CN207421413U - A kind of check valve - Google Patents
A kind of check valve Download PDFInfo
- Publication number
- CN207421413U CN207421413U CN201721462895.6U CN201721462895U CN207421413U CN 207421413 U CN207421413 U CN 207421413U CN 201721462895 U CN201721462895 U CN 201721462895U CN 207421413 U CN207421413 U CN 207421413U
- Authority
- CN
- China
- Prior art keywords
- valve body
- tube body
- seal cavity
- seal
- spool
- 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.)
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Links
- 238000007789 sealing Methods 0.000 claims description 11
- 239000011521 glass Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 241001062009 Indigofera Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
Landscapes
- Check Valves (AREA)
Abstract
The utility model discloses a kind of check valves, including upper valve body, lower valve body, spool and spring, the lower end of the upper valve body and the upper end of the lower valve body cooperatively form seal cavity, the diameter of the seal cavity lower cavity is more than the diameter of upper chamber, the spool is placed in the seal cavity, the spool includes sequentially connected upper tube body, seal boss and lower tube body, through hole is offered on the side wall of the upper tube body and lower tube body, the outer wall of the upper tube body is contacted with the inner wall of the upper chamber of the seal cavity, the spring pressure is arranged between the seal boss and the bottom surface of seal cavity.The check valve of the utility model has many advantages, such as that reliable and stable, service life is long.
Description
Technical field
The utility model is related to food and medicine production field more particularly to a kind of check valves.
Background technology
In food, leechdom production line, the pipeline with check valve needed for the equipment such as filling is mostly hose, and check valve is mostly glass
Glass indigo plant core check valve, since liquid usually carries certain pressure in the pipeline of filling apparatus, glass system indigo plant core check valve
It is fragile, and hose is stressed yielding, and it is unstable and fill pin water clock to lead to problems such as to occur filling amount.
Utility model content
The technical problems to be solved in the utility model is to overcome the deficiencies of the prior art and provide a kind of reliable and stable, use
The check valve of long lifespan.
In order to solve the above technical problems, the utility model uses following technical scheme：
A kind of check valve, including upper valve body, lower valve body, spool and spring, the lower end of the upper valve body and the lower valve body
Upper end cooperatively form seal cavity, the diameter of the seal cavity lower cavity is more than the diameter of upper chamber, the spool
Be placed in the seal cavity, the spool include sequentially connected upper tube body, seal boss and lower tube body, the upper tube body and
Through hole is offered on the side wall of lower tube body, the outer wall of the upper tube body and the inner wall of the upper chamber of the seal cavity connect
It touches, the spring pressure is arranged between the seal boss and the bottom surface of seal cavity.
As being further improved for above-mentioned technical proposal：
The threaded upper ends of the upper valve body are connected with the first pipe cap, and the lower end of the lower valve body is threaded with the second pipe
Cap.
The first sealing ring is equipped at the cooperation of the upper valve body and lower valve body.
The second sealing ring is equipped between the upper surface of the seal boss and the lower face of the upper valve body.
Compared with prior art, the utility model has the advantage of：
The check valve of the utility model, when separating state, the pressure in the pipeline of upper valve body connection is less than spring under
The sum of pressure in the pipeline of valve body connection, by the spring being arranged between seal boss and the bottom surface of seal cavity is pressed to make upper tube body
In the upper chamber of seal cavity, seal boss separates upper valve body and lower valve body, when in the pipeline of upper valve body connection
When pressure is more than the sum of pressure in the pipeline that spring is connected with lower valve body, spool moves down, Jie in upper valve body institute connecting line
Matter is entered by the through hole on upper tube body and down tube body sidewall in the pipeline that lower valve body is connected, i.e., check valve is in unicom shape
State, the check valve of the utility model form valve body by upper valve body and lower valve body, i.e. valve body uses split structure, convenient for unidirectional
The repair and replacement of valve inner spool and spring, and the structure of upper valve body, lower valve body and spool is simple, and metal material may be employed
It makes, is hardly damaged, service life is long.
Description of the drawings
Fig. 1 is the structure diagram of the utility model check valve.
Fig. 2 is the structure diagram of the utility model inner elements of check valve.
Each label represents in figure：
1st, upper valve body；2nd, lower valve body；3rd, spool；31st, upper tube body；32nd, seal boss；33rd, lower tube body；4th, spring；5th, it is close
Seal cavity；6th, the first pipe cap；7th, the second pipe cap；8th, the first sealing ring；9th, the second sealing ring.
Specific embodiment
The utility model is described in further details below with reference to Figure of description and specific embodiment.
Fig. 1 to Fig. 2 shows a kind of embodiment of the utility model check valve, upper valve body 1, lower valve body 2, spool 3 and bullet
Spring 4, the lower end of upper valve body 1 and the upper end of lower valve body 2 cooperatively form seal cavity 5, and the diameter of 5 lower cavity of seal cavity is more than
The diameter of upper chamber, spool 3 are placed in seal cavity 5, and spool 3 includes sequentially connected upper tube body 31,32 and of seal boss
Offer through hole on the side wall of lower tube body 33, upper tube body 31 and lower tube body 33, the outer wall of upper tube body 31 is upper with seal cavity 5
The inner wall contact of portion's cavity, the pressure of spring 4 is arranged between seal boss 32 and the bottom surface of seal cavity 5, when separating state, upper valve
The sum of pressure in the pipeline that pressure in the pipeline that body 1 connects is less than spring 4 and lower valve body 2 connects, it is convex arranged on sealing by pressure
Spring 4 between the bottom surface of platform 32 and seal cavity 5 makes upper tube body 31 be located in the upper chamber of seal cavity 5, seal boss
32 separate upper valve body 1 and lower valve body 2, are connected when the pressure in the pipeline that upper valve body 1 connects more than spring 4 and lower valve body 2
During the sum of pressure in pipeline, spool 3 moves down, and the medium in 1 connecting line of upper valve body passes through upper tube body 31 and lower tube body 33
Through hole on side wall enters in the pipeline that lower valve body 2 is connected, i.e. check valve is in unicom state, the utility model it is unidirectional
Valve forms valve body by upper valve body 1 and lower valve body 2, i.e. valve body uses split structure, convenient for check valve inner spool 3 and spring 4
Replacement, repair, and the structure of upper valve body 1, lower valve body 2 and spool 3 is simple, metal material making may be employed, not rapid wear
Bad, service life is long.
In the present embodiment, the threaded upper ends of upper valve body 1 are connected with the first pipe cap 6, and the lower end of lower valve body 2 is threaded with
Two pipe caps 7, using threaded connection, the first pipe cap 6 and the second pipe cap 7 are not easily to fall off, and the first pipe cap 6 and the second pipe cap 7
To be connected with hard tube, hard tube is unlikely to deform, and avoids occurring the problems such as unstable filling amount and filling pin water clock during filling components.
In the present embodiment, the first sealing ring 8 is equipped at the cooperation of upper valve body 1 and lower valve body 2, improves the close of seal cavity 5
Sealing property.
In the present embodiment, the second sealing ring 9 is equipped between the upper surface of seal boss 32 and the lower face of upper valve body 1, is carried
Sealing performance during high partition state.
Although the utility model has been disclosed with preferred embodiment as above, the utility model is not limited to.It is any
Those skilled in the art, in the case where not departing from technical solutions of the utility model scope, all using the disclosure above
Technology contents technical solutions of the utility model are made with many possible changes and modifications or is revised as the equivalent of equivalent variations
Embodiment.Therefore, every content without departing from technical solutions of the utility model, according to the utility model technical spirit to above real
Any simple modifications, equivalents, and modifications that example is done are applied, should all be fallen in the range of technical solutions of the utility model protection.
Claims (4)
1. a kind of check valve, it is characterised in that：Including upper valve body（1）, lower valve body（2）, spool（3）And spring（4）, the upper valve
Body（1）Lower end and the lower valve body（2）Upper end cooperatively form seal cavity（5）, the seal cavity（5）Lower cavity
Diameter is more than the diameter of upper chamber, the spool（3）It is placed in the seal cavity（5）It is interior, the spool（3）Including connecting successively
The upper tube body connect（31）, seal boss（32）And lower tube body（33）, the upper tube body（31）And lower tube body（33）Side wall on
Offer through hole, the upper tube body（31）Outer wall and the seal cavity（5）Upper chamber inner wall contact, the spring
（4）Pressure is arranged on the seal boss（32）And seal cavity（5）Bottom surface between.
2. check valve according to claim 1, it is characterised in that：The upper valve body（1）Threaded upper ends be connected with first
Pipe cap（6）, the lower valve body（2）Lower end be threaded with the second pipe cap（7）.
3. check valve according to claim 1 or 2, it is characterised in that：The upper valve body（1）And lower valve body（2）Cooperation
Place is equipped with the first sealing ring（8）.
4. check valve according to claim 1 or 2, it is characterised in that：The seal boss（32）Upper surface with it is described
Upper valve body（1）Lower face between be equipped with the second sealing ring（9）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721462895.6U CN207421413U (en) | 2017-11-06 | 2017-11-06 | A kind of check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721462895.6U CN207421413U (en) | 2017-11-06 | 2017-11-06 | A kind of check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207421413U true CN207421413U (en) | 2018-05-29 |
Family
ID=62307442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721462895.6U Active CN207421413U (en) | 2017-11-06 | 2017-11-06 | A kind of check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207421413U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116123322A (en) * | 2023-02-27 | 2023-05-16 | 南通永裕制药机械有限公司 | Easy Clean Check Valves for Positive Displacement Pumps |
-
2017
- 2017-11-06 CN CN201721462895.6U patent/CN207421413U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116123322A (en) * | 2023-02-27 | 2023-05-16 | 南通永裕制药机械有限公司 | Easy Clean Check Valves for Positive Displacement Pumps |
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| GR01 | Patent grant |