A magnetically controlled gas valve

Abstract

The utility model provides a kind of magnetically controlled gas valve, including valve body, valve body is rotatably connected with valve core, valve core is connected with valve rod, further include handle, handle is slidably set on valve rod and forms a locking position and an adjustment position, handle is slidably connected with a locking piece, locking groove is set on valve rod for the free sliding of locking piece, when handle is located in locking position, locking piece can slide into the locking groove at this time, realize the locking of valve rod. The device is easy to operate, simple structure, when handle is located in adjustment position, valve can be opened and closed freely and flow is adjusted, press handle downward, only handle can be in locking position, more in line with accidental touch, temporary closing valve, opening and closing valve for debugging multiple times in a short time and other use conditions.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a magnetically controlled gas valve. Background Technology

[0002] Gas valves are the core equipment connecting gas pipelines and stoves. They ensure gas safety by regulating gas flow and can be divided into manual valves and automatic valves based on their control method. To strengthen the safe use and management of urban gas pipeline users and to fairly and reasonably allocate and transport urban gas and other resources, gas companies will take certain measures to prevent users from failing to register, incurring arrears, delaying payments, or encountering malfunctions. For example, gas safety inspectors will come to the user's home to close the gas inlet valve. Only after the user has registered and been authorized by the gas company, and after all fees have been paid in full or the malfunction has been resolved, will gas safety inspectors return to open the valve with specialized tools.

[0003] Patent CN 202371200 U discloses a magnetically controlled locking ball valve, including a valve body, a ball core disposed within the valve body, a valve stem fixedly connected to the upper part of the ball core, a rotating handle connected to the upper end of the valve stem, and a magnetic key assembly movably connected to the rotating handle. A magnetic pin and a recessed hole for receiving the magnetic pin are provided in the protrusion at the upper end of the valve body. An arc-shaped groove is provided on the protrusion at the upper end of the valve body. A positioning pin that is perpendicularly in contact with the arc-shaped groove is provided in the lower end face of the rotating handle. After the rotating handle of the magnetic key assembly engages with the two lugs on both sides of the rotating handle and rotates, the strong magnetic pin in the magnetic key assembly corresponds to the same pole of the magnetic ball in the protrusion at the upper end of the valve body.

[0004] However, the device still has the following problems: each time the valve is closed, it will cause the valve to lock itself. When it needs to be temporarily closed or is accidentally closed, a special tool is required to unlock it, which is time-consuming and laborious. Utility Model Content

[0005] In order to solve the problems existing in the prior art, a magnetically controlled gas valve is provided to address the problems mentioned in the above technical background.

[0006] The technical solution adopted by this utility model to solve its technical problem is: This utility model proposes a magnetically controlled gas valve, including a valve body, a valve core rotatably connected inside the valve body, a valve stem connected to the valve core, and a handle. The handle is slidably sleeved on the valve stem, forming a locking position and an adjusting position. A locking element is slidably connected inside the handle, and a locking groove is provided on the valve stem for the locking element to slide freely into. When the handle is in the locking position, the locking element can slide into the locking groove to lock the valve stem.

[0007] Preferably, the handle contains two magnets that are arranged at 180 degrees and can attract each other. When the handle is in the locked position, the two magnets can attract each other and slide into the locking groove.

[0008] Preferably, it also includes a lock-picking tool, the inside of which has a groove adapted to the shape of the handle, and a strong magnet is placed inside the lock-picking tool to attract the magnet to slide out of the locking groove.

[0009] Preferably, the valve stem is threaded with a bolt at its end, the bolt head having a diameter larger than that of the valve stem, and the lower end of the handle having a diameter equal to that of the valve stem. The bolt prevents the lower end of the handle from sliding off the valve stem.

[0010] Preferably, the upper end of the handle has a cavity that can accommodate the bolt head, and the upper end of the cavity is threaded with a cap, which is connected to the bolt head by a compression spring.

[0011] Preferably, a wedge-shaped block is fixed in the locking groove, and a slot adapted to the wedge-shaped block is provided on the magnet.

[0012] Preferably, the distance between the bottom of the locking groove and the bottom of the wedge block is greater than the height of the magnet.

[0013] Preferably, a slip ring is fitted on the valve stem, and when the handle is in the adjustment position, the magnet abuts against the slip ring.

[0014] Preferably, the handle has at least one groove, and the valve body has a protrusion that matches the groove. When the handle is in the locked position, the protrusion is located in the groove.

[0015] Preferably, a protruding rod is fixed on the valve body to limit the rotation angle of the handle.

[0016] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model is equipped with a handle. When the handle is in the locked position, the magnet can slide into the locking groove on the valve stem under the action of magnetic force, thereby locking the valve stem and closing the valve. When the handle is in the adjusting position, the handle can drive the valve stem to rotate, so as to adjust the valve flow. Moreover, the handle can only be locked when the valve is completely closed and the handle is pressed down, which greatly reduces the occurrence of complete valve locking due to accidental contact or temporary valve closure.

[0017] 2. The valve stem of this utility model is fitted with a slip ring. When the handle is switched between the adjustment position and the locking position, the magnet needs to slide up and down. The roughness of the slip ring is small, which can effectively reduce the wear caused by the up and down sliding of the magnet and help extend the service life of the entire valve.

[0018] 3. The magnet of this utility model has a slot, and a wedge block is fixed in the locking slot. When the handle is pressed down and the handle is in the locked position, the magnet slides into the locking slot to lock the valve stem. When the handle is released, the handle and the magnet slide upward under the action of the spring force. At this time, the wedge block slides into the slot, so that the magnet can no longer slide freely. This can effectively reduce the situation where the magnet is dislodged from the locking slot due to vibration or human attraction of the magnet, and further improve the safety of the valve after it is locked. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a front view of the valve body and unlocking tool of this utility model; Figure 2 This is a cross-sectional view of the valve body of this utility model (Example 1); Figure 3 This is a cross-sectional view of the fit between the handle and the valve stem of this utility model; Figure 4 This is a cross-sectional view of the valve body of this utility model (Embodiment 2); Figure 5 This is the first working state of the valve body of this utility model (Example 3); Figure 6 This is the second working state of the valve body of this utility model (Example 3); Figure 7 This is the third working state of the valve body of this utility model (Example 3).

[0020] Explanation of reference numerals in the attached figures: 1. Valve body; 2. Valve core; 3. Valve stem; 4. Handle; 5. Locking groove; 6. Magnet; 7. Bolt; 8. Sealing cap; 9. Compression spring; 10. Unlocking tool; 11. Strong magnet; 12. Wedge block; 13. Slot; 14. Slip ring; 15. Protrusion; 16. Sealing ring; 17. Valve cover; 18. Sealing gasket. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. Example 1:

[0022] refer to Figures 1-3This embodiment proposes a magnetically controlled gas valve, including a valve body 1, a valve core 2 rotatably connected inside the valve body 1, a sealing gasket 18 placed between the valve core 2 and the valve body 1, a valve stem 3 connected to the valve core 2, the lower end of the valve stem 3 being fixedly connected to the valve core 2 by threads, and a plurality of sealing rings 16 being sleeved on the valve stem 3. The sealing rings 16 and the sealing gasket 18 together play a sealing role for the valve.

[0023] A valve cover 17 is threadedly connected to one side of the valve body 1 for installing the valve core 2 and the sealing gasket, and also for easy replacement and maintenance.

[0024] It also includes a handle 4, which is slidably sleeved on the valve stem 3, forming a locking position and an adjusting position. A locking element is slidably connected inside the handle 4. The valve stem 3 has a locking groove 5 for the locking element to slide freely into. When the handle 4 is in the adjusting position, the handle 4 can drive the valve stem 3 to rotate freely, and the valve stem 3 drives the valve core 2 to rotate, thereby realizing the adjustment of the flow rate in the valve body 1. When the handle 4 is in the locking position, the locking element can slide into the locking groove 5 to lock the valve stem 3.

[0025] The handle 4 has at least one groove, and the valve body 1 has a protrusion 15 that matches the groove. When the handle 4 is in the locked position, the protrusion 15 is located in the groove.

[0026] Specifically, when the handle 4 is in the adjustment position, the protrusion 15 is not in contact with the groove, nor is the protrusion 15 located in the groove. When the handle 4 is pressed and slid to the locking position, the protrusion 15 slides into the groove during this process, locking the rotation of the handle 4. Therefore, the handle 4 can no longer drive the valve stem 3 to rotate.

[0027] Specifically, when the handle 4 drives the valve stem 3 and valve core 2 to close the valve, the protrusion 15 and the groove are on the same axis. When the valve is not closed, pressing the handle 4 down will prevent the protrusion 15 and the groove from corresponding, so the handle 4 will not slide to the locking position. This means the valve can only be locked after it is fully closed. If the valve stem 3 is locked before the valve is fully closed, the valve may not be able to close in time, causing a safety hazard.

[0028] A protruding rod is fixed on the valve body 1 to limit the rotation angle of the handle 4.

[0029] Specifically, there is a protruding limiting rod on the handle 4, and two protruding rods on the valve body 1 by welding, threading or casting. The two protruding rods are distributed at 90 degrees in the circumferential direction of the valve stem 3. The limiting rod is located between the two protruding rods. When the valve stem 3 is rotated, since the limiting rod can only move between the two protruding rods, the valve stem 3 can rotate within 90 degrees to complete the opening and closing of the valve.

[0030] Two magnets 6 are placed inside the handle 4. The two magnets 6 are distributed at 180 degrees inside the handle 4 and can attract each other. When the handle 4 is in the locked position, the two magnets 6 can attract each other and slide into the locking groove 5.

[0031] Specifically, when the handle 4 is in the adjustment position, the two magnets 6 are above the locking groove 5, and the handle 4 can drive the valve stem 3 to rotate freely. When the handle 4 is pressed down, the handle 4 drives the magnets 6 to slide down. After the handle 4 reaches the bottom, the magnets 6 and the locking groove 5 are at the same height. The magnets on both sides of the handle 4 attract each other and slide into the locking groove 5 at the same time, thus completing the locking between the handle 4 and the valve stem 3.

[0032] It also includes a lock-picking tool 10, which has a groove inside that matches the shape of the handle 4, and a strong magnet 11 inside the lock-picking tool 10 that can attract the magnet 6 to slide out of the locking groove 5.

[0033] Furthermore, the magnetic force of the strong magnet 11 is greater than the attractive force between the two magnets 6.

[0034] Specifically, when the handle 4 is in the locked position, after the unlocking tool 10 is attached to the handle 4, the strong magnet 11 and the magnet 6 are at the same height. At this time, the strong magnet 11 can drive the magnet 6 to move away from the locking groove 5, and then slide out from the locking groove 5 to complete the unlocking between the valve stem 3 and the handle 4. At the same time, the handle 4 moves upward and slides to the adjustment position, which facilitates the subsequent adjustment of the valve.

[0035] The end of the valve stem 3 is threaded with a bolt 7. The diameter of the head of the bolt 7 is larger than the diameter of the valve stem 3. The diameter of the lower end of the handle 4 is the same as the diameter of the valve stem 3. The bolt 7 can prevent the lower end of the handle 4 from sliding off the valve stem 3.

[0036] The upper end of the handle 4 has a cavity that can accommodate the head of the bolt 7. The upper end of the cavity is threaded with a cap 8, and the cap 8 is connected to the head of the bolt 7 through a compression spring 9.

[0037] Specifically, the spring force of the compression spring 9 can drive the handle 4 to slide upward or keep the handle 4 in the adjustment position, effectively preventing the valve from being locked due to the weight of the handle 4 itself sliding to the locking position. Example 2:

[0038] refer to Figure 4 As shown, the other structures are the same as in Embodiment 1. The difference is that this embodiment takes into account the problem of frequent friction between the magnet and the valve stem when the handle switches between the adjustment position and the locking position.

[0039] A slip ring 14 is fitted on the valve stem 3. When the handle 4 is in the adjustment position, the magnet 6 abuts against the slip ring 14.

[0040] Specifically, the slip ring 14 is made of plastic material with low roughness. At the same time, the wear resistance of the slip ring 14 is less than that of the magnet 6. It is fixed to the valve stem 3 by snap-fit ​​or adhesive. When the magnet 6 slides up and down, the magnet 6 is always in contact with the slip ring 14. The material of the slip ring 14 wears first, which protects the magnet 6 from wear and improves the service life of the entire valve. Example 3:

[0041] refer to Figures 5-7 As shown, the other structures are the same as in Embodiment 1 or 2. The difference is that this embodiment takes into account the problem of the magnet sliding out of the locking groove due to vibration or human factors.

[0042] A wedge block 12 is fixed inside the locking groove 5, and a slot 13 adapted to the wedge block 12 is opened on the magnet 6.

[0043] The distance between the bottom of the locking groove 5 and the bottom of the wedge block 12 is greater than the height of the magnet 6.

[0044] Specifically, during the downward pressing of the handle 4, the spring 9 is compressed. When the handle 4 reaches the bottom and is in the locked position, the two magnets 6 inside the handle 4 attract each other. Since the distance between the bottom of the locking groove 5 and the bottom of the wedge block 12 is greater than the height of the magnet 6, under the action of magnetic force, the two magnets 6 slide into the locking groove 5 and slide into the locking groove 5. At this time, the handle 4 can no longer slide in the axial direction of the valve stem 3. When the handle 4 is released, the spring 9 can push the handle 4 upward, and then the wedge block 12 slides into the slot 13 on the magnet 6, completing the horizontal locking of the magnet 6, further improving the safety of valve locking.

[0045] Specific working process: S1: During normal use, the spring 9 drives the handle 4 to remain in the adjustment position, which means that the handle 4 is located in the upper part of the valve stem 3. At this time, the magnet 6 and the locking groove are not on the same plane. The handle 4 can drive the valve stem 3 and the valve core 2 to rotate freely, which can enable the valve to open and close freely and regulate the flow of the valve. S2: When it is necessary to repair the valve, suspend the use of the valve, or prevent theft of the valve, turn the handle to completely close the valve, then press the handle 4 down to make the handle 4 slide down along the valve stem 3. The magnet 6 gradually slides down and is at the same height as the locking groove 5. The two magnets 6 attract each other and slide into the locking groove at the same time to complete the locking of the handle 4 and the valve stem 3 in the axial direction. At the same time, the protrusion 15 slides into the groove on the handle 4 to complete the locking of the handle 4 in the circumferential direction. S3: Release handle 4. Under the action of spring 9, handle 4 slides upward. At this time, wedge block 12 in locking groove 5 will slide into slot 13 on magnet 6 until the upper surface of magnet 6 abuts against the downward surface of locking groove 5, thus completing the horizontal locking of magnet 6. S4: When repairing, replacing or reusing the valve, take out the unlocking tool 10, attach the unlocking tool 10 to the handle 4, press the handle 4 down to make the wedge block 12 slide out of the slot 13, and then the strong magnet 11 in the unlocking tool 10 will attract the two magnets 6 out of the locking groove 5, completing the unlocking of the handle 4 and the valve stem 3 in the axial direction. At the same time, under the action of the compression spring 9, the handle 4 and the unlocking tool 10 will slide upward, and the protrusion 15 will slide out of the groove on the handle 4, so that the handle 4 is in the adjustment position, which can drive the valve stem 3 to rotate freely.

[0046] Compared to existing technologies where the valve stem locks itself every time it rotates to the closed position, requiring a locking tool to unlock, this valve allows for free adjustment of its opening, closing, and flow rate when in the regulating position. Therefore, it is more suitable for everyday use, such as accidental activation, temporary valve closure, and repeated opening and closing for testing within a short period. Furthermore, locking the valve is simple: just press the handle down once while the valve is closed. This operation is extremely easy, has a very low learning curve, and greatly reduces the occurrence of misoperation.

[0047] Meanwhile, compared to the existing technology where the valve is opened by magnetic attraction, this method can also limit the internal magnet after the valve is locked. After the valve is locked, it needs to be pressed again to unlock it. This method greatly improves the anti-theft level of the valve.

[0048] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A magnetically controlled gas valve, comprising a valve body (1), wherein a valve core (2) is rotatably connected inside the valve body (1), and a valve stem (3) is connected to the valve core (2), characterized in that, It also includes a handle (4), which is slidably sleeved on the valve stem (3) and forms a locking position and an adjusting position. A locking element is slidably connected inside the handle (4), and a locking groove (5) is provided on the valve stem (3) for the locking element to slide freely into. When the handle (4) is in the locking position, the locking element can slide into the locking groove (5) to lock the valve stem (3).

2. A magnetically controlled gas valve according to claim 1, characterized in that, Two magnets (6) are placed inside the handle (4). The two magnets (6) are distributed at 180 degrees inside the handle (4) and can attract each other. When the handle (4) is in the locked position, the two magnets (6) can attract each other and slide into the locking groove (5).

3. A magnetically controlled gas valve according to claim 2, characterized in that, It also includes a lock-picking tool (10), which has a groove inside that matches the shape of the handle (4), and a strong magnet (11) inside the lock-picking tool (10) that can attract the magnet (6) to slide out of the locking groove (5).

4. A magnetically controlled gas valve according to claim 2, characterized in that, The valve stem (3) is threaded with a bolt (7) at its end. The diameter of the head of the bolt (7) is greater than the diameter of the valve stem (3). The diameter of the lower end of the handle (4) is the same as the diameter of the valve stem (3). The bolt (7) can restrict the lower end of the handle (4) from sliding off the valve stem (3).

5. A magnetically controlled gas valve according to claim 4, characterized in that, The upper end of the handle (4) is provided with a cavity that can accommodate the head of the bolt (7). The upper end of the cavity is threaded with a cap (8), and the cap (8) is connected to the head of the bolt (7) by a compression spring (9).

6. A magnetically controlled gas valve according to claim 5, characterized in that, A wedge block (12) is fixed inside the locking groove (5), and a slot (13) adapted to the wedge block (12) is provided on the magnet (6).

7. A magnetically controlled gas valve according to claim 6, characterized in that, The distance between the bottom of the locking groove (5) and the bottom of the wedge block (12) is greater than the height of the magnet (6).

8. A magnetically controlled gas valve according to claim 2, characterized in that, A slip ring (14) is fitted on the valve stem (3). When the handle (4) is in the adjustment position, the magnet (6) abuts against the slip ring (14).

9. A magnetically controlled gas valve according to claim 1, characterized in that, At least one groove is provided on the handle (4), and a protrusion (15) adapted to the groove is fixed on the valve body (1). When the handle (4) is in the locked position, the protrusion (15) is located in the groove.

10. A magnetically controlled gas valve according to claim 1, characterized in that, A protruding rod is fixed on the valve body (1) to limit the rotation angle of the handle (4).

Images