CN108799510B - Rotary assembly type carbon tank stop valve - Google Patents
Rotary assembly type carbon tank stop valve Download PDFInfo
- Publication number
- CN108799510B CN108799510B CN201810894984.0A CN201810894984A CN108799510B CN 108799510 B CN108799510 B CN 108799510B CN 201810894984 A CN201810894984 A CN 201810894984A CN 108799510 B CN108799510 B CN 108799510B
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- China
- Prior art keywords
- end cover
- valve
- carbon tank
- valve body
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 44
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 238000007789 sealing Methods 0.000 claims abstract description 43
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 238000004804 winding Methods 0.000 claims description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 8
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 abstract description 16
- 230000008020 evaporation Effects 0.000 abstract description 16
- 238000009434 installation Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000000446 fuel Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 7
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012827 research and development Methods 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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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
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/029—Electromagnetically actuated valves
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
- F02M2025/0845—Electromagnetic valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention relates to a rotary assembly type carbon tank stop valve, which comprises a valve body, wherein an electric joint is arranged on the valve body, and the rotary assembly type carbon tank stop valve comprises: the end cover is installed to the lower extreme of valve body, and the upper and lower both ends of end cover all are provided with seal assembly, and seal assembly of end cover upper end is first sealing washer, and seal assembly of end cover lower extreme is the second sealing washer, is provided with reset spring in the end cover, and electric connector's below is provided with prevents changeing the card end, and it has solenoid subassembly to wrap to mould in the valve body, is connected with valve head subassembly on the solenoid subassembly, and valve head subassembly contacts with reset spring, and solenoid subassembly is coaxial assembly with valve head subassembly, reset spring, end cover, has the valve body overcoat to establish and is connected with the carbon tank connecting piece. Therefore, the evaporation system can form an independent closed system, whether a leakage point exists in the whole evaporation system or not is monitored through OBD, and the environmental protection standard and the use safety are improved. An independent carbon tank connecting piece is arranged, so that the stability of installation and the air tightness of practical use are ensured.
Description
Technical Field
The invention relates to a stop valve, in particular to a rotary assembly type carbon tank stop valve.
Background
With the vigorous development of the modern automobile industry, the control of problems such as automobile exhaust emission, fuel evaporation leakage pollution and the like has become one of the important points in the automobile research and development process. Based on the published 'GB 18352.6-2016 light vehicle pollutant emission limit and measurement method (Chinese sixth stage)', the quantity of gasoline allowed to volatilize into the atmosphere of a vehicle needs to be controlled more strictly, and in a vehicle fuel evaporation emission control system (EVAP), the integrity of the whole evaporation system except a pipeline between a carbon tank electromagnetic valve and an air inlet manifold needs to be monitored by an OBD system, so that fuel vapor leakage into the atmosphere caused by pipeline breakage and the like is prevented. According to the monitoring mode of the OBD system, the whole evaporation system is disconnected from the outside of the system during monitoring, so that the system becomes an independent closed system, and whether the whole evaporation system leaks or not is judged by monitoring the change of the internal pressure of the closed system within a certain time.
In view of the above-mentioned drawbacks, the present inventors have actively studied and innovated to create a rotary assembled canister stop valve, which has a more industrial utility value.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a rotary assembly type carbon tank stop valve.
The invention relates to a rotary assembly type carbon tank stop valve, which comprises a valve body, wherein an electric joint is arranged on the valve body, and the rotary assembly type carbon tank stop valve comprises: the end cover is installed to the lower extreme of valve body, the upper and lower both ends of end cover all are provided with seal assembly, seal assembly of end cover upper end is first sealing washer, seal assembly of end cover lower extreme is the second sealing washer, be provided with reset spring in the end cover, electric joint's below is provided with prevents changeing the card end, it has solenoid subassembly to wrap in the valve body to mould, be connected with the valve head subassembly on the solenoid subassembly, the valve head subassembly contacts with reset spring, solenoid subassembly and valve head subassembly, reset spring, end cover are coaxial assembly, have the valve body overcoat to be connected with the carbon tank connecting piece.
Further, the above-mentioned rotary assembled carbon tank stop valve, wherein the electromagnetic coil assembly is composed of a spool, a copper coil, a left conductive contact pin, a right conductive contact pin, a yoke lower cover plate, a yoke sleeve and a yoke upper cover plate,
The lower cover plate of the yoke is coated on the winding shaft, the copper coil is wound on the winding shaft, two ends of the copper coil are respectively welded with the left conductive contact pin and the right conductive contact pin to form an electromagnetic coil body,
The electromagnetic coil body is sleeved into the yoke sleeve, the yoke sleeve is connected with the lower cover plate of the yoke in a riveting way,
The upper cover plate of the yoke is sleeved on the top of the winding shaft and riveted with the yoke sleeve,
And an iron core assembly is arranged in the winding shaft.
Still further, the above-mentioned rotary assembled carbon tank stop valve, wherein, the iron core subassembly is including moving iron core, quiet iron core constitution, it is equipped with the buffer rubber piece to move the iron core top to pack into the spool, quiet iron core interference fit is impressed in the spool, makes to move the iron core lock in the spool.
Further, in the above rotary assembled carbon canister stop valve, the outer periphery of the bottom of the spool is provided with an outer annular wall of the spool.
Still further, the rotary assembled carbon tank stop valve comprises a valve rod, wherein the valve head assembly comprises a rubber sealing gasket sleeved on the valve rod in an interference fit mode, a supporting sheet is distributed at one end of the valve rod, and the supporting sheet is in contact with the rubber sealing gasket.
Further, the end cover comprises a first sealing ring groove, a second sealing ring groove, a rotary clamping groove, a spring support, an air outlet, an air inlet, a sealing port and a welding ring groove,
The first sealing ring is arranged at the upper end of the end cover, the second sealing ring groove is arranged at the lower end of the end cover,
The first sealing ring is arranged in the first sealing ring groove, and the second sealing ring is arranged in the second sealing ring groove;
the lower end of the end cover is also provided with a rotary clamping groove,
A spring support is arranged in the lower end of the end cover,
An air outlet is arranged on the end cover,
An air inlet is arranged at the bottom of the end cover,
A sealing port is arranged in the end cover,
And a welding ring groove is formed in the top of the end cover.
Further, the rotary assembled carbon tank stop valve comprises a body, an inner cavity is arranged in the body,
An inner clamping step is arranged at the bottom of the inner cavity,
One side at body top is provided with outside screens double step, rotatory spacing step.
Still further, the rotary assembled carbon tank stop valve is further provided, wherein the spring support is a herringbone bearing support.
By means of the scheme, the invention has at least the following advantages:
1. The evaporation system can be made to form an independent closed system, whether the whole evaporation system has leakage points or not is monitored through OBD, and the environmental protection standard and the use safety are improved.
2. Can use with the matching of current commonly used carbon tank connecting piece to adapt to the different assorted carbon tank connection demands of different customers, need not to pass through other modes secondary connection such as pipeline again, guarantee the stability and the gas tightness of in-service use of installation.
3. The on-off switching is sensitive during the working period, and the OBD diagnosis control requirement during the daily form of the vehicle is met.
4. The whole structure is simple, and the assembly, the use and the maintenance are easy.
The foregoing description is only an overview of the present invention, and is intended to provide a better understanding of the present invention, as it is embodied in the following description, with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
Fig. 1 is a schematic view of the overall structure of a valve body.
Fig. 2 is a schematic distribution diagram of the anti-spin end.
Fig. 3 is a schematic view of a semi-sectional structure of a valve body.
Fig. 4 is a schematic view of the overall structure of the electromagnetic coil assembly.
Fig. 5 is a schematic diagram of a semi-sectional structure of a solenoid assembly.
Fig. 6 is a schematic view of the overall structure of the valve head assembly.
Fig. 7 is a schematic cross-sectional view of the valve head assembly.
Fig. 8 is a schematic structural view of the end cap.
Fig. 9 is a schematic view of the structure of the spring support.
Fig. 10 is a schematic view of a semi-sectional structure of an end cap.
Fig. 11 is a schematic view of the overall structure of the carbon canister connector.
FIG. 12 is a schematic illustration of a semi-sectional structure of a carbon canister connection.
FIG. 13 is a schematic illustration of the initial position of the valve body in combination with the canister connector.
FIG. 14 is a schematic view of a locking position of the valve body in combination with the canister connector.
Fig. 15 is a schematic view of the overall structure of the valve body combined with the canister connector.
FIG. 16 is a schematic illustration of a semi-sectional structure of a valve body in combination with a carbon canister connection.
Fig. 17 is a schematic diagram of the combination of the valve body and the canister.
Fig. 18 is a schematic diagram of connection of the anti-spin card end of fig. 17.
Fig. 19 is a schematic view of the connection of the inner detent steps of fig. 17.
FIG. 20 is a schematic diagram of the intake airflow profile during a power-off condition. (dotted arrow is intake air flow)
FIG. 21 is a schematic of the present invention in a semi-cut configuration during an energized condition.
Fig. 22 is a schematic diagram of an application of the present invention in a fuel vapor emission control system. (the dotted line frame is the fuel evaporation system)
The meaning of each reference numeral in the figures is as follows.
1 Valve body 2 carbon tank connecting piece
First sealing ring of 3 end cover 4
5 Second sealing ring 6 electromagnetic coil assembly
7 Valve head assembly 8 return spring
201 Inner cavity 202 inner clamping step
203 External clamping double-step 204 rotary limiting step
301 First seal groove 302 second seal groove
303 Rotary clamping groove 304 spring support
305 Air outlet 306 air inlet
307 Sealing port 308 welding ring groove
601 Spool 602 copper coil
603 Main conductive pin 604 auxiliary conductive pin
605 Yoke lower cover plate 606 yoke sleeve
607 Yoke upper cover plate 608 movable iron core
609 Cushion rubber block 610 static iron core
611 Spool outer annular wall 701 valve stem
702 Rubber gasket 801 intake air flow
901 Stop valve 902 carbon tank
903 Air filter 904 carbon tank electromagnetic valve
905 Oil tank 101 electric connector
102 Anti-rotation clamping end
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
A rotary assembled carbon canister stop valve as in fig. 1 to 22, comprising a valve body 1, wherein an electrical connector 101 is mounted on the valve body 1, which is characterized in that: the lower end of the valve body 1 adopted by the invention is provided with an end cover 3. Meanwhile, considering that the following carbon tank connecting piece 2 has better tightness with the valve body 1 after being installed, the upper end and the lower end of the end cover 3 are provided with sealing assemblies. Specifically, the sealing component at the upper end of the end cover 3 is a first sealing ring 4, and the sealing component at the lower end of the end cover 3 is a second sealing ring 5. A return spring 8 is provided in the end cap 3. An anti-rotation snap end 102 is provided under the electrical connector 101 for anti-rotation requirements during subsequent assembly and installation. And, the valve body 1 is internally coated with a solenoid coil assembly 6, and the solenoid coil assembly 6 is connected with a valve head assembly 7 which is contacted with a return spring 8. In order to ensure smooth operation of the valve head assembly 7 and the return spring 8, the electromagnetic coil assembly 6 is coaxially assembled with the valve head assembly 7, the return spring 8 and the end cover 3. Furthermore, in order to meet the requirements of carbon tank layout connection in various vehicle systems, a carbon tank connecting piece 2 is sleeved outside the valve body 1.
In connection with a preferred embodiment of the present invention, the electromagnetic coil assembly 6 is formed by a bobbin 601, a copper coil 602, a left conductive pin 603, a right conductive pin 604, a yoke lower cover 605, a yoke sleeve 606, and a yoke upper cover 607.
Viewed in connection with the actual assembly: the present invention has the yoke lower cover plate 605 over-molded on the bobbin 601. Meanwhile, the copper coil 602 is neatly wound on the bobbin 601. Two ends of the copper coil 602 are respectively welded with a left conductive pin 603 and a right conductive pin 604 to form an electromagnetic coil body. During assembly, the solenoid body is sleeved into the yoke sleeve 606, and the yoke sleeve 606 is riveted with the yoke lower cover plate 605. Then, the yoke upper cover plate 607 is fitted over the top of the bobbin 601 and riveted with the yoke sleeve 606. Further, a core assembly is installed in the bobbin 601, and a bobbin outer circumferential wall 611 is provided at the bottom periphery of the bobbin 601. Thus, the electromagnetic coil assembly 6 is formed after assembly.
Further, the iron core assembly used in the present invention comprises a movable iron core 608 and a static iron core 610. A buffer rubber block 609 is embedded at the top of the movable iron core 608 and is freely installed in the spool 601. Will be
The static iron core 610 is pressed into the winding shaft 601 in an interference fit manner, so that the movable iron core 608 is locked in the winding shaft 601, and the movable iron core 608 can be prevented from falling out of the winding shaft 601 in daily use.
In order to cooperate with the normal operation of the electromagnetic coil assembly 6 and the return spring 8, the adopted valve head assembly comprises a valve rod 701, and a rubber sealing gasket 702 is sleeved on the valve rod 701 in an interference fit manner. In addition, in order to facilitate the assembly attaching effect of the rubber packing 702, a supporting piece is distributed at one end of the valve rod 701, and the supporting piece is in contact with the rubber packing 702.
Still further, the end cap 3 used in the present invention comprises a first seal ring groove 301, a second seal ring groove 302, a rotation clamping groove 303, a spring support 304, an air outlet 305, an air inlet 306, a seal port 307, and a welding ring groove 308. Specifically, the first seal ring 4 is disposed at the upper end of the end cover 3, the second seal ring groove 302 is disposed at the lower end of the end cover 3, the first seal ring 4 is mounted in the first seal ring groove 301, and the second seal ring 5 is mounted in the second seal ring groove 302. Meanwhile, in order to realize a more stable assembly with the carbon tank connecting piece 2, a rotary clamping groove 303 is further formed at the lower end of the end cover 3. Also, in consideration of the normal accommodation of the return spring 8, a spring holder 304 is provided in the lower end of the end cap 3. In order to effectively bear the return spring 8, the bottom is guaranteed to have a better support and not to be separated during the use, and the adopted spring support 304 is a herringbone bearing support.
Furthermore, in order to achieve the necessary flow direction planning, an air outlet 305 is provided on the end cover 3, and an air inlet 306 is provided at the bottom of the end cover 3. During actual use, the air outlet 305 communicates with the canister portion and the air inlet 305 communicates with the air filter. In order to disconnect the fuel vaporization system from the outside atmosphere during OBD diagnostics, a seal 307 is provided in the end cap 3. Furthermore, the present invention also provides a weld ring groove 308 on top of the end cap 3, in view of the need for subsequent assembly positioning.
During actual assembly, the valve stem 701 is inserted through the stationary core 610 and then matingly into the blind bore of the plunger 608. Then, the return spring 8 is installed in the end cover 3, and the outer annular wall 611 of the spool exposed from the lower end of the valve body is sleeved in the welding annular groove 308 at the upper part of the end cover, so that the two are coaxially assembled and welded. At this time, the return spring 8 is in an initial compressed state, and the movable iron core 608 is pushed against the upper portion of the inner cavity of the spool 601 through the valve rod 701 so as not to freely move, thus completing the assembly.
Meanwhile, in order to avoid leakage of fuel vapor, the outer annular wall 611 of the spool is welded with the welding ring groove 308 at the upper part of the end cover in a matching way. In this way, a complete closed chamber is created so that the fuel vapor in the entire vaporization system does not pass through the part gap in the valve body. Thus, leakage of fuel vapor into the atmosphere from the gaps between the left conductive pin 603, the right conductive pin 604, and the valve body can be avoided.
In order to accommodate the common fuel vaporization system layout, the carbon canister connector 2 employed includes a body with an interior cavity 201 disposed therein. Meanwhile, an inner click step 202 is provided at the bottom of the inner cavity 201. And, cooperate the linking of anti-rotation card end 102, one side at body top is provided with outside screens double step 203, rotatory spacing step 204.
In connection with the actual assembly, the valve body 1 is inserted into the inner cavity 201 of the canister connector 2 and rotated to the locking position. At this time, the first seal ring 4 contacts the inner wall of the inner cavity 201 to form a first seal. The second seal ring 5 contacts the inner wall of the inner cavity 201 to form a second seal. Meanwhile, the anti-rotation blocking end 102 on the shut-off valve 901 passes through the outer blocking double step 203 on the canister connector 2 as it rotates, and stops rotating after contacting the rotation limiting step 204. During this time, the anti-rotation blocking end 102 is located between the outer blocking double step 203 and the rotation limiting step 204, so that the stop valve 901 cannot be reversed. The inner locking step 202 at the bottom of the inner cavity of the canister connector 2 also slides into the rotary locking groove 303 on the end cap 3 of the stop valve 901 along with rotation, so that the stop valve 901 is limited in the up-down direction and cannot be pulled out from the inner cavity 201 of the canister connector 2. So far, the stop valve 901 is firmly matched and connected with the carbon tank connecting piece.
The working principle of the invention is described as follows:
working condition one: and (5) under the power-off working condition.
As shown in fig. 20, in the case of power failure, the electromagnetic coil assembly 6 is not energized, and no electromagnetic force is generated. At this time, the valve head assembly 7 and the plunger 608 are both pushed against the upper portion of the inner cavity of the spool 601 by the initial compression force of the return spring 8. Thus, clean gas from the air filtration flows through the gas inlet 306, the seal 307, the gas outlet 305, forming an inlet gas flow 801, and finally into the canister.
Working condition II: and (5) electrifying working conditions.
As shown in fig. 21, upon energization, the electromagnetic coil assembly 6 is energized, and the generated electromagnetic force is sufficient to overcome the compression spring force of the return spring 8. Thus, the electromagnetic force attracts the plunger 608 downward and drives the valve head assembly 7 downward. Finally, the rubber gasket 702 on the valve head assembly 7 is in abutting contact with the sealing port 307 on the end cap 3. The electromagnetic force at this time is still greater than the spring force generated by the further compression of the return spring 8, which is greater than the initial compression state, so that the rubber packing 702 is always in close contact with the seal port 307. Thus, the inlet 306 is completely isolated from the outlet 305 and clean gas from the air filter cannot enter the canister.
Further, when the power is again turned off, the electromagnetic force cannot be generated by the electromagnetic coil assembly 6, and the compression spring force generated by the return spring 8 pushes the valve head assembly 7 and the plunger 608 upward. At this time, the rubber gasket 702 is separated from the seal port 307, the air inlet 306 and the air outlet 305 are again communicated, and the intake air flow 801 is again formed.
Fig. 22 is a schematic diagram of the application of the present invention to an automotive fuel evaporative emission control system, the system comprising: fuel tank 905, canister 902, canister solenoid valve 904, engine, air filtration, etc. The carbon tank stop valve 901 is installed between the carbon tank 902 and the air filter 903, and when the OBD is not monitored on the whole evaporation system, the carbon tank stop valve 901 is in a power-off open state, so that clean air flowing through the air filter 903 is ensured to enter the carbon tank 902 to wash the carbon tank in time. When the OBD needs to monitor the entire evaporation system, the canister shut-off valve 901 is powered off, disconnecting the canister 902 from the air filter 903, and the canister solenoid valve 904 is closed synchronously. Thus, the whole evaporation system forms a separate closed system, and the OBD can monitor whether a leakage point exists in the whole evaporation system.
As can be seen from the above text expressions and the accompanying drawings, the invention has the following advantages:
1. The evaporation system can be made to form an independent closed system, whether the whole evaporation system has leakage points or not is monitored through OBD, and the environmental protection standard and the use safety are improved.
2. Can use with the matching of current commonly used carbon tank connecting piece to adapt to the different assorted carbon tank connection demands of different customers, need not to pass through other modes secondary connection such as pipeline again, guarantee the stability and the gas tightness of in-service use of installation.
3. The switching of the switch-off and the switch-on is sensitive during the working period, and the use control requirement of the carbon tank during the daily form of the vehicle is met.
4. The whole structure is simple, and the assembly, the use and the maintenance are easy.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and it should be noted that it is possible for those skilled in the art to make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.
Claims (1)
1. The utility model provides a rotatory assembled carbon tank stop valve, is including valve body (1), install electric joint (101), its characterized in that on valve body (1): the anti-rotation valve is characterized in that an end cover (3) is arranged at the lower end of the valve body (1), sealing assemblies are arranged at the upper end and the lower end of the end cover (3), the sealing assemblies at the upper end of the end cover (3) are first sealing rings (4), the sealing assemblies at the lower end of the end cover (3) are second sealing rings (5), a reset spring (8) is arranged in the end cover (3), an anti-rotation clamping end (102) is arranged below the electric joint (101), an electromagnetic coil assembly (6) is molded in the valve body (1), a valve head assembly (7) is connected onto the electromagnetic coil assembly (6), the valve head assembly (7) is in contact with the reset spring (8), the electromagnetic coil assembly (6) is coaxially assembled with the valve head assembly (7), the reset spring (8) and the end cover (3), and a carbon tank connecting piece (2) is sleeved outside the valve body (1).
The electromagnetic coil assembly (6) is formed by a winding shaft (601), a copper coil (602), a left conductive pin (603) and a right conductive pin (604), a yoke lower cover plate (605), a yoke sleeve (606) and a yoke upper cover plate (607), wherein the yoke lower cover plate (605) is coated on the winding shaft (601), the copper coil (602) is wound on the winding shaft (601), two ends of the copper coil (602) are respectively welded with the left conductive pin (603) and the right conductive pin (604) to form an electromagnetic coil body, the electromagnetic coil body is sleeved into the yoke sleeve (606) and is riveted with the yoke lower cover plate (605), the yoke upper cover plate (607) is sleeved at the top of the winding shaft (601) and is riveted with the yoke sleeve (606), an iron core assembly is arranged in the winding shaft (601) and comprises a movable iron core (608) and a static iron core (610), a buffer block (609) is embedded at the top of the movable iron core (608), the upper end of the movable iron core (608) is respectively welded with the left conductive pin (603) and the right conductive pin (604) to form an electromagnetic coil body, the upper cover plate (605) is sleeved into the winding shaft (601) and is riveted with the yoke sleeve (606), and the inner periphery of the winding shaft (601) is pressed into the winding shaft (601);
The valve head assembly comprises a valve rod (701), a rubber sealing gasket (702) is sleeved on the valve rod (701) in an interference fit manner, a supporting sheet is distributed at one end of the valve rod (701), and the supporting sheet is in contact with the rubber sealing gasket (702); the end cover (3) comprises a first sealing ring groove (301), a second sealing ring groove (302), a rotary clamping groove (303), a spring support (304), an air outlet (305), an air inlet (306), a sealing port (307) and a welding ring groove (308), wherein the first sealing ring (4) is arranged at the upper end of the end cover (3), the second sealing ring groove (302) is arranged at the lower end of the end cover (3), the first sealing ring (4) is arranged in the first sealing ring groove (301), and the second sealing ring (5) is arranged in the second sealing ring groove (302); the lower end of the end cover (3) is also provided with a rotary clamping groove (303), a spring support (304) is arranged in the lower end of the end cover (3), an air outlet (305) is formed in the end cover (3), an air inlet (306) is formed in the bottom of the end cover (3), a sealing port (307) is formed in the end cover (3), and a welding ring groove (308) is formed in the top of the end cover (3);
The carbon tank connecting piece (2) comprises a body, an inner cavity (201) is arranged in the body, an inner clamping step (202) is arranged at the bottom of the inner cavity (201), and an outer clamping double step (203) and a rotation limiting step (204) are arranged on one side of the top of the body; the spring support (304) is a herringbone bearing support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810894984.0A CN108799510B (en) | 2018-08-08 | 2018-08-08 | Rotary assembly type carbon tank stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810894984.0A CN108799510B (en) | 2018-08-08 | 2018-08-08 | Rotary assembly type carbon tank stop valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108799510A CN108799510A (en) | 2018-11-13 |
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| CN112555063B (en) * | 2019-09-25 | 2022-03-11 | 重庆长安汽车股份有限公司 | Carbon tank system mounting structure |
| CN111075952B (en) * | 2019-12-26 | 2021-11-02 | 奇瑞汽车股份有限公司 | Carbon tank solenoid valve |
| CN113790300A (en) * | 2021-10-18 | 2021-12-14 | 微赛技术(北京)有限公司 | Pneumatic electromagnetic valve |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5333836A (en) * | 1992-09-09 | 1994-08-02 | Nisshinbo Industries Inc. | Solenoid valve |
| CN208703131U (en) * | 2018-08-08 | 2019-04-05 | 苏州恩都法汽车系统有限公司 | Rotate assembled canister shut-off valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4966189A (en) * | 1989-10-24 | 1990-10-30 | Stant Inc. | Tank valve mounting assembly |
| JPH11248022A (en) * | 1998-02-27 | 1999-09-14 | Techno Excel Co Ltd | Solenoid yoke |
| WO2000077427A2 (en) * | 1999-06-14 | 2000-12-21 | Siemens Canada Limited | Canister purge valve for high regeneration airflow |
| JP3812462B2 (en) * | 2002-03-08 | 2006-08-23 | 日産自動車株式会社 | Canister vent valve mounting structure |
| WO2015104813A1 (en) * | 2014-01-09 | 2015-07-16 | 三菱電機株式会社 | Insertion structure, canister, and canister vent solenoid valve |
| KR101888485B1 (en) * | 2016-09-22 | 2018-08-14 | (주)솔텍 | Noise Reduction Type Canister Close Solenoid Valve |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5333836A (en) * | 1992-09-09 | 1994-08-02 | Nisshinbo Industries Inc. | Solenoid valve |
| CN208703131U (en) * | 2018-08-08 | 2019-04-05 | 苏州恩都法汽车系统有限公司 | Rotate assembled canister shut-off valve |
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