Pressure stabilizing device of high-flow hydraulic system

Abstract

The utility model relates to the technical field of pressure stabilizing devices, in particular to a high-flow hydraulic system pressure stabilizing device which comprises an installation box body, a first pressure reducing valve is installed in the installation box body, the two ends of the first pressure reducing valve are connected with an oil inlet pipe and an oil outlet pipe correspondingly, and pressure gauges are installed on the oil inlet pipe and the oil outlet pipe correspondingly; the oil return pipe is connected with a hydraulic station oil return tank and provided with an electromagnetic valve, and a control module is installed in the installation box and electrically connected with the pressure gauge, the booster pump and the electromagnetic valve. The booster pump and the oil return pipe are installed at the oil inlet end of the first pressure reducing valve, pressure is supplemented through the booster pump when the pressure gauge detects that the pressure is insufficient, pressure is relieved through the oil return pipe when the pressure gauge detects that the pressure is excessive, and the first pressure reducing valve is kept in a stable pressure environment all the time.

Description

Technical Field

[0001] The present application relates to the technical field of pressure stabilizing devices, and in particular to a pressure stabilizing device for a large flow hydraulic system. Background Art

[0002] A hydraulic system is a system that uses oil as a working medium, utilizes the pressure energy of the oil, and drives the hydraulic actuators through control valves and other components. In some working environments where the actuators need to output constant force, the hydraulic system is required to provide stable pressure.

[0003] At present, the pressure is mainly stabilized by installing a pressure reducing valve in the pipeline, but the pressure reducing valve has a limited adjustment range. When the pressure is too small or too large, the valve may be closed, causing the actuator to lose pressure. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present application is to provide a pressure stabilizing device for a large flow hydraulic system that maintains a stable pressure.

[0005] The above application objectives of this application are achieved through the following technical solutions:

[0006] A pressure stabilizing device for a large flow hydraulic system, characterized by comprising:

[0007] Install the box;

[0008] A first pressure reducing valve, the first pressure reducing valve is installed in the installation box, and two ends of the first pressure reducing valve are respectively connected to an oil inlet pipe and an oil outlet pipe;

[0009] A pressure gauge, both the oil inlet pipe and the oil outlet pipe are equipped with the pressure gauge;

[0010] A boost pump, the boost pump is installed on the oil inlet pipe;

[0011] An oil return pipe, the input end of which is installed on the oil inlet pipe, and the output end is connected to the oil return tank of the hydraulic station, and the oil return pipe is installed with a solenoid valve;

[0012] A control module is electrically connected to the pressure gauge, the boost pump and the solenoid valve.

[0013] Optionally, the first pressure reducing valve includes a pressure regulating spring, the pressure regulating spring is equipped with a force sensor, and the force sensor is electrically connected to the control module.

[0014] Optionally, the oil return pipe is installed with a second pressure reducing valve, the pressure regulating spring of the second pressure reducing valve is connected to a pressure regulating driving member, and the pressure regulating driving member is electrically connected to the control module.

[0015] Optionally, the voltage regulating drive component is an electric push rod.

[0016] Optionally, the first pressure reducing valve is also equipped with the pressure regulating drive component.

[0017] Optionally, the voltage regulating drive component is a ball screw mechanism.

[0018] Optionally, the installation box is hingedly connected to a box cover.

[0019] Optionally, the oil inlet pipe, the oil outlet pipe and the oil return pipe are movably connected to the installation box.

[0020] In summary, the present application includes at least one of the following beneficial technical effects:

[0021] A booster pump and an oil return pipe are installed at the oil inlet end of the first pressure reducing valve. When the pressure gauge detects insufficient pressure, the booster pump is used to supplement the pressure. When the pressure gauge detects excessive pressure, the oil return pipe is used to relieve the pressure, so that the first pressure reducing valve is always maintained in a stable pressure environment.

[0022] By setting a force sensor, it is convenient to feed back the pressure of the pressure regulating spring to the control module through the force sensor, and then judge the opening and closing conditions of the hydraulic pressure and the valve movable parts, so as to make more precise adjustments;

[0023] By setting up the second pressure reducing valve, it is convenient to control the pressure relief pressure of the oil return pipe and reduce the pressure instability caused by pressure relief. At the same time, a pressure regulating drive is set to adjust the pressure relief pressure of the second pressure reducing valve according to the feedback from the pressure gauge, so as to facilitate more precise adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0025] Figure 2 It is a schematic structural diagram of the first pressure reducing valve of an embodiment of the present application.

[0026] Reference numerals: 1, installation box; 11, oil inlet pipe; 12, oil outlet pipe;

[0027] 2. First pressure reducing valve; 21. Pressure regulating spring; 22. Force sensor;

[0028] 3. Pressure gauge;

[0029] 4. Booster pump;

[0030] 5. Oil return pipe; 51. Solenoid valve; 52. Second pressure reducing valve; 521. Pressure regulating drive member;

[0031] 6. Control module. DETAILED DESCRIPTION

[0032] The present application is further described in detail below in conjunction with the accompanying drawings.

[0033] See also Figure 1 , is a large-flow hydraulic system pressure stabilization device disclosed in an embodiment of the present application, including an installation box 1, a first pressure reducing valve 2 is installed in the installation box 1, both ends of the first pressure reducing valve 2 are respectively connected to an oil inlet pipe 11 and an oil outlet pipe 12, the oil inlet pipe 11 and the oil outlet pipe 12 are both installed with a pressure gauge 3, the oil inlet pipe 11 is installed with a booster pump 4 and an oil return pipe 5, the oil return pipe 5 is connected to the hydraulic station return tank, the oil return pipe 5 is installed with a solenoid valve 51, and a control module 6 is installed in the installation box 1, and the control module 6 is electrically connected to the pressure gauge 3, the booster pump 4 and the solenoid valve 51.

[0034] Specifically, a booster pump 4 and an oil return pipe 5 are installed at the oil inlet end of the first pressure reducing valve 2. When the pressure gauge 3 detects insufficient pressure, the booster pump 4 is used to supplement the pressure. When the pressure gauge 3 detects excessive pressure, the pressure is relieved through the oil return pipe 5, so that the first pressure reducing valve 2 is always maintained in a stable pressure environment.

[0035] In some feasible embodiments, the installation box 1 is a rectangular box. For the convenience of protection and maintenance, the installation box 1 is hingedly connected with a box cover. The first pressure reducing valve 2 is an adjustable pressure reducing valve. The control module 6 can be selected as a single-chip computer module. By receiving the feedback signal of the pressure gauge 3, the condition of the first pressure reducing valve 2 is judged. When the pressure is low or high and may cause or has caused the first pressure reducing valve 2 to be closed, temporary adjustment is performed by timely opening the boost pump 4 or the solenoid valve 51.

[0036] As a specific implementation of a large flow hydraulic system pressure stabilization device provided in the application, please refer to Figure 2 The first pressure reducing valve 2 includes a pressure regulating spring 21 , a force sensor 22 is installed on the pressure regulating spring 21 , and the force sensor 22 is electrically connected to the control module 6 .

[0037] In general, by providing the force sensor 22 , it is convenient to feed back the pressure of the pressure regulating spring 21 to the control module 6 through the force sensor 22 , and then judge the opening and closing conditions of the hydraulic pressure and the valve movable part, so as to facilitate more precise adjustment.

[0038] As another specific implementation of a large-flow hydraulic system pressure stabilization device provided in the application, the return oil pipe 5 is installed with a second pressure reducing valve 52, the pressure regulating spring 21 of the second pressure reducing valve 52 is connected to a pressure regulating drive 521, and the pressure regulating drive 521 is electrically connected to the control module 6.

[0039] In combination with specific usage scenarios, a second pressure reducing valve 52 is provided to facilitate control of the pressure relief pressure of the oil return pipe 5 and reduce pressure instability caused by pressure relief. At the same time, a pressure regulating drive 521 is provided to adjust the pressure relief pressure of the second pressure reducing valve 52 according to feedback from the pressure gauge 3, so as to facilitate more precise adjustment.

[0040] In some feasible embodiments, the voltage regulating driving member 521 is an electric push rod.

[0041] Furthermore, the first pressure reducing valve 2 is also equipped with a pressure regulating driving member 521 .

[0042] It should be understood that the pressure regulating driving member 521 is installed on the first pressure reducing valve 2, and the pressure of the first pressure reducing valve 2 is controlled by the pressure regulating driving member 521, thereby improving the degree of automation.

[0043] In some feasible embodiments, the voltage regulating driving member 521 is a ball screw mechanism. Figure 2 The pressure regulating drive component 521 includes a driving motor, the driving motor is connected to a screw rod, the screw rod is threadedly connected to a sleeve, the sleeve can be slidably installed on the first pressure reducing valve 2, to prevent the sleeve from rotating, sliding grooves are provided on both sides of the sleeve, an annular plate is provided at the upper end of the first pressure reducing valve 2, a rectangular block is provided on the inner side of the annular plate, the rectangular block can be slidably installed in the sliding groove, and the sleeve is fixedly connected to the pressure regulating spring 21.

[0044] The first pressure reducing valve 2 is used to maintain the system pressure stable, and the self-locking of the ball screw mechanism facilitates the first pressure reducing valve 2 to be fixed in the position after being adjusted into place.

[0045] As a specific implementation of a large-flow hydraulic system pressure stabilization device provided in the application, the oil inlet pipe 11, the oil outlet pipe 12 and the oil return pipe 5 are movably connected to the installation box 1.

[0046] It should be understood that by providing a movable connection, there is a certain amount of movable space, which facilitates the disassembly, maintenance and replacement of related components.

[0047] In some feasible embodiments, the components are connected by flanges, and the oil inlet pipe 11, the oil outlet pipe 12, the oil return pipe 5 and other pipes are detachably installed on the installation box 1 through pipe clamps. By loosening some bolts, the pipes can be moved axially in the pipe clamps, which facilitates the disassembly and tightening of the flange connection.

[0048] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pressure stabilizing device for a large flow hydraulic system, characterized in that: include: Install the box (1); A first pressure reducing valve (2), the first pressure reducing valve (2) being installed in the installation box (1), and two ends of the first pressure reducing valve (2) being respectively connected to an oil inlet pipe (11) and an oil outlet pipe (12); A pressure gauge (3), the oil inlet pipe (11) and the oil outlet pipe (12) both being equipped with the pressure gauge (3); A boost pump (4), the boost pump (4) being mounted on the oil inlet pipe (11); An oil return pipe (5), wherein the input end of the oil return pipe (5) is mounted on the oil inlet pipe (11), and the output end is connected to the oil return tank of the hydraulic station, and the oil return pipe (5) is installed with a solenoid valve (51); A control module (6), wherein the control module (6) is electrically connected to the pressure gauge (3), the booster pump (4) and the solenoid valve (51).

2. A high flow hydraulic system pressure stabilizing device according to claim 1, characterized in that: The first pressure reducing valve (2) comprises a pressure regulating spring (21), the pressure regulating spring (21) being provided with a force sensor (22), the force sensor being electrically connected to the control module (6).

3. The high flow hydraulic system pressure stabilizing device according to claim 1, characterized in that: The oil return pipe (5) is installed with a second pressure reducing valve (52); the pressure regulating spring (21) of the second pressure reducing valve (52) is connected to a pressure regulating driving component (521); and the pressure regulating driving component (521) is electrically connected to the control module (6).

4. A high flow hydraulic system pressure stabilizing device according to claim 3, characterized in that: The voltage regulating driving component (521) is an electric push rod.

5. The high flow hydraulic system pressure stabilizing device according to claim 3, characterized in that: The first pressure reducing valve (2) is also equipped with the pressure regulating drive component (521).

6. A high flow hydraulic system pressure stabilizing device according to claim 5, characterized in that: The voltage regulating driving component (521) is a ball screw mechanism.

7. The high flow hydraulic system pressure stabilizing device according to claim 1, characterized in that: The installation box body (1) is hingedly connected to a box cover.

8. The high-flow hydraulic system pressure stabilization device according to claim 1, characterized in that: The oil inlet pipe (11), the oil outlet pipe (12) and the oil return pipe (5) are movably connected to the installation box (1).

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