CN212643207U

CN212643207U - Liquid filling valve

Info

Publication number: CN212643207U
Application number: CN202021346679.7U
Authority: CN
Inventors: 杨新军; 孙凯捷; 曹薛华
Original assignee: Shanghai Hanwei Hydraulic Technology Co ltd
Current assignee: Shanghai Hanwei Hydraulic Technology Co ltd
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2021-03-02
Anticipated expiration: 2030-07-09

Abstract

The application relates to the field of hydraulic valves, in particular to a liquid filling valve which comprises a valve body, wherein a sliding channel is arranged in the valve body along the axial direction of the valve body, an external control valve core is arranged in the sliding channel in a sliding mode, a main valve core is arranged at one end, in the sliding direction, of the external control valve core, part of the main valve core is located in the sliding channel, a main reset piece is connected between the main valve core and the valve body, an external control reset piece is connected between the external control valve core and the valve body, a baffle is arranged at one end, away from the direction of the external control valve core, of the main valve core, a cavity is arranged at one side, close to the baffle, of; the outer side wall of the valve body is provided with a plurality of liquid through holes communicated with the cavity; the method is characterized in that: the valve body is kept away from the one end of baffle and can be dismantled and be provided with the valve barrel, and be provided with the trepanning that communicates each other with the slip channel on the valve barrel. This application has valve body and valve barrel and can dismantle the connection, both has been adapted to the hydro-cylinder, is adapted to the oil cake again, the better effect of adaptability.

Description

Liquid filling valve

Technical Field

The application relates to the field of hydraulic valves, in particular to a prefill valve.

Background

The prior liquid charging valve is a hydraulic control one-way valve, one direction stops flow, the other direction freely circulates, and the pilot action is realized by hydraulic pressure of a control valve core supplied by an oil port, so that a main valve is directly opened. Such valves are designed for a stack system, i.e. a wide variety of other types of hydraulic valves can be stacked on a base part.

The current chinese utility model patent publication No. CN202391866U discloses a prefill valve, in particular a normally closed prefill valve for a bending machine; comprises a valve body and a valve core which can do axial movement in a channel in the valve body. The bottom of the valve body is provided with a convex cavity, the outer wall of the valve body is provided with a through hole, and the through hole is communicated with the convex cavity at the bottom of the valve body; one end of the valve core facing downwards extends into a disc-shaped valve disc, and when the valve disc is tightly attached to the valve body, the through hole is not communicated with the lower half part of the convex-shaped cavity of the valve body; a piston is arranged in the internal channel of the valve body and is sleeved at the upper end of the valve core; the valve body is connected with the piston through a first spring; the upper part of the valve core is also clamped with a spring seat, and the spring seat is connected with the valve body through a second spring. The utility model discloses a compact structure, simple to operate, sealed reliability is high.

The above prior art solutions have the following drawbacks: when the liquid filling valve is used, the liquid filling valve can only be embedded in an oil block for use, and the applicability of the liquid filling valve is poor.

SUMMERY OF THE UTILITY MODEL

In order to improve the defect of relevant problem, the application provides a prefill valve, and it has valve body and valve barrel and can dismantle the connection, both is adapted to the hydro-cylinder, is adapted to the oil cake again, the better effect of suitability.

The application provides a prefill valve adopts following technical scheme:

a liquid charging valve comprises a valve body, wherein a sliding channel is arranged in the valve body along the axial direction of the valve body, an external control valve core is arranged in the sliding channel in a sliding mode, a main valve core is arranged at one end of the external control valve core along the sliding direction of the external control valve core, part of the main valve core is located in the sliding channel, a main reset piece is connected between the main valve core and the valve body, an external control reset piece is connected between the external control valve core and the valve body, a baffle is arranged at one end, away from the direction of the external control valve core, of the main valve core, a cavity is formed in one side, close to the baffle; the outer side wall of the valve body is provided with a plurality of liquid through holes communicated with the cavity; the valve body is kept away from the one end of baffle and can be dismantled and be provided with the valve barrel, and be provided with the trepanning that communicates each other with the slip channel on the valve barrel.

Through adopting above-mentioned technical scheme, when the prefill valve is using, let in outer accuse fluid into sliding channel, and then promote outer accuse case by outer accuse fluid, outer accuse case compression outer accuse piece that resets, and then outer accuse case butt promotes main valve core, main valve core compression main piece that resets, main valve core drives the baffle and moves, and then produces the gap between baffle and the cavity, high-pressure region fluid gets into the cavity through the gap that baffle and cavity produced, and then gets into the through-liquid hole through the cavity, and then discharges by the through-liquid hole. When the valve sleeve is detached from the valve body, the liquid filling valve can be arranged on the oil block; when the valve sleeve is arranged on the valve body, the liquid filling valve can be arranged on the oil cylinder, and the liquid filling valve is suitable for the oil cylinder and the oil block, so that the applicability of the liquid filling valve is better.

Preferably, a sealing groove is formed in the side wall, close to the valve sleeve, of the valve body, a sealing ring is arranged in the sealing groove, the sealing ring and the valve sleeve are mutually abutted, and the sealing ring is mutually abutted with the bottom of the sealing groove.

By adopting the technical scheme, when the liquid filling valve is applied to the oil cylinder, the sealing groove is used for accommodating the sealing ring, and the sealing ring is limited to a certain extent; the sealing ring is favorable for improving the sealing property between the valve sleeve and the valve body, preventing the leakage of oil liquid between the valve sleeve and the valve body and improving the application stability of the liquid filling valve.

Preferably, the two sides of the sealing ring are provided with check rings for protecting the sealing ring, and the check rings are positioned in the sealing groove.

Through adopting above-mentioned technical scheme, when the prefill valve is using, the retaining ring is favorable to preventing that the sealing washer from producing excessive deformation, is favorable to protecting the sealing washer, prolongs the life of sealing washer, and plays certain limiting displacement to the sealing washer.

Preferably, a clamping groove is formed in the side wall, away from the baffle, of the valve sleeve, and a clamping ring used for sealing the valve sleeve and the adjacent component is arranged in the clamping groove.

Through adopting above-mentioned technical scheme, when the hydro-cylinder was used to the prefill valve, the joint groove was used for holding the joint circle, played certain limiting displacement to the joint circle. The clamping ring is beneficial to improving the sealing performance between the valve sleeve and the adjacent part, preventing the leakage of oil liquid between the valve sleeve and the adjacent part and improving the application stability of the liquid filling valve.

Preferably, one end of the sliding channel, which is far away from the baffle, is detachably and fixedly provided with an external control plug, and one end of the external control plug, which is close to the baffle, is abutted against the external control valve core; the external control plug is provided with an external control hole along the sliding direction of the external control valve core, and the external control hole is communicated with the sliding channel.

By adopting the technical scheme, when the prefill valve is used, the external control oil enters the sliding channel through the external control hole, and then the external control oil pushes the external control valve core to move. The external control plug is abutted to the external control valve core, so that the external control valve core is prevented from sliding from the sliding channel, the sliding of the external control valve core when not used is prevented, and the stability of the liquid charging valve in integral application is improved.

Preferably, the main valve core comprises a main valve part and a positioning part, the positioning part is arranged at one end, far away from the baffle, of the main valve part, the main valve part and the positioning part are detachably and fixedly connected, and the main reset piece is connected and arranged between the positioning part and the valve body.

By adopting the technical scheme, when the external control valve core pushes the main valve core to move, the external control valve core drives the main valve part to move, then the main valve part drives the positioning part to move, the positioning part pushes the main reset part, and the main reset part generates compression. When the main piece that resets is compressed repeatedly for a long time to the location portion and is caused the damage, fixed connection can be dismantled to location portion and main valve portion, is convenient for change location portion, need not to change the main valve core, is favorable to saving the resource.

Preferably, the external control valve core comprises a sliding part and a crimping part, the sliding part is sleeved at one end, away from the main valve core, of the external control reset part, the crimping part is arranged at one end, away from the baffle, of the sliding part, the end, away from the baffle, of the external control reset part is abutted against the crimping part, and a limiting groove which is spliced with one end part, close to the baffle, of the external control reset part is arranged in the valve body.

Through adopting above-mentioned technical scheme, when outer accuse fluid promotes outer accuse case and removes, outer accuse fluid promotes crimping portion and removes, and then crimping portion drive sliding part and remove, and crimping portion promote outer accuse piece that resets and produce the compression. The sliding part is favorable for preventing the external control reset piece and the sliding part from generating friction to cause abrasion, the external control reset piece is favorable for protection, an end part of the external control reset piece close to the baffle is plugged into the limiting groove, the external control reset piece is favorable for limiting, the stability of the external control reset piece in compression and reply is improved, and the stability of the prefill valve is favorable for improving.

Preferably, the baffle is along the lateral wall of self circumference and the open end butt of cavity, and the butt department of baffle and cavity all sets up to spacing oblique angle.

Through adopting above-mentioned technical scheme, when the open end butt of baffle and cavity, spacing oblique angle is favorable to further spacing to the baffle, makes the baffle be difficult for rocking, is favorable to the sealed cavity of baffle.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the prefill valve is used, external control oil is introduced into the sliding channel, the external control valve core is pushed by the external control oil, the external control valve core compresses the external control reset part, the external control valve core pushes the main valve core in a butting mode, the main valve core compresses the main reset part, the main valve core drives the baffle to move, a gap is generated between the baffle and the cavity, the high-pressure area oil enters the cavity through the gap generated by the baffle and the cavity, then enters the liquid through hole through the cavity, and then is discharged through the liquid through hole. When the valve sleeve is detached from the valve body, the liquid filling valve can be arranged on the oil block; when the valve sleeve is arranged on the valve body, the liquid filling valve can be arranged on the oil cylinder, and the liquid filling valve is suitable for both the oil cylinder and the oil block and has good applicability;

2. when the liquid filling valve is applied to the oil cylinder, the sealing groove is used for accommodating the sealing ring and has a certain limiting effect on the sealing ring; the sealing ring is beneficial to improving the sealing property between the valve sleeve and the valve body, preventing oil from leaking between the valve sleeve and the valve body and improving the application stability of the liquid filling valve;

3. when the prefill valve is used, the check ring is favorable for preventing the sealing ring from generating excessive deformation, is favorable for protecting the sealing ring, prolongs the service life of the sealing ring, and plays a certain limiting role in the sealing ring.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

fig. 2 is a schematic cross-sectional view of an embodiment of the present application.

Description of reference numerals: 1. a valve body; 2. a slide channel; 21. a bonding section; 22. a penetration part; 3. an external control valve core; 31. a sliding part; 32. a crimping part; 4. an external control reset piece; 5. a main valve element; 51. a main valve section; 52. a positioning part; 6. a main reset member; 7. a baffle plate; 8. a cavity; 9. a liquid through hole; 10. limiting the bevel angle; 11. a limiting groove; 12. a valve housing; 13. trepanning; 14. a sealing groove; 15. a seal ring; 16. a retainer ring; 17. a clamping groove; 18. a clamping ring; 19. an external control plug; 20. and (4) an external control hole.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses prefill valve. Referring to fig. 1 and 2, a prefill valve includes valve body 1 that is the i-shaped, and valve body 1 sets up the slip cross-section along self axial and is circular shape slide channel 2, and slide channel 2 includes that the slip cross-section is circular shape laminating portion 21 and wears to establish the cross-section and wear to establish portion 22 for circular shape, and it is cup-shaped outer accuse case 3 to slide to be provided with in laminating portion 21, and the connection is provided with outer accuse 4 that resets between outer accuse case 3 and the valve body 1, and this embodiment outer accuse 4 that resets can be the spring. The external control reset piece 4 is used for controlling the reset of the external control valve core 3.

Outer accuse case 3 is provided with along the one end of self slip direction and is cylindric main valve core 5, and main valve core 5 wears to establish portion 22, and the part is located laminating portion 21, connects between main valve core 5 and the valve body 1 and is provided with main piece 6 that resets, and this embodiment owner resets 6 and can be the spring. Main reset element 6 is used to control the resetting of main spool 5.

A disc-shaped baffle 7 is arranged at one end of the main valve core 5 far away from the direction of the external control valve core 3, a cavity 8 with a circular liquid passing section is arranged at one side of the valve body 1 close to the baffle 7, and the opening ends of the baffle 7 and the cavity 8 are mutually abutted; and the abutting parts of the baffle 7 and the cavity 8 are abutted against each other by the elastic restoring force of the main restoring piece 6. Be provided with a plurality of logical liquid holes 9 that communicate each other with cavity 8 on the lateral wall of valve body 1, and logical liquid hole 9 evenly is circular distribution, and this embodiment leads to liquid hole 9 can be 8. Baffle 7 along the lateral wall of self circumference and the open end butt of cavity 8, and the butt department of baffle 7 and cavity 8 all sets up to spacing bevel 10. When the open end butt of baffle 7 and cavity 8, spacing oblique angle 10 is favorable to further spacing to baffle 7, makes baffle 7 be difficult for rocking, is favorable to the sealed cavity 8 of baffle 7.

The external control valve core 3 comprises a cylindrical sliding part 31 and a cylindrical crimping part 32, the sliding part 31 is sleeved at one end, away from the main valve core 5, of the external control reset piece 4, the crimping part 32 is arranged at one end, away from the baffle plate 7, of the sliding part 31, the end, away from the baffle plate 7, of the external control reset piece 4 is abutted to the crimping part 32, and a limiting groove 11 which is connected with one end, close to the baffle plate 7, of the external control reset piece 4 in an inserting mode is formed in the valve body 1. When the external control oil liquid pushes the external control valve core 3 to move, the external control oil liquid pushes the press-connection part 32 to move, and then the press-connection part 32 drives the sliding part 31 to move, and the press-connection part 32 compresses the external control reset part 4. The sliding portion 31 is beneficial to preventing the external control reset piece 4 and the sliding portion 31 from being abraded due to friction, and is beneficial to protecting the external control reset piece 4. The limiting groove 11 which is inserted at one end part of the external control reset piece 4 close to the baffle 7 is beneficial to limiting the external control reset piece 4, improving the stability of the external control reset piece 4 in compression and recovery and improving the stability of the prefill valve.

The main valve core 5 includes a main valve part 51 having a cylindrical shape and a positioning part 52 having a cylindrical shape, the positioning part 52 is provided at an end of the main valve part 51 away from the flapper 7, the main valve part 51 and the positioning part 52 are detachably fixed by a screw connection, and the main restoring member 6 is provided between the positioning part 52 and the valve body 1. When the external control valve core 3 pushes the main valve core 5 to move, the external control valve core 3 drives the main valve part 51 to move, and then the main valve part 51 drives the positioning part 52 to move, the positioning part 52 pushes the main resetting piece 6, and the main resetting piece 6 is compressed. When the positioning portion 52 is damaged due to repeated compression of the main restoring member 6 for a long time, the positioning portion 52 and the main valve portion 51 are detachably and fixedly connected, so that the positioning portion 52 can be replaced conveniently without replacing the main valve element 5, and resource saving is facilitated.

One end of the valve body 1, which is far away from the baffle 7, is detachably provided with a cup-shaped valve sleeve 12 through insertion, a side wall of the valve sleeve 12, which is far away from the external control valve core 3, is provided with a sleeve hole 13 communicated with the sliding channel 2, and the liquid passing cross section of the sleeve hole 13 is circular. When the valve sleeve 12 is detached from the valve body 1, the liquid filling valve can be installed on an oil block; when the valve sleeve 12 is arranged on the valve body 1, the liquid filling valve can be arranged on the oil cylinder, and the liquid filling valve is suitable for both the oil cylinder and the oil block and has good applicability.

A sealing groove 14 with a semicircular sealing section is formed in the side wall, close to the valve sleeve 12, of the valve body 1, an annular sealing ring 15 is arranged in the sealing groove 14, the sealing ring 15 and the valve sleeve 12 are abutted against each other, the sealing ring 15 and the bottom of the sealing groove 14 are abutted against each other, and the sealing ring 15 is preferably made of nitrile rubber. The sealing groove 14 is used for accommodating a sealing ring 15 and plays a certain limiting role in the sealing ring 15; the sealing ring 15 is beneficial to improving the sealing performance between the valve sleeve 12 and the valve body 1, preventing the leakage of oil from between the valve sleeve 12 and the valve body 1 and improving the stability of the prefill valve during application.

The two sides of the sealing ring 15 are provided with retaining rings 16 for protecting the sealing ring 15, the retaining rings 16 are annular, the retaining rings 16 are positioned in the sealing groove 14, and the material of the clamping ring 18 in this embodiment is preferably polytetrafluoroethylene. The retainer ring 16 is beneficial to preventing the sealing ring 15 from being excessively deformed, protecting the sealing ring 15, prolonging the service life of the sealing ring 15 and limiting the sealing ring 15 to a certain extent.

A clamping groove 17 with a semicircular clamping section is formed in one side wall, away from the baffle 7, of the valve sleeve 12, a clamping ring 18 used for sealing between the valve sleeve 12 and an adjacent component is arranged in the clamping groove 17, the clamping ring 18 is annular, and the clamping ring 18 is preferably made of polytetrafluoroethylene. The clamping groove 17 is used for accommodating a clamping ring 18 and plays a certain limiting role in the clamping ring 18. The snap ring 18 is beneficial to improving the sealing performance between the valve sleeve 12 and adjacent parts, preventing oil from leaking between the valve sleeve 12 and the adjacent parts and improving the application stability of the liquid filling valve.

One end of the attaching part 21, which is far away from the baffle 7, is provided with a cylindrical external control plug 19, the attaching part 21 and the external control plug 19 are detachably fixed through threaded connection, and one end of the external control plug 19, which is close to the baffle 7, is abutted against the external control valve element 3; the external control plug 19 is provided with an external control hole 20 with a circular liquid passing section along the sliding direction of the external control valve core 3, and the external control hole 20 is communicated with the sliding channel 2. When the liquid charging valve is used, external control oil enters the sliding channel 2 through the external control hole 20, and then the external control oil pushes the external control valve core 3 to move. The external control plug 19 is abutted to the external control valve core 3, so that the external control valve core 3 is prevented from sliding from the sliding channel 2, the sliding of the external control valve core 3 when not used is prevented, and the stability of the whole liquid filling valve in application is improved.

The implementation principle of a prefill valve of the embodiment of the application is as follows: when the prefill valve is using, the outer accuse fluid gets into laminating portion 21 through the outer accuse hole 20 of outer accuse end cap 19, and then promote crimping portion 32 of outer accuse case 3 by outer accuse fluid, crimping portion 32 drives sliding part 31 and moves simultaneously, crimping portion 32 compresses outer accuse reset piece 4, and then crimping portion 32 butt promotes main valve element 5, location portion 52 compresses main reset piece 6, main valve element 5 drives baffle 7 and moves, and then produce the gap between baffle 7 and the cavity 8, high-pressure region fluid passes through the gap that baffle 7 and cavity 8 produced and gets into cavity 8, and then get into through cavity 8 and lead to liquid hole 9, and then discharge by leading to liquid hole 9. After the oil flows, the external control reset piece 4 in the compression state pushes the external control valve core 3 to reset by using the self elastic restoring force, the main reset piece 6 in the compression state pushes the main valve core 5 to reset by using the self elastic restoring force, and then the baffle 7 is abutted to the opening of the cavity 8. When the valve sleeve 12 is detached from the valve body 1, the liquid filling valve can be installed on an oil block; when the valve sleeve 12 is arranged on the valve body 1, the liquid filling valve can be arranged on the oil cylinder, and the liquid filling valve is suitable for both the oil cylinder and the oil block and has good applicability.

The above is a preferred embodiment of the present application, and the scope of protection of the present application is not limited by the above, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A liquid charging valve comprises a valve body (1), wherein a sliding channel (2) is axially arranged on the valve body (1) along the self, an external control valve core (3) is arranged in the sliding channel (2) in a sliding mode, a main valve core (5) is arranged at one end, in the sliding direction, of the external control valve core (3), part of the main valve core (5) is located in the sliding channel (2), a main reset piece (6) is connected between the main valve core (5) and the valve body (1), an external control reset piece (4) is connected between the external control valve core (3) and the valve body (1), a baffle (7) is arranged at one end, away from the external control valve core (3), of the main valve core (5), a cavity (8) is arranged at one side, close to the baffle (7), of the valve body (1), and the opening ends of the baffle (7) and the cavity; the outer side wall of the valve body (1) is provided with a plurality of liquid through holes (9) which are communicated with the cavity (8); the method is characterized in that: one end, far away from the baffle (7), of the valve body (1) is detachably provided with a valve sleeve (12), and a sleeve hole (13) communicated with the sliding channel (2) is formed in the valve sleeve (12).

2. A prefill valve according to claim 1, wherein: the valve body (1) is provided with seal groove (14) on being close to the lateral wall of valve barrel (12), be provided with sealing washer (15) in seal groove (14), and sealing washer (15) and valve barrel (12) butt each other, the mutual butt in bottom of sealing washer (15) and seal groove (14).

3. A prefill valve according to claim 2, wherein: and two sides of the sealing ring (15) are provided with check rings (16) used for protecting the sealing ring (15), and the check rings (16) are positioned in the sealing groove (14).

4. A prefill valve according to claim 1, wherein: the valve sleeve (12) is provided with a clamping groove (17) on the side wall far away from the baffle (7), and a clamping ring (18) used for sealing the oil cylinder and the valve body (1) is arranged in the clamping groove (17).

5. A prefill valve according to claim 1, wherein: one end of the sliding channel (2) far away from the baffle (7) is detachably and fixedly provided with an external control plug (19), and one end, close to the baffle (7), of the external control plug (19) is abutted against the external control valve core (3); the external control plug (19) is provided with an external control hole (20) along the sliding direction of the external control valve core (3), and the external control hole (20) is communicated with the sliding channel (2).

6. A prefill valve according to claim 1, wherein: main valve core (5) include main valve portion (51) and location portion (52), location portion (52) set up the one end of keeping away from baffle (7) in main valve portion (51), main valve portion (51) and location portion (52) can dismantle fixed connection, main piece (6) that resets are connected and are set up between location portion (52) and valve body (1).

7. A prefill valve according to claim 1, wherein: the external control valve core (3) comprises a sliding part (31) and a crimping part (32), the sliding part (31) is sleeved at one end, away from the main valve core (5), of the external control reset part (4), the crimping part (32) is arranged at one end, away from the baffle plate (7), of the sliding part (31), the external control reset part (4) is abutted to the crimping part (32) at one end, away from the baffle plate (7), of the external control reset part (4), and a limiting groove (11) which is connected with one end, close to the baffle plate (7), of the external control reset part (4) in an inserting mode is formed in the valve body (.

8. A prefill valve according to claim 1, wherein: baffle (7) are along the open end butt of self circumferential lateral wall and cavity (8), and the butt department of baffle (7) and cavity (8) all sets up to spacing bevel (10).