Waterproof device that can increase the service life of the motor

Abstract

The present invention relates to the technical field of motor waterproofing, and discloses a waterproof device capable of increasing the service life of a motor, comprising a protective box, a base fixedly connected to the bottom of the protective box, a motor body arranged in the protective box, a rotating shaft fixedly connected to the right side of the motor body, a mounting mechanism arranged in the protective box at the bottom of the rotating shaft, and a positioning mechanism arranged in the mounting mechanism. The waterproof device capable of increasing the service life of a motor prevents external moisture from entering the protective box at the connection between the right fixed arc frame and the rotating shaft through the provided mounting mechanism, while the fixed arc frames on the upper and lower sides are sleeved on the outer ring of the rotating shaft through the arc-shaped rubber strips provided on the inner side to seal the rotating shaft, which does not affect the rotation of the rotating shaft, and prevents the motor from directly contacting external moisture, thereby avoiding a short circuit of the motor due to water, and also preventing the motor housing from being corroded by contact with water vapor, thereby increasing the service life of the motor.

Description

[0001] This application is a divisional application of the invention patent application with the application date of "March 6, 2024", application number "202410255205.8", and patent name "A waterproof device for increasing the service life of a motor". Technical Field

[0002] The present invention relates to the technical field of motor waterproofing, and in particular to a waterproofing device capable of increasing the service life of a motor. Background Art

[0003] Motors are currently being pursued for their high environmental adaptability, requiring them to operate reliably in environments such as rain and splashing water. Water ingress into the motor can degrade its insulation and reduce its electrical strength, leading to a short circuit and malfunction. The motor has external electrical connections, and in wet environments, this connection point is a critical point for protection and requires a secure seal. Otherwise, water can enter the motor through the mating surfaces between the housing, end cap, and housing, potentially damaging it.

[0004] According to the patent website's publication of "A Motor Waterproof Device (Publication Number: CN 210468966 U; Application Number: 201920935521.4)", the above application addresses the following issues: "Except for certain waterproof motors, most motors require waterproof protection. Therefore, when used on rainy days or in places with large amounts of water, a motor waterproof device is required. However, the current motor waterproof devices on the market have shortcomings such as incomplete waterproofing, difficulty in waterproofing the transmission shaft, and inability to dissipate heat." However, the waterproof device in the above application only seals the motor's rotating shaft, but the motor has external electrical connection wires. The sealing solution presented in the above application is located at the connection point of the wires, which needs improvement. Summary of the Invention

[0005] The object of the present invention is to provide a waterproof device that can increase the service life of a motor, so as 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: a waterproof device that can increase the service life of a motor, comprising a protective box, a base fixedly connected to the bottom of the protective box, a motor body arranged in the protective box, a rotating shaft fixedly connected to the right side of the motor body, an installation mechanism arranged in the protective box at the bottom of the rotating shaft, a positioning mechanism arranged in the installation mechanism, and a sealing mechanism arranged on the left side of the protective box.

[0007] The mounting mechanism includes a fixed component, a sliding component and a first sealing component. The fixed component is arranged at the bottom of the motor body, the sliding component is arranged in the fixed component, and the first sealing component is arranged on the right side of the sliding component.

[0008] The positioning mechanism includes a positioning component and a moving component. The positioning component is arranged on the front side of the sliding component, and the moving component is arranged on the right side of the positioning component.

[0009] The sealing mechanism includes a mounting assembly and a second sealing assembly. The mounting assembly is arranged on the left side of the protective box, and the second sealing assembly is arranged on the left side of the mounting assembly.

[0010] According to the above technical solution, the fixing assembly includes a fixing frame, which is fixedly connected to the bottom of the motor body, and a mounting card is fixedly connected to the bottom of the fixing frame. A sleeve is sleeved on the outside of the mounting card, and the sleeve is fixedly connected to the bottom of the protective box. A closing plate is sleeved on the right side of the protective box, and a positioning card is fixedly connected to the left bottom of the closing plate corresponding to the sleeve position. The positioning card is sleeved in the sleeve, and the left side of the positioning card fits with the right side of the mounting card.

[0011] According to the above technical solution, the sliding assembly includes a fixed frame, which is fixedly connected to the left side of the closed plate, and fixed plates are fixedly connected on the upper and lower sides of the fixed frame. A slide plate is slidably connected to the fixed plate, and a movable slide rod is fixedly connected to the right side of the slide rod. A first movable slide groove is provided on the right side of the fixed plate corresponding to the position of the movable slide rod, and a grip rod is fixedly connected to the right side of the movable slide rod.

[0012] According to the above technical solution, the first sealing assembly includes a connecting arc plate, which is fixedly connected to the right side of the slide close to the direction of the rotating shaft. The right side of the connecting arc plate is fixedly connected to a fixed arc frame, and the inner sides of the connecting arc plate and the fixed arc frame are in contact with the outer ring of the rotating shaft. An arc-shaped rubber strip is fixedly connected to the inside of the fixed arc frame, and the inner side of the arc-shaped rubber strip is in contact with the outer ring of the rotating shaft.

[0013] According to the above technical solution, the positioning assembly includes a fixed box, which is fixedly connected to the front side of the fixed frame. A slide is slidably connected inside the fixed box, and a compression spring is fixedly connected inside the slide. The compression spring is fixedly connected to the front side of the fixed box. A positioning sleeve is fixedly connected to the rear side of the slide, and the positioning sleeve passes through the fixed frame backward and is sleeved on the front end of the handle.

[0014] According to the above technical solution, the moving component includes a limiting slide rod, which is fixedly connected to the right side of the slide cylinder. The fixed box and the closing plate are provided with a second moving slide groove corresponding to the position of the limiting slide rod, and the right side of the limiting slide rod is fixedly connected to a connecting plate.

[0015] According to the above technical solution, the installation assembly includes a connecting wire, which is fixedly connected to the left side of the motor body. A hole is opened on the left side of the protective box corresponding to the connecting wire position. A threaded pipe is fixedly connected to the left side of the protective box corresponding to the connecting wire position. The outer ring of the threaded pipe is threadedly connected to a threaded cylinder.

[0016] According to the above technical solution, the second sealing assembly includes a threaded sleeve, which is fixedly connected to the left side of the threaded barrel, and the left side of the threaded sleeve is fixedly connected to a limiting ring. A sealing rubber ring is provided on the left side of the inner ring of the threaded sleeve, and sliders are fixedly connected to the front and rear sides of the sealing rubber ring. The sliders are slidably connected to the front and rear sides of the threaded sleeve, and the outer ring of the threaded sleeve is threadedly connected to the threaded sleeve.

[0017] Compared with the prior art, the present invention provides a waterproof device that can increase the service life of the motor and has the following beneficial effects:

[0018] 1. The waterproof device that can increase the service life of the motor prevents external moisture from entering the protective box at the connection between the right fixed arc frame and the rotating shaft through the provided installation mechanism. At the same time, the fixed arc frames on the upper and lower sides are sleeved on the outer ring of the rotating shaft through the arc-shaped rubber strips provided on the inner side to seal the rotating shaft, which will not affect the rotation of the rotating shaft, so that the motor will not come into direct contact with external moisture, avoiding the motor short circuit caused by water while preventing the motor casing from being corroded by contact with water vapor, thereby increasing the service life of the motor.

[0019] 2. This waterproof device that can increase the service life of the motor has a positioning mechanism. The positioning sleeve passes through the fixed frame backward and is connected to the front end of the upper and lower grip rods to complete the positioning of the grip rods, so that the fixed arc frames and arc-shaped rubber strips on the upper and lower sides cannot move on their own after installation. After the motor body is installed, the fixed arc frames and arc-shaped rubber strips on the upper and lower sides can maintain the sealing operation of the rotating shaft, thereby increasing the sealing stability of the device when in use.

[0020] 3. The waterproof device that can increase the service life of the motor has a sealing mechanism. The staff only needs to rotate the threaded sleeve after the threaded barrel is installed to move the threaded sleeve to the left so that the sealing rubber ring connected to the inner ring of the threaded sleeve can be squeezed inward to completely fill the outer ring position of the connecting wire to complete the sealing work of the connecting wire. The operation is simple and convenient for the staff to use. It avoids the short circuit of the motor caused by water and also prevents the corrosion of the motor casing caused by contact with water vapor, thereby increasing the service life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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:

[0022] Figure 1 It is a front schematic diagram of the present invention;

[0023] Figure 2 It is a front cross-sectional view of the present invention;

[0024] Figure 3 It is a front cross-sectional view of a part of the structure of the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the fixing mechanism;

[0026] Figure 5 It is a cross-sectional view of the fixed structure part;

[0027] Figure 6 It is a schematic diagram of the structure of the sliding component;

[0028] Figure 7 It is a schematic diagram of the partial structure of the positioning mechanism;

[0029] Figure 8 It is a schematic diagram of the partial structure of the sealing mechanism;

[0030] Figure 9 It is a cross-sectional view of the sealing structure.

[0031] In the figure: 1. Mounting mechanism; 11. Fixing assembly; 1101. Fixing frame; 1102. Mounting card; 1103. Sleeve frame; 1104. Closing plate; 1105. Positioning card; 12. Sliding assembly; 1201. Fixing frame; 1202. Fixing plate; 1203. Slide plate; 1204. Moving slide bar; 1205. First moving slide; 1206. Grip; 13. First sealing assembly; 1301. Connecting arc plate; 1302. Fixing arc frame; 1303. Arc rubber strip; 2. Positioning mechanism; 21. Positioning assembly; 2101. Fixing box ; 2102, slide; 2103, compression spring; 2104, positioning sleeve; 22, moving assembly; 2201, limiting slide rod; 2202, second moving slide; 2203, connecting plate; 3, sealing mechanism; 31, installation assembly; 3101, connecting wires; 3102, threaded pipe; 3103, threaded barrel; 32, second sealing assembly; 3201, threaded sleeve; 3202, limiting ring; 3203, sealing rubber ring; 3204, slider; 3205, threaded sleeve; 4, protective box; 5, base; 6, motor body; 7, rotating shaft. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] The present invention provides a technical solution: Example 1

[0034] Combine Figures 1 to 6 A waterproof device that can increase the service life of a motor includes a protective box 4, a base 5 is fixedly connected to the bottom of the protective box 4, a motor body 6 is arranged in the protective box 4, a rotating shaft 7 is fixedly connected to the right side of the motor body 6, an installation mechanism 1 is arranged at the bottom of the rotating shaft 7 in the protective box 4, a positioning mechanism 2 is arranged in the installation mechanism 1, and a sealing mechanism 3 is arranged on the left side of the protective box 4.

[0035] The mounting mechanism 1 includes a fixed component 11 , a sliding component 12 and a first sealing component 13 . The fixed component 11 is arranged at the bottom of the motor body 6 , the sliding component 12 is arranged in the fixed component 11 , and the first sealing component 13 is arranged on the right side of the sliding component 12 .

[0036] The fixing assembly 11 includes a fixing frame 1101, which is fixedly connected to the bottom of the motor body 6. The bottom of the fixing frame 1101 is fixedly connected to a mounting card plate 1102, and a sleeve 1103 is sleeved on the outside of the mounting card plate 1102. The sleeve 1103 is fixedly connected to the bottom of the protective box 4. A closing plate 1104 is clamped on the right side of the protective box 4. A positioning card plate 1105 is fixedly connected to the position of the sleeve 1103 at the bottom of the left side of the closing plate 1104. The positioning card plate 1105 is sleeved in the sleeve 1103, and the left side of the positioning card plate 1105 is fitted with the right side of the mounting card plate 1102. The sliding assembly 12 includes a fixing frame 1201, which is fixedly connected to the left side of the closing plate 1104, and the upper and lower sides of the fixing frame 1201 are fixedly connected 1202. A slide plate 1203 is slidingly connected inside the fixed plate 1202, and a movable slide rod 1204 is fixedly connected to the right side of the slide plate 1203. A first movable slide groove 1205 is provided on the right side of the fixed plate 1202 corresponding to the position of the movable slide rod 1204. A grip rod 1206 is fixedly connected to the right side of the movable slide rod 1204. The first sealing assembly 13 includes a connecting arc plate 1301, and the connecting arc plate 1301 is fixedly connected to the right side of the slide plate 1203 near the direction of the rotating shaft 7. A fixed arc frame 1302 is fixedly connected to the right side of the connecting arc plate 1301, and the inner sides of the connecting arc plate 1301 and the fixed arc frame 1302 are in contact with the outer ring of the rotating shaft 7. An arc-shaped rubber strip 1303 is fixedly connected inside the fixed arc frame 1302, and the inner side of the arc-shaped rubber strip 1303 is in contact with the outer ring of the rotating shaft 7.

[0037] Furthermore: the sleeve 1103 is sleeved on the outside of the installation card plate 1102 to limit the motor body 6 through the fixed frame 1101, and the positioning card plate 1105 is installed on the right side of the sleeve 1103 through the closing plate 1104 to limit the installation card plate 1102, so that the motor body 6 cannot move by itself after being installed in the protective box 4, which increases the stability of the motor body 6 in the protective box 4 after installation, so that the sealing mechanism 3 on the left side of the protective box 4 and the first sealing component 13 on the right side will not move the motor body 6 and the rotating shaft 7 in the protective box 4 when sealing the connecting arc plate 1301 and the rotating shaft 7, thereby increasing the sealing performance of the device when in use. At the same time, the staff only needs to pull the handles 1206 on the upper and lower sides to drive the fixed arc frames 130 on the upper and lower sides. 2 is moved inwardly and sleeved on the outer ring of the rotating shaft 7, so that the arc-shaped rubber strips 1303 on the upper and lower sides are tightly fitted with the outer ring of the rotating shaft 7 to complete the sealing of the rotating shaft 7. The operation is simple and convenient for the staff to use. The arc-shaped rubber strips 1303 on the upper and lower sides are sleeved on the upper and lower sides of the outer ring of the rotating shaft 7 to complete the sealing of the rotating shaft 7, so that external moisture cannot enter the protective box 4 at the connection between the right fixed arc frame 1302 and the rotating shaft 7. At the same time, the fixed arc frames 1302 on the upper and lower sides are sleeved on the outer ring of the rotating shaft 7 through the arc-shaped rubber strips 1303 provided on the inner side to seal the rotating shaft 7, which will not affect the rotation of the rotating shaft 7, so that the motor will not directly contact with external moisture, thereby avoiding water short circuit of the motor and preventing corrosion of the motor housing caused by contact with water vapor, thereby increasing the service life of the motor.

[0038] Example 2

[0039] See Figure 4 、 Figure 5 and Figure 7 On the basis of the first embodiment, it is further obtained that the positioning mechanism 2 includes a positioning component 21 and a moving component 22 , the positioning component 21 is arranged in front of the sliding component 12 , and the moving component 22 is arranged on the right side of the positioning component 21 .

[0040] The positioning assembly 21 includes a fixed box 2101, which is fixedly connected to the outer front side of the fixed frame 1201. A slide 2102 is slidably connected inside the fixed box 2101. A compression spring 2103 is fixedly connected inside the slide 2102. The compression spring 2103 is fixedly connected to the inner front side of the fixed box 2101. A positioning sleeve 2104 is fixedly connected to the rear side of the slide 2102. The positioning sleeve 2104 passes through the fixed frame 1201 backward and is sleeved on the front end of the grip rod 1206. The moving assembly 22 includes a limiting slide 2201, which is fixedly connected to the right side of the slide 2102. A second moving groove 2202 is provided at the position of the limiting slide 2201 corresponding to the fixed box 2101 and the closing plate 1104. A connecting plate 2203 is fixedly connected to the right side of the limiting slide 2201.

[0041] Furthermore: the positioning sleeve 2104 passes through the fixed frame 1201 backward and is connected to the front end of the upper and lower grip rods 1206 to complete the positioning of the grip rod 1206, so that the upper and lower fixed arc frames 1302 and the arc rubber strip 1303 cannot move by themselves after installation, so that after the motor body 6 is installed, the upper and lower fixed arc frames 1302 and the arc rubber strip 1303 can maintain the sealing operation of the rotating shaft 7, thereby increasing the sealing stability of the device during use. At the same time, the staff only needs to push the connecting plate 2203 forward to drive the upper and lower positioning sleeves 2104 to move forward, so that the staff can directly pull the upper and lower grip rods 1206 to move up and down to complete the sealing or unsealing of the rotating shaft 7 by the fixed arc frame 1302 and the arc rubber strip 1303. The operation is simple and convenient for the staff to use.

[0042] Example 3

[0043] See Figure 3 、 Figure 8 and Figure 9 , and on the basis of Example 1 and Example 2, it is further obtained that the sealing mechanism 3 includes an installation component 31 and a second sealing component 32, the installation component 31 is arranged on the left side of the protective box 4, and the second sealing component 32 is arranged on the left side of the installation component 31.

[0044] The mounting assembly 31 includes a connecting wire 3101, which is fixedly connected to the left side of the motor body 6. A hole is opened on the left side of the protective box 4 corresponding to the position of the connecting wire 3101. A threaded tube 3102 is fixedly connected to the position of the connecting wire 3101 on the left side of the protective box 4 corresponding to the position of the connecting wire 3101. The outer ring of the threaded tube 3102 is threadedly connected to a threaded barrel 3103. The second sealing assembly 32 includes a threaded sleeve 3201, which is fixedly connected to the left side of the threaded barrel 3103. The left side of the threaded sleeve 3201 is fixedly connected to a limiting ring 3202. A sealing rubber ring 3203 is provided on the left side of the inner ring of the threaded sleeve 3201. Sliders 3204 are fixedly connected to the front and rear sides of the sealing rubber ring 3203. The slider 3204 is slidably connected to the front and rear sides of the threaded sleeve 3201. The outer ring of the threaded sleeve 3201 is threadedly connected to a threaded sleeve 3205.

[0045] The lock hole 3201 of the second end cap 3202 is formed in the lock hole 3203 of the second end cap 3204, and the lock hole 3203 of the second end cap 3204 is formed in the lock hole 3203.

[0046] In actual operation, when this device is used, when the motor body 6 needs to be installed, the staff first places the motor body 6 from right to left in the protection box 4, so that the installation card plate 1102 and the sleeve 1103 are clamped into the sleeve 1103. When installing the motor body 6, the staff pays attention to passing the connecting wire 3101 through the left side of the protection box 4 until the left side of the installation card plate 1102 is in contact with the left side of the sleeve 1103. Then the staff clamps the closing plate 1104 into the right side of the protection box 4, so that the positioning card plate 1105 at the bottom of the closing plate 1104 is also clamped into the sleeve 1103, so that the left side of the positioning card plate 1105 is in contact with the right side of the installation card plate 1102. At this time, the installation of the motor body 6 is completed;

[0047] After that, the staff member toggles the connecting plate 2203 forward, and the connecting plate 2203 moves forward, which drives the slide cylinders 2102 on the upper and lower sides to move forward through the limit slide bar 2201. The slide cylinders 2102 on the upper and lower sides move forward, which drives the positioning sleeves 2104 on the upper and lower sides to move forward and retract into the fixed box 2101. Then, the staff member pulls the upper and lower fixed arc frames 1302 inward through the upper and lower grip rods 1206 until the inner sides of the upper and lower fixed arc frames 1302 fit together. At the outer ring of the rotating shaft 7, the staff then releases the limiting work of the connecting dial plate 2203. At this time, the slide cylinders 2102 on the upper and lower sides drive the positioning sleeves 2104 to move backward under the action of the compression springs 2103. The positioning sleeves 2104 on the upper and lower sides move backward and are connected to the front ends of the upper and lower grip rods 1206 to complete the limiting work of the upper and lower fixed arc frames 1302. At this time, the positioning work of the upper and lower fixed arc frames 1302 is completed, and the sealing work of the outer ring position of the rotating shaft 7 on the right side of the motor body 6 is completed;

[0048] Finally, the staff will put the threaded barrel 3103 on the outer circle of the connecting wire 3101 and contact it with the threaded tube 3102 for rotation. The threaded barrel 3103 rotates and moves to the right on the outer circle of the threaded tube 3102 until the right side of the threaded barrel 3103 is in contact with the left side of the protective box 4, and the installation of the threaded barrel 3103 is completed. Then the staff will rotate the threaded sleeve 3205 to make the threaded sleeve 3205 move to the left on the outer circle of the threaded sleeve 3201. The threaded sleeve 3201 moves to the left and contacts the slider 3204 to squeeze the slider 3204. The sliders 3204 at the front and rear ends move inward to squeeze the sealing rubber ring 3203, causing the sealing rubber ring 3203 to deform inward and dig out the gap in the outer circle of the connecting wire 3101 to fill. At this time, the sealing work of the connecting wire 3101 is completed, and the installation of the motor is completed.

[0049] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0050] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are 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 will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A waterproof device capable of increasing the service life of a motor, comprising a protective box (4), characterized in that: The bottom of the protection box (4) is fixedly connected to a base (5), a motor body (6) is provided in the protection box (4), a rotating shaft (7) is fixedly connected to the right side of the motor body (6), a mounting mechanism (1) is provided in the protection box (4) at the bottom of the rotating shaft (7), a positioning mechanism (2) is provided in the mounting mechanism (1), and a sealing mechanism (3) is provided on the left side of the protection box (4); The mounting mechanism (1) comprises a fixed component (11), a sliding component (12) and a first sealing component (13); the fixed component (11) is arranged at the bottom of the motor body (6); the sliding component (12) is arranged in the fixed component (11); and the first sealing component (13) is arranged on the right side of the sliding component (12); The fixing assembly (11) includes a fixing frame (1101), the fixing frame (1101) is fixedly connected to the bottom of the motor body (6), the bottom of the fixing frame (1101) is fixedly connected to a mounting card (1102), the outer side of the mounting card (1102) is sleeved with a sleeve (1103), the sleeve (1103) is fixedly connected to the bottom of the protection box (4), a closing plate (1104) is sleeved in the right side of the protection box (4), the bottom left side of the closing plate (1104) is fixedly connected to a positioning card (1105) at a position corresponding to the sleeve (1103), the positioning card (1105) is sleeved in the sleeve (1103), and the left side of the positioning card (1105) is in contact with the right side of the mounting card (1102); The sliding assembly (12) comprises a fixed frame (1201), the fixed frame (1201) being fixedly connected to the left side of the closing plate (1104), and a fixed plate (1202) being fixedly connected to the upper and lower sides of the fixed frame (1201). A slide plate (1203) is slidably connected to the fixed plate (1202), and a movable slide bar (1204) is fixedly connected to the right side of the slide bar (1203). A first movable slide groove (1205) is provided on the right side of the fixed plate (1202) at a position corresponding to the movable slide bar (1204), and a grip bar (1206) is fixedly connected to the right side of the movable slide bar (1204); The first sealing component (13) comprises a connecting arc plate (1301), the connecting arc plate (1301) being fixedly connected to the right side of the slide plate (1203) near the direction of the rotating shaft (7), the right side of the connecting arc plate (1301) being fixedly connected to a fixed arc frame (1302), the inner sides of the connecting arc plate (1301) and the fixed arc frame (1302) being in contact with the outer ring of the rotating shaft (7), the inner side of the fixed arc frame (1302) being fixedly connected to an arc-shaped rubber strip (1303), the inner side of the arc-shaped rubber strip (1303) being in contact with the outer ring of the rotating shaft (7); The positioning mechanism (2) comprises a positioning component (21) and a moving component (22), wherein the positioning component (21) is arranged on the front side of the sliding component (12), and the moving component (22) is arranged on the right side of the positioning component (21); The positioning assembly (21) includes a fixed box (2101), the fixed box (2101) is fixedly connected to the outer front side of the fixed frame (1201), a slide tube (2102) is slidably connected inside the fixed box (2101), a compression spring (2103) is fixedly connected inside the slide tube (2102), the compression spring (2103) is fixedly connected to the inner front side of the fixed box (2101), a positioning sleeve (2104) is fixedly connected to the rear side of the slide tube (2102), and the positioning sleeve (2104) passes through the fixed frame (1201) backwards and is sleeved on the front end of the gripping rod (1206); The moving assembly (22) includes a limiting slide bar (2201), the limiting slide bar (2201) is fixedly connected to the right side of the slide cylinder (2102), the fixing box (2101) and the closing plate (1104) are provided with a second moving slide groove (2202) at a position corresponding to the limiting slide bar (2201), and a connecting plate (2203) is fixedly connected to the right side of the limiting slide bar (2201); The sealing mechanism (3) includes a mounting assembly (31) and a second sealing assembly (32); the mounting assembly (31) includes a connecting wire (3101), the connecting wire (3101) is fixedly connected to the left side of the motor body (6), a hole is opened on the left side of the protection box (4) at a position corresponding to the connecting wire (3101), a threaded tube (3102) is fixedly connected to the left side of the protection box (4) at a position corresponding to the connecting wire (3101), and the outer ring of the threaded tube (3102) is threadedly connected to a threaded barrel (3103); The second sealing assembly (32) comprises a threaded sleeve (3201), the threaded sleeve (3201) being fixedly connected to the left side of the threaded barrel (3103), the left side of the threaded sleeve (3201) being fixedly connected to a limit ring (3202), a sealing rubber ring (3203) being provided on the left side of the inner ring of the threaded sleeve (3201), sliders (3204) being fixedly connected to the front and rear sides of the sealing rubber ring (3203), the sliders (3204) being slidably connected to the front and rear sides of the threaded sleeve (3201), and a threaded sleeve (3205) being threadedly connected to the outer ring of the threaded sleeve (3201).

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