Cleaning and filtering device of gas meter
A technology of filtering device and gas meter, which is applied to measuring devices, instruments, liquid/fluid solid measurement, etc., can solve the problems of reducing the measurement accuracy of gas meters and reducing the service life of diaphragms, and achieves a simple structure, prolongs service life, and improves The effect of metering accuracy
Inactive Publication Date: 2010-10-06
荣成市宇翔实业公司
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Problems solved by technology
[0004] In order to overcome the lack of a cleaning filter device on the air intake end in the prior art, which leads to a decrease in the metering accuracy of the gas meter and a reduction in the service life of the diaphragm, the invention provides a cleaning filter device for the gas meter, the cleaning filter device for the gas meter Not only the structure is simple, the cost is low, but also the assembly and replacement are easy, and the effect of filtering impurities is good
Method used
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[0012] As shown in the drawings, a cleaning and filtering device for a gas meter includes a closed casing 1 and an air intake pipe 2 assembled on the casing 1 .
[0013] In the accompanying drawings, the housing 1 is composed of an upper housing 101 and a lower housing 102. The upper and lower housings are respectively pressed with connecting skirts, and the connecting skirts are rolled along its circumference through a sealing clip 103. The press is press-fitted and sealed together, so that the inner cavity of the housing 1 forms a closed inner cavity. Other components of the gas meter, such as a diaphragm metering chamber, a control valve (including a valve cover and a valve seat), a connecting rod gear transmission mechanism and a counter, etc. are all assembled in the housing 1 .
[0014] In the accompanying drawings, a sealed fit is realized between the outer body of the intake pipe 2 and the housing 1 . The inner cavity of the air intake pipe 201 communicates with the c...
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The invention relates to a cleaning and filtering device of a gas meter, comprising a housing and an intake tube assembled on the housing, wherein the housing is formed by pressing and sealing an upper housing and a lower housing through a sealing element; and the external body of the intake tube and the housing are sealed and assembled, and the inner cavity of the intake tube is communicated with the inner cavity of the sealed housing. The invention is characterized in that the intake tube is provided with a filter which is composed of an outline border and a filter screen, and the outline border is assembled on a shoulder of a counter bore on the inner cavity wall of the intake tube. The filter screen filters particle impurities in pipelines, thereby preventing the particle impurities and a film from rubbing, and improving tightness between the parts and the metering precision of the gas meter. The invention has the advantages of simple structure, low cost and convenient assembly and replacement.
Description
technical field [0001] The invention relates to an accessory of a flow measuring instrument, in particular to a cleaning and filtering device for a gas meter. Background technique [0002] Membrane gas meter is an instrument used to measure the cumulative flow of combustible gas. It has been widely used in households, hotels and restaurants. It is mainly composed of closed shell, diaphragm metering chamber, control valve, connecting rod gear transmission mechanism and counter and other main components. Its working principle is to introduce the gas that enters the inner cavity of the closed shell through the intake pipe on the shell into the diaphragm metering chamber with constant volume, and use the turning motion of the diaphragm to transmit the power to the control valve through the connecting rod transmission mechanism, and push the control valve. The movement controls the opening and closing of the diaphragm metering chamber, and continuously realizes the intake and ex...
Claims
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Inventor 邹积健
Owner 荣成市宇翔实业公司