Controller of intelligent valve and intelligent valve

Abstract

The utility model discloses a controller of an intelligent valve and the intelligent valve. The controller comprises a shell; a motor; the main shaft is rotationally installed in the shell, the main shaft comprises a connector and a supporting shaft which are connected, and the end, away from the supporting shaft, of the connector is used for being connected with a valve element of the intelligent valve; the reduction gear set is installed in the shell and used for being in transmission connection with a motor and the main shaft so as to drive the main shaft to rotate; the supporting shaft is sleeved with the thrust bearing, the thrust bearing abuts against the shell, and the axial thrust applied to the main shaft by the valve element is transmitted to the shell through the thrust bearing. According to the scheme, the problems that due to borne axial thrust, loss of torque in the non-rotating direction is large, and the transmission efficiency of the speed reducing mechanism is low are effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of electric ball valves, and in particular to a controller of an intelligent valve and an intelligent valve. Background Art

[0002] An electric ball valve is a device that controls the switch state of the ball valve through an electric actuator. Its working principle is to realize the rotation of the ball valve core through the control of the electric actuator, thereby switching the passage state of the fluid. The electric ball valve is composed of a valve body and a controller. The controller drives the valve core in the valve body to rotate to realize the valve switching function. The controller of the existing electric ball valve includes a motor and a reduction mechanism. The reduction mechanism is connected between the motor and the valve core to achieve the purpose of increasing the torque. In the connection structure between the reduction mechanism and the valve core, a connection groove is generally set at the end of the main shaft of the reduction mechanism, and the twist handle of the valve core is inserted into the connection groove. The main shaft of the reduction mechanism is used to drive the valve core to rotate. However, during the rotation process, due to the slight draft phenomenon between the twist handle of the valve core and the contact surface of the connection groove, the main shaft of the reduction mechanism will bear an upward axial thrust, which is transmitted upward from the main shaft to the various levels of reduction gears, resulting in a slight extrusion imbalance problem of the gears. At the same time, the axial thrust borne by the main shaft will act on the cover plate of the reduction box housing, causing sliding friction between the main shaft and the cover plate. As a result, the existing electric ball valve has defects: the torque loss in the non-rotation direction is large and the transmission efficiency of the speed reduction mechanism is low. Utility Model Content

[0003] The purpose of the embodiments of the utility model is to provide a controller of an intelligent valve and an intelligent valve, which can solve the above-mentioned problems existing in the prior art.

[0004] To achieve the above objectives, this application adopts the following technical solutions:

[0005] In one aspect, a controller for an intelligent valve is provided, comprising:

[0006] case;

[0007] Motor;

[0008] A main shaft is rotatably mounted in the housing, the main shaft comprising a connecting head and a supporting shaft connected to each other, and an end of the connecting head away from the supporting shaft is used to connect to the valve core of the smart valve;

[0009] A reduction gear set is installed in the housing and is used to drive the motor and the main shaft to drive the main shaft to rotate;

[0010] A thrust bearing is sleeved outside the support shaft and abuts against the housing. The thrust bearing transmits the axial thrust applied by the valve core to the main shaft to the housing.

[0011] Optionally, a first shaft shoulder is provided on the side of the support shaft. The thrust bearing is sleeved on the support shaft, and one side of the thrust bearing close to the connector abuts against the first shaft shoulder, and the side away from the connector abuts against the housing.

[0012] Optionally, a second shaft shoulder is provided on the side of the support shaft. A shaft sleeve is sleeved on the support shaft. The shaft sleeve abuts against the second shaft shoulder, and the first shaft shoulder is formed on the side of the shaft sleeve away from the second shaft shoulder. And a third shaft shoulder is formed on the side of the shaft sleeve abutting against the second shaft shoulder. The reduction gear set includes at least two layers of transmission gear sets stacked along the axial direction of the support shaft. One of the transmission gear sets abuts against the third shaft shoulder, so that part of the transmission gear sets transmit the axial thrust to the thrust bearing through the shaft sleeve.

[0013] Optionally, the reduction gear set includes an internal gear ring and the transmission gear sets installed inside the internal gear ring. The transmission gear sets include three types of gear sets: a final gear set, an intermediate gear set, and a primary gear set.

[0014] The connector includes a first mounting platform on the side close to the support shaft. A plurality of first mounting shafts arranged circumferentially around the support shaft are provided on the first mounting platform. The final gear set includes a plurality of planetary gears respectively rotatably mounted on each of the first mounting shafts. The planetary gears mesh with the internal gear ring.

[0015] The intermediate gear set includes a central gear and the planetary gears. The central gear is rotatably mounted on the support shaft. The central gear includes a second mounting platform and a gear boss. The gear boss is fixedly connected to the side of the second mounting platform close to the connector. A plurality of second mounting shafts arranged circumferentially around the support shaft are provided on the second mounting platform. Each of the second mounting shafts rotatably mounts one of the planetary gears. The planetary gears mesh with the internal gear ring.

[0016] The primary gear set includes an input gear rotatably mounted on the support shaft. The input gear includes a large gear and a gear boss fixedly connected. The large gear is used for driving connection with the motor.

[0017] In the direction from the primary gear set to the final gear set, the gear boss of the previous transmission gear set meshes with the planetary gear of the next transmission gear set.

[0018] Optionally, multiple groups of the intermediate gear sets are provided, and the third shaft shoulder abuts against one of the second mounting platforms.

[0019] Optionally, a centripetal bearing is also sleeved on one end of the support shaft away from the connection head, and the centripetal bearing is fixed to the housing, and the radial thrust of the main shaft is transmitted to the housing through the centripetal bearing.

[0020] Optionally, the housing includes a bottom shell, a middle partition plate and an upper shell cover. A first installation cavity penetrating along the axial direction of the main shaft is formed inside the bottom shell, and the main shaft and the reduction gear set are installed in the first installation cavity; the middle partition plate is fixed to one side of the bottom shell away from the connection head, and the middle partition plate is provided with a through hole allowing the support shaft to pass through; the upper shell cover covers one side of the middle partition plate away from the bottom shell; the thrust bearing is fixed to one side of the middle partition plate close to the connection head, the centripetal bearing is fixed to one side of the middle partition plate away from the connection head, and the support shaft penetrates through the thrust bearing and the through hole and extends upward to connect the centripetal bearing.

[0021] Optionally, an installation ring coaxial with the through hole protrudes from one side of the middle partition plate close to the connection head, and the thrust bearing is fixed in the installation ring.

[0022] Optionally, the middle partition plate is locked to the bottom shell by screws.

[0023] Optionally, a rotating installation sleeve is provided on one side of the bottom shell away from the middle partition plate, and the connection head is rotatably installed in the rotating installation sleeve; and a sealing ring is provided between the rotating installation sleeve and the connection head.

[0024] On the other hand, an intelligent valve is provided, including a valve body and the above-mentioned controller. The valve body includes a valve housing and a valve core rotatably installed in the valve housing. The valve core includes a rotating handle extending outside the valve housing, and the rotating handle is connected to the connection head of the controller.

[0025] Optionally, the connection head has a plug-in slot matching with the rotating handle, the rotating handle is plugged into the plug-in slot, and the rotating handle and the plug-in slot are in clearance fit in the axial direction.

[0026] Optionally, the intelligent valve is an electric ball valve, and the valve core is a ball core valve core.

[0027] The beneficial effects of the present application are as follows: The present utility model provides a controller for an intelligent valve. A thrust bearing is sleeved on the main shaft of the speed reduction mechanism, and the thrust bearing abuts against the housing. Thus, when the main shaft bears an axial thrust, this axial thrust will act on the housing through the thrust bearing. In this solution, based on the axial limit of the main shaft by the thrust bearing, it can effectively prevent the main shaft from moving in the axial direction when subjected to the axial thrust, and further effectively prevent the main shaft from transmitting the axial force to the reduction gear set. At the same time, it can also prevent the main shaft from directly contacting the housing and avoid sliding friction between the main shaft and the housing. Therefore, this solution effectively solves the problems such as large loss of torque in the non-rotating direction due to the axial thrust borne and low transmission efficiency of the speed reduction mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The following further elaborates on the present application in detail with reference to the drawings and embodiments.

[0029] Figure 1 is a schematic structural diagram of the controller for the intelligent valve according to the embodiment of the present application;

[0030] Figure 2 is an axial sectional view of the controller according to the embodiment of the present application;

[0031] Figure 3 is Figure 2 an enlarged view of area A in

[0032] Figure 4 is an exploded view of the controller according to the embodiment of the present application;

[0033] Figure 5 is one of the exploded views of the internal structure of the controller according to the embodiment of the present application;

[0034] Figure 6 is another exploded view of the internal structure of the controller according to the embodiment of the present application;

[0035] Figure 7 is yet another exploded view of the internal structure of the controller according to the embodiment of the present application; Figure 8 is a schematic structural diagram of the main shaft according to the embodiment of the present application;

[0036] Figure 9 is a schematic structural diagram of the central gear according to the embodiment of the present application;

[0037] Figure 10 is a schematic structural diagram of the input gear according to the embodiment of the present application;

[0038] Figure 11 is a schematic structural diagram of the bottom shell according to the embodiment of the present application;

[0039] Figure 12 is a schematic structural diagram of the intelligent valve according to the embodiment of the present application.

[0040] In the figure:

[0041] 1. Housing; 11. Bottom shell; 111. Rotating mounting sleeve; 12. Middle partition board; 121. Mounting ring; 13. Upper shell cover; 2. Main shaft; 21. Connector; 211. First mounting platform; 212. First mounting shaft; 22. Support shaft; 221. First shaft shoulder; 222. Second shaft shoulder; 223. Third shaft shoulder; 224. Bush; 3. Reduction gear set; 31. First-stage gear set; 32. Intermediate gear set; 33. Final-stage gear set; 35. Central gear; 351. Second mounting platform; 352. Gear boss; 353. Second mounting shaft; 36. Input gear; 361. Large gear; 37. Internal gear ring; 4. Thrust bearing; 5. Radial bearing; 6. Sealing ring; 7. Motor; 71. Driving gear; 8. Valve body. Detailed implementation manners

[0042] To make the technical problems solved by this application, the technical solutions adopted and the achieved technical effects clearer, the following further details the technical solutions of the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, rather than all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of this application.

[0043] In the description of this application, unless otherwise clearly specified and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific situations.

[0044] In this application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above and over", and "on the top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below and under", and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0045] An electric ball valve is a device that controls the switch state of the ball valve through an electric actuator. Its working principle is to realize the rotation of the ball valve core through the control of the electric actuator, thereby switching the passage state of the fluid. The electric ball valve is composed of a valve body and a controller. The controller drives the valve core in the valve body to rotate to realize the valve switching function. The controller of the existing electric ball valve includes a motor and a reduction mechanism. The reduction mechanism is connected between the motor and the valve core to achieve the purpose of increasing the torque. In the connection structure between the reduction mechanism and the valve core, a connection groove is generally set at the end of the main shaft of the reduction mechanism, and the twist handle of the valve core is inserted into the connection groove. The main shaft of the reduction mechanism is used to drive the valve core to rotate. However, during the rotation process, due to the slight draft phenomenon between the twist handle of the valve core and the contact surface of the connection groove, the main shaft of the reduction mechanism will bear an upward axial thrust, which is transmitted upward from the main shaft to the various levels of reduction gears, resulting in a slight extrusion imbalance problem of the gears. At the same time, the axial thrust borne by the main shaft will act on the cover plate of the reduction box housing, causing sliding friction between the main shaft and the cover plate. As a result, the existing electric ball valve has defects: the torque loss in the non-rotation direction is large and the transmission efficiency of the speed reduction mechanism is low.

[0046] In order to overcome the above technical problems, the present embodiment provides a controller for an intelligent valve, which provides reliable axial support measures for the main shaft 2 in the reduction mechanism, thereby reducing the axial freedom of movement of the main shaft 2 when it is subjected to axial thrust, thereby reducing the extent to which the main shaft 2 transmits the axial force to the gear and the housing 1, thereby achieving the purpose of reducing the torque loss in the non-rotational direction and improving the transmission efficiency.

[0047] The above-mentioned smart valve can be in the form of a ball valve, a butterfly valve, a gate valve, etc. The smart valve includes a valve body 8 and a controller. The valve body 8 includes a valve shell and a valve core installed in the valve shell. The valve core includes a rotating handle extending outside the valve shell. The rotating handle is connected to the controller, and the valve core is driven to rotate by the controller. The valve core can be in the shape of a sphere, a hemisphere, a cylinder, other cylinders, etc.

[0048] The controller of this embodiment includes a housing 1, a motor 7, a main shaft 2, a reduction gear set 3 and a thrust bearing 4. The main shaft 2 is rotatably installed in the housing 1. The main shaft 2 includes a connected connector 21 and a support shaft 22. The end of the connector 21 away from the support shaft 22 is used to connect the valve core; the reduction gear set 3 is installed in the housing 1, and is used to transmit and connect the motor 7 and the main shaft 2 to drive the main shaft 2 to rotate; the thrust bearing 4 is sleeved on the outside of the support shaft 22, and the thrust bearing 4 abuts against the housing 1, and the axial thrust applied by the valve core to the main shaft 2 is transmitted to the housing 1 through the thrust bearing 4.

[0049] When the controller of this embodiment is specifically applied, the reduction gear set 3 is drivingly connected to the motor 7, and the connector 21 of the main shaft 2 is connected to the valve core. When the motor 7 drives the reduction gear set 3 to operate, the reduction gear set 3 can push the main shaft 2 to rotate, thereby driving the valve core to rotate.

[0050] In an electric ball valve, during operation, under the action of the draft phenomenon, the main shaft 2 will bear an axial thrust in the direction from the connector 21 to the support shaft 22. Therefore, the thrust bearing 4 should be arranged to bear this axial thrust. That is, specifically when setting, the side of the thrust bearing 4 close to the connector 21 should contact the support shaft 22 to form a limit, and the side of the thrust bearing 4 far from the connector 21 should contact the housing 1 to form a limit. Specifically in implementation, according to the actual layout, the thrust bearing 4 can be sleeved on the middle or end of the support shaft 22; in the structure of the housing 1, the end cover of the housing 1 can be directly used to support the thrust bearing 4, or a structure with a large bearing capacity can be arranged in the housing 1 to support the thrust bearing 4.

[0051] It can be understood that the reduction gear set 3 includes multiple gears with different numbers of teeth. Through the meshing transmission of different gears, the purpose of reducing the speed and increasing the torque is achieved, and the purpose of driving the valve core with large resistance to rotate with the small torque output by the motor 7 is achieved. According to the actual reduction ratio and spatial layout, the existing combination methods of reduction gears can be applied to this embodiment to achieve the function of reduction transmission.

[0052] In summary, based on the controller of the intelligent valve of this embodiment, a thrust bearing 4 is sleeved on the main shaft 2 of the controller, and the thrust bearing 4 abuts against the housing 1. Thus, when the main shaft 2 bears an axial thrust, this axial thrust will act on the housing 1 through the thrust bearing 4. In this solution, based on the limit of the thrust bearing 4 on the main shaft 2 in the axial direction, the axial movement of the main shaft 2 when subjected to the axial thrust can be effectively avoided, and further, the axial force is effectively prevented from being transmitted to the reduction gear set 3 by the main shaft 2. At the same time, it can also prevent the main shaft 2 from directly contacting the housing 1 and avoid sliding friction between the main shaft 2 and the housing 1. Therefore, this solution effectively solves the problems such as large loss of torque in the non-rotating direction and low transmission efficiency of the controller due to the axial thrust borne.

[0053] Optionally, the thrust bearing 4 is any one of an angular contact ball bearing, a thrust ball bearing or a thrust roller bearing.

[0054] In one embodiment, referring to Figure 3 , a first shaft shoulder 221 is provided on the side of the support shaft 22 facing away from the side where the connector 21 is located. The thrust bearing 4 is sleeved on the support shaft 22, and the side of the thrust bearing 4 close to the connector 21 abuts against the first shaft shoulder 221, and the side of the thrust bearing 4 far from the connector 21 abuts against the housing 1.

[0055] The first shaft shoulder 221 specifically provides a support surface perpendicular to the axial direction, which is exactly located on the support shaft 22 and is arranged on the side facing away from the connector 21. By using the first shaft shoulder 221 provided on the support shaft 22, the thrust bearing 4 is sleeved on the support shaft 22 and contacts the first shaft shoulder 221, which can achieve uniform support for the support shaft 22 in the circumferential direction, enabling the support shaft 22 to better transmit the axial thrust uniformly to the thrust bearing 4 and improving the stability of the contact between the main shaft 2 and the thrust bearing 4.

[0056] In one embodiment, referring to Figure 3 and Figure 6 , a second shaft shoulder 222 is provided on the side of the support shaft 22 facing away from the side where the connector 21 is located. A bushing 224 is sleeved on the support shaft 22, and the bushing 224 abuts against the second shaft shoulder 222. The first shaft shoulder 221 is formed on the side of the bushing 224 away from the second shaft shoulder 222, and a third shaft shoulder 223 facing the side where the connector 21 is located is formed on the side of the bushing 224 abutting against the second shaft shoulder 222; the reduction gear set 3 includes at least two layers of transmission gear sets stacked in the axial direction of the support shaft 22, and one of the transmission gear sets abuts against the third shaft shoulder 223, so that part of the transmission gear sets transmit the axial thrust to the thrust bearing 4 through the bushing 224.

[0057] Specifically, the reduction gear set 3 is stacked in the axial direction of the support shaft 22. This design not only saves space but also makes the transmission path more compact and efficient. Each layer of the transmission gear set is responsible for a certain reduction ratio, and a large total reduction ratio can be achieved through the superposition of multiple layers of gear sets, so as to meet the specific requirements of the electric ball valve for torque and speed.

[0058] The bushing 224 is sleeved on the support shaft 22 and abuts against the second shaft shoulder 222. The second shaft shoulder 222 is provided on the side of the support shaft 22 facing away from the side where the connector 21 is located. It serves as a limiting point for the bushing 224 to ensure the stable position of the bushing 224 on the support shaft 22. The first shaft shoulder 221 is formed on the side of the bushing 224 away from the second shaft shoulder 222, enabling the support shaft 22 to transmit the axial thrust to the thrust bearing 4 through the bushing 224.

[0059] Importantly, a third shaft shoulder 223 is formed by the bushing 224 abutting against one side of the second shaft shoulder 222, and the third shaft shoulder 223 faces the side where the connector 21 is located. One set of transmission gear sets abuts against the third shaft shoulder 223, so that the axial thrust borne by the transmission gear sets between the third shaft shoulder 223 and the connector 21 can be indirectly transmitted to the thrust bearing 4 through the bushing 224, thereby preventing this part of the transmission gear sets from continuously transmitting the axial thrust to other transmission gear sets, reducing the offset of each transmission gear set in the axial direction, making the rotation of each level of transmission gear sets more natural, reducing the torque loss in the non-rotating direction, and thus improving the efficiency of the reduction gearbox.

[0060] Generally speaking, the closer the transmission gear set is to the connector 21, the greater the axial thrust exerted by the connector 21 it bears. Therefore, generally, only one set, two sets or three sets of transmission gear sets close to the connector 21 need to be provided with axial support. Therefore, the third shaft shoulder 223 of the bushing 224 abuts against one set, two sets or three sets of transmission gear sets close to the connector 21.

[0061] In summary, this embodiment adopts a two-stage axial protection structure, using the bushing 224 to provide axial support for the main shaft 2 and some of the transmission gear sets that bear relatively large axial thrust, realizing double protection for the main shaft 2 and the transmission gear sets, effectively preventing the axial thrust from acting on the reduction gear set 3, and effectively improving the transmission efficiency and reliability of the controller.

[0062] In one embodiment, in combination with Figures 4 - 11 , the reduction gear set 3 includes an internal gear ring 37 and the transmission gear sets installed inside the internal gear ring 37. The transmission gear sets include three types of gear sets: a final gear set 33, an intermediate gear set 32, and a primary gear set 31. The layer closest to the connector 21 is the final gear set 33, the layer farthest from the connector 21 is the primary gear set 31, and the intermediate gear set 32 is located between the final gear set 33 and the primary gear set 31;

[0063] The connector 21 includes a first mounting platform 211 on the side close to the support shaft 22. A plurality of first mounting shafts 212 arranged circumferentially around the support shaft 22 are provided on the first mounting platform 211. The final gear set 33 includes a plurality of planetary gears respectively rotatably mounted on each of the first mounting shafts 212, and the planetary gears mesh with the internal gear ring 37;

[0064] The intermediate gear set 32 includes a central gear 35 and the planetary gears. The central gear 35 is rotatably mounted on the support shaft 22. The central gear 35 includes a second mounting platform 351 and a gear boss 352. The gear boss 352 is fixedly connected to one side of the second mounting platform 351 close to the connector 21. A plurality of second mounting shafts 353 arranged circumferentially around the support shaft 22 are provided on the second mounting platform 351. Each of the second mounting shafts 353 rotatably mounts one of the planetary gears. The planetary gears mesh with the internal gear ring 37;

[0065] The first-stage gear set 31 includes an input gear 36 rotatably mounted on the support shaft 22. The input gear 36 includes a large gear 361 and a gear boss 352 fixedly connected thereto. The large gear 361 is used for driving connection with the motor 7;

[0066] In the direction from the first-stage gear set 31 to the last-stage gear set 33, the gear boss 352 of the previous transmission gear set meshes with the planetary gear of the next transmission gear set.

[0067] During the specific transmission process, from the first-stage gear set 31 to the last-stage gear set 33, the power is gradually transmitted through the meshing of the gears to achieve the purpose of multi-stage speed reduction transmission. Specifically, the motor 7 is connected with a driving gear 71 meshing with the large gear 361. The power of the motor 7 is first transmitted to the input gear 36 of the first-stage gear set 31, and then transmitted to the planetary gear of the intermediate gear set 32 through the gear boss 352 of the input gear 36. The planetary gear of the intermediate gear set 32 meshes with the internal gear ring 37 and rotates around the inner circumference of the internal gear ring 37. During the rotation process, the central gear 35 connected thereto is driven to rotate. The central gear 35 meshes with the planetary gear of the next-stage transmission gear set through its gear boss 352 again to achieve further transmission of the power. Finally, the planetary gear of the last-stage gear set 33 transmits the power to the connector 21 to drive components such as the valve core to move.

[0068] The multi-layer transmission gear sets of this solution are stacked, saving space, making the entire controller more compact, and achieving the transmission effect of a large reduction ratio.

[0069] In one embodiment, multiple sets of the intermediate gear sets 32 are provided, and the third shaft shoulder 223 abuts against one of the second mounting platforms 351.

[0070] Specifically, the second mounting platform 351 needs to be able to rotate relatively stably with respect to the support shaft 22. Therefore, the shaft hole at the center of the second mounting platform 351 will have an interference fit with the support shaft 22, that is, the second mounting platform 351 will be close to the support shaft 22, and the third shaft shoulder 223 abuts against the second mounting platform 351. At this time, the third shaft shoulder 223 does not need to protrude too much distance relative to the support shaft 22 to abut against the second mounting platform 351 to provide support, and all the gears between the second mounting platform 351 and the connector 21 are transmitted through the second mounting platform 351, achieving the purpose of providing axial support for multiple gears through a simple structure.

[0071] In one embodiment, a radial bearing 5 is further sleeved on the end of the support shaft 22 away from the connector 21, and the radial bearing 5 is fixed to the housing 1. The radial thrust of the main shaft 2 is transmitted to the housing 1 through the radial bearing 5.

[0072] Providing radial support for the support shaft 22 through the radial bearing 5 can reduce the vibration and offset of the main shaft 2 and the reduction gear set 3 in the radial direction, and improve the overall stability of the controller.

[0073] In one embodiment, the housing 1 includes a bottom shell 11, a middle partition 12 and an upper shell cover 13. A first installation cavity penetrating along the axial direction of the main shaft 2 is formed inside the bottom shell 11, and the main shaft 2 and the reduction gear set 3 are installed in the first installation cavity; the middle partition 12 is fixed to the side of the bottom shell 11 away from the connector 21, and the middle partition 12 is provided with a through hole allowing the support shaft 22 to pass through; the upper shell cover 13 covers the side of the middle partition 12 away from the bottom shell 11; the thrust bearing 4 is fixed to the side of the middle partition 12 close to the connector 21, the radial bearing 5 is fixed to the side of the middle partition 12 away from the connector 21, and the support shaft 22 passes through the thrust bearing 4 and the through hole and extends upward to connect the radial bearing 5.

[0074] A thrust bearing 4 is fixed to the side of the middle partition 12 close to the connector 21. This bearing is responsible for transmitting the axial thrust from the connector 21 to the housing 1 to protect the main shaft 2 and the gear set from damage. A radial bearing 5 is fixed to the side of the middle partition 12 away from the connector 21. This bearing is used to bear the radial thrust generated during the rotation of the main shaft 2 and transmit it to the housing 1 to ensure the stable operation of the main shaft 2.

[0075] This solution adopts the method of setting a through hole in the middle partition 12 for the support shaft 22 to pass through, so that the thrust bearing 4 and the radial bearing 5 can be respectively arranged on both sides of the middle partition 12, and the support shaft 22 can be connected to the thrust bearing 4 and the radial bearing 5 at the same time, achieving the compactness of the structure while meeting the requirement of providing reliable support.

[0076] In this solution, the axial thrust and radial force applied by the support shaft 22 will act on the middle partition plate 12 through the bearing. Therefore, the middle partition plate 12 is preferably made of a material with higher strength, preferably a metal material such as aluminum alloy, steel, etc. The upper shell cover 13 mainly serves as a sealing and appearance shell and is not used as a main load-bearing structure, so a plastic structure with lower cost can be adopted. Therefore, the structure of the solution in this embodiment has the advantages of low cost while ensuring reliability.

[0077] In addition, the independent space formed between the middle partition plate 12 and the upper shell cover 13 can also be used to arrange the circuit board required in the controller, realizing the separation of the circuit board and the reduction gearbox and avoiding mutual influence between the two.

[0078] Wherein, gear teeth are provided on the inner wall of the bottom shell 11 to form the above-mentioned internal gear ring 37.

[0079] In one embodiment, an installation ring 121 coaxial with the through hole protrudes from one side of the middle partition plate 12 close to the connection head 21, and the thrust bearing 4 is fixed in the installation ring 121.

[0080] The design of the installation ring 121 helps to ensure the coaxiality of the thrust bearing 4 and the support shaft 22, improve the installation accuracy, improve the reliability of the installation of the thrust bearing 4, and further enhance the stability of the support shaft 22.

[0081] In one embodiment, the middle partition plate 12 is locked to the bottom shell 11 by screws.

[0082] The middle partition plate 12 is locked to the bottom shell 11 by screws, which can ensure the reliability of its connection with the bottom shell 11, and further provide a reliable support for the main shaft 2, improving the stability of the operation of the reduction gear set 3.

[0083] In one embodiment, referring to Figure 2 , a rotating installation sleeve 111 is provided on one side of the bottom shell 11 away from the middle partition plate 12, and the connection head 21 is rotatably installed in the rotating installation sleeve 111; and a sealing ring 6 is provided between the rotating installation sleeve 111 and the connection head 21.

[0084] Providing the sealing ring 6 between the rotating installation sleeve 111 and the connection head 21 can prevent the lubricating oil in the controller from leaking, avoid the pollution problem caused by the leakage of the lubricating oil, and ensure the long-term stable operation of the controller.

[0085] On the other hand, referring to Figure 12 , an intelligent valve is provided, including a valve body 8 and the above-mentioned controller. The valve body 8 includes a valve housing and a valve core rotatably installed in the valve housing. The valve core includes a rotating handle extending outside the valve housing, and the rotating handle is connected to the connection head 21 of the controller.

[0086] Similarly, based on the controller of this embodiment, the electric ball valve of this embodiment has the advantages of stable operation and good reliability.

[0087] In one embodiment, the connector 21 has a socket slot that mates with the rotating handle. The rotating handle is inserted into the socket slot, and the rotating handle and the socket slot are in clearance fit in the axial direction.

[0088] Specifically, setting the mating mode of the socket slot of the connector 21 and the rotating handle to be in clearance fit in the axial direction can reduce the draft angle that occurs when the main shaft 2 drives the rotating handle to rotate, thereby reducing the axial thrust borne by the main shaft 2, and thus reducing the influence of the axial thrust on the efficiency of the reduction mechanism.

[0089] In one embodiment, the intelligent valve is an electric ball valve, and the valve core is a ball core valve core.

[0090] In the description of this article, it should be understood that the orientation or positional relationships such as "upper", "lower", "left", "right", etc. are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to this application. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0091] In the description of this specification, the description referring to terms such as "one embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0092] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0093] The above describes the technical principles of this application in combination with specific embodiments. These descriptions are only for explaining the principles of this application and cannot be construed as limiting the protection scope of this application in any way. Based on the explanations here, those skilled in the art can think of other specific implementation manners of this application without creative labor, and these manners will all fall within the protection scope of this application.

Claims

1. A controller for an intelligent valve, characterized in that, Comprising: A housing (1); A motor (7); A main shaft (2), rotatably mounted within the housing (1), the main shaft (2) includes a connected connector (21) and a support shaft (22), and one end of the connector (21) away from the support shaft (22) is used to connect the valve core of the intelligent valve; A reduction gear set (3), mounted within the housing (1), for drivingly connecting the motor (7) and the main shaft (2) to drive the main shaft (2) to rotate; A thrust bearing (4), sleeved outside the support shaft (22), and the thrust bearing (4) abuts against the housing (1), and the axial thrust applied by the valve core to the main shaft (2) is transmitted to the housing (1) through the thrust bearing (4).

2. The controller of the intelligent valve according to claim 1, wherein A first shaft shoulder (221) is provided on the side of the support shaft (22), the thrust bearing (4) is sleeved on the support shaft (22), and one side of the thrust bearing (4) close to the connector (21) abuts against the first shaft shoulder (221), and the side away from the connector (21) abuts against the housing (1).

3. The controller of the intelligent valve according to claim 2, wherein A second shaft shoulder (222) is provided on the side of the support shaft (22), a shaft sleeve (224) is sleeved on the support shaft (22), the shaft sleeve (224) abuts against the second shaft shoulder (222), and the first shaft shoulder (221) is formed on the side of the shaft sleeve (224) away from the second shaft shoulder (222), and a third shaft shoulder (223) is formed on the side of the shaft sleeve (224) abutting against the second shaft shoulder (222); the reduction gear set (3) includes at least two layers of transmission gear sets stacked along the axial direction of the support shaft (22), and one set of the transmission gear sets abuts against the third shaft shoulder (223), so that part of the transmission gear sets transmit the axial thrust to the thrust bearing (4) through the shaft sleeve (224).

4. The controller of the intelligent valve according to claim 3, wherein, The reduction gear set (3) includes an internal gear ring (37) and the transmission gear sets installed inside the internal gear ring (37), and the transmission gear sets include three types of gear sets: a final gear set (33), an intermediate gear set (32), and a first-stage gear set (31); The connector (21) includes a first mounting platform (211) on the side close to the support shaft (22), and a plurality of planet gears rotatably arranged around the support shaft (22) are provided on the first mounting platform (211), and the planet gears mesh with the internal gear ring (37); The intermediate gear set (32) includes a central gear (35) and the planet gears, the central gear (35) is rotatably mounted on the support shaft (22), the central gear (35) includes a second mounting platform (351) and a gear boss (352), the gear boss (352) is fixedly connected to the side of the second mounting platform (351) close to the connector (21), and a plurality of the planet gears rotatably arranged around the support shaft (22) are provided on the second mounting platform (351), and the planet gears mesh with the internal gear ring (37); The first-stage gear set (31) includes an input gear (36) rotatably mounted on the support shaft (22). The input gear (36) includes a large gear (361) and a gear boss (352) fixedly connected thereto. The large gear (361) is used for driving connection with the motor (7). In the direction from the first-stage gear set (31) to the last-stage gear set (33), the gear boss (352) of the previous transmission gear set meshes with the planetary gear of the next transmission gear set.

5. The controller of the intelligent valve according to claim 4, characterized in that, A plurality of intermediate gear sets (32) are provided, and the third shaft shoulder (223) abuts against one of the second mounting platforms (351).

6. The controller of the intelligent valve according to claim 2, characterized in that, A centripetal bearing (5) is also sleeved on one end of the support shaft (22) away from the connector (21), and the centripetal bearing (5) is fixed to the housing (1). The radial thrust of the main shaft (2) is transmitted to the housing (1) through the centripetal bearing (5).

7. The controller of the intelligent valve according to claim 6, characterized in that, The housing (1) includes a bottom case (11), a middle partition plate (12) and an upper cover (13). A first installation cavity penetrating along the axial direction of the main shaft (2) is formed inside the bottom case (11). The main shaft (2) and the reduction gear set (3) are installed in the first installation cavity. The middle partition plate (12) is fixed to the side of the bottom case (11) away from the connector (21), and the middle partition plate (12) is provided with a through hole allowing the support shaft (22) to pass through. The upper cover (13) is covered on the side of the middle partition plate (12) away from the bottom case (11). The thrust bearing (4) is fixed to the side of the middle partition plate (12) close to the connector (21), the centripetal bearing (5) is fixed to the side of the middle partition plate (12) away from the connector (21), and the support shaft (22) penetrates through the thrust bearing (4) and the through hole and extends upward to connect with the centripetal bearing (5).

8. The controller of the intelligent valve according to claim 7, characterized in that, An installation ring (121) coaxial with the through hole protrudes on the side of the middle partition plate (12) close to the connector (21), and the thrust bearing (4) is fixed in the installation ring (121).

9. The controller of the intelligent valve according to claim 7, wherein, The middle partition plate (12) is fixed to the bottom case (11) by screws.

10. The controller of the intelligent valve according to claim 7, characterized in that, A rotating installation sleeve (111) is provided on the side of the bottom case (11) away from the middle partition plate (12), and the connector (21) is rotatably installed in the rotating installation sleeve (111); and a sealing ring (6) is provided between the rotating installation sleeve (111) and the connector (21).

11. An intelligent valve, characterized in that, It includes a valve body (8) and the controller according to any one of claims 1-10. The valve body (8) includes a valve housing and a valve core rotatably installed in the valve housing. The valve core includes a rotating handle extending outside the valve housing, and the rotating handle is connected to the connector (21) of the controller.

12. The intelligent valve according to claim 11, wherein, The connector (21) has a plug-in groove matching with the rotating handle. The rotating handle is plugged into the plug-in groove, and the rotating handle and the plug-in groove are in clearance fit in the axial direction.

13. The intelligent valve according to claim 11, characterized in that, The intelligent valve is an electric ball valve, and the valve core is a ball core valve core.

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