CN219606196U

CN219606196U - Control system for manual valve

Info

Publication number: CN219606196U
Application number: CN202321240534.2U
Authority: CN
Inventors: 范自发
Original assignee: Bosch Rexroth Beijing Hydraulic Co Ltd
Current assignee: Bosch Rexroth Beijing Hydraulic Co Ltd
Priority date: 2023-05-22
Filing date: 2023-05-22
Publication date: 2023-08-29
Anticipated expiration: 2033-05-22

Abstract

The present utility model provides a control system for a manual valve, comprising: one or more drive cylinders housing drive rods and pistons, the pistons cooperating with the inner walls of the drive cylinders, the drive rods being coupled to the pistons and movable relative to the drive cylinders; a pneumatic cylinder connected to a source of gas and to one end of the gas tube; one or more gas valves comprising a gas inlet, a gas return, a first output port and a second output port, wherein the gas inlet is in communication with the other end of the gas pipe, the gas return is in communication with a source of gas, and the first output port is in communication with one side of a piston in the drive cylinder through a first branch pipe, and the second output port is in communication with the other side of the piston in the drive cylinder through a second branch pipe; and a controller electrically connected to the gas valve and configured to switch the gas valve between different states. The control system for the manual valve has the advantages of simple structure, easy implementation, convenient use and the like, and can provide improved valve control capability.

Description

Control system for manual valve

Technical Field

The present utility model relates to the field of valve control. More specifically, the present utility model relates to a control system for a manual valve, which aims to provide an improved manual valve control solution.

Background

Manual valves are widely used in hydraulic systems and control systems. Manual valves typically have a spool and the spool extends to the exterior of the manual valve. The operator can manually operate the valve spool to change the flow path inside the manual valve to obtain different output effects. For example, by changing the position of the valve element, the output mode of the manual valve can be adjusted, thereby realizing different control effects. Manual valves generally lack automatic control capability and are difficult to provide operational convenience. Furthermore, manual valves often fail to provide the desired control accuracy, subject to operator operation accuracy.

Disclosure of Invention

It is an object of an aspect of the present utility model to provide a control system for a manual valve which provides improved valve operability.

The utility model aims at realizing the following technical scheme:

a control system for a manual valve, comprising:

one or more drive cylinders housing drive rods and pistons, the pistons cooperating with the inner walls of the drive cylinders, the drive rods being coupled to the pistons and movable relative to the drive cylinders;

a pneumatic cylinder connected to a source of gas and to one end of the gas tube;

one or more gas valves comprising a gas inlet, a gas return, a first output port and a second output port, wherein the gas inlet is in communication with the other end of the gas pipe, the gas return is in communication with a source of gas, and the first output port is in communication with one side of a piston in the drive cylinder through a first branch pipe, and the second output port is in communication with the other side of the piston in the drive cylinder through a second branch pipe; and

a controller electrically connected to the gas valve and configured to switch the gas valve between: the air inlet is communicated with the second output port, the air return port is communicated with the first output port, the air inlet is communicated with the first output port, the air return port is communicated with the second output port, and the first output port and the second output port are closed.

In the control system for a manual valve described above, optionally, one or more throttle valves are further included, which are provided on the first branch pipe and the second branch pipe, and are configured to be operable by a user.

In the control system for a manual valve described above, optionally, one or more pressure sensors are also included, each pressure sensor being associated with a respective throttle valve and configured to sense the gas pressure at the throttle valve.

In the control system for a manual valve described above, optionally, a position sensor is also included, the position sensor being associated with the drive cylinder and configured to sense a position of the drive rod within the drive cylinder.

In the control system for a manual valve described above, optionally, the position sensor is electrically connected to a controller configured to receive a sensing signal from the position sensor and to adjust the control signal sent to the gas valve accordingly.

In the control system for a manual valve described above, optionally, one end of the drive lever is coupled with a spool of the manual valve through a sleeve so that the spool moves in synchronization with the drive lever.

In the control system for a manual valve described above, optionally, the manual valve is a hydraulic valve, and the working fluid is received from a hydraulic cylinder.

In the control system for a manual valve described above, optionally, the input and interior of the manual valve includes one or more hydraulic sensors electrically connected to a controller configured to receive a sensing signal from the hydraulic sensors and to adjust the control signal sent to the gas valve accordingly.

In the control system for a manual valve described above, optionally, a safety valve is further included, one end of which is communicated to the air pipe, and the other end of which is communicated to the return air port of the air valve.

In the control system for a manual valve described above, the controller optionally includes one or more programmable logic controllers.

Drawings

The utility model will be described in further detail below with reference to the drawings and the preferred embodiments. Those skilled in the art will appreciate that these drawings are drawn for the purpose of illustrating preferred embodiments only and thus should not be taken as limiting the scope of the utility model. Moreover, unless specifically indicated otherwise, the drawings are merely intended to conceptually illustrate the compositions or constructions of the described objects, and may contain exaggerated representations. The figures are also not necessarily drawn to scale.

FIG. 1 is a hydraulic connection diagram of one embodiment of a control system for a manual valve of the present utility model.

Fig. 2 is a partial enlarged view of a portion A1 in fig. 1.

Detailed Description

Preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely illustrative, exemplary, and should not be construed as limiting the scope of the utility model.

First, terms of top, bottom, upward, downward, and the like are defined with respect to directions in the drawings. These orientations are relative concepts and will therefore vary depending on the location and state in which they are located. These and other directional terms should not be construed as limiting.

Furthermore, it should also be noted that, for any individual feature described or implied in the embodiments herein or any individual feature shown or implied in the figures, these features (or their equivalents) can be combined further to obtain other embodiments not directly mentioned herein.

It should be noted that in different drawings, the same reference numerals denote the same or substantially the same components.

Fig. 1 is a hydraulic connection diagram of one embodiment of a control system for a manual valve of the present utility model, and fig. 2 is a partial enlarged view of a portion A1 in fig. 1. According to one embodiment of the utility model, a control system for a manual valve may comprise: a driving cylinder 100, a pneumatic cylinder 200, a gas valve 300, a controller 400, a throttle valve 500, a relief valve 700, and the like. In the embodiment shown in fig. 1, the control system for the manual valve is shown together with the manual valve 10. Fig. 2 shows a detail of the portion A1 in fig. 1.

The number of drive cylinders 100 may be one or more. The number of the driving cylinders 100 may be the number of the valve spools 11 corresponding to the manual valve 10. In the illustrated embodiment, two drive cylinders 100 are used to operate two spools 11 of the manual valve 10, respectively. The interior of the drive cylinder 100 may form a piston structure. For example, the inner wall of the drive cylinder 100 may enclose a cavity, and the cavity may have a generally elongated structure. The drive rod 101 and the piston 102 may be housed within the drive cylinder 100. For example, the piston 102 may be mated with an inner wall of the drive cylinder 100, and the drive rod 101 may be coupled to the piston 102 such that the drive rod 101 and the piston 102 move synchronously. The driving rod 101 is movable with respect to the driving cylinder 100, and the driving rod 101 may extend to the outside of the driving cylinder 100. For example, as shown in fig. 2, one end of the drive rod 101 may be coupled to the spool 11 of the manual valve 10 by a sleeve 12. It is easily understood that a sealing ring, or a bearing may be provided at a position where the driving rod 101 contacts the driving cylinder 100.

The cavity inside the drive cylinder 100 may be divided into two parts by the piston 102: a portion on one side of the piston 102 and a portion on the other side of the piston 102. By supplying these two portions of working fluid and providing different working fluid pressures, it is possible to adjust the stress situation of the piston 102 such that the piston 102 moves or is stationary inside the drive cylinder 100, thereby driving the spool 11 to move or be stationary by the drive rod 101.

Pneumatic cylinder 200 may be connected to gas source 20 and may be connected to one end of gas tube 201. In one embodiment, pneumatic cylinder 200 delivers working fluid from gas source 20 to gas line 201. In one embodiment, the working fluid may be a gas or a liquid. It is readily understood that the pneumatic cylinder 200 may include a relief valve. In one embodiment, the gas source 20 may provide air as the working fluid.

The gas valve 300 may be disposed between the driving cylinder 100 and the pneumatic cylinder 200. In one embodiment, the gas valve 300 may be a reversing valve. In one embodiment, the gas valve 300 may include a gas inlet P, a gas return T, a first output port a, and a second output port B. The air inlet P may be connected to the other end of the air pipe 201 to receive the working fluid from the pneumatic cylinder 200. The return port T may be connected to a gas source 20. The first output port a and the second output port B may be communicated to the driving cylinder 100 through the first branch pipe 210 and the second branch pipe 220, respectively. In the illustrated embodiment, the first branch 210 communicates to one side of the piston 102 and the second branch 220 communicates to the other side of the piston 102.

Fig. 1 and 2 also schematically illustrate different states that the gas valve 300 may have. Arrows in the gas valve 300 may represent the direction of communication of the working fluid. For example, in the illustrated state, the first output port a and the second output port B are closed, i.e., the working fluid in the drive cylinder 100 is kept at a constant pressure, so that the piston 102, the drive rod 101, and the spool 11 are kept stationary.

In another state, the air intake port P communicates with the second output port B, and the air return port T communicates with the first output port a, so that the working fluid from the air intake port P is delivered to one side (i.e., the left side) of the piston 102 through the second output port B and the second branch pipe 220. The working fluid pressure on one side of the piston 102 rises and the working fluid pressure on the other side of the piston 102 converges with the pressure of the gas source 20. Thus, the piston 102 will tend to move to the right, thereby bringing the piston 102, the drive rod 101 and the spool 11 to the right.

In another state, the air inlet P communicates with the first output port a, and the return air port T communicates with the second output port B. Working fluid from the intake port P is delivered to the other side (i.e., right side) of the piston 102 through the first output port a and the first branch pipe 210. The working fluid pressure on the other side of the piston 102 rises and the working fluid pressure on one side of the piston 102 converges with the pressure of the gas source 20. Thus, the piston 102 will tend to move to the left, thereby driving the piston 102, the drive rod 101 and the spool 11 to move to the left.

In this way, by switching the gas valve 300 before different states, it is possible to move the spool 11 leftward, rightward or stationary in synchronization, thereby achieving position adjustment of the spool 11, and different output modes can be achieved by the manual valve 10.

The controller 400 may be electrically connected to the gas valve 300. In the illustrated embodiment, the dashed line B1 represents an electrical connection between the controller 400 and the gas valve 300. The controller 400 may include one or more Programmable Logic Controllers (PLCs).

The throttle valve 500 may be provided on the first branch pipe 210 and the second branch pipe 220, and the throttle valve 500 may be manually operated by an operator. In one embodiment, pressure sensor 510 may also be provided in association with first branch pipe 210 and second branch pipe 220 and sense the pressure of the working fluid within first branch pipe 210 and second branch pipe 220. The data sensed by the pressure sensor 510 may be transmitted to the controller 400, and a broken line B2 in fig. 1 represents an electrical connection between the pressure sensor 510 and the controller 400.

Although not shown, it is readily understood that the drive cylinder 100 may include a position sensor. A position sensor may be used to sense the position of the piston 102 and the drive rod 101. Data sensed by the position sensor may also be provided to the controller 400.

According to the illustration of fig. 1, the individual ports of the manual valve 10 may also comprise pressure sensors, for example hydraulic pressure sensors 13. Data sensed by the hydraulic pressure sensor 13 may also be transmitted to the controller 400. The dashed line B3 in fig. 1 represents the electrical connection between the hydraulic sensor 13 and the controller 400.

Hydraulic cylinder 600 may be associated with manual valve 10 and deliver liquid from liquid source 30 as a working fluid to manual valve 10. Similarly, hydraulic cylinder 600 may also include a relief valve.

A safety valve 700 may be provided between the air pipe 201 and the return air port T in order to provide the necessary safety protection capability.

The control system for a manual valve of the present utility model has advantages of simplicity and reliability, easy implementation, convenient use, etc., and can provide improved valve operation capability. By adopting the control system of the utility model, the valve core position of the manual valve can be accurately controlled, thereby remarkably improving the operability of the manual valve. Furthermore, the control system for a manual valve of the present utility model has significant advantages in terms of manufacturing.

The present specification discloses the present utility model with reference to the accompanying drawings and also enables one skilled in the art to practice the utility model, including making and using any devices or systems, selecting suitable materials, and using any incorporated methods. The scope of the utility model is defined by the claims and encompasses other examples that will occur to those skilled in the art. Such other examples should be considered to be within the scope of protection as determined by the claimed subject matter, so long as such other examples include structural elements that are not literally different from the claimed subject matter, or include equivalent structural elements with insubstantial differences from the literal languages of the claimed subject matter.

Claims

1. A control system for a manual valve, comprising:

one or more drive cylinders (100) housing a drive rod (101) and a piston (102), the piston (102) cooperating with an inner wall of the drive cylinder (100), the drive rod (101) being coupled with the piston (102) and being movable relative to the drive cylinder (100);

a pneumatic cylinder (200) connected to the gas source (20) and to one end of the gas pipe (201);

one or more gas valves (300) comprising a gas inlet (P), a gas return (T), a first output port (a) and a second output port (B), wherein the gas inlet (P) communicates to the other end of the gas pipe (201), the gas return (T) communicates to the gas source (20), and the first output port (a) communicates to one side of the piston (102) in the drive cylinder (100) through a first branch (210), and the second output port (B) communicates to the other side of the piston (102) in the drive cylinder (100) through a second branch (220); and

a controller (400) electrically connected to the gas valve (300) and configured to switch the gas valve (300) between: the air inlet (P) is communicated with the second output port (B) and the air return port (T) is communicated with the first output port (A), the air inlet (P) is communicated with the first output port (A) and the air return port (T) is communicated with the second output port (B), and the first output port (A) and the second output port (B) are closed.

2. The control system for a manual valve according to claim 1, further comprising one or more throttle valves (500), the throttle valves (500) being provided on the first branch pipe (210) and the second branch pipe (220) and configured to be operable for a user.

3. The control system for a manual valve according to claim 2, further comprising one or more pressure sensors (510), each pressure sensor (510) being associated with a respective throttle valve (500) and configured to sense a gas pressure at the throttle valve (500).

4. The control system for a manual valve according to claim 1, further comprising a position sensor associated with the drive cylinder (100) and configured to sense a position of the drive rod (101) within the drive cylinder (100).

5. The control system for a manual valve according to claim 4, wherein the position sensor is electrically connected to the controller (400), the controller (400) being configured to receive a sensing signal from the position sensor and thereby adjust a control signal sent to the gas valve (300).

6. The control system for a manual valve according to claim 1, characterized in that one end of the drive rod (101) is coupled with a spool (11) of a manual valve (10) by a sleeve (12) such that the spool (11) moves in synchronization with the drive rod (101).

7. The control system for a manual valve according to claim 6, characterized in that the manual valve (10) is a hydraulic valve and receives working fluid from a hydraulic cylinder (600).

8. The control system for a manual valve according to claim 6, characterized in that the input and the interior of the manual valve (10) comprise one or more hydraulic sensors (13), the hydraulic sensors (13) being electrically connected with the controller (400), the controller (400) being configured to receive a sensing signal from the hydraulic sensors (13) and to adjust the control signal sent to the gas valve (300) accordingly.

9. Control system for manual valves according to any one of claims 1-8, characterised in that it further comprises a safety valve (700), one end of the safety valve (700) being connected to the gas pipe (201) and the other end being connected to the return air port (T) of the gas valve (300).

10. The control system for a manual valve according to any one of claims 1-8, characterized in that the controller (400) comprises one or more programmable logic controllers.