Animal carcass high-pressure sterilization decomposition device
By combining the inner and outer tank structures with the stirring device, the problem of steam discharge impurities in traditional decomposition devices is solved, achieving high-temperature and high-pressure sterilization and decomposition of animal carcasses, ensuring the safety and harmlessness of the treatment.
Patent Information
- Application Number
- CN202423031000.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-10
AI Technical Summary
When traditional decomposition devices are heated with steam, the steam discharge can easily carry away impurities, resulting in the release of pollutants and increasing the risk of disease transmission.
It adopts an inner and outer tank structure, with the inner and outer tanks set coaxially. Hot air is introduced into the outer tank to heat and pressurize the inner tank. Combined with a stirring device, the animal carcass is sterilized and decomposed under high temperature and high pressure. The inner tank is a sealed structure to prevent impurities from being discharged.
It achieves efficient and safe sterilization and decomposition of animal carcasses, reduces pollutant emissions, and lowers the risk of disease transmission.
Smart Images
Figure CN223603111U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of animal harmless treatment equipment, for example, relates to a high-pressure sterilization and decomposition device for animal carcasses. BACKGROUND
[0002] At present, the traditional animal carcass treatment methods, such as direct burial or incineration, have the risk of environmental pollution and disease transmission. Especially during the outbreak of diseases, it is a challenge to quickly, efficiently and safely dispose of a large number of animal carcasses. In addition, the traditional methods often cannot effectively sterilize, increasing the risk of disease transmission.
[0003] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:
[0004] The traditional decomposition device needs to pass in high-temperature gas to heat and disinfect and decompose the animal carcasses, but the steam passing in is easy to cause impurities in the tank to be discharged when being discharged, which is easy to cause the discharge of pollutants. Practical new type content
[0005] To have a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not a general review, nor is it intended to determine key / important elements or delineate the scope of protection of these embodiments, but as a prelude to the detailed description below.
[0006] The embodiments of the present disclosure provide a high-pressure sterilization and decomposition device for animal carcasses to solve the problem that the steam passing in the traditional decomposition device for heating is easy to carry out impurities when being discharged.
[0007] In some embodiments, the high-pressure sterilization and decomposition device for animal carcasses comprises: an outer tank body, which is a cylindrical structure with both ends open; an inner tank body, which is a cylindrical structure with both ends open, is arranged in the outer tank body, and the inner tank body and the outer tank body are coaxially arranged, and a sealing cover is arranged between the end portions of the inner tank body and the outer tank body; a sealing cover, which is closed and arranged at both ends of the outer tank body; a fixed pipe, which is a hollow tubular structure, is inserted into the inner tank body, and one end of the fixed pipe inserted into the inner tank body is a sealing structure; a stirring sleeve, which is rotatably arranged on the fixed pipe, and one end of the stirring sleeve is provided with a driving shaft, the driving shaft extends out of the outer tank body through the sealing cover; and a stirring rod, which is arranged on the stirring sleeve.
[0008] In some embodiments, the fixed tube is provided with a rotating groove, a rotating ring is rotatably arranged in the rotating groove, and a stirring rod is rotatably arranged on the side of the rotating ring. A stirring sleeve is arranged outside the rotating ring, the stirring sleeve is a plate structure close to the side of the fixed tube, a limiting groove is formed in the side of the stirring sleeve, and a limiting plate is arranged on one end of the stirring rod close to the rotating ring. The limiting plate is a flat plate structure and is movably arranged in the limiting groove.
[0009] In some embodiments, the stirring sleeve is provided with a sleeve ring at both ends, the sleeve ring is arranged at both ends of the fixed tube, the limiting groove in the side of the stirring sleeve is arranged vertically between the stirring sleeve, the stirring rod is provided with a stirring plate, and the limiting plate and the stirring plate are in the same plane.
[0010] In some embodiments, the stirring sleeve is provided with a sleeve pipe outside the stirring sleeve, the sleeve pipe is arranged on the stirring sleeve, and the stirring rod passes through the side of the sleeve pipe and is rotatably arranged on the sleeve pipe.
[0011] In some embodiments, the stirring sleeve is provided with an inclined groove on the side away from the limiting groove, the inclined groove is arranged obliquely on the side of the stirring sleeve, and the side of the inclined groove is chamfered.
[0012] In some embodiments, one end of the driving shaft extending out of the sealing cover is provided with a driving motor, and the driving motor is fixedly connected to the sealing cover.
[0013] In some embodiments, the sealing cover is provided with a material pipe, the material pipe is communicated with the inner tank body, and the material pipe is provided with a material valve.
[0014] In some embodiments, the fixed tube is provided with a heat exchange pipe.
[0015] In some embodiments, one end of the outer tank body and the inner tank body is communicated with an air inlet pipe, and the other end of the outer tank body and the inner tank body is communicated with an air outlet pipe.
[0016] In some embodiments, a sealing spring is arranged on the driving shaft between the stirring sleeve and the sealing cover, a rubber pad is arranged between the sealing spring and the sealing cover, the rubber pad is arranged on the driving shaft, a pressing plate is arranged between the rubber pad and the sealing spring, and the pressing plate is arranged on one end of the rubber pad.
[0017] The animal carcass high-pressure sterilization and decomposition device provided by the embodiments of the present disclosure can achieve the following technical effects:
[0018] The outer tank is sleeved on the outside of the inner tank, hot gas is introduced between the inner tank and the outer tank, the animal carcass in the inner tank is heated and decomposed by heating the inner tank, the inner tank is a closed and sealed device, the pressure in the inner tank is increased by heating the animal carcass, and the high temperature and high pressure in the inner tank can sterilize and decompose the animal carcass.
[0019] The foregoing general description and the following description are only exemplary and explanatory, and are not used to limit the application. BRIEF DESCRIPTION OF DRAWINGS
[0020] One or more embodiments are exemplarily illustrated by corresponding drawings, which are not used to limit the embodiments, elements with the same reference numerals in the drawings are shown as similar elements, the drawings do not constitute a proportional limit, and wherein:
[0021] Figure 1 is a structure schematic diagram of an animal carcass high-pressure sterilization and decomposition device provided by the embodiment of the present disclosure;
[0022] Figure 2 is another side structure schematic diagram of the animal carcass high-pressure sterilization and decomposition device provided by the embodiment of the present disclosure;
[0023] Figure 3 is a cross-sectional structure schematic diagram of the animal carcass high-pressure sterilization and decomposition device provided by the embodiment of the present disclosure;
[0024] Figure 4 is a structure schematic diagram of the animal carcass high-pressure sterilization and decomposition device provided by the embodiment of the present disclosure Figure 3 is a structure schematic diagram of part A of the animal carcass high-pressure sterilization and decomposition device provided by the embodiment of the present disclosure;
[0025] Figure 5 is a structure schematic diagram of the animal carcass high-pressure sterilization and decomposition device provided by the embodiment of the present disclosure
[0026] Figure 6 is a structure schematic diagram of the animal carcass high-pressure sterilization and decomposition device provided by the embodiment of the present disclosure
[0027] Reference signs:
[0028] 100, outer tank body; 101, sealing cover; 102, fixed tube; 103, rotating groove; 104, rotating ring; 200, inner tank body; 201, blocking cover; 300, stirring sleeve; 301, driving shaft; 302, stirring rod; 303, limiting groove; 304, limiting plate; 305, sleeve ring; 306, stirring plate; 307, sleeve tube; 308, inclined groove; 309, driving motor; 400, material pipe; 401, material valve; 402, heat exchange pipe; 105, air inlet pipe; 106, air outlet pipe; 107, sealing spring; 108, rubber pad; 109, pressing plate DETAILED DESCRIPTION
[0029] In order to enable a more detailed understanding of the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings, which are only used for reference and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be simplified to facilitate the drawings.
[0030] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.
[0031] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back", and the like indicate the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation. In addition, in addition to indicating the orientation or positional relationship, the above-mentioned terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain attachment relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.
[0032] In addition, the terms "set", "connected", and "fixed" should be understood broadly. For example, "connected" can be fixed connection, detachable connection, or integral configuration; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium, or internal communication between two devices, elements or components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present disclosure according to the specific circumstances.
[0033] Unless otherwise specified, the term "plurality" means two or more.
[0034] In the embodiments of the present disclosure, the character " / " represents an "or" relationship between the objects before and after it. For example, A / B means A or B.
[0035] The term "and / or" is a description of the association between objects, which means that there can be three relationships. For example, A and / or B means that there are three relationships of A or B, or A and B.
[0036] It should be noted that the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.
[0037] In combination with Figures 1-6 As shown in the drawings, the present disclosure provides an animal carcass autoclave decomposition device, which comprises: an outer tank body 100, which is a cylindrical structure with both ends open; an inner tank body 200, which is a cylindrical structure with both ends open, is arranged in the outer tank body 100, and the inner tank body 200 and the outer tank body 100 are coaxially arranged, and a sealing cover 201 is arranged between the inner tank body 200 and the outer tank body 100; a sealing cover 101, which is arranged at both ends of the outer tank body 100; a fixed pipe 102, which is a hollow tubular structure, is inserted into the inner tank body 200, and one end of the fixed pipe 102 inserted into the inner tank body 200 is a sealing structure; a stirring sleeve 300, which is rotatably sleeved on the fixed pipe 102, and one end of the stirring sleeve 300 is provided with a driving shaft 301, which extends out of the outer tank body 100 through the sealing cover 101; a stirring rod 302, which is arranged on the stirring sleeve 300.
[0038] The animal carcass high-pressure sterilization and decomposition device provided by the embodiment of the present disclosure is characterized in that the outer tank body 100 and the inner tank body 200 are both cylindrical structures with a circular shape, the outer tank body 100 is sleeved on the inner tank body 200, hot air can be introduced between the inner tank body 200 and the outer tank body 100, so that the inner tank body 200 can be heated, and the inner tank body 200 is sealed by the sealing cover 101 at both ends, so that the inner tank body 200 forms a sealed space, the broken animal carcass after death can be put into the inner tank body 200, and the animal carcass in the inner tank body 200 can be heated and decomposed by introducing hot air between the inner tank body 200 and the outer tank body 100, the carcass in the inner tank body 200 can be heated and pressurized at the same time, so that the decomposition and sterilization of the animal carcass under high temperature and high pressure can be realized, one end of the fixed pipe 102 in the inner tank body 200 is fixed on the sealing cover 101, and the other end extends into the inner tank body 200, the fixed pipe 102 is a hollow tubular structure, hot air can be introduced into the fixed pipe 102 to heat the inner tank body 200, the fixed pipe 102 can heat the inner tank body 200, the stirring sleeve 300 is rotatably sleeved on the fixed pipe 102, the stirring sleeve 300 is a plate-shaped structure and is arranged on both sides of the fixed pipe 102, the driving shaft 301 on the stirring sleeve 300 can drive the stirring sleeve 300 to rotate, the rotation of the stirring sleeve 300 can drive the stirring rod 302 to stir the animal carcass in the inner tank body 200, and the stirring rod 302 is arranged vertically on the stirring sleeve 300, so that the animal carcass can be stirred conveniently.
[0039] Optionally, the fixed pipe 102 is provided with a rotating groove 103, the rotating groove 103 is rotatably provided with a rotating ring 104, the rotating ring 104 is rotatably provided with a stirring rod 302 on the side, the stirring sleeve 300 is sleeved outside the rotating ring 104, the stirring sleeve 300 is a plate-shaped structure close to the side of the fixed pipe 102, the stirring sleeve 300 is provided with a limiting groove 303 on the side, one end of the stirring rod 302 close to the rotating ring 104 is provided with a limiting plate 304, the limiting plate 304 is a flat plate-shaped structure, and the limiting plate 304 is movably clamped in the limiting groove 303.
[0040] Thus, the rotating groove 103 on the fixed tube 102 can accommodate the rotating ring 104 to rotate thereon, and the rotating groove 103 can also prevent the rotating ring 104 from sliding on the fixed tube 102, and the position of the rotating ring 104 can be limited. The stirring rod 302 is arranged on the rotating ring 104. The stirring sleeve 300 outside the rotating ring 104 is arranged on the side of the stirring rod 302. The stirring sleeve 300 is a plate structure, and the stirring sleeve 300 is close to the side of the fixed tube 102. Thus, the stirring sleeve 300 can rotate on the fixed tube 102. The limiting groove 303 on the side of the stirring sleeve 300 can rotate to the limiting plate 304 of the stirring rod 302. The limiting plate 304 can be clamped into the limiting groove 303. The stirring sleeve 300 continues to rotate, so that the rotation of the stirring sleeve 300 can drive the stirring rod 302 and the rotating ring 104 to rotate on the fixed tube 102, so that the stirring rod 302 can stir the animal carcasses in the inner tank 200.
[0041] Optionally, the stirring sleeve 300 is provided with a sleeve ring 305 at both ends, the sleeve ring 305 is sleeved on both ends of the fixed tube 102, the limiting groove 303 on the side of the stirring sleeve 300 is arranged vertically between the stirring sleeve 300, the stirring rod 302 is provided with a stirring plate 306, and the limiting plate 304 and the stirring plate 306 are in the same plane.
[0042] Thus, the stirring sleeve 300 is connected with the sleeve ring 305 at both ends. The stirring sleeve 300 can be stably connected to the fixed tube 102 through the sleeve ring 305, so that the stirring sleeve 300 can rotate on the fixed tube 102. The limiting groove 303 on the side of the stirring sleeve 300 rotates with the stirring sleeve 300. The limiting groove 303 on the side of the stirring sleeve 300 rotates to the side of the stirring rod 302. The limiting groove 303 continues to move and is clamped on the stirring plate 306. The rotation of the stirring rod 302 can be limited by the limiting groove 303, so that the position of the stirring plate on the stirring rod 302 can be limited. The rotation of the stirring sleeve 300 can drive the stirring rod 302 and the rotating ring 104 to rotate on the fixed tube 102, so that the animal carcasses can be stirred.
[0043] Optionally, the stirring sleeve 300 is provided with a sleeve pipe 307 outside. The sleeve pipe 307 is sleeved on the stirring sleeve 300, and the stirring rod 302 penetrates through the side of the sleeve pipe 307. The stirring rod 302 is rotatably arranged on the sleeve pipe 307.
[0044] Thus, the sleeve 307 outside the stirring sleeve 300 is sleeved on the stirring sleeve 300, the stirring sleeve 300 can be clamped and stabilized through the sleeve 307, the side of the sleeve 307 is sleeved on the stirring rod 302, the stirring rod 302 rotates the sleeve 307, the stability of the stirring rod 302 connected to the rotating ring 104 can be increased through the sleeve 307, and the sleeve 307 rotates with the rotating ring 104.
[0045] Optionally, the stirring sleeve 300 is provided with an inclined groove 308 away from the limiting groove 303, the inclined groove 308 is inclinedly arranged on the side of the stirring sleeve 300, and the side of the inclined groove 308 is chamfered.
[0046] Thus, the inclined groove 308 away from the limiting groove 303 is arranged on the side of the stirring sleeve 300, the movable plate on the stirring rod 302 is clamped in the inclined groove 308, the stirring plate can be inclined through the inclined stirring rod 302, the animal carcass in the inner tank 200 can be pushed through the inclined stirring plate, the animal carcass in the inner tank 200 can be pushed to one side of the inner tank 200, and the animal carcass can be conveniently discharged.
[0047] Optionally, the one end of the driving shaft 301 extending out of the sealing cover 101 is provided with a driving motor 309, and the driving motor 309 is fixedly connected to the sealing cover 101.
[0048] Thus, the one end of the driving shaft 301 extends out of the sealing cover 101, the driving shaft 301 can be driven to rotate through the driving motor 309, the stirring sleeve 300 can be driven to rotate through the driving motor 309, the driving motor 309 is reversely rotated, the stirring sleeve 300 is driven to rotate towards the inclined groove 308, the limiting plate 304 is separated from the limiting groove 303, the stirring sleeve 300 is continuously rotated, the inclined groove 308 is rotated to the limiting plate 304, the inclined groove 308 is clamped on the limiting plate 304, the limiting plate 304 can be inclined in the opposite direction of the stirring sleeve 300 through the limiting groove 303, the animal carcass in the inner tank 200 can be pushed to one side of the inner tank 200, and the treated animal carcass can be conveniently discharged.
[0049] Optionally, the sealing cover 101 is provided with a material pipe 400, the material pipe 400 is communicated with the inner tank 200, and the material pipe 400 is provided with a material valve 401.
[0050] In this way, the material pipe 400 on the sealing cover 101 can accommodate the addition or discharge of animal carcasses, and the sealing of the material pipe 400 can be realized through the material valve 401 on the material pipe 400.
[0051] Optionally, the fixed pipe 102 is provided with a heat exchange pipe 402.
[0052] In this way, the heat exchange pipe 402 in the fixed pipe 102 can heat the fixed pipe 102, thereby increasing the heating rate of the inner tank body 200, and the rotation of the stirring sleeve 300 can scrape off impurities adhering to the outer wall of the fixed pipe 102.
[0053] Optionally, the outer tank body 100 and the inner tank body 200 are communicated at one end by an air inlet pipe 105, and the outer tank body 100 and the inner tank body 200 are communicated at the other end by an air outlet pipe 106.
[0054] In this way, hot air can be introduced between the outer tank body 100 and the inner tank body 200, the air inlet pipe 105 on the outer tank body 100 and the inner tank body 200 can accommodate the entry of hot air, and the air outlet pipe 106 is arranged at the other end of the outer tank body 100 and the inner tank body 200, and the hot air in the tank can be discharged through the air outlet pipe 106. The air inlet pipe 105 and the air outlet pipe 106 can realize the circulation of hot air between the outer tank body 100 and the inner tank body 200.
[0055] Optionally, a sealing spring 107 is sleeved on the driving shaft 301 between the stirring sleeve 300 and the sealing cover 101, a rubber pad 108 is arranged between the sealing spring 107 and the sealing cover 101, the rubber pad 108 is sleeved on the driving shaft 301, a pressing plate 109 is arranged between the rubber pad 108 and the sealing spring 107, and the pressing plate 109 is sleeved on one end of the rubber pad 108.
[0056] In this way, the sealing spring 107 sleeved on the driving shaft 301 can push the pressing plate 109, the pressing plate 109 can push the rubber pad 108 sleeved on the driving shaft 301 to be pressed, the rubber pad 108 is tightly sleeved on the driving shaft 301, the rubber pad 108 can be expanded on the side by the pressing of the pressing plate 109, so that the rubber pad 108 can be in close contact with the driving shaft 301, and the rubber pad 108 is pressed on the sealing cover 101, so that the driving shaft 301 and the sealing cover 101 can be sealed, and the rubber pad 108 is arranged on the inner side of the sealing cover 101, so that the rubber pad 108 can always be pressed on the sealing cover 101 by the high pressure in the inner tank body 200, thereby increasing the sealing performance of the driving shaft 301 and the sealing cover 101.
[0057] The above description and drawings suffice to fully enable one skilled in the art to practice the embodiments of the present disclosure. Other embodiments can include structural and other changes. The embodiments are merely representative of possible variations. Individual components and functions are optional unless explicitly required, and the order of operations can be varied. Portions and features of some embodiments can be included in, or substituted for, portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and can be varied in a variety of ways. The scope of the present disclosure is limited only by the claims that follow.
Claims
1. An animal carcass autoclave decomposition apparatus, characterized by, The utility model relates to a kind of stirring device for fermentation tank, including: Outer tank body (100), the tubular structure of two ends opening; Inner tank body (200), the tubular structure of two ends opening, be arranged in the outer tank body (100), and the inner tank body (200) is coaxially arranged with outer tank body (100), and the inner tank body (200) and outer tank body (100) end are respectively provided with sealing cover (201); Sealing cover (101), closed arrangement in the outer tank body (100) both ends; Fixed pipe (102), hollow tubular structure inside, insert setting in the inner tank body (200), and the fixed pipe (102) is inserted in the one end of inner tank body (200) is sealed structure; Stirring sleeve (300), rotation sleeve is set on the fixed pipe (102), and the stirring sleeve (300) one end is provided with driving shaft (301), the driving shaft (301) passes through the sealing cover (101) and extends outer tank body (100); Stirring rod (302), setting on the stirring sleeve (300).
2. The animal carcass autoclave digester of claim 1, wherein, The fixed pipe (102) is clamped with rotation groove (103), rotation circle (104) is rotationally arranged in the rotation groove (103), and stirring rod (302) is rotationally arranged on the side of rotation circle (104), stirring sleeve (300) is sleeved outside rotation circle (104), the stirring sleeve (300) is the plate structure close to the side of fixed pipe (102), the side of stirring sleeve (300) is provided with limiting groove (303), one end of stirring rod (302) close to rotation circle (104) is provided with limiting plate (304), the limiting plate (304) is the flat plate structure, and the limiting plate (304) is movably clamped in the limiting groove (303).
3. The animal carcass autoclave digester of claim 2, wherein, The both ends of the stirring sleeve (300) are provided with sleeve ring (305), the sleeve ring (305) is sleeved on the both ends of the fixed pipe (102), the limiting groove (303) of the side of the stirring sleeve (300) is vertically arranged between the stirring sleeve (300), the stirring rod (302) is provided with stirring plate (306), and the limiting plate (304) and the stirring plate (306) are in the same plane.
4. The animal carcass autoclave digester of claim 1, wherein, The stirring sleeve (300) is sleeved with sleeve pipe (307) outside, the sleeve pipe (307) is sleeved on the stirring sleeve (300), and the stirring rod (302) passes through the side of the sleeve pipe (307), and the stirring rod (302) is rotationally arranged on the sleeve pipe (307).
5. The animal carcass autoclave digestion apparatus of claim 3, wherein, The side, away from the limiting groove (303), of the stirring sleeve (300) is provided with an inclined groove (308), the inclined groove (308) is obliquely arranged on the side of the stirring sleeve (300), and the side of the inclined groove (308) is chamfered.
6. The animal carcass autoclave digester apparatus of claim 1, wherein, The end of the driving shaft (301) extending out of the sealing cover (101) is provided with a driving motor (309), and the driving motor (309) is fixedly connected to the sealing cover (101).
7. The animal carcass autoclave digestion apparatus of claim 1, wherein, The sealing cover (101) is provided with a material pipe (400) which communicates with the inner tank body (200), and the material pipe (400) is provided with a material valve (401).
8. The animal carcass autoclave digester of claim 1, wherein, The fixed pipe (102) is provided with a heat exchange pipe (402).
9. The animal carcass autoclave digester apparatus of claim 1, wherein, One end of the outer tank body (100) and the inner tank body (200) is provided with an air inlet pipe (105), and the other end of the outer tank body (100) and the inner tank body (200) is provided with an air outlet pipe (106).
10. The animal carcass autoclave digester apparatus of claim 1, wherein, The driving shaft (301) between the stirring sleeve (300) and the sealing cover (101) is provided with a sealing spring (107), the sealing spring (107) and the sealing cover (101) are provided with a rubber pad (108), the rubber pad (108) is sleeved on the driving shaft (301), the rubber pad (108) and the sealing spring (107) are provided with a pressing plate (109), and the pressing plate (109) is sleeved on one end of the rubber pad (108).