CN101162160A

CN101162160A - Rotor highly sensitive water gauge

Info

Publication number: CN101162160A
Application number: CNA2007100358435A
Authority: CN
Inventors: 郭惠均
Original assignee: Hunan Changde Water Meter Manufacture Co Ltd
Current assignee: Hunan Changde Water Meter Manufacture Co Ltd
Priority date: 2007-09-28
Filing date: 2007-09-28
Publication date: 2008-04-16
Anticipated expiration: 2027-09-28
Also published as: CN100529681C

Abstract

The invention provides a rotor high-sensitivity water meter, comprising a meter cover, a rotor measuring mechanism arranged at the lower part of the meter cover, and an upper indicating mechanism corresponding to the rotor measuring mechanism; an impeller box in the measuring mechanism is of a round-basin shape, and an adjusting board is arranged at the bottom of the impeller box, meanwhile, the impeller is arranged at a fixing support center, and a filtering net is arranged outside the impeller box; a round filtering cylinder which is concave downward is arranged at the lower part of the filtering net, and a guide shaft is arranged at the bottom of the filtering net at the outer circumference of the round filtering cylinder, and a water-sealing valve which can move up and down is ringed on the guide shaft; a squared strip which is tightly matched with the impeller box is arranged at the inner wall of the filtering net; a water hole is arranged in the squared strip, and a jet hole is provided at the position of the impeller box with which the water hole is connected. The water meter has the advantages that a water-sealing valve is arranged on the base of the prior common water meter, and the filtering net adopts a round filtering cylinder to greatly increase the water flow of the filtering net, therefore, the pressure loss of the rotor high-sensitivity water meter is reduced.

Description

Rotor highly sensitive water gauge

Technical field:

The present invention relates to the rotor water gauge of a kind of nominal bore 15mm～50mm

Background technology:

At present the water meter that uses of China's water supply department generally all is common rotor water gauge, when discharge less than make flow (flow that makes of nominal bore 15mm water meter is 10l/h, bore more ambassador to move flow high more) time water meter do not measure.Cause many users to utilize this point, take to reach the purpose that water is not paid the fees with the rill or the way of dripping.At this situation, water supply department has used some highly sensitive water gauge, but after Running-water Company's reflection use highly sensitive water gauge was in the market arranged, the 5th buildings and above user's the water yield diminished, even water use peak was used less than water during the phase.The pressure loss Δ P≤0.1MPa of the 6th regulation rotor water gauge in State Standard of the People's Republic of China GB/T778.1-1996 " cold-water meter ".

Summary of the invention:

In order to overcome the big shortcoming of the highly sensitive water gauge pressure loss in the market, the purpose of this invention is to provide a kind of have simple in structure, be convenient to make, the rotor highly sensitive water gauge of metering mechanism that the pressure loss is little.

This rotor highly sensitive water gauge comprises the rotary wind type metering mechanism of bottom in watchcase and the watchcase and top indicating mechanism correspondingly, and wherein indicating mechanism comprises the pointer-type of nominal bore 15mm～50mm, digital, dry type or liquid-seal type; Metering mechanism comprises gearcase, impeller box, impeller, adjustable plate and water strainer, it is characterized in that, impeller box is circle basin shape, there is the inlet opening side, the bottom is equipped with adjustable plate, the impeller box center fixation has the stationary center of level altitude, and impeller set is contained on the stationary center, and water strainer is assemblied in outside the impeller box; The oriented recessed drainage cylinder in water strainer bottom, there are several bar shapeds or square treatment hole in the side of drainage cylinder and bottom surface, water strainer bottom at drainage cylinder outer shroud, 2～4 axis of guides are straight up arranged, seal water valve moving up and down is contained on the axis of guide by borehole jack, one and the close-fitting side's bar of impeller box are arranged on the water strainer inwall, in square bar, have the limbers of a level, the position that on impeller box, links to each other with the limbers, have the jet orifice of a level, jet orifice becomes 25 °～35 ° angles with the limbers.Seal water valve is a disc, and bottom centre is the cylindrical, massive body, seal water valve polyoxymethylene injection mo(u)lding.When discharge is big, the treatment hole of most of current in the drainage cylinder of water strainer bottom washed seal water valve open and entered from the impeller box inlet opening, and impeller is rotated and measured, another fraction trace current then impact impeller by the jet orifice on the impeller box, and impeller is rotated and measured; And when discharge little, in the time of can not washing seal water valve open, micro-current are then by the limbers on the water strainer, the jet orifice from the impeller box enters and promotes impeller and measure.So just reached and dripped, water meter is the purpose of metering just.

Advantage of the present invention is: the impeller box and the water strainer that only change water meter on the basis of original common water meter, increased a seal water valve, wherein the top employing stationary center of impeller box has been simplified assembly technology, reduce production cost, increased the distance that seal water valve fluctuates; And the water inlet of water strainer employing drainage cylinder, increase the water amount of water strainer greatly, thereby reduced the pressure loss of rotor highly sensitive water gauge.Seal water valve adopts the bigger polyoxymethylene of proportion (ABS commonly used) injection mo(u)lding, has removed the metal weights pad, has reduced the pollution to water quality.

Description of drawings:

Fig. 1 is a diagrammatic cross-section of the present invention

Fig. 2 is the enlarged diagram of metering mechanism of the present invention

Fig. 3 is a jet orifice E-E diagrammatic cross-section of the present invention

Among the figure: 1, watchcase, 2, water strainer, 3 seal water valves, 4, stationary center, 5, adjustable plate, 6, impeller box, 7, impeller, 8, gearcase, 9, indicating mechanism, 10, packing washer, 11, watch glass, 12, the copper shade assembly, 13, the drainage cylinder, 14 axis of guides

Embodiment:

Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in detail as follows:

In Fig. 1 and Fig. 2, impeller box 6 is circle basin shape, the inlet opening is arranged on the side, adjustable plate 5 is equipped with in the bottom, the center fixation of impeller box 6 has stationary center 4, impeller 7 is enclosed within on the stationary center 4, water strainer 2 is assemblied in outside the impeller box 6, the oriented recessed drainage cylinder 13 in water strainer 2 bottoms, and there is the treatment hole of 40 bar shapeds the side of drainage cylinder 13, there are 150 square treatment holes the bottom surface, 3 axis of guides of evenly arranging straight up 14 are arranged at the bottom at the water strainer 2 of the outer shroud of drainage cylinder 13, and seal water valve 3 is enclosed within on the axis of guide 14 by 3 apertures, seal water valve 3 can move up and down, in Fig. 3, one and impeller box 6 close-fitting side's bars are arranged on water strainer 2 inwalls, in square bar, have the limbers A of a level, the position that on impeller box 6, links to each other with limbers A, have the jet orifice B of a level, jet orifice B becomes 30 ° angle with limbers A, and seal water valve 3 is a disc, bottom centre is the cylindrical, massive body, uses the polyoxymethylene injection mo(u)lding.

Installation method is as follows: be contained on the axis of guide of water strainer 2 with reference to accompanying drawing 1 and Fig. 2 seal water valve 3, water strainer 2 is contained on the impeller box 6, and limbers A on the water strainer 2 and the aligning of the jet orifice B on the impeller box 6, impeller 7 is inserted on the stationary center 4 of impeller box 6 gently, cover upper reversing gear box 8 is formed the metering mechanism of water meter again; Water meter indicating mechanism 9 alignd with the positioning spigot of gearcase 8 put into gearcase 8, then indicating mechanism 9 and metering mechanism are put into watchcase 1 together, indicating mechanism among Fig. 1 be pointer-type, and then the pad upper sealing washer 10, cover watch glass 11, tighten the copper cover in the copper shade assembly 12.When needing to regulate the water meter precision, turn on the copper cover, take out indicating mechanism 9 and metering mechanism, take off the water strainer in the metering mechanism, regulate the adjustable plate 5 on the impeller box 6 then, just can debug the error in dipping of water meter.

Claims

1. rotor highly sensitive water gauge comprises the rotary wind type metering mechanism of bottom in watchcase and the watchcase and top indicating mechanism correspondingly, and wherein indicating mechanism comprises the pointer-type of nominal bore 15mm～50mm, digital, dry type or liquid-seal type; Metering mechanism comprises gearcase, impeller box, impeller, adjustable plate and water strainer, it is characterized in that, impeller box is circle basin shape, there is the inlet opening side, the bottom is equipped with adjustable plate, the impeller box center fixation has the stationary center of level altitude, and impeller set is contained on the stationary center, and water strainer is assemblied in outside the impeller box; The oriented recessed drainage cylinder in water strainer bottom, there are several bar shapeds or square treatment hole in the side of drainage cylinder and bottom surface, water strainer bottom at drainage cylinder outer shroud, 2～4 axis of guides are straight up arranged, seal water valve moving up and down is contained on the axis of guide by borehole jack, one and the close-fitting side's bar of impeller box are arranged on the water strainer inwall, in square bar, have the limbers of a level, the position that on impeller box, links to each other with the limbers, have the jet orifice of a level, jet orifice becomes 25 °～35 ° angles with the limbers.

2. rotor highly sensitive water gauge according to claim 1 is characterized in that, seal water valve is a disc, and bottom centre is the cylindrical, massive body, seal water valve polyoxymethylene injection mo(u)lding.