CN219176946U - Oil seal sealing structure - Google Patents

Abstract

The utility model discloses an oil seal sealing structure, which relates to the technical field of sealing structures, and comprises a material pumping cylinder, a material pumping rod and a sealing structure, wherein the sealing structure comprises the following components: the first oil seal fixing piece is arranged in the material drawing cylinder and is in sliding connection with the material drawing cylinder; the second oil seal fixing piece is arranged in the material drawing cylinder and is in sliding connection with the material drawing cylinder; the fixed screw is in threaded connection with the first oil seal fixing piece, the second oil seal fixing piece and the material pumping rod; and one end of the sealing mechanism is connected with the first oil seal fixing piece, and the other end of the sealing mechanism is connected with the second oil seal fixing piece. According to the utility model, the sealing effect is realized through the first oil seal sealing ring and the second oil seal sealing ring which are of the Y-shaped structures, the frequency of replacing the sealing rings is reduced, the production effect is ensured, the economic cost and the time cost are saved, and the problems that in the prior art, the sealing device is sealed by mostly installing the sealing rings of the O-shaped structures, the sealing effect is poor, and the sealing rings need to be replaced frequently along with long-time use are solved.

Description

Oil seal sealing structure

Technical Field

The utility model relates to the technical field of sealing structures, in particular to an oil seal sealing structure.

Background

The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). The device has simple structure and reliable operation. When it is used to realize reciprocating motion, it can eliminate speed reducer, and has no transmission clearance and smooth motion, so that it can be widely used in hydraulic systems of various machines. The output force of the hydraulic cylinder is in direct proportion to the effective area of the piston and the pressure difference between two sides of the effective area of the piston, and the hydraulic cylinder basically consists of a cylinder barrel, a cylinder cover, the piston, a piston rod, a sealing device, a buffer device and an exhaust device. The buffer device and the exhaust device are necessary for other devices depending on the specific application.

In the prior art, most of sealing devices are sealed by installing a sealing ring with an O-shaped structure, so that the sealing effect is poor, and the sealing ring needs to be replaced frequently along with long-term use, so that an oil seal sealing structure is needed to solve the problems.

Disclosure of Invention

An object of an embodiment of the present utility model is to provide an oil seal structure, so as to solve the problems set forth in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides an oil blanket seal structure, includes material jar and material pole of taking out, still includes:

the first oil seal fixing piece is arranged in the material drawing cylinder and is in sliding connection with the material drawing cylinder;

the second oil seal fixing piece is arranged in the material drawing cylinder and is in sliding connection with the material drawing cylinder;

the fixed screw is in threaded connection with the first oil seal fixing piece, the second oil seal fixing piece and the material pumping rod;

and one end of the sealing mechanism is connected with the first oil seal fixing piece, and the other end of the sealing mechanism is connected with the second oil seal fixing piece.

As a further scheme of the utility model: the sealing mechanism includes:

the first oil seal ring is connected with the second oil seal fixing piece;

and the second oil seal sealing ring is connected with the first oil seal fixing piece.

As a further scheme of the utility model: further comprises:

one end of the wear-resistant ring is connected with the first oil seal sealing ring, and the other end of the wear-resistant ring is connected with the second oil seal sealing ring.

As a further scheme of the utility model: the first oil seal sealing ring is of a Y-shaped structure, and the second oil seal sealing ring is of a Y-shaped structure.

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

according to the utility model, the sealing effect is realized through the first oil seal sealing ring and the second oil seal sealing ring which are of the Y-shaped structures, the frequency of replacing the sealing rings is reduced, the production effect is ensured, the economic cost and the time cost are saved, and the problems that in the prior art, the sealing device is sealed by mostly installing the sealing rings of the O-shaped structures, the sealing effect is poor, and the sealing rings need to be replaced frequently along with long-time use are solved.

Drawings

Fig. 1 is a schematic structural diagram of an oil seal structure according to an embodiment of the present utility model.

Fig. 2 is a cross-sectional view of an oil seal structure according to an embodiment of the present utility model.

In the figure: 1. a material pumping cylinder; 2. a first oil seal fixing member; 3. a wear ring; 4. a second oil seal fixing member; 5. a material pumping rod; 6. a first oil seal ring; 7. a second oil seal ring; 8. and (5) fixing a screw.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the embodiment of the present utility model, referring to fig. 1 to 2, an oil seal structure includes a material extracting cylinder 1 and a material extracting rod 5, and further includes:

the first oil seal fixing piece 2 is arranged in the material drawing cylinder 1 and is in sliding connection with the material drawing cylinder;

the second oil seal fixing piece 4 is arranged in the material drawing cylinder 1 and is in sliding connection with the material drawing cylinder;

the fixed screw 8 is in threaded connection with the first oil seal fixing piece 2, the second oil seal fixing piece 4 and the material pumping rod 5;

and one end of the sealing mechanism is connected with the first oil seal fixing piece 2, and the other end of the sealing mechanism is connected with the second oil seal fixing piece 4.

The first oil seal fixing piece 2, the second oil seal fixing piece 4 and the material pumping rod 5 are connected together through the fixing screw 8, and the sealing mechanism seals the first oil seal fixing piece 2 and the second oil seal fixing piece 4.

Referring to fig. 1 and 2, as an embodiment of the present utility model, the sealing mechanism includes:

the first oil seal ring 6 is connected with the second oil seal fixing piece 4;

the second oil seal ring 7 is connected with the first oil seal fixing piece 2.

When the material pumping rod 5 reciprocates, the first oil seal sealing ring 6 seals the second oil seal fixing piece 4, and the second oil seal sealing ring 7 seals the first oil seal fixing piece 2.

Referring to fig. 1 and 2, as an embodiment of the present utility model, the method further includes:

and one end of the wear-resistant ring 3 is connected with the first oil seal sealing ring 6, and the other end of the wear-resistant ring is connected with the second oil seal sealing ring 7.

As an embodiment of the present utility model, the first oil seal ring 6 has a Y-shaped structure, and the second oil seal ring 7 has a Y-shaped structure.

In the reciprocating motion process, for the sealing between the first oil seal fixing piece 2, the second oil seal fixing piece 4 and the material extracting cylinder 1 mainly depends on the first oil seal sealing ring 6 and the second oil seal sealing ring 7, the first oil seal sealing ring 6 and the second oil seal sealing ring 7 with Y-shaped structures are attached to the coupling surface of the sealing pair by virtue of the open lips, when no internal pressure exists, only small contact pressure is generated due to deformation of the lip tips, and under the condition of no sealing, reverse pressure equal to medium pressure exists at each point contacted with a sealing medium, so that the bottom of the lip ring is axially compressed, the lips are circumferentially compressed, the contact width of the lip ring and the sealing surface is increased, and meanwhile, the contact stress is increased. When the internal pressure is increased again, the distribution form and the size of the contact pressure are further changed, the lip part is tightly matched with the sealing surface, and the lip part is the unique self-sealing function of the first oil seal ring 6 and the second oil seal ring 7 with Y-shaped structures, so that the tightness is better.

The working principle of the utility model is as follows: the first oil seal fixing piece 2, the second oil seal fixing piece 4 and the material pumping rod 5 are connected together through the fixing screw 8, when the material pumping rod 5 reciprocates, the first oil seal sealing ring 6 seals the second oil seal fixing piece 4, the second oil seal sealing ring 7 seals the first oil seal fixing piece 2, the first oil seal sealing ring 6 and the second oil seal sealing ring 7 of the Y-shaped structure are attached to a sealing pair coupling surface by virtue of the open lips, when no internal pressure exists, only small contact pressure is generated due to deformation of the lips, and under the condition of no sealing, reverse pressure equal to medium pressure exists at each point contacted with a sealing medium, so that the bottom of the lip-shaped ring is axially compressed, the lips are circumferentially compressed and are contacted with a sealing surface to be widened, and meanwhile, the contact stress is increased. When the internal pressure is increased again, the distribution form and the size of the contact pressure are further changed, the lip part is tightly matched with the sealing surface, and the lip part is the unique self-sealing function of the first oil seal ring 6 and the second oil seal ring 7 with Y-shaped structures, so that the tightness is better.

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 utility model may be embodied in other specific forms without departing from the spirit or essential characteristics 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.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (4)

1. The utility model provides an oil blanket seal structure, includes material jar and material pole of taking out, its characterized in that still includes:

the first oil seal fixing piece is arranged in the material drawing cylinder and is in sliding connection with the material drawing cylinder;

the second oil seal fixing piece is arranged in the material drawing cylinder and is in sliding connection with the material drawing cylinder;

the fixed screw is in threaded connection with the first oil seal fixing piece, the second oil seal fixing piece and the material pumping rod;

and one end of the sealing mechanism is connected with the first oil seal fixing piece, and the other end of the sealing mechanism is connected with the second oil seal fixing piece.

2. The oil seal structure according to claim 1, wherein the seal mechanism comprises:

the first oil seal ring is connected with the second oil seal fixing piece;

and the second oil seal sealing ring is connected with the first oil seal fixing piece.

3. The oil seal structure according to claim 1, further comprising:

one end of the wear-resistant ring is connected with the first oil seal sealing ring, and the other end of the wear-resistant ring is connected with the second oil seal sealing ring.

4. The oil seal structure according to claim 2, wherein the first oil seal ring has a Y-shaped structure, and the second oil seal ring has a Y-shaped structure.

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