技术领域technical field
本发明涉及一种用于汽车加油系统中的阀门，特别涉及一种加油控制阀。The invention relates to a valve used in an automobile refueling system, in particular to a refueling control valve.
背景技术Background technique
加油控制阀安装在燃油箱的顶壁上，传统的加油控制阀技术中，液位控制阀的上部设有排气口，加油控制阀内设有主浮子，燃油箱在加油时，燃油箱内的液面逐渐上升，液位控制阀内的主浮子也跟随液面上升，液面上部的气体通过液位控制阀上部的排气口排出，直至主浮子上端面将排气口堵住，油箱内部压力急剧上升而形成跳枪，燃油箱内的汽油在加油过程中产生浪涌，加油结束后，浪涌逐渐消失，燃油箱的液面下降，此时，主浮子会随着液面的下降而迅速下降，导致排气口突然可以大量排气，造成油箱压力不平衡，容易造成油箱内的汽油从排气口溢出，同时，主浮子下降不平稳。The refueling control valve is installed on the top wall of the fuel tank. In the traditional refueling control valve technology, the upper part of the liquid level control valve is provided with an exhaust port, and the refueling control valve is equipped with a main float. The liquid level of the liquid level rises gradually, and the main float in the liquid level control valve also rises with the liquid level. The gas on the upper part of the liquid level is discharged through the exhaust port on the upper part of the liquid level control valve until the upper end of the main float blocks the exhaust port. The internal pressure rises sharply to form a jump gun. The gasoline in the fuel tank generates a surge during refueling. After refueling, the surge gradually disappears, and the liquid level of the fuel tank drops. At this time, the main float will fall with the liquid level. However, the rapid drop will cause the exhaust port to suddenly exhaust a large amount of gas, causing the pressure of the fuel tank to be unbalanced, which will easily cause the gasoline in the fuel tank to overflow from the exhaust port. At the same time, the main float will not drop smoothly.
发明内容Contents of the invention
针对现有技术中的缺陷，本发明的目的在于解决现有技术中油箱压力不平衡的技术问题，提供一种加油控制阀，此控制阀结构简单，可防止燃油的泄露，油箱压力始终保持平衡。Aiming at the defects in the prior art, the purpose of the present invention is to solve the technical problem of unbalanced fuel tank pressure in the prior art, and provide a refueling control valve, which has a simple structure, can prevent fuel oil from leaking, and keeps the fuel tank pressure in balance all the time .
本发明的目的是这样实现的：一种加油控制阀，包括具有容纳腔一的阀体，所述阀体的顶部开有排气口，所述阀体的上部开有至少一个进油进气口，所述阀体的底部固连有底托，所述底托上排布有若干进油口，底托上侧支撑设置有具有容纳腔且底部具有开口的阀芯，底托上侧连接弹簧一端，所述弹簧的另一端与阀芯内壁的顶部连接，所述阀芯的顶部可滑动地连接有密封组件，所述密封组件的顶部可堵住排气口，密封组件的底部可抵触在阀芯的内壁顶部。The object of the present invention is achieved in the following way: a refueling control valve, comprising a valve body with an accommodating chamber 1, an exhaust port is opened on the top of the valve body, and at least one oil inlet and air intake port is opened on the upper part of the valve body. port, the bottom of the valve body is fixedly connected with a bottom bracket, and several oil inlets are arranged on the bottom bracket. One end of the spring, the other end of the spring is connected to the top of the inner wall of the valve core, the top of the valve core is slidably connected with a sealing assembly, the top of the sealing assembly can block the exhaust port, and the bottom of the sealing assembly can interfere on top of the inner wall of the spool.
本发明工作时，燃油箱加油时，燃油从底托上的进油口进入阀芯内，燃油未加满前，燃油蒸汽从进油进气口进入阀体后从排气口排出至碳罐以循环使用，当加油的高度没过进油进气口后，大量的燃油进入阀体内，密封组件的重力比阀芯小得多，密封组件先上浮，阀芯后上浮，密封组件相对阀芯滑动，密封组件的底部抵触在阀芯的内壁顶部时，密封组件将阀芯向上拉，密封组件堵住排气口，阀芯在密封组件拉力和燃油的作用下迅速向上，具有向上的惯性力的阀芯紧紧压在密封组件上，进一步提高密封组件的密封性；排气口被封住后，加油结束，油箱内的浪涌逐渐消失，阀体内的燃油液面逐渐降低，阀芯下降，密封组件仍然堵住排气口，当阀芯的内壁顶部与密封组件的底部相接触后，阀芯带动密封组件迅速下降，此时，液面的高度已经降至安全高度，实现排气口的迅速开启的同时确保油箱压力的平衡，不会导致漏油；从以上就可看出，本发明与现有技术相比，具有的技术效果为：本发明的结构简单且巧妙，通过简单的结构设计实现更好的密封性，当液面下降到安全高度时，排气口才会完全开启，开启速度快，防止漏油的同时，保持油箱压力的平衡，阀芯下降平稳；本发明可应用于汽车加油时控制加油量的工作中。When the present invention is working, when the fuel tank is refueled, the fuel enters the valve core from the oil inlet on the bottom support, before the fuel is filled up, the fuel vapor enters the valve body through the oil inlet and then is discharged from the exhaust port to the carbon tank For cyclic use, when the height of refueling is lower than the oil inlet and air inlet, a large amount of fuel enters the valve body, the gravity of the sealing assembly is much smaller than that of the valve core, the sealing assembly floats first, and the valve core floats later, and the sealing assembly is relative to the valve core. Sliding, when the bottom of the sealing assembly collides with the top of the inner wall of the spool, the sealing assembly pulls the spool upwards, the sealing assembly blocks the exhaust port, and the spool moves upward quickly under the action of the pulling force of the sealing assembly and fuel, with an upward inertial force The spool of the spool is tightly pressed on the sealing assembly to further improve the sealing performance of the sealing assembly; after the exhaust port is sealed, the refueling is over, the surge in the fuel tank gradually disappears, the fuel liquid level in the valve body gradually decreases, and the spool drops , the sealing component still blocks the exhaust port. When the top of the inner wall of the valve core contacts the bottom of the sealing component, the valve core drives the sealing component to drop rapidly. At this time, the liquid level has dropped to a safe height, realizing the exhaust port It can be seen from the above that, compared with the prior art, the technical effect of the present invention is: the structure of the present invention is simple and ingenious, through simple The structural design achieves better sealing. When the liquid level drops to a safe height, the exhaust port will be fully opened, and the opening speed is fast. While preventing oil leakage, the pressure of the fuel tank is kept balanced, and the valve core drops smoothly; the invention can be applied It is used in the work of controlling the amount of refueling when refueling the car.
为了进一步提高阀芯下降的平稳性，所述密封组件的中心开有开启孔，所述开启孔的直径为排气口的直径的1/4-1/2；此设计实现排气口的二级开启，具体的为，加油结束，油箱内的浪涌逐渐消失，阀体内的燃油液面逐渐降低，阀芯下降，阀芯离开小密封件的底部，此时，燃油蒸汽可以沿着开启孔少量排出，提高阀芯下降的平稳性。In order to further improve the stability of the valve core descending, an opening hole is opened in the center of the sealing assembly, and the diameter of the opening hole is 1/4-1/2 of the diameter of the exhaust port; this design realizes two Specifically, after refueling, the surge in the fuel tank gradually disappears, the fuel level in the valve body gradually decreases, the spool drops, and the spool leaves the bottom of the small seal. At this time, the fuel vapor can flow along the opening hole. A small amount of discharge improves the stability of the spool drop.
为了进一步提高本发明的密封性，密封组件包括小密封件和大密封件，所述小密封件的中部一周开有凹槽，大密封件设置在小密封件的凹槽内，所述凹槽底部的两侧对应的大密封件上至少排布有两组滑动组件，所述滑动组件包括2个滑动柱，所述滑动柱的底部设有可钩住阀芯内壁的钩子；所述阀芯的顶部开有滑动孔，所述滑动组件可沿着滑动孔上下竖直滑动；此设计中，燃油箱加油时，燃油从底托上的进油口进入阀芯内，燃油未加满前，燃油蒸汽从进油进气口进入阀体后依次沿着排气口、容纳腔二和排气管通向碳罐以循环使用，当加油的高度没过进油进气口后，大量的燃油进入阀体内，密封组件的重力比阀芯小得多，密封组件先上浮，阀芯后上浮，当钩子钩住阀芯内壁时，密封组件将阀芯向上拉，密封组件堵住排气口，阀芯在密封组件拉力和燃油的作用下迅速向上，阀芯的顶部紧紧压在小密封件的底部，进一步提高密封组件的密封性；排气口被封住后，加油结束，油箱内的浪涌逐渐消失，阀体内的燃油液面逐渐降低，阀芯下降，当阀芯内壁的顶部钩住钩子时，阀芯带动小密封件和大密封件迅速下降，此时，液面的高度已经降至安全高度，实现排气口的迅速开启的同时确保油箱压力的平衡，不会导致漏油。In order to further improve the sealing performance of the present invention, the seal assembly includes a small seal and a large seal, the middle part of the small seal has a groove around it, the large seal is arranged in the groove of the small seal, and the groove At least two groups of sliding assemblies are arranged on the corresponding large seals on both sides of the bottom, the sliding assemblies include two sliding columns, and the bottom of the sliding columns is provided with a hook that can hook the inner wall of the spool; the spool There is a sliding hole on the top of the sliding hole, and the sliding assembly can slide vertically up and down along the sliding hole; in this design, when the fuel tank is refueled, the fuel enters the valve core from the oil inlet on the bottom support, and before the fuel is not filled, Fuel vapor enters the valve body from the fuel inlet and then leads to the carbon tank along the exhaust port, the second chamber and the exhaust pipe for recycling. When the height of refueling is lower than the fuel inlet, a large amount of fuel When entering the valve body, the gravity of the sealing component is much smaller than that of the valve core. The sealing component floats up first, and then the valve core floats up. When the hook hooks the inner wall of the valve core, the sealing component pulls the valve core upward, and the sealing component blocks the exhaust port. The spool moves upward rapidly under the action of the tension of the sealing assembly and the fuel, and the top of the spool is tightly pressed against the bottom of the small sealing element to further improve the sealing performance of the sealing assembly; after the exhaust port is sealed, the refueling is completed, and the fuel in the fuel tank The surge gradually disappears, the fuel liquid level in the valve body gradually decreases, and the valve core drops. When the top of the inner wall of the valve core hooks the hook, the valve core drives the small seal and the large seal to drop rapidly. At this time, the height of the liquid level has Lower to a safe height to realize the rapid opening of the exhaust port while ensuring the balance of the fuel tank pressure without causing oil leakage.
为了进一步提高密封组件结构的可靠性，所述小密封件和大密封件为一体化设置。In order to further improve the reliability of the seal assembly structure, the small seal and the large seal are integrated.
为了方便本发明与碳罐的连接，所述阀体的顶部设有具有容纳腔二的排气座，所述容纳腔二与排气口相对应，所述排气座的侧部连接有与容纳腔二相连通的排气管。In order to facilitate the connection between the present invention and the carbon canister, the top of the valve body is provided with an exhaust seat with a second accommodation chamber, the second accommodation chamber corresponds to the exhaust port, and the side of the exhaust seat is connected with a The two accommodating chambers are connected with each other by an exhaust pipe.
为了便于安装，所述排气管设置在排气座的下部。For the convenience of installation, the exhaust pipe is arranged at the lower part of the exhaust seat.
为了实现油气分离，所述底托的上侧设有呈中空的挡座，阀芯设置在挡座内壁朝里的方向上，所述挡座的顶部位于进油进气口顶部的上方且在阀体内壁的下方；此设计中，当燃油没过进油进气口时，燃油从进油进气口进入阀体内，燃油冲击到挡座上时，燃油蒸汽向上排，燃油向下流，实现燃油和燃油蒸汽的分离。In order to realize the separation of oil and gas, a hollow stop seat is provided on the upper side of the bottom support, and the valve core is arranged in the direction of the inner wall of the stop seat. The lower part of the body wall; in this design, when the fuel does not pass through the fuel inlet, the fuel enters the valve body from the fuel inlet, and when the fuel hits the stopper, the fuel vapor is discharged upwards, and the fuel flows downward, realizing fuel and fuel vapor separation.
为了方便控制阀与油箱的连接，所述排气座的顶部可拆卸地连接有顶盖。In order to facilitate the connection between the control valve and the oil tank, a top cover is detachably connected to the top of the exhaust seat.
为了方便顶盖的安装，所述顶盖的底部设有滑轨，所述排气座上设有可沿着滑轨滑动的滑动阶，远离排气管的滑动阶的一端的下侧设有卡扣一，靠近排气管的滑动阶下侧设有卡扣二，卡扣一与卡扣二之间的距离刚好为滑轨的长度。In order to facilitate the installation of the top cover, a slide rail is provided at the bottom of the top cover, a sliding step that can slide along the slide rail is provided on the exhaust seat, and a Buckle 1, the lower side of the sliding step near the exhaust pipe is provided with buckle 2, and the distance between buckle 1 and buckle 2 is just the length of the slide rail.
为了进一步提高进油量，所述进油进气口设置有2个且关于阀体在长度方向上的中心对称设置。In order to further increase the oil intake, there are two oil intake and air inlets, which are arranged symmetrically with respect to the center of the valve body in the length direction.
附图说明Description of drawings
图1为本发明的立体结构图。Fig. 1 is a three-dimensional structure diagram of the present invention.
图2为本发明的俯视图。Figure 2 is a top view of the present invention.
图3为本发明的A-A向视图。Fig. 3 is the A-A direction view of the present invention.
图4为本发明的B-B向视图。Fig. 4 is a B-B direction view of the present invention.
其中，1底托，2进油口，3排气管，4滑动阶，5排气座，6卡扣二，7顶盖，8卡扣一，9进油进气口，10阀体，11容纳腔二，12排气口，13密封组件，1301开启孔，1302小密封件，1303大密封件，1304滑动柱，1305钩子，14挡座，15阀芯，16容纳腔一，17弹簧，18滑轨。Among them, 1 bottom bracket, 2 oil inlet, 3 exhaust pipe, 4 sliding steps, 5 exhaust seat, 6 buckle 2, 7 top cover, 8 buckle 1, 9 oil inlet and air inlet, 10 valve body, 11 Accommodating cavity two, 12 Exhaust port, 13 Seal assembly, 1301 Opening hole, 1302 Small seal, 1303 Large seal, 1304 Sliding column, 1305 Hook, 14 Block seat, 15 Valve core, 16 Accommodating cavity 1, 17 Spring , 18 rails.
具体实施方式detailed description
下面结合附图对本发明作进一步的说明。The present invention will be further described below in conjunction with the accompanying drawings.
如图1～图4所示的一种加油控制阀，包括具有容纳腔一16的阀体10，阀体10的顶部开有排气口12，阀体10的上部开有至少一个进油进气口9，阀体10的底部固连有底托1，底托1上排布有若干进油口2，底托1上侧支撑设置有具有容纳腔且底部具有开口的阀芯15，底托1上侧连接弹簧17一端，弹簧17的另一端与阀芯15内壁的顶部连接，阀芯15的顶部可滑动地连接有密封组件13，密封组件13的顶部可堵住排气口12。A refueling control valve as shown in Figures 1 to 4 includes a valve body 10 with a chamber 16, an exhaust port 12 is opened on the top of the valve body 10, and at least one oil inlet is opened on the upper part of the valve body 10. Gas port 9, the bottom of the valve body 10 is fixedly connected with a bottom bracket 1, and a number of oil inlets 2 are arranged on the bottom bracket 1, and the upper side of the bottom bracket 1 is supported with a valve core 15 with an accommodation cavity and an opening at the bottom. One end of the spring 17 is connected to the upper side of the holder 1, and the other end of the spring 17 is connected to the top of the inner wall of the valve core 15. The top of the valve core 15 is slidably connected with a sealing assembly 13, and the top of the sealing assembly 13 can block the exhaust port 12.
为了进一步提高阀芯15下降的平稳性，密封组件13的中心开有开启孔1301，开启孔1301的直径为排气口12的直径的1/4-1/2，本实施例中，开启孔1301的直径优选为排气口12的直径的1/4。In order to further improve the stability of the valve core 15 descending, the center of the sealing assembly 13 has an opening hole 1301, and the diameter of the opening hole 1301 is 1/4-1/2 of the diameter of the exhaust port 12. In this embodiment, the opening hole The diameter of 1301 is preferably 1/4 of the diameter of the exhaust port 12 .
为了进一步提高本发明的密封性，密封组件13包括小密封件1302和大密封件1303，小密封件1302的中部一周开有凹槽，大密封件1303设置在小密封件1302的凹槽内，凹槽底部的两侧对应的大密封件1303上至少排布有两组滑动组件，本实施例中，滑动组件优选地设置有两组；滑动组件包括2个滑动柱1304，滑动柱1304的底部设有可钩住阀芯15内壁的钩子1305；阀芯15的顶部开有滑动孔，滑动组件可沿着滑动孔上下竖直滑动。In order to further improve the sealing performance of the present invention, the seal assembly 13 includes a small seal 1302 and a large seal 1303, the middle part of the small seal 1302 has a groove around it, and the large seal 1303 is arranged in the groove of the small seal 1302, At least two sets of sliding assemblies are arranged on the corresponding large seals 1303 on both sides of the bottom of the groove. In this embodiment, two sets of sliding assemblies are preferably arranged; the sliding assemblies include two sliding posts 1304, and the bottoms of the sliding posts 1304 A hook 1305 capable of hooking the inner wall of the valve core 15 is provided; a sliding hole is opened on the top of the valve core 15, and the sliding assembly can slide vertically up and down along the sliding hole.
为了进一步提高密封组件13结构的可靠性，小密封件1302和大密封件1303为一体化设置。In order to further improve the structural reliability of the seal assembly 13, the small seal 1302 and the large seal 1303 are integrated.
为了方便本发明与碳罐的连接，阀体10的顶部设有具有容纳腔二11的排气座5，容纳腔二11与排气口12相对应，排气座5的侧部连接有与容纳腔二11相连通的排气管3。In order to facilitate the connection between the present invention and the carbon canister, the top of the valve body 10 is provided with an exhaust seat 5 with a second accommodation chamber 11, the second accommodation chamber 11 corresponds to the exhaust port 12, and the side of the exhaust seat 5 is connected with The second chamber 11 is connected to the exhaust pipe 3 .
为了便于安装，排气管3设置在排气座5的下部。For ease of installation, the exhaust pipe 3 is arranged at the bottom of the exhaust seat 5 .
为了实现油气分离，底托1的上侧设有呈中空的挡座14，阀芯15设置在挡座14内壁朝里的方向上，挡座14的顶部位于进油进气口9顶部的上方且在阀体10内壁的下方；此设计中，当燃油没过进油进气口9时，燃油从进油进气口9进入阀体10内，燃油冲击到挡座14上时，燃油蒸汽向上排，燃油向下流，实现燃油和燃油蒸汽的分离。In order to realize the separation of oil and gas, the upper side of the bottom bracket 1 is provided with a hollow retaining seat 14, the valve core 15 is arranged on the inner wall of the retaining seat 14, and the top of the retaining seat 14 is located above the top of the oil inlet and air inlet 9. Below the inner wall of the valve body 10; in this design, when the fuel has not passed through the fuel inlet 9, the fuel enters the valve body 10 from the fuel inlet 9, and when the fuel hits the stopper 14, the fuel vapor goes upward Row, the fuel flows down to realize the separation of fuel and fuel vapor.
为了方便控制阀与油箱的连接，排气座5的顶部可拆卸地连接有顶盖7。In order to facilitate the connection between the control valve and the oil tank, a top cover 7 is detachably connected to the top of the exhaust seat 5 .
为了方便顶盖7的安装，顶盖7的底部设有滑轨18，排气座5上设有可沿着滑轨18滑动的滑动阶4，远离排气管3的滑动阶4的一端的下侧设有卡扣一8，靠近排气管3的滑动阶4下侧设有卡扣二6，卡扣一8与卡扣二6之间的距离刚好为滑轨18的长度。In order to facilitate the installation of the top cover 7, the bottom of the top cover 7 is provided with a slide rail 18, and the exhaust seat 5 is provided with a slide step 4 that can slide along the slide rail 18, and the end of the slide step 4 away from the exhaust pipe 3 The lower side is provided with a buckle one 8, and the lower side of the sliding step 4 near the exhaust pipe 3 is provided with a buckle two 6, and the distance between the buckle one 8 and the buckle two 6 is just the length of the slide rail 18.
本实施例中，进油进气口9优选地设置有2个且关于阀体10在长度方向上的中心对称设置。In this embodiment, there are preferably two oil inlet and air inlets 9 and they are arranged symmetrically with respect to the center of the valve body 10 in the length direction.
本发明工作时，燃油箱加油时，燃油从底托1上的进油口2进入阀芯15内，燃油未加满前，燃油蒸汽从进油进气口9进入阀体10后依次沿着排气口12、容纳腔二11和排气管3通向碳罐以循环使用，当加油的高度没过进油进气口9后，大量的燃油进入阀体10内，密封组件13的重力比阀芯15小得多，密封组件13先上浮，阀芯15后上浮，当钩子1305钩住阀芯15内壁时，密封组件13将阀芯15向上拉，密封组件13堵住排气口12，阀芯15在密封组件13拉力和燃油的作用下迅速向上，阀芯15的顶部紧紧压在小密封件1302的底部，进一步提高密封组件13的密封性；排气口12被封住后，加油结束，油箱内的浪涌逐渐消失，阀体10内的燃油液面逐渐降低，阀芯15下降，阀芯15离开小密封件1302的底部，此时，燃油蒸汽可以沿着开启孔1301少量排出，实现排气口12的一级开启，提高阀芯15下降的平稳性；阀芯15迅速下降，当阀芯15内壁的顶部钩住钩子1305时，阀芯15带动小密封件1302和大密封件1303迅速下降，此时，液面的高度已经降至安全高度，实现排气口12的二级开启，此时排气口12已经完全开启，确保油箱压力的平衡，不会导致漏油；从以上就可看出，本发明与现有技术相比，具有的技术效果为：本发明的结构简单且巧妙，通过简单的结构设计实现更好的密封性，当液面下降到安全高度时，排气口12才会完全开启，开启速度快，防止漏油的同时，保持油箱压力的平衡，阀芯15下降平稳；本发明可应用于汽车加油时控制加油量的工作中。When the present invention works, when the fuel tank is refueled, the fuel enters the valve core 15 from the oil inlet 2 on the bottom bracket 1, and before the fuel is filled up, the fuel vapor enters the valve body 10 from the oil inlet 9 and then follows along the The exhaust port 12, the accommodation chamber 11 and the exhaust pipe 3 lead to the carbon tank for recycling. When the height of refueling is lower than the oil inlet and air inlet 9, a large amount of fuel enters the valve body 10, and the gravity of the sealing assembly 13 Much smaller than the spool 15, the sealing assembly 13 floats up first, and the spool 15 floats later. When the hook 1305 hooks the inner wall of the spool 15, the sealing assembly 13 pulls the spool 15 upward, and the sealing assembly 13 blocks the exhaust port 12 , the spool 15 moves upward rapidly under the action of the tension of the sealing assembly 13 and the fuel, and the top of the spool 15 is tightly pressed against the bottom of the small sealing member 1302 to further improve the sealing performance of the sealing assembly 13; after the exhaust port 12 is sealed, After refueling, the surge in the fuel tank gradually disappears, the fuel level in the valve body 10 gradually decreases, the spool 15 descends, and the spool 15 leaves the bottom of the small seal 1302. At this time, the fuel vapor can flow along the opening hole 1301 A small amount of discharge realizes the first-level opening of the exhaust port 12 and improves the stability of the spool 15 descending; the spool 15 descends rapidly, and when the top of the inner wall of the spool 15 hooks the hook 1305, the spool 15 drives the small seal 1302 and The large seal 1303 drops rapidly. At this time, the height of the liquid level has dropped to a safe height, and the secondary opening of the exhaust port 12 is realized. At this time, the exhaust port 12 has been fully opened to ensure the balance of the fuel tank pressure and will not cause leakage. As can be seen from the above, the present invention has the technical effect compared with the prior art: the structure of the present invention is simple and ingenious, and better sealing is achieved through simple structural design. When the liquid level drops to a safe When the height is high, the exhaust port 12 will be fully opened, and the opening speed is fast, while preventing oil leakage, the balance of the fuel tank pressure is maintained, and the spool 15 descends steadily;
本发明并不局限于上述实施例，例如，进油进气口9还可根据需求设置有1个、3个或更多个，滑动组件还可设置为3组甚至更多组，在本发明公开的技术方案的基础上，本领域的技术人员根据所公开的技术内容，不需要创造性的劳动就可以对其中的一些技术特征作出一些替换和变形，这些替换和变形均在本发明保护范围内。The present invention is not limited to the above-mentioned embodiment, for example, oil inlet and air inlet 9 can also be provided with 1, 3 or more according to demand, and sliding assembly can also be provided with 3 groups or even more groups, in the present invention On the basis of the disclosed technical solutions, those skilled in the art can make some replacements and modifications to some of the technical features without creative work according to the disclosed technical content, and these replacements and modifications are within the protection scope of the present invention .
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710895101.3ACN107606178A (en) | 2017-09-28 | 2017-09-28 | A kind of refueling control valve |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710895101.3ACN107606178A (en) | 2017-09-28 | 2017-09-28 | A kind of refueling control valve |
| Publication Number | Publication Date |
|---|---|
| CN107606178Atrue CN107606178A (en) | 2018-01-19 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710895101.3APendingCN107606178A (en) | 2017-09-28 | 2017-09-28 | A kind of refueling control valve |
| Country | Link |
|---|---|
| CN (1) | CN107606178A (en) |
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| CN109538800A (en)* | 2018-11-09 | 2019-03-29 | 中国直升机设计研究所 | A kind of automatic exhaust steam valve and the fuel tank aerating system with it |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication | Application publication date:20180119 |