Transmission mechanism for valve, regulating valve and water dispenser

Abstract

The utility model discloses a transmission mechanism for a valve, which comprises a shell, a valve plate and a transmission element, the shell comprises a base and a motor support, the valve plate comprises a static plate and a movable plate, and the transmission element comprises a rotating shaft and a transmission shaft. The transmission shaft drives the movable piece to rotate through the rotating shaft, the movable piece rotates relative to the static piece, the through-flow sectional area of the fluid channel is changed, and adjustment of fluid is achieved. Specifically, one end of the transmission shaft is in transmission connection with the driver, and the other end of the transmission shaft penetrates through the motor support, the rotating shaft, the movable piece and the static piece and then is connected with the base, so that coaxial rotation of the movable piece and the transmission shaft is ensured, repeated positioning accuracy is high, and the phenomenon of out-of-step or jamming caused by slight distortion and blocking of the transmission shaft in the transmission process is effectively avoided. And the transmission reliability of the transmission mechanism for the valve is improved. The utility model further provides an adjusting valve comprising the transmission mechanism for the valve. Meanwhile, the utility model provides a water dispenser which comprises the regulating valve.

Description

Technical Field

[0001] The utility model relates to the technical field of drinking water equipment and its peripheral supporting facilities, in particular to a transmission mechanism for a valve, a regulating valve and a water dispenser. Background Art

[0002] The temperature regulating valve of a water dispenser is a device that can control the water temperature. It can automatically adjust according to different ambient temperatures to ensure the stability of the water temperature of the water dispenser.

[0003] In the prior art, the transmission mode of the temperature regulating valve is that the rotating shaft of a stepping motor is connected to an eccentric cam through a rigid connecting piece (neither a coupling nor a universal joint). The eccentric cam of the rigid connecting piece is connected to the rotating shaft and then transmits kinetic energy to the moving piece of the valve disc. The valve disc rotates in a non-fixed state. The existing transmission mechanism cannot ensure the concentricity of the transmission parts. During the transmission process, several connected transmission parts of the stepping motor will be slightly distorted, and the output shaft of the stepping motor is easily blocked, resulting in out-of-step or jamming. Since only one side of the valve disc contacts the rotating shaft and the other side has no positioning center, it will deviate from the center irregularly during rotation, resulting in poor repeat positioning accuracy, inaccurate temperature control or direct failure. The stepping motor is an open-loop system. When the control system sends a pulse signal, it cannot know whether the actuator has been executed in place. When the output shaft of the stepping motor is blocked and causes out-of-step or jamming, the control system will default that the execution is in place and then perform the next action. Seriously, it will cause the water dispenser to leak water, short-circuit the circuit, trigger electric shock and fire accidents, reducing the use safety factor of the water dispenser. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a transmission mechanism for a valve, a regulating valve and a water dispenser to solve the problems existing in the above related technologies, effectively avoid the phenomenon of out-of-step or jamming caused by the distortion and blockage of the transmission shaft, improve the transmission reliability of the transmission mechanism for the valve, ensure the repeat positioning accuracy of the regulating valve, extend the service life of the regulating valve, and improve the use safety factor of the water dispenser.

[0005] To achieve the above purpose, the utility model provides the following scheme:

[0006] The utility model provides a transmission mechanism for a valve, including:

[0007] A housing, the housing includes a base and a motor bracket, and the base is detachably connected to the motor bracket;

[0008] A valve disc, the valve disc is arranged in the inner cavity of the housing, the valve disc includes a static disc and a moving disc, the static disc and the base both have through holes and form a plurality of fluid channels, the moving disc abuts against the static disc, and the moving disc can rotate relative to the static disc to change the flow cross-sectional area of the fluid channel;

[0009] The transmission element, the transmission element includes a rotating shaft and a transmission shaft, the rotating shaft is arranged in the inner cavity of the housing, the rotating shaft is connected to the moving piece and is located on the side of the moving piece away from the static piece, one end of the transmission shaft can be in transmission connection with an external driver, and the other end of the transmission shaft rotatably passes through the motor bracket, the moving piece and the static piece in sequence and then rotatably connects to the base, the rotating shaft is sleeved outside the transmission shaft, and the transmission shaft can drive the rotating shaft to rotate;

[0010] Sealing elements are arranged between the base and between the transmission shaft and the motor bracket.

[0011] Preferably, the moving piece is connected to the rotating shaft in a plug-in manner.

[0012] Preferably, the side of the moving piece away from the static piece has a connecting protrusion, a positioning hole is arranged on the connecting protrusion, the positioning hole is a blind hole, the rotating shaft has a positioning post adapted to the positioning hole, and the rotating shaft is connected to the moving piece in a plug-in manner by using the positioning post;

[0013] When the number of the positioning posts is multiple, the positioning posts are circumferentially and uniformly distributed around the axis of the rotating shaft.

[0014] Preferably, an elastic member is arranged between the transmission shaft and the rotating shaft to press the rotating shaft against the moving piece so that the moving piece and the static piece are closely attached.

[0015] Preferably, the transmission shaft is a stepped shaft, the transmission shaft includes a first segment, a second segment, a mounting boss and a third segment connected in sequence, the first segment passes through the moving piece and the static piece in sequence and then rotatably connects to the base, the diameter of the second segment is larger than that of the first segment, the rotating shaft is sleeved outside the second segment, the outer wall of the second segment has a transmission surface adapted to the rotating shaft, the plane where the transmission surface is located is parallel to the axis of the transmission shaft, and the inner side wall of the rotating shaft has a transfer surface adapted to the transmission surface;

[0016] The elastic member is a spring, the spring is sleeved outside the second segment, and the two ends of the elastic member respectively abut against the rotating shaft and the axial end surface of the mounting boss;

[0017] A shaft seal ring is sleeved on the mounting boss;

[0018] The third segment can be in transmission connection with an external driver.

[0019] Preferably, the static piece is arranged in the mounting groove of the base, and a bottom seal ring and a side seal ring are arranged between the static piece and the base.

[0020] The present utility model also provides a regulating valve, which includes a driver and also includes the above-mentioned valve transmission mechanism. The driver is fixed on the motor bracket, and the transmission shaft is in transmission connection with the output end of the driver.

[0021] Preferably, a first gear is connected to one end of the transmission shaft away from the housing, a second gear is connected to the output end of the driver, the first gear meshes with the second gear, the motor bracket is connected with a gear bracket, and both the first gear and the second gear are rotatably arranged on the gear bracket.

[0022] Preferably, the regulating valve further includes a touch switch. The first gear has a trigger block adapted to the touch switch. The first gear drives the trigger block to rotate to trigger the touch switch. The touch switch is in communication connection with the driver, and the driver adopts a stepping motor.

[0023] The present utility model also provides a water dispenser, which includes the above-mentioned regulating valve.

[0024] The present utility model has achieved the following technical effects compared with the related art: The valve transmission mechanism of the present utility model includes a housing, a valve piece, and a transmission element. The housing includes a base and a motor bracket, and the base is detachably connected to the motor bracket; the valve piece is arranged in the inner cavity of the housing. The valve piece includes a stationary piece and a moving piece. Both the stationary piece and the base have through holes and form a plurality of fluid channels. The moving piece abuts against the stationary piece, and the moving piece can rotate relative to the stationary piece to change the flow cross-sectional area of the fluid channel; the transmission element includes a rotating shaft and a transmission shaft. The rotating shaft is arranged in the inner cavity of the housing. The rotating shaft is connected to the moving piece and is located on the side of the moving piece away from the stationary piece. One end of the transmission shaft can be in transmission connection with an external driver, and the other end of the transmission shaft rotatably passes through the motor bracket, the moving piece, and the stationary piece in sequence and is rotatably connected to the base. The rotating shaft is sleeved outside the transmission shaft, and the transmission shaft can drive the rotating shaft to rotate; sealing elements are arranged between the base and the transmission shaft and between the transmission shaft and the motor bracket.

[0025] In the valve transmission mechanism of the present utility model, the transmission shaft drives the moving piece to rotate by means of the rotating shaft. The moving piece rotates relative to the stationary piece to change the flow cross-sectional area of the fluid channel, thereby realizing the regulation of the fluid. Specifically, one end of the transmission shaft is in transmission connection with the driver, and the other end passes through the motor bracket, the rotating shaft, the moving piece, and the stationary piece and is connected to the base, ensuring that the moving piece rotates coaxially with the transmission shaft, with high repeat positioning accuracy, and effectively avoiding the phenomenon of out-of-step or jamming caused by slight twisting and obstruction of the transmission shaft during the transmission process, improving the transmission reliability of the valve transmission mechanism.

[0026] The present utility model also provides a regulating valve, which includes the above-mentioned valve driving mechanism, improving the working reliability of the regulating valve. Meanwhile, the present utility model provides a water dispenser, which includes the above-mentioned regulating valve. By using the above-mentioned regulating valve, the safety factor of the water dispenser in use can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the related art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0028] Figure 1 FIG. is a disassembled structural schematic diagram of the valve driving mechanism disclosed in the embodiment of the present utility model;

[0029] Figure 2 FIG. is a disassembled structural schematic diagram of the regulating valve disclosed in the embodiment of the present utility model;

[0030] Figure 3 FIG. is a structural schematic diagram of the moving piece and the static piece of the valve driving mechanism disclosed in the embodiment of the present utility model;

[0031] Figure 4 FIG. is a structural schematic diagram of the transmission shaft and the elastic member of the valve driving mechanism disclosed in the embodiment of the present utility model.

[0032] In the figures: 100, valve driving mechanism; 200, regulating valve;

[0033] 1, base; 2, motor bracket; 3, static piece; 4, moving piece; 401, connecting protrusion; 402, positioning hole; 5, transmission shaft; 501, first segment; 502, second segment; 503, mounting boss; 504, third segment; 505, transmission surface; 6, rotating shaft; 601, positioning post; 602, transmission surface; 7, elastic member; 8, shaft seal ring; 9, bottom seal ring; 10, side seal ring; 11, driver; 12, first gear; 1201, trigger block; 13, second gear; 14, gear bracket; 15, touch switch. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0035] The object of the present utility model is to provide a valve drive mechanism, a regulating valve and a water dispenser, so as to solve the problems existing in the above related technologies, effectively avoid the phenomenon of out-of-step or jamming caused by the twisting and obstruction of the transmission shaft, improve the transmission reliability of the valve drive mechanism, ensure the repeated positioning accuracy of the regulating valve, extend the service life of the regulating valve, and improve the use safety factor of the water dispenser.

[0036] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] Embodiment 1

[0038] This embodiment provides a valve drive mechanism 100, which includes a housing, a valve plate and a transmission element. The housing includes a base 1 and a motor bracket 2, and the base 1 is detachably connected to the motor bracket 2; the valve plate is arranged in the inner cavity of the housing. The valve plate includes a stationary plate 3 and a moving plate 4. Both the stationary plate 3 and the base 1 have through holes and form a plurality of fluid channels. The moving plate 4 abuts against the stationary plate 3, and the moving plate 4 can rotate relative to the stationary plate 3 to change the flow cross-sectional area of the fluid channel; the transmission element includes a rotating shaft 6 and a transmission shaft 5. The rotating shaft 6 is arranged in the inner cavity of the housing. The rotating shaft 6 is connected to the moving plate 4 and is located on the side of the moving plate 4 away from the stationary plate 3. One end of the transmission shaft 5 can be in transmission connection with an external driver 11. After the other end of the transmission shaft 5 rotatably passes through the motor bracket 2, the moving plate 4 and the stationary plate 3 in sequence, it is rotatably connected to the base 1. The rotating shaft 6 is sleeved outside the transmission shaft 5, and the transmission shaft 5 can drive the rotating shaft 6 to rotate; sealing elements are arranged between the base 1 and the transmission shaft 5 and the motor bracket 2.

[0039] In the valve drive mechanism 100 of the present utility model, the transmission shaft 5 drives the moving plate 4 to rotate by using the rotating shaft 6. The moving plate 4 rotates relative to the stationary plate 3 to change the flow cross-sectional area of the fluid channel, so as to realize the regulation of the fluid; sealing elements are arranged between the base 1 and the transmission shaft 5 and the motor bracket 2, which ensures the sealing performance of the fluid channel and avoids fluid leakage. Specifically, one end of the transmission shaft 5 is in transmission connection with the driver 11, and the other end passes through the motor bracket 2, the rotating shaft 6, the moving plate 4 and the stationary plate 3 and is connected to the base 1, ensuring that the moving plate 4 rotates coaxially with the transmission shaft 5, with high repeated positioning accuracy, and effectively avoiding the phenomenon of out-of-step or jamming caused by slight twisting and obstruction of the transmission shaft 5 during the transmission process, improving the transmission reliability of the valve drive mechanism 100.

[0040] In this specific embodiment, the moving plate 4 is connected to the rotating shaft 6 by insertion, and the insertion direction is parallel to the axis of the transmission shaft 5. The insertion connection is convenient for assembly and ensures that the rotating shaft 6 can drive the moving plate 4 to rotate.

[0041] Specifically, the side of the moving plate 4 away from the static plate 3 has a connecting protrusion 401, and a positioning hole 402 is provided on the connecting protrusion 401. The positioning hole 402 is a blind hole to avoid affecting the blocking of the fluid channel by the moving plate 4. The rotating shaft 6 has a positioning column 601 adapted to the positioning hole 402. The rotating shaft 6 is connected to the moving plate 4 by plugging with the positioning column 601 to ensure that the rotating shaft 6 can drive the moving plate 4 to rotate.

[0042] A set of positioning posts 601 and positioning holes 402 are provided to meet the connection requirements. In practical applications, in order to improve the force uniformity of the moving plate 4 and the rotating shaft 6, the number of positioning posts 601 can be multiple, and the positioning posts 601 are evenly distributed around the axis of the rotating shaft 6.

[0043] It should also be emphasized that an elastic member 7 is provided between the transmission shaft 5 and the rotating shaft 6 to press the rotating shaft 6 against the moving plate 4, further ensuring that the rotating shaft 6 can smoothly transmit torque to the moving plate 4 and ensure the normal operation of the valve transmission mechanism 100.

[0044] More specifically, the transmission shaft 5 is a stepped shaft, and the transmission shaft 5 includes a first section 501, a second section 502, a mounting boss 503 and a third section 504 which are connected in sequence. The first section 501 passes through the movable plate 4 and the static plate 3 in sequence and is rotatably connected to the base 1. The diameter of the second section 502 is larger than that of the first section 501. The rotating shaft 6 is sleeved on the outside of the second section 502. The outer wall of the second section 502 has a transmission surface 505 that is compatible with the rotating shaft 6. The plane where the transmission surface 505 is located is parallel to the axis of the transmission shaft 5. The inner wall of the rotating shaft 6 has a transfer surface 602 that is compatible with the transmission surface 505 to prevent the rotating shaft 6 and the transmission shaft 5 from rotating relative to each other. The transmission surface 505 and the transfer surface 602 are used to offset and transmit torque, so that the transmission shaft 5 can drive the rotating shaft 6 to rotate.

[0045] In this specific embodiment, the elastic member 7 is a spring, and the elastic member 7 is sleeved on the outside of the second segment 502, which is easy to install. The two ends of the elastic member 7 are respectively against the axial end faces of the rotating shaft 6 and the mounting boss 503, so that the rotating shaft 6 is pressed against the moving plate 4 to ensure the reliability of the plug-in connection between the two, further ensuring the smooth transmission of the torque, and at the same time ensuring that the moving plate 4 and the static plate 3 are tightly fitted to avoid leakage.

[0046] The mounting boss 503 realizes the function of limiting the elastic member 7. Meanwhile, a shaft sealing ring 8 is sleeved on the mounting boss 503 to enhance the sealing performance between the transmission shaft 5 and the housing.

[0047] The third segment 504 can be transmission-connected to the external driver 11 so that the torque of the external driver 11 can be smoothly input.

[0048] It should also be noted that the stationary vane 3 is arranged in the installation groove of the base 1, and a bottom sealing ring 9 and a side sealing ring 10 are arranged between the stationary vane 3 and the base 1. The bottom sealing ring 9 is installed in the base 1. The stationary vane 3 and the base 1 squeeze the bottom sealing ring 9 to form four independent fluid channels. The side sealing ring 10, together with the bottom sealing ring 9 and the shaft sealing ring 8, ensures the sealing performance of the inner cavity of the housing, and wraps the stationary vane 3, the moving vane 4 and the rotating shaft 6 in the sealed inner cavity of the housing. It should also be explained here that in this specific embodiment, the stationary vane 3 and the base 1 squeeze the bottom sealing ring 9 to form four independent fluid channels. In other specific embodiments that can be realized by the present utility model, the number of formed fluid channels can be adjusted according to the adjustment requirements of the regulating valve 200.

[0049] Embodiment 2

[0050] This embodiment provides a regulating valve 200, which includes a driver 11 and also includes the valve transmission mechanism 100 of Embodiment 1. The driver 11 is fixed on the motor bracket 2, and the transmission shaft 5 is in transmission connection with the output end of the driver 11. The driver 11 is used to drive the transmission shaft 5 to rotate, and then drive the moving vane 4 to rotate through the rotating shaft 6. The rotation of the moving vane 4 adjusts the shielding condition of the stationary vane 3, thereby realizing the adjustment of the cross-sectional area of the fluid channel.

[0051] For the regulating valve 200 of the present utility model, the transmission shaft 5 passes through the moving vane 4 and the stationary vane 3, effectively solving the problem of slight distortion and blockage of the transmission shaft 5 resulting in out-of-step or jamming, and improving the adjustment accuracy of the regulating valve 200. The regulating valve 200 of the present utility model can be a flow regulating valve or a temperature regulating valve, etc.

[0052] Wherein, a first gear 12 is connected to one end of the transmission shaft 5 away from the housing, a second gear 13 is connected to the output end of the driver 11, the first gear 12 meshes with the second gear 13, the motor bracket 2 is connected with a gear bracket 14, and the first gear 12 and the second gear 13 are both rotatably arranged on the gear bracket 14. The smooth transmission of torque is realized by using the first gear 12 and the second gear 13, with high transmission accuracy and compact structure, which is beneficial to the miniaturization of the regulating valve 200. In other specific embodiments that can be realized by the present utility model, other transmission structures can also be selected, such as chain drive or belt drive, etc., to meet different working conditions.

[0053] The regulating valve 200 of the present utility model further includes a touch switch 15. The first gear 12 has a trigger block 1201 adapted to the touch switch 15. The rotation of the first gear 12 driving the trigger block 1201 can trigger the touch switch 15. The touch switch 15 is in communication connection with the driver 11. The driver 11 adopts a stepping motor. After the touch switch 15 is triggered, a signal for returning to the zero point is sent to the driver 11, improving the controllability of the regulating valve 200.

[0054] Embodiment III

[0055] This embodiment provides a water dispenser, including the regulating valve 200 of Embodiment II. The working reliability of the regulating valve 200 effectively improves the safety factor of the water dispenser during use.

[0056] In this utility model, specific examples are used to elaborate on the principle and implementation manner of the utility model. The description of the above embodiments is only used to help understand the method and its core idea of the utility model; at the same time, for those of ordinary skill in the art, according to the idea of the utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the utility model.

Claims

1. A valve drive mechanism, characterized in that, Comprising: A housing, the housing includes a base and a motor bracket, and the base is detachably connected to the motor bracket; A valve plate, the valve plate is arranged in the inner cavity of the housing, the valve plate includes a stationary plate and a movable plate, both the stationary plate and the base have through holes and form a plurality of fluid channels, the movable plate abuts against the stationary plate, and the movable plate can rotate relative to the stationary plate to change the flow cross-sectional area of the fluid channel; A transmission element, the transmission element includes a rotating shaft and a transmission shaft, the rotating shaft is arranged in the inner cavity of the housing, the rotating shaft is connected to the movable plate and is located on the side of the movable plate away from the stationary plate, one end of the transmission shaft can be in transmission connection with an external driver, and the other end of the transmission shaft rotatably passes through the motor bracket, the movable plate and the stationary plate in sequence and then is rotatably connected to the base, the rotating shaft is sleeved outside the transmission shaft, and the transmission shaft can drive the rotating shaft to rotate; Sealing elements are arranged between the base and the transmission shaft and the motor bracket respectively.

2. The valve drive mechanism according to claim 1, characterized in that: The movable plate is inserted and connected with the rotating shaft.

3. The valve drive mechanism according to claim 1, wherein: On the side of the movable plate away from the stationary plate, there is a connecting protrusion, a positioning hole is arranged on the connecting protrusion, the positioning hole is a blind hole, the rotating shaft has a positioning post adapted to the positioning hole, and the rotating shaft is inserted and connected with the movable plate by using the positioning post; When the number of the positioning posts is multiple, the positioning posts are circumferentially distributed uniformly around the axis of the rotating shaft.

4. The valve drive mechanism according to claim 2, characterized in that: An elastic member is arranged between the transmission shaft and the rotating shaft to press the rotating shaft against the movable plate so that the movable plate is closely attached to the stationary plate.

5. The valve drive mechanism according to claim 4, characterized in that: The transmission shaft is a stepped shaft, the transmission shaft includes a first segment, a second segment, a mounting boss and a third segment connected in sequence, the first segment passes through the movable plate and the stationary plate in sequence and then is rotatably connected to the base, the diameter of the second segment is larger than that of the first segment, the rotating shaft is sleeved outside the second segment, the outer wall of the second segment has a transmission surface adapted to the rotating shaft, the plane where the transmission surface is located is parallel to the axis of the transmission shaft, and the inner side wall of the rotating shaft has a transfer surface adapted to the transmission surface; The elastic member is a spring, the spring is sleeved outside the second segment, and the two ends of the elastic member respectively abut against the rotating shaft and the axial end face of the mounting boss; A shaft seal ring is sleeved on the mounting boss; The third segment can be in transmission connection with an external driver.

6. The valve drive mechanism according to claim 1, characterized in that: The stationary plate is arranged in the mounting groove of the base, and a bottom seal ring and a side seal ring are arranged between the stationary plate and the base.

7. A regulating valve, comprising a driver, characterized in that: It further includes a valve transmission mechanism according to any one of claims 1-6, the driver is fixed on the motor bracket, and the transmission shaft is in transmission connection with the output end of the driver.

8. The regulating valve according to claim 7, wherein: One end of the transmission shaft away from the housing is connected with a first gear, the output end of the driver is connected with a second gear, the first gear meshes with the second gear, the motor bracket is connected with a gear bracket, and both the first gear and the second gear are rotatably arranged on the gear bracket.

9. The regulating valve according to claim 8, characterized in that: It further includes a touch switch. A trigger block adapted to the touch switch is provided on the first gear. Driving the trigger block to rotate by the first gear can trigger the touch switch. The touch switch is communicatively connected to the driver, and the driver uses a stepper motor.

10. A water dispenser, characterized in that: It includes the regulating valve according to any one of claims 7-9.

Images