Waste gas collecting box for waste gas treatment

Abstract

The invention relates to the technical field of waste gas treatment, and discloses a waste gas collecting box for waste gas treatment, the waste gas collecting box comprises a waste gas box, the top of the waste gas box is fixedly connected with a gas inlet pipe, the waste gas collecting box further comprises a filtering mechanism, the filtering mechanism comprises a base connected to the outer wall of the waste gas box, and the end, away from the waste gas box, of the base is fixedly connected with a gas outlet pipe; a side plate is fixedly connected to the top of the base, a switching assembly is fixedly connected to the top of the base, a rotating assembly is further fixedly connected to the top of the base, and the rotating assembly is arranged, so that when a filter screen needs to be cleaned, the filter screen is controlled to rotate; the side with a large amount of dust faces the other side under rotation of the filter screen, impurities on the filter screen can fall off from the filter screen under blowing of waste gas, cleaning of one side of the filter screen is completed, and damage to the filter screen caused by use of a brush is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas treatment, in particular to a waste gas collecting box for waste gas treatment. Background Art

[0002] An exhaust gas header is a device used to collect and gather exhaust gas, which brings together exhaust gas from multiple sources for subsequent unified treatment. For example, in a factory, different production equipment may generate exhaust gas, and an exhaust gas header can collect these exhaust gases to avoid environmental pollution caused by scattered exhaust gas emissions. Some exhaust gas headers may also have some preliminary treatment functions, such as filtering larger particles of impurities, reducing the temperature of exhaust gas, etc., to reduce the burden for subsequent deep treatment.

[0003] The patent application with application number CN202322346471.5 discloses an exhaust gas collecting box for exhaust gas treatment, which is applied in the field of exhaust gas treatment, including a box body, a first air inlet pipe and a second air inlet pipe are respectively passed through the top of the box body, the other ends of the first air inlet pipe and the second air inlet pipe are respectively fixedly sleeved with a bent tube and a fixed frame, a first air outlet is provided on the surface of the bent tube, a second air outlet is provided on one side of the fixed frame, a holder and a U-shaped plate are respectively welded from bottom to top on one side of the box body, a filter is placed on the top of the holder, a fixing plate is arranged inside the U-shaped plate, and a limiting spring is bolted between one side of the fixing plate and the U-shaped plate through a spring fixing sheet; it can improve the mixing effect with the exhaust gas, reduce the noise generated in the box, has high practicality, and at the same time can facilitate the disassembly and assembly of the filter, is simple and convenient to operate, and improves the cleaning efficiency of the staff.

[0004] The exhaust gas collecting box has some preliminary processing functions and can filter out larger particles of impurities. However, with the long-term use of the equipment, the filter screen will become clogged. The commonly used method is to clean the filter with a brush, but this cleaning method will damage the screen and is not conducive to subsequent use. Summary of the invention

[0005] The object of the present invention is to provide an exhaust gas collecting box for exhaust gas treatment to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: an exhaust gas collecting box for exhaust gas treatment, comprising an exhaust gas box, the top of which is fixedly connected to an air intake pipe, and further comprising: The filtering mechanism includes a base connected to the outer wall of the exhaust gas box, the end of the base away from the exhaust gas box is fixedly connected to an exhaust pipe, the top of the base is fixedly connected to a side plate, the top of the base is fixedly connected to a switching component, and the top of the base is also fixedly connected to a rotating component.

[0007] According to the above technical solution, the switching component includes an outer shell, the inner wall of the outer shell is fixedly connected with a partition, the inner wall of the outer shell is fixedly connected with a support bar, wherein the support bar is used to support the bottom of the adjustment component to prevent the adjustment component from being unable to block the two notches, the outer wall of the outer shell is provided with a slide groove one, the inner wall of the slide groove one is movably connected with the adjustment component, and the top of the partition is provided with a notch, wherein there are two notches, one notch movably connected to the dust collecting frame is used for the entry of exhaust gas, and the other is used for the discharge of exhaust gas, and the inner wall of the notch is movably connected to the dust collecting component.

[0008] According to the above technical solution, the adjustment component includes a connecting plate 1, the inner wall of the slide groove 1 is movably connected to the connecting plate 1, the bottom of the connecting plate 1 is movably connected to the support bar, the top of the connecting plate 1 is fixedly connected with a baffle plate, and the side of the connecting plate 1 away from the baffle plate is fixedly connected with a baffle strip, wherein the baffle strip is used to block the slide groove 1 to prevent exhaust gas from leaking from the slide groove 1 to the outside of the equipment.

[0009] According to the above technical solution, the end of the shielding strip away from the connecting plate is fixedly connected to the annular plate 1, the inner wall of the annular plate 1 is fixedly connected to the sliding column 3, the outer wall of the sliding column 3 is movably connected to the sliding groove plate, the outer wall of the sliding column 3 is sleeved with a spring 1, one end of the spring 1 is fixedly connected to the annular plate 1, the end of the spring 1 away from the annular plate 1 is fixedly connected to the sliding groove plate, the outer wall of the annular plate 1 is fixedly connected to the push rod 1, and the end of the push rod 1 away from the annular plate 1 is fixedly connected to the base.

[0010] According to the above technical solution, the inner wall of the slide plate is movably connected to a movable column, the inner wall of the outer shell is rotatably connected to a guide plate through a bearing, the end of the guide plate close to the outer shell is fixedly connected to an extension plate, and the end of the extension plate away from the guide plate is fixedly connected to the movable column. When the filter needs to be cleaned, the adjustment component will be started first, and the air duct trajectory in the equipment will allow the exhaust gas to pass through the dust collecting frame. In this way, impurities cleaned from the filter will not flow to the subsequent equipment, and workers only need to clean the dust collecting frame regularly.

[0011] According to the above technical solution, the dust collecting assembly includes a dust collecting frame, the outer wall of the dust collecting frame is movably connected to the notch, the bottom of the dust collecting frame is fixedly connected to a sliding column 1, and the bottom of the sliding column 1 is fixedly connected to an annular plate 2.

[0012] The top of the second spring is fixedly connected to the dust collecting frame by the spring, and the top of the second spring is fixedly connected to the dust collecting frame by the spring.

[0013] According to the above technical scheme, the rotating assembly includes an annular plate three, the outer wall of the annular plate three is fixedly connected to the base, the top of the annular plate three is fixedly connected to a motor, the inner wall of the annular plate three is fixedly connected to a movable plate one, the movable plate one and the inner wall of the annular plate three are rotatably connected to a filter screen through a bearing, the output end of the motor is fixedly connected to the filter screen, and when the filter screen needs to be cleaned, the filter screen is controlled to rotate, so that the side with a large amount of dust will face the other side under the rotation of the filter screen, so that the impurities on the filter screen will fall off the filter screen under the blowing of exhaust gas, completing the cleaning of one side of the filter screen and avoiding damage to the filter screen by using a brush, the outer wall of the filter screen is provided with a positioning hole, the inner wall of the movable plate one is movably connected to a sliding shell, and the inner wall of the sliding shell is movably connected The filter screen is fixedly connected with a movable plate 2, and a push rod 3 is fixedly connected to the side of the movable plate 2 away from the sliding shell. The end of the push rod 3 away from the movable plate 2 is fixedly connected to the annular plate 3. The movable plate 2 is fixedly connected with a locking column on the side of the movable plate 2 away from the push rod 3. When the filter screen does not rotate, the filter screen is fixed to prevent the flow of exhaust gas from deflecting the filter screen, causing gaps to appear on both sides of the filter screen, resulting in a decrease in the filtering effect. The outer wall of the locking column is movably connected to the positioning hole, and the outer wall of the locking column is sleeved with a spring 3, one end of the spring 3 is fixedly connected to the movable plate 2, and the end of the spring 3 away from the movable plate 2 is fixedly connected to the sliding shell. When the filter screen needs to rotate, the sliding shells on both sides will move away from the filter screen, and the locking column will also be embedded in the sliding shell to prevent the sliding shell and the positioning column from hindering the rotation of the filter screen.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. The present invention sets a rotating component. When the filter needs to be cleaned, the filter is controlled to rotate, so that the side with a large amount of dust will face the other side under the rotation of the filter. In this way, impurities on the filter will fall off the filter under the blowing of exhaust gas, completing the cleaning of one side of the filter and avoiding damage to the filter by using a brush.

[0015] 2. The present invention sets a rotating component to fix the filter when the filter is not rotating, so as to prevent the flow of exhaust gas from causing the filter to deflect, resulting in gaps on both sides of the filter and reducing the filtering effect. At the same time, when the filter needs to rotate, the sliding shells on both sides will move away from the filter to prevent the sliding shells from hindering the rotation of the filter.

[0016] 3. The present invention sets an adjustment component. When the filter needs to be cleaned, the adjustment component will be started first. The air duct trajectory in the device allows the exhaust gas to pass through the dust collecting frame. In this way, the impurities cleaned from the filter will not flow to the subsequent equipment. Workers only need to clean the dust collecting frame regularly.

[0017] 4. The present invention sets a dust collecting component, which will push the dust collecting frame to move upward before the filter rotates, ensuring the fit between the dust collecting frame and the partition to prevent impurities from leaking from the gap. At the same time, when the dust collecting net is pushed upward, the top cover will be opened to facilitate the entry of impurities into the dust collecting frame. After cleaning, the adjustment component will be reset, and the dust collecting component will also move downward to avoid blocking the movement of the dust collecting component. At this time, the dust collecting device will first seal the top of the dust collecting frame to ensure that no impurities will leak when the dust collecting frame moves. 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 present invention; Figure 2 It is a schematic diagram of the filtering mechanism of the present invention; Figure 3 It is a schematic diagram of the internal structure of the filtering mechanism of the present invention; Figure 4 is a schematic diagram of a switching assembly of the present invention; Figure 5 is a cross-sectional view of the switch assembly housing of the present invention; Figure 6 is a schematic diagram of an adjustment assembly of the present invention; Figure 7 is a schematic diagram of a dust collection assembly of the present invention; Figure 8 It is a schematic diagram of the internal structure of the dust collecting assembly of the present invention; Fig. 9 is a schematic diagram of a rotating assembly of the present invention; Fig.10 is a schematic diagram of a rotating assembly filter screen of the present invention; Fig.11 is a cross-sectional view of a sliding shell of a rotating assembly of the present invention; In the figure: 1, exhaust box; 101, air inlet pipe; 2, filter mechanism; 201, base; 202, air outlet pipe; 203, side plate; 21, switching assembly; 211, shell; 212, partition; 213, support bar; 214, slide groove 1; 215, notch; 22, adjustment assembly; 221, connecting plate 1; 222, shielding plate; 223, shielding bar; 224, annular plate 1; 225, sliding column 3; 226, slide groove plate; 227, spring 1; 228, movable column; 229, extension plate; 2210 , guide plate; 2211, push rod one; 23, dust collection assembly; 231, dust collection frame; 232, sliding column one; 233, annular plate two; 234, push rod two; 235, sliding plate; 236, sliding column two; 237, spring two; 238, top plate; 24, rotating assembly; 241, annular plate three; 242, motor; 243, movable plate one; 244, filter; 245, positioning hole; 246, sliding shell; 247, movable plate two; 248, push rod three; 249, locking column; 2410, spring three. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Example 1: See Figure 1-Figure 5 , Figure 10-11The present invention provides a technical solution: a waste gas collecting box for waste gas treatment, comprising a waste gas box 1, the top of which is fixedly connected with an air intake pipe 101, and further comprising: The filtering mechanism 2 includes a base 201 connected to the outer wall of the exhaust gas box 1, the end of the base 201 away from the exhaust gas box 1 is fixedly connected to the exhaust pipe 202, the top of the base 201 is fixedly connected to the side panel 203, the top of the base 201 is fixedly connected to the switching component 21, and the top of the base 201 is also fixedly connected to the rotating component 24. When the equipment is in use, the exhaust gas will enter the exhaust gas box 1 from the air inlet pipe 101, and then the exhaust gas will pass through the filter net 244 shell 211 and be discharged from the exhaust pipe 202.

[0023] The switching component 21 includes an outer shell 211, the inner wall of which is fixedly connected with a partition 212, the inner wall of which is fixedly connected with a support bar 213, the outer wall of the outer shell 211 is provided with a slide groove 214, the inner wall of the slide groove 214 is movably connected with an adjustment component 22, a notch 215 is provided at the top of the partition 212, the inner wall of the notch 215 is movably connected with the dust collecting component 23, when the equipment cleans the filter 244, the passage of exhaust gas above the partition 212 will be blocked by the adjustment component 22, at which time the exhaust gas will enter the dust collecting component 23 through the notch 215 on the front side, and then be discharged from another notch 215, and be discharged from the exhaust pipe 202 through the outer shell 211.

[0024] The rotating assembly 24 includes an annular plate 3 241, the outer wall of the annular plate 3 241 is fixedly connected to the base 201, the top of the annular plate 3 241 is fixedly connected to a motor 242, the inner wall of the annular plate 3 241 is fixedly connected to a movable plate 1 243, the inner wall of the movable plate 1 243, the inner wall of the annular plate 3 241 is rotatably connected to a filter screen 244 through a bearing, the output end of the motor 242 is fixedly connected to the filter screen 244, the outer wall of the filter screen 244 is provided with a positioning hole 245, the inner wall of the movable plate 1 243 is movably connected to a sliding shell 246, and the inner wall of the sliding shell 246 is movably connected to an movable The movable plate 247 has a side that is fixedly connected with a push rod 3 248 away from the sliding shell 246, and one end of the push rod 3 248 away from the movable plate 247 is fixedly connected to the annular plate 3 241, and the side of the movable plate 247 away from the push rod 3 248 is fixedly connected with a locking column 249, the outer wall of the locking column 249 is movably connected to the positioning hole 245, and the outer wall of the locking column 249 is sleeved with a spring 3 2410, one end of the spring 3 2410 is fixedly connected to the movable plate 247, and one end of the spring 3 2410 away from the movable plate 247 is fixedly connected to the sliding shell 246.

[0025] The working principle of this embodiment is as follows: when the above-mentioned device needs to clean the filter 244, the switching component 21 is first started to change the air duct in the device. After the operation is completed, the push rod three 248 is started to drive the movable plate two 247 to move outward. The movable plate two 247 will drive the locking column 249 to be pulled out from the positioning hole 245, and the locking column 249 is received in the sliding shell 246. Then, as the movable plate two 247 continues to move, the sliding shell 246 is also pulled to move to both sides to provide space for the rotation of the filter 244. After the movement of the sliding shell 246 is completed, the motor 242 is started to drive the filter 244 to rotate 180 degrees, and then the push rod three 248 is started again to reset the sliding shell 246. At this time, as the exhaust gas passes through, the impurities on the filter 244 fall into the dust collecting component 23. After cleaning is completed, the adjustment component 22 and the dust collecting component 23 are reset.

[0026] Example 2: Based on Example 1, please refer to Figure 6-Figure 9 The adjustment component 22 includes a connecting plate 221, an inner wall of a slide groove 214 is movably connected to the connecting plate 221, a bottom of the connecting plate 221 is movably connected to the support bar 213, a shielding plate 222 is fixedly connected to the top of the connecting plate 221, a shielding bar 223 is fixedly connected to the side of the connecting plate 221 away from the shielding plate 222, an end of the shielding bar 223 away from the connecting plate 221 is fixedly connected to an annular plate 224, an inner wall of the annular plate 224 is fixedly connected to a sliding column 225, an outer wall of the sliding column 225 is movably connected to a slide groove plate 226, and an outer wall of the sliding column 225 is sleeved with a spring 227, One end of a spring 227 is fixedly connected to an annular plate 224, and one end of a spring 227 away from annular plate 224 is fixedly connected to a slide plate 226. A push rod 2211 is fixedly connected to an outer wall of the annular plate 224, and one end of the push rod 2211 away from annular plate 224 is fixedly connected to a base 201. A movable column 228 is movably connected to an inner wall of the slide plate 226. A guide plate 2210 is rotatably connected to an inner wall of the outer shell 211 through a bearing. An end of the guide plate 2210 close to the outer shell 211 is fixedly connected to an extension plate 229, and one end of the extension plate 229 away from the guide plate 2210 is fixedly connected to the movable column 228.

[0027] The dust collecting assembly 23 includes a dust collecting frame 231, the outer wall of the dust collecting frame 231 is movably connected to the notch 215, the bottom of the dust collecting frame 231 is fixedly connected with a sliding column 232, the bottom of the sliding column 232 is fixedly connected with a ring plate 233, the outer wall of the sliding column 232 is movably connected with a sliding plate 235, the bottom of the sliding plate 235 is fixedly connected with a push rod 234, the bottom of the push rod 234 is fixedly connected to the base 201, the top of the sliding plate 235 is fixedly connected with a sliding column 236, the outer wall of the sliding column 236 is movably connected to the dust collecting frame 231, the outer wall of the sliding column 236 is sleeved with a spring 237, the bottom of the spring 237 is fixedly connected to the sliding plate 235, the top of the spring 237 is fixedly connected to the dust collecting frame 231, and the top of the sliding column 236 is fixedly connected to a top plate 238.

[0028] The working principle of this embodiment is as follows: when the filter screen 244 needs to be cleaned, the push rod 2211 is first started to drive the annular plate 224 to move, the moving annular plate 224 drives the connecting plate 221 to move, the moving connecting plate 221 drives the blocking plate to leave the bottom of the notch 215, and the movement of the connecting plate 221 drives the chute plate 226 to move together, and the moving chute plate 226 drives the extension plate 229 to deflect through the movable column 228. Then, the deflection of the extension plate 229 drives the guide plate 2210 to deflect, changing the flow direction of the gas in the shell 211. After the adjustment component 22 completes the switching, the push rod 234 is started to push up the sliding plate 235. The pushed sliding plate 235 pushes up the dust collecting frame 231 through the spring, and allows the dust collecting frame 231 to fit the bottom of the notch 215. As the push rod 234 continues to rise, the sliding plate 235 will lift the top through the sliding column 236 to facilitate the collection of impurities.

[0029] 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", "comprise" or any other variants 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.

[0030] Finally, it should be noted that the above description 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. An exhaust gas collecting box for exhaust gas treatment, comprising an exhaust gas box (1), wherein an air intake pipe (101) is fixedly connected to the top of the exhaust gas box (1), characterized in that: Also includes: A filtering mechanism (2), the filtering mechanism (2) comprising a base (201) connected to the outer wall of an exhaust gas box (1), an end of the base (201) away from the exhaust gas box (1) being fixedly connected to an exhaust pipe (202), a top of the base (201) being fixedly connected to a side plate (203), a top of the base (201) being fixedly connected to a switching component (21), and a top of the base (201) being further fixedly connected to a rotating component (24).

2. The exhaust gas collecting box for exhaust gas treatment according to claim 1, characterized in that: The switching component (21) comprises a shell (211), the inner wall of the shell (211) is fixedly connected to a partition (212), the inner wall of the shell (211) is fixedly connected to a support bar (213), the outer wall of the shell (211) is provided with a slide groove (214), the inner wall of the slide groove (214) is movably connected to the adjustment component (22), the top of the partition (212) is provided with a notch (215), and the inner wall of the notch (215) is movably connected to the dust collecting component (23).

3. The exhaust gas collecting box for exhaust gas treatment according to claim 2, characterized in that: The adjustment assembly (22) comprises a connecting plate (221), the inner wall of the slide groove (214) is movably connected to the connecting plate (221), the bottom of the connecting plate (221) is movably connected to the support strip (213), the top of the connecting plate (221) is fixedly connected to a shielding plate (222), and the side of the connecting plate (221) away from the shielding plate (222) is fixedly connected to a shielding strip (223).

4. The exhaust gas collecting box for exhaust gas treatment according to claim 3, characterized in that: One end of the shielding strip (223) away from the connecting plate (221) is fixedly connected to an annular plate (224), the inner wall of the annular plate (224) is fixedly connected to a sliding column (225), the outer wall of the sliding column (225) is movably connected to a sliding groove plate (226), the outer wall of the sliding column (225) is sleeved with a spring (227), one end of the spring (227) is fixedly connected to the annular plate (224), the end of the spring (227) away from the annular plate (224) is fixedly connected to the sliding groove plate (226), the outer wall of the annular plate (224) is fixedly connected to a push rod (2211), and the end of the push rod (2211) away from the annular plate (224) is fixedly connected to the base (201).

5. The exhaust gas collecting box for exhaust gas treatment according to claim 4, characterized in that: The inner wall of the slide plate (226) is movably connected to a movable column (228), the inner wall of the outer shell (211) is rotatably connected to a guide plate (2210) via a bearing, one end of the guide plate (2210) close to the outer shell (211) is fixedly connected to an extension plate (229), and one end of the extension plate (229) away from the guide plate (2210) is fixedly connected to the movable column (228).

6. The exhaust gas collecting box for exhaust gas treatment according to claim 5, characterized in that: The dust collecting assembly (23) comprises a dust collecting frame (231), the outer wall of the dust collecting frame (231) being movably connected to the notch (215), the bottom of the dust collecting frame (231) being fixedly connected to a sliding column 1 (232), and the bottom of the sliding column 1 (232) being fixedly connected to an annular plate 2 (233).

7. The exhaust gas collecting box for exhaust gas treatment according to claim 6, characterized in that: The outer wall of the sliding column 1 (232) is movably connected to a sliding plate (235), the bottom of the sliding plate (235) is fixedly connected to a push rod 2 (234), the bottom of the push rod 2 (234) is fixedly connected to the base (201), the top of the sliding plate (235) is fixedly connected to a sliding column 2 (236), the outer wall of the sliding column 2 (236) is movably connected to the dust collecting frame (231), the outer wall of the sliding column 2 (236) is sleeved with a spring 2 (237), the bottom of the spring 2 (237) is fixedly connected to the sliding plate (235), the top of the spring 2 (237) is fixedly connected to the dust collecting frame (231), and the top of the sliding column 2 (236) is fixedly connected to a top plate (238).

8. The exhaust gas collecting box for exhaust gas treatment according to claim 7, characterized in that: The rotating assembly (24) comprises an annular plate three (241), the outer wall of the annular plate three (241) is fixedly connected to the base (201), the top of the annular plate three (241) is fixedly connected to a motor (242), the inner wall of the annular plate three (241) is fixedly connected to a movable plate one (243), the movable plate one (243) and the inner wall of the annular plate three (241) are rotatably connected to a filter screen (244) via a bearing, the output end of the motor (242) is fixedly connected to the filter screen (244), the outer wall of the filter screen (244) is provided with a positioning hole (245), the inner wall of the movable plate one (243) is movably connected to a sliding shell (246), and the inner wall of the sliding shell (246) is movably connected to A movable plate 2 (247), a side of the movable plate 2 (247) away from the sliding shell (246) is fixedly connected to a push rod 3 (248), an end of the push rod 3 (248) away from the movable plate 2 (247) is fixedly connected to the annular plate 3 (241), a side of the movable plate 2 (247) away from the push rod 3 (248) is fixedly connected to a locking column (249), an outer wall of the locking column (249) is movably connected to the positioning hole (245), an outer wall of the locking column (249) is sleeved with a spring 3 (2410), one end of the spring 3 (2410) is fixedly connected to the movable plate 2 (247), and one end of the spring 3 (2410) away from the movable plate 2 (247) is fixedly connected to the sliding shell (246).

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