A piston type normally open non-resistance dripping water measuring instrument
A technology of normally open and unobstructed measuring instruments, applied in the direction of volume measurement, instruments, measuring capacity, etc., to achieve good promotion and application prospects and satisfy the use conditions
Inactive Publication Date: 2016-04-20
BEIJING HONGWEI CHAODA INSTR MFG
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Problems solved by technology
[0005] The object of the present invention is to provide a kind of piston type normally open unimpeded drip metering instrument, thus solve the aforementioned problems existing in the prior art
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[0036] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.
[0037] Such as Figure 1-6 As shown, the embodiment of the present invention provides a piston-type normally open unimpeded drip meter, including: a valve body, a piston, a first spring 13, a valve opening constant pressure device 17 and a valve closing pressure constant device 18, and the valve body includes a shell And the piston sleeve, the piston sleeve is arranged in the casing, the bottom surface of the piston sleeve is connected with the inner end surface of the casing, a water flow channel is arranged between the inner side wall of the casing and the side wall of the piston sleeve, the flow ...
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The invention discloses a piston type normally-opened and resistance-free dropping water metering device, and relates to the technical field of dropping water measuring instruments. The device comprises a spring, a piston, a metering chamber, a valve opening barostat and a valve closing barostat; water pressure in a water discharging pipeline is quantitatively stored in the metering chamber or released to move the piston so as to enable a water running channel to enter a disconnecting or connecting state; when the water running channel is in the connecting state, the quantitative water enters a water meter under the effect of quantifying pressure, so as to achieve dropping water metering; in addition, the spring is in a natural state when a water fault is opened, and thus, the service life of the spring is long; meanwhile, that water running channel is be sealed through the piston under the elasticity of the spring effect to stop water running and influence the normal water of a user in case of small pressure of the water feeding pipeline can be avoided. The device can meet the user condition and has a good popularization and application prospect.
Description
technical field [0001] The invention relates to the technical field of drip metering instruments, in particular to a piston-type normally open unobstructed drip metering instrument. Background technique [0002] At present, the water meter used for water flow measurement can only be measured when the pressure of the water inlet and the water flow rate reach a certain value. If the water pressure or water flow in the pipeline is very small, the water meter cannot measure. Like this, will cause the loss of water and economic loss because of dripping phenomenon. [0003] In order to be able to measure the flow of dripping water, a drip metering water meter has appeared. The water meter generally includes a spring and a piston. If the pressure at the water inlet is less than the spring force, the piston will seal the water inlet under the action of the spring force to stop the water from flowing. In the initial stage of drip measurement, the pressure at the water inlet of the p...
Claims
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IPC IPC(8): G01F3/14G01F15/00F16K17/30
Inventor 石传艺石伟胜
Owner BEIJING HONGWEI CHAODA INSTR MFG