A connection structure of an actuator and a valve

Abstract

The application provides a connecting structure of an actuator and a valve, and belongs to the technical field of valves. The connecting structure of the actuator and the valve solves the problem of insufficient reliability of the connection between the actuator and the valve. The connecting structure of the actuator and the valve, the actuator comprising a shell, the valve comprising a valve body, the connecting structure comprising a connecting cylinder arranged on the shell and a connecting neck arranged on the valve body, the connecting cylinder being connected with the connecting neck in a sleeving manner, the outer side of the connecting cylinder being sleeved with a sliding sleeve which can slide in the axial direction, an elastic member being arranged between the sliding sleeve and the shell and capable of driving the sliding sleeve to slide towards the valve body, the sliding sleeve being capable of clamping the connecting cylinder on the connecting neck and forming an axial gap between the sliding sleeve and the shell after the sliding sleeve slides towards the valve body, and the shell being clamped with a locking member which can slide in the radial direction of the connecting cylinder, the locking member being capable of being inserted into the axial gap and locked on the shell after the locking member slides towards the connecting cylinder. The connecting structure improves the reliability of the connection between the actuator and the valve.

Description

Technical Field

[0001] The invention belongs to the technical field of valves and relates to a connection structure between an actuator and a valve. Background Art

[0002] A valve is a mechanical device with a movable mechanism used to control the flow of media within a pipeline. Valves are categorized by their actuation method, including manual valves, electric valves, and hydraulic or pneumatic valves. Electric valves are operated by an electric, solenoid, or other electrical device. The device that operates the valve is also called an actuator.

[0003] Chinese patent literature publicly proposes a remote intelligent regulating valve [application number: CN201922069702.6; announcement number: CN210889643U], which includes a valve and an actuator. An extension boss and a positioning boss are sequentially protruded outward from the middle of the valve. The actuator is provided with a positioning boss sleeve for the positioning boss and the extension boss to extend into. The positioning boss sleeve on the actuator and the positioning boss on the valve are fixedly connected by a pin. An annular groove is radially inwardly provided on the outer peripheral wall of the positioning boss. The pin penetrates the positioning boss sleeve and passes through the annular groove and fits against the groove wall of the annular groove. The extension boss and the positioning boss sleeve are fixedly connected by a clamping assembly.

[0004] The actuator and valve are fixed by a latch, which can be directly inserted during installation. However, the latch has no positioning structure and can be easily pulled out, making the connection between the actuator and the valve less reliable. Summary of the Invention

[0005] The purpose of the present invention is to address the above-mentioned problems existing in the prior art and to propose a connection structure between an actuator and a valve, thereby solving the technical problem of insufficient reliability of the existing connection between the actuator and the valve.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] The cam is secured to the outer wall of the valve body with a lock member which is secured to the cam face and is designed to lock the valve body when the cam is engaged. The cam is secured to the outer wall of the valve body with a lock member which is designed to lock the valve body when the cam is engaged.

[0008] When the actuator is connected to the valve, the sleeve is first made to slide toward the housing to overcome the elastic force of the elastic member, and then the connecting sleeve is put on the outside of the connecting neck. Then the sleeve is loosened, and the sleeve slides toward the valve body under the action of the elastic member. After the sleeve slides toward the valve body, the connecting sleeve is clamped on the connecting neck to fix the actuator on the valve, and an axial gap is formed between the sleeve and the housing; then the locking member is slid toward the connecting sleeve, so that the locking member is inserted into the axial gap, and the locking member is locked on the housing at the same time.

[0009] The locking member, inserted into the axial gap, forms an axial limit on the sleeve, preventing the sleeve from sliding toward the housing and releasing the locking state between the connecting tube and the connecting neck. Furthermore, once inserted into the axial gap, the locking member is locked to the housing, preventing it from sliding out of the axial gap at will. Therefore, the provision of the locking member ensures that the connecting tube and the connecting neck remain stably fixed. The elastic force generated by the elastic member maintains the connection tube in the state it has slid toward the valve body. Even if the locking member is removed from the axial gap, the sleeve can only be slid toward the housing to release the locking state between the connecting tube and the connecting neck after a pushing or pulling force that overcomes the elastic force of the elastic member is applied. Therefore, the provision of the elastic member also helps to ensure a stable fixing state between the connecting tube and the connecting neck.

[0010] To disassemble the actuator from the valve, first release the locking member and slide it out of the axial clearance. Then, apply a certain amount of force to force the sleeve toward the housing, overcoming the elastic force of the elastic member. If this sequence is incorrect, such as pushing or pulling the sleeve before the locking member is removed from the axial clearance, the sleeve will not slide toward the housing, and the connection between the connecting tube and the connecting neck will not be released. Only by following the correct disassembly sequence can the actuator and valve be disassembled, effectively preventing the actuator and valve from being separated due to improper operation.

[0011] Therefore, in the connection structure between the actuator and the valve, two anti-dismantling structures are formed by arranging elastic parts and locking parts, and the disassembly operation needs to be completed in the correct disassembly sequence. At the same time, a certain amount of force is also required, which increases the difficulty of disassembly and reduces the possibility of accidental disassembly, thereby improving the reliability of the connection between the actuator and the valve.

[0012] In the above-mentioned connecting structure between the actuator and the valve, the housing is provided with a protruding clamping block, the clamping block is provided with a clamping groove, and the locking member is embedded in the clamping groove and can slide along the clamping groove.

[0013] After the snap-fit ​​groove is set, the locking piece can not only slide along the snap-fit ​​groove, thereby sliding into the axial gap to realize axial limitation of the sleeve, but also the locking piece is clamped on the snap-fit ​​block through the snap-fit ​​groove and will not fall out, thereby ensuring the axial limitation effect of the locking piece on the sleeve, which is beneficial to improving the reliability of the connection between the actuator and the valve.

[0014] In the above-mentioned connection structure between the actuator and the valve, a concave locking recess is further provided on the clamping block, and the locking piece has a protruding locking protrusion that can be embedded in the locking recess. When the locking protrusion is embedded in the locking recess, the locking piece is inserted into the axial gap.

[0015] The locking member is locked on the housing through the locking recess and the locking protrusion, preventing the locking member from sliding freely from the axial gap, ensuring the axial limiting effect of the locking member on the sleeve, and helping to improve the reliability of the connection between the actuator and the valve.

[0016] In the above-mentioned connection structure between the actuator and the valve, the locking member has a strip-shaped sliding groove, the clamping block is embedded in the sliding groove, there are two clamping grooves and they are respectively located on both sides of the clamping block, and the two side walls of the sliding groove are embedded in the corresponding clamping grooves.

[0017] The locking piece is limited on both sides by the clamping grooves on both sides of the clamping block, so that the locking piece is more stably clamped on the clamping block and is not easily separated from the clamping block during sliding, thereby ensuring the axial limiting effect of the locking piece on the sliding sleeve, which is beneficial to improving the reliability of the connection between the actuator and the valve.

[0018] In the above-mentioned connecting structure between the actuator and the valve, there are two locking recesses, which are respectively located on both sides of the clamping block, and there are two locking protrusions, which are arranged in a one-to-one correspondence with the locking recesses.

[0019] In this way, the locking piece is more stably locked on the clamping block through two pairs of locking protrusions and locking recesses, better ensuring that the locking piece will not slide at will, thereby better ensuring the axial limiting effect of the locking piece on the sliding sleeve, which is beneficial to improving the reliability of the connection between the actuator and the valve.

[0020] In the above-mentioned connecting structure between the actuator and the valve, a guide groove is provided on the clamping block along the radial direction of the connecting cylinder, and the locking member has a guide strip inserted into the guide groove.

[0021] The guide groove and the guide strip have a guiding function, which enables the locking piece to slide radially along the connecting tube, so that the locking piece can be accurately inserted into the axial gap to axially limit the sliding sleeve, which is beneficial to improving the reliability of the connection between the actuator and the valve.

[0022] In the above-mentioned connection structure between the actuator and the valve, a concave sliding recess and a positioning recess are further provided on the clamping block, and the locking protrusion can be embedded in the sliding recess and the positioning recess. When the locking protrusion is embedded in the positioning recess, the locking piece disengages from the axial gap, and the sliding recess is located between the locking recess and the positioning recess.

[0023] The sliding notch has an avoidance function, preventing the locking piece from being stuck on the clamping block, so that the locking piece slides smoothly on the clamping block. The positioning notch has a positioning function, preventing the locking piece from sliding out of the housing too much, thereby facilitating the sliding operation of the locking piece.

[0024] In the above-mentioned connection structure between the actuator and the valve, the locking member is Y-shaped, and the locking member includes a straight driving handle and an arc-shaped or V-shaped limiting portion. The driving handle is embedded in the clamping groove, and the limiting portion is located on one end of the driving handle close to the connecting cylinder, and the limiting portion can be inserted into the axial gap.

[0025] Such arrangement of the locking member allows more of the locking member to enter the axial gap, thereby stabilizing the axial limiting effect of the locking member on the sliding sleeve, and is beneficial to improving the reliability of the connection between the actuator and the valve.

[0026] In the above-mentioned connecting structure between the actuator and the valve, the end of the driving handle away from the connecting cylinder has a protruding traction protrusion.

[0027] The locking piece is easily pushed into the axial gap by the traction projection. When the actuator needs to be removed from the valve, the traction projection provides a traction point when pulling the locking piece out of the axial gap, making it easier to pull out the locking piece.

[0028] In the above-mentioned connection structure of the actuator and the valve, an annular groove is provided on the outer side surface of the connecting neck, a protruding retaining ring is provided on the inner side surface of the sliding sleeve, a retaining shoulder and a fixing groove are provided on the outer side surface of the connecting tube, the fixing groove is close to the valve body, the retaining ring is located between the retaining shoulder and the fixing groove, a retaining ring is fixed in the fixing groove, and a plurality of through holes are provided on the side wall of the connecting tube along the circumference, the through holes are located between the fixing groove and the retaining shoulder, a ball is installed in each through hole, and the elastic part is a compression spring, the elastic part is sleeved on the outer side of the connecting tube and the two ends of the elastic part respectively abut against the retaining ring and the retaining shoulder, under the action of the elastic force of the elastic part, the retaining ring abuts against the retaining ring, and the retaining ring blocks the outer end of the through hole so that the inner side of the ball is embedded in the annular groove.

[0029] Driven by the elastic member, the lower sleeve slides downward, securing the connecting tube in the connecting neck via the ball and annular groove. To disassemble the actuator and valve, the sleeve overcomes the elastic force of the elastic member and slides toward the housing, freeing the retaining ring from the outer end of the through-hole. This allows the ball to escape from the annular groove, enabling disassembly. When the sleeve is released, the retaining ring returns to block the outer end of the through-hole, pushing the ball back into the annular groove and reconnecting the actuator.

[0030] Compared with the prior art, the present invention has the following advantages:

[0031] A locking member is provided on the actuator housing to limit the axial position of the sleeve, maintaining a stable fixed state between the connecting tube and the connecting neck, reducing the possibility of separation between the actuator and the valve due to misoperation and improving the reliability of the connection between the actuator and the valve. A snap-fitting groove is provided on the snap-fitting block, into which the locking member is embedded, achieving a slidable snap-fit ​​connection and ensuring that the locking member does not separate from the housing. A locking recess and a locking protrusion are provided to lock the locking member in position after insertion into the axial gap, preventing it from sliding freely and ensuring that the locking member axially positions the sleeve. The provision of a guide groove and a guide strip ensures that the locking member slides accurately on the housing and is accurately inserted into the axial gap, all of which contribute to improving the reliability of the connection between the actuator and the valve. A force projection is provided on the locking member, and the snap-fitting block has a sliding recess and a positioning recess to facilitate the sliding operation of the locking member. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a three-dimensional diagram of the first embodiment of the connection structure;

[0033] Figure 2 This is an exploded perspective view of the first embodiment of the connection structure;

[0034] Figure 3 This is a longitudinal cross-sectional view of the first embodiment of the connection structure. Figure 1 ;

[0035] Figure 4 This is a longitudinal cross-sectional view of the first embodiment of the connection structure. Figure 2 ;

[0036] Figure 5 yes Figure 3 Cross-section view in the AA direction;

[0037] Figure 6 It is a partial three-dimensional diagram of the shell in the first embodiment of the connection structure.

[0038] In the figure, 1. shell; 1a. accommodating groove; 2. connecting cylinder; 2a. positioning groove; 2b. shoulder; 2c. fixing groove; 2d. through hole; 3. snap-in block; 3a. snap-in groove; 3b. guide groove; 3c. locking recess; 3d. sliding recess; 3e. positioning recess; 4. sliding sleeve; 4a. retaining ring; 4b. limiting ring; 4c. force ring; 5. elastic member; 6. axial clearance; 7. retaining ring; 8. ball; 9. locking member; 9a. driving handle; 9a1. sliding groove; 9a2. guide strip; 9a3. locking protrusion; 9b. limiting part; 9c. force protrusion; 10. valve body; 10a. connecting neck; 10b. annular groove; 10c. positioning protrusion. DETAILED DESCRIPTION

[0039] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0040] Example 1

[0041] like Figures 1-6 As shown, a connection structure between an actuator and a valve is shown. The actuator includes a housing 1, and the valve includes a valve body 10. The connection structure includes a connecting tube 2 disposed on the housing 1 and a connecting neck 10a disposed on the valve body 10. The housing 1 has an upwardly concave receiving groove 1a on its lower end surface. The connecting tube 2 is disposed on the bottom surface of the receiving groove 1a and protrudes downward from the lower end surface of the housing 1. The connecting neck 10a is disposed on the upper end surface of the valve body 10 and protrudes upward. The connecting tube 2 is sleeved onto the outer side of the connecting neck 10a. A positioning groove 2a is formed on the lower end surface of the connecting tube 2, located on the outer circumference of the inner hole of the connecting tube 2. The connecting neck 10a has a positioning protrusion 10c corresponding to the positioning groove 2a. The positioning protrusion 10c engages with the positioning groove 2a to circumferentially secure the connecting tube 2 to the connecting neck 10a. Two positioning protrusions 10c are provided, symmetrically arranged, and there are four positioning grooves 2a, evenly distributed along the circumference. A circumferential positioning recess 3e is provided on the outer surface of the upper end of the connecting neck 10a, and the circumferential positioning recess 3e passes through the upper end surface of the connecting neck 10a upward. The bottom surface of the circumferential positioning recess 3e is a plane, and the inner surface of the inner hole of the connecting tube 2 is provided with a circumferential positioning protrusion corresponding to the circumferential positioning recess 3e. The inner surface of the circumferential positioning protrusion is a plane, and the circumferential positioning protrusion is embedded in the circumferential positioning recess 3e. The bottom surface of the circumferential positioning recess 3e is in contact with the inner surface of the circumferential positioning protrusion, so that the circumferential positioning of the connecting tube 2 and the connecting neck 10a is accurate.

[0042] An axially slidable sleeve 4 is mounted on the outer side of the connecting tube 2. An elastic member 5 is provided between the sleeve 4 and the housing 1, driving the sleeve 4 toward the valve body 10. Sliding the sleeve 4 toward the valve body 10 secures the connecting tube 2 to the connecting neck 10a, creating an axial gap 6 between the sleeve 4 and the housing 1. An annular groove 10b is provided on the outer side of the connecting neck 10a. A protruding retaining ring 4a is provided on the inner side of the sleeve 4. The outer side of the connecting tube 2 includes a retaining shoulder 2b and a fixing groove 2c. The fixing groove 2c is adjacent to the valve body 10, with the retaining ring 4a located between the retaining shoulder 2b and the fixing groove 2c. A retaining ring 7 is secured within the fixing groove 2c. The retaining ring 7 is an open, annular shape with elastic properties, facilitating assembly of the sleeve 4. Several through-holes 2d are evenly distributed along the circumference of the sidewall of the connecting tube 2, located between the fixing groove 2c and the retaining shoulder 2b. A ball 8 is mounted in each through-hole 2d. The elastic member 5 is a compression spring. It fits over the outer side of the connecting tube 2, with its ends resting against the retaining ring 4a and the retaining shoulder 2b, respectively. Under the elastic force of the elastic member 5, the retaining ring 4a presses against the retaining ring 7, blocking the outer end of the through hole 2d and allowing the ball 8 to fit into the annular groove 10b. The lower end of the retaining ring 4a features an inclined guide surface that pushes the ball 8, preventing it from getting stuck. The upper end of the sliding sleeve 4 is inserted into the receiving groove 1a. As the sliding sleeve 4 slides on the connecting tube 2, the upper end of the sliding sleeve 4 remains within the receiving groove 1a. A protruding retaining ring 4b is provided on the outer side of the sliding sleeve 4, located below the housing 1. When the retaining ring 4a of the sliding sleeve 4 rests against the retaining ring 7, an axial gap 6 is formed between the upper end of the retaining ring 4b and the lower end of the housing 1. The outer surface of the stop ring 4b has a protruding support ring 4c, which facilitates the user's grip on the sliding sleeve 4 for sliding operation. The inner hole of the retaining ring 4a of the sliding sleeve 4 is a spline hole, and the outer surface of the connecting tube 2 has a spline that matches the spline hole. The spline hole and the spline cooperate to fix the sliding sleeve 4 circumferentially, and the axial sliding of the sliding sleeve 4 is stable and accurate.

[0043] A locking member 9 is secured to the lower end surface of the housing 1 and is capable of sliding radially along the connecting tube 2. When the locking member 9 slides toward the connecting tube 2, it is inserted into the axial gap 6 and locked to the housing 1. The locking member 9 is Y-shaped and includes a straight drive handle 9a and an arc-shaped or V-shaped stopper 9b. The stopper 9b is located on the end of the drive handle 9a closest to the connecting tube 2 and is capable of inserting into the axial gap 6. The drive handle 9a has a protruding retaining protrusion 9c on the end away from the connecting tube 2. The lower end surface of the housing 1 includes a protruding engaging block 3, with an engaging groove 3a defined on its side. The drive handle 9a has a strip-shaped sliding groove 9a1 extending radially along the connecting tube 2. The engaging block 3 fits into the sliding groove 9a1, and the sidewalls of the sliding groove 9a1 fit into the engaging groove 3a, allowing the locking member 9 to slide along the engaging groove 3a. A guide groove 3b is defined radially along the connecting tube 2 on the end of the clamping block 3 facing away from the connecting tube 2. A guide bar 9a2 is inserted into the guide groove 3b on the side of the sliding groove 9a1 facing away from the connecting tube 2. The guide bar 9a2 is able to slide within the guide groove 3b. The side of the clamping block 3 is also provided with a recessed locking notch 3c, a sliding notch 3d, and a positioning notch 3e. The sliding notch 3d is located between the locking notch 3c and the positioning notch 3e, with the locking notch 3c being closer to the connecting tube 2. A protruding locking projection 9a3 is formed on the sidewall of the sliding groove 9a1. The locking projection 9a3 fits into the locking notch 3c, the sliding notch 3d, and the positioning notch 3e. When the locking projection 9a3 fits into the locking notch 3c, the retaining portion 9b of the locking member 9 is inserted into the axial gap 6. When the locking projection 9a3 fits into the positioning notch 3e, the retaining portion 9b of the locking member 9 is released from the axial gap 6. To facilitate the processing of the locking notch 3c, the sliding notch 3d, and the positioning notch 3e, the locking notch 3c, the sliding notch 3d, and the positioning notch 3e all extend downwardly through the lower end surface of the clamping block 3, dividing the clamping groove 3a into two sub-grooves, with the locking notch 3c, the sliding notch 3d, and the positioning notch 3e located between the two sub-grooves. To ensure that the locking protrusion 9a3 can be embedded in the locking notch 3c, the sliding notch 3d, and the positioning notch 3e, the locking member 9 can have a certain degree of elasticity. The locking member 9 can be made of a metal material, such as iron or aluminum, or a plastic material. This allows it to maintain its structure and produce a certain degree of elastic deformation to enable the locking protrusion 9a3 to be embedded in the locking notch 3c, the sliding notch 3d, and the positioning notch 3e. Alternatively, the locking protrusion 9a3 may be elastic, for example, the locking protrusion 9a3 may be formed by bending a spring sheet into a convex arch shape, so that the locking protrusion 9a3 can undergo a certain elastic deformation and smoothly fit into the locking recess 3c, the sliding recess 3d, and the positioning recess 3e. There are two engaging grooves 3a, one on each side of the engaging block 3, and the two side walls of the sliding groove 9a1 fit into the corresponding engaging grooves 3a.There are two locking recesses 3c, which are respectively located on both sides of the clamping block 3, and there are two locking protrusions 9a3, which are arranged one-to-one corresponding to the locking recesses 3c; and there are two sliding recesses 3d, which are respectively located on both sides of the clamping block 3, and there are two positioning recesses 3e, which are respectively located on both sides of the clamping block 3.

[0044] When the actuator is connected to the valve, the sleeve 4 is first made to slide upward to overcome the elastic force of the elastic member 5, and the upper end surface of the limiting ring 4b of the sleeve 4 is abutted against the lower end surface of the housing 1. Then the connecting tube 2 is mounted on the connecting neck 10a, so that the positioning protrusion 10c is embedded in the positioning groove 2a, and then the sleeve 4 is loosened. The sleeve 4 slides downward under the action of the elastic member 5 and the retaining ring 4a abuts against the retaining ring 7. The retaining ring 4a pushes the ball 8 so that the inner side of the ball 8 enters the annular groove 10b. In this way, the connecting tube 2 is clamped on the connecting neck 10a, thereby fixing the actuator on the valve, and an axial gap 6 is formed between the upper end surface of the limiting ring 4b of the sleeve 4 and the lower end surface of the housing 1; then the locking member 9 is slid toward the connecting tube 2, so that the limiting portion 9b of the locking member 9 is inserted into the axial gap 6, and at the same time, the locking protrusion 9a3 on the locking member 9 is embedded in the locking recess 3c of the clamping block 3, so that the locking member 9 is locked on the housing 1.

[0045] Because the locking member 9's limiting portion 9b is inserted into the axial gap 6, it axially limits the sliding sleeve 4, preventing the sliding sleeve 4 from sliding upward and releasing the engagement between the connecting tube 2 and the connecting neck 10a. Furthermore, once the locking member 9 is inserted into the axial gap 6, it is locked to the housing 1 by the locking protrusion 9a3 and the locking recess 3c, preventing the locking member 9 from sliding freely out of the axial gap 6. Therefore, the provision of the locking member 9 ensures a stable engagement between the connecting tube 2 and the connecting neck 10a. The elastic force generated by the elastic member 5 maintains the position of the retaining ring 4a of the connecting tube 2 against the retaining ring 7, keeping the retaining ring 4a blocking the outer end of the through hole 2d. Even if the locking member 9 is removed from the axial gap 6, the sliding sleeve 4 can only slide upward, releasing the engagement between the connecting tube 2 and the connecting neck 10a, after a pushing or pulling force that overcomes the elastic force of the elastic member 5 is applied. Therefore, the provision of the elastic member 5 also helps ensure a stable engagement between the connecting tube 2 and the connecting neck 10a. To disassemble the actuator from the valve, the locking member 9 must first be slid. A certain amount of force is then applied to disengage the locking protrusion 9a3 on the locking member 9 from the locking notch 3c. The locking member 9 then slides through the sliding notch 3d and into the positioning notch 3e. At this point, the locking member 9 slides out of the axial gap 6. Then, a certain amount of force is applied to the sliding sleeve 4, causing it to slide upward, overcoming the elastic force of the elastic member 5. The upper end face of the retaining ring 4b of the sliding sleeve 4 abuts against the lower end face of the housing 1, eliminating the axial gap 6. The retaining ring 4a on the sliding sleeve 4 then leaves the outer end of the through hole 2d, allowing the ball 8 to disengage from the annular groove 10b. The locking member 2 is then removed from the connecting neck 10a, releasing the locking member 2 from the connecting neck 10a. If the disassembly sequence is incorrect, such as pushing or pulling the sliding sleeve 4 before the locking member 9 is removed from the axial gap 6, the sliding sleeve 4 will not be able to slide upward, and the locking member 2 and connecting neck 10a cannot be released. Only the correct disassembly sequence can separate the actuator from the valve, effectively preventing the actuator and valve from being disconnected due to misoperation. Therefore, the elastic member 5 and the locking member 9 in the connection structure between the actuator and the valve form two anti-disassembly structures. Furthermore, disassembly requires the correct disassembly sequence and requires a certain amount of force, which increases the difficulty of disassembly and reduces the possibility of misoperation, thereby improving the reliability of the connection between the actuator and the valve.

[0046] Example 2

[0047] The clamping structure between the clamping block 3 and the locking member 9 is different from that of the first embodiment, while the other structures are the same as those of the first embodiment. A strip-shaped slot is provided on the operating handle of the locking member 9. The strip-shaped slot opens at one end near the connecting tube 2. The opening splits the limiting portion 9b in half, giving the operating handle a certain degree of elasticity. A clamping slot 3a is provided in the middle of the clamping block 3 along the radial direction of the connecting tube 2. The operating handle is embedded in the clamping slot 3a and can slide along the clamping slot 3a. A locking recess 3c is provided on the side wall of the clamping slot 3a. A locking protrusion 9a3 corresponding to the locking recess 3c is provided on the side of the operating handle. When the locking position protrusion 10c is embedded in the locking recess 3c, the limiting portion 9b is inserted into the axial gap 6.

[0048] Example 3

[0049] The structure of the fastening formed between the sleeve 4, connecting tube 2, and connecting neck 10a, as well as the mounting position of the elastic member 5, differ from that of the first embodiment. The other structures are the same as those of the first embodiment. An annular groove 10b is provided on the outer surface of the connecting neck 10a. Several blind holes are uniformly formed along the circumference of the inner surface of the connecting tube 2. A spring and a pin are inserted into each blind hole. The two ends of the spring respectively abut against the bottom surface of the blind hole and the pin. Under the action of the spring force, one end of the pin extends out of the blind hole and into the annular groove 10b, while the other end of the pin is located in the blind hole. The pin is made of a magnetic material, such as iron or an iron-nickel alloy. A magnet ring is provided on the sleeve 4, corresponding to the pin. When the sleeve 4 slides downward and abuts against the retaining ring 7, the magnet ring and the pin are offset. No suction force is generated between the magnet ring and the pin that would allow the pin to overcome the spring force. The pin remains in a state where one end is located in the annular groove 10b and the other end is located in the blind hole. When the sleeve 4 slides upward, causing the retaining ring 4b to rest against the lower end surface of the housing 1, the magnet ring and the pin are opposed, and a magnetic force is generated between the magnet ring and the pin, causing the pin to overcome the spring force, sliding toward the bottom surface of the blind hole and out of the annular groove 10b. The elastic member 5 is a compression spring fixed within the receiving groove 1a, with its two ends resting against the bottom surface of the receiving groove 1a and the upper end surface of the sleeve 4, respectively. The elastic member 5 can also be a tension spring, two of which are symmetrically arranged, one end of which is fixed to the sleeve 4 and the other end to the valve body 10.

[0050] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

Claims

1. A connection structure between an actuator and a valve, the actuator comprising a housing (1), the valve comprising a valve body (10), the connection structure comprising a connection cylinder (2) provided on the housing (1) and a connection neck (10a) provided on the valve body (10), the connection cylinder (2) and the connection neck (10a) being sleeve-connected, characterized in that: The outer side of the connecting tube (2) is provided with a sleeve (4) that can slide in the axial direction, and an elastic member (5) that can drive the sleeve (4) to slide toward the valve body (10) is provided between the sleeve (4) and the housing (1). After the sleeve (4) slides toward the valve body (10), the connecting tube (2) can be fixed on the connecting neck (10a) and an axial gap (6) is formed between the sleeve (4) and the housing (1). A locking member (9) that can slide radially along the connecting tube (2) is clamped on the housing (1). When the locking member (9) slides toward the connecting tube (2), the locking member (9) can be inserted into the axial gap (6) and locked on the housing (1). The housing (1) has a protruding clamping block (3), and a clamping groove (3a) is provided on the clamping block (3). The locking member (9) is embedded in the clamping groove (3a) and can slide along the clamping groove (3a).

2. The connection structure between the actuator and the valve according to claim 1, characterized in that: The clamping block (3) is also provided with a recessed locking recess (3c), and the locking piece (9) has a protruding locking projection (9a3) capable of being embedded in the locking recess (3c). When the locking projection (9a3) is embedded in the locking recess (3c), the locking piece (9) is inserted into the axial gap (6).

3. The connection structure between the actuator and the valve according to claim 2, characterized in that: The locking member (9) has a strip-shaped sliding groove (9a1), the clamping block (3) is embedded in the sliding groove (9a1), there are two clamping grooves (3a) and they are respectively located on both sides of the clamping block (3), and the two side walls of the sliding groove (9a1) are embedded in the corresponding clamping grooves (3a).

4. The connection structure between the actuator and the valve according to claim 3, characterized in that: There are two locking notches (3c) located on both sides of the clamping block (3), and there are two locking protrusions (9a3) arranged in one-to-one correspondence with the locking notches (3c).

5. The connection structure between an actuator and a valve according to any one of claims 1 to 4, characterized in that: A guide groove (3b) is provided on the clamping block (3) along the radial direction of the connecting cylinder (2), and a guide strip (9a2) is provided on the locking piece (9) and is inserted into the guide groove (3b).

6. The connection structure between an actuator and a valve according to any one of claims 2 to 4, characterized in that: The clamping block (3) is also provided with a concave sliding recess (3d) and a positioning recess (3e), and the locking protrusion (9a3) can be embedded in the sliding recess (3d) and the positioning recess (3e). When the locking protrusion (9a3) is embedded in the positioning recess (3e), the locking member (9) is disengaged from the axial gap (6), and the sliding recess (3d) is located between the locking recess (3c) and the positioning recess (3e).

7. The connection structure between an actuator and a valve according to any one of claims 1 to 4, characterized in that: The locking member (9) is Y-shaped and comprises a straight-handle-shaped driving handle (9a) and an arc-shaped or V-shaped limiting portion (9b). The driving handle (9a) is embedded in the clamping groove (3a). The limiting portion (9b) is located on one end of the driving handle (9a) close to the connecting cylinder (2). The limiting portion (9b) can be inserted into the axial gap (6).

8. The connection structure between the actuator and the valve according to claim 7, characterized in that: The driving handle (9a) has a protruding force projection (9c) on one end away from the connecting cylinder (2).

9. The connection structure between an actuator and a valve according to any one of claims 1 to 4, characterized in that: An annular groove (10b) is provided on the outer side of the connecting neck (10a), a protruding retaining ring (4a) is provided on the inner side of the sliding sleeve (4), a retaining shoulder (2b) and a fixing groove (2c) are provided on the outer side of the connecting tube (2), the fixing groove (2c) is close to the valve body (10), the retaining ring (4a) is located between the retaining shoulder (2b) and the fixing groove (2c), a retaining ring (7) is fixed in the fixing groove (2c), and a plurality of through holes (2d) are provided on the side wall of the connecting tube (2) along the circumferential direction, the through holes ( 2d) is located between the fixing groove (2c) and the shoulder (2b), and a ball (8) is installed in each through hole (2d). The elastic member (5) is a compression spring. The elastic member (5) is mounted on the outside of the connecting tube (2) and the two ends of the elastic member (5) respectively abut against the retaining ring (4a) and the shoulder (2b). Under the action of the elastic force of the elastic member (5), the retaining ring (4a) abuts against the retaining ring (7), and the retaining ring (4a) blocks the outer end of the through hole (2d) so that the inner side of the ball (8) is embedded in the annular groove (10b).

Images