CN209026261U - A kind of no inner cover Medical check valve - Google Patents
A kind of no inner cover Medical check valve Download PDFInfo
- Publication number
- CN209026261U CN209026261U CN201821476246.6U CN201821476246U CN209026261U CN 209026261 U CN209026261 U CN 209026261U CN 201821476246 U CN201821476246 U CN 201821476246U CN 209026261 U CN209026261 U CN 209026261U
- Authority
- CN
- China
- Prior art keywords
- sealing shroud
- spool
- sealing
- check valve
- outer cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model is related to a kind of no inner cover Medical check valve, only by valve body, outer cover, spring and core assembly composition, valve body is in hollow structure, it is divided into upper plenum in valve body and is connected to chamber with lower cavity and middle part, outer cover is hollow structure, the lower part of outer cover plugs sealing and is fixed in the upper opening of valve body, core assembly is made of spool and sealing shroud, spool is in upper pole part and lower bar portion and middle part space collar, the diameter of lower bar portion is greater than the diameter of upper pole part, spring is set in upper pole part between outer cover and middle part space collar, hollow reverse taper is made by elastic soft material in the sealing shroud, sealing shroud is set in lower bar portion and is located at the lower section of middle part space collar, there is the back taper face that sealing cooperation is inserted into sealing shroud in the middle part of the inner wall of the middle part connection chamber.After adopting the above structure, the utility model has the characteristics that component is few, assembles simply, using reliable, at low cost.
Description
Technical field
The utility model medical instrument valve body technical field is not necessarily to inner cover more particularly, to one kind, and component is few, at low cost medical
Check valve.
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, assembles more complicated, is usually combined with inner cover in the bottom of spool, inner cover with
The equipment such as external syringe are cooperated, just in case the inner cover of Medical check valve falls off or do not assemble, lack the list of inner cover
Work can not be normally moved up to valve core, there are medical-risks.In order to prevent such medical-risk, simplifying assembly technology and solve
Such technical problem.
Summary of the invention
The purpose of the utility model is not necessarily to inner cover aiming at the one kind provided in place of the deficiencies in the prior art, component is few, at
This low Medical check valve.
In order to achieve the above objectives, the technical solution of the utility model is: a kind of no inner cover Medical check valve, only by valve body, outer cover,
Spring and core assembly composition, 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 core assembly is made of spool and sealing shroud,
For spool in upper pole part and lower bar portion and middle part space collar, the diameter of lower bar portion is greater than the diameter of upper pole part, and spring is set in
For bar portion between outer cover and middle part space collar, hollow vertebral body, sealing shroud set is made by elastic soft material in the sealing shroud
It is located at lower bar portion and is located at the lower section of middle part space collar, have in the middle part of the inner wall of the middle part connection chamber and match with sealing shroud insertion sealing
The back taper face of conjunction.
Sealing shroud tubular construction made of elastic silica gel material forms through-hole, sealing shroud in the middle part of sealing shroud
Outer surface be shaped to convenient for sealing inverted cone surface.
The spool is made of rigid plastics.
If being provided with arterial highway diversion trench along axial direction on the shaft of the upper pole part of the spool.
The cross recess of protrusion or a word list slot of protrusion are provided on the bottom surface of the lower bar portion of the spool.
After adopting the above structure, the utility model is mainly by improving spool, on the one hand by the way that traditional unification is straight
The spool of diameter is improved to the valve core structure of lower thick upper thin, and the thick part in lower part can be carried out with external medical equipment, such as syringe
Docking makes its docking intensity and reliability, stationarity be guaranteed, and the thin bar portion in top is convenient for water conservancy diversion；It on the other hand, will be traditional
Single valve hole part be revised as two component combinations of spool and sealing-plug and form, by using hard material production spool and
The injection molding of traditional soft ebonite is substituted using the sealing-plug socket combination of elastic soft material production, is reduced technique, is reduced cost, because
This, the utility model has the characteristics that component is few, assembles simply, using reliable, at low cost.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure under the sealing state of the utility model embodiment
Fig. 2 is the schematic diagram of the section structure under the opening state of the utility model embodiment；
Fig. 3 is the schematic perspective view of the spool of the utility model embodiment；
Fig. 4 is the dimensional decomposition structure diagram of the spool of the utility model embodiment.
Specific embodiment
As shown in Figs 1-4, the embodiment of the utility model is: a kind of no inner cover Medical check valve, only by valve body 10, outer cover 20,
Spring 30 and core assembly 40 form, and valve body 10 is in hollow structure, be divided into valve body 10 upper plenum 11 and lower cavity 12 and in
Portion is connected to chamber 13, and outer cover 20 is hollow structure, and the lower part of outer cover 20 plugs sealing and is fixed in the upper opening of valve body 10, spool group
Part 40 is made of spool 41 and sealing shroud 42, and spool 41 is in upper pole part 411 and lower bar portion 412 and middle part space collar 413, lower beam
The diameter in portion 412 is greater than the diameter of upper pole part 411, and spring 30 is set in upper pole part 411 and is located at outer cover 20 and middle part space collar 413
Between,
The tubular construction made of elastic silica gel material of sealing shroud 42, the middle part of sealing shroud 42 forms through-hole, close
The inverted cone surface that the outer surface of big envelope 42 is shaped to convenient for sealing.
Alternatively, hollow reverse taper is made by elastic soft material in the sealing shroud 42, sealing shroud 42 is set in lower bar portion 412
And it is located at the lower section of middle part space collar 413, have in the middle part of the inner wall of the middle part connection chamber 13 and is inserted into sealing cooperation with sealing shroud 42
Back taper face.
The spool 41 is made of rigid plastics.
If being provided with arterial highway diversion trench 411a along axial direction on the shaft of the upper pole part 411 of the spool 41.
The cross recess 412a of protrusion or a word list slot of protrusion are provided on the bottom surface of the lower bar portion 412 of the spool 41.
It is fitted close in use, being provided with raised cross recess 412a and syringe on the bottom surface of spool 41, syringe is upward
It pushes away, overcomes 30 self-deformation pressure of spring to generate deformation compression, the sealing ring 42 on spool 41 is made to be connected to the interior of chamber 13 with middle part
Wall separates and opens valve, while the inner wall of check valve and syringe outer wall tight fit are formed and sealed, between bottom end and the edge
The flow-guiding mouth circulated gases or liquid can be passed through.
When with pressure gas or liquid flow into from the lower cavity of valve body 10, fluid enters from seal clearance, passes through
10 upper pole part 411 of spool and the hollow gap of outer cover 20 export, and if the arterial highway water conservancy diversion on the shaft of the upper pole part 411 of spool 41
Slot 411a can make water conservancy diversion more smooth；After removing pressure, under the elastic recovery of spring 30 itself, spool 41 resets to initial close
Position is sealed, sealing state is restored.
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 (5)
1. a kind of no inner cover Medical check valve, is only made of valve body, outer cover, spring and core assembly, valve body is in hollow structure, valve
Being divided into upper plenum is connected to chamber with lower cavity and middle part in vivo, and outer cover is hollow structure, and the lower part of outer cover plugs sealing and is fixed on
In the upper opening of valve body, it is characterised in that: core assembly is made of spool and sealing shroud, spool in upper pole part and lower bar portion and
Middle part space collar, the diameter of lower bar portion are greater than the diameter of upper pole part, and spring is set in upper pole part and is located at outer cover and middle part space collar
Between,
Hollow reverse taper is made by elastic soft material in the sealing shroud, and sealing shroud is set in lower bar portion and is located at middle part space collar
Lower section, have the back taper face that sealing cooperation is inserted into sealing shroud in the middle part of the inner wall of middle part connection chamber.
2. a kind of no inner cover Medical check valve according to claim 1, it is characterised in that: the sealing shroud is by elastic silica gel
Tubular construction made of material forms through-hole, the back taper that the outer surface of sealing shroud is shaped to convenient for sealing in the middle part of sealing shroud
Face.
3. a kind of no inner cover Medical check valve according to claim 1, it is characterised in that: the spool is by rigid plastics system
At.
4. a kind of no inner cover Medical check valve according to claim 1, it is characterised in that: the bar of the upper pole part of the spool
If being provided with arterial highway diversion trench along axial direction with it.
5. a kind of no inner cover Medical check valve according to claim 1, it is characterised in that: the bottom of the lower bar portion of the spool
The cross recess of protrusion or a word list slot of protrusion are provided on face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821476246.6U CN209026261U (en) | 2018-09-11 | 2018-09-11 | A kind of no inner cover Medical check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821476246.6U CN209026261U (en) | 2018-09-11 | 2018-09-11 | A kind of no inner cover Medical check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209026261U true CN209026261U (en) | 2019-06-25 |
Family
ID=66904319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821476246.6U Expired - Fee Related CN209026261U (en) | 2018-09-11 | 2018-09-11 | A kind of no inner cover Medical check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209026261U (en) |
-
2018
- 2018-09-11 CN CN201821476246.6U patent/CN209026261U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190625 Termination date: 20200911 |