A lock-controlled ball valve and its installation method

Abstract

The present invention discloses a lock-controlled ball valve and its installation method, including: a valve body and a ball. The ball is movably arranged in the valve body. It is characterized in that a convex neck is integrally formed on the valve body. An opening and closing groove is provided on the side wall of the convex neck. A valve stem that is movably arranged in the convex neck and is engaged with the ball is provided in the convex neck. An opening and closing assembly is also provided in the convex neck. The opening and closing assembly includes: a swivel base, which is rotatably embedded in the convex neck and is connected to the upper end of the valve stem; a handle, one end of the handle penetrates through the opening and closing groove and extends into the swivel base. The handle drives the swivel base to rotate, thereby driving the valve stem and the ball to rotate, realizing the opening and closing of the lock-controlled ball valve. The present invention has high positioning accuracy, strong anti-destruction ability and has an anti-unlocking function.

Description

Technical Field

[0001] The present invention relates to the technical field of ball valves, and in particular to a locking ball valve and an installation method thereof. Background Art

[0002] There are two main types of existing magnetic lock ball valves:

[0003] The first type: The magnetic lock ball valve has only one mode. When the ball valve switches from fully open to fully closed, it is in a closed and locked state. This is an early magnetic lock ball valve mode with limited functions.

[0004] The second method: by adding some auxiliary parts and improving the structure, the two modes of "normal + management" can be switched, such as the Chinese patent discloses a lock-control ball valve and a dual-function valve;

[0005] In normal mode, users can open and close the valve freely; in management mode, if the user is in arrears with water bills or has not opened an account to install a gas meter, the water company and gas company will lock the valve with a special key, and the user cannot use it normally. After the arrears problem is solved and the gas meter is opened and installed, the valve is unlocked with a special key and restored to normal mode. However, there are some problems with the "normal + management" dual-mode valves.

[0006] A dual-function valve (ZL201320217932.2): It can be used as an ordinary valve under normal circumstances. When malicious arrears occur, the valve is closed by turning the conversion paddle, and becomes a lock valve. After closing, insert a special key, open the valve and turn the conversion paddle again, and the valve can be used as an ordinary valve. The switching between the two functions of magnetic lock valve and ordinary valve is realized through a conversion paddle, but during use, there are the following problems:

[0007] 1. The switching form of the conversion paddle has poor visibility. If you don't understand the function of the conversion paddle, it is easy to operate it incorrectly. In addition, the material of the conversion paddle is easy to deform and damage, resulting in the inability to switch between the two functions;

[0008] 2. Because the valve rotation positioning mechanism and the magnetic locking mechanism are on the same rotating surface, during the opening and closing process of the valve, due to the poor accuracy of the positioning pin and the positioning surface, the magnetic pin and the magnetic pin hole are not aligned, and the magnetic pin is subjected to different degrees of shear force. Due to the brittleness of the magnetic material, the magnet is easily damaged;

[0009] 3. The anti-theft function is poor and can be unlocked with just two magnets.

[0010] Lock-controlled ball valve (ZL201720428734.9): The limiting member of the invented lock-controlled ball valve is installed in the cavity so as to move up and down and is limited within the cavity. A second return elastic member is provided between the limiting member and the bottom wall of the cavity. In this way, when unlocking the handle and the valve stem, under the action of the second return elastic member, the handle will be bounced downward, making the ball valve in a free switching state; when the handle is pulled upward to a certain position, the magnetic locking assembly will lock the handle and the valve stem, and the ball valve will be in a locked state. This structural setting has the following problems:

[0011] 1. When the ball valve is in a free switching state, the magnetic locking assembly is in close contact with the valve stem and is pressed against the surface of the valve stem under the action of the second elastic member. When rotating the valve stem to open and close the ball valve, the valve stem rubs against the magnetic locking assembly, and the magnetic locking assembly is extremely easy to wear, thus affecting the locking function;

[0012] 2. Poor anti-theft performance. Just place two magnets corresponding to the outside of the magnetic locking assembly to unlock it; 3. Prone to misoperation. When the handle is pulled upward, the valve will be locked, and there is no anti-error measure. Summary of the Invention

[0013] Aiming at the above problems existing in the existing lock-controlled ball valve, the present invention aims to provide a lock-controlled ball valve and its installation method, which have high positioning accuracy, strong anti-destruction performance, and an anti-unlocking function.

[0014] The specific technical solutions are as follows:

[0015] A lock-controlled ball valve, comprising: a valve body and a ball. The ball is movably arranged in the valve body. It is characterized in that a convex neck is integrally formed on the valve body, an opening and closing groove is provided on the side wall of the convex neck, a valve stem engaged with the ball is movably arranged in the convex neck, and an opening and closing assembly is further provided in the convex neck;

[0016] The opening and closing assembly includes:

[0017] A swivel base, the swivel base is rotatably embedded in the convex neck, and the swivel base is connected to the upper end of the valve stem;

[0018] A handle, one end of the handle penetrates through the opening and closing groove and extends into the swivel base. The handle drives the swivel base to rotate, thereby driving the valve stem and the ball to rotate, realizing the opening and closing of the lock-controlled ball valve.

[0019] For the above lock-controlled ball valve, wherein, a first hole and a second hole communicating with each other are provided along the radial direction in the swivel base. The first hole and the second hole are coaxially arranged. The diameter of the first hole is larger than the diameter of the second hole, and a first step is formed between the first hole and the second hole;

[0020] The side wall of the convex neck is also provided with a third hole and a fourth hole that communicate with each other along its radial direction. The third hole and the fourth hole are coaxially arranged. The diameter of the third hole is smaller than the diameter of the fourth hole. The diameter of the fourth hole is equal to the diameter of the first hole. A second step is formed between the third hole and the fourth hole;

[0021] One end of the handle sequentially penetrates through the opening and closing groove and the second hole;

[0022] The swivel base is operably in a first position and a second position;

[0023] When the swivel base is in the first position, the handle is arranged in a first direction. The fourth hole and the first hole are coaxially arranged. The end of one end of the handle is limited between the first step and the second step;

[0024] When the swivel base is in the second position, the handle is arranged in a second direction. The central axis of the fourth hole is perpendicular to the central axis of the first hole;

[0025] The first direction and the second direction are perpendicular to each other.

[0026] For the above lock-controlled ball valve, wherein, the lock-controlled ball valve further includes: a limit screw, the limit screw is fixedly connected to one end of the handle, the limit screw is movably arranged in the first hole or the fourth hole, and the handle can be movably arranged along the second hole;

[0027] When the swivel base is in the first position, the limit screw extends into the fourth hole;

[0028] When the swivel base is in the second position, the limit screw is located in the first hole;

[0029] One end of the handle is provided with a fixing hole, anaerobic glue is applied in the fixing hole, the limit screw is fixedly connected to the fixing hole, and the anaerobic glue fixes the limit screw and the handle.

[0030] For the above lock-controlled ball valve, wherein, the handle is in limit fit with both sides of the opening and closing groove;

[0031] When the swivel base is in the first position, the handle is in limit fit with one side of the opening and closing groove;

[0032] When the swivel base is in the second position, the handle is in limit fit with the other side of the opening and closing groove;

[0033] Both the upper and lower surfaces of the opening and closing groove are flat surfaces, and both side surfaces of the opening and closing groove are arc surfaces. The radian of the arc surface is the same as the radian of both sides of the handle.

[0034] The above-mentioned lock control ball valve, wherein the limit screw includes a connecting portion and a limiting portion connected to each other, the limiting portion is cylindrical, the diameter of the limiting portion is equal to the diameter of the fourth hole, and the connecting portion is fixedly connected to one end of the handle;

[0035] When the swivel base is in the first position, the limiting portion is located in the fourth hole;

[0036] When the swivel base is in the second position, the limiting portion is located in the first hole.

[0037] The above-mentioned lock control ball valve, wherein three annular grooves are provided on the handle along its length direction, two first mounting holes are provided in the swivel base, and magnetic control components are provided in both of the two first mounting holes;

[0038] When the swivel base is in the first position, the two magnetic control components are respectively in axial limiting cooperation with the two annular grooves located on both sides along the handle;

[0039] When the swivel base is in the second position, one magnetic control component is in axial limiting cooperation with the middle annular groove along the handle, and the other magnetic control component abuts against the side wall of the handle;

[0040] When the swivel base is in the first position, the two magnetic control components are respectively in axial limiting cooperation with the two annular grooves located on both sides along the handle;

[0041] When the swivel base is in the second position, one magnetic control component is in axial limiting cooperation with the middle annular groove along the handle, and the other magnetic control component abuts against the side wall of the handle;

[0042] Each of the magnetic control components includes: a first elastic member and a strong magnet, and the first elastic member abuts between the first mounting hole and the strong magnet;

[0043] The lock control ball valve further includes: a key, two second mounting holes are provided on the swivel base, the two first mounting holes are respectively aligned with the two second mounting holes, two magnets are provided on the key, and the two magnets are respectively placed in the two second mounting holes, and the two magnets are respectively in adsorption cooperation with the two strong magnets;

[0044] The two strong magnets are arranged with opposite magnetic polarities;

[0045] The diameters of the two second mounting holes are different.

[0046] The above-mentioned lock control ball valve, wherein the swivel base and the convex neck are fixedly connected by a retaining ring;

[0047] A first annular groove is provided on the outer periphery of the swivel base, a second annular groove is provided on the inner periphery of the convex neck, and the retaining ring is disposed in the first annular groove and the second annular groove;

[0048] A first convex ring is provided in the third hole;

[0049] A locking assembly is provided in the third hole. The locking assembly includes a locking rod and a second elastic member. The locking rod is movably disposed in the third hole. A second convex ring is provided on the outer periphery of the locking rod. The second elastic member is sleeved on the locking rod. One end of the second elastic member abuts against the second convex ring, and the other end of the second elastic member abuts against one end of the third hole away from the fourth hole;

[0050] The locking assembly further includes a locking cover. The locking cover covers the third hole, and the other end of the second elastic member abuts against the locking cover;

[0051] A locking hole is provided on the side wall of the swivel base. When the swivel base is in the second position, the end of the locking rod is in locking cooperation with the locking hole;

[0052] The second convex ring is limited between the first convex ring and the locking cover.

[0053] In the above-mentioned lock-controlled ball valve, a first accommodation space and a second accommodation space that communicate up and down are provided in the convex neck. The valve stem is rotatably disposed in the second accommodation space, the swivel base is rotatably disposed in the first accommodation space. Two first convex blocks are provided at the bottom of the swivel base, and a second convex block is provided at the top of the valve stem. The second convex block is fitted with the two first convex blocks, and the outer walls of the two first convex blocks are in rotational cooperation with the side wall of the second accommodation space;

[0054] A third step is provided between the first accommodation space and the second accommodation space, and the bottom of the swivel base is in limit cooperation with the third step;

[0055] A fourth step is provided on the peripheral wall of the convex neck in the second accommodation space. A fourth convex ring is provided on the peripheral side of the lower end of the valve stem. The fourth convex ring is in limit cooperation with the fourth step.

[0056] In the above-mentioned lock-controlled ball valve, a display mark is embedded on the top of the convex neck;

[0057] The display mark is located directly above the third hole and the fourth hole;

[0058] A third convex ring is provided on the peripheral side of the top of the swivel base. The third convex ring covers the top of the convex neck, and the third convex ring covers the display mark.

[0059] An installation method for a lock-controlled ball valve, which is applied to the lock-controlled ball valve described in any one of the above, and the installation method includes:

[0060] Step S1: Place the limit screw in the first hole of the swivel base;

[0061] Step S2: Place the swivel base and the limit screw together in the convex neck, and the swivel base is fixedly connected to the convex neck through the retaining ring;

[0062] Step S3: One end of the handle sequentially passes through the opening and closing groove and the second hole;

[0063] Step S4: Fix the handle. After passing a screwdriver through the third hole and the fourth hole in sequence, rotate the limit screw to fixedly connect the limit screw to the handle;

[0064] Step S5: Install the lock rod and the second elastic member into the third hole;

[0065] Step S6: Install the lock cover on the convex neck, and the lock cover limits the lock rod and the second elastic member.

[0066] The positive effects of the above technical solution compared with the prior art are:

[0067] The present invention has three modes:

[0068] 1. Management mode: The unlocking tool is owned by the manager, and the user has no key. After locking, the user cannot switch to the normal mode to freely open and close the valve;

[0069] 2. Normal + anti-accidental locking mode. The handle is provided with three annular grooves. Due to the fixation of one strong magnet, the handle cannot be displaced axially. During the process of opening and closing the ball valve, it will not cause misoperation to lock the ball valve;

[0070] 3. Normal + anti-accidental closing mode. When the valve needs to be in the open state for a long time, the equipped lock rod is matched with the lock control lock to prevent misoperation from closing the valve. When the valve needs to be closed, pull out the lock rod and rotate the swivel base interface. This mode is suitable for the state where the valve needs to be open for a long time, such as in the process of metal smelting and casting. If the cooling water valve is accidentally closed due to misoperation, it will cause accidents such as product scrapping and furnace explosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] Figure 1 It is a longitudinal structural sectional view of a lock-controlled ball valve of the present invention with the limit screw located in the first hole in the closed state of the ball valve;

[0072] Figure 2Longitudinal structural sectional view of a lock-controlled ball valve of the present invention with a limit screw located in the fourth hole in the closed state of the ball valve;

[0073] Figure 3 Transverse structural sectional view of a lock-controlled ball valve of the present invention with a lock rod and a lock hole in a limit fit in the open state of the ball valve;

[0074] Figure 4 Structural schematic diagram of a lock-controlled ball valve of the present invention with a limit screw fixedly connected to a handle;

[0075] Figure 5 Longitudinal structural sectional view of a lock-controlled ball valve of the present invention without a handle and a limit screw;

[0076] Figure 6 Structural schematic diagram of a valve body of a lock-controlled ball valve of the present invention;

[0077] In the drawings: 1, valve body; 2, sphere; 3, convex neck; 4, opening and closing groove; 5, valve stem; 6, swivel base; 7, handle; 8, limit screw; 9, fixing hole; 10, annular groove; 11, first hole; 12, second hole; 13, third hole; 14, fourth hole; 15, first step; 16, second step; 17, connecting part; 18, limiting part; 19, magnetic control assembly; 20, retaining ring; 21, first mounting hole; 22, first elastic member; 23, strong magnet; 24, second mounting hole; 25, key; 26, magnet; 27, first annular groove; 28, second annular groove; 29, locking assembly; 31, first convex ring; 32, second convex ring; 33, lock rod; 34, second elastic member; 35, lock cover; 36, lock hole; 37, first accommodating space; 38, second accommodating space; 39, first convex block; 40, second convex block; 41, third step; 42, fourth step; 43, fourth convex ring; 44, display mark; 45, third convex ring. Detailed Description of the Invention

[0078] The present invention will be further described below in conjunction with the drawings and specific embodiments, but it is not intended to limit the present invention.

[0079] Figure 1 Longitudinal structural sectional view of a lock-controlled ball valve of the present invention with a limit screw located in the first hole in the closed state of the ball valve, Figure 2 Longitudinal structural sectional view of a lock-controlled ball valve of the present invention with a limit screw located in the fourth hole in the closed state of the ball valve, Figure 3 Transverse structural sectional view of a lock-controlled ball valve of the present invention with a lock rod and a lock hole in a limit fit in the open state of the ball valve, Figure 4 Structural schematic diagram of a lock-controlled ball valve of the present invention with a limit screw fixedly connected to a handle, Figure 5 Longitudinal structural sectional view of a lock-controlled ball valve of the present invention without a handle and a limit screw, Figure 6This is a schematic structural diagram of the valve body of a lock-controlled ball valve according to the present invention. As shown in Figures 1 to 6 the figure, a lock-controlled ball valve of a preferred embodiment is shown, including: a valve body 1 and a ball 2. The ball 2 is movably arranged in the valve body 1. A convex neck 3 is integrally formed on the valve body 1. An opening and closing groove 4 is provided on the side wall of the convex neck 3. A valve stem 5 that is engaged with the ball 2 is movably arranged in the convex neck 3.

[0080] Furthermore, as a preferred embodiment, an opening and closing assembly is further provided in the convex neck 3. The opening and closing assembly includes: a swivel base 6 and a handle 7. The swivel base 6 is rotatably arranged in the convex neck 3. The swivel base 6 is connected to the upper end of the valve stem 5. One end of the handle 7 penetrates through the opening and closing groove 4 and extends into the swivel base 6. The handle 7 drives the swivel base 6 to rotate, thereby driving the valve stem 5 and the ball 2 to rotate, realizing the opening and closing of the lock-controlled ball valve.

[0081] The convex neck 3 of the present invention is integrally formed with the valve body 1, and the swivel base 6 is installed in the convex neck 3. The stability of the handle 7 rotating the swivel base 6 to realize the opening and closing of the ball valve is higher.

[0082] Furthermore, as a preferred embodiment, a first hole 11 and a second hole 12 that communicate with each other are provided along the radial direction in the swivel base 6. The first hole 11 and the second hole 12 are coaxially arranged. The diameter of the first hole 11 is larger than the diameter of the second hole 12. A first step 15 is formed between the first hole 11 and the second hole 12.

[0083] Furthermore, as a preferred embodiment, a third hole 13 and a fourth hole 14 that communicate with each other are further provided along the radial direction on the side wall of the convex neck 3. The third hole 13 and the fourth hole 14 are coaxially arranged. The diameter of the third hole 13 is smaller than the diameter of the fourth hole 14. The diameter of the fourth hole 14 is equal to the diameter of the first hole 11. A second step 16 is formed between the third hole 13 and the fourth hole 14.

[0084] Furthermore, as a preferred embodiment, one end of the handle 7 sequentially penetrates through the opening and closing groove 4 and the second hole 12.

[0085] Furthermore, as a preferred embodiment, the swivel base 6 can be operably in a first position and a second position;

[0086] When the swivel base 6 is in the first position, the handle 7 is arranged in a first direction. The fourth hole 14 is coaxially arranged with the first hole 11. The end of one end of the handle 7 is limited between the first step 15 and the second step 16;

[0087] When the swivel base 6 is in the second position, the handle 7 is arranged in a second direction. The central axis of the fourth hole 11 is perpendicular to the central axis of the first hole 11.

[0088] Furthermore, as a preferred embodiment, the first direction is perpendicular to the second direction.

[0089] Further, as a preferred embodiment, the lock control ball valve further includes: a limit screw 8, which is fixedly connected to one end of the handle 7, the limit screw 8 is movably arranged in the first hole 11 or the fourth hole 14, and the handle 7 can be movably arranged along the axial direction of the second hole 12;

[0090] When the swivel base 6 is in the first position, the limit screw 8 extends into the fourth hole 14. At this time, since the limit screw 8 is limited in the fourth hole 14, the handle 7 cannot rotate;

[0091] When the swivel base is in the second position, the limit screw is located in the first hole.

[0092] Further, as a preferred embodiment, a fixing hole 9 is provided at one end of the handle 7, anaerobic glue is applied in the fixing hole 9, the limit screw 8 is fixedly connected to the fixing hole 9, and the anaerobic glue fixes the limit screw 8 and the handle 7.

[0093] Preferably, anaerobic glue is provided on the basis of the threaded connection between the handle 7 and the limit screw 8 to increase the fastening effect and the anti-destruction effect.

[0094] Further, as a preferred embodiment, the handle 7 is in limit fit with both sides of the opening and closing groove 4;

[0095] When the swivel base 6 is in the first position, the handle 7 is in limit fit with one side of the opening and closing groove 4;

[0096] When the swivel base 6 is in the second position, the handle 7 is in limit fit with the other side of the opening and closing groove 4.

[0097] Further, as a preferred embodiment, both the upper and lower surfaces of the opening and closing groove 4 are flat surfaces, and both side surfaces of the opening and closing groove 4 are arc surfaces, and the radian of the arc surface is the same as the radian of both sides of the handle 7. Preferably, the stability of the movement of the handle 7 is improved.

[0098] Further, as a preferred embodiment, the limit screw 8 includes a connecting portion 17 and a limiting portion 18 which are connected to each other. The limiting portion 18 is cylindrical, the diameter of the limiting portion 18 is equal to the diameter of the fourth hole 14, and the connecting portion 17 is fixedly connected to one end of the handle 7;

[0099] When the swivel base 6 is in the first position, the limiting portion 18 is located in the fourth hole 14;

[0100] When the swivel base 6 is in the second position, the limiting portion 18 is located in the first hole 11.

[0101] Preferably, the shape of the limiting portion 18 is adapted to the shapes of the fourth hole 14 and the first hole 11 to improve the stability during movement.

[0102] The above are only preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention accordingly.

[0103] The present invention further has the following embodiments on the above basis:

[0104] In a further embodiment of the present invention, please continue to refer to Figures 1 to 6 As shown, three annular grooves 10 are provided on the handle 7 along its length direction, and two first mounting holes 21 are provided in the swivel base 6, and magnet control components 19 are provided in both of the two first mounting holes 21;

[0105] When the swivel base 6 is in the first position, the two magnet control components 19 are respectively in axial limit fit with the two annular grooves 10 located on both sides along the handle 7;

[0106] When the swivel base 6 is in the second position, one magnet control component 19 is in axial limit fit with the middle annular groove 10 along the handle 7, and the other magnet control component 19 abuts against the side wall of the handle 7.

[0107] Preferably, the distance between the two annular grooves 10 on both sides is equal to the distance between the two magnet control components 19.

[0108] In a further embodiment of the present invention, each magnet control component 19 includes: a first elastic member 22 and a strong magnet 23, and the first elastic member 22 abuts between the bottom of the first mounting hole 21 and the strong magnet 23.

[0109] In a further embodiment of the present invention, the lock control ball valve further includes: a key 25, two second mounting holes 24 are provided on the swivel base 6, the two first mounting holes 21 are respectively opposite to the two second mounting holes 24, two magnets 26 are provided on the key 25, the two magnets 26 are respectively placed in the two second mounting holes 24, and the two magnets 26 are respectively in adsorption fit with the two strong magnets 23.

[0110] In a further embodiment of the present invention, the two strong magnets 23 are arranged with opposite magnetic polarities.

[0111] In a further embodiment of the present invention, the diameters of the two second mounting holes 24 are different. Preferably, it plays an anti-mistake role, is convenient for using unlocking tools, and also has an anti-unlocking function.

[0112] In a further embodiment of the present invention, the swivel base 6 and the convex neck 3 are fixedly connected by a retaining ring 20.

[0113] In a further embodiment of the present invention, a first annular groove 27 is provided on the outer periphery of the swivel base 6, a second annular groove 28 is provided on the inner periphery of the convex neck 3, and the retaining ring 20 is arranged in the first annular groove 27 and the second annular groove 28.

[0114] In a further embodiment of the present invention, a first convex ring 31 is provided in the third hole 13.

[0115] In a further embodiment of the present invention, a locking assembly 29 is provided in the third hole 13. The locking assembly 29 includes a locking rod 33 and a second elastic member 34. The locking rod 33 is movably disposed in the third hole 13. A second convex ring 32 is provided on the outer periphery of the locking rod 33. The second elastic member 34 is sleeved on the locking rod 33. One end of the second elastic member 34 abuts against the second convex ring 32, and the other end of the second elastic member 34 abuts against the end of the third hole 13 away from the fourth hole 14.

[0116] In a further embodiment of the present invention, the locking assembly 29 further includes a locking cover 35. The locking cover 35 covers the third hole 13, and the other end of the second elastic member 34 abuts against the locking cover 35.

[0117] In a further embodiment of the present invention, the side wall of the swivel base 6 has a locking hole 36. When the swivel base 6 is in the second position, the end of the locking rod 33 is in locking cooperation with the locking hole 36.

[0118] Preferably, the central axis of the locking hole 36 is perpendicular to the central axis of the first hole 11.

[0119] In a further embodiment of the present invention, the second convex ring 32 is limited between the first convex ring 31 and the locking cover 35.

[0120] In a further embodiment of the present invention, the locking cover 35 has internal threads, and the locking rod 33 has external threads. The internal threads are threadedly connected to the external threads.

[0121] When the locking cover 35 is threadedly connected to the locking rod 33, the locking rod 33 is fixed. At this time, the second elastic member 34 is compressed by the second convex ring 32. At this time, the locking rod 33 is not locked with the locking hole 36. When the locking cover 35 is not threadedly connected to the locking rod 33, the locking rod 33 is movable. At this time, the second elastic member 34 abuts against the second convex ring 32 through its restoring force. The locking rod 33 can extend into the locking hole 36. When the locking rod 33 is in locking cooperation with the locking hole 36, the swivel base 6 can be locked.

[0122] In a further embodiment of the present invention, when the swivel base 6 is in the first position, the lock control ball valve is in the closed state, and the handle 7 is operably in the third position and the fourth position. When the handle 7 is in the third position, the limit screw 8 is located in the fourth hole 14. The limit screw 8 is in limit cooperation with the second step 16, and the limit screw 8 is in limit cooperation with the side wall of the fourth hole 14. And at this time, the magnetic control assembly 19 is in axial limit cooperation with the handle 7. When the handle 7 is in the fourth position, the limit screw 8 is located in the first hole 11. The limit screw 8 is in limit cooperation with the first step 15, and at this time, the opening and closing assembly is in a free state.

[0123] In a further embodiment of the present invention, when the swivel 6 is in the second position, the lock-controlled ball valve is in the open state, and the locking assembly 29 is in locking cooperation with the swivel 6. When the locking assembly 29 is in locking cooperation with the locking hole 36, the swivel 6 cannot rotate. When the locking assembly 29 is not in locking cooperation with the locking hole 36, the opening and closing assembly is in a free state.

[0124] The lock-controlled ball valve of the present invention has four states:

[0125] First, in the closed state of the lock-controlled ball valve, the handle 7 is in limit cooperation with the magnetically controlled assembly 19 along its axial direction, and the handle 7 is in limit cooperation with the side wall of the fourth hole 14 along its radial direction. The swivel 6 and the handle 7 are in a locked state;

[0126] Second, in the closed state of the lock-controlled ball valve, the handle 7 and the swivel 6 can rotate freely;

[0127] Third, in the open state of the lock-controlled ball valve, the locking rod 33 of the locking assembly 29 extends into the locking hole 36 of the swivel 6 and is in locking cooperation. The swivel 6 and the handle 7 are in a locked state;

[0128] Fourth, in the open state of the lock-controlled ball valve, when the locking assembly 29 is not in locking cooperation with the locking hole 36, the handle 7 and the swivel 6 can rotate freely.

[0129] In a further embodiment of the present invention, the convex neck 3 has a first accommodation space 37 and a second accommodation space 38 that communicate with each other up and down. The valve stem 5 is rotatably arranged in the second accommodation space 38, the swivel 6 is rotatably arranged in the first accommodation space 37, the bottom of the swivel 6 has two first convex blocks 39, the top of the valve stem 5 has a second convex block 40, the second convex block 40 is engaged with the two first convex blocks 39, and the outer walls of the two first convex blocks 39 are in rotational cooperation with the side wall of the second accommodation space 38.

[0130] In a further embodiment of the present invention, there is a third step 41 between the first accommodation space 37 and the second accommodation space 38, and the bottom of the swivel 6 is in limit cooperation with the third step 41.

[0131] In a further embodiment of the present invention, the convex neck 3 has a fourth step 42 on the peripheral wall of the second accommodation space 38, and the lower end of the valve stem 5 has a fourth convex ring 43, and the fourth convex ring 43 is in limit cooperation with the fourth step 42.

[0132] Preferably, the first accommodation space 37 is cylindrical, the main body of the swivel 6 is cylindrical, and the main body of the swivel 6 matches the first accommodation space 37.

[0133] In a further embodiment of the present invention, a display mark 44 is embedded on the top of the convex neck 3. Preferably, it is convenient to observe the valve state.

[0134] In a further embodiment of the present invention, the display mark 44 is located directly above the third hole 13 and the fourth hole 14.

[0135] In a further embodiment of the present invention, a third convex ring 45 is provided on the circumferential side of the top of the swivel base 6. The third convex ring 45 covers the top of the convex neck 3, and the third convex ring 45 covers the display mark 44.

[0136] The following describes an installation method of a lock-controlled ball valve according to the present invention, which is applied to the above-mentioned lock-controlled ball valve. The installation method includes:

[0137] Step S1: The limit screw 8 is placed in the first hole 11 of the swivel base.

[0138] Step S2: The swivel base 6 and the limit screw 8 are placed together in the convex neck 3, and the swivel base 6 is fixedly connected to the convex neck 3 through a retaining ring 20.

[0139] Step S3: One end of the handle 7 sequentially passes through the opening and closing groove 4 and the second hole 12.

[0140] Step S4: Fix the handle 7. After passing a screwdriver through the third hole 13 and the fourth hole 14 in sequence, rotate the limit screw 8 to fixedly connect the limit screw 8 to the handle 7.

[0141] Step S5: The lock rod 33 and the second elastic member 34 are inserted into the third hole 13.

[0142] Step S6: The lock cover 35 is installed on the convex neck 3, and the lock cover 35 limits the lock rod 33 and the second elastic member 34.

[0143] The opening and closing positioning of the ball valve of the present invention is composed of a 90-degree opening and closing groove on the convex neck and the handle, with high positioning accuracy. Moreover, the rotation of the handle is completely independent of the magnetic control component, and there will be no situation where the magnet in a conventional magnetic lockable ball valve will be subjected to varying degrees of shear force during the opening and closing process, resulting in the risk of magnet fracture and failure of the lock and anti-theft function.

[0144] The present invention has strong anti-destruction ability. When locked, if an external force is used to move the handle to forcibly unlock or damage the magnetic control component, the valve will not be damaged. Because the steel limit screw provided on the handle bears the external force of moving the handle, protecting the strong magnet from external damage. In addition, the swivel base is assembled with the convex neck through a retaining ring, preventing disassembly and having strong anti-destruction ability. In the case of external force damage to a common lock-controlled ball valve, such as forcibly unlocking the handle with an external force, the magnetic control component and the handle are subjected to the same-direction force, and the magnetic control component breaks first, resulting in valve damage.

[0145] The lock cover and the convex neck can also be fixed by a retaining ring. However, even if the lock cover and the lock rod are removed, it does not affect the use of the swivel base and the handle. And due to the use of anaerobic glue between the handle and the limit screw, the anti-disassembly between the limit screw and the handle is also achieved. Further, by integrally forming the convex neck and the valve body, the anti-destruction ability is further improved.

[0146] The above are only the preferred embodiments of the present invention, and thus do not limit the implementation manners and protection scope of the present invention. For those skilled in the art, it should be realized that all the equivalent substitutions and obvious changes made by using the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A lock-controlled ball valve, comprising: A valve body and a sphere, the sphere being movably disposed within the valve body, characterized in that a convex neck is integrally formed on the valve body, an opening and closing groove is provided on the side wall of the convex neck, a valve stem that is movably disposed within the convex neck and is engaged with the sphere is provided within the convex neck, and an opening and closing assembly is further provided within the convex neck; The opening and closing assembly includes: A swivel base, the swivel base being rotatably disposed within the convex neck, the swivel base being connected to the upper end of the valve stem; A handle, one end of the handle passing through the opening and closing groove and extending into the swivel base, the handle driving the swivel base to rotate, thereby driving the valve stem and the sphere to rotate, to effect the opening and closing of the lock control ball valve; Three annular grooves are provided on the handle along its length direction, two first mounting holes are provided within the swivel base, and magnetic control components are provided within both of the two first mounting holes; The swivel base can be operably in a first position and a second position; When the swivel base is in the first position, the lock control ball valve is in a closed state, and the handle is arranged in a first direction; When the swivel base is in the second position, the lock control ball valve is in an open state, and the handle is arranged in a second direction; The first direction is perpendicular to the second direction; When the swivel base is in the first position, the two magnetic control components are respectively in axial limit fit with the two annular grooves located on both sides along the axis of the handle; When the swivel base is in the second position, one magnetic control component is in axial limit fit with the annular groove located in the middle along the axis of the handle, and the other magnetic control component abuts against the side wall of the handle; Each magnetic control component includes: a first elastic member and a strong magnet, the first elastic member being abutted between the first mounting hole and the strong magnet; The lock control ball valve further includes: a key, two second mounting holes are provided on the swivel base, the two first mounting holes are respectively aligned with the two second mounting holes, two magnets are provided on the key, the two magnets are respectively placed within the two second mounting holes, and the two magnets are respectively in adsorption fit with the two strong magnets; The two strong magnets are arranged with opposite magnetic polarities; The diameters of the two second mounting holes are different.

2. The lock control ball valve according to claim 1, characterized in that, A first hole and a second hole that communicate with each other are provided within the swivel base along its radial direction, the first hole and the second hole are coaxially arranged, the diameter of the first hole is larger than the diameter of the second hole, and a first step is formed between the first hole and the second hole; A third hole and a fourth hole that communicate with each other are further provided on the side wall of the convex neck along its radial direction, the third hole and the fourth hole are coaxially arranged, the diameter of the third hole is smaller than the diameter of the fourth hole, the diameter of the fourth hole is equal to the diameter of the first hole, and a second step is formed between the third hole and the fourth hole; One end of the handle sequentially passes through the opening and closing groove and the second hole; When the swivel base is in the first position, the fourth hole is coaxially arranged with the first hole, and the end of one end of the handle is limited between the first step and the second step; When the swivel base is in the second position, the central axis of the fourth hole is perpendicular to the central axis of the first hole.

3. The lock control ball valve according to claim 2, wherein The lock control ball valve further includes: a limit screw, which is fixedly connected to one end of the handle, the limit screw is movably arranged in the first hole or the fourth hole, and the handle is axially movably arranged along the second hole; When the swivel base is in the first position, the limit screw extends into the fourth hole; When the swivel base is in the second position, the limit screw is located in the first hole; A fixing hole is provided at one end of the handle, anaerobic adhesive is applied in the fixing hole, the limit screw is fixedly connected to the fixing hole, and the anaerobic adhesive fixes the limit screw and the handle.

4. The lock control ball valve according to claim 3, characterized in that, The handle is in limit fit with both sides of the opening and closing groove; When the swivel base is in the first position, the handle is in limit fit with one side of the opening and closing groove; When the swivel base is in the second position, the handle is in limit fit with the other side of the opening and closing groove; Both the upper and lower surfaces of the opening and closing groove are flat, and both side surfaces of the opening and closing groove are arc-shaped, and the radian of the arc is the same as the radian on both sides of the handle.

5. The lock control ball valve according to claim 4, wherein, The limit screw includes a connecting portion and a limiting portion connected to each other. The limiting portion is cylindrical, the diameter of the limiting portion is equal to the diameter of the fourth hole, and the connecting portion is fixedly connected to one end of the handle; When the swivel base is in the first position, the limiting portion is located in the fourth hole; When the swivel base is in the second position, the limiting portion is located in the first hole.

6. The lock control ball valve according to claim 5, characterized in that The swivel base and the convex neck are fixedly connected by a retaining ring; A first annular groove is provided on the outer periphery of the swivel base, a second annular groove is provided on the inner periphery of the convex neck, and the retaining ring is arranged in the first annular groove and the second annular groove; A first convex ring is provided in the third hole; A locking assembly is provided in the third hole. The locking assembly includes: a locking rod and a second elastic member. The locking rod is movably arranged in the third hole. A second convex ring is provided on the outer periphery of the locking rod. The second elastic member is sleeved on the locking rod. One end of the second elastic member abuts against the second convex ring, and the other end of the second elastic member abuts against the end of the third hole away from the fourth hole; The locking assembly further includes: a lock cover, which covers the third hole, and the other end of the second elastic member abuts against the lock cover; A lock hole is provided on the side wall of the swivel base. When the swivel base is in the second position, the end of the locking rod is in locking fit with the lock hole; The second convex ring is limited between the first convex ring and the lock cover; Internal threads are provided in the lock cover, external threads are provided on the locking rod, and the internal threads are threadedly connected to the external threads; When the swivel is in the first position, the lock control ball valve is in the closed state, and the handle is operably in the third position and the fourth position. When the handle is in the third position, the limit screw is located in the fourth hole, the limit screw is in limit cooperation with the second step, the limit screw is in limit cooperation with the side wall of the fourth hole, and at this time, the magnetic control assembly is in axial limit cooperation with the handle; when the handle is in the fourth position, the limit screw is located in the first hole, the limit screw is in limit cooperation with the first step, and at this time, the opening and closing assembly is in a free state; When the swivel is in the second position, the lock control ball valve is in the open state, and the locking assembly is in locking cooperation with the swivel. When the locking assembly is in locking cooperation with the locking hole, the swivel cannot rotate. When the locking assembly is not in locking cooperation with the locking hole, the opening and closing assembly is in a free state.

7. The lock control ball valve according to claim 6, wherein, The convex neck has a first accommodation space and a second accommodation space that communicate with each other up and down. The valve stem is rotatably arranged in the second accommodation space, the swivel is rotatably arranged in the first accommodation space. The bottom of the swivel has two first bumps, and the top of the valve stem has a second bump. The second bump is fitted with the two first bumps, and the outer walls of the two first bumps are in rotational cooperation with the side wall of the second accommodation space; There is a third step between the first accommodation space and the second accommodation space, and the bottom of the swivel is in limit cooperation with the third step; The convex neck has a fourth step on the circumferential wall of the second accommodation space, and the valve stem has a fourth convex ring on the circumferential side of the lower end. The fourth convex ring is in limit cooperation with the fourth step.

8. The lock control ball valve according to claim 7, wherein, A display mark is embedded on the top of the convex neck; The display mark is located directly above the third hole and the fourth hole; A third convex ring is provided on the circumferential side of the top of the swivel, and the third convex ring covers the top of the convex neck, and the third convex ring covers the display mark.

9. An installation method of a lock-controlled ball valve, characterized in that, Applied to the lock control ball valve according to any one of claims 6-8, the installation method includes: Step S1: Place the limit screw in the first hole of the swivel; Step S2: Place the swivel and the limit screw together in the convex neck, and the swivel is fixedly connected to the convex neck through the retaining ring; Step S3: One end of the handle sequentially passes through the opening and closing groove and the second hole; Step S4: Fix the handle. After passing a screwdriver through the third hole and the fourth hole in sequence, rotate the limit screw to fixedly connect the limit screw to the handle; Step S5: Install the lock rod and the second elastic member into the third hole; Step S6: Install the lock cover on the convex neck, and the lock cover limits the lock rod and the second elastic member.

Images