Device facilitating accurate metering of water meter

Abstract

The invention discloses a device facilitating accurate metering of water meter. The device comprises a shell, the shell is fixedly communicated with a fixing cavity, the end, away from the shell, of the fixing cavity is fixedly communicated with a water inlet pipe, two sliding grooves are fixedly connected into the water inlet pipe and are symmetrically arranged, a reciprocating lead screw is horizontally arranged at the central axis in the water inlet pipe, the reciprocating lead screw is in threaded connection with a screw cap, the two ends of the screw cap are fixedly connected with limiting rods correspondingly, the two limiting rods are slidably connected to the sliding grooves correspondingly, a plurality of blades are arranged at one end of the reciprocating lead screw in an annular array mode, a filter screen is fixedly connected into the water inlet pipe, and a rotating shaft is fixedly connected to the center of the filter screen. When the dirt scraper is attached to the filter screen, the dirt scraper rotates along with the threaded sleeve to effectively clean scrap iron on the surface of the filter screen, so that the filter screen can be prevented from being blocked while the scrap iron is filtered.

Description

technical field [0001] The invention relates to the technical field of water flow meters, in particular to a device for accurate metering of water meters. Background technique [0002] Water flow meter is an instrument for measuring water flow. Most of them measure the cumulative flow of water. They are generally divided into two types: volumetric water meter and speed type water meter. They originated in the United Kingdom. The development of water meters has a history of nearly two hundred years. When specifying the specifications, you should first estimate the size and flow range of the flow normally used, and then choose a water meter with a common flow close to this value. [0003] The water flowmeter includes a turbine flowmeter, which measures the water flow through the rotation of the impeller inside the turbine flowmeter by the impact of the water flow. There are still many old-fashioned iron pipes in the existing water pipelines for water transportation, which are ...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the following shortcomings in the prior art. There are still many old-fashioned iron pipes in the existing water pipes for water transportation. After a long time, iron filings are easy to be generated and enter the flowmeter with the water flow. There is a high water pressure in the middle pipe, so the impact of the water flow makes the iron filings hit the blades of the worm wheel flowmeter, which is easy to cause damage to the blades, resulting in a large error in the internal measurement of the water flowmeter, and the proposed method is convenient Water meter precision metering device

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