CN2443348Y

CN2443348Y - Anti-freezing watermeter

Info

Publication number: CN2443348Y
Application number: CN 00253700
Authority: CN
Inventors: 罗伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-09-08
Filing date: 2000-09-08
Publication date: 2001-08-15
Anticipated expiration: 2010-09-08

Abstract

The utility model discloses an anti-freezing water meter which can be normal use in coldness environment conditions. An elastic air bag is arranged in a shell body of the water meter; the volume of the air bag becomes small when the air bag is suffered from pressure; the air bag is in displacement arrangement with reading and a pointer on a number representation meter disc; the air bag is arranged in the water meter; when water in the water meter is frozen to expand, the volume of air bag becomes small because the air bag is pressed; thus, a certain space is left for water conversion of liquid and solid; accordingly, the utility model avoids damage to a meter cover of the water meter and other components in the water meter because of water volume expansion.

Description

Anti-freezing water meter

The utility model discloses a kind of flow meter of liquid, specifically is a kind of water meter.

When existing water meter uses in the winter time, because cold weather and freezing situation happens occasionally.Particularly the water meter of installing and using out of doors in northern China often causes the bursting by freezing of water gage glass table lid, makes water meter normally to use.To cause the freezing main cause of above-mentioned water meter be water meter freeze under the cold temperature real after its volume will become greatly when solid-state because water becomes from liquid state, will produce certain bulging force, weakness---the water gage glass table covers freezing to cause water meter.

The purpose of this utility model is to provide a kind of Anti-freezing water meter that can normally use under the cold environment condition.

For achieving the above object, the technical solution adopted in the utility model is: a kind of Anti-freezing water meter is characterized in that: be provided with flexible air bag in the housing of water meter, and its smaller volume during this air bag pressurized, air bag is arranged with reading and pointer dislocation on the numeration dial plate.

Technique scheme can avoid water gage glass Biao Gaiyin environment temperature to cross low and freezing phenomenon generation, this is because added air bag in water meter, when water freezing in the water meter expands, air bag will be squeezed and smaller volume, therefore feedwater leaves certain space by the solid-state process of liquid state change, thereby has avoided expanding to the destruction of water gage glass table lid and interior other member of table because of the table inner volume; When temperature rising water was liquid by solid-state change, bulging force reduced until its normal condition, and air bag restores, and water meter normally uses.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation of air bag.

Below in conjunction with drawings and Examples the utility model is further described.

Embodiment

Referring to Fig. 1, the utility model has adopted the structure of water meter in the prior art, is provided with flexible air bag 10 in its housing, its smaller volume during these air bag 10 pressurizeds, air bag 10 should be selected anti-chloric acid for use, put non-toxic material manufacturing aging, good springiness, inflatable air or other gas in the air bag 10.Described air bag 10 cross sections are circular, and as shown in Figure 1, it is between the glass table lid 20 and numeration dial plate 30 of water meter, and the utricule of air bag 10 is arranged with reading and pointer 31 dislocation on the numeration dial plate 30.Its round section is not to be the unique selection in air bag 10 cross sections, is optional shape as ellipse or rectangle etc. yet.

Described air bag 10 is circular, its diameter conforms to the diameter of numeration dial plate 30, distance between the diameter of the round section of air bag 10 and glass table lid glass 20 and the numeration dial plate 30 conforms to, and can avoid hindering the phenomenon that reads with the normal numeration of pointer 31 of numeration dial plate 30 numerations to take place like this.

Air bag 10 has below been described in the glass table lid 20 of water meter and the structure between the numeration dial plate 30 emphatically, the utility model is not limited in this, purpose of design of the present utility model can be satisfied equally in other position that air bag 10 is arranged in the water meter, belongs to the category of utility model certainly.

Claims

1. an Anti-freezing water meter is characterized in that: be provided with flexible air bag (10) in the housing of water meter.

2. Anti-freezing water meter according to claim 1 is characterized in that: its smaller volume during air bag (10) pressurized, air bag (10) is arranged with reading and pointer (31) dislocation on the numeration dial plate (30).

3. Anti-freezing water meter according to claim 1 and 2 is characterized in that: described air bag (10) cross section is for circular, and it is positioned between the glass table lid (20) and numeration dial plate (30) of water meter.

4. Anti-freezing water meter according to claim 3, it is characterized in that: described air bag (10) is for circular, its diameter conforms to the diameter of numeration dial plate (30), and the diameter of the round section of air bag (10) conforms to the distance that the glass table covers between glass (20) and the numeration dial plate (30).