Stop valve with motor

Abstract

The utility model relates to the technical field of valves, in particular to a stop valve with a motor. The stop valve with the motor comprises a valve body, a valve element assembly and the motor, a first opening and a second opening are formed in the valve body, the valve body assembly comprises a movable valve element and a static valve element, the static valve element is arranged in the valve body and located between the first opening and the second opening, a first through hole is formed in the static valve element, and the end, close to the static valve element, of the movable valve element abuts against the static valve element; when the movable valve element rotates into the projection area of the first through hole in the axis direction of the static valve element, the movable valve element covers the first through hole, and the motor is connected with the movable valve element. The stop valve with the motor has the advantages that the movable valve element can rapidly close or open the first through hole through rotation, the opening and closing efficiency of the device is improved, the requirement for the motor is low, the load of the motor is small, the valve element assembly does not need to move up and down in the axial direction to achieve valve opening and closing, and therefore the overall height of the stop valve with the motor is reduced, and space is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a stop valve with a motor. Background Art

[0002] The stop valve is widely used in the pipelines of air-conditioning systems to control the on-off of the pipelines. The stop valve usually includes a valve body and a valve core. The valve body has at least two openings. The valve core moves inside the valve body and abuts against the valve port of the valve body to achieve the connection or isolation between the two openings on the valve body. In order to facilitate the movement of the valve core, flammable refrigerant is used inside the air-conditioning system. When the refrigerant production line leaks, the air-conditioning passage needs to be quickly closed to cut off the refrigerant flow. Therefore, an electric stop valve is required. The motor is connected to the valve core and drives the valve core to rotate to control the on-off of the pipeline.

[0003] However, since the valve core and valve body of the existing electric stop valve are usually threaded, when the flow channel needs to be closed or opened, the valve core needs to be rotated to move the valve core relative to the valve body. The stop valve can only be cut off by the axial movement of the valve core and the hard seal against the valve port. Therefore, when the motor drives the valve core to rotate, it is usually necessary to drive the valve core to rotate thousands of degrees to move the valve core to the specified position. In this process, the movement of the valve core is slow and the efficiency is low. In addition, the contact area of ​​the threaded match is large, the friction force is large, and the valve core material needs to be deformed by the large torque of the motor to achieve hard sealing. The torque requirements for the motor are high and the motor load is large. In addition, the threaded matching structure is prone to slipping, resulting in failure of the threaded part. Utility Model Content

[0004] Based on this, the utility model provides a stop valve with a motor to solve the above technical problems.

[0005] A stop valve with a motor, the stop valve with a motor comprising: a valve body, the valve body being provided with a first opening and a second opening; a valve core assembly, the valve core assembly comprising a moving valve core and a static valve core, the static valve core being arranged in the valve body and being located between the first opening and the second opening, the static valve core being provided with a first through hole, the first through hole being able to connect the first opening and the second opening; the moving valve core abutting against the static valve core at one end close to the static valve core, and being able to rotate relative to the static valve core, when the moving valve core rotates to within the projection area of ​​the first through hole in the axial direction of the static valve core, the moving valve core covers the first through hole, and the first opening and the second opening are in a disconnected state; a motor, the motor being connected to the moving valve core.

[0006] With such a configuration, the first opening and the second opening on the valve body are used for the inflow and outflow of the medium. When the moving valve core blocks the first through hole, the first through hole and the second through hole are separated, and the stop valve is in a closed state. When the moving valve core releases the blockage of the first through hole as the valve core rod rotates, the stop valve is in an open state. Therefore, the opening and closing of the stop valve depends on whether the moving valve core blocks, that is, covers the first through hole. The moving valve core blocks the first through hole by rotating. This operation method is different from the method in which the valve core realizes axial movement by cooperating with the valve body thread. It is faster and more efficient. The opening and closing efficiency of the stop valve is high, and the torque requirement for the motor is low, the load of the motor is small, and the problem of slipping of the threaded matching structure is avoided. In addition, since the valve core assembly does not need to realize the switch valve by axial up and down movement, the overall height of the stop valve with a motor is reduced, saving space.

[0007] In one embodiment, the valve core assembly also includes a valve core shell and a valve core rod, the valve core shell is arranged inside the valve body, and a hollow cavity is constructed in the valve core shell, and a second through hole is also opened on the cavity wall of the hollow cavity, the hollow cavity can be connected with the first opening through the first through hole, and the hollow cavity is connected with the second opening through the second through hole; the valve core rod is located in the hollow cavity, one end of the valve core rod is connected to the motor, and the other end is connected to the moving valve core, the valve core shell and the valve core rod are coaxially arranged, and the valve core rod can rotate around its own axis to drive the moving valve core to rotate.

[0008] In this way, because the first through hole is connected to the first opening, and the second through hole is connected to the second opening, when the stop valve is in an open state, the medium flows in from the first opening and then flows out of the valve body from the second opening through the first through hole and the second through hole. Since the valve core housing and the valve core rod are coaxially arranged, the valve core rod can freely rotate along the axis of the valve core housing in the valve core housing, thereby driving the movable valve core to rotate, and causing the movable valve core to block or open the first through hole.

[0009] In one embodiment, at least a portion of the outer circumference of the static valve core is circular, and the outer circumference of the static valve core is circumferentially abutted against the inner wall of the valve core housing, at least a portion of the outer circumference of the dynamic valve core is circular, and the static valve core and the dynamic valve core are coaxially arranged.

[0010] In one embodiment, there are at least two first through holes, and at least two of the first through holes are rotationally symmetrical about the center of the static valve core.

[0011] In one embodiment, the first through hole is fan-shaped, and the movable valve core includes a connecting section and a plurality of blocking sections, the plurality of blocking sections are located at the periphery of the connecting section and are all connected to the connecting section, and the blocking section is also arranged in a fan shape, and as the movable valve core rotates, each of the blocking sections is correspondingly covered on one of the first through holes.

[0012] In one embodiment, there are two first through holes, which are symmetrically arranged with respect to the center of the static valve core. At least one positioning block is protruding from the inner wall of the hollow cavity formed by the valve core shell. As the valve core rod rotates, the valve core rod abuts against the positioning block, and the line connecting the midpoint of the positioning block and the center of the static valve core forms an angle of 90° with the line connecting the midpoints of the two first through holes.

[0013] In one embodiment, at least one limiting protrusion is provided on the outer peripheral side of the static valve core, and at least one limiting groove is opened on the inner wall of the valve core housing, and the limiting protrusion is embedded in the limiting groove.

[0014] In one embodiment, a matching groove is provided on the movable valve core, and a matching protrusion is provided at one end of the valve core rod close to the movable valve core, and the matching protrusion is correspondingly inserted into the matching groove.

[0015] In one embodiment, the valve core shell is arranged in the valve body, the valve core rod is arranged in the valve core shell and cooperates with the valve core shell to form the valve core assembly, and the valve core assembly further includes a first sealing gasket and a second sealing gasket, the first sealing gasket is located at an end of the valve core rod away from the first opening, and is pressed by the valve core rod on the inner wall of the hollow cavity, and the second sealing gasket is located at an end of the valve core shell close to the first opening, and is located between the valve core shell and the valve body, and is pressed by the valve core shell on the valve body;

[0016] At least one sealing groove is formed on the outer peripheral side of the valve core rod, a first sealing ring is embedded in the sealing groove, and the outer peripheral side of the first sealing ring abuts against the inner wall of the hollow cavity formed by the valve core housing.

[0017] In one embodiment, the valve core shell is threadedly connected to the valve body, and the valve core assembly also includes a second sealing ring, which is located at an end of the valve core shell away from the first opening and is pressed against the valve body by the valve core shell; or, the valve core shell is connected to the valve body by welding.

[0018] Compared with the prior art, the utility model sets a valve core shell, a valve core rod and a moving valve core, and limits the valve core rod through the valve core shell, so that the valve core rod can rotate in the valve body, and drive the moving valve core to block or open the first through hole, so as to realize the opening or closing of the stop valve with a motor. This operation method is different from the method in which the valve core realizes axial movement by cooperating with the valve body thread. It is faster and more efficient, the opening and closing efficiency of the stop valve is high, and the torque requirement for the motor is low, the load of the motor is small, and the problem of thread slippage of the thread matching structure is avoided. In addition, since the valve core assembly does not need to realize the switch valve through axial up and down movement, the overall height of the stop valve with a motor is reduced, saving space. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 An exploded view of one embodiment of a stop valve with a motor provided by the utility model;

[0020] Figure 2 A three-dimensional diagram of one embodiment of a stop valve with a motor provided by the utility model;

[0021] Figure 3 A cross-sectional view of one embodiment of a stop valve with a motor provided by the utility model;

[0022] Figure 4 This is a structural schematic diagram of a valve core assembly of one embodiment of a stop valve with a motor provided by the utility model;

[0023] Figure 5 A schematic structural diagram of a valve core rod of one embodiment of a stop valve with a motor provided by the utility model;

[0024] Figure 6 A schematic structural diagram of a valve core rod of one embodiment of a stop valve with a motor provided by the utility model at another angle;

[0025] Figure 7 A schematic structural diagram of a valve core housing of one embodiment of a stop valve with a motor provided by the utility model;

[0026] Figure 8 A schematic diagram of the structure of a moving valve core and a stationary valve core of one embodiment of a stop valve with a motor provided by the utility model;

[0027] Fig. 9 A cross-sectional view of one embodiment of the stop valve with a motor provided by the utility model without the first sealing ring;

[0028] Fig.10 This is a schematic structural diagram of a static valve core of one embodiment of a stop valve with a motor provided by the utility model.

[0029] The symbols in the figure mean the following:

[0030] 100. Stop valve with motor; 10. Valve body; 11. First opening; 12. Second opening; 13. Valve seat; 20. Valve core shell; 21. Hollow cavity; 22. First through hole; 23. Second through hole; 24. Positioning block; 25. Second sealing ring; 26. Limiting groove; 30. Valve core rod; 31. Sealing groove; 311. First sealing ring; 32. Step; 33. Matching protrusion; 40. Moving valve core; 41. Connecting section; 42. Blocking section; 43. Matching groove; 50. Static valve core; 51. Limiting protrusion; 60. First sealing gasket; 70. Second sealing gasket; 80. Motor. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0032] It should be noted that when a mechanism is referred to as being "fixed to" or "set on" another mechanism, it may be directly on the other mechanism or there may be a central mechanism. When a mechanism is considered to be "connected to" another mechanism, it may be directly connected to the other mechanism or there may be a central mechanism at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0036] The utility model provides a stop valve 100 with a motor, which can drive the valve core rod 30 to rotate through the motor 80, and drive the movable valve core 40 to rotate by means of the connection between the valve core rod 30 and the movable valve core 40, so that the movable valve core 40 blocks the first through hole 22 to achieve the isolation between the first through hole 22 and the second through hole 23, thereby realizing the on-off control of the pipeline more efficiently and quickly.

[0037] See also Figure 1-Figure 3 The stop valve 100 with a motor includes a valve body 10, a valve core assembly and a motor 80. The valve body 10 is provided with a first opening 11 and a second opening 12. The valve core assembly includes a moving valve core 40 and a static valve core 50. The static valve core 50 is arranged in the valve body 10 and is located between the first opening 11 and the second opening 12. The static valve core 50 is provided with a first through hole 22. One end of the moving valve core 40 close to the static valve core 50 abuts against the static valve core 50 and can rotate relative to the static valve core 50. When the moving valve core 40 rotates to the projection area of ​​the first through hole 22 in the axial direction of the static valve core 50, the moving valve core 40 covers the first through hole 22. The motor 80 is connected to the moving valve core 40 and drives the moving valve core 40 to rotate to achieve cooperation with the first through hole 22.

[0038] In this way, the first opening 11 and the second opening 12 on the valve body 10 are used for the inflow and outflow of the medium. When the moving valve core 40 blocks the first through hole 22, the first through hole 22 and the second through hole 23 are separated, and the stop valve 100 with the motor is in a closed state. When the moving valve core 40 releases the blockage of the first through hole 22 as the valve core rod 30 rotates, the stop valve 100 with the motor is in an open state. Therefore, the opening and closing of the stop valve 100 with the motor depends on whether the moving valve core 40 blocks, that is, covers the first through hole 22. The moving valve core 40 achieves the blockage of the first through hole 22 by rotating. This operation mode is different from the mode in which the valve core realizes axial movement by threaded engagement with the valve body 10. It is faster and more efficient. The stop valve 100 with the motor has high opening and closing efficiency, low torque requirement for the motor 80, small load on the motor 80, and avoids the problem of thread slippage of the threaded engagement structure. In addition, since the valve core assembly does not need to move up and down axially to realize the opening and closing of the valve, the overall height of the stop valve 100 with a motor is reduced, saving space.

[0039] The valve core assembly also includes a valve core shell 20 and a valve core rod 30. The valve core shell 20 is connected to the valve body 10, and a hollow cavity 21 is constructed in the valve core shell 20. A second through hole 23 is opened on the cavity wall of the valve core shell 20 to form the hollow cavity 21. The hollow cavity 21 is connected to the first opening 11 through the first through hole 22, and the hollow cavity 21 is connected to the second opening 12 through the second through hole 23. The valve core rod 30 is located in the hollow cavity 21. One end of the valve core rod 30 is connected to the motor 80, and the other end is connected to the moving valve core 40. The valve core shell 20 and the valve core rod 30 are coaxially arranged. The valve core rod 30 can rotate around its own axis to drive the moving valve core 40 to rotate. As the valve core rod 30 rotates, the moving valve core 40 can block or open the first through hole 22.

[0040] In this way, the first opening 11 and the second opening 12 on the valve body 10 are used for the inflow and outflow of the medium, and because the first through hole 22 is connected to the first opening 11, and the second through hole 23 is connected to the second opening 12, when the stop valve 100 with a motor is in an open state, the medium flows in from the first opening 11 and then flows out of the valve body 10 from the second opening 12 through the first through hole 22 and the second through hole 23. Since the valve core housing 20 and the valve core rod 30 are coaxially arranged, the valve core rod 30 can freely rotate in the valve core housing 20 along the axis of the valve core housing 20, thereby driving the movable valve core 40 to rotate, and causing the movable valve core 40 to block or open the first through hole 22.

[0041] See also Figure 4-Figure 6 as well as Figure 8The movable valve core 40 is provided with a matching groove 43, and the end of the valve core rod 30 close to the movable valve core 40 is provided with a matching protrusion 33, and the matching protrusion 33 is correspondingly inserted into the matching groove 43. The matching protrusion 33 and the matching groove 43 are mutually engaged and limited, so that the valve core rod 30 can drive the movable valve core 40 to rotate.

[0042] Specifically, in this embodiment, the movable valve core 40 is provided with two matching grooves 43 at intervals along the circumferential direction, and the valve core rod 30 is provided with two matching protrusions 33 at one end close to the movable valve core 40, so as to achieve a more stable clamping rotation between the two.

[0043] Please continue to see Figure 8 Further, the valve core assembly further includes a static valve core 50, which is fixedly connected to the valve core housing 20, and a first through hole 22 is provided on the static valve core 50. In this way, the static valve core 50 and the valve core housing 20 can be processed and assembled separately, and the process difficulty is lower.

[0044] Preferably, both the static valve core 50 and the dynamic valve core 40 are made of ceramic material. The ceramic material has high hardness and is not easy to deform. It has a smooth surface and low friction. The dynamic valve core 40 can be rotated relative to the static valve core 50 with an extremely small torque, thereby closing the first through hole 22. The closing torque requirement is low, which reduces the load on the motor 80.

[0045] Of course, in other embodiments, the static valve core 50 and the dynamic valve core 40 may also be made of other materials, such as brass, to facilitate processing and reduce costs. Since brass has a lower hardness, the static valve core 50 and the dynamic valve core 40 have a better sealing effect after hard sealing.

[0046] It can be understood that the valve core shell 20 and the static valve core 50 can also be integrally formed, that is, a structure that abuts the movable valve core 40 is directly integrally formed on the side of the valve core shell 20 close to the first opening 11. In this way, the first through hole 22 can be directly opened on the valve core shell 20 without the need to additionally set up a static valve core 50, which is more cost-effective.

[0047] In this embodiment, at least part of the outer circumference of the static valve core 50 is circular, and the outer circumference of the static valve core 50 is circumferentially abutted against the inner wall of the valve core housing 20, and at least part of the outer circumference of the movable valve core 40 is circular, and the static valve core 50 and the movable valve core 40 are coaxially arranged. Since the outer circumference of the static valve core 50 is circumferentially abutted against the inner wall of the valve core housing 20, the connection between the static valve core 50 and the valve core housing 20 is tighter, ensuring that the medium can only pass through the first through hole 22. And since the movable valve core 40 and the static valve core 50 are coaxially arranged, the adaptability of the movable valve core 40 and the static valve core 50 is better. Since at least part of the outer circumference of the movable valve core 40 is circular, it can rotate freely within the projection area defined by the outer circumference of the static valve core 50, and the projections of the two in the axial direction are more adapted to reduce interference.

[0048] See also Figure 7-Figure 8 At least one limiting protrusion 51 is provided on the outer peripheral side of the static valve core 50, and at least one limiting groove 26 is opened on the inner wall of the valve core shell 20. The limiting protrusion 51 is embedded in the limiting groove 26, so the limiting protrusion 51 and the limiting groove 26 abut against each other to limit, thereby ensuring that the static valve core 50 will not rotate circumferentially when opening and closing with the moving valve core 40 by friction.

[0049] Preferably, in this embodiment, two limiting grooves 26 are provided on the inner wall of the valve core housing 20, and two limiting protrusions 51 are symmetrically provided on the outer peripheral side of the static valve core 50, so as to improve the limiting strength between the two.

[0050] Furthermore, there are at least two first through holes 22, and at least two first through holes 22 are rotationally symmetrical about the center of the static valve core 50. More than two first through holes 22 increase the flow area, so that more media can flow into the valve body 10 through the first through holes 22, thereby increasing the flow efficiency of the device. And because the moving valve core 40 blocks the first through hole 22 by rotating the valve core rod 30, the first through hole 22 is set to be rotationally symmetrical about the center of the static valve core 50, so that the moving valve core 40 can easily block the first through hole 22 by rotating.

[0051] For further information, see Fig.10 The first through hole 22 is fan-shaped, and the moving valve core 40 includes a connecting section 41 and a plurality of blocking sections 42. The plurality of blocking sections 42 are connected to the connecting section 41, and the blocking sections 42 are also configured to be fan-shaped in order to fit the fan-shaped first through hole 22. With the rotation of the moving valve core 40, each blocking section 42 can be correspondingly covered on a first through hole 22, thereby achieving complete isolation of the first through hole 22. The fan-shaped first through hole 22 is more suitable for the circular static valve core 50, and can maximize the flow area of ​​the first through hole 22 under the same size limit. The shape of the blocking section 42 is mutually adapted to the shape of the first through hole 22, which can ensure its tightness in isolating the first through hole 22 and avoid medium leakage.

[0052] In other embodiments, the first through hole 22 may also be formed in a circular, triangular or rectangular shape, etc., as long as it can be covered and blocked by the blocking section 42 , and is not limited to the above-mentioned fan-shaped embodiment.

[0053] In this embodiment, there are two first through holes 22, and they are symmetrically arranged relative to the center of the static valve core 50, that is, the two first through holes 22 are arranged 180° apart along the circumferential direction of the static valve core 50, and the inner wall of the hollow cavity 21 formed by the valve core shell 20 is protruding with at least one positioning block 24, and the line connecting the positioning block 24 and the center of the static valve core 50 forms an angle of 90° with the line connecting the two first through holes 22. Since the positioning block 24 can hinder the further rotation of the valve core rod 30 by abutting against the valve core rod 30, when the valve core rod 30 is limited, the moving valve core 40 will also stop rotating synchronously, and since the line connecting the positioning block 24 and the static valve core 50 is set at a 90° angle with the line connecting the two first through holes 22, when the valve core rod 30 abuts against the positioning block 24, the center line of the moving valve core 40 is also set at a 90° angle with the line connecting the two first through holes 22, so in this state, the moving valve core 40 is in a state of opening the first through hole 22 (that is, not blocking the first through hole 22). On the contrary, when the center line of the moving valve core 40 coincides with the line connecting the two first through holes 22, the moving valve core 40 is in a state of blocking the first through hole 22. It can be seen from this that the valve core rod 30 and the moving valve core 40 only need to rotate 90° to realize the switching between the open and closed states of the stop valve 100 with a motor, which is highly efficient and quick to switch.

[0054] The valve core assembly further includes a first sealing gasket 60 and a second sealing gasket 70. The first sealing gasket 60 is located at one end of the valve core rod 30 away from the first opening 11, and is pressed by the valve core rod 30 against the inner wall of the hollow cavity 21. The second sealing gasket 70 is located at one end of the valve core housing 20 close to the first opening 11, and is located between the valve core housing 20 and the valve body 10, and is pressed against the valve body 10 by the valve core housing 20. The first sealing gasket 60 improves the sealing performance between the valve core rod 30 and the valve core housing 20, and the second sealing gasket 70 improves the sealing performance between the valve core housing 20 and the valve body 10, thereby enhancing the sealing performance of the stop valve 100 with a motor as a whole.

[0055] In this embodiment, the inner wall of the valve body 10 with the first opening 11 is inwardly contracted to form a valve seat 13, and the second sealing gasket 70 is pressed against the valve seat 13 by the valve core housing 20, which facilitates the installation of the second sealing gasket 70. The outer peripheral side of the valve core rod 30 protrudes outward and forms a step 32, and the first sealing gasket 60 is arranged on the step 32 and is pressed against each other by the valve core rod 30 and the valve core seat.

[0056] At least one sealing groove 31 is formed on the outer circumference of the valve core rod 30, and a first sealing ring 311 is embedded in the sealing groove 31. The outer circumference of the first sealing ring 311 abuts against the inner wall of the hollow cavity 21 formed by the valve core housing 20. The first sealing ring 311 further improves the airtightness between the valve core rod 30 and the valve core seat.

[0057] Preferably, in this embodiment, two sealing grooves 31 are provided along the axial direction on the outer peripheral side of the valve core rod 30, and first sealing rings 311 are respectively embedded in the two sealing grooves 31. In other embodiments, in order to further improve the airtightness between the valve core rod 30 and the valve core, more sealing grooves 31 and first sealing rings 311 can be added, and are not limited to two.

[0058] The valve core shell 20 is connected to the valve body 10 by threads. Due to the insufficient air tightness of the threaded connection, the valve core assembly also includes a second sealing ring 25. The second sealing ring 25 is located at the end of the valve core shell 20 away from the first opening 11 and is pressed against the valve body 10 by the valve core shell 20, thereby ensuring the tightness of the connection between the valve core assembly and the valve body 10.

[0059] Alternatively, see Fig. 9 The valve core housing 20 is connected to the valve body 10 by welding. Since the welding connection is tighter, the first sealing ring 311 is not provided in this embodiment to save costs. The threaded connection is more convenient for later disassembly and maintenance. The entire valve core assembly can be removed from the valve body 10 by rotating. Welding can improve the connection strength between the valve core housing 20 and the valve body 10. In this embodiment, laser welding is used.

[0060] Compared with the prior art, the utility model sets a valve core shell 20, a valve core rod 30 and a moving valve core 40, and limits the valve core rod 30 through the valve core shell 20, so that the valve core rod 30 can rotate in the valve body 10, and drive the moving valve core 40 to block or open the first through hole 22, so as to realize the opening or disconnection of the stop valve 100 with a motor. This operation method is different from the method in which the valve core realizes axial movement by threaded cooperation with the valve body 10, which is faster and more efficient, and the opening and closing efficiency of the stop valve is high, and the torque requirement for the motor 80 is low, the load of the motor 80 is small, and the problem of thread slippage of the threaded cooperation structure is avoided. In addition, since the valve core assembly does not need to realize the switch valve through axial up and down movement, the overall height of the stop valve 100 with a motor is reduced, saving space.

[0061] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A stop valve with a motor, characterized in that: The stop valve with motor comprises: A valve body (10), wherein the valve body (10) is provided with a first opening (11) and a second opening (12); A valve core assembly, the valve core assembly comprising a movable valve core (40) and a static valve core (50), the static valve core (50) being arranged in the valve body (10) and being located between the first opening (11) and the second opening (12), the static valve core (50) being provided with a first through hole (22), the first through hole (22) being able to connect the first opening (11) and the second opening (12); the movable valve core (40) being close to one end of the static valve core (50) being in contact with the static valve core (50) and being able to rotate relative to the static valve core (50), when the movable valve core (40) rotates to the projection area of ​​the first through hole (22) in the axial direction of the static valve core (50), the movable valve core (40) covers the first through hole (22), and the first opening (11) and the second opening (12) are in a disconnected state; A motor (80) is connected to the movable valve core (40).

2. The stop valve with a motor according to claim 1, characterized in that: The valve core assembly further comprises a valve core housing (20) and a valve core rod (30); the valve core housing (20) is connected to the valve body (10), and a hollow cavity (21) is constructed in the valve core housing (20); a second through hole (23) is provided on a cavity wall of the valve core housing (20) forming the hollow cavity (21); the hollow cavity (21) can be communicated with the first opening (11) through the first through hole (22); and the hollow cavity (21) is communicated with the second opening (12) through the second through hole (23); The valve core rod (30) is located in the hollow cavity (21), one end of the valve core rod (30) is connected to the motor (80), and the other end is connected to the movable valve core (40), the valve core housing (20) and the valve core rod (30) are coaxially arranged, and the valve core rod (30) can rotate around its own axis to drive the movable valve core (40) to rotate.

3. The stop valve with a motor according to claim 2, characterized in that: At least a portion of the outer peripheral side of the static valve core (50) is circular, and the outer peripheral side of the static valve core (50) is circumferentially abutted against the inner wall of the valve core housing (20); at least a portion of the outer peripheral side of the movable valve core (40) is circular, and the static valve core (50) and the movable valve core (40) are coaxially arranged.

4. The stop valve with a motor according to claim 3, characterized in that: There are at least two first through holes (22), and at least two of the first through holes (22) are rotationally symmetrical about the center of the static valve core (50).

5. The stop valve with a motor according to claim 4, characterized in that: The first through hole (22) is fan-shaped, and the movable valve core (40) comprises a connecting section (41) and a plurality of blocking sections (42). The plurality of blocking sections (42) are located on the periphery of the connecting section (41) and are all connected to the connecting section (41). The blocking sections (42) are also arranged in a fan shape. As the movable valve core (40) rotates, each of the blocking sections (42) is correspondingly covered on one of the first through holes (22).

6. The stop valve with a motor according to claim 4, characterized in that: There are two first through holes (22), which are symmetrically arranged relative to the center of the static valve core (50). At least one positioning block (24) is protruding from the inner wall of the valve core shell (20) forming the hollow cavity (21). As the valve core rod (30) rotates, the valve core rod (30) abuts against the positioning block (24), and a line connecting the midpoint of the positioning block (24) and the center of the static valve core (50) forms an angle of 90° with a line connecting the midpoints of the two first through holes (22).

7. The stop valve with a motor according to claim 2, characterized in that: At least one limiting protrusion (51) is provided on the outer peripheral side of the static valve core (50), and at least one limiting groove (26) is opened on the inner wall of the valve core housing (20), and the limiting protrusion (51) is embedded in the limiting groove (26).

8. The stop valve with a motor according to claim 2, characterized in that: The movable valve core (40) is provided with a matching groove (43), and one end of the valve core rod (30) close to the movable valve core (40) is provided with a matching protrusion (33), and the matching protrusion (33) is correspondingly inserted into the matching groove (43).

9. The stop valve with a motor according to claim 2, characterized in that: The valve core shell (20) is arranged in the valve body (10), the valve core rod (30) is arranged in the valve core shell (20) and cooperates with the valve core shell (20) to form the valve core assembly, and the valve core assembly also includes a first sealing gasket (60) and a second sealing gasket (70), the first sealing gasket (60) is located at the end of the valve core rod (30) away from the first opening (11), and is pressed by the valve core rod (30) on the inner wall of the hollow cavity (21), the second sealing gasket (70) is located at the end of the valve core shell (20) close to the first opening (11), and is located between the valve core shell (20) and the valve body (10), and is pressed by the valve core shell (20) on the valve body (10); At least one sealing groove (31) is formed on the outer peripheral side of the valve core rod (30), a first sealing ring (311) is embedded in the sealing groove (31), and the outer peripheral side of the first sealing ring (311) abuts against the inner wall of the hollow cavity (21) formed by the valve core housing (20).

10. The stop valve with a motor according to claim 2, characterized in that: The valve core housing (20) is threadedly connected to the valve body (10), and the valve core assembly further comprises a second sealing ring (25), wherein the second sealing ring (25) is located at an end of the valve core housing (20) away from the first opening (11) and is pressed against the valve body (10) by the valve core housing (20); or, The valve core housing (20) and the valve body (10) are connected by welding.

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