Drilling fixture for air compressor cylinder body

Abstract

The present invention relates to the technical field of air compressor processing, and specifically to a drilling processing fixture for an air compressor cylinder body, comprising a fixture table, a movable seat is slidably arranged on the top of the fixture table, a clamping mechanism for fixing the air compressor cylinder body is arranged on the top of the movable seat, and a positioning block is fixedly installed on the fixture table on one side of the movable seat, and a recovery mechanism for absorbing metal debris is arranged on the top of the positioning block; by controlling the extended end of the cylinder to extend to the longest, the baffle plate cooperates with the thrust spring to drive the clamping plate to slide, so that the rubber ring cooperates with the rubber plate to clamp and fix the two ends of the air compressor cylinder body, the extended end of the cylinder cooperates with the support roller to drive the L-shaped rod to rotate, so that the flip block abuts against the inner wall of the air compressor cylinder body, and the mechanical arm and the driving motor are controlled to operate so that the drill bit drills a hole in the air compressor cylinder body, and the drill bit continues to penetrate into the through hole after penetrating the air compressor cylinder body, and the flip block supports the periphery of the perforation to prevent the periphery of the perforation of the air compressor cylinder body from being concave.

Description

Technical Field

[0001] The invention relates to the technical field of air compressor processing, in particular to a drilling processing fixture for an air compressor cylinder body. Background Art

[0002] The air compressor is the main body of the air source device. It is a device that converts the mechanical energy of the prime mover into gas pressure energy. It is a gas pressure generating device for compressed air. Its working principle is to use the air compression principle to compress the gas into a smaller volume through mechanical force, thereby increasing the gas pressure. During the processing of the cylinder body of a small household air compressor, it is necessary to position and punch holes for it;

[0003] Since the outer wall of the cylinder body of a small household air compressor is relatively thin, when drilling a hole in it with an existing drilling fixture, it is difficult to control the downward pressure of the drill bit, which can easily cause a depression around the perforation of the cylinder body of the air compressor, affecting the normal use of the small household air compressor. At the same time, during the drilling process, a small amount of metal debris is likely to remain on the surface of the drill bit and the inner wall of the perforation, which is inconvenient to effectively clean, affecting the efficiency of the subsequent welding of the small household air compressor cylinder body pipe. Summary of the invention

[0004] The technical problems solved by this solution are:

[0005] How to solve the problem that the outer wall of the cylinder of a small household air compressor is relatively thin, and the downward force of the drill bit is difficult to control, which easily causes a depression around the perforation of the cylinder of the air compressor, affecting its normal use;

[0006] How to solve the problem that a small amount of metal debris is easily left on the surface of the drill bit and the inner wall of the perforation, which is inconvenient to effectively clean and affects the efficiency of subsequent welding pipelines of the cylinder body of a small household air compressor.

[0007] The purpose of the present invention can be achieved by the following technical solutions: a drilling fixture for an air compressor cylinder body, comprising a fixture table, a movable seat is slidably arranged on the top of the fixture table through a guide rail, a clamping mechanism for fixing the air compressor cylinder body is arranged on the top of the movable seat, and a positioning block is fixedly installed on the fixture table on one side of the movable seat, and a recovery mechanism for absorbing metal debris is arranged on the top of the positioning block;

[0008] The clamping mechanism includes a clamping plate fixedly connected to the movable seat, a first recovery pipe is fixedly passed through the middle of the clamping plate, the position of the input end of the first recovery pipe corresponds to the position of the inner cavity of the air compressor cylinder body, and a support unit for preventing the air compressor cylinder body from deforming is arranged above the first recovery pipe; a rubber ring is arranged on the side of the clamping plate, and the position of the rubber ring corresponds to the position of the air compressor cylinder body.

[0009] A further technical improvement of the present invention is that the support unit includes a first rotating seat fixedly connected to the clamping plate, an L-shaped rod is rotatably arranged on the first rotating seat, a flip block is fixedly installed at one end of the L-shaped rod, the top of the flip block is provided with an arc surface that fits with the inner wall of the air compressor cylinder body, and a through hole is provided in the middle of the flip block.

[0010] A further technical improvement of the present invention is that a laterally arranged cylinder is fixedly installed in the middle of the positioning block, the extended end of the cylinder movably penetrates the clamping plate and is rotatably connected to a supporting roller through a supporting frame, and the supporting roller is rollingly connected to the L-shaped rod.

[0011] A further technical improvement of the present invention is that a stop block is fixedly installed at the protruding end of the cylinder near the support frame, and a baffle is fixedly installed in the middle of the protruding end of the cylinder, and a thrust spring is elastically arranged between the baffle and the clamping plate; by controlling the protruding end of the cylinder to extend to the longest, at this time, the baffle cooperates with the thrust spring to drive the clamping plate to slide, so that the rubber ring cooperates with the rubber plate to clamp and fix the two ends of the air compressor cylinder body, the thrust spring contracts, and the protruding end of the cylinder cooperates with the supporting roller to drive the L-shaped rod to rotate, so that the flip block abuts against the inner wall of the air compressor cylinder body, and the operation of the mechanical arm and the driving motor is controlled so that the rotating shaft cooperates with the drill bit to drill a hole in the air compressor cylinder body, and the drill bit continues to penetrate into the through hole after penetrating the air compressor cylinder body. In this process, the flip block provides support around the formed perforation to prevent the perforation around the air compressor cylinder body from being concave, thereby ensuring its normal use.

[0012] A further technical improvement of the present invention is that the recovery mechanism includes a recovery box fixedly connected to the positioning block, a first feed pipe is inserted at the bottom of the recovery box, the input end of the first feed pipe is connected to the output end of the first recovery pipe through a first hose, and a blocking unit for shielding the output end of the first feed pipe is arranged inside the recovery box.

[0013] A further technical improvement of the present invention is that a connecting frame is fixedly connected to the top of the clamping plate, a second recovery pipe is fixedly inserted on the connecting frame, the input end of the second recovery pipe is arranged toward the air compressor cylinder body, a second feed pipe is inserted at the top of the recovery box, and the input end of the second feed pipe is connected to the output end of the second recovery pipe through a second hose.

[0014] A further technical improvement of the present invention is that the blocking unit includes a second rotating seat fixedly connected to the inner wall of the recovery box, a rotating plate is rotatably connected to the second rotating seat, a sealing plug is fixedly connected to one end of the rotating plate, and the positions of the second feed pipe output end and the first feed pipe output end correspond to the position of the sealing plug.

[0015] A further technical improvement of the present invention is that: an electric push rod is fixedly inserted on the top of the recovery box, the electric push rod is arranged longitudinally, and the extended end of the electric push rod is movably connected to the middle part of the rotating plate through a lever, an air pump is fixedly installed on the side wall of the recovery box, the input end of the air pump is connected to the recovery box, and a filter is provided at the input end of the air pump; during the drilling process of the drill bit, while the air pump is turned on, the extended end of the electric push rod is controlled to extend to the longest, and the output end of the first feed pipe is blocked by a sealing plug. At this time, the metal debris generated during the drilling process is absorbed into the recovery box through the second recovery pipe. After the drill bit completes drilling, the extended end of the electric push rod is controlled to shrink to the shortest, so that the sealing plug blocks the output end of the second feed pipe. Since the diameter of the drill bit is smaller than the diameter of the through hole, and the diameter of the drill bit is larger than the diameter of the rotating shaft, the rotating shaft is located in the through hole at this time, and the drill bit is located in the through hole. During the process of the first recovery pipe absorbing the metal debris located in the inner cavity of the air compressor cylinder body into the recovery box, the external airflow will pass through the gap between the rotating shaft and the through hole and the through hole. The external airflow will effectively clean the remaining metal debris on the surface of the drill bit and the inner wall of the through hole, thereby ensuring the efficiency of the welding pipeline of the cylinder body of a small household air compressor.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] When the present invention is in use, the extended end of the cylinder is controlled to extend to the longest. At this time, the baffle cooperates with the thrust spring to drive the clamping plate to slide, so that the rubber ring cooperates with the rubber plate to clamp and fix the two ends of the air compressor cylinder body. The thrust spring contracts, and the extended end of the cylinder cooperates with the supporting roller to drive the L-shaped rod to rotate, so that the flip block abuts against the inner wall of the air compressor cylinder body, and the mechanical arm and the driving motor are controlled to operate, so that the rotating shaft cooperates with the drill bit to drill a hole in the air compressor cylinder body. After the drill bit penetrates the air compressor cylinder body, it continues to penetrate into the through hole. In this process, the flip block provides support around the perforated hole to prevent the perforated hole of the air compressor cylinder body from being concave, thereby ensuring its normal use.

[0018] When the present invention is in use, during the process of drilling by the drill bit, while the air pump is turned on, the extended end of the electric push rod is controlled to extend to the longest length, and the output end of the first feed pipe is blocked by the sealing plug. At this time, the metal debris generated during the drilling process is absorbed into the recovery box through the second recovery pipe. After the drill bit completes the drilling, the extended end of the electric push rod is controlled to shrink to the shortest length, so that the sealing plug blocks the output end of the second feed pipe. Since the diameter of the drill bit is smaller than the diameter of the through hole, and the diameter of the drill bit is larger than the diameter of the rotating shaft, the rotating shaft is located in the through hole at this time, and the drill bit is located in the through hole. During the process of the first recovery pipe absorbing the metal debris located in the inner cavity of the air compressor cylinder body into the recovery box, the external airflow will pass through the gap between the rotating shaft and the through hole and the through hole, and the metal debris remaining on the surface of the drill bit and the inner wall of the through hole will be effectively cleaned by the external airflow, thereby ensuring the efficiency of the welding pipeline of the cylinder body of a small household air compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0020] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the clamping mechanism of the present invention;

[0023] Figure 4 It is a three-dimensional schematic diagram of the local structure of the clamping mechanism of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the recovery mechanism of the present invention;

[0025] Figure 6 It is a three-dimensional schematic diagram of the barrier unit structure of the present invention;

[0026] Figure 7 For the present invention Figure 2 A magnified view of the structure in the middle.

[0027] In the figure: 1, driving motor; 2, cylinder; 3, positioning block; 4, moving seat; 5, fixture table; 6, supporting seat; 7, fixing plate; 8, clamping mechanism; 9, recovery mechanism; 10, rubber plate; 11, thrust spring; 12, baffle; 13, drill bit; 14, rotating shaft; 15, mechanical arm; 801, clamping plate; 802, first recovery pipe; 803, flip block; 804, L-shaped rod; 805, first rotating seat; 806, rubber ring; 807, stopper; 808, support frame; 809, support roller; 901, second hose; 902, second feed pipe; 903, electric push rod; 904, air pump; 905, recovery box; 906, first feed pipe; 907, first hose; 908, second recovery pipe; 909, connecting frame; 910, second rotating seat; 911, lever; 912, rotating plate; 913, sealing plug. DETAILED DESCRIPTION

[0028] The technical scheme of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than 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.

[0029] See also Figure 1-Figure 7As shown, a drilling processing fixture for an air compressor cylinder body comprises a fixture table 5, a movable seat 4 is provided on the top of the fixture table 5 for sliding through a guide rail, a clamping mechanism 8 for fixing the air compressor cylinder body is provided on the top of the movable seat 4, and a positioning block 3 is fixedly installed on the fixture table 5 on one side of the movable seat 4, and a recovery mechanism 9 for absorbing metal debris is provided on the top of the positioning block 3.

[0030] See also Figure 2 and Figure 3 As shown, the above-mentioned clamping mechanism 8 includes a clamping plate 801 fixedly connected to the movable seat 4, and a first recovery pipe 802 is fixedly passed through the middle of the clamping plate 801. The position of the input end of the first recovery pipe 802 corresponds to the position of the inner cavity of the air compressor cylinder body, and a support unit for preventing the air compressor cylinder body from deforming is arranged above the first recovery pipe 802.

[0031] See also Figure 3 As shown, a rubber ring 806 is disposed on the side of the clamping plate 801, and the position of the rubber ring 806 corresponds to the position of the air compressor cylinder body.

[0032] See also Figure 3 and Figure 4 As shown, the above-mentioned supporting unit includes a first rotating seat 805 fixedly connected to the clamping plate 801, an L-shaped rod 804 is rotatably arranged on the first rotating seat 805, a flip block 803 is fixedly installed at one end of the L-shaped rod 804, an arc surface that fits with the inner wall of the air compressor cylinder body is opened on the top of the flip block 803, and a through hole is opened in the middle of the flip block 803.

[0033] See also Figure 3 and Figure 4 As shown, a laterally arranged cylinder 2 is fixedly installed in the middle of the positioning block 3, and the protruding end of the cylinder 2 movably penetrates the clamping plate 801 and is rotatably connected to a supporting roller 809 through a supporting frame 808, and the supporting roller 809 is rollingly connected to the L-shaped rod 804.

[0034] See also Figure 3 and Figure 4As shown, a stopper 807 is fixedly installed at the extended end of the cylinder 2 near the support frame 808, and a baffle 12 is fixedly installed at the middle of the extended end of the cylinder 2, and a thrust spring 11 is elastically arranged between the baffle 12 and the clamping plate 801; by controlling the extended end of the cylinder 2 to be extended to the longest, at this time, the baffle 12 cooperates with the thrust spring 11 to drive the clamping plate 801 to slide, so that the rubber ring 806 cooperates with the rubber plate 10 to clamp and fix the two ends of the air compressor cylinder body, and the thrust spring 11 contracts. The extended end of the cylinder 2 cooperates with the support roller 809 to drive the L-shaped rod 804 to rotate, so that the flip block 803 abuts against the inner wall of the air compressor cylinder body, and controls the operation of the mechanical arm 15 and the drive motor 1, so that the rotating shaft 14 cooperates with the drill bit 13 to drill a hole in the air compressor cylinder body. After the drill bit 13 penetrates the air compressor cylinder body, it continues to penetrate into the through hole. In this process, the flip block 803 provides support around the perforation to prevent the air compressor cylinder body from being concave around the perforation, thereby ensuring its normal use.

[0035] See also Figure 1 As shown, the above-mentioned recovery mechanism 9 includes a recovery box 905 fixedly connected to the positioning block 3, a first feed pipe 906 is inserted at the bottom of the recovery box 905, the input end of the first feed pipe 906 is connected to the output end of the first recovery pipe 802 through a first hose 907, and a blocking unit for shielding the output end of the first feed pipe 906 is arranged inside the recovery box 905.

[0036] See also Figure 2 and Figure 5 As shown, the top of the above-mentioned clamping plate 801 is fixedly connected with a connecting frame 909, and a second recovery pipe 908 is fixedly inserted on the connecting frame 909. The input end of the second recovery pipe 908 is arranged toward the air compressor cylinder body. A second feed pipe 902 is inserted at the top of the recovery box 905, and the input end of the second feed pipe 902 is connected to the output end of the second recovery pipe 908 through a second hose 901.

[0037] See also Figure 5 and Figure 6 As shown, the above-mentioned blocking unit includes a second rotating seat 910 fixedly connected to the inner wall of the recovery box 905, and a rotating plate 912 is rotatably connected to the second rotating seat 910, and a sealing plug 913 is fixedly connected to one end of the rotating plate 912, and the positions of the output end of the second feed pipe 902 and the output end of the first feed pipe 906 correspond to the position of the sealing plug 913.

[0038] See also Figure 5 and Figure 6As shown, an electric push rod 903 is fixedly inserted on the top of the above-mentioned recovery box 905, and the electric push rod 903 is arranged longitudinally, and the protruding end of the electric push rod 903 is movably connected to the middle part of the rotating plate 912 through a lever 911, and an air pump 904 is fixedly installed on the side wall of the recovery box 905, and the input end of the air pump 904 is connected to the recovery box 905, and a filter is provided at the input end of the air pump 904; during the drilling process of the drill bit 13, when the air pump 904 is turned on, the protruding end of the electric push rod 903 is controlled to extend to the longest, and the output end of the first feed pipe 906 is blocked by the sealing plug 913. At this time, the metal debris generated during the drilling process is absorbed into the recovery box through the second recovery pipe 908. In 905, after the drill bit 13 completes drilling, the extended end of the electric push rod 903 is controlled to shrink to the shortest, so that the sealing plug 913 blocks the output end of the second feed pipe 902. Since the diameter of the drill bit 13 is smaller than the diameter of the through hole, and the diameter of the drill bit 13 is larger than the diameter of the rotating shaft 14, the rotating shaft 14 is located in the through hole at this time, and the drill bit 13 is located in the through hole. In the process of the first recovery pipe 802 absorbing the metal debris located in the inner cavity of the air compressor cylinder body into the recovery box 905, the external airflow will pass through the gap between the rotating shaft 14 and the through hole and the through hole. The external airflow will effectively clean the remaining metal debris on the surface of the drill bit 13 and the inner wall of the through hole, thereby ensuring the efficiency of the welding pipeline of the cylinder body of a small household air compressor.

[0039] See also Figure 1 and Figure 2 As shown, a fixing plate 7 is fixedly connected to the top of the fixture table 5 on one side away from the positioning block 3, a supporting seat 6 for placing the air compressor cylinder body is arranged on the fixture table 5 between the fixing plate 7 and the movable seat 4, and a rubber plate 10 is arranged on the side of the fixing plate 7 facing the supporting seat 6.

[0040] See also Figure 2 and Figure 7 As shown, a mechanical arm 15 is arranged at the rear of the above-mentioned support seat 6, and a driving motor 1 is movably arranged on the mechanical arm 15. The output end of the driving motor 1 is fixedly connected with a rotating shaft 14, and the bottom end of the rotating shaft 14 is fixedly connected with a drill bit 13. The diameter of the drill bit 13 is larger than the diameter of the rotating shaft 14, and the position of the drill bit 13 corresponds to the position of the through hole, and the diameter of the drill bit 13 is smaller than the diameter of the through hole.

[0041] Working principle: When the present invention is used, first, Figure 1 and Figure 2 As shown, the air compressor cylinder body is placed on the support seat 6, and the extended end of the cylinder 2 is controlled to extend to a set length. At this time, as shown in FIG. Figure 2 and Figure 3As shown, the baffle plate 12 cooperates with the thrust spring 11 to drive the clamping plate 801 to slide, so that the rubber ring 806 cooperates with the rubber plate 10 to clamp and fix the two ends of the air compressor cylinder body, and then the extended end of the cylinder 2 is controlled to extend to the longest, so that the thrust spring 11 is contracted, as shown in FIG. Figure 2-Figure 4 As shown, the extended end of the cylinder 2 cooperates with the supporting roller 809 to drive the L-shaped rod 804 to rotate, so that the flip block 803 abuts against the inner wall of the air compressor cylinder body, and the mechanical arm 15 and the driving motor 1 are controlled to operate, so that the rotating shaft 14 cooperates with the drill bit 13 to drill the air compressor cylinder body. After the drill bit 13 penetrates the air compressor cylinder body, it continues to penetrate into the through hole. In this process, the flip block 803 provides support around the perforation to prevent the perforation of the air compressor cylinder body from being concave, thereby ensuring its normal use. In the process of drilling with the drill bit 13, as shown in FIG. Figure 2 , Figure 5 and Figure 6 As shown, while the air pump 904 is turned on, the extended end of the electric push rod 903 is controlled to be extended to the longest, and the output end of the first feed pipe 906 is blocked by the sealing plug 913. At this time, the metal debris generated during the drilling process is absorbed into the recovery box 905 through the second recovery pipe 908. After the drill bit 13 completes the drilling, the extended end of the electric push rod 903 is controlled to be contracted to the shortest, so that the sealing plug 913 blocks the output end of the second feed pipe 902. Figure 5 and Figure 7 As shown, since the diameter of the drill bit 13 is smaller than the diameter of the through hole, and the diameter of the drill bit 13 is larger than the diameter of the rotating shaft 14, at this time the rotating shaft 14 is located in the through hole, and the drill bit 13 is located in the through hole. In the process of the first recovery pipe 802 absorbing the metal debris located in the inner cavity of the air compressor cylinder body into the recovery box 905, the external airflow will pass through the gap between the rotating shaft 14 and the through hole and the through hole. The external airflow will effectively clean the remaining metal debris on the surface of the drill bit 13 and the inner wall of the through hole, thereby ensuring the efficiency of the welding pipeline of the cylinder body of a small household air compressor.

[0042] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A drilling fixture for an air compressor cylinder body, comprising a fixture table (5), a movable seat (4) being slidably provided on the top of the fixture table (5), characterized in that: A clamping mechanism (8) for fixing the cylinder body of the air compressor is arranged on the top of the movable seat (4), and a positioning block (3) is fixedly mounted on the fixture table (5) on one side of the movable seat (4), and a recovery mechanism (9) for absorbing metal debris is arranged on the top of the positioning block (3); The clamping mechanism (8) comprises a clamping plate (801) fixedly connected to the movable seat (4), a first recovery pipe (802) fixedly passing through the middle of the clamping plate (801), the position of the input end of the first recovery pipe (802) corresponds to the position of the inner cavity of the air compressor cylinder body, and a support unit for preventing the air compressor cylinder body from deforming is arranged above the first recovery pipe (802), the support unit comprises an L-shaped rod (804) rotatably connected to the clamping plate (801), a flip block (803) is fixedly installed at one end of the L-shaped rod (804), the top of the flip block (803) is provided with an arc surface that fits the inner wall of the air compressor cylinder body, and a through hole is provided in the middle of the flip block (803).

2. The drilling fixture for an air compressor cylinder body according to claim 1, characterized in that: A cylinder (2) is fixedly mounted in the middle of the positioning block (3); an extended end of the cylinder (2) movably penetrates the clamping plate (801) and is rotatably connected to a supporting roller (809); and the supporting roller (809) is rollingly connected to the L-shaped rod (804).

3. The drilling fixture for an air compressor cylinder body according to claim 2, characterized in that: A stopper (807) is fixedly mounted on the extended end of the cylinder (2) near the support frame (808), and a baffle (12) is fixedly mounted on the middle of the extended end of the cylinder (2), and a thrust spring (11) is elastically arranged between the baffle (12) and the clamping plate (801).

4. The drilling fixture for an air compressor cylinder body according to claim 1, characterized in that: The recovery mechanism (9) comprises a recovery box (905) fixedly connected to the positioning block (3); a first feed pipe (906) is inserted into the bottom of the recovery box (905); an input end of the first feed pipe (906) is connected to an output end of a first recovery pipe (802) via a first hose (907); and a blocking unit for shielding the output end of the first feed pipe (906) is provided inside the recovery box (905).

5. The drilling fixture for an air compressor cylinder body according to claim 4, characterized in that: A connecting frame (909) is fixedly connected to the top of the clamping plate (801), and a second recovery pipe (908) is fixedly inserted on the connecting frame (909). The input end of the second recovery pipe (908) is arranged toward the cylinder body of the air compressor. A second feed pipe (902) is inserted at the top of the recovery box (905), and the input end of the second feed pipe (902) is connected to the output end of the second recovery pipe (908) through a second hose (901).

6. The drilling fixture for an air compressor cylinder body according to claim 5, characterized in that: The blocking unit comprises a second rotating seat (910) fixedly connected to the inner wall of the recovery box (905), a rotating plate (912) being rotatably connected to the second rotating seat (910), a sealing plug (913) being fixedly connected to one end of the rotating plate (912), and the positions of the output end of the second feed pipe (902) and the output end of the first feed pipe (906) both correspond to the position of the sealing plug (913).

7. The drilling fixture for an air compressor cylinder body according to claim 6, characterized in that: An electric push rod (903) is fixedly inserted on the top of the recycling box (905), and the protruding end of the electric push rod (903) is movably connected to the middle of the rotating plate (912). An air pump (904) is fixedly installed on the side wall of the recycling box (905), and the input end of the air pump (904) is connected to the recycling box (905).

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