Integrated partial pressure control valve assembly

Abstract

The integrated partial pressure control valve assembly comprises a lining, a first-stage valve and a second-stage valve, the first-stage valve and the second-stage valve are both of a shaft sleeve structure, and a first-stage oil way hole and a second-stage oil way hole are formed in the positions, close to a front end opening, of the side wall of the lining; the first-stage valve is sleeved in a front port of the bushing, and a first oil hole is formed in the side wall of the first-stage valve; the second-stage valve is sleeved in the front port of the first-stage valve; and a second oil hole is formed in the side wall of the second-stage valve. According to the integrated partial pressure control valve assembly, the pressure characteristic can be adaptively changed along with products according to valve spring parameter design, the adjusting range can be designed according to requirements, and the multi-stage partial pressure function can be achieved at the same time.

Description

Technical Field

[0001] The invention belongs to the technical field of partial pressure control, and in particular relates to an integrated partial pressure control valve assembly. Background Art

[0002] In existing mechanical hydraulic products, valve control is generally achieved by matching the valve with the corresponding spring structure. When pressure control is required in the system, two or more valve assemblies need to be designed, which greatly increases the complexity of the product. At the same time, increasing the number of valve assemblies will also increase the difficulty of product processing and the time for assembly and debugging, which is contrary to the current lightweight and integrated design concept. Summary of the invention

[0003] In view of this, the present invention aims to propose an integrated partial pressure control valve assembly, which can realize graded opening according to different incoming oil pressures, thereby realizing a multi-level control function of the oil pressure.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] An integrated partial pressure control valve assembly comprises a bushing, a primary valve and a secondary valve, wherein the primary valve and the secondary valve are both shaft sleeve structures, and the front ports of the bushing, the primary valve and the secondary valve are all open and the rear ports are all closed;

[0006] The side wall of the bushing is provided with a primary oil passage hole at a position near the front port, and a secondary oil passage hole is provided at a position behind the primary oil passage hole;

[0007] A primary valve is movably mounted in the front end of the bushing, a primary valve spring is arranged between the rear end of the primary valve and the closed end of the bushing, a first oil hole is arranged on the side wall of the primary valve between the primary oil hole and the secondary oil hole, and the first oil hole and the secondary oil hole are arranged correspondingly in the circumferential direction;

[0008] The secondary valve is movably mounted in the front port of the primary valve, a secondary valve spring is arranged between the rear end of the secondary valve and the closed end of the primary valve, a second oil hole is arranged on the side wall of the secondary valve, the second oil hole is located in front of the first oil hole, and the position of the second oil hole in the circumferential direction corresponds to the first oil hole.

[0009] Furthermore, the primary oil path hole, the secondary oil path hole, the first oil hole and the second oil hole are evenly arranged in multiple in the circumferential direction.

[0010] Furthermore, a first annular groove is formed on the inner side surface of the bushing at the position of the secondary oil passage hole; and a second annular groove is formed on the outer side surface of the secondary valve at the position of the second oil hole.

[0011] Furthermore, a first through hole is provided at the rear end of the side wall of the bushing, and a second through hole is provided on the sealing plate of the primary valve.

[0012] Furthermore, a sealing groove is arranged in a circumferential direction on the outer surface of the side wall of the bushing, and a sealing ring is arranged in the sealing groove.

[0013] Compared with the prior art, the integrated partial pressure control valve assembly described in the present invention has the following advantages:

[0014] The integrated pressure-dividing control valve assembly described in the present invention has a pressure characteristic that can be adaptively changed along with the product according to the valve spring parameter design, and the adjustment range can be designed according to demand, and can simultaneously realize multi-stage pressure-dividing function, and has the advantages of large adjustment range and high integration, which is beneficial to the lightweight and integrated design of accessories for aviation, aerospace, shipbuilding and other equipment, and can save product processing and manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 A schematic diagram of an integrated partial pressure control valve assembly according to an embodiment of the present invention;

[0017] Figure 2 This is a diagram showing the opening state of the first-stage valve of the present invention;

[0018] Figure 3 This is a diagram of the open state of the first and second stage valves of the present invention.

[0019] Description of reference numerals:

[0020] 1-bushing; 11-primary oil circuit hole; 12-secondary oil circuit hole; 121-first ring groove; 13-first through hole; 2-sealing ring; 3-secondary valve spring; 4-secondary valve; 41-second oil hole; 411-second ring groove; 5-primary valve; 51-first oil hole; 52-second through hole; 6-primary valve spring. DETAILED DESCRIPTION

[0021] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0022] like Figure 1As shown, an integrated partial pressure control valve assembly includes a secondary valve 4, a primary valve 5 and a bushing 1 that are movably mounted from the inside to the outside. A plurality of sealing grooves are arranged on the outer surface of the side wall of the bushing 1, and a sealing ring 2 is arranged in each sealing groove. The secondary valve 4 and the primary valve 5 are both shaft sleeve structures, and the front ports of the secondary valve 4, the primary valve 5 and the bushing 1 are all open, and the rear ports are each closed by a sealing plate. The primary valve 5 is movably mounted in the position of the front port of the bushing 1, the primary valve 5 and the bushing 1 are gap-fitted, and the axial primary valve 5 can move relative to the bushing 1. The secondary valve 4 is mounted at the front port position of the primary valve 5, and the gap between the secondary valve 4 and the primary valve 5 is fitted, and the axial secondary valve 4 can move relative to the primary valve 5.

[0023] For ease of description, in this embodiment, the secondary valve 4, the primary valve 5 and the bushing 1 are all placed horizontally, and the right ends are their respective front ports.

[0024] The side wall of the bushing 1 is provided with a plurality of primary oil passage holes 11 uniformly in the circumferential direction near the front port, and the side wall of the bushing is provided with a plurality of secondary oil passage holes 12 uniformly in the circumferential direction behind the primary oil passage hole 11 and at a certain distance from the primary oil passage hole 11. A primary valve spring 6 is provided between the rear end of the primary valve 5 and the closed end of the bushing 1, and the side wall of the primary valve 5 is provided with a plurality of first oil holes 51 in the circumferential direction between the primary oil passage hole 11 and the secondary oil passage hole 12, the number of the first oil holes 51 is the same as the number of the secondary oil passage holes 12, and the first oil holes 51 and the secondary oil passage holes 12 correspond to each other in the circumferential direction. A secondary valve spring 3 is provided between the rear end of the secondary valve 4 and the closed end of the primary valve 5, and the side wall of the secondary valve 4 is provided with a plurality of second oil holes 41 uniformly in the circumferential direction, the second oil holes 41 are located in front of the first oil holes 51 in the axial direction, the number of the second oil holes 41 is the same as the number of the first oil holes 51, and the positions of the second oil holes 41 in the circumferential direction correspond to the first oil holes 51.

[0025] In the present invention, the inner side of the bushing 1 is provided with a first annular groove 121 at the position of the secondary oil passage hole 12, and the secondary oil passage hole 12 is provided at the bottom of the first annular groove 121; the outer side of the secondary valve 4 is provided with a second annular groove 411 at the position of the second oil hole 41, and the second oil hole 41 is provided at the bottom of the second annular groove 411. This structure ensures that when the primary valve 5 and the secondary valve 4 move to the left to the positions corresponding to the first oil hole 51 and the first annular groove 121, and the second annular groove 411 and the first oil hole 51, respectively, the oil is discharged through the second oil hole 41, the first oil hole 51 and the secondary oil passage hole 12.

[0026] In the present invention, a first through hole 13 is provided at the rear end of the side wall of the bushing 1, and a second through hole 52 is provided on the sealing plate of the primary valve 5. The second through hole 52 connects the space between the sealing plate of the primary valve 5 and the sealing plate of the secondary valve 4 with the space between the sealing plate of the primary valve 5 and the sealing plate of the bushing 1, and connects the space with the outside through the first through hole 13, so as to facilitate the inward movement of the primary valve 5 and the secondary valve 4.

[0027] In the present invention, the function of the sealing ring 2 is to achieve the seal between the bushing 1 and the housing, and the bushing 1 can realize the passage of the working medium to the multi-stage oil circuit. The primary and secondary valves cooperate with the primary and secondary valve springs respectively to realize the pressure division control function, and the pressure division function is realized by the matching design of the valve diameter and the spring force. During use, the working medium enters from the open end of the bushing 1 and acts on the primary and secondary valves at the same time until the liquid pressure is greater than the spring force of the primary valve spring 6. The primary valve 6 drives the secondary valve 4 to move to the left until the primary oil circuit hole 11 is opened. The working medium is output through the primary oil circuit hole 11 on the bushing 1, as shown in FIG. Figure 2 As shown, the medium is divided into two pressure channels through the primary oil passage hole 11. When the working medium continues to increase until the hydraulic pressure acting on the secondary valve 4 is greater than the spring force of the secondary valve spring 3, the secondary valve 4 moves to the left, and the second oil hole 41, the first oil hole 51 and the secondary oil passage hole 12 are connected to form a secondary pressure-dividing oil passage, and the medium is divided into two pressure channels and the primary oil passage hole at the same time, as shown in FIG. Figure 3 shown.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated partial pressure control valve assembly, characterized in that: It comprises a bushing (1), a primary valve (5) and a secondary valve (4), wherein the primary valve (5) and the secondary valve (4) are both shaft sleeve structures, and the front ports of the bushing (1), the primary valve (5) and the secondary valve (4) are all open and the rear ports are all closed; A first-stage oil passage hole (11) is formed on the side wall of the bushing (1) at a position adjacent to the front end port, and a second-stage oil passage hole (12) is formed at a position behind the first-stage oil passage hole (11); A primary valve (5) is movably mounted in the front end of the bushing (1); a primary valve spring (6) is arranged between the rear end of the primary valve (5) and the closed end of the bushing (1); a first oil hole (51) is provided on the side wall of the primary valve (5) at a position between the primary oil passage hole (11) and the secondary oil passage hole (12); and the position of the first oil hole (51) in the circumferential direction corresponds to the position of the secondary oil passage hole (12); A secondary valve (4) is movably mounted in the front end of the primary valve (5); a secondary valve spring (3) is arranged between the rear end of the secondary valve (4) and the closed end of the primary valve (5); a second oil hole (41) is provided on the side wall of the secondary valve (4); the second oil hole (41) is located in front of the first oil hole (51); and the position of the second oil hole (41) in the circumferential direction corresponds to that of the first oil hole (51).

2. The integrated partial pressure control valve assembly according to claim 1, characterized in that: The primary oil passage hole (11), the secondary oil passage hole (12), the first oil hole (51) and the second oil hole (41) are evenly arranged in a plurality in the circumferential direction.

3. The integrated partial pressure control valve assembly according to claim 1, characterized in that: The inner side surface of the bushing (1) is provided with a first annular groove (121) at the position of the secondary oil passage hole (12); and the outer side surface of the secondary valve (4) is provided with a second annular groove (411) at the position of the second oil hole (41).

4. The integrated partial pressure control valve assembly according to claim 1, characterized in that: A first through hole (13) is provided at the rear end of the side wall of the bushing (1), and a second through hole (52) is provided on the sealing plate of the primary valve (5).

5. The integrated partial pressure control valve assembly according to claim 1, characterized in that: A sealing groove is provided in the circumferential direction of the outer surface of the side wall of the bushing (1), and a sealing ring (2) is provided in the sealing groove.

Images