CN2556599Y - High precision water meter - Google Patents
High precision water meter Download PDFInfo
- Publication number
- CN2556599Y CN2556599Y CN 02276025 CN02276025U CN2556599Y CN 2556599 Y CN2556599 Y CN 2556599Y CN 02276025 CN02276025 CN 02276025 CN 02276025 U CN02276025 U CN 02276025U CN 2556599 Y CN2556599 Y CN 2556599Y
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- CN
- China
- Prior art keywords
- water
- water meter
- valve
- spool
- holding valve
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model discloses a highly precise measuring water meter which consists of a shell, a measuring indicating mechanism, a water inlet and a water outlet. A holding valve is arranged in a large water intake channel in the shell. A large valve port of the holding valve is blocked on the inner end face of the water inlet. The holding valve is a hollow holding valve, the bottom part of which is communicated with an impeller box through a jet flow catheter. The holding valve consists of a valve core, a return spring and a valve core nest. The jet flow catheter communicated with the impeller box is arranged at the bottom of the valve core nest. The structure has the advantages that: since the holding valve and the jet flow catheter are added in the original water meter, the holding valve has an automatic change function based on water flow, so as to avoid dead areas that can not be measured, thereby not only avoiding deficiencies of measurement by dripping of the water meter, but also being capable of using water based on a smallest flow without influencing measurement precision, meanwhile, the measuring range of the water meter is enlarged and the measurement precision during the whole process of the water meter is prompted.
Description
Technical field
The utility model relates to tap water flow measurement device technology, specifically is a kind of high-precision measuring water meter.
Technical background
At present, be extensive use of the measuring instrument of rotor water gauge as tap water, they mainly comprise housing and rotary wind type metering transmission indicating mechanism.Tap water is imported by water inlet end with a determined power, enters impeller box through water strainer, impacts wheel rotation, realizes the measurement of the water yield is indicated through metering transmission indicating mechanism, is flowed out by water delivering orifice then.The deficiency of this class water meter existence is at present: metering transmission indicating mechanism is because the influence of frictional resistance, make water meter when current are below 10 liters/hour, can not promote to measure the metering of transmission indicating mechanism, if therefore the user is leaked at following water of this flow or water tap fault low discharge, water meter can't measure, make power supply department also can not receive water rate, cause the waste of water resource.
Summary of the invention
The purpose of this utility model is to avoid the prior art above shortcomings, designs a kind of high-precision measuring water meter that also can normally measure under low discharge.
Technic relization scheme of the present utility model is as follows:
A kind of high measuring accuracy water meter, be made of housing, metering indicating mechanism and water inlet, water delivering orifice, in the water inlet major path retaining valve be housed in the housing, the big valve port of retaining valve gets lodged in the water inlet inner face, retaining valve hollow, the bottom is communicated with impeller box by fluidic conduit.
Described retaining valve is made up of spool, back-moving spring and spool bore seat, the spool front end face forms big valve port and combines with the water inlet inner face, spool hollow, the rear end insert one with spool bore seat that its external diameter matches in, back-moving spring is contained between the front end face rear portion and spool bore seat of retaining valve spool, a fluidic conduit is arranged in the bottom of spool bore seat, be communicated with impeller box.
When water consumption during less than the minimum flow of water meter, closed check valve water inlet, current can only flow to fluidic conduit by the aperture in the middle of the retaining valve, because the amplification of fluidic conduit quickens current, impel wheel rotation, and metering mechanism can normally be measured.When water consumption surpassed the water meter minimum flow, current were washed retaining valve open, and current enter original water inlet major path, and the spool of retaining valve moves and closes fluidic conduit simultaneously, and water meter still can normally measure.
The advantage of this structure is: owing to set up retaining valve and fluidic conduit in original water meter, retaining valve has according to current size automatic switching function, when water consumption during less than the minimum flow of water meter, retaining valve can be closed big traffic channel automatically, weep enters fluidic conduit by forcing metering mechanism's metering in the current acceleration, make water meter can eliminate the metering dead band, both prevented the deficiency that water meter drips and measures, again can be at the above water of minimum flow, do not influence measuring accuracy, simultaneously, enlarge the measures range of water meter, improved the omnidistance measuring accuracy of water meter.
Description of drawings
Fig. 1 is the structural representation of this high-precision measuring water meter.
Embodiment
High-precision measuring water meter shown in Figure 1, it is made of housing 1, metering indicating mechanism 11, retaining valve and water inlet 6, water delivering orifice 10, retaining valve is installed in the water inlet major path 8 in the water meter case 1, retaining valve is made up of spool 4, back-moving spring 3 and spool bore seat 7, the front end face of spool 4 combines with water inlet 5 inner faces and forms big valve port, targeting part 6 inserts in water inlet 5 endoporus, another small end of spool 4 inserts in the spool bore seat 7, dress back-moving spring 3 between the front end face rear portion of retaining valve spool 4 and the spool bore seat 7.In the bottom of this spool bore seat 7 fluidic conduit 2 is installed, the other end of fluidic conduit 2 is over against the intake chamber of the impeller box 9 of metering mechanism.Spool 4 hollows of retaining valve, current can connect fluidic conduit 2.In this structure, during less than certain value, back-moving spring 3 pressed spools 4 front end faces of retaining valve stop the low discharge current directly to flow to into water major path 8 at current.Force the aperture of rill water gaging from retaining valve spool 4 to flow to fluidic conduit 2, directly impact impeller, make wheel rotation by the current acceleration back of fluidic conduit 2.When current became big, hydraulic pressure overcame spring force, washed retaining valve open, and spool 4 moves blocks fluidic conduit 2, and current are passed through by water inlet major path 8, realized normally metering.
Claims (2)
1, a kind of high-precision measuring water meter, constitute by housing (1), metering indicating mechanism (11) and water inlet (6), water delivering orifice (10), it is characterized in that in housing (1), in the water inlet major path (8) retaining valve being housed, the valve port of retaining valve gets lodged in water inlet (6) inner face, retaining valve hollow, the bottom is communicated with impeller box (9) by fluidic conduit (2).
2, a kind of high-precision measuring water meter according to claim 1, it is characterized in that retaining valve is made up of spool (4), back-moving spring (3) and spool bore seat (7), spool (4) front end face cooperates with water inlet (6) inner face, spool (4) hollow, insert in the spool bore seat (7) that matches with its external diameter the rear end, back-moving spring (3) is contained between the front end face rear portion and spool bore seat (7) of retaining valve spool (4), in the bottom of spool bore seat (7) fluidic conduit (2) is arranged, be communicated with impeller box (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02276025 CN2556599Y (en) | 2002-08-06 | 2002-08-06 | High precision water meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02276025 CN2556599Y (en) | 2002-08-06 | 2002-08-06 | High precision water meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2556599Y true CN2556599Y (en) | 2003-06-18 |
Family
ID=33739955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02276025 Expired - Fee Related CN2556599Y (en) | 2002-08-06 | 2002-08-06 | High precision water meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2556599Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008119204A1 (en) * | 2007-03-30 | 2008-10-09 | Tianjin Kailida Control Technology Development Co., Ltd | A water dropping flow sensor |
-
2002
- 2002-08-06 CN CN 02276025 patent/CN2556599Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008119204A1 (en) * | 2007-03-30 | 2008-10-09 | Tianjin Kailida Control Technology Development Co., Ltd | A water dropping flow sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |