CN2802453Y

CN2802453Y - Liquid micro-flow meter

Info

Publication number: CN2802453Y
Application number: CN 200520024217
Authority: CN
Inventors: 田恩全
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-06-07
Filing date: 2005-06-07
Publication date: 2006-08-02
Anticipated expiration: 2015-06-07

Abstract

The utility model provides a device for accurately measuring flow quantity of liquid so that water is prevented from being stolen in a slow water dropping way and water supply departments conveniently monitor water use. A liquid micro-flow meter comprises a meter casing provided with a water inlet and a water outlet, wherein a rotating mechanism composed of an impeller and a spline shaft, and a metering mechanism formed by the combination of gears driven by the spline shaft are arranged in the casing. The utility model is characterized in that a piston which upward and downwards slide along the spline shaft is arranged in the meter casing; a water inlet hole and a water outlet hole are arranged on the piston from top to bottom; a micro rotor is arranged in a cavity of the piston coaxially to the spline shaft. The utility model is conveniently arranged on a water supply pipeline. When the water flow quantity is normal, water flow pushes the piston to upward slide to open the water inlet of the meter, and the impeller of the meter rotates to drive an indicating dial of the meter to work. When the flow quantity is reduced, the piston downwards slide to close the water outlet of the meter, micro water enters the cavity of the piston through the water inlet hole on the piston so as to push the micro rotor in the piston to rotate, and similarly the indicating dial of the meter is driven to work.

Description

A kind of fluid microflowmeter scale

Affiliated technical field

The utility model relates to a kind of fluid microflowmeter scale, is particularly useful for domestic meter, belongs to the domestic water supply equipment technical field.

Background technology

In short supply day by day along with water resource, water rate is also in rising trend, and the metering method of existing water meter generally is to rely on current to promote the impeller rotation to drive composite gear rotation metering, so whether water meter measurement accurately depends on the sensitivity of impeller.Under the situation that the water swivel micrometeor drips, impeller does not rotate usually, and a lot of people utilize the metering defective of existing water meter in the daily life, slowly drips, to reach few friendship or not hand over the purpose of water rate.

Summary of the invention

The purpose of this utility model is to provide a kind of gauging table of accurate measurement fluid flow, prevents to steal water with the slow form of dripping, so that water supply department monitoring water.

The technical solution of the utility model is achieved in that this a kind of fluid microflowmeter scale, its basic structure comprises the gauging table housing that is provided with intake-outlet, be provided with in the housing by impeller, the rotating mechanism that splined shaft constitutes and by the driven off by shaft gear combination of spline metering mechanism, it is characterized in that: the piston that slides up and down along housing is set in the gauging table housing, piston upper and lower settings paddle hole, the piston cavity female splined shaft is provided with little rotor, and splined shaft is provided with jack clutch with little armature spindle and impeller shaft separation or interlock.

The piston of described fluid microflowmeter scale is arranged at gauging table impeller top, the water delivering orifice of its relative low level sealing gauging table.

The intake-outlet of described fluid microflowmeter scale is provided with along gauging table housing tangent to periphery direction.

The inlet opening of the piston of described fluid microflowmeter scale is provided with in the piston bottom surface.

The piston apopore of described fluid microflowmeter scale is in the piston-top surface setting.

Described fluid microflowmeter scale, the piston apopore of gauging table is provided with unidirectional door close.

Described fluid microflowmeter scale piston top splined shaft is provided with back-moving spring.

The technical solution adopted in the utility model, can be installed on easily on the supply channel, streamflow just often, piston is promoted to go up sliding by current, open the water delivering orifice of gauging table, the flowmeter wheel rotation drives the work of gauging table display disc, when flow reduces, piston glides and seals the water delivering orifice of gauging table, minor amount of water enters piston cavity by the inlet opening on the piston, promote the little rotor rotation in the piston, equally can be through jack clutch in impeller and the work of gauging table display disc, water meter does not change the water waste that causes when effectively having avoided dripping.

Description of drawings

Fig. 1 is the structural representation of the utility model fluid microflowmeter scale;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is the B-B sectional view of Fig. 1;

Fig. 4 is the course of work synoptic diagram of fluid microflowmeter scale.

Among the figure:

1, housing 2, inlet opening 3, impeller 4, little rotor 5, back-moving spring 6, splined shaft 7, piston loam cake 8, apopore 9, water meter display disc 10, door close 11, piston 12, back shaft 13, jack clutch 14, water inlet 15, water delivering orifice 16, guide chute

Embodiment

The work synoptic diagram of fluid microflowmeter scale shown in Fig. 1 and Fig. 4 correspondence, Fig. 2 and Fig. 3 are respectively the synoptic diagram that is provided with of little rotor 4 of the utility model and impeller 3.Show among the figure that design feature of the present utility model is between the impeller 3 of gauging table and water meter display disc 9 piston 11 to be set, the little rotor 4 coaxial with flowmeter splined shaft 6 is set, piston upper and lower

settings paddle hole

2,8 in the piston cavity.

Situation piston 11 at normal discharge is promoted by current to slide on guide chute 16, and jack clutch 13 separates up and down, and little rotor does not change, flowing water enters from water inlet 14, flow out from water delivering orifice 15, gauging table impeller 3 rotates the water meter display disc work that drives under flowing water promotes, as shown in Figure 4; When flow reduced, piston glided and seals the water delivering orifice 15 of gauging table, jack clutch 13 closures, minor amount of water enters piston cavity by the inlet opening on the piston 2, flows out from apopore 8, and the little rotor 4 that promotes in the piston rotates, equally can be in impeller and the work of water meter display disc, as shown in Figure 1.

Steal water for fear of the water meter reverse graft, the utility model also is provided with unidirectional door close 10 in piston cavity.

Elongation technology scheme of the present utility model is that back-moving spring 5 is set above piston 11, hour helps a piston reset in the water yield.

Micro-flowmeter scale intake-

outlet

14,15 of the present utility model is provided with along gauging table housing tangent to periphery direction, and the paddle hole of

piston cavity

2,8 is crisscross arranged in the piston upper and lower end face.

Foregoing description only proposes as a kind of enforceable technical scheme of fluid microflowmeter scale described in the utility model, not as the single restrictive condition to its structure.

Claims

1, a kind of fluid microflowmeter scale, its basic structure comprises the gauging table housing that is provided with intake-outlet (14,15), be provided with in the housing by impeller (3), the rotating mechanism that splined shaft (6) constitutes and by the driven off by shaft gear combination of spline metering mechanism, it is characterized in that being provided with in the gauging table housing piston (11) that slides up and down along housing, piston upper and lower settings paddle hole (2,8), the piston cavity female splined shaft is provided with little rotor (4), and splined shaft is provided with jack clutch (13) with little armature spindle and impeller shaft separation or interlock.

2, fluid microflowmeter scale according to claim 1 is characterized in that piston is arranged at gauging table impeller (3) top, the water delivering orifice of its relative low level sealing gauging table.

3, fluid microflowmeter scale according to claim 1 is characterized in that, the intake-outlet of gauging table is provided with along gauging table housing tangent to periphery direction.

4, fluid microflowmeter scale according to claim 1 is characterized in that, the inlet opening of the piston of gauging table (2) are provided with in the piston bottom surface.

5, fluid microflowmeter scale according to claim 1 is characterized in that, the piston apopore (8) of gauging table is in the piston-top surface setting.

6, fluid microflowmeter scale according to claim 5 is characterized in that, the piston apopore (8) of gauging table is provided with unidirectional door close (10).

7, fluid microflowmeter scale according to claim 1 is characterized in that, gauging table piston top splined shaft is provided with back-moving spring (5).