Valve

Abstract

A valve comprises a valve body, a valve element and a spring, the valve body comprises a valve shell and a fixing block, the valve shell is provided with a circulation channel penetrating in the front-back direction, and the fixing block is fixedly arranged in the circulation channel; the valve element is arranged in the circulation channel and comprises a core disc, a guide rod and a plurality of abutting columns, the core disc is located behind the fixing block, the outer side wall of the core disc abuts against the inner wall of the circulation channel, the guide rod is connected to the core disc and slidably connected to the fixing block in the front-back direction, and the front end of the guide rod is used for abutting against a valve rod of the male connector. The multiple abutting columns are arranged on the front side face of the core disc around the guide rod, and the front ends of the abutting columns are used for abutting against the rear side face of the male connector; the spring is arranged in the circulation channel and arranged on the outer side of the guide rod in a sleeving mode, and the two ends of the spring are connected to the guide rod and the fixing block respectively. In conclusion, when the valve is in butt joint with a male head, the abrasion speed of the guide rod is low, the oil gas conveying efficiency is high, the valve element cannot be in a jumping state, and potential safety hazards are few.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil gas recovery technical field especially relates to a valve. BACKGROUND

[0002] At present, oil gas recovery system commonly uses oil gas recovery valve to control and recover the oil gas volatilized in the process of oil filling, oil storage or transportation, so as to reduce environmental pollution and resource waste, and the valve is widely applied to the scenes such as gas station, tank truck and oil tank, and belongs to the important component part of environmental protection equipment.

[0003] In the existing conventional oil gas recovery valve, the valve core is provided with a guide rod, the guide rod passes through the sliding hole of the valve body and is connected to the valve body through a spring, wherein the spring is sleeved on the outer side of the guide rod of the valve core, and the two ends are connected to the guide rod and the valve body respectively, a pushing force is applied to the guide rod, so that the valve core continuously abuts against the inner side wall of the passage to close the passage in the valve body; when oil gas needs to pass through the passage, the valve rod of the male head abuts against and pushes the guide rod, so that the valve core is pushed away, and oil gas can pass through the passage in the valve body; when there is no oil gas passing through the passage, the male head is retracted, and under the action of the spring force, the valve core abuts against the inner side wall of the passage again, so that the passage in the valve body is closed again. Among them, the spring force of the oil gas recovery valve and the spring force of the male head both play a role in the process of butt joint, when the spring forces of the two are inconsistent or the stress is uneven, the valve core will deviate to one side, the wear rate of the guide rod will be accelerated, and the passage may be blocked, so that the oil gas cannot pass through the passage normally, forming a mixed flow, reducing the flow rate of oil gas in the pipeline, reducing the conveying efficiency of oil gas, further, the flow rate of oil gas in the pipeline is inconsistent, causing the valve core to be in a jumping state, and further increasing the safety hazard. SUMMARY

[0004] The utility model discloses a valve to solve the technical problem that the valve core deviates to one side when the oil gas recovery valve is working, the wear rate of the guide rod is fast, oil gas cannot pass through the passage normally, the oil gas conveying efficiency is low and has certain safety hazard.

[0005] In order to realize the above-mentioned purpose, the utility model provides a valve, which comprises:

[0006] The valve body comprises a valve shell and a fixed block, the valve shell is provided with a flow-through passage penetrating in the front-rear direction, and the fixed block is fixedly arranged in the flow-through passage.

[0007] A valve core is arranged in the flow passage, the valve core comprises a core disc, a guide rod and a plurality of abutting columns, the core disc is located behind the fixed block, the outer side wall of the core disc abuts against the inner wall of the flow passage, the guide rod is connected to the core disc and is slidingly connected to the fixed block in the front-rear direction, the front end of the guide rod is used for abutting against the valve rod of the male head, and the plurality of abutting columns are arranged on the front side of the core disc around the guide rod, and the front end of the abutting column is used for abutting against the rear side of the male head.

[0008] A spring is arranged in the flow passage, the spring is sleeved on the outer side of the guide rod, and the two ends of the spring are connected to the guide rod and the fixed block respectively, so as to apply a forward thrust to the guide rod, and in turn make the outer side wall of the core disc sealingly connected to the inner wall of the flow passage.

[0009] Optionally, the fixed block is provided with a sliding through hole penetrating in the front-rear direction, the guide rod penetrates through and is slidingly connected to the sliding through hole, the front side of the fixed block is provided with an abutting groove corresponding to the sliding through hole, the front end of the guide rod is provided with an abutting disc, the abutting disc protrudes outward from the outer side wall of the guide rod in the radial direction of the guide rod, and the two ends of the spring are connected to the rear side of the abutting disc and the groove bottom of the abutting groove respectively.

[0010] Optionally, the valve body further comprises a plurality of connecting rods arranged in the flow passage, the plurality of connecting rods are arranged around the fixed block, the two ends of the connecting rod are connected to the inner wall of the flow passage and the outer side wall of the fixed block respectively, and the front side of the connecting rod is provided with a first flow guide surface, the first flow guide surface extends obliquely forward from one side close to the inner wall of the flow passage to one side close to the outer side wall of the fixed block.

[0011] Optionally, the front side of the core disc is provided with a second flow guide surface, and the second flow guide surface extends obliquely forward from one side close to the inner wall of the flow passage to one side close to the outer side wall of the guide rod.

[0012] Optionally, a flow guide cover is further included, the flow guide cover is arranged behind the core disc and is connected to the valve core, the rear side of the flow guide cover is provided with a third flow guide surface, and the third flow guide surface extends obliquely rearward from one side close to the inner wall of the flow passage to one side away from the inner wall of the flow passage.

[0013] Optionally, the core disc is provided with a first through hole penetrating in the front-rear direction, the flow guide cover is provided with a second through hole penetrating in the front-rear direction, the second through hole is arranged corresponding to the first through hole, and the guide rod penetrates through the first through hole and the second through hole.

[0014] The valve core further comprises a first connecting nut and a second connecting nut sleeved outside the guide rod, the first connecting nut is located between the fixed block and the flow guide cover, the first connecting nut is connected to the guide rod and abuts against the rear side of the fixed block to prevent the guide rod from moving forward to be separated from the fixed block, the second connecting nut is located at the rear of the flow guide cover, the second connecting nut is connected to the guide rod, the outer side wall of the guide rod is provided with a stop shoulder, the stop shoulder is located in front of the flow guide cover, and the second connecting nut and the stop shoulder limit the movement of the flow guide cover in the front-rear direction.

[0015] Optionally, the outer side wall of the core disc is annularly provided with a first sealing groove, and a first sealing ring is arranged in the first sealing groove and sealingly connected to the inner wall of the flow passage.

[0016] Optionally, the outer side wall of the core disc is annularly provided with a first abutting inclined surface, the first sealing groove is arranged on the first abutting inclined surface, the inner side surface of the flow passage is provided with a second abutting inclined surface corresponding to the first abutting inclined surface, the first abutting inclined surface abuts against the second abutting inclined surface, and the first sealing ring is sealingly connected to the second abutting inclined surface.

[0017] Optionally, the inner side wall of the flow passage is annularly provided with a second sealing groove and an abutting portion relative to the front-rear direction, the front side surface of the abutting portion is connected to the groove wall of the second sealing groove, a second sealing ring is arranged in the second sealing groove, the rear side surface of the second sealing ring abuts against the abutting portion, and the front side surface of the second sealing ring is used for abutting against the rear side surface of the male head to be sealingly connected to the rear side surface of the male head.

[0018] Optionally, the outer side wall of the valve shell is provided with a pressing hole penetrating to the flow passage, the pressing hole is located in front of the second sealing ring, a rotating portion is arranged between the two ends of the pressing handle, the rotating portion is rotationally connected to the hole wall of the pressing hole, one end of the pressing handle away from the valve body is provided with a handle portion, the other end of the pressing handle is provided with a pressing portion, and the pressing portion is used for pressing the outer side wall of the male head rearward.

[0019] When the rear side surface of the male head abuts against the front side surface of the second sealing ring, the pressing handle is rotated around the rotating portion to make the pressing portion press the outer side wall of the male head rearward, and then the second sealing ring is sealingly connected to the rear side surface of the male head.

[0020] Compared with the prior art, the valve door of the embodiment of the utility model has the beneficial effects that:

[0021] The utility model discloses a valve, and the valve core is connected with the valve body through the spring, and the valve shell is provided with the flow channel, and the fixed block is fixedly arranged in the flow channel and is connected with the valve core, and the guide rod is connected with the core disc and is slidably connected with the fixed block in the front-back direction, so that the valve core can move in the front-back direction, wherein the front end of the guide rod is used for abutting against the valve rod of the male head, and the outer side wall of the core disc abuts against the inner wall of the flow channel, and the spring is connected with the guide rod and the fixed block, and the spring force of the spring makes the outer side wall of the core disc continuously and stably abut against the inner wall of the flow channel, so that the outer side wall of the core disc is sealingly connected with the inner wall of the flow channel to close the flow channel, and when the male head is retracted, the spring can also push the valve core back to the original position, so that the outer side wall of the core disc is sealingly connected with the inner wall of the flow channel again, and the plurality of abutting columns are arranged on the front side of the core disc around the guide rod, when the valve is connected with the male head, the valve rod of the male head abuts against the front end of each abutting column, so that the valve core can be kept stable when moving backward, under normal circumstances, the spring exerts a forward thrust on the guide rod, so that the outer side wall of the core disc is sealingly connected with the inner wall of the flow channel, and the flow channel is closed, so that the oil and gas cannot pass through the flow channel, when the male head is connected with the utility model valve, the valve rod of the male head abuts against the front end of the guide rod and the front end of each abutting column, and pushes the valve core backward, so that the valve core moves backward stably, at this time, the outer side wall of the core disc is separated from the inner wall of the flow channel, the flow channel is in an open state, and the oil and gas can pass through the flow channel, when the male head is retracted, the valve core moves forward under the action of the thrust of the spring, so that the outer side wall of the core disc abuts against the inner wall of the flow channel, and the outer side wall of the core disc is sealingly connected with the inner wall of the flow channel again to close the flow channel, so that the oil and gas cannot pass through the flow channel, in conclusion, when the utility model valve is connected with the male head, the front end of the guide rod and the plurality of abutting columns around the guide rod abut against the male head, the valve core is stable during the backward movement, and cannot deviate to one side, so that the guide rod can always move in the front-back direction, the wear of the guide rod is slow, the oil and gas can pass through the flow channel uniformly, the conveying efficiency of the oil and gas is high, the valve core is not in a jumping state, and the safety hazard is small. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structure schematic view of the utility model valve.

[0023] Figure 2 It is a front view of the utility model valve.

[0024] Figure 3 It is a top view of the utility model valve.

[0025] Figure 4 It is Figure 3 It is a sectional view of A-A.

[0026] Figure 5 It is Figure 4Enlarged view of the middle B part.

[0027] BRIEF DESCRIPTION OF DRAWINGS: 1, valve body; 11, valve shell; 111, flow passage; 112, second abutting slope; 113, second sealing groove; 114, abutting part; 115, extrusion hole; 12, fixed block; 121, sliding through hole; 122, abutting groove; 13, connecting rod; 131, first flow guide surface; 14, second sealing ring; 2, valve core; 21, core disc; 211, second flow guide surface; 212, first through hole; 213, first sealing groove; 214, first abutting slope; 22, guide rod; 221, stop shoulder; 23, abutting column; 24, abutting disc; 25, first connecting nut; 26, second connecting nut; 27, first sealing ring; 3, spring; 4, flow guide cover; 41, third flow guide surface; 42, second through hole; 5, extrusion handle; 51, rotating part; 52, handle part; 53, extrusion part. DETAILED DESCRIPTION

[0028] The specific embodiments of the present application will be further described in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application.

[0029] In the description of the present application, it should be understood that the terms "top", "bottom", "inner", "outer", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0030] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0031] As Figures 1 to 5As shown, the side for connecting the male head is front, and the opposite side is back. The utility model discloses a valve, including valve body 1, valve core 2 and spring 3, valve body 1 includes valve shell 11 and fixed block 12, valve shell 11 is equipped with the through flow channel 111 along the front and back direction, fixed block 12 is fixed in the through flow channel 111;Valve core 2 is located in the through flow channel 111, valve core 2 includes core disc 21, guide rod 22 and multiple resistance column 23, the core disc 21 is located in the back of fixed block 12, the lateral wall of core disc 21 is in contact with the inner wall of the through flow channel 111, the guide rod 22 is connected with the core disc 21, and is slidably connected with the fixed block 12 along the front and back direction, the front end of guide rod 22 is used to be in contact with the valve stem of male head, multiple resistance column 23 is located in the front side of core disc 21 around guide rod 22, and the front end of resistance column 23 is used to be in contact with the back side of male head;Spring 3 is located in the through flow channel 111, spring 3 is sleeved on the lateral side of guide rod 22, and the both ends of spring 3 are connected with guide rod 22 and fixed block 12 respectively, so as to exert the forward thrust on guide rod 22, and then make the lateral wall of core disc 21 sealingly connected with the inner wall of the through flow channel 111.

[0032] In the technical scheme, the valve core 2 is connected to the valve body 1 through the spring 3. Specifically, a flow-through passage 111 is arranged in the valve shell 11, and the fixed block 12 is fixedly arranged in the flow-through passage 111 and used for being connected to the valve core 2. Further, the guide rod 22 is connected to the core disc 21 and slidably connected to the fixed block 12 in the front-rear direction, so that the valve core 2 can move in the front-rear direction. The front end of the guide rod 22 is used for abutting against the valve rod of the male head. Further, the outer side wall of the core disc 21 abuts against the inner wall of the flow-through passage 111, and the spring 3 is connected to the guide rod 22 and the fixed block 12. The elastic force of the spring 3 enables the outer side wall of the core disc 21 to continuously and stably abut against the inner wall of the flow-through passage 111, so that the outer side wall of the core disc 21 is sealingly connected to the inner wall of the flow-through passage 111 to close the flow-through passage 111. In addition, when the male head is retracted, the spring 3 can also push the valve core 2 back to the original position, so that the outer side wall of the core disc 21 is sealingly connected to the inner wall of the flow-through passage 111 again. Further, a plurality of abutting columns 23 are arranged on the front side of the core disc 21 and surround the guide rod 22. When the valve is connected to the male head, the valve rod of the male head abuts against the front end of each abutting column 23, so that the valve core 2 can be kept stable when moving backward. Under normal circumstances, the spring 3 applies a forward thrust to the guide rod 22, so that the outer side wall of the core disc 21 is sealingly connected to the inner wall of the flow-through passage 111, and the flow-through passage 111 is closed, so that the oil and gas cannot pass through the flow-through passage 111. When the male head is connected to the valve, the valve rod of the male head abuts against the front end of the guide rod 22 and the front end of each abutting column 23, and pushes the valve core 2 backward, so that the valve core 2 moves backward stably. At this time, the outer side wall of the core disc 21 is separated from the inner wall of the flow-through passage 111, and the flow-through passage 111 is in an open state, so that the oil and gas can pass through the flow-through passage 111. When the male head is retracted, the valve core 2 moves forward to the position where the outer side wall of the core disc 21 abuts against the inner wall of the flow-through passage 111 under the action of the thrust of the spring 3, so that the outer side wall of the core disc 21 is sealingly connected to the inner wall of the flow-through passage 111 again to close the flow-through passage 111, and the oil and gas cannot pass through the flow-through passage 111. In summary, when the valve is connected to the male head, the front end of the guide rod 22 and the abutting columns 23 surrounding the guide rod 22 abut against the male head, the valve core 2 is stable during backward movement and cannot deviate to one side, so that the guide rod 22 can always move in the front-rear direction, the wear of the guide rod 22 is slow, the oil and gas can pass through the flow-through passage 111 uniformly, the oil and gas conveying efficiency is high, the valve core 2 is not in a jumping state, and the safety hidden danger is small.

[0033] In addition, under normal circumstances, the front end of the guide rod 22 is located in front of the fixed hole, and the front end of the abutting column 23 is located behind the fixed hole.

[0034] In addition, the male head is a convex flange end, the front side of the valve is butted to the female head as the female head, and the front side of the male head is further provided with a flange plate for connecting an oil and gas pipeline or other elements (such as other valves) on the oil and gas pipeline.

[0035] Further, the fixing block 12 is provided with a sliding through hole 121 penetrating in the front-rear direction, the guide rod 22 penetrates and is slidably connected to the sliding through hole 121, the front side of the fixing block 12 is provided with an abutting groove 122 corresponding to the sliding through hole 121, the front end of the guide rod 22 is provided with an abutting disc 24, the abutting disc 24 protrudes outward from the outer side wall of the guide rod 22 in the radial direction of the guide rod 22, and the two ends of the spring 3 are respectively connected to the rear side of the abutting disc 24 and the groove bottom of the abutting groove 122, the spring 3 abuts against the rear side of the abutting disc 24 to apply a forward thrust to the valve core 2; wherein the fixing block 12 can be a tubular component extending in the front-rear direction.

[0036] Further, the valve body 1 further comprises a plurality of connecting rods 13 arranged in the flow-through channel 111, the plurality of connecting rods 13 are arranged around the fixing block 12, the two ends of the connecting rod 13 are respectively connected to the inner wall of the flow-through channel 111 and the outer side wall of the fixing block 12, so that the valve body 1 can be stably connected to the fixing block 12, and the abutting column 23 can also penetrate through the gap between the connecting rods 13 and protrude forward of the connecting rods 13, so that the front end of the abutting column 23 can abut against the rear side of the male head, the front side of the connecting rod 13 is provided with a first flow guide surface 131, the first flow guide surface 131 extends obliquely forward from one side close to the inner wall of the flow-through channel 111 to one side close to the outer side wall of the fixing block 12, so as to reduce the resistance of the connecting rod 13 to the oil and gas, and make the oil and gas pass more smoothly, and the first flow guide surface 131 can be an inclined surface or an arc surface.

[0037] Further, the front side of the core disc 21 is provided with a second flow guide surface 211, the second flow guide surface 211 extends obliquely forward from one side close to the inner wall of the flow-through channel 111 to one side close to the outer side wall of the guide rod 22, so as to reduce the resistance of the front side of the core disc 21 to the oil and gas, and make the oil and gas pass more smoothly, and the second flow guide surface 211 can be an inclined surface or an arc surface.

[0038] Further, the flow guide cover 4 is arranged behind the core disc 21 and connected to the valve core 2. The rear side of the flow guide cover 4 is provided with a third flow guide surface 41 extending from the side close to the inner wall of the flow passage 111 to the side far away from the inner wall of the flow passage 111, so that the oil gas passing through the core disc 21 can be transported backward along the third flow guide surface 41, preventing the oil gas from gathering, colliding and then forming a mixed flow at the rear of the core valve, thereby reducing the oil gas transportation efficiency. The third flow guide surface 41 can be an inclined surface or an arc surface.

[0039] Further, the core disc 21 is provided with a first through hole 212 extending in the front-rear direction, and the flow guide cover 4 is provided with a second through hole 42 extending in the front-rear direction. The second through hole 42 is arranged corresponding to the first through hole 212, and the guide rod 22 passes through the first through hole 212 and the second through hole 42. The valve core 2 further includes a first connecting nut 25 and a second connecting nut 26 arranged outside the guide rod 22. The first connecting nut 25 is located between the fixed block 12 and the flow guide cover 4, connected to the guide rod 22 and abutting against the rear side of the fixed block 12, so as to prevent the guide rod 22 from moving forward to be separated from the fixed block 12. The second connecting nut 26 is located behind the flow guide cover 4 and connected to the guide rod 22. The outer side wall of the guide rod 22 is provided with a stop shoulder 221 located in front of the flow guide cover 4. The second connecting nut 26 and the stop shoulder 221 limit the movement of the flow guide cover 4 in the front-rear direction, so as to facilitate the disassembly and assembly of the guide rod 22, the fixed block 12 and the flow guide cover 4.

[0040] Further, the outer side wall of the core disc 21 is provided with a first sealing groove 213, and the first sealing groove 213 is provided with a first sealing ring 27. The first sealing ring 27 is sealingly connected to the inner wall of the flow passage 111, so as to prevent the oil gas from passing through the flow passage 111 under normal circumstances.

[0041] Further, the outer side wall of the core disc 21 is provided with a first abutting inclined surface 214, and the first sealing groove 213 is arranged on the first abutting inclined surface 214. The inner side of the flow passage 111 is provided with a second abutting inclined surface 112 corresponding to the first abutting inclined surface 214. The first abutting inclined surface 214 abuts against the second abutting inclined surface 112, and the first sealing ring 27 is sealingly connected to the second abutting inclined surface 112. Under normal circumstances, the first abutting inclined surface 214 abuts against the second abutting inclined surface 112 forwardly, the first sealing ring 27 is sealingly connected to the second abutting inclined surface 112, and the flow passage 111 is closed. When the valve is connected to the male connector, the first abutting inclined surface 214 is separated from the second abutting inclined surface 112 backwardly, and the flow passage 111 is opened.

[0042] Further, the inner side wall of the flow channel 111 is provided with a second sealing groove 113 and an abutting portion 114 relative to the front-rear direction, the front side of the abutting portion 114 is connected to the groove wall of the second sealing groove 113, the second sealing groove 113 is provided with a second sealing ring 14, the rear side of the second sealing ring 14 abuts against the abutting portion 114, and the front side of the second sealing ring 14 is used to abut against the rear side of the male head to seal the rear side of the male head, thereby preventing oil and gas from leaking between the male head and the valve body 1.

[0043] Further, the valve shell 11 is provided with an extrusion hole 115 penetrating to the flow channel 111, the extrusion hole 115 is located in front of the second sealing ring 14, the extrusion handle 5 is provided with a rotating portion 51 between the two ends, the rotating portion 51 is rotatably connected to the hole wall of the extrusion hole 115, the end of the extrusion handle 5 away from the valve body 1 is provided with a handle portion 52, and the other end is provided with an extrusion portion 53, the extrusion portion 53 is used to extrude the outer side wall of the male head backward; when the rear side of the male head abuts against the front side of the second sealing ring 14, the staff holds the handle to operate, makes the extrusion handle 5 rotate around the rotating portion 51, and then makes the extrusion portion 53 extrude the outer side wall of the male head backward, the rear side of the male head is pressed downward on the front side of the second sealing ring 14, and then the second sealing ring 14 is sealed and connected to the male head; wherein the extrusion handle 5 can be locked by its own structure after rotation to remain stationary, or can be locked by a locking screw or other structure.

[0044] Further, the rear sides of the plurality of abutting columns 23 are coplanar to facilitate simultaneous abutment against the rear side of the male head.

[0045] Further, the front side of the core disc 21 is provided with a guide groove corresponding to the fixed block 12 to facilitate the relative connection of the core disc 21 and the fixed block 12.

[0046] Further, fixedly arranged and fixedly connected refer to the relative positional relationship of two components being fixed, including but not limited to being fixed by a connecting member, being fixed by welding, being fixed by an adhesive, being fixed by one-piece molding, and being fixed by buckle connection.

[0047] Further, slidingly connected and slidingly arranged refer to one component between two connected components being able to slide on the other component along a fixed track, including but not limited to being connected by a sliding block sliding into a sliding groove and being connected by a sliding rod inserted into a hole with a matching size profile.

[0048] Further, rotatably connected and rotatably arranged refer to two connected components being able to rotate, including but not limited to being connected by a bearing and being connected by a clearance fit.

[0049] Further, the connection includes, but is not limited to, fasteners, straps, ropes, pneumatic connection elements, hydraulic connection elements, flange plates, Velcro, buttons.

[0050] In summary, the valve provided by the embodiments of the present application has the following technical effects:

[0051] In the valve, the valve core 2 is connected to the valve body 1 through the spring 3; specifically, a flow-through passage 111 is arranged in the valve shell 11, and the fixed block 12 is fixedly arranged in the flow-through passage 111, and the fixed block 12 is used for being connected to the valve core 2; further, the guide rod 22 is connected to the core disc 21 and is slidably connected to the fixed block 12 in the front-rear direction, so that the valve core 2 can move in the front-rear direction, wherein the front end of the guide rod 22 is used for abutting against the valve rod of the male head; further, the outer side wall of the core disc 21 abuts against the inner wall of the flow-through passage 111, and the spring 3 is connected to the guide rod 22 and the fixed block 12, and the elastic force of the spring 3 enables the outer side wall of the core disc 21 to continuously and stably abut against the inner wall of the flow-through passage 111, so that the outer side wall of the core disc 21 is sealingly connected to the inner wall of the flow-through passage 111 to close the flow-through passage 111, and when the male head is retracted, the spring 3 can also push the valve core 2 back to the original position, so that the outer side wall of the core disc 21 is resealingly connected to the inner wall of the flow-through passage 111; further, a plurality of abutting columns 23 are arranged on the front side of the core disc 21 and surround the guide rod 22, when the valve is connected to the male head, the valve rod of the male head abuts against the front end of each abutting column 23, so that the valve core 2 can be kept stable when moving backward; under normal circumstances, the spring 3 applies a forward thrust to the guide rod 22, so that the outer side wall of the core disc 21 is sealingly connected to the inner wall of the flow-through passage 111, and then the flow-through passage 111 is closed, so that oil and gas cannot pass through the flow-through passage 111; when the male head is connected to the valve, the valve rod of the male head abuts against the front end of the guide rod 22 and the front end of each abutting column 23, and pushes the valve core 2 backward, so that the valve core 2 moves stably backward, at this time, the outer side wall of the core disc 21 is separated from the inner wall of the flow-through passage 111, and the flow-through passage 111 is in an open state, so that oil and gas can pass through the flow-through passage 111; when the male head is retracted, the valve core 2 moves forward under the action of the thrust of the spring 3, so that the outer side wall of the core disc 21 abuts against the inner wall of the flow-through passage 111, and the outer side wall of the core disc 21 is again sealingly connected to the inner wall of the flow-through passage 111 to close the flow-through passage 111, so that oil and gas cannot pass through the flow-through passage 111; in summary, when the valve is connected to the male head, the front end of the guide rod 22 and the abutting columns 23 surrounding the guide rod 22 abut against the male head, the valve core 2 is stable during the backward movement, and will not deviate to one side, so that the guide rod 22 can always move in the front-rear direction, the wear speed of the guide rod 22 is slow, oil and gas can uniformly pass through the flow-through passage 111, the oil and gas conveying efficiency is high, the valve core 2 will not be in a jumping state, and the safety hazard is small.

[0052] The above merely describes preferred embodiments of the present application, and it should be noted that, for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and replacements can be made, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. A valve, characterized in that The utility model provides a valve body (1), the valve body (1) includes valve shell (11) and fixed block (12), the valve shell (11) is equipped with the flow passage (111) through in the front -back direction, the fixed block (12) is fixedly equipped in the flow passage (111) inside, The utility model provides a valve core (2) is equipped in the flow passage (111) inside, the valve core (2) includes the core disc (21), guide rod (22) and a plurality of resist the column (23), the core disc (21) is located the rear of fixed block (12), the outer side wall of core disc (21) is butt joint in the inner wall of flow passage (111), guide rod (22) is connected with core disc (21), and is slidably connected with fixed block (12) in the front -back direction, the front end of guide rod (22) is used to butt joint in the rear side of male head, a plurality of resist the column (23) is equipped in the front side of core disc (21) around guide rod (22), and the front end of resist the column (23) is used to butt joint in the rear side of male head, The utility model provides a spring (3) is equipped in the flow passage (111), and the spring (3) is set up in the outer side of guide rod (22), and the both ends of spring (3) are connected with guide rod (22) and fixed block (12) respectively, to the guide rod (22) with the forward thrust of exerting, in turn make the outer side wall of core disc (21) sealedly connect in the inner wall of flow passage (111). The utility model provides a fixed block (12) is equipped with the sliding through -hole (121) through in the front -back direction, and guide rod (22) passes through and is slidably connected in the sliding through -hole (121), and the front side of fixed block (12) is correspondingly equipped with butt joint groove (122) around the sliding through -hole (121), and the front end of guide rod (22) is equipped with butt joint disc (24), and butt joint disc (24) is protruded from the outer side wall of guide rod (22) along the radial direction of guide rod (22), and the both ends of spring (3) are connected with the rear side of butt joint disc (24) and the groove bottom of butt joint groove (122) respectively.

2. The valve of claim 1, wherein The utility model provides a valve body (1) still includes a plurality of connecting rods (13) equipped in the flow passage (111), and a plurality of connecting rods (13) are arranged around fixed block (12), and the both ends of connecting rod (13) are connected with the inner wall of flow passage (111) and the outer side wall of fixed block (12) respectively, and the front side of connecting rod (13) is equipped with first guide surface (131), and first guide surface (131) extends to the side close to the outer side wall of fixed block (12) from the side close to the inner wall of flow passage (111) to the oblique front.

3. The valve of claim 1, wherein The utility model provides a core disc (21) is equipped with second guide surface (211) in the front side, and second guide surface (211) extends to the side close to the outer side wall of guide rod (22) from the side close to the inner wall of flow passage (111) to the oblique front.

4. The valve of claim 1, wherein ​ 5. The valve of claim 1, wherein Further comprising a flow guide cover (4) covering the rear of the core disc (21) and connected to the valve core (2), the rear side of the flow guide cover (4) is provided with a third flow guide surface (41) extending obliquely rearward from the side close to the inner wall of the flow passage (111) to the side away from the inner wall of the flow passage (111).

6. The valve of claim 5, wherein The core disc (21) is provided with a first through hole (212) penetrating in the front-rear direction, the flow guide cover (4) is provided with a second through hole (42) penetrating in the front-rear direction, the second through hole (42) is arranged corresponding to the first through hole (212), and the guide rod (22) passes through the first through hole (212) and the second through hole (42). The valve core (2) further comprises a first connecting nut (25) and a second connecting nut (26) sleeved outside the guide rod (22), the first connecting nut (25) is located between the fixed block (12) and the flow guide cover (4), the first connecting nut (25) is connected to the guide rod (22) and abuts against the rear side of the fixed block (12) to prevent the guide rod (22) from moving forward to be separated from the fixed block (12), and the second connecting nut (26) is located rearward of the flow guide cover (4), the second connecting nut (26) is connected to the guide rod (22), the outer side wall of the guide rod (22) is provided with a stop shoulder (221) located forward of the flow guide cover (4), and the second connecting nut (26) and the stop shoulder (221) limit the movement of the flow guide cover (4) in the front-rear direction.

7. The valve of claim 1, wherein The outer side wall of the core disc (21) is annularly provided with a first sealing groove (213), and the first sealing groove (213) is provided with a first sealing ring (27) sealed and connected to the inner wall of the flow passage (111).

8. The valve of claim 7, wherein The outer side wall of the core disc (21) is annularly provided with a first abutting inclined surface (214), the first sealing groove (213) is arranged on the first abutting inclined surface (214), the inner side of the flow passage (111) is provided with a second abutting inclined surface (112) corresponding to the first abutting inclined surface (214), the first abutting inclined surface (214) abuts against the second abutting inclined surface (112), and the first sealing ring (27) is sealed and connected to the second abutting inclined surface (112).

9. The valve of claim 1, wherein The inner side wall of the flow passage (111) is annularly provided with a second sealing groove (113) and an abutting portion (114) relative to the front-rear direction, the front side of the abutting portion (114) is connected to the groove wall of the second sealing groove (113), the second sealing groove (113) is provided with a second sealing ring (14), the rear side of the second sealing ring (14) abuts against the abutting portion (114), and the front side of the second sealing ring (14) is used for abutting against the rear side of the male head to be sealed and connected to the rear side of the male head.

10. The valve of claim 9, wherein The valve body (1) further comprises an extruding handle (5), an outer wall of the valve shell (11) is provided with an extruding hole (115) penetrating to the flow passage (111), the extruding hole (115) is located in front of the second sealing ring (14), two ends of the extruding handle (5) are provided with a rotating part (51), the rotating part (51) is rotationally connected to a hole wall of the extruding hole (115), one end of the extruding handle (5) away from the valve body (1) is provided with a handle part (52), and the other end is provided with an extruding part (53), the extruding part (53) is used for extruding the outer wall of the male head rearward. When the rear side of the male head abuts against the front side of the second sealing ring (14), the extruding handle (5) rotates around the rotating part (51), the extruding part (53) extrudes the outer wall of the male head rearward, and then the second sealing ring (14) is sealingly connected to the rear side of the male head.

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