An electric speed control valve

Abstract

This utility model discloses an electric speed regulating valve, including a valve body and two butterfly plate assemblies. Two guide grooves are provided on both the left and right sides of the valve body's inner wall. One end of each guide groove extends to one end of the valve body, and the other end is provided with a rotating groove. Each butterfly plate assembly includes a rotating shaft, a butterfly plate body, a pin, and an elastic body. The rotating shaft extends laterally, and the butterfly plate body is fixedly connected to the rotating shaft. The pin is axially slidably connected to both ends of the rotating shaft and circumferentially fixed. The elastic body applies an axial outward force to the pin. The pins at both ends of the rotating shaft slide into the rotating grooves through the guide grooves on the left and right sides, respectively. The rotating shafts of the two butterfly plate assemblies are connected by a transmission. The speed regulating valve also includes a motor. A mounting hole is provided on the outer side of the valve body, extending through one of the rotating grooves. The motor housing is sealed and mounted on the mounting hole, and the motor's output shaft is connected by a transmission to the corresponding pin. This utility model proposes an electric speed regulating valve that reduces the number of mounting holes and improves the airtightness of the speed regulating valve.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to an electric speed regulating valve. Background Technology

[0002] Existing fresh air system speed control valves come in two types: manual and electric. Manual speed control valves are relatively cumbersome to adjust, while electric speed control valves consist of a valve body and two semi-circular discs that are rotatably installed in the valve body, as well as a motor that drives the discs to rotate. In existing electric speed control valves, both discs are installed in the valve body by a pin. Since the pin needs to pass through the valve body to connect with the discs, the pin leaves a mounting hole on the valve body. Two pins leave two mounting holes on the valve body. Too many mounting holes will increase the possibility of air leakage in the valve body and affect the airtightness of the speed control valve. Utility Model Content

[0003] To address the shortcomings of existing speed control valves, which have a large number of mounting holes and thus affect their airtightness, this invention proposes an electric speed control valve that reduces the number of mounting holes and improves the airtightness of the speed control valve.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An electric speed regulating valve includes a valve body and two butterfly plate assemblies. Two guide grooves are provided on the left and right sides of the inner wall of the valve body. One end of the guide groove extends through to one end of the valve body, and the other end of the guide groove is provided with a rotating groove.

[0006] The butterfly plate assembly includes a rotating shaft, a butterfly plate body, pins, and an elastic body. The rotating shaft extends left and right. The butterfly plate body is fixedly connected to the rotating shaft. The pins are axially slidably connected to both ends of the rotating shaft and are circumferentially fixed. The elastic body applies an axial outward force to the pins. The pins at both ends of the rotating shaft slide into the rotating grooves through guide grooves on the left and right sides, respectively. The rotating shafts of the two butterfly plate assemblies are connected by transmission. The speed control valve also includes a motor. A mounting hole is provided on the outside of the valve body. The mounting hole extends through to one of the rotating grooves. The motor housing is sealed and mounted on the mounting hole. The output shaft of the motor is connected by transmission to the corresponding pin.

[0007] With the above settings, firstly, the butterfly plate assembly is installed by sliding in, making installation more convenient; secondly, there is only one mounting hole on the surface of the valve body, reducing the number of mounting holes, decreasing the possibility of air leakage, and improving the airtightness of the speed control valve.

[0008] Furthermore, the butterfly plate assembly also includes a friction layer wrapped around the pivot, wherein the friction layer of one butterfly plate assembly abuts against the friction layer of the other butterfly plate assembly.

[0009] With the above setup, the two butterfly plate assemblies are connected by frictional transmission between their rotating shafts, resulting in a simpler structure.

[0010] Furthermore, the two ends of the rotating shaft are provided with sliding grooves, the cross-section of which is non-circular. One end of the pin is slidably connected in the sliding groove, and the other end of the pin has a circular cross-section and is rotatably connected in the rotating groove.

[0011] The above settings ensure that the pin and the rotating shaft are circumferentially fixed.

[0012] Furthermore, the elastomer is set as a spring, which is installed in the slide groove. One end of the spring is connected to the pin, and the other end of the spring is connected to the bottom of the slide groove.

[0013] Furthermore, a transmission groove is provided at the end of the pin, and a transmission key is fixedly connected to the end of the motor's output shaft, with the transmission key embedded in the transmission groove.

[0014] Furthermore, the motor is configured as a servo motor.

[0015] The above settings improve the rotational accuracy of the motor.

[0016] Furthermore, the ends of the guide groove are chamfered.

[0017] With the above settings, the end of the pin can easily slide into the guide groove. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the speed control valve in an embodiment.

[0019] Figure 2 for Figure 1 Top view.

[0020] Figure 3 for Figure 2 AA sectional view.

[0021] Figure 4 for Figure 2 BB cross-sectional view.

[0022] Figure 5 for Figure 2 CC section view.

[0023] Figure 6 This is a diagram illustrating the installation process of the butterfly plate assembly in an embodiment.

[0024] Figure 7 This is a schematic diagram of the butterfly plate assembly after rotation, as shown in the embodiment. Detailed Implementation

[0025] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0026] like Figures 1 to 7An electric speed regulating valve includes a valve body 3 and two butterfly plate assemblies. Two guide grooves 4 are provided on the left and right sides of the inner wall of the valve body 3. One end of the guide groove 4 extends through to one end of the valve body 3, and the other end of the guide groove 4 is provided with a rotating groove 5.

[0027] The butterfly plate assembly includes a rotating shaft 6, a butterfly plate body 7, a pin 8, and an elastic body 9. The rotating shaft 6 extends left and right. The butterfly plate body 7 is fixedly connected to the rotating shaft 6. The pin 8 is axially slidably connected to both ends of the rotating shaft 6 and circumferentially fixed. The elastic body 9 applies an axial outward force to the pin 8. The pins 8 at both ends of the rotating shaft 6 slide into the rotating groove 5 through the guide grooves 4 on the left and right sides, respectively. The rotating shafts 6 of the two butterfly plate assemblies are connected by transmission.

[0028] The speed control valve also includes a motor 10. A mounting hole 11 is provided on the outside of the valve body 3. The mounting hole 11 extends through to one of the rotating slots 5. The housing 101 of the motor 10 is sealed and installed on the mounting hole 11. The output shaft 102 of the motor 10 is connected to the corresponding pin 8 for transmission.

[0029] With the above settings, firstly, the butterfly plate assembly is installed by sliding in, making installation more convenient; secondly, there is only one mounting hole 11 on the surface of the valve body 3, reducing the number of mounting holes 11, decreasing the possibility of air leakage, and improving the airtightness of the speed control valve.

[0030] The valve body 3 of this application has a circular cross-section. The extension direction of the guide groove 4 is parallel to the axis of the valve body 3. The width of the guide groove 4 is equal to the outer diameter of the outer end of the pin 8. The pin 8 and the rotating shaft 6 cannot rotate relative to each other. The pin 8 can only extend and retract axially at the end of the rotating shaft 6. The elastic body 9 provides an axial outward force to the pin 8. When installing the butterfly plate assembly, the pin 8 at the left end of the butterfly plate assembly is in the guide groove 4 on the left side, and the pin 8 at the right end of the butterfly plate assembly is in the guide groove 4 on the right side. The butterfly plate assembly slides downwards, as... Figure 6 When the pin 8 moves to the rotating groove 5, the elastic body 9 drives the pin 8 to move axially outward, causing the pin 8 to engage in the rotating groove 5. Figure 4 The rotating groove 5 has a circular cross-section, and the outer end of the pin 8 has a circular cross-section, which matches the rotating groove 5, improving the rotational stability of the butterfly plate assembly. The speed control valve of this application is equipped with two butterfly plate assemblies, such as... Figure 2One butterfly plate assembly has its left pin 8 engaged in one of the left rotating slots 5, and its right pin 8 engaged in one of the right rotating slots 5. The other butterfly plate assembly has its left pin 8 engaged in another left rotating slot 5, and its right pin 8 engaged in another right rotating slot 5. After installation, the rotating shafts 6 of the two butterfly plate assemblies are parallel to each other, and the butterfly plate bodies 7 of the two butterfly plate assemblies are arranged in a mirror image. The motor 10 is installed in the mounting hole 11. The housing 101 of the motor 10 is sealed to the outside of the valve body 3, blocking the mounting hole 11. The rotating shaft 6 of the motor 10 is connected to the corresponding pin 8 through the mounting hole 11. After the motor 10 runs, it drives one of the butterfly plate bodies 7 to rotate via the rotating shaft 6, pin 8, and rotating shaft 6. Because the rotating shafts 6 of the two butterfly plate assemblies are connected, when one rotating shaft 6 rotates, the rotating shaft 6 of the other butterfly plate assembly rotates synchronously in the opposite direction. Figure 7 When the two butterfly plate assemblies close upwards, the valve body 3 is opened. The greater the upward movement of the butterfly plate body 7 of the two butterfly plate assemblies, the greater the flow rate of the speed control valve. Conversely, the closer the butterfly plate body 7 of the two butterfly plate assemblies is to the horizontal, the smaller the flow rate of the speed control valve.

[0031] As one implementation, the butterfly plate assembly also includes a friction layer 12 wrapped around the pivot 6, wherein the friction layer 12 of one butterfly plate assembly abuts against the friction layer 12 of the other butterfly plate assembly.

[0032] With the above setup, the two butterfly plate assemblies are connected by frictional transmission between their rotating shafts 6, resulting in a simpler structure.

[0033] The friction layer 12 of this application can be made of rubber, which has good elasticity and friction. When the friction layer 12 on the surface of one rotating shaft 6 is pressed against the friction layer 12 on the surface of the other rotating shaft 6, there is a large friction between the two rotating shafts 6. When the motor 10 drives one rotating shaft 6 to rotate, the other rotating shaft 6 rotates synchronously in the opposite direction.

[0034] As one implementation, the rotating shaft 6 is provided with grooves 13 at both ends. The cross-section of the grooves 13 is non-circular. One end of the pin 8 is slidably connected in the groove 13, and the other end of the pin 8 has a circular cross-section and is rotatably connected in the rotating groove 5.

[0035] The above settings ensure that the pin 8 and the rotating shaft 6 are circumferentially fixed.

[0036] Specifically, the cross-section of the slide groove 13 is square, and the inner end cross-section of the pin 8 is square, which is adapted to the slide groove 13. The pin 8 can move axially in the slide groove 13 without relative rotation with the rotating shaft 6, thus achieving the function of transmitting torque.

[0037] As one implementation, the elastic body 9 is set as a spring, which is installed in the slide groove 13. One end of the spring is connected to the pin 8, and the other end of the spring is connected to the bottom of the slide groove 13.

[0038] As one implementation, the end of the pin 8 is provided with a transmission groove 14, and the end of the output shaft 102 of the motor 10 is fixedly connected with a transmission key 15, which is embedded in the transmission groove 14.

[0039] Specifically, the cross-section of the transmission groove 14 is square, and the transmission key 15 is adapted to the transmission groove 14. After the transmission key 15 is inserted into the transmission groove 14, the motor 10 starts and drives the pin 8 to rotate through the transmission key 15 and the transmission groove 14.

[0040] As one implementation method, motor 10 is configured as a servo motor.

[0041] The above settings improve the rotational accuracy of motor 10.

[0042] As one implementation method, the end of the guide groove 4 is provided with a chamfer 16.

[0043] With the above settings, the end of the pin 8 can easily slide into the guide groove 4.

[0044] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An electric motor speed regulating valve characterized by, It includes a valve body and two butterfly plate assemblies. Two guide grooves are provided on the left and right sides of the inner wall of the valve body. One end of the guide groove extends through to one end of the valve body, and the other end of the guide groove is provided with a rotating groove. The butterfly plate assembly includes a rotating shaft, a butterfly plate body, a pin, and an elastic body. The rotating shaft extends left and right. The butterfly plate body is fixedly connected to the rotating shaft. The pin is axially slidably connected to both ends of the rotating shaft and is circumferentially fixed. The elastic body applies an axial outward force to the pin. The pins at both ends of the rotating shaft slide into the rotating groove through guide grooves on the left and right sides, respectively. The rotating shafts of the two butterfly plate assemblies are connected by transmission. The speed control valve also includes a motor. A mounting hole is provided on the outside of the valve body. The mounting hole extends through one of the rotating slots. The motor housing is sealed and mounted on the mounting hole. The output shaft of the motor is connected to the corresponding pin shaft for transmission.

2. The electric modulating control valve according to claim 1, wherein The butterfly plate assembly also includes a friction layer wrapped around the rotating shaft, wherein the friction layer of one butterfly plate assembly abuts against the friction layer of the other butterfly plate assembly.

3. The electrically powered metering valve of claim 1 wherein, The rotating shaft has grooves at both ends, and the cross-section of the grooves is non-circular. One end of the pin is slidably connected in the groove, and the other end of the pin has a circular cross-section and is rotatably connected in the rotating groove.

4. An electrically powered metering valve according to claim 3, wherein The elastic body is configured as a spring, which is installed in a groove. One end of the spring is connected to a pin, and the other end of the spring is connected to the bottom of the groove.

5. An electrically powered metering valve according to claim 4, wherein The end of the pin is provided with a transmission groove, and the end of the output shaft of the motor is fixedly connected with a transmission key, which is embedded in the transmission groove.

6. The motor operated control valve of claim 1 wherein, The motor is configured as a servo motor.

7. The motor operated control valve of claim 1 wherein, The end of the guide groove is chamfered.

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