Pressure compensation device

Abstract

The invention relates to the technical field of pressure regulation and discloses a pressure compensation device which comprises an oil tank, an oil supply pump and a rotary motor, the oil tank is provided with a first oil outlet pipe and a first oil inlet pipe, the first oil outlet pipe is connected with the oil supply pump, the rotary motor is provided with a second oil inlet pipe and a second oil outlet pipe, and the oil supply pump is connected with the second oil inlet pipe through the oil supply pipe. The oil supply pipe is connected with the second oil inlet pipe through the main oil supply unit, and the second oil outlet pipe is connected with the second oil inlet pipe through the main oil supply unit; according to the device, when the switch is turned on, the main oil supply unit serves as a rotating loop of the rotating motor and provides high-pressure and high-flow-speed oil liquid for the rotating motor, and the rotating motor drives the spray head component to rotate and work; when the switch is turned off, the auxiliary oil supply unit serves as an idling loop of the rotary motor to provide low-pressure and low-flow-speed oil liquid for the rotary motor, the rotary motor and the spray head component which rotate at high speed due to inertia are helped to slow speed reduction, and therefore the structure of the rotary motor and the structure of the spray head component are protected.

Description

Technical Field

[0001] The invention relates to a pressure regulating device, in particular to a pressure compensating device. Background Art

[0002] High-pressure rotary cleaning equipment usually includes a nozzle component and a rotating component. The nozzle component sprays high-pressure water outward to clean the object, and the rotating component drives the nozzle component to rotate, thereby expanding the cleaning area and improving the cleaning efficiency. The rotating component can use an oil circuit system in conjunction with a rotary motor. When in use, the switch is turned on, and the oil circuit system supplies oil to the nozzle rotary motor to drive the rotary motor to rotate. The switch is turned off when intermittent or not in use. However, in the initial stage of power failure when the switch of the existing rotating component is turned off, the rotary motor still rotates due to inertia. The excessive inertial force can easily damage the rotary motor. Therefore, a device is needed to compensate the pressure of the rotary motor in the initial stage of power failure. Summary of the invention

[0003] In view of this, the present invention provides a pressure compensation device that can provide low-pressure and low-flow oil to the rotating motor in the early stage of power failure, helping the rotating motor and nozzle components that rotate at high speed due to inertia to slowly slow down, thereby protecting the structure of the rotating motor and nozzle components.

[0004] The technical solution of the present invention is achieved in this way:

[0005] The present invention provides a pressure compensation device, comprising an oil tank, an oil supply pump and a rotary motor, wherein the oil tank is provided with an oil outlet pipe 1 and an oil inlet pipe 1, wherein the oil outlet pipe 1 is connected to the oil supply pump, and the rotary motor is provided with an oil inlet pipe 2 and an oil outlet pipe 2, wherein the oil supply pump is connected to the oil inlet pipe 2 through the oil supply pipe, and the oil outlet pipe 2 is connected to the oil inlet pipe 1, and further comprising:

[0006] A main oil supply unit, the oil supply pipe is connected to the second oil inlet pipe through the main oil supply unit, and the main oil supply unit supplies oil to the rotary motor under working conditions;

[0007] Auxiliary oil supply unit, the oil supply pipe is connected with the second oil inlet pipe through the auxiliary oil supply unit, and the auxiliary oil supply unit supplies oil to the rotating motor when the work is suspended.

[0008] Preferably, the main oil supply unit includes a main oil circuit, a one-way throttle valve and a reversing valve, the oil inlet pipe 2 is connected to the oil supply pipe through the main oil circuit, the one-way throttle valve and the reversing valve are both installed on the main oil circuit, and the reversing valve is located downstream of the one-way throttle valve.

[0009] Preferably, the auxiliary oil supply unit includes an auxiliary oil circuit, a pressure reducing valve and a speed regulating valve, the oil inlet pipe 2 is connected to the oil supply pipe through the auxiliary oil circuit, the pressure reducing valve and the speed regulating valve are both installed on the auxiliary oil circuit, and the speed regulating valve is located downstream of the pressure reducing valve.

[0010] Preferably, the pressure reducing valve is further provided with an oil return pipe, and the oil return pipe is connected to the oil inlet pipe.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] The present invention provides a pressure compensation device. When the switch is turned on, the main oil supply unit serves as a rotating circuit of a rotating motor to provide high-pressure and high-flow rate oil to the rotating motor, and the rotating motor drives the nozzle component to rotate. When the switch is turned off, the auxiliary oil supply unit serves as an idle circuit of the rotating motor to provide low-pressure and low-flow rate oil to the rotating motor, helping the rotating motor and the nozzle component that rotate at high speed due to inertia to slowly slow down, thereby protecting the structure of the rotating motor and the nozzle component. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 It is a schematic diagram of the connection structure of the present invention;

[0015] Figure 2 It is a schematic diagram of the rotary circuit connection structure of the present invention;

[0016] Figure 3 It is a schematic diagram of the idle circuit connection structure of the present invention.

[0017] In the figure, 1, oil tank; 11, oil outlet pipe 1; 12, oil inlet pipe 1; 2, oil supply pump; 21, oil supply pipe; 3, rotary motor; 31, oil inlet pipe 2; 32, oil outlet pipe 2; 4, main oil supply unit; 41, main oil circuit; 42, one-way throttle valve; 43, reversing valve; 5, auxiliary oil supply unit; 51, auxiliary oil circuit; 52, pressure reducing valve; 53, speed regulating valve; 521, oil return pipe. DETAILED DESCRIPTION

[0018] In order to better understand the technical content of the present invention, specific embodiments are provided below, and the present invention is further described in conjunction with the accompanying drawings.

[0019] See also Figures 1 to 3The present invention provides a pressure compensation device, including an oil tank 1, an oil supply pump 2 and a rotary motor 3, wherein the oil tank 1 is provided with an oil outlet pipe 11 and an oil inlet pipe 12, wherein the oil outlet pipe 11 is connected to the oil supply pump 2, and the rotary motor 3 is provided with an oil inlet pipe 2 31 and an oil outlet pipe 2 32, wherein the oil supply pump 2 is connected to the oil inlet pipe 2 31 through the oil supply pipe 21, and the oil outlet pipe 2 32 is connected to the oil inlet pipe 1 12, and further comprising:

[0020] The main oil supply unit 4, the oil supply pipe 21 is connected to the oil inlet pipe 2 31 through the main oil supply unit 4, and the main oil supply unit 4 supplies oil to the rotary motor 3 under working conditions; when the switch is turned on, the main oil supply unit 4 serves as a rotary circuit of the rotary motor 3, providing the rotary motor 3 with high-pressure and high-flow rate oil, and the rotary motor 3 drives the nozzle component to rotate, wherein the nozzle component and the rotary motor 3 are connected by a shaft.

[0021] Auxiliary oil supply unit 5, the oil supply pipe 21 is connected to the oil inlet pipe 2 31 through the auxiliary oil supply unit 5, and the auxiliary oil supply unit 5 supplies oil to the rotating motor 3 when the work is suspended; when the switch is turned off, the auxiliary oil supply unit 5 serves as an idle circuit of the rotating motor 3, providing low-pressure and low-flow rate oil to the rotating motor 3, helping the rotating motor 3 and the nozzle components that rotate at high speed due to inertia to slowly slow down, thereby protecting the structure of the rotating motor 3 and the nozzle components.

[0022] The main oil supply unit 4 includes a main oil circuit 41, a one-way throttle valve 42 and a reversing valve 43. The reversing valve 43 uses a two-position four-way electromagnetic reversing valve 43 as a working switch of the rotary motor 3. When working, the reversing valve 43 is opened; when pausing or stopping working, the reversing valve 43 is closed. The oil inlet pipe 231 is connected to the oil supply pipe 21 through the main oil circuit 41. The one-way throttle valve 42 and the reversing valve 43 are both installed on the main oil circuit 41, and the reversing valve 43 is located downstream of the one-way throttle valve 42.

[0023] The auxiliary oil supply unit 5 includes an auxiliary oil circuit 51, a pressure reducing valve 52 and a speed regulating valve 53. The oil inlet pipe 231 is connected to the oil supply pipe 21 through the auxiliary oil circuit 51. The pressure reducing valve 52 and the speed regulating valve 53 are both installed on the auxiliary oil circuit 51. The speed regulating valve 53 is located downstream of the pressure reducing valve 52.

[0024] When rotary cleaning is required, the reversing valve 43 is opened, the oil supply pump 2 sucks oil from the oil tank 1, goes through the main oil path 41, passes through the one-way throttle valve 42 and the reversing valve 43 in sequence, and finally provides high-pressure and high-flow rate oil to the rotary motor 3, and the rotary motor 3 drives the nozzle component to rotate;

[0025] When cleaning is paused or stopped, the reversing valve 43 is closed, and the oil supply pump 2 draws oil from the oil tank 1, goes through the auxiliary oil circuit 51, and passes through the pressure reducing valve 52 and the speed regulating valve 53 in sequence to provide low-pressure and low-flow rate oil to the rotary motor 3, so as to help the rotary motor 3 and the nozzle components that rotate at high speed due to inertia to slowly slow down, thereby protecting the structure of the rotary motor 3 and the nozzle components.

[0026] The pressure reducing valve 52 is further provided with an oil return pipe 521 , and the oil return pipe 521 is connected to the oil inlet pipe 12 , and the oil leaked from the pressure reducing valve 52 can flow back to the oil tank 1 through the oil return pipe 521 .

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pressure compensation device, comprising an oil tank (1), an oil supply pump (2) and a rotary motor (3), wherein the oil tank (1) is provided with an oil outlet pipe (11) and an oil inlet pipe (12), wherein the oil outlet pipe (11) is connected to the oil supply pump (2), and the rotary motor (3) is provided with an oil inlet pipe (31) and an oil outlet pipe (32), wherein the oil supply pump (2) is connected to the oil inlet pipe (31) through an oil supply pipe (21), and the oil outlet pipe (32) is connected to the oil inlet pipe (12), characterized in that: Also includes: A main oil supply unit (4), wherein the oil supply pipe (21) is connected to the second oil inlet pipe (31) through the main oil supply unit (4), and when in operation, the main oil supply unit (4) supplies oil to the rotary motor (3); Auxiliary oil supply unit (5), the oil supply pipe (21) is connected to the second oil inlet pipe (31) through the auxiliary oil supply unit (5), and the auxiliary oil supply unit (5) supplies oil to the rotating motor (3) when the operation is suspended.

2. A pressure compensation device according to claim 1, characterized in that: The main oil supply unit (4) comprises a main oil circuit (41), a one-way throttle valve (42) and a reversing valve (43); the second oil inlet pipe (31) is connected to the oil supply pipe (21) via the main oil circuit (41); the one-way throttle valve (42) and the reversing valve (43) are both installed on the main oil circuit (41); and the reversing valve (43) is located downstream of the one-way throttle valve (42).

3. A pressure compensation device according to claim 2, characterized in that: The auxiliary oil supply unit (5) comprises an auxiliary oil circuit (51), a pressure reducing valve (52) and a speed regulating valve (53); the second oil inlet pipe (31) is connected to the oil supply pipe (21) via the auxiliary oil circuit (51); the pressure reducing valve (52) and the speed regulating valve (53) are both installed on the auxiliary oil circuit (51); and the speed regulating valve (53) is located downstream of the pressure reducing valve (52).

4. A pressure compensation device according to claim 3, characterized in that: The pressure reducing valve (52) is also provided with an oil return pipe (521), and the oil return pipe (521) is connected to the oil inlet pipe 1 (12).

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