CN209005048U - Bone Medical check valve in a kind of nothing - Google Patents

Abstract

The utility model is related to bone Medical check valve in a kind of nothing.It includes valve body, outer cover, spool and elastic element, has the groove for accommodating elastic element bottom end at the top of the upper pocket of the spool, and the inserting surface of the middle seal of the spool is back taper face；The inner wall of the middle part connection chamber is in the back taper face cooperated with the inserting surface of the middle seal of spool；To covering outside being located at, the bottom end of elastic element, which is supported, to be located in the groove of spool for the upper end of elastic element；Under sealing state, the inner wall that the inserting surface of the middle seal of spool is inserted into the middle part connection chamber forms tapered surface sealing, and the upper end of elastic element, which is supported, to be located on the lower end surface of outer cover；Under water conservancy diversion state, spool stress overcomes the elastic force of elastic element to move up, and the inserting surface of the middle seal of spool forms tapered surface with the inner wall of middle part connection chamber and separates to form water conservancy diversion gap.After adopting the above structure, the component of check valve is reduced to only there are four component, is greatly reduced cost, is simplified assembly technology.

Description

Bone Medical check valve in a kind of nothing

Technical field

The utility model medical instrument valve body technical field is not necessarily to middle bone, the few Medical check valve of component more particularly, to one kind.

Background technique

For medical check valve medically using very extensive, such as the injection being set in front of syringe is unidirectional The component of valve, existing Medical check valve is more, and assembly is more complicated, and is all made of the structure that spring is set on middle bone and comes Control valve core resets, and makes spool rotation in sealing and both states of water conservancy diversion；The component of the Medical check valve of this structure is more, at This is higher, assembles cumbersome, and how to optimize existing medical check valve keeps its component less, and assembly is simpler and save the cost, Simplified assembly technology, which becomes, technical problem to be solved.

Summary of the invention

The purpose of the utility model is not necessarily to middle bone aiming at the one kind provided in place of the deficiencies in the prior art, and component is few, portion Part is few, at low cost, the easy Medical check valve of assembly.

In order to achieve the above objectives, the technical solution of the utility model is: bone Medical check valve in a kind of nothing, includes valve body, outer Lid, spool and elastic element, valve body are in hollow structure, are divided into upper plenum in valve body and are connected to chamber, outer cover with lower cavity and middle part For hollow structure, the lower part of outer cover plugs sealing and is fixed in the upper opening of valve body, and spool is by presenting pocket and lower rod piece portion And middle seal is integrally formed, the spool is made of elastic soft material, and has at the top of the upper pocket of spool The groove of elastic element bottom end is accommodated, the inserting surface of the middle seal of the spool is back taper face；The middle part connection chamber Inner wall is in the back taper face cooperated with the inserting surface of the middle seal of spool；The upper end of elastic element is supported to be located at and be covered outside, bullet Property element bottom end support be located in the groove at the top of the upper pocket of spool；Under sealing state, the middle seal of spool is inserted Enter the inner wall formation tapered surface sealing that face is inserted into the middle part connection chamber, the lower end surface for being located at outer cover is supported in the upper end of elastic element On；Under water conservancy diversion state, spool stress overcomes the elastic force of elastic element to move up, and inserting surface and the middle part of the middle seal of spool connect The inner wall of cavity forms tapered surface and separates to form water conservancy diversion gap.

The elastic element is metal spring.

The elastic element is Elastic plastic-rubber part.

The spool is integrated the silica gel material being molded and forms, and the blind hole convenient for deformation is provided at the top of spool, should The bottom end of blind hole reaches the position of middle seal.

The baltimore groove or convex bone that the bottom face of the spool has convenient for guide functions.

The outer diameter of the outside circumference of the upper pocket of the spool is greater than the big of the inner wall back taper face of middle part connection chamber Bore dia and form horizontal annular sealing.

After adopting the above structure, the utility model is mainly carried out control valve core by using the deformation with elastic element and is moved up and down The conducting for realizing check valve, since the spool of the utility model does not have middle bone, the save the cost so that size of spool shortens, and install When, directly elastic element is placed in the groove of spool, assembly is simple, in this way, the component of check valve can be made to be reduced to only Four components, greatly reduce cost, simplify assembly technology.

Detailed description of the invention

Fig. 1 is the sealing state the schematic diagram of the section structure of the utility model embodiment；

Fig. 2 is the opening state the schematic diagram of the section structure of the utility model embodiment；

Fig. 3 is the decomposition texture schematic diagram of the utility model embodiment；

Fig. 4 is the side schematic view of the utility model embodiment；

Fig. 5 is the Elastic plastic-rubber part structural schematic diagram of the utility model embodiment.

Specific embodiment

As shown in Figs. 1-5, bone Medical check valve in a kind of nothing includes valve body 10, outer cover 20, spool 30 and elastic element 40, valve body 10 is in hollow structure, and upper plenum 11 is divided into valve body 10 and is connected to chamber 13 with lower cavity 12 and middle part, during outer cover 20 is Hollow structure, the lower part of outer cover 20 plug sealing and are fixed in the upper opening of valve body 10, and spool 30 is by presenting pocket 31 and lower beam Part portion 32 and middle seal 33 are integrally formed, and the spool 30 is made of elastic soft material, and the fovea superior of spool 30 There is the groove 34 for accommodating 40 bottom end of elastic element, the inserting surface of the middle seal 33 of the spool 30 is back taper at the top of cavity portion 31 Shape face；The inner wall of the middle part connection chamber 13 is in the back taper face cooperated with the inserting surface of the middle seal 33 of spool 30；Bullet Property element 40 upper end support and be located on outer cover 20, the recessed of 31 top of upper pocket for being located at spool 30 is supported in the bottom end of elastic element 40 In slot 34；Under sealing state, the inserting surface of the middle seal 33 of spool 30 is inserted into the inner wall shape of the middle part connection chamber 13 Tapered face sealing, the upper end of elastic element 40, which is supported, to be located on the lower end surface of outer cover 20；Under water conservancy diversion state, 30 stress of spool overcomes The elastic force of elastic element 40 moves up, and the inner wall that the inserting surface of the middle seal 33 of spool 30 is connected to chamber 13 with middle part forms taper Face separates to form water conservancy diversion gap.

The elastic element 40 is metal spring.

Or as shown in figure 5, the elastic element 40 is Elastic plastic-rubber part.

The baltimore groove or convex bone 35 that the bottom face of the spool 30 has convenient for guide functions.

The outer diameter of the outside circumference of the upper pocket 31 of the spool 30 is greater than the inner wall back taper of middle part connection chamber 13 The diameter macropores in face and form horizontal annular sealing 36.

In use, check valve can be fitted close with syringe when work, the inner wall and syringe outer wall tight fit of check valve Sealing is formed, the flow-guiding mouth circulated gases or medical fluid can be passed through between bottom end and the edge.

When with pressure gas or liquid flow into from the lower cavity 12 of valve body 10, pressure acts on spool 30, spool 30 have the trend that moves upwards, and spool 30 overcomes the generation deformation of 40 deformation pressure of elastic element to compress upwards, makes in spool 30 Between the inner wall of sealing 33 and middle part connection chamber 13 separate；Fluid connects from the inserting surface of the middle seal 33 of spool 30 with middle part The inner wall of cavity 13 forms tapered surface and separates the water conservancy diversion gap to be formed entrance, then the hollow rear discharge by outer cover 20；When fluid pressure When power is less than 40 deformation pressure of elastic element, spool 30 restores deformation and restores initial sealing state again.

After adopting the above structure, the utility model mainly is come in control valve core to move down by using the deformation with elastic element 40 The dynamic conducting for realizing check valve, since the spool 30 of the utility model is without middle bone, the save the cost so that size of spool 30 shortens, and When installation, directly elastic element 40 is placed in the groove 34 of spool 30, assembly is simple, in this way, can make the component of check valve It is reduced to only there are four component, greatly reduces cost, simplify assembly technology.

Certainly, the utility model can also have other numerous embodiments, without departing substantially from the spirit of the present invention and essence In the case of, those skilled in the art work as can make various corresponding changes and modifications, but these phases according to utility model The change and modification answered all should belong to the protection scope of utility model the attached claims.

Claims (6)

1. bone Medical check valve in a kind of nothing, includes valve body, outer cover, spool and elastic element, valve body is in hollow structure, valve body Inside it is divided into upper plenum and is connected to chamber with lower cavity and middle part, outer cover is hollow structure, and the lower part of outer cover plugs sealing and is fixed on valve In the upper opening of body, it is characterised in that: spool is integrally formed by presenting pocket and lower rod piece portion and middle seal, described Spool is made of elastic soft material, and has the groove for accommodating elastic element bottom end, the valve at the top of the upper pocket of spool The inserting surface of the middle seal of core is back taper face；The inner wall of the middle part connection chamber is in slotting with the middle seal of spool Enter the back taper face of face cooperation；To covering outside being located at, the fovea superior for being located at spool is supported in the bottom end of elastic element for the upper end of elastic element In groove at the top of cavity portion；Under sealing state, the inserting surface of the middle seal of spool is inserted into the interior of the middle part connection chamber Wall forms tapered surface sealing, and the upper end of elastic element, which is supported, to be located on the lower end surface of outer cover；Under water conservancy diversion state, spool stress overcomes bullet Property element elastic force move up, the inserting surface of the middle seal of spool forms tapered surface with the inner wall of middle part connection chamber and separates to be formed Water conservancy diversion gap.

2. bone Medical check valve in a kind of nothing according to claim 1, it is characterised in that: the elastic element is metal elastic Spring.

3. bone Medical check valve in a kind of nothing according to claim 1, it is characterised in that: the elastic element is elasticity modeling Glue part.

4. bone Medical check valve in a kind of -3 described in any item nothings according to claim 1, it is characterised in that: the spool is Silica gel material made of integrated injection molding forms, and the blind hole convenient for deformation is provided at the top of spool, and the bottom end of the blind hole reaches intermediate The position of sealing.

5. bone Medical check valve in a kind of nothing according to claim 4, it is characterised in that: the bottom face of the spool is led The baltimore groove or convex bone of stream effect.

6. bone Medical check valve in a kind of nothing according to claim 5, it is characterised in that: the upper pocket of the spool The outer diameter of outside circumference is greater than the diameter macropores in the inner wall back taper face of middle part connection chamber and forms horizontal annular sealing.