Quantitative elliptical gear metering gun
By combining an elliptical gear metering gun with a Hall sensor and a solenoid valve, the problems of inaccurate metering and insufficient self-sealing function of existing fuel nozzles have been solved, achieving high-precision metering and self-sealing, reducing production and usage costs, and meeting diverse needs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-13
- Publication Date
- 2026-03-24
AI Technical Summary
Existing fuel nozzles lack precise metering and self-sealing functions, have complex structures and high costs, and cannot meet diverse usage needs.
The metering gun uses an elliptical gear, combined with a Hall sensor and an electromagnet. The dense tooth design of the elliptical gear enables accurate sensing of flow information. The Hall sensor and solenoid valve control the flow of the medium, and the self-sealing mechanism achieves accurate metering and self-sealing functions. The structure is simple.
It achieves high-precision metering and self-sealing functions for refueling nozzles, reduces production and usage costs, extends service life, and meets diverse usage needs.
Smart Images
Figure CN224030648U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a refueling gun, in particular to a kind of quantifiable elliptic gear metering gun. BACKGROUND
[0002] Refueling gun is the terminal of refueling machine output in gas station, i.e. the part of contacting automobile oil tank. Generally, self-sealing refueling gun and composite refueling gun are commonly used. The existing quantitative gun is not accurate by using turbine metering, and realizes quantification by micro motor and cam. This technology cannot realize accurate quantification, and the structure is complex (this technology is basically eliminated in market). In addition, there is also elliptic gear metering gun in market, but it does not have the functions of quantification and self-sealing. There is lack of refueling gun product meeting various use requirements. UTILITY MODEL CONTENTS
[0003] In view of the existing technical deficiencies, the utility model provides a kind of quantifiable elliptic gear metering gun.
[0004] In order to realize the above-mentioned purpose, the utility model takes the technical scheme that a kind of quantifiable elliptic gear metering gun, including gun body and the main valve, auxiliary valve and oil outlet channel being arranged in it, the gun body includes the gun nozzle and the gun body integrally connected, the gun body is also equipped with self-sealing hole and the negative pressure channel that communicates gun body at gun nozzle, the main valve is arranged at the negative pressure channel and communicates the place of oil outlet channel, the auxiliary valve is arranged at the gun nozzle and the gun body connection place of oil outlet channel, the negative pressure channel is also equipped with the auxiliary cavity that communicates oil outlet channel, the oil outlet channel is also equipped with the exhaust cavity that is close to auxiliary cavity, the negative pressure channel is also equipped with the self-sealing mechanism that links the opening and closing action of main valve, the gun body is also equipped with metering chamber in oil outlet channel, the metering chamber is also equipped with elliptic gear, the gun body is equipped with controller and hall sensor corresponding to the position of elliptic gear, the elliptic gear is also equipped with magnet that changes magnetic field, the gun body is also equipped with electromagnet corresponding to the position of self-sealing mechanism, the self-sealing mechanism includes the diaphragm that links the opening and closing of main valve, the diaphragm is also equipped with the iron sheet that is magnetically attracted with electromagnet.
[0005] The oil outlet channel is equipped with oil outlet and positioning ring column for auxiliary valve installation at the gun nozzle and the gun body connection place, the auxiliary valve is inserted and limited between positioning ring column, and the auxiliary valve reciprocatingly moves in axial direction relative to positioning ring column.
[0006] The auxiliary valve is equipped with ring groove corresponding to positioning ring column, and the auxiliary valve is equipped with insertion column in the central end face of one side of ring groove, the positioning ring column is equipped with spring that elastically abuts auxiliary valve.
[0007] The controller is also equipped with battery.
[0008] It also includes trigger, and the trigger is linked and assembled with self-sealing mechanism.
[0009] The utility model discloses a kind of quantifiable elliptic gear metering guns provided by the utility model have quantitative function, metering function, self-sealing function, and simple structure, long service life, can satisfy varied use demand, reduce production and use cost, with practicality and economy. BRIEF DESCRIPTION OF DRAWINGS
[0010] Figure 1 It is cross section structure schematic diagram of the utility model;
[0011] Figure 2 It is cross section right half structure schematic diagram of the utility model;
[0012] Figure 3 It is cross section left half structure schematic diagram of the utility model;
[0013] Figure 4 It is three-dimensional structure schematic diagram of the utility model. DETAILED DESCRIPTION
[0014] As Figures 1-4As shown, a quantitative elliptical gear 4 metering gun comprises a gun body and a main valve, a secondary valve 7 and an oil outlet channel arranged in the gun body, the gun body comprises a gun nozzle 1 and a gun barrel connected integrally, the gun body is further provided with a self-sealing hole and a negative pressure channel communicating with the gun barrel at the gun nozzle 1, the main valve is arranged at the position where the negative pressure channel communicates with the oil outlet channel, the secondary valve 7 is arranged at the position where the gun nozzle 1 of the oil outlet channel is connected with the gun barrel, the negative pressure channel is further provided with an auxiliary channel communicating with the oil outlet channel, the oil outlet channel is further provided with an exhaust channel close to the auxiliary channel, the negative pressure channel is further provided with a self-sealing mechanism 6 for linkage with the opening and closing action of the main valve, the gun body is further provided with a metering chamber in the oil outlet channel, the metering chamber is further provided with an elliptical gear 4, the gun body is provided with a controller 2 and a Hall sensor corresponding to the position of the elliptical gear 4, the elliptical gear 4 is further provided with a magnet for changing the magnetic field, the gun body is further provided with an electromagnet 5 corresponding to the position of the self-sealing mechanism 6, the self-sealing mechanism 6 comprises a diaphragm connected with the opening and closing of the main valve, and the diaphragm is further provided with an iron sheet magnetically attracted to the electromagnet 5. The oil outlet channel controls the flow of medium out through the main valve, and then further controls through the secondary valve 7. The secondary valve 7 acts on the cooperation of the self-sealing hole and the self-sealing mechanism 6, which is the same as the traditional refueling gun mechanism and will not be described in detail here. The Venturi effect is used to achieve negative pressure and drive the self-sealing mechanism 6 to act to achieve full oil self-sealing. More importantly, an elliptical gear 4 is arranged in the embodiment, the tooth shape of which is relatively dense, and the magnetic attraction sensing of the Hall sensor is conducive to collecting flow information and converting it into a signal and further precise control. Furthermore, the opening and closing of the main valve can be actively controlled through the electromagnetic valve, which is also controlled by magnetic attraction, and is specifically arranged on the diaphragm and the iron sheet thereon. It should be noted that metering is the calculation of the flow of output medium, and quantification is the control of the total output, and self-sealing is the self-cutting of the full oil state. The negative pressure channel can exhaust the air tank when it is not full, and automatically cut off when it is full, which is a mature technical means.
[0015] The oil outlet channel is provided with an oil outlet and a positioning ring column 8 for installing the secondary valve 7 at the position where the gun nozzle 1 is connected with the gun barrel, the secondary valve 7 and the positioning ring column 8 are inserted and limited, and the secondary valve 7 reciprocally moves in the axial direction relative to the positioning ring column 8. The secondary valve 7 is provided with a ring groove corresponding to the positioning ring column 8, and the secondary valve 7 is provided with an insertion column 9 at the central end face of the side where the ring groove is located, and the positioning ring column 8 is provided with a spring 10 which is elastically abutted against the secondary valve 7. Different from the traditional structure, the elastic connection mode is used to drive the secondary valve 7 to lock the oil outlet in the embodiment. The insertion positioning and the matching structure can not only ensure accurate opening and closing, but also improve the structural strength and enhance the service life.
[0016] The controller 2 is further provided with a battery 3, which is convenient to use and safe by self power supply, and is beneficial to determine the insulation tightness.
[0017] Working principle and step method: the circuit board collects the data of the oval gear 4 through a Hall, realizes metering and realizes quantitative feeding; the number of turns is input in the control panel, and after the input number of turns is reached, the controller 2 gives a signal to the electromagnetic valve; the electromagnetic valve sucks the membrane of the jump gun mechanism to realize high-precision quantitative feeding.
[0018] In the description of the utility model, it is necessary to explain that the orientation or position relation indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relation shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model, and meanwhile the basic principle, main features and advantages of the utility model are shown and described above, and the skilled in the art should understand.
Claims
1. A quantifiable oval gear metering gun comprising a gun body and a main valve, a sub valve and an oil outlet channel arranged in the gun body, the gun body comprising a gun nozzle and a gun body connected integrally, characterized in that, The gun body is further provided with a self-sealing hole at the muzzle and a negative pressure cavity channel communicating with the gun body, the main valve is arranged at the negative pressure cavity channel communicating with the oil outlet channel, the auxiliary valve is arranged at the connection between the muzzle and the gun body of the oil outlet channel, the negative pressure cavity channel is further provided with an auxiliary cavity channel communicating with the oil outlet channel, the oil outlet channel is further provided with an exhaust cavity channel close to the auxiliary cavity channel, the negative pressure cavity channel is further provided with a self-sealing mechanism for linkage with the opening and closing action of the main valve, the gun body is further provided with a metering chamber in the oil outlet channel, the metering chamber is further provided with an oval gear, the gun body is provided with a controller and a Hall sensor corresponding to the position of the oval gear, the oval gear is further provided with a magnet changing the magnetic field, the gun body is further provided with an electromagnet corresponding to the position of the self-sealing mechanism, the self-sealing mechanism comprises a diaphragm linked with the opening and closing of the main valve, and the diaphragm is further provided with an iron sheet magnetically attracted to the electromagnet.
2. A metering gun with a quantifiable oval gear according to claim 1, characterized in that, The oil outlet channel is provided with an oil outlet at the connection between the muzzle and the gun body and a positioning ring column for installing the auxiliary valve, the auxiliary valve is inserted and limited between the positioning ring column, and the auxiliary valve reciprocally moves in the axial direction relative to the positioning ring column.
3. A metering gun with a quantifiable oval gear as claimed in claim 2, characterized in that The auxiliary valve is provided with a ring groove corresponding to the positioning ring column, and the auxiliary valve is provided with an insertion column at the central end face of the side where the ring groove is located, and the positioning ring column is provided with a spring abutting against the auxiliary valve.
4. A metering gun with a quantifiable oval gear according to claim 1, characterized in that, The controller is further provided with a battery.
5. A metering gun with a quantifiable oval gear as claimed in claim 1, characterized in that, A trigger is further included, and the trigger is linked and assembled with the self-sealing mechanism.