CN2645047Y

CN2645047Y - Plastic shell of water meter

Info

Publication number: CN2645047Y
Application number: CN 03270482
Authority: CN
Inventors: 周仁荣
Original assignee: Hangzhou Longxi Intelligent Equipment Co ltd
Current assignee: Hangzhou Longxi Intelligent Equipment Co ltd
Priority date: 2003-09-28
Filing date: 2003-09-28
Publication date: 2004-09-29
Anticipated expiration: 2013-09-28

Abstract

A shell structure of a water meter, in particular to a structure of a plastic shell. It contains the inner chamber that takes water inlet, water outlet and interior area ability installation main table subassembly to and enable water from the bottom chamber of water inlet flow direction main table subassembly, characterized by: the split structure comprises a main body with a water inlet, a water outlet and an inner cavity, a metal sleeve inserted in the inner cavity, a chassis which can be hot-melted and attached to the main body to form a bottom cavity, a plastic lining which is hot-melted and attached to the inner wall of the chassis, and a group of sealing rings which are respectively arranged between the main body and the metal sleeve and between the main body and the plastic lining. The utility model provides a water meter case of current cast iron easily rust and scale deposit and make quality of water polluted and go out little scheduling problem. The plastic shell of the water meter of the utility model has smooth surface, no scale and no corrosion, thereby keeping the cleanness and sanitation of water, being beneficial to the health of people and ensuring smooth water flow.

Description

The plastic casing of water meter

Technical field

The utility model relates to a kind of what water meter, especially its plastic casing of water consumption that be used to measure.

Background technology

Existing water meter, as Chinese patent 01238989.7 " domestic meter that contains thin flow measurement compensation meter ", its shell structure can be seen from Fig. 2-Fig. 7, it is by the cast iron monoblock cast, have into water interface 1, water outlet interface 2 on the housing, interior band is installed the inner chamber 3 of master meter assembly and the left chamber 3 ' that the compensation meter assembly is installed, and can make water flow to the chamber, the end 4 of compensation meter assembly and master meter assembly from the interface of intaking.Its shortcoming is: the cast iron inwall is in use because of the corrosion polluted water, and because of the easily fouling of its rough surface, makes water stream channel narrow down, attenuate, so current are obstructed.

Summary of the invention

The utility model is to overcome the shortcoming that exists in the above-mentioned prior art, provides a kind of and can guarantee that water quality is not contaminated, and the plastic casing of the unobstructed water meter of water outlet, and it is had can make and characteristics such as reliable operation, long service life.

The plastic casing of the utility model water meter, it contains and has into water interface, water outlet interface and interior band can be installed the inner chamber of master meter assembly, and can make water flow to the chamber, the end of master meter assembly from the water inlet interface, be characterized in: it has the split structural member of one group of housing that can be injected into a whole successively, this split structural member contains the main body of bringing water interface and water outlet interface and inner chamber into, the metallic sheath of intercalation in inner chamber, can fit to form the chassis in chamber, the end with the main body hot melt, hot melt is fitted in the plastic inner lining on the inwall of chassis, and one group is arranged on respectively between main body and the metallic sheath, O-ring seal between main body and the plastic inner lining.Wherein metallic sheath is copper sheathing or the aluminium cover that handle through anti-corrosion on the surface; The preferably resistant to elevated temperatures rubber ring of O-ring seal.

The beneficial effects of the utility model are: 1) internal face of the utility model housing is metal covering or the plastics wall of handling through anti-corrosion, it is smooth, cleaning, smooth and not corrosion, therefore polluted water not in long-term use, the surface is also less scaling, so can guarantee that quality of water supply still meets the hygienic standard of environmental protection, and its water outlet can continue unobstructed; 2) the utility model housing is rational in infrastructure, especially its split structural member is because of all having O-ring seal on each joint face, so after injection mo(u)lding successively, still guarantee the tightness on the joint face, so the utility model housing has still kept tight reliable, the characteristics of not having leakage of monoblock type water meter case; 3) the utility model can make its interior master meter assembly that is threaded can effectively keep out the impact of the water supply of band pressure by a metallic sheath of threaded section with the chimeric one of main body, guarantees the reliability of water meter work, and long service life.

Description of drawings

Fig. 1 is the main cut-open view of the plastic casing of the utility model water meter;

Fig. 2-Fig. 7 is the structural drawing of existing cast housing, and wherein Fig. 2, Fig. 3, Fig. 4 are respectively its main cut-open view, left view and vertical views; Fig. 5-Fig. 6 is respectively A-A, the B-B cut-open view among Fig. 4; Fig. 7 is the C-C cut-open view among Fig. 2;

Fig. 8-Fig. 9 is the structural drawing of the plastic casing of the another kind of water meter of the utility model, and wherein Fig. 8 is that its main cut-open view, Fig. 9 are the D-D cut-open views among Fig. 8.

Embodiment

The plastic casing of embodiment 1. present embodiment water meters, its structure can see from Fig. 8 and Fig. 9, and it has into water interface 1, water outlet interface 2 and the inner chamber 3 of master meter assembly is installed, can be made water flow to the chamber, the end 4 of inner chamber 3 from water inlet interface 1; Whole housing is made up of one group of split structural member that can be injected into a whole successively, this split structural member comprises that one has the main body 6 of bringing water interface 1, water outlet interface 2 and inner chamber 3 on it, the metallic sheath 5 of the threaded interface in the inner chamber 3 of sleeve on main body, can fit with the chassis 9 that forms chamber, the end 4, can fuse the plastic inner lining 8 on the inwall of chassis with main body 6 injection moulding hot melts, and main body 6 with the fusion face of metallic sheath 5, and the fusion face of plastic inner lining 8 on the O-ring seal 7 that has respectively.

During the plastic casing of present embodiment water meter, be successively that each split structural member is affixed in aggregates with the method for injection moulding, that is earlier on metallic sheath 5, put two O-ring seals 7, and put it into then in the mould of main body 6, obtain semi-manufacture by injection moulding with metallic sheath 5 and main body 6; At this half-finished bottom chimeric plastic inner lining 8, and between plastic inner lining 8 and main body 6, put into an O-ring seal 7, after this put it into again in the mould on chassis, obtain the plastic casing of the water meter of present embodiment through the quadric injection mould hot melt molding thereafter.

The material of metallic sheath 5 in the present embodiment is smooth surface and copper or the aluminium handled through surperficial anti-corrosion; O-ring seal 7 is resistant to elevated temperatures rubber rings.

Above-mentioned metallic sheath 5 is after injection moulding, and its perisporium embeds in the sidewall of main body inner chamber, so just can upwards not gone out by press water with the master meter assembly that is threaded in the metallic sheath, thus guaranteed the safe reliability in the water meter use, and prolong its serviceable life.The O-ring seal 7 that has on quadric injection mould hot melt assembly, each joint face of split structural member is adopted on its chassis, all can guarantee the tightness on the joint face so that the present embodiment housing of forming by the split structural member the same with existing whole housing tight reliable, do not have and leak.

The plastic casing of embodiment 2. present embodiment water meters, its structure can be seen from Fig. 1, it is a kind of and the matching used plastic casing of Chinese patent 01238989.7 " domestic meter that contains thin flow measurement compensation meter ", it and 1 difference of embodiment, only be in the housing except there being one to be used to install the inner chamber 3 of master meter assembly, also has a left chamber 3 ' that is used to install the compensation meter assembly, but since volume little, diameter is little, can do not rushed out when so the compensation meter assembly is worked, so be not with metallic sheath in the left chamber by water in left chamber.Therefore, the split structural member of present embodiment housing comprises that one has the main body 6 of bringing water interface 1, water outlet interface 2, inner chamber 3, left chamber 3 ' on it, the metallic sheath 5 of the threaded interface in the inner chamber 3 of sleeve on main body, can fit with the main body hot melt and be fitted in plastic inner lining 8 on the inwall of chassis with chassis 9, the hot melt that forms chamber, the end 4, and the O-ring seal 7 on one group of binding face that is arranged on main body 6 and metallic sheath 5, on the binding face of main body and plastic inner lining 8.The process that each assembly in the present embodiment is injected into a whole successively is identical at plastic casing with embodiment 1.

Claims

1, a kind of plastic casing of water meter, it contains and brings water interface (1) into, water outlet interface (2) and interior band can be installed the inner chamber (3) of master meter assembly, and can make water flow to the chamber, the end (4) of master meter assembly from the water inlet interface, it is characterized in that: it has the split structural member of one group of housing that can be injected into a whole successively, this split structural member contains the main body (6) of bringing water interface and water outlet interface and inner chamber into, the metallic sheath (5) of intercalation in inner chamber, can fit to form the chassis (9) in chamber, the end with the main body hot melt, hot melt is fitted in the plastic inner lining (8) on the inwall of chassis, and one group is arranged on respectively between main body (6) and the metallic sheath (5), O-ring seal (7) between main body (6) and the plastic inner lining (8).

2, the plastic casing of water meter according to claim 1 is characterized in that: said main body (6) also has left chamber (3 ').

3, the plastic casing of water meter according to claim 1 and 2 is characterized in that: said metallic sheath (5) is copper sheathing or the aluminium cover that handle through anti-corrosion on the surface.

4, the plastic casing of water meter according to claim 1 and 2 is characterized in that: said O-ring seal (7) is resistant to elevated temperatures rubber ring.

5, the plastic casing of water meter according to claim 3 is characterized in that: said O-ring seal (7) is resistant to elevated temperatures rubber ring.