CN211288743U

CN211288743U - Framework oil seal

Info

Publication number: CN211288743U
Application number: CN201922450416.4U
Authority: CN
Inventors: 王景春; 曹永福
Original assignee: Changchun Sanhuan General Equipment Co Ltd
Current assignee: Changchun Sanhuan General Equipment Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-08-18
Anticipated expiration: 2029-12-31

Abstract

The utility model provides a skeleton oil blanket relates to mechanical seal element technical field, has solved the problem that the reliability is low, includes: the dustproof lip, the first main lip and the second main lip are sequentially arranged on the wall surface of the third rubber ring close to the center from bottom to top, and the first groove, the first spring protection lip, the second groove and the second spring protection lip are sequentially arranged on the wall surface of the third rubber ring far away from the center from bottom to top; first spring mounting is in first recess and first spring lip guard department, and the second spring mounting is in second recess and second spring lip guard department, keeps off the lip and sets up to second spring direction slope for prevent that first spring and second spring from droing when the installation of skeleton oil blanket. The utility model discloses a sealing reliability is high, can adopt the mounting means of hammering.

Description

Framework oil seal

Technical Field

The utility model relates to a mechanical seal element technical field, concretely relates to skeleton oil blanket.

Background

The framework oil seal is used as a mechanical sealing element on various mechanical equipment. The existing oil seal still has the need of improvement, such as poor reliability, and oil leakage occurs when the contact part of the main lip and the lip for sealing oil is scratched; for example, in consideration of the assembly cost, some enterprises still adopt a hammer to knock the oil seal, and the mode easily causes the spring outside the sealing lip to fall off, so that the stability of the spring installation is not strong enough; for example, after the framework oil seal is pressed into the assembly hole, the rebound of the outer cylindrical surface of the framework oil seal enables the framework oil seal to be extruded out of an ideal assembly position after being assembled for a period of time. Because the reliability of the framework oil seal applied nowadays is not enough and still needs to be improved, a novel framework oil seal is needed.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a skeleton oil blanket.

The utility model discloses a solve the technical scheme that technical problem adopted as follows:

a backbone oil seal, comprising:

a first annular skeleton;

the second annular framework is vertical to the first annular framework, and one end of the second annular framework is connected with one end of the first annular framework;

the first rubber ring is arranged on the first annular framework, and the wall surface of the first rubber ring, which is far away from the center of the first rubber ring, is provided with a plurality of circles of ripples;

a second rubber ring arranged on the second annular framework, wherein one end of the second rubber ring is connected with one end of the first rubber ring;

the third rubber ring is connected with the other end of the second rubber ring, and the third rubber ring is parallel to the first rubber ring and vertical to the second rubber ring;

the dustproof lip, the first main lip and the second main lip are sequentially arranged on the wall surface of the third rubber ring close to the center of the third rubber ring from bottom to top;

the first groove, the first spring guard lip, the second groove and the second spring guard lip are sequentially arranged on the wall surface, far away from the center of the third rubber ring, of the third rubber ring from bottom to top, the first groove, the first spring guard lip, the second groove and the second spring guard lip are sequentially connected, the first groove is arranged corresponding to the first main lip, the second groove is arranged corresponding to the second main lip, the first spring guard lip and the first groove jointly form a first mounting groove, and the second spring guard lip and the second groove jointly form a second mounting groove;

the first spring is arranged in the first mounting groove, and the contact area of the first spring and the first mounting groove exceeds half of the surface area of the first spring;

the second spring is arranged in the second mounting groove, and the contact area of the second spring and the second spring groove exceeds half of the surface area of the second spring;

and a blocking lip on the upper surface of the second rubber ring is arranged and is obliquely arranged towards the direction of the second spring, the distance between the blocking lip and the first spring is greater than 1/3 of the diameter of the first spring and less than 2/3 of the diameter of the first spring, the distance between the blocking lip and the second spring is greater than 1/3 of the diameter of the second spring and less than 2/3 of the diameter of the second spring, and the height of the blocking lip is equal to or higher than that of the second spring.

Furthermore, the included angle between the blocking lip and the second annular framework is 80-85 degrees.

Furthermore, the dustproof lip, the first main lip, the second main lip, the first groove, the first spring protection lip, the second groove, the second spring protection lip and the blocking lip are all made of rubber materials.

Furthermore, the first rubber ring, the second rubber ring, the third rubber ring, the dust lip, the first main lip, the second main lip, the first groove, the first spring protective lip, the second groove, the second spring protective lip and the blocking lip are of an integrated structure.

Furthermore, the first annular framework and the second annular framework are of an integral structure.

The utility model has the advantages that:

the utility model discloses a first main lip and the main lip of second seal oil and improve seal reliability and resistant oil pressure. Through the many rings of ripples of first rubber ring, reduce the resilience of assembly back skeleton oil blanket, guarantee sealing performance and ensure that the skeleton oil blanket is in correct assembly position. Through protecting the lip at first spring and second spring being equipped with, the stability after first spring and the installation of second spring is ensured, reduces the probability that the spring drops, and does not influence the spring and provide the power of hugging closely of compensation. The blocking lip arranged in an inclined mode achieves the effect of preventing the spring from falling off under the condition that the spring is not affected in installation, and when the hammer is used for knocking and installing the framework oil seal, the first spring and the second spring are effectively prevented from falling off, so that the sealing effect of the framework oil seal is guaranteed.

Drawings

Fig. 1 is a sectional structure view of the framework oil seal of the present invention.

Fig. 2 is a schematic view of a partial structure of a framework oil seal of the present invention.

In the figure: 1. the rubber ring comprises a first annular framework, a second annular framework, a first rubber ring, a second rubber ring, a corrugation, a second rubber ring, a third rubber ring, a dustproof lip, a first main lip, a second main lip, a first groove, a first spring protection lip, a second groove, a second spring protection lip, a first spring, a second groove, a second spring protection lip, a second spring, a first spring, a second groove, a second spring protection lip, a second.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

A framework oil seal is shown in figure 1 and comprises a first annular framework 1, a second annular framework 2, a first rubber ring 3, a second rubber ring 4, a third rubber ring 5, a dust lip 6, a first main lip 7, a second main lip 8, a first groove 9, a first spring protection lip 10, a second groove 11, a second spring protection lip 12, a first spring 13, a second spring 14 and a blocking lip 15.

One end of the second annular framework 2 is connected with one end of the first annular framework 1, the second annular framework 2 is perpendicular to the first annular framework 1, and the first annular framework 1 and the second annular framework 2 are of an integral structure. Be provided with first rubber ring 3 on first annular skeleton 1, be equipped with many rings of ripples 31 on the wall at first rubber ring 3 center of keeping away from first rubber ring 3, the surface of outer wall is wavy, and every circle of ripples 31 includes a protruding muscle of annular and an annular groove, and the center of protruding muscle of annular and annular groove is located the axis of skeleton oil blanket, and protruding muscle of annular and annular groove set up one on the other. The centers are all positioned on the axis of the framework oil seal.

Be provided with second rubber ring 4 on second annular skeleton 2, the one end (lower extreme) of first rubber ring 3 is connected to the one end of second rubber ring 4, third rubber ring 5 is connected to the other end of second rubber ring 4, third rubber ring 5 is on a parallel with first rubber ring 3, third rubber ring 5 perpendicular to second rubber ring 4, and first rubber ring 3, second rubber ring 4 and third rubber ring 5 are connected in order and are constituted C type or U type, and the cross-section is C type or U type promptly. Be equipped with dustproof lip 6, first main lip 7 and second main lip 8 on the third rubber ring 5, dustproof lip 6, first main lip 7 and second main lip 8 are located the wall that third rubber ring 5 is close to third rubber ring 5 center, and first main lip 7 is located the 6 upsides of dustproof lip, and second main lip 8 is located the 7 upsides of first main lip.

As shown in fig. 2, a first groove 9, a first spring retaining lip 10, a second groove 11, and a second spring retaining lip 12 are provided on the wall surface of the third rubber ring 5 on the opposite side of the first main lip 7, and the first groove 9, the first spring retaining lip 10, the second groove 11, and the second spring retaining lip 12 are provided in this order from bottom to top on the wall surface of the third rubber ring 5 away from the center thereof. The first groove 9 is connected with a first spring guard lip 10, the second groove 11 is connected with a second spring guard lip 12, and the first groove 9, the first spring guard lip 10, the second groove 11 and the second spring guard lip 12 are connected in sequence in the embodiment. The first groove 9 is arranged corresponding to the first main lip 7, and the second groove 11 is arranged corresponding to the second main lip 8. The first spring protection lip 10 and the second spring protection lip 12 protrude out of the wall surface where the first spring protection lip and the second spring protection lip are located, and the first groove 9 and the second groove 11 are recessed in the wall surface where the first spring protection lip and the second spring protection lip are located. The first spring protection lip 10 and the first groove 9 jointly form a first mounting groove, a first spring 13 is mounted in the first mounting groove as shown in figure 1, the first spring 13 is in contact with the first spring protection lip 10 and the first groove 9, and the contact area of the first spring 13 and the first mounting groove exceeds half of the surface area of the first spring 13. The first groove 9 and the second groove 11 are generally semicircular in the axial section of the framework oil seal, the contact area of the first spring 13 and the first mounting groove is half of the surface area of the first spring 13, and the part of the first spring 13, which exceeds half of the surface area of the first spring 13, is the contact area of the first spring 13 and the first spring protective lip 10. The first spring 13 protrudes further from the wall surface of the third rubber ring 5 away from the center thereof than the first spring retaining lip 10. The second spring guard lip 12 and the second groove 11 jointly form a second mounting groove, a second spring 14 is mounted in the second mounting groove, the second spring 14 contacts the second spring guard lip 12 and the second groove 11, and the contact area of the second spring 14 and the second mounting groove exceeds half of the surface area of the second spring 14. The second groove 11 and the second groove 11 are generally semicircular in the axial section of the framework oil seal, the contact area of the second spring 14 and the second mounting groove is half of the surface area of the second spring 14, and the part of the second spring 14, the contact area of which exceeds half of the surface area of the second spring 14, is the contact area of the second spring 14 and the second spring protective lip 12.

The retaining lip 15 is arranged on the upper surface of the second rubber ring 4, the retaining lip 15 is arranged in a manner of inclining towards the direction of the second spring 14, and the retaining lip 15 only needs to incline slightly, preferably, the included angle between the retaining lip 15 and the second annular framework 2 is 80-85 degrees, the distance between the retaining lip 15 and the first spring 13 is larger than 1/3 of the diameter of the first spring 13 and smaller than 2/3 of the diameter of the first spring 13, the distance between the retaining lip 15 and the second spring 14 is larger than 1/3 of the diameter of the second spring 14 and smaller than 2/3 of the diameter of the second spring 14, and the height of the retaining lip 15 is equal to or higher than that of the second spring 14, namely, the height of the retaining lip 15 is not. The distance between the first spring 13 and the wall surface of the blocking lip 15 close to the first spring 13 is greater than the distance between the first spring protecting lip 10 and the wall surface of the blocking lip 15 close to the first spring 13, and the value of the protrusion height of the first spring protecting lip 10 on the wall surface far away from the center of the third rubber ring 5 is smaller than the value of the protrusion height of the first spring 13 on the wall surface far away from the center of the third rubber ring 5. When the height of the retaining lip 15 is higher than that of the second spring 14, the distance between the second spring 14 and the wall surface of the retaining lip 15 adjacent to the second spring 14 may be greater than the distance between the second spring retaining lip 12 and the wall surface of the retaining lip 15 adjacent to the second spring 14. The blocking lip 15 is used as a blocking plate for preventing the spring from falling off, the inner side surface and the outer side surface of the annular blocking lip 15 can be parallel to each other, an arc-shaped groove I can be arranged on the blocking lip 15 corresponding to the first spring 13, and an arc-shaped groove II can be arranged on the blocking lip 15 corresponding to the second spring 14. The dustproof lip 6, the first main lip 7, the second main lip 8, the first groove 9, the first spring protective lip 10, the second groove 11, the second spring protective lip 12 and the blocking lip 15 are all made of rubber materials, and the first rubber ring 3, the second rubber ring 4, the third rubber ring 5, the dustproof lip 6, the first main lip 7, the second main lip 8, the first groove 9, the first spring protective lip 10, the second groove 11, the second spring protective lip 12 and the blocking lip 15 are of an integrated structure.

The utility model has the advantages that the sealing reliability is improved, the first main lip 7 and the second main lip 8 are adopted for sealing oil, even if the first main lip 7 is damaged, when oil seeps out through the first oil sealing lip, the second main lip 8 seals oil, and oil can not leak; adopt two springs of first spring 13 and second spring 14 simultaneously, improve the utility model discloses an resistant oil pressure. The utility model discloses a first rubber ring 3 keeps away from its central wall and is equipped with many rings of ripples 31, and the clout of first rubber ring 3 deformation when the lateral wall of ripple 31 form is impressed the assembly in order to hold the skeleton oil blanket to reduce the resilience of assembly back skeleton oil blanket, reduce the compression capacity of rubber, keep the elasticity of rubber, guarantee sealing performance and ensure that the skeleton oil blanket is in exact assembly position. The utility model discloses a through be equipped with first spring lip protector 10 on first recess 9, be equipped with second spring lip protector 12 on second recess 11, the increase is to the contact card and the area of first spring 13 and second spring 14, and the stability after the installation of first spring 13 and second spring 14 reduces the probability that the spring drops, and does not influence the spring and provide the power of holding tightly of compensation. Keep off lip 15 and prevent first spring 13 and second spring 14 to a certain extent, keep off lip 15 and first spring 13's interval setting, with second spring 14's interval setting, the realization that can be better can compromise the installation of spring again to first spring 13 and second spring 14's blockking. Because the blocking lip 15 has a certain deformation amount, if the distance is too large, the blocking failure spring is easy to fall off, namely, a better blocking effect is not achieved; if the distance is too small, the spring is difficult to mount or cannot be mounted, and the retaining lip 15 has a certain elastic deformation amount, so that when the first spring 13 and the second spring 14 are mounted, the retaining lip 15 is shifted in the direction opposite to the first groove 9 and the second groove 11, and the mounting can be realized. Through keeping off the slope setting of lip 15, the deformation that keeps off the lip 15 first half is easy for its latter half, can realize closing on the spring as far as under the condition that does not influence spring mounting, realize better spring anti-drop effect, sets up the installation and the anti-drop of taking into account two springs through the slope of keeping off lip 15. The utility model discloses a mounting means when the skeleton oil blanket is not injectd in the assembly is using the hammer to strike when installing the skeleton oil blanket, prevents first spring 13 and second spring 14 effectively and drops to the sealed effect of skeleton oil blanket has been guaranteed.

Claims

1. A skeleton oil blanket which characterized in that includes:

a first annular skeleton (1);

the second annular framework (2) is perpendicular to the first annular framework (1), and one end of the second annular framework (2) is connected with one end of the first annular framework (1);

the first rubber ring (3) is arranged on the first annular framework (1), and the wall surface of the first rubber ring (3) far away from the center of the first rubber ring is provided with a plurality of rings of corrugations (31);

a second rubber ring (4) arranged on the second annular framework (2), wherein one end of the second rubber ring (4) is connected with one end of the first rubber ring (3);

the third rubber ring (5) is connected with the other end of the second rubber ring (4), and the third rubber ring (5) is parallel to the first rubber ring (3) and vertical to the second rubber ring (4);

a dust-proof lip (6), a first main lip (7) and a second main lip (8) which are sequentially arranged on the wall surface of the third rubber ring (5) close to the center of the third rubber ring from bottom to top;

the first groove (9), the first spring guard lip (10), the second groove (11) and the second spring guard lip (12) are sequentially arranged on the wall surface, far away from the center of the third rubber ring (5), of the third rubber ring from the lower side, the first groove (9), the first spring guard lip (10), the second groove (11) and the second spring guard lip (12) are sequentially connected, the first groove (9) is arranged corresponding to the first main lip (7), the second groove (11) is arranged corresponding to the second main lip (8), the first spring guard lip (10) and the first groove (9) jointly form a first mounting groove, and the second spring guard lip (12) and the second groove (11) jointly form a second mounting groove;

a first spring (13) installed in the first installation groove, wherein the contact area of the first spring (13) and the first installation groove exceeds half of the surface area of the first spring (13);

a second spring (14) arranged in the second mounting groove, wherein the contact area of the second spring (14) and the second spring (14) groove exceeds half of the surface area of the second spring (14);

set up fender lip (15) on second rubber ring (4) upper surface, keep off lip (15) to second spring (14) direction slope setting, keep off the distance of lip (15) and first spring (13) and be greater than 1/3 of first spring (13) diameter and be less than 2/3 of first spring (13) diameter, keep off the distance of lip (15) and second spring (14) and be greater than 1/3 of second spring (14) diameter and be less than 2/3 of second spring (14) diameter, keep off the height of lip (15) and be equal to or be higher than second spring (14).

2. The framework oil seal as claimed in claim 1, wherein the included angle between the retaining lip (15) and the second annular framework (2) is 80-85 °.

3. The framework oil seal as claimed in claim 1, wherein the dust lip (6), the first main lip (7), the second main lip (8), the first groove (9), the first spring protection lip (10), the second groove (11), the second spring protection lip (12) and the blocking lip (15) are all made of rubber.

4. The framework oil seal as claimed in claim 3, wherein the first rubber ring (3), the second rubber ring (4), the third rubber ring (5), the dust lip (6), the first main lip (7), the second main lip (8), the first groove (9), the first spring protection lip (10), the second groove (11), the second spring protection lip (12) and the retaining lip (15) are of an integral structure.

5. A framework oil seal as defined in claim 1, wherein said first annular framework (1) and said second annular framework (2) are of a unitary construction.