CN201496571U

CN201496571U - Aseptic stop valve

Info

Publication number: CN201496571U
Application number: CN200920306658XU
Authority: CN
Inventors: 唐龙
Original assignee: WENZHOU AOMI FLUID EQUIPMENT CO Ltd
Current assignee: WENZHOU AOMI FLUID EQUIPMENT CO Ltd
Priority date: 2009-07-22
Filing date: 2009-07-22
Publication date: 2010-06-02
Anticipated expiration: 2019-07-22

Abstract

The utility model relates to a stop valve, in particular to an aseptic stop valve which has the following technical scheme that the aseptic stop valve comprises a valve body, a cylinder body, a channel arranged on the valve body, and a valve core used for opening or closing the channel of the valve body, wherein the upper end of the cylinder body is provided with an executing part; a valve rod linked with the valve core is arranged between the executing part and the valve core of the valve body; a guide seat of the valve rod is arranged between the cylinder body and the valve body; a flexible sleeve is positioned between the guide seat and the valve core; and an O-shaped sealing ring is positioned between the guide seat and the flexible sleeve. By adopting the technical scheme, the aseptic stop valve with good sealing property is provided.

Description

Aseptic stop valve

Technical field

The utility model relates to a kind of stop valve, particularly a kind of aseptic stop valve.

Background technique

Being used for pharmacy, biology, cosmetics and the used stop valve of grocery trade production mainly includes valve body, cylinder body, is located at the passage on the valve body, the spool that constitutes the valve channel conducting or close, the upper end of cylinder body is provided with actuator, is provided with the valve rod with the spool interlock between the spool of actuator and valve body; It axially moved when valve rod was subjected to the actuator axial slip needs to keep stable, not then can cause seal spool incessantly to occur revealing, for this reason, in the junction of cylinder body and valve body the guide holder that plugs for valve rod is installed usually, is reached valve rod with this and move axially stable purpose.In order to guarantee the sealing between guide holder and the valve body, the hard sealing block of ring-type is set between valve body and guide holder usually, though hard sealing block can use the sealing that guarantees valve body and guide holder in the early stage, and valve rod is inserted on the guide holder to move and also can causes certain pressure to guide holder, can produce friction between guide holder and the hard sealing block, friction then can cause the wearing and tearing of hard Sealing and guide holder for a long time, and its sealing is inevitable also can be affected.

Summary of the invention

At the deficiency that prior art exists, the utility model provides a kind of aseptic stop valve of good airproof performance.

For achieving the above object, the utility model provides following technological scheme: a kind of aseptic stop valve, include valve body, cylinder body, be located at the passage on the valve body, the spool that constitutes the valve channel conducting or close, the upper end of cylinder body is provided with actuator, be provided with valve rod between the spool of actuator and valve body with the spool interlock, be provided with the guide holder of valve rod between described cylinder body and the valve body, be provided with flexible cover between guide holder and the spool, be provided with the O RunddichtringO between described guide holder and the flexible cover.

Be provided with the O RunddichtringO between guide holder and the flexible cover in this, being provided with on the one hand of O RunddichtringO can guarantee its sealing, solved the stressed Shi Buhui of pressing down of guide holder on the other hand and caused wear problems with hard thing friction, because the O RunddichtringO is flexible software and has elasticity, guide holder can not reach into friction with it.

The utility model further is set to: the connecting end of described guide holder and flexible cover is stepped substantially, the horizontal edge of its stepped end face and vertical edge are fitted with flexible cover respectively, the horizontal edge of the stepped end face of guide holder and the junction of vertical edge offer short slot, and described O RunddichtringO places in this short slot.

Stepped setting of connecting end of guide holder and flexible cover cardinal principle is to place O RunddichtringO and fixing flexible cover for convenience in this, an end of flexible cover is pressed be located between guide holder and the valve body, and rational in infrastructure, processing and installation are all comparatively convenient.

The utility model further is set to: described flexible cover extends to the end face and the extended gear block of valve body of guide holder lower end and fits, also constitutes sealing, and the junction of gear block and flexible cover is arc transition.

Extended gear block of valve body and flexible cover junction are arc transition and on the one hand can increase sealing surface in this, improve sealability, make no dead angle, this place on the other hand, are convenient to cleaning.

The utility model further is set to: the side face that described guide holder is connected with valve body is provided with the shoulder rank, and the corresponding part on valve body and these shoulder rank is provided with adaptive and constitute the spacing limited step of guide holder with these shoulder rank.

Setting of limited step is in order to prevent that spool from compressing transition in this.

Below in conjunction with accompanying drawing the utility model is further described:

Description of drawings

Fig. 1 is the utility model embodiment's a structural representation;

Fig. 2 is the I portion enlarged view of Fig. 1;

Fig. 3 is the structural representation of guide holder among the utility model embodiment.

Embodiment

As Fig. 1, Fig. 2, a kind of aseptic stop valve shown in Figure 3, include valve body 1, cylinder body 2, be located at the passage 11 on the valve body 1, the spool 3 that constitutes valve body 1 passage, 11 conductings or close, the upper end of cylinder body 2 is provided with actuator 4, be provided with valve rod 5 between the spool 3 of actuator 4 and valve body 1 with spool 3 interlocks, be provided with the guide holder 6 of valve rod 5 between described cylinder body 2 and the valve body 1, be provided with flexible cover 31 between guide holder 6 and the spool 3, be provided with O RunddichtringO 7 between described guide holder 6 and the flexible cover 31.Being provided with on the one hand of O RunddichtringO 7 can guarantee its sealing, solved the guide holder 6 stressed Shi Buhui of pressing down on the other hand and caused wear problems with hard thing friction, because O RunddichtringO 7 is for flexible software and have elasticity, guide holder 6 promptly can not reach into friction with it, thereby has guaranteed its sealability.

In the utility model embodiment, the side face that guide holder 6 is connected with valve body 1 is provided with shoulder rank 61, the corresponding part on valve body 1 and these shoulder rank 61 is provided with adaptive and constitute the spacing limited step 11 of guide holder 6 with these shoulder rank, pressure when the setting of limited step 11 can make guide holder 6 avoid valve rod 5 to move down prevents that spool 3 from compressing transition; Guide holder 6 is stepped substantially with the connecting end of flexible cover 31, the horizontal edge 62 of its stepped end face is fitted with flexible cover 31 respectively with vertical edge 63, the horizontal edge 62 of guide holder 6 stepped end faces offers short slot 64 with the junction of vertical edge 63, and O RunddichtringO 7 is installed in the short slot 64; Certainly, it also is feasible that the connecting end of guide holder 6 and flexible cover 31 is made as the plane, and after just being provided with like this, the installation of O RunddichtringO 7 then can be cumbersome, thus the utility model preferably the former; Flexible cover 31 extends to the end face and the valve body 1 extended gear block 12 of guide holder 6 lower ends and fits, also constitutes sealing, gear block 12 is arc transition with the junction of flexible cover 31, extended gear block 12 is essentially the fitting seat of guide holder 6 on the valve body 1, it then is for guide holder 6 can being pushed down flexible cover 31, playing effect fixing and sealing with this that flexible cover 31 extends to these gear block 12 places.

Claims

1. aseptic stop valve, include valve body, cylinder body, be located at the passage on the valve body, the spool that constitutes the valve channel conducting or close, the upper end of cylinder body is provided with actuator, be provided with valve rod between the spool of actuator and valve body with the spool interlock, be provided with the guide holder of valve rod between described cylinder body and the valve body, be provided with flexible cover between guide holder and the spool, it is characterized in that: be provided with the O RunddichtringO between described guide holder and the flexible cover.

2. aseptic stop valve according to claim 1, it is characterized in that: the connecting end of described guide holder and flexible cover is stepped substantially, the horizontal edge of its stepped end face and vertical edge are fitted with flexible cover respectively, the horizontal edge of the stepped end face of guide holder and the junction of vertical edge offer short slot, and described O RunddichtringO places in this short slot.

3. aseptic stop valve according to claim 1 is characterized in that: described flexible cover extends to the end face and the extended gear block of valve body of guide holder lower end and fits, also constitutes sealing, and the junction of gear block and flexible cover is arc transition.

4. aseptic stop valve according to claim 1 and 2 is characterized in that: the side face that described guide holder is connected with valve body is provided with the shoulder rank, and the corresponding part on valve body and these shoulder rank is provided with adaptive and constitute the spacing limited step of guide holder with these shoulder rank.