CN117386860A - Safety valve for automobile oil tank - Google Patents
Safety valve for automobile oil tank Download PDFInfo
- Publication number
- CN117386860A CN117386860A CN202311687197.6A CN202311687197A CN117386860A CN 117386860 A CN117386860 A CN 117386860A CN 202311687197 A CN202311687197 A CN 202311687197A CN 117386860 A CN117386860 A CN 117386860A
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- Prior art keywords
- valve
- rod
- valve seat
- block
- oil tank
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- 230000000903 blocking effect Effects 0.000 claims abstract description 28
- 230000002093 peripheral effect Effects 0.000 claims abstract description 14
- 239000002828 fuel tank Substances 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims description 11
- 230000008093 supporting effect Effects 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 7
- 239000000446 fuel Substances 0.000 abstract description 22
- 238000009434 installation Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/18—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on either side
- F16K17/19—Equalising valves predominantly for tanks
- F16K17/194—Equalising valves predominantly for tanks weight-loaded
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The application discloses an automobile oil tank relief valve relates to relief valve technical field. The application comprises the following steps: the exhaust pipe head is arranged on the outer peripheral side of the upper valve seat, and the valve core assembly is arranged in the upper valve seat; the lower valve seat is connected with the upper valve seat through a bolt, a valve core groove is formed in the lower valve seat, the lower valve seat is communicated with the upper valve seat through the valve core groove, and a valve core block of the valve core assembly is positioned in the valve core groove in a normal state of the valve core assembly; the central tube is coaxially fixed in the lower valve seat, the outer peripheral side of the central tube is fixedly provided with a containing shell, an inner blocking block is arranged in the containing shell through a connecting spring, and an exhaust channel is formed between the inner blocking block and a valve port of the lower valve seat; the inner shell is installed at one end of the central tube in a communicating mode, and at least two long tubes are installed on the outer periphery side of the inner shell. This application still can realize admitting air and exhaust operation to the oil tank when preventing that the fuel from leaking, maintains the pressure in the oil tank, avoids the oil tank to appear breaking the condition.
Description
Technical Field
The application relates to the technical field of safety valves, in particular to an automobile oil tank safety valve.
Background
The main purpose of the oil tank safety valve is to ensure the pressure balance in the oil tank. The relief valve exhaust structure comprises valve body, case and valve port, the case is plugged for the valve port, promote the case when the oil tank internal pressure is too high and remove, the case no longer is plugged for the valve port, gas in the oil tank can be discharged through the valve port this moment, reduce the pressure in the oil tank, this type of structure is mainly realized the gas discharge in the oil tank, the purpose is to reduce the pressure in the oil tank, and on this structural basis, only need install the check valve subassembly on the valve casing, when ambient pressure is greater than oil tank internal pressure, the check valve communicates external and oil tank, ambient gas enters into the oil tank, make the interior too little gas of oil tank obtain the balance, can guarantee the pump oil pressure invariable, above is normal condition relief valve effect, but when abnormal conditions appear, mainly refer to the vehicle because the accident appears turning on one's side, the position of relief valve changes this moment, receive inside fuel pressure, relief valve plugging mechanism can be with the valve port position, avoid receiving fuel pressure to cause the valve port to open the oil leak, and the check valve subassembly can't normally open under the oil pressure effect because can't be opened by outside, therefore can prevent the oil tank inner space and oil tank internal pressure intercommunication, if the fuel pump pressure is not be adjusted to the internal and external pressure is too big, the oil tank can not be balanced when the oil tank is out, the case is out of the case, the oil tank is broken, if the case is also can be balanced, the case is out, and the case is safe, and the case is out, and the case is safe, if the case is out.
Disclosure of Invention
The purpose of the present application is: in order to solve the problems set forth in the background art, the application provides an automobile fuel tank safety valve.
The application specifically adopts the following technical scheme for realizing the purposes:
an automotive fuel tank safety valve comprising:
the exhaust pipe head is arranged on the outer peripheral side of the upper valve seat, and the valve core assembly is arranged in the upper valve seat;
the lower valve seat is connected with the upper valve seat through a bolt, a valve core groove is formed in the lower valve seat, the lower valve seat is communicated with the upper valve seat through the valve core groove, and a valve core block of the valve core assembly is positioned in the valve core groove in a normal state of the valve core assembly;
the central tube is coaxially fixed in the lower valve seat, the outer peripheral side of the central tube is fixedly provided with a containing shell, an inner blocking block is arranged in the containing shell through a connecting spring, and an exhaust channel is formed between the inner blocking block and a valve port of the lower valve seat;
the inner shell is installed at one end of the central tube in a communicating manner, at least two long tubes are installed on the outer periphery side of the inner shell, an inner valve rod for plugging the end part of the long tube is installed in the long tube, one end of the inner valve rod is located in the inner shell, an actuating rod which enters the inner shell through the central tube is installed on the inner plugging block, the actuating rod is linked with the inner valve rod, and when the inner plugging block is close to a valve port of the lower valve seat, the inner valve rod is driven to slide along the axis of the long tube through the actuating rod so as to release plugging of the end part of the long tube.
Further, an execution block is arranged at one end of the execution rod, which is positioned in the inner shell, a guide pillar is arranged on the execution block, a linkage block is arranged at one end of the inner valve rod, which is positioned in the inner shell, and a guide hole is formed in the linkage block, and the guide pillar is tangent to the guide hole.
Further, the inner valve rod comprises a first valve rod, an elastic column and a second valve rod, one end of the first valve rod is connected with the linkage block, the other end of the first valve rod is connected with the second valve rod through the elastic column, the long pipe is connected with the inner shell through a rubber sleeve, and the lower valve seat is provided with a mounting assembly through which the inclination angle of the long pipe is adjusted.
Further, the flange panel is installed to lower disk seat week side, the installation component includes the adjusting screw who is connected with flange panel threaded connection, and adjusting screw one end rotates and is connected with first installation pole, it has the second installation pole to articulate on the first installation pole, it has the third installation pole to articulate on the second installation pole, and the third installation pole is installed on the long tube, the fixed block is installed in the inner shell outside, install the fourth installation pole on the long tube, fourth installation pole is articulated with the fixed block.
Further, the valve core assembly comprises a valve core block, an inner leg, a pull rod and a supporting spring, wherein the inner leg is in threaded connection with the upper valve seat, one end of the pull rod is in sliding fit with the inner leg, the other end of the pull rod is connected to the valve core block, and the supporting spring is sleeved on the pull rod.
Further, the inner leg and the pull rod are hollow penetrating structures, a penetrating hole communicated with the pull rod is formed in the valve core block, the end part of the upper valve seat is in threaded connection with a housing covering the end opening of the upper valve seat, and an emergency check valve is mounted on the housing.
Further, two arc plates are installed at the bottom of the lower valve seat, the inner diameter and the outer diameter of the arc plates are gradually reduced from top to bottom, and a bearing plate positioned in the enclosing area of the two arc plates is installed on the inner blocking block.
Further, two locating blocks are installed on the outer periphery side of the inner shell, a plug rod is installed on the outer side of the arc plate, one end of the plug rod is inserted into a cavity of the locating block, a reset spring is connected between the end portion of the plug rod located in the cavity of the locating block and the locating block, a limiting ring is installed at the bottom of the lower valve seat in a sliding mode, and the inner periphery side of the limiting ring is in a conical surface structure and is attached to the outer periphery sides of the two arc plates.
Further, the valve port of the lower valve seat is provided with a cone opening, the end part of the inner blocking block is provided with a frustum head, and the periphery side of the frustum head is embedded with a sealing ring.
Further, the outer periphery side of the central tube is provided with a mounting hole in a penetrating mode, a connecting plate penetrating the mounting hole is slidably arranged in the central tube, the inner blocking block is arranged on the connecting plate, and the execution rod is arranged on the connecting plate.
The beneficial effects of this application are as follows:
this application still can realize admitting air and exhaust operation to the oil tank when preventing that the fuel from leaking, maintains the pressure in the oil tank, avoids the oil tank to appear breaking the condition.
Drawings
FIG. 1 is a schematic perspective view of the present application;
FIG. 2 is a perspective cross-sectional view of FIG. 1 of the present application;
FIG. 3 is an enlarged view of the structure of FIG. 2A of the present application;
FIG. 4 is an enlarged view of the structure at B in FIG. 2 of the present application;
FIG. 5 is an enlarged view of the structure of FIG. 2C of the present application;
FIG. 6 is another perspective cross-sectional view of FIG. 1 of the present application;
FIG. 7 is an enlarged view of the structure of FIG. 6D of the present application;
FIG. 8 is a perspective exploded view of the present application;
reference numerals: 1. an upper valve seat; 2. an exhaust pipe head; 3. a valve core assembly; 301. a valve core block; 302. an inner leg; 303. a pull rod; 304. a support spring; 305. a through hole; 4. a lower valve seat; 5. a spool groove; 6. a central tube; 7. a housing case; 8. a connecting spring; 9. an inner blocking block; 10. an exhaust passage; 11. an inner case; 12. a long tube; 1201. a tube shell; 13. an inner valve stem; 1301. a first valve stem; 1302. an elastic column; 1303. a second valve stem; 1304. a piston head; 14. an actuator lever; 15. an execution block; 16. a guide post; 17. a linkage block; 18. a guide hole; 19. a rubber sleeve; 20. a mounting assembly; 2001. adjusting a screw; 2002. a first mounting bar; 2003. a second mounting bar; 2004. a third mounting bar; 2005. a fixed block; 2006. a fourth mounting bar; 21. a housing; 22. an arc plate; 23. a pressure bearing plate; 24. a positioning block; 25. a rod; 26. a return spring; 27. a limiting ring; 28. a cone opening; 29. a conical frustum head; 30. a seal ring; 31. a mounting hole; 32. a connecting plate; 33. a flange panel; 34. an emergency check valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
Example 1
As shown in fig. 1 to 8, a safety valve for an automobile fuel tank according to an embodiment of the present application includes:
the exhaust pipe head 2 is arranged on the outer periphery side of the upper valve seat 1, and the valve core assembly 3 is arranged in the upper valve seat 1;
the lower valve seat 4 is connected with the upper valve seat 1 through bolts, the lower valve seat 4 is provided with a valve core groove 5, the lower valve seat 4 is communicated with the upper valve seat 1 through the valve core groove 5, a valve core block 301 of the valve core assembly 3 is positioned in the valve core groove 5 in a normal state, the main structure of the existing safety valve can be shown based on the above, a one-way air inlet valve which is not shown in the figure is further arranged on the lower valve seat 4, the one-way air inlet valve aims to supplement air into an oil tank, when the pressure in the oil tank is higher than the external pressure, the valve core assembly 3 is pushed to move until the valve core assembly 3 is not blocked on the valve core groove 5 any more, the air in the oil tank is discharged through the exhaust pipe head 2, the pressure reduction operation in the oil tank is realized, and the above structure realizes the air inlet and outlet actions of the oil tank and the outside;
the central tube 6 is coaxially fixed in the lower valve seat 4, the containing shell 7 is fixed on the outer peripheral side of the central tube 6, the inner blocking block 9 is arranged in the containing shell 7 through the connecting spring 8, an exhaust channel 10 is formed between the inner blocking block 9 and the valve port of the lower valve seat 4, the connecting spring 8 has a supporting effect on the inner blocking block 9, when the oil tank is at a normal position, the inner blocking block 9 has a downward moving trend under the action of gravity, but in order to avoid the overlarge exhaust channel 10, the connecting spring 8 supports the inner blocking block 9, the position of the inner blocking block 9 from the valve port of the lower valve seat 4 is kept in a reasonable range, then in the running bumping process of a vehicle, the inner blocking block 9 moves up and down under the action of the connecting spring 8, the blocking and unblocking of the valve port of the lower valve seat 4 can be realized, this structure purpose is to prevent jolting and cause the oil in the oil tank to enter into down disk seat 4 in, wherein the oil tank is in exhaust process, the gas in the oil tank can be through exhaust passage 10 and case subassembly 3 contact, and when the vehicle exists and turns on one's side, when empting, the position of oil tank changes, can cause the fuel in the oil tank to cover the inside structure relief valve structure of oil tank such as interior shutoff piece 9, at this moment under the pressure of fuel, interior shutoff piece 9 can be close to down disk seat 4 valve port, and will be plugged down disk seat 4 valve port under the promotion of fuel pressure, prevent that the fuel from entering into case subassembly 3 and case groove 5 junction, the effect of preventing the fuel leakage has been played, based on above disclosure, the exhaust of oil tank can be realized to this application relief valve, prevent the oil tank leakage when the vehicle falls over, and in this application further technical characteristics, still include:
the inner shell 11 is communicated with and arranged at one end of the central tube 6, at least two long tubes 12 are arranged on the outer peripheral side of the inner shell 11, an inner valve rod 13 for plugging the end part of the long tube 12 is arranged in the long tube 12, one end of the inner valve rod 13 is positioned in the inner shell 11, an actuating rod 14 which enters the inner shell 11 through the central tube 6 is arranged on the inner plugging block 9, the actuating rod 14 is linked with the inner valve rod 13, when the inner plugging block 9 is close to a valve port of the lower valve seat 4, the actuating rod 14 drives the inner valve rod 13 to slide along the axis of the long tube 12 so as to remove the plugging of the end part of the long tube 12, the number of the long tube 12 is two, after the long tube 12 is arranged, the end parts of the two long tubes 12 are positioned at two symmetrical corners of the bottom of the oil tank, normally, the end part of the long tube 12 is immersed in the fuel, the end part of the long tube 12 is plugged by the inner valve rod 13, the fuel cannot enter the long tube 12, other structures of the safety valve can work normally, taking vehicle rollover as an example, after the vehicle rollover, the fuel in the vehicle rollover necessarily moves towards the low side, the normal installation position of the safety valve is positioned at the middle position of the top of the fuel tank, at the moment, multiple conditions exist, if the fuel quantity of the fuel tank is small and can not be covered to the position of the inner blocking block 9, the fuel can not be discharged, normal exhaust and air intake can be realized through the safety valve, if the fuel quantity in the fuel tank can cover the inner blocking block 9 or incompletely cover the inner blocking block 9, at the moment, the inner blocking block 9 can be pushed to move, the connecting spring 8 only plays a supporting role on the inner blocking block 9, the connecting spring 8 plays an auxiliary pushing role on the movement of the inner blocking block 9, the inner blocking block 9 is beneficial to move to block the valve port of the lower valve seat 4, the purpose of preventing oil leakage is achieved, the actuating rod 14 can be driven to move together in the moving process of the inner valve block, and actuating lever 14 and interior valve pole 13 are the linkage cooperation, when actuating lever 14 motion in-process, interior valve rod 13 moves in long tube 12, interior valve rod 13 releases the shutoff to long tube 12, the circumstances that exist at this moment is as follows, after the vehicle turns on one's side, long tube 12 part position also changes, because the mounted position of long tube 12, after the vehicle turns on one's side, necessarily there is a long tube 12 tip can not be covered by the fuel, another is covered by the fuel and does not influence the structure implementation, because the removal of interior valve rod 13, through long tube 12 as the intercommunication, with the gas in the oil tank through long tube 12, behind inner shell 11 and the center tube 6, with the inside intercommunication of lower disk seat 4, interior shutoff piece 9 still is in the shutoff state this moment, nevertheless the gas in the oil tank can normally be discharged, thereby maintain the pressure in the oil tank, avoid the oil tank to break, therefore this application can still realize the exhaust operation to the oil tank when preventing the fuel leakage.
As shown in fig. 4 and 8, in the first embodiment, the execution block 15 is installed at one end of the execution rod 14 located inside the inner shell 11, the guide post 16 is installed on the execution block 15, the linkage block 17 is installed at one end of the inner valve rod 13 located inside the inner shell 11, the guide hole 18 is formed in the linkage block 17, the guide post 16 is tangent to the guide hole 18, the execution rod 14 moves to drive the execution block 15 and the guide post 16 on the execution block 15 to linearly move, and based on the movement of the guide post 16, an oblique thrust is applied to the linkage block 17 through the guide hole 18, so that a pulling effect is achieved, the inner valve rod 13 is pulled to move, the linkage of the movement of the inner valve rod 13 and the movement of the inner valve rod 13 is achieved, and when the inner valve rod 9 seals the lower valve seat 4 from oil leakage, another gas circulation channel can be opened.
As shown in fig. 4-6 and 8, in the first embodiment, the inner valve rod 13 includes a first valve rod 1301, an elastic column 1302 and a second valve rod 1303, where the end of the second valve rod 1303 is provided with a piston head 1304, and the long tube 12 is configured with a tube shell 1201, the size of the tube shell 1201 is larger than that of the piston head 1304, the tube shell 1201 is intended to accommodate the piston head 1304, the size of the piston head 1304 is adapted to the inner diameter size of the long tube 12, when the piston head 1304 is in the tube shell 1201, the blocking of the whole long tube 12 is released, and the air circulation can be achieved, one end of the first valve rod 1301 is connected with the linkage block 17, the other end of the first valve rod 1301 is connected with the second valve rod 1303 through the elastic column 1302, the long tube 12 is connected with the inner shell 11 through the rubber sleeve 19, the lower valve seat 4 is provided with a mounting assembly 20, and the installation opening of the safety valve is small in the oil tank due to the long structure of the whole long tube 12 and the lower valve rod 12, in order to achieve the improvement of the installation, the relevant structure can be achieved by the mounting assembly 20, the long tube 12 is folded close to the central axis of the safety valve, and the second valve rod 1303 is also folded synchronously, the structure is convenient, and then the folded structure is folded into the straight line structure through the installation opening of the long tube 12 and the whole valve rod 12 is designed to be reasonably opened through the installation structure.
As shown in fig. 1 and 8, in some embodiments, the flange panel 33 is mounted on the peripheral side of the lower valve seat 4, the mounting assembly 20 includes an adjusting screw 2001 in threaded connection with the flange panel 33, the adjusting screw 2001 is locked by a nut and a gasket, one end of the adjusting screw 2001 is rotatably connected with a first mounting rod 2002, a second mounting rod 2003 is hinged on the first mounting rod 2002, a third mounting rod 2004 is hinged on the second mounting rod 2003, the third mounting rod 2004 is mounted on the long tube 12, a fixing block 2005 is mounted on the outer side of the inner shell 11, a fourth mounting rod 2006 is mounted on the long tube 12, the fourth mounting rod 2006 is hinged with the fixing block 2005, as shown in fig. 1, in the unfolded state of the long tube 12, if folding is required, the locking of the adjusting screw 2001 by the nut and the gasket is released, the adjusting screw 2001 is rotated to shift the adjusting screw 2001, the first mounting rod 2002 is pulled to move, the swinging point of the long tube 12 is the hinge point of the fourth mounting rod 2006 and the fixing block 2005, the second mounting rod 2003 is rotated and pulls the third mounting rod 2004 to move, and finally the long tube 12 is pulled, and the long tube 12 moves towards the inside of the folding block 2001, wherein the folding direction is closed 9 in the folding process.
Example two
As shown in fig. 2 and fig. 6, in the second embodiment of the present application, the valve core assembly 3 includes a valve core block 301, an inner leg 302, a pull rod 303 and a supporting spring 304, where the inner leg 302 is in threaded connection with the upper valve seat 1, one end of the pull rod 303 is in sliding fit with the inner leg 302, the other end of the pull rod 303 is connected to the valve core block 301, the supporting spring 304 is sleeved on the pull rod 303, in the exhaust process, the pressure in the oil tank pushes the valve core block 301 to move, at this time, the supporting spring 304 is shortened, the pull rod 303 moves, the valve core block 301 moves upwards to release the blocking of the valve core groove 5, and the exhaust pressure reducing operation can be smoothly realized.
As shown in fig. 2 and 6, in the second embodiment, in order to realize the leak protection process, external air can enter the oil tank, the inner leg 302 and the pull rod 303 are hollow penetrating structures, the valve core block 301 is provided with a penetrating hole 305 communicated with the pull rod 303, the end of the upper valve seat 1 is in threaded connection with a housing 21 covering the end opening of the upper valve seat 1, the housing 21 is provided with an emergency check valve 34, the interior of the housing 21 is matched with the valve core assembly 3, the central tube 6, the inner shell 11 and the long tube 12, so that the communication with the interior of the oil tank can be realized, but the emergency check valve 34 is in one-way air inlet, when the interior of the oil tank is in a negative pressure condition, the external air cannot enter the oil tank through the position of the valve core assembly 3, and at this time, the internal air can be supplemented into the oil tank by using a tight check valve to maintain the pressure in the oil tank, and the air circulation is assisted by the valve core assembly 3, so that the original integral functions are not affected.
Example III
As shown in fig. 1-3, fig. 7 and fig. 8, in the third embodiment of the present application, two arc plates 22 are installed at the bottom of the lower valve seat 4, the inner diameter and the outer diameter of the arc plates 22 decrease gradually from top to bottom, a bearing plate 23 located in the enclosing area of the two arc plates 22 is installed on the inner plugging block 9, an gathering cavity is formed in the enclosing area of the two arc plates 22, and the bearing plate 23 is designed to have a larger contact area with the fuel after the fuel tank is dumped, and the design of the gathering cavity is combined again, so that the fuel is helpful to press and push the bearing plate 23.
As shown in fig. 2 and 7, in the third embodiment, two positioning blocks 24 are installed on the outer peripheral side of the inner casing 11, a plunger 25 is installed on the outer side of the arc plate 22, one end of the plunger 25 is inserted into the cavity of the positioning block 24, a return spring 26 is connected between the end of the plunger 25 located in the cavity of the positioning block 24 and the positioning block 24, a limit ring 27 is slidably installed at the bottom of the lower valve seat 4, the inner peripheral side of the limit ring 27 is in a conical surface structure and is attached to the outer peripheral sides of the two arc plates 22, the arc plates 22 are pulled away from each other by the return spring 26 when the safety valve is normally used, a path for gas circulation between the arc plates 22 and the pressure-bearing plate 23 is ensured, after the oil tank is poured, the limit ring 27 is retracted into the lower valve seat 4, the two arc plates 22 are pushed to be close to each other under the cooperation of the conical surface in the process, the pressure-bearing plate 23 is attached to the inner side of the two arc plates 22 and is kept stable under the pressure of the fuel, and the stability of the pressure-bearing plate 23 determines the stability of the inner block 9, and the aim of improving the tightness of the contact position between the inner block 9 and the lower valve seat 4.
As shown in fig. 3, in the third embodiment, the valve port of the lower valve seat 4 is configured with a cone opening 28, the end of the inner block 9 is configured with a cone head 29, a sealing ring 30 is embedded in the outer peripheral side of the cone head 29, after the inner block 9 contacts with the valve port, the sealing ring 30 is pressed under the cooperation of the cone head 29 and the cone opening 28, the sealing performance is improved by the cone structures in contact with each other, and the sealing of the contact position is further improved under the cooperation of the sealing ring 30.
As shown in fig. 3, in the third embodiment, the mounting hole 31 is formed to penetrate the outer peripheral side of the center tube 6, the connecting plate 32 penetrating the mounting hole 31 is slidably mounted in the center tube 6, the inner block 9 is mounted on the connecting plate 32, the actuator rod 14 is mounted on the connecting plate 32, based on the above structure, the connection between the inner block 9 and the center tube 6 is realized, and how the actuator rod 14 is connected inside the center tube 6 and with the inner block 9 is also realized.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An automotive fuel tank safety valve comprising: an upper valve seat (1), wherein an exhaust pipe head (2) is arranged on the outer periphery side of the upper valve seat (1), and a valve core assembly (3) is arranged in the upper valve seat (1);
the valve comprises a lower valve seat (4), wherein the lower valve seat (4) is connected with an upper valve seat (1) through bolts, a valve core groove (5) is formed in the lower valve seat (4), the lower valve seat (4) is communicated with the upper valve seat (1) through the valve core groove (5), and a valve core block (301) of the valve core assembly (3) is positioned in the valve core groove (5) in a normal state of the valve core assembly (3);
characterized by further comprising:
the central tube (6) is coaxially fixed in the lower valve seat (4), a containing shell (7) is fixed on the outer periphery side of the central tube (6), an inner blocking block (9) is arranged in the containing shell (7) through a connecting spring (8), and an exhaust channel (10) is formed between the inner blocking block (9) and a valve port of the lower valve seat (4);
the inner shell (11) is installed at one end of the central tube (6) in a communicating manner, at least two long tubes (12) are installed on the outer periphery side of the inner shell (11), an inner valve rod (13) for plugging the end part of the long tube (12) is installed in the long tube (12), one end of the inner valve rod (13) is located in the inner shell (11), an actuating rod (14) which enters the inner shell (11) through the central tube (6) is installed on the inner plugging block (9), the actuating rod (14) is connected with the inner valve rod (13), and when the inner plugging block (9) is close to a valve port of the lower valve seat (4), the inner valve rod (13) is driven to slide along the axis of the long tube (12) through the actuating rod (14) so as to release the plugging of the end part of the long tube (12).
2. The automobile fuel tank safety valve according to claim 1, wherein the actuating rod (14) is arranged at one end inside the inner shell (11), the actuating block (15) is arranged at one end inside the inner shell (11), the guide pillar (16) is arranged on the actuating block (15), the linkage block (17) is arranged at one end inside the inner shell (11) of the inner valve rod (13), the guide hole (18) is formed in the linkage block (17), and the guide pillar (16) is tangential to the guide hole (18).
3. The automobile fuel tank safety valve according to claim 2, wherein the inner valve rod (13) comprises a first valve rod (1301), an elastic column (1302) and a second valve rod (1303), one end of the first valve rod (1301) is connected with the linkage block (17), the other end of the first valve rod (1301) is connected with the second valve rod (1303) through the elastic column (1302), the long tube (12) is connected with the inner shell (11) through a rubber sleeve (19), and the lower valve seat (4) is provided with a mounting assembly (20) for adjusting the inclination angle of the long tube (12) through the mounting assembly (20).
4. A car oil tank relief valve according to claim 3, characterized in that the flange panel (33) is installed on the periphery of the lower valve seat (4), the mounting assembly (20) comprises an adjusting screw (2001) in threaded connection with the flange panel (33), one end of the adjusting screw (2001) is rotatably connected with a first mounting rod (2002), a second mounting rod (2003) is hinged on the first mounting rod (2002), a third mounting rod (2004) is hinged on the second mounting rod (2003), the third mounting rod (2004) is installed on the long tube (12), a fixed block (2005) is installed on the outer side of the inner shell (11), a fourth mounting rod (2006) is installed on the long tube (12), and the fourth mounting rod (2006) is hinged with the fixed block (2005).
5. The automobile fuel tank safety valve according to claim 1, wherein the valve core assembly (3) comprises a valve core block (301), an inner column (302), a pull rod (303) and a supporting spring (304), the inner column (302) is in threaded connection with the upper valve seat (1), one end of the pull rod (303) is in sliding fit with the inner column (302), the other end of the pull rod (303) is connected to the valve core block (301), and the supporting spring (304) is sleeved on the pull rod (303).
6. The automobile fuel tank safety valve according to claim 5, wherein the inner leg (302) and the pull rod (303) are hollow penetrating structures, a penetrating hole (305) communicated with the pull rod (303) is formed in the valve core block (301), the end part of the upper valve seat (1) is in threaded connection with a housing (21) covering the end opening of the upper valve seat (1), and an emergency check valve (34) is mounted on the housing (21).
7. The automobile fuel tank safety valve according to claim 1, wherein two arc plates (22) are installed at the bottom of the lower valve seat (4), the inner diameter and the outer diameter of the arc plates (22) are gradually reduced from top to bottom, and a bearing plate (23) positioned in the enclosing area of the two arc plates (22) is installed on the inner plugging block (9).
8. The automobile oil tank safety valve according to claim 7, wherein two positioning blocks (24) are installed on the outer periphery side of the inner shell (11), a plug rod (25) is installed on the outer side of the arc plate (22), one end of the plug rod (25) is inserted into a cavity of the positioning block (24), a return spring (26) is connected between the end of the plug rod (25) located in the cavity of the positioning block (24) and the positioning block (24), a limiting ring (27) is slidably installed on the bottom of the lower valve seat (4), and the inner periphery side of the limiting ring (27) is in a conical surface structure and is attached to the outer periphery sides of the two arc plates (22).
9. The automobile fuel tank safety valve according to claim 1, wherein the valve port of the lower valve seat (4) is provided with a cone opening (28), the end part of the inner blocking block (9) is provided with a frustum head (29), and a sealing ring (30) is embedded in the peripheral side of the frustum head (29).
10. The automobile fuel tank safety valve according to claim 1, wherein the center tube (6) is constructed with a mounting hole (31) penetrating through the outer peripheral side thereof, a connecting plate (32) penetrating through the mounting hole (31) is slidably mounted in the center tube (6), the inner block (9) is mounted on the connecting plate (32), and the actuator rod (14) is mounted on the connecting plate (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311687197.6A CN117386860A (en) | 2023-12-11 | 2023-12-11 | Safety valve for automobile oil tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311687197.6A CN117386860A (en) | 2023-12-11 | 2023-12-11 | Safety valve for automobile oil tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117386860A true CN117386860A (en) | 2024-01-12 |
Family
ID=89466976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311687197.6A Pending CN117386860A (en) | 2023-12-11 | 2023-12-11 | Safety valve for automobile oil tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117386860A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990009517A (en) * | 1997-07-10 | 1999-02-05 | 박병재 | Vent Valves for Automotive Fuel Tanks |
| CN201604517U (en) * | 2009-10-19 | 2010-10-13 | 成都汇普电器有限责任公司 | Fuel pump assembly for metal bracket |
| DE102011005207A1 (en) * | 2011-03-07 | 2012-09-13 | Alfmeier Präzision AG Baugruppen und Systemlösungen | Vent valve for fuel tank of motor vehicle, has locking unit, which is pivotable on float gauge and is connected with positive- and non-positive connection effective in axial direction |
| KR20170061856A (en) * | 2015-11-27 | 2017-06-07 | 현대자동차주식회사 | Air vent valve of fuel tank |
-
2023
- 2023-12-11 CN CN202311687197.6A patent/CN117386860A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990009517A (en) * | 1997-07-10 | 1999-02-05 | 박병재 | Vent Valves for Automotive Fuel Tanks |
| CN201604517U (en) * | 2009-10-19 | 2010-10-13 | 成都汇普电器有限责任公司 | Fuel pump assembly for metal bracket |
| DE102011005207A1 (en) * | 2011-03-07 | 2012-09-13 | Alfmeier Präzision AG Baugruppen und Systemlösungen | Vent valve for fuel tank of motor vehicle, has locking unit, which is pivotable on float gauge and is connected with positive- and non-positive connection effective in axial direction |
| KR20170061856A (en) * | 2015-11-27 | 2017-06-07 | 현대자동차주식회사 | Air vent valve of fuel tank |
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