CN217558675U

CN217558675U - Partial pressure proportional valve

Info

Publication number: CN217558675U
Application number: CN202221830771.XU
Authority: CN
Inventors: 杨建刚
Original assignee: Xuzhou Longchi Electronic Technology Co ltd
Current assignee: Xuzhou Longchi Electronic Technology Co ltd
Priority date: 2022-07-15
Filing date: 2022-07-15
Publication date: 2022-10-11
Anticipated expiration: 2032-07-15

Abstract

The utility model relates to an adjust bleeder valve technical field, disclose a partial pressure proportional valve, including the main valve, first main valve has the bolt, there is the oil inlet on the main valve, there is the liquid outlet before the oil inlet, first main valve has the assistance valve, there is the backward flow mouth on the assistance valve, there is the bleeder port before the assistance valve, there is the spout oil inlet one side, there is first O shape sealing washer outside the spout, there is second O shape sealing washer in the assistance valve, there is the balancing hole on the spout, there is the compensation hole under the backward flow mouth, there is the piston in the spout, there is the retaining ring the piston outside, there is lip seal circle retaining ring one side. The utility model discloses in, when the oil inlet got into pressure oil, flow through the liquid outlet, pressure effect was on the right side of piston simultaneously, promoted the piston and moved to a left side, and the piston moves to a left side, drives lip seal and crosses compensation pore pair pressure tap and produce pressure to through the pressure between balanced hole balance lip seal and the second O shape sealing washer.

Description

Partial pressure proportional valve

Technical Field

The utility model relates to an adjust the bleeder valve technical field, especially relate to a partial pressure proportional valve.

Background

The pressure-dividing valve is also called as a pressure-releasing valve, in the assembly process of parts in the conventional pressure-releasing valve, the positioning shaft and the top cover are bonded by glue fixation, so that the top cover and the positioning shaft are connected into a whole to form tight fit, and because the positioning shaft and the top cover are bonded by glue fixation, the positioning shaft can only be temporarily or temporarily matched, the positioning shaft is easy to longitudinally fall off for a long time, a valve core is directly pressed, gas cannot be normally discharged under a high-pressure state, and the automatic discharge function of the gas under the high-pressure state cannot be normally realized; in addition, the glue fixation and bonding can be realized only by adopting a third-party medium, and the realization cost of the pressure relief function is increased.

Through retrieval, chinese patent discloses a relief valve (publication No. CN 205207810U), including a valve core, a positioning pin, a positioning shaft, a top cover and a valve cover, the top cover is on the top of the valve cover and is in threaded connection with the valve cover, the valve core is located in the valve cover and compresses a relief port inside the sealing valve cover, the valve core is in threaded fixed connection with the bottom of the positioning pin, the top of the positioning pin is inserted into the inner cavity of the positioning shaft from the bottom of the positioning shaft, and the top of the positioning pin can slide up and down in the inner cavity of the positioning shaft, the bottom outer side wall of the positioning shaft is in threaded fixed connection with the top cover, and the top of the positioning shaft extends out of the top cover.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the partial pressure proportional valve who proposes, when the oil inlet entering pressure oil, flow through the liquid outlet, pressure is used in the right side of piston simultaneously, promote the piston and move to the left, the piston moves to the left, it crosses compensation pore pair partial pressure mouth and produces pressure to drive lip seal, and through the pressure between balanced hole balance lip seal and the second O shape sealing washer, the regulation degree of freedom of the left pressure size of lip seal is decided by the diameter of lip seal and the left diameter cooperation of piston.

In order to achieve the above purpose, the utility model provides a following technical scheme: a partial pressure proportional valve comprises a main valve, wherein bolts are arranged at two opposite angles, which are not adjacent to one side wall of the main valve, an oil inlet is formed in the center of the upper end face of the main valve, the lower end of the oil inlet is communicated with the lower part of the interior of the main valve, a liquid outlet is formed in the lower part of the center of the front side wall of the oil inlet, and the front end of the liquid outlet penetrates through the front inner wall of the main valve;

the auxiliary valve is arranged on one side of the main valve, a backflow port is formed in the center of the upper end face of the auxiliary valve, a pressure dividing port is formed in the diagonal position, close to the upper side of the main valve, of the front side wall of the auxiliary valve, a sliding groove is formed in the position, close to the lower side of the center of one side wall of the auxiliary valve, of the oil inlet, the other end of the sliding groove penetrates through the main valve and the auxiliary valve in sequence, the end portion of the sliding groove penetrates into the auxiliary valve, a first O-shaped sealing ring is sleeved on the outer side wall of the sliding groove in the main valve, a second O-shaped sealing ring is sleeved in the auxiliary valve, a balance hole is formed in the upper end face of the sliding groove at the lower end face of the second O-shaped sealing ring, a compensation hole is formed in the center of the lower end face of the backflow port, the lower end of the compensation hole is communicated with the sliding groove in a connecting mode, a piston is sleeved in the sliding groove, a retaining ring is fixedly arranged on the outer side wall of the piston in the auxiliary valve, a retaining ring is arranged on the side wall of the retaining ring far away from the main valve in a sleeve, a lip-shaped sealing ring is arranged on the end portion of the piston, and a spring is connected to one side wall of the sliding groove;

through above-mentioned technical scheme, when the oil inlet got into pressure oil, flow through the liquid outlet, pressure effect is on the right side of piston simultaneously, promotes the piston and moves to the left, and the piston moves to the left, drives lip seal and crosses compensation hole pair pressure tap and produce pressure to through the pressure between balanced hole balance lip seal and the second O shape sealing washer, the degree of freedom of regulation of the left pressure size of lip seal is decided by the diameter of lip seal and the left diameter cooperation of piston.

Furthermore, the lower end surface of the pressure dividing port is communicated with the sliding groove at the position close to the rear;

through the technical scheme, the pressure of the oil way is shared.

Furthermore, one end of each bolt penetrates through the main valve, and the end parts of the bolts are in threaded connection with one side wall of the auxiliary valve;

through the technical scheme, the main valve and the auxiliary valve are fixed.

Furthermore, the upper end of the balance hole is communicated with the reflux port;

through the technical scheme, the oil is returned to the oil can to maintain the pressure balance of the hydraulic system.

Further, the lip-shaped sealing ring is sleeved on the outer side of the piston;

through above-mentioned technical scheme, conveniently adjust oil return volume.

Furthermore, one end of the piston, which is far away from the main valve, is in a stepped circular shaft shape;

through above-mentioned technical scheme, the spring easy to assemble.

Furthermore, the inner side walls of the oil inlet, the reflux port, the liquid outlet and the pressure dividing port are provided with threads;

through above-mentioned technical scheme, conveniently connect the oil circuit.

Further, the diameter and the chute of the retainer ring and the lip-shaped sealing ring are the same;

through the technical scheme, oil return is conveniently controlled.

The utility model discloses following beneficial effect has:

1. the utility model discloses in, when oil inlet entering pressure oil, flow through the liquid outlet, pressure effect is on the right side of piston simultaneously, promotes the piston and moves on a left side, and the piston moves on a left side, drives the lip seal and crosses compensation pore pair pressure tap generate pressure to through the pressure between balanced hole balance lip seal and the second O type sealing washer.

2. The utility model discloses in, the regulation degree of freedom of the left pressure size of lip seal is decided by the diameter of lip seal and the left diameter cooperation of piston.

Drawings

Fig. 1 is a perspective view of a partial pressure proportional valve according to the present invention;

fig. 2 is a front view of a partial pressure proportional valve according to the present invention;

fig. 3 is a front sectional view of a partial pressure proportional valve according to the present invention;

fig. 4 is a top view of a partial pressure proportional valve according to the present invention.

Illustration of the drawings:

1. a main valve; 2. an oil inlet; 3. a return port; 4. an auxiliary valve; 5. a pressure dividing port; 6. a liquid outlet; 7. a bolt; 8. a spring; 9. a chute; 10. a lip-shaped seal ring; 11. a piston; 12. a first O-ring seal; 13. a second O-ring seal; 14. a balance hole; 15. a compensation hole; 16. and a retainer ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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. 1-4, the present invention provides an embodiment: the utility model provides a partial pressure proportional valve, includes main valve 1, and 1 a side wall nonadjacent two diagonal departments of main valve all are equipped with

bolt

7, and 1 up end center department of main valve has seted up

oil inlet

2, and 2 lower extremes of oil inlet lead to and lean on lower department to 1 inside of main valve, and 2 preceding lateral wall centers of oil inlet lean on lower department and have seted up liquid outlet 6, and the preceding inner wall of main valve 1 is run through to 6 front ends of liquid outlet.

An auxiliary valve 4 is arranged at one side of a main valve 1, a return port 3 is arranged at the center of the upper end face of the auxiliary valve 4, a pressure dividing port 5 is arranged at the upper diagonal position of the front side wall of the auxiliary valve 4, which is far away from one side of the main valve 1, a chute 9 is arranged at the lower position of an oil inlet 2, which is close to the center of one side wall of the auxiliary valve 4, the other end of the chute 9 sequentially penetrates through the main valve 1 and the auxiliary valve 4, the end part of the chute 9 is communicated with the inside of the auxiliary valve 4, a first O-shaped sealing ring 12 is sleeved at the outer side wall of the chute 9 inside the main valve 1, a second O-shaped sealing ring 13 is sleeved inside the auxiliary valve 4, a balance hole 14 is arranged at the upper end face of the chute 9 at the lower end face of the second O-shaped sealing ring 13, a compensation hole 15 is arranged at the center of the lower end face of the return port 3, the lower end of the compensation hole 15 is communicated with the chute 9, and a piston 11 is sleeved inside the chute 9, the outer side wall of a piston 11 in an auxiliary valve 4 is fixedly provided with a retainer ring 16 in a sleeved mode, one side, far away from the retainer ring 16 of a main valve 1, of the retainer ring is provided with a lip-shaped sealing ring 10, the end portion of the piston 11 is provided with a spring 8, the other end of the spring 8 is connected to one side wall of a sliding chute 9, when pressure oil enters an oil inlet 2, the pressure oil flows out through a liquid outlet 6, meanwhile, pressure acts on the right side of the piston 11, the piston 11 is pushed to move to the left, the piston 11 moves to the left, the lip-shaped sealing ring 10 is driven to cross a compensation hole 15 to generate pressure on a pressure division port 5, the pressure between the lip-shaped sealing ring 10 and a second O-shaped sealing ring 13 is balanced through a balance hole 14, and the degree of freedom of adjustment of the pressure on the left side of the lip-shaped sealing ring 10 is determined by the matching of the diameter of the lip-shaped sealing ring 10 and the diameter on the left side of the piston 11.

The lower end face of the pressure dividing port 5 is connected and communicated with the sliding groove 9 close to the rear part, oil circuit pressure is shared, one ends of two bolts 7 penetrate through the main valve 1, the end parts of the two bolts are connected to one side wall of the auxiliary valve 4 through threads, the main valve 1 and the auxiliary valve 4 are fixed, the upper end of the balance hole 14 is connected and communicated with the return port 3, oil is returned to the oil pot, pressure balance of a hydraulic system is maintained, the lip-shaped sealing ring 10 is sleeved on the outer side of the piston 11, oil return amount is convenient to adjust, the end, far away from the main valve 1, of the piston 11 is in a stepped circular shaft shape, a spring 8 is convenient to install, threads are formed in the inner side walls of the oil inlet 2, the return port 3, the liquid outlet 6 and the pressure dividing port 5, oil circuits are convenient to connect, the check ring 16 is the same as the diameter of the lip-shaped sealing ring 10 and the sliding groove 9, and oil return is convenient to control.

The working principle is as follows: when pressure oil enters the oil inlet 2, the pressure oil flows out through the liquid outlet 6, meanwhile, pressure acts on the right side of the piston 11, the piston 11 is pushed to move left, the piston 11 moves left, the lip-shaped sealing ring 10 is driven to cross the compensation hole 15 to generate pressure for the pressure division port 5, the pressure between the lip-shaped sealing ring 10 and the second O-shaped sealing ring 13 is balanced through the balance hole 14, and the degree of freedom of adjustment of the pressure on the left side of the lip-shaped sealing ring 10 is determined by the matching of the diameter of the lip-shaped sealing ring 10 and the diameter on the left side of the piston 11.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions on some technical features, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. A partial pressure proportional valve comprising a main valve (1), characterized in that: bolts (7) are arranged at two opposite angles, which are not adjacent to each other, of one side wall of the main valve (1), an oil inlet (2) is formed in the center of the upper end face of the main valve (1), the lower end of the oil inlet (2) is communicated with the lower portion, close to the inside of the main valve (1), of the lower end of the oil inlet, a liquid outlet (6) is formed in the lower portion, close to the center, of the front side wall of the oil inlet (2), and the front end of the liquid outlet (6) penetrates through the front inner wall of the main valve (1);

the auxiliary valve (4) is arranged on one side of the main valve (1), the center of the upper end face of the auxiliary valve (4) is provided with a return port (3), the front side wall of the auxiliary valve (4) is far away from the opposite angle position on one side of the main valve (1) and is provided with a pressure dividing port (5), the center of one side wall of the oil inlet (2) close to the auxiliary valve (4) is provided with a chute (9) by the lower position, the other end of the chute (9) sequentially penetrates through the main valve (1) and the auxiliary valve (4), the end part of the oil inlet is communicated with the upper end face of the auxiliary valve (4), the outer side wall of the inner chute (9) of the main valve (1) is provided with a first O-shaped sealing ring (12), the inner sleeve of the auxiliary valve (4) is provided with a second O-shaped sealing ring (13), the upper end face of the lower end chute (9) of the second O-shaped sealing ring (13) is provided with a balance hole (14), the center of the lower end face of the return port (3) is provided with a compensation hole (15), the lower end face of the compensation hole (15) is connected with the chute (9), the inner sleeve of the auxiliary valve (4) is provided with a piston (11), one side wall of the main valve (10) is provided with a retaining ring (10), and one side of the main valve (10) is provided with a lip-shaped sealing ring (8), the other end of the spring (8) is connected to one side wall of the sliding groove (9).

2. A partial pressure proportioning valve according to claim 1 wherein: the lower end surface of the pressure division port (5) is communicated with the sliding groove (9) at the position close to the rear.

3. A partial pressure proportioning valve according to claim 1 wherein: two bolt (7) one end all runs through main valve (1), and the equal threaded connection of tip is on the lateral wall of assisting valve (4).

4. A partial pressure proportioning valve according to claim 1 wherein: the upper end of the balance hole (14) is communicated with the reflux port (3).

5. A partial pressure proportioning valve according to claim 1 wherein: the lip-shaped sealing ring (10) is sleeved on the outer side of the piston (11).

6. A partial pressure proportioning valve according to claim 1 wherein: the end of the piston (11) far away from the main valve (1) is in a stepped circular shaft shape.

7. A partial pressure proportioning valve according to claim 1 wherein: the inner side walls of the oil inlet (2), the backflow port (3), the liquid outlet (6) and the partial pressure port (5) are all provided with threads.

8. A partial pressure proportioning valve according to claim 1 wherein: the diameter of the retainer ring (16) is the same as that of the lip-shaped sealing ring (10) and the diameter of the sliding groove (9).