Novel valve position feedback device

Abstract

The utility model discloses a novel valve position feedback device which comprises a position feedback device shell. The main control unit is arranged at the upper end in the position feedback device shell; the execution unit is arranged at the bottom of the position feedback device shell; the valve feedback unit is arranged in the position feedback device shell and is provided with a fixed value resistor; the execution unit and the valve feedback unit are electrically connected with the main control unit; wherein the main control unit controls the execution unit to adjust the position of the valve, the resistance of the valve feedback unit is changed according to the change of the execution unit, and the valve feedback unit feeds the change information of the resistance back to the main control unit. The valve feedback unit is provided with the fixed-value resistor, sliding resistance is provided for the execution unit in the up-and-down moving process of the execution unit, and the problem that the valve position feedback device is affected by mechanical factors such as vibration to cause contact failure is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of valve feedback devices, and specifically relates to a novel valve position feedback device. Background Art

[0002] The valve position feedback device is a device that feeds back the valve opening position. It can feed back the signal to the central control room and remotely monitor the working status of the valve, which is convenient for timely production process adjustment. When used with PLC, it can greatly reduce the frequency of on-site operations by personnel. It is used on valves in various industrial pipelines and equipment, and the application industries include water treatment, pharmaceuticals, food production, petrochemicals, energy, semiconductors, etc.

[0003] Existing similar products mostly use contact type and micro switches, but they are easily affected by mechanical factors such as vibration during use, resulting in contact failure. Therefore, a new valve position feedback device is provided. Utility Model Content

[0004] The utility model aims to provide a novel valve position feedback device to solve the problem of contact failure caused by mechanical factors such as vibration during use.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: a new valve position feedback device, comprising:

[0006] Position feedback device housing;

[0007] A main control unit is arranged at the upper end of the inner part of the housing of the position feedback device;

[0008] An execution unit, arranged at the bottom of the housing of the position feedback device, for adjusting the position of the valve;

[0009] The valve feedback unit is arranged inside the housing of the position feedback device, and a fixed value resistor is arranged, so that the resistance of the valve feedback unit changes according to the change of the execution unit;

[0010] The execution unit and the valve feedback unit are both electrically connected to the main control unit; wherein the main control unit controls the execution unit to adjust the valve position, and the resistance of the valve feedback unit changes according to the change of the execution unit, and the valve feedback unit feeds back the resistance change information to the main control unit.

[0011] Preferably, the execution unit comprises a connecting bolt arranged at the bottom of the position feedback device housing, a shaft is arranged on the inner side of the connecting bolt, and an adjusting nut is arranged at the bottom of the shaft.

[0012] Preferably, the valve feedback unit comprises a sliding resistor arranged inside a housing of the position feedback device, a sliding block is provided on a side wall of the shaft, and a sliding end of the sliding resistor is connected to the sliding block.

[0013] Preferably, it also includes a power connection unit, which is used to connect the position feedback device to an external power supply;

[0014] The power connection unit is configured as an electronic aviation connector.

[0015] Preferably, it also includes a display unit for indicating a signal of feedback valve status;

[0016] The display unit is configured as a feedback light.

[0017] Preferably,

[0018] Feedback valve closing status signal, the display unit displays yellow;

[0019] Feedback valve opening status signal, the display unit displays green;

[0020] The signal of the valve fault state is fed back, and the display unit displays red.

[0021] Preferably, it also includes a remote control unit for remotely controlling the opening of the valve;

[0022] The remote control unit includes a signal receiving module, a display module, a control panel, a wireless module and a power module;

[0023] The main control unit transmits the valve position information to the signal receiving module through the wireless module, and the signal receiving module transmits the information of controlling the control panel to adjust the opening to the main control unit through the wireless module. The display module displays the valve position information, and the power module is used to power the control panel.

[0024] Preferably, the main control unit includes a selection modulation module;

[0025] The selection modulation module comprises a valve normally open module and a valve normally closed module.

[0026] Preferably, in case of valve closing failure, the main control unit returns to selecting the modulation module;

[0027] Preferably, a transparent shell is provided on the shell of the position feedback device.

[0028] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model provides a new type of valve position feedback device. During the use of the valve position feedback device, a fixed resistance is set by a valve feedback unit, and a sliding resistance is provided to the execution unit during the up and down movement of the execution unit, thereby effectively avoiding the problem of contact failure of the valve position feedback device caused by mechanical factors such as vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0030] Figure 2 This is a system schematic diagram of the main control unit of the utility model;

[0031] Figure 3 It is a system schematic diagram of the remote control unit of the utility model.

[0032] In the figure: 1. Position feedback device housing; 2. Main control unit; 2-1. Selection modulation module; 2-1-1. Valve normally open module; 2-1-2. Valve normally closed module; 3. Actuator unit; 3-1. Connecting bolt; 3-2. Shaft; 3-3. Adjusting nut; 4. Valve feedback unit; 4-1. Sliding resistor; 4-2. Slider; 5. Power connection unit; 6. Display unit; 7. Remote control unit; 7-1. Signal receiving module; 7-2. Display module; 7-3. Control panel; 7-4. Wireless module; 7-5. Power module; 8. Transparent housing. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] See also Figure 1-3The utility model provides a technical solution: a new valve position feedback device, comprising: a position feedback device housing 1; a main control unit 2 is arranged at the upper end of the position feedback device housing 1; the main control unit is arranged as a PLC circuit board, the PLC circuit board is equipped with a chip, and the resistance value change of the valve feedback unit 4 is analyzed by pre-burning a program; the execution unit 3 is arranged at the bottom of the position feedback device housing 1, and is used to adjust the position of the valve; the valve feedback unit 4 is arranged inside the position feedback device housing 1, and a fixed value resistor is set, and the resistance of the valve feedback unit 4 is changed according to the change of the execution unit 3; the execution unit 3 and the valve feedback unit 4 are both electrically connected to the main control unit 2; wherein the main control unit 2 controls the execution unit 3 to adjust the valve position, and the resistance of the valve feedback unit 4 is changed according to the change of the execution unit 3, and the valve feedback unit 4 feeds back the resistance change information to the main control unit 2, and in the process of using the valve position feedback device, a fixed value resistor is set by the valve feedback unit 4, and in the process of the execution unit 3 moving up and down, a sliding resistance is provided to the execution unit 3, which effectively avoids the problem of contact failure of the valve position feedback device due to mechanical factors such as vibration.

[0035] Specifically, the execution unit 3 includes a connecting bolt 3-1 arranged at the bottom of the position feedback device housing 1, a shaft rod 3-2 is provided on the inner side of the connecting bolt 3-1, and an adjusting nut 3-3 is provided at the bottom of the shaft rod 3-2. When in use, the connecting bolt 3-1 is connected to the valve, and the shaft rod 3-2 changes with the opening of the valve. The adjusting nut 3-3 is used to adjust the opening of the valve. When in use, when the opening of the valve changes, the height of the shaft rod 3-2 changes, and the opening position of the valve is fed back.

[0036] Specifically, the valve feedback unit 4 includes a sliding resistor 4-1 arranged inside the position feedback device housing 1, the sliding resistor 4-1 is set as a circuit board inside the position feedback device housing 1, a slider 4-2 is provided on the side wall of the shaft 3-2, the sliding end of the sliding resistor 4-1 is connected to the slider 4-2, a support rod is provided on the circuit board, the slider 4-2 is connected to the support rod, a fixed resistance is set by the sliding resistor 4-1, and in the process of the shaft 3-2 driving the slider 4-2 to move up and down, the slider 4-2 is driven to move up and down to change the resistance of the sliding resistor 4-1.

[0037] Specifically, it also includes a power connection unit 5 for connecting the position feedback device to an external power supply; the power connection unit 5 is configured as an electronic aviation connector, and the electronic aviation connector is provided with four core wires to ensure stable power supply to the valve feedback device.

[0038] Specifically, it also includes a display unit 6 for indicating a signal for feedback of the valve status; the display unit 6 is configured as a feedback light, and the valve opening status is indicated by the display unit 6 for prompting the user.

[0039] Specifically, when the signal of the valve closing state is fed back, the display unit 6 displays yellow; when the signal of the valve opening state is fed back, the display unit 6 displays green; when the signal of the valve failure state is fed back, the display unit 6 displays red. Different colors are displayed by the display unit 6 to represent the information of the valve opening device.

[0040] Specifically, it also includes a remote control unit 7 for remotely controlling the opening of the valve; the remote control unit 7 includes a signal receiving module 7-1, a display module 7-2, a control panel 7-3, a wireless module 7-4 and a power module 7-5; the control panel 7-3 has a PLC control panel, and the control panel 7-3 is electrically connected to the signal receiving module 7-1, the display module 7-2 and the wireless module 7-4 respectively, the display module 7-2 displays the position information of the valve, and the power module 7-5 is used to power the control panel 7-3. When in use, the main control unit 2 transmits the position information of the valve to the signal receiving module 7-1 through the wireless module 7-4, and the signal receiving module 7-1 transmits the information of adjusting the opening by controlling the control panel 7-3 to the main control unit 2 through the wireless module 7-4.

[0041] Specifically, the main control unit 2 includes a selection modulation module 2-1; the selection modulation module 2-1 has a valve normally open module 2-1-1 and a valve normally closed module 2-1-2, and the valve opening is controlled by selecting the valve normally open module 2-1-1 and the valve normally closed module 2-1-2 on the selection modulation module 2-1.

[0042] Specifically, when the valve closes, the main control unit 2 returns to select the modulation module 2-1. When the valve closes, the valve opening is adjusted again by returning to select the modulation module 2-1, thereby ensuring the stability of the control valve position feedback device.

[0043] Specifically, a transparent shell 8 is provided on the position feedback device shell 1 , and the transparent shell 8 is provided to facilitate the user to observe the internal situation of the position feedback device shell 1 .

[0044] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new valve position feedback device, characterized in that: include: Position feedback device housing (1); A main control unit (2) is arranged at the upper end of the position feedback device housing (1); An execution unit (3), arranged at the bottom of the position feedback device housing (1), and used for adjusting the position of the valve; A valve feedback unit (4) is arranged inside the housing (1) of the position feedback device, and a fixed value resistor is arranged, so that the resistance of the valve feedback unit (4) changes according to the change of the execution unit (3); The execution unit (3) and the valve feedback unit (4) are both electrically connected to the main control unit (2); wherein the main control unit (2) controls the execution unit (3) to adjust the valve position, and changes the resistance of the valve feedback unit (4) according to the change of the execution unit (3), and the valve feedback unit (4) feeds back the resistance change information to the main control unit (2).

2. A novel valve position feedback device according to claim 1, characterized in that: The execution unit (3) comprises a connecting bolt (3-1) arranged at the bottom of the position feedback device housing (1), a shaft (3-2) is arranged on the inner side of the connecting bolt (3-1), and an adjusting nut (3-3) is arranged at the bottom of the shaft (3-2).

3. A novel valve position feedback device according to claim 2, characterized in that: The valve feedback unit (4) comprises a sliding resistor (4-1) arranged inside the position feedback device housing (1), a sliding block (4-2) is provided on the side wall of the shaft (3-2), and a sliding end of the sliding resistor (4-1) is connected to the sliding block (4-2).

4. A novel valve position feedback device according to claim 1, characterized in that: It also includes a power connection unit (5) for connecting the position feedback device to an external power supply; The power connection unit (5) is configured as an electronic aviation connector.

5. A novel valve position feedback device according to claim 1, characterized in that: It also includes a display unit (6) for indicating a signal of the feedback valve status; The display unit (6) is configured as a feedback lamp.

6. A novel valve position feedback device according to claim 5, characterized in that: Feedback valve closing status signal, the display unit (6) displays yellow; Feedback valve opening signal, the display unit (6) displays green; The signal of the valve fault status is fed back, and the display unit (6) displays red.

7. A novel valve position feedback device according to claim 1, characterized in that: It also includes a remote control unit (7) for remotely controlling the opening of the valve; The remote control unit (7) comprises a signal receiving module (7-1), a display module (7-2), a control panel (7-3), a wireless module (7-4) and a power module (7-5); The main control unit (2) transmits the valve position information to the signal receiving module (7-1) via the wireless module (7-4); the signal receiving module (7-1) controls the control panel (7-3) via the wireless module (7-4) to transmit the opening adjustment information to the main control unit (2); the display module (7-2) displays the valve position information; and the power supply module (7-5) is used to supply power to the control panel (7-3).

8. A novel valve position feedback device according to claim 1, characterized in that: The main control unit (2) comprises a selection modulation module (2-1); The selection modulation module (2-1) comprises a valve normally open module (2-1-1) and a valve normally closed module (2-1-2).

9. A novel valve position feedback device according to claim 6, characterized in that: In case of valve closing failure, the main control unit (2) returns to selecting the modulation module (2-1).

10. A novel valve position feedback device according to claim 1, characterized in that: A transparent shell (8) is provided on the position feedback device shell (1).

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