CN200961714Y

CN200961714Y - Core-extracting valve

Info

Publication number: CN200961714Y
Application number: CN 200620093770
Authority: CN
Inventors: 杨明忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-10-24
Filing date: 2006-10-24
Publication date: 2007-10-17
Anticipated expiration: 2016-10-24

Abstract

The utility model relates to the fluid circulation controlling device field, more particularly a knockout core stop valve, comprising an outer chamber body (2), an inner chamber body (1) equipped on a chamber (7) of the outer chamber body (2) and a spool structure (3) equipped on one end of the inner chamber body (1), wherein the inner chamber body (1) is communicated with the chamber (7) of the outer chamber body (2) through a passage (6), the spool structure (3) is movingly cooperated with the inner wall of the inner chamber body (1), the chamber (7) of the outer chamber body (2) and the other end portion of the inner chamber body (1) are respectively communicated with periphery lines, the passage (6) is a strip shaped passage, and one end of the spool structure (3) comprises a lead-screw adjusting structure (4). The utility model has a long using life, can precisely adjust the fluid discharge capacity, and has a compact structure and a good sealing performance.

Description

The valve of loosing core

Technical field

The utility model belongs to fluid flow control gear field, relates in particular to a kind of shutoff valve of loosing core.

Background technique

Stop valve of the prior art can be divided into plane, the conical surface, three kinds of seal form formation of cutter type annular sealing surface by the shape of sealing surface, utilization applies impacting force and realizes sealing on narrower sealing surface, but its annular sealing surface requirement on machining accuracy height in application, open easily repeatedly and wearing and tearing and plastic deformation occur so that flap or valve seat damage, cause interior leakage, thereby reduced the working life of valve.In addition,, use for a long time to produce the gap because of wearing and tearing owing to adopt sealing firmly between the spool of above-mentioned stop valve and valve body, and owing to can not in time regulate from the structure of itself, thereby influenced the sealability and the working life of stop valve.In addition, existing stop valve only limits to control roughly the flow of fluid basically from its general function of use.Need the flow control of the special-purpose fluid of certain precision for some, it is obviously not enough that the structural design of existing stop valve just seems.

The model utility content

The utility model is intended to overcome the deficiencies in the prior art part and a kind of long service life is provided, accurate regulated fluid flow, compact structure, the valve of loosing core of good seal performance.

The purpose of this utility model is achieved in that a kind of valve of loosing core, and comprising: outer chamber, be assigned in inner chamber body in the outer chamber chamber, place the spool mechanism in inner chamber body one end; Described inner chamber body communicates with the chamber of outer chamber through passage; The inwall of described spool mechanism and inner chamber body movingly; The chamber of described outer chamber and the another port of inner chamber body communicate with peripheral line respectively.

As a kind of preferred version, passage described in the utility model can be strip channel.

As another kind of preferred version, an end of spool described in the utility model mechanism contains the leading screw controlling mechanism.

When design, an end of leading screw controlling mechanism described in the utility model can be furnished with end cap.

For strengthening sealing function of the present utility model, the working end of spool described in the utility model mechanism is the cone structure with inner chamber body port inner wall coupling.

Because the working surface of spool of the present utility model and inner chamber body is not subjected to the influence of extraneous factor, thus its seal degree height, long service life.The existence of cone structure can make spool throttle down at an easy rate.When temperature variation made inner chamber body or spool produce dimensional changes, spool still can utilize cone structure to finish closing of valve.Can realize the stepless meticulous adjusting of flow by the regulative mode of the utility model pull spool.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is further described.But protection domain of the present utility model will be not limited only to the statement of following content.

Fig. 1 is an overall structure schematic representation of the present utility model.

Embodiment

As shown in Figure 1, a kind of valve of loosing core comprises outer chamber 2, is assigned in inner chamber body 1 in outer chamber 2 chambers 7, places the spool mechanism 3 in inner chamber body 1 one ends; Described inner chamber body 1 communicates with the chamber 7 of outer chamber 2 through passage 6; The inwall of described spool mechanism 3 and inner chamber body 1 movingly; The chamber 7 of described outer chamber 2 and the another port of inner chamber body 1 communicate with peripheral line respectively.Described passage 6 is a strip channel.One end of spool mechanism 3 contains leading screw controlling mechanism 4.End at described leading screw controlling mechanism 4 is furnished with end cap 5.The working end 8 of described spool mechanism 3 is the cone structure with inner chamber body 1 port inner wall coupling.

Flow through strip channel 6 on the inner chamber body 1 of flowing medium flows in the chamber 7 of outer chamber 2 (oppositely also can), flows to peripheral line by chamber 7 again.

Leading screw controlling mechanism 4 rotates, and drives spool mechanism 3 and moves reciprocatingly along inner chamber body 1 madial wall, and the aperture of strip channel 6 on inner chamber body 1 sidewall is changed, thereby reaches the purpose of adjusting flow.

When leading screw controlling mechanism 4 clockwise rotates, drive spool mechanism 3 and move downward along inner chamber body 1 madial wall, it is big that strip channel 6 apertures on inner chamber body 1 sidewall become, and current arrive outer chamber 2 through inner chamber body 1, and flow increases, on the contrary flow reduces.In this structure, mainly regulate flow with the mode of pull spool, the method can realize stepless meticulous adjusting flow.

Oblique angle on inner chamber body 1 madial wall and the working end of spool mechanism 38 couplings can make spool throttle down easily.When temperature variation changed inner chamber body or spool generation size, spool still can utilize oblique angle throttle down fully.

Claims

1, a kind of valve of loosing core is characterized in that, comprising: outer chamber (2), be assigned in inner chamber body (1) in outer chamber (2) chamber (7), place the spool mechanism (3) in inner chamber body (1) one end; Described inner chamber body (1) communicates with the chamber (7) of outer chamber (2) through passage (6); The inwall of described spool mechanism (3) and inner chamber body (1) movingly; The chamber (7) of described outer chamber (2) and the another port of inner chamber body (1) communicate with peripheral line respectively.

2, the valve of loosing core according to claim 1 is characterized in that: described passage (6) is a strip channel.

3, the valve of loosing core according to claim 1 and 2 is characterized in that: an end of described spool mechanism (3) contains leading screw controlling mechanism (4).

4, the valve of loosing core according to claim 3 is characterized in that: be furnished with end cap (5) at an end of described leading screw controlling mechanism (4).

5, the valve of loosing core according to claim 1 and 2 is characterized in that: the working end (8) of described spool mechanism (3) is the cone structure of mating with inner chamber body (1) port inner wall.

6, the valve of loosing core according to claim 3 is characterized in that: the working end (8) of described spool mechanism (3) is the cone structure of mating with inner chamber body (1) port inner wall.