the discharging mechanism is installed in the middle of the gas collecting and filtering mechanism, the gas collecting and filtering mechanism comprises a gas collecting unit, a rotating unit and a flow dividing unit, the gas collecting unit is installed at the upper end of the industrial furnace, the rotating unit is installed in the middle of the gas collecting unit, and the flow dividing unit is installed in the middle of the gas collecting unit. According to the dust adsorption device of the industrial furnace, the flow dividing unit in the gas collecting and filtering mechanism is installed, and the first discharge flow dividing pipe, the second discharge flow dividing pipe and the third discharge flow dividing pipe are arranged to be at three heights, so that most use conditions can be met, and the situation that the discharge rate is low due to the fact that pipelines are too thin is avoided; therefore, the smoothness of discharging and filtering can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of industrial furnaces, and in particular to a dust adsorption device for industrial furnaces. Background Art

[0002] Kilns are equipment made of refractory materials for calcining materials or burning products. Kilns are usually composed of four parts: kiln chamber, combustion equipment, ventilation equipment, and conveying equipment. Electric kilns mostly use electric furnace wires, silicon carbon rods, or molybdenum disilicide as heating elements. They have a relatively simple structure and are easy to operate. There are also a variety of atmosphere kilns. In specific industries, kilns have more subdivided types, such as cement rotary kilns, glass tank kilns, steel blast furnaces and converters, and some equipment in the chemical industry can also be classified as kilns. But in the usual sense, industrial kilns mainly refer to calcining equipment for metals and inorganic materials.

[0003] The dust adsorption device of an industrial furnace with the publication number CN214050985U belongs to the technical field of furnace dust treatment equipment. The dust adsorption device of the industrial furnace includes a furnace body and a dust treatment mechanism. The dust treatment mechanism includes a treatment box, an air intake pipe, an air intake branch pipe, a negative pressure fan and an exhaust pipe. The treatment box is installed on the top of the furnace body, and the air intake pipe is arranged inside the treatment box. The bottom of the air intake pipe runs through the treatment box, and the bottom end of the air intake pipe is connected to the air outlet port on the top of the furnace body. A sealing end cover is arranged on the top of the air intake pipe. The smoke and dust generated by the furnace body of this patent passes through the air intake pipe and the air intake branch pipe from the air outlet port into the clean water layer inside the treatment box. The clean water layer adsorbs the dust in the smoke inside the water source, and finally the filtered smoke is discharged from the exhaust pipe, so as to pre-treat the smoke and dust generated by the furnace and reduce the pollution of the smoke and dust to the environment.

[0004] The above device still has certain shortcomings. The device completes the dust filtering by using a multi-stage filtering system in the filtering device. However, since the industrial furnaces use different powers for firing different objects, when used at high power, the pipe diameter is fixed and the dust cannot be discharged in time, which may cause blockage of the pipes and filtering mechanisms in the filtering system. Therefore, the above device needs to be improved. Summary of the invention

[0005] The object of the present invention is to provide a dust adsorption device for an industrial furnace to solve the problems raised in the above background technology.

[0006] In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions: A dust adsorption device for an industrial furnace, comprising an industrial furnace, a support frame, an air collecting and filtering mechanism and an emission mechanism, wherein the support frame is installed at the upper end of the industrial furnace, the air collecting and filtering mechanism is installed at the middle of the support frame, and the emission mechanism is installed at the middle of the air collecting and filtering mechanism. The air collecting and filtering mechanism comprises an air collecting unit, a rotating unit and a diversion unit, wherein the air collecting unit is installed at the upper end of the industrial furnace, the rotating unit is installed at the middle of the air collecting unit, and the diversion unit is installed at the middle of the air collecting unit.

[0007] According to the above technical solution, the gas collecting unit includes a gas collecting hopper, a gas supply pipe and a filter box. The gas collecting hopper is fixedly installed on the top surface of the industrial furnace, and the filter box is fixedly installed in the middle of the support frame. Filtered water is added to the inside of the filter box, and the water level is higher than the filter mesh and lower than the activated carbon adsorption plate. The bottom end of the gas supply pipe is fixedly installed in the middle of the gas collecting hopper, and the top end of the gas supply pipe passes through the bottom surface of the filter box and is installed in the middle of the filter box.

[0008] According to the above technical solution, the rotating unit includes a rotating rod, a fan, a connecting block, a connecting rod, a limit block, a torsion spring and a rotating knocking rod. The rotating rod is rotatably installed in the middle part of the air pipe, and the top end of the rotating rod passes through the top surface of the air pipe. The fan is fixedly installed on the surface of the rotating rod, and the rotating rod is installed in the middle part of the air pipe. The connecting block is fixedly installed on the top end of the rotating rod, the inner end of the connecting rod is fixedly installed on both sides of the connecting block, the limit block is fixedly installed on the surface of the connecting rod, the rotating knocking rod is rotatably installed on the outer end of the connecting rod, one end of the torsion spring is fixedly installed on the surface of the limit block, and the other end of the torsion spring is fixedly installed on the surface of the rotating knocking rod.

[0009] According to the above technical solution, the diversion unit includes a slide rail, a sealing sleeve, a slide plate, a first discharge diversion pipe, a second discharge diversion pipe, a third discharge diversion pipe, a one-way valve and a spring. The slide rail is fixedly installed on the inner wall of the gas pipe, the sealing sleeve is slidably installed on the surface of the rotating rod, the slide plate is fixedly installed on the surface of the sealing sleeve, and the slide plate is slidably installed on the surface of the slide rail, the top end of the first discharge diversion pipe is fixedly installed on the surface of the gas pipe, the top end of the second discharge diversion pipe is fixedly installed on the surface of the gas pipe, and the second discharge diversion pipe is installed at the upper end of the first discharge diversion pipe, the third discharge diversion pipe is fixedly installed on the surface of the gas pipe, and the third discharge diversion pipe is installed at the upper end of the second discharge diversion pipe, the one-way valve is fixedly installed on the inner wall of the first discharge diversion pipe, the top end of the spring is fixedly installed on the top surface of the inner wall of the gas pipe, and the bottom end of the spring is fixedly installed on the top surface of the slide plate.

[0010] According to the above technical solution, the discharge mechanism includes a filter, an activated carbon adsorption plate, a discharge pipe and a negative pressure fan, the filter is fixedly installed on the inner wall of the filter box, the activated carbon adsorption plate is fixedly installed on the inner wall of the filter box, and the activated carbon adsorption plate is installed on the upper end of the filter, the discharge pipe is fixedly installed on the top of the filter box, and the negative pressure fan is fixedly installed in the middle of the discharge pipe.

[0011] According to the above technical solution, the top ends of the first discharge diversion pipe, the second discharge diversion pipe and the third discharge diversion pipe are all connected to the gas pipe, and the middle parts of the first discharge diversion pipe, the second discharge diversion pipe and the third discharge diversion pipe are installed with a one-way valve. By installing the one-way valve, the water inside the filter box will not enter the interior of the industrial furnace through the first discharge diversion pipe.

[0012] According to the above technical solution, the activated carbon adsorption plate is installed on the upper end of the filter screen, and the middle part of the activated carbon adsorption plate is a hollow trapezoid.

[0013] According to the above technical solution, the slide plate is located in the middle of the first discharge diversion pipe and the second discharge diversion pipe. By such an arrangement, the gas pipe and the filter box can always maintain a one-way passage.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. The dust adsorption device of the industrial furnace is installed with a diversion unit in the gas collecting and filtering mechanism. By setting the first discharge diversion pipe, the second discharge diversion pipe and the third discharge diversion pipe to three heights, it can meet most usage conditions and will not cause a low emission rate due to the pipe being too thin, thereby increasing the fluency of the emission filtration.

[0015] 2. The dust adsorption device of the industrial furnace is installed with a sealing sleeve, a slide plate and a spring in the gas collecting and filtering mechanism. The opening and closing of the second discharge diverter pipe and the third discharge diverter pipe can be controlled by the elastic potential energy of the spring. If the gas pressure is relatively large, the slide plate and the sealing sleeve can be pushed upward to compress the spring. After the slide plate moves to the top of the second discharge diverter pipe, if the first discharge diverter pipe and the second discharge diverter pipe can be fully discharged, the slide plate will remain in the middle of the second discharge diverter pipe and the third discharge diverter pipe. If it is insufficient, the slide plate will continue to be pushed to open all the passages, thereby achieving the purpose of automatically controlling the opening and closing of the passages.

[0016] 3. The dust adsorption device of the industrial furnace is installed with a rotating unit in the gas collecting and filtering mechanism. After the gas passes through the middle of the gas pipeline, the fan is driven to rotate by the airflow, and then the rotating rod drives the rotating knocking rod to rotate, so that the bottom surface of the filter can be hit, so that the dust and harmful substances accumulated in the middle of the filter can be shaken off, thereby ensuring the smooth filtering of the filter.

[0017] 4. The dust adsorption device of the industrial furnace is equipped with an activated carbon adsorption plate in the emission mechanism. The activated carbon adsorption plate is set to a hollow trapezoid, thereby increasing the filtration area of ​​the activated carbon adsorption plate, so that more gases can be filtered at the same time, and the three-way filter can filter and discharge harmful gases faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the front side of the present invention; Figure 2 It is a schematic diagram of the left plane structure of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the cross-section structure at AA in the middle; Figure 4 It is a schematic diagram of the overall structure of the gas collecting and filtering mechanism of the present invention; Figure 5 It is a schematic diagram of the internal structure of the gas collecting and filtering mechanism of the present invention; Figure 6 It is a schematic diagram of the structure of the diversion unit of the present invention; Figure 7 It is a schematic diagram of the internal structure of the diversion unit of the present invention.

[0019] In the figure: 1. industrial furnace; 2. support frame; 3. gas collecting and filtering mechanism; 301. gas collecting hopper; 302. gas transmission pipe; 303. filter box; 304. rotating rod; 305. fan; 306. connecting block; 307. connecting rod; 308. limit block; 309. torsion spring; 310. rotating knocking rod; 311. slide rail; 312. sealing sleeve; 313. slide plate; 314. first discharge diverter pipe; 315. second discharge diverter pipe; 316. third discharge diverter pipe; 317. one-way valve; 318. spring; 4. discharge mechanism; 401. filter screen; 402. activated carbon adsorption plate; 403. discharge pipe; 404. negative pressure fan. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0021] See also Figures 1 to 7 The present invention provides a technical solution: a dust adsorption device for an industrial furnace, comprising an industrial furnace 1, a support frame 2, an air collecting and filtering mechanism 3 and an emission mechanism 4, the support frame 2 is installed at the upper end of the industrial furnace 1, the air collecting and filtering mechanism 3 is installed at the middle of the support frame 2, the emission mechanism 4 is installed at the middle of the air collecting and filtering mechanism 3, the air collecting and filtering mechanism 3 comprises an air collecting unit, a rotating unit and a diversion unit, the air collecting unit is installed at the upper end of the industrial furnace 1, the rotating unit is installed at the middle of the air collecting unit, and the diversion unit is installed at the middle of the air collecting unit.

[0022] The gas collecting unit includes a gas collecting hopper 301, a gas supply pipe 302 and a filter box 303. The gas collecting hopper 301 is fixedly installed on the top surface of the industrial furnace 1, and the filter box 303 is fixedly installed in the middle of the support frame 2. Filtered water is added to the inside of the filter box 303, and the water level is higher than the filter mesh 401 and lower than the activated carbon adsorption plate 402. The bottom end of the gas supply pipe 302 is fixedly installed in the middle of the gas collecting hopper 301, and the top end of the gas supply pipe 302 passes through the bottom surface of the filter box 303 and is installed in the middle of the filter box 303.

[0023] The rotating unit includes a rotating rod 304, a fan 305, a connecting block 306, a connecting rod 307, a limiting block 308, a torsion spring 309 and a rotating knocking rod 310. The rotating rod 304 is rotatably installed in the middle of the air pipe 302, and the top of the rotating rod 304 passes through the top surface of the air pipe 302. The fan 305 is fixedly installed on the surface of the rotating rod 304, and the rotating rod 304 is installed in the middle of the air pipe 302. The connecting block 306 is fixedly installed on the top of the rotating rod 304, the inner end of the connecting rod 307 is fixedly installed on both sides of the connecting block 306, and the limiting block 308 is fixedly installed on the surface of the connecting rod 307. The rotating knocking rod 310 is rotatably installed on the outer end of the connecting rod 307, one end of the torsion spring 309 is fixedly installed on the surface of the limit block 308, and the other end of the torsion spring 309 is fixedly installed on the surface of the rotating knocking rod 310. By installing the rotating unit in the gas collecting and filtering mechanism 3, after the gas passes through the middle part of the gas supply pipe 302, the fan 305 is driven to rotate by the airflow, and then the rotating rod 304 drives the rotating knocking rod 310 to rotate, so that the bottom surface of the filter net 401 can be hit, so that the dust and harmful substances accumulated in the middle part of the filter net 401 can be shaken off, thereby ensuring the smooth filtering of the filter net 401.

[0024] The flow dividing unit comprises a slide rail 311, a sealing sleeve 312, a slide plate 313, a first discharge flow dividing pipe 314, a second discharge flow dividing pipe 315, a third discharge flow dividing pipe 316, a one-way valve 317 and a spring 318. The slide rail 311 is fixedly mounted on the inner wall of the gas supply pipe 302, the sealing sleeve 312 is slidably mounted on the surface of the rotating rod 304, the slide plate 313 is fixedly mounted on the surface of the sealing sleeve 312, and the slide plate 313 is slidably mounted on the surface of the slide rail 311. The slide plate 313 is located in the middle of the first discharge flow dividing pipe 314 and the second discharge flow dividing pipe 315. By such an arrangement, the gas supply pipe 302 and the filter box 303 can always maintain a one-way passage, and the top of the first discharge flow dividing pipe 314 is fixedly mounted on the surface of the rotating rod 304. The first discharge diverter pipe 314, the second discharge diverter pipe 315 and the third discharge diverter pipe 316 are all connected to the gas pipe 302, and the middle parts of the first discharge diverter pipe 314, the second discharge diverter pipe 315 and the third discharge diverter pipe 316 are all installed with a one-way valve 317. By installing the one-way valve 317, the water inside the filter box 303 will not enter the interior of the industrial furnace 1 through the first discharge diverter pipe 314. The top end of the second discharge diverter pipe 315 is fixedly installed on the surface of the gas pipe 302, and the second discharge diverter pipe 315 is installed on the upper end of the first discharge diverter pipe 314. The third discharge diverter pipe 316 is fixedly installed on the The third discharge diverter pipe 316 is installed on the surface of the gas pipeline 302, and the third discharge diverter pipe 316 is installed on the upper end of the second discharge diverter pipe 315, the one-way valve 317 is fixedly installed on the inner wall of the first discharge diverter pipe 314, the top end of the spring 318 is fixedly installed on the top surface of the inner wall of the gas pipeline 302, and the bottom end of the spring 318 is fixedly installed on the top surface of the slide plate 313. By installing the diverter unit in the gas collecting and filtering mechanism 3, by setting the first discharge diverter pipe 314, the second discharge diverter pipe 315 and the third discharge diverter pipe 316 to three heights, most usage conditions can be met, and the discharge rate will not be low due to the pipe being too thin, thereby increasing the fluency of the discharge filtration, and by installing the air collecting and filtering mechanism 3 The sealing sleeve 312, the slide plate 313 and the spring 318 can control the opening and closing of the second discharge diverter pipe 315 and the third discharge diverter pipe 316 through the elastic potential energy of the spring 318. If the gas pressure is relatively high, the slide plate 313 and the sealing sleeve 312 can be pushed upward, thereby compressing the spring 318. After the slide plate 313 moves to the top of the second discharge diverter pipe 315, if the first discharge diverter pipe 314 and the second discharge diverter pipe 315 cooperate to discharge completely, the slide plate 313 will be maintained in the middle of the second discharge diverter pipe 315 and the third discharge diverter pipe 316. If it is insufficient, the slide plate 313 will continue to be pushed to open all the passages, thereby achieving the purpose of automatically controlling the opening and closing of the passages.

[0025] The discharge mechanism 4 includes a filter 401, an activated carbon adsorption plate 402, a discharge pipe 403 and a negative pressure fan 404. The filter 401 is fixedly installed on the inner wall of the filter box 303, the activated carbon adsorption plate 402 is fixedly installed on the inner wall of the filter box 303, and the activated carbon adsorption plate 402 is installed on the upper end of the filter 401. The activated carbon adsorption plate 402 is installed on the upper end of the filter 401, and the middle part of the activated carbon adsorption plate 402 is a hollow trapezoid. The discharge pipe 403 is fixedly installed on the top of the filter box 303, and the negative pressure fan 404 is fixedly installed in the middle part of the discharge pipe 403. By installing the activated carbon adsorption plate 402 in the discharge mechanism 4, the activated carbon adsorption plate 402 is set to a hollow trapezoid, thereby increasing the filtering area of ​​the activated carbon adsorption plate 402, so that more gases can be filtered at the same time, and the three passages can be used to filter and discharge harmful gases faster.

[0026] When the present invention is used, the industrial furnace 1 is first turned on. After being turned on, the industrial furnace 1 heats the items inside. During the heating process, the hot air flows upward, carrying some dust and harmful substances. During the rising process of the hot air flow, it enters the middle part of the gas pipe 302 through the gas collecting bucket 301. When the hot air flow passes through the surface of the fan 305, it can drive the fan 305 to rotate. The rotation of the fan 305 drives the rotating rod 304 to rotate. The rotation of the rotating rod 304 drives the connecting block 306 and the connecting rod 307 to rotate. The rotation of the connecting rod 307 drives the rotating knocking rod 310 at the outer end to rotate. When the rotating knocking rod 310 is caught, its outer end hits the bottom surface of the filter 401 to generate vibration. At this time, the air flow enters the middle part of the first discharge diversion pipe 314 through the gas pipe 302, enters the water through the bottom end of the first discharge diversion pipe 314, floats upward after being filtered in the water, and carries some dust and harmful substances to be adsorbed on the surface of the filter 401 during the floating process of the gas. After the filter 401 is struck and vibrated by rotating the knocking rod 310, dust and harmful substances fall off the surface of the filter 401, and the filtered gas continues to float upward, passing through the middle of the activated carbon adsorption plate 402 during the floating process, forming three filtrations and then being discharged from the discharge pipe 403 through the negative pressure fan 404. If there is a lot of gas generated inside, the pressure after entering the gas pipe 302 is also relatively large. After the air pressure is too large, since the diameter of the first discharge diversion pipe 314 is fixed, its discharge amount will reach the upper limit. At this time, the gas inside the gas pipe 302 pushes the slide plate 313 through its own pressure, so that the slide plate 313 slides upward on the surface of the rotating rod 304 through the sealing sleeve 312 until the air pressure is balanced with the pressure of the spring 318. Since the slide plate 313 moves upward, the second discharge diversion pipe 315 and the third discharge diversion pipe 316 are also opened, and at the same time, the discharge of the first discharge diversion pipe 314 is shared, thereby increasing the discharge filtering speed.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dust adsorption device for an industrial furnace, comprising an industrial furnace (1), a support frame (2), an air collecting and filtering mechanism (3) and an exhaust mechanism (4), characterized in that: The support frame (2) is installed at the upper end of the industrial furnace (1), the gas collecting and filtering mechanism (3) is installed at the middle of the support frame (2), and the discharge mechanism (4) is installed at the middle of the gas collecting and filtering mechanism (3); The gas collecting and filtering mechanism (3) comprises a gas collecting unit, a rotating unit and a flow dividing unit; the gas collecting unit is installed at the upper end of the industrial furnace (1); the rotating unit is installed at the middle of the gas collecting unit; the flow dividing unit is installed at the middle of the gas collecting unit; the gas collecting unit comprises a gas collecting hopper (301), a gas transmission pipe (302) and a filter box (303); the gas collecting hopper (301) is fixedly installed on the top surface of the industrial furnace (1); the filter box (303) is fixedly installed on the middle of the support frame (2); the bottom end of the gas transmission pipe (302) is fixedly installed on the gas collecting hopper (301); The top end of the air delivery pipe (302) passes through the bottom surface of the filter box (303) and is installed in the middle of the filter box (303); the rotating unit comprises a rotating rod (304), a fan (305), a connecting block (306), a connecting rod (307), a limiting block (308), a torsion spring (309) and a rotating knocking rod (310); the rotating rod (304) is rotatably installed in the middle of the air delivery pipe (302), and the top end of the rotating rod (304) passes through the top surface of the air delivery pipe (302); the fan (305) is fixedly installed on the surface of the rotating rod (304), and the The rotating rod (304) is installed in the middle of the gas transmission pipe (302), the connecting block (306) is fixedly installed on the top of the rotating rod (304), the inner end of the connecting rod (307) is fixedly installed on both sides of the connecting block (306), the limit block (308) is fixedly installed on the surface of the connecting rod (307), the rotating knocking rod (310) is rotatably installed on the outer end of the connecting rod (307), one end of the torsion spring (309) is fixedly installed on the surface of the limit block (308), and the other end of the torsion spring (309) is fixedly installed on the surface of the rotating knocking rod (310). The discharge mechanism (4) comprises a filter (401), an activated carbon adsorption plate (402), a discharge pipe (403) and a negative pressure fan (404); the filter (401) is fixedly mounted on the inner wall of the filter box (303); the activated carbon adsorption plate (402) is fixedly mounted on the inner wall of the filter box (303); and the activated carbon adsorption plate (402) is mounted on the upper end of the filter (401); the discharge pipe (403) is fixedly mounted on the top of the filter box (303); and the negative pressure fan (404) is fixedly mounted in the middle of the discharge pipe (403); The slide plate (313) is located in the middle of the first discharge diversion pipe (314) and the second discharge diversion pipe (315).

2. The dust adsorption device for an industrial furnace according to claim 1, characterized in that: The flow diversion unit comprises a slide rail (311), a sealing sleeve (312), a slide plate (313), a first discharge diversion pipe (314), a second discharge diversion pipe (315), a third discharge diversion pipe (316), a one-way valve (317) and a spring (318); the slide rail (311) is fixedly mounted on the inner wall of the gas transmission pipe (302); the sealing sleeve (312) is slidably mounted on the surface of the rotating rod (304); the slide plate (313) is fixedly mounted on the surface of the sealing sleeve (312); and the slide plate (313) is slidably mounted on the surface of the slide rail (311); the top end of the first discharge diversion pipe (314) is fixedly mounted on the inner wall of the gas transmission pipe (302); The top end of the second discharge diverter pipe (315) is fixedly mounted on the surface of the gas supply pipe (302), and the second discharge diverter pipe (315) is mounted on the upper end of the first discharge diverter pipe (314), the third discharge diverter pipe (316) is fixedly mounted on the surface of the gas supply pipe (302), and the third discharge diverter pipe (316) is mounted on the upper end of the second discharge diverter pipe (315), the one-way valve (317) is fixedly mounted on the inner wall of the first discharge diverter pipe (314), the top end of the spring (318) is fixedly mounted on the top surface of the inner wall of the gas supply pipe (302), and the bottom end of the spring (318) is fixedly mounted on the top surface of the slide plate (313).

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