CN214534655U

CN214534655U - Pressure feedback logic reversing valve

Info

Publication number: CN214534655U
Application number: CN202120814986.1U
Authority: CN
Inventors: 董福安
Original assignee: Ningbo Fuyite Hydraulic Technology Co ltd
Current assignee: Ningbo Fuyite Hydraulic Technology Co ltd
Priority date: 2021-04-20
Filing date: 2021-04-20
Publication date: 2021-10-29
Anticipated expiration: 2031-04-20

Abstract

The utility model relates to a switching-over valve technical field just discloses a pressure feedback logic switching-over valve, which comprises a valve body, the one end of valve body is equipped with the inlet, just the inside of valve body is equipped with the fixed chamber of first fixed chamber and second, first fixed chamber with the fixed intracavity of second all is equipped with piston assembly, the upper end of valve body is equipped with first liquid outlet and second liquid outlet, one side of first fixed chamber is equipped with first fixed slot, one side of the fixed chamber of second is equipped with the second fixed slot, just the second fixed slot with all be equipped with the subassembly that dams in the first fixed slot. This technical scheme is through setting up two fixed chambeies in the valve body, and fixed intracavity all is equipped with piston assembly, and piston assembly can be adjusted, when needs set up high pressure runner and low pressure runner, can select wantonly between the fixed chamber of first fixed chamber and second, when the selection is accomplished the back, when using, also can switch convenient to use wantonly.

Description

Pressure feedback logic reversing valve

Technical Field

The utility model relates to a switching-over valve technical field specifically is a pressure feedback logic switching-over valve.

Background

The pressure feedback logic reversing valve can automatically reverse according to different pressures in popular terms, and the principle is as follows: be equipped with a mobilizable flashboard in the switching-over valve, the flashboard passes through elastic connection spare and switching-over valve elastic connection, and under the normal condition, the flashboard can be stopped up the high pressure runner, and when the flow grow, the flashboard can be promoted to stop up the low pressure runner, and put through the high pressure runner, the fluid will be followed the high pressure runner and flowed this moment. After the existing pressure reversing valve is processed, the low-pressure flow passage and the high-pressure flow passage are fixed and cannot be adjusted, so that inconvenience is brought to use.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pressure feedback logic switching-over valve possesses the convenient beneficial effect of regulation, has solved the current pressure switching-over valve that mentions in the above-mentioned background art and has accomplished the back in processing, and low pressure runner and high pressure runner have just been fixed, the unable problem of adjusting.

The utility model provides a following technical scheme: the utility model provides a pressure feedback logic switching-over valve, the one end of valve body is equipped with the inlet, just the inside of valve body is equipped with the fixed chamber of first fixed chamber and second, first fixed chamber with the fixed intracavity of second all is equipped with piston assembly, the upper end of valve body is equipped with first liquid outlet and second liquid outlet, one side in first fixed chamber is equipped with first fixed slot, one side in the fixed chamber of second is equipped with the second fixed slot, just the second fixed slot with all be equipped with the subassembly that dams in the first fixed slot, the subassembly that dams includes the movable block, just the movable block pass through the spring with valve body elastic connection, the upper end of movable block is equipped with the flashboard, just the lower extreme of movable block is equipped with the lug.

As the utility model discloses an alternative of pressure feedback logic switching-over valve, wherein: piston assembly includes first piston, the fixed jar of hydraulic oil and second piston, first piston is located in the fixed jar of hydraulic oil, just be equipped with the fixed plate on the piston rod of first piston, the second piston pass through the spout with valve body sliding connection, just the second piston pass through spacing spring with fixed plate elastic connection.

As the utility model discloses an alternative of pressure feedback logic switching-over valve, wherein: the tail of the hydraulic oil fixing tank is provided with a pressure gauge, and one side of the hydraulic oil fixing tank is provided with a connecting port.

As the utility model discloses an alternative of pressure feedback logic switching-over valve, wherein: the first liquid outlet is communicated with the first fixed cavity through a first flow channel, and the second liquid outlet is communicated with the second fixed cavity through a second flow channel.

As the utility model discloses an alternative of pressure feedback logic switching-over valve, wherein: the lug is cylindric, just the lug is kept away from the one end of movable block is equipped with the toper arch.

As the utility model discloses an alternative of pressure feedback logic switching-over valve, wherein: the hydraulic oil fixing tank is cylindrical, one end of the hydraulic oil fixing tank is inserted into the valve body, and the hydraulic oil fixing tank is detachably connected with the valve body through screws.

The utility model discloses possess following beneficial effect:

1. this pressure feedback logic switching-over valve through set up two fixed chambeies in the valve body, fixed intracavity all is equipped with piston assembly, and piston assembly is adjustable, when needs set up high pressure runner and low pressure runner, can select wantonly between the fixed chamber of first fixed chamber and second, when the selection is accomplished the back, when using, also can switch wantonly, convenient to use.

2. This pressure feedback logic switching-over valve, through setting up a piston assembly who has the fixed jar of hydraulic oil, when the resistance size that needs adjust piston assembly, only need to pour into hydraulic oil into in the fixed jar of hydraulic oil, can promote first piston and fixed plate to the motion of second piston direction through hydraulic oil, along with the interval between fixed plate and the second piston diminishes, the spring can be compressed gradually, the fluid just can push the second piston open with bigger pressure, adjust the second piston through hydraulic oil, it is convenient and the high advantage of regulation precision to have the regulation.

3. This pressure feedback logic switching-over valve through setting up a detachable hydraulic oil fixed tank, on the one hand, through the position of adjusting the hydraulic oil fixed tank, also can reach the purpose of the interval between regulation fixed plate and the second piston, and on the other hand, hydraulic oil fixed tank dismantles simply easy to maintain.

Drawings

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

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is a schematic structural view of the closure assembly of the present invention.

In the figure: 1. a valve body; 2. a liquid inlet; 3. a first fixed cavity; 4. a second fixed cavity; 5. a first liquid outlet; 6. a second liquid outlet; 7. a first fixing groove; 8. a second fixing groove; 9. a movable block; 901. a shutter plate; 902. a bump; 10. a spring; 11. a first piston; 12. a hydraulic oil fixing tank; 13. a second piston; 14. a fixing plate; 15. a limiting spring; 16. a pressure gauge; 17. a connecting port; 18. a first flow passage; 19. a second flow passage.

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.

Examples

Referring to fig. 1-3, a pressure feedback logic directional valve includes a valve body 1, a liquid inlet 2 is disposed at one end of the valve body 1, a first fixed chamber 3 and a second fixed chamber 4 are disposed inside the valve body 1, piston assemblies are disposed in the first fixed chamber 3 and the second fixed chamber 4, a first liquid outlet 5 and a second liquid outlet 6 are disposed at the upper end of the valve body 1, a first fixing groove 7 is disposed at one side of the first fixed chamber 3, a second fixing groove 8 is disposed at one side of the second fixed chamber 4, a cut-off assembly is disposed in the second fixing groove 8 and the first fixing groove 7, the cut-off assembly includes a movable block 9, the movable block 9 is elastically connected to the valve body 1 through a spring 10, a gate 901 is disposed at the upper end of the movable block 9, and a protrusion 902 is disposed at the lower end of the movable block 9.

Piston assembly includes first piston 11, the fixed jar of hydraulic oil 12 and second piston 13, and first piston 11 is located the fixed jar of hydraulic oil 12, and is equipped with fixed plate 14 on the piston rod of first piston 11, and second piston 13 passes through spout and 1 sliding connection of valve body, and second piston 13 passes through spacing spring 15 and fixed plate 14 elastic connection.

In the technical scheme, two fixed cavities are arranged in the valve body 1, piston assemblies are arranged in the fixed cavities, one ends of the fixed cavities are communicated with the liquid inlet, and here, taking the first fixed cavity 3 as an example, under normal conditions, the spring 10 can provide a thrust force for the second piston 13, so that the second piston 13 can seal a channel between the first fixed cavity 3 and the liquid inlet 2, and thus, liquid at the liquid inlet 2 cannot enter the first fixed cavity 3, when the pressure of the fluid is higher, the fluid can overcome the thrust force provided by the spring 10, so that the second piston 13 is pushed open, and then the fluid can enter the first flow channel 18 through the first fixed cavity 3, then enter the first liquid outlet 5 through the first flow channel 18, and then is discharged from the first liquid outlet 5;

piston assembly can be adjusted, when the resistance that needs piston assembly is big, only need to pour into hydraulic oil into in the fixed jar 12 of hydraulic oil, can promote first piston 11 and fixed plate 14 through hydraulic oil and move to second piston 13 direction, along with the interval between fixed plate 14 and the second piston 13 diminishes, spring 10 can be compressed gradually, the fluid just needs bigger pressure to push second piston 13 open, be equipped with the same piston assembly in first fixed chamber 3 and the fixed chamber 4 of second, when needs set up high pressure runner and low pressure runner, can select wantonly between first fixed chamber 3 and the fixed chamber 4 of second, when the selection is accomplished, when using, also can switch wantonly, high durability and convenient use.

Further, the tail of the hydraulic oil fixing tank 12 is provided with a pressure gauge 16, one side of the hydraulic oil fixing tank 12 is provided with a connecting port 17, hydraulic oil is injected into the hydraulic oil fixing tank 12 through the connecting port 17, and the internal pressure of the hydraulic oil fixing tank 12 can be conveniently known through the pressure gauge 16.

Further, the first liquid outlet 5 is communicated with the first fixed cavity 3 through a first flow passage 18, and the second liquid outlet 6 is communicated with the second fixed cavity 4 through a second flow passage 19, so that in use, fluid can flow to the first liquid outlet 5 through the first flow passage 18 and the first fixed cavity 3, or flow to the second liquid outlet 6 through the second fixed cavity 4 and the second flow passage 19.

Further, the protrusion 902 is cylindrical, and one end of the protrusion 902 away from the movable block 9 is provided with a conical protrusion, when the second piston 13 moves, the protrusion 902 is pushed inward, and the protrusion 902 drives the movable block 9 and the shutter 901 to move, and the flow channel can be sealed by the shutter 901, specifically, when the second piston 13 in the first fixed cavity 3 moves, the movable block 9 in the first fixed cavity 7 is pushed to move, the second flow channel 19 can be sealed by the movable block 9 and the shutter 901 in the first fixed cavity 7, when the second piston 13 in the second fixed cavity 4 moves, the movable block 9 in the second fixed cavity 8 is pushed to move, and the first flow channel 18 can be sealed by the movable block 9 and the shutter 901 in the second fixed cavity 8.

Further, the fixed jar of hydraulic oil 12 is cylindricly, and the one end of the fixed jar of hydraulic oil 12 is pegged graft in valve body 1, and the fixed jar of hydraulic oil 12 passes through the screw and can dismantle with valve body 1 and be connected, and the fixed jar of hydraulic oil 12 is detachable construction, and on the one hand, through the position of adjusting the fixed jar of hydraulic oil 12, also can reach the purpose of adjusting the interval between fixed plate 14 and the second piston 13, and on the other hand, the fixed jar of hydraulic oil 12 is dismantled simply, easy to maintain.

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 foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A pressure feedback logic directional control valve, includes valve body (1), its characterized in that: a liquid inlet (2) is arranged at one end of the valve body (1), a first fixed cavity (3) and a second fixed cavity (4) are arranged inside the valve body (1), piston components are arranged in the first fixed cavity (3) and the second fixed cavity (4), the upper end of the valve body (1) is provided with a first liquid outlet (5) and a second liquid outlet (6), a first fixing groove (7) is arranged at one side of the first fixing cavity (3), a second fixing groove (8) is arranged at one side of the second fixing cavity (4), and the second fixed groove (8) and the first fixed groove (7) are both provided with a cut-off component which comprises a movable block (9), and the movable block (9) is elastically connected with the valve body (1) through a spring (10), the upper end of the movable block (9) is provided with a flashboard (901), and the lower end of the movable block (9) is provided with a convex block (902).

2. A pressure feedback logic directional control valve according to claim 1, wherein: piston assembly includes first piston (11), the fixed jar of hydraulic oil (12) and second piston (13), first piston (11) are located in the fixed jar of hydraulic oil (12), just be equipped with fixed plate (14) on the piston rod of first piston (11), second piston (13) through the spout with valve body (1) sliding connection, just second piston (13) through spacing spring (15) with fixed plate (14) elastic connection.

3. A pressure feedback logic directional control valve according to claim 2, wherein: the tail of the hydraulic oil fixing tank (12) is provided with a pressure gauge (16), and one side of the hydraulic oil fixing tank (12) is provided with a connecting port (17).

4. A pressure feedback logic directional control valve according to claim 1, wherein: the first liquid outlet (5) is communicated with the first fixed cavity (3) through a first flow channel (18), and the second liquid outlet (6) is communicated with the second fixed cavity (4) through a second flow channel (19).

5. A pressure feedback logic directional control valve according to claim 1, wherein: the lug (902) is cylindrical, and one end, away from the movable block (9), of the lug (902) is provided with a conical bulge.

6. A pressure feedback logic directional control valve according to claim 2, wherein: the hydraulic oil fixing tank (12) is cylindrical, one end of the hydraulic oil fixing tank (12) is inserted into the valve body (1), and the hydraulic oil fixing tank (12) is detachably connected with the valve body (1) through screws.