A cylinder balancing valve for high pressure cylinder

Abstract

The utility model discloses an oil cylinder balancing valve for a high-pressure oil cylinder, which comprises: a balancing valve body is arranged inside a balancing pipe, a sealing member 1 is arranged on the outer surface of the balancing valve body, a sealing groove is arranged inside the sealing member 1, a raised inner ring is arranged on the inner side surface of the sealing groove, a sealing ring 2 is fitted inside the sealing groove, a groove 1 is arranged on the side surface of the sealing ring 2, the width and depth of the groove 1 are consistent with the width and depth of the inner ring, a sealing member 2 is arranged on one end of the balancing valve body away from the sealing member 1, a plurality of grooves 2 are symmetrically arranged on the surface of the sealing member 2, the central grooves of a plurality of grooves 2 are set as shallow grooves, and the two sides of a plurality of grooves 2 are set as deep grooves, a sealing ring 1 is fitted inside the groove 2 of the sealing member 2, a pressure sensor is fixedly connected to the upper surface of the balancing pipe, which plays the effect of sealing and isolating the overflow of liquid oil, thereby avoiding the insensitive response of the balancing valve and ensuring the stability of the pressure on both sides of the high-pressure oil cylinder.

Description

Technical Field

[0001] The utility model relates to the technical field of oil cylinder balancing valves, in particular to an oil cylinder balancing valve for a high-pressure oil cylinder. Background Art

[0002] The balancing valve, also known as the speed limiter, is an externally controlled internal leakage one-way sequence valve, which is used together with a one-way valve and a sequence valve. In the hydraulic circuit, the balancing valve can lock the oil in the hydraulic cylinder or motor oil circuit, so that the hydraulic cylinder or motor will not slide down due to the deadweight of the load, and at this time it plays a locking role. When the hydraulic cylinder or motor needs to move, it passes through another oil circuit, and at the same time passes through the external oil circuit of the balancing valve to control the sequence valve to open the circuit to complete its movement.

[0003] The high-pressure cylinder balancing valve balances the pressure on both sides of the cylinder by controlling the position of the valve core, thereby achieving the balance of the cylinder. When the pressure on both sides of the cylinder is unbalanced, the balancing valve will sense the pressure difference and adjust the position of the valve core. When the pressure on one side of the cylinder is higher, the balancing valve will open to allow the high-pressure oil to flow into the low-pressure side, thereby balancing the pressure on both sides. When the pressure on both sides of the cylinder is balanced, the balancing valve will close to stop the flow of liquid and maintain the balanced state of the cylinder. However, the sealing ring of the traditional balancing valve is a combination of a sealing groove and a sealing ring or a metal sealing ring. Although it can play a sealing role, the structure is relatively simple. If it is used for a long time and there is no time to replace it, the seal may not be tight, and there is even the possibility of oil spillage. During the use of the traditional balancing valve, the operator will need to make adjustments according to the actual situation, which is not only time-consuming and labor-intensive, but also requires repeated adjustments of the adjusting rod. Therefore, we propose a cylinder balancing valve for high-pressure cylinders to solve the above problems. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art, and provides a cylinder balancing valve for a high-pressure oil cylinder. By means of two sets of sealing members arranged on the surface of the balancing valve body, and by using the inner ring in the sealing groove and the groove one of the sealing ring to fit together, the effect of sealing and isolating the overflow of liquid oil is achieved, thereby avoiding the balancing valve from being insensitive to response and failing to balance the pressure inside the high-pressure oil cylinder. By arranging a pressure sensor at a position where the balancing pipe is connected to the balancing valve body, a relatively accurate pressure value between the high-pressure oil cylinder and the balancing valve can be quickly understood, so that the balancing valve body can automatically adjust the regulating valve inside it to ensure the stability of the pressure on both sides of the high-pressure oil cylinder.

[0005] The utility model also provides a cylinder balancing valve for a high-pressure oil cylinder as mentioned above, comprising: a balancing pipe, a balancing valve body is arranged inside the balancing pipe, a sealing member 1 is arranged on the outer surface of the balancing valve body, a sealing groove is provided inside the sealing member 1, a raised inner ring is provided on the inner side surface of the sealing groove, a sealing ring 2 is fitted inside the sealing groove, a groove 1 is provided on the side surface of the sealing ring 2, the width and depth of the groove 1 are consistent with the width and depth of the inner ring, a sealing member 2 is provided at one end of the balancing valve body away from the sealing member 1, a plurality of grooves 2 are symmetrically provided on the surface of the sealing member 2, a plurality of central grooves of the grooves 2 are set as shallow grooves, a plurality of sides of the grooves 2 are set as deep grooves, a sealing ring 1 is fitted inside the groove 2 of the sealing member 2, and a pressure sensor is fixedly connected to the upper surface of the balancing pipe.

[0006] According to the utility model, a cylinder balancing valve for a high-pressure oil cylinder, the balancing valve body is mainly composed of an adjusting rod, a spring, a valve core, and a valve seat, and is used to balance the pressure on both sides of the high-pressure oil cylinder, thereby achieving the balance of the oil cylinder.

[0007] According to the utility model, a cylinder balancing valve for a high-pressure oil cylinder is provided with an oil inlet hole on the front surface of the balancing pipe, and the inside of the oil inlet hole is connected to the control valve inside the balancing valve body, which is used to connect with the high-pressure oil cylinder and form an oil inlet channel.

[0008] According to the oil cylinder balancing valve for high-pressure oil cylinders described in the utility model, a display panel is fixedly connected to the upper surface of the balancing pipe, and the display panel and the pressure sensor are at the same horizontal plane, and are used to display the pressure value detected inside the high-pressure oil cylinder.

[0009] According to the utility model, a cylinder balancing valve for a high-pressure oil cylinder, one end of the regulating rod away from the sealing member is fixedly connected to the spring, and the regulating rod is rotatably connected to the balancing pipe, so as to play the role of regulating the valve core.

[0010] According to the utility model, a cylinder balancing valve for a high-pressure oil cylinder, the end of the regulating rod away from the spring is fixedly connected to a support frame, and the middle of the support frame is fixedly connected to a micro motor through a shaft rod, which is used to support and fix the micro motor and enable it to provide power for the rotation of the regulating rod.

[0011] According to the oil cylinder balancing valve for high-pressure oil cylinders described in the utility model, the bottom surface of the balancing pipe is fixedly connected with a support seat, the upper surface of the support seat is provided with a support groove, and the balancing pipe is located inside the support groove, so as to maintain the stability of the balancing pipe.

[0012] According to the utility model, a cylinder balancing valve for a high-pressure oil cylinder is fixedly connected to the bottom surface of the support seat, and the high-pressure oil cylinder is connected to the balancing valve body through a hydraulic pipeline, so that the balancing valve body can maintain the balance of the high-pressure oil cylinder.

[0013] Beneficial Effects

[0014] 1. Compared with the prior art, the oil cylinder balancing valve for the high-pressure oil cylinder has two sets of seals arranged on the surface of the balancing valve body, and utilizes the inner ring in the sealing groove and the groove one of the sealing ring 2 to fit together, so as to achieve the effect of sealing and isolating the oil from overflowing, thereby avoiding the balancing valve from being insensitive to reaction and failing to balance the pressure inside the high-pressure oil cylinder.

[0015] 2. Compared with the prior art, the pressure sensor is set at the position where the high-pressure oil cylinder balance valve is connected to the balance valve body through the balance pipe, which can quickly understand the more accurate pressure value between the high-pressure oil cylinder and the balance valve, so that the balance valve body can automatically adjust the regulating valve inside it to ensure the stability of the pressure on both sides of the high-pressure oil cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0017] Figure 1 This is the overall structure diagram of the oil cylinder balancing valve for the high-pressure oil cylinder of the utility model;

[0018] Figure 2 It is a top view of the oil cylinder balancing valve for the high-pressure oil cylinder of the utility model;

[0019] Figure 3 It is a cross-sectional view of the oil cylinder balancing valve for the high-pressure oil cylinder of the utility model;

[0020] Figure 4 This is a structural diagram of a cylinder balance valve seal for a high-pressure cylinder of the utility model;

[0021] Figure 5 This is a structural diagram of a cylinder balance valve support seat for a high-pressure cylinder of the utility model.

[0022] Legend:

[0023] 1. High-pressure oil cylinder; 2. Support seat; 21. Support groove; 3. Balance pipe; 4. Pressure sensor; 5. Display board; 6. Micro motor; 7. Support frame; 8. Balance valve body; 9. Adjustment rod; 10. Valve core; 11. Sealing ring 1; 12. Sealing part 1; 13. Sealing part 2; 14. Sealing ring 2. DETAILED DESCRIPTION

[0024] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0025] Reference Figure 1-5 The utility model embodiment is a cylinder balancing valve for a high-pressure oil cylinder, which includes: a balancing pipe 3, which is used to form an integral part of the balancing valve with a balancing valve body 8. The balancing valve body 8 is arranged inside the balancing pipe 3 to balance the pressure on both sides of the high-pressure oil cylinder 1. The outer surface of the balancing valve body 8 is provided with a sealing member 12. A sealing groove is provided inside the sealing member 12. A raised inner ring is provided on the inner side of the sealing groove to close the loop of the sealing ring 2 14, which can prevent oil leakage and isolate external dust from entering the groove 2. The sealing ring 2 14 is attached to the inside of the sealing groove to enhance the sealing effect. A groove 1 is provided on the side of the sealing ring 2 14. The width and depth of groove one are consistent with the width and depth of the inner ring, so that the groove one of the sealing ring 14 fits with the inner ring, and a sealing member 13 is provided at the end of the balancing valve body 8 away from the sealing member 12, which is used to achieve a secondary sealing effect. A plurality of grooves 2 are symmetrically provided on the surface of the sealing member 13, and the central grooves of a plurality of grooves 2 are set as shallow grooves, and the two sides of a plurality of grooves 2 are set as deep grooves, which are used to achieve a secondary closed loop effect. A sealing ring 11 is fitted inside the groove two of the sealing member 13, and a pressure sensor 4 is fixedly connected to the upper surface of the balancing pipe 3 so that the sealing ring 11 fits with the groove two, which is used to automatically sense the pressure in the high-pressure cylinder 1 and adjust the pressure.

[0026] The balancing valve body 8 is mainly composed of an adjusting rod 9, a spring, a valve core 10, and a valve seat, and is used to balance the pressure on both sides of the high-pressure oil cylinder 1, thereby achieving the balance of the oil cylinder. An oil inlet hole is provided on the front surface of the balancing pipe 3, and the interior of the oil inlet hole is connected to the control valve inside the balancing valve body 8, which is used to connect with the high-pressure oil cylinder 1 and form an oil inlet channel. A display panel 5 is fixedly connected to the upper surface of the balancing pipe 3. The display panel 5 and the pressure sensor 4 are at the same horizontal plane, and are used to display the pressure value detected inside the high-pressure oil cylinder 1. The end of the adjusting rod 9 away from the sealing member 12 is fixedly connected to the spring, and the adjusting rod 9 and the balancing pipe 3 are set to be rotatably connected, which is used to start To adjust the valve core 10, the end of the adjusting rod 9 away from the spring is fixedly connected to the support frame 7, and the middle of the support frame 7 is fixedly connected to the micro motor 6 through an axis rod, which is used to support and fix the micro motor 6 and provide power for the rotation of the adjusting rod 9. The bottom surface of the balancing tube 3 is fixedly connected to the support seat 2, and the upper surface of the support seat 2 is provided with a support groove 21. The balancing tube 3 is located inside the support groove 21, which is used to maintain the stability of the balancing tube 3. The bottom surface of the support seat 2 is fixedly connected to the high-pressure cylinder 1, and the high-pressure cylinder 1 is connected to the balancing valve body 8 through a hydraulic pipeline, which is used for the balancing valve body 8 to maintain the balance of the high-pressure cylinder 1.

[0027] Working principle: When using the cylinder balancing valve for the high-pressure oil cylinder, the high-pressure oil cylinder 1 is connected to the balancing valve body 8 through a hydraulic pipeline. When the pressure on both sides of the oil cylinder is unbalanced, the balancing valve body 8 will sense the pressure difference through the pressure sensor 4 and transmit it to the display panel 5 and the micro motor 6. The micro motor 6 is used to make the adjusting rod 9 adjust the position of the valve core. When the pressure on one side of the high-pressure oil cylinder 1 is higher, the balancing valve body 8 will open to allow the high-pressure oil to flow into the low-pressure side, thereby balancing the pressure on both sides. When the pressure on both sides of the high-pressure oil cylinder 1 is balanced, the balancing valve body 8 will close and stop the liquid flow to maintain the balanced state of the high-pressure oil cylinder 1. The combination of seal 12, sealing ring 2 14 and seal 2 13, sealing ring 11 can not only play a sealing role, but also have the effect of secondary sealing and preventing liquid and oil from overflowing.

[0028] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A cylinder balancing valve for a high-pressure cylinder, characterized in that: include: A balancing pipe (3), wherein a balancing valve body (8) is arranged inside the balancing pipe (3), a sealing member 1 (12) is arranged on the outer surface of the balancing valve body (8), a sealing groove is arranged inside the sealing member 1 (12), a raised inner ring is arranged on the inner side surface of the sealing groove, a sealing ring 2 (14) is fitted inside the sealing groove, a groove 1 is arranged on the side surface of the sealing ring 2 (14), the width and depth of the groove 1 are consistent with the width and depth of the inner ring, a sealing member 2 (13) is arranged at one end of the balancing valve body (8) away from the sealing member 1 (12), a plurality of grooves 2 are symmetrically arranged on the surface of the sealing member 2 (13), a plurality of central grooves of the grooves 2 are set as shallow grooves, and a plurality of sides of the grooves 2 are set as deep grooves, a sealing ring 1 (11) is fitted inside the groove 2 of the sealing member 2 (13), and a pressure sensor (4) is fixedly connected to the upper surface of the balancing pipe (3).

2. The cylinder balancing valve for a high-pressure cylinder according to claim 1, characterized in that: The balancing valve body (8) is mainly composed of an adjusting rod (9), a spring, a valve core (10), and a valve seat.

3. The cylinder balancing valve for a high-pressure cylinder according to claim 1, characterized in that: The front surface of the balancing pipe (3) is provided with an oil inlet hole, and the interior of the oil inlet hole is connected to the control valve inside the balancing valve body (8).

4. The cylinder balancing valve for a high-pressure cylinder according to claim 1, characterized in that: A display panel (5) is fixedly connected to the upper surface of the balance pipe (3), and the display panel (5) and the pressure sensor (4) are located at the same horizontal plane.

5. The cylinder balancing valve for a high-pressure cylinder according to claim 2, characterized in that: One end of the regulating rod (9) away from the sealing member (12) is fixedly connected to the spring, and the regulating rod (9) and the balance pipe (3) are arranged to be rotatably connected.

6. The cylinder balancing valve for a high-pressure cylinder according to claim 2, characterized in that: One end of the adjusting rod (9) away from the spring is fixedly connected to a support frame (7), and the middle of the support frame (7) is fixedly connected to a micro motor (6) via a shaft.

7. The cylinder balancing valve for a high-pressure cylinder according to claim 1, characterized in that: The bottom surface of the balancing pipe (3) is fixedly connected to a support seat (2), the upper surface of the support seat (2) is provided with a support groove (21), and the balancing pipe (3) is located inside the support groove (21).

8. The cylinder balancing valve for a high-pressure cylinder according to claim 7, characterized in that: A high-pressure oil cylinder (1) is fixedly connected to the bottom surface of the support seat (2), and the high-pressure oil cylinder (1) is connected to the balance valve body (8) via a hydraulic pipeline.

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