CN220268520U - Check valve - Google Patents
Check valve Download PDFInfo
- Publication number
- CN220268520U CN220268520U CN202320482096.4U CN202320482096U CN220268520U CN 220268520 U CN220268520 U CN 220268520U CN 202320482096 U CN202320482096 U CN 202320482096U CN 220268520 U CN220268520 U CN 220268520U
- Authority
- CN
- China
- Prior art keywords
- water inlet
- inlet pipe
- convex ring
- pipe body
- spring
- 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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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 100
- 238000009434 installation Methods 0.000 claims abstract description 45
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
Abstract
The utility model discloses a check valve, which comprises a mounting pipe body, wherein a movable piece is arranged in the mounting pipe body and can slide relative to the mounting pipe body; the movable piece comprises a water inlet pipe and a limiting baffle, the water inlet pipe is sleeved in the installation pipe body, the water inlet pipe can slide in the installation pipe body along the axial direction of the installation pipe body, a limiting convex ring is integrally formed on the inner wall of the installation pipe body, a central hole is formed in the central position of the limiting convex ring, a water outlet hole is formed in the side wall of the bottom end of the water inlet pipe, and the bottom end of the water inlet pipe is fixedly connected with the limiting baffle after passing through the central hole; the top end of the limiting convex ring is provided with a spring, the spring is sleeved outside the water inlet pipe, and the spring is positioned between the limiting convex ring and the water inlet pipe; when the spring is in a normal state, the top end of the limit baffle is abutted against the bottom end of the limit convex ring, and a sealing state is kept between the limit baffle and the limit convex ring.
Description
Technical Field
The utility model relates to the field of water pipes, in particular to a check valve.
Background
It is known that on-off control of water flow is basically achieved by means of various control valves. Meanwhile, in order to avoid the water flow in the waterway from flowing reversely, a check valve is also adopted in the waterway to prevent the water flow from flowing reversely. Patent No. CN202021454174.2 discloses a check valve and a fluid control valve having the same, which can play a role in preventing backflow of water flow or other fluids, but the structure of the fluid control valve is complex, the parts are more, the assembly efficiency is affected, and the production cost of the check valve is increased, so that the check valve needs to be improved.
Disclosure of Invention
The utility model aims to solve the problems and provide the check valve which is simple in structure and convenient to use.
In order to achieve the above object, the technical scheme of the present utility model is as follows:
a check valve comprises a mounting pipe body, wherein a movable piece is arranged in the mounting pipe body and can slide relative to the mounting pipe body; the movable piece comprises a water inlet pipe and a limiting baffle, the water inlet pipe is sleeved in the installation pipe body, the water inlet pipe can slide in the installation pipe body along the axial direction of the installation pipe body, a limiting convex ring is integrally formed on the inner wall of the installation pipe body, a central hole is formed in the central position of the limiting convex ring, a water outlet hole is formed in the side wall of the bottom end of the water inlet pipe, and the bottom end of the water inlet pipe is fixedly connected with the limiting baffle after passing through the central hole; the top end of the limiting convex ring is provided with a spring, the spring is sleeved outside the water inlet pipe, and the spring is positioned between the limiting convex ring and the water inlet pipe; when the spring is in a normal state, the top end of the limit baffle is abutted against the bottom end of the limit convex ring, and a sealing state is kept between the limit baffle and the limit convex ring.
Further, the outer diameter of the upper end of the water inlet pipe is larger than that of the bottom end of the water inlet pipe, the spring is sleeved outside the bottom end of the water inlet pipe, the inner diameter of the spring is smaller than that of the upper end of the water inlet pipe, the top end of the spring is in contact with the upper end of the water inlet pipe, and the bottom end of the spring is in contact with the upper end face of the limit baffle.
Further, the top end of the water inlet pipe is provided with a plurality of water inlet holes along the circumferential direction of the water inlet pipe.
Further, the installation tube body is the metalwork, and installation tube body upper end periphery is provided with first mounting thread, and installation tube body bottom periphery is provided with the second mounting thread.
Further, a positioning convex ring is integrally formed on the periphery of the middle part of the mounting pipe body, and the positioning convex ring is positioned between the first mounting thread and the second mounting thread; the outside of the installation pipe body is sleeved with a sealing ring, and the sealing ring is positioned at the upper end of the positioning convex ring or the lower end of the positioning convex ring.
Compared with the prior art, the utility model has the advantages and positive effects that:
according to the utility model, by adopting the design that the movable part is arranged in the installation pipe body, when the installation pipe body is used, only the installation pipe body is required to be installed between two water pipes, when water flow enters the water inlet pipe from the top end of the water inlet pipe, the water inlet pipe and the limit baffle move downwards under the action of water pressure, the spring is in a compressed state, and the water flow in the water inlet pipe flows out of the water outlet hole into the installation pipe body and enters the other water pipe through the installation pipe body; when no water flow enters from the top end of the water inlet pipe, the spring is restored under the action of elasticity, the water inlet pipe and the limiting baffle can move upwards, the limiting baffle and the limiting convex ring are contacted to play a role in blocking, and the water flow is prevented from flowing back from the bottom end of the installation pipe body; the whole device has simple structure and fewer parts, can rapidly realize assembly production operation while reducing production cost, and brings convenience to production operation of the check valve.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a block diagram of the present utility model;
fig. 2 is a flow state structure diagram of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, modifications, equivalents, improvements, etc., which are apparent to those skilled in the art without the benefit of this disclosure, are intended to be included within the scope of this utility model.
As shown in fig. 1 and 2, the present embodiment discloses a check valve, which includes a mounting tube 1, wherein a movable member is disposed in the mounting tube 1 and can slide relative to the mounting tube 1;
the movable piece comprises a water inlet pipe 2 and a limit baffle 4, wherein the water inlet pipe 2 is sleeved in the installation pipe body 1, the water inlet pipe 2 can slide in the installation pipe body 1 along the axial direction of the installation pipe body l, the limit convex ring 104 is integrally formed on the inner wall of the installation pipe body 1, the center position of the limit convex ring 104 is provided with a center hole 105, the side wall of the bottom end of the water inlet pipe 2 is provided with a water outlet 202, and the bottom end of the water inlet pipe 2 passes through the center hole 105 and is fixedly connected with the limit baffle 4;
the top end of the limiting convex ring 104 is provided with a spring 3, the spring 3 is sleeved outside the water inlet pipe 2, and the spring 3 is positioned between the limiting convex ring 104 and the water inlet pipe 2; the external diameter of the upper end of the water inlet pipe 2 is larger than the external diameter of the bottom end of the water inlet pipe 2, the spring 3 is sleeved outside the bottom end of the water inlet pipe 2, the internal diameter of the spring 3 is smaller than the external diameter of the upper end of the water inlet pipe 2, the top end of the spring 3 is contacted with the bottom of the upper end of the water inlet pipe 2, and the bottom end of the spring 3 is contacted with the upper end face of the limit baffle 4.
The reducing design of the water inlet pipe can be used for conveniently installing the spring, and meanwhile, the phenomenon that the spring is separated from the water inlet pipe can be avoided, so that the use effect of the utility model is ensured.
When the spring 3 is in a normal state, the top end of the limit baffle 4 is abutted against the bottom end of the limit convex ring 104, and a sealing state is kept between the limit baffle and the limit convex ring; when the spring 3 is in a compressed state, the water outlet 202 is communicated with the bottom end inside the mounting tube 1.
The top end of the water inlet pipe 2 is provided with a plurality of water inlet holes 201 along the circumferential direction of the water inlet pipe 2. The design can block larger foreign matters or impurities on the outer side of the water inlet pipe, and the phenomenon that the water outlet hole is blocked due to the fact that the larger foreign matters or impurities directly enter the water inlet pipe is avoided; when the blocking state of the foreign matters occurs, the foreign matters intercepted at the top end of the water inlet pipe can be taken out only by disassembling the check valve, and the operation is more convenient.
The installation body 1 is the metalwork, and installation body 1 upper end periphery is provided with first installation screw thread 101, and installation body 1 bottom periphery is provided with second installation screw thread 102. A positioning convex ring 103 is integrally formed on the periphery of the middle part of the mounting pipe body l, and the positioning convex ring 103 is positioned between the first mounting thread 10l and the second mounting thread 102; the outside cover of installation body 1 is equipped with sealing washer 5, and sealing washer 5 is located location bulge loop 103 upper end or location bulge loop 103 lower extreme.
When the installation operation is carried out, the water channel backflow prevention device can achieve the technical effect of preventing the water channel backflow by only connecting the water inlet pipe with the first installation thread and then connecting the water outlet pipe with the second installation thread, is convenient and quick to connect and operate, can achieve the sealing effect by the design of the sealing ring after connection, avoids water leakage and water seepage phenomena, and further improves the use effect of the water channel backflow prevention device.
According to the utility model, by adopting the design that the movable part is arranged in the installation pipe body, when the installation pipe body is used, only the installation pipe body is required to be installed between two water pipes, when water flow enters the water inlet pipe from the top end of the water inlet pipe, the water inlet pipe and the limit baffle move downwards under the action of water pressure, the spring is in a compressed state, and the water flow in the water inlet pipe flows out of the water outlet hole into the installation pipe body and enters the other water pipe through the installation pipe body (as shown in fig. 2); when no water flow enters from the top end of the water inlet pipe, the spring is restored under the action of elasticity, the water inlet pipe and the limit baffle can move upwards, the limit baffle is in contact with the limit convex ring to play a role in blocking, and the water flow is prevented from flowing back from the bottom end of the installation pipe body (as shown in figure 1); the whole device has simple structure and fewer parts, can rapidly realize assembly production operation while reducing production cost, and brings convenience to production operation of the check valve.
Claims (5)
1. A check valve comprises a mounting pipe body, wherein a movable piece is arranged in the mounting pipe body and can slide relative to the mounting pipe body; the method is characterized in that: the movable piece comprises a water inlet pipe and a limiting baffle, the water inlet pipe is sleeved in the installation pipe body, the water inlet pipe can slide in the installation pipe body along the axial direction of the installation pipe body, a limiting convex ring is integrally formed on the inner wall of the installation pipe body, a central hole is formed in the central position of the limiting convex ring, a water outlet hole is formed in the side wall of the bottom end of the water inlet pipe, and the bottom end of the water inlet pipe is fixedly connected with the limiting baffle after passing through the central hole; the top end of the limiting convex ring is provided with a spring, the spring is sleeved outside the water inlet pipe, and the spring is positioned between the limiting convex ring and the water inlet pipe; when the spring is in a normal state, the top end of the limit baffle is abutted against the bottom end of the limit convex ring, and a sealing state is kept between the limit baffle and the limit convex ring.
2. The non-return valve according to claim 1, wherein: the outer diameter of the upper end of the water inlet pipe is larger than that of the bottom end of the water inlet pipe, the spring is sleeved outside the bottom end of the water inlet pipe, the inner diameter of the spring is smaller than that of the upper end of the water inlet pipe, the top end of the spring is in contact with the upper end of the water inlet pipe, and the bottom end of the spring is in contact with the upper end face of the limit baffle.
3. The non-return valve according to claim 2, wherein: the top end of the water inlet pipe is provided with a plurality of water inlet holes along the circumferential direction of the water inlet pipe.
4. A non-return valve as claimed in claim 3, wherein: the installation pipe body is the metalwork, and installation pipe body upper end periphery is provided with first mounting thread, and installation pipe body bottom periphery is provided with the second mounting thread.
5. The non-return valve according to claim 4, wherein: the outer periphery of the middle part of the mounting pipe body is integrally formed with a positioning convex ring, and the positioning convex ring is positioned between the first mounting thread and the second mounting thread; the outside of the installation pipe body is sleeved with a sealing ring, and the sealing ring is positioned at the upper end of the positioning convex ring or the lower end of the positioning convex ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320482096.4U CN220268520U (en) | 2023-03-14 | 2023-03-14 | Check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320482096.4U CN220268520U (en) | 2023-03-14 | 2023-03-14 | Check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220268520U true CN220268520U (en) | 2023-12-29 |
Family
ID=89300773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320482096.4U Active CN220268520U (en) | 2023-03-14 | 2023-03-14 | Check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220268520U (en) |
-
2023
- 2023-03-14 CN CN202320482096.4U patent/CN220268520U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |