CN213088837U - Medical one-way valve adopting combined valve core - Google Patents
Medical one-way valve adopting combined valve core Download PDFInfo
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- CN213088837U CN213088837U CN202020817654.4U CN202020817654U CN213088837U CN 213088837 U CN213088837 U CN 213088837U CN 202020817654 U CN202020817654 U CN 202020817654U CN 213088837 U CN213088837 U CN 213088837U
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- sealing
- inner plug
- plug
- valve core
- spring
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- Expired - Fee Related
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Abstract
The utility model relates to a medical one-way valve with a combined valve core. The valve comprises a valve body, an outer cover, a spring and a combined valve core, wherein the combined valve core consists of a middle rod with a cross-shaped section, a sealing sleeve and an inner plug, the middle rod is integrally formed by an upper rod part, a lower rod part and a middle part, the spring is sleeved on the upper rod part, and two ends of the spring are respectively propped between the outer cover and the middle part; the sealing sleeve is sleeved from the lower rod part and then positioned below the middle part, the outer surface of the sealing plug is formed into an inverted cone shape, and the middle communicating cavity is provided with an inverted cone hole-shaped structure which is in sealing fit with the inverted cone shape of the sealing plug; the inner plug is a sleeve body with a concave cavity, the inner plug is sleeved at the bottom of the lower rod part through a groove, and the upper end face of the inner plug is pressed on the sealing sleeve so that the sealing sleeve is in compression fit with the middle part; after adopting above-mentioned structure, this is novel to have simple structure, the equipment is convenient, switch on through mechanical transmission and guarantee the characteristics of reliability.
Description
Technical Field
The utility model belongs to the technical field of medical check valve among the medical instrument, especially, relate to a simple structure, equipment are convenient, switch on through mechanical transmission and guarantee the medical check valve of reliability ability adoption combination case.
Background
For example, in order to make the medical check valve simple and reliable, and to make the valve core structure of the medical check valve continuously new, the valve core needs to have both rigidity of certain hard material and tightness of soft material, if soft and hard glue is used for injection molding, the process cost is increased, and if a split combined structure is adopted, as shown in fig. 1, the existing structure utilizes liquid and gas to push the sealing plug to overcome the spring force to realize conduction, but the structure also has the fault that the acting force of gas and liquid is not enough to push the sealing plug and the spring force to be superposed, so that the check valve cannot be opened, and the fault is in the medical industry, cannot be allowed, therefore, further improvement on the existing structure is needed to ensure that the one-way valve can be opened certainly, and the reliability is ensured.
Disclosure of Invention
The utility model aims at the defects of the prior art, and provides the medical one-way valve which is simple in structure, convenient to assemble and capable of guaranteeing the reliability by means of mechanical transmission conduction and adopts the combined valve core.
In order to achieve the purpose, the novel technical scheme is as follows: a medical one-way valve adopting a combined valve core comprises a valve body, an outer cover, a spring and the combined valve core, wherein the valve body is of a hollow structure, the interior of the valve body is divided into an upper cavity, a lower cavity and a middle communicating cavity, the outer cover is of a hollow structure, the lower part of the outer cover is inserted and sealed in an upper opening of the valve body, the combined valve core consists of a middle rod with a cross-shaped section, a seal sleeve and an inner plug, the middle rod is integrally formed by an upper rod part, a lower rod part and a middle part, the spring is sleeved on the upper rod part, and two ends of the spring are respectively abutted between the outer cover and the middle part; the sealing sleeve is sleeved from the lower rod part and then positioned below the middle part, the outer surface of the sealing plug is formed into an inverted cone shape, and the middle communicating cavity is provided with an inverted cone hole-shaped structure which is in sealing fit with the inverted cone shape of the sealing plug; the inner plug is a sleeve body with a concave cavity, the inner plug is sleeved at the bottom of the lower rod part through a groove, and the upper end face of the inner plug is pressed on the sealing sleeve so that the sealing sleeve is in compression fit with the middle part; under the sealing state, the sealing plug is inserted into the middle part communicating cavity under the action of spring force to form the sealing state, and under the conduction state, the inner plug is pressed against the sealing plug under the action of external force to overcome the spring force to upwards leave the middle part communicating cavity to form the conduction state.
And a limiting outer convex block is formed on the outer side surface of the inner plug, and the outer convex block of the inner plug is abutted against the edge of the bottom surface of the middle communicating cavity to limit in a conducting state.
The upper rod part, the lower rod part and the middle part of the middle rod are integrally formed by hard plastic through injection molding.
The sealing plug is made of soft plastic.
The bottom of the inner plug is provided with a groove or a bulge corresponding to an injection nozzle of an external injector.
After the structure is adopted, the novel structure of the inner plug is improved, the upper end surface of the inner plug is pressed on the sealing sleeve, and in a conduction state, the inner plug presses the sealing sleeve to overcome the elastic force of the spring and upwards leave the middle communication cavity to form a conduction state under the action of external force, so that the mechanical traditional conduction is realized, and the gas or liquid is prevented from overcoming the sealing force and the elastic force of the spring to improve the reliability; in addition, this novel structure that has adopted the combination case, has realized the requirement of rigidity intensity and sealing performance with the part of two different materials of sealing plug and king-rod. From last, this is novel to have simple structure, the equipment is convenient, switch on through mechanical transmission and guarantee the characteristics of reliability.
Drawings
FIG. 1 is a schematic cross-sectional view of a prior art check valve;
FIG. 2 is a schematic cross-sectional view of the embodiment of the present invention in a sealed state;
FIG. 3 is a schematic cross-sectional view of the open state of the present novel embodiment;
FIG. 4 is a schematic sectional view of a combination valve cartridge according to an embodiment of the present invention;
fig. 5 is a schematic perspective exploded view of the combination valve core according to the present invention.
Detailed Description
As shown in fig. 1-5, a medical check valve using a combined valve core comprises a valve body 10, an outer cover 20, a spring 30 and a combined valve core 40, wherein the valve body 10 is of a hollow structure, the interior of the valve body 10 is divided into an upper cavity 11, a lower cavity 12 and a middle communicating cavity 13, the outer cover 20 is of a hollow structure, the lower part of the outer cover 20 is inserted and sealed in an upper opening of the valve body 10, the combined valve core 40 is composed of a middle rod 41 with a cross-shaped section, a sealing sleeve 42 and an inner plug 43, the middle rod 41 is integrally formed by an upper rod part 411, a lower rod part 412 and a middle part 413, the spring 30 is sleeved on the upper rod part 411, and two ends of the spring 30 are respectively pressed between the outer cover 20 and the middle part; the sealing sleeve 42 is sleeved from the lower rod part 412 and positioned below the middle part 413, the outer surface of the sealing sleeve 42 is shaped into an inverted cone, and the middle communication cavity 13 is provided with an inverted cone hole structure which is in sealing fit with the inverted cone of the sealing sleeve 32; the inner plug 43 is a sleeve body with a concave cavity, the inner plug 43 is sleeved at the bottom of the lower rod part 412 through a groove, and the upper end face of the inner plug 43 is pressed against the sealing sleeve 42 so that the sealing sleeve 43 is in compression fit with the middle part 413; in the sealed state, the sealing plug 42 is inserted into the middle communicating cavity 13 under the elastic force of the spring 30 to form a sealed state, and in the conducted state, the inner plug 43 presses the sealing sleeve 42 under the external force to overcome the elastic force of the spring 30 to upwards leave the middle communicating cavity 13 to form a conducted state.
And a limiting outer convex block 431 is formed on the outer side surface of the inner plug 43, and in a conducting state, the outer convex block 431 of the inner plug 43 is abutted against the edge of the bottom surface of the middle communicating cavity 13 for limiting.
The upper rod portion 411, the lower rod portion 412 and the middle portion 413 of the middle rod 41 are integrally injection molded by hard plastic.
The sealing plug 42 is made of a soft plastic, here silicone.
The bottom of the inner plug 43 is provided with a groove or protrusion 432 corresponding to the nozzle of the external injector.
When the sealing plug is used, in a sealing state, the spring 30 elastically presses the middle rod 41, the middle rod 41 is pressed on the sealing plug 42, and the sealing plug 42 is inserted into the middle communicating cavity 13 to form inverted cone-shaped sealing; when the nozzle of the external injector is pressed against the groove 432 at the bottom of the inner plug 43, so that the inner plug 43 is displaced upward, the inner plug 43 presses the sealing sleeve 42 against the spring 30 to move upward away from the middle communicating cavity 13 under the action of external force, and a conducting state is formed. Therefore, the mechanical traditional conduction is realized, and the gas or liquid is prevented from overcoming the sealing force and the spring force, so that the reliability is improved; in addition, the novel combined valve core 40 structure is adopted, and the requirements on rigidity strength and sealing performance are met by two parts made of different materials, namely the sealing plug 42 and the middle rod 41. From last, this is novel to have simple structure, the equipment is convenient, switch on through mechanical transmission and guarantee the characteristics of reliability.
Naturally, the present invention can be embodied in many other forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be made by one skilled in the art without departing from the spirit or essential attributes thereof, and it is intended that all such changes and modifications be considered as within the scope of the appended claims.
Claims (5)
1. The utility model provides an adopt medical check valve of combination case, including valve body, enclosing cover, spring and combination case, the valve body is hollow structure, divide into last cavity and lower cavity and middle part intercommunication chamber in the valve body, and the enclosing cover is hollow structure, and the lower part of enclosing cover is inserted and is established in the last opening of valve body, its characterized in that: the combined valve core consists of a middle rod with a cross-shaped section, a sealing sleeve and an inner plug, the middle rod is integrally formed by an upper rod part, a lower rod part and a middle part, a spring is sleeved on the upper rod part, and two ends of the spring are respectively propped between an outer cover and the middle part; the sealing sleeve is sleeved from the lower rod part and then positioned below the middle part, the outer surface of the sealing plug is formed into an inverted cone shape, and the middle communicating cavity is provided with an inverted cone hole-shaped structure which is in sealing fit with the inverted cone shape of the sealing plug; the inner plug is a sleeve body with a concave cavity, the inner plug is sleeved at the bottom of the lower rod part through a groove, and the upper end face of the inner plug is pressed on the sealing sleeve so that the sealing sleeve is in compression fit with the middle part; under the sealing state, the sealing plug is inserted into the middle part communicating cavity under the action of spring force to form the sealing state, and under the conduction state, the inner plug is pressed against the sealing plug under the action of external force to overcome the spring force to upwards leave the middle part communicating cavity to form the conduction state.
2. The medical check valve adopting the combined valve core as claimed in claim 1, wherein: and a limiting outer convex block is formed on the outer side surface of the inner plug, and the outer convex block of the inner plug is abutted against the edge of the bottom surface of the middle communicating cavity to limit in a conducting state.
3. The medical check valve adopting the combined valve core as claimed in claim 2, wherein: the upper rod part, the lower rod part and the middle part of the middle rod are integrally formed by hard plastic through injection molding.
4. The medical check valve adopting the combined valve core as claimed in claim 3, wherein: the sealing plug is made of soft plastic.
5. The medical check valve adopting the combined valve core as claimed in claim 4, wherein: the bottom of the inner plug is provided with a groove or a bulge corresponding to an injection nozzle of an external injector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020817654.4U CN213088837U (en) | 2020-05-18 | 2020-05-18 | Medical one-way valve adopting combined valve core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020817654.4U CN213088837U (en) | 2020-05-18 | 2020-05-18 | Medical one-way valve adopting combined valve core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213088837U true CN213088837U (en) | 2021-04-30 |
Family
ID=75601288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020817654.4U Expired - Fee Related CN213088837U (en) | 2020-05-18 | 2020-05-18 | Medical one-way valve adopting combined valve core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213088837U (en) |
-
2020
- 2020-05-18 CN CN202020817654.4U patent/CN213088837U/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: 20210430 |