The rotating shaft sealing structure of the sensor wiping and cleaning mechanism

Abstract

The present invention discloses a rotary shaft sealing structure of a sensor wiping and cleaning mechanism, comprising a sealing sleeve in the shape of a hollow cylinder as a whole, the sealing sleeve being sleeved on the outer side of the rotary shaft, one end of the sealing sleeve extending into between the rotary shaft and the end cover together with the rotary shaft, the surrounding edges of the other end of the sealing sleeve extending outward to form a connecting portion for fixed sealing connection with the end cover, and a gap between the portion of the outer ring of the sealing sleeve extending into between the end cover and the rotary shaft and the end cover. The present invention effectively improves the service life of the sealing sleeve, thereby achieving the purpose of effectively improving the reliability of the sealing of the matching position of the end cover and the rotary shaft, and further improving the service life of the sensor.

Description

Technical Field

[0001] The invention relates to the technical field of sensors, and in particular to a rotating shaft sealing structure of a sensor wiping and cleaning mechanism. Background Art

[0002] The sensor is a precision inspection device. During the use of sensor equipment such as turbidity sensors, pollutants in the working environment tend to adhere to the sensor probe surface, thereby reducing the measurement accuracy of the sensor.

[0003] In order to solve the problem of cleaning the probe surface of such sensors, the existing method is to add a wiping cleaning mechanism to clean the probe surface of the sensor. The wiping cleaning structure is achieved by adding a motor in the sensor, the shaft of the motor extends out of the sensor, and a cleaning brush head is installed at the position where the shaft extends out of the sensor. When in use, the shaft of the motor drives the cleaning brush head to twist within a specific angle range to clean the probe surface of the sensor, thereby preventing pollutants in the working environment from adhering to the probe surface. The motor body in this wiping and cleaning structure is installed inside the sensor and remains stationary, while the motor shaft extends from the probe surface of the sensor after passing through the end cover of the motor and is in a swinging state. Therefore, in order to prevent pollutants in the working environment from entering the interior of the sensor, an annular sealing sleeve is installed at the position where the end cover of the motor body and the rotating shaft of the motor cooperate. The inner ring of the sealing sleeve is used to cooperate with the rotating shaft, and the outer ring cooperates with the end cover. Since the rotating shaft is in a torsion state and the end cover is in a stationary state, when in use, the swinging shaft and the sealing sleeve or the end cover are in a state of sliding friction. Therefore, this traditional structural form of sealing using an annular sealing sleeve is prone to failure of the sealing sleeve due to friction and wear after long-term use. Damage to the sealing sleeve will directly cause water to enter the interior of the sensor, thereby damaging the sensor and reducing the service life of the sensor. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is: how to provide a shaft sealing structure of a sensor wiping and cleaning mechanism that can effectively improve the sealing reliability of the end cover and the shaft matching position, thereby increasing the service life of the sensor.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] The rotating shaft sealing structure of the sensor wiping and cleaning mechanism includes a sealing sleeve that is generally in the shape of a hollow cylinder. The sealing sleeve is arranged on the outside of the rotating shaft. One end of the sealing sleeve extends into between the rotating shaft and the end cover together with the rotating shaft and is fixedly sealed with the rotating shaft. The edges around the other end of the sealing sleeve extend outward to form a connecting portion for fixedly sealing with the end cover. There is a gap between the outer ring of the sealing sleeve and the part between the end cover and the rotating shaft.

[0007] The working principle of the present invention is: when the sealing structure of the present invention is in use, one end of the sealing sleeve, which is in the shape of a hollow cylinder as a whole, is extended into the position between the end cover and the rotating shaft, and the end portion of the sealing sleeve extending into the portion between the end cover and the rotating shaft is fixedly sealed and connected to the rotating shaft, and the other end of the sealing sleeve is fixedly sealed and connected to the end cover through a connecting portion. When the rotating shaft rotates to drive the cleaning brush head to clean the probe surface of the sensor, the rotating shaft drives the sealing sleeve to perform a twisting motion together. At this time, since there is a gap between the portion of the sealing sleeve extending into the portion between the rotating shaft and the end cover and the end cover, friction is not easily generated between the outer ring of the sealing sleeve and the end cover during the process of the rotating shaft driving the sealing sleeve to twist, thereby making it difficult for the outer ring of the sealing sleeve to be damaged due to friction.

[0008] The beneficial effect of the present invention is that during the torsion of the rotating shaft, a gap exists between the outer ring of the sealing sleeve and the end cover, so that it is not easy for friction to occur between the outer ring of the sealing sleeve and the end cover, and further, it is not easy for the outer ring of the sealing sleeve to be damaged due to friction. Compared with the structural form of the sealing sleeve adopted in the prior art, the present invention effectively improves the service life of the sealing sleeve, thereby achieving the purpose of effectively improving the reliability of the sealing at the matching position of the end cover and the rotating shaft, and further improving the service life of the sensor.

[0009] Preferably, the outer ring of the sealing sleeve is a conical structure, and the small end of the conical structure of the outer ring of the sealing sleeve extends into between the rotating shaft and the end cover together with the rotating shaft, and the connecting portion is formed by extending outward from the edges surrounding the large end of the conical structure of the outer ring of the sealing sleeve, and the edges surrounding the large end of the conical structure of the outer ring of the sealing sleeve are against the end cover.

[0010] In this way, by designing the outer ring of the sealing sleeve into a conical structure and making the edges around the large end of the conical structure of the sealing sleeve just abut against the end cover, on the one hand, when the sealing sleeve and the end cover are installed, the edges around the large end of the conical structure of the sealing sleeve and the end cover are used to limit the position, and on the other hand, the conical structure makes the size of the outer ring of the sealing sleeve extending between the rotating shaft and the end cover gradually decrease, so that the gap between the outer ring of the sealing sleeve extending between the rotating shaft and the end cover and the end cover is always greater than 0, ensuring that the outer ring of the sealing sleeve is not easy to generate friction with the end cover during the entire torsion process.

[0011] Preferably, the outer ring of the sealing sleeve is a cylindrical structure, one end of the sealing sleeve outer ring cylindrical structure extends into between the rotating shaft and the end cover together with the rotating shaft, the surrounding edges of the other end of the sealing sleeve outer ring cylindrical structure extend outward to form the connecting portion, and there is a gap between the portion of the sealing sleeve outer ring extending between the end cover and the rotating shaft and the end cover.

[0012] In this way, the outer ring of the sealing sleeve is designed to be a cylindrical structure, and one end of the cylindrical structure of the outer ring of the sealing sleeve is extended outward to form a connecting portion for connecting with the end cover. At the same time, there is a gap between the part of the outer ring of the sealing sleeve that extends between the end cover and the rotating shaft and the end cover, ensuring that during the entire torsion process, the outer ring of the sealing sleeve is not easy to generate friction with the end cover.

[0013] Preferably, a layer of flexible sealing film is also provided on the portion of the outer ring of the sealing sleeve extending between the end cover and the rotating shaft.

[0014] In this way, a layer of sealing film is sleeved on the portion of the outer ring of the sealing sleeve that extends into the portion between the end cover and the rotating shaft. The sealing film is soft and tough, can achieve a sealing effect and is not easily damaged. During use, even if the sealing sleeve breaks and leaks after being twisted multiple times, the sealing sleeve can support the sealing film sleeved on its outer ring to play a role in waterproofing and moisture-proofing, thereby further improving the reliability of the sealing at the matching position of the rotating shaft and the end cover.

[0015] Preferably, the sealing sleeve comprises a first sealing sleeve and a second sealing sleeve distributed along the axial direction of the rotating shaft, the edges around one end of the first sealing sleeve extend outward to form a connecting portion for fixedly sealingly connecting with the end cover, the end of the second sealing sleeve away from one end of the first sealing sleeve is fixedly sealingly connected with the rotating shaft, there is a gap between the end of the second sealing sleeve close to one end of the first sealing sleeve and the corresponding end of the first sealing sleeve, and the portion of the outer ring of the first sealing sleeve extending between the end cover and the rotating shaft and the outer ring of the second sealing sleeve are also covered with a layer of flexible sealing film.

[0016] In this way, the sealing sleeve is designed to be a first sealing sleeve and a second sealing sleeve with a gap therebetween, the first sealing sleeve is connected to the end cover through a connecting portion, the second sealing sleeve is connected to the rotating shaft, and a sealing film is sleeved on the portion of the outer ring of the first sealing sleeve extending into between the end cover and the rotating shaft and the outer ring of the second sealing sleeve, so that when the rotating shaft is twisted, the rotating shaft only drives the second sealing sleeve fixedly sealed therewith to twist, while the first sealing sleeve connected to the end cover will be in a stationary state, and the sealing effect between the first sealing sleeve and the second sealing sleeve is achieved by the sealing film, which will not be easily damaged during use due to its good flexibility, so that the first sealing sleeve will not be subjected to the torsional force, and thus the service life of the sealing sleeve will be further improved, thereby achieving the purpose of improving the sealing reliability of the matching position of the end cover and the rotating shaft and the service life of the sensor.

[0017] Preferably, the sealing film is a plastic film.

[0018] In this way, the plastic film is soft and tough, is not easily damaged during use, and has good sealing performance, and can still play a waterproof and moisture-proof role when the sealing sleeve is broken and leaks.

[0019] Preferably, the ends of the sealing sleeve used for fixing the sealing connection with the rotating shaft and the end cover are both sealed with sealant.

[0020] In this way, by filling the end of the sealing sleeve with sealant at the fixed sealing connection position between the rotating shaft and the end cover, the sealing sleeve, the end cover and the rotating shaft are sealed with sealant to ensure that external moisture does not enter the interior of the sensor from the connection, thereby further improving the reliability and service life of the sensor.

[0021] Preferably, a positioning protrusion is provided at the portion of the rotating shaft extending into the end cover, a positioning groove is provided at a position of the inner ring of the sealing sleeve corresponding to the positioning protrusion, and a sealant is poured at a position where the positioning groove cooperates with the positioning protrusion.

[0022] In this way, by designing a positioning protrusion on the rotating shaft, a positioning groove is opened at the position corresponding to the inner ring of the sealing sleeve and the positioning protrusion, the positioning protrusion and the positioning groove are used to realize the limiting of the connection between the rotating shaft and the sealing sleeve, and at the same time, sealant is poured at the matching position of the positioning groove and the positioning protrusion to prevent external moisture from entering the sensor through the matching position.

[0023] Preferably, the sealing sleeve is a torsion sealing sleeve having strength and toughness.

[0024] In this way, the torsion sealing sleeve can well follow the rotation of the rotating shaft. At the same time, the torsion sealing sleeve has certain strength and toughness and is not easily damaged during use, thereby ensuring its good sealing performance.

[0025] Preferably, the torsion sealing sleeve is made of rubber material.

[0026] In this way, the rubber material is relatively soft and has a certain elasticity, and the torsion sealing sleeve made of the rubber material can ensure the sealing performance while not affecting the torsion of the rotating shaft.

[0027] Preferably, the sealant is epoxy glue.

[0028] Thus, the epoxy adhesive has low cost and good water resistance and chemical corrosion resistance after curing, and is suitable for the working environment of the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a structural schematic diagram of Example 1 in a specific implementation manner of the present invention;

[0030] Figure 2 This is a structural diagram of Example 2 in a specific implementation manner of the present invention;

[0031] Figure 3 This is a schematic diagram of the structure of Example 3 in a specific implementation manner of the present invention;

[0032] Figure 4 It is a structural schematic diagram of a turbidity sensor having the rotary shaft sealing structure of the present invention.

[0033] Explanation of the reference numerals: rotating shaft 1, end cover 2, sealing sleeve 3, connecting portion 31, first sealing sleeve 32, second sealing sleeve 33, plastic film 4, sealant 5, turbidity sensor 6, cleaning brush head 7. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0035] Embodiment 1:

[0036] As attached Figure 1 As shown, the shaft sealing structure of the sensor wiping and cleaning mechanism includes a sealing sleeve 3 which is in the shape of a hollow cylinder as a whole. The sealing sleeve 3 is sleeved on the outside of the shaft 1. One end of the sealing sleeve 3 extends into between the shaft 1 and the end cover 2 together with the shaft 1 and is fixedly sealed with the shaft 1. The edges around the other end of the sealing sleeve 3 extend outward to form a connecting portion 31 which is fixedly sealed with the end cover 2. There is a gap between the outer ring of the sealing sleeve which extends into the portion between the end cover 2 and the shaft 1 and the end cover 2.

[0037] When the sealing structure of the present invention is in use, one end of the sealing sleeve 3, which is in the shape of a hollow cylinder as a whole, is extended into the position between the end cover 2 and the rotating shaft 1, and the other end of the sealing sleeve 3 is fixedly sealed and connected to the end cover 2 through the connecting portion 31. When the rotating shaft 1 is twisted to drive the cleaning brush head to clean the probe surface of the sensor, the rotating shaft 1 drives the sealing sleeve 3 to perform a twisting movement together. At this time, since there is a gap between the part of the sealing sleeve 3 extending between the rotating shaft 1 and the end cover 2 and the end cover 2, during the process of the rotating shaft 1 driving the sealing sleeve 3 to twist, it is not easy to generate friction between the outer ring of the sealing sleeve 3 and the end cover 2, so that the outer ring of the sealing sleeve 3 is not easy to be damaged due to friction.

[0038] During the torsion of the rotating shaft 1, a gap exists between the outer ring of the sealing sleeve 3 and the end cover 2, so that it is not easy for friction to occur between the outer ring of the sealing sleeve 3 and the end cover 2, and further, the outer ring of the sealing sleeve 3 is not easy to be damaged due to friction. Compared with the structural form of the sealing sleeve used in the prior art, the present invention effectively improves the service life of the sealing sleeve 3, thereby achieving the purpose of effectively improving the reliability of the sealing at the matching position of the end cover 2 and the rotating shaft 1, and further improving the service life of the sensor.

[0039] In this embodiment, the outer ring of the sealing sleeve 3 is a conical structure, and the small end of the outer ring conical structure of the sealing sleeve 3 extends into between the rotating shaft 1 and the end cover 2 together with the rotating shaft 1, and the connecting portion 31 is formed by the peripheral edges of the large end of the outer ring conical structure of the sealing sleeve 3 extending outward, and the peripheral edges of the large end of the outer ring conical structure of the sealing sleeve 3 abut against the end cover 2. In specific use, the sealing sleeve can also be made into other structural forms, as long as there is a gap between the outer ring of the sealing sleeve and the end cover, and friction is not easy to occur between the outer ring of the sealing sleeve and the end cover, and it is not limited to the structural form in the present invention.

[0040] In this way, by designing the outer ring of the sealing sleeve 3 into a conical structure, and making the edges around the large end of the conical structure of the sealing sleeve 3 just abut against the end cover 2, on the one hand, when the sealing sleeve 3 and the end cover 2 are installed, the edges around the large end of the conical structure of the sealing sleeve 3 and the end cover 2 are used for limiting, and on the other hand, the conical structure makes the size of the outer ring of the sealing sleeve 3 extending between the rotating shaft 1 and the end cover 2 gradually decrease, so that the gap between the outer ring of the sealing sleeve 3 extending between the rotating shaft 1 and the end cover 2 and the end cover 2 is always greater than 0, ensuring that the outer ring of the sealing sleeve 3 is not easy to generate friction with the end cover 2 during the entire torsion process.

[0041] In this embodiment, a layer of flexible sealing film is also provided on the portion of the outer ring of the sealing sleeve 3 extending between the end cover 2 and the rotating shaft 1 .

[0042] In this way, by arranging a layer of sealing film on the portion of the outer ring of the sealing sleeve 3 extending into the space between the end cover 2 and the rotating shaft 1, even if the sealing sleeve 3 breaks and leaks after being twisted many times, the sealing sleeve 3 can still support the sealing film on its outer ring to play a role of waterproofing and moisture-proofing, thereby further improving the reliability of the sealing of the matching position of the rotating shaft 1 and the end cover 2.

[0043] In this embodiment, the sealing film is a plastic film 4 .

[0044] In this way, the plastic film 4 is soft and tough, not easily torn during use and has good sealing performance, and can still play a waterproof and moisture-proof role when the sealing sleeve 3 is broken and leaking. Of course, in the specific use process, the sealing film can also be made of other materials, as long as the sealing film can meet the characteristics of being soft and tough, sealing and not easy to be damaged, and is not limited to the plastic film proposed in the present invention.

[0045] In this embodiment, the ends of the sealing sleeve 3 used for fixing and sealing the connection position with the rotating shaft 1 and the end cover 2 are both filled with sealant 5.

[0046] In this way, by filling the sealant 5 at the end of the sealing sleeve 3, the rotating shaft 1 and the end cover 2, the sealing sleeve 3, the end cover 2 and the rotating shaft 1 are sealed and fixed by the sealant 5, ensuring that external moisture will not enter the interior of the sensor from the connection, further improving the reliability and service life of the sensor. Of course, in specific use, the sealing sleeve 3, the rotating shaft 1 and the end cover 2 can also be fixed and sealed by means of screw pressure plates, or by other means, not limited to the connection method mentioned in this embodiment.

[0047] In this embodiment, the portion of the rotating shaft 1 extending into the end cover 2 is provided with a positioning protrusion, the inner ring of the sealing sleeve 3 is provided with a positioning groove at a position corresponding to the positioning protrusion, and the position where the positioning groove and the positioning protrusion cooperate is filled with sealant 5.

[0048] In this way, by designing a positioning protrusion on the rotating shaft 1, a positioning groove is opened at a position corresponding to the positioning protrusion on the inner ring of the sealing sleeve 3, and the positioning protrusion and the positioning groove are used to realize the limiting of the connection between the rotating shaft 1 and the sealing sleeve 3. At the same time, the sealant 5 is poured at the matching position of the positioning groove and the positioning protrusion to prevent external moisture from entering the sensor through the matching position.

[0049] In this embodiment, the sealing sleeve 3 is a torsion sealing sleeve having strength and toughness.

[0050] In this way, the torsion sealing sleeve can well follow the rotation of the rotating shaft. At the same time, the torsion sealing sleeve has certain strength and toughness and is not easily damaged during use, thereby ensuring its good sealing performance.

[0051] In this embodiment, the torsion sealing sleeve is made of rubber material.

[0052] In this way, the rubber material is relatively soft and has a certain elasticity, and the torsion sealing sleeve made of the rubber material can ensure the sealing performance while not affecting the torsion of the rotating shaft 1. Of course, in the specific use process, the torsion sealing sleeve can also be made of other materials, as long as the torsion sealing sleeve has certain strength, can be torsion and has toughness, can be sealed and is not easy to be broken, etc., and is not limited to the rubber material proposed in the present invention.

[0053] In this embodiment, the sealant 5 is epoxy glue.

[0054] In this way, the cost of epoxy glue is low, and after curing, it has good water resistance and chemical corrosion resistance, and is suitable for the working environment of the sensor. Of course, in the specific use process, the sealant can also be made of other materials besides epoxy glue, as long as the sealant has good sealing performance, and is not limited to the epoxy glue material proposed in the present invention.

[0055] In this embodiment, the connection portion 31 of the sealing sleeve 3 and the end cover 2 can be fixedly sealed by screws, or by other means. The connection between the rotating shaft 1 and the sealing sleeve 3 can utilize the elasticity of the sealing sleeve 3 itself to make the sealing sleeve 3 tightly fit on the rotating shaft 1, or the two can be fixedly sealed by gluing or other means.

[0056] Embodiment 2:

[0057] The difference from the first embodiment is that:

[0058] As attached Figure 2 As shown, in this embodiment, the outer ring of the sealing sleeve 3 is a cylindrical structure, one end of the outer ring cylindrical structure of the sealing sleeve 3 extends into between the rotating shaft 1 and the end cover 2 together with the rotating shaft 1, and the edges around the other end of the outer ring cylindrical structure of the sealing sleeve 3 extend outward to form a connecting portion, and there is a gap between the portion of the outer ring of the sealing sleeve 3 extending between the end cover 2 and the rotating shaft 1 and the end cover 2.

[0059] In this way, the outer ring of the sealing sleeve is designed to be a cylindrical structure, and one end of the cylindrical structure of the outer ring of the sealing sleeve is extended outward to form a connecting portion for connecting with the end cover. At the same time, there is a gap between the part of the outer ring of the sealing sleeve that extends between the end cover and the rotating shaft and the end cover, ensuring that during the entire torsion process, the outer ring of the sealing sleeve is not easy to generate friction with the end cover.

[0060] Embodiment three:

[0061] As attached Figure 3As shown, the difference between this embodiment and the first embodiment is that: the sealing sleeve includes a first sealing sleeve 32 and a second sealing sleeve 33 distributed along the axial direction of the rotating shaft, the edges around one end of the first sealing sleeve 32 extend outward to form a connecting portion 31 for fixedly sealingly connecting with the end cover 2, the end of the second sealing sleeve 33 away from one end of the first sealing sleeve 32 is fixedly sealingly connected with the rotating shaft 1, there is a gap between the end of the second sealing sleeve 33 close to one end of the first sealing sleeve 32 and the corresponding end of the first sealing sleeve 32, and the portion of the outer ring of the first sealing sleeve 32 extending between the end cover 2 and the rotating shaft 1 and the outer ring of the second sealing sleeve 33 are also covered with a layer of flexible sealing film 4.

[0062] In this way, the sealing sleeve is designed to be a first sealing sleeve 32 and a second sealing sleeve 33 with a gap therebetween. The first sealing sleeve 32 is connected to the end cover 2 through the connecting portion 31, and the second sealing sleeve 33 is connected to the rotating shaft 1. A sealing film 4 is sleeved on the portion of the outer ring of the first sealing sleeve 32 extending into the space between the end cover 2 and the rotating shaft 1 and the outer ring of the second sealing sleeve 33. In this way, when the rotating shaft 1 is twisted, the rotating shaft 1 only drives the second sealing sleeve 33 fixedly sealed therewith to twist, while the first sealing sleeve 32 connected to the end cover 2 will be in a stationary state. The sealing effect between the first sealing sleeve 32 and the second sealing sleeve 33 is achieved by the sealing film 4. The sealing film 4 will not be easily damaged during use due to its good flexibility. In this way, since the first sealing sleeve 32 is not subjected to the torsional force, the service life of the sealing sleeve will be further improved, thereby achieving the purpose of improving the sealing reliability of the matching position of the end cover 2 and the rotating shaft 1 and the service life of the sensor.

[0063] As attached Figure 4 The figure shows a schematic diagram of the structure of the rotating shaft sealing structure of the present invention when it is installed on the turbidity sensor 6 for use, wherein the rotating shaft sealing structure of the present invention is installed at A of the turbidity sensor 6, and the part of the rotating shaft of the rotating shaft sealing structure extending out of the turbidity sensor is installed with a cleaning brush head 7, and the cleaning brush head 7 is used to clean the probe surface of the turbidity sensor 6.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the technical solution. Those skilled in the art should understand that those modifications or equivalent substitutions of the technical solution of the present invention that do not depart from the purpose and scope of the technical solution should be included in the scope of the claims of the present invention.

Claims

1. The rotating shaft sealing structure of the sensor wiping and cleaning mechanism is characterized in that: It comprises a sealing sleeve which is in the shape of a hollow cylinder as a whole and an end cover with a hole, wherein the sealing sleeve is sleeved on the outside of the rotating shaft, one end of the sealing sleeve extends into the hole of the end cover together with the rotating shaft, the sealing sleeve is located between the rotating shaft and the end cover and is fixedly sealed and connected to the rotating shaft, the edges around the other end of the sealing sleeve extend outwards to form a connecting portion which is fixedly sealed and connected to the top of the end cover, and there is a gap between the portion of the outer ring of the sealing sleeve which extends into the hole wall between the rotating shaft and the end cover; The sealing sleeve comprises a first sealing sleeve and a second sealing sleeve distributed along the axial direction of the rotating shaft, the edges around one end of the first sealing sleeve extend outward to form a connection portion for fixedly sealingly connecting with the end cover, the end of the second sealing sleeve away from one end of the first sealing sleeve is fixedly sealingly connected with the rotating shaft, there is a gap between the end of the second sealing sleeve close to one end of the first sealing sleeve and the corresponding end of the first sealing sleeve, and the portion of the outer ring of the first sealing sleeve extending into the hole wall of the hole and the rotating shaft and the outer ring of the second sealing sleeve are also covered with a layer of flexible sealing film; The ends of the sealing sleeve used for fixing the sealing connection with the rotating shaft and the end cover are both filled with sealant; The portion of the rotating shaft extending into the hole is provided with a positioning protrusion, the inner ring of the sealing sleeve is provided with a positioning groove at a position corresponding to the positioning protrusion, and the position where the positioning groove and the positioning protrusion cooperate is filled with sealant; The sealing sleeve is a torsion sealing sleeve with strength and toughness.

2. The rotary shaft sealing structure of the sensor wiping and cleaning mechanism according to claim 1, characterized in that: The sealing film is a plastic film.

3. The rotary shaft sealing structure of the sensor wiping and cleaning mechanism according to claim 1, characterized in that: The torsion sealing sleeve is made of rubber material.

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