CN210599677U

CN210599677U - Diaphragm type oil return buffer

Info

Publication number: CN210599677U
Application number: CN201921522433.8U
Authority: CN
Inventors: 赵小辉
Original assignee: Tianshui Pneumatic Machinery Co ltd
Current assignee: Tianshui Pneumatic Machinery Co ltd
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2020-05-22
Anticipated expiration: 2029-09-12

Abstract

The utility model belongs to the technical field of hydraulic pressure oil return buffering, a diaphragm type oil return buffer is disclosed, problem that exists in solving prior art oil return buffer, the device includes the buffer body, open at the middle part of buffer body has the runner, the outside portion circumferencial direction of buffer body is equipped with the cavity, be equipped with a plurality of inlet ports on the buffer body between runner and the cavity, be equipped with the buffering diaphragm in the cavity, the outside of buffering diaphragm can be dismantled and be equipped with the casing, buffer body one end can be dismantled and be equipped with the joint, the middle part that connects is equipped with the joint passageway, joint passageway and runner intercommunication, the other end of buffer body is equipped with well kenozooecium, hollow bolt is equipped with in the well kenozooecium, open on hollow bolt's upper portion has the logical oilhole, logical oilhole and runner. The utility model discloses simple structure, easy dismounting, return oil buffer structure is compacter, and the cushioning effect is sensitive effective, has improved hydraulic system's reliability and security well.

Description

Diaphragm type oil return buffer

Technical Field

The utility model relates to a hydraulic pressure oil return buffering technical field, concretely relates to diaphragm type oil return buffer.

Background

The oil return buffer has the characteristics of simple structure, high sensitivity and the like, and is widely applied to hydraulic systems of various industries, such as hydraulic rock drills, breaking hammers and the like. The conventional oil return damper is generally a mode that a joint is separated from a damper. The structure has the following disadvantages due to the fact that the joint is connected with an oil return port of a machine oil return pipe in a hydraulic system in a threaded mode, and then the joint is connected with a buffer, and the structure has the following advantages: (1) the phenomenon of oil leakage and even fracture caused by loose connection is easy to occur. (2) The structure is comparatively dispersed, and installation space is big, sometimes can influence the installation of other structures. The prior art cannot solve the above-mentioned technology.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems existing in the oil return buffer in the prior art and providing a diaphragm type oil return buffer with simple structure, safety and reliability.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a diaphragm type oil return buffer, including the buffer body, open at the middle part of buffer body has the runner, the outside portion circumferencial direction of buffer body is equipped with the cavity, be equipped with a plurality of inlet ports on the buffer body between runner and the cavity, buffer diaphragm is equipped with in the cavity, buffer diaphragm's the outside can be dismantled and is equipped with the casing, buffer body one end can be dismantled and is equipped with the joint, the middle part of joint is equipped with the joint channel, joint channel and runner intercommunication, the other end of buffer body is equipped with well kenozooecium, hollow bolt is equipped with in the well kenozooecium, hollow bolt's upper portion is opened there is the logical oilhole, logical oilhole and runner intercommunication, hollow bolt's lower part is.

Furthermore, one side of the shell and one side of the buffer diaphragm are positioned by utilizing a positioning convex shoulder arranged on the buffer body, the other side of the shell and the other side of the buffer diaphragm are provided with a gland, the gland is arranged on the buffer body, and the gland is contacted with the end surface of the joint.

Furthermore, round steel is welded on the shell, and a threaded plug is arranged in the round steel.

Furthermore, concave platforms are arranged on the inner sides of the two ends of the shell, and bulges matched with the concave platforms are arranged at the two ends of the buffer diaphragm.

Furthermore, an annular groove is formed at the communication position of the oil through hole and the flow passage on the buffer body, so that the returned hydraulic oil can better enter an oil return system.

Further, a combined gasket is arranged between the gland and the joint.

Furthermore, a first O-shaped sealing ring is arranged at the joint of the inner side of the gland and the buffer body.

Furthermore, a second O-shaped sealing ring is arranged at the contact position of the top of the round steel and the threaded plug.

Furthermore, a third O-shaped sealing ring is arranged at the contact position of the top of the hollow part and the hollow bolt and at the contact position of the side part of the hollow part and the lower part of the hollow bolt.

Further, the buffer diaphragm is made of neoprene.

Compared with the prior art, the utility model, following beneficial effect has:

the utility model discloses a buffer body of diaphragm type oil return buffer adopts the integral type structure, has reduced installation space, makes the structure compacter, the effectual hidden danger that reduces not hard up and the oil leak. The flow channel is arranged in the middle of the buffer body, the oil inlet holes are communicated through a plurality of uniform distribution between the flow channel and the cavity, the oil return port of the hydraulic equipment is connected with the buffer body through the hollow bolt, when hydraulic oil returns, oil enters the flow channel through the oil through hole in the hollow bolt, then the oil enters the buffer oil cavity through the flow channel, one side of the buffer diaphragm is oil, the other side of the buffer diaphragm is air, the oil compresses the air in the diaphragm and the sealed cavity, and therefore hydraulic pulse is counteracted, and the effect of a hydraulic system is stabilized. In the process, the compressed air has the function of mutual conversion of elastic potential energy and hydraulic energy. The absorption and release of energy effectively reduce the difference between the peak value and the valley value of the hydraulic pulse, reduce the vibration of the system and keep the stability of the system. The buffered hydraulic oil finally returns to the oil tank through a hydraulic pipeline connected to the rear end connector of the buffer body.

The utility model discloses simple structure, easy dismounting, return oil buffer structure is compacter, and the cushioning effect is sensitive effective, has improved hydraulic system's reliability and security well.

The utility model discloses with hollow bolt with buffer body lug connection on hydraulic equipment's machine, reduced a joint. The structure enables the whole structure of the buffer to be more compact and the fixation to be firmer, reduces the possibility of loosening and oil leakage, and increases the safety and reliability of the system. The hollow bolt not only has the effect of connecting and fixing, but also can ensure that hydraulic oil can well enter the oil return buffer through the hollow bolt.

The utility model discloses one side of casing and buffering diaphragm utilizes the location convex shoulder location with buffer body structure as an organic whole, and the opposite side of casing and buffering diaphragm pass through the gland and connect spacingly. The installation and the disassembly are more convenient.

The utility model discloses an installation screw thread end cap on the casing to whether have the oil leak in the air chamber in the inspection buffering diaphragm outside.

The utility model discloses a combination packing ring, first O shape sealing washer, second O shape sealing washer and third O shape sealing washer's effect is sealed.

The utility model discloses a both ends inboard of casing sets up concave station easy to assemble and location buffering diaphragm.

The hollow bolt of the utility model adopts 40Cr material and carries out quenching treatment, thereby improving the strength and hardness of the hollow bolt, prolonging the service life of the hollow bolt and improving the safety of the system.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the housing of the present invention.

Fig. 3 is a schematic view of the hollow portion in one end of the damper body according to the present invention.

Fig. 4 is a schematic connection diagram of the hollow bolt of the present invention.

Fig. 5 is a schematic view of the hollow bolt of the present invention.

Fig. 6 is a schematic view of the flow channel of fig. 1 from direction a-a according to the present invention.

The reference numerals have the following meanings: 1. a bumper body; 2. a joint; 3. a gland; 4. a housing; 5. a threaded plug; 6. a buffer membrane; 7. a hollow part; 8. a first O-ring seal; 9. a combination washer; 10. a second O-ring seal; 11. round steel; 12. a connector channel; 13. a flow channel; 14. a cavity; 15. an oil inlet hole; 16. an oil through hole; 17. a hollow part; 18. a third O-ring seal; 19. an annular groove; 20. a threaded segment; 21. positioning a shoulder; 22. a concave platform.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

As shown in fig. 1-6, a diaphragm type oil return buffer comprises a buffer body 1, a flow passage 13 is opened in the middle of the buffer body 1, a cavity 14 is arranged in the circumferential direction of the outer side of the buffer body 1, a plurality of oil inlet holes 15 are uniformly distributed on the buffer body 1 between the flow passage 13 and the cavity 14, a buffer diaphragm 6 is arranged in the cavity 14, a shell 4 is arranged on the outer side of the buffer diaphragm 6, one side of the shell 4 and one side of the buffer diaphragm 6 are positioned by a positioning shoulder 21 which is integrated with the buffer body 1, a gland 3 is arranged on the other side of the shell 4 and the other side of the buffer diaphragm 6, the gland 3 is arranged on the buffer body 1, and the gland 3 is contacted with the end face of a joint 2, the buffer diaphragm 6 used for positioning the shell 4 and the buffer diaphragm 6 is made of chloroprene rubber, concave platforms 22 are processed on the inner sides of two ends of the shell 4, and bulges matched with the concave platforms 22 are arranged at two ends of the buffer diaphragm 6. The damping diaphragm 6 is snapped into the housing 4.

A combined gasket 9 is arranged between the gland 3 and the joint 2, and a first O-shaped sealing ring 8 is arranged at the joint of the inner side of the gland 3 and the buffer body 1. The shell 4 is welded with round steel 11, threads are machined in the round steel 11, and a threaded plug 5 is arranged in a threaded inner hole. And a second O-shaped sealing ring 10 is arranged at the contact part of the top of the round steel 11 and the threaded plug 5.

One end of the buffer body 1 is provided with a joint 2 through threads arranged on the buffer body 1, and the outer side of the joint 2 is provided with an oil pipe which is used for connecting an oil return system through threads. The middle part of the joint 2 is provided with a joint channel 12, the joint channel 12 is communicated with the flow passage 13, the other end of the buffer body 1 is provided with a hollow part 17, a hollow bolt 7 is arranged in the hollow part 17, the top of the hollow bolt 7 is closed, the upper part of the hollow bolt 7 is provided with an oil through hole 16, the oil through hole 16 is communicated with the flow passage 13, and the communication part of the oil through hole 16 and the flow passage 13 on the buffer body 1 is provided with an annular groove 19. The lower part of the hollow bolt 7 is provided with a thread section 20, and the thread section 20 is in threaded connection with an oil return opening of hydraulic equipment. Third O-shaped sealing rings 18 are arranged at the contact part of the top of the hollow part 17 and the hollow bolt 7 and the contact part of the side part of the hollow part 17 and the lower part of the hollow bolt 7.

When in use, the oil return buffer body 1 is firstly connected with an oil return port of a machine in a hydraulic system through the threads 20 at the lower part of the hollow bolt 7. The upper portion of hollow bolt 7 and the top in well kenozooecium 17 in close contact with, hollow bolt 7 is firmly adorned in oil return buffer body 1, hydraulic oil in the machine enters into hollow bolt 7, enter into the ring channel 19 of buffer body 1 through oil feed hole 16 on hollow bolt 7, then hydraulic oil continues to enter into runner 13 of buffer body 1, enter into the buffer oil pocket of buffer diaphragm 6 one side through inlet port 15 on buffer body 1, the air in the sealed cavity of buffer diaphragm 6 and buffer diaphragm 6 opposite side is compressed to fluid, thereby reach and offset hydraulic pulse, the effect of steady hydraulic system. In the process, the compressed air has the function of mutual conversion of elastic potential energy and hydraulic energy. The absorption and release of energy effectively reduce the difference between the peak value and the valley value of the hydraulic pulse, reduce the vibration of the system and keep the stability of the system. The buffered hydraulic oil finally enters a hydraulic pipeline in threaded connection with the joint 2 through a joint channel 12 connected to the rear end joint 2 of the buffer body 1 and then returns to the oil tank.

Claims

1. A diaphragm type oil return buffer comprises a buffer body (1), and is characterized in that: the buffer is characterized in that a flow channel (13) is formed in the middle of the buffer body (1), a cavity (14) is formed in the circumferential direction of the outer side of the buffer body (1), a plurality of oil inlet holes (15) are formed in the buffer body (1) between the flow channel (13) and the cavity (14), a buffer diaphragm (6) is arranged in the cavity (14), a shell (4) is detachably arranged on the outer side of the buffer diaphragm (6), a connector (2) is detachably arranged at one end of the buffer body (1), a connector channel (12) is arranged in the middle of the connector (2), the connector channel (12) is communicated with the flow channel (13), a hollow portion (17) is formed in the other end of the buffer body (1), a hollow bolt (7) is arranged in the hollow portion (17), an oil through hole (16) is formed in the upper portion of the hollow bolt (7), the oil through hole (16) is communicated with the flow channel (13), the threaded section (20) is in threaded connection with an oil return port of the hydraulic equipment.

2. The diaphragm-type oil return damper according to claim 1, wherein: one side of the shell (4) and one side of the buffering diaphragm (6) are positioned by utilizing a positioning convex shoulder (21) arranged on the buffer body (1), a gland (3) is arranged on the other side of the shell (4) and the other side of the buffering diaphragm (6), the gland (3) is arranged on the buffer body (1), and the gland (3) is in contact with the end face of the joint (2).

3. The diaphragm-type oil return damper according to claim 2, wherein: the shell (4) is welded with round steel (11), and a threaded plug (5) is installed in the round steel (11).

4. A diaphragm type oil return damper according to claim 3, wherein: concave platforms (22) are arranged on the inner sides of the two ends of the shell (4), and bulges matched with the concave platforms (22) are arranged at the two ends of the buffer diaphragm (6).

5. The diaphragm-type oil return damper according to claim 4, wherein: an annular groove (19) is formed at the communication part of the oil through hole (16) and the flow passage (13) on the buffer body (1).

6. The diaphragm-type oil return damper according to claim 2, wherein: a combined gasket (9) is arranged between the gland (3) and the joint (2), and a first O-shaped sealing ring (8) is arranged at the joint of the inner side of the gland (3) and the buffer body (1).

7. A diaphragm type oil return damper according to claim 3, wherein: and a second O-shaped sealing ring (10) is arranged at the contact position of the top of the round steel (11) and the threaded plug (5).

8. The diaphragm-type oil return damper according to claim 1, wherein: and a third O-shaped sealing ring (18) is arranged at the contact part of the top of the hollow part (17) and the hollow bolt (7) and the contact part of the side part of the hollow part (17) and the lower part of the hollow bolt (7).

9. The diaphragm-type oil return damper according to claim 5, wherein: one end of the buffer body (1) is in threaded connection with the inner side of the joint (2), and threads are arranged on the outer side of the joint (2).

10. The diaphragm-type oil return damper according to claim 1, wherein: the buffer diaphragm (6) is made of chloroprene rubber.