CN206054836U - A kind of Medical check valve - Google Patents

Abstract

The utility model discloses a kind of Medical check valve, including first valve body and the second valve body and valve block and valve element of mutual socket；First fluid passage is provided with first valve body；Second fluid passage and check cavity are provided with second valve body；Second valve body is provided with bracing frame in the non-return intracavity, and the center of support frame as described above is communicated with the non-return passage of the second fluid passage；One end of the valve element is connected in the center of support frame as described above, and the other end is in the hemisphere bodily form and is abutted with the valve block；The valve block is attached at the left side of first valve body and covers the first fluid passage.Metal device is not contained in the Medical check valve structure, it is good to the affinity of human body, it is safe；Its non-return effect is good, safe and reliable in use；The structure of the Medical check valve is simplified in addition, and detachably, low production cost, application prospect are wide.

Description

A kind of Medical check valve

Technical field

This utility model is related to medical instruments field, and in particular to a kind of Medical check valve.

Background technology

Check valve is that fluid can only export medium and cannot but flow back, be commonly called as check valve along inlet flow.Check valve is also known as only Return valve or non-return valve.

In medical instruments field, check valve should ensure to flow back, and uncomfortable using corrosion-prone materials such as metals.Mesh The check valve of front bronchial cannula on the market is generally all spring check valve, easily causes to get rusty because of stock time length Failure, or source is polluted in operation, harm is produced to human body.

Utility model content

In order to overcome the deficiencies in the prior art, the purpose of this utility model to be to provide for a kind of good to human body affinity Medical check valve.

The purpose of this utility model employs the following technical solutions realization：

A kind of Medical check valve, including the first valve body, the second valve body, valve block and valve element；First valve body and the second valve Body is socketed, and the first fluid passage through its left and right end face is provided with first valve body；

Second fluid passage and check cavity are provided with second valve body, the check cavity is connected with the first fluid passage Logical, the second fluid passage end is connected with check cavity, and the other end runs through the second valve body end face；Second valve body exists The non-return intracavity is provided with by the left inside wall of check cavity bracing frame horizontal-extending to the right, and the center of support frame as described above is provided with company Lead to the non-return passage of the second fluid passage；

One end of the valve element is connected in the center of support frame as described above, and the other end is in the hemisphere bodily form and is supported with the valve block Connect；The valve block is attached at the left side of first valve body and covers the first fluid passage.

Preferably, first valve body is provided with drainage rack in the left end of the first fluid passage.

Preferably, the distance of the drainage rack and the first valve body left side is less than support frame as described above and first valve body The distance of left side.

Preferably, the drainage rack is in cross.

Preferably, support frame as described above is made up of at least 3 ribs for being in outwards divergent shape by non-return passage.

Preferably, the ribs are provided with the salient point for protruding to the right.

Preferably, first valve body and/or the second valve body lateral wall are provided with fin.

Preferably, second valve body has dug to the right cannelure by left side.

Preferably, the outer wall of the cannelure is provided with screw thread.

Principle of the present utility model is：Fluid is entered from the right side of the first valve body, arrives at institute by first fluid passage Valve block is stated, the valve block under the punching press effect of first fluid, make in the dual support of the valve element and bracing frame by deformation to the left With under, gap is produced with the left side of first fluid passage, fluid enters check cavity along this gap, then along support frame as described above from only Return passage and flow into second fluid passage, and then flow out from the left side of the second valve body.When fluid inversely enters fashionable from the second valve body, Valve element is attached at the left side of the first fluid passage under fluid matasomatism, tightly, so as to fluid cannot be introduced into first fluid Passage, and then cannot adverse current.

Compared to existing technology, the beneficial effects of the utility model are：

The Medical check valve that this utility model is provided, does not contain metal device, safety good to the affinity of human body in its structure Property it is high；The non-return effect of the Medical check valve is good, safe and reliable in use；The structure of the Medical check valve is smart in addition Letter, detachably, low production cost, application prospect are wide.

Description of the drawings

Structural representations of the Fig. 1 for embodiment 1；

Vertical section structure schematic diagrams of the Fig. 2 for embodiment 1；

Connection diagrams of the Fig. 3 for second valve body and valve element of embodiment 1；

Wherein, each reference：1st, the first valve body；11st, first fluid passage；12nd, drainage rack；13rd, fin；2nd, the second valve Body；21st, second fluid passage；22nd, check cavity；23rd, bracing frame；24th, non-return passage；25th, ribs；26th, salient point；27th, annular Groove；28th, screw thread；3rd, valve block；4th, valve element.

Specific embodiment

Below, with reference to accompanying drawing and specific embodiment, this utility model is described further：

This utility model discloses a kind of Medical check valve, and the temporald eixis word such as "left", "right" described in the application is only Examination is interpreted as the temporald eixis to accompanying drawing；" first ", " second " etc. only show differentiation, and do not take an entrance examination and be interpreted as primary-slave relation etc..

Embodiment 1

As illustrated in fig. 1 and 2, a kind of Medical check valve, including the first valve body 1, the second valve body 2, valve block 3 and valve element 4；It is described First valve body and the socket of the second valve body, are provided with the first fluid passage 11 through its left and right end face in first valve body；

Second fluid passage 21 and check cavity 22 are provided with second valve body, the check cavity is logical with the first fluid Road is connected, and the second fluid passage end is connected with check cavity, and the other end runs through the second valve body end face；Second valve Body is provided with by the left inside wall of check cavity bracing frame 23 horizontal-extending to the right, the center of support frame as described above in the non-return intracavity It is communicated with the non-return passage 24 of the second fluid passage；

One end of the valve element is connected in the center of support frame as described above, and the other end is in the hemisphere bodily form and is supported with the valve block Connect；The valve block is attached at the left side of first valve body and covers the first fluid passage.

In the present embodiment, fluid is entered from the right side of the first valve body, arrives at the valve block, institute by first fluid passage Valve block is stated under the punching press effect of fluid, deformation to the left is under the dual support effect of the valve element and bracing frame, and first-class The left side of body passage produces gap, and fluid enters check cavity along this gap, then flows into the from non-return passage along support frame as described above Two fluid passages, and then flow out from the left side of the second valve body.When fluid inversely enters fashionable from the second valve body, valve element is made in fluid With under, the left side of the first fluid passage is tightly attached at, so as to fluid cannot be introduced into first fluid passage, and then cannot Countercurrently.

Metal device is not contained in the structure of the Medical check valve, it is good to the affinity of human body, it is safe；This is medical unidirectional The non-return effect of valve is good, safe and reliable in use；The structure of the Medical check valve is simplified in addition, detachably, is produced into This is low, and application prospect is wide.

In the present embodiment, used as further scheme, first valve body is provided with the left end of the first fluid passage Drainage rack 12.The drainage rack can play a part of buffer fluid impulsive force, to reduce loss of the fluid to valve block, improve this medical The service life of check valve.On this basis.Further, the drainage rack is less than described with the distance of the first valve body left side The distance of bracing frame and the first valve body left side, i.e., described drainage rack acts also as the effect of position limitation protection, when from reverse flow When body impacts the valve block with noticeable effort, drainage rack is played a supporting role, and prevents valve block from further deforming or even being rushed out.Institute Drainage rack is stated in cross.

In the present embodiment, as shown in Figure 3, it is preferable that support frame as described above is outwards in divergent shape by non-return passage by least 3 Ribs 25 constitute, to form the supporting surface of the outside uniform stressed of diverging in a Ge You centers.Further, the support Rib is provided with the salient point 26 for protruding to the right, and the salient point can be prevented effectively from infringement of the ribs edge to valve block, improve valve block Service life.

In the present embodiment, the valve element can also be integrally formed with bracing frame.

In the present embodiment, fin 13 is provided with as preferred scheme, first valve body and/or the second valve body lateral wall, That is the first valve body and/or the second valve body can formation be stable connects and fixes by the fin and plastic tube body etc..

In the present embodiment, used as preferred scheme, second valve body has dug to the right cannelure 27 by left side.More enter The outer wall of the one step ground cannelure is provided with screw thread 28.I.e. external body can also be connected in the cannelure, or passes through spiral shell Stricture of vagina is further fixed.

It will be apparent to those skilled in the art that technical scheme that can be as described above and design, make other various It is corresponding to change and deformation, and all these change and deformation should all belong to the protection of this utility model claim Within the scope of.

Claims (9)

1. a kind of Medical check valve, it is characterised in that including the first valve body, the second valve body, valve block and valve element；First valve body It is socketed with the second valve body, in first valve body, is provided with the first fluid passage through its left and right end face；

Second fluid passage and check cavity, the check cavity and the first fluid channel connection are provided with second valve body, The second fluid passage end is connected with check cavity, and the other end runs through the second valve body end face；Second valve body is in institute State non-return intracavity to be provided with by the left inside wall of check cavity bracing frame horizontal-extending to the right, the center of support frame as described above is communicated with The non-return passage of the second fluid passage；

One end of the valve element is connected in the center of support frame as described above, and the other end is in the hemisphere bodily form and is abutted with the valve block；Institute State valve block to be attached at the left side of first valve body and cover the first fluid passage.

2. Medical check valve according to claim 1, it is characterised in that first valve body is in the first fluid passage Left end be provided with drainage rack.

3. Medical check valve according to claim 2, it is characterised in that the drainage rack and the first valve body left side away from With a distance from less than support frame as described above and the first valve body left side.

4. Medical check valve according to claim 2, it is characterised in that the drainage rack is in cross.

5. Medical check valve according to claim 1, it is characterised in that support frame as described above is by least 3 by non-return passage Outwards the ribs in divergent shape are constituted.

6. Medical check valve according to claim 5, it is characterised in that the ribs are provided with protrude to the right convex Point.

7. Medical check valve according to claim 1, it is characterised in that on the outside of first valve body and/or the second valve body Wall is provided with fin.

8. Medical check valve according to claim 1, it is characterised in that second valve body has been dug by left side to the right Cannelure.

9. Medical check valve according to claim 8, it is characterised in that the outer wall of the cannelure is provided with screw thread.