CN215172521U - One-way valve - Google Patents
One-way valve Download PDFInfo
- Publication number
- CN215172521U CN215172521U CN202120790948.7U CN202120790948U CN215172521U CN 215172521 U CN215172521 U CN 215172521U CN 202120790948 U CN202120790948 U CN 202120790948U CN 215172521 U CN215172521 U CN 215172521U
- Authority
- CN
- China
- Prior art keywords
- valve core
- movable valve
- conical part
- fixed seat
- inner hole
- 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 abstract description 19
- 238000013016 damping Methods 0.000 claims abstract description 8
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 239000007788 liquid Substances 0.000 abstract description 8
- 230000008014 freezing Effects 0.000 abstract description 4
- 238000007710 freezing Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 241001391944 Commicarpus scandens Species 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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- Check Valves (AREA)
Abstract
The utility model relates to a control valve technical field, specifically speaking relate to a check valve. In winter with low air temperature, liquid exists on the pipeline, the pipeline and the faucet are easy to break due to freezing, water resources are wasted, and other uncontrollable factors can be generated in a laboratory. A fixed ring is clamped on a fixed seat of a one-way valve; one end of the fixed seat is provided with an inward bulge, and one end of the fixed ring in the fixed seat is a conical part; the movable valve core is sleeved on the bulge, the other end of the movable valve core penetrates through the hollow inner cavity of the fixed seat and is positioned in the inclined inner hole of the conical part, and the bulge and the movable valve core are sleeved with a damping spring; when no pressure exists, a gap exists between the upper plane of the movable valve core and the inlet end of the inclined inner hole of the conical part, air is introduced, and when pressure exists on the side of the movable valve core, the movable valve core is ejected upwards to seal the inlet end of the inclined inner hole of the conical part and passes through a medium. The utility model has reasonable structure, the pressure generated by the medium during the process can lead the movable valve core to carry out self sealing, the detachable structure between each part can lead the installation and the maintenance to be convenient.
Description
Technical Field
The utility model relates to a control valve technical field, more specifically say and relate to a check valve.
Background
The one-way valve is used for controlling the flow direction of a medium, conducting in a one-way mode, stopping in a reverse mode and automatically controlled by the valve core. In the prior art, especially in winter with low temperature, if liquid exists on a pipeline, the pipeline and a water faucet are easy to break due to freezing, so that water resource waste is caused, and other uncontrollable factors can be generated in a laboratory.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a check valve which is reasonable in structure, convenient to use and especially suitable for pipelines, aiming at the defects of the prior art.
A check valve comprises a fixed seat, wherein a fixed ring is clamped on the fixed seat, and the fixed seat and the fixed ring are of a through hollow structure; one end of the fixed seat is provided with an inward bulge, and one end of the fixed ring, which is positioned in the fixed seat, is a conical part; the movable valve core is sleeved on the bulge, the other end of the movable valve core penetrates through the hollow inner cavity of the fixed seat and is positioned in the inclined inner hole of the conical part, and a damping spring is sleeved on the bulge and the outer side of the movable valve core; when no pressure exists, a gap exists between the upper plane of the movable valve core and the inlet end of the inclined inner hole of the conical part for introducing air, and when pressure exists on the side of the movable valve core, the movable valve core is ejected upwards to seal the inlet end of the inclined inner hole of the conical part for passing through a medium. The utility model has the advantages of reasonable structure, set up the arch and carried out the structure and strengthen, by the pressure that the medium process produced, make movable valve core seal by oneself, and detachable construction between each part, installation and maintenance convenience.
As a further improvement and supplement to the above solution, the present invention further comprises the following additional technical features:
the fixing seat is provided with a plurality of open grooves in the circumferential direction, so that the entering air can uniformly flow in a dispersing way, and the pressure of the entering air is effectively controlled.
The movable valve core and the fixing ring are respectively provided with a first sealing ring and a second sealing ring, so that the movable valve core and the fixing ring can be effectively sealed.
The fixed seat, the movable valve core and the fixed ring are made of polytetrafluoroethylene, the weight is light, the dimensional accuracy of each part is guaranteed by a die, the cost is low, the service life is long, and the wear resistance is realized.
The first sealing ring and the second sealing ring are made of NBR (nitrile-butadiene rubber), and are wear-resistant and long in service life.
The damping spring be the pressure spring, simple structure is practical, the damping is effectual, the convenient and fast that resets has effectively carried out the buffering.
The number of the grooves is 4, the grooves are symmetrically distributed, and the structure is reasonable.
Use the utility model discloses following beneficial effect can be reached: the utility model has the advantages of simple and reasonable structure, with low costs, long service life can realize one side flowing back of ventilating, and the function of liquid is led to one side, makes the liquid of pipeline discharge fast, establishes double seal's structure, and modular structure between each part, dismantles more convenient and fast. In the state of no water inlet, the one-way valve is in an open state, and the liquid in related parts such as a faucet, a pipe and the like can be automatically drained. The water faucet and the pipe are effectively prevented from freezing and expanding at low temperature, and related parts such as the water faucet and the pipe are effectively prevented from being damaged, so that the water faucet and the pipe are effectively protected.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the installation position of the present invention.
Fig. 3 is a schematic structural diagram of the middle movable valve core 3 of the present invention.
Fig. 4 is a schematic structural diagram of the fixing ring 6 of the present invention.
Fig. 5 is a front view of the fixing base 1 of the present invention.
Fig. 6 is a plan view of the fixing base 1 of the present invention.
Fig. 7 is a sectional view taken along the line a-a of fig. 6 of the fixing base 1 of the present invention.
Detailed Description
The following detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in fig. 1-7, the present invention relates to a check valve.
This embodiment check valve, including fixing base 1, fixing base 1 on the joint have solid fixed ring 6, fixing base 1 and solid fixed ring 6 are the hollow structure who runs through, and fixing base 1 and solid fixed ring 6 are with the axial lead. One end of the fixing seat 1 is provided with an inward bulge 11, the other end of the fixing seat is provided with an inward step 13, the fixing ring 6 is of a two-part structure, one side of the fixing ring is of a hollow cylindrical structure, one side of the fixing ring is a conical part 62 connected with the hollow cylindrical structure, an oblique inner hole is formed in the conical part 62, and the oblique inner hole is communicated with a straight hole of the cylindrical structure section. The cylindrical structure part is jointed above the fixed seat 1, and the bottom surface of the conical part 62 is jointed with the concave step 13. The movable valve core 3 is sleeved on the protrusion 11, the other end of the movable valve core penetrates through the hollow inner cavity of the fixed seat 1 and is located in the inclined inner hole of the conical part 62, the outer diameter of the movable valve core 3 is slightly larger than the through hole of the cylindrical structure section of the fixed ring 6, and the damping spring 2 is sleeved on the outer sides of the protrusion 11 and the movable valve core 3. When no pressure exists, a gap exists between the upper plane of the movable valve core 3 and the inclined inner hole inlet end of the conical part 62 for introducing air, the size of the gap can be set according to requirements, for example, the wire diameter or the length of the spring can be changed, the size of the gap can be changed, in the embodiment, the gap is 2-3mm, when pressure exists on the side of the movable valve core 3, the movable valve core 3 is ejected upwards, and the inclined inner hole inlet end of the conical part 62 is sealed for passing through a medium.
Furthermore, the fixing seat 1 is provided with a plurality of open grooves 12 in the circumferential direction, and the grooves 12 are communicated with the hollow inner cavity.
Furthermore, a first sealing ring 4 and a second sealing ring 5 are respectively arranged on the movable valve core 3 and the fixing ring 6. The movable valve core 3 is provided with a first annular groove 31 for sleeving the first sealing ring 4. The fixing ring 6 is provided with a second circular groove 61 on the cylindrical structure section for sleeving the second sealing ring 5. Effectively fix a position and fix two sealing washers, prevent that the sealing washer from removing.
Furthermore, the materials of the fixed seat 1, the movable valve core 3 and the fixed ring 6 are polytetrafluoroethylene.
Furthermore, the first sealing ring 4 and the second sealing ring 5 are made of NBR.
Furthermore, the damping spring 2 is a compression spring.
Furthermore, the number of the grooves 12 is 4, and the grooves are circumferentially distributed.
As shown in fig. 2, when the check valve is used, the check valve is installed at a corresponding position on a pipeline wall, the pipeline end is sealed by the second sealing ring 5, the check valve is in an open state in a state without water inflow, and due to the gravity of the movable valve element 3, the pressure spring is in a pressure state and assists in supporting the movable valve element 3. Air enters the fixing seat 1 through a straight hole of the cylindrical section on the fixing ring 6 and enters the pipeline through the grooves 12 with 4 openings, liquid in parts such as a faucet and a pipe can be automatically emptied, and the liquid is discharged through a connector connected with the electric three-way valve. Effectively prevents the related parts of the water tap and the pipeline from freezing and expanding at low temperature to damage the related parts of the water tap and the pipeline. When a medium passes through the end of the movable valve element 3 on the one-way valve, namely pressure exists, the movable valve element 3 is pushed upwards, the pressure spring is reset, the movable valve element 3 seals the inclined inner hole inlet end of the conical part 62, meanwhile, the first sealing ring 4 seals the fixed seat 1, and liquid in a pipeline or a faucet can flow.
The above is the preferred embodiment of the present invention, and the protection scope of the present invention is not limited, and the deformation and improvement made by the design idea of the present invention for those skilled in the art should be considered as the protection scope of the present invention.
Claims (7)
1. A check valve, includes fixing base (1), its characterized in that: the fixing seat (1) is clamped with a fixing ring (6), and the fixing seat (1) and the fixing ring (6) are of a through hollow structure; one end of the fixed seat (1) is provided with an inward bulge (11), and one end of the fixed ring (6) positioned in the fixed seat (1) is a conical part (62); the movable valve core (3) is sleeved on the bulge (11), the other end of the movable valve core penetrates through the hollow inner cavity of the fixed seat (1) and is positioned in the inclined inner hole of the conical part (62), and the damping spring (2) is sleeved on the outer sides of the bulge (11) and the movable valve core (3); when no pressure exists, a gap exists between the upper plane of the movable valve core (3) and the inlet end of the inclined inner hole of the conical part (62) for introducing air, and when pressure exists at the side of the movable valve core (3), the movable valve core (3) is ejected upwards to seal the inlet end of the inclined inner hole of the conical part (62) for passing through a medium.
2. The check valve as in claim 1, wherein: the fixing seat (1) is provided with a plurality of open grooves (12) in the circumferential direction.
3. The check valve as in claim 1, wherein: and a first sealing ring (4) and a second sealing ring (5) are respectively arranged on the movable valve core (3) and the fixing ring (6).
4. The check valve as in claim 1, wherein: the fixed seat (1), the movable valve core (3) and the fixed ring (6) are made of polytetrafluoroethylene.
5. The check valve as in claim 3, wherein: the first sealing ring (4) and the second sealing ring (5) are made of NBR.
6. The check valve as in claim 1, wherein: the damping spring (2) is a compression spring.
7. The check valve as in claim 2, wherein: the number of the grooves (12) is 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120790948.7U CN215172521U (en) | 2021-04-16 | 2021-04-16 | One-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120790948.7U CN215172521U (en) | 2021-04-16 | 2021-04-16 | One-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215172521U true CN215172521U (en) | 2021-12-14 |
Family
ID=79360738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120790948.7U Active CN215172521U (en) | 2021-04-16 | 2021-04-16 | One-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215172521U (en) |
-
2021
- 2021-04-16 CN CN202120790948.7U patent/CN215172521U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 312000 No. 8888, Jinxing village, Qixing street, Xinchang County, Shaoxing City, Zhejiang Province (buildings 1 and 2) Patentee after: Zhejiang Cohen Experimental Equipment Co.,Ltd. Address before: 312000 No. 8888, Jinxing village, Qixing street, Xinchang County, Shaoxing City, Zhejiang Province (buildings 1 and 2) Patentee before: Zhejiang Cohen Experimental Equipment Co.,Ltd. |
|
| CP03 | Change of name, title or address |