Intelligent servo proportioning valve

Abstract

The utility model discloses an intelligent servo proportion regulating valve, which belongs to the technical field of valves, and comprises a double-end ball valve body, a valve core, a valve seat, a valve rod, a valve rod, a valve rod, a valve rod, a valve rod, a valve rod and a valve rod, the servo positioning control system comprises a servo driver, a servo motor and a precision speed reducer, the servo driver is electrically connected with the servo motor, the output end of the servo motor is connected with the precision speed reducer, and a coupler is arranged between the valve rod and the output end of the precision speed reducer; and the human-computer interface comprises a PLC (Programmable Logic Controller) system and an industrial touch screen, and the PLC system is connected with the industrial touch screen and the servo driver. The adjusting period and precision are controlled through the servo positioning control system, the control precision is improved, the man-machine interface can operate and monitor the state of the valve body, and the functions are highly integrated.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to an intelligent servo proportional regulating valve. Background Art

[0002] The main regulating valves used in the current market are electric regulating butterfly valves and pneumatic diaphragm valves. The advantages of electric regulating butterfly valves are simple structure, easy installation, and high cost performance; the disadvantages are poor linearity, long valve position action cycle, and are not suitable for projects that require control accuracy. Pneumatic diaphragm valves have good adjustability and service life, and good valve body sealing. The disadvantage is that they must be equipped with expensive imported positioners, and the steps for setting and zeroing the positioners are cumbersome; in addition, an air compressor must be added to provide an air source, otherwise the equipment cannot operate.

[0003] The current butterfly valves on the market have poor regulation accuracy and are unable to monitor the status of the valve body; therefore, we propose an intelligent servo proportional control valve to solve this problem. Utility Model Content

[0004] The purpose of the utility model is to provide an intelligent servo proportional control valve to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An intelligent servo proportional control valve, comprising:

[0007] A double-headed ball valve body comprises a valve core and a valve seat, wherein the valve core is rotatably mounted in the valve seat, and a valve stem is fixedly connected to the top of the valve core;

[0008] A servo positioning control system, comprising a servo driver, a servo motor and a precision reducer, wherein the servo driver is electrically connected to the servo motor, an output end of the servo motor is connected to the precision reducer, and a coupling is provided between the valve stem and the output end of the precision reducer;

[0009] The human-machine interface comprises a PLC system and an industrial touch screen, wherein the PLC system is connected with the industrial touch screen and a servo driver.

[0010] Preferably, the servo motor is fixedly mounted on the top of the precision reducer, and a mounting cylinder is fixedly mounted on the bottom of the precision reducer, a bracket is fixedly mounted on the bottom of the mounting cylinder, a pad is fixedly mounted on the bottom of the bracket, and a support cylinder is fixedly connected between the pad and the valve seat.

[0011] Preferably, a sealing ring is fixedly installed in the valve seat, and the sealing ring movably seals against the outer side of the valve core.

[0012] Preferably, a sealing bearing is fixedly mounted on the top of the valve seat, and the sealing bearing is arranged on the outside of the valve stem.

[0013] Preferably, a circular hole is provided on the top of the bracket, and the valve stem is rotatably connected in the circular hole.

[0014] Preferably, flanges are integrally formed on both sides of the valve seat.

[0015] Preferably, the valve core is made of stainless steel.

[0016] Preferably, an encoder is provided in the servo motor.

[0017] In the utility model, the intelligent servo proportional control valve described is controlled by the debugging personnel through the human-machine interface to start and stop and set the valve position opening degree. After the servo driver is started on the human-machine interface, the servo motor is in a standby state, and then the motor running speed and the target rotation angle are set on the industrial touch screen. The servo motor starts to rotate and drives the reducer to run. The output shaft of the reducer drives the valve stem to rotate together through the linkage. The opening degree of the valve core is opened or closed to control the air flow through the equal percentage valve core;

[0018] In the utility model, the intelligent servo proportional control valve has improved the adjustment performance through the valve core made of stainless steel material, and the servo positioning control system controls the adjustment cycle and accuracy, and the accuracy is much higher than that of the butterfly valve; it has good equal percentage, wide adjustment range and high resolution, and the servo motor has its own rotary encoder, which can obtain the current valve body rotation position in real time, and does not need to be equipped with expensive positioners and other accessories like diaphragm valves, which can effectively reduce costs, and the human-machine interface can operate and monitor the valve body status, and the system functions are highly integrated.

[0019] In the utility model, the intelligent servo proportional control valve has superior advantages in the current natural gas combustion control, can solve the precise proportioning control of the air-fuel ratio, achieve the best combustion state, save energy, and meet the regulation and control requirements of the heat treatment industry for different atmospheres. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a three-dimensional structural schematic diagram of an intelligent servo proportional control valve proposed by the utility model;

[0021] Figure 2 This is a cross-sectional structural schematic diagram of an intelligent servo proportional control valve proposed by the utility model;

[0022] Figure 3 This is a system block diagram of an intelligent servo proportional control valve proposed by the utility model.

[0023] In the figure: 1. servo motor; 2. precision reducer; 3. coupling; 4. valve seat; 401. valve core; 402. valve stem; 403. sealing bearing; 404. sealing ring; 5. support cylinder; 6. gasket; 7. bracket; 8. mounting cylinder; 9. servo drive; 10. PLC system; 11. industrial touch screen. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Reference Figure 1-3 , an intelligent servo proportional control valve, comprising:

[0026] The double-headed ball valve body comprises a valve core 401 and a valve seat 4. The valve core 401 is rotatably mounted in the valve seat 4. The top of the valve core 401 is fixedly connected with a valve stem 402.

[0027] The servo positioning control system includes a servo driver 9, a servo motor 1 and a precision reducer 2. The servo driver 9 is electrically connected to the servo motor 1. The output end of the servo motor 1 is connected to the precision reducer 2. A coupling 3 is provided between the valve stem 402 and the output end of the precision reducer 2.

[0028] The human-machine interface includes a PLC system 10 and an industrial touch screen 11 . The PLC system 10 is connected to the industrial touch screen 11 and the servo driver 9 .

[0029] In this embodiment, the servo motor 1 is fixedly installed on the top of the precision reducer 2, and a mounting cylinder 8 is fixedly installed on the bottom of the precision reducer 2, a bracket 7 is fixedly installed on the bottom of the mounting cylinder 8, a gasket 6 is fixedly installed on the bottom of the bracket 7, and a support cylinder 5 is fixedly connected between the gasket 6 and the valve seat 4.

[0030] In this embodiment, a sealing ring 404 is fixedly installed in the valve seat 4 , and the sealing ring 404 is movably sealed against the outer side of the valve core 401 to prevent leakage at the connection between the valve seat 4 and the valve core 401 .

[0031] In this embodiment, a sealing bearing 403 is fixedly installed on the top of the valve seat 4 . The sealing bearing 403 is arranged on the outside of the valve stem 402 to seal the valve seat 4 .

[0032] In this embodiment, a round hole is opened on the top of the bracket 7, and the valve stem 402 is rotatably connected in the round hole to rotate and position the valve stem 402.

[0033] In this embodiment, flanges are integrally formed on both sides of the valve seat 4 .

[0034] In this embodiment, the valve core 401 is made of stainless steel. The double-headed ball valve body has the advantages of corrosion resistance, good sealing, simple operation, low flow resistance, wide applicability, convenient maintenance, high temperature and high pressure resistance, and long service life. The double-headed ball valve body can be used to control various corrosive media, and its service life is usually long, which reduces the replacement frequency and reduces the long-term operating cost.

[0035] In this embodiment, an encoder is provided in the servo motor 1 so that the current rotation position of the valve core 401 can be obtained in real time.

[0036] In this embodiment, when in use, the debugging personnel control the servo driver 9 by starting and stopping and setting the valve position opening through the human-machine interface. After the servo driver 9 is started on the human-machine interface, the servo motor 1 is in a standby state, and then the motor running speed and the target rotation angle are set in the industrial touch screen 11. The servo motor 1 starts to rotate and drives the reducer to run. The output shaft of the reducer drives the valve stem 402 to rotate together through the linkage. The opening degree of the valve core 401 is opened or closed to control the air flow through the equal percentage valve core 401.

[0037] The valve core 401 made of stainless steel material improves the adjustment performance. The servo positioning control system controls the adjustment cycle and accuracy, and the accuracy is much higher than that of the butterfly valve. It has good equal percentage, wide adjustment range and high resolution. At the same time, the servo motor 1 has a rotary encoder, which can obtain the current valve body rotation position in real time. It does not need to be equipped with expensive positioners and other accessories like diaphragm valves, which can effectively reduce costs. The human-machine interface can operate and monitor the valve body status, and the system functions are highly integrated.

[0038] The above is a detailed introduction to an intelligent servo proportional control valve provided by the utility model. This article uses specific embodiments to explain the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. An intelligent servo proportional control valve, characterized in that: include: A double-headed ball valve body, comprising a valve core (401) and a valve seat (4), wherein the valve core (401) is rotatably mounted in the valve seat (4), and a valve stem (402) is fixedly connected to the top of the valve core (401); A servo positioning control system comprises a servo driver (9), a servo motor (1) and a precision reducer (2), wherein the servo driver (9) is electrically connected to the servo motor (1), an output end of the servo motor (1) is connected to the precision reducer (2), and a coupling (3) is provided between the valve stem (402) and the output end of the precision reducer (2); The human-machine interface comprises a PLC system (10) and an industrial touch screen (11), wherein the PLC system (10) is connected to the industrial touch screen (11) and a servo driver (9).

2. The intelligent servo proportional control valve according to claim 1, characterized in that: The servo motor (1) is fixedly mounted on the top of the precision reducer (2), and a mounting tube (8) is fixedly mounted on the bottom of the precision reducer (2), a bracket (7) is fixedly mounted on the bottom of the mounting tube (8), a cushion block (6) is fixedly mounted on the bottom of the bracket (7), and a support tube (5) is fixedly connected between the cushion block (6) and the valve seat (4).

3. The intelligent servo proportional control valve according to claim 1, characterized in that: A sealing ring (404) is fixedly installed inside the valve seat (4), and the sealing ring (404) is movably sealed against the outer side of the valve core (401).

4. The intelligent servo proportional control valve according to claim 1, characterized in that: A sealing bearing (403) is fixedly mounted on the top of the valve seat (4), and the sealing bearing (403) is arranged on the outside of the valve stem (402).

5. The intelligent servo proportional control valve according to claim 2, characterized in that: A circular hole is provided on the top of the bracket (7), and the valve stem (402) is rotatably connected in the circular hole.

6. The intelligent servo proportional control valve according to claim 1, characterized in that: Flanges are integrally formed on both sides of the valve seat (4).

7. The intelligent servo proportional control valve according to claim 1, characterized in that: The valve core (401) is made of stainless steel.

8. The intelligent servo proportional control valve according to claim 1, characterized in that: An encoder is arranged inside the servo motor (1).

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