Oil gun
阅读说明:本技术 一种加油枪 (Oil gun ) 是由 尚佳成 贺振江 邹骏 朱大义 梁斌 于 2019-09-29 设计创作,主要内容包括:本发明涉及一种加油枪,包括:枪体,其包括:进油口、出油口以及二者之间供油液通过的液体通道;阀组件,其设置于枪体内,经配置以允许或阻止油液通过液体通道;以及驱动机构,其设置于枪体内,经配置以控制阀组件的开启或关闭;其中,阀组件包括油路阀,油路阀包括油路阀座和油路阀芯,油路阀芯经配置抵顶于油路阀座时,油液禁止通过油液通道,其中,油路阀芯的半径与油路阀之前液体通道的半径大致相同或二者之差小于5mm。本申请油枪结构简单,易于装配,而且油液进口直径大,可以使得油枪具有较高的流速。(The present invention relates to a fuel gun, comprising: a gun body, comprising: the oil inlet, the oil outlet and a liquid channel for oil to pass through between the oil inlet and the oil outlet; a valve assembly disposed within the gun body configured to allow or prevent oil from passing through the liquid passage; the driving mechanism is arranged in the gun body and is configured to control the valve component to be opened or closed; the valve component comprises an oil circuit valve, the oil circuit valve comprises an oil circuit valve seat and an oil circuit valve core, when the oil circuit valve core is configured to abut against the oil circuit valve seat, oil is forbidden to pass through an oil liquid channel, wherein the radius of the oil circuit valve core is approximately the same as that of a liquid channel in front of the oil circuit valve, or the difference between the radius of the oil circuit valve core and the radius of the liquid channel in front of the oil circuit valve is smaller than. This application oil gun simple structure, easily assembly, fluid import diameter is big moreover, can be so that the oil gun has higher velocity of flow.)
1. A fuel gun, comprising:
a gun body, comprising: the oil inlet, the oil outlet and a liquid channel for oil to pass through between the oil inlet and the oil outlet;
a valve assembly disposed within the gun body configured to allow or prevent oil from passing through the liquid passage; and
the driving mechanism is arranged in the gun body and is configured to control the valve component to be opened or closed;
the valve component comprises an oil circuit valve, the oil circuit valve comprises an oil circuit valve seat and an oil circuit valve core, when the oil circuit valve core is configured to abut against the oil circuit valve seat, oil is forbidden to pass through an oil liquid channel, wherein the radius of the oil circuit valve core is approximately the same as that of a liquid channel in front of the oil circuit valve, or the difference between the radius of the oil circuit valve core and the radius of the liquid channel in front of the oil circuit valve is smaller than.
2. The fuel filler gun according to claim 1, wherein a portion of the oil path valve seat which is not in contact with the oil path valve element is hollowed out.
3. The fuel nozzle of claim 1, further comprising: and the diversion cone is arranged between the oil way valve core and the driving mechanism, and the diameter of the diversion cone is gradually reduced along the oil flowing direction.
4. The fuel nozzle as claimed in claim 1, wherein the nozzle body projects outwardly at a position close to the drive mechanism and is configured to increase the width of the liquid passage in the nozzle body.
5. The fuel gun of claim 1, wherein the gun body interior further comprises a gas passage configured to recycle collected oil vapor into the fuel dispenser; wherein the valve assembly comprises a gas circuit valve configured to allow or block oil vapor from passing through the gas passage; wherein, the oil circuit valve and the gas circuit valve are opened or closed simultaneously.
6. The fuel nozzle of claim 5, wherein the gas circuit valve comprises a gas circuit valve seat and a valve stem, the gas circuit valve seat comprising an inner ring and an outer ring, the inner ring being a gas passage and the outer ring being a liquid passage; the outer ring wall of the air circuit valve seat is connected with the oil circuit valve seat, one end of the valve rod is connected with the oil circuit valve core, and the other end of the valve rod is positioned in the inner ring and can seal an air channel of the inner ring through configuration.
7. The fuel nozzle of claim 6, wherein the air passage is directionally deflected after passing through the air passage valve.
8. The fuel nozzle of claim 6, wherein the diameter of the outer ring of the gas path valve is substantially the same as or differs from the diameter of the fuel inlet by less than 3 mm.
9. The fuel gun of claim 1, further comprising a barrel assembly and a venturi valve, wherein the venturi valve is disposed proximate the barrel assembly and distal from the drive mechanism.
10. The fuel nozzle of claim 9, wherein the venturi valve is disposed in a barrel assembly cavity in the nozzle body.
11. The fuel nozzle as claimed in claim 10, wherein the venturi valve includes a venturi valve seat and a venturi valve core, and wherein a portion of the venturi valve seat which is not in contact with the venturi valve core is hollowed out.
12. The fuel nozzle of claim 10, further comprising: a vacuum passage communicating the venturi valve with an exterior of the fuel gun configured to replenish air to the venturi valve, wherein the vacuum passage is integral with the barrel of the barrel assembly.
13. The fuel nozzle of claim 12, further comprising: a pose device disposed below the barrel assembly in a portion of the vacuum channel.
14. The fuel nozzle of claim 1, wherein the inner surface of the fluid passage is a machined surface.
Technical Field
The invention relates to the field of refueling equipment, in particular to a refueling gun.
Background
With the development of science and technology and the improvement of living standard, automobiles enter more and more households. The increasing number of cars has led to an ever expanding construction of gasoline stations. In daily life, a gasoline station comprises: the system comprises a fuel storage tank arranged underground and a plurality of refueling devices connected with the fuel storage tank. Each refueling device fills oil into the automobile through a refueling gun on the refueling device.
For a long time, the oil vapors generated during the refueling process can be emitted into the air in or near the service station. However, most of oil products such as gasoline or diesel oil of a gas station are volatile and have certain toxicity, and the ignition point is low, so that the oil products are easy to ignite and have potential safety hazards. With the increasing environmental protection requirements, the requirements for the problems of environmental protection, safety and the like of the gas station are also higher and higher. In order to reduce oil vapor in and around a gas station as much as possible, an oil vapor recovery technique is popularized, and a fuel gun having an oil vapor recovery function is widely used. However, the existing oil gun with the oil gas recovery function has the defects of short development time, unreasonable structure and low flow rate, and influences the oil filling efficiency.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a fuel nozzle, which comprises: a gun body, comprising: the oil inlet, the oil outlet and a liquid channel for oil to pass through between the oil inlet and the oil outlet; a valve assembly disposed within the gun body configured to allow or prevent oil from passing through the liquid passage; the driving mechanism is arranged in the gun body and is configured to control the valve component to be opened or closed; the valve component comprises an oil circuit valve, the oil circuit valve comprises an oil circuit valve seat and an oil circuit valve core, when the oil circuit valve core is configured to abut against the oil circuit valve seat, oil is forbidden to pass through an oil liquid channel, wherein the radius of the oil circuit valve core is approximately the same as that of a liquid channel in front of the oil circuit valve, or the difference between the radius of the oil circuit valve core and the radius of the liquid channel in front of the oil circuit valve is smaller than.
The oil gun is characterized in that the part of the oil path valve seat, which is not contacted with the oil path valve core, is hollowed.
The fuel nozzle as described above, further comprising: and the diversion cone is arranged between the oil way valve core and the driving mechanism, and the diameter of the diversion cone is gradually reduced along the oil flowing direction.
The fuel nozzle as described above, wherein the nozzle body projects outwardly at a position close to the driving mechanism, configured to increase the width of the liquid passage in the nozzle body.
The fuel gun as described above, wherein the gun body further comprises a gas passage inside the gun body configured to recycle the collected oil vapor to the fuel dispenser; wherein the valve assembly comprises a gas circuit valve configured to allow or block oil vapor from passing through the gas passage; wherein, the oil circuit valve and the gas circuit valve are opened or closed simultaneously.
The oil gun comprises an oil gun body, an oil gun body and an oil gun body, wherein the oil gun body comprises an oil gun body and an oil gun body, the oil gun body comprises an oil gun body, an oil gun body and an oil gun body, the oil gun body comprises an oil gun body, an oil gun body and an oil gun; the outer ring wall of the air circuit valve seat is connected with the oil circuit valve seat, one end of the valve rod is connected with the oil circuit valve core, and the other end of the valve rod is positioned in the inner ring and can seal an air channel of the inner ring through configuration.
The fuel nozzle as described above, wherein the air passage is deflected in direction after passing through the air passage valve.
The fuel nozzle as described above, wherein the diameter of the outer ring of the gas path valve is substantially equal to the diameter of the oil inlet or the difference between the diameters is less than 3 mm.
The fuel gun as described above, further comprising a barrel assembly and a venturi valve, wherein the venturi valve is disposed proximate the barrel assembly and distal from the drive mechanism.
The fuel gun as described above, wherein the venturi valve is disposed in the barrel assembly chamber in the gun body.
The fuel nozzle as described above, wherein the venturi valve includes a venturi valve seat and a venturi valve element, and wherein a portion of the venturi valve seat which is not in contact with the venturi valve element is hollowed out.
The fuel nozzle as described above, further comprising: a vacuum passage communicating the venturi valve with an exterior of the fuel gun configured to replenish air to the venturi valve, wherein the vacuum passage is integral with the barrel of the barrel assembly.
The fuel nozzle as described above, further comprising: a pose device disposed in a portion of the lower vacuum channel of the barrel assembly.
The fuel filler gun as described above, wherein the inner surface of the liquid passage is a machined surface.
This application oil gun simple structure, easily assembly, fluid import diameter is big moreover, can be so that the oil gun has higher velocity of flow.
Drawings
Preferred embodiments of the present invention will now be described in further detail with reference to the accompanying drawings, in which:
FIGS. 1A-1F are schematic diagrams of a fuel gun according to one embodiment of the present application;
FIG. 2 is an exploded view of a fuel gun configuration according to one embodiment of the present application;
3A-3D are schematic views of a valve assembly according to one embodiment of the present application;
FIG. 4 is an exploded view of a valve assembly according to one embodiment of the present application;
FIGS. 5A-5D are schematic views of a drive mechanism according to one embodiment of the present application;
FIG. 6 is an exploded view of a drive mechanism according to one embodiment of the present application;
FIGS. 7A-7D are schematic views of a vacuum cap according to one embodiment of the present application;
FIG. 8 is an exploded view of a vacuum cap according to one embodiment of the present application;
FIGS. 9A-9D are schematic diagrams of a barrel assembly according to one embodiment of the present application; and
fig. 10 is an exploded view of a barrel assembly according to one embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the following detailed description, reference is made to the accompanying drawings that form a part hereof and in which is shown by way of illustration specific embodiments of the application. In the drawings, like numerals describe substantially similar components throughout the different views. Various specific embodiments of the present application are described in sufficient detail below to enable those skilled in the art to practice the teachings of the present application. It is to be understood that other embodiments may be utilized and structural, logical or electrical changes may be made to the embodiments of the present application.
The fuel gun (also called "fuel gun") is connected with the fuel dispenser through a rubber hose. The oil liquid enters the oil gun through the rubber tube, passes through an oil path valve and a Venturi valve in the oil gun, flows out of the gun barrel and is added into an oil tank of the vehicle. The opening and closing of the oil circuit valve can be controlled by a trigger on the oil gun through a driving mechanism. The vacuum cap is used to lock the drive mechanism. In the oil gas recovery function, the vapor of the oil liquid is recovered to the oiling machine through the gas channel and the gas path valve. In current nozzle design, setting up unreasonablely such as oil circuit valve, venturi valve and gas circuit valve causes the frequent transform of the runner of fluid, and the fluid flow environment is complicated, consumes the energy of fluid, causes the nozzle velocity of flow slow scheduling problem.
The application provides a new design's nozzle, further optimizes the runner that fluid passed through, and the energy loss of minimize fluid in the runner for this application nozzle possesses the high velocity of flow, makes the nozzle assembly and maintenance comparatively convenient simultaneously.
The technical solution of the present application is further explained by the following specific embodiments. It should be understood by those skilled in the art that the following descriptions are only provided for facilitating the understanding of the technical solutions of the present application, and should not be used to limit the scope of the present application.
FIGS. 1A-1F are schematic views of a fuel gun according to one embodiment of the present application. FIGS. 1A and 1B are perspective views of a fuel gun in different directions, showing the overall shape thereof; FIG. 1C is a sectional view taken along line A-A in FIG. 1A, and FIGS. 1D-1F are sectional views taken along lines B-B, C-C, and D-D in FIG. 1C, respectively, showing the cross-sectional shape of the fuel gun. FIG. 2 is an exploded view of a fuel gun configuration according to one embodiment of the present application.
As shown, the
As shown, the
In some embodiments, the gun body 110 further includes a plurality of chambers for housing the various components of the fuel nozzle described above, including but not limited to: a valve assembly chamber for receiving the
In some embodiments, the valve assembly chamber is aligned substantially parallel to the drive mechanism chamber, having substantially the same axis, to ensure that the liquid passages remain substantially in a consistent orientation. Further, the barrel assembly chamber is not substantially coaxial with the valve assembly chamber and the drive mechanism chamber, but is angled. Thus, the oil gun does not become too long to affect use. In some embodiments, the venturi valve is located in the barrel assembly chamber. The venturi valve is closer to the barrel assembly than the drive mechanism. The venturi valve and the drive mechanism are not substantially the same axis.
In some embodiments, the gun body 110 may further include a
In some embodiments, the gun body 110 may also include an
In some embodiments, the
In some embodiments, the fuel gun may further include a
In some embodiments, the
The technical solution of the present invention is further explained below by specific examples of each component. It should be understood by those skilled in the art that the description of these components is not intended to limit the scope of the present invention. Other components with similar functions can also be applied to this, and become part of the technical solution of the present invention.
Fig. 3A-3D are schematic views of a valve assembly according to one embodiment of the present application. FIGS. 3A and 3B are perspective views of the valve assembly in different directions, showing its overall shape; FIG. 3C is a side view of the valve assembly showing its side shape; fig. 3D is a cross-sectional schematic view of fig. 3C, showing its cross-sectional shape. Fig. 4 is an exploded view of a valve assembly according to one embodiment of the present application.
Referring to fig. 1D-1F, 3A-3D, and 4, the
Of course,
According to an embodiment of the present application, the
In some embodiments, the gas passage is directionally deflected at
In some embodiments, the
In some embodiments, the diameter of the fluid passage between the gun body 110 from the oil inlet to the oil circuit valve is substantially equivalent to the diameter of the oil inlet thread. For example, in the case where the inlet thread may be M34 × 1.5, the liquid passage diameter of the oil valve seat when not passing through the spool may be up to Φ 32mm, so that a high flow rate can be supported. In some embodiments, the radius of the oil path spool is about the same as or differs by less than 5mm from the radius of the liquid path prior to passing through the spool, thereby ensuring continuity of the liquid path. In some embodiments, the
In some embodiments, the outside of the
In some embodiments, the
In some embodiments, the end of the
In some embodiments, the
In some embodiments, the
In one embodiment, the diameter of the
In some embodiments, the
In some embodiments, the
In one embodiment, the
In some embodiments,
In some embodiments, the
During refueling, oil enters the
In the embodiments of the present invention, the
Fig. 5A-5D are schematic views of a drive mechanism according to one embodiment of the present application. FIGS. 5A and 5B are perspective views of the driving mechanism in different directions, respectively, showing the overall shape thereof; FIG. 5C is a side view of the drive mechanism showing its side shape; fig. 5D is a sectional view of the drive mechanism, showing its sectional shape. Fig. 6 is an exploded view of a drive mechanism according to one embodiment of the present application.
Referring to fig. 1D-1F, 5A-5D, and 6, the
According to one embodiment of the present invention, the fixed hub 510 is generally cylindrical in shape, and has a hollow interior, and a first end including an opening 511 for receiving the driving hub 520 therethrough such that it extends into the interior of the fixed hub 510. In some embodiments, the second end of the fixing sleeve 510 is tapered to facilitate the fixing sleeve to be assembled into the driving mechanism cavity of the gun body 110 without affecting the air pressure passage of the gun body 110, so that the air pressure passage is straight, thereby avoiding forming a complicated air pressure passage and increasing the difficulty in casting the gun body 110.
In some embodiments, the fixed collar 510 further includes
In some embodiments, the fixed hub 510 further includes a recess 514 for defining the location of the fixed hub. Referring to fig. 1D, the position of the fixed sleeve relative to the gun body can be limited or fixed by a limiting
In some embodiments, the fixed collar 510 may further include a slot 515 disposed at a bottom portion of the fixed collar 510 for receiving the stop rod 502 therethrough. Referring to fig. 5D, the fixing shaft sleeve 510, the driving shaft sleeve 520 and the driving shaft 530 may be limited by the limiting rod 502, so as to prevent the three from rotating axially and change the relative positions of the three. When the drive shaft 530 or the drive sleeve 520 moves within the fixed sleeve, the stop lever 502 also moves within the slot 515. The stop collar 502, or a portion thereof, may include threads that may be threadably coupled to the drive shaft. In some embodiments, the stop lever 502 may be fixedly connected to the drive shaft 530 in other manners. For example: clamping, bonding, interference assembly or transition assembly and the like.
In some embodiments, the fixed bushing 510 may further include an opening 516 disposed above the fixed bushing 510 and between the recess 514 and the first end of the fixed bushing 510 for receiving a catch pin socket of a vacuum cap.
In some embodiments, the fixed bushing 510 may further include a first seal 517 and a second seal 518; the first sealing ring 517 and the second sealing ring 518 are located at the first end of the fixed shaft sleeve 510, and the first sealing ring 517 is used for sealing the fixed shaft sleeve 510 and the gun body 110, so as to prevent oil from entering a driving mechanism cavity of the gun body 110 and further leaking out of the oil gun through the
According to one embodiment of the present invention, the drive sleeve 520 is generally cylindrical in shape throughout, and is hollow to receive the drive shaft 530 therethrough so that it extends into the interior of the drive sleeve. According to one embodiment of the present application, the drive sleeve 520 may include a
According to an embodiment of the present application, the second end of the driving collar 520 includes a protrusion 522, which is in contact with the guide cone 317 (e.g., in contact with the
In some embodiments, the drive collar 520 may further include an opening 524 disposed above the drive collar 520 near a middle portion of the drive collar 520 for receiving a catch pin of a vacuum cap catch pin holder. Accordingly, the corresponding location of the drive shaft also includes an opening 531, which is the same size as the opening 524. When the engagement pins of the vacuum cap engagement pin boss are dropped into the openings 524 and 531, the drive shaft is integrated with the drive shaft sleeve (i.e., the oil gun is "engaged"). At this point, the drive mechanism is in the enabled state, and the drive sleeve 520 follows the drive shaft 530 as the drive member 163 pushes the drive shaft 530. When the vacuum cap shift pin of the shift pin socket exits the opening 524 and/or the opening 531, the drive shaft is disengaged from the drive bushing. At this time, the driving mechanism is in a non-usable state, and when the driving member 163 pushes the driving shaft 530 to move, the driving shaft 530 relatively moves in the driving shaft sleeve 520, and cannot push the driving shaft sleeve 520 to move.
According to one embodiment of the present invention, the driving shaft 530 has an overall cylindrical shape. Near the end in contact with the drive sleeve 520, a dry test hole 532 is included at a location corresponding to the
In some embodiments, the
This application actuating mechanism is disconnect-type actuating mechanism, needs to lock it through special "gear engaging" locking mechanical system, makes it form an overall structure, pulls the trigger, just can make actuating mechanism promote the valve module. The separated driving mechanism limits the relative circumferential position of each part through the same limiting rod, so that the positions of all parts of the driving mechanism are accurate, and the assembly is convenient.
Fig. 7A-7D are schematic views of a vacuum cap according to one embodiment of the present application. FIGS. 7A and 7B are perspective views of the vacuum cap in different directions, respectively, showing the overall shape thereof; FIG. 7C is a side view of the vacuum cap showing its side shape; fig. 7D is a cross-sectional view of the vacuum cap, showing its cross-sectional shape. FIG. 8 is an exploded view of a vacuum cap according to one embodiment of the present application. The vacuum cap is mainly used for pre-engaging the driving mechanism (namely locking the driving mechanism) when oiling, so that the driving mechanism forms a whole and is in a usable state. When the oil addition is completed, the drive mechanism is taken out of gear (even if the drive mechanism is in a non-locked state).
Referring to fig. 1D-1F, 7A-7D, and 8, the
In some embodiments, the outside or a portion of the outside of the
In some embodiments, the
In some embodiments, the side of the
In some embodiments, the
In some embodiments, the
According to one embodiment of the present application, the
In some embodiments, the vacuum cap may further include a self-sealing
In some embodiments, the vacuum cap may further include a
In some embodiments, the vacuum cap may further include a jump-
In some embodiments, the vacuum cap may further include a
In some embodiments, the vacuum cap may further include a
The working process of the vacuum cap is roughly as follows: for the oil part, when oil enters the vacuum cap, the piston is pushed downwards by the oil pressure, and then the spring seat is pushed, and the self-sealing spring and the gun-jumping spring are compressed; the gun jumping spring can continuously push the diaphragm to move downwards, so that the gear engaging pin of the gear engaging pin seat can fall into the driving mechanism, and the driving mechanism is locked; when oil leaves the vacuum cap, the self-sealing spring pushes the spring seat upwards without the pressure of the oil, so that the piston is pushed upwards, the diaphragm can be lifted up, the gear-engaging pin seat is driven to move upwards, the gear-engaging pin is separated from the driving mechanism, and the state of the driving mechanism is changed into a non-locking state; for the gas part, when gas between the piston and the diaphragm is extracted, the diaphragm moves upwards, the gun jump spring is compressed, the diaphragm is lifted up, the gear engaging pin seat is driven to move upwards, the gear engaging pin is separated from the driving mechanism, and the state of the driving mechanism is changed into a non-locking state.
Fig. 9A-9D are schematic diagrams of a barrel assembly according to one embodiment of the present application. Fig. 9A and 9B are perspective views of the barrel assembly in different directions, respectively, showing the overall shape thereof; fig. 9C is a side view of the barrel assembly showing its side shape; fig. 9D is a cross-sectional view of the barrel assembly showing its cross-sectional shape. Fig. 10 is an exploded view of a barrel assembly according to one embodiment of the present application.
Referring to fig. 1D-1F, 9A-9D, and 10, barrel assembly 150 includes a venturi valve 910, a barrel 920, and a gas tube 930. Where venturi valve 910 is disposed at one end of barrel 920, the other end of barrel 920 may be inserted into the fuel tank of the vehicle. The air pipe 930 is sleeved outside the gun pipe 920 and used for recovering oil vapor. The air tube 920 is connected to the air passage at one end and may also extend into the vehicle's tank at the other end and be slightly open to the outside for recovery of oil vapors.
In some embodiments, air tube 930 is secured to barrel 920 or outside venturi valve 910. For example, air pipe 930 is fixed to venturi valve 910 by a threaded connection. In some embodiments, the trachea may also be connected in other ways, such as: welded, snapped, transition fit, etc., to barrel 920 or venturi valve 910.
In some embodiments, venturi valve 910 includes a valve seat 911 and a valve plug 912, wherein the valve seat is connected to the fluid passage of gun body 110 at one end and to the barrel at the other end. The spool 912 can act on the valve seat 911 to block the passage of oil. In some embodiments, the part of the valve seat 911 not in contact with the valve plug 912 is provided with a hollow part to increase the cross-sectional area of oil passage in the venturi valve, so that the liquid passages of the liquid in the oil gun are as consistent as possible, which is beneficial to reducing the energy loss of the oil and increasing the flow rate of the oil gun.
In some embodiments, the valve seat 911 is a split valve seat, i.e., the valve seat comprises a plurality of spliced portions. For example: the valve core is in contact with one part and is not in contact with the other part, and the valve core are connected into a whole through threads. Such an arrangement facilitates assembly of the venturi valve, as well as facilitating maintenance and replacement of the fitting.
According to one embodiment of the present application, the contact surface of the spool 912 and the valve seat 911 is a slope. When oil presses the valve core to leave the valve seat, the oil passes through the valve core 912 to generate a venturi effect, and vacuum is formed. In some embodiments, the valve seat 911 includes one or more vacuum holes 913 communicating the contact between the valve seat 911 and the valve plug 912 and the outside of the valve seat for supplying air to compensate for the vacuum created by the venturi effect of the venturi valve and maintain the balance of air pressure.
In some embodiments, there are two channels for external air supply to the venturi valve: one is fed from the vacuum cap cavity via the
In some embodiments, referring to fig. 1E, the
In some embodiments, a plurality of sealing
Further, the barrel 920 is a bent round tube, which may include a vacuum channel 921, the length of the vacuum channel 921 is the same as the length of the barrel, is disposed at the bottom inside the barrel (with the direction of the barrel disposed in fig. 1E as a reference direction), and has one end communicating with the
According to an embodiment of the present application, the connecting
In some embodiments, the gas tube 930, which is connected to the venturi valve 910 at one end and flares at the other end, may be used to collect oil vapors from the gun and return the oil vapors to the fuel dispenser through the gas passage of the gun body. For example, the air tube includes an opening 932 disposed below the air tube 930 and corresponding to the position of the air passage of the gun body 110. In some embodiments, the air tube 932 is a split tube, i.e., the air tube is made from multiple sections that are joined together. For example: collect the gaseous part of oil tank, be partly with the rifle body junction, the two can link into an integrated entity through a plurality of screws, is favorable to the assembly of barrel subassembly, is convenient for change the maintenance.
Further, the barrel assembly 150 may further include a gas skirt 950 that fits over the exterior of the gas tube and fits over the oil fill port of the oil tank to prevent oil vapor from escaping into the air and oil from splashing out of the oil tank. According to one embodiment of the present application, the gas skirt 950 is provided with a plurality of corrugations to facilitate buffering the force of the oil gun extending into the oil tank. According to one embodiment of the present application, the material of the gas collection hoods 950 is a flexible or partially flexible material. For example: rubber, silicone, plastic, etc.
The foregoing details describe the various components of the oil gun of the present application. As will be appreciated by those skilled in the art, there are only two ways of refueling available, namely, rate-rated refueling and top-up refueling. The operation of the above-mentioned components of the oil gun will be described in two ways.
In one case, during a rated load, the fuel dispenser supplies oil through the hose to the valve assembly of the gun after the amount of charge has been input to the dispenser. Because the valve core of the oil path valve is not opened, oil cannot flow into the liquid channel of the gun body but flows into the vacuum cap from the oil pressure channel of the gun body, the piston is pushed to move towards the driving mechanism, and then the hanging pin can be hung in the driving mechanism. At this time, if the trigger is pulled, the driving sleeve moves toward the valve assembly along with the driving shaft, and the valve core of the oil path valve can be opened. Further, the oil can push the valve core of the venturi valve along with the liquid channel of the gun body to flow into the venturi valve and then enter the gun barrel to flow into the oil tank after flowing through the venturi valve. When the preset limit is added or is added quickly, the oiling machine stops oil outlet, or the oil outlet amount is reduced, and the oil pressure in the rubber hose is reduced. The restoring force of a self-sealing spring in the vacuum cap is larger than the pressure of oil liquid, and the piston can be pushed to move towards the direction far away from the driving mechanism, so that the gear engaging pin is separated from the driving mechanism. The valve core of the oil valve is pushed by the return spring to return to the position of closing the oil valve. The oil can not pass through the oil circuit valve and stops oiling. Thereby, rated refueling is achieved.
In some embodiments, the contact area with oil is increased by adding a protrusion or a recess between the cap body of the vacuum cap and the piston. When the oil hydraulic pressure is reduced, due to the friction force between oil liquid, the situation that the gear engaging pin is quickly separated from the driving mechanism due to the fact that the oil hydraulic pressure changes too fast is prevented, and therefore the valve core of the oil path valve is pushed to reset by the reset spring, and the oil gun is enabled to jump (namely the oil gun stops oil discharging when the preset amount is not added). In a further embodiment, the oil in the oil passage valve enters the oil pressure passage through a clearance between the oil passage valve and the gun body. The clearance between the two is small, so that the friction force between the two and the oil liquid is increased, and the phenomenon that the gun jumps due to too fast pressure change is prevented.
In another case, refueling is stopped when the tank is full. After the oiling machine provides fluid to the valve module of nozzle through the rubber tube, because the case of oil way valve is not opened, fluid can not flow in the fluid passage of rifle body, consequently can flow into the vacuum cap by the oil pressure passageway of rifle body, promote the piston to the direction motion of actuating mechanism, and then can hang the catch pin in actuating mechanism, the trigger is pulled, the drive axle sleeve can move to the valve module along with the drive shaft together, and then can open the case of oil way valve, fluid can flow to venturi valve department along with the fluid passage of rifle body, promote venturi valve's case, flow through venturi valve and get into the barrel and flow into in the oil tank. The venturi effect is created when the oil passes through the venturi valve which feeds the air in the tank through the vacuum passage of the gun body and the vacuum passage of the gun barrel. When oil is submerged in the vacuum port of the barrel, oil is drawn into the venturi valve. Therefore, the venturi valve cannot supply air from the vacuum channel, and air between the diaphragm and the cap body in the vacuum cap can be sucked out through the gun body air pressure channel. When the venturi valve sucks the air between the cap body and the diaphragm, the diaphragm can be sucked to move in the direction away from the driving mechanism, and then the gear engaging pin can be driven to synchronously act to be separated from the driving mechanism. The valve core of the oil way valve can be pushed by the reset spring to be restored to the position where the oil way valve is closed, and oil can not pass through the oil way valve. Therefore, the refueling of the full fuel tank is stopped.
In some embodiments, the oil gun is simple and straight as much as possible in the design of a channel through which oil flows, the oil enters from an oil inlet of the gun body and flows out from the gun barrel, and the flowing direction is changed into 135-150 degrees, so that the oil has low energy loss in the flowing process, is not easy to generate vortex, and can effectively improve the flow rate of the oil gun.
In some embodiments, the oil gun has the advantages that the inner part of a channel through which oil flows is a machined surface or an injection molding surface, the surface roughness is low, the friction force between the oil and the surface of a runner is reduced, and the flowing speed of the oil gun is increased. Further, the nozzle of this application still provides the biggest cross sectional area that overflows for fluid, under the restraint of standard import screw thread, the valve module is cylindricly, and does not change the area of overflowing of fluid, and the disk seat fretwork of venturi valve and oil circuit valve can further improve the cross sectional area that overflows of fluid, and the part at rifle body installation actuating mechanism, because actuating mechanism has taken partial fluid passageway, consequently, this application rifle body is outside outstanding at actuating mechanism part, thereby the supplementary runner that occupies fluid, make fluid overflow sectional area equal with the valve module part, avoid forming the area of overflowing bottleneck, loss fluid energy. According to an example of the application, the flow rate of the oil gun of the application can reach 44L/min-48L/min under the pressure of 0.6atm, and the flow rate of the oil gun of the prior art is only 18L/min-20L/min under the same pressure. Therefore, under the same condition of pressure, the flow speed of the oil gun is improved by 2.2-2.6 times compared with the flow speed of the traditional oil gun.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the scope of the present invention, and therefore, all equivalent technical solutions should fall within the scope of the present invention.
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