CN-224231034-U - High-precision rotary wing type water meter

Abstract

The application relates to a high-precision rotary-wing water meter, which relates to the technical field of measuring instruments, and comprises a shell and impellers rotatably arranged in the shell, wherein the shell comprises a hollow installation cavity, a water inlet pipe and a water outlet pipe which are respectively positioned at two ends of the installation cavity, an impeller box with a plurality of through holes along the circumferential direction is arranged in the installation cavity, the impellers are arranged in the impeller box, a gear set is connected to the installation cavity, the gear set is in transmission connection with a counter used for counting, a stop block capable of sealing the water inlet pipe is slidably arranged in the installation cavity at a position close to the water inlet pipe, the stop block is connected with a pressure spring, the impellers comprise a central shaft and a plurality of rotating blades which are circumferentially arranged on the side wall of the central shaft at intervals, the central shaft is slidably sleeved with a locking assembly capable of locking the impellers to rotate, the locking assembly is in transmission connection with the stop block, when no water flows in the water inlet pipe, the stop block seals the water inlet pipe, and the locking assembly limits the rotation of the impellers. The application can lock the impeller of the water meter when no water flow exists, and avoid the rotation of the impeller under the inertia effect to generate counting errors.

Inventors

• Cen Yuhang

Assignees

• 浙江良禾仪表有限公司

Dates

Publication Date

20260512

Application Date

20250721

Claims (6)

1. 1. The utility model provides a high accuracy rotor formula water gauge, includes shell (1) and rotate set up in impeller (2) inside shell (1), shell (1) include hollow installation cavity (11) and be located respectively inlet tube (12) and outlet pipe (13) at installation cavity (11) both ends, be provided with in installation cavity (11) along circumference set up impeller box (3) of a plurality of through-holes, impeller (2) install in impeller box (3), be connected with gear train (4) on installation cavity (11), gear train (4) transmission is connected with counter (5) that are used for the count, wherein in installation cavity (11) be close to inlet tube (12) position slip is provided with can seal dog (6) of inlet tube (12), dog (6) are connected with pressure spring (61), impeller (2) including axis (21) and a plurality of along circumference interval set up in impeller (21) lateral wall on impeller box (3), on the gear train (4) transmission is connected with counter (5) that are used for the count, in being close to be provided with in inlet tube (12) position slip is provided with can seal dog (6) of inlet tube (12), dog (6) are connected when water flow (12), and the locking assembly (7) limits the rotation of the impeller (2).
2. 2. The high-precision rotary wing type water meter of claim 1, wherein the locking assembly (7) comprises a locking disc (71) sleeved on the center shaft (21) in a sliding mode, a plurality of locking pins (72) connected to one side, close to the rotating blades (22), of the locking disc (71) at intervals, at least one locking pin (72) is arranged between two adjacent rotating blades (22), a cross rod (73) is connected to one side, away from the locking pins (72), of the locking disc (71), the other end of the cross rod (73) is fixedly connected with the stop block (6), and when the stop block (6) ascends, a plurality of locking pins (72) and one ends, close to the locking disc (71), of the rotating blades (22) are spaced along the axis direction.
3. 3. The high-precision rotary wing type water meter as set forth in claim 2, wherein a positioning ring (111) with the bottom side on the same plane with the end of the rotary blade (22) along the axial direction of the center shaft (21) is arranged in the installation cavity (11), a tension spring (74) is installed on the positioning ring (111), and the other end of the tension spring (74) is connected with the locking disc (71).
4. 4. The high-precision rotary wing water meter of claim 3, wherein a slope (62) is arranged on one side of the stop block (6) close to the water inlet pipe (12), the slope (62) is positioned at the lower end of the stop block (6), and the material density of the stop block (6) is smaller than that of water.
5. 5. The high-precision rotary wing type water meter of claim 1, wherein the impeller box (3) is integrally connected with a baffle plate (31) on the same side of the through holes, the extending directions of the baffle plates (31) are the same as the water flow direction, the through holes are completely covered, and gaps are formed between the other ends of the baffle plates (31) far away from the impeller box (3) and the impeller box (3) along the radial direction.
6. 6. The high-precision rotary wing type water meter as claimed in claim 1, wherein the water inlet pipe (12) or the water outlet pipe (13) is embedded with a pressure regulating valve (8) for regulating the air pressure balance in the installation cavity (11).

Description

High-precision rotary wing type water meter Technical Field The application relates to the technical field of measuring instruments, in particular to a high-precision rotary wing type water meter. Background The rotary wing type water meter is a product for measuring the total amount of unidirectional water flow of a small-caliber pipeline, and is suitable for measuring household water consumption, such as a pipeline with the caliber of 15mm and 20 mm. The rotary wing type water meter mainly comprises a shell, an impeller measuring mechanism, a speed reducing mechanism and an indicator, and has the characteristic of simple structure. When metering is carried out, water flow enters the impeller box through the opening and impacts the impeller to rotate, and the impeller drives the metering gear set to rotate so that the water meter counter starts to count. However, in actual situations, when the valve is closed, after the water flow finally passes through the impeller, the impeller of the water meter still rotates for a certain number of turns under the inertia effect, so that the counting gear set is driven to rotate, the counter counts to generate errors, and the final counting result statistics of the water meter is affected. Disclosure of utility model In order to overcome the defect that an impeller on a rotary-wing type water meter in the prior art can cause counting errors due to inertial rotation, the application provides a high-precision rotary-wing type water meter. The application provides a high-precision rotary wing type water meter which adopts the following technical scheme: The high-precision rotary wing type water meter comprises a shell and an impeller which is rotationally arranged in the shell, wherein the shell comprises a hollow installation cavity, a water inlet pipe and a water outlet pipe which are respectively arranged at two ends of the installation cavity, an impeller box with a plurality of through holes formed in the circumferential direction is arranged in the installation cavity, the impeller is arranged in the impeller box, a gear set is connected to the installation cavity, and the gear set is in transmission connection with a counter used for counting. Optionally, the locking subassembly includes that the slip cap is located epaxial locking dish, a plurality of interval connect in the locking dish is close to the locking round pin of rotating leaf one side, two adjacent at least one between the rotating leaf the locking round pin, the locking dish is kept away from locking round pin one side is connected with the horizontal pole, the horizontal pole other end with the dog is connected fixedly, when the dog risees, a plurality of the locking round pin along axis direction with a plurality of rotating leaf is close to have the interval between the locking dish one end. Optionally, a positioning ring with the bottom side and the end part of the rotating blade along the axial direction of the central shaft on the same plane is arranged in the mounting cavity, a tension spring is arranged on the positioning ring, and the other end of the tension spring is connected with the locking disc. Optionally, the dog is close to be close to inlet tube one side is equipped with the slope, just the slope is located the dog lower extreme, the material density of dog is less than the density of water liquid. Optionally, the impeller box is gone up in a plurality of all an organic whole in the same side of through-hole is connected with the baffle, a plurality of baffle extending direction is the same with the rivers direction and covers completely the through-hole, a plurality of the baffle keep away from the other end of impeller box with along radial all there being the gap between the impeller box. Optionally, a pressure regulating valve for regulating the air pressure balance in the installation cavity is embedded on the water inlet pipe or the water outlet pipe. In summary, the present application includes at least one of the following beneficial technical effects: 1. The application locks the rotation of the impeller in the water meter when no water flow passes, thereby avoiding the impeller of the water meter from rotating under the inertia effect after the water flow passes, reducing the probability that the counting result finally displayed by the water meter can generate errors and improving the counting accuracy; 2. The application improves the impeller box structure on the water meter, thereby ensuring that the indication number of the water meter is not changed when the water flow flows back or flows back, and eliminating the influence of unexpected situations on the water meter counting. Drawings Fig. 1 is a schematic diagram of the overall structure of a high-precision rotary-wing water meter according to the present application. Fig. 2 is a schematic diagram of a gear train counting structure of a high-precision rotary-wing water meter according to the present application. Fig