CN220168649U - Self-centering lifting check valve - Google Patents
Self-centering lifting check valve Download PDFInfo
- Publication number
- CN220168649U CN220168649U CN202321945690.9U CN202321945690U CN220168649U CN 220168649 U CN220168649 U CN 220168649U CN 202321945690 U CN202321945690 U CN 202321945690U CN 220168649 U CN220168649 U CN 220168649U
- Authority
- CN
- China
- Prior art keywords
- valve
- centering
- sliding blocks
- clack
- valve clack
- 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
- 230000006835 compression Effects 0.000 claims abstract description 11
- 238000007906 compression Methods 0.000 claims abstract description 11
- 239000012530 fluid Substances 0.000 abstract description 8
- 238000007789 sealing Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Check Valves (AREA)
Abstract
The utility model relates to the technical field of lifting check valves, in particular to a self-centering lifting check valve, which comprises a valve body, a valve cover and a valve clack, and is characterized in that: the valve clack is provided with a centering excircle, and the valve body is provided with a centering guide hole matched with the centering excircle; the valve cover is provided with a guide shaft, the guide shaft is provided with symmetrically slidable sliding blocks, and the sliding blocks are connected with the connecting blocks on the valve clack through connecting rods; compression springs are arranged between the two sliding blocks and the valve cover; when the fluid lifting valve moves upwards, the connecting rod drives the sliding blocks to slide along the two sides of the guide shaft at the moment; when the flow is reduced, the compression spring pushes the sliding blocks to move in opposite directions, so that the valve clack is driven to move downwards, and sealing is achieved. The utility model has the advantages that: firstly, the valve clack is centered, the centering area is wide, and the stability is good; secondly, sealing is formed between the valve clack and the valve cover, so that corrosion of the compression spring is avoided; thirdly, the length of the connecting rod can be adjusted according to the requirements, so that the flow of the passing fluid can be adjusted; fourthly, the valve clack is prevented from rotating.
Description
Technical Field
The utility model relates to the technical field of lifting check valves, in particular to a self-centering lifting check valve.
Background
The check valve is also called a one-way valve or a check valve, and is used for preventing the medium in the pipeline from flowing backwards so as to prevent accidents. Typically, the fluid under pressure causes the valve flaps to open and flow from the inlet side to the outlet side. When the inlet side pressure is lower than the outlet side, the valve clack automatically closes the channel under the action of the fluid pressure and the gravity of the valve clack, and the backflow of the fluid is prevented. According to different movement modes of the valve clack, the check valve is mainly divided into three types of lifting type, swing type and butterfly type. The valve body of the lifting check valve is similar to that of a stop valve, and the fluid resistance of the lifting check valve is larger. The check valve is of a high-pressure small caliber and usually adopts a round spherical valve clack. Conventional lifting check valves typically rely on the dead weight of a float or valve flap or the addition of a compression spring to seal.
However, the centering is generally carried out by a valve rod, so that the guide distance is short and the valve rod is easy to shake; secondly, the compression spring is easily corroded.
Disclosure of Invention
The utility model aims to provide a self-centering lifting check valve, which solves the problems in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a self-centering lift check valve, includes valve body 1, valve gap 3 and valve clack 9, its characterized in that: the valve clack 9 is provided with a centering excircle 2, and the valve body 1 is provided with a centering guide hole 10 matched with the centering excircle 2; the valve cover 3 is provided with a guide shaft 4, the guide shaft 4 is provided with symmetrically slidable sliding blocks 6, and the sliding blocks 6 are connected with connecting blocks 8 on valve clacks 9 through connecting rods 7; a compression spring 5 is arranged between the two sliding blocks 6 and the valve cover 3.
Preferably, the inner diameter of the valve cover inner hole 11 of the valve cover 3 is the same as the inner diameter of the centering guide hole 10.
Preferably, the connecting rods 7 are symmetrically arranged and are of inverted "eight" shape.
Compared with the prior art, the utility model has the beneficial effects that: firstly, the valve clack is centered, the centering area is wide, and the stability is good; secondly, sealing is formed between the valve clack and the valve cover, so that corrosion of the compression spring is avoided; thirdly, the length of the connecting rod can be adjusted according to the requirements, so that the flow of the passing fluid can be adjusted; fourthly, the valve clack is prevented from rotating.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
In the figure: 1. a valve body; 2. centering the outer circle; 3. a valve cover; 4. a guide shaft; 5. a compression spring; 6. a slide block; 7. a connecting rod; 8. a connecting block; 9. a valve flap; 10. centering the guide hole; 11. and an inner hole of the valve cover.
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, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, the present utility model provides a technical solution: the utility model provides a self-centering lift check valve, includes valve body 1, valve gap 3 and valve clack 9, its characterized in that: the valve clack 9 is provided with a centering excircle 2, and the valve body 1 is provided with a centering guide hole 10 matched with the centering excircle 2; the valve cover 3 is provided with a guide shaft 4, the guide shaft 4 is provided with symmetrically slidable sliding blocks 6, and the sliding blocks 6 are connected with connecting blocks 8 on valve clacks 9 through connecting rods 7; a compression spring 5 is arranged between the two sliding blocks 6 and the valve cover 3.
The inner diameter of the valve cover inner hole 11 of the valve cover 3 is the same as the inner diameter of the centering guide hole 10.
The connecting rods 7 are symmetrically arranged and are inverted eight-shaped.
The working principle is as follows:
when the fluid lifting valve clack 9 moves upwards, the centering excircle 2 moves upwards along the centering guide hole 10, the connecting rod 7 drives the sliding block 6 to slide to two sides along the guide shaft 4 at the moment, and meanwhile, the valve clack 9 is prevented from rotating; when the flow is reduced, the compression spring 5 pushes the sliding blocks 6 to move in opposite directions, so that the valve clack 9 is driven to move downwards, and sealing is achieved.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a self-centering lift check valve, includes valve body (1), valve gap (3) and valve clack (9), its characterized in that: the valve clack (9) is provided with a centering excircle (2), and the valve body (1) is provided with a centering guide hole (10) matched with the centering excircle (2); the valve cover (3) is provided with a guide shaft (4), the guide shaft (4) is provided with symmetrically slidable sliding blocks (6), and the sliding blocks (6) are connected with connecting blocks (8) on the valve clack (9) through connecting rods (7); a compression spring (5) is arranged between the two sliding blocks (6) and the valve cover (3).
2. The self-centering lifting check valve of claim 1, wherein: the inner diameter of the valve cover inner hole (11) of the valve cover (3) is the same as the inner diameter of the centering guide hole (10).
3. The self-centering lifting check valve of claim 1, wherein: the connecting rods (7) are symmetrically arranged and are inverted eight-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321945690.9U CN220168649U (en) | 2023-07-24 | 2023-07-24 | Self-centering lifting check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321945690.9U CN220168649U (en) | 2023-07-24 | 2023-07-24 | Self-centering lifting check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220168649U true CN220168649U (en) | 2023-12-12 |
Family
ID=89052334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321945690.9U Active CN220168649U (en) | 2023-07-24 | 2023-07-24 | Self-centering lifting check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220168649U (en) |
-
2023
- 2023-07-24 CN CN202321945690.9U patent/CN220168649U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |