High-reliability rubber oil bag for pump

Abstract

The utility model provides a high reliability rubber oil bag for pump relates to furniture technical field, including oil bag body, the oil bag body includes the pressure regulating thin wall and the sealing thick wall that are integratedly molded, the outer side wall of sealing thick wall is provided with the sealing groove, the outer wall top of sealing thick wall is provided with the sealing ring, and the sealing ring is provided with the sealing groove. A plurality of pressure guide grooves are formed in the inner side of the sealing thick wall, elastic corrugated walls are arranged at the positions, corresponding to the pressure guide grooves, of the sealing thick wall, the pressure guide grooves are formed in the upper sides and the lower sides of the sealing grooves, and extending convex rings which are sunken inwards are arranged at the positions, corresponding to the sealing grooves, of the inner wall of the sealing thick wall. And a supporting framework is inserted between the extending convex ring and the bottom of the sealing thick wall. According to the utility model, the elastic corrugated wall protrudes outwards and is extruded on the motor shell after being pressed, and the oil bag body is fixed on the motor shell through the auxiliary sealing groove.

Description

Technical Field

[0001] The utility model relates to the technical field of water pumps, in particular to a high-reliability rubber oil bag for pumps. Background Art

[0002] The oil bag for the water pump is the main component when the water pump is working. Its main function is to provide lubrication for the action of the water pump and provide pressure balance inside the water pump, while protecting the sealing mechanism inside the motor.

[0003] The existing oil bag is usually fixed by using the groove on the outer wall of the oil bag and the concave ring in the motor housing. When the pressure difference between the inside and outside of the oil bag is large, the sealed oil bag is easy to fall off, affecting the sealing effect of the motor and causing corrosion and damage to the internal circuit of the motor. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a high-reliability rubber oil bag for a pump, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A high-reliability rubber oil bladder for a pump comprises an oil bladder body, which is installed in a motor housing. The oil bladder body comprises an integrally formed pressure-regulating thin wall and a sealing thick wall. The outer wall of the sealing thick wall is provided with a sealing groove, and the top of the outer wall of the sealing thick wall is provided with a sealing ring. A plurality of pressure-conducting grooves are provided on the inner side of the sealing thick wall. The position of the sealing thick wall corresponding to the pressure-conducting groove is set as an elastic corrugated wall, and the pressure-conducting groove is set at the upper and lower sides of the sealing groove.

[0009] Preferably, an extended convex ring which is recessed inward is arranged at a position corresponding to the sealing groove on the inner wall of the sealing thick wall, a reinforcement groove 1 is provided on the lower side of the extended convex ring, a reinforcement groove 2 is provided on the bottom of the sealing thick wall, and a supporting frame is inserted between the reinforcement groove 1 and the reinforcement groove 2.

[0010] Preferably, the support frame includes a mounting ring, on which a support ring extending toward the reinforcement groove one and the reinforcement groove two is provided, the support ring is inserted into the reinforcement groove one and the reinforcement groove two respectively, and the mounting ring is fixed on the motor housing.

[0011] Preferably, a plurality of reinforcing ribs are longitudinally arranged in the reinforcing groove one and the reinforcing groove two, and the reinforcing ribs are respectively connected between the upper and lower side walls of the reinforcing groove one and the reinforcing groove two.

[0012] Preferably, a return spring is connected between the support ring and the pressure-adjusting thin wall.

[0013] Preferably, the oil bladder body is made of nitrile rubber material.

[0014] Preferably, an inwardly arranged concave ring is provided on the inner wall of the motor housing, and the concave ring is matched with the sealing groove in a concave-convex manner. The inner wall of the motor housing is provided with a plurality of corrugated grooves on the upper and lower sides of the concave ring, and the setting position of the corrugated grooves corresponds to the height of the elastic corrugated wall.

[0015] (III) Beneficial effects

[0016] The utility model provides a high-reliability rubber oil bag for a pump, which has the following beneficial effects:

[0017] 1. In the utility model, the concave-convex fit between the concave ring and the sealing groove fixes the oil bladder body in the motor housing. The sealing ring is in close contact with the inner wall of the motor housing, so that a cavity is formed between the motor housing and the sealing thick wall to block the external oil pressure and the cavity. A pressure guiding groove is provided on the inner side of the sealing thick wall, and an elastic corrugated wall is provided at the corresponding position of the pressure guiding groove. The oil bladder body is installed in the motor housing and is subjected to the external oil pressure. The inside of the oil bladder body is kept in a high-pressure state. The high-pressure air squeezes the elastic wave wall through the pressure guiding groove so that the outer convex is in close contact with the corrugated groove on the inner wall of the motor housing and conflicts with each other to form a concave-convex fit, and the auxiliary sealing groove and the concave ring fix the oil bladder body on the inner wall of the motor housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a high-reliability rubber oil bag for a pump of the utility model;

[0019] Figure 2 It is a cross-sectional view of an oil bag body of the utility model;

[0020] Figure 3 It is a schematic diagram of the assembly structure of the oil bag body and the motor housing in the utility model.

[0021] In the figure: 1. Oil bladder body; 101. Pressure regulating thin wall; 102. Sealing thick wall; 2. Motor housing; 3. Pressure guiding groove; 4. Elastic corrugated wall; 5. Sealing ring; 6. Support frame. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] The utility model provides a high-reliability rubber oil bag for a pump.

[0024] like Figure 1-3As shown, it includes an oil bladder body 1, which is made of nitrile rubber material. The oil bladder body 1 is installed in the motor housing 2. The inner wall of the motor housing 2 is provided with an inwardly arranged concave ring. The oil bladder body 1 includes an integrally formed pressure-regulating thin wall 101 and a sealing thick wall 102. The outer wall of the sealing thick wall 102 is provided with a sealing groove. The concave ring is matched with the sealing groove in a concave-convex manner. A sealing ring 5 is provided on the top of the outer wall of the sealing thick wall 102. A plurality of pressure-guiding grooves 3 are opened on the inner side of the sealing thick wall 102. The position of the sealing thick wall 102 corresponding to the pressure-guiding groove 3 is set to an elastic corrugated wall 4. The inner wall of the motor housing 2 is provided with a plurality of corrugated grooves on the upper and lower sides of the concave ring. The setting position of the corrugated groove corresponds to the height of the elastic corrugated wall 4. The pressure-guiding groove 3 is set to The positions are the upper and lower sides of the sealing groove, and the inner wall of the sealing thick wall 102 is provided with an extended convex ring that is recessed inward at the position of the sealing groove. A reinforcement groove 1 is provided on the lower side of the extended convex ring, and a reinforcement groove 2 is provided at the bottom of the sealing thick wall 102. A support skeleton 6 is inserted between the reinforcement groove 1 and the reinforcement groove 2, and the support skeleton 6 includes a mounting ring, and a support ring extending toward the reinforcement groove 1 and the reinforcement groove 2 is provided on the mounting ring. The support rings are respectively inserted into the reinforcement groove 1 and the reinforcement groove 2, and a plurality of reinforcing ribs are longitudinally arranged in the reinforcement groove 1 and the reinforcement groove 2, and the reinforcing ribs are respectively connected between the upper and lower side walls of the reinforcement groove 1 and the reinforcement groove 2, and the mounting ring is fixed on the motor housing 2, and a reset spring is connected between the support ring and the pressure regulating thin wall 101.

[0025] Working principle: In the utility model, the oil bladder body 1 is installed in the motor housing 2, the concave ring and the sealing groove are matched concavely and convexly, and the sealing ring 5 is in contact with the inner wall of the motor housing 2, so that a cavity is formed between the motor housing 2 and the outer wall of the sealing thick wall 102 on the lower side of the sealing ring 5, so that the cavity and the external high oil pressure are not synchronized, and the oil pressure squeezes the pressure regulating thin wall 101 to be concave, so that the internal space of the oil bladder body 1 is reduced, the pressure is increased, and a pressure difference occurs between the cavity and the inside of the oil bladder. The internal pressure of the oil bladder body 1 squeezes the elastic corrugated wall 4 through the pressure-conducting groove 3 to bulge outward and squeeze it tightly on the corrugated groove. The auxiliary concave ring and the sealing groove squeeze the oil bladder body 1 in the motor housing 2 in the radial direction to prevent the oil bladder body 1 from detaching from the motor housing 2 under high pressure, thereby ensuring the sealing of the motor.

[0026] In addition, a support skeleton 6 is provided so that the sealing thick wall 102 of the sealing groove portion arranged in the middle of the plurality of elastic corrugated walls 4 can move together with the elastic corrugated wall 4, thereby preventing the sealing groove from being unstable. At the same time, the mounting ring of the support skeleton 6 is installed on the motor housing 2, so that the oil sac body 1 can be fixed in the axial direction. By fixing the oil sac body 1 in the axial and radial directions respectively, the oil sac body 1 can be firmly locked on the inner wall of the motor housing 2.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-reliability rubber oil bag for a pump, comprising an oil bag body, the oil bag body being installed in a motor housing, characterized in that: The oil bag body includes an integrally formed pressure-regulating thin wall and a sealing thick wall, the outer wall of the sealing thick wall is provided with a sealing groove, the top of the outer wall of the sealing thick wall is provided with a sealing ring, a plurality of pressure-conducting grooves are opened on the inner side of the sealing thick wall, the position of the sealing thick wall corresponding to the pressure-conducting groove is set as an elastic corrugated wall, and the pressure-conducting groove is set at the upper and lower sides of the sealing groove.

2. The high reliability rubber oil bag for pump according to claim 1, characterized in that: An extended convex ring which is recessed inward is arranged at a position corresponding to the sealing groove on the inner wall of the sealing thick wall, a reinforcement groove 1 is provided on the lower side of the extended convex ring, a reinforcement groove 2 is provided on the bottom of the sealing thick wall, and a supporting frame is inserted between the reinforcement groove 1 and the reinforcement groove 2.

3. A high reliability rubber oil bag for a pump according to claim 2, characterized in that: The support frame includes a mounting ring, on which a support ring extending toward the first reinforcement groove and the second reinforcement groove is arranged, and the support ring is inserted into the first reinforcement groove and the second reinforcement groove respectively, and the mounting ring is fixed on the motor housing.

4. The high reliability rubber oil bag for pump according to claim 3, characterized in that: A plurality of reinforcing ribs are longitudinally arranged in the reinforcing groove 1 and the reinforcing groove 2, and the reinforcing ribs are respectively connected between the upper and lower side walls of the reinforcing groove 1 and the reinforcing groove 2.

5. The high reliability rubber oil bag for pump according to claim 4, characterized in that: A return spring is connected between the support ring and the pressure regulating thin wall.

6. The high reliability rubber oil bag for pump according to claim 5, characterized in that: The oil bag body is made of nitrile rubber material.

7. The high reliability rubber oil bag for pump according to claim 6, characterized in that: The inner wall of the motor housing is provided with an inwardly arranged concave ring, which is matched with the sealing groove in a concave-convex manner. The inner wall of the motor housing is provided with a plurality of corrugated grooves on both sides of the concave ring, and the setting position of the corrugated grooves corresponds to the height of the elastic corrugated wall.

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