CN211059446U

CN211059446U - Integrated quick response valve electro-hydraulic driving device

Info

Publication number: CN211059446U
Application number: CN201921631296.1U
Authority: CN
Inventors: 熊朦; 王超宁; 孙平; 张惺华; 余佳宇; 蒋重霞
Original assignee: Cssc Jiangxi Vaive Compiete Equipment Co ltd
Current assignee: Cssc Jiangxi Vaive Compiete Equipment Co ltd
Priority date: 2019-09-28
Filing date: 2019-09-28
Publication date: 2020-07-21
Anticipated expiration: 2029-09-28

Abstract

The utility model discloses an integrated quick response valve electro-hydraulic driving device, which relates to the valve control field, and comprises an oil tank, a gear pump, a hydraulic driving module, a motor, a hydraulic actuator and a signal feedback switch device; the oil tank is connected with the hydraulic driving module, and the gear pump is arranged in the oil tank and communicated with the hydraulic driving module; the motor is connected with the gear pump; the hydraulic actuator comprises a valve body, a valve cover, a rack, a first oil cavity, a second oil cavity, a first oil way, a second oil way and a driven wheel; the rack is meshed with the driven wheel, and the first oil way and the second oil way are respectively communicated with the hydraulic driving module, the first oil cavity and the second oil cavity; the signal feedback switch device comprises a switch display panel and a cam shaft connected with the switch display panel, and the other end of the cam shaft is connected with a gear shaft of the driven wheel. The utility model has the advantages of high integration level and space saving; the valve can be rapidly controlled to be opened and closed, and the opening and closing conditions of the valve can be displayed.

Description

Integrated quick response valve electro-hydraulic driving device

Technical Field

The utility model relates to a valve control field, concretely relates to integration quick response valve electricity liquid drive arrangement.

Background

The electro-hydraulic control valve is a mechanical structure which controls the opening or closing of the valve by driving a hydraulic transmission mechanism to act through a motor, and is widely applied to automatic control systems for storage and transportation of pipelines such as petroleum, chemical engineering, metallurgy, electric power, food and the like as an automatic control execution mechanism.

The defects of the existing electrohydraulic control valve products on the market are obvious, the whole structure of the electrohydraulic control valve is too overstaffed along with the lifting of the torsion force, the occupied space is large, and the response time is longer. In order to solve the technical problems in the engineering application, a valve driving device which has a compact structure and can respond quickly is urgently needed to be designed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome above prior art's shortcoming: the electro-hydraulic valve driving device is compact in structure and capable of responding quickly.

The technical solution of the utility model is as follows:

an integrated quick response valve electrohydraulic driving device comprises an oil tank, a gear pump, a hydraulic driving module, a motor, a hydraulic actuator and a signal feedback switch device;

the oil tank is connected with the hydraulic driving module, and the gear pump is arranged in the oil tank and communicated with the hydraulic driving module;

a rotating shaft of the motor is connected with a gear shaft of the gear pump;

the hydraulic actuator comprises a valve body and a valve cover, a rack which is connected with the inner wall of the valve body in a sliding mode is arranged in the valve body, a first oil cavity and a second oil cavity are arranged between the valve body and the rack, a first oil way and a second oil way which are communicated with the hydraulic driving module are further arranged in the valve body, and the first oil way and the second oil way are respectively communicated with the first oil cavity and the second oil cavity; a driven wheel meshed with the rack is further arranged in the valve body;

the signal feedback switch device comprises a switch display panel and a cam shaft connected with the switch display panel, and the other end of the cam shaft is connected with a gear shaft of the driven wheel.

Furthermore, the signal feedback switch device also comprises a switch limiting sheet, a cam and an integrated circuit board, wherein the cam is arranged on the cam shaft, and the integrated circuit board is electrically connected with the switch limiting sheet and the cam shaft; when the driven wheel rotates to drive the valve to be opened or closed in place, the cam rotates along with the cam shaft to contact the switch limiting piece, the switch limiting piece is communicated with a circuit formed by the cam, the cam shaft and an integrated circuit board, the integrated circuit board is electrically connected with the motor, and the integrated circuit board controls the motor to start or stop.

Furthermore, the number of the cams is two, the two cams are respectively positioned on two sides of the cam shaft, and the two cams are parallel to each other; the number of the switch limiting pieces is two, and the two switch limiting pieces correspond to the two cam positions respectively.

Further, the hydraulic drive module comprises an oil path A and an oil path B which are respectively communicated with the gear pump, a hydraulic control one-way valve A2 used for controlling hydraulic oil to pass through is arranged on the oil path A, a hydraulic control one-way valve B2 used for controlling hydraulic oil to pass through is arranged on the oil path B, and the oil path A and the oil path B are respectively communicated with the first oil path and the second oil path.

Further, the hydraulic drive module also comprises an overflow valve and a hydraulic lock.

Furthermore, a limiting structure used for limiting the moving distance of the rack is arranged on the valve cover.

Furthermore, the limiting structure comprises a stroke screw and a limiting ball arranged at the tail of the stroke screw, the stroke screw is arranged in the valve cover in a penetrating mode, and the limiting ball is located in the valve body.

Furthermore, an oil observation port and an oil filling port are arranged on the oil tank.

Further, an aviation connector is mounted on the motor.

Furthermore, insulating paint is sprayed on the switch display panel.

The utility model has the advantages that:

1. the utility model discloses an inside structural design of oil tank is arranged in to accurate tiny gear pump, and the integrated level is high, the occupation space of whole mechanism of having saved of very big ground.

2. The utility model discloses a powerful micro motor is as power unit, can be fast, at the uniform velocity the aperture of stable control valve to the velocity of flow and the flow of the medium of valve are flowed through in the control.

3. The integrated quick response valve electrohydraulic driving device of the utility model not only can quickly realize the opening and closing of the valve, but also is provided with the signal feedback switching device, the opening and closing condition of the valve can be displayed through the signal feedback switching device, and the starting and the closing of the motor can be automatically controlled through the signal feedback switching device, namely the opening and the closing of the valve are controlled; the utility model discloses also can rotate miniature gear pump through manual operation and carry out on-off control to controlled valve member, adopt manual and automatic control to combine together, maintain simply.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a partial cross-sectional view of the structure of FIG. 1;

FIG. 3 is a partial cross-sectional top view from the left of FIG. 1;

FIG. 4 is a schematic top view of the structure of FIG. 1;

FIG. 5 is a schematic diagram of a hydraulic drive module;

description of the drawings: 1. an oil tank; 11. an oil observation port; 12. an oil filler; 2. a gear pump; 3. a hydraulic drive module; 31. an overflow valve; 32. hydraulic locking; 4. a motor; 41. an aircraft joint; 5. a hydraulic actuator; 51. a valve body; 52. a valve cover; 53. a first oil chamber; 54. a second oil chamber; 55. a rack; 56; a driven wheel; 57. a first oil passage; 58. a second oil passage; 591. a travel screw; 592. a limiting ball; 6. a signal feedback switching device; 61. a switch limiting sheet; 62. switching a display panel; 63. a cam; 64. a camshaft; 65. an integrated circuit board.

Detailed Description

The present invention will be described in further detail with reference to the following specific examples, but the present invention is not limited to the following specific examples.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Example 1

As shown in fig. 1-4, the utility model discloses an integration quick response valve electricity liquid drive arrangement, it includes oil tank 1, gear pump 2, hydraulic drive module 3, motor 4, hydraulic actuator 5 and signal feedback switching device 6.

The oil tank 1 is connected with the hydraulic drive module 3; the oil tank 1 is used for containing hydraulic oil, and the oil observation port 11 and the oil filling port 12 are arranged on the oil tank 1 and used for observing the residual oil quantity in the oil tank 1 and adding the hydraulic oil.

The gear pump 2 is arranged inside the oil tank 1 and is communicated with the hydraulic drive module 3; in the embodiment, the gear pump 2 is a miniature bidirectional gear pump, and the miniature gear pump has a small volume and saves space; the gear pump 2 is used for sucking hydraulic oil from the oil tank 1 and inputting the hydraulic oil into the hydraulic drive module 3. The motor 4 rotates forwards and backwards to drive the bidirectional gear pump to rotate forwards and backwards, so that the working pressure oil port is changed.

The rotating shaft of the motor 4 is connected with the gear shaft of the gear pump 2, in the embodiment, the motor 4 is a micro motor, the size is small, the space is saved, and the motor 4 is used for driving the gear pump 2 to rotate, so that the gear pump 2 absorbs hydraulic oil from the oil tank 1 and inputs the hydraulic oil into the hydraulic driving module 3. In the present embodiment, the motor 4 is provided with an aviation connector 41 for ensuring the IP rating of the motor.

The hydraulic actuator 5 comprises a valve body 51 and a valve cover 52 for closing the valve body 51, wherein a rack 55 is arranged in the valve body 51, the upper end of the rack 55 is connected with the inner wall of the valve body 51 in a sliding manner, namely, the rack 55 can move left and right in the valve body 51; a first oil chamber 53 and a second oil chamber 54 are respectively arranged between the valve body 51 and the left end and the right end of the rack 55, a first oil path 57 and a second oil path 58 which are communicated with the hydraulic drive module 5 are also arranged in the valve body 51, and the first oil path 57 and the second oil path 58 are respectively communicated with the first oil chamber 53 and the second oil chamber 54; the lower end of the rack 55 is provided with a gear, a driven wheel 56 meshed with the lower end of the rack 55 is further arranged in the valve body 51, and a gear shaft on the driven wheel 56 is connected with a controlled valve. In the hydraulic drive module 3, hydraulic oil is respectively input into the first oil chamber 53 or the second oil chamber 54 through the first oil path 57 or the second oil path 58, so that the oil pressure in the first oil chamber 53 or the second oil chamber 54 is increased, the rack 55 is driven to move left and right, the driven wheel 56 is driven to rotate, and the driven wheel 56 drives the controlled valve to be opened or closed.

The signal feedback switch device 6 comprises a switch display disc 62 and a cam shaft 64 connected with the switch display disc 62, and the other end of the cam shaft 64 is connected with a gear shaft of the driven wheel 56; the switch display plate 62 is located on the outer wall of the signal feedback switch device 6, so that when the driven wheel 56 rotates to open or close the controlled valve, the switch display plate 62 also rotates along with the cam shaft 64, thereby displaying the opening or closing state of the controlled valve through the switch display plate 62.

Example 2

As shown in fig. 3, the present embodiment is an improvement on embodiment 1, specifically, the signal feedback switch device 6 further includes a switch limiting sheet 61, a cam 63, and an integrated circuit board 65, the cam 63 is disposed on the cam shaft 64, and the integrated circuit board 65 is electrically connected to the switch limiting sheet 61 and the cam shaft 64; when the driven wheel 56 rotates to drive the controlled valve to open or close in place, the cam 63 rotates along with the cam shaft 64 to contact the switch limiting sheet 61, the switch limiting sheet 61 is communicated with a circuit formed by the cam 63, the cam shaft 64 and the integrated circuit board 65, the integrated circuit board 65 is electrically connected with the micro motor 4, and the integrated circuit board 65 controls the micro motor 4 to start or stop.

In this embodiment, the number of the cams 63 is two, the two cams 63 are respectively located at two sides of the cam shaft 64, the two cams 63 are parallel to each other, the number of the switch limiting pieces 61 is two, and the two switch limiting pieces 61 respectively correspond to the two cams 63 in position, that is, the cams 63 are in contact with the switch limiting pieces 61 to be powered on or disconnected once every 90 degrees of rotation.

When the controlled valve is rotated to be opened and closed in place along with the driven wheel 56, the cam 63 abuts against the switch limiting piece 61, so that the switch limiting piece 61 is communicated with a circuit formed by the cam 63, the cam shaft 64 and the integrated circuit board 65, and the integrated circuit board 65 controls the starting and stopping of the micro motor 4 according to a preset program.

Example 3

As shown in fig. 4, this embodiment is an improvement on embodiment 1, and specifically, the hydraulic drive module 5 includes an oil path a and an oil path B respectively communicated with the gear pump 2, a pilot operated check valve a2 for controlling the passage of hydraulic oil is disposed on the oil path a, a pilot operated check valve B2 for controlling the passage of hydraulic oil is disposed on the oil path B, and the oil path a and the oil path B are respectively communicated with the first oil path 57 and the second oil path 58.

As shown in fig. 4, when the motor 4 rotates forward, the bidirectional gear pump 2 rotates forward to suck oil from the oil tank 1, the oil pressure at a1 increases, when the oil pressure reaches a certain level, the pilot-operated check valve a2 opens, the oil passage a communicates, hydraulic oil enters the first oil chamber 53 from the oil passage a through the first oil passage 57, the pressure in the first oil chamber 53 increases, and thus the rack 55 is driven to move toward the second oil chamber 54, and the rack 55 drives the driven wheel 56 to rotate clockwise. When the oil pressure at A1 reaches a certain value, the pilot operated check valve B2 is opened, and the pressure oil in the oil passage B returns to the position B1 through B2.

When the motor 4 rotates reversely, the bidirectional gear pump 2 rotates reversely to suck oil from the oil tank 1, the oil pressure at the position B1 is increased, when the oil pressure reaches a certain degree, the hydraulic control one-way valve B2 is opened, the oil path B is communicated, hydraulic oil enters the second oil chamber 54 from the oil path B through the second oil path 58, the pressure in the second oil chamber 54 is increased, and therefore the rack 55 is driven to move towards the direction of the first oil chamber 53, and the rack 55 drives the driven wheel 56 to rotate anticlockwise. The pressure oil is led to the oil port B. When the oil pressure at B1 reaches a certain value, the pilot operated check valve A2 is opened, and the pressure oil in the oil passage A returns to A1 through A2.

In this embodiment, the hydraulic drive module 3 further includes a relief valve 31 and a hydraulic lock 32, and if the pressure of the oil path inside the hydraulic drive module 3 exceeds the relief pressure of the relief valve 31 due to unexpected situations such as jamming during the opening or closing process of the controlled valve, the relief valve 31 will perform relief to return the hydraulic oil to the oil tank 1. The hydraulic lock 32 locks the pressure of the oil circuit in the hydraulic drive module 3 at the same time to ensure that the hydraulic drive module 3 is stopped at a certain position, thereby ensuring the stability and safety of the operation of the hydraulic drive module 3 and waiting for the timely maintenance.

Example 4

As shown in fig. 2, the present embodiment is an improvement on embodiment 1, and specifically, a limiting structure for limiting the movement of the rack 55 is provided on the valve cover 52, so as to limit the rotation angle of the controlled valve. In the embodiment, the limiting structures are symmetrically arranged at two ends of the valve body 51, the limiting structures comprise a stroke screw 591 and a limiting ball 592 arranged at the tail of the stroke screw 591, the stroke screw 591 is horizontally arranged in the valve cover 52 in a penetrating way, the limiting ball 592 is arranged in the valve body 51, and two ends of the rack 55 can contact the limiting ball 592 during moving, so that the moving distance of the rack 55 is limited by the limiting ball 592.

Example 5

The present embodiment is an improvement on

embodiments

1 and 2, and specifically, the housing of the signal feedback switch device 6 and the switch display panel 62 are both sprayed with insulating paint, so as to prevent electric leakage during use.

The principle of the utility model is that: the gear shaft on the driven wheel 56 is connected with the controlled valve, after the electro-hydraulic driving device is powered on, the micro motor 4 is started, the micro motor 4 drives the micro gear pump 2 to suck oil from the oil tank 1, hydraulic oil is pressed into the hydraulic actuator 5 through the hydraulic driving module 4, specifically, hydraulic oil is pressed into the first oil chamber 53 or the second oil chamber 54 through the first oil path 57 or the second oil path 58 in the hydraulic driving module 3, so that the oil pressure in the first oil chamber 53 or the second oil chamber 54 is increased, the rack 55 is driven to move left and right, the driven wheel 56 is driven to rotate, and the driven wheel 56 drives the controlled valve to open or close. When the controlled valve is completely opened (90 +/-5 degrees) or completely closed, the cam 63 contacts and presses the switch limiting sheet 61, the switch limiting sheet 61 is communicated with a circuit formed by the cam 63, the cam shaft 64 and the integrated circuit board 65, and the integrated circuit board 65 finally controls the micro motor 4 to be started and closed according to a preset program.

The above are merely examples of the features of the present invention, and do not limit the scope of the present invention. All technical solutions formed by adopting equivalent exchanges or equivalent replacements fall within the protection scope of the present invention.

Claims

1. The utility model provides an integration quick response valve electricity liquid drive arrangement which characterized in that: the hydraulic control system comprises an oil tank (1), a gear pump (2), a hydraulic drive module (3), a motor (4), a hydraulic actuator (5) and a signal feedback switch device (6);

the oil tank (1) is connected with the hydraulic drive module (3), and the gear pump (2) is installed inside the oil tank (1) and communicated with the hydraulic drive module (3);

a rotating shaft of the motor (4) is connected with a gear shaft of the gear pump (2);

the hydraulic actuator (5) comprises a valve body (51) and a valve cover (52), a rack (55) which is connected with the inner wall of the valve body (51) in a sliding mode is arranged in the valve body (51), a first oil cavity (53) and a second oil cavity (54) are arranged between the valve body (51) and the rack (55), a first oil way (57) and a second oil way (58) which are communicated with the hydraulic driving module (3) are further arranged in the valve body (51), and the first oil way (57) and the second oil way (58) are respectively communicated with the first oil cavity (53) and the second oil cavity (54); a driven wheel (56) meshed with the rack (55) is further arranged in the valve body (51);

the signal feedback switch device (6) comprises a switch display panel (62) and a cam shaft (64) connected with the switch display panel (62), and the other end of the cam shaft (64) is connected with a gear shaft (561) of the driven wheel (56).

2. The electro-hydraulic driving device of the integrated quick response valve according to claim 1, characterized in that: the signal feedback switch device (6) further comprises a switch limiting sheet (61), a cam (63) and an integrated circuit board (65), wherein the cam (63) is arranged on the cam shaft (64), and the integrated circuit board (65) is electrically connected with the switch limiting sheet (61) and the cam shaft (64); when the driven wheel (56) rotates to drive the valve to be opened or closed in place, the cam (63) rotates along with the cam shaft (64) to contact the switch limiting sheet (61), the switch limiting sheet (61) is communicated with a circuit formed by the cam (63), the cam shaft (64) and the integrated circuit board (65), the integrated circuit board (65) is electrically connected with the motor (4), and the integrated circuit board (65) controls the motor (4) to start or stop.

3. The electro-hydraulic driving device of the integrated quick response valve according to claim 2, characterized in that: the number of the cams (63) is two, the two cams (63) are respectively positioned on two sides of the cam shaft (64), and the two cams (63) are parallel to each other; the number of the switch limiting pieces (61) is two, and the two switch limiting pieces (61) correspond to the two cams (63) respectively in position.

4. The electro-hydraulic driving device of the integrated quick response valve according to claim 1, characterized in that: the hydraulic drive module (3) comprises an oil way A and an oil way B which are respectively communicated with the gear pump (2), a hydraulic control one-way valve A2 used for controlling hydraulic oil to pass through is arranged on the oil way A, a hydraulic control one-way valve B2 used for controlling hydraulic oil to pass through is arranged on the oil way B, and the oil way A and the oil way B are respectively communicated with the first oil way (57) and the second oil way (58).

5. The electro-hydraulic driving device of the integrated quick response valve according to claim 2, characterized in that: the hydraulic drive module (3) further comprises an overflow valve (31) and a hydraulic lock (32).

6. The electro-hydraulic driving device of the integrated quick response valve according to claim 1, characterized in that: and the valve cover (52) is provided with a limiting structure for limiting the moving distance of the rack (55).

7. The electro-hydraulic driving device of the integrated quick response valve according to claim 6, wherein: the limiting structure comprises a stroke screw (591) and a limiting ball (592) mounted at the tail of the stroke screw (591), the stroke screw (591) is arranged in the valve cover (52) in a penetrating mode, and the limiting ball (592) is located in the valve body (51).

8. The electro-hydraulic driving device of the integrated quick response valve according to claim 1, characterized in that: an oil observation port (11) and an oil filling port (12) are arranged on the oil tank (1).

9. The electro-hydraulic driving device of the integrated quick response valve according to claim 1, characterized in that: and an aviation connector (41) is arranged on the motor (4).

10. The electro-hydraulic driving device of the integrated quick response valve according to claim 1, characterized in that: and insulating paint is sprayed on the switch display panel (62).