CN104180011A

CN104180011A - Linear valve

Info

Publication number: CN104180011A
Application number: CN201410403237.4A
Authority: CN
Inventors: 张长海
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-08-12
Filing date: 2014-08-12
Publication date: 2014-12-03

Abstract

The invention provides a linear valve. The linear valve is characterized in that a valve core is cylindrical; a flowing hole of the valve is square; a flow rate limiting device and a flow rate adjusting device are arranged at the flowing hole; moreover, a seal ring adopts a square flowing hole. Since the technical scheme provided by the invention is adopted, the flowing property of the valve is enabled to be linear output; when the flow rate of a selected valve is greater than the flow rate required by the equipment, through rotating a regulating screw 6 and allowing the flow rate limiting device 7 to move forwards and backwards, a part of the square flowing hole is enabled to be shielded and the maximum flow rate output is set; moreover, the property of the linear output is unchanged.

Description

A kind of linear valve

Technical field

The present invention relates to valve field.

Background technique

Existing valve, as ball valve, butterfly valve or stopcock, is all to open soon type, is not suitable for using the occasion that needs meticulous adjusting and linear output at some.Existing valvular peak rate of flow, is a fixing numerical value substantially in addition, can not change.This can be inconsistent with the greatest requirements flow of some equipment.For those, disapprove the equipment that excess is supplied with, the slightly careless thing that just has excess supply occurs, and easily cause danger and accident, therefore, on much equipment, all must not no longer seal in a current limliting valve, be used for guaranteeing that the situation that excess is supplied with can not occur, this had both increased cost, had taken again space, but also had increased because connecting produced leakage hidden danger between valve.

Summary of the invention

In order to overcome and reduce the deficiency of above product, this patent provides a kind of linear valve with current-limiting function.It is characterized in that: spool is cylindrical.The opening of valve is square, and at opening place, is provided with the controlling device of restricting means and the flow of flow.For the setting to valve peak rate of flow.The opening of this valve sealing ring is square.

Owing to having taked such scheme, make the flow characteristics of valve become linear output, when selecting the flow of valve, while being greater than the needed flow of equipment, can reconcile screw 6 by rotation, the restricting means 7 of flow is moved forward and backward, make it block the square opening 5 of a part, limit maximum flow output.The characteristic of linear output can't change simultaneously.

The technological scheme that solves the problems of the technologies described above and adopt is:

As shown in Figure 1, first we are in existing ball valve, the spool of spheroidal for concrete scheme, be changed to columniform spool, and on columniform spool, have square opening 5, seeing Fig. 3 Fig. 4, in addition, is also square at the opening of the opening 5 with square, corresponding seal ring 3.From such scheme, can find out, two parallel relative, and square valve opening is opened from being closed to.The characteristic of this valve has been that linearity has been exported.On this basis, we are in a side of square opening 5, a flow-rate limiting device 7 is installed, in the adjusting screw 6 by flow, flow-rate limiting device 7 is regulated, can move forward and backward along square opening 5, by blocking the method for the square opening 5 of a part, reach the object of controlling uninterrupted.Owing to having taked such scheme, make this valve there is the characteristic of linear output, and the function of Flow-rate adjustment, the occasion that can meet the meticulous adjusting of some needs and linear output is used.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the present invention is further described.

Fig. 1 is first embodiment's of this patent structure principle chart.

Fig. 2 is second embodiment's of this patent structure principle chart.

Fig. 3 is the stereogram of first embodiment's spool of this patent.

Fig. 4 is the stereogram of second embodiment's spool of this patent.

Specific embodiment 1

See shown in Fig. 1 Fig. 3, in figure: the adjusting screw 6 of the seal ring 3 of valve inlet 1, valve body 2, square opening, columniform spool 4, spool opening 5, flow, the restricting means of flow 7, Fa Wu 8, valve export 9. valves are current is closed condition.Working procedure is as follows.When we need Open valve, clockwise rotate valve rod 8, when rotation is spent left and right to about 10, spool opening 5, on valve body, the seal ring 3 of square opening starts to overlap, valve conducting, fluid flows out through seal ring 3, spool opening 5, lower seal and the valve export 9 of valve inlet 1, square opening, and the angle of rotation is larger, and flow is larger.Due to spool opening 5, with the seal ring 3 of square opening be all square, be again parallel relative, cut width consistent, so the flow that valve rod 8 often rotates forward 1 valve while spending to be increased is all the same, so reached the object of linear output.In the time need to limiting the peak rate of flow of valve, the adjusting screw 6 that we can be by forward and reverse rotary current, make flow restricting means 7, move forward and backward, regulate the effective length of square opening 5, thereby realize max-flow quantitative limitation.Due to the restricting means 7 of the flow parallel before and after being, so that the output characteristics of this valve remains is linear.

Specific embodiment 2

See that Fig. 2 and Fig. 4: Fig. 4 is a hollow, the stereogram of cylindrical spool.In figure: the outlet 15 of columniform spool 4, spool opening 5, spool.In Fig. 2: the adjusting screw 6 of the seal ring 3 of valve inlet 1, valve body 2, square opening, columniform spool 4, spool opening 5, flow, the restricting means of flow 7, Fa Wu 8, valve export 9.Valve is current is closed condition.Working procedure is as follows.When we need Open valve, clockwise rotate valve rod 8, when rotation is spent left and right to about 10, spool opening 5, start to overlap with the seal ring 3 of square opening, valve conducting, fluid is through valve inlet 1, the seal ring 3 of square opening, spool opening 5, the outlet 15 (hollow) of spool, valve export 9 flows out, due to spool opening 5, seal ring 3 with square opening, all square, again parallel relative, cut width consistent, so the flow that valve rod 8 often rotates forward 1 valve while spending to be increased is all the same, therefore reached the object of linear output.In the time need to limiting the peak rate of flow of valve, the adjusting screw 6 that we can be by forward and reverse rotary current, make flow restricting means 7, move forward and backward, regulate the effective length of square opening, thereby realize max-flow quantitative limitation.Due to the restricting means 7 of the flow parallel before and after being, so that the output characteristics of this valve remains is linear.

Claims

1. a linear valve, is characterized in that: spool is cylindrical, and the opening of valve is square.

2. a kind of linear valve according to claim 1, is characterized in that: at opening place, be provided with the controlling device of restricting means and the flow of flow, for the setting to valve peak rate of flow.

3. a kind of linear valve according to claim 1 and 2, is characterized in that: the seal ring that has adopted square opening.