A deep-sea cavity pressure-resistant detection robot

Abstract

The application provides a deep-sea cavity pressure-resistant detection robot, and relates to the technical field of pressure-resistant detection, which comprises a device shell, a cavity detection groove and a water storage groove are respectively arranged at the upper and lower ends of the inside of the device shell, the cavity detection groove is arranged above the water storage groove, a partition plate is arranged between the cavity detection groove and the water storage groove, a plurality of drain holes are arranged on one side of the partition plate, and the drain holes are communicated with the water storage groove; the liquid in the water storage groove is transferred into the pressurizing channel by starting the second conveying pump, then the liquid is injected into the one-way valve and the second conveying pump, when the liquid is transferred into the one-way valve, the liquid is accumulated in the cavity detection groove to realize water filling and pressurizing, and then detection can be carried out, a pressure sensor is arranged in the application during the detection process to directly obtain the current pressure, and compared with the existing device, the application can simulate the pressure in the deep sea to comprehensively press the cavity surface and realize accurate detection.

Description

Technical Field

[0001] This invention relates to the field of pressure resistance testing technology, and more specifically, to a deep-sea cavity pressure resistance testing robot. Background Technology

[0002] To enable operations in the deep sea, it is necessary to produce hollow objects that allow personnel to operate within them. After the cavity is manufactured, its pressure resistance in the deep sea needs to be tested to ensure safety during later use. For example, application number CN202121529876.7 describes a pressure resistance testing device, including a base plate, a support, and a placement plate. The support and placement plate are fixed above the base plate. An electric telescopic rod is fixedly connected to the bottom of the support, and a vertical rod is connected to the telescopic end of the electric telescopic rod. A pressure plate is provided at the bottom of the vertical rod. A placement groove suitable for placing an air cushion is provided on the top of the placement plate. The telescopic end of the electric telescopic rod has a cavity, and one end of the vertical rod is placed inside the cavity. A first elastic element is provided inside the cavity. The lower end of the first elastic element is connected to the vertical rod, and its upper end is connected to a pressure sensor. The pressure sensor is adapted to transmit the pressure value fed back by the first elastic element to an external controller. The external controller is connected to the electric telescopic rod to record the number of times the electric telescopic rod extends and retracts. The aforementioned pressure resistance testing device, by combining the number of expansion and contraction cycles and the feedback pressure value changes, accurately calculates the limit of the number of pressure cycles, and can clearly understand the pressure resistance performance of the air cushion;

[0003] However, existing pressure testing machines generally use devices such as hydraulic rods to directly compress the cavity to test its pressure resistance. But when testing cavities used in deep-sea operations, the cavity is placed in a deep-sea environment, causing the entire outer surface of the cavity to be subjected to pressure. If existing pressure testing machines are used directly, they cannot simulate the pressure in the deep sea, and thus the test data cannot be used in deep-sea operations. Therefore, this application designs a testing machine that can simulate the full pressure applied in the deep sea. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a deep-sea cavity pressure testing robot, which solves the problem that existing pressure testing machines cannot perform testing for the needs of the deep-sea environment.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A deep-sea cavity pressure testing robot includes a housing. The upper and lower ends of the housing are respectively provided with a cavity testing slot and a water storage tank. The cavity testing slot is located above the water storage tank. A partition plate is provided between the cavity testing slot and the water storage tank. A plurality of drainage holes are provided on one side of the partition plate. The drainage holes are connected to the water storage tank.

[0007] The device housing is equipped with sealing components to ensure stable detection on the upper and lower sides of the cavity detection tank. A pressure boosting component to simulate pressure is provided between the cavity detection tank and the water storage tank. A drive component to control the sealing component is provided on one side of the sealing component. A motor is provided on the outside of the device housing.

[0008] Preferably, the pressurization component includes a pressurization channel, which is located on one side of the water storage tank and is interconnected with each other. A branch channel is provided at the upper end of the pressurization channel, and a first delivery pump and a second delivery pump are respectively connected to the two ends of the branch channel. A one-way valve is installed at the other end of the branch channel and is connected to the cavity detection tank.

[0009] Preferably, the first delivery pump outlet is connected to a second connecting pipe at both ends, and a falling channel is fixedly connected to one end of the second connecting pipe on both sides. A first connecting pipe is connected to one end of the falling channel on both sides. Each first connecting pipe extends into the cavity detection groove, and a side bladder is fixedly connected to one end of each first connecting pipe. The side bladders on both sides are located on both sides of the inner wall of the cavity detection groove.

[0010] Preferably, the other end of the falling channels on both sides is connected to a pressure reducing channel, and the pressure reducing channels on both sides are respectively connected to the water storage tank. A control valve is fixedly installed at one end of each pressure reducing channel on both sides.

[0011] Preferably, the upper end of the device housing is provided with a slot for insertion, and one end of the water storage tank is provided with a water inlet for subsequent water replenishment.

[0012] Preferably, the sealing component includes a movable groove and a mating groove. Each set of movable grooves and mating grooves is respectively opened on the upper and lower sides of the cavity detection groove. The inner walls of the movable groove and the mating groove are respectively provided with mating sliding grooves. A movable baffle is provided inside the movable groove, and the two sides of the movable baffle slide in conjunction with the mating sliding groove.

[0013] Preferably, the edge of the slot is integrally provided with a mating strip, and a compression airbag is installed at one end of each of the two movable baffles. Transfer holes are provided inside the two movable baffles. The upper transfer hole has a set of mounting slots, and the lower transfer hole has several sets of mounting slots. A first expansion airbag is provided inside each set of mounting slots, and each first expansion airbag is connected to the corresponding transfer hole opening.

[0014] Preferably, one side of each of the two transfer holes is integrally provided with an extension hole, and another set of mounting slots is provided on the outside of each extension hole, and a second expansion airbag is provided inside the mounting slot.

[0015] The first and second expansion airbags on the upper side are sealed and fitted with the mating strip, and the first and second expansion airbags on the lower side are sealed and fitted with the drain hole.

[0016] Preferably, the drive assembly includes two drive screws, each of which has a threaded hole through one side of its movable baffle plate. Both drive screws are rotatably mounted in a mating groove and are threadedly engaged with the threaded hole.

[0017] Preferably, each of the drive screws has a sealing groove on one side, a sealing disc is rotatably installed inside the sealing groove, a transmission groove is provided on one side of the sealing disc, a main transmission rod and a secondary transmission rod are respectively installed at the upper and lower ends inside the transmission groove, the outer side of the main transmission rod is fixedly connected to the motor output end, and a transmission belt is provided between the main transmission rod and the secondary transmission rod.

[0018] The main drive rod and the secondary drive rod each have a first slot at one end, and the drive screw has a second slot at one end. The sealing turntable has a locking block integrated in the middle, and the locking blocks on both sides cooperate with the first slot and the second slot, respectively.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In order to improve the sealing effect and avoid deviation in the test results due to poor sealing, the movable baffle moves into the mating groove. The squeezing airbag will contact the mating groove and squeeze. Under the transmission of the transfer hole and the extension hole, the first expansion airbag and the second expansion airbag will receive the medium and squeeze outward. The upper first expansion airbag and the second expansion airbag will be sealed and fitted with the mating strip at the edge of the groove, and the lower first expansion airbag and the second expansion airbag will be sealed and fitted with the drain hole. Thus, this application can ensure stable inspection operation while allowing for quick removal and drainage.

[0021] 2. When the liquid is transferred to the one-way valve, it will accumulate in the cavity detection tank to achieve water filling and pressurization. In order to more flexibly detect objects of different sizes, this application controls the second delivery pump to transfer the liquid sequentially from the second connecting pipe, the falling channel, and the first connecting pipe to the side bladder. This allows the volume of the two side bladders to be pre-controlled, making it easy to adapt to different sizes and thus reducing the water filling time during detection. In order to fine-tune the internal pressure, the control valves at different positions on both sides are controlled so that the liquid inside the side bladder at the corresponding position flows back to the water storage tank through the decompression channel, thereby achieving decompression treatment. Conversely, the control valve is closed and the second delivery pump is started again to achieve micro-pressurization operation.

[0022] 3. This invention transfers the liquid inside the water storage tank to the pressurization channel by starting the second delivery pump. Then, the pressurization channel injects the liquid into the one-way valve and the second delivery pump respectively. When the liquid is transferred into the one-way valve, it will accumulate in the cavity detection tank to achieve water filling and pressurization, which can be used for detection. During the detection process, a pressure sensor can be directly installed inside this application to obtain the current pressure. Compared with the existing equipment, this application simulates the pressure in the deep sea to apply pressure to the cavity surface to achieve accurate detection.

[0023] 4. In order to allow each first and second expansion airbag to reset after use, when the movable baffles on both sides reset, they will fit with the mating strip, so that the air inside the first and second expansion airbags will flow back into the compression airbag, enabling the next test. The lower first and second expansion airbags will directly fit with the partition plate to reset. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0025] Figure 2 This is a top view of the structure of the present invention;

[0026] Figure 3 yes Figure 2 Schematic diagram of the three-dimensional cross-section at point AA;

[0027] Figure 4 yes Figure 2 Schematic diagram of the three-dimensional cross-section at point BB;

[0028] Figure 5 yes Figure 4 Enlarged structural diagram at point a;

[0029] Figure 6 This is a front view structural diagram of the present invention;

[0030] Figure 7 Figure 6 Schematic diagram of the three-dimensional structure of the cross-section at the CC point;

[0031] Figure 8 Figure 6 Schematic diagram of the three-dimensional cross-section at point DD;

[0032] Figure 9 This is a side view of the structure of the present invention;

[0033] Figure 10 yes Figure 9 Schematic diagram of the three-dimensional cross-section of the EE section;

[0034] Figure 11 yes Figure 10 Enlarged structural diagram at point b;

[0035] Figure 12 yes Figure 10 Enlarged structural diagram at point c.

[0036] In the diagram: 1. Equipment housing; 101. Placement tank; 102. Water inlet; 2. Pressurization assembly; 201. Side bladder; 202. First connecting pipe; 203. Falling channel; 204. Pressure reducing channel; 205. Control valve; 206. Pressurization channel; 207. Branch channel; 208. First delivery pump; 209. Second delivery pump; 210. Check valve; 211. Second connecting pipe; 3. Sealing assembly; 301. Movable slot; 302. Movable baffle; 3021. Compression airbag; 3022. Transfer hole; 3023. Mounting slot; 3024 1. First expansion airbag; 3025. Extension hole; 3026. Second expansion airbag; 3027. Threaded hole; 303. Mating groove; 304. Mating slide groove; 4. Motor; 5. Cavity detection groove; 6. Water storage tank; 7. Divider plate; 8. Drive assembly; 801. Drive screw; 8011. Second slot; 802. Transmission groove; 803. Main transmission rod; 804. Transmission belt; 805. Secondary transmission rod; 806. First slot; 807. Sealing rotary groove; 808. Sealing turntable; 8081. Clip and block; 9. Drain hole; 10. Mating strip. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0038] like Figures 1 to 12 As shown, a deep-sea cavity pressure testing robot includes a housing 1. The upper and lower ends of the housing 1 are respectively provided with a cavity testing groove 5 and a water storage tank 6. The cavity testing groove 5 is located above the water storage tank 6. A partition plate 7 is provided between the cavity testing groove 5 and the water storage tank 6. A plurality of drainage holes 9 are provided on one side of the partition plate 7. The drainage holes 9 are connected to the water storage tank 6.

[0039] Inside the equipment housing 1, on the upper and lower sides of the cavity detection tank 5, there are sealing components 3 to ensure stable detection. Between the cavity detection tank 5 and the water storage tank 6, there is a pressure boosting component 2 to simulate pressure. On one side of the sealing component 3, there is a drive component 8 to control the sealing component 3. On the outside of the equipment housing 1, there is a motor 4.

[0040] In this embodiment, the pressurization component 2 includes a pressurization channel 206, which is located on one side of the water storage tank 6 and is interconnected. A branch channel 207 is provided at the upper end of the pressurization channel 206. A first delivery pump 208 and a second delivery pump 209 are respectively connected to the two ends of the branch channel 207. A one-way valve 210 is installed at the other end of the branch channel 207 and is connected to the cavity detection slot 5. The water supply control of the side bladder 201 is realized by the second delivery pump 209, and the liquid can be transferred to the upper part by the first delivery pump 208.

[0041] The outlet of the first delivery pump 208 is connected to the second connecting pipe 211 at both ends. One end of the second connecting pipe 211 on both sides is fixedly connected to the falling channel 203. One end of the falling channel 203 on both sides is connected to the first connecting pipe 202. Each first connecting pipe 202 extends into the cavity detection groove 5. One end of each first connecting pipe 202 is fixedly connected to the side bladder 201. The side bladders 201 on both sides are located on both sides of the inner wall of the cavity detection groove 5.

[0042] The other end of each of the two drop channels 203 is connected to a pressure-reducing channel 204, which is connected to the water storage tank 6. A control valve 205 is fixedly installed at one end of each pressure-reducing channel 204. By controlling the control valve 205, it is possible to adjust whether liquid flows into the water storage tank 6 through the corresponding pressure-reducing channel 204, thereby controlling the size of the unilateral lateral bladder 201 and allowing for fine adjustments by personnel, thus providing greater flexibility.

[0043] It should be noted that the upper end of the equipment housing 1 is provided with a slot 101, and one end of the water storage tank 6 is provided with a water inlet 102 for later water replenishment.

[0044] In a specific configuration, the sealing component 3 includes a movable groove 301 and a mating groove 303. Each set of movable grooves 301 and mating grooves 303 is respectively opened on the upper and lower sides of the cavity detection groove 5. The inner walls of the movable grooves 301 and mating grooves 303 are respectively provided with mating sliding grooves 304. A movable baffle 302 is provided inside the movable groove 301, and the two sides of the movable baffle 302 slide and engage with the mating sliding grooves 304.

[0045] Among them, the edge of the slot 101 is integrally provided with a mating strip 10, and one end of each of the two movable baffles 302 is equipped with a compression airbag 3021. The two movable baffles 302 are provided with transfer holes 3022. The upper transfer hole 3022 is provided with a set of mounting slots 3023, and the lower transfer hole 3022 is provided with several sets of mounting slots 3023. Each set of mounting slots 3023 is provided with a first expansion airbag 3024. Each first expansion airbag 3024 is connected to the opening of the corresponding transfer hole 3022.

[0046] The two transfer holes 3022 are integrated with an extension hole 3025 on one side. Each extension hole 3025 has another set of mounting grooves 3023 on the outside, and a second expansion airbag 3026 is provided inside the mounting groove 3023.

[0047] The upper first expansion airbag 3024 and second expansion airbag 3026 are sealed and fitted with the mating strip 10, and the lower first expansion airbag 3024 and second expansion airbag 3026 are sealed and fitted with the drain hole 9. In order to allow each first expansion airbag 3024 and second expansion airbag 3026 to reset after use, when the movable baffles 302 on both sides reset, they will fit with the mating strip 10, so that the air inside the first expansion airbag 3024 and second expansion airbag 3026 will flow back into the compression airbag 3021 for the next test. The lower first expansion airbag 3024 and second expansion airbag 3026 will directly fit with the partition plate 7 to reset.

[0048] It is understood that in this application, the drive assembly 8 includes two drive screws 801, and each movable baffle 302 has a threaded hole 3027 through one side of its body. The bodies of the two drive screws 801 are rotatably disposed in the mating groove 304 and the bodies of the drive screws 801 are threadedly engaged with the threaded holes 3027.

[0049] Each drive screw 801 has a sealing groove 807 on one side, and a sealing disc 808 is rotatably installed inside the sealing groove 807. A transmission groove 802 is provided on one side of the sealing disc 808. A main transmission rod 803 and a secondary transmission rod 805 are respectively installed at the upper and lower ends inside the transmission groove 802. The outer side of the main transmission rod 803 is fixedly connected to the output end of the motor 4. A transmission belt 804 is provided between the main transmission rod 803 and the secondary transmission rod 805.

[0050] The main drive rod 803 and the secondary drive rod 805 each have a first slot 806 at one end, and the drive screw 801 has a second slot 8011 at one end. The sealing turntable 808 has a card and block 8081 integrated in the middle, and the card and block 8081 on both sides cooperate with the first slot 806 and the second slot 8011 respectively.

[0051] The working principle of a deep-sea cavity pressure testing robot:

[0052] In use, the cavity to be tested is first placed from the insertion slot 101 into the cavity testing slot 5. Then, the motor 4 is started, which drives the main transmission rod 803 to rotate. Then, the secondary transmission rod 805 is driven to rotate synchronously under the drive of the transmission belt 804. Then, the connection between the sealing turntable 808 and the first slot 806 and the second slot 8011 drives the corresponding drive screw 801 to rotate. When the drive screw 801 rotates, the threaded engagement between the threaded hole 3027 and the drive screw 801, and the limiting of the movable baffle 302 by the sliding groove 304, causes the movable baffle 302 to move in the movable slot 301 and seal the insertion slot 101 and the drain hole 9.

[0053] To improve the sealing effect and avoid deviations in the test results due to poor sealing, the movable baffle 302 moves into the mating groove 303. The compression airbag 3021 contacts the mating groove 303 and is compressed. Under the transmission of the transfer hole 3022 and the extension hole 3025, the first expansion airbag 3024 and the second expansion airbag 3026 receive the medium and are squeezed outward. The upper first expansion airbag 3024 and the second expansion airbag 3026 are sealed and fitted with the mating strip 10 at the edge of the insertion groove 101, and the lower first expansion airbag 3024 and the second expansion airbag 3026 are sealed and fitted with the drain hole 9. This allows the application to ensure stable inspection operation while allowing for quick removal and drainage.

[0054] After being shut down, the second delivery pump 209 is started to transfer the liquid inside the water storage tank 6 to the pressurization channel 206. Then the pressurization channel 206 injects the liquid into the one-way valve 210 and the second delivery pump 209 respectively. By controlling the second delivery pump 209, the pressurization channel 206 can prevent the liquid from being transferred upward.

[0055] When the liquid is transferred to the one-way valve 210, it accumulates in the cavity detection tank 5 to achieve water filling and pressurization. To more flexibly detect objects of different sizes, this application controls the second delivery pump 209 to transfer the liquid sequentially from the second connecting pipe 211, the falling channel 203, and the first connecting pipe 202 to the side bladder 201. This allows the volume of the two side bladders 201 to be pre-controlled, making it easy to adapt to different sizes and reducing the water filling time during detection. In order to fine-tune the internal pressure, the control valves 205 at different positions on both sides are controlled so that the liquid inside the side bladder 201 at the corresponding position flows back to the water storage tank 6 through the decompression channel 204, thereby achieving decompression treatment. Conversely, the control valves 205 are closed and the second delivery pump 209 is started again to achieve micro-pressurization operation.

[0056] During the detection process, an observation window can be set in the device housing 1 or the internal water level can be detected to see if it suddenly decreases. Alternatively, a pressure sensor can be set inside the device to directly obtain the current pressure and determine the maximum pressure resistance value that the cavity can withstand, thus achieving accurate detection. Compared with existing devices, this application can simulate the pressure in the deep sea to apply pressure to the cavity surface, making it more suitable for the detection of deep-sea items.

[0057] After the test is completed, the motor 4 is restarted and driven in the opposite direction, so that the movable baffle 302 is reset and the insertion tank 101 and the drain hole 9 are exposed. Then the liquid inside the cavity test tank 5 will be transferred to the water storage tank 6 through multiple drain holes 9, so that personnel are not affected when taking out the object. The recovery of the liquid allows the application to quickly carry out the next round of testing.

[0058] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A deep-sea cavity pressure testing robot, comprising a device housing (1), characterized in that: The equipment housing (1) has a cavity detection groove (5) and a water storage tank (6) respectively opened at the upper and lower ends. The cavity detection groove (5) is located above the water storage tank (6). A partition plate (7) is provided between the cavity detection groove (5) and the water storage tank (6). A plurality of drainage holes (9) are opened on one side of the partition plate (7). The drainage holes (9) are connected to the water storage tank (6). A loading groove (101) is opened through the upper end of the equipment housing (1). A water inlet (102) for later water replenishment is provided at one end of the water storage tank (6). The equipment housing (1) is provided with sealing components (3) for ensuring stable detection on the upper and lower sides of the cavity detection tank (5). A pressure boosting component (2) for simulating pressure is provided between the cavity detection tank (5) and the water storage tank (6). A drive component (8) for controlling the sealing component (3) is provided on one side of the sealing component (3). A motor (4) is provided on the outside of the equipment housing (1). The sealing component (3) includes a movable groove (301) and a mating groove (303). Each set of movable grooves (301) and mating grooves (303) is respectively opened on the upper and lower sides of the cavity detection groove (5). The inner walls of the movable groove (301) and the mating groove (303) are respectively provided with mating sliding grooves (304). The movable groove (301) is provided with a movable baffle (302) inside. The two sides of the movable baffle (302) slide and engage with the mating sliding grooves (304). The insertion slot (101) has an integrally formed mating strip (10) at the edge of the opening. Each of the two movable baffles (302) has a compression airbag (3021) installed at one end. Each of the two movable baffles (302) has a transfer hole (3022) inside. The upper transfer hole (3022) has a set of mounting slots (3023), and the lower transfer hole (3022) has several sets of mounting slots (3023). Each set of mounting slots (3023) has a first expansion airbag (3024) inside. Each first expansion airbag (3024) is connected to the opening of the corresponding transfer hole (3022). An extension hole (3025) is integrally formed on one side of the transfer hole (3022) on both sides. Another set of mounting grooves (3023) is formed on the outside of each extension hole (3025), and a second expansion airbag (3026) is provided inside the mounting groove (3023). The first expansion airbag (3024) and the second expansion airbag (3026) on the upper side are sealed and fitted with the mating strip (10), and the first expansion airbag (3024) and the second expansion airbag (3026) on the lower side are sealed and fitted with the drain hole (9).

2. The deep-sea cavity pressure testing robot according to claim 1, characterized in that: The pressurization assembly (2) includes a pressurization channel (206), which is located on one side of the water storage tank (6) and interconnected with each other. A branch channel (207) is provided at the upper end of the pressurization channel (206). A first delivery pump (208) and a second delivery pump (209) are respectively connected to the two ends of the branch channel (207). A one-way valve (210) is installed at the other end of the branch channel (207) and is connected to the cavity detection groove (5).

3. The deep-sea cavity pressure testing robot according to claim 2, characterized in that: The first delivery pump (208) has a second connecting pipe (211) connected to both ends of its outlet. A falling channel (203) is fixedly connected to one end of the second connecting pipe (211) on both sides. A first connecting pipe (202) is connected to one end of the falling channel (203) on both sides. Each first connecting pipe (202) extends into the cavity detection groove (5). A side bladder (201) is fixedly connected to one end of each first connecting pipe (202). The side bladders (201) on both sides are located on both sides of the inner wall of the cavity detection groove (5).

4. The deep-sea cavity pressure testing robot according to claim 3, characterized in that: The other end of the two falling channels (203) is connected to a pressure reducing channel (204), and the two pressure reducing channels (204) are respectively connected to the water storage tank (6). A control valve (205) is fixedly installed at one end of each of the two pressure reducing channels (204).

5. The deep-sea cavity pressure testing robot according to claim 1, characterized in that: The drive assembly (8) includes two drive screws (801), and each of the movable baffles (302) has a threaded hole (3027) through one side of its body. The bodies of the two drive screws (801) are rotatably arranged in the mating groove (304) and the bodies of the drive screws (801) are threadedly engaged with the threaded holes (3027).

6. The deep-sea cavity pressure testing robot according to claim 5, characterized in that: Each of the drive screws (801) has a sealing groove (807) on one side, and a sealing disc (808) is rotatably installed inside the sealing groove (807). A transmission groove (802) is provided on one side of the sealing disc (808). A main transmission rod (803) and a secondary transmission rod (805) are respectively installed at the upper and lower ends inside the transmission groove (802). The outer side of the main transmission rod (803) is fixedly connected to the output end of the motor (4). A transmission belt (804) is provided between the rods of the main transmission rod (803) and the secondary transmission rod (805). The main drive rod (803) and the secondary drive rod (805) each have a first slot (806) at one end, and the drive screw (801) has a second slot (8011) at one end. The sealing turntable (808) has a card and block (8081) integrated in the middle, and the card and block (8081) on both sides cooperate with the first slot (806) and the second slot (8011) respectively.

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