CN2199383Y

CN2199383Y - Controlled safety valve

Info

Publication number: CN2199383Y
Application number: CN 94242510
Authority: CN
Inventors: 赵军; 朱宁远
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-08-27
Filing date: 1994-08-27
Publication date: 1995-05-31
Anticipated expiration: 2004-08-27

Abstract

The utility model discloses a controlled relief valve, including the valve body, the disk seat is equipped with on the valve body, is equipped with case and lower case in the disk seat, and the diaphragm is equipped with to the lower case lower extreme, and the diaphragm is the inlet and outlet channel of valve body lower extreme under, and the opening that crosses, upper and lower case have one between the case to take the inclined plane slider that promotes by disk seat external control switch, and the elastic connection structure is equipped with between upper and lower case, and the upper case outside is opened has the breach that supplies to be gone into by the corresponding controlled relay dop card that the opening stretched into of disk seat, goes up the case upper end and. The advantages are that: reliable opening and closing, difficult generation of false action and reasonable structure.

Description

Controllable safety valve

The utility model relates to the valve in engineering element or the parts, is a kind of barrier film shut-off means, the specifically valve of tep reel shape barrier film; A kind of in other words conj.or perhaps safety valve that activates by extraneous circumstance.

Present existing controlled security valve in particular for the safety valve of aspects such as combustion gas, only cuts out by the control of relay dop usually, and structure is also comparatively complicated, and fragile, misoperation is many, and functional reliability is poor.

The purpose of this utility model provides a kind of opening and closing reliable, is difficult for producing the controlled security valve of misoperation.

Technical solution of the present utility model is: a kind of controlled security valve, it has adopted the design that is different from prior art: comprise valve body, valve seat is housed on the valve body, upper valve core and lower valve core are housed in the valve seat, diaphragm is equipped with in the lower valve core lower end, diaphragm is down the inlet, outlet passage of the valve body lower end opening that crosses, upper and lower valve core chamber has a band inclined plane slide block of being controlled the switch promotion by valve seat outward, upper and lower valve core chamber is equipped with elastic connection structure, the upper valve core outside has the breach that snapped in by the controlled relay dop that stretches into for by the corresponding opening of valve seat, and stage clip is equipped with in the upper valve core upper end.

Upper valve core in the utility model and the elastic connection structure between lower valve core adopt the screw that hangs tight that is loaded on lower valve core and the upper valve core opposing side, and are loaded on the extension spring that hangs tight between screw and upper valve core.Certainly, above-mentioned linkage structure also can adopt other suitable construction forms.

The breach that the upper valve core outside in the utility model has has two, and one is to open to use breach, and another uses breach for closing.Certainly, also can adopt other suitable breach structural type.

Band inclined plane slide block in the utility model is flush-mounted in the rectangle hole slot at middle part between the upper and lower spool, its front end stretches out outside the valve seat and is supported on the support that is connected as a single entity with valve seat, between support and slip front, spring is housed, the slide block rear end contacts with the front end of a pressing control switch, and pressing control switch also is loaded on another support that is connected as a single entity with valve seat.Certainly, slide block also can adopt other suitable construction, and adopts other suitable installation forms.

The utility model has the advantages that: rational in infrastructure, opening and closing reliable, not fragile, also be difficult for producing misoperation.

The utility model is described in further detail below in conjunction with drawings and Examples:

Fig. 1 is the structural representation of a kind of controlled security valve of the present utility model.

Fig. 2 is the A-A sectional view of Fig. 1.

Fig. 1, Fig. 2 have described an embodiment of the present utility model.Comprising a valve body 1, valve body 1 bottom is a gas-entered passageway 3, outlet passageway 4, valve seat 2 is installed on valve body 1, at gas-entered passageway 3, outlet passageway 4 is positioned at the opening intersection of valve body 1, a diaphragm 7 is housed, diaphragm 7 upper ends are contained in lower valve core 6 lower ends that are positioned at valve seat 2, in the valve seat 2 on the lower valve core 6 upper valve core 5 is housed also, by adjustable gland nut 11 stage clip 10 is housed between upper valve core 5 upper ends and valve seat 2 inner tops, upper valve core 5,6 of lower valve cores also are equipped with and hang tight screw 8 and extension spring 9, upper valve core 5, the middle part has involutory slide block caulking groove 13 between the lower valve core 6,21, wherein be coated with slide block 14, also have relay dop location notch hole 19 at upper valve core 5 sides, 20, for the usefulness that is subjected to controlled relay dop 12 location that stretches into by corresponding opening on the valve seat 2.Valve seat 2 bottoms have fore poppet 17, back poppet 18, and the front end of slide block 14 is threaded onto on the fore poppet 17, and spring 15 is housed, and slide block 14 rear ends contact with the front end of a pressing control switch 16, and control switch 16 is loaded on the back poppet 18.

The working principle of the foregoing description is: during original state, whole valve is in closed condition, and this moment, lower valve core 6 moved down with upper valve core 5 because the effect of stage clip 10, and compressing diaphragm 7 is sealed inlet, outlet passage 3,4 opening that crosses.When the need open valve, as long as will push away before the switch 16, even overcoming on stage clip 10 resistances, move slide block 14 upper inclined surface upper valve cores 5, at this moment, if the also controlled startup of relay, relay dop 12 promptly falls into slotted eye 19, upper valve core 5 can not fallen again, when slide block 14 after resetting under the effect of spring 15, lower valve core 6 moves up in the breach of slide block bottom on promptly under the effect of extension spring 9, diaphragm 7 is decontroled the sealing to pipeline immediately, and valve is opened.Because lower valve core is stuck in the slide block down gap, thereby this moment, slide block can't promote forward again, thus can prevent effectively valve by the people for causing the valve can not closed condition, thereby guarantee that valve is in normal state of a control all the time.

When externally environmental factor or artificial control down during cut-off valve of needs, the then actuating of relay, relay dop 12 retractions, upper valve core 5 moves down under stage clip 10 effects, and makes lower valve core 6 move down jointly, and diaphragm 7 is sealed pipeline again under lower valve core 6 compressings.Valve cuts out smoothly.

Claims

1, a kind of controlled security valve, it is characterized in that: comprise valve body, valve seat is housed on the valve body, upper valve core and lower valve core are housed in the valve seat, and diaphragm is equipped with in the lower valve core lower end, and diaphragm is down the inlet, outlet passage of the valve body lower end opening that crosses, upper and lower valve core chamber has a band inclined plane slide block of being controlled the switch promotion by valve seat outward, upper and lower valve core chamber is equipped with elastic connection structure, and the upper valve core outside has the breach that snapped in by the controlled relay dop that stretches into for by the corresponding opening of valve seat, and stage clip is equipped with in the upper valve core upper end.

2, controlled security valve according to claim 1 is characterized in that: the elastic connection structure between upper valve core and lower valve core adopts the screw that hangs tight that is loaded on lower valve core and the upper valve core opposing side, and is loaded on the extension spring that hangs tight between screw and upper valve core.

3, controlled security valve according to claim 1 and 2 is characterized in that: the breach that the upper valve core outside has has two, and one is to open to use breach, and another uses breach for closing.

4, controlled security valve according to claim 1 and 2, it is characterized in that: the band inclined plane slide block is flush-mounted in the rectangle hole slot at middle part between the upper and lower spool, its front end stretches out outside the valve seat and is supported on the support that is connected as a single entity with valve seat, between support and slip front, spring is housed, the slide block rear end contacts with the front end of a pressing control switch, and pressing control switch also is loaded on another support that is connected as a single entity with valve seat.