Elliptical gear flowmeter

Abstract

The invention provides an elliptical gear flow meter, belongs to the technical field of flow meters, and solves the technical problem that an existing signal receiver cannot bear the temperature of 100 DEG C or above, so that the flow meter cannot be applied to a scene of 100 DEG C or above. An elliptical gear flowmeter comprises a flow base, a shell arranged on the flow base and two communicated gear cavities formed in the shell, a pair of flow channels are formed in the flow base, one ends of the two flow channels are communicated with the corresponding gear cavities, a pair of elliptical gears are rotationally connected to the flow base, and the elliptical gears are arranged in the elliptical gears. The two elliptical gears are located in the corresponding gear cavities and meshed with each other, a pair of first magnets is arranged on the top face of one elliptical gear, an upper end cover is arranged on the shell, and a shifting wheel is rotationally connected to the upper end cover. The flow meter has the advantages that heat cannot be concentrated and accumulated, heat dissipation is fast, the heat-resistant temperature of the flow meter is increased, the service life is prolonged, and the flow meter is suitable for various high-temperature scenes.

Description

Technical Field

[0001] The invention belongs to the technical field of flow meters and relates to an elliptical gear flow meter. Background Art

[0002] The oval gear flowmeter is a volumetric measuring instrument, mainly composed of a metering housing, an oval gear rotor and a transmission component. It is used for continuous or intermittent measurement and control of liquid flow in a pipeline. The flowmeter consists of a metering box and a pair of oval gears installed in the metering box, which together with the upper and lower covers form a sealed crescent-shaped cavity (not absolutely sealed due to the rotation of the gears) as a calculation unit for one displacement. When the measured liquid enters the flowmeter through the pipeline, the pressure difference generated at the inlet and outlet drives the pair of gears to rotate continuously, continuously transporting the liquid measured by the crescent-shaped cavity to the outlet. The product of the number of revolutions of the oval gear and four times the displacement each time is the total amount of the measured liquid flow.

[0003] After searching, it is found that Chinese patent documents disclose an elliptical gear flowmeter [Application number: 202323228417.7; Publication number: CN221173501U]. An elliptical gear flowmeter, relating to the technical field of flowmeters, comprises a housing, wherein a partition is provided in the middle of the housing to divide the housing into a transmission chamber and a medium chamber from top to bottom, wherein the medium chamber is provided with a medium inlet and a medium outlet, wherein a pair of mutually meshing elliptical gears are provided in the medium chamber, wherein the elliptical gears are provided with a plurality of first magnets, wherein a mechanical counter, a linkage sleeve, and a transmission structure are provided in the transmission chamber, wherein a second magnet that forms a magnetic attraction with the first magnet is provided at the lower end of the linkage sleeve, wherein the transmission structure is respectively connected with the mechanical counter and the linkage sleeve, wherein the rotation of the elliptical gear drives the linkage sleeve to rotate, and after being transmitted by the transmission structure, the mechanical counter is driven to count. This utility model adopts mechanical structure transmission and is suitable for harsh environments.

[0004] Although this patent adopts mechanical structure transmission and is suitable for harsh environments, the existing elliptical gear flowmeter embeds two magnets in opposite parts on both sides of the top of the gear on the main body, and places a signal receiver (sensor) corresponding to the magnet on the upper end cover. Since the signal receiver cannot withstand temperatures above 100°C, the flowmeter cannot be used in scenarios above 100°C. Summary of the invention

[0005] The purpose of the present invention is to address the above-mentioned problems in the existing technology and propose an elliptical gear flowmeter. The technical problem to be solved by the invention is: how to ensure that heat will not accumulate in a concentrated manner, dissipate heat quickly, increase the heat resistance temperature of the flowmeter, extend its service life, and be suitable for a variety of high-temperature scenarios.

[0006] The purpose of the present invention can be achieved by the following technical solutions: An elliptical gear flowmeter comprises a flow base, a shell arranged on the flow base, and two communicating gear cavities opened in the shell, wherein a pair of flow channels are opened in the flow base, and one end of the two flow channels are communicated with the corresponding gear cavities, a pair of elliptical gears are rotatably connected to the flow base, the two elliptical gears are located in the corresponding gear cavities and mesh with each other, and a pair of magnets 1 are arranged on the top surface of one of the elliptical gears, and an upper end cover is arranged on the shell, a paddle wheel is rotatably connected to the upper end cover, a plurality of toothed paddles are arranged in an annular manner and fixed on the wheel surface of the paddle wheel, and a movable annular groove is opened on the upper end cover, a pair of magnet sleeves are arranged in the movable annular groove, the top ends of the two magnet sleeves are fixedly connected to the corresponding side of the bottom surface of the paddle wheel, the bottom ends of the two magnet sleeves are fixed with magnets 2, the two magnets 1 are magnetically matched with the two magnets 2, and a safety cover is arranged on the upper end cover, the safety cover is fixedly connected to the upper end cover through a bolt structure, a quick mounting plate is rotatably connected to the safety cover, and a receiving device for sensing the toothed paddles is arranged on the quick mounting plate.

[0007] The working principle of the present invention is: the optical fiber sensor is arranged in the safety cover so that the optical fiber sensor is far away from the liquid flow and does not directly contact the liquid. The magnetic force between the upper and lower magnets 1 and 2 drives the rotation of the toothed pick. The optical fiber sensor can sense and count the toothed pick through the optical fiber probe, thereby calculating the flow rate. The distance between the upper and lower magnets 1 and 2 can ensure that heat will not be concentrated and accumulated, and the heat can be quickly dissipated.

[0008] A buckle frame is fixed on the quick installation plate, and a movable groove is provided on the bottom surface of the buckle frame, and L-shaped plates are rotatably connected on the left and right sides of the movable groove, and anti-slip pads are fixed at one end of the two L-shaped plates, and buckling grooves are provided on the two L-shaped plates, and a pair of guide grooves are provided in the buckle frame, and buckling blocks are slidably connected in the two guide grooves, and reset springs are fixed between one end of the two buckling blocks and the bottom of the corresponding guide grooves, and the other ends of the two buckling blocks are buckled with the corresponding buckling grooves, and pull rings are provided on the outside of the two L-shaped plates, and the two pull rings are connected to the corresponding buckling blocks by pull ropes.

[0009] By adopting the above structure, the receiving assembly can be rotated out of the safety cover to expose it during the disassembly and maintenance of the receiving device through the rotatable quick installation plate, thereby improving the efficiency of disassembly and maintenance. The two L-shaped plates are continuously pressed and rotated during the installation of the digital fiber optic amplifier until one end of the two L-shaped plates fixing the anti-slip pads contacts the surface of the digital fiber optic amplifier and forms a clamping and fixing force on the digital fiber optic amplifier. At this time, the buckle block is pushed into the corresponding buckle groove to fix this clamping and fixing state. When the digital fiber optic amplifier needs to be disassembled, the pull ring can be pulled to drive the two buckle blocks to contract and cancel this clamping and fixing state. At this time, the digital fiber optic amplifier can be directly removed, thereby improving the overall disassembly and assembly efficiency.

[0010] The receiving device includes a digital fiber optic amplifier, a fiber optic cable, and a fiber optic probe. The digital fiber optic amplifier is clamped and fixed with two L-shaped plates, and the fiber optic probe is connected to the height adjustment component. The fiber optic probe is connected to the digital fiber optic amplifier through the fiber optic cable, and the detection end of the fiber optic probe is located directly above the toothed pick.

[0011] With the above structure, the optical fiber probe can detect the toothed picks passing by during the rotation of the dial wheel, and transmit the sensing information to the digital optical fiber amplifier through the optical fiber cable. The digital optical fiber amplifier amplifies and processes the received signal, thereby realizing the detection and measurement of parameters, realizing the sensing and counting of the toothed picks, and calculating the flow rate.

[0012] The height adjustment assembly includes an adjusting nut 1 rotatably connected to the quick mounting plate, a clamping frame arranged in the safety cover, a pair of clamping plates slidably connected to the clamping frame, the two clamping plates are clamped and cooperated with the optical fiber probe, and a bidirectional lead screw is rotatably connected in the clamping frame, the threaded ends on both sides of the bidirectional lead screw are threadedly connected to the corresponding clamping plates, and an adjusting nut 2 is arranged on the clamping frame, the adjusting nut 2 is coaxially fixedly connected to the bidirectional lead screw, and a threaded cylinder is fixed on the clamping frame, a threaded rod is threadedly connected in the threaded cylinder, and the top of the threaded rod is coaxially fixedly connected to the adjusting nut 1, a pair of guide slide rods are fixed on the clamping frame, a pair of guide slide rods are fixed to the bottom surface of the quick mounting plate, and the two guide slide rods are slidably sleeved with the corresponding guide slide rods.

[0013] By adopting the above structure, the bidirectional lead screw can be driven to rotate by rotating the regulating nut 2, so that the bidirectional lead screw rotates and the two clamping plates can move relative to each other, thereby completing the rapid fixation of the optical fiber probe. Before or during the measurement, the regulating nut 1 can be rotated to make the regulating nut 1 drive the threaded rod to rotate. After the threaded rod rotates, it will be connected with the threaded barrel through the thread, so as to realize the change of the height of the clamping frame. Different measuring instruments have different sensitivities to distance. By changing the height of the clamping frame, the measurement distance of the optical fiber probe can be further adjusted.

[0014] A worm wheel is rotatably connected inside the safety cover, and the worm wheel is coaxially fixedly connected to the quick installation plate. A worm is rotatably connected inside the safety cover, and the worm is meshed with the worm wheel. A regulating nut three is provided on the safety cover, and the regulating nut three is coaxially fixedly connected to the top end of the worm.

[0015] With the above structure, the worm can be driven to rotate by adjusting the nut. When the worm rotates, it will drive the worm wheel to rotate. When the worm wheel rotates, it will drive the quick installation plate to flip, thereby realizing the exposure and storage protection of the receiving device.

[0016] The other ends of the two flow channels are sealed and fixed with mounting pipe openings, and the two mounting pipe openings are sealed and provided with connecting pipes, one ends of the two connecting pipes are provided with docking grooves for sleeved corresponding mounting pipe openings, and a docking pipe opening is fixed at the bottom of the docking groove, and the docking pipe opening is threadedly connected to the corresponding mounting pipe opening, and the outer diameter of the docking pipe opening is smaller than the corresponding mounting pipe opening, and the other ends of the two connecting pipes are provided with external pipe openings, which are connected with the corresponding docking pipe openings, and rubber sleeves are fixed in the two docking grooves, and the inner diameters of one ends of the two rubber sleeves are continuously expanded until they are the same as the outer diameters of the mounting pipe openings, and the inner diameters of the other ends of the two rubber sleeves are continuously contracted until they are the same as the outer diameters of the docking pipe openings, and the contraction sections on the two rubber sleeves are provided with enlarged openings, and a stabilizing ring is slidably connected in the connecting pipe, and a pair of racks are slidably connected in the connecting pipe, and the two racks are fixedly connected to the stabilizing ring, and a pair of control arms are rotatably connected in the connecting pipe, one end of the two control arms are gear-shaped and mesh with the corresponding racks, and the other ends of the two control arms are finger-ring-shaped.

[0017] By adopting the above structure, the butt joint pipe port can be threadedly connected with the corresponding installation pipe port to realize the pipeline docking capability, which is convenient for the normal transportation of subsequent flow. Then, through the two rubber sleeves, as the installation pipe port continues to penetrate into the docking groove, the inner wall of the corresponding rubber sleeve will be squeezed and expanded, so that the inner diameter and outer diameter of one end of the two rubber sleeves will be expanded. At this time, the personnel can rotate the two control arms, and one end of the control arm drives the corresponding rack to slide, and the rack further drives the stabilizing ring to move, so that the stabilizing ring and the expanded section of the corresponding rubber sleeve are squeezed and limited, thereby improving the stability of pipeline docking.

[0018] The flow base is provided with a pair of pre-connection holes, and overlapping rods are inserted into the two pre-connection holes. The shell is provided with a pair of stabilizing holes, and the two overlapping rods penetrate the corresponding stabilizing holes. The bottom surface of the upper end cover is provided with a pair of limiting holes, and the two limiting holes are overlapped with the top ends of the corresponding overlapping rods.

[0019] With the above structure, the shell can be inserted into the two lap rods by inserting the lap rod into the pre-connection hole, and then the lap rod is connected to the corresponding stabilizing hole, and then the upper end cover is placed on the lap rod, so that the lap rod is overlapped with the corresponding limit hole, so as to realize the rapid pre-installation of the flow base, the shell and the upper end cover.

[0020] The flow base is provided with a plurality of mounting holes one, the shell is provided with a plurality of mounting holes two, the positions of the plurality of mounting holes two all coincide with the corresponding mounting holes one, and the upper end cover is provided with a plurality of mounting holes three, the positions of the plurality of mounting holes three all coincide with the corresponding mounting holes two, the mounting holes one, the mounting holes two and the mounting holes three form a group through the position coincidence relationship, and each group of the coincident mounting holes one, the mounting holes two and the mounting holes three is threadedly connected with a fixing bolt one.

[0021] By adopting the above structure, the flow base, the shell, and the upper end cover can be quickly fixed and disassembled by overlapping the mounting holes 1, 2, and 3, and cooperating with the threaded connection between the fixing bolt 1 and the three, thereby improving the overall installation efficiency.

[0022] A sealing gasket 1 is arranged between the flow base and the contact surface of the shell, and the sealing gasket 1 is fixedly connected to the top surface of the flow base. A sealing gasket 2 is arranged between the upper end cover and the contact surface of the shell, and the sealing gasket 2 is fixedly connected to the bottom surface of the upper end cover. A sealing gasket 3 is arranged between the upper end cover and the contact surface of the safety cover, and the sealing gasket 3 is fixedly connected to the top surface of the upper end cover.

[0023] By adopting the above structure, a pair of sealing gaskets can be used to seal the flow base and the shell to prevent leakage during flow measurement. A second pair of sealing gaskets can be used to seal the upper end cover and the shell to further prevent leakage during flow measurement. A third pair of sealing gaskets can be used to seal the upper end cover and the safety cover to seal the detection environment, prevent external dust and other debris from interfering with the detection data, and improve the effect of monitoring the flow.

[0024] A pair of flow guide grooves are provided between the two gear chambers, and the bottom ends of the two flow guide grooves are connected to one end of the corresponding flow channel.

[0025] By adopting the above structure, the flow entering the two gear chambers can be guided through the flow guide groove, thereby improving the effect of the flow driving the elliptical gear to operate.

[0026] Compared with the prior art, an oval gear flow meter has the following advantages: 1. The fiber optic sensor is placed in the safety cover to keep it away from the liquid flow and prevent it from directly contacting the liquid, thereby increasing the heat resistance of the flow meter and extending its service life, making it suitable for a variety of high-temperature scenarios.

[0027] 2. The magnetic force between the upper and lower magnets 1 and 2 drives the toothed pick to rotate. The optical fiber sensor can sense and count the toothed pick through the optical fiber probe to calculate the flow rate. The distance between the upper and lower magnets 1 and 2 can ensure that heat will not accumulate and dissipate heat quickly.

[0028] 3. By rotating the two control arms, one end of the control arm drives the corresponding rack to slide, and the rack further drives the stabilizing ring to move, so that the stabilizing ring and the enlarged section of the corresponding rubber sleeve are squeezed and limited, thereby improving the stability of the pipeline docking. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the present invention.

[0030] Figure 2 It is a schematic diagram of the explosion of the structure in the present invention.

[0031] Figure 3 It is a schematic diagram of the overall internal structure of the present invention.

[0032] Figure 4 It is a schematic diagram of the structure inside the buckle frame of the present invention.

[0033] Figure 5 It is a structural schematic diagram of the connection of the connecting pipes in the present invention.

[0034] Figure 6 It is a schematic diagram of the structure inside the connecting pipeline in the present invention.

[0035] Figure 7 It is a structural schematic diagram of the rubber sleeve extrusion limiting state in the present invention.

[0036] Figure 8 It is a structural schematic diagram of the height adjustment component in the present invention.

[0037] Fig. 9 It is a schematic diagram of the structure inside the safety cover of the present invention.

[0038] Fig.10 It is a schematic diagram of the structure inside the upper end cover of the present invention.

[0039] In the figure, 1, flow base; 2, shell; 3, gear chamber; 4, flow channel; 5, elliptical gear; 6, magnet 1; 7, upper end cover; 8, dial wheel; 9, toothed pick; 10, movable annular groove; 11, magnet sleeve; 12, magnet 2; 13, safety cover; 14, digital fiber amplifier; 15, fiber optic cable; 16, fiber optic probe; 17, connecting pipe; 18, pre-connection hole; 19, lap rod; 20, stabilizing hole; 21, limit hole; 22, mounting hole 1; 23, mounting hole 2; 24, mounting hole 3; 25, sealing gasket 1; 26, sealing gasket 2; 27, sealing gasket 3; 28, flow guide groove; 29, fixing bolt 1; 30, quick Mounting plate; 31. Buckle frame; 32. Movable groove; 33. L-shaped plate; 34. Anti-skid pad; 35. Buckle groove; 36. Guide slide groove; 37. Buckle block; 38. Reset spring; 39. Pull ring; 40. Adjustment nut one; 41. Clamping frame; 42. Clamping plate; 43. Bidirectional lead screw; 44. Adjustment nut two; 45. Threaded cylinder; 46. Threaded rod; 47. Guide slide rod; 48. Guide slide cylinder; 49. Worm gear; 50. Worm; 51. Adjustment nut three; 52. Mounting pipe mouth; 53. Docking groove; 54. Docking pipe mouth; 55. External pipe mouth; 56. Rubber sleeve; 57. Enlarged opening; 58. Stabilizing ring; 59. Rack; 60. Control arm. DETAILED DESCRIPTION

[0040] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0041] like Figure 1-Figure 10 As shown, an elliptical gear flowmeter includes a flow base 1, a shell 2 arranged on the flow base 1, and two communicating gear chambers 3 opened in the shell 2. A pair of flow channels 4 are opened in the flow base 1, and one end of the two flow channels 4 is connected to the corresponding gear chamber 3. A pair of elliptical gears 5 are rotatably connected to the flow base 1. The two elliptical gears 5 are located in the corresponding gear chambers 3 and mesh with each other, and a pair of magnets 6 are arranged on the top surface of one of the elliptical gears 5. An upper end cover 7 is arranged on the shell 2, and a thumb wheel 8 is rotatably connected to the upper end cover 7. The thumb wheel 8 has a ring-shaped fixed arrangement on its wheel surface. There are multiple toothed picks 9, and a movable annular groove 10 is opened on the upper end cover 7, a pair of magnet sleeves 11 are arranged in the movable annular groove 10, the top ends of the two magnet sleeves 11 are fixedly connected to the corresponding side of the bottom surface of the dial wheel 8, the bottom ends of the two magnet sleeves 11 are fixed with magnets 12, the two magnets 16 are magnetically matched with the two magnets 2 12, and a safety cover 13 is arranged on the upper end cover 7, the safety cover 13 is fixedly connected to the upper end cover 7 through a bolt structure, and a quick installation plate 30 is rotatably connected to the safety cover 13, and a receiving device for sensing the toothed pick 9 is arranged on the quick installation plate 30.

[0042] The optical fiber sensor is arranged in the safety cover 13, so that the optical fiber sensor is far away from the liquid flow and does not come into direct contact with the liquid. The magnetic force between the upper and lower magnets 6 and 12 drives the toothed pick 9 to rotate. The optical fiber sensor can sense and count the toothed pick 9 through the optical fiber probe 16, so as to calculate the flow rate. The distance between the upper and lower magnets 6 and 12 can ensure that heat will not be concentrated and accumulated, and the heat can be dissipated quickly.

[0043] A buckle frame 31 is fixed on the quick installation plate 30, and a movable groove 32 is provided on the bottom surface of the buckle frame 31, and L-shaped plates 33 are rotatably connected on the left and right sides of the movable groove 32, and anti-slip pads 34 are fixed at one end of the two L-shaped plates 33, and buckling grooves 35 are provided on the two L-shaped plates 33, and a pair of guide grooves 36 are provided in the buckle frame 31, and buckling blocks 37 are slidably connected in the two guide grooves 36, and reset springs 38 are fixed between one end of the two buckling blocks 37 and the bottom of the corresponding guide grooves 36, and the other ends of the two buckling blocks 37 are buckled with the corresponding buckling grooves 35, and pull rings 39 are provided on the outside of the two L-shaped plates 33, and the two pull rings 39 are connected to the corresponding buckling blocks 37 by pull ropes.

[0044] By adopting the above structure, the receiving assembly can be rotated and exposed from the safety cover 13 during the disassembly and maintenance of the receiving device through the rotatable quick installation plate 30, thereby improving the efficiency of disassembly and maintenance. The two L-shaped plates 33 are continuously pressed and rotated during the installation of the digital fiber optic amplifier 14 until one end of the two L-shaped plates 33 fixing the anti-slip pad layer 34 contacts the surface of the digital fiber optic amplifier 14 and forms a clamping and fixing force on the digital fiber optic amplifier 14. At this time, the buckle block 37 is pushed into the corresponding buckle groove 35 to fix this clamping and fixing state. When the digital fiber optic amplifier 14 needs to be disassembled, the pull ring 39 can be pulled to drive the two buckle blocks 37 to contract and cancel this clamping and fixing state. At this time, the digital fiber optic amplifier 14 can be directly removed, thereby improving the overall disassembly and assembly efficiency.

[0045] The receiving device includes a digital fiber optic amplifier 14, a fiber optic cable 15, and a fiber optic probe 16. The digital fiber optic amplifier 14 is clamped and fixed with two L-shaped plates 33, and the fiber optic probe 16 is connected to the height adjustment component. The fiber optic probe 16 is connected to the digital fiber optic amplifier 14 through the fiber optic cable 15, and the detection end of the fiber optic probe 16 is located directly above the toothed pick 9.

[0046] With the above structure, the optical fiber probe 16 can sense the toothed pick 9 passing by during the rotation of the dial wheel 8, and transmit the sensing information to the digital optical fiber amplifier 14 through the optical fiber cable 15. The received signal is amplified and processed by the digital optical fiber amplifier 14, thereby realizing the detection and measurement of parameters, realizing the sensing and counting of the toothed pick 9, and calculating the flow rate.

[0047] The height adjustment assembly includes an adjusting nut 1 40 rotatably connected to the quick mounting plate 30, a clamping frame 41 arranged in the safety cover 13, a pair of clamping plates 42 being slidably connected to the clamping frame 41, the two clamping plates 42 are clamped and cooperated with the optical fiber probe 16, and a bidirectional lead screw 43 is rotatably connected in the clamping frame 41, the threaded ends on both sides of the bidirectional lead screw 43 are threadedly connected to the corresponding clamping plates 42, and an adjusting nut 2 44 is arranged on the clamping frame 41, the adjusting nut 2 44 is coaxially fixedly connected to the bidirectional lead screw 43, and a threaded cylinder 45 is fixed on the clamping frame 41, a threaded rod 46 is threadedly connected to the threaded cylinder 45, and the top of the threaded rod 46 is coaxially fixedly connected to the adjusting nut 1 40, a pair of guide slide rods 47 are fixed on the clamping frame 41, and a pair of guide slide rods 48 are fixed to the bottom surface of the quick mounting plate 30, and the two guide slide rods 48 are slidably sleeved with the corresponding guide slide rods 47.

[0048] By adopting the above structure, the bidirectional lead screw 43 can be driven to rotate by rotating the regulating nut 2 44, so that the bidirectional lead screw 43 rotates and the two clamping plates 42 can move relative to each other, thereby completing the rapid fixation with the optical fiber probe 16, and before or during the measurement, the regulating nut 1 40 can be rotated so that the regulating nut 1 40 drives the threaded rod 46 to rotate. After the threaded rod 46 rotates, it will be connected with the threaded tube 45 through the thread, so as to realize the change of the height of the clamping frame 41. Different measuring instruments have different sensitivities to distance, and the measurement distance of the optical fiber probe 16 can be further adjusted by changing the height of the clamping frame 41.

[0049] A worm wheel 49 is rotatably connected inside the safety cover 13, and the worm wheel 49 is coaxially fixedly connected to the quick installation plate 30. A worm 50 is rotatably connected inside the safety cover 13, and the worm 50 is meshed with the worm wheel 49. An adjusting nut three 51 is provided on the safety cover 13, and the adjusting nut three 51 is coaxially fixedly connected to the top end of the worm 50.

[0050] With the above structure, the worm 50 can be driven to rotate by adjusting the nut 3 51. When the worm 50 rotates, it will drive the worm wheel 49 to rotate. When the worm wheel 49 rotates, it will drive the quick installation plate 30 to flip over, thereby realizing the exposure and storage protection of the receiving device.

[0051] The other ends of the two flow channels 4 are sealed and fixed with mounting nozzles 52, and the two mounting nozzles 52 are sealed and provided with connecting pipes 17, and one end of the two connecting pipes 17 is provided with a docking groove 53 for sleeve-connecting the corresponding mounting nozzles 52, and a docking nozzle 54 is fixed at the bottom of the docking groove 53, and the docking nozzle 54 is threadedly connected to the corresponding mounting nozzle 52, and the outer diameter of the docking nozzle 54 is smaller than that of the corresponding mounting nozzle 52, and the other ends of the two connecting pipes 17 are provided with an external nozzle 55, and the external nozzle 55 is connected to the corresponding docking nozzle 54, and a rubber sleeve 56 is fixed in the two docking grooves 53, and the two rubber sleeves 56 are fixed in the two docking grooves 53. The inner diameter of one end of the sleeve 56 is continuously expanded until it is the same as the outer diameter of the installation pipe mouth 52, and the inner diameter of the other end of the two rubber sleeves 56 is continuously contracted until it is the same as the outer diameter of the docking pipe mouth 54, and the contraction sections on the two rubber sleeves 56 are provided with enlarged openings 57, and a stabilizing ring 58 is slidably connected in the connecting pipe 17, and a pair of racks 59 are slidably connected in the connecting pipe 17, and the two racks 59 are fixedly connected to the stabilizing ring 58, and a pair of control arms 60 are rotatably connected in the connecting pipe 17, one end of the two control arms 60 are gear-shaped and mesh with the corresponding racks 59, and the other ends of the two control arms 60 are finger ring-shaped.

[0052] By adopting the above structure, the butt joint pipe port 54 can be threadedly connected with the corresponding installation pipe port 52 to realize the pipeline docking capability, which is convenient for the normal transportation of subsequent flow. Then, through the two rubber sleeves 56, when the installation pipe port 52 continues to penetrate into the docking groove 53, the inner wall of the corresponding rubber sleeve 56 will be squeezed and expanded, so that the inner diameter and outer diameter of one end of the two rubber sleeves 56 are expanded. At this time, the personnel can rotate the two control arms 60, and one end of the control arm 60 drives the corresponding rack 59 to slide, and the rack 59 further drives the stabilizing ring 58 to move, so that the stabilizing ring 58 and the enlarged section of the corresponding rubber sleeve 56 are squeezed and limited, thereby improving the stability of the pipeline docking.

[0053] A pair of pre-connection holes 18 are provided on the flow base 1, and overlapping rods 19 are inserted into the two pre-connection holes 18. A pair of stabilizing holes 20 are provided on the shell 2, and the two overlapping rods 19 pass through the corresponding stabilizing holes 20. A pair of limiting holes 21 are provided on the bottom surface of the upper end cover 7, and the two limiting holes 21 are overlapped with the top ends of the corresponding overlapping rods 19.

[0054] By adopting the above structure, the shell 2 can be inserted into the two overlapping rods 19 by inserting the overlapping rod 19 into the pre-connection hole 18, and then the overlapping rod 19 is connected with the corresponding stabilizing hole 20, and then the upper end cover 7 is placed on the overlapping rod 19, so that the overlapping rod 19 and the corresponding limiting hole 21 are overlapped and matched, thereby realizing the rapid pre-installation of the flow base 1, the shell 2, and the upper end cover 7.

[0055] A plurality of mounting holes 22 are provided on the flow base 1, a plurality of mounting holes 23 are provided on the shell 2, and the positions of the plurality of mounting holes 23 coincide with the corresponding mounting holes 1 22, and a plurality of mounting holes 3 24 are provided on the upper end cover 7, and the positions of the plurality of mounting holes 3 24 coincide with the corresponding mounting holes 23. The mounting holes 1 22, the mounting holes 23, and the mounting holes 3 24 form a group through the positional coincidence relationship, and each group of the coincident mounting holes 1 22, the mounting holes 23, and the mounting holes 3 24 are threadedly connected with fixing bolts 1 29.

[0056] By adopting the above structure, the flow base 1, the shell 2, and the upper end cover 7 can be quickly fixedly connected and disassembled by overlapping the mounting hole 1 22, the mounting hole 23, and the mounting hole 3 24, and cooperating with the fixing bolt 1 29 and the threaded connection between the three, thereby improving the overall installation efficiency.

[0057] A sealing gasket 25 is provided between the contact surface of the flow base 1 and the shell 2, and the sealing gasket 25 is fixedly connected to the top surface of the flow base 1. A sealing gasket 26 is provided between the contact surface of the upper end cover 7 and the shell 2, and the sealing gasket 26 is fixedly connected to the bottom surface of the upper end cover 7. A sealing gasket 3 27 is provided between the contact surface of the upper end cover 7 and the safety cover 13, and the sealing gasket 3 27 is fixedly connected to the top surface of the upper end cover 7.

[0058] By adopting the above structure, the flow base 1 and the shell 2 can be sealed by the sealing gasket 1 25 to prevent leakage during flow measurement. The upper end cover 7 and the shell 2 can be sealed by the sealing gasket 26 to further prevent leakage during flow measurement. The upper end cover 7 and the safety cover 13 can be sealed by the sealing gasket 3 27 to seal the detection environment, prevent external dust and other debris from interfering with the detection data, and improve the effect of monitoring the flow.

[0059] A pair of flow guide grooves 28 are provided between the two gear chambers 3 , and the bottom ends of the two flow guide grooves 28 are connected to one end of the corresponding flow channel 4 .

[0060] By adopting the above structure, the flow entering the two gear chambers 3 can be guided through the flow guide groove 28, thereby improving the effect of the flow driving the elliptical gear 5 to operate.

[0061] The working principle of the present invention is as follows: by inserting the lap rod 19 into the pre-connection hole 18, and then docking the lap rod 19 with the corresponding stabilizing hole 20, the shell 22 is inserted into the two lap rods 19, and then the upper end cover 7 is placed on the lap rod 19, so that the lap rod 19 and the corresponding limiting hole 21 are overlapped and matched, so as to realize the rapid pre-installation of the flow base 1, the shell 2, and the upper end cover 7, and a plurality of fixing bolts 29 are threadedly connected with the corresponding mounting hole 1 22, mounting hole 23, and mounting hole 3 24 to realize the rapid fixed connection between the flow base 11, the shell 22, and the upper end cover 77, and then the two connecting pipes 17 are connected to the corresponding flow delivery pipes, so that the flow liquid enters the two flow channels from the flow channel 4 on one side. The gear cavity 3 is inserted into the gear cavity 3, and pushes the two elliptical gears 5 to operate, and then discharged from the flow channel 4 on the other side. A pair of magnets 1 6 on one of the elliptical gears 5 drives the rotation of the toothed pick 9 through the magnetic force between the magnet 2 12. The toothed pick 9 passing by is sensed by the optical fiber probe 16 during the rotation of the dial wheel 8, and the sensing information is transmitted to the digital optical fiber amplifier 14 through the optical fiber cable 15. The received signal is amplified and processed by the digital optical fiber amplifier 14, so as to realize the detection and measurement of parameters, realize the sensing counting of the toothed pick 9, and thus calculate the size of the flow. The worm 50 is driven to rotate by the regulating nut 3 51. After the worm 50 rotates, it will drive the worm wheel 49 to rotate, and the worm wheel 49 rotates. After the rotation, the quick installation plate 30 will be driven to flip over, so as to expose and store the receiving device for protection. Through the rotatable quick installation plate 30, the receiving assembly can be rotated out of the safety cover 13 to expose it during the disassembly and maintenance of the receiving device, so as to improve the efficiency of disassembly and maintenance. The two L-shaped plates 33 are constantly pressed and rotated during the installation of the digital fiber optic amplifier 14 until one end of the two L-shaped plates 33 fixing the anti-skid pads 34 contacts the surface of the digital fiber optic amplifier 14 and forms a clamping and fixing force on the digital fiber optic amplifier 14. At this time, the buckle block 37 is pushed into the corresponding buckle groove 35 to fix this clamping and fixing state. When the digital fiber optic amplifier 14 needs to be disassembled, the pull ring 39 can be pulled to drive the two buckles to rotate. The connecting block 37 contracts to cancel the clamping and fixing state, and the digital fiber amplifier 14 can be directly removed to improve the overall disassembly and assembly efficiency. The bidirectional lead screw 43 is driven to rotate by rotating the regulating nut 2 44, so that the bidirectional lead screw 43 rotates to achieve the relative movement of the two clamping plates 42, thereby completing the rapid fixation with the fiber optic probe 16, and before or during the measurement, the regulating nut 1 40 is rotated to make the regulating nut 1 40 drive the threaded rod 46 to rotate. After the threaded rod 46 rotates, it will be connected with the threaded barrel 45 through the thread, so as to achieve the change of the height of the clamping frame 41. Different measuring instruments have different sensitivities to distance. By changing the height of the clamping frame 41, the measurement distance of the fiber optic probe 16 can be further adjusted.The butt joint 54 is threadedly connected with the corresponding installation pipe mouth 52 to realize the pipe butt joint capability, which is convenient for the normal delivery of the subsequent flow. Then, through the two rubber sleeves 56, when the installation pipe mouth 52 continues to penetrate into the butt joint groove 53, the inner wall of the corresponding rubber sleeve 56 will be squeezed and expanded, so that the inner diameter and outer diameter of one end of the two rubber sleeves 56 will be expanded. At this time, the personnel can rotate the two control arms 60, and one end of the control arm 60 drives the corresponding rack 59 to slide, and the rack 59 further drives the stabilizing ring 58 to move, so that the stabilizing ring 58 and the enlarged section of the corresponding rubber sleeve 56 are squeezed and limited, thereby improving the stability of the pipe butt joint.

[0062] In summary, by setting the optical fiber sensor in the safety cover 13, the optical fiber sensor is kept away from the liquid flow and does not come into direct contact with the liquid. The magnetic force between the upper and lower magnets 6 and 12 drives the toothed pick 9 to rotate. The optical fiber sensor can sense and count the toothed pick 9 through the optical fiber probe 16, thereby calculating the flow rate. The distance between the upper and lower magnets can ensure that heat will not accumulate and dissipate heat quickly.

[0063] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An elliptical gear flowmeter, comprising a flow base (1), a housing (2) arranged on the flow base (1), and two communicating gear chambers (3) opened in the housing (2), characterized in that: A pair of flow channels (4) are provided in the flow base (1), one end of each of the two flow channels (4) is connected to the corresponding gear chamber (3), a pair of elliptical gears (5) are rotatably connected to the flow base (1), the two elliptical gears (5) are located in the corresponding gear chamber (3) and mesh with each other, and a pair of magnets (6) are provided on the top surface of one of the elliptical gears (5), and an upper end cover (7) is provided on the housing (2), a thumbwheel (8) is rotatably connected to the upper end cover (7), a plurality of tooth-shaped thumbwheels (9) are fixedly arranged in an annular manner on the wheel surface of the thumbwheel (8), and a movable ring is provided on the upper end cover (7). A pair of magnet sleeves (11) are arranged in the movable annular groove (10), the top ends of the two magnet sleeves (11) are fixedly connected to the corresponding side of the bottom surface of the dial wheel (8), the bottom ends of the two magnet sleeves (11) are fixed with magnet two (12), the two magnets one (6) and the two magnets two (12) are magnetically matched, and a safety cover (13) is arranged on the upper end cover (7), the safety cover (13) is fixedly connected to the upper end cover (7) through a bolt structure, and a quick installation plate is rotatably connected to the safety cover (13), and a receiving device for sensing the toothed dial (9) is arranged on the quick installation plate.

2. An oval gear flowmeter according to claim 1, characterized in that: The quick installation plate (30) is fixed with a buckle frame (31), and a movable groove (32) is provided on the bottom surface of the buckle frame (31), and L-shaped plates (33) are rotatably connected to the left and right sides of the movable groove (32), and an anti-skid pad layer (34) is fixed to one end of the two L-shaped plates (33), and buckle grooves (35) are provided on the two L-shaped plates (33), and a pair of guide grooves (36) are provided in the buckle frame (31), and the two guide grooves (36) are provided in the two guide grooves (36). A buckle block (37) is slidably connected in the slide groove (36), a return spring (38) is fixed between one end of the two buckle blocks (37) and the bottom of the corresponding guide slide groove (36), and the other end of the two buckle blocks (37) is plugged into the corresponding buckle groove (35), and a pull ring (39) is arranged outside the two L-shaped plates (33), and the two pull rings (39) are connected to the corresponding buckle blocks (37) by a pull rope.

3. An oval gear flowmeter according to claim 2, characterized in that: The receiving device comprises a digital optical fiber amplifier (14), an optical fiber cable (15), and an optical fiber probe (16); the digital optical fiber amplifier is clamped and fixedly matched with two L-shaped plates (33); the optical fiber probe (16) is connected to a height adjustment component; the optical fiber probe (16) is connected to the digital optical fiber amplifier via the optical fiber cable (15); and the detection end of the optical fiber probe (16) is located directly above the toothed pick (9).

4. An oval gear flowmeter according to claim 3, characterized in that: The height adjustment assembly comprises an adjusting nut (40) rotatably connected to the quick mounting plate (30), a clamping frame (41) arranged in the safety cover (13), a pair of clamping plates (42) slidably connected to the clamping frame (41), the two clamping plates (42) are clamped and matched with the optical fiber probe (16), and a bidirectional lead screw (43) is rotatably connected in the clamping frame (41), the threaded ends on both sides of the bidirectional lead screw (43) are threadedly connected to the corresponding clamping plates (42), and the clamping frame (41) is provided with an adjusting nut. The second female (44), the second regulating nut (44) and the bidirectional lead screw (43) are coaxially fixedly connected, and a threaded cylinder (45) is fixed on the clamping frame (41), and a threaded rod (46) is internally threadedly connected to the threaded cylinder (45), and the top of the threaded rod (46) is coaxially fixedly connected to the first regulating nut (40), and a pair of guide slide bars (47) are fixed on the clamping frame (41), and a pair of guide slide bars (48) are fixed on the bottom surface of the quick installation plate (30), and the two guide slide bars (48) are slidably sleeved with the corresponding guide slide bars (47).

5. An oval gear flowmeter according to claim 1, characterized in that: A worm wheel (49) is rotatably connected inside the safety cover (13), and the worm wheel (49) is coaxially fixedly connected to the quick installation plate (30). A worm (50) is rotatably connected inside the safety cover (13), and the worm (50) is meshed with the worm wheel (49). A regulating nut three (51) is provided on the safety cover (13), and the regulating nut three (51) is coaxially fixedly connected to the top end of the worm (50).

6. An oval gear flowmeter according to claim 1, characterized in that: The other ends of the two flow channels (4) are both sealed and fixed with mounting pipe openings (52), and the two mounting pipe openings (52) are both sealed and provided with connecting pipes (17). One end of the two connecting pipes (17) is provided with a docking groove (53) sleeved with the corresponding mounting pipe opening (52), and a docking pipe opening (54) is fixed at the bottom of the docking groove (53). The docking pipe opening (54) is threadedly connected to the corresponding mounting pipe opening (52), and the outer diameter of the docking pipe opening (54) is smaller than that of the corresponding mounting pipe opening (52). The other ends of the two connecting pipes (17) are provided with an external pipe opening (55), and the external pipe opening (55) is communicated with the corresponding docking pipe opening (54), and a rubber sleeve (56) is fixed in the two docking grooves (53). The inner diameter of one end of the rubber sleeve (56) is continuously expanded until it is the same as the outer diameter of the installation pipe opening (52), and the inner diameter of the other end of the two rubber sleeves (56) is continuously contracted until it is the same as the outer diameter of the docking pipe opening (54), and the contraction sections on the two rubber sleeves (56) are provided with an enlarged opening (57), and a stabilizing ring (58) is slidably connected in the connecting pipe (17), and a pair of racks (59) are slidably connected in the connecting pipe (17), and the two racks (59) are fixedly connected to the stabilizing ring (58), and a pair of control arms (60) are rotatably connected in the connecting pipe (17), one end of the two control arms (60) is gear-shaped and meshes with the corresponding racks (59), and the other ends of the two control arms (60) are finger-ring-shaped.

7. An oval gear flowmeter according to claim 1, characterized in that: The flow base (1) is provided with a pair of pre-connection holes (18), and a lap rod (19) is inserted into each of the two pre-connection holes (18). The shell (2) is provided with a pair of stabilizing holes (20), and the two lap rods (19) penetrate the corresponding stabilizing holes (20). The bottom surface of the upper end cover (7) is provided with a pair of limiting holes (21), and the two limiting holes (21) are overlapped with the top ends of the corresponding lap rods (19).

8. An oval gear flowmeter according to claim 1, characterized in that: The flow base (1) is provided with a plurality of mounting holes (22), the shell (2) is provided with a plurality of mounting holes (23), the positions of the plurality of mounting holes (23) all coincide with the corresponding mounting holes (22), and the upper end cover (7) is provided with a plurality of mounting holes (24), the positions of the plurality of mounting holes (24) all coincide with the corresponding mounting holes (23), the mounting holes (22), the mounting holes (23) and the mounting holes (24) form a group by overlapping positions, and each group of overlapping mounting holes (22), mounting holes (23) and mounting holes (24) is threadedly connected with a fixing bolt (29).

9. An oval gear flowmeter according to claim 1, characterized in that: A sealing gasket 1 (25) is provided between the contact surface between the flow base (1) and the shell (2), and the sealing gasket 1 (25) is fixedly connected to the top surface of the flow base (1). A sealing gasket 2 (26) is provided between the contact surface between the upper end cover (7) and the shell (2), and the sealing gasket 2 (26) is fixedly connected to the bottom surface of the upper end cover (7). A sealing gasket 3 (27) is provided between the contact surface between the upper end cover (7) and the safety cover (13), and the sealing gasket 3 (27) is fixedly connected to the top surface of the upper end cover (7).

10. An oval gear flow meter according to claim 1, characterized in that: A pair of flow guide grooves (28) are provided between the two gear chambers (3), and the bottom ends of the two flow guide grooves (28) are connected to one end of the corresponding flow channel (4).

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