An electric valve based on a ceramic valve core

Abstract

This application provides an electric valve based on a ceramic valve core, belonging to the field of electric valve technology. The electric valve based on the ceramic valve core includes a main pipe, a shell plate, and a drive mechanism. A ceramic valve core is disposed inside the main pipe; the shell plate is mounted on the surface of the main pipe, and a drive shaft is connected to the surface of the ceramic valve core. The top end of the drive shaft passes through the main pipe and the shell plate sequentially. A transmission shaft is rotatably mounted on the surface of the shell plate, and the transmission shaft and the drive shaft are connected by a transmission component. This application utilizes the drive mechanism, worm gear, worm wheel, transmission shaft, and transmission component to rotate the drive shaft and the ceramic valve core. The transmission of the worm gear and worm wheel has a reverse self-locking property. With the cooperation of the worm gear and worm wheel, when fluid impacts the ceramic valve core, it prevents the possibility of rotation of the ceramic valve core and the drive shaft, making the ceramic valve core more stable during use.

Description

Technical Field

[0001] This application relates to the field of electric valves, and more specifically, to an electric valve based on a ceramic valve core. Background Technology

[0002] Generally speaking, an electric valve is simply a valve controlled by an electric actuator, thereby realizing the opening and closing of the valve. It can be divided into two parts: the upper part is the electric actuator, and the lower part is the valve.

[0003] When the electric valve is closed, the water flowing through it will impact the valve core. Under the impact of the water flow, the valve core will move, affecting the stability of the valve core during use. Summary of the Invention

[0004] To overcome the above shortcomings, this application provides an electric valve based on a ceramic valve core, which aims to improve the problem of poor valve core stability.

[0005] This application provides an electric valve based on a ceramic valve core, including a main pipe, a shell plate, and a drive motor. A ceramic valve core is disposed inside the main pipe; the shell plate is mounted on the surface of the main pipe, and a drive shaft is connected to the surface of the ceramic valve core. The top end of the drive shaft passes through the main pipe and the shell plate sequentially. A transmission shaft is rotatably mounted on the surface of the shell plate, and the transmission shaft and the drive shaft are connected by a transmission component; the drive motor is mounted on the surface of the shell plate, and a worm gear is driven to the output shaft of the drive motor. A worm wheel is keyed to the transmission shaft, and the worm gear and the worm wheel mesh and transmit power.

[0006] In the above process, the drive motor drives the worm gear to rotate, which in turn drives the worm wheel and the transmission shaft to rotate. Under the transmission of the transmission components, the drive shaft is driven, causing the ceramic valve core to rotate. This allows the main pipeline to be opened and closed, controlling the flow rate within the main pipeline. The transmission of the worm gear and worm wheel has a reverse self-locking property. With the cooperation of the worm gear and worm wheel, when the fluid impacts the ceramic valve core, it will not cause the ceramic valve core and the drive shaft to rotate, making the ceramic valve core more stable during use.

[0007] In one specific implementation, flanges are provided at both ends of the main pipeline, and a valve cavity is provided at the center of the main pipeline, with the ceramic valve core located inside the valve cavity.

[0008] In the above implementation process, the valve cavity is set up to facilitate the installation of the ceramic valve core. It can be understood that the side wall of the ceramic valve core and the inner wall of the main pipeline are sealed together, which is conducive to sealing the main pipeline.

[0009] In one specific implementation, the ceramic valve core is a spherical valve core, and a water flow channel is provided in the center of the ceramic valve core.

[0010] In the above implementation process, the ceramic valve core is set to a spherical shape, which is less prone to rotation under fluid impact compared to a petal-shaped valve core.

[0011] In one specific implementation, the connection between the main pipe and the shell plate is integrally formed, and both the surface of the main pipe and the surface of the shell plate are provided with through holes corresponding to the drive shaft.

[0012] In the above implementation process, the one-piece molding design can improve the strength of the connection between the main pipe and the shell plate, while the through hole facilitates the installation of the drive shaft.

[0013] In one specific implementation, a sealing ring is fastened to the shaft body of the drive shaft, and the sidewall of the sealing ring is tightly sealed to the inner wall of the main pipe.

[0014] In the above implementation process, the sealing ring can improve the sealing performance at the connection between the drive shaft and the main pipe, and reduce the possibility of fluid leakage. In addition, at least two sealing rings can be provided at intervals along the length of the drive shaft.

[0015] In one specific implementation, the shaft body of the drive shaft is fitted with an elastic rubber sleeve, and the sidewall of the elastic rubber sleeve is fixedly connected to the shell plate.

[0016] In the above implementation process, the addition of an elastic rubber sleeve can improve the sealing performance at the connection between the drive shaft and the housing plate, thus preventing fluid leakage.

[0017] In one specific implementation, the transmission component includes a driving gear and a driven gear, the driving gear being keyed to the transmission shaft, the driven gear being keyed to the drive shaft, and the driving gear and the driven gear engaging in transmission.

[0018] In the above implementation process, the driven gear can be a sector gear. By changing the gear ratio between the driving gear and the driven gear, differential transmission can be achieved between the transmission shaft and the drive shaft.

[0019] In one specific implementation, the drive is a drive motor, and the output shaft of the drive is fixedly connected to the worm gear.

[0020] In the above implementation process, the drive motor can drive the worm gear to rotate more stably, and the output shaft of the drive motor can rotate in both directions. The drive motor also has a self-locking function for the output shaft, which improves the stability during use.

[0021] In one specific implementation, a support plate is provided on the surface of the shell plate, and a circuit board is provided on the surface of the support plate, the circuit board being electrically connected to the drive motor.

[0022] In the above implementation process, a circuit board is set up to facilitate the control of the drive motor.

[0023] In one specific implementation, the support plate has an L-shaped cross-section, and the support plate and the drive motor are staggered.

[0024] In the above implementation process, staggered settings can avoid the support plate affecting the rotation of the output shaft of the drive motor, which is beneficial to the operation of the drive motor.

[0025] In one specific implementation, a cover is provided at the upper end of the shell plate, a layer plate is provided inside the cover, a rotating shaft is rotatably mounted on the surface of the layer plate, a rotating component is fastened and adjusted on the surface of the rotating shaft, and the side of the rotating component extends to the outside of the cover. A locking protrusion is provided at the bottom end of the rotating shaft, a slot is provided in the shell plate, an annular limiting strip is installed in the slot, and a notch corresponding to the locking protrusion is provided on the surface of the annular limiting strip. The bottom end of the rotating shaft and the locking protrusion are inserted into the slot of the slot through the annular limiting strip. The top end of the rotating shaft penetrates the cover, and a friction plate is provided on the upper end surface of the cover. An angle plate is installed on the lower end surface of the friction plate. The lower end of the angle plate slides through the cover and the layer plate in sequence, and a support spring is connected between the lower end of the angle plate and the lower end surface of the layer plate.

[0026] In the above process, after inserting the protruding piece into the slot through the notch on the surface of the annular limiting strip, rotating the shaft will misalign the protruding piece and the notch on the surface of the annular limiting strip. The annular limiting strip will then restrict the movement of the protruding piece, thereby restricting the movement of the shelf and the cover, thus fixing the cover to the upper end face of the shelf. Under the support of the support spring, the corner plate will pull the friction plate towards the shaft. After the friction plate is in close contact with the shaft, it will increase the resistance encountered when the shaft rotates, thus allowing the protruding piece to be inserted more stably into the slot. When removing the cover, simply pull the corner plate to separate the corner plate from the shaft, then rotate the rotating part and the shaft to move the protruding piece on the surface of the shaft to the notch on the surface of the annular limiting strip, and pull the protruding piece out of the slot to remove the cover. The operation is convenient and does not require any auxiliary tools.

[0027] In one specific implementation, a limiting ring is provided on the lower end face of the shelf, the top end of the drive shaft is inserted into the inside of the limiting ring, and a limiting groove is provided on the side wall of the limiting ring. A locking block is provided on the shaft body of the drive shaft, and the locking block is slidably inserted into the groove of the limiting groove.

[0028] In the above implementation process, after the shell cover is installed on the surface of the shell plate, the limiting ring on the lower end face of the layer plate will be fitted onto the surface of the drive shaft. The limiting ring can limit the vibration amplitude of the drive shaft, so that the ceramic valve core can be used more stably in the main pipeline. After the block is inserted into the limiting groove, the limiting ring can limit the movement range of the block, thereby limiting the rotation amplitude of the drive shaft and the ceramic valve core, which is more conducive to the use of the ceramic valve core.

[0029] In one specific implementation, the layer divides the interior of the shell cover into an upper cavity and a lower cavity, with the rotating component located in the upper cavity and the drive motor located in the lower cavity.

[0030] In the above implementation process, the rotating parts and the drive motor are separated by the shelf, which can reduce the possibility of other components affecting the operation of the drive motor.

[0031] In one specific implementation, the rotating component is a knob, and the side wall of the rotating component is engraved with anti-slip texture, while the side wall of the cover is provided with a through groove corresponding to the rotating component.

[0032] In the above process, the anti-slip texture can reduce the possibility of workers slipping their hands when twisting or turning parts.

[0033] In one specific implementation, the lower end face of the friction plate is engraved with anti-slip texture, and the connection between the corner plate and the friction plate is integrally formed.

[0034] In the above implementation process, the anti-slip texture can increase the friction between the friction plate and the rotating shaft, which is more conducive to the braking of the rotating shaft.

[0035] In one specific implementation, the limiting ring and the drive shaft are coaxially arranged, and the side wall of the card block is in contact with the inner wall of the limiting groove.

[0036] In the above implementation process, the limiting ring helps to hinder the movement of the locking block, thereby limiting the rotation range of the drive shaft.

[0037] In one specific implementation, the surface of the shell cover is provided with a sealing mechanism, which includes a horizontal plate and a vertical plate. The horizontal plate is slidably disposed inside the shell cover, and one side of the horizontal plate is attached to the locking block. The vertical plate is installed on the upper end face of the horizontal plate. A first air hole is opened on the surface of the shell cover, and a second air hole is opened on the surface of the layer plate. The top end of the vertical plate slides through the holes of the second air hole and the first air hole in sequence. An upper sealing strip and a lower sealing strip are installed on the upper end face of the vertical plate. The lower end face of the upper sealing strip is sealed and fitted with the upper end face of the shell cover, and the lower end face of the lower sealing strip is sealed and fitted with the inner top end of the shell cover. A vertical plate is provided on the surface of the layer plate, and a return spring is installed on the side wall of the vertical plate. One side of the return spring is fixedly connected to the vertical plate, and the vertical plate is located between the return spring and the locking block.

[0038] In the above process, when the drive shaft rotates, it drives the locking block to move, which in turn pushes the horizontal plate to move. The vertical plate on the surface of the horizontal plate then drives the upper and lower sealing strips to move, removing them from the first vent. The hot air inside the cover can then be discharged through the second and first vents, which is more conducive to the heat dissipation of the drive motor. When the drive shaft reverses and drives the locking block to reset, the locking block separates from the horizontal plate. The reset spring then supports the vertical plate to reset, and the upper and lower sealing strips connected to the vertical plate will seal the first vent, improving the sealing of the cover. When the drive motor drives the drive shaft and ceramic valve core to perform one forward and reverse rotation, it not only opens and closes the main pipe once, but also opens and closes the first vent. Thus, the drive motor can be cooled when it is working.

[0039] In one specific implementation, the surface of the vertical plate is fitted with a sealing strip, and the lower end face of the sealing strip is sealed and fitted to the upper end face of the layer plate. At least two vertical plates are spaced apart on the upper end face of the horizontal plate, and the vertical plates, the upper sealing strip, the lower sealing strip, and the sealing strip are arranged in a one-to-one correspondence.

[0040] In the above implementation process, the sealing strip is set to seal the second pores on the surface of the plate, which can reduce the possibility of water flowing into the surface of the drive motor through the second pores and reduce the possibility of damage to the drive motor.

[0041] Beneficial effects: This application provides an electric valve based on a ceramic valve core. Through the cooperation of a drive motor, worm gear, and worm wheel, the drive shaft is driven to rotate. Under the transmission of the transmission components, the drive shaft and the ceramic valve core rotate, which can open and close the main pipeline. The transmission of the worm gear and worm wheel has a reverse self-locking property. With the cooperation of the worm gear and worm wheel, when the fluid impacts the ceramic valve core, it will not cause the ceramic valve core and the drive shaft to rotate, making the ceramic valve core more stable during use.

[0042] When an electric valve is opened or closed, the valve core is driven to rotate by a drive motor inside the housing. However, the drive motor inside the housing is prone to damage, and the housing of the electric valve is fixed by bolts. Without the use of auxiliary tools, it cannot be disassembled or assembled, which is not conducive to the maintenance of the drive motor inside the housing.

[0043] When installing the cover, insert the protruding part into the slot through the notch on the surface of the annular limiting strip. Then, rotate the shaft to displace the protruding part and the notch on the surface of the annular limiting strip. The annular limiting strip will then restrict the movement of the protruding part, thereby restricting the movement of the shelf and the cover. This will fix the cover to the upper surface of the cover. With the support of the support spring, the corner plate will pull the friction plate towards the shaft. After the friction plate is in close contact with the shaft, it will increase the resistance to the rotation of the shaft, which will make the protruding part more stably inserted into the slot. When removing the cover, simply pull the corner plate to separate the corner plate from the shaft. Then, rotate the rotating part and the shaft to move the protruding part on the surface of the shaft to the notch on the surface of the annular limiting strip. Pull the protruding part out of the slot, and the cover can be removed. The operation is convenient and does not require any auxiliary tools. When the drive motor is damaged, the cover can be quickly removed to repair the drive motor.

[0044] Furthermore, after the cover is installed on the surface of the shell plate, the limiting ring on the lower end face of the shelf plate will be fitted onto the surface of the drive shaft. The limiting ring can limit the vibration amplitude of the drive shaft, which can make the ceramic valve core more stable in the main pipeline. After the locking block is inserted into the limiting groove, the limiting ring can limit the movement range of the locking block, thereby limiting the rotation amplitude of the drive shaft and the ceramic valve core, so that the drive shaft and the ceramic valve core can only rotate 0°, which can reduce the possibility of damage to the ceramic valve core due to continuous rotation and is more conducive to the use of the ceramic valve core.

[0045] When an electric valve is opened or closed, the valve core is driven to rotate by a drive motor inside the housing. However, the drive motor generates heat during operation, and the housing of the electric valve is not good at dissipating heat, so the drive motor inside the housing is prone to damage at high temperatures.

[0046] When the drive shaft rotates, it drives the locking block to move, which in turn pushes the horizontal plate to move. The vertical plate on the surface of the horizontal plate then moves the upper sealing strip, lower sealing strip, and sealing strip, removing the upper and lower sealing strips from the first vent, while the sealing strip moves from the second vent. The hot air around the drive motor can then be discharged through the second and first vents, which is more conducive to the heat dissipation of the drive motor. When the drive shaft reverses and drives the locking block to reset, the locking block separates from the horizontal plate, and the reset spring supports the vertical plate to reset. The upper and lower sealing strips connected to the vertical plate then seal the first vent, improving the sealing of the cover. When the drive motor drives the drive shaft and ceramic valve core to perform one forward and reverse rotation, it not only opens and closes the main pipe once, but also opens and closes the first vent, thus providing heat dissipation for the drive motor during operation. Attached Figure Description

[0047] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0048] Figure 1 This is a schematic diagram of an electric valve structure based on a ceramic valve core provided in an embodiment of this application;

[0049] Figure 2 A schematic diagram of the internal structure of an electric valve based on a ceramic valve core, provided for an embodiment of this application;

[0050] Figure 3 A schematic diagram of the internal structure of the main pipeline provided for an embodiment of this application;

[0051] Figure 4 A schematic diagram of the connection structure between the ceramic valve core and the drive motor provided in the embodiments of this application;

[0052] Figure 5 A schematic diagram of the shell cover structure provided for an embodiment of this application;

[0053] Figure 6 A bottom view of the shelf structure provided for an embodiment of this application;

[0054] Figure 7 A schematic diagram of the connection structure between the rotating shaft and the friction plate provided in the embodiments of this application;

[0055] Figure 8 A schematic diagram of the closed mechanism structure provided for the embodiments of this application.

[0056] In the diagram: 100-Main pipe; 110-Ceramic valve core; 120-Drive shaft; 121-Sealing ring; 122-Elastic sleeve; 123-Clamping block; 200-Shell plate; 210-Drive shaft; 220-Transmission component; 221-Drive gear; 222-Driven gear; 230-Support plate; 240-Circuit board; 250-Slot; 251-Annular limiting strip; 300-Driver; 310-Worm gear; 320-Worm wheel; 400-Shell Cover; 410-Shelf; 411-Upright plate; 420-Rotating shaft; 430-Rotating component; 440-Clamping protrusion; 450-Friction plate; 460-Angle plate; 461-Support spring; 470-Limiting ring; 471-Limiting groove; 500-Sealing mechanism; 510-Horizontal plate; 520-Vertical plate; 530-First vent; 540-Second vent; 550-Upper sealing strip; 560-Lower sealing strip; 570-Reset spring; 580-Sealing strip. Detailed Implementation

[0057] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0058] Please see Figures 1-8 This application provides an electric valve based on a ceramic valve core, including a main pipe 100, a shell plate 200, and a drive motor 300. The shell plate 200 is connected to the main pipe 100, and the drive motor 300 is mounted on the surface of the shell plate 200.

[0059] The main pipe 100 is equipped with a ceramic valve core 110;

[0060] The shell plate 200 is installed on the surface of the main pipe 100. The surface of the ceramic valve core 110 is connected to the drive shaft 120, and the top end of the drive shaft 120 passes through the main pipe 100 and the shell plate 200 in sequence. The surface of the shell plate 200 is rotatably mounted with the transmission shaft 210, and the transmission shaft 210 and the drive shaft 120 are connected by the transmission component 220.

[0061] The drive unit 300 is mounted on the surface of the shell plate 200, and the output shaft of the drive unit 300 is driven by a worm gear 310. The drive shaft 210 is keyed to a worm wheel 320, and the worm gear 310 and the worm wheel 320 mesh and transmit power.

[0062] In the above implementation process, the drive motor 300 drives the worm gear 310 to rotate, which in turn drives the worm wheel 320 and the transmission shaft 210 to rotate. Under the transmission of the transmission component 220, the drive shaft 120 is driven, causing the drive shaft 120 to drive the ceramic valve core 110 to rotate. This allows the main pipeline 100 to be opened and closed, controlling the flow rate within the main pipeline 100. The transmission of the worm gear 310 and the worm wheel 320 has a reverse self-locking property. With the cooperation of the worm gear 310 and the worm wheel 320, when the fluid impacts the ceramic valve core 110, there is no possibility of the ceramic valve core 110 and the drive shaft 120 rotating, making the ceramic valve core 110 more stable during use.

[0063] In one specific implementation, flanges are provided at both ends of the main pipe 100, and a valve cavity is provided at the center of the main pipe 100, with the ceramic valve core 110 located inside the valve cavity.

[0064] In the above implementation process, the valve cavity is set up to facilitate the installation of the ceramic valve core 110. It can be understood that the side wall of the ceramic valve core 110 and the inner wall of the main pipeline 100 are sealed and fitted together, which is conducive to sealing the main pipeline 100.

[0065] In one specific implementation, the ceramic valve core 110 is a spherical valve core, and a water flow channel is provided in the center of the ceramic valve core 110.

[0066] In the above implementation process, the ceramic valve core 110 is set to a spherical shape. Compared with the petal-shaped valve core, the ceramic valve core 110 is less likely to rotate under fluid impact.

[0067] In one specific implementation, the connection between the main pipe 100 and the shell plate 200 is integrally formed, and both the surface of the main pipe 100 and the surface of the shell plate 200 are provided with through holes corresponding to the drive shaft 120.

[0068] In the above implementation process, the one-piece molding design can improve the strength of the connection between the main pipe 100 and the shell plate 200, while the through hole facilitates the installation of the drive shaft 120.

[0069] In one specific implementation, a sealing ring 121 is fastened to the shaft body of the drive shaft 120, and the side wall of the sealing ring 121 is tightly sealed to the inner wall of the main pipe 100.

[0070] In the above implementation process, the sealing ring 121 can improve the sealing performance at the connection between the drive shaft 120 and the main pipe 100 and reduce the possibility of fluid leakage. In addition, at least two sealing rings 121 can be provided at intervals along the length of the drive shaft 120.

[0071] In one specific implementation, the shaft body of the drive shaft 120 is fitted with an elastic rubber sleeve 122, and the sidewall of the elastic rubber sleeve 122 is fixedly connected to the shell plate 200.

[0072] In the above implementation process, the addition of an elastic rubber sleeve 122 can improve the sealing performance at the connection between the drive shaft 120 and the shell plate 200, and can prevent fluid leakage.

[0073] In one specific embodiment, the transmission component 220 includes a driving gear 221 and a driven gear 222. The driving gear 221 is keyed to the transmission shaft 210, and the driven gear 222 is keyed to the drive shaft 120. The driving gear 221 and the driven gear 222 mesh and transmit power to each other.

[0074] In the above implementation process, the driven gear 222 can be a sector gear. By changing the gear ratio between the driving gear 221 and the driven gear 222, the transmission shaft 210 and the drive shaft 120 can achieve the effect of differential transmission.

[0075] In one specific implementation, the drive unit 300 is a drive motor, and the output shaft of the drive unit 300 is fixedly connected to the worm gear 310.

[0076] In the above implementation process, the drive motor 300 can drive the worm gear 310 to rotate more stably, and the output shaft of the drive motor 300 can rotate in both directions. The drive motor 300 also has a self-locking function for the output shaft, which improves the stability during use.

[0077] In one specific implementation, a support plate 230 is provided on the surface of the shell plate 200, and a circuit board 240 is provided on the surface of the support plate 230, the circuit board 240 being electrically connected to the drive motor 300.

[0078] In the above implementation process, circuit board 240 is set up to facilitate the control of drive motor 300.

[0079] In one specific implementation, the support plate 230 has an L-shaped cross section, and the support plate 230 and the drive motor 300 are staggered.

[0080] In the above implementation process, the staggered setting can avoid the support plate 230 from affecting the rotation of the output shaft of the drive motor 300, which is beneficial to the operation of the drive motor 300.

[0081] When an electric valve is opened or closed, the valve core is driven to rotate by a drive motor inside the housing. However, the drive motor inside the housing is prone to damage, and the housing of the electric valve is fixed by bolts. Without the use of auxiliary tools, it cannot be disassembled or assembled, which is not conducive to the maintenance of the drive motor inside the housing.

[0082] In one specific embodiment, a cover 400 is provided at the upper end of the shell plate 200, a shelf 410 is provided inside the cover 400, a rotating shaft 420 is rotatably mounted on the surface of the shelf 410, a rotating member 430 is fastened and adjusted on the surface of the rotating shaft 420, and the side of the rotating member 430 extends to the outside of the cover 400, a locking protrusion 440 is provided at the bottom end of the rotating shaft 420, a slot 250 is provided in the shell plate 200, and an annular limiting strip 251 is installed in the slot of the slot 250, and the annular limiting strip 251... The surface of the rotating shaft 420 has a notch corresponding to the protrusion 440. The bottom end of the rotating shaft 420 and the protrusion 440 are inserted into the groove of the slot 250 through the annular limiting strip 251. The top end of the rotating shaft 420 passes through the cover 400. A friction plate 450 is provided on the upper end surface of the cover 400. An angle plate 460 is installed on the lower end surface of the friction plate 450. The lower end of the angle plate 460 slides through the cover 400 and the shelf 410 in sequence. A support spring 461 is connected between the lower end of the angle plate 460 and the lower end surface of the shelf 410.

[0083] In the above implementation process, after inserting the protrusion 440 into the slot 250 through the notch on the surface of the annular limiting strip 251, rotating the shaft 420 will misalign the protrusion 440 and the notch on the surface of the annular limiting strip 251. The annular limiting strip 251 will then restrict the movement of the protrusion 440, thereby restricting the movement of the shelf 410 and the cover 400. This will fix the cover 400 to the upper end face of the cover 200. Under the support of the support spring 461, the corner plate 460 will pull the friction plate 450 towards the shaft 420, and the friction plate 450 will be in close contact with... After the pivot 420 is engaged, the resistance encountered when the pivot 420 rotates will increase, which will allow the locking protrusion 440 to be inserted more stably into the slot 250. When disassembling the cover 400, simply pull the corner plate 460 to separate the corner plate 460 from the pivot 420, then rotate the rotating part 430 and the pivot 420 to move the locking protrusion 440 on the surface of the pivot 420 to the notch on the surface of the annular limiting strip 251, and pull the locking protrusion 440 out of the slot 250. The cover 400 can then be removed. The operation is convenient and does not require any auxiliary tools.

[0084] In one specific implementation, a limiting ring 470 is provided on the lower end face of the shelf 410, the top end of the drive shaft 120 is inserted into the inside of the limiting ring 470, and a limiting groove 471 is provided on the side wall of the limiting ring 470. A locking block 123 is provided on the shaft of the drive shaft 120, and the locking block 123 is slidably inserted into the groove of the limiting groove 471.

[0085] In the above implementation process, after the cover 400 is installed on the surface of the shell plate 200, the limiting ring 470 on the lower end face of the layer plate 410 will be fitted onto the surface of the drive shaft 120. The limiting ring 470 can limit the vibration amplitude of the drive shaft 120, so that the ceramic valve core 110 can be used more stably in the main pipeline 100. After the locking block 123 is inserted into the limiting groove 471, the limiting ring 470 can limit the movement range of the locking block 123, thereby limiting the rotation amplitude of the drive shaft 120 and the ceramic valve core 110, which is more conducive to the use of the ceramic valve core 110.

[0086] When installing the cover 400, after inserting the latch 440 into the slot 250 through the notch on the surface of the annular limiting strip 251, rotating the shaft 420 will misalign the latch 440 and the notch on the surface of the annular limiting strip 251. The annular limiting strip 251 will then restrict the movement of the latch 440, thereby restricting the movement of the shelf 410 and the cover 400, thus fixing the cover 400 to the upper surface of the cover 200. Under the support of the support spring 461, the corner plate 460 will pull the friction plate 450 towards the shaft 420. After the friction plate 450 is in close contact with the shaft 420, it will increase the rotation of the shaft 420. The resistance encountered during rotation allows the locking protrusion 440 to be inserted more stably into the slot 250. When disassembling the cover 400, simply pull the corner plate 460 to separate the corner plate 460 from the rotating shaft 420, then rotate the rotating part 430 and the rotating shaft 420 to move the locking protrusion 440 on the surface of the rotating shaft 420 to the notch on the surface of the annular limiting strip 251, and pull the locking protrusion 440 out of the slot 250. The cover 400 can then be removed. The operation is convenient and does not require any auxiliary tools. When the drive motor 300 is damaged, the cover 400 can be quickly removed to repair the drive motor 300.

[0087] Furthermore, after the cover 400 is installed on the surface of the shell plate 200, the limiting ring 470 on the lower end face of the shelf plate 410 will be fitted onto the surface of the drive shaft 120. The limiting ring 470 can limit the vibration amplitude of the drive shaft 120, so that the ceramic valve core 110 can be used more stably in the main pipeline 100. After the locking block 123 is inserted into the limiting groove 471, the limiting ring 470 can limit the movement range of the locking block 123, thereby limiting the rotation amplitude of the drive shaft 120 and the ceramic valve core 110, so that the drive shaft 120 and the ceramic valve core 110 can only rotate 90°, which can reduce the possibility of damage to the ceramic valve core 110 due to continuous rotation and is more conducive to the use of the ceramic valve core 110.

[0088] In one specific implementation, the shelf 410 divides the interior of the cover 400 into an upper cavity and a lower cavity, with the rotating component 430 located in the upper cavity and the drive motor 300 located in the lower cavity.

[0089] In the above implementation process, the rotating part 430 and the drive motor 300 are separated by the shelf 410, which can reduce the possibility of other components affecting the operation of the drive motor 300.

[0090] In one specific implementation, the rotating component 430 is a knob, and the side wall of the rotating component 430 is engraved with anti-slip texture, and the side wall of the cover 400 is provided with a through groove corresponding to the rotating component 430.

[0091] In the above process, the anti-slip texture can reduce the possibility of workers slipping their hands when twisting the rotating part 430.

[0092] In one specific implementation, the lower end face of the friction plate 450 is engraved with anti-slip texture, and the connection between the corner plate 460 and the friction plate 450 is integrally formed.

[0093] In the above implementation process, the anti-slip texture can increase the friction between the friction plate 450 and the rotating shaft 420, which is more conducive to the braking of the rotating shaft 420.

[0094] In one specific implementation, the limiting ring 470 and the drive shaft 120 are coaxially arranged, and the side wall of the locking block 123 is in contact with the inner wall of the limiting groove 471.

[0095] In the above implementation process, the limiting ring 470 helps to hinder the movement of the locking block 123, thereby limiting the rotation range of the drive shaft 120.

[0096] When an electric valve is opened or closed, the valve core is driven to rotate by a drive motor inside the housing. However, the drive motor generates heat during operation, and the housing of the electric valve is not good at dissipating heat, so the drive motor inside the housing is prone to damage at high temperatures.

[0097] In one specific embodiment, a sealing mechanism 500 is provided on the surface of the cover 400. The sealing mechanism 500 includes a horizontal plate 510 and a vertical plate 520. The horizontal plate 510 is slidably disposed inside the cover 400, and a locking block 123 is attached to one side of the horizontal plate 510. The vertical plate 520 is installed on the upper end face of the horizontal plate 510. A first vent 530 is opened on the surface of the cover 400, and a second vent 540 is opened on the surface of the shelf 410. The top of the vertical plate 520 extends sequentially from the second vent 540 and the first vent 530. The vertical plate 520 slides through the hole. An upper sealing strip 550 and a lower sealing strip 560 are installed on the upper end face of the vertical plate 520. The lower end face of the upper sealing strip 550 is sealed and fitted with the upper end face of the shell cover 400. The lower end face of the lower sealing strip 560 is sealed and fitted with the inner top of the shell cover 400. A vertical plate 411 is provided on the surface of the shelf 410. A return spring 570 is installed on the side wall of the vertical plate 411. One side of the return spring 570 is fixedly connected to the vertical plate 520. The vertical plate 520 is located between the return spring 570 and the locking block 123.

[0098] In the above implementation process, when the drive shaft 120 rotates, it drives the locking block 123 to move. The locking block 123 then pushes the horizontal plate 510 to move. The vertical plate 520 on the surface of the horizontal plate 510 then drives the upper sealing strip 550 and the lower sealing strip 560 to move, removing the upper sealing strip 550 and the lower sealing strip 560 from the first vent 530. The hot air inside the cover 400 can then be discharged through the second vent 540 and the first vent 530, which is more conducive to the heat dissipation of the drive motor 300. When the drive shaft 120 reverses, it drives the locking block 123 to return to its original position. When the position is correct, the locking block 123 separates from the horizontal plate 510, and the return spring 570 will support the vertical plate 520 to return to its original position. The upper sealing strip 550 and the lower sealing strip 560 connected to the vertical plate 520 will then seal the first vent 530, improving the sealing performance of the cover 400. When the drive motor 300 drives the drive shaft 120 and the ceramic valve core 110 to perform one forward and one reverse rotation, it will not only open and close the main pipe 100 once, but also open and close the first vent 530. Thus, when the drive motor 300 is working, it can dissipate heat.

[0099] In one specific implementation, the surface of the vertical plate 520 is mounted on the sealing strip 580, and the lower end face of the sealing strip 580 is sealed and fitted to the upper end face of the layer plate 410. At least two vertical plates 520 are provided at intervals on the upper end face of the horizontal plate 510, and the vertical plate 520, the upper sealing strip 550, the lower sealing strip 560 and the sealing strip 580 are provided in a one-to-one correspondence.

[0100] In the above implementation process, the sealing strip 580 is set to seal the second vent 540 on the surface of the layer plate 410, which can reduce the possibility of water flowing into the surface of the drive motor 300 through the second vent 540 and reduce the possibility of damage to the drive motor 300.

[0101] Understandably, when the drive shaft 120 rotates, it will cause the locking block 123 to move. The locking block 123 will then push the horizontal plate 510 to move. The vertical plate 520 on the surface of the horizontal plate 510 will then move the upper sealing strip 550, the lower sealing strip 560, and the sealing strip 580. This will move the upper sealing strip 550 and the lower sealing strip 560 away from the first vent 530, while the sealing strip 580 will move away from the second vent 540. The hot air around the drive unit 300 can then be discharged through the second vent 540 and the first vent 530, which is more conducive to the heat dissipation of the drive unit 300. When shaft 120 reverses and drives block 123 to reset, block 123 separates from horizontal plate 510. Then, reset spring 570 will support vertical plate 520 to reset. The upper sealing strip 550 and lower sealing strip 560 connected to vertical plate 520 will seal the first vent 530, improving the sealing of cover 400. When drive motor 300 drives drive shaft 120 and ceramic valve core 110 to perform one forward and reverse rotation, it will not only open and close main pipe 100, but also open and close the first vent 530. Thus, when drive motor 300 is working, it can dissipate heat.

[0102] Specifically, in use, the electric valve based on the ceramic valve core is driven by the drive motor 300 to rotate the worm 310, which in turn drives the worm wheel 320 and the transmission shaft 210 to rotate. Under the transmission of the transmission component 220, the drive shaft 120 is driven, causing the drive shaft 120 to drive the ceramic valve core 110 to rotate. This allows the main pipeline 100 to be opened and closed, controlling the flow rate within the main pipeline 100. The transmission of the worm 310 and the worm wheel 320 has a reverse self-locking property. With the cooperation of the worm 310 and the worm wheel 320, when the fluid impacts the ceramic valve core 110, there is no possibility of the ceramic valve core 110 and the drive shaft 120 rotating, making the ceramic valve core 110 more stable in use.

[0103] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

Claims

1. An electric valve based on a ceramic valve core, characterized in that, include The main pipe (100) is equipped with a ceramic valve core (110) inside the main pipe (100); A shell plate (200) is mounted on the surface of the main pipe (100). A drive shaft (120) is connected to the surface of the ceramic valve core (110). The top end of the drive shaft (120) passes through the main pipe (100) and the shell plate (200) in sequence. A transmission shaft (210) is rotatably mounted on the surface of the shell plate (200). The transmission shaft (210) and the drive shaft (120) are connected by a transmission component (220). A drive unit (300) is mounted on the surface of the shell plate (200), and the output shaft of the drive unit (300) is driven by a worm (310). The drive shaft (210) is keyed to a worm wheel (320), and the worm (310) and the worm wheel (320) mesh and transmit power. The upper end of the shell plate (200) is provided with a shell cover (400), and the inside of the shell cover (400) is provided with a shelf (410). A rotating shaft (420) is rotatably mounted on the surface of the shelf (410). A rotating component (430) is fastened and adjusted on the surface of the rotating shaft (420), and the side of the rotating component (430) extends to the outside of the shell cover (400). A locking protrusion (440) is provided at the bottom end of the rotating shaft (420). The shell plate (200) has a slot (250). An annular limiting strip (251) is installed in the slot (250), and the surface of the annular limiting strip (251) has a groove that interacts with the locking protrusion. The notch corresponding to the protrusion (440) is inserted into the slot (250) through the annular limiting strip (251) at the bottom end of the rotating shaft (420) and the card protrusion (440). The top end of the rotating shaft (420) penetrates the shell cover (400). A friction plate (450) is provided on the upper end surface of the shell cover (400). An angle plate (460) is installed on the lower end surface of the friction plate (450). The lower end of the angle plate (460) slides through the shell cover (400) and the layer plate (410) in sequence. A support spring (461) is connected between the lower end of the angle plate (460) and the lower end surface of the layer plate (410). A limiting ring (470) is provided on the lower end face of the shelf (410). The top end of the drive shaft (120) is inserted into the inside of the limiting ring (470). A limiting groove (471) is provided on the side wall of the limiting ring (470). A locking block (123) is provided on the shaft of the drive shaft (120). The locking block (123) is slidably inserted into the groove of the limiting groove (471).

2. The electric valve based on a ceramic valve core according to claim 1, characterized in that, Flanges are provided at both ends of the main pipe (100), and a valve cavity is provided in the center of the main pipe (100), with the ceramic valve core (110) located inside the valve cavity.

3. The electric valve based on a ceramic valve core according to claim 1, characterized in that, The ceramic valve core (110) is a spherical valve core, and a water flow channel is provided in the center of the ceramic valve core (110).

4. An electric valve based on a ceramic valve core according to claim 1, characterized in that, The connection between the main pipe (100) and the shell plate (200) is integrally formed, and both the surface of the main pipe (100) and the surface of the shell plate (200) are provided with through holes corresponding to the drive shaft (120).

5. An electric valve based on a ceramic valve core according to claim 1, characterized in that, The shaft of the drive shaft (120) is fastened with a sealing ring (121), and the side wall of the sealing ring (121) is tightly sealed to the inner wall of the main pipe (100).

6. An electric valve based on a ceramic valve core according to claim 1, characterized in that, The shaft of the drive shaft (120) is fitted with an elastic rubber sleeve (122), and the sidewall of the elastic rubber sleeve (122) is fixedly connected to the shell plate (200).

7. An electric valve based on a ceramic valve core according to claim 1, characterized in that, The transmission component (220) includes a drive gear (221) and a driven gear (222). The drive gear (221) is keyed to the transmission shaft (210), and the driven gear (222) is keyed to the drive shaft (120). The drive gear (221) and the driven gear (222) mesh and transmit power.

8. An electric valve based on a ceramic valve core according to claim 1, characterized in that, The drive unit (300) is a drive motor, and the output shaft of the drive unit (300) is fixedly connected to the worm gear (310).

9. An electric valve based on a ceramic valve core according to claim 1, characterized in that, The surface of the shell plate (200) is provided with a support plate (230), and the surface of the support plate (230) is provided with a circuit board (240), which is electrically connected to the drive unit (300).

10. An electric valve based on a ceramic valve core according to claim 9, characterized in that, The support plate (230) has an L-shaped cross section, and the support plate (230) and the drive motor (300) are staggered.

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