CN2587047Y

CN2587047Y - Pipes antifreeze switching arrangement

Info

Publication number: CN2587047Y
Application number: CN 02257647
Authority: CN
Inventors: 贾建国
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-09-30
Filing date: 2002-09-30
Publication date: 2003-11-19
Anticipated expiration: 2012-09-30

Abstract

The utility model relates to an antifreezing switching device of a pipeline, which comprises a round pipe, wherein, the middle part of the round pipe is a neck-shrinking part. One end of the round pipe is a connecting end of the pipeline, and the other end is sealed with a screw plug with an opening hole; the end is also connected with a cover cup, the lower half part of a pushing shaft is positioned in the opening hole of the screw plug for the match of moving and sealing, the upper half part is sheathed with a returning spring which is positioned in the hollow cavity of the cover cup, and the upper end of the pushing shaft is penetrated through the cover cup and matches in a linking mode with an externally arranged switch of an electromagnetic valve. The neck-shrinking part firstly freezes and blocks the round pipe in the process of temperature reduction of the utility model, volume is enlarged when the water of other parts refreezes, the pushing shaft is moved outwards, and the externally arranged switch of an electromagnetic valve is triggered; thereby, the electromagnetic valve can act to close a water source and empty residual water. The utility model has the advantages of high action reliability, simple structure, and good self-controlling and antifreezing effect.

Description

The freezing prevention tubing switching device

Technical field: the utility model relates to a kind of switch controlling device of electromagnetically operated valve.

Background technology:,, can influence ordinary production, and bring sizable inconvenience to maintenance if freezing appears in supply channel during winter in the colder area of weather.Before freezing situation occurring, some pipeline needs the manual operation valve to close water source and emptying residual water, but many situations are not easy to be found rapidly and to handle, so manually operated antifreezing effect is relatively poor.Automatic antifreeze switching device is also arranged now, general electricity consumption drive test temperature, action, the reliability in varying environment is not high, and is fragile, and requirement and the condition used are more.

Summary of the invention: at the deficiencies in the prior art, it is a kind of simple and reliable for structure that the utility model provides, and can control the freezing prevention tubing switching device of electromagnetically operated valve action automatically.

The utility model comprises the pipe of a middle part receipts neck, the one end is the pipeline link, other end envelope has the plug screw of perforate, this end also is connected with cup, the perforate hydrodynamic reciprocating sealing that the latter half of push shaft is arranged in plug screw cooperates, the first half is with the cavity that back-moving spring is arranged in cup, and the electromagnetic valve switch that the upper end of this push shaft passes cup and peripheral hardware is linked.

During use, the link of pipe is communicated with supply channel, in temperature reduction process, receive the at first icing pipe that blocks of neck portion, volume increased when the water of other parts froze again in the pipe, push shaft is outwards moved, trigger the electromagnetic valve switch of peripheral hardware, make the electromagnetically operated valve action close water source and emptying residual water.Reliability height of the present utility model, simple in structure, the good freezing protection effect of automatic control.

Further specify the utility model below in conjunction with drawings and Examples.

Description of drawings: accompanying drawing is the structural representation of embodiment.

Embodiment: as shown in the figure, neck is received at the middle part of pipe 1, the one end is the pipeline link, other end envelope has the plug screw 2 of perforate, this end also is connected with cup 3, the perforate hydrodynamic reciprocating sealing that the latter half of push shaft 4 is arranged in plug screw 2 cooperates, and the first half is with the cavity that back-moving spring 5 is arranged in cup 3, and the electromagnetic valve switch that the upper end of this push shaft 4 passes cup 3 and peripheral hardware is linked.In the present embodiment, the lower end extreme position of push shaft 4 also is positioned at the perforate of plug screw 2, can further improve the reliability of push shaft 4 actions like this.If the lower end extreme position of push shaft 4 exposes the perforate of plug screw 2, may produce friction when icing, make the reaction action of push shaft 4 slack-off, influence electromagnetically operated valve and in time move.

Claims

1, a kind of freezing prevention tubing switching device, it is characterized by: the pipe (1) of neck is received at a middle part, the one end is the pipeline link, other end envelope has the plug screw (2) of perforate, this end also is connected with cup (3), the perforate hydrodynamic reciprocating sealing that the latter half of push shaft (4) is arranged in plug screw (2) cooperates, and the first half is with the cavity that back-moving spring (5) is arranged in cup (3), and the electromagnetic valve switch that the upper end of this push shaft (4) passes cup (3) and peripheral hardware is linked.

2, freezing prevention tubing switching device according to claim 1 is characterized by: the lower end extreme position of push shaft (4) is positioned at the perforate of plug screw (2).