CN215763280U

CN215763280U - Framework oil seal for sealing dustproof mechanical equipment

Info

Publication number: CN215763280U
Application number: CN202122224111.9U
Authority: CN
Inventors: 王东吉
Original assignee: Shanghai Ruisheng Sealing Machinery Co ltd
Current assignee: Shanghai Ruisheng Sealing Machinery Co ltd
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2022-02-08
Anticipated expiration: 2031-09-14

Abstract

The utility model discloses a dustproof framework oil seal for sealing mechanical equipment, which comprises a sealing body, a waist edge and a sealing ring, wherein the waist edge is arranged at the top of the sealing body; the inner wall of the sealing ring is provided with an annular groove; the inner wall of the sealing ring is provided with an auxiliary lip, the bottom of the auxiliary lip is attached to the top of the sealing body, the outer wall of the auxiliary lip is provided with an annular embedding block, and the outer wall of the annular embedding block is attached to the inner wall of the annular groove. The dustproof function of the oil seal can be enhanced by installing the dustproof lip and the auxiliary lip, the auxiliary lip and the sealing ring are detachable, the auxiliary lip which is seriously abraded is convenient to replace, the fastening force between the oil seal and the shaft can be enhanced by the fastened annular steel sheet, the attaching tightness of the attaching area of the oil seal and the shaft is enhanced, and the sealing performance of the device is enhanced.

Description

Framework oil seal for sealing dustproof mechanical equipment

Technical Field

The utility model relates to the technical field of framework oil seals, in particular to a dustproof framework oil seal for sealing mechanical equipment.

Background

The framework oil seal is needed to be used in pneumatic hydraulic mechanical equipment, parts needing lubrication in transmission parts are guaranteed to be isolated from output parts, lubricating oil leakage is avoided, a supporting framework used for a reinforcing structure needs to be additionally arranged in the framework oil seal, and the oil seal can keep shape and tension.

The existing framework oil seal has the defects that:

1. reference CN111156317A discloses skeleton oil seal device and electric hammer, "including seal, skeleton, locking spring, the seal has oil blanket outer lane and oil blanket inner circle, and skeleton part or whole are wrapped up by the seal, and locking spring sets up in the periphery of oil blanket inner circle, and the seal is equipped with at least a set of strengthening rib, and the strengthening rib sets up on the circumferencial direction around locking spring, and the strengthening rib supports along the inner periphery that leans on the oil blanket outer lane along radial direction one end, and the other end supports and leans on locking spring's periphery. The framework oil seal device can greatly prolong the service life of the traditional framework oil seal device, resist air pressure, improve the oil seal effect and simultaneously has no increase in cost. However, the auxiliary lip in the device is integrally installed with the device, and the device is not detachable, so that the whole oil seal structure needs to be replaced when the auxiliary lip is greatly abraded after the oil seal is used for a long time, and resources are wasted;

2. the existing framework oil seal mostly does not increase extra fastening force, so that after the oil seal is used for a long time, the oil seal is easy to loosen in contact with a shaft, and the framework oil seal cannot be continuously used at the moment.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a dustproof framework oil seal for sealing mechanical equipment, which solves the problems mentioned in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: a framework oil seal for sealing dustproof mechanical equipment comprises a sealing body, a waist edge and a sealing ring, wherein the waist edge is installed at the top of the sealing body, the sealing ring is installed at the top of the sealing body, and the sealing ring is located in a space formed by the waist edge in a surrounding mode;

the inner wall of the sealing ring is provided with an annular groove;

the inner wall of the sealing ring is provided with an auxiliary lip, the bottom of the auxiliary lip is attached to the top of the sealing body, the outer wall of the auxiliary lip is provided with an annular embedding block, and the outer wall of the annular embedding block is attached to the inner wall of the annular groove.

Preferably, the outer wall of the waist edge is provided with an annular groove, and an annular steel sheet is arranged inside the annular groove.

Preferably, the diapire of ring channel is evenly installed the multiunit and is the stopper that the annular was arranged, and the top of stopper and the roof laminating of ring channel, multiunit the stopper all is located the outside of annular steel sheet.

Preferably, an annular framework is installed inside the sealing body.

Preferably, the internally mounted of waist limit has L type skeleton, and the bottom of L type skeleton extends into the inside of seal, L type skeleton is located the below of ring channel.

Preferably, the inner wall of the sealing ring is provided with a dust lip, and the dust lip is positioned above the auxiliary lip.

Preferably, the outer wall of the sealing ring is provided with an inner caulking groove, and the inner wall of the inner caulking groove is provided with a self-tightening spiral spring.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, when the auxiliary lip is worn seriously after being used for a long time, the auxiliary lip can apply a pulling force far away from the sealing ring to the auxiliary lip, then the auxiliary lip and the annular embedding block are separated from the annular groove, then a new auxiliary lip is replaced, then the auxiliary lip is aligned to the annular groove in the device, and pressure is applied to the annular embedding block, so that the thickness of the auxiliary lip is reduced, then the auxiliary lip is extruded into the annular groove, then the replacement of the auxiliary lip is completed, the replacement of the whole oil seal can be avoided, and resources can be saved;

2. according to the utility model, after the framework oil seal is installed on the outer surface of a shaft, the annular steel sheet is required to be arranged in the annular groove in a surrounding manner, the stop block is positioned on the outer side of the annular steel sheet at the moment, the annular steel sheet can be prevented from falling from the inner part of the annular groove to a certain extent, then an external tool such as a pliers is used for clamping two ends of the annular steel sheet, then a rotating force is applied to the pliers to drive the pliers to twist two ends of the annular steel sheet together until the rotating force cannot be continuously applied, then a pushing force facing the inner side of the annular groove is applied to the twisted annular steel sheet to enable the twisted annular steel sheet to be completely positioned in the annular groove, at the moment, the annular steel sheet can increase the fastening force between the oil seal and the shaft, the joint tightness of the oil seal and the shaft joint area is increased, and the sealing performance of the device is increased.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the construction of the minor lip of the present invention;

FIG. 3 is a schematic view of the installation structure of the waist-side annular groove and the stop block of the present invention;

FIG. 4 is a schematic view of the structure at A in FIG. 3 according to the present invention.

In the figure: 1. a seal body; 2. a waist edge; 3. a seal ring; 4. the minor lip; 5. an annular engagement block; 6. an annular groove; 7. an annular steel sheet; 8. a stop block; 9. an annular skeleton; 10. an L-shaped framework; 11. a dust lip; 12. a self-tightening coil spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

as shown in fig. 1 and 2, a framework oil seal for sealing dustproof mechanical equipment comprises a sealing body 1, a waist edge 2 and a sealing ring 3, wherein the waist edge 2 is installed at the top of the sealing body 1, the sealing ring 3 is installed at the top of the sealing body 1, and the sealing ring 3 is located in a space formed by the waist edge 2 in a surrounding manner;

specifically, the sealing body 1, the waist edge 2 and the sealing ring 3 are all made of rubber materials, and the rubber bodies with the performance can be selected according to different use occasions of the device.

The inner wall of sealing washer 3 is provided with the annular groove, and vice lip 4 is installed to the inner wall of sealing washer 3, and the bottom of vice lip 4 and the top laminating of seal 1, and annular gomphosis piece 5 is installed to the outer wall of vice lip 4, and the outer wall of annular gomphosis piece 5 and the inner wall laminating of annular groove.

It is specific, be in between vice lip 4 and the sealing washer 3 and dismantle the connection status, vice lip 4 whole form is followed down the diameter and is dwindled gradually, can increase two dirt-proof effects for this device simultaneously, avoid impurity such as external dust to get into inside the machine from the junction of vice lip 4 and axle, then influence the quality of the inside material of machine, annular gomphosis piece 5 is whole to be made by rubber materials, it has certain elasticity, and be in between annular gomphosis piece 5 and the annular groove and can dismantle the laminating, the change of vice lip 4 of then being convenient for.

Example two:

as shown in fig. 3 and 4, the outer wall of the waist edge 2 is provided with an annular groove 6, an annular steel sheet 7 is arranged inside the annular groove 6, a plurality of groups of blocking blocks 8 which are annularly arranged are uniformly arranged on the bottom wall of the annular groove 6, the top of each blocking block 8 is attached to the top wall of the annular groove 6, and the plurality of groups of blocking blocks 8 are all located on the outer side of the annular steel sheet 7.

Specifically, the setting up of ring channel 6 provides comparatively suitable place for placing of annular steel sheet 7, and simultaneously, annular steel sheet 7 encloses synthetic circular place after the inside of ring channel 6, the outer lane diameter of annular steel sheet 7 still is less than the outer lane diameter of ring channel 6, then the surface of waist limit 2 does not have the arch, avoid influencing and the contact between other objects, the installation of stopper piece 8 can avoid annular steel sheet 7 to drop from the inside of ring channel 6 to a certain extent, the thickness of annular steel sheet 7 is thinner, its height is the twice of thickness, and itself can take place deformation under the effect of external force, then its tail end and initiating terminal can be convenient for kink together, make banding steel sheet can form the annular form.

An annular skeleton 9 is installed inside the sealing body 1.

Specifically, the annular frame 9 may be used to reinforce the structure of the sealing body 1, and both the annular frame and the L-shaped frame 10 are made of rigid materials, and have certain hardness, so as to facilitate maintaining the shape of the sealing body 1.

The inside of waist 2 is installed L type skeleton 10, and the bottom of L type skeleton 10 extends into the inside of sealing 1, and L type skeleton 10 is located the below of ring channel 6.

Specifically, the L-shaped frame 10 has a certain hardness, and can be used to support the shape and tension of the waist edge 2, and meanwhile, the L-shaped frame 10 is reinforced to prevent the L-shaped frame from being easily bent.

The inner wall of sealing washer 3 is installed dustproof lip 11, and dustproof lip 11 is located the top of vice lip 4, and the outer wall of sealing washer 3 is provided with the embedded groove, and self-tightening coil spring 12 is installed to the inner wall of embedded groove.

Specifically, certain dustproof effect can be played to dust lip 11, avoid impurity such as dust to get into the device inside from this oil blanket and the junction entering device of axle, influence the effect of device operation, after this skeleton oil blanket is packed into oil blanket seat and is epaxial, the pressure of oil blanket blade and the contractile force of self-tightening coil spring 12 can produce certain radial fastening power to the axle, after this device uses a period, the pressure of oil blanket blade can reduce rapidly and disappear even, at this moment, self-tightening coil spring 12 can compensate the oil blanket at any time and tightly do all can.

The working principle is as follows: the device is provided with a double-lip structure, the dust lip 11 can preliminarily prevent impurities such as dust and the like from entering the device from the joint of the oil seal and the shaft, then the auxiliary lip 4 has the function of two times of dust prevention for the device, so that the impurities such as external dust and the like are prevented from entering the machine from the joint of the auxiliary lip 4 and the shaft and then influencing the quality of substances in the machine, the annular embedded block 5 and the auxiliary lip 4 are integrated, the annular embedded block 5 and the annular groove are detachably connected, the annular embedded block 5 is made of rubber materials and has certain elasticity, when extrusion force is applied to the annular embedded block 5, the thickness of the annular embedded block can be reduced, then the annular embedded block can be extruded into the annular groove, at the moment, the installation operation of the auxiliary lip 4 can be completed, and when a certain amount of pulling force far away from the sealing ring 3 is applied to the annular embedded block 5, the annular embedded block can gradually separate from the contact with the annular groove, so that the replacement operation of the auxiliary lip 4 is convenient to carry out, after the framework oil seal is installed on the outer surface of a shaft, the annular steel sheet 7 needs to be arranged in the annular groove 6 in a surrounding mode, then an external tool is used for clamping two ends of the annular steel sheet 7 and applying rotating force to enable the two ends of the annular steel sheet 7 to be driven to be twisted together until the rotating force cannot be continuously applied, namely the framework oil seal stops, the fitting tightness of the oil seal and the shaft fitting area can be increased at the moment, and then the sealing performance of the framework oil seal is improved.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a skeleton oil blanket of dirt-proof mechanical equipment sealed usefulness, includes seal (1), waist limit (2) and sealing washer (3), its characterized in that: the top of the sealing body (1) is provided with a waist edge (2), the top of the sealing body (1) is provided with a sealing ring (3), and the sealing ring (3) is positioned in a space formed by the waist edge (2) in a surrounding manner;

the inner wall of the sealing ring (3) is provided with an annular groove;

the inner wall of sealing washer (3) is installed vice lip (4), and the top laminating of the bottom and seal (1) of vice lip (4), annular gomphosis piece (5) are installed to the outer wall of vice lip (4), and the outer wall of annular gomphosis piece (5) and the inner wall laminating of annular groove.

2. The framework oil seal for sealing dustproof mechanical equipment according to claim 1, which is characterized in that: the outer wall of waist limit (2) is provided with ring channel (6), the internally mounted of ring channel (6) has annular steel sheet (7).

3. The framework oil seal for sealing dustproof mechanical equipment according to claim 2, which is characterized in that: the diapire of ring channel (6) is evenly installed the multiunit and is the fender position piece (8) that the annular was arranged, and the roof laminating of the top of keeping off position piece (8) and ring channel (6), multiunit fender position piece (8) all are located the outside of annular steel sheet (7).

4. The framework oil seal for sealing dustproof mechanical equipment according to claim 1, which is characterized in that: and an annular framework (9) is arranged in the sealing body (1).

5. The framework oil seal for sealing dustproof mechanical equipment according to claim 1, which is characterized in that: the inside mounting of waist limit (2) has L type skeleton (10), and the bottom of L type skeleton (10) extends the inside that gets into seal (1), L type skeleton (10) are located the below of ring channel (6).

6. The framework oil seal for sealing dustproof mechanical equipment according to claim 1, which is characterized in that: dust lip (11) are installed to the inner wall of sealing washer (3), and dust lip (11) are located the top of vice lip (4).

7. The framework oil seal for sealing dustproof mechanical equipment according to claim 1, which is characterized in that: the outer wall of sealing washer (3) is provided with the embedded groove, self-tightening coil spring (12) are installed to the inner wall in embedded groove.