Structure for improving maintainability of interference fit type hydraulic valve

Abstract

The utility model discloses a structure for improving maintainability of an interference fit type hydraulic valve, which comprises a valve block and a hydraulic valve positioned in a valve block mounting hole, and is characterized in that a bushing is arranged between the valve block mounting hole and the hydraulic valve, an inner hole of the bushing is in interference fit with the hydraulic valve, and a sealing ring is arranged between the valve block mounting hole and the bushing. Through the application of the intermediate bushing between the valve block mounting hole and the hydraulic valve, the mounting convenience and maintainability of the interference fit type hydraulic valve can be effectively improved, the research and development cost of the interference fit type hydraulic valve and a hydraulic system is reduced, and the industrial application value is high.

Description

Technical Field

[0001] The utility model relates to a hydraulic valve application technology, in particular to a structure for improving the maintainability of an interference fit hydraulic valve. Background Art

[0002] As the demand for miniaturized and highly integrated hydraulic systems gradually increases, the application of interference fit hydraulic valves in hydraulic integrated products gradually increases. For interference fit hydraulic valves, the existing technology currently basically adopts a structure in which the hydraulic valve is directly installed in the mounting hole of the valve block, as shown in the attached manual. Figure 2 In the structure shown, the hydraulic valve 2 is directly installed in the mounting hole of the valve block 1 by using an interference fit structure. When the performance of the hydraulic valve 2 fails, after the hydraulic valve 2 is removed by using a special tool, the mounting hole of the valve block 1 will be damaged due to the limitation of the interference fit structural principle, and the sealing performance between the hydraulic valve 2 and the mounting hole of the valve block after reinstallation cannot be guaranteed.

[0003] It can be seen that due to the particularity of the valve installation method, when the hydraulic valve fails, disassembly and assembly of the hydraulic valve will cause damage to the valve body installation hole, so it cannot be disassembled and assembled repeatedly. For the assembly price of complex valve blocks, the research and development cost is high, making it difficult to troubleshoot and repair hydraulic valves. Summary of the invention

[0004] The purpose of the utility model is to solve the problem that due to the particularity of the installation method of the interference fit hydraulic valve, the valve block matched with the valve cannot be repeatedly disassembled and assembled, resulting in increased research and development and production costs, and to provide a structure for improving the maintainability of the interference fit hydraulic valve. The utility model improves the maintainability of the interference fit hydraulic valve through the installation structure of the improved interference fit hydraulic valve.

[0005] The above-mentioned technical problems of the present utility model are mainly solved through the following technical solutions: a structure for improving the maintainability of an interference fit hydraulic valve, comprising a valve block and a hydraulic valve located in a mounting hole of the valve block, wherein a bushing is provided between the mounting hole of the valve block and the hydraulic valve, an inner hole of the bushing and the hydraulic valve are interference fit, and a sealing ring is provided between the mounting hole of the valve block and the bushing.

[0006] In the aforementioned structure for improving the maintainability of an interference fit hydraulic valve, preferably, a sealing groove is provided in the valve block mounting hole, and the sealing ring is positioned in the sealing groove.

[0007] In the aforementioned structure for improving the maintainability of an interference fit hydraulic valve, preferably, the length of the bushing is greater than or equal to the length of the hydraulic valve.

[0008] In the aforementioned structure for improving the maintainability of an interference fit hydraulic valve, preferably, a limit block and an adjusting nut are provided at the outer end of the bushing facing the valve block mounting hole.

[0009] In the aforementioned structure for improving the maintainability of an interference fit hydraulic valve, preferably, a sealing ring is provided on the outer diameter of the limit block, and the limit block forms a sealing structure with the valve block mounting hole through the sealing ring.

[0010] In the aforementioned structure for improving the maintainability of an interference fit hydraulic valve, preferably, one or more sealing rings are provided between the valve block mounting hole and the bushing.

[0011] This technical solution is aimed at the interference fit hydraulic valve. An intermediate body, namely a bushing, is added between the original matching valve body (block) mounting hole and the hydraulic valve, so that the inner hole of the bushing replaces the function of the original valve body (block) mounting hole, and a sealing ring is used to seal between the bushing and the valve body (block) mounting hole. Therefore, when a problem occurs with the hydraulic valve, the bushing and the hydraulic valve are taken out as a whole, and the bushing is cut off to ensure the integrity of the hydraulic valve and protect the valve body mounting hole from damage. After the fault is solved, a new bushing can be replaced without scrapping the entire valve block, thereby improving the processability of product assembly and the maintainability of the product, thereby reducing the product's R&D and production costs.

[0012] Compared with the prior art, the beneficial effect of the utility model is that through the application of the intermediate bushing between the valve block mounting hole and the hydraulic valve, the installation convenience and maintainability of the interference fit hydraulic valve can be effectively improved, the research and development cost of the interference fit hydraulic valve and the hydraulic system can be reduced, and it has a high industrial application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a structural schematic diagram of the prior art.

[0015] In the figure: 1-valve block, 2-hydraulic valve, 3-bushing, 4-sealing ring. DETAILED DESCRIPTION

[0016] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0017] This embodiment provides a structure for improving the maintainability of an interference fit hydraulic valve, such as Figure 1 As shown, it includes a valve block 1, a hydraulic valve 2 located in the mounting hole of the valve block 1, a bushing 3 is arranged between the mounting hole of the valve block 1 and the hydraulic valve 2, an interference fit is set between the inner hole of the bushing 3 and the hydraulic valve 2, and a sealing ring 4 is arranged between the mounting hole of the valve block 1 and the bushing 2.

[0018] Specifically, a sealing groove is provided in the mounting hole of the valve block 1, and a sealing ring 4 is positioned in the sealing groove. The number of sealing rings 4 is selected to be one or more according to the specific specifications of the hydraulic valve 2.

[0019] The length of the bushing 3 is greater than that of the hydraulic valve 2. A limit block and an adjusting nut are provided at the outer end of the bushing 3 facing the mounting hole of the valve block 1 (the assembly inlet end); two sealing rings are provided on the outer diameter of the limit block, and the limit block forms a sealing structure with the mounting hole of the valve block 1 through the sealing ring.

[0020] Principle and application: This embodiment can be used as a new design or on the basis of the existing installation method. Since a bushing 3 is added between the mounting hole of the valve block 1 and the hydraulic valve 2, the interference fit structure is converted from between the hydraulic valve 2 and the valve block 1 to between the hydraulic valve 2 and the bushing 3, and a sealing ring 4 is added between the bushing 3 and the mounting hole of the valve block 1, thereby ensuring the overall sealing performance of the valve block 1. When the performance of the hydraulic valve 2 has problems, it is only necessary to take out the bushing 3 and the hydraulic valve 2 as a whole and replace the bushing 3, thereby ensuring the integrity of the valve block 1 and improving the maintainability of the entire product.

[0021] The above embodiments are for the purpose of explaining the present invention, but not for limiting the present invention. Any structure that is simply modified by ordinary technicians in this field without departing from the principle of the present technical solution and without creative work shall fall within the protection scope of the present invention.

Claims

1. A structure for improving the maintainability of an interference fit hydraulic valve, comprising a valve block (1), a hydraulic valve (2) located in a mounting hole of the valve block, and characterized in that A bushing (3) is provided between the valve block mounting hole and the hydraulic valve, an inner hole of the bushing and the hydraulic valve are in interference fit, and a sealing ring (4) is provided between the valve block mounting hole and the bushing.

2. A structure for improving the maintainability of an interference fit hydraulic valve according to claim 1, characterized in that: A sealing groove is provided in the mounting hole of the valve block (1), and a sealing ring (4) is positioned in the sealing groove.

3. A structure for improving the maintainability of an interference fit hydraulic valve according to claim 1 or 2, characterized in that: The length of the bushing (3) is greater than or equal to the length of the hydraulic valve (2).

4. A structure for improving the maintainability of an interference fit hydraulic valve according to claim 1 or 2, characterized in that: The outer end of the bushing (3) facing the mounting hole of the valve block (1) is provided with a limit block and an adjusting nut.

5. The structure for improving the maintainability of an interference fit hydraulic valve according to claim 4, characterized in that: A sealing ring is provided on the outer diameter of the limit block, and the limit block forms a sealing structure with the mounting hole of the valve block (1) through the sealing ring.

6. The structure for improving the maintainability of an interference fit hydraulic valve according to claim 1, characterized in that: One or more sealing rings (4) are provided between the mounting hole of the valve block (1) and the bushing (3).

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