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CN109734042A - Refueling nozzle and fuel-servicing equipment - Google Patents

Refueling nozzle and fuel-servicing equipment Download PDF

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Publication number
CN109734042A
CN109734042A CN201910028449.1A CN201910028449A CN109734042A CN 109734042 A CN109734042 A CN 109734042A CN 201910028449 A CN201910028449 A CN 201910028449A CN 109734042 A CN109734042 A CN 109734042A
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CN
China
Prior art keywords
seal
refueling nozzle
pull rod
sleeve
bracket
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.)
Pending
Application number
CN201910028449.1A
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Chinese (zh)
Inventor
周学俊
李华平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Samig Environmental Protection Technology Co Ltd
Original Assignee
Suzhou Samig Environmental Protection Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Suzhou Samig Environmental Protection Technology Co Ltd filed Critical Suzhou Samig Environmental Protection Technology Co Ltd
Priority to CN201910028449.1A priority Critical patent/CN109734042A/en
Publication of CN109734042A publication Critical patent/CN109734042A/en
Pending legal-status Critical Current

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Abstract

The present invention relates to fuel oil filling technique fields, provide refueling nozzle and fuel-servicing equipment.Wherein, refueling nozzle includes the gas circuit valve module for controlling gas path on-off, and gas circuit valve module includes bracket and pull rod, the sleeve passed through for pull rod is formed on bracket, pull rod can be moved back and forth by sleeve;Sealed socket sleeve is located on the sleeve of bracket, and sealing element is arranged in seal receptacle, and wherein sealing element includes at least first seal and second seal;Sleeve is sealed by first seal and seal receptacle, and pull rod can pass through seal receptacle and move;Pull rod and seal receptacle are sealed by second seal.It is fixedly installed with seal receptacle on the sleeve of gas circuit valve module provided by the invention, passes through seal receptacle seal sleeve and pull rod.Wherein, the sleeve of bracket is sealed by way of static seal, and relative motion will not occur between sealing element and sleeve, so that the service life of sealing element greatly improved.

Description

Refueling nozzle and fuel-servicing equipment
Technical field
The present invention relates to fuel oil filling technique field, in particular to a kind of refueling nozzle and fuel-servicing equipment.
Background technique
With the development of science and technology, living standard also increasingly improves, the vehicles such as automobile are more more and more universal.In existing city In, the motor vehicle of fuel oil occupies larger share, therefore then particularly important for motor vehicle supplement fuel oil in time.
In daily life, from the point of view of safety and convenience, it will usually gas station is planned in designated place, Fuel reservoir is set in the underground of gas station, and multiple fuel distribution equipment connecting with fuel reservoir are set, each fuel oil point With equipment by the refueling nozzle on fuel charger to vehicles fuel up.
Gas circuit and oil circuit are generally included in existing refueling nozzle, air pressure and absorption in refueling nozzle can be adjusted by gas circuit Oil gas in fuel tank, while passing through oil circuit fuel up into fuel tank.Gas circuit includes the gas circuit valve group for controlling gas path on-off Part, and gas circuit and oil circuit can be opened simultaneously or be closed, and wherein gas circuit valve module is by sealing ring to pull rod gas circuit valve module It is sealed.
In the prior art, pull rod is sealed using piston type, and sealing ring is fixed on pull rod, close in adjusting yoke Seal is moved relative to inner hole.Due to the limitation of technology difficulty and cost, the inner surface of the sleeve of bracket is relatively rough, therefore close Seal contacts with the inner surface of sleeve and occurs when relative motion that sealing ring is big by frictional resistance, causes ring wear fast, Shorten its service life.After the use of certain time, due to sealing ring abrasion and cause the air-tightness of gas circuit to decline, thus shadow Ring conventional refueling operation.Further, since the inner surface of sleeve it is relatively rough and be subject to sealing ring frictional resistance increase, because This is larger by the strength that trigger action aperture, control bound and gas circuit valve module need, and may will affect the normal use of user.
Summary of the invention
Present invention has been made in view of the above problems, and its purpose is to provide a kind of refueling nozzles, can be close by being arranged Seal seat change gas circuit valve module sealing means, thus reduce open gas circuit valve module used in power, while reduce sealing element by The abrasion arrived.
According to the present invention, refueling nozzle includes gas circuit valve module, for controlling gas path on-off, gas circuit valve module include bracket and Pull rod, the sleeve passed through for pull rod is formed on bracket, and pull rod can be moved back and forth by sleeve;Gas circuit valve module further includes close Seat is sealed, sealed socket sleeve is located on the sleeve of bracket, and sealing element is arranged in seal receptacle, and wherein it is close to include at least first for sealing element Sealing and second seal;Sleeve is sealed by first seal and seal receptacle, and pull rod can pass through seal receptacle and move;Pull rod with Seal receptacle is sealed by second seal, and pull rod can pass through seal receptacle and move.
Compared to existing technologies, it is fixedly installed with seal receptacle on the sleeve of gas circuit valve module provided by the invention, led to Cross seal receptacle seal sleeve and pull rod.Wherein, the sleeve of bracket is sealed by way of static seal, between sealing element and sleeve not Relative motion can occur, so that the service life of sealing element greatly improved.Also, by the sealing between pull rod and sleeve by outer Diameter sealing becomes inner diameter seal, to reduce the technology difficulty and cost of processing pull rod.
Preferably, seal receptacle passes through second seal dynamic sealing pull rod, energy by the close static seal sleeve of first seal Enough separate the oil circuit and gas circuit of refueling nozzle.
In the motion process of pull rod, sealing element can be moved together with pull rod, install sealing element by seal groove, can Effectively the position of sealing element is fixed, it is ensured that the air-tightness of gas circuit valve module.In addition, seal receptacle is removably mountable to cover On cylinder, when sealing performance decline, replace seal receptacle and sealing ring and be just able to carry out maintenance, thus can reduce maintenance cost with Maintenance difficulty.
Further, preferably, seal groove includes at least the first seal groove and the second seal groove, and it is arranged first First seal seal sleeve and seal receptacle in seal groove, be arranged in the second seal groove second seal sealing pull rod with Seal receptacle.
The sealing performance for being conducive to improve gas circuit valve module is sealed by multiple seal grooves.Also, reduce gas circuit valve Using the number of the sealing ring of dynamic sealing in component, the abrasion that sealing ring is subject to is advantageously reduced, to effectively extend close The service life of seal reduces the cost of production and maintenance gas circuit valve module.Further, since pull rod frictional resistance reduces, so that The pretightning force of second flow valve Packing spring also reduces, to improve the use feel of refueling nozzle.
Further, preferably, being formed with limiting section on the inner wall of seal receptacle, limiting section is set to the first seal groove And second between seal groove.
Limiting section, which is arranged, can limit the motion range of pull rod, to prevent pull rod hyperkinesia, and refueling nozzle be caused to damage It is bad.
In addition, preferably, first seal and second seal are sealing ring.
The integrality of sealing ring is higher, is able to carry out the sealing of full angle, so that integrally-built leakproofness enhances.And And sealing ring acquisition difficulty is low and installation is simple.
In addition, the outer diameter of pedestal is greater than the outer diameter of cylindrical portion, pedestal preferably, seal receptacle includes cylindrical portion and pedestal The one end for the first flow valve Packing spring that surface connection is set on pull rod, first flow valve Packing spring are in compression always State, support seal receptacle on bracket.
The radius of pedestal is set greater than to the radius of cylindrical portion, first flow valve Packing spring is set in close It seals on seat, while first flow valve Packing spring supports on pedestal, to play the effect of fixing seal seat.
Further, preferably, being additionally provided in cylindrical portion by the outwardly extending boss portion of lateral wall, boss portion connection It is set in one end of the second flow valve Packing spring on pull rod, and second flow valve Packing spring is in the shape of compression always State.
Boss portion can be abutted by one end of second flow sealing valve, so that further seal receptacle is fixed, and Seal receptacle can react on second flow valve Packing spring, to play the motion range of limitation second flow valve Packing spring Effect.
In addition, being provided with open corresponding with position of mounting hole on pedestal preferably, be provided with mounting hole on bracket Seal receptacle can be fixed on bracket by hole by the cooperation of installation part and mounting hole.
By the fit system of installation part and mounting hole, seal receptacle can be allowed to engage with the sleeve of bracket even closer, from And further improve whole air-tightness.
In addition, preferably, the surface roughness of the lateral wall of pull rod is in the range of Ra0.2-Ra1.2.
It since the lateral wall difficulty of processing of pull rod is low, is easy to be finished, therefore, the surface roughness of pull rod is controlled It in the range of Ra0.2-Ra1.2, can efficiently reduce during adjusting yoke, the friction between pull rod and sealing element Resistance improves the service life of sealing element to reduce the abrasion of sealing element.
Further, it preferably, being provided with screw thread on the bracket of refueling nozzle, and is connected through a screw thread and is installed on refueling nozzle Gun body.
Being connected through a screw thread can be mounted on gas circuit valve unit firmly in gun body, gas circuit when preventing from pressing trigger Valve module is subjected to displacement and influences refueling operation.
Further, in the present embodiment, one end of the pull rod of refueling nozzle can be connected to clutch the axis group of refueling nozzle Part, and be arranged along the axis of shaft assembly.
It contacts or separates with shaft assembly by control pull rod, effectively opening or closing for refueling nozzle can be controlled System.
The present invention also provides a kind of fuel-servicing equipments comprising above-mentioned refueling nozzle, and wherein refueling nozzle passes through fuel-servicing equipment pipeline It is connect with the other assemblies of fuel-servicing equipment.
Compared with prior art, fuel-servicing equipment provided by the invention can be subtracted by improving the sealing means in refueling nozzle The resistance that small sealing element is subject to, to improve the feel using refueling nozzle.
Detailed description of the invention
Fig. 1 is the schematic diagram that gas circuit valve module of the invention is in close state;
Fig. 2 is gas circuit valve module of the invention schematic diagram in the open state;
Fig. 3 is the schematic diagram of bracket of the invention;
Fig. 4 is the stereoscopic schematic diagram of seal receptacle of the invention;
Fig. 5 is the schematic cross-sectional view of seal receptacle of the invention;
Fig. 6 is the schematic diagram of refueling nozzle of the invention.
Description of symbols
1- gas circuit valve module;2- bracket;2a- sleeve;The small flow valve of 2b- fuel oil;3- seal receptacle;3a- pedestal;3b- tubular Portion;The first seal groove of 3b1-;The second seal groove of 3b2-;3c- boss portion;3d- limiting section;4- pull rod;5a- first seal;5b- Second seal;6- first flow valve Packing spring;7- second flow valve Packing spring;8- refueling nozzle;8a- shaft assembly;8b- rifle Body;8b1- screw thread;8c- trigger;9- gas circuit;10- oil circuit.
Specific embodiment
With reference to the accompanying drawings of the specification, the present invention is further described in detail.Schematically simplification is shown in attached drawing The structure etc. of refueling nozzle is gone out.
Embodiment one
First embodiment of the invention provides a kind of refueling nozzle, including gas circuit valve module, for controlling gas path on-off, Referring to shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 6, gas circuit valve module 1 includes bracket 2 and pull rod 4.It is formed on bracket 2 for pull rod 4 The sleeve 2a passed through.Pull rod 4 can be moved back and forth by sleeve 2a.Wherein, seal receptacle 3 is set on the sleeve 2a of bracket 2, and Sealing element is set in seal receptacle 3.Sealing element includes at least first seal 5a and second seal 5b.Sleeve 2a passes through first Sealing element 5a and seal receptacle 3 seal, and pull rod 4 can pass through seal receptacle 3 and move.Pull rod 4 and seal receptacle 3 pass through second seal 5b Sealing.
In simple terms, in the present embodiment, by being arranged first seal 5a on the sleeve 2a of bracket 2, thus with The mode sealed support 2 and seal receptacle 3 of static seal.In the course of work of refueling nozzle, seal receptacle 3 does not occur with sleeve 2a opposite Movement, therefore good sealing effect can be played and the friction that sealing element is subject to can be reduced, to effectively extend sealing The service life of part.In addition, second seal 5b is also fixedly installed in 3 inner wall of seal receptacle, by the lateral wall for finishing pull rod 4 The degree of roughness on 4 surface of pull rod, and simple process can be effectively reduced.It, can since the surface of pull rod 4 is more smooth Substantially reduce the frictional resistance between sealing element and pull rod 4, to reduce the abrasion to sealing element, extend sealing ring uses the longevity Life.Wherein, first seal 5a and second seal 5b is usually sealing ring.
Specifically, the gas circuit valve module 1 of refueling nozzle includes the pull rod of at least two sealing ring, is installed on the sleeve of bracket In, pull rod can be in sleeve along the axially reciprocating of itself.The small flow valve of fuel oil is connected through a screw thread to be fixed with pull rod, And the axial direction on pull rod along pull rod is additionally provided with gas circuit sealing flow valve Packing spring.When refueling nozzle trigger is pulled When dynamic, while main valve open, pushing drawing rod moves right, and the small flow valve of fuel oil is simultaneously open.At this point, oil gas passes through rifle Petroleum vapor recovery chamber on body in the gas circuit 9 being connected into oil gas recovery rubber tube, realizes petroleum vapor recovery function and 10 on-off of oil circuit The efficiency of refueling nozzle petroleum vapor recovery greatly improved in the synchronization of movement.
Also, it is in the present embodiment, shown in Figure 6, it is provided with screw thread 8b1 on the bracket 2 of refueling nozzle 8, in gun body 8 Corresponding position on be provided with screw thread, gas circuit valve module 1 is connected through a screw thread on the gun body 8b1 for being installed on refueling nozzle 8.Also, One end of the pull rod of refueling nozzle 8 can be connected to clutch the shaft assembly 8a of refueling nozzle 8, and set along the axis of shaft assembly 8a It sets.
From the point of view of improving device reliability and extending the service life of sealing element, in the present embodiment, gas Road valve reduces the number of the dynamic sealing wherein used, and the piston type sealing on pull rod is changed into rod-pulling type sealing.Wherein, close Envelope seat 3 is fixedly mounted on sleeve 2a, and the seal groove that can install sealing element is provided on the inner sidewall of seal receptacle 3.
Specifically, seal groove is set on the inner sidewall of seal receptacle 3, and seal groove is annular in shape, enables sealing ring It is enough arranged and is fixed on pull rod 4, so as to seal the circumferential direction of pull rod 4 well in pull rod 4 and sleeve 2a relative motion, prevent Only gas leaks.Also, the diameter of the seal groove of annular is equal to or slightly less than the diameter of sealing ring, without other fixing pieces Sealing ring can be securely disposed in seal groove, prevent sealing ring from falling off out of seal groove when pull rod 4 is moved.
In addition, the diameter of section of sealing ring be slightly larger than seal groove depth, after installing pull rod 4, sealing ring due to by To pull rod 4 extruding and deformation occurs, it is ensured that in pull rod 4 during the opposite sliding with sleeve 2a's, sealing ring can be drawn The lateral wall of bar 4 is kept in contact, to improve the effect of sealing.
Also, in the present embodiment, seal receptacle 3 include cylindrical portion 3b and pedestal 3a, wherein the axial direction of cylindrical portion 3b with Sleeve 2a's is axial parallel, and pedestal 3a is contacted with bracket 2.The first flow valve sealing for transmission is also arranged on pull rod 4 Spring 6, wherein one end of first flow valve Packing spring 6 is fixed on the surface pedestal 3a, and the other end is fixed on the small flow valve of fuel oil 2b.Also, first flow valve Packing spring 6 is in the state of compression, so as to which seal receptacle 3 is fixed on branch by pretightning force On frame 2.
In addition, in the present embodiment, it is shown in Figure 4, the lateral wall of cylindrical portion 3b is additionally provided on cylindrical portion 3b Outwardly extending boss portion 3c.Wherein, boss portion 3c is arranged along the circumferential of section of cylindrical portion 3b, and boss portion 3c's is outer Outer diameter of the diameter less than pedestal 3a and the outer diameter for being greater than cylindrical portion 3b.Boss portion 3c and one end of second flow valve Packing spring 7 are supported It connects, the other end of second flow valve Packing spring 7 is connected to the small flow valve 2b of fuel oil and first flow valve Packing spring 6 and Two flow valve Packing springs 7 are coaxially disposed, and second flow valve Packing spring 7 is also at the state of compression, so as to pass through Pretightning force further fixes seal receptacle 3.
It is noted that for considering for frictional resistance, reduction difficulty of processing and processing cost is reduced, in this embodiment party The surface roughness of the lateral wall of pull rod 4 is in the range of Ra0.2-Ra1.2 in formula.By reducing the coarse of 4 surface of pull rod Degree, the frictional resistance that can be effectively reduced between sealing ring and pull rod 4, to reduce the pretightning force of second flow valve sealing. With the reduction of frictional resistance and pretightning force, power needed for pressing trigger 8c also reduces, so that operation refueling nozzle Movement is more smooth, improves the feel of refueling nozzle.
In addition, in the present embodiment, limiting section 3d is formed on the inner wall of seal receptacle 3, limiting section 3d is set to Between the sealing 3b2 slot of one seal groove 3b1 and second.
Limiting section 3d can limit deformation range of the second seal 5b when pull rod 4 is mobile, to prevent pull rod 4 mobile When, lead to second seal 5b excessive wear, and refueling nozzle 8 is caused to damage.
For synthesis, it is fixedly installed with seal receptacle 3 on the sleeve 2a of gas circuit valve module 1 in present embodiment, passes through sealing 3 seal sleeve 2a of seat and pull rod 4.Wherein, the sleeve 2a of bracket 2 is sealed by way of static seal, sealing ring and sleeve 2a it Between relative motion will not occur, so that the service life of sealing ring greatly improved.Also, it will be between pull rod 4 and sleeve 2a Sealing becomes inner diameter seal from outside diameter seal, to reduce the technology difficulty and cost of processing pull rod 4, while can be by subtracting Small frictional resistance between the two, which improves, uses feel.
Embodiment two
Second embodiment of the present invention provides a kind of refueling nozzle 8, in the present embodiment, referring to Fig. 1, Fig. 2 and Fig. 5 Shown, seal groove includes at least the first seal groove 3b1 and the second seal groove 3b2, and the first sealing of first seal 5a sealing Slot 3b1 and sleeve 2a, second seal 5b seal the second seal groove 3b2 and pull rod 4.
Specifically, two seal grooves on seal receptacle 3 are respectively used to two different positions of sealing.Wherein, first is close Sealing groove 3b1 and the second seal groove 3b2 is the annular groove that cylindrical portion 3b inner wall is arranged in, and the circumferential direction and cylindrical portion of annular groove The circumferential direction of ring section is consistent.Wherein, the first seal groove 3b1 is set to cylindrical portion 3b close to one end of pedestal 3a, the second sealing Slot 3b2 is arranged on the inner wall of the one end of cylindrical portion 3b far from pedestal 3a.The sealing ring of setting in the first seal groove 3b1 is used In sealed support 2 and seal receptacle 3, the sealing ring being arranged in the second seal groove 3b2 is for pull rod 4 and seal receptacle 3.Certainly, exist The first seal groove 3b1 can also be set between pedestal 3a and bracket 2 in other embodiments, as long as can be realized air seal Effect.
At this point, operation refueling nozzle (such as pressing trigger 8c), since flow valve Packing spring is still within compression State therefore, will not between seal receptacle 3 and bracket 2 under the pretightning force effect of the first and second flow valve Packing springs 6,7 Relative displacement occurs, thus realize the static seal between seal receptacle 3 and bracket 2, it is substantially extended close compared to for dynamic sealing The service life of seal.
Embodiment three
Third embodiment of the present invention provides a kind of refueling nozzle 8, and present embodiment is to first or second embodiment party The further improvement of formula, mainly thes improvement is that, in the present embodiment, mounting hole is provided on bracket 2, in pedestal 3a On be provided with aperture corresponding with position of mounting hole, can will by the cooperation of installation part (not shown) and mounting hole (not shown) Seal receptacle 3 is fixed on bracket 2.Wherein, common installation part and mounting hole are screw hole and screw.
In simple terms, in order to further ensure that the sealing effect between bracket 2 and pull rod 4, to enhance gas circuit valve module 1 Reliability, need to prevent seal receptacle 3 and bracket 2 to be detached from.
Specifically, in the present embodiment, screw hole can be set on bracket 2, and set on the pedestal 3a of seal receptacle 3 The corresponding aperture of seated position, to realize the fixed installation of seal receptacle 3.
Further, in the present embodiment, the pedestal 3a of seal receptacle 3 can also be sealed by sealant and is fixed on bracket It on 2 sleeve 2a, is sealed while fixing seal seat 3, advantageously reduces manufacturing process, reduce manufacturing cost.
In addition, in the present embodiment, it can be not provided with the first seal groove 3b1, and in the pedestal 3a and bracket of seal receptacle 3 Gasket seal is set between 2, so that seal receptacle 3 is mounted on bracket 2, plays good sealing effect.It is worth noting that, After seal receptacle 3 is installed, gasket seal should be at the state being squeezed, so that it is guaranteed that the sealing effect of gasket seal.
Embodiment four
4th embodiment of the invention provides in a kind of fuel-servicing equipment, including the first, second or third embodiment Refueling nozzle described in any one, and refueling nozzle is connect by pipeline with fuel-servicing equipment.
Compared with prior art, the fuel-servicing equipment that present embodiment provides can be by improving the sealing side in refueling nozzle Formula improves the feel for using refueling nozzle to reduce the resistance that sealing element is subject to.
It will be understood by those skilled in the art that in above-mentioned each embodiment, in order to keep reader more preferably geographical, It solves the application and proposes many technical details.But even if without these technical details and based on the respective embodiments described above Various changes and modifications can also realize each claim of the application technical solution claimed substantially.Therefore, in reality In, can to above embodiment, various changes can be made in the form and details, without departing from spirit and model of the invention It encloses.

Claims (13)

1. a kind of refueling nozzle, including gas circuit valve module, for controlling gas path on-off, the gas circuit valve module includes bracket and drawing Bar, which is characterized in that the sleeve passed through for the pull rod is formed on the bracket, the pull rod can be past by the sleeve Multiple movement;The gas circuit valve module further includes seal receptacle, and the sealed socket sleeve is located on the sleeve of the bracket, and in institute It states and sealing element is set in seal receptacle, wherein the sealing element includes at least first seal and second seal;
The sleeve is sealed by the first seal and the seal receptacle;
The pull rod and the seal receptacle are sealed by second seal, and the pull rod can pass through the seal receptacle and move.
2. refueling nozzle according to claim 1, the seal receptacle is by sleeve described in first seal static seal, by the Pull rod described in two sealing element dynamic sealings can separate the oil circuit and gas circuit of the refueling nozzle.
3. refueling nozzle according to claim 2, which is characterized in that the seal receptacle is fixedly mounted on the sleeve, and And the seal groove that can install the sealing element is provided on the inner sidewall of the seal receptacle.
4. refueling nozzle according to claim 3, which is characterized in that the seal groove includes at least the first seal groove and second Seal groove, and the first seal being arranged in first seal groove seals the seal receptacle and the sleeve, if The second seal set in second seal groove seals the seal receptacle and the pull rod.
5. refueling nozzle according to claim 4, which is characterized in that it is formed with limiting section on the inner wall of the seal receptacle, The limiting section is set between first seal groove and second seal groove.
6. refueling nozzle according to claim 3, which is characterized in that the first seal and the second seal are close Seal.
7. refueling nozzle according to claim 1, which is characterized in that the seal receptacle includes cylindrical portion and pedestal, the bottom The outer diameter of seat is greater than the outer diameter of the cylindrical portion, the first flow valve sealing that the susceptor surface connection is set on the pull rod One end of spring, the first flow valve Packing spring are in the state of compression, support the seal receptacle on bracket.
8. refueling nozzle according to claim 7, which is characterized in that be additionally provided in the cylindrical portion from lateral wall to extension The boss portion stretched, the one end for the second flow valve Packing spring that the boss portion connection is set on the pull rod, and it is described Second flow valve Packing spring is in the state of compression.
9. refueling nozzle according to claim 7, which is characterized in that mounting hole is provided on the bracket, at the bottom It is provided with aperture corresponding with the position of mounting hole on seat, it can will be described close by the cooperation of installation part and the mounting hole It is fixed on the bracket to seal seat.
10. refueling nozzle described in any one of -9 according to claim 1, which is characterized in that the table of the lateral wall of the pull rod Surface roughness is in the range of Ra0.2-Ra1.2.
11. refueling nozzle according to claim 10, which is characterized in that be provided with spiral shell on the bracket of the refueling nozzle Line, and it is connected through a screw thread the gun body for being installed on the refueling nozzle.
12. refueling nozzle according to claim 11, which is characterized in that one end of the pull rod of the refueling nozzle can clutch Ground is connected to the shaft assembly of the refueling nozzle, and is arranged along the axis of the shaft assembly.
13. a kind of fuel-servicing equipment, which is characterized in that including the refueling nozzle as described in any one of claim 1-12, wherein The refueling nozzle is connected by the other assemblies of fuel-servicing equipment pipeline and fuel-servicing equipment.
CN201910028449.1A 2019-01-11 2019-01-11 Refueling nozzle and fuel-servicing equipment Pending CN109734042A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910028449.1A CN109734042A (en) 2019-01-11 2019-01-11 Refueling nozzle and fuel-servicing equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910028449.1A CN109734042A (en) 2019-01-11 2019-01-11 Refueling nozzle and fuel-servicing equipment

Publications (1)

Publication Number Publication Date
CN109734042A true CN109734042A (en) 2019-05-10

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Publication number Priority date Publication date Assignee Title
GB1270762A (en) * 1969-03-28 1972-04-12 Dornier System Gmbh A sealing device for a shaft
CN2039686U (en) * 1988-10-28 1989-06-21 胡嘉彬 Button type full sealed oil feeding gun
EP1090877A1 (en) * 1999-10-08 2001-04-11 Saint-Gobain Performance Plastics Corporation Dispense head assembly
US20120199431A1 (en) * 2010-08-09 2012-08-09 Aktiebolaget Skf Guiding and sealing unit, in particular for a rod of a mono-tube shock absorber and annular sealing assembly therefore
CN103663335A (en) * 2013-11-25 2014-03-26 浙江春晖智能控制股份有限公司 Self-sealing oil gun for oil gas recovery
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CN206786010U (en) * 2017-06-01 2017-12-22 张继强 A kind of rotary seal structure
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CN209569341U (en) * 2019-01-11 2019-11-01 苏州三米格环保科技有限公司 Gas circuit valve module and refueling nozzle

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112010255A (en) * 2020-08-26 2020-12-01 浙江通联石油机械有限公司 Oil gun
CN112010255B (en) * 2020-08-26 2022-06-17 浙江通联石油机械有限公司 Oil gun

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