Electric overflow valve

Abstract

The utility model provides an electric overflow valve which comprises a valve body assembly, an energy accumulator and a pressure regulating assembly, a valve cavity allowing a valve element to reciprocate is formed in the valve body assembly, a liquid inlet and a liquid return opening are formed in the valve cavity, the valve element divides the valve cavity into a first cavity body and a second cavity body, and the valve element reciprocates to achieve different opening degrees; an energy storage cavity is formed in the energy accumulator, and the energy storage cavity is in fluid communication with the first cavity; the pressure regulating assembly comprises a driving part, a control part and a pressure regulating part, the driving part is connected with the pressure regulating part, the control part is in signal connection with the driving part, at least one part of the pressure regulating part is in threaded connection with the valve body assembly, and one end of the pressure regulating part communicates with the first cavity and is used for changing the pressure in the first cavity; therefore, the driving part is controlled to drive the pressure regulating part to rotate, accurate pressure control is achieved, and remote programmed pressure regulation of the overflow valve is completed.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic component technology, and more specifically, to an electric relief valve. Background Technology

[0002] An overflow valve is a pressure regulating device in a hydraulic system, widely used in spray pump stations. The pressure of the high-pressure water required for dust suppression spraying on the working face is regulated by the overflow valve.

[0003] The pressure regulation method of the overflow valve in the existing technology is manual adjustment, thereby controlling the system pressure. However, this method is inconvenient to operate, the set pressure is unstable, and remote adjustment cannot be achieved, which does not meet the requirements of intelligent mining development in coal mines. Utility Model Content

[0004] The main purpose of this utility model is to provide an electric relief valve to solve the technical problem that existing manual relief valves cannot achieve precise adjustment and remote control, thus increasing the burden on workers.

[0005] To achieve the above objectives, this utility model provides an electric relief valve, comprising:

[0006] A valve body assembly has a valve cavity for reciprocating movement of a valve core. The valve cavity is provided with an inlet and an outlet. The valve core divides the valve cavity into a first chamber and a second chamber. The reciprocating movement of the valve core achieves different opening degrees.

[0007] An energy storage device having an energy storage chamber inside, the energy storage chamber being in fluid communication with the first chamber;

[0008] A pressure regulating assembly includes a driving unit, a control unit, and a pressure regulating unit. The driving unit is connected to the pressure regulating unit, and the control unit is signal-connected to the driving unit and can control the driving unit to drive the pressure regulating unit to move. At least a portion of the pressure regulating unit is sealed to the valve body assembly, and one end of the pressure regulating unit is connected to the first chamber for changing the pressure inside the first chamber.

[0009] Furthermore, the valve body assembly includes: a body, wherein the valve core is located within the body and is capable of reciprocating within the body, and an inlet channel and a return channel are formed within the body respectively communicating with the inlet port and the return port; and a pilot valve, wherein the pilot valve is located on one side of the body, and an end of the pilot valve is formed with a mounting portion for mounting a pressure regulating part, and the mounting portion is in fluid communication with the first chamber.

[0010] Furthermore, a groove is formed at one end of the valve core near the first chamber, and a spring is provided between the valve core and the pilot valve. One end of the spring abuts in the groove, and the other end of the spring abuts in the pilot valve.

[0011] Furthermore, a pressure regulating chamber is formed on the pilot valve, which constitutes part of the first chamber. The pressure regulating chamber is connected to the accumulator. The pressure regulating part includes a first pressure regulating plug and a second pressure regulating plug. The mounting part includes a first mounting part and a second mounting part. The first mounting part is connected to the pressure regulating chamber through a first pipeline, and the second mounting part is connected to the pressure regulating chamber through a second pipeline. The pressure regulating part includes a first pressure regulating plug and a second pressure regulating plug. The driving part includes a first driving member and a second driving member. The first driving member is connected to the first pressure regulating plug and controls the rotation of the first pressure regulating plug to connect or disconnect the first pipeline from the pressure regulating chamber. The second driving member is connected to the second pressure regulating plug and controls the rotation of the second pressure regulating plug to connect or disconnect the second pipeline from the pressure regulating chamber.

[0012] Furthermore, the pressure regulating unit is also connected to the liquid inlet and the liquid return port. The first mounting part is connected to the liquid inlet channel through a third pipeline, and the connection or disconnection between the third pipeline and the first pipeline can be achieved by controlling the first pressure regulating plug. The second mounting part is connected to the liquid return channel through a fourth pipeline, and the connection or disconnection between the second pipeline and the fourth pipeline can be achieved by controlling the second pressure regulating plug.

[0013] Furthermore, a pressure regulating chamber is formed on the pilot valve, which constitutes part of the first chamber. The pressure regulating chamber is connected to the accumulator. The mounting part includes a first mounting part and a second mounting part. The first mounting part is connected to the pressure regulating chamber through a first pipeline, and the second mounting part is connected to the pressure regulating chamber through a second pipeline. The pressure regulating part includes a first pressure regulating push rod and a second pressure regulating push rod. The motor includes a first driving member and a second driving member. The first driving member is connected to the first pressure regulating push rod and controls the reciprocating movement of the first pressure regulating push rod to connect or disconnect the first pipeline from the pressure regulating chamber. The second driving member is connected to the second pressure regulating push rod and controls the reciprocating movement of the second pressure regulating push rod to connect or disconnect the second pipeline from the pressure regulating chamber.

[0014] Furthermore, the mounting part is threadedly connected to the pressure regulating part via a wire thread sleeve.

[0015] Furthermore, the valve body assembly also includes a valve seat detachably connected to the main body, the valve seat being located inside the main body, one end of the valve seat abutting against the inner side of the main body, the valve cavity being formed within the valve seat, and the valve seat having an abutting slope that abuts against the valve core.

[0016] Furthermore, a first sealing portion is provided between the valve seat and the body, and a second sealing portion is provided between the valve seat and the body.

[0017] The electric relief valve provided by this utility model connects the driving part and the pressure regulating part, and the control part is connected to the driving part by signal. It can control the driving part to drive the pressure regulating part to rotate. At least a part of the pressure regulating part is threadedly connected to the valve body assembly. One end of the pressure regulating part is connected to the first chamber to change the pressure inside the first chamber. Thus, the driving part is controlled to drive the pressure regulating part to rotate, so as to achieve precise pressure control and complete the remote programmed adjustment of the relief valve pressure. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0019] Figure 1 A schematic diagram of the structure of the electric relief valve according to the present invention is shown.

[0020] The above figures include the following reference numerals:

[0021] 10. Valve body assembly; 11. Body; 12. Pilot valve; 121. Pressure regulating chamber; 20. Accumulator; 30. Pressure regulating assembly; 31. Drive unit; 32. Control unit; 33. Pressure regulating unit. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0024] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0025] To address the technical problem that existing manually adjustable overflow valves cannot achieve precise adjustment and remote control, thus increasing the burden on workers, this utility model provides an electric overflow valve.

[0026] Figure 1 A schematic diagram of the structure of the electric relief valve provided by this utility model is shown, as follows: Figure 1 As shown, the electric relief valve includes a valve body assembly 10, an accumulator 20, and a pressure regulating assembly 30.

[0027] The valve body assembly 10 has a valve chamber for the reciprocating movement of the valve core. The valve chamber is provided with an inlet and an outlet. The valve core divides the valve chamber into a first chamber and a second chamber. The valve core reciprocates within the valve chamber to achieve different opening degrees and thus different pressures. The accumulator 20 has an energy storage chamber inside. The energy storage chamber is in fluid communication with the first chamber, so that the pressure of the first chamber can be controlled by the pressure of the energy storage chamber.

[0028] The pressure regulating assembly 30 includes a drive unit 31, a control unit 32, and a pressure regulating unit 33. The drive unit 31 is connected to the pressure regulating unit 33 and can drive the pressure regulating unit 33 to move. The control unit 32 is signal-connected to the drive unit 31, thereby controlling the drive unit 31 to rotate the pressure regulating unit 33 based on a control signal. At least a portion of the pressure regulating unit 33 is sealed to the valve body assembly 10. One end of the pressure regulating unit 33 communicates with the first chamber for changing the pressure inside the first chamber. The control unit 32 is signal-connected to the drive unit 31 and can drive the pressure regulating unit 33 to maintain the pressure inside the first chamber within a preset range.

[0029] By using the electric overflow valve provided by this utility model, the control unit 32 controls the drive unit 31 to drive the pressure regulating unit 33 to move, thereby changing the pressure inside the first chamber by controlling the pressure regulating unit 33, achieving precise pressure control, and completing the remote programmed adjustment of the overflow valve pressure.

[0030] Meanwhile, a pressure detection unit can also be installed in the inlet pipeline connected to the inlet to detect the pressure at the inlet; preferably, the pressure detection unit can be installed in the inlet pipeline near the inlet to collect the pressure at the inlet for indicating the system pressure. Installing the pressure detection unit at the inlet facilitates the initial assembly and subsequent maintenance of the pressure detection unit.

[0031] The pressure signal detected by the pressure detection unit controls the drive unit and then controls the opening of the pilot valve, forming a closed-loop pressure feedback control with high control accuracy, fast response speed and good stability.

[0032] Furthermore, the valve body assembly 10 includes a body 11 and a pilot valve 12. The valve core is located within the body 11 and is capable of reciprocating within the body 11. The body 11 has an inlet channel and a return channel respectively communicating with the inlet and return port, which are used to communicate with an external pressure source. The pilot valve 12 is located on one side of the body 11 and connected to the body 11. The end of the pilot valve 12 has a mounting portion for mounting the pressure regulating part 33, which is in fluid communication with the first chamber. This arrangement, where the body 11 and pilot valve 12 are processed separately and then assembled, facilitates the maintenance and assembly of the overflow valve and helps reduce product processing costs.

[0033] Specifically, a groove is formed at one end of the valve core near the first chamber, and a spring is provided between the valve core and the pilot valve 12. A receiving part is formed at the bottom of the groove, one end of the spring abuts in the groove, and the other end of the spring abuts in the pilot valve 12. Thus, when the valve core is fully open, the top of the valve core contacts the bottom of the pilot valve, and the valve core is reset by the spring. At the same time, the receiving part formed at the bottom of the groove helps to improve the assembly efficiency of the product.

[0034] In one embodiment of this utility model, a pressure regulating chamber 121 is formed on the pilot valve 12. The pressure regulating chamber 121 constitutes part of the first chamber and is connected to the accumulator 20, thereby enabling the pressure regulating chamber 121 to communicate with the accumulator chamber. Thus, a pressure detection unit can also be disposed within the pressure regulating chamber 121 to detect the pressure within it. The pressure regulating part 33 includes a first pressure regulating plug and a second pressure regulating plug. The mounting part includes a first mounting part and a second mounting part. The first mounting part communicates with the pressure regulating chamber 121 through a first pipe, and the second mounting part communicates with the pressure regulating chamber 121 through a second pipe. The first pressure regulating plug is threadedly connected to the first mounting part, and the second pressure regulating plug is threadedly connected to the second mounting part.

[0035] The driving unit can be, for example, a rotary driving unit, which includes a first driving member and a second driving member. The first driving member is connected to the first pressure regulating plug, and controls the rotation of the first pressure regulating plug to connect or disconnect the first pipeline from the pressure regulating chamber. The second driving member is connected to the second pressure regulating plug, and controls the rotation of the second pressure regulating plug to connect or disconnect the second pipeline from the pressure regulating chamber. Preferably, the first driving member can be a first rotary motor, and the second driving member can be a second rotary motor.

[0036] The first pressure regulating plug is connected to the first driving component, and the second pressure regulating plug is connected to the second driving component. Thus, during the operation of the overflow valve, the first and second pressure regulating plugs can be controlled by controlling the rotation of the first and second driving components. In turn, the opening and closing of the first pipeline can be controlled by controlling the first driving component, and the opening and closing of the second pipeline can be controlled by controlling the second driving component.

[0037] In another embodiment of this utility model, the pressure regulating part 33 may also be a first pressure regulating push rod and a second pressure regulating push rod. The driving part may be, for example, a linear driving part, which includes a third driving member and a fourth driving member. The third driving member is connected to the first pressure regulating push rod and controls the reciprocating movement of the first pressure regulating push rod to connect or disconnect the first pipeline from the pressure regulating chamber. The fourth driving member is connected to the second pressure regulating push rod and controls the reciprocating movement of the second pressure regulating push rod to connect or disconnect the second pipeline from the pressure regulating chamber. Preferably, the third driving member may be a third linear motor, and the fourth driving member may be a fourth linear motor.

[0038] In order to facilitate the adjustment of the pressure in the pressure regulating chamber 121, the pressure regulating part 33 is also connected to the liquid inlet and the liquid return port, thereby providing the pressure regulating chamber 121 with the high pressure source and low pressure source required for pressure regulation.

[0039] Specifically, the first mounting part is connected to the liquid inlet channel via a third pipeline, and the connection or disconnection of the third pipeline and the first pipeline can be achieved by controlling the first pressure regulating screw plug; the second mounting part is connected to the liquid return channel via a fourth pipeline, and the connection or disconnection of the second pipeline and the fourth pipeline can be achieved by controlling the second pressure regulating screw plug. By setting the third and fourth pipelines, the pressure regulating chamber 121 is connected to the high-pressure source of the liquid inlet channel via the first and third pipelines, and connected to the low-pressure source of the liquid return channel via the second and fourth pipelines.

[0040] To improve the product's service life, the mounting part is threaded to the pressure regulating part 33 via a wire thread sleeve. Specifically, the first pressure regulating plug and the second pressure regulating plug are threaded to the first mounting part and the second mounting part, respectively, via wire thread sleeves. Thus, during use, the threads can be replaced by replacing the wire thread sleeves, which helps reduce the product's maintenance costs.

[0041] Furthermore, the pressure detection unit is a pressure sensor, which may be, for example, a piezoelectric pressure sensor, a ceramic pressure sensor, or a strain gauge pressure sensor.

[0042] In another specific embodiment of this utility model, the body 11 includes a valve seat and a bushing located in the valve cavity. One end of the valve seat abuts against the inner side of the valve cavity. The valve seat has an abutting inclined surface that abuts against the valve core. Under the initial working condition, the valve core presses against the valve seat under the elastic force of the spring, and the abutting inclined surface achieves a seal between the liquid inlet channel and the liquid return channel. The bushing is located on the side of the valve cavity near the pilot valve 12. The valve core is located inside the bushing and reciprocates along the inner wall of the bushing, thereby the bushing forms the movement path of the valve core.

[0043] To improve the sealing effect, a first sealing part is provided between the bushing and the body 11, and a second sealing part is provided between the valve seat and the body 11. The first and second sealing parts are sealing rings, preferably rubber sealing rings. This arrangement helps improve the sealing effect inside the relief valve.

[0044] The electric relief valve provided by this utility model uses the control unit 32 to control the drive unit 31 to drive the pressure regulating unit 33 to move. By controlling the pressure regulating unit 33, the pressure inside the first chamber can be changed, achieving precise pressure control and completing remote programmed adjustment of the relief valve pressure. At the same time, the pressure signal detected by the pressure detection unit is used to control the motor and then control the opening of the pilot valve, forming a closed-loop pressure feedback control with high control accuracy, fast response speed and good stability.

[0045] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0046] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0047] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0048] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An electric relief valve, characterized in that, include: Valve body assembly (10), the valve body assembly (10) has a valve cavity for the valve core to reciprocate, the valve cavity is provided with an inlet and an outlet, the valve core divides the valve cavity into a first chamber and a second chamber, the valve core reciprocates to achieve different opening degrees; An energy storage device (20) has an energy storage chamber inside, which is in fluid communication with the first chamber; The pressure regulating assembly (30) includes a drive unit (31), a control unit (32), and a pressure regulating unit (33). The drive unit (31) is connected to the pressure regulating unit (33), and the control unit (32) is signal-connected to the drive unit (31) and can control the drive unit (31) to drive the pressure regulating unit (33) to move. At least a part of the pressure regulating unit (33) is sealed to the valve body assembly (10), and one end of the pressure regulating unit (33) is connected to the first chamber for changing the pressure inside the first chamber.

2. The electric relief valve according to claim 1, characterized in that, The valve body assembly (10) includes: Body (11), the valve core is located inside the body (11) and can reciprocate inside the body (11), and the body (11) has an inlet channel and a return channel respectively connected to the inlet and the return port; A pilot valve (12) is located on one side of the body (11). The end of the pilot valve (12) is formed with a mounting part for mounting a pressure regulating part (33), and the mounting part is in fluid communication with the first chamber.

3. The electric relief valve according to claim 2, characterized in that, A groove is formed at one end of the valve core near the first chamber. A spring is provided between the valve core and the pilot valve (12). One end of the spring abuts in the groove, and the other end of the spring abuts in the pilot valve (12).

4. The electric relief valve according to claim 2, characterized in that, A pressure regulating chamber (121) is formed on the pilot valve (12), the pressure regulating chamber (121) constitutes part of the first chamber, the pressure regulating chamber (121) is connected to the accumulator (20), the pressure regulating part (33) includes a first pressure regulating plug and a second pressure regulating plug, the mounting part includes a first mounting part and a second mounting part, the first mounting part is connected to the pressure regulating chamber (121) through a first pipeline, and the second mounting part is connected to the pressure regulating chamber (121) through a second pipeline; the pressure regulating part (33) includes a first pressure regulating plug and a second pressure regulating plug, the driving part (31) includes a first driving member and a second driving member, the first driving member is connected to the first pressure regulating plug, and the first pipeline is connected to or disconnected from the pressure regulating chamber (121) by controlling the rotation of the first pressure regulating plug, the second driving member is connected to the second pressure regulating plug, and the second pipeline is connected to or disconnected from the pressure regulating chamber by controlling the rotation of the second pressure regulating plug.

5. The electric relief valve according to claim 4, characterized in that, The pressure regulating part (33) is also connected to the liquid inlet and the liquid return port. The first mounting part is connected to the liquid inlet channel through the third pipeline, and can connect or disconnect the third pipeline from the first pipeline by controlling the first pressure regulating screw plug. The second mounting part is connected to the liquid return channel through the fourth pipeline, and can connect or disconnect the second pipeline from the fourth pipeline by controlling the second pressure regulating screw plug.

6. The electric relief valve according to claim 2, characterized in that, A pressure regulating chamber (121) is formed on the pilot valve (12), the pressure regulating chamber (121) constitutes part of the first chamber, the pressure regulating chamber (121) is connected to the accumulator (20), the mounting part includes a first mounting part and a second mounting part, the first mounting part is connected to the pressure regulating chamber (121) through a first pipeline, and the second mounting part is connected to the pressure regulating chamber (121) through a second pipeline.

7. The electric relief valve according to claim 2, characterized in that, The mounting part is threadedly connected to the pressure regulating part (33) via a wire thread sleeve.

8. The electric relief valve according to claim 6, characterized in that, The pressure regulating unit (33) includes a first pressure regulating push rod and a second pressure regulating push rod. The driving unit includes a first driving member and a second driving member. The first driving member is connected to the first pressure regulating push rod and controls the reciprocating movement of the first pressure regulating push rod to connect or disconnect the first pipeline from the pressure regulating chamber (121). The second driving member is connected to the second pressure regulating push rod and controls the reciprocating movement of the second pressure regulating push rod to connect or disconnect the second pipeline from the pressure regulating chamber.

9. The electric relief valve according to claim 2, characterized in that, The valve body assembly further includes a valve seat detachably connected to the main body, the valve seat being located inside the main body, one end of the valve seat abutting against the inner side of the main body, the valve cavity being formed within the valve seat, and the valve seat having an abutting slope that abuts against the valve core.

10. The electric relief valve according to claim 9, characterized in that, The valve seat and the body (11) have a first sealing part, and the valve seat and the body (11) have a second sealing part.

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