Novel sealing anti-rotation valve of high-pressure water system

Abstract

The utility model discloses a novel sealing anti-rotation valve of a high-pressure water system, which relates to the technical field of transmission systems of forging hydraulic presses and comprises a valve body, a mounting groove is arranged on the valve body along the vertical direction, a liquid inlet and a liquid outlet are arranged on the side wall of the valve body, and the valve body is sequentially provided with a spring cover fixedly connected with the valve body in an inner cavity of the mounting groove. A first spring is arranged in an inner cavity of the spring cover; the screw plug is arranged on the spring cover in a sleeving mode and fixedly connected with the valve body. The upper sealing seat is fixedly connected with the screw plug; a liquid inlet end is arranged on the side wall of the valve cup, a limiting groove is formed in the top of the valve cup, a limiting block is arranged in the limiting groove and fixedly connected with the upper sealing seat, and the valve element penetrates through an inner cavity of the valve cup and is in sliding connection with the valve cup; the valve seat is fixedly connected with the valve body, and the valve abuts against the valve seat. The lower sealing seat is fixedly connected with the valve body; the pressure release valve is connected with the first spring and sequentially penetrates through the screw plug, the upper sealing seat, the valve cup, the valve element, the valve seat and the lower sealing seat. The sealing structure is reasonable in design structure, and the sealing seat and the valve cup can be effectively prevented from rotating.

Description

Technical Field

[0001] This utility model relates to the technical field of transmission systems for forging hydraulic presses, specifically a novel sealing anti-rotation valve for high-pressure water systems. Background Technology

[0002] Hydraulic presses are based on Pascal's principle. They transmit pressure through a hydraulic system to achieve high-strength and high-precision forming, pressing, bending and other processes. In the context of rapid economic development, the power, metallurgy, heavy machinery and defense industries all need large forgings, and large forgings can only be made by large hydraulic presses.

[0003] In the existing technology, the main distribution valve core in the heavy-duty standard of hydraulic presses all adopts U-shaped sealing rings, and the main valve core often rotates during use, which causes severe wear on the main valve body and affects the service life of the valve body.

[0004] To address this issue, we have developed a novel sealing anti-rotation valve for high-pressure water systems to solve the problem of main valve core rotation. Utility Model Content

[0005] 1) Technical problems to be solved

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a new type of sealing anti-rotation valve for high-pressure water systems.

[0007] (ii) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a novel sealing anti-rotation valve for a high-pressure water system, comprising a valve body, characterized in that: the valve body is provided with an installation groove along the vertical direction, and an inlet and an outlet are provided on the side wall, the inlet, the outlet and the inner cavity of the installation groove are connected;

[0009] The valve body is provided with the following sequentially within the inner cavity of the mounting groove:

[0010] A spring cover is fixedly connected to the valve body, and a first spring is provided in the inner cavity of the spring cover;

[0011] A screw plug is sleeved on the outer periphery of the spring cover, and the screw plug is fixedly connected to the valve body;

[0012] Upper sealing seat, the upper sealing seat and the screw plug are fixedly connected;

[0013] A valve cup, wherein the side wall of the valve cup is provided with an inlet end, the top of the valve cup is provided with a limiting groove, a limiting block is provided in the limiting groove, and the limiting block is fixedly connected to the upper sealing seat;

[0014] A valve core, which passes through the inner cavity of the valve cup and is slidably connected to the valve cup;

[0015] A valve seat, which is fixedly connected to the valve body, and a valve core abutting against the valve seat;

[0016] The lower sealing seat is fixedly connected to the valve body;

[0017] A pressure relief valve is connected to the first spring and is sequentially disposed through the screw plug, the upper sealing seat, the valve cup, the valve core, the valve seat, and the lower sealing seat.

[0018] Furthermore, the valve cup is provided with multiple limiting grooves, and each limiting groove has a limiting block in its inner cavity.

[0019] Furthermore, the plurality of limiting grooves are circumferentially distributed along the axial direction of the valve cup.

[0020] Furthermore, the limiting groove is a rectangular groove, and the limiting block is a rectangular block.

[0021] Furthermore, the sidewall of the limiting block is in close contact with the sidewall of the limiting groove.

[0022] Furthermore, a first sealing ring is sandwiched between the upper sealing seat and the valve cup;

[0023] A second sealing ring is sandwiched between the valve seat and the valve body;

[0024] A third sealing ring is sandwiched between the lower sealing seat and the valve body.

[0025] Furthermore, the valve seat is tilted at the top, the valve core is tilted at the bottom, and the tilting directions of the valve seat and the valve core are the same.

[0026] (iii) Beneficial effects:

[0027] Compared with existing technologies, this novel sealing anti-rotation valve for high-pressure water systems has the following advantages:

[0028] I. By setting a limiting groove and a limiting block, this utility model can provide stable limiting for the sealing seat and the valve cup, preventing rotation between the two and thus ensuring the service life of the valve body.

[0029] Second, by setting multiple limiting grooves, which are evenly distributed circumferentially, this utility model can prevent excessive local stress and reduce the service life of the valve body. Attached Figure Description

[0030] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0031] In the diagram: 1. Valve body; 2. Plug; 3. Spring cover; 31. First spring; 4. Upper sealing seat; 41. Sealing element; 5. Pressure relief valve; 6. Valve cup; 61. Limiting groove; 62. Limiting block; 63. First sealing ring; 7. Valve core; 8. Valve seat; 81. Second sealing ring; 9. Lower sealing seat; 91. Third sealing ring. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] like Figure 1 As shown, this utility model provides a technical solution: a novel sealing anti-rotation valve for a high-pressure water system, comprising a valve body 1, a screw plug 2, a spring cover 3, an upper sealing seat 4, a pressure relief valve 5, a valve cup 6, a valve core, a valve seat 8, and a lower sealing seat 9.

[0034] Reference Figure 1 The valve body 1 has a mounting groove along the vertical direction, and the valve body 1 has an inlet and an outlet on the side wall of the mounting groove, wherein the inlet is located below the outlet.

[0035] Reference Figure 1 The screw plug 2 is inserted through the top of the mounting groove, the screw plug 2 is coaxially arranged with the mounting groove, and the screw plug 2 is fixedly connected to the valve body 1.

[0036] Reference Figure 1 The screw plug 2 has a through groove running vertically through its middle part. The inner cavity of the through groove is provided with a spring cover 3. The spring cover 3 and the screw plug 2 are coaxially fixedly connected. The inner cavity of the spring cover 3 is provided with a first spring 31. The first spring 31 is vertically arranged, and the extension and retraction direction of the first spring 31 is consistent with the axial direction of the through groove. The top of the first spring 31 is fixedly connected to the spring cover 3.

[0037] Reference Figure 1 The upper sealing seat 4 is installed in the mounting groove of the valve body 1, and the upper sealing seat 4 is located above the liquid inlet. The upper sealing seat 4 is fixedly connected to the valve body 1.

[0038] Reference Figure 1 Multiple first positioning bolts are provided between the upper sealing seat 4 and the screw plug 2. The multiple first positioning bolts are evenly distributed circumferentially in the axial direction of the spring cover 3. The first positioning bolts are sequentially inserted into the screw plug 2 and the upper sealing seat 4, and are threadedly connected to the screw plug 2 and the upper sealing seat 4.

[0039] Reference Figure 1The top of the upper sealing seat 4 is provided with a positioning groove running vertically through it. The inner cavity of the positioning groove is provided with a sealing element 41 and a pressure relief valve 5. The sealing element 41 is coaxially arranged with the positioning groove, and the sealing element 41 and the upper sealing seat 4 are fixedly connected. The pressure relief valve 5 passes through the sealing element 41 and can slide along the axial direction of the sealing element 41.

[0040] Reference Figure 1 The valve cup 6 is located in the mounting groove and at the end of the upper sealing seat 4 away from the screw plug 2. The valve cup 6 is located on the side of the liquid inlet. The side wall of the valve cup 6 is provided with a liquid inlet end. The top of the valve cup 6 is provided with a limiting groove 61. Here, there are multiple limiting grooves 61. The multiple limiting grooves 61 are evenly distributed circumferentially along the axial direction of the valve cup 6, and the inner cavity of the limiting groove 61 is connected to the inner cavity of the valve cup 6.

[0041] Reference Figure 1 Each limiting groove 61 has a limiting block 62 in its inner cavity. The limiting block 62 passes through the limiting groove 61 and is fixedly connected to the upper sealing seat 4. The limiting groove 61 is used to accommodate the limiting block 62.

[0042] Reference Figure 1 The valve core 7 is located in the inner cavity of the valve cup 6 and can slide along the axial direction of the valve cup 6. The bottom of the valve core 7 is tapered.

[0043] Reference Figure 1 The top wall of the valve cup 6 is provided with a first sealing ring 63, which is sandwiched between the upper sealing seat 4 and the valve cup 6.

[0044] Reference Figure 1 The valve core 7 has a positioning element in its inner cavity. The positioning element is fixedly connected to the valve core 7 by bolts. The positioning element has a cavity inside. The pressure relief valve 5 is inserted through the positioning element and the valve core 7 in sequence. The valve core 7 has a limiting sleeve in its cavity. The limiting sleeve is fitted onto the pressure relief valve 5 and is fixedly connected to the pressure relief valve 5.

[0045] Reference Figure 1 In this embodiment, the valve seat 8 is an annular structure and is located inside the mounting groove. The valve seat 8 and the valve body 1 are fixedly connected. The top wall of the valve seat 8 is inclined, and the inclination angle of the inner wall of the valve seat 8 is consistent with the inclination angle of the bottom of the valve core 7. The top wall of the valve seat 8 contacts the bottom wall of the valve core 7, and the contact surface remains flat.

[0046] Reference Figure 1 The valve seat 8 has multiple insertion holes on its top. The insertion holes are vertically arranged and are evenly distributed circumferentially along the axis of the valve seat 8. Each insertion hole has a second positioning bolt in its inner cavity. The second positioning bolt is vertically arranged and passes through the valve cup 6 and the valve seat 8 in sequence. The second positioning bolt is threadedly connected to the valve cup 6 and the valve seat 8.

[0047] Reference Figure 1 The bottom of the valve seat 8 is provided with a sealing groove. In this embodiment, the sealing groove is preferably an annular groove, and the vertical cross-section of the sealing groove is a trapezoidal cross-section. The inner cavity of the sealing groove is provided with a second sealing ring 81, which is sandwiched between the valve seat 8 and the valve body 1, and the inner wall and outer wall of the second sealing ring 81 are respectively attached to the valve seat 8 and the valve body 1.

[0048] Reference Figure 1 The bottom of the valve body 1 is provided with a support groove, the lower sealing seat 9 is installed in the support groove, and the top of the lower sealing seat 9 is provided with a third sealing ring 91, which is sandwiched between the lower sealing seat 9 and the valve body 1.

[0049] Reference Figure 1 The pressure relief valve 5 passes through the lower sealing seat 9, and the pressure relief valve 5 and the lower sealing seat 9 are connected.

[0050] The implementation principle of a novel sealing anti-rotation valve for a high-pressure water system is as follows: The operator first connects the valve body 1, screw plug 2, spring cover 3, upper sealing seat 4, pressure relief valve 5, valve cup 6, valve core 7, valve seat 8, and lower sealing seat 9 accordingly. The first spring 31 abuts against the pressure relief valve 5 to provide a downward force to the pressure relief valve 5.

[0051] During installation, the operator ensures that the limiting block 62 is positioned in the limiting groove 61, thereby limiting the movement between the screw plug 2 and the valve cup 6, effectively preventing rotation between them and extending the overall service life of the device.

Claims

1. A new type of sealed anti-rotation valve for high pressure water systems, comprising a valve body (1), characterized in that: The valve body (1) is provided with an installation groove in the vertical direction, and has an inlet and an outlet on the side wall. The inlet, outlet and the inner cavity of the installation groove are connected. The valve body (1) is provided with the following in sequence in the inner cavity of the mounting groove: A spring cover (3) is fixedly connected to the valve body (1), and a first spring (31) is provided in the inner cavity of the spring cover (3); A screw plug (2) is sleeved on the outer periphery of the spring cover (3), and the screw plug (2) is fixedly connected to the valve body (1); Upper sealing seat (4), the upper sealing seat (4) and the screw plug (2) are fixedly connected; Valve cup (6), the valve cup (6) has an inlet end on its side wall, the valve cup (6) has a limiting groove (61) on its top, a limiting block (62) is provided in the limiting groove (61), and the limiting block (62) is fixedly connected to the upper sealing seat (4); Valve core (7), the valve core (7) passes through the inner cavity of the valve cup (6) and is slidably connected to the valve cup (6); Valve seat (8), the valve seat (8) is fixedly connected to the valve body (1), and the valve core (7) abuts against the valve seat (8); The lower sealing seat (9) is fixedly connected to the valve body (1); The pressure relief valve (5) is connected to the first spring (31) and is sequentially inserted through the screw plug (2), the upper sealing seat (4), the valve cup (6), the valve core (7), the valve seat (8) and the lower sealing seat (9).

2. A new seal anti-rotation valve for high pressure water system according to claim 1, characterized in that: The valve cup (6) is provided with multiple limiting grooves (61), and each limiting groove (61) has a limiting block (62) in its inner cavity.

3. A new seal anti-rotation valve for high pressure water system according to claim 2, characterized in that: The plurality of limiting grooves (61) are evenly distributed circumferentially along the axial direction of the valve cup (6).

4. A new seal anti-rotation valve for high pressure water system according to claim 2, characterized in that: The limiting groove (61) is a rectangular groove, and the limiting block (62) is a rectangular block.

5. A new seal anti-rotation valve for high pressure water system according to claim 1, characterized in that: The sidewall of the limiting block (62) is in close contact with the sidewall of the limiting groove (61).

6. A new seal anti-rotation valve for high pressure water system according to claim 1, characterized in that: A first sealing ring (63) is sandwiched between the upper sealing seat (4) and the valve cup (6); A second sealing ring (81) is sandwiched between the valve seat (8) and the valve body (1); A third sealing ring (91) is sandwiched between the lower sealing seat (9) and the valve body (1).

7. A new seal anti-rotation valve for high pressure water system according to claim 1, characterized in that: The valve seat (8) is inclined at the top, and the valve core (7) is inclined at the bottom, and the inclination directions of the valve seat (8) and the valve core (7) are the same.

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