CN212899880U

CN212899880U - Hydraulic valve

Info

Publication number: CN212899880U
Application number: CN202021620401.4U
Authority: CN
Inventors: 朱子刚
Original assignee: Jinzhong Hongtai Hydraulic Machinery Co ltd
Current assignee: Jinzhong Hongtai Hydraulic Machinery Co ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2021-04-06
Anticipated expiration: 2030-08-06

Abstract

The utility model relates to the technical field of valve manufacturing, in particular to a hydraulic valve, which does not need to be provided with a control oil circuit independently, thereby saving the cost; the main valve body hole in the main valve body is provided with five groups of undercut grooves, three groups of convex shoulders are arranged on the main valve core, the main valve core penetrates through the main valve body hole, two sides of the main valve body are connected with a connecting sleeve and an end cover, the middle of the connecting sleeve is provided with a round hole, two ends of the main valve core are provided with guide columns, a sliding groove is arranged inside the end cover, a plunger is arranged in the sliding groove, a jack post is arranged on the plunger, one side of the plunger is provided with a blind groove, a spring is arranged in the blind groove, a main oil return opening is machined in the bottom of the main valve body, a first oil opening, a main oil inlet and a second oil opening are machined in the sliding groove, a control oil return opening and a control oil inlet are arranged in the sliding groove, a first connecting opening and a second connecting opening are arranged on the.

Description

Hydraulic valve

Technical Field

The utility model relates to a technical field, especially a hydraulic valve are made to valve.

Background

As is well known, a directional control valve with more than two flow forms and more than two oil ports is a valve for realizing the circulation, cutting off and reversing of oil, pressure unloading and sequential action control, mainly depends on the relative motion of a valve core and a valve body to control, and is divided into a rotary valve type and a slide valve type, the valve core is divided into two positions, three positions and the like according to the number of working positions of the valve core staying in the valve body, the valve core is divided into two-way, three-way, four-way, six-way and the like according to the number of oil passages connected with the valve body, manual operation, motor operation, electric operation, hydraulic operation, electro-hydraulic operation and the like according to the motion mode of the valve core, when control oil in a hydraulic reversing valve enters from a control port, the valve core moves under the driving of the oil to communicate the oil ports, thereby realizing the circulation, cutting off and reversing of the oil, the existing, the piping is inconvenient to set, and the cost of the apparatus increases.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a to prior art not enough, the utility model provides a control oil directly draws in the valve, need not to set up control oil circuit alone, practices thrift the hydraulic valve of cost.

(II) technical scheme

In order to achieve the above object, the present invention provides a technical solution, which comprises a main valve body and a main valve core, wherein a cylindrical main valve body hole is arranged in the main valve body, the main valve body hole is through from left to right, five groups of annular undercut grooves are uniformly arranged in the main valve body hole, the five groups of undercut grooves are respectively a first undercut groove, a second undercut groove, a third undercut groove, a fourth undercut groove and a fifth undercut groove from left to right, three groups of convex shoulders matched with the main valve body hole are uniformly arranged on the main valve core, the main valve core passes through the main valve body in the main valve core hole, the present invention further comprises two groups of connecting sleeves and two groups of end covers, the two groups of connecting sleeves are respectively connected with the left and right sides of the main valve body through a stepped structure, a round hole is arranged in the middle of the connecting sleeves, the left and right ends of the main valve core are respectively provided with a guide column matched with the round hole, the guide column extends into the round, a cylindrical chute is arranged in the end cover, a plunger is arranged in the chute in a sliding manner, a top pillar matched with the round hole is arranged on one side, close to the main valve core, of the plunger, the top pillar extends into the round hole and is in contact with the guide pillar, a blind groove is arranged on one side, far away from the main valve core, of the plunger, a spring is arranged in the blind groove, two ends of the spring are respectively attached to the side wall of the blind groove and the side wall of the chute, a main oil return port, a first oil port, a main oil inlet port and a second oil port are machined in the bottom of the main valve body from left to right and are respectively communicated with the first cutting groove, the second cutting groove and the third cutting groove, the fourth cutting groove, the first cutting groove is communicated with the fifth cutting groove, a control oil return port and a control oil inlet port are respectively arranged at the top and the bottom of one side, far away from the main valve core, of the chute, and a first, the left end and the right end of the main valve body are respectively provided with a third connecting port and a fourth connecting port which are respectively communicated with the first connecting port and the second connecting port, the top of the main valve body is connected with an electromagnetic valve by a bolt, three groups of valve ports which are communicated with each other are evenly arranged at the bottom of the electromagnetic valve, the middle group of the three groups of valve ports is an oil return valve port, two groups of the three groups of valve ports are oil inlet valve ports, three groups of valve port connecting ports which are respectively communicated with the three groups of valve ports are arranged at the top of the main valve body, the middle group of the three groups of valve port connecting ports is an oil return valve port connecting port, and two groups of the three groups of valve port connecting ports are oil inlet valve port connecting, the control oil return port is communicated with the first connecting port, the control oil inlet port is communicated with the second connecting port, the third connecting port is communicated with an oil return valve port connecting port close to one side, the fourth connecting port is communicated with the main oil inlet, and the oil return valve port connecting port is communicated with the first undercut groove and the fifth undercut groove.

Preferably, an electromagnetic valve core capable of rotating around the top is arranged in the electromagnetic valve, a left coil and a right coil are respectively arranged on the left side and the right side of the electromagnetic valve core, and the bottom of the electromagnetic valve core is located at the communication intersection of the three groups of valve ports.

Preferably, the grooves among the three groups of shoulders are arc-shaped.

Preferably, a first sealing ring is arranged at the joint of the main valve body and the connecting sleeve, and a second sealing ring is arranged at the joint of the main valve body and the end cover.

Preferably, the third connector and the fourth connector are provided with first bosses, the first connector and the second connector are provided with first counter bores matched with the first bosses, and the joint of the first bosses and the first counter bores is provided with third sealing rings.

Preferably, the three groups of valve ports are provided with second bosses, the oil inlet valve port connecting port and the oil return valve port connecting port are provided with second counter bores matched with the second bosses, and the connecting part of the second bosses and the second counter bores is provided with fourth sealing rings.

(III) advantageous effects

Compared with the prior art, the utility model provides a hydraulic valve possesses following beneficial effect:

when the electromagnetic valve is not electrified, oil enters the main valve body from the main oil inlet, enters the chutes on the left side and the right side through the fourth connecting port, the second connecting port and the control oil inlet, enters the electromagnetic valve through the control oil return port, the first connecting port, the second connecting port, the oil inlet valve port connecting port and the oil inlet valve port on the left side and the right side, then flows out of the main valve body through the oil return valve port, the oil return valve port connecting port, the first undercut groove and the main oil return port in sequence, because the outer side pressures of the left side and the right side of the plunger are equal and have no pressure difference, the valve core is in the middle position, the main oil inlet, the main oil return port, the first oil port and the second oil port are not communicated with each other, when the electromagnetic valve is electrified to disconnect the oil inlet valve port on the left side from the oil return valve port, the flow direction of the oil on the, the left plunger pushes the valve core to move towards the right side, at the moment, the second undercut groove is communicated with the third undercut groove, the fourth undercut groove is communicated with the fifth undercut groove, oil enters the equipment through the main oil inlet and the first oil port, oil discharged by the equipment flows out through the second oil port and the main oil return port, connection of a first control path is achieved, when the electromagnetic valve is powered on to disconnect an oil inlet valve port and an oil return valve port on the right side, the flow direction of the left oil is unchanged, the right oil flowing into the chute cannot flow out, pressure is generated on the right plunger, the right plunger pushes the valve core to move towards the left side, at the moment, the first undercut groove is communicated with the second undercut groove, the third undercut groove is communicated with the fourth undercut groove, the oil enters the equipment through the main oil inlet and the second oil port, the oil discharged by the equipment flows out through the first oil port and the main oil return port, connection of a second control path is achieved, and the control oil is directly extracted from the valve, and a control oil way does not need to be independently arranged, so that the cost is saved.

Drawings

Fig. 1 is a schematic front view of the present invention;

fig. 2 is a schematic diagram of the right-side structure of the present invention;

fig. 3 is a schematic top view of the present invention;

in the drawings, the reference numbers: 1. a main valve body; 2. a main valve element; 3. a first undercut; 4. a second undercut; 5. a third undercut; 6. a fourth undercut; 7. a fifth undercut groove; 8. a shoulder is formed; 9. connecting sleeves; 10. an end cap; 11. a guide post; 12. a chute; 13. a plunger; 14. a top pillar; 15. a spring; 16. a main oil return port; 17. a first oil port; 18. a main oil inlet; 19. a second oil port; 20. controlling an oil return port; 21. controlling the oil inlet; 22. a first connection port; 23. a second connection port; 24. a third connection port; 25. a fourth connection port; 26. an electromagnetic valve; 27. an oil return valve port; 28. an oil inlet valve port; 29. an oil return valve port connecting port; 30. an oil inlet valve port connecting port; 31. an electromagnetic spool; 32. a left coil; 33. a right coil; 34. a first seal ring; 35. a second seal ring; 36. a third seal ring; 37. and a fourth seal ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a hydraulic valve of the present invention includes a main valve body 1 and a main valve core 2, a cylindrical main valve body hole penetrating left and right is disposed in the main valve body 1, five sets of annular undercut grooves are uniformly disposed in the main valve body hole, the five sets of undercut grooves are a first undercut groove 3, a second undercut groove 4, a third undercut groove 5, a fourth undercut groove 6 and a fifth undercut groove 7 from left to right, three sets of shoulders 8 matched with the main valve body hole are uniformly disposed on the main valve core 2, the main valve core 2 passes through the main valve body 1 in the main valve body hole, the hydraulic valve further includes two sets of connecting sleeves 9 and two sets of end caps 10, the two sets of connecting sleeves 9 are respectively connected with the left and right sides of the main valve body 1 through a stepped structure, a circular hole penetrating left and right is disposed in the middle of the connecting sleeves 9, guide posts 11 matched with the circular hole are disposed at the left and right ends of the main valve core 2, the guide posts, two groups of end covers 10 are respectively connected with the left side and the right side of a main valve body 1 through bolts, a cylindrical chute 12 is arranged in each end cover 10, a plunger 13 is arranged in each chute 12 in a sliding mode, a top column 14 matched with a round hole is arranged on one side, close to the main valve core 2, of each plunger 13, the top column 14 extends into the round hole and is in contact with a guide column 11, a blind groove is arranged on one side, away from the main valve core 2, of each plunger 13, a spring 15 is arranged in each blind groove, two ends of each spring 15 are respectively attached to the side wall of each blind groove and the side wall of each chute 12, a main oil return port 16, a first oil port 17, a main oil inlet port 18 and a second oil port 19 are machined in the bottom of the main valve body 1 from left to right and are respectively communicated with a first cutting groove 3, a second cutting groove 4 and a third cutting groove 5 and a fourth cutting groove 6, the first cutting groove 3 is communicated with the fifth cutting groove 7, a, the upper end and the lower end of the end cover 10 close to the end face of the main valve core 2 are respectively provided with a first connecting port 22 and a second connecting port 23, the left end and the right end of the main valve body 1 are respectively provided with a third connecting port 24 and a fourth connecting port 25 which are respectively communicated with the first connecting port 22 and the second connecting port 23, the top of the main valve body 1 is connected with an electromagnetic valve 26 by bolts, the bottom of the electromagnetic valve 26 is uniformly provided with three groups of mutually communicated valve ports, the middle group of the three groups of valve ports is an oil return valve port 27, two groups at two sides are oil inlet valve ports 28, the top of the main valve body 1 is provided with three groups of valve port connecting ports which are respectively communicated with the three groups of valve ports, the middle group of the three groups of valve port connecting ports is an oil return valve port connecting port 29, two groups at two sides are oil inlet valve port connecting ports 30, the fourth connecting port 25 is communicated with the main oil inlet 18, and the oil return valve port connecting port 29 is communicated with the first undercut 3 and the fifth undercut 7.

The utility model discloses a hydraulic valve, 26 inside being provided with of solenoid valve can be around top pivoted solenoid valve core 31, the solenoid valve core 31 left and right sides is provided with left coil 32 and right coil 33 respectively, solenoid valve core 31 bottom is located the intercommunication intersection of three groups of valve ports, produce the electromagnetic force when left coil 32 circular telegram, solenoid valve core 31 is attracted to the left turn by the electromagnetic force, solenoid valve core 31 bottom is with left side income oil valve port 28 and the disconnection of 27 passageways of oil return valve port, produce the electromagnetic force when right coil 33 circular telegram, solenoid valve core 31 is attracted the right turn by the electromagnetic force, solenoid valve core 31 bottom is with right side income oil valve port 28 and the disconnection of 27 passageways of oil return valve port.

The utility model discloses a hydraulic valve, the recess between three groups of convex shoulders 8 is the arc, produced noise when fluid is to the resistance that main valve element 2 produced and reduce main valve element 2 and remove when can reducing main valve element 2 and remove.

The utility model relates to a hydraulic valve, the junction of the main valve body 1 and the connecting sleeve 9 is provided with a first sealing ring 34, the junction of the main valve body 1 and the end cover 10 is provided with a second sealing ring 35, the junction of the third connecting port 24 and the fourth connecting port 25 is provided with a first boss, the junction of the first connecting port 22 and the second connecting port 23 is provided with a first counter bore matched with the first boss, the junction of the first boss and the first counter bore is provided with a third sealing ring 36, the three groups of valve ports are provided with second bosses, the junction of the oil inlet valve port connecting port 30 and the oil return valve port connecting port 29 is provided with a second counter bore matched with the second boss, the junction of the second boss and the second counter bore is provided with a fourth sealing ring 37, the first sealing ring 34, the second sealing ring 35, the third sealing ring 36 and the fourth sealing ring 37 are all made of nitrile rubber, which has extremely low friction coefficient and good self, the hydraulic valve has the advantages that the service life is long, the dynamic and static sealing effect is good, oil in the hydraulic valve can be prevented from leaking, the matching of the first boss and the first counter bore can play a role in positioning the connection between the end cover 10 and the main valve body 1, the first connecting port 22 and the third connecting port 24, the second connecting port 23 and the fourth connecting port 25 can be ensured to be correctly butted, the matching of the second boss and the second counter bore can play a role in positioning the connection between the electromagnetic valve 26 and the main valve body 1, and the oil inlet valve port 28 and the oil inlet valve port connecting port 30, and the oil return valve port 27 and the oil return valve port connecting port 29 can be ensured to be correctly butted.

The utility model discloses a hydraulic valve, when using, when the solenoid valve 26 is not switched on, fluid gets into main valve body 1 from main oil inlet 18, loop through the fourth connector 25 of left and right sides, second connector 23 and control oil inlet 21 and gets into in the spout 12 of left and right sides, and loop through the control oil return opening 20 of left and right sides, first connector 22, second connector 23, income oil valve mouth connector 30, income oil valve mouth 28 and get into solenoid valve 26, loop through oil return valve mouth 27, oil return valve mouth connector 29, first undercut groove 3 and main oil return opening 16 flow out main valve body 1, because the outside pressure of left and right sides plunger 13 is equal, there is not pressure difference, the case is in the intermediate position, the main oil inlet, main oil return opening 16, first oil port 17 and second oil port 19 all do not communicate with each other, when the solenoid valve 26 circular telegram is connected left income oil 28 and is disconnected with oil return valve mouth 27, the flow direction of the right oil is unchanged, the left oil flowing into the chute 12 cannot flow out, so that pressure is generated on the left plunger 13, the left plunger 13 pushes the valve core to move towards the right, at the moment, the second undercut groove 4 is communicated with the third undercut groove 5, the fourth undercut groove 6 is communicated with the fifth undercut groove 7, the oil enters the equipment through the main oil inlet and the first oil port 17, the oil discharged by the equipment flows out through the second oil port 19 and the main oil return port 16, a first control path is connected, when the electromagnetic valve 26 is electrified to disconnect the oil inlet valve port 28 and the oil return valve port 27 on the right, the flow direction of the left oil is unchanged, the right oil flowing into the chute 12 cannot flow out, so that pressure is generated on the right plunger 13, the right plunger 13 pushes the valve core to move towards the left, at the moment, the first undercut groove 3 is communicated with the second undercut groove 4, the third undercut groove 5 is communicated with the fourth undercut groove 6, and the oil enters the equipment through the main oil inlet and the second oil port 19, the oil discharged by the equipment flows out through the first oil port 17 and the main oil return port 16, the second control access connection is realized, the control oil is directly extracted in the valve, a control oil way does not need to be arranged independently, and the cost is saved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The electrical components presented in this document are electrically connected to an external master controller and an external power supply, and the master controller may be a conventional known device controlled by a computer or the like.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A hydraulic valve comprises a main valve body (1) and a main valve core (2), wherein a cylindrical main valve body hole which is communicated from left to right is formed in the main valve body (1), five groups of annular undercut grooves are uniformly formed in the main valve body hole, the five groups of undercut grooves are a first undercut groove (3), a second undercut groove (4), a third undercut groove (5), a fourth undercut groove (6) and a fifth undercut groove (7) from left to right, three groups of convex shoulders (8) matched with the main valve body hole are uniformly arranged on the main valve core (2), the main valve core (2) penetrates through the main valve body (1) in the main valve body hole, the hydraulic valve is characterized by further comprising two groups of connecting sleeves (9) and two groups of end covers (10), the two groups of connecting sleeves (9) are respectively connected with the left side and the right side of the main valve body (1) through a stepped structure, a round hole which is communicated from left to right is formed in the middle of the connecting sleeve (9), and guide columns (11) matched with the round hole are arranged at the left end and, the guide post (11) stretches into the round hole, two groups of end covers (10) are respectively in bolted connection with the left side and the right side of the main valve body (1), a cylindrical sliding groove (12) is arranged inside the end cover (10), a plunger (13) is arranged in the sliding groove (12) in a sliding mode, one side, close to the main valve core (2), of the plunger (13) is provided with a top post (14) matched with the round hole, the top post (14) stretches into the round hole and is in contact with the guide post (11), a blind groove is formed in one side, far away from the main valve core (2), of the plunger (13), a spring (15) is arranged in the blind groove, two ends of the spring (15) are respectively attached to the side wall of the blind groove and the side wall of the sliding groove (12), a main oil return port (16), a first oil port (17), a main oil inlet (18) and a second oil port (19) are machined from left to right at the bottom of the main, A second undercut (4) and a third undercut (5) are communicated with a fourth undercut (6), the first undercut (3) is communicated with a fifth undercut (7), the top and the bottom of one side of the chute (12) far away from the main valve core (2) are respectively provided with a control oil return port (20) and a control oil inlet (21), the upper end and the lower end of the end cover (10) close to one side end face of the main valve core (2) are respectively provided with a first connecting port (22) and a second connecting port (23), the left end and the right end of the main valve body (1) are respectively provided with a third connecting port (24) and a fourth connecting port (25) which are respectively communicated with the first connecting port (22) and the second connecting port (23), the top of the main valve body (1) is in bolted connection with a connecting port (26), the bottom of the electromagnetic valve (26) is uniformly provided with three groups of mutually communicated valve ports, the middle group of the three groups of valve ports is an oil return valve port (27), and the two groups of the, the top of the main valve body (1) is provided with three groups of valve port connecting ports which are respectively communicated with the three groups of valve ports, the middle group of the three groups of valve port connecting ports is an oil return valve port connecting port (29), the two groups of the two sides of the three groups of valve port connecting ports are oil inlet valve port connecting ports (30), the control oil return port (20) is communicated with the first connecting port (22), the control oil inlet port (21) is communicated with the second connecting port (23), the third connecting port (24) is communicated with the oil return valve port connecting port (29) close to one side, the fourth connecting port (25) is communicated with the main oil inlet port (18), and the oil return valve port connecting port (29) is communicated with the first undercut groove (3) and the fifth undercut groove (7).

2. The hydraulic valve according to claim 1, wherein the solenoid valve (26) is internally provided with a solenoid spool (31) capable of rotating around the top, the left side and the right side of the solenoid spool (31) are respectively provided with a left coil (32) and a right coil (33), and the bottom of the solenoid spool (31) is positioned at the communication junction of the three valve ports.

3. A hydraulic valve as claimed in claim 2, characterised in that the grooves between said three sets of shoulders (8) are arc-shaped.

4. A hydraulic valve as claimed in claim 3, characterised in that a first sealing ring (34) is provided at the junction of the main valve body (1) and the connecting sleeve (9), and a second sealing ring (35) is provided at the junction of the main valve body (1) and the end cap (10).

5. The hydraulic valve as recited in claim 4 wherein a first boss is disposed at each of the third connection port (24) and the fourth connection port (25), a first counter bore is disposed at each of the first connection port (22) and the second connection port (23) and is matched with the first boss, and a third sealing ring (36) is disposed at the connection position of the first boss and the first counter bore.

6. The hydraulic valve as recited in claim 5 wherein a second boss is disposed at each of the three sets of valve ports, a second counter bore is disposed at each of the oil inlet valve port connecting port (30) and the oil return valve port connecting port (29) and is matched with the second boss, and a fourth sealing ring (37) is disposed at the joint of the second boss and the second counter bore.