CN201463950U

CN201463950U - Anti-drip high-precision water meter

Info

Publication number: CN201463950U
Application number: CN200920100600XU
Authority: CN
Inventors: 方士文
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-08-14
Filing date: 2009-08-14
Publication date: 2010-05-12
Anticipated expiration: 2019-08-14

Abstract

The utility model relates to an anti-drip high-precision water meter, which is characterized in that the lower end part of a meter shell is respectively provided with four water through holes, two of the water through holes are communicated with an elbow on a water inlet pipe, the other two through holes are communicated with an elbow on a water outlet pipe, a positioning shaft which is fixed on the central part of two sides inside the meter shell in the axial direction is connected with a long blind hole which is arranged on two ends of a connection rod in a plugging way, the middle part is provided with a piston which moves left and right along the axial direction of the connection rod, two symmetric water closing bodies are fixed on two ends of the connection rod, two symmetric springs are also sleeved on the connection rod, one end of the spring is pushed against the inner side of the water closing body, and the head parts of two ends of the connection rod are provided with a limiting pin. The anti-drip high-precision water meter has simple structure, reasonable design, low production cost, multiple adjustable capacity ways, convenient calibration, no dripping, stable performance and high measuring precision, is free from leaking water being reversely joined, and has the inversion function. The water meter is free from being restricted by the water flow and can be installed at any position without influencing the measuring precision. A counter can adopt a dry-type or a liquid-sealed structure and is free from being contacted with the water to be measured, so the reading can be maintained clear.

Description

The anti-high precision water meter that drips

Technical field

The utility model relates to a kind of water meter, especially relates to a kind of anti-high precision water meter that drips.

Background technology

At present, domestic water meter commonly used is A, B, three kinds of water meters of C level, its measuring principle is: current make it rotation from the impeller that the watchcase water inlet impacts the inside of water meter, pass through the revolution of gear reduction continuous recording impeller then, thereby recorded stream is through the integrated flux of water meter, this type of water meter is that indirect measurement flow claims the reasoning type water meter again, perhaps flow velocity formula water meter through the water meter of the water yield to measure water velocity.Because the restriction on making, flow velocity formula water meter all can't reach the D class precision, therefore, present D level water meter all adopts the volumetric metering principle, its working method is to adopt piston rotation principle, when moving under the driving of measuring sensors such as piston at current, water by the volume that measuring sensor limited passes through water meter, the counting mechanism that is connected with measuring sensor is write down the measuring sensor times of exercise, the product of the volume that times of exercise and measuring sensor limited is exactly the Total Water by water meter, so claim actual measurement formula water meter again.But the piston in this table is to roll to add sliding process along the metering ventricular wall motion, and piston places the gap of measuring room to have only 0.02-0.1MM, and harmless granule impurity and fine sand all have the metering performance and the serviceable life that can have a strong impact on water meter in the pipe network.Therefore this table is higher to the pipeline water quality requirement, recommends to be installed in the place of non-direct water supply.And price is expensive, and is more in countries use such as America and Europes, and in China, is subjected to the restriction of water supply network water quality and economic development, also do not enter the stage of practical application.

Summary of the invention

The purpose of this utility model is to overcome the weak point that exists in the above-mentioned technology, provides a kind of simple in structure, reasonable in design, the anti-high precision water meter that drips that measuring accuracy is high.

In order to achieve the above object, the technical solution adopted in the utility model is: the watchcase lower end part is respectively equipped with four limberss, wherein two holes are connected with bend pipe on the water inlet pipe, in addition two holes are connected with bend pipe on the rising pipe, the centre, both sides axially is fixed with locating shaft and connecting rod two ends and has the elongated blind hole and plug in the watchcase, the piston that moves to the left and right along pitman shaft is equipped with in the middle part, the connecting rod two ends are fixed with the water shutoff body of symmetry, go back the spring of suit symmetry on the connecting rod, the one end leans in water shutoff body inboard, and connecting rod two ends head is provided with spacer pin.

The utility model has the advantages that:

Simple in structure, reasonable in design, low cost of manufacture, the volume adjustable mode is many, and calibration is convenient, stops to drip, stable performance, the measuring accuracy height, not water outlet of reversal connection has the check function.Water meter is not limited by current, can install at an arbitrary position and does not influence measuring accuracy.Counter can adopt dry type or fluid-tight structure, and does not contact with tested water, can make reading keep clear.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the utility model water shutoff body structure synoptic diagram.

Embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.

By Fig. 1-Fig. 2 as can be known, the utility model watchcase 1 lower end part is respectively equipped with four limberss, wherein two holes are connected with bend pipe on the water inlet pipe 9, in addition two holes are connected with bend pipe on the rising pipe 8, the centre, both sides axially is fixed with locating shaft 7,10 and connecting rod 5 two ends and has the elongated blind hole and plug in the watchcase 1, be equipped with along the piston 6 of connecting rod 5 axial move left and right the middle part, connecting rod 5 two ends are fixed with the water shutoff body 2 of symmetry, go back the spring 4 of suit symmetry on the connecting rod 5, the one end leans in water shutoff body 2 inboards, and connecting rod 5 two ends heads are provided with spacer pin 3.

There is circular shaft register pin 12 at described spacer pin 3 crotch places, and spacer pin 3 bottoms are provided with extension spring 11, and its lower end and connecting rod 5 join.

Be provided with counter 13 in watchcase 1 left end lower sidewall.

The utility model is after water enters into circular watchcase from a side of water inlet, promoting piston moves to opposite side, the water of piston opposite side is pushed out from the opposite side rising pipe, when piston moves on to a certain degree, begin to compress power assistant spring, the water shutoff body is produced and piston acting force in the same way, and when piston arrives was touched spacer pin, spacer pin prolonged the locating shaft rotation, spacer pin is pulled out from locating shaft, under the effect of the power assistant spring of two water shutoff bodies and connecting rod, move rapidly forward, change the Inlet and outlet water inlet, for preventing in the change process, water directly flows away from one-sided, and the water shutoff body is wanted enough greatly, only when water inlet pipe or rising pipe are sealed entirely, rising pipe or water inlet pipe just can expose, meeting after the water shutoff body puts in place is stuck on the locating shaft under the effect of extension spring by the opposite side spacer pin, and water enters circular watchcase from opposite side, begin as top process, to swivel motion, so repeatedly, each 1 water yield of record on counter that makes a round trip.Water constantly promotes piston motion in operation, and the counter that is connected with piston is write down the times of exercise of piston, and the product of the volume of times of exercise and circular watchcase is exactly the Total Water by this water meter.

Claims

1. prevent dripping the high precision water meter for one kind, comprise watchcase, water inlet pipe, rising pipe, it is characterized in that: be respectively equipped with four limberss at watchcase (1) lower end part, wherein two holes are connected with bend pipe on the water inlet pipe (9), in addition two holes are connected with bend pipe on the rising pipe (8), centre, the interior both sides of watchcase (1) axially is fixed with locating shaft (7), (10) having the elongated blind hole with connecting rod (5) two ends plugs, be equipped with along the piston (6) of the axial move left and right of connecting rod (5) middle part, connecting rod (5) two ends are fixed with the water shutoff body (2) of symmetry, go back the spring (4) of suit symmetry on the connecting rod (5), the one end leans in water shutoff body (2) inboard, and connecting rod (5) two ends head is provided with spacer pin (3).

2. the anti-high precision water meter that drips according to claim 1, it is characterized in that: there is circular shaft register pin (12) at described spacer pin (3) crotch place, and spacer pin (3) bottom is provided with extension spring (11), and its lower end and connecting rod (5) join.

3. the anti-high precision water meter that drips according to claim 1 is characterized in that: be provided with counter (13) in watchcase (1) left end lower sidewall.