Anti-violent-damage ball valve with lock

Abstract

The utility model belongs to the field of ball valves, and particularly discloses an anti-violent-damage ball valve with a lock, the anti-violent-damage ball valve comprises a ball valve main body, a valve rod, a limiting ring, a rotating cover, a magnetic sliding block and a compression spring, the fixed end of the valve rod extends into the ball valve main body and is connected with a sealing ball in the ball valve main body, and the free end of the valve rod is arranged outside the ball valve main body; the limiting ring sleeves the outer side of the free end of the valve rod and is fixedly connected with the ball valve main body; two limiting tables are symmetrically arranged on the inner wall of the limiting ring by taking the circle center as an original point; the rotary cover sleeves the outer side of the free end of the valve rod and is rotationally connected with the ball valve main body; a containing groove is formed in the lower end of the magnetic sliding block, and the magnetic sliding block is arranged in the rotary cover and can move up and down in the rotary cover; the compression spring is arranged between the magnetic sliding block and the ball valve body. The ball valve limiting switch with the lock can be achieved, meanwhile, the situation that the ball valve body is damaged and fails due to brute force in the locking state can be prevented, and therefore the violent damage prevention effect is achieved.

Description

Technical Field

[0001] The present application belongs to the field of ball valves, and more specifically, relates to a ball valve with a lock that is resistant to violent destruction. Background Art

[0002] Ordinary ball valves can be opened and closed by turning the handle, which is difficult to manage and poses a major safety hazard. The lockable ball valve optimizes the ball valve structure and can be locked and unlocked by the key assembly, thereby effectively preventing the ball valve from being opened or closed at will, making it easier to manage and having a good anti-theft effect.

[0003] In the prior art, the ball valve with lock usually uses magnetic induction technology to achieve the locking and unlocking of the ball valve. CN204985971U discloses a magnetic induction ball valve with lock, which achieves the locking and unlocking of the ball valve by opening a blind hole for placing a magnetic steel on the connecting seat and the valve cover sleeve. However, the magnetic induction ball valve with lock adopts a clamping connection method, which cannot achieve dustproof and waterproof effects, and the lock head cannot achieve idling, and thus cannot prevent the problem of the locking structure being damaged due to brute force rotation. Utility Model Content

[0004] In response to the defects or improvement needs of the prior art, the present application provides a lockable ball valve that is resistant to violent damage, aiming to solve the problem that the existing lockable ball valve cannot achieve idling and cannot prevent damage by violent rotation.

[0005] The present application provides a ball valve with a lock that is resistant to violent destruction, specifically comprising:

[0006] A ball valve body and a valve stem, wherein the fixed end of the valve stem extends into the interior of the ball valve body and is connected to the sealing ball inside the ball valve body, and the free end of the valve stem is placed outside the ball valve body, and the sealing ball is driven to rotate by the valve stem to realize the opening and closing of the locked ball valve;

[0007] A limit ring, which is sleeved on the outside of the free end of the valve stem and fixedly connected to the ball valve body. The inner wall of the limit ring is symmetrically provided with two limit platforms with the center of the circle as the origin, and the space between the two limit platforms is the rotation space of the valve stem;

[0008] A rotating cover, which is sleeved on the outside of the free end of the valve stem and is rotatably connected to the ball valve body;

[0009] A magnetic slider, which is arranged inside the rotating cover and can rotate synchronously with the rotating cover. The magnetic slider can also move up and down inside the rotating cover. A receiving groove is formed at the lower end of the magnetic slider, which is used to connect with the free end of the valve stem in the unlocked state to drive the valve stem to rotate;

[0010] A compression spring is arranged between the magnetic slider and the ball valve body and is used to separate the magnetic slider from the free end of the valve stem in a locked state.

[0011] The above technical scheme conceived by the present application is compared with the prior art, because the present application arranges a magnetic slider that can move up and down inside the rotating cover, and opens an accommodating groove at the lower end of the magnetic slider, so that it can be connected with the free end of the valve stem in the unlocked state, and the ball valve can be opened and closed by driving the valve stem to rotate, and the free end of the valve stem can be separated in the locked state to realize the idling of the rotating cover, thereby avoiding the destruction of the main structure of the ball valve due to brute force rotation in the locked state, thereby achieving the beneficial effect of preventing violent damage, and at the same time, by setting a limit ring, the rotation angle of the valve stem can be limited to realize a limit switch for a locked ball valve.

[0012] As a further preferred embodiment, the first side of the limiting platform is perpendicular to the second side, and the distance between the two first side and the two second side is the width of the free end of the valve stem.

[0013] As a further preference, the outer wall of the limiting ring is provided with one or more lugs, and the top of the ball valve body is provided with grooves corresponding to the lugs for accommodating the lugs to fix the limiting ring.

[0014] As a further preferred embodiment, the ball valve body further includes:

[0015] A valve body and a valve cover, wherein the valve body and the valve cover are connected to form a liquid flow channel, and the top end of the valve body is rotatably connected to the rotating cover;

[0016] A valve seat is arranged inside the liquid flow channel and is used to support the sealing ball.

[0017] As a further preferred embodiment, the ball valve body also includes a pressure cover, one end of which is fixedly connected to the valve body, the other end of which is provided with a pressure ring arranged opposite to the valve body and cooperating with the valve body to form an annular space, and the bottom end of the rotating cover is provided with a boss extending outward and extending into the annular space.

[0018] As a further preference, a first sealing ring is provided between the valve stem and the valve body, and a second sealing ring is provided between the valve body and the rotating cover.

[0019] As a further preference, the magnetic slider adopts a polygonal structure and matches the shape of the interior of the rotating cover, and a blind hole is opened on the upper end surface of the magnetic slider for installing the first magnetic member.

[0020] As a further preference, the free end of the valve stem is an I-shaped structure, and the accommodating groove at the lower end of the magnetic slider is an I-shaped, a X-shaped or an X-shaped structure.

[0021] As a further preference, an annular boss is provided at the bottom of the magnetic slider, and one end of the compression spring is sleeved on the outer side of the annular boss.

[0022] As a further preference, the locked ball valve further comprises a key assembly, and the magnetism of the lower end of the key assembly is the same as the magnetism of the upper end of the magnetic slider.

[0023] In general, the above technical solutions conceived by this application have the following technical advantages compared with the prior art:

[0024] 1. The present application sets a limit ring on the outside of the valve stem to limit the rotation angle of the valve stem, thereby realizing a limit switch of the locked ball valve. At the same time, a rotating cover connected to the ball valve body is set, and a magnetic slider that can move up and down is set inside the rotating cover. Under the action of magnetic repulsion, the magnetic slider can move downward and be connected to the free end of the valve stem through the accommodating groove, so that the rotating cover can drive the valve stem to rotate to realize the opening and closing of the ball valve, thereby putting the ball valve in an unlocked state. After the magnetic repulsion is removed, the magnetic slider moves upward under the action of the reset spring and separates from the free end of the valve stem, thereby putting the ball valve in a locked state, and normal rotation of the rotating cover cannot open or close the ball valve, thereby achieving an idling effect, preventing the ball valve body from being damaged and malfunctioning due to brute force rotation in the locked state, and further improving the anti-theft performance of the locked ball valve.

[0025] 2. In particular, the present application can realize a 90° limit switch with a locked ball valve by optimizing the shape and relative position relationship of the limit platform;

[0026] 3. At the same time, the present application designs the magnetic slider to be a polygonal structure that matches the internal shape of the rotating cover, thereby ensuring that the magnetic slider moves up and down while avoiding relative rotation between the magnetic slider and the rotating cover, thereby ensuring the effectiveness of the locked ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of a lockable ball valve in a locked state provided by an embodiment of the present application;

[0028] Figure 2 It is a schematic diagram of the overall structure of the anti-violent destruction locked ball valve provided in an embodiment of the present application in an unlocked state;

[0029] Figure 3 1 is a schematic diagram of the structure of a magnetic slider in a lockable ball valve that is resistant to violent destruction provided by an embodiment of the present application, wherein (a) is a stereoscopic view, (b) is a front view, (c) is a bottom view, and (d) is a left view;

[0030] Figure 4It is a structural schematic diagram of a key assembly in a locked ball valve that is resistant to violent destruction provided in an embodiment of the present application;

[0031] Figure 5 It is a schematic structural diagram of a limit ring in a lockable ball valve that is resistant to violent destruction provided in an embodiment of the present application;

[0032] Figure 6 This is a main schematic diagram of the installation of a limit ring in a lockable ball valve that is resistant to violent destruction provided in an embodiment of the present application;

[0033] Figure 7 It is a three-dimensional schematic diagram of a limit ring in a locked ball valve that is resistant to violent destruction provided in an embodiment of the present application.

[0034] Throughout the drawings, the same reference numerals are used to denote the same elements or structures, wherein:

[0035] 1-sealing ball, 2-valve seat, 3-first sealing ring, 4-valve stem, 5-limiting ring, 51-limiting platform, 511-first side, 512-second side, 52-lug, 6-rotating cover, 7-magnetic slider, 8-valve cover, 9-first magnetic part, 10-valve body, 11-compression spring, 12-pressure cover, 13-unlocking part, 14-transmission column, 15-second sealing ring, 16-second magnetic part. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0037] like Figures 1 to 3 As shown, the present application provides a ball valve with a lock that is resistant to violent destruction, specifically comprising:

[0038] The ball valve body and the valve stem 4, the ball valve body includes a valve body 10, a valve cover 8, a sealing ball 1 and a valve seat 2, the valve body 10 is connected with the valve cover 8 to form a liquid flow channel, one end of the liquid channel is an inlet, and the other end is an outlet, the upper end of the valve body 10 has a connecting seat communicated with the inner cavity of the valve body 10, and the middle of the connecting seat has an opening; the sealing ball 1 is fixed inside the liquid flow channel through the valve seat 2 and can rotate relative to the valve seat 2 and the liquid flow channel, and a transverse flow channel is provided inside the sealing ball 1, when the transverse flow channel is in the same direction as the liquid flow channel, the locked ball valve is in an open state, and when the transverse flow channel is perpendicular to the liquid flow channel, the locked ball valve is in a closed state; the fixed end of the valve stem 4 extends from the center hole of the connecting seat into the inner cavity of the valve body 10, and is fixedly connected to the sealing ball 1, and the free end of the valve stem 4 is placed outside the ball valve body, and the valve stem 4 can drive the sealing ball 1 to rotate to control the opening and closing of the locked ball valve;

[0039] The limit ring 5 is sleeved on the outer side of the free end of the valve stem 4. The limit ring 5 is fixedly connected to the ball valve body. The inner wall of the limit ring 5 is symmetrically provided with two limit platforms 51 with the center of the circle as the origin. The space between the two limit platforms 51 is the rotation space of the valve stem 4, thereby limiting the rotation angle of the valve stem 4, thereby realizing the limit switch of the locked ball valve;

[0040] The rotating cover 6 is sleeved on the outer side of the free end of the valve stem 4 and is rotatably connected to the connecting seat of the ball valve body. The rotating cover 6 can not only rotate relative to the ball valve body, but also seal the ball valve body to achieve dustproof and waterproof effects.

[0041] In order to achieve the function of preventing violent destruction, the locked ball valve also includes a magnetic slider 7 and a compression spring 11. The magnetic slider 7 is arranged inside the rotating cover 6 and can rotate synchronously with the rotating cover 6. At the same time, the magnetic slider 7 can also move up and down inside the rotating cover 6. A receiving groove is opened at the lower end of the magnetic slider 7. When the magnetic slider 7 moves downward due to the magnetic repulsive force, the magnetic slider 7 is connected to the free end of the valve stem 4 through the receiving groove, so that the locked ball valve is in an unlocked state, and the rotating cover 6 can drive the valve stem 4 to rotate, so that the locked ball valve can be freely opened or closed; the compression spring 11 is arranged on the magnetic slider 7. When the magnetic slider 7 moves downward due to the magnetic repulsion, the compression spring 11 will be compressed. When the magnetic repulsion is removed, the compression spring 11 will drive the magnetic slider to move upward, so that the magnetic slider 7 is separated from the free end of the valve stem 4, so that the locked ball valve is in a locked state, and the rotating cover 6 cannot drive the valve stem 4 to rotate. Normal rotation of the rotating cover 6 cannot open or close the locked ball valve, thereby preventing the ball valve body from being damaged or malfunctioning due to brute force in the locked state, playing a role in preventing violent damage, and further improving the safety and reliability of the locked ball valve.

[0042] Since the present application provides a magnetic slider that can move up and down inside the rotating cover, and opens an accommodating groove at the lower end of the magnetic slider, it can be connected to the free end of the valve stem in the unlocked state, and the ball valve can be opened and closed by driving the valve stem to rotate, and the free end of the valve stem can be separated in the locked state to achieve idling of the rotating cover, thereby avoiding damage to the main structure of the ball valve due to brute force rotation in the locked state, thereby achieving the beneficial effect of preventing violent damage. At the same time, by providing a limit ring 5, the rotation angle of the valve stem 4 can be limited, thereby realizing a limit switch with a locked ball valve.

[0043] Further, considering that the free end of the valve stem 4 is an "I"-shaped structure, in order to realize the 90° limit switch of the ball valve, Figure 5As shown, the first side 511 of the limit platform 51 is perpendicular to the second side 512, and the distance between the two first side edges 511 and the two second side edges 512 is the width of the free end of the valve stem 4, thereby ensuring that the free end of the valve stem 4 abuts against the two first side edges 511 or the two second side edges 512 when the locked ball valve is opened or closed, thereby ensuring the accuracy of the 90° limit switch of the locked ball valve.

[0044] Further, if Figure 6 , 7 As shown, the connection methods of the stop ring 5 and the ball valve body include but are not limited to threaded connection, welding, adhesive connection and plug-in connection. In order to facilitate assembly and reduce maintenance costs, plug-in connection is preferably adopted. In a preferred embodiment of the present application, the outer wall of the stop ring 5 is provided with one or more lugs 52, and the top of the ball valve body is provided with a groove corresponding to the lug 52, which is used to accommodate the lug 52 to fix the stop ring 5.

[0045] In one embodiment of the present application, the rotating cover 6 is rotatably connected to the valve body 10 via a thread, but the reliability of this connection method is relatively poor, and it is easy to disassemble, which may cause the locked ball valve to fail. Therefore, in another embodiment of the present application, the ball valve body also includes a gland 12, one end of which is fixedly connected to the valve body 10, and the other end of the gland 12 is provided with a compression ring arranged opposite to the valve body and cooperates with the connecting seat of the valve body 10 to form an annular space, and the bottom end of the rotating cover is provided with a boss extending outward and extending into the annular space. Because the gland 12 is not provided with a wrench, the locked ball valve cannot be destroyed by opening the gland 12, thereby obtaining a better anti-theft effect.

[0046] Furthermore, in order to improve the sealing performance of the locked ball valve, a first sealing ring 3 is provided between the valve stem 4 and the central hole wall of the valve body 10 connection seat, and a second sealing ring 15 is provided between the rotating cover 6 and the outer wall of the valve body 10 connection seat.

[0047] Furthermore, the magnetic slider 7 adopts a polygonal structure and matches the shape of the inside of the rotating cover 6, so as to ensure that the magnetic slider 7 can rotate synchronously with the rotating cover 6. Considering the difficulty of forming and the reliability of assembly, the polygon is preferably a triangle, a quadrilateral, a pentagon, a hexagon or an octagon. At the same time, a blind hole is opened on the upper end surface of the magnetic slider 7 for installing the first magnetic member 9. The number of the first magnetic members is preferably 2 to 6. Too few will result in too small magnetic repulsion, which is insufficient to overcome the elastic force of the compression spring 11 to push the magnetic slider 7 to connect with the free end of the valve stem 4. Too many will increase the manufacturing cost and make the weight of the magnetic slider 7 too large. When the weight of the magnetic slider 7 is too large, the pressure of the magnetic slider 7 on the compression spring 11 will increase, reducing the service life of the compression spring 11. In order to further reduce the mass of the magnetic slider 7, a weight reduction groove is opened on the upper end of the magnetic slider 7, and the first magnetic member 9 is arranged around the outside of the weight reduction groove.

[0048] Furthermore, the free end of the valve stem 4 is an "I"-shaped structure, and the shape of the accommodating groove at the lower end of the magnetic slider 7 is preferably an "I"-shaped, "X"-shaped or "X"-shaped. Compared with the "I"-shaped accommodating groove, when the shape of the accommodating groove is a "X"-shaped or "X"-shaped, only a smaller rotation angle is required to achieve the connection between the magnetic slider 7 and the free end of the valve stem 4, making the unlocking process simpler.

[0049] Furthermore, one end of the compression spring abuts against the magnetic slider 7. In order to facilitate the fixation of the compression spring 11 and avoid the change of the elastic force direction caused by the tilt of the compression spring 11, an annular boss is provided at the bottom of the magnetic slider 7. One end of the compression spring 11 is sleeved on the outside of the annular boss, and the other end of the compression spring 11 is sleeved on the outside of the free end of the valve stem 4 and abuts against the limit ring 5.

[0050] In a preferred embodiment of the present application, in order to unlock the locked ball valve, the locked ball valve further includes a key assembly, the lower end of the key assembly has the same magnetism as the upper end of the magnetic slider 7, so when the key assembly is sleeved on the outside of the rotating cover 6, a magnetic repulsion force is generated, causing the magnetic slider 7 to move downward and connect with the free end of the valve stem 4. When the key assembly is separated from the rotating cover 6, the magnetic repulsion force disappears, and the magnetic slider 7 moves upward under the drive of the compression spring 11, and then separates from the free end of the valve stem 4. Specifically, as Figure 4 As shown, the key assembly includes an unlocking member 13, the bottom of which is provided with a groove matching the external shape of the top of the rotating cover 6, and the shape of the groove is any shape other than a circle, thereby ensuring that the unlocking member 13 can drive the rotating cover 6 to rotate synchronously, and the lower end surface of the unlocking member 13 is provided with a blind hole for installing the second magnetic member 16.

[0051] It should be noted that the number of the second magnetic members 16 may be the same as or different from the number of the first magnetic members 9. The number and arrangement angle of the second magnetic members 16 are preferably the same as those of the first magnetic members 9, and when the unlocking member 13 is sleeved on the outside of the rotating cover 6, the first magnetic members 9 and the second magnetic members 16 can be arranged one-to-one, thereby generating the maximum magnetic repulsion.

[0052] Furthermore, the key assembly also includes a transmission column 14, which is arranged at both ends of the unlocking member 13 or passes through the unlocking member 13. By arranging the transmission columns 14 extending outward at both ends of the unlocking member, the pressure bearing capacity and torsion resistance of the key assembly can be further improved.

[0053] It should be understood that expressions such as "include" and "may include" used in this application indicate the existence of the disclosed functions, operations or constituent elements, and do not limit one or more additional functions, operations and constituent elements. In this application, terms such as "include" and / or "have" may be interpreted as indicating specific characteristics, numbers, operations, constituent elements, components or combinations thereof, but may not be interpreted as excluding the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components or combinations thereof.

[0054] It should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0055] 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0056] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0057] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A ball valve with lock to prevent violent damage, characterized in that: The lockable ball valve comprises: A ball valve body and a valve stem (4), wherein the fixed end of the valve stem (4) extends into the interior of the ball valve body and is connected to a sealing ball (1) inside the ball valve body, and the free end of the valve stem (4) is placed outside the ball valve body, and the sealing ball (1) is driven to rotate by the valve stem (4) to realize the opening and closing of the locked ball valve; A limit ring (5), wherein the limit ring (5) is sleeved on the outer side of the free end of the valve stem (4), and the limit ring (5) is fixedly connected to the ball valve body, and the inner wall of the limit ring (5) is symmetrically provided with two limit platforms (51) with the center of the circle as the origin, and the space between the two limit platforms (51) is the rotation space of the valve stem (4); A rotating cover (6), which is sleeved on the outside of the free end of the valve stem (4) and is rotatably connected to the ball valve body; A magnetic slider (7), the magnetic slider (7) being arranged inside the rotating cover (6) and being capable of rotating synchronously with the rotating cover (6), and the magnetic slider (7) being capable of moving up and down inside the rotating cover (6), and a receiving groove being provided at the lower end of the magnetic slider (7) for connecting with the free end of the valve stem (4) in an unlocked state to drive the valve stem (4) to rotate; A compression spring (11) is arranged between the magnetic slider (7) and the ball valve body and is used to separate the magnetic slider (7) from the free end of the valve stem (4) in a locked state.

2. The anti-violent destruction lockable ball valve according to claim 1, characterized in that: The first side edge (511) of the limiting platform (51) is perpendicular to the second side edge (512), and the distance between the two first side edges (511) and the two second side edges (512) is equal to the width of the free end of the valve stem (4).

3. The anti-violent destruction lockable ball valve according to claim 1, characterized in that: The outer wall of the limiting ring (5) is provided with one or more lugs (52), and the top of the ball valve body is provided with a groove corresponding to the lug (52) for accommodating the lug (52) to fix the limiting ring (5).

4. The anti-violent destruction lockable ball valve according to claim 1, characterized in that: The ball valve body also includes: A valve body (10) and a valve cover (8), wherein the valve body (10) and the valve cover (8) are connected to form a liquid flow channel, and the top end of the valve body (10) is rotatably connected to the rotating cover (6); A valve seat (2), wherein the valve seat (2) is arranged inside the liquid flow channel and is used to support the sealing ball (1).

5. The anti-violent destruction lockable ball valve according to claim 4, characterized in that: The ball valve body also includes a gland (12), one end of which is fixedly connected to the valve body (10), the other end of which is provided with a compression ring arranged opposite to the valve body and cooperates with the valve body (10) to form an annular space, and the bottom end of the rotating cover is provided with a boss extending outward and extending into the annular space.

6. The anti-violent-damage lockable ball valve according to claim 4, characterized in that: A first sealing ring (3) is arranged between the valve stem (4) and the valve body (10), and a second sealing ring (15) is arranged between the valve body (10) and the rotating cover (6).

7. The anti-violent-damage lockable ball valve according to claim 1, characterized in that: The magnetic slider (7) has a polygonal structure and matches the shape of the interior of the rotating cover (6). The upper end surface of the magnetic slider (7) is provided with a blind hole for mounting the first magnetic member (9).

8. The anti-violent-damage lockable ball valve according to claim 1, characterized in that: The free end of the valve stem (4) is an "I"-shaped structure, and the accommodating groove at the lower end of the magnetic slider (7) is an "I"-shaped, "X"-shaped or "X"-shaped.

9. The anti-violent destruction lockable ball valve according to claim 1, characterized in that: An annular boss is provided at the bottom of the magnetic slider (7), and one end of the compression spring (11) is sleeved on the outside of the annular boss.

10. The anti-violent destruction lockable ball valve according to any one of claims 1 to 9, characterized in that: The locked ball valve further comprises a key assembly, the lower end of the key assembly having the same magnetic properties as the upper end of the magnetic slider (7).

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