Impeller flowmeter
By setting the wheel shaft, impeller and magnetic steel in the impeller flowmeter, and using magnetic field signals and circuit hall to capture the signal, the problem of the gear meshing without rotating and increasing gaps during viscous fluids is solved, and high-precision flow measurement is achieved.
Patent Information
- Application Number
- CN202422007119.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-19
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-08-19
AI Technical Summary
When existing impeller flow meters encounter particularly viscous fluid, the gears are prone to stick and do not rotate. If the gear clearance is increased, the accuracy will be reduced.
An impeller flowmeter is designed. By setting the wheel shaft and impeller inside the housing and installing magnetic steel fixedly on the top of the impeller, the magnetic field signal and circuit Hall capture the signal, and emitting light feedback through the M3 signal, avoiding the problem of gear meshing and not rotating, while maintaining high accuracy.
It effectively avoids the problem of gear meshing and non-rotation caused by fluid viscosity, and at the same time avoids the reduction in accuracy caused by increasing gear clearance, achieving high-precision flow measurement of viscous fluids.
Smart Images
Figure CN222938535U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of flow meters, and specifically relates to an impeller flow meter. Background Technique
[0002] An impeller flow meter is a flow meter that measures the fluid flow rate through the rotational angular velocity of the impeller inside it. Its principle is that when the liquid passes through the flow meter, it drives the gears inside the flow meter to rotate. Two magnetic steels on the gears intermittently give magnetic signals, and the circuit Hall captures the signals and gives light feedback through the M3 signal. When the two gears in the original flow meter cavity rotate and encounter a working condition of a particularly viscous fluid, the two gears are prone to sticking and not rotating when meshing. If the gap between the gears is increased, the accuracy will decrease.
[0003] To solve the above problems, we urgently need an impeller flow meter. Content of the Utility Model
[0004] Aiming at the deficiencies of the prior art, the utility model provides an impeller flow meter to solve the problems mentioned in the above background technique that when the two gears in the original flow meter cavity rotate and encounter a working condition of a particularly viscous fluid, the two gears are prone to sticking and not rotating when meshing, and if the gap between the gears is increased, the accuracy will decrease.
[0005] To achieve the above purpose, the utility model provides the following technical solution: an impeller flow meter, including a housing, a wheel shaft is arranged inside the housing, an impeller is sleeved on the outer surface of the wheel shaft, a magnetic steel is fixedly installed at the top of the impeller, a sealing gasket is movably attached to the outer surface of the magnetic steel, a wheel cap is movably attached to the upper side of the sealing gasket, a sealing ring is arranged on the outer surface of the upper side of the housing, a lid is movably attached to the outer surface of the upper side of the sealing ring, an upper plate is arranged on the outer surface of the upper side of the lid, four first fixing nuts are fixedly threaded inside the upper plate, a circuit cover is arranged on the outer surface of the upper side of the upper plate, a capillary tube is fixedly installed on the outer surface of the lower side of the circuit cover, a circuit Hall is arranged inside the capillary tube, an M3 signal is fixedly installed on the outer surface of the upper side of the circuit cover, and two second fixing nuts are fixedly threaded inside the circuit cover.
[0006] By adopting the above technical solution, by arranging a sealing ring on the outer surface of the upper side of the housing, the sealing performance of the test equipment can be increased.
[0007] Preferably, a circuit hole is opened inside the lid, and the circuit hole and the magnetic steel are located on the same Y axis.
[0008] By adopting the above technical solution, by arranging the circuit hole and the magnetic steel on the same Y axis, subsequent signal transmission is facilitated.
[0009] Preferably, the lower end of the capillary tube is inserted inside the circuit hole.
[0010] Preferably, the circuit Hall and the permanent magnet are located on the same Y-axis.
[0011] By adopting the above technical solution, by arranging the circuit Hall and the permanent magnet on the same Y-axis, the signal can be more accurately sensed during testing.
[0012] Preferably, the wheel cap is threadedly connected to the top end of the impeller.
[0013] Preferably, the first fixing nut passes through the upper plate and the lid, and the first fixing nut is threadedly connected to the inside of the upper plate and the lid respectively.
[0014] Preferably, the second fixing nut passes through the circuit cover and the upper plate, and the second fixing nut is threadedly connected to the inside of the circuit cover and the upper plate respectively.
[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0016] In this impeller flowmeter, a wheel shaft is arranged inside the housing, an impeller is sleeved on the outer surface of the wheel shaft, a permanent magnet is fixedly installed at the top end of the impeller, a sealing gasket is movably attached to the outer surface of the permanent magnet, a wheel cap is movably attached to the upper side of the sealing gasket, a sealing ring is arranged on the outer surface of the upper side of the housing, a lid is movably attached to the outer surface of the upper side of the sealing ring, an upper plate is arranged on the outer surface of the upper side of the lid, four first fixing nuts are fixedly installed by threading inside the upper plate, a circuit cover is arranged on the outer surface of the upper side of the upper plate, a capillary tube is fixedly installed on the outer surface of the lower side of the circuit cover, a circuit Hall is arranged inside the capillary tube, an M3 signal is fixedly installed on the outer surface of the upper side of the circuit cover, and two second fixing nuts are fixedly installed by threading inside the circuit cover. When the liquid enters the inside of the housing, it pushes the impeller inside the housing to rotate. The permanent magnet at the top end of the impeller generates a magnetic field signal, and the circuit Hall below the capillary tube captures the signal and gives a light feedback through the M3 signal, thereby avoiding the problem that the two gears do not rotate due to fluid viscosity and if the gap between the gears is increased, the accuracy will decrease. Description of the Drawings
[0017] Figure 1 It is a schematic exploded view of the structure of the present utility model.
[0018] In the figure: 1. Housing; 2. Wheel shaft; 3. Impeller; 4. Permanent magnet; 5. Sealing gasket; 6. Wheel cap; 7. Sealing ring; 8. Lid; 9. Circuit Hall; 10. Upper plate; 11. First fixing nut; 12. M3 signal; 13. Circuit cover; 14. Capillary tube; 15. Second fixing nut. Detailed Embodiments
[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0020] Please refer to Figure 1 , when using the present utility model, in order to solve the problem that when two gears in the original flowmeter cavity rotate, the two gears are likely to stick and not rotate when encountering a particularly viscous fluid working condition, and if the gap between the gears is increased, the accuracy will decrease. There is a wheel shaft 2 provided inside the housing 1, an impeller 3 is sleeved on the outer surface of the wheel shaft 2, a magnet 4 is fixedly installed at the top of the impeller 3, a sealing gasket 5 is movably attached to the outer surface of the magnet 4, a wheel cap 6 is movably attached to the upper side of the sealing gasket 5, a sealing ring 7 is provided on the outer surface of the upper side of the housing 1, a lid 8 is movably attached to the outer surface of the upper side of the sealing ring 7, an upper plate 10 is provided on the outer surface of the upper side of the lid 8, four first fixing nuts 11 are fixedly screwed inside the upper plate 10, a circuit cover 13 is provided on the outer surface of the upper side of the upper plate 10, a capillary 14 is fixedly installed on the outer surface of the lower side of the circuit cover 13, a circuit Hall 9 is provided inside the capillary 14, an M3 signal 12 is fixedly installed on the outer surface of the upper side of the circuit cover 13, and two second fixing nuts 15 are fixedly screwed inside the circuit cover 13.
[0021] Working principle: When using the impeller 3 flowmeter, the housing 1 of the measuring instrument is fixedly installed on the pipeline to make it communicate with the inside of the pipeline. Then, the liquid in the pipeline flows and enters the inside of the housing 1 to drive the impeller 3 inside the housing 1 to rotate. The magnet 4 at the top of the impeller 3 generates a magnetic field signal, and at the same time, the circuit Hall 9 below the capillary 14 captures the signal and gives a light feedback through the M3 signal 12.
[0022] Compared with the related art, a kind of impeller 3 flowmeter provided by the present utility model has the following beneficial effects: It avoids the problem that the two gears do not rotate due to the viscosity of the fluid, and if the gap between the gears is increased, the accuracy will decrease.
[0023] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. An impeller (3) flow meter, comprising a housing (1), characterized in that: A wheel shaft (2) is arranged inside the housing (1), an impeller (3) is sleeved on the outer surface of the wheel shaft (2), a magnetic steel (4) is fixedly mounted on the top of the impeller (3), a sealing gasket (5) is movably fitted on the outer surface of the magnetic steel (4), a wheel cap (6) is movably fitted on the upper side of the sealing gasket (5), a sealing ring (7) is arranged on the upper outer surface of the housing (1), a cover (8) is movably fitted on the upper outer surface of the sealing ring (7), and an upper cover (8) is arranged on the upper outer surface of the cover (8). The upper plate (10) has four first fixing nuts (11) fixed by internal threads on the upper plate (10), a circuit cover (13) is arranged on the upper outer surface of the upper plate (10), a capillary (14) is fixedly installed on the lower outer surface of the circuit cover (13), a circuit Hall (9) is arranged inside the capillary (14), an M3 signal (12) is fixedly installed on the upper outer surface of the circuit cover (13), and two second fixing nuts (15) are fixedly installed by internal threads on the circuit cover (13).
2. An impeller (3) flowmeter according to claim 1, characterized in that: A circuit hole is provided inside the cover (8), and the circuit hole and the magnetic steel (4) are located on the same Y axis.
3. An impeller (3) flowmeter according to claim 2, characterized in that: The lower end of the capillary tube (14) is inserted into the circuit hole.
4. An impeller (3) flowmeter according to claim 1, characterized in that: The circuit Hall (9) and the magnetic steel (4) are located on the same Y axis.
5. An impeller (3) flowmeter according to claim 1, characterized in that: The wheel cap (6) is threadedly connected to the top end of the impeller (3).
6. An impeller (3) flowmeter according to claim 1, characterized in that: The first fixing nut (11) passes through the upper plate (10) and the cover (8), and the first fixing nut (11) is connected to the internal threads of the upper plate (10) and the cover (8).
7. An impeller (3) flowmeter according to claim 1, characterized in that: The second fixing nut (15) passes through the circuit cover (13) and the upper plate (10), and the second fixing nut (15) is connected to the inner threads of the circuit cover (13) and the upper plate (10).