CN211778969U - Automatic pressing type sealing device - Google Patents
Automatic pressing type sealing device Download PDFInfo
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- CN211778969U CN211778969U CN202020307344.8U CN202020307344U CN211778969U CN 211778969 U CN211778969 U CN 211778969U CN 202020307344 U CN202020307344 U CN 202020307344U CN 211778969 U CN211778969 U CN 211778969U
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Abstract
The utility model discloses an automatic pressing type sealing device, which comprises a shaft sleeve, a sealing element and a pressing device, wherein the mounting surface of the shaft sleeve is inwards sunken to form a sealing groove, and the sealing element is arranged in the sealing groove; one end of the compactor is contacted with the sealing element, and the other end of the compactor is provided with a boss along the radial direction, the boss is provided with a through hole along the axial direction, and a screw hole corresponding to the through hole is arranged on the mounting surface of the shaft sleeve; the pressing bolt can sequentially penetrate through the pressing spring and the through hole to be fixedly connected with the screw hole; the pressing end of the pressing spring, which can be contacted with the sealing element in the pressing device, can press the sealing element under the action of the pressing spring and partially extend into the sealing groove. The device can automatically supplement the worn allowance after the sealing element is worn, and ensures the perfect sealing filling rate, thereby prolonging the service life of the sealing element in the reciprocating motion, reducing the maintenance and replacement cost and improving the operation rate of machinery.
Description
Technical Field
The utility model relates to a machine parts specifically, relates to an automatic type device that compresses tightly of sealing member.
Background
The liquid or gas structure used in the reciprocating motion is a common mechanical part of modern vehicles, engineering machinery and pneumatic valves, and the reciprocating motion relates to fluid type sealing, wherein the sealing is generally made of non-metal materials and is necessarily abraded to a certain extent due to the long-time reciprocating motion, so that the service life of the whole machine is influenced. For example, when the rake type ash remover is used, certain abrasion is generated due to the repeated movement of the shaft and the friction between the sealing parts, and leakage can be generated after a certain abrasion amount is reached, so that the sealing failure is caused, and the use is influenced. Therefore, the sealing element is a vulnerable part in a similar mechanical structure, has a certain service life, and has to be replaced when the sealing element fails after reaching a certain number of use times.
And the situation that the sealing parts are worn to replace spare parts or stop using related equipment often occurs, and the loss caused by the shutdown is large. Therefore, a mechanism capable of greatly prolonging the service life of the sealing element is provided, which is used for reducing the replacement frequency of the wearing parts such as the sealing element and the like, so as to improve the operation rate of the machine and greatly save the maintenance cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an automatic type sealing device compresses tightly, the device can guarantee intact sealed filling rate by supplementing the surplus of wearing and tearing automatically after the sealing member wearing and tearing to improve the life of sealing member in reciprocating motion, reduce maintenance, replacement cost, improve the operating rate of machinery.
In order to achieve the above object, the present invention provides an automatic pressing type sealing device, which comprises a shaft sleeve, a sealing element and a pressing device, wherein the shaft sleeve, the sealing element and the pressing device can be sequentially sleeved on a moving shaft, wherein the mounting surface of the shaft sleeve is inwards recessed to form a sealing groove, and the sealing element is arranged in the sealing groove; one end of the compactor is contacted with the sealing element, and the other end of the compactor is provided with a boss along the radial direction, the boss is provided with a through hole along the axial direction, and a screw hole corresponding to the through hole is arranged on the mounting surface of the shaft sleeve; the pressing bolt can sequentially penetrate through the pressing spring and the through hole to be fixedly connected with the screw hole; the compaction spring can exert the effort towards the axle sleeve motion to the collet to under the condition that the sealing member volume reduces, the collet slides along clamp bolt under the promotion of effort, and the end that compresses tightly that contacts with the sealing member in the collet can exert pressure and partly stretch into in the seal groove to the sealing member.
Preferably, the material of the sealing element is a non-metal soft material.
Preferably, the material of the sealing element is one of rubber and graphite.
Preferably, the distance from the end head of the pressing end to the boss is not less than the maximum deformation of the sealing element along the axial direction.
Preferably, the counter force of the pressure spring is greater than the resistance to deformation of the seal.
Preferably, the end of the axial section of the compactor is T-shaped, and the boss is a T-shaped vertical part.
Preferably, the moving shaft is capable of rotational and/or axial reciprocation.
In the technical scheme, the utility model discloses install the sealing member in the seal groove that the axle sleeve was reserved, motion axle, clamp bolt, pressure spring, collet accomplish according to the assembly as shown to tightening clamp bolt makes pressure spring push down the collet, the collet compresses tightly the sealing member at the axial this moment, because the reason that compresses tightly, the sealing member radially can produce certain inflation, and the inflation volume of here can produce better sealed effect. The sealing element is pressed by the pressing device, so that the sealing element can be well protected. The radial allowance of the compensation seal can be continuously maintained. The radial allowance of the sealing element is compensated by compressing the axial allowance of the sealing element so as to ensure the perfect sealing filling rate. In the later use process, certain abrasion can be generated on the contact surface of the radial direction of the sealing element and the moving shaft, but due to the action of the compression spring, the axial direction of the sealing element can bear pressure and continuously supplement the radial material quantity of the sealing element, and the sealing element still has a good sealing effect, so that the service life of the sealing element in the reciprocating motion is prolonged. The scheme can greatly prolong the service life of the sealing element and improve the mechanical operation rate.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic cross-sectional view of an automatic compression type sealing device;
fig. 2 is a front view schematically showing the structure of the automatic compression type sealing apparatus.
Description of the reference numerals
1 motion shaft 2 hold-down bolt
3 hold-down spring 4 holddown
5 sealing element 6 shaft sleeve
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
In the present invention, unless otherwise specified, the terms "upper, lower, top, bottom, far, near, side" and the like included in the terms "an orientation" merely represent an orientation of the terms in a conventional use state or a colloquial meaning understood by those skilled in the art, and should not be construed as limiting the terms.
As shown in fig. 1, the utility model provides an automatic pressing type sealing device, which comprises a shaft sleeve 6, a sealing element 5 and a pressing device 4 which can be sleeved on a moving shaft 1 in sequence, wherein the mounting surface of the shaft sleeve 6 is inwards sunken to form a sealing groove, and the sealing element 5 is arranged in the sealing groove; one end of the compactor 4 is contacted with the sealing element 5, and the other end is provided with a boss along the radial direction, the boss is provided with a through hole along the axial direction, and the mounting surface of the shaft sleeve 6 is provided with a screw hole corresponding to the through hole; the clamping device also comprises a pressing bolt 2 and a pressing spring 3, wherein the pressing bolt 2 can sequentially penetrate through the pressing spring 3 and the through hole to be fixedly connected with the screw hole; the compression spring 3 is in a compression state under the action of the nut of the compression bolt 2, so that acting force moving towards the shaft sleeve 6 can be applied to the compressor 4, the compressor 4 slides along the compression bolt 2 under the pushing action of the acting force under the condition that the size of the sealing element 5 is reduced, and the compression end, which is in contact with the sealing element 5, in the compressor 4 can apply pressure to the sealing element 5 and partially extends into the sealing groove. Like this, install sealing member 5 in the seal groove that axle sleeve 6 reserved, motion axle 1, compression bolt 2, compression spring 3, collet 4 are accomplished according to the assembly as shown in fig. 1 to adjust compression bolt 2 and make compression spring 3 push down collet 4, collet 4 compresses tightly sealing member 5 in the axial this moment, because the reason that compresses tightly, sealing member 5 radially can produce certain inflation, and the inflation volume here can produce better sealed effect. The sealing element 5 can be well protected by pressing the sealing element 5 by the presser 4. The radial allowance of the seal 5 is also continuously compensated. The radial allowance of the seal 5 is compensated by compressing the axial allowance of the seal 5 to ensure a perfect seal filling rate. In the later use process, certain abrasion can be generated on the contact surface of the radial direction of the sealing element 5 and the moving shaft 1, but due to the action of the compression spring 3, the axial direction of the sealing element 5 can bear pressure and continuously supplement the radial material quantity of the sealing element 5, and still has better sealing effect, so that the service life of the sealing element 5 in the reciprocating motion is prolonged. The scheme can greatly prolong the service life of the sealing element 5 and improve the mechanical operation rate.
In a preferred embodiment of the present invention, the material of the sealing member 5 is a non-metallic soft material. This is also the conventional material used for the sealing element in the art, and in the present invention, the material of the sealing element 5 does not need to be further updated, thereby reducing the technical improvement cost.
In a preferred embodiment of the present invention, the material of the sealing member 5 is one of rubber and graphite. In this way, the pressure bolt 2 provides an axial pressure force to the pressure means 4 via the pressure spring 3, which provides a pressure source for later compensation of wear of the seal 5. The deformation and sealing effects of the rubber and the graphite are good, and the manufacturing cost can be saved.
In a preferred embodiment of the present invention, the distance from the end of the pressing end to the boss is not less than the maximum axial deformation of the sealing member 5. In this way, the end of the clamping end can also bear on the seal 5 during wear compensation of the latter seal 5, and also protect the seal 5 well.
In a preferred embodiment of the invention, the counter force of the pressure spring 3 is greater than the deformation resistance of the sealing element 5. In this way, the radial allowance of the seal 5 can be compensated by compressing the axial allowance of the seal 5 to ensure a perfect seal filling rate, thereby improving the service life of the seal 5.
In a preferred embodiment of the present invention, the end of the axial section of the pressing device 4 is "T" shaped, and the boss is a vertical part of "T" shape. This improves the stability of the moving shaft 1 and reduces wear on the seal 5, thereby improving the service life of the seal 5.
In the above technical solution, the number of the through holes is plural, and in order to make the stress uniform and further improve the sealing effect, preferably, the plural through holes are uniformly distributed in the circumferential direction of the boss.
In a preferred embodiment of the present invention, the moving shaft 1 can rotate and/or reciprocate axially, and under the above-mentioned condition, the technical effects of the present invention can be achieved.
In the above technical solution, the compression spring is also called a compression spring or a compression spring, and is a coil spring that bears the radial pressure and provides a counter force to the external load pressure.
The device can be used for various mechanical equipment with moving shafts, such as a rake type ash remover, a hydraulic oil cylinder and the like.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features.
In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.
Claims (7)
1. An automatic compression type sealing device is characterized by comprising a shaft sleeve (6), a sealing element (5) and a compressor (4), wherein the shaft sleeve (6), the sealing element (5) and the compressor (4) can be sequentially sleeved on a moving shaft (1), a sealing groove is formed in the mounting surface of the shaft sleeve (6) in an inwards recessed mode, and the sealing element (5) is arranged in the sealing groove;
one end of the compactor (4) is in contact with the sealing element (5), a boss is formed at the other end of the compactor along the radial direction, a through hole is formed in the boss along the axial direction, and a screw hole corresponding to the through hole is formed in the mounting surface of the shaft sleeve (6);
the clamping device also comprises a pressing bolt (2) and a pressing spring (3), wherein the pressing bolt (2) can sequentially penetrate through the pressing spring (3) and the through hole to be fixedly connected with the screw hole;
the pressing spring (3) can apply acting force moving towards the shaft sleeve (6) to the pressing device (4), the pressing device (4) slides along the pressing bolt (2) under the pushing of the acting force under the condition that the size of the sealing element (5) is reduced, and a pressing end, which is in contact with the sealing element (5), of the pressing device (4) can apply pressure to the sealing element (5) and partially extends into the sealing groove.
2. The self-clinching seal of claim 1, wherein the seal (5) is of a non-metallic soft material.
3. The self-clinching seal of claim 1, wherein the seal (5) is one of rubber and graphite.
4. The self-clinching seal of claim 1, wherein the tip of the clinching end is spaced from the boss by a distance not less than the maximum axial deflection of the seal (5).
5. The self-pressing type sealing device according to claim 1, wherein the resisting force of the pressing spring (3) is larger than the deformation resisting force of the sealing member (5).
6. The self-clinching seal of claim 1, wherein the end of the axial section of the clincher (4) is "T" shaped and the boss is a vertical portion of the "T" shape.
7. Automatic compression-type sealing device according to claim 1, characterised in that the moving shaft (1) is capable of rotary and/or axial reciprocating motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020307344.8U CN211778969U (en) | 2020-03-12 | 2020-03-12 | Automatic pressing type sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020307344.8U CN211778969U (en) | 2020-03-12 | 2020-03-12 | Automatic pressing type sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211778969U true CN211778969U (en) | 2020-10-27 |
Family
ID=72929594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020307344.8U Active CN211778969U (en) | 2020-03-12 | 2020-03-12 | Automatic pressing type sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211778969U (en) |
-
2020
- 2020-03-12 CN CN202020307344.8U patent/CN211778969U/en active Active
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