Intelligent control butterfly valve driven in direct drive mode

Abstract

The utility model belongs to the technical field of vacuum system fluid closure pressure control, and particularly relates to an intelligent control butterfly valve driven in a direct drive mode, which comprises a valve main body, a neck connecting rubber sleeve, a coupler, a driving mechanism and a circuit control mechanism, the valve main body comprises a valve body, a valve core and a valve plate, the valve body is fixedly connected with the valve core through a bearing, and the valve plate is fixedly connected with the valve core; the driving mechanism comprises a speed reducer; and one end of a coupler is connected with the bearing through the output shaft, and the other end of the coupler is arranged at the torque output end of the speed reducer in a sleeving manner. The speed reducer and the bearing are coaxially connected through the coupler and the output shaft, so that when the intelligent control butterfly valve is in a working state, the bearing and the speed reducer are always kept coaxial, a gap between the bearing and the speed reducer is greatly reduced, then kinetic energy loss of a driving mechanism and friction between the shaft and the valve seat are reduced, and finally the pressure control performance of the valve is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fluid cutoff pressure control in vacuum systems, and in particular relates to an intelligent control butterfly valve driven in a direct drive manner. Background Art

[0002] The intelligent valve consists of a stainless steel valve seat, valve core, valve stem, limit device, thermally insulated plastic connector, a servo motor with a gear reducer, and a control circuit. During operation, the host computer transmits the pressure data required for the valve to the valve communication module. The communication module processes the data and transmits the required information to the control algorithm core. The main control algorithm then transmits the action signal to the motor drive module, rotating the servo motor, which in turn drives the valve core and valve disc, thus cutting off the flow on both sides of the pipeline and achieving precise control of the upstream and downstream pressure difference.

[0003] Nowadays, in addition to imported butterfly valves, electric butterfly valves and pneumatic butterfly valves occupy the main market in China. In actual applications, since the vacuum environment is very sensitive to the pressure control time, and since the existing valves need to open and close the valve through deflection motion, their kinetic energy loss is large, the concentricity and coaxiality are poor, and there is friction between the shaft and the valve seat, which directly affects the poor pressure control performance of the valve.

[0004] Therefore, it is urgent to improve the existing valves to solve the technical problems of large kinetic energy loss, poor concentricity and coaxiality, friction between the shaft and the valve seat, and poor valve pressure control performance. Utility Model Content

[0005] The purpose of the utility model is to provide an intelligent butterfly valve driven by direct drive, so as to solve the technical problems of existing valves such as large kinetic energy loss, poor concentricity and coaxiality, friction between the shaft and the valve seat, and poor valve pressure control performance.

[0006] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows:

[0007] A direct-drive intelligent butterfly valve comprises a valve body, a neck connection rubber sleeve, a coupling, a drive mechanism, and a circuit control mechanism; the valve body comprises a valve body, a valve core, and a valve plate, the valve body and the valve core being fixedly connected via a bearing, and the valve plate being fixedly connected to the valve core; the drive mechanism comprises a reducer;

[0008] It also includes an output shaft, one end of the coupling 8 is connected to the bearing through the output shaft, and the other end is sleeved on the torque output end of the reducer.

[0009] Preferably, the driving mechanism includes a servo motor, a position sensor, a motor limit device, a fixing flange, a housing top plate and a reducer. The servo motor and the reducer are fixedly connected by screws. The position sensor is installed on the output axis of the driving mechanism and is fixedly connected to the motor shaft of the servo motor. The motor limit device is fixedly connected to the motor shaft by screws, and the fixing flange is fixedly connected to the housing top plate and the servo motor by screws. The inner ring of the fixing flange is provided with a groove that matches the cam of the motor limit device.

[0010] Preferably, it also includes a neck connecting rubber sleeve and a sealing ring, and the valve body is provided with a first boss for installing a bearing and a threaded hole for installing a neck connecting rubber sleeve; a second boss for installing a positioning valve core and a sealing ring is provided at the center position inside the valve body; grooves for installing bearings and sealing rings are provided at both ends of the valve core.

[0011] Preferably, at least two through holes are provided on the valve core for installing screws to fix the valve plate, and the valve plate is provided with two threaded holes for fastening to the valve core, and the axes of the two threaded holes are parallel to each other; and a sealing ring groove is provided on the outer circle of the valve plate for installing a sealing ring.

[0012] Preferably, the sealing ring is made of perfluoroether material.

[0013] Preferably, two grooves are formed on the outer circle of the neck connecting rubber sleeve, and countersunk holes and threaded blind holes are formed on both end faces for connecting the valve seat and the top plate of the shell. The raw material of the neck connecting rubber sleeve is PA66 heat-insulating and wear-resistant plastic.

[0014] Preferably, the circuit control mechanism includes a communication board, an algorithm control board, a motor drive board, a connection and fixing board, and an external wiring interface board;

[0015] Both ends of the communication board, algorithm control board, and motor drive board are provided with European sockets connected to the servo / stepper motor. The external wiring interface board has three European sockets for connecting to the communication board, algorithm control board (18), and motor drive board. The external wiring interface board is provided with at least four holes fixed to the panel shell.

[0016] Preferably, it also includes a shell mechanism, which includes a shell top plate, a panel shell and a main shell. A through groove is opened inside the main shell, and threaded holes are provided at both ends for connecting the shell top plate and the panel shell. The panel shell is provided with a countersunk hole and an external circuit slot. A countersunk hole is opened directly below the shell top plate, and a circular boss is provided directly above it for connecting to the neck connecting rubber sleeve.

[0017] Preferably, the shell structure is made of aluminum.

[0018] The beneficial effects of the utility model include:

[0019] The utility model provides a direct-drive intelligent butterfly valve, comprising a valve body, a neck connecting rubber sleeve, a coupling, a driving mechanism and a circuit control mechanism; the valve body comprises a valve body, a valve core and a valve plate, the valve body and the valve core are fixedly connected by a bearing, and the valve plate is fixedly connected to the valve core; the driving mechanism comprises a reducer; and an output shaft is also included, one end of the coupling is connected to the bearing via the output shaft, and the other end is sleeved on the torque output end of the reducer. The reducer and the bearing are coaxially connected via the coupling and the output shaft. When the intelligent butterfly valve is in working condition, the bearing and the reducer always remain coaxial, greatly reducing the gap between the bearing and the reducer, thereby reducing the kinetic energy loss of the driving mechanism and the friction between the shaft and the valve seat, and ultimately improving the pressure control performance of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of the intelligently controlled butterfly valve driven in a direct drive manner according to the present invention.

[0021] Figure 2 This is a cross-sectional view of the intelligently controlled butterfly valve driven in a direct drive manner according to the present invention.

[0022] Figure numerals: 1 valve body; 2 valve core; 3 bearing; 4 valve plate; 6 neck connecting rubber sleeve; 7 sealing ring; 8 coupling; 10 servo motor; 11 screw; 12 housing top plate; 13 position sensor; 14 motor limit device; 15 fixing flange; 16 reducer; 17 communication board; 18 algorithm control board; 19 motor drive board; 20 connection fixing board; 21 external wiring interface board; 22 panel housing; 23 main housing. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.

[0024] The following is combined with Figure 1 and Figure 2 The utility model is further described in detail:

[0025] Example 1

[0026] See attached Figure 1 As shown, an intelligent butterfly valve driven in a direct drive manner includes a valve body, a neck connecting rubber sleeve 6, a coupling 8, a driving mechanism and a circuit control mechanism; the valve body includes a valve body 1, a valve core 2 and a valve plate 4, the valve body 1 and the valve core 2 are fixedly connected by a bearing 3, and the valve plate 4 is fixedly connected to the valve core 2; the driving mechanism includes a reducer 16 and an output shaft, one end of the coupling 8 is connected to the bearing 3 through the output shaft, and the other end is sleeved on the torque output end of the reducer 16.

[0027] The intelligent control butterfly valve provided in this application realizes that the bearing on the output shaft sleeve is concentric and coaxial with the valve body, and the bearing and the torque output end of the reducer are concentric and coaxial through the coupling, which greatly reduces the gap between the bearing and the reducer, thereby reducing the kinetic energy loss of the drive mechanism and the friction between the shaft and the valve seat, and ultimately improving the pressure control performance of the valve.

[0028] The driving mechanism of the intelligent control butterfly valve includes a servo motor 10, a position sensor 13, a motor limit device 14, a fixing flange 15, a housing top plate 12 and a reducer 16. The servo motor 10 and the reducer 16 are fixedly connected by screws 11. The position sensor 13 is installed on the output axis of the driving mechanism and is fixedly connected to the motor shaft of the servo motor 10; the motor limit device 14 is fixedly connected to the motor shaft by screws 11, and the fixing flange 15 is fixedly connected to the housing top plate 12 and the servo motor 10 by screws 11. The inner ring of the fixing flange 15 is provided with a groove that matches the cam of the motor limit device 14.

[0029] The servo motor 10 of the driving mechanism is connected to the valve core 2 through a coupling 8. A limiting device that interlocks with the actual notch of the housing mechanism is installed between the servo motor 10 through the coupling 8. The servo motor 10 is then fixed to the housing mechanism in a flange manner.

[0030] The intelligent butterfly valve also includes a neck connection rubber sleeve 6 and a sealing ring 7. The valve body 1 is provided with a first boss for mounting a bearing 3 and a threaded hole for mounting the neck connection rubber sleeve 6. A second boss for mounting a positioning valve core 2 and a sealing ring 7 is provided at the center of the valve body 1. Grooves for mounting the bearing 3 and the sealing ring 7 are provided at both ends of the valve core 2. The valve core 2 is provided with at least two through holes for mounting screws to fix the valve plate 4, and the valve plate 4 is provided with two threaded holes for fastening to the valve core 2, with the axes of the two threaded holes parallel to each other. A sealing ring groove for mounting a sealing ring is provided on the outer circle of the valve plate 4. The sealing ring 7 is made of perfluoroether material.

[0031] Example 2

[0032] Based on Example 1, two grooves are opened on the outer circle of the neck connecting rubber sleeve 6, and countersunk holes and threaded blind holes for connecting the valve seat 1 and the shell top plate 12 are opened on both end faces. The raw material of the neck connecting rubber sleeve 6 is PA66 heat-insulating and wear-resistant plastic.

[0033] The circuit control mechanism includes a communication board 17, an algorithm control board 18, a motor drive board 19, a connection and fixing board 20, and an external wiring interface board 21. Each end of the communication board 17, the algorithm control board 18, and the motor drive board 19 is provided with a European-style socket for connecting to the servo / stepper motor 10. The external wiring interface board 21 has three European-style sockets for connecting to the communication board 17, the algorithm control board 18, and the motor drive board 19. The external wiring interface board 21 is provided with at least four holes for fixing to the panel housing 22.

[0034] Example 3

[0035] On the basis of Example 1 or Example 2, the circuit control mechanism adds a magnetic position encoder between the servo motor 10 and the coupling 8 to realize position data transmission, or installs a magnetic position encoder on the rear end shaft of the servo motor 10 to realize position data transmission, and the communication board 17, the algorithm control board 18, and the motor drive board 19 are respectively inserted around the servo motor 10 and fixed by the shell mechanism.

[0036] The intelligent butterfly valve also includes a housing structure, which includes a housing top plate 12, a panel housing 22, and a main housing 23. The main housing 23 has a through slot and threaded holes at both ends for connecting the housing top plate 12 and the panel housing 22. The panel housing 22 has a countersunk hole and an external wiring slot. The housing top plate 12 has a countersunk hole directly below it and a circular boss directly above it for connecting to the neck connecting rubber sleeve 6. The housing structure is made of aluminum to ensure heat dissipation from the control part and to provide strength to protect the circuit control mechanism during use.

[0037] In summary, the utility model provides an intelligent butterfly valve driven in a direct drive manner, including a valve body, a neck connecting rubber sleeve, a coupling, a driving mechanism and a circuit control mechanism; the valve body includes a valve body, a valve core and a valve plate, the valve body and the valve core are fixedly connected by a bearing, and the valve plate is fixedly connected to the valve core; the driving mechanism includes a reducer; and also includes an output shaft, one end of the coupling is connected to the bearing through the output shaft, and the other end is sleeved on the torque output end of the reducer. The reducer and the bearing are coaxially connected through the coupling and the output shaft. When the intelligent butterfly valve is in working condition, the bearing and the reducer always remain coaxial, greatly reducing the gap between the bearing and the reducer, thereby reducing the kinetic energy loss of the driving mechanism and the friction between the shaft and the valve seat, and ultimately improving the pressure control performance of the valve.

[0038] The above-described embodiments merely illustrate specific implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of protection of the present application. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the technical concept of the present application, all of which fall within the scope of protection of the present application.

Claims

1. A direct-drive intelligent butterfly valve, characterized in that: The valve comprises a valve body, a neck connecting rubber sleeve (6), a coupling (8), a driving mechanism and a circuit control mechanism; the valve body comprises a valve body (1), a valve core (2) and a valve plate (4); the valve body (1) and the valve core (2) are fixedly connected via a bearing (3); the valve plate (4) and the valve core (2) are fixedly connected; the driving mechanism comprises a reducer (16); It also includes an output shaft, one end of the coupling (8) is connected to the bearing (3) through the output shaft, and the other end is sleeved on the torque output end of the reducer (16).

2. The intelligent butterfly valve driven by direct drive according to claim 1, characterized in that: The driving mechanism comprises a servo motor (10), a position sensor (13), a motor limiting device (14), a fixing flange (15), a housing top plate (12) and a reducer (16), wherein the servo motor (10) and the reducer (16) are fixedly connected by screws, the position sensor (13) is mounted on the output axis of the driving mechanism and is fixedly connected to the motor shaft of the servo motor (10); the motor limiting device (14) is fixedly connected to the motor shaft by screws, the fixing flange (15) is fixedly connected to the housing top plate (12) and the servo motor (10) by screws, and the inner ring of the fixing flange (15) is provided with a groove that matches the cam of the motor limiting device (14).

3. The intelligent butterfly valve driven by direct drive according to claim 2, characterized in that: It also includes a neck connecting rubber sleeve (6) and a sealing ring (7); the valve body (1) is provided with a first boss for installing a bearing (3) and a threaded hole for installing the neck connecting rubber sleeve (6); a second boss for installing a positioning valve core (2) and a sealing ring (7) is provided at the center position inside the valve body (1); and grooves for installing the bearing (3) and the sealing ring (7) are provided at both ends of the valve core (2).

4. The intelligent butterfly valve driven by direct drive according to claim 3, characterized in that: The valve core (2) is provided with at least two through holes for installing screws to fix the valve plate (4), and the valve plate (4) is provided with two threaded holes for fastening to the valve core (2), and the axes of the two threaded holes are parallel to each other; and the outer circle of the valve plate (4) is provided with a sealing ring groove for installing a sealing ring.

5. The intelligent butterfly valve driven by direct drive according to claim 4, characterized in that: The sealing ring (7) is a sealing ring made of perfluoroether material.

6. The intelligent butterfly valve driven by direct drive according to claim 3, characterized in that: The outer circle of the neck connecting rubber sleeve (6) is provided with two grooves, and the two end faces are provided with countersunk holes and threaded blind holes for connecting the valve body (1) and the shell top plate (12). The raw material of the neck connecting rubber sleeve (6) is PA66 heat-insulating and wear-resistant plastic.

7. The intelligent butterfly valve driven by direct drive according to claim 1, characterized in that: The circuit control mechanism includes a communication board (17), an algorithm control board (18), a motor drive board (19), a connection and fixing board (20) and an external wiring interface board (21); Both ends of the communication board (17), the algorithm control board (18), and the motor drive board (19) are provided with European-style sockets connected to the servo / stepping motor (10); the external wiring interface board (21) has three European-style sockets for connecting to the communication board (17), the algorithm control board (18), and the motor drive board (19); and the external wiring interface board (21) is provided with at least four holes fixed to the panel housing (22).

8. The intelligent butterfly valve driven by direct drive according to claim 1, characterized in that: The invention also includes a shell mechanism, which includes a shell top plate (12), a panel shell (22) and a main shell (23). A through groove is provided inside the main shell (23), and threaded holes for connecting the shell top plate (12) and the panel shell (22) are provided at both ends. The panel shell (22) is provided with a countersunk hole and an external circuit slot. A countersunk hole is provided directly below the shell top plate (12), and a circular boss for connecting to the neck connecting rubber sleeve (6) is provided directly above.

9. The intelligent butterfly valve driven by direct drive according to claim 8, characterized in that: The material of the housing structure is aluminum.

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