CN2413116Y

CN2413116Y - Temp-control valve

Info

Publication number: CN2413116Y
Application number: CN 00222097
Authority: CN
Inventors: 龚跃华; 李韬鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-01-13
Filing date: 2000-01-13
Publication date: 2001-01-03
Anticipated expiration: 2010-01-13

Abstract

The utility model relates to a temp-control valve. The utility model belongs to a ball valve of the fluid in a pipeline, particularly the temp-control valve. The valve is on the base that the conventional temp-control valve which is composed of a valve seat, a valve core and a control handle, the end part of the control handle is provided with a spring, the middle part of the control handle is provided with a tappet with a piston, the piston is arranged in a cylinder body which is matched with the piston, and the inner of the cylinder body is provided with mercury, the cylinder body and one end of the spring are fixed to a mounting seat. The valve has the advantages of simple structure, easy installation, easy adjustment, and low cost; the utility model can automatically open or close at 0 DEG, and prevent the water equipment breakage from freezing.

Description

A kind of heat-operated valve

The utility model belongs to the ball valve of pipeline fluid, particularly heat-operated valve.

Traditional ball core valve is simple in structure, and cost is low, adopts for many years in liquid conducting pipes, but need expose at outdoor cold zone at pipeline, has inapplicable or awkward problem.As the solar water heater on the roof is exactly an example, when having arrived icing temperature, need climb to the water inlet in the roof cut-out pipe, and the water in the discharge piping, in order to avoid the bursting by freezing pipeline, this operation is than trouble.For addressing this problem, can see the technological means of coming control electromagnetic valve with heat responsive element at patent documentation and some field, but this covering device complex structure, cost is higher, inconvenient maintenance.

The purpose of this utility model provides a kind of heat-operated valve, it is simple in structure, install easily, easily regulate cost low, safe in utilization, can when zero degree, open automatically or close, prevent that watering equipment is by bursting by freezing.

Implementation of the present utility model is: on traditional ball valve basis of being made up of valve seat, spool and control handle, spring is equipped with in end at control handle, the tappet of one band piston is housed at the control handle middle part, piston is contained in the cylinder body that is mated, mercury is housed in the cylinder body, and an end of cylinder body and spring all is fixed on the fitting seat.Utilize mercury in cylinder body the power of expanding with heat and contract with cold and the active force of spring, control handle is rotated, thereby closes or Open valve.Fitting seat is contained in opposite diverse location fixedly the time, and this valve can become freezing point self acting stop valve or the automatic open valve of freezing point.

Below, the specific embodiment of the present utility model according to Figure of description provides is further described its structure.

Fig. 1 is by the structural representation of model utility.

Referring to accompanying drawing 1, the ball-valve structure that this valve still adopts traditional valve seat 1, spool (not drawing) and control handle 2 to form, but done less improvement.In the end of control handle 2 draught spring 4 is housed, at control handle 2 middle parts, be between valve core shaft 8 and spring 4 mounting points, the tappet 3 of one band piston is housed, piston is contained in the cylinder body 5 that is mated, the bigger liquid of dress expansion coefficient in the cylinder body 5, as mercury 7, an end of cylinder body 5 and spring 4 all is fixed on the fitting seat 6.This valve as shown in the figure is the automatic open valve of freezing point, and when temperature dropped to freezing temperature, mercury 7 shrank, and spring 4 pulls down control handle 2, valve opening; The temperature rises when above freezing, and mercury expands, and tappet 3 will push away on the control handle, valve closing.If when fitting seat 6 was contained in the diagram opposite location, then the action of valve was opposite with the above, becomes the freezing point self acting stop valve.At the pre-installed freezing point self acting stop valve of the water supply tank of solar water heater, simultaneously pick out the automatic open valve of a freezing point at the low liquid level place of pipeline of thermal-arrest plate, with regard to can be reliable and low price ground solve the problem of pipeline spalling in winter.

From technique scheme of the present utility model, the utility model is simple in structure, installation and easy to manufacture, easy to adjust, cost is low, and is safe in utilization, is not easy to damage under the environment of exposing to the weather, can open automatically when zero degree automatically or close, the watering equipment that prevents environment use in the open is by bursting by freezing.

Claims

1, a kind of heat-operated valve, form by valve seat, spool and control handle, it is characterized in that spring being housed in the end of control handle, the tappet of one band piston is housed at the control handle middle part, piston is contained in the cylinder body that is mated, mercury is housed in the cylinder body, and an end of cylinder body and spring all is fixed on the fitting seat.