Locking valve

Abstract

The utility model discloses a locking valve, which relates to the technical field of valves, and comprises a valve body, the valve body is provided with a valve cover, the valve cover is provided with an inserting groove, a valve switch is provided with a sliding groove, a first magnet is arranged in the sliding groove, the valve cover is connected with the valve switch, the valve switch is connected with a key, and a second magnet is arranged at the bottom of the key. The adjacent surfaces of the first magnet and the second magnet are opposite in magnetism; by arranging the first magnet, the self-locking function of the valve is achieved, the key and the valve are arranged separately, the valve cannot be opened without the key, operation of irrelevant personnel is effectively eradicated, and safety is improved.

Description

Technical Field

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

[0002] When the ball valve in the prior art is used in a gas pipeline, the handle on the ball valve can be operated at will by anyone, especially when the ball valve is set as the main valve of the gas pipeline. The existing ball valve of this type can be easily opened accidentally without paying attention, thereby causing gas leakage and posing a threat to personal safety.

[0003] As in Chinese patent CN220102142U, published on November 28, 2023, this utility model relates to a fireproof gas ball valve, including sealing rings made of metal arranged on the upper and lower sides of the valve ball, the side of the sealing ring that fits the valve ball has an arc surface that matches the arc of the valve ball, a sealing ring is arranged on the arc surface, a guide column is arranged on the sealing ring, an annular groove for installing the sealing ring is arranged in the valve cavity of the valve body, a spring hole is arranged on the annular groove, a guide hole for inserting the guide column is arranged at the bottom of the spring hole, and a compression spring is sleeved on the guide column. By setting a sealing ring made of metal material, a sealing ring that matches the valve ball seal is arranged on the sealing ring, and the sealing ring is connected to the valve body through a spring; this patent can be operated by anyone, and accidents are prone to occur. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing gas valve can be operated by anyone, which poses a great safety hazard. A locking valve is proposed, which cannot be operated without a key to improve the safety level. To solve the above technical problems, the technical solution adopted by the utility model is: a locking valve, including a valve body, the valve body is provided with a valve cover, the valve cover is provided with a slot, the valve switch is provided with a slide groove, the slide groove is provided with a first magnet, the valve cover is connected to the valve switch, the valve switch is connected to the key, the bottom of the key is provided with a second magnet, and the magnetism of the adjacent surfaces of the first magnet and the second magnet are opposite.

[0005] A locking valve locks the valve switch and the valve cover by means of a first magnet and a slot, so that the valve switch cannot rotate. A detachable key is provided on the valve switch. When the key is detached, the valve cannot be opened. Only when the key is put on and aligned with the position, the second magnet sucks the first magnet upwards, so that the first magnet falls off the slot of the valve cover, and the valve switch can be moved. When the valve is closed, the key can be removed to lock the valve switch, effectively preventing people other than staff from operating the valve.

[0006] Preferably, the length of the first magnet is greater than the depth of the slot, the first magnet is at least partially located in the slide groove, and the depth of the slide groove is greater than the length of the first magnet. When the valve switch is in the closed position, the slot and the slide groove are in the same straight line, and the first magnet can move in the channel formed by the slot and the slide groove.

[0007] Preferably, lugs are provided at two ends of the key which are in the same parallel line with the valve switch rotating part, and the slide slot is located within the lugs. The second magnet on the key is located inside the lugs.

[0008] Preferably, a sealing ball fixedly mounted via a valve seat is provided in the valve body, and whether the gas passes through is controlled by rotating the sealing ball.

[0009] Preferably, a locking groove is provided on the top of the sealing ball, and the locking groove is connected to a latch pin, which can drive the sealing ball to rotate.

[0010] Preferably, a threaded hole is provided on the top of the latch pin, and a rotating screw is fixed in the threaded hole, and the rotating screw is used for connecting the latch pin with the valve switch.

[0011] Preferably, a rotation groove is provided on the top of the sealing ball, and a fixing block matching the rotation groove is provided on the inner side of the valve switch. The valve switch and the rotating screw are connected by a mortise and tenon structure.

[0012] Preferably, a sealing ring is provided on the connection side between the latch and the valve cover to prevent gas from leaking out during ventilation.

[0013] The substantial effect of the utility model is as follows: the utility model realizes the self-locking function of the valve by arranging the first magnet; and the valve cannot be opened without the key by arranging the key and the valve separately, thereby effectively preventing the operation by irrelevant personnel and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view of the first embodiment;

[0015] Figure 2 is a top view of the first embodiment;

[0016] Figure 3 is a cross-sectional view of embodiment 1;

[0017] Figure 4 This is an exploded view of the second embodiment.

[0018] Among them: 1. valve body, 2. valve switch, 3. key, 4. valve cover, 5. first magnet, 6. sealing ball, 7. valve seat, 8. latch, 9. rotating screw, 10. sealing ring, 11. second magnet. DETAILED DESCRIPTION

[0019] The specific implementation of the utility model is further described below through specific embodiments and in conjunction with the accompanying drawings.

[0020] Embodiment one:

[0021] A locking valve, such as Figure 1 , Figure 2 and Figure 3 As shown, the valve is mainly composed of two parts: a valve body 1 and a valve switch 2. The valve body 1 is mainly divided into a main ventilation part and a valve cover 4 part. The main ventilation part and the valve cover 4 are perpendicular to each other, and the main ventilation part and the valve cover 4 are integrally cast. The main ventilation part is also provided with an external interface, which can be set to be integrated with the main ventilation part, or the external interface can be set separately from the main ventilation part. If the external interface is separated from the main ventilation part, the connection of the main ventilation part is externally provided with an internal thread, and the part connected to the external interface is provided with an external thread. The connection between the two internal threads and the external thread is realized by connecting the external interface with the main ventilation part. If the external interface is set separately from the main ventilation part, the external interface can be replaced, and the connection of the valve to gas pipelines of different diameters can be realized by changing the diameter of the external interface.

[0022] A sealing ball 6 which is generally circular is also arranged in the ventilation part of the main body of the gas pipeline, and the sealing ball 6 is fixed by a valve seat 7. The valve seat 7 is an annular fixing part, and an opening slightly smaller than the diameter of the ventilation pipeline is provided in the middle for the gas to pass through. A circular arc segment with the same arc as the sealing ball 6 is provided at the position where the valve seat 7 and the sealing ball 6 are in contact, so that the sealing ball 6 can rotate in the cavity formed between the two valve bodies 1. A circle of inwardly protruding limiting rings is provided near the valve body 1 in the ventilation part of the main body of the gas valve, and the valve seat 7 is stuck between the limiting ring and the sealing ball 6, so as to achieve the positioning function. A transversely penetrating channel is provided in the middle of the sealing ball 6, and the diameter of the channel is the same as the diameter of the opening in the middle of the valve seat 7. When the channel of the sealing ball 6 faces the opening of the valve seat 7, the gas can pass through the pipeline. When the channel of the sealing ball 6 is completely aligned with the opening of the valve seat 7, the gas passing flow rate reaches the maximum.

[0023] The bottom of the sealing ball 6 is provided with a cylindrical groove body, and the corresponding main part of the gas channel is provided with an upwardly protruding cylindrical convex block, and the shape and size of the convex block match the shape and size of the groove body. When the installation is completed, the groove body of the sealing ball 6 clamps the convex block, so that the sealing ball 6 rotates around the convex block, so that the convex block plays a positioning role, and the opening channel of the sealing ball 6 can be aligned with the valve seat 7 channel. The top of the sealing ball 6 is provided with a lock groove, and the lock groove is provided with an internal thread, and the lock groove is cylindrical as a whole. A latch 8 is embedded in the lock groove, and the bottom of the latch 8 is provided with a corresponding external thread that is clamped with the internal thread on the lock groove. The lower part of the latch 8 is provided with a circle of annular protrusions, which are clamped on the bottom of the valve cover 4, so that the latch 8 is fixed in the valve cover 4 and will not be pulled out. Some notches are provided on the side where the latch 8 fits the valve cover 4, and the sealing ring 10 is embedded in the notch, which can enhance the air tightness and prevent the gas from flowing out from the connection. The rotation of the latch pin 8 can drive the sealing ball 6 connected thereto to rotate.

[0024] A threaded hole is provided at the top of the latch 8, a rotating screw 9 is fixed in the threaded hole, and a rotating groove is provided at the top of the rotating screw 9. The rotating screw 9 is connected to the valve switch 2. A fixed block is provided at the bottom of the inner side of the valve switch 2, and the size and shape of the fixed block match the size and shape of the rotating groove. The installed fixed block of the valve switch 2 will be embedded in the rotating groove. When the valve switch 2 rotates, the fixed block will drive the rotating screw 9 to rotate, and the rotating screw 9 will drive the latch 8 to rotate. The rotation of the latch 8 will drive the rotation of the sealing ball 6, thereby realizing the opening and closing of the valve and the adjustment of the flow rate. An inward protrusion is provided at the bottom of the valve switch 2. When the valve switch 2 is fixed on the valve, the protrusion is stuck at the bottom of the connection of the valve seat 7, thereby preventing the valve switch 2 from detaching from the valve.

[0025] A slot is arranged on the top of the valve cover 4, and a slide groove is arranged on the circular ring corresponding to the slot of the valve switch 2. The diameter of the slot is the same as that of the slide groove, but the depth of the slot is less than that of the slide groove. A first magnet 5 that can slide freely is arranged in the slide groove, and the length of the first magnet 5 is less than the depth of the slide groove but greater than the depth of the slot. When the slide groove is aligned with the slot, due to the influence of gravity, the first magnet 5 will fall into the slot, but part of it is located in the slide groove, forming a mortise and tenon structure. At this time, the valve switch 2 and the valve cover 4 cannot rotate relative to each other, realizing the self-locking function. A key 3 is fixed on the rotary switch, and lugs on the side of the key 3 are arranged on the same horizontal line, corresponding to the rotating parts on both sides of the rotary switch. A second magnet 11 is arranged at the bottom of the lug. The magnetic pole at the bottom of the second magnet 11 is opposite to the magnetic pole at the top of the first magnet 5. Due to the principle that like repels like and different shapes attract each other, when the second magnet 11 approaches the first magnet 5, the first magnet 5 will move upward, so that the first magnet 5 is completely located in the slide groove, so that the valve switch 2 can rotate. The key 3 and the valve switch 2 can rotate relative to each other. When the key 3 rotates, the second magnet 11 moves away from the first magnet 5, and the magnetism is insufficient to attract the first magnet 5 upward, thereby achieving self-locking. When the key 3 is rotated so that the lug of the key 3 and the rotating part of the valve switch 2 are in the same straight line, the magnetic force is sufficient to attract the first magnet 5, and the rotary switch can rotate.

[0026] Embodiment 2:

[0027] The valve is mainly composed of two parts: a valve body 1 and a valve switch 2. The valve body 1 is mainly divided into a main ventilation part and a valve cover 4 part. The main ventilation part and the valve cover 4 are perpendicular to each other, and the main ventilation part and the valve cover 4 are integrally cast. The main ventilation part is also provided with an external interface, which can be provided as an integral part with the main ventilation part, or the external interface can be provided separately from the main ventilation part. If the external interface is separated from the main ventilation part, the connection of the main ventilation part is provided with an internal thread, and the part to which the external interface is connected is provided with an external thread, and the connection between the external interface and the main ventilation part is realized by connecting these two internal threads and external threads. If the external interface is provided separately from the main ventilation part, the external interface can be replaced, and the connection of the valve to gas pipelines of different diameters can be realized by changing the pipe diameter of the external interface.

[0028] A sealing ball 6 which is generally circular is also arranged in the ventilation part of the main body of the gas pipeline, and the sealing ball 6 is fixed by a valve seat 7. The valve seat 7 is an annular fixing part, and an opening slightly smaller than the diameter of the ventilation pipeline is provided in the middle for the gas to pass through. A circular arc segment with the same arc as the sealing ball 6 is provided at the position where the valve seat 7 and the sealing ball 6 are in contact, so that the sealing ball 6 can rotate in the cavity formed between the two valve bodies 1. A circle of inwardly protruding limiting rings is provided near the valve body 1 in the ventilation part of the main body of the gas valve, and the valve seat 7 is stuck between the limiting ring and the sealing ball 6, so as to achieve the positioning function. A transversely penetrating channel is provided in the middle of the sealing ball 6, and the diameter of the channel is the same as the diameter of the opening in the middle of the valve seat 7. When the channel of the sealing ball 6 faces the opening of the valve seat 7, the gas can pass through the pipeline. When the channel of the sealing ball 6 is completely aligned with the opening of the valve seat 7, the gas passing flow rate reaches the maximum.

[0029] The bottom of the sealing ball 6 is provided with a cylindrical groove body, and the corresponding main part of the gas channel is provided with an upwardly protruding cylindrical convex block, and the shape and size of the convex block match the shape and size of the groove body. When the installation is completed, the groove body of the sealing ball 6 clamps the convex block, so that the sealing ball 6 rotates around the convex block, so that the convex block plays a positioning role, and the opening channel of the sealing ball 6 can be aligned with the valve seat 7 channel. The top of the sealing ball 6 is provided with a lock groove, and the lock groove is provided with an internal thread, and the lock groove is cylindrical as a whole. A latch 8 is embedded in the lock groove, and the bottom of the latch 8 is provided with a corresponding external thread that is clamped with the internal thread on the lock groove. The lower part of the latch 8 is provided with a circle of annular protrusions, which are clamped on the bottom of the valve cover 4, so that the latch 8 is fixed in the valve cover 4 and will not be pulled out. Some notches are provided on the side where the latch 8 fits the valve cover 4, and the sealing ring 10 is embedded in the notch, which can enhance the air tightness and prevent the gas from flowing out from the connection. The rotation of the latch pin 8 can drive the sealing ball 6 connected thereto to rotate.

[0030] A threaded hole is provided at the top of the latch 8, a rotating screw 9 is fixed in the threaded hole, and a rotating groove is provided at the top of the rotating screw 9. The rotating screw 9 is connected to the valve switch 2. A fixed block is provided at the bottom of the inner side of the valve switch 2, and the size and shape of the fixed block match the size and shape of the rotating groove. The installed fixed block of the valve switch 2 will be embedded in the rotating groove. When the valve switch 2 rotates, the fixed block will drive the rotating screw 9 to rotate, and the rotating screw 9 will drive the latch 8 to rotate. The rotation of the latch 8 will drive the rotation of the sealing ball 6, thereby realizing the opening and closing of the valve and the adjustment of the flow rate. An inward protrusion is provided at the bottom of the valve switch 2. When the valve switch 2 is fixed on the valve, the protrusion is stuck at the bottom of the connection of the valve seat 7, thereby preventing the valve switch 2 from detaching from the valve.

[0031] A slot is arranged on the top of the valve cover 4, and a slide groove is arranged on the circular ring corresponding to the slot of the valve switch 2. The diameter of the slot is the same as that of the slide groove, but the depth of the slot is less than that of the slide groove. A first magnet 5 that can slide freely is arranged in the slide groove, and the length of the first magnet 5 is less than the depth of the slide groove but greater than the depth of the slot. When the slide groove is aligned with the slot, due to the influence of gravity, the first magnet 5 will fall into the slot, but part of it is located in the slide groove, forming a mortise and tenon structure. At this time, the valve switch 2 and the valve cover 4 cannot rotate relative to each other, realizing the self-locking function. A key 3 is fixed on the rotary switch, and lugs on the side of the key 3 are arranged on the same horizontal line, corresponding to the rotating parts on both sides of the rotary switch. A second magnet 11 is arranged at the bottom of the lug. The magnetic pole at the bottom of the second magnet 11 is opposite to the magnetic pole at the top of the first magnet 5. Due to the principle that like repels like and different shapes attract each other, when the second magnet 11 approaches the first magnet 5, the first magnet 5 will move upward, so that the first magnet 5 is completely located in the slide groove, so that the valve switch 2 can rotate. The key 3 and the valve switch 2 can rotate relative to each other. When the key 3 rotates, the second magnet 11 moves away from the first magnet 5, and the magnetism is insufficient to attract the first magnet 5 upward, thereby achieving self-locking. When the key 3 is rotated so that the lug of the key 3 and the rotating part of the valve switch 2 are in the same straight line, the magnetic force is sufficient to attract the first magnet 5, and the rotary switch can rotate.

[0032] like Figure 4 As shown, in this embodiment, the key 3 is separated from the rotary switch. When the staff closes the valve, the key 3 will be taken away, and the valve will always be in a self-locking state. Without the key 3, the valve switch 2 cannot be rotated. The separation of the key 3 and the rotary switch can effectively improve safety.

[0033] The utility model realizes the self-locking function of the valve by arranging the first magnet 5 between the rotary switch and the valve cover 4 to form a latch 8 structure. At the same time, the key 3 containing the second magnet 11 is separated from the valve to further improve the safety and prevent unauthorized personnel from operating the valve.

[0034] The above embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A locking valve, comprising a valve body and a valve switch, characterized in that: The valve body is provided with a valve cover, the valve cover is provided with a slot, the valve switch is provided with a slide groove, a first magnet is provided in the slide groove, the valve cover is connected to the valve switch, the valve switch is connected to the key, a second magnet is provided at the bottom of the key, and the magnetism of adjacent surfaces of the first magnet and the second magnet are opposite.

2. A locking valve according to claim 1, characterized in that: The length of the first magnet is greater than the depth of the slot, the first magnet is at least partially located in the slide groove, and the depth of the slide groove is greater than the length of the first magnet.

3. A locking valve according to claim 1, characterized in that: Lugs are respectively arranged at two ends of the key which are in the same parallel line as the valve switch rotating part, and the slide slot is located within the range of the lugs.

4. A locking valve according to claim 1, characterized in that: A sealing ball fixedly installed through a valve seat is arranged in the valve body.

5. A locking valve according to claim 4, characterized in that: A locking groove is provided on the top of the sealing ball, and the locking groove is connected to the latch.

6. A locking valve according to claim 5, characterized in that: A threaded hole is arranged on the top of the latch pin, and a rotating screw is fixed in the threaded hole.

7. A lock valve according to claim 4 or 5, characterized in that: A rotation groove is arranged on the top of the sealing ball, and a fixing block matching the rotation groove is arranged on the inner side of the valve switch.

8. A lock valve according to claim 5 or 6, characterized in that: A sealing ring is arranged on the connection side between the latch and the valve cover.

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