A fuel main flow test device

Abstract

The present invention relates to the technical field of fuel flow test, and specifically to a fuel main flow test device, including a test machine, a liquid cleaning mechanism, an accelerating circulation mechanism, a residual liquid propulsion mechanism and a rotating mechanism, wherein the top outer wall of the test machine is fixedly connected with a flow meter, the outer wall of the test machine is fixedly connected with an operation panel, and the carrying disc is provided with a transparent measuring cup through a carrying groove. The present invention scrapes the liquid splashed from the outer wall of the circular cover plate through the liquid cleaning mechanism, links the accelerating circulation mechanism, quickly blows off the liquid splashed from the inner wall of the transparent measuring cup, accelerates the collection of the liquid inside the transparent measuring cup, and links the accelerating circulation mechanism with the residual liquid propulsion mechanism through the rotating mechanism so that the push plate guides the liquid through the inner wall of the transparent measuring cup, and at the same time, the first gear drives the second shaft rod and the rack plate to move in the direction close to the linear slide groove, so that the push plate quickly throws off the liquid on its own outer wall and throws it into the transparent measuring cup, greatly reducing liquid loss and reducing errors.

Description

Technical Field

[0001] The invention relates to the technical field of fuel flow test, and in particular to a fuel main pipe flow test device. Background Art

[0002] At present, in the test of the fuel main pipe, the main pipe works under a certain fuel supply pressure, and the amount of fuel sprayed from each fuel nozzle of the main pipe is collected at the same time to analyze the flow characteristics of the fuel main pipe. The quality of the fuel nozzle directly affects the combustion effect of the fuel and the performance of the engine. In order to more accurately detect the atomization effect and flow rate of the nozzle, it is necessary to use a fuel nozzle flow tester. The fuel nozzle flow test usually includes the fuel main pipe flow test, the fuel main pipe flow distribution test, the spray angle test and the sealing test.

[0003] The patent with authorization announcement number CN118392476B discloses a fuel nozzle flow test device, including a test machine and a flow meter, wherein a test slot is provided in the test machine, the flow meter is installed in the test slot, a test nozzle is installed on the flow meter, a rotating hole is provided on the bottom wall of the test slot, a working chamber is provided below the test slot, the working chamber is connected to the rotating hole, a driving mechanism for controlling a turntable is installed in the working chamber, a plurality of transparent measuring cups are installed on the turntable, the positions of the two vertical plates correspond to two semicircular baffles respectively, and an opening and closing mechanism for controlling the semicircular baffles is installed on the side walls of the vertical plates.

[0004] However, the above-mentioned fuel nozzle flow test equipment still has some shortcomings in actual use:

[0005] 1. By closing the originally open semicircular baffle, the two plates squeeze the side wall of the test nozzle, so that the droplets sprayed from the test nozzle will not fall to the outside of the transparent measuring cup. When the test is completed, the semicircular baffle will be reopened. Although it can effectively prevent the liquid from the nozzle from spraying to the outside, the liquid and the inside of the transparent measuring cup will still splash to the bottom wall of the semicircular baffle due to interaction. Since the liquid height inside each measuring cup needs to be compared in the end, the residual liquid on the bottom wall of the semicircular baffle will affect the final judgment result;

[0006] 2. Due to different test simulation states, sometimes the amount of liquid held by the measuring cup is different. However, since part of the liquid will splash onto the inner wall of the transparent measuring cup, when comparing the results, the measuring cup needs to be left still and wait for a certain period of time until the liquid in the transparent measuring cup slowly flows down the inner wall to get the final result, which is very time-consuming. Therefore, a fuel main flow test device is proposed to solve the above problems. Summary of the invention

[0007] The purpose of the present invention is to solve the problems in the background technology and to propose a fuel main pipe flow test device.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A fuel main flow test device comprises a test machine, wherein a flow meter is fixedly connected to the top outer wall of the test machine, an operation panel is fixedly connected to the outer wall of the test machine, an arc-shaped rack is fixedly connected to the inner wall of the test machine, a first telescopic rod is fixedly connected to the top inner wall of the test machine, a test nozzle is fixedly connected to the bottom of the first telescopic rod, a ring seat is rotatably connected to the inner wall of the test machine, a bearing disc is slidably connected to the inner wall of the ring seat, four bearing grooves are opened on the outer wall of the bearing disc, four fixing rods are fixedly connected to the outer wall of the ring seat, a circular cover plate is fixedly connected to the outer wall of each fixing rod, a transparent measuring cup is placed on the bearing disc through the bearing groove, and further comprises:

[0010] A liquid cleaning mechanism, used for scraping off the liquid splashed from the outer wall of the circular cover plate, the liquid cleaning mechanism being mounted on the circular cover plate;

[0011] The accelerating circulation mechanism is used to cooperate with the liquid clearing mechanism to quickly blow off the liquid splashing from the inner wall of the transparent measuring cup, so as to speed up the collection of the liquid inside the transparent measuring cup, and the accelerating circulation mechanism is installed on the circular cover plate;

[0012] The residual liquid pushing mechanism is used to cooperate with the accelerating circulation mechanism to quickly scrape the residual liquid on the outer wall of the clear liquid mechanism and throw it into the transparent measuring cup;

[0013] and a rotating mechanism, which is used to cooperate with the accelerating circulation mechanism to drive the residual liquid propulsion mechanism, and the rotating mechanism is installed in the liquid clearing mechanism.

[0014] Preferably, the bottom outer wall of the supporting disc is fixedly connected with a first gear ring, the bottom of the supporting disc is fixedly connected with a second telescopic rod, the second telescopic rod is fixedly connected to the testing machine, the outer wall of the first gear ring is meshed with a driving gear, the interior of the testing machine is fixedly connected with a motor, and the output shaft of the motor is fixedly connected to the driving gear.

[0015] Preferably, the liquid clearing mechanism includes a rotating gear ring, a rotating ring, two scrapers and two connecting blocks, the rotating ring is rotatably connected to the circular cover plate, the rotating gear ring is fixedly connected to the rotating ring, the rotating gear ring is meshed with an arc-shaped rack frame, the two connecting blocks are symmetrically distributed, the two connecting blocks are both fixedly connected to the rotating ring, and the two scrapers are fixedly connected to the two connecting blocks respectively.

[0016] Preferably, the accelerating circulation mechanism includes a one-way air inlet pipe, an airbag, an inclined push block, a one-way air outlet, a pressure rod and two return springs. The inclined push block is slidably connected to the inner wall of the circular cover plate, the airbag is fixedly connected to the inclined push block, the side of the airbag away from the inclined push block is fixedly connected to the circular cover plate, the one-way air inlet pipe is communicated with the airbag, the one-way air outlet is connected to the airbag, the pressure rod is fixedly connected to the inclined push block, two return springs are fixedly connected in the airbag, the one-way air outlet is arranged above the inner wall of the transparent measuring cup, and a plurality of accelerating circulation mechanisms are provided, and the plurality of accelerating circulation mechanisms are distributed in a circular array.

[0017] Preferably, the rotating mechanism includes a baffle rod, a linear slide, a limiting shaft rod, an annular spring, a short plate, a long plate and a sliding shaft rod, the limiting shaft rod is rotatably connected to the inner wall of the scraper, the short plate is fixedly connected to the limiting shaft rod, the long plate is fixedly connected to the rotating ring, the annular spring is fixedly connected between the long plate and the short plate, the baffle rod is fixedly connected to the limiting shaft rod, the sliding shaft rod is slidably connected to the limiting shaft rod, the linear slide groove is opened at the bottom of the scraper, the sliding shaft rod is slidably connected to the scraper via the linear slide groove, and two rotating mechanisms are provided.

[0018] Preferably, the residual liquid propulsion mechanism includes a tooth block group, a return groove, a first gear, a second shaft rod and a second sliding rod, the return groove is opened at the bottom of the scraper, the return groove is arranged next to the linear groove, the tooth block group is fixedly connected to the scraper, the second sliding rod is slidingly connected to the scraper through the return groove, the top of the first gear is connected to the second sliding rod through a one-way bearing, the first gear is meshed with the outer wall of the tooth block group, and the bottom of the first gear is fixedly connected to the top of the second shaft rod.

[0019] Preferably, the residual liquid propulsion mechanism also includes a push plate, a first slider, a connecting seat 1, a first shaft rod, a rack plate and a second gear, the rack plate is rotatably connected to the second shaft rod, the first slider is slidably connected to the scraper plate, the first slider is fixedly connected to the rack plate, the connecting seat 1 is fixedly connected to the sliding shaft rod, the first shaft rod is rotatably connected to the connecting seat 1, the push plate is fixedly connected to the first shaft rod, the second gear is fixedly connected to the first shaft rod, and the rack plate is meshed with the second gear.

[0020] Preferably, four residual liquid propulsion mechanisms are provided, two residual liquid propulsion mechanisms are respectively provided on the two scrapers, and every two residual liquid propulsion mechanisms are symmetrically distributed.

[0021] Compared with the existing technology, the advantages of this fuel main pipe flow test device are:

[0022] 1. The top outer walls of the two scrapers will scrape off the splashed liquid on the circular cover plate. At the same time, the scrapers will resist the inclined push block, which will cause the inclined push block to move upward and squeeze the airbag. The airbag contracts and sprays the internal gas through the one-way air outlet. The position of the one-way air outlet is set above the inner wall of the transparent measuring cup, so as to promote the splashed liquid on the inner wall of the transparent measuring cup to flow down, saving the static time;

[0023] 2. When the sliding shaft moves, the first gear drives the second sliding rod to slide along the circular sliding groove, so that the two push plates are close to the scraper to scrape the liquid on the outer wall of the scraper;

[0024] 3. The push plate is in close contact with the inner wall of the transparent measuring cup, so that the push plate guides the liquid through the inner wall of the transparent measuring cup. At the same time, the first gear moves the second shaft and the rack plate toward the linear slide, so that the push plate quickly throws the liquid on its outer wall down into the transparent measuring cup.

[0025] To summarize, the present invention provides a liquid cleaning mechanism to scrape off the liquid splashed from the outer wall of the circular cover plate, and links the accelerating circulation mechanism to quickly blow off the liquid splashed from the inner wall of the transparent measuring cup, thereby accelerating the collection of the liquid inside the transparent measuring cup. The accelerating circulation mechanism links the residual liquid propulsion mechanism through the rotating mechanism so that the push plate guides the liquid through the inner wall of the transparent measuring cup. At the same time, the first gear moves the second shaft rod and the rack plate in the direction close to the linear slide groove, so that the push plate quickly throws the liquid on its own outer wall off and into the transparent measuring cup, thereby greatly reducing liquid loss and reducing errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the structure of the present invention after removing part of the testing machine;

[0028] Figure 3 It is a schematic diagram of the structure of the bearing disc of the present invention;

[0029] Figure 4 It is a schematic diagram of the bottom structure of the circular cover plate of the present invention;

[0030] Figure 5 It is a schematic diagram of the structure of the liquid clearing mechanism of the present invention;

[0031] Figure 6 It is a schematic diagram of the structure of the accelerating circulation mechanism of the present invention;

[0032] Figure 7 The present invention Figure 6 A schematic diagram of the partially enlarged structure at center A;

[0033] Figure 8 The present invention Figure 6A schematic diagram of the partially enlarged structure at B in the middle;

[0034] Fig. 9 The present invention Figure 8 A schematic diagram of the partially enlarged structure at C in the middle;

[0035] Fig.10 It is a structural schematic diagram of the rotating mechanism of the present invention.

[0036] In the figure: 1, test machine; 2, flow meter; 3, operation panel; 4, arc rack; 5, test nozzle; 6, transparent measuring cup; 7, bearing disc; 8, ring seat; 9, first telescopic rod; 10, first gear ring; 11, second telescopic rod; 12, motor; 13, driving gear; 14, bearing groove; 15, fixed rod; 16, circular cover; 17, rotating ring; 18, rotating gear ring; 19, one-way air inlet pipe; 20, air bag; 21, inclined push block; 22, one-way air outlet; 23, scraper; 24, push plate; 25, first slide Block; 26, return spring; 27, connecting block; 28, stop rod; 29, pressure rod; 30, linear slide; 31, tooth block group; 32, return slide; 33, limit shaft rod; 34, annular spring; 35, short plate; 36, long plate; 37, sliding shaft rod; 38, connecting seat one; 39, first shaft rod; 40, rack plate; 41, first gear; 42, second gear; 43, second shaft rod; 44, second slide rod; 101, liquid cleaning mechanism; 202, circulation acceleration mechanism; 303, residual liquid propulsion mechanism; 404, rotating mechanism. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0038] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] Reference Figure 1-Figure 10A fuel main flow test device comprises a test machine 1, a flow meter 2 is fixedly connected to the top outer wall of the test machine 1, an operation panel 3 is fixedly connected to the outer wall of the test machine 1, an arc-shaped rack 4 is fixedly connected to the inner wall of the test machine 1, a first telescopic rod 9 is fixedly connected to the top inner wall of the test machine 1, a test nozzle 5 is fixedly connected to the bottom of the first telescopic rod 9, a ring seat 8 is rotatably connected to the inner wall of the test machine 1, a bearing disc 7 is slidably connected to the inner wall of the ring seat 8, four bearing grooves 14 are opened on the outer wall of the bearing disc 7, four fixing rods 15 are fixedly connected to the outer wall of the ring seat 8, a circular cover plate 16 is fixedly connected to the outer wall of each fixing rod 15, and a transparent measuring cup 6 is placed on the bearing disc 7 through the bearing groove 14, and also comprises:

[0040] The liquid cleaning mechanism 101 is used to scrape off the liquid splashed on the outer wall of the circular cover plate 16. The liquid cleaning mechanism 101 is installed on the circular cover plate 16;

[0041] The accelerating circulation mechanism 202 is used to cooperate with the liquid clearing mechanism 101 to quickly blow off the liquid splashing from the inner wall of the transparent measuring cup 6, so as to speed up the collection of the liquid inside the transparent measuring cup 6. The accelerating circulation mechanism 202 is installed on the circular cover plate 16;

[0042] The residual liquid pushing mechanism 303 is used to cooperate with the accelerating circulation mechanism 202 to quickly scrape the residual liquid on the outer wall of the clear liquid mechanism 101 and throw it into the transparent measuring cup 6;

[0043] And the rotating mechanism 404 is used to cooperate with the accelerating circulation mechanism 202 to drive the residual liquid propulsion mechanism 303, and the rotating mechanism 404 is installed in the liquid cleaning mechanism 101.

[0044] Among them, the bottom outer wall of the supporting disc 7 is fixedly connected with the first gear ring 10, the bottom of the supporting disc 7 is fixedly connected with the second telescopic rod 11, the second telescopic rod 11 is fixedly connected to the testing machine 1, the outer wall of the first gear ring 10 is meshed with a driving gear 13, the inside of the testing machine 1 is fixedly connected with a motor 12, and the output shaft of the motor 12 is fixedly connected to the driving gear 13.

[0045] Among them, the liquid cleaning mechanism 101 includes a rotating gear ring 18, a rotating ring 17, two scrapers 23 and two connecting blocks 27. The rotating ring 17 is rotatably connected to the circular cover plate 16, the rotating gear ring 18 is fixedly connected to the rotating ring 17, the rotating gear ring 18 is meshed with the arc-shaped rack frame 4, the two connecting blocks 27 are symmetrically distributed, the two connecting blocks 27 are both fixedly connected to the rotating ring 17, and the two scrapers 23 are fixedly connected to the two connecting blocks 27 respectively.

[0046] In this embodiment, the operation panel 3 is electrically connected to the second telescopic rod 11 , the motor 12 and the first telescopic rod 9 , and the flow meter 2 is used to record the flow rate of the liquid sprayed from the test nozzle 5 .

[0047] When in use, the operator completes the test through the operation panel 3, such as Figure 1-3 As shown, the transparent measuring cup 6 is placed in the bearing groove 14, and then the first telescopic rod 9 and the second telescopic rod 11 are extended, so that the test nozzle 5 is extended into the transparent measuring cup 6, and the second telescopic rod 11 drives the bearing disc 7 and the first gear ring 10 to move upward. The distance that the second telescopic rod 11 drives the bearing disc 7 to move upward is short, so that the bearing disc 7 will not be separated from the ring seat 8, and the bearing disc 7 and the ring seat 8 can be rotated simultaneously. Since the thickness of the first gear ring 10 is greater than the thickness of the driving gear 13, the first gear ring 10 will not be separated from the meshing with the driving gear 13, so that the top outer wall of the transparent measuring cup 6 is in conflict with the circular cover plate 16 to avoid splashing of liquid. When the test is completed, the motor 12 starts to drive the driving gear 13 to rotate, thereby driving the first gear ring 10, the bearing disc 7, the ring seat 8, the transparent measuring cup 6 and the circular cover plate 16 to rotate, so that the rotating gear ring 18 is engaged with the arc-shaped rack frame 4, forcing the rotating ring 17 to start rotating.

[0048] Among them, the accelerating circulation mechanism 202 includes a one-way air inlet pipe 19, an airbag 20, an inclined push block 21, a one-way air outlet 22, a pressure rod 29 and two return springs 26. The inclined push block 21 is slidingly connected to the inner wall of the circular cover plate 16, the airbag 20 is fixedly connected to the inclined push block 21, and the side of the airbag 20 away from the inclined push block 21 is fixedly connected to the circular cover plate 16. The one-way air inlet pipe 19 is connected to the airbag 20, the one-way air outlet 22 is connected to the airbag 20, the pressure rod 29 is fixedly connected to the inclined push block 21, two return springs 26 are fixedly connected in the airbag 20, and the one-way air outlet 22 is arranged above the inner wall of the transparent measuring cup 6. There are a plurality of accelerating circulation mechanisms 202, and the plurality of accelerating circulation mechanisms 202 are distributed in a circular array.

[0049] In this embodiment, if Figure 4-5 As shown, the top outer walls of the two scrapers 23 will scrape off the splashed liquid on the circular cover 16, and at the same time, the scrapers 23 will resist the inclined push block 21, causing the inclined push block 21 to move upward to squeeze the airbag 20. The airbag 20 contracts and sprays the internal gas through the one-way air outlet 22. The position of the one-way air outlet 22 is set above the inner wall of the transparent measuring cup 6, so the splashed liquid on the inner wall of the transparent measuring cup 6 is promoted to flow down, saving the standing time.

[0050] Among them, the rotating mechanism 404 includes a blocking rod 28, a linear slide 30, a limiting shaft rod 33, an annular spring 34, a short plate 35, a long plate 36 and a sliding shaft rod 37. The limiting shaft rod 33 is rotatably connected to the inner wall of the scraper 23, the short plate 35 is fixedly connected to the limiting shaft rod 33, the long plate 36 is fixedly connected to the rotating ring 17, the annular spring 34 is fixedly connected between the long plate 36 and the short plate 35, the blocking rod 28 is fixedly connected to the limiting shaft rod 33, the sliding shaft rod 37 is slidably connected to the limiting shaft rod 33, the linear slide 30 is opened at the bottom of the scraper 23, the sliding shaft rod 37 is slidably connected to the scraper 23 through the linear slide 30, and two rotating mechanisms 404 are provided.

[0051] Among them, the residual liquid propulsion mechanism 303 includes a tooth block group 31, a return groove 32, a first gear 41, a second shaft rod 43 and a second slide rod 44. The return groove 32 is opened at the bottom of the scraper 23, and the return groove 32 is arranged next to the linear groove 30. The tooth block group 31 is fixedly connected to the scraper 23, and the second slide rod 44 is slidingly connected to the scraper 23 through the return groove 32. The top of the first gear 41 is connected to the second slide rod 44 through a one-way bearing, the first gear 41 is meshed with the outer wall of the tooth block group 31, and the bottom of the first gear 41 is fixedly connected to the top of the second shaft rod 43.

[0052] Among them, the residual liquid propulsion mechanism 303 also includes a push plate 24, a first slider 25, a connecting seat 38, a first shaft rod 39, a rack plate 40 and a second gear 42. The rack plate 40 is rotatably connected to the second shaft rod 43, the first slider 25 is slidably connected to the scraper 23, the first slider 25 is fixedly connected to the rack plate 40, the connecting seat 38 is fixedly connected to the sliding shaft rod 37, the first shaft rod 39 is rotatably connected to the connecting seat 38, the push plate 24 is fixedly connected to the first shaft rod 39, the second gear 42 is fixedly connected to the first shaft rod 39, and the rack plate 40 is meshed with the second gear 42.

[0053] There are four residual liquid propulsion mechanisms 303 , two residual liquid propulsion mechanisms 303 are respectively disposed on the two scrapers 23 , and every two residual liquid propulsion mechanisms 303 are symmetrically distributed.

[0054] In this embodiment, if Figure 6 and Fig.10 As shown, when the reset spring 26 brings the inclined push block 21 back to rest, the pressure rod 29 will contact the stop rod 28, thereby driving the stop rod 28 and the limiting shaft rod 33 to rotate, so that the limiting shaft rod 33 drives the sliding shaft rod 37 to move in the linear slide groove 30. A spiral groove is provided on the limiting shaft rod 33, and the length of the spiral groove is the same as that of the limiting shaft rod 33. The spiral angle of the spiral groove is the same as the angle at which the pressure rod 29 drives the stop rod 28 to rotate. Figure 7-9As shown, when the sliding shaft 37 moves, the sliding shaft 37 drives the connecting seat 38 and the rack plate 40 to move, and at the same time, the connecting seat 38 also drives the push plate 24, the second gear 42 and the first shaft 39 to move, and the rack plate 40 drives the second shaft 43, the first gear 41 and the second slide bar 44 to slide, and the first gear 41 is engaged with the tooth block group 31. Since the second slide bar 44 and the first gear 41 are connected by a one-way bearing, the first gear 41 drives the second slide bar 44 to slide along the circular slide groove 32, so that the two push plates 24 are close to the scraper 23 to scrape the liquid on the outer wall of the scraper 23.

[0055] When the second slide bar 44 slides to the end of the circular slide groove 32, the circular slide groove 32 becomes inclined, and the two circular slide grooves 32 are symmetrically arranged on both sides of the linear slide groove 30. At this time, the push plate 24 is in close contact with the inner wall of the transparent measuring cup 6, so that the push plate 24 guides the liquid through the inner wall of the transparent measuring cup 6. At the same time, the first gear 41 moves with the second shaft rod 43 and the rack plate 40 toward the direction close to the linear slide groove 30, so that the push plate 24 quickly throws the liquid on its outer wall off and into the transparent measuring cup 6, reducing the residual waste of the liquid. Then, when the pressure rod 29 does not squeeze the baffle rod 28, the limiting shaft rod 33 is reset by the annular spring 34.

[0056] The specific working principle and method of use of the present invention are explained in detail below: the operation panel 3 is electrically connected to the second telescopic rod 11, the motor 12 and the first telescopic rod 9, and the flow meter 2 is used to record the flow rate of the liquid sprayed through the test nozzle 5.

[0057] When in use, the operator completes the test through the operation panel 3, such as Figure 1-3 As shown, the transparent measuring cup 6 is placed in the bearing groove 14, and then the first telescopic rod 9 and the second telescopic rod 11 are extended, so that the test nozzle 5 is extended into the transparent measuring cup 6, and the second telescopic rod 11 drives the bearing disc 7 and the first gear ring 10 to move upward. The distance that the second telescopic rod 11 drives the bearing disc 7 to move upward is short, so that the bearing disc 7 will not be separated from the ring seat 8, and the bearing disc 7 and the ring seat 8 can be rotated simultaneously. Since the thickness of the first gear ring 10 is greater than the thickness of the driving gear 13, the first gear ring 10 will not be separated from the meshing with the driving gear 13, so that the top outer wall of the transparent measuring cup 6 is in conflict with the circular cover plate 16 to avoid splashing of liquid. When the test is completed, the motor 12 starts to drive the driving gear 13 to rotate, thereby driving the first gear ring 10, the bearing disc 7, the ring seat 8, the transparent measuring cup 6 and the circular cover plate 16 to rotate, so that the rotating gear ring 18 is engaged with the arc-shaped rack frame 4, forcing the rotating ring 17 to start rotating.

[0058] like Figure 4-5As shown, the top outer walls of the two scrapers 23 will scrape off the splashed liquid on the circular cover 16, and at the same time, the scrapers 23 will resist the inclined push block 21, causing the inclined push block 21 to move upward to squeeze the airbag 20. The airbag 20 contracts and sprays the internal gas through the one-way air outlet 22. The position of the one-way air outlet 22 is set above the inner wall of the transparent measuring cup 6, so the splashed liquid on the inner wall of the transparent measuring cup 6 is promoted to flow down, saving the standing time.

[0059] like Figure 6 and Fig.10 As shown, when the reset spring 26 brings the inclined push block 21 back to rest, the pressure rod 29 will contact the stop rod 28, thereby driving the stop rod 28 and the limiting shaft rod 33 to rotate, so that the limiting shaft rod 33 drives the sliding shaft rod 37 to move in the linear slide groove 30. A spiral groove is provided on the limiting shaft rod 33, and the length of the spiral groove is the same as that of the limiting shaft rod 33. The spiral angle of the spiral groove is the same as the angle at which the pressure rod 29 drives the stop rod 28 to rotate. Figure 7-9 As shown, when the sliding shaft 37 moves, the sliding shaft 37 drives the connecting seat 38 and the rack plate 40 to move, and at the same time, the connecting seat 38 also drives the push plate 24, the second gear 42 and the first shaft 39 to move, and the rack plate 40 drives the second shaft 43, the first gear 41 and the second slide bar 44 to slide, and the first gear 41 is engaged with the tooth block group 31. Since the second slide bar 44 and the first gear 41 are connected by a one-way bearing, the first gear 41 drives the second slide bar 44 to slide along the circular slide groove 32, so that the two push plates 24 are close to the scraper 23 to scrape the liquid on the outer wall of the scraper 23.

[0060] When the second slide bar 44 slides to the end of the circular slide groove 32, the circular slide groove 32 becomes inclined, and the two circular slide grooves 32 are symmetrically arranged on both sides of the linear slide groove 30. At this time, the push plate 24 is in close contact with the inner wall of the transparent measuring cup 6, so that the push plate 24 guides the liquid through the inner wall of the transparent measuring cup 6. At the same time, the first gear 41 moves with the second shaft rod 43 and the rack plate 40 toward the direction close to the linear slide groove 30, so that the push plate 24 quickly throws the liquid on its outer wall off and into the transparent measuring cup 6, reducing the residual waste of the liquid. Then, when the pressure rod 29 does not squeeze the baffle rod 28, the limiting shaft rod 33 is reset by the annular spring 34.

[0061] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece forming and other conventional means well known to those skilled in the art.

[0062] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fuel main flow test device, comprising a test machine (1), a flow meter (2) is fixedly connected to the top outer wall of the test machine (1), an operation panel (3) is fixedly connected to the outer wall of the test machine (1), an arc-shaped rack (4) is fixedly connected to the inner wall of the test machine (1), a first telescopic rod (9) is fixedly connected to the top inner wall of the test machine (1), a test nozzle (5) is fixedly connected to the bottom of the first telescopic rod (9), a ring seat (8) is rotatably connected to the inner wall of the test machine (1), a bearing disc (7) is slidably connected to the inner wall of the ring seat (8), the outer wall of the bearing disc (7) is provided with four bearing grooves (14), the outer wall of the ring seat (8) is fixedly connected to four fixing rods (15), the outer wall of each fixing rod (15) is fixedly connected to a circular cover plate (16), and a transparent measuring cup (6) is placed on the bearing disc (7) through the bearing groove (14), characterized in that: Also includes: A liquid cleaning mechanism (101) for scraping off liquid splashed from the outer wall of the circular cover plate (16), the liquid cleaning mechanism (101) being mounted on the circular cover plate (16); an accelerating circulation mechanism (202) for cooperating with the liquid clearing mechanism (101) to quickly blow off the liquid splashing from the inner wall of the transparent measuring cup (6), thereby accelerating the collection of the liquid inside the transparent measuring cup (6); the accelerating circulation mechanism (202) is mounted on the circular cover plate (16); The residual liquid pushing mechanism (303) is used to cooperate with the accelerating circulation mechanism (202) to quickly scrape the residual liquid on the outer wall of the clear liquid mechanism (101) and throw it into the transparent measuring cup (6); and a rotating mechanism (404) for cooperating with the accelerating circulation mechanism (202) to drive the residual liquid propulsion mechanism (303), wherein the rotating mechanism (404) is installed in the liquid clearing mechanism (101); The bottom outer wall of the bearing disc (7) is fixedly connected to a first gear ring (10), the bottom of the bearing disc (7) is fixedly connected to a second telescopic rod (11), the second telescopic rod (11) is fixedly connected to the testing machine (1), the outer wall of the first gear ring (10) is meshed with a driving gear (13), the interior of the testing machine (1) is fixedly connected to a motor (12), and the output shaft of the motor (12) is fixedly connected to the driving gear (13); The liquid clearing mechanism (101) comprises a rotating gear ring (18), a rotating ring (17), two scrapers (23) and two connecting blocks (27); the rotating ring (17) is rotatably connected to the circular cover plate (16); the rotating gear ring (18) is fixedly connected to the rotating ring (17); the rotating gear ring (18) is meshed with an arc-shaped rack frame (4); the two connecting blocks (27) are symmetrically distributed; the two connecting blocks (27) are both fixedly connected to the rotating ring (17); and the two scrapers (23) are respectively fixedly connected to the two connecting blocks (27).

2. A fuel main flow test device according to claim 1, characterized in that: The accelerating circulation mechanism (202) comprises a one-way air inlet pipe (19), an air bag (20), an inclined push block (21), a one-way air outlet (22), a pressure rod (29) and two return springs (26); the inclined push block (21) is slidably connected to the inner wall of the circular cover plate (16); the air bag (20) is fixedly connected to the inclined push block (21); the side of the air bag (20) away from the inclined push block (21) is fixedly connected to the circular cover plate (16); The one-way air inlet pipe (19) is connected to the airbag (20), the one-way air outlet (22) is connected to the airbag (20), the pressure rod (29) is fixedly connected to the inclined push block (21), two return springs (26) are fixedly connected in the airbag (20), the one-way air outlet (22) is arranged above the inner wall of the transparent measuring cup (6), and a plurality of the accelerating circulation mechanisms (202) are arranged, and the plurality of accelerating circulation mechanisms (202) are distributed in a circular array.

3. A fuel main flow test device according to claim 2, characterized in that: The rotating mechanism (404) comprises a stopper rod (28), a linear slide groove (30), a limit shaft rod (33), an annular spring (34), a short plate (35), a long plate (36) and a sliding shaft rod (37); the limit shaft rod (33) is rotatably connected to the inner wall of the scraper (23); the short plate (35) is fixedly connected to the limit shaft rod (33); the long plate (36) is fixedly connected to the rotating ring (17); the annular spring (34) is fixedly connected between the long plate (36) and the short plate (35); the stopper rod (28) is fixedly connected to the limit shaft rod (33); the sliding shaft rod (37) is slidably connected to the limit shaft rod (33); the linear slide groove (30) is provided at the bottom of the scraper (23); the sliding shaft rod (37) is slidably connected to the scraper (23) through the linear slide groove (30); and two of the rotating mechanisms (404) are provided.

4. A fuel main flow test device according to claim 3, characterized in that: The residual liquid propulsion mechanism (303) comprises a tooth block group (31), a return groove (32), a first gear (41), a second shaft (43) and a second slide bar (44); the return groove (32) is opened at the bottom of the scraper (23); the return groove (32) is arranged next to the linear groove (30); the tooth block group (31) is fixedly connected to the scraper (23); the second slide bar (44) is slidably connected to the scraper (23) through the return groove (32); the top end of the first gear (41) is connected to the second slide bar (44) through a one-way bearing; the first gear (41) is meshed with the outer wall of the tooth block group (31); and the bottom of the first gear (41) is fixedly connected to the top of the second shaft (43).

5. A fuel main pipe flow test device according to claim 4, characterized in that: The residual liquid advancing mechanism (303) further comprises a push plate (24), a first slider (25), a connecting seat (38), a first shaft (39), a rack plate (40) and a second gear (42), wherein the rack plate (40) is rotatably connected to the second shaft (43), the first slider (25) is slidably connected to the scraper (23), the first slider (25) is fixedly connected to the rack plate (40), the connecting seat (38) is fixedly connected to the sliding shaft (37), the first shaft (39) is rotatably connected to the connecting seat (38), the push plate (24) is fixedly connected to the first shaft (39), the second gear (42) is fixedly connected to the first shaft (39), and the rack plate (40) is meshed with the second gear (42).

6. A fuel main pipe flow test device according to claim 5, characterized in that: Four residual liquid propulsion mechanisms (303) are provided, and two residual liquid propulsion mechanisms (303) are provided on the two scrapers (23) respectively, and each two residual liquid propulsion mechanisms (303) are symmetrically distributed.

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