Automatic calibrating instrument for metering of oiling machine

Abstract

The invention discloses an automatic calibration instrument for metering of an oiling machine, and relates to the field of calibration of oiling machines. Comprising an oil filling port, an oil guide pipe connected to the bottom of the oil filling port, a metering tank connected to the bottom of the oil guide pipe, a measuring pipe installed on one side of the oil guide pipe, a measuring caliper installed on one side of the measuring pipe, an oil discharging pipe installed at the bottom of the metering tank, an oil discharging valve installed on the oil discharging pipe and a barrel cover arranged on the outer side of the oil filling port. A handle is mounted at the top of the barrel cover; a connection mechanism; the oil scraping mechanism is installed on the cylinder cover, and the oil scraping mechanism comprises a disc, a plurality of telescopic assemblies installed outside the disc, a plurality of material scraping blocks installed on the telescopic assemblies correspondingly, and a driving assembly used for driving the disc to rotate while moving; according to the oiling machine metering automatic verification instrument, the time for workers to wait for oil in the verification instrument to completely flow is saved, the oiling machine metering verification speed of the workers is further increased, and the interior of the verification instrument can be conveniently cleaned.

Description

Technical Field

[0001] The invention relates to a fuel dispenser calibration technology, and in particular to a fuel dispenser metering automatic calibrator. Background Art

[0002] With the rapid development of my country's road traffic, gas stations are spread all over the highways. Therefore, the inspection of gas pumps has become a heavy task for the quality and technical supervision departments. In order to ensure the accurate measurement of gas pumps at gas stations, each gas pump needs to be regularly inspected by the national metrology and calibration agency, and gas stations also need to make an appointment to calibrate each gas pump at regular intervals. The inspection and self-calibration are both carried out using the comparison method of the standard calibrator. That is, the oil from the gas pump is pumped into the calibrator, and the accurate condition of the gas pump is verified by comparing the oil level indication of the gas pump with the liquid level display of the calibrator to determine whether the gas pump is qualified or needs adjustment and repair.

[0003] A Chinese utility model patent with the announcement number CN205802992U discloses a metering container of a tanker calibration device with automatic adjustment level, which can realize automatic level adjustment of the liquid level in the metering container, and no manual level adjustment is required. It is easy to operate, improves the calibration efficiency, and has high adjustment accuracy. The metering container includes a metering container, and a bracket supporting the metering container is arranged at the lower end of the metering container. The bracket is characterized in that: the bracket includes a pillar connected to the metering container, a bottom platform is arranged at the lower end of the pillar, and at least three feet are arranged at the lower end of the bottom platform, the feet include a movable foot and at most one fixed foot, a lifting mechanism is arranged on the movable foot, the lifting mechanism is connected to a motor driving the lifting mechanism, an electronic measuring level adjuster is arranged on the bottom platform, and the electronic measuring level adjuster is electronically connected to the motor; With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: at least three metering calibrations of the same volume of a gas station are required, and between two adjacent metering calibrations, the fuel inside the calibrator needs to be completely discharged, which requires a long waiting time, further affecting the speed at which the staff can perform metering calibration of the gas station. For this reason, this scheme proposes an automatic metering calibrator for a gas station. Summary of the invention

[0004] The purpose of the present invention is to provide a fuel dispenser metering automatic calibrator to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a fuel dispenser metering automatic calibrator, comprising a fuel filling port, an oil guide pipe connected to the bottom of the fuel filling port, a metering tank connected to the bottom of the oil guide pipe, a measuring pipe installed on one side of the oil guide pipe, a measuring caliper installed on one side of the measuring pipe, an oil discharge pipe installed at the bottom of the metering tank, and an oil discharge valve installed on the oil discharge pipe, wherein the measuring pipe and the oil guide pipe are arranged parallel to each other, and the measuring pipe is respectively connected to the metering tank and the fuel filling port, and further comprising a cylinder cover, which is arranged on the outside of the fuel filling port, and a handle is installed on the top of the cylinder cover; A connecting mechanism, which is used to connect the cylinder cap and the fuel filler port together; The oil scraping mechanism is installed on the cylinder cover, and the oil scraping mechanism includes a disc, a plurality of telescopic components installed outside the disc, a plurality of scraping blocks respectively installed on the plurality of telescopic components, and a driving component for driving the disc to rotate and move at the same time.

[0006] Furthermore, the connecting mechanism includes a plurality of positioning strips fixedly connected to the outer wall along the height direction of the fuel filler port, a plurality of positioning grooves opened on the inner wall along the height direction of the cylinder cover, bolts threadedly connected to the inside of the cylinder cover along the radial direction, and screw holes opened on the outer wall along the radial direction of the fuel filler port, the plurality of positioning strips and the plurality of positioning grooves are distributed in a circular array with the axis of the fuel filler port as the center, the plurality of positioning strips are respectively matched with the plurality of positioning grooves, and the bolts are arranged through the cylinder cover and cooperate with the screw holes.

[0007] Furthermore, there are four telescopic components and four scraper blocks, which are distributed in a circular array with the disc as the center. The telescopic component includes a multi-section telescopic rod fixedly connected to the outer wall of the disc and a first spring sleeved on the outside of the multi-section telescopic rod, the other end of the multi-section telescopic rod is fixedly connected to the inner wall of the scraper block, one end of the first spring is fixedly connected to the disc, and the other end of the first spring is fixedly connected to the inner wall of the scraper block.

[0008] Furthermore, the scraper block is an arc-shaped structure, the outer side wall of the scraper block is made of rubber, and a plurality of combined grooves are sequentially opened inside the scraper block along its arc-shaped trajectory, the combined grooves include an oil guide groove opened at the top of the scraper block along the radial direction and a reflux groove opened inside the scraper block along the height direction, the reflux groove is an inverted Z-shaped structure, and the reflux groove is connected with the oil guide groove, and the top and bottom of the scraper block are both provided with inclined grooves along its arc-shaped trajectory.

[0009] Furthermore, the driving assembly includes a motor installed on the top of the barrel cover, a first gear fixed to one end of the motor output shaft extending to the inside of the barrel cover, a first screw fixed to the inner wall of the top of the barrel cover along the height direction of the barrel cover, a second gear sleeved on the outside of the first screw and two driving rods fixed to the bottom of the second gear, the first gear is meshed with the second gear, the two driving rods are symmetrically arranged on both sides of the first screw and are parallel to the first screw, the disc is threaded on the outside of the first screw, and the disc is also slidably sleeved on the outside of the two driving rods, and the second gear is installed on the inner wall of the top of the barrel cover through a bearing.

[0010] Furthermore, a horizontal adjustment mechanism is installed at the bottom of the metering tank, and the horizontal adjustment mechanism includes a plurality of column feet fixedly connected to the bottom of the metering tank along the height direction, a plurality of second screws respectively screwed into the plurality of column feet, and a plurality of ground feet respectively fixed to the bottom ends of the plurality of second screws, and the plurality of column feet are distributed in a circular array with the axis of the metering tank as the center.

[0011] Furthermore, a vibration mechanism is installed inside the barrel cover, and a capacity adjustment mechanism is installed on the top of the metering tank. The vibration mechanism includes a linkage block installed outside the two driving rods, a plurality of vibration plates installed on the outer wall of the linkage block, a plurality of second springs installed on the inner wall of the top of the barrel cover, and a plurality of knocking balls respectively installed at the bottom of the plurality of second springs. The linkage block is a circular structure, and the linkage block is sleeved on the outside of the first screw rod. The plurality of vibration plates and the plurality of second springs are distributed in a circular array with the first screw rod as the center, and the knocking balls cooperate with the vibration plates.

[0012] Furthermore, an oil filling port is provided on the top of the cylinder cover, and a sealing plug is installed inside the oil filling port.

[0013] Furthermore, the capacity adjustment mechanism includes a measuring cylinder installed on the top of the metering tank along the height direction, a piston installed inside the measuring cylinder, and a third screw threaded inside the measuring cylinder along the height direction, the bottom end of the third screw is rotatably connected to the top of the piston, the top end of the third screw extends to the outside of the measuring cylinder, and an exhaust pipe is installed on one side of the measuring cylinder.

[0014] Compared with the prior art, the automatic metering calibrator for a fuel dispenser provided by the present invention has the following beneficial effects: 1. After the metering calibration of the fuel dispenser is completed, the oil scraping mechanism is installed. Through the cooperation of the various components of the oil scraping mechanism, the four scraping blocks are driven to rotate and move downward. In this process, the residual oil on the oil guide pipe and the inner wall of the metering tank is quickly scraped downward in turn, saving the time for the staff to wait for the oil inside the calibrator to flow out, and further improving the speed of the staff's metering calibration of the fuel dispenser; 2. After the tester is used, the scraper mechanism can be used with the cleaning fluid to clean the inside of the tester, preventing the fuel from remaining inside and easily adhering to dust and impurities. In addition, it solves the problem of residual stains in the corners of the tester that are difficult to clean. 3. When the scraper mechanism is fixedly installed on the inside of the refueling port, the oil guide pipe and the metering tank, the process of installing the scraper mechanism after the metering verification of the fuel dispenser is completed can be omitted, and the oil can be quickly discharged through the scraper mechanism. In this process, the linkage block, the driving rod, the disc and the first screw rod are continuously slightly vibrated through the cooperation of the scraper mechanism and the components of the vibration mechanism, so that the oil on the driving rod, the disc and the first screw rod can be quickly discharged downward. In addition, the volume occupied by the relevant components in the scraper mechanism can be compensated by the capacity adjustment mechanism, avoiding the problem of affecting the metering verification result of the fuel dispenser; 4. Through the coordination of the various components of the capacity adjustment mechanism and by adjusting the oil storage volume inside the measuring cylinder, the metering of the fuel dispenser can be calibrated for different volumes, thereby eliminating the need to carry calibrators of various specifications to calibrate the metering of the fuel dispenser. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 A schematic diagram of the overall structure provided in Embodiment 1 of the present invention; Figure 2 A schematic diagram of the structure of the connecting mechanism and the oil scraping mechanism provided in the first embodiment of the present invention; Figure 3 A schematic diagram of the structure of an oil scraping mechanism provided in Embodiment 1 of the present invention; Figure 4 A schematic diagram of the structure of a scraper block provided in Embodiment 1 of the present invention; Figure 5 The first embodiment of the present invention provides Figure 4 A schematic diagram of the structure enlargement in the middle; Figure 6 A schematic diagram of the structure of the telescopic assembly in the extended state provided in the first embodiment of the present invention; Figure 7 A schematic diagram of the connection mechanism structure provided in Embodiment 1 of the present invention; Figure 8 A schematic diagram of the structure of a horizontal adjustment mechanism provided in Embodiment 2 of the present invention; Fig. 9 A schematic diagram of the overall structure provided for Embodiment 3 of the present invention; Fig.10 A schematic diagram of the structure of a vibration mechanism provided in Embodiment 3 of the present invention; Fig.11 This is a schematic diagram of the capacity adjustment mechanism structure provided in Embodiment 3 of the present invention.

[0017] Description of reference numerals: 1. Oil filling port; 2. Oil guide pipe; 3. Measuring tank; 4. Measuring tube; 5. Measuring caliper; 6. Oil drain pipe; 7. Oil unloading valve; 8. Cylinder cover; 9. Disc; 10. Positioning strip; 11. Positioning groove; 12. Bolt; 13. Screw mouth; 14. Multi-section telescopic rod; 15. First spring; 16. Oil guide groove; 17. Reflux groove; 18. Inclined groove; 19. Motor; 20. First gear; 21. First screw; 22. Second gear; 23. Driving rod; 24. Bearing; 25. Second screw; 26. Foot; 27. Linkage block; 28. Vibrating plate; 29. ​​Second spring; 30. Knocking ball; 31. Sealing plug; 32. Measuring cylinder; 33. Piston; 34. Third screw; 35. Exhaust pipe; 36. Scraper block; 37. Column foot; 38. Handle. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0019] Embodiment 1: See also Figure 1-7 A fuel dispenser metering automatic calibrator includes a fuel inlet 1, an oil guide pipe 2 connected to the bottom of the fuel inlet 1, a metering tank 3 connected to the bottom of the oil guide pipe 2, a measuring pipe 4 installed on one side of the oil guide pipe 2, a measuring caliper 5 installed on one side of the measuring pipe 4, an oil discharge pipe 6 installed at the bottom of the metering tank 3, and an oil unloading valve 7 installed on the oil discharge pipe 6. The measuring pipe 4 and the oil guide pipe 2 are arranged in parallel with each other, and the measuring pipe 4 is connected to the metering tank 3 and the fuel inlet 1 respectively. The staff injects a set volume of fuel into the fuel inlet 1 through a fuel gun, and the working The personnel measure the oil outlet temperature at the oil outlet of the refueling gun, and the error caused by stability can be calculated by combining the temperature of the calibration instrument. The fuel inside the refueling port 1 enters the metering tank 3 and the measuring tube 4 through the oil guide pipe 2. The actual fuel volume can be measured by reading the number of the measuring tube 4 with the measuring caliper 5. Combined with the error caused by the temperature difference, it is judged whether the metering error of the refueling machine is within the allowable range of relevant national regulations. After the measurement is completed, the oil unloading valve 7 is opened to discharge the oil inside the metering tank 3 through the oil discharge pipe 6. After the oil is completely discharged, the above operation is repeated twice; It also includes a cylinder cover 8, which is arranged on the outside of the refueling port 1. A handle 38 is installed on the top of the cylinder cover 8. The handle 38 is arranged to facilitate lifting the cylinder cover 8; A connecting mechanism, which is used to connect the cylinder cover 8 with the fuel filler port 1, and includes a plurality of positioning strips 10 fixed to the outer wall of the fuel filler port 1 along the height direction, a plurality of positioning grooves 11 opened on the inner wall of the cylinder cover 8 along the height direction, a bolt 12 threadedly connected to the inside of the cylinder cover 8 along the radial direction, and a screw hole 13 opened on the outer wall of the fuel filler port 1 along the radial direction. The plurality of positioning strips 10 and the plurality of positioning grooves 11 are distributed in a circular array with the axis of the fuel filler port 1 as the center, and the plurality of positioning strips 10 are respectively matched with the plurality of positioning grooves 11, and the bolt 12 is arranged through the cylinder cover 8 and matched with the screw hole 13. When the oil in the metering tank 3 is discharged, the cylinder cover 8 is covered on the outside of the fuel filler port 1. In this process, the positioning strips 10 are aligned with the positioning grooves 11 and inserted, and the bolt 12 is then aligned with the screw hole 13. The cylinder cover 8 is connected to the fuel filler port 1 by rotating the bolt 12 to enter the inside of the screw hole 13; The oil scraping mechanism is installed on the cylinder cover 8. The oil scraping mechanism includes a disc 9, a plurality of telescopic components installed on the outside of the disc 9, a plurality of scraping blocks 36 respectively installed on the plurality of telescopic components, and a driving component for driving the disc 9 to rotate and move at the same time. The driving component includes a motor 19 installed on the top of the cylinder cover 8, a first gear 20 fixedly connected to the output shaft of the motor 19 and extending to one end of the inside of the cylinder cover 8, a first screw rod 21 fixedly connected to the inner wall of the top of the cylinder cover 8 along the height direction of the cylinder cover 8, a second gear 22 sleeved on the outside of the first screw rod 21, and two driving rods 23 fixedly connected to the bottom of the second gear 22. The first gear 20 is meshed with the second gear 22. The two driving rods 23 are symmetrically arranged on both sides of the first screw rod 21 and are arranged parallel to the first screw rod 21. The disc 9 is screwed on the first screw rod 21. On the outside, the disc 9 is also slidably sleeved on the outside of the two driving rods 23, and the second gear 22 is installed on the inner wall of the top of the cylinder cover 8 through the bearing 24. The first gear 20 on the outside of its output shaft is driven to rotate by starting the motor 19, and the second gear 22 is driven to rotate through the meshing of the first gear 20 and the second gear 22, thereby driving the two driving rods 23 to perform orbital motion around the first screw 21. Since the first screw 21 is fixed, the disc 9 is driven to rotate and move downward along the outside of the first screw 21, thereby driving the four scraping blocks 36 to rotate and move downward through the four telescopic components. In this process, the residual oil on the inner wall of the oil guide pipe 2 and the metering tank 3 is quickly scraped downward in turn, saving the time for the staff to wait for the oil inside the calibrator to flow out; There are four telescopic components and four scraper blocks 36, which are all distributed in a circular array with the disc 9 as the center. The telescopic components include a multi-section telescopic rod 14 fixedly connected to the outer wall of the disc 9 and a first spring 15 sleeved on the outside of the multi-section telescopic rod 14. The other end of the multi-section telescopic rod 14 is fixedly connected to the inner wall of the scraper block 36, one end of the first spring 15 is fixedly connected to the disc 9, and the other end of the first spring 15 is fixedly connected to the inner wall of the scraper block 36. Since the diameters of the oil guide pipe 2 and the metering tank 3 are different at many places, the scraper block 36 is driven to always contact the inner wall of the oil guide pipe 2 and the metering tank 3 through the telescopic action of the multi-section telescopic rod 14 and the elastic action of the first spring 15, thereby solving the problem of inconvenient oil cleaning at the corners of the oil guide pipe 2 and the metering tank 3. The scraper block 36 is an arc-shaped structure, and the outer wall of the scraper block 36 is made of rubber material. The setting of the rubber material can scrape the oil on the inner wall of the metering tank 3 and the oil guide pipe 2. The scraper block 36 has a plurality of combined grooves opened in sequence along its arc track. The combined grooves include an oil guide groove 16 opened at the top of the scraper block 36 along the radial direction and a reflux groove 17 opened inside the scraper block 36 along the height direction. The oil guide groove 16 is inclined downward toward the reflux groove 17. The oil guide groove 16 and the reflux groove 17 are arranged so that the oil remaining on the top of the scraper block 36 can flow downward through the oil guide groove 16 and the reflux groove 17. The reflux groove 17 is an inverted Z-shaped structure, and the reflux groove 17 is connected to the oil guide groove 16. The top and bottom of the scraper block 36 are provided with inclined grooves 18 along their arc-shaped trajectory. The arrangement of the inclined grooves 18 enables the scraper block 36 to naturally scale better when it moves up and down and encounters the closing or enlarging opening of the oil guide pipe 2 and the metering tank 3.

[0020] Embodiment 2: See also Figure 1 and Figure 8 This embodiment provides a technical solution based on the first embodiment: a horizontal adjustment mechanism is installed at the bottom of the metering tank 3, and the horizontal adjustment mechanism includes a plurality of column feet 37 fixedly connected to the bottom of the metering tank 3 along the height direction, a plurality of second screws 25 respectively screwed inside the plurality of column feet 37, and a plurality of ground feet 26 respectively fixed to the bottom ends of the plurality of second screws 25. The plurality of column feet 37 are distributed in a circular array with the axis of the metering tank 3 as the center. By rotating the ground feet 26 and the second screws 25, the distance between the ground feet 26 and the column feet 37 can be adjusted, and then the calibration instrument can be kept level as a whole with the help of a level meter, thereby improving the accuracy of the calibration instrument detection.

[0021] Embodiment three: See also Figure 9-11, this embodiment provides a technical solution based on the first and second embodiments: a vibration mechanism is installed inside the barrel cover 8, and the vibration mechanism includes a linkage block 27 installed outside the two driving rods 23, a plurality of vibration plates 28 installed on the outer wall of the linkage block 27, a plurality of second springs 29 installed on the inner wall of the top of the barrel cover 8, and a plurality of knocking balls 30 respectively installed at the bottom of the plurality of second springs 29. The linkage block 27 is a circular ring structure, and the linkage block 27 is sleeved on the outside of the first screw rod 21. The plurality of vibration plates 28 and the plurality of second springs 29 are distributed in a circular array with the first screw rod 21 as the center. The knocking balls 30 cooperate with the vibration plates 28. An oil filling port is opened on the top of the barrel cover 8, and a sealing plug 31 is installed inside the oil filling port. The barrel cover 8 in this embodiment is fixedly arranged on the refueling port 1. Therefore, when refueling the inside of the refueling port 1, the sealing plug 31 is first opened, and the refueling gun is inserted into the main oil port The oil scraper mechanism is directly started to be oiled, and some parts of the oil scraper mechanism are located inside the metering tank 3 and the oil guide pipe 2 during the oil filling process. After the oil is inspected and the oil is unloaded, the oil scraper mechanism can be directly started to run, and the oil remaining on the inner wall of the oil guide pipe 2 and the metering tank 3 can be quickly discharged, thereby omitting the process of installing the oil scraper mechanism inside the oil guide pipe 2 and the metering tank 3. When the oil scraper mechanism is running, the motor 19 drives the linkage block 27 outside the two driving rods 23 to rotate through the first gear 20 and the second gear 22, and the multiple vibration plates 28 outside the linkage block 27 rotate accordingly. In this process, the vibration plate 28 collides with the knocking ball 30. In addition, when the knocking ball 30 is separated from the vibration plate 28, it will shake, thereby increasing the force of knocking the vibration plate 28, so that the linkage block 27, the driving rod 23, the disc 9 and the first screw 21 all continue to vibrate slightly, thereby facilitating the downward discharge of the oil on the driving rod 23, the disc 9 and the first screw 21; A capacity adjustment mechanism is installed on the top of the metering tank 3, and the capacity adjustment mechanism includes a measuring cylinder 32 installed on the top of the metering tank 3 along the height direction, a piston 33 installed inside the measuring cylinder 32, and a third screw 34 screwed inside the measuring cylinder 32 along the height direction. The top of the measuring cylinder 32 is at the same height as the top of the refueling port, the bottom end of the third screw 34 is rotatably connected to the top of the piston 33, and the top of the third screw 34 extends to the outside of the measuring cylinder 32. An exhaust pipe 35 is installed on one side of the measuring cylinder 32. Since the first screw 21 and the driving rod 23 and other structures are fixedly arranged inside the metering tank 3, a part of the volume will be occupied, and the specific volume occupied can be obtained by calculation. By rotating the third screw 34 to drive the piston 33 to move up and down, the oil storage volume inside the measuring cylinder 32 can be adjusted, so that the volume occupied by the first screw 21 and the driving rod 23 and other structures is compensated by the oil storage volume. In addition, when the metering tank 3 is used to calibrate the fuel, the first screw 21 and the drive rod 23 in the capacity adjustment mechanism are not inside the metering tank 3, nor do they occupy the internal volume of the metering tank 3. At this time, by adjusting the oil storage volume inside the measuring cylinder 32, the calibration of different volumes of fuel in the fuel dispenser can be achieved, and there is no need to carry calibrators of various specifications to calibrate the fuel dispenser.

[0022] The oil scraping mechanism in the first embodiment and the third embodiment can be used together with the cleaning liquid to clean the inside of the calibrator, thereby solving the problem that it is difficult to clean the inside of the calibrator and stains are easily left in the corners.

[0023] Working principle: After the oil in the metering tank 3 is discharged, the cylinder cover 8 is covered on the outside of the refueling port 1. In this process, the positioning strip 10 is aligned with the positioning groove 11 and inserted, and the bolt 12 is aligned with the screw hole 13. The bolt 12 is rotated to enter the inside of the screw hole 13, so that the cylinder cover 8 and the refueling port 1 are connected together. The first gear 20 outside its output shaft is driven to rotate by the starting motor 19. The first gear 20 is meshed with the second gear 22, which drives the second gear 22 to rotate, and then drives the two driving rods 23 to perform orbital motion with the first screw rod 21 as the center. Since the first screw rod 21 is fixed The arrangement is fixed, so the disc 9 is driven to rotate and move downward along the outside of the first screw rod 21, thereby driving the four scraper blocks 36 to rotate and move downward through the four telescopic components. In this process, the residual oil on the inner walls of the oil guide pipe 2 and the metering tank 3 are quickly scraped downward in turn. In addition, the telescopic action of the multi-section telescopic rod 14 and the elastic action of the first spring 15 drive the scraper blocks 36 to always contact with the inner walls of the oil guide pipe 2 and the metering tank 3, thereby solving the problem of inconvenient oil cleaning at the corners of the oil guide pipe 2 and the metering tank 3, and saving the time for the staff to wait for the oil inside the calibrator to flow out.

[0024] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A fuel dispenser metering automatic calibrator, comprising a fuel inlet (1), an oil guide pipe (2) connected to the bottom of the fuel inlet (1), a metering tank (3) connected to the bottom of the oil guide pipe (2), a measuring pipe (4) installed on one side of the oil guide pipe (2), a measuring caliper (5) installed on one side of the measuring pipe (4), an oil discharge pipe (6) installed at the bottom of the metering tank (3), and an oil discharge valve (7) installed on the oil discharge pipe (6), wherein the measuring pipe (4) and the oil guide pipe (2) are arranged parallel to each other, and the measuring pipe (4) is respectively connected to the metering tank (3) and the fuel inlet (1), characterized in that: It also includes a cylinder cover (8) which is arranged on the outside of the refueling port (1), and a handle (38) is installed on the top of the cylinder cover (8); A connecting mechanism, used to connect the cylinder cover (8) and the fuel filler port (1); An oil scraping mechanism is mounted on the cylinder cover (8), the oil scraping mechanism comprising a disc (9), a plurality of telescopic components mounted outside the disc (9), a plurality of scraping blocks (36) respectively mounted on the plurality of telescopic components, and a driving component for driving the disc (9) to rotate and move at the same time.

2. The automatic metering calibrator for a fuel dispenser according to claim 1, characterized in that: The connection mechanism comprises a plurality of positioning strips (10) fixedly connected to the outer wall of the fuel filling port (1) along the height direction thereof, a plurality of positioning grooves (11) provided on the inner wall of the cylinder cover (8) along the height direction thereof, a bolt (12) threadedly connected to the inside of the cylinder cover (8) along the radial direction thereof, and a screw hole (13) provided on the outer wall of the fuel filling port (1) along the radial direction thereof. The plurality of positioning strips (10) and the plurality of positioning grooves (11) are distributed in a circular array with the axis of the fuel filling port (1) as the center. The plurality of positioning strips (10) respectively match the plurality of positioning grooves (11). The bolt (12) passes through the cylinder cover (8) and matches the screw hole (13).

3. The automatic metering calibrator for a fuel dispenser according to claim 1, characterized in that: The number of the telescopic components and the scraper blocks (36) is four, and the four telescopic components and the four scraper blocks (36) are distributed in a circular array with the disk (9) as the center. The telescopic components include a multi-section telescopic rod (14) fixedly connected to the outer wall of the disk (9) and a first spring (15) sleeved on the outside of the multi-section telescopic rod (14), the other end of the multi-section telescopic rod (14) is fixedly connected to the inner wall of the scraper block (36), one end of the first spring (15) is fixedly connected to the disk (9), and the other end of the first spring (15) is fixedly connected to the inner wall of the scraper block (36).

4. The automatic metering calibrator for a fuel dispenser according to claim 3, characterized in that: The scraper block (36) is an arc-shaped structure. The outer wall of the scraper block (36) is made of rubber. A plurality of combined grooves are sequentially provided inside the scraper block (36) along its arc-shaped trajectory. The combined grooves include an oil guide groove (16) provided at the top of the scraper block (36) in a radial direction and a return groove (17) provided inside the scraper block (36) in a height direction. The return groove (17) is an inverted Z-shaped structure. The return groove (17) is connected to the oil guide groove (16). Inclined grooves (18) are provided at the top and bottom of the scraper block (36) along its arc-shaped trajectory.

5. The automatic metering calibrator for a fuel dispenser according to claim 1, characterized in that: The driving assembly comprises a motor (19) mounted on the top of the barrel cover (8), a first gear (20) fixedly connected to an end of an output shaft of the motor (19) extending to the inside of the barrel cover (8), a first screw (21) fixedly connected to the inner wall of the top of the barrel cover (8) along the height direction thereof, a second gear (22) sleeved on the outside of the first screw (21), and two driving rods (23) fixedly connected to the bottom of the second gear (22), the first gear (20) meshing with the second gear (22), the two driving rods (23) being symmetrically arranged on both sides of the first screw (21) and being arranged parallel to the first screw (21), the disc (9) being screwed on the outside of the first screw (21), the disc (9) being also slidably sleeved on the outside of the two driving rods (23), and the second gear (22) being mounted on the inner wall of the top of the barrel cover (8) via a bearing (24).

6. The automatic metering calibrator for a fuel dispenser according to claim 1, characterized in that: A horizontal adjustment mechanism is installed at the bottom of the metering tank (3), the horizontal adjustment mechanism comprising a plurality of column feet (37) fixedly connected to the bottom of the metering tank (3) along the height direction thereof, a plurality of second screw rods (25) respectively screwed inside the plurality of column feet (37), and a plurality of ground feet (26) respectively fixed to the bottom ends of the plurality of second screw rods (25), the plurality of column feet (37) being distributed in a circular array with the axis of the metering tank (3) as the center.

7. The automatic metering calibrator for a fuel dispenser according to claim 1, characterized in that: A vibration mechanism is installed inside the cylinder cover (8), and a capacity adjustment mechanism is installed on the top of the metering tank (3). The vibration mechanism comprises a linkage block (27) installed outside the two driving rods (23), a plurality of vibration plates (28) installed on the outer wall of the linkage block (27), a plurality of second springs (29) installed on the inner wall of the top of the cylinder cover (8), and a plurality of knocking balls (30) respectively installed at the bottom of the plurality of second springs (29). The linkage block (27) is a circular ring structure, and the linkage block (27) is sleeved on the outside of the first screw rod (21). The plurality of vibration plates (28) and the plurality of second springs (29) are distributed in a circular array with the first screw rod (21) as the center, and the knocking balls (30) cooperate with the vibration plate (28).

8. The automatic metering calibrator for a fuel dispenser according to claim 7, characterized in that: An oil filling port is provided on the top of the cylinder cover (8), and a sealing plug (31) is installed inside the oil filling port.

9. The automatic metering calibrator for a fuel dispenser according to claim 7, characterized in that: The capacity adjustment mechanism comprises a measuring cylinder (32) mounted on the top of the measuring tank (3) along the height direction thereof, a piston (33) mounted inside the measuring cylinder (32), and a third screw (34) screwed inside the measuring cylinder (32) along the height direction thereof, wherein the bottom end of the third screw (34) is rotatably connected to the top of the piston (33), and the top end of the third screw (34) extends to the outside of the measuring cylinder (32), and an exhaust pipe (35) is mounted on one side of the measuring cylinder (32).

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