Novel universal valve control circuit

Abstract

The utility model belongs to the technical field of electric valve application, and relates to a novel universal valve control circuit which comprises a control module, a power supply terminal 1, a power supply terminal 2 and a power supply terminal 3 of the control module are connected with a power supply lead, a circuit breaker QF is arranged on the power supply lead, an output terminal 11, an output terminal 12 and an output terminal 13 of the control module are connected to a motor M, and the motor M is connected with the circuit breaker QF. Connecting terminals 4 to 8 of the control module are connected to the valve electric device, a connecting terminal 9 and a connecting terminal 10 of the control module are connected to the valve electric device in parallel through wires, and a button SB1 and a button SB2 are arranged on the wires through which the connecting terminal 9 and the connecting terminal 10 are connected to the valve electric device respectively. The valve control device is simple in wiring, few in used elements, adjustable in current, capable of being applied to valve control of various powers, and convenient to maintain at the same time.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric valve application, and in particular relates to a novel universal valve control circuit. Background Art

[0002] Electric valves are widely used in various process control fields in modern enterprises and play an irreplaceable role in industrial production and daily life. When used in automated control systems, electric valves need to be paired with specialized valve control boxes to achieve remote control, signal transmission, safety protection and other functions.

[0003] However, existing valve control box technology has some significant drawbacks:

[0004] 1. Control boxes lack versatility. Due to the diverse range of valve models and the wide power range of motors, each motor power requires a corresponding control box for motor safety considerations. This results in a wide variety of valve control boxes, making centralized management and maintenance difficult.

[0005] 2. Control boxes are not interchangeable, making maintenance difficult. Different models of control boxes differ in structural design, functional configuration, and wiring methods, making them incompatible. When a malfunction occurs, they must be replaced or repaired based on the specific model, increasing repair costs and time. The numerous components and complex wiring require a high level of technical expertise, making repairs difficult.

[0006] 3. Numerous components, complex wiring, and poor maintainability. Traditional valve control boxes contain a variety of sensors, relays, circuit components, etc., with complex wiring and redundant structures, increasing maintenance costs and downtime.

[0007] Therefore, a new universal valve control circuit is proposed to solve these problems. Utility Model Content

[0008] The purpose of the utility model is to provide a new universal valve control circuit, which has universal control functions for valve control, has the advantages of simple wiring, few components and strong versatility, and solves the problems of the control box in the prior art that lacks versatility, is difficult to maintain, has many components, complex wiring and poor maintainability.

[0009] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is that the present invention provides a new universal valve control circuit, including a control module, the power terminals 1, 2 and 3 of the control module are connected to the power lead, and a circuit breaker QF is provided on the power lead. The output terminals 11, 12 and 13 of the control module are connected to the motor M, the connection terminals 4 to 8 of the control module are connected to the valve electric device, the connection terminals 9 and 10 of the control module are connected to the valve electric device in parallel through wires, and buttons SB1 and button SB2 are respectively provided on the wires connecting the connection terminals 9 and 10 to the valve electric device.

[0010] Preferably, the power lead is connected to a three-phase power supply.

[0011] Preferably, the connection terminal 4 is a power supply terminal, and the power supply voltage of the connection terminal 4 is 24V.

[0012] Preferably, the control module is provided with a current knob.

[0013] Preferably, the connecting terminal 5 is connected to the SLO switch in the valve electric device, the connecting terminal 6 is connected to the SLC switch in the valve electric device, the connecting terminal 5 is connected to the STO switch in the valve electric device, and the connecting terminal 5 is connected to the STC switch in the valve electric device.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are:

[0015] 1. The utility model has simple wiring, uses few components, and the current can be adjusted. It can be applied to valve control of various powers and is relatively easy to maintain.

[0016] 2. The utility model has the universal control function of valve control, with the advantages of simple wiring, few components and strong versatility, which solves the problems of the control box of the prior art, such as lack of versatility, difficult maintenance and numerous components.

[0017] The wiring is complicated and the maintainability is poor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] Figure 1 This is a structural diagram of a new general valve control circuit;

[0020] In the above figure, 11 is the control module, 12 is the current knob, and 13 is the valve electric device. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1, as Figure 1 As shown, a novel universal valve control circuit includes a control module 11. This control module 11 is the core of the entire valve control circuit, responsible for receiving control signals and driving the valve motor M to open and close the valve. Power terminals 1, 2, and 3 of the control module 11 are connected to power leads, which connect to an external power source. A circuit breaker QF is provided on the power lead to disconnect the power supply, preventing damage caused by overloads or short circuits.

[0024] Output terminals 11, 12, and 13 of the control module 11 are connected to the motor M. The output terminals 11, 12, and 13 output current to the motor M and control the rotation direction and speed of the motor M by regulating the current. The motor M drives the valve to operate.

[0025] The connection terminals 4 to 8 of the control module 11 are connected to the valve electric device 13, and the valve electric device 13 is interlocked with the motor M to realize the start and stop control and operation protection of the motor M. By connecting the valve electric device 13 to the control module 11, the operation regulation of the motor M is realized.

[0026] The connection terminals 9 and 10 of the control module 11 are connected in parallel to the valve electric device 13 through wires. The wires connecting the connection terminals 9 and 10 to the valve electric device 13 are respectively provided with buttons SB1 and SB2. Buttons SB1 and SB2 are used to manually control the opening and closing states, which is convenient for the operator to directly control

[0027] The following is a detailed description of the design of the above key components:

[0028] The power leads are connected to a three-phase power supply. These leads connect the three phases of the three-phase power supply to power terminals 1 through 3 of the control module 11 using a standardized connection method, using dedicated power cables. The three-phase power supply provides a stable energy supply, meeting the power requirements of the control module 11 and the electric motor M. The connection must be secure and reliable, complying with relevant safety standards and preventing contact hazards.

[0029] The connection terminal 4 is a power supply terminal, and the power supply voltage of the connection terminal 4 is 24 V. The 24 V DC power supply is a universal industrial control voltage, which is easy to obtain, highly safe and stable. The use of an isolated power supply method can more effectively improve safety.

[0030] The control module 11 is provided with a current knob 12. This knob adjusts the current output to the motor M. The current knob 12, provided on the control module 11, can control the current supplied to the motor by varying parameters in the regulating circuit. Specifically, the current knob 12 adjusts the resistance of a variable resistor to change the current supplied to the motor M. The current knob 12 operates based on Ohm's law, which states that current i equals voltage u divided by resistance r, or i = u / r. The current knob 12 contains an adjustable resistor. Rotating the knob changes the resistance value in the circuit, thereby adjusting the current.

[0031] The connecting terminal 5 is connected to the SLO switch in the valve electric device 13, the connecting terminal 6 is connected to the SLC switch in the valve electric device 13, the connecting terminal 5 is connected to the STO switch in the valve electric device 13, and the connecting terminal 5 is connected to the STC switch in the valve electric device 13. The SLO switch is a lower limit switch, the STO switch is an overload temperature protection switch, the SLC switch is an upper limit switch, and the STC switch is a short-circuit protection switch. The SLO switch and the SLC switch realize valve stroke limit to avoid damage to the valve due to excessive operation, and the circuit safety is protected by the STO switch and the STO switch.

[0032] When the valve needs to be opened, press button SB1 installed on the valve control box. Output terminals 11, 12, and 13 output positive phase sequence voltage, driving motor M to rotate forward, and the valve opens. The valve opens until the valve is opened, the SLO switch of valve electric device 13 is actuated, and the valve stops outputting. Similarly, to close the valve, press button SB2. Output terminals 11, 12, and 13 output negative phase sequence power, motor M rotates in reverse, and the valve closes until the SLC switch completes the valve closing.

[0033] 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 description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology. It will not be described in detail here. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field.

[0034] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A new universal valve control circuit, characterized in that: It includes a control module, wherein the power terminals 1, 2 and 3 of the control module are connected to the power lead, a circuit breaker QF is provided on the power lead, the output terminals 11, 12 and 13 of the control module are connected to the motor M, the connection terminals 4 to 8 of the control module are connected to the valve electric device, the connection terminals 9 and 10 of the control module are connected to the valve electric device in parallel through wires, and buttons SB1 and SB2 are respectively provided on the wires connecting the connection terminals 9 and 10 to the valve electric device.

2. A novel universal valve control circuit according to claim 1, characterized in that: The power leads are connected to a three-phase power source.

3. A novel universal valve control circuit according to claim 1, characterized in that: The connection terminal 4 is a power supply terminal, and the power supply voltage of the connection terminal 4 is 24V.

4. A novel universal valve control circuit according to claim 1, characterized in that: The control module is provided with a current knob.

5. A novel universal valve control circuit according to claim 1, characterized in that: The connecting terminal 5 is connected to the SLO switch in the valve electric device, the connecting terminal 6 is connected to the SLC switch in the valve electric device, the connecting terminal 5 is connected to the STO switch in the valve electric device, and the connecting terminal 5 is connected to the STC switch in the valve electric device.

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