Double-acting pressure retaining valve block

Abstract

The utility model provides a double-acting pressure retaining valve block, which relates to the technical field of valve blocks and comprises a pressure retaining valve main body, an upper cavity oil inlet is arranged on one side of the upper surface of the pressure retaining valve main body, a lower cavity oil inlet is arranged on the other side of the upper surface of the pressure retaining valve main body, and a reversing valve is mounted in the middle of the inside of the pressure retaining valve main body. The pressure retaining valve comprises a pressure retaining valve body, an upper cavity oil inlet is formed in the pressure retaining valve body, an upper cavity oil outlet is formed in one end of the pressure retaining valve body, a lower cavity oil outlet is formed in the other end of the pressure retaining valve body, and adjusting assemblies are arranged at the two ends of the pressure retaining valve body. The reversing valve is installed in the middle of the interior of the pressure retaining valve body, and the functions of pressure retaining and throttling of the oil cylinder can be achieved. Meanwhile, the automatic reversing effect of the upper cavity and the lower cavity of the oil cylinder can be achieved through oil pressure.

Description

Technical Field

[0001] The utility model relates to the technical field of valve blocks, in particular to a double-acting pressure-maintaining valve block. Background Art

[0002] The pressure-maintaining valve is a reversing valve capable of controlling the oil discharge hole of the oil pipe, such as the pressure-maintaining valve for hydraulic one-way clamp of patent application number CN202221809779.8, comprising an aluminum cover of a pressure-maintaining valve and a main body of a pressure-maintaining valve, a piston is arranged and installed inside the aluminum cover of the pressure-maintaining valve, a pressure relief rod is connected through the inside of the piston, a pressure cap is arranged on the outside of the pressure relief rod, a check seat is arranged inside the main body of the pressure-maintaining valve, a steel ball seat is arranged on the outside of the check seat, a spring seat is arranged at the bottom of the steel ball seat, a guide sleeve is arranged on the outside of the steel ball seat, an oil inlet and drain port is arranged on the outer wall of the aluminum cover of the pressure-maintaining valve, and a pressure relief air inlet is arranged on the outer wall of the aluminum cover of the pressure-maintaining valve. The utility model is applicable to all hydraulic industries, so that the oil pressure remains stable and consistent, and the mechanical pressure is always maintained in the event of power failure and gas failure, so as to prevent mechanical damage and personal safety caused by lack of oil pressure due to power failure. The pressure-maintaining valve in the prior art cannot automatically perform reversing and cannot control the flow of liquid. Utility Model Content

[0003] The main purpose of the utility model is to provide a double-acting pressure-maintaining valve block, which can effectively solve the problem that the pressure-maintaining valve in the background technology cannot automatically switch and cannot control the flow of liquid.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a double-acting pressure-maintaining valve block, including a pressure-maintaining valve body, an upper chamber oil inlet is arranged on one side of the upper surface of the pressure-maintaining valve body, a lower chamber oil inlet is arranged on the other side of the upper surface of the pressure-maintaining valve body, a reversing valve is installed in the middle of the pressure-maintaining valve body, an upper chamber oil outlet is arranged at one end of the pressure-maintaining valve body, a lower chamber oil outlet is arranged at the other end of the pressure-maintaining valve body, and adjustment components are arranged at both ends of the pressure-maintaining valve body.

[0005] Preferably, the regulating assembly comprises two mounting plates, and the two mounting plates are respectively fixedly mounted on two sides of the upper surface of the pressure-maintaining valve body.

[0006] Preferably, a mounting sleeve is fixedly mounted on the front surface of the mounting plate, and a guide column is mounted in the middle of the mounting sleeve.

[0007] Preferably, an internal thread is provided on the inner wall of the mounting sleeve, and an external thread is provided on the side of the guide column, and the external thread is meshedly connected with the internal thread.

[0008] Preferably, the guide column movably passes through the interior of the pressure-maintaining valve body, a connecting rod is rotatably mounted on the top end of the guide column, and the connecting rod is slidably arranged on the inner wall of the pressure-maintaining valve body.

[0009] Preferably, a mounting plate is fixedly mounted on the front surface of the connecting rod, and a blocking block is fixedly mounted on the front surface of the mounting plate.

[0010] Preferably, the blocking block is conical.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] (1) By delivering oil to the upper chamber oil inlet and the lower chamber oil inlet, the oil will flow out from the upper chamber oil outlet and the lower chamber oil outlet respectively. By installing a reversing valve in the middle of the pressure-maintaining valve body, it can play the role of maintaining pressure and throttling for the oil cylinder. At the same time, the upper and lower chambers of the oil cylinder can be automatically reversing through oil pressure.

[0013] (2) When it is necessary to control the oil outflow speed, the staff will rotate the guide column, and when the external thread and the internal thread are engaged, the guide column will move forward, and at the same time, the connecting rod will be driven forward, and the blocking block will be driven forward to set the blocking block at the outlet of the reversing valve. Because the blocking block is set in a conical shape, when the blocking block moves forward, the longer the distance the blocking block moves, the larger the space at the outlet of the reversing valve will be occupied by the blocking block, thereby reducing the amount of oil outflow, and vice versa, it can increase the amount of oil outflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of a double-acting pressure-maintaining valve block of the utility model;

[0015] Figure 2 It is a side view structural schematic diagram of a double-acting pressure-maintaining valve block of the utility model;

[0016] Figure 3 The utility model is a schematic diagram of the installation sleeve structure of a double-acting pressure-maintaining valve block.

[0017] In the figure: 1. Pressure-maintaining valve body; 2. Upper chamber oil inlet; 3. Lower chamber oil inlet; 4. Reversing valve; 5. Adjusting assembly; 501. Mounting plate; 502. Mounting sleeve; 503. Connecting rod; 504. Mounting plate; 505. Blocking block; 506. Internal thread; 507. Guide column; 508. External thread; 6. Upper chamber oil outlet; 7. Lower chamber oil outlet. DETAILED DESCRIPTION

[0018] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] like Figure 1 , 2 As shown, a double-acting pressure-maintaining valve block includes a pressure-maintaining valve body 1, an upper cavity oil inlet 2 is provided on one side of the upper surface of the pressure-maintaining valve body 1, a lower cavity oil inlet 3 is provided on the other side of the upper surface of the pressure-maintaining valve body 1, a reversing valve 4 is installed in the middle of the pressure-maintaining valve body 1, an upper cavity oil outlet 6 is provided at one end of the pressure-maintaining valve body 1, a lower cavity oil outlet 7 is provided at the other end of the pressure-maintaining valve body 1, and adjustment components 5 are provided at both ends of the pressure-maintaining valve body 1.

[0020] like Figure 2 , 3As shown, the adjustment assembly 5 includes two mounting plates 501, and the two mounting plates 501 are fixedly mounted on both sides of the upper surface of the pressure-maintaining valve body 1, and a mounting sleeve 502 is fixedly mounted on the front surface of the mounting plate 501. A guide column 507 is installed in the middle of the mounting sleeve 502. An internal thread 506 is arranged on the inner wall of the mounting sleeve 502, and an external thread 508 is arranged on the side of the guide column 507. The external thread 508 is meshed with the internal thread 506. The guide column 507 moves through the interior of the pressure-maintaining valve body 1. The guide column 507 A connecting rod 503 is rotatably installed at the top, and the connecting rod 503 is slidably arranged on the inner wall of the pressure-maintaining valve body 1. A mounting plate 504 is fixedly installed on the front surface of the connecting rod 503, and a blocking block 505 is fixedly installed on the front surface of the mounting plate 504. The blocking block 505 is conical. When it is necessary to control the oil outflow speed, the staff rotates the guide column 507 at this time. Because the two mounting plates 501 are respectively fixedly installed on both sides of the upper surface of the pressure-maintaining valve body 1, a mounting sleeve 502 is fixedly installed on the front surface of the mounting plate 501. The middle of the mounting sleeve 502 A guide column 507 is installed, an internal thread 506 is arranged on the inner wall of the installation sleeve 502, an external thread 508 is arranged on the side of the guide column 507, the external thread 508 is meshed and connected with the internal thread 506, the guide column 507 moves through the inside of the pressure-maintaining valve body 1, a connecting rod 503 is rotatably installed on the top of the guide column 507, the connecting rod 503 is slidably arranged on the inner wall of the pressure-maintaining valve body 1, a mounting plate 504 is fixedly installed on the front surface of the connecting rod 503, a blocking block 505 is fixedly installed on the front surface of the mounting plate 504, and the blocking block 505 is conical and is fixed on the external thread 50 When 8 is meshed with the internal thread 506, the guide column 507 will move forward, and at the same time, the connecting rod 503 will be driven forward, and the blocking block 505 will be driven forward to set the blocking block 505 at the outlet of the reversing valve 4. Because the blocking block 505 is set in a conical shape, when the blocking block 505 moves forward, the longer the distance the blocking block 505 moves, the larger the space at the outlet of the reversing valve 4 will be occupied by the blocking block 505, thereby reducing the outflow of oil, and vice versa.

[0021] The working principle of this double-acting pressure-maintaining valve block:

[0022] When in use, oil is delivered to the upper chamber oil inlet 2 and the lower chamber oil inlet 3, and the oil will flow out from the upper chamber oil outlet 6 and the lower chamber oil outlet 7 respectively. The reversing valve 4 is installed in the middle of the pressure-maintaining valve body 1, which can play the role of maintaining pressure and throttling for the oil cylinder. At the same time, the upper and lower chambers of the oil cylinder can be automatically reversing by oil pressure, and when it is necessary to control the oil outflow speed, the staff rotates the guide column 507 at this time, and because the two mounting plates 501 are respectively fixedly installed on both sides of the upper surface of the pressure-maintaining valve body 1, the mounting sleeve 502 is fixedly installed on the front surface of the mounting plate 501, and the guide column 507 is installed in the middle of the mounting sleeve 502. The inner wall of the mounting sleeve 502 is provided with an internal thread 506, and the side of the guide column 507 is provided with an external thread 508, and the external thread 508 is meshed with the internal thread 506. The guide column 507 moves through the interior of the pressure-maintaining valve body 1, and the top of the guide column 507 is rotatably installed with a connecting rod 503, and the connecting rod 503 is slidably set on the inner wall of the pressure-maintaining valve body 1. A mounting plate 504 is fixedly mounted on the front surface of the connecting rod 503, and a blocking block 505 is fixedly mounted on the front surface of the mounting plate 504. The blocking block 505 is conical, and when the external thread 508 is meshed with the internal thread 506, the guide column 507 will move forward, and at the same time, the connecting rod 503 will be driven to move forward, and the blocking block 505 will be driven to move forward. The blocking block 505 is set at the outlet of the reversing valve 4, and because the blocking block 505 is set in a conical shape, when the blocking block 505 moves forward, the longer the distance the blocking block 505 moves, the larger the space at the outlet of the reversing valve 4 will be occupied by the blocking block 505, thereby reducing the outflow of oil, and vice versa.

[0023] The above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A double-acting pressure-maintaining valve block, comprising a pressure-maintaining valve body (1), characterized in that: An upper cavity oil inlet (2) is provided on one side of the upper surface of the pressure-maintaining valve body (1), and a lower cavity oil inlet (3) is provided on the other side of the upper surface of the pressure-maintaining valve body (1). A reversing valve (4) is installed in the middle of the pressure-maintaining valve body (1). An upper cavity oil outlet (6) is provided at one end of the pressure-maintaining valve body (1), and a lower cavity oil outlet (7) is provided at the other end of the pressure-maintaining valve body (1). Adjustment components (5) are provided at both ends of the pressure-maintaining valve body (1).

2. A double-acting pressure-maintaining valve block according to claim 1, characterized in that: The regulating assembly (5) comprises two mounting plates (501), and the two mounting plates (501) are respectively fixedly mounted on two sides of the upper surface of the pressure-retaining valve body (1).

3. A double-acting pressure-maintaining valve block according to claim 2, characterized in that: A mounting sleeve (502) is fixedly mounted on the front surface of the mounting plate (501), and a guide column (507) is mounted in the middle of the mounting sleeve (502).

4. A double-acting pressure-maintaining valve block according to claim 3, characterized in that: An internal thread (506) is provided on the inner wall of the mounting sleeve (502), and an external thread (508) is provided on the side of the guide column (507), wherein the external thread (508) is meshedly connected with the internal thread (506).

5. A double-acting pressure-maintaining valve block according to claim 4, characterized in that: The guide column (507) movably passes through the interior of the pressure-maintaining valve body (1); a connecting rod (503) is rotatably mounted on the top end of the guide column (507); and the connecting rod (503) is slidably arranged on the inner wall of the pressure-maintaining valve body (1).

6. A double-acting pressure-maintaining valve block according to claim 5, characterized in that: A mounting plate (504) is fixedly mounted on the front surface of the connecting rod (503), and a blocking block (505) is fixedly mounted on the front surface of the mounting plate (504).

7. A double-acting pressure-maintaining valve block according to claim 6, characterized in that: The blocking block (505) is conical.

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