Breaking valve

Abstract

A valve body a is arranged at an oil outlet of the oil gun, the limiting part is embedded in the outer side of the valve body a, the limiting part comprises a sleeve embedded in the outer side of the valve body a, a clamping block is arranged in the sleeve in a sliding mode, a spring b is arranged at the tail end of the clamping block, a sliding sleeve is embedded in the outer side of the sleeve in a sliding mode, and the spring b is arranged on the outer side of the sliding sleeve in a sliding mode. The spring b is located between the sleeve and the clamping block, and the gun barrel is arranged at one end of the valve body a and connected with the valve body a in a clamped mode. By arranging the limiting part, the clamping block can be clamped into the clamping groove under the pushing of the spring b to fix the position of the gun barrel, and when the oil gun is used for filling oil and the gun barrel extends into the oil filling hole, the sliding sleeve can be driven to slide, so that the clamping block can move, and the valve body a and the valve body b can be disconnected when the gun barrel is not pulled out of the oil filling hole and a vehicle is started to pull the gun barrel; therefore, the preset pulling force value of the breaking valve can be adjusted.

Description

Technical Field

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

[0002] A breakaway valve is an emergency disconnect device that connects the fuel nozzle to the dispenser. Without a breakaway valve, if someone forgets to remove the fuel nozzle from the fuel tank after refueling, the car could pull over the dispenser or sever the fuel hose, causing a fuel leak and an accident. With a breakaway valve installed, if the dispenser nozzle is pulled beyond a preset tension, it will immediately disconnect from the valve. Once disconnected, the valve seals the fuel hose, preventing damage to the dispenser, fuel leaks, and potential explosions, ensuring personal safety.

[0003] Existing breakaway valves used in gas stations will promptly break away from the breakaway valve if the fuel nozzle is pulled by a force exceeding a preset pulling force. If the preset force is too small, the breakaway valve may suddenly break during normal use. If the preset force is too large, the breakaway valve may not break when the fuel nozzle is forgotten to be pulled out of the car's fuel tank and the car is started, posing a safety hazard. The preset pulling force of breakaway valves used in gas stations is usually a fixed value and cannot be adjusted. Utility Model Content

[0004] The purpose of the present utility model is to provide a breakaway valve to solve the problem raised in the above background technology that the preset force is too small, which may cause the breakaway valve to suddenly break during normal use, and the preset force is too large, which may cause the breakaway valve to fail to break when the car is started due to forgetting to pull out the gas gun from the car's fuel tank, causing a safety hazard. In addition, the preset pulling force of the breakaway valves usually used in gas stations is usually a fixed value and cannot be adjusted.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a breakaway valve, comprising an oil gun, a limiter, and a gun barrel:

[0006] A valve body a is provided at the oil outlet of the oil gun, and the limiting part is embedded in the outside of the valve body a. The limiting part includes a sleeve embedded in the outside of the valve body a, and a block is slidably provided inside the sleeve. A spring b is provided at the end of the block. A sliding sleeve is slidably embedded in the outside of the sleeve, and the spring b is located between the sleeve and the block. The sliding sleeve slides to the outside of the block and covers it to limit the displacement of the block. The gun barrel is provided at one end of the valve body a and is clamped therewith. The gun barrel includes a valve body b provided at one end of the gun barrel close to the oil gun and a clamping groove opened on the outer surface of the valve body b. The clamping groove is clamped and connected with the clamping block, and the clamping block is embedded in the clamping groove to limit the position of the valve body b.

[0007] By adopting the above technical solution, the clamping block can be inserted into the clamping slot under the push of spring b to fix the position of the gun barrel. When the oil gun is not refueling, the displacement of the clamping block is limited by the sliding sleeve so that the clamping block does not move, thereby firmly fixing the position of the gun barrel. When the oil gun is refueling, the barrel will drive the sliding sleeve to slide when it is extended into the refueling hole, thereby allowing the clamping block to move, so that the gun barrel is not pulled out of the refueling hole. When the vehicle starts and the gun barrel is pulled, the valve body a will be disconnected from the valve body b, so that the preset tension value of the breakaway valve can be adjusted.

[0008] Preferably, the oil gun further comprises a valve core a slidably arranged inside the valve body a and a spring a arranged at the end of the valve core a, the spring a being located between the valve core a and the valve body a, and a gasket being arranged at the outward end of the valve core a.

[0009] By adopting the above technical solution, the valve core a can be displaced by the thrust provided by the spring a to close the valve body a, and the gasket can improve the sealing degree.

[0010] Preferably, the limiting portion further includes four sliders arranged on the outside of the sleeve and four sliding grooves opened inside the sliding sleeve, and the sliders are embedded in the sliding grooves and are slidably connected thereto.

[0011] By adopting the above technical solution, the sliding sleeve can slide along the slider on the outer side of the sleeve.

[0012] Preferably, four clamping blocks are provided, and the ends of the four clamping blocks can be extended to the outside of the sleeve by movement.

[0013] By adopting the above technical solution, the sliding sleeve can limit the displacement of the clamping block so that the clamping block does not move.

[0014] Preferably, there are four card slots, and the axis positions of the four card slots are consistent with the axis positions of the four card blocks.

[0015] By adopting the above technical solution, the four clamping blocks can be slid into the clamping slots to fix the position of the gun barrel.

[0016] Preferably, the gun barrel further comprises a valve core b slidably arranged inside the valve body b and a spring c arranged at the end of the valve core b, the spring c is located between the valve core b and the valve body b, and a gasket is provided at the outward end of the valve core b.

[0017] By adopting the above technical solution, the valve core b can be displaced by the thrust provided by the spring c to close the valve body b, and the gasket can improve the sealing degree.

[0018] Preferably, the end of the valve core b close to the valve core a is provided with a convex arc surface, and the end of the valve core a close to the valve core b is provided with a concave arc surface, and the convex arc surface of the valve core b can be embedded in the concave arc surface of the valve core a.

[0019] By adopting the above technical solution, when the valve body a and the valve body b are connected, the valve core a will abut against the valve core b and push each other so that the pipeline can flow.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: by providing a limiting portion, the position of the gun barrel can be fixed by means of a card block which is inserted into the card slot under the push of a spring b; when the oil gun is not refueling, the displacement of the card block is limited by a sliding sleeve so that the card block does not move, thereby firmly fixing the position of the gun barrel; when the oil gun is refueling, the gun barrel will drive the sleeve to slide when it is extended into the refueling hole, thereby enabling the card block to be displaced, so that when the gun barrel is not pulled out of the refueling hole and the vehicle starts and the gun barrel is pulled, the valve body a will be disconnected from the valve body b, thereby allowing the preset pulling force value of the break valve to be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of this application;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the connection between the oil gun and the limiting part of this application;

[0023] Figure 3 This is a schematic diagram of the side cross-sectional structure of the gun barrel of this application;

[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of the connection between the gun barrel and the limiting part of this application;

[0025] Figure 5 This is a schematic diagram of the connection structure between the sliding sleeve and the sleeve in this application.

[0026] In the figure: 1. Oil gun; 101. Valve body a; 102. Valve core a; 103. Spring a; 2. Limiting part; 201. Sleeve; 202. Slider; 203. Block; 204. Spring b; 205. Sleeve; 206. Slide; 3. Gun barrel; 301. Valve body b; 302. Valve core b; 303. Spring c; 304. Slot. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] For example 1, please refer to Figure 1 、 Figure 2 and Figure 3The utility model provides a technical solution: a breakaway valve, comprising an oil gun 1, a limiting portion 2 and a gun barrel 3:

[0029] A valve body a101 is provided at the oil outlet of the oil gun 1, a valve core a102 is slidingly provided inside the valve body a101, a spring a103 is provided at the end of the valve core a102, the spring a103 is located between the valve core a102 and the valve body a101, a gasket is provided at the outward end of the valve core a102, and the thrust provided by the spring a103 can push the valve core a102 to move and close the valve body a101. The gasket can improve the sealing degree and limit the Part 2 is embedded in the outer side of the valve body a101, and a sleeve 201 is provided on the outer side of the valve body a101. A block 203 is slidably provided inside the sleeve 201, and a spring b204 is provided at the end of the block 203. A sleeve 205 is slidably provided on the outer side of the sleeve 201. The spring b204 is located between the sleeve 201 and the block 203. The sleeve 205 slides to the outer side of the block 203 to cover it to limit the displacement of the block 203. The barrel 3 It is arranged at one end of the valve body a101 and is clamped therewith, and a valve body b301 is arranged at the end of the barrel 3 close to the oil gun 1, and a clamping groove 304 is opened on the outer surface of the valve body b301, and the clamping groove 304 is clamped and connected with the clamping block 203. The clamping block 203 is embedded in the clamping groove 304 to limit the position of the valve body b301. The clamping block 203 can be clamped into the clamping groove 304 under the push of the spring b204 to fix the position of the barrel 3. When the oil gun 1 is not refueling, the displacement of the clamping block 203 is limited by the sliding sleeve 205 so that the clamping block 203 does not move, thereby firmly fixing the position of the barrel 3. When the oil gun 1 is refueling, the barrel 3 is extended into the refueling hole, which drives the sliding sleeve 205 to slide, thereby allowing the clamping block 203 to be displaced, so that the barrel 3 is not pulled out of the refueling hole. When the vehicle starts and the barrel 3 is pulled, the valve body a101 will be disconnected from the valve body b301, so that the preset tension value of the break valve can be adjusted.

[0030] For example 2, please refer to Figure 3 、 Figure 4 and Figure 5 The present invention provides a technical solution: a breakaway valve, comprising a limit portion 2, a sleeve 201 and a slider 202:

[0031] Four sliders 202 are provided on the outside of the sleeve 201, and four slide grooves 206 are provided inside the slide sleeve 205. The sliders 202 are embedded in the slide grooves 206 and are slidably connected thereto, so that the slide sleeve 205 can slide and displace along the sliders 202 on the outside of the sleeve 201. Four clamping blocks 203 are provided, and the ends of the four clamping blocks 203 can be extended to the outside of the sleeve 201 by movement. The sliding sleeve 205 can be slid to limit the displacement of the clamping blocks 203 so that the clamping blocks 203 do not move. Four clamping grooves 304 are provided, and the axial center positions of the four clamping grooves 304 are consistent with the axial center positions of the four clamping blocks 203. The four clamping blocks 203 can be slid into the clamping grooves 304 to fix the position of the barrel 3.

[0032] For example three, please refer to Figure 3 、 Figure 4 and Figure 5 The utility model provides a technical solution: a breakaway valve, comprising a barrel 3, a valve body b301 and a valve core b302:

[0033] A valve core b302 is slidingly arranged inside the valve body b301, and a spring c303 is arranged at the end of the valve core b302. The spring c303 is located between the valve core b302 and the valve body b301. A gasket is arranged on the outward end of the valve core b302, and the valve core b302 can be pushed to move by the thrust provided by the spring c303 to close the valve body b301. The gasket can improve the sealing degree. A convex arc surface is arranged on the end of the valve core b302 close to the valve core a102, and a concave arc surface is arranged on the end of the valve core a102 close to the valve core b302. The convex arc surface of the valve core b302 can be embedded in the concave arc surface of the valve core a102, so that when the valve body a101 and the valve body b301 are docked, the valve core a102 will abut against the valve core b302 and push each other to enable circulation in the pipeline.

[0034] Working principle: First, the block 203 can be inserted into the slot 304 under the push of the spring b204 to fix the position of the barrel 3. When the oil gun 1 is not refueling, the sliding sleeve 205 limits the displacement of the block 203 so that the block 203 does not move, thereby firmly fixing the position of the barrel 3. When the oil gun 1 is refueling, the barrel 3 is inserted into the refueling hole, which drives the sliding sleeve 205 to slide, thereby allowing the block 203 to be displaced, so that the barrel 3 is not pulled out of the refueling hole. When the vehicle starts and the barrel 3 is pulled, the valve body a101 will be disconnected from the valve body b301, so that the preset tension value of the break valve can be adjusted, so that when no refueling is done, the valve body a101 and the valve body b301 will not be easily separated, which is safe and reliable. When refueling, if the oil gun 1 and the barrel 3 are pulled by a force exceeding the preset tension, they will be disconnected from the valve body a101 and the valve body b301 in time.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Breakaway valve, characterized in that: include: An oil gun, wherein a valve body a is provided at the oil outlet of the oil gun; A limiting portion is embedded in the outer side of the valve body a. The limiting portion includes a sleeve embedded in the outer side of the valve body a. A clamping block is slidably provided inside the sleeve. A spring b is provided at the end of the clamping block. A sliding sleeve is slidably embedded in the outer side of the sleeve. The spring b is located between the sleeve and the clamping block. The sliding sleeve slides to the outside of the clamping block to cover it to limit the displacement of the clamping block. The gun barrel is arranged at one end of the valve body a and is clamped therewith. The gun barrel includes a valve body b arranged at one end of the gun barrel near the oil gun and a clamping groove opened on the outer surface of the valve body b. The clamping groove is clamped and connected with the clamping block, and the clamping block is embedded in the clamping groove to limit the position of the valve body b.

2. The breakaway valve according to claim 1, wherein: The oil gun also includes a valve core a slidably arranged inside the valve body a and a spring a arranged at the end of the valve core a. The spring a is located between the valve core a and the valve body a. A gasket is arranged at the outward end of the valve core a.

3. The breakaway valve according to claim 1, wherein: The limiting portion further comprises four sliding blocks arranged on the outside of the sleeve and four sliding grooves provided inside the sliding sleeve, wherein the sliding blocks are embedded in the sliding grooves and are slidably connected therewith.

4. The breakaway valve according to claim 3, wherein: Four clamping blocks are provided, and the ends of the four clamping blocks can be extended to the outside of the sleeve by movement.

5. The breakaway valve according to claim 3, characterized in that: There are four card slots, and the axis positions of the four card slots are consistent with the axis positions of the four card blocks.

6. The breakaway valve according to claim 1, characterized in that: The gun barrel further comprises a valve core b slidably arranged inside the valve body b and a spring c arranged at the end of the valve core b. The spring c is located between the valve core b and the valve body b. A gasket is arranged at the outward end of the valve core b.

7. The breakaway valve according to claim 6, characterized in that: The end of the valve core b close to the valve core a is provided with a convex arc surface, and the end of the valve core a close to the valve core b is provided with a concave arc surface. The convex arc surface of the valve core b can be embedded in the concave arc surface of the valve core a.

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