CN219866442U - Slowly-closed check valve - Google Patents
Slowly-closed check valve Download PDFInfo
- Publication number
- CN219866442U CN219866442U CN202321302348.7U CN202321302348U CN219866442U CN 219866442 U CN219866442 U CN 219866442U CN 202321302348 U CN202321302348 U CN 202321302348U CN 219866442 U CN219866442 U CN 219866442U
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- CN
- China
- Prior art keywords
- water inlet
- mounting
- valve
- inlet pipe
- valve body
- 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 78
- 238000005192 partition Methods 0.000 claims abstract description 11
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims 4
- 239000010865 sewage Substances 0.000 claims 2
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 7
- 239000012535 impurity Substances 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
Landscapes
- Check Valves (AREA)
Abstract
The utility model relates to the technical field of check valves, in particular to a slow-closing check valve which comprises a water inlet pipe, a valve body, a water outlet pipe, a mounting disc, a mounting cylinder, a piston rod, a valve clack, a partition plate, a piston block, a cover plate, a spring, a connecting rod and an end head, wherein the water inlet pipe is connected with the valve body through the water outlet pipe; the water inlet pipe and the water outlet pipe are connected with the valve body, and the mounting disc is respectively connected with the water inlet pipe and the water outlet pipe; the baffle is connected with the valve body, the mounting cylinder is connected with the valve body, the piston rod is connected with the mounting cylinder in a sliding manner, and the valve clack is connected with the piston rod; the mounting cylinder is internally provided with an oil bin, the piston block is connected with the piston rod and slides in the oil bin, and the mounting cylinder is internally provided with a mounting plate and an oil storage bin; the mounting plate is provided with a through hole b, the connecting rod is connected with the mounting plate in a sliding manner, the cover plate is connected with the connecting rod, the end is connected with the connecting rod, and the spring is connected with the mounting plate and the end. According to the utility model, the valve clack is slowly closed by slowing down the sliding speed of the piston rod in the mounting cylinder, so that the valve clack and the valve body are further protected, and the service life of the valve clack is prolonged.
Description
Technical Field
The utility model relates to the technical field of check valves, in particular to a slow-closing check valve.
Background
The check valve is a valve with a circular valve clack as an opening and closing part and can stop the medium from flowing backwards by the action of the self weight and the medium pressure. Belongs to automatic valves, which are also called check valves, one-way valves, reflux valves or isolation valves. The valve is opened due to gravity when water flows, but the valve is closed rapidly after water stops flowing, so that water hammer phenomenon is caused, the valve is damaged, and the frequency of disassembly and repair of the valve is increased.
Chinese patent publication No. CN212338298U discloses a check valve comprising a valve body, a valve flap, a valve seat and a valve cover; two sides of the valve body are respectively provided with a water inlet channel and a water outlet channel; the height of the water inlet channel is lower than that of the water outlet channel; the valve seat is arranged between the water inlet channel and the water outlet channel; the valve cover is arranged at the upper part of the valve body and is used for blocking the valve body; the valve clack is in an inverted T shape and is arranged between the valve seat and the valve cover, and the valve clack is tightly pressed on the valve seat and is used for controlling the opening and closing states of the water inlet channel and the water outlet channel; wherein, a through threaded hole is arranged in the middle of the valve cover; the bolt is arranged on the upper part of the valve cover and is in threaded connection with the threaded hole; the upper part of the valve clack is arranged in the threaded hole; and an elastic telescopic column is arranged above two sides of the valve clack respectively, and the upper part and the lower part of the elastic telescopic column are connected with the valve cover and the valve clack respectively.
However, the technical scheme has the following defects: the valve clack in the check valve does not have buffering in the up-and-down opening and closing process, the valve clack needs to be frequently impacted on the valve seat for closing, the service life of the valve clack and the buffering pad is shorter, and meanwhile, the valve clack is damaged to make the closing incomplete.
Disclosure of Invention
The utility model aims to solve the problems in the background art and provides a slow-closing check valve.
The technical scheme of the utility model is as follows: a slow-closing check valve comprises a water inlet pipe, a valve body, a water outlet pipe, a mounting disc, a mounting cylinder, a piston rod, a valve clack, a partition plate, a piston block, a cover plate, a spring, a connecting rod and an end head;
the water inlet pipe is connected with the water inlet port of the valve body, one end of the water outlet pipe is connected with the water outlet port of the valve body, the water inlet pipe and the water outlet pipe are communicated with the interior of the valve body, two mounting plates are arranged, the two mounting plates are respectively connected with the ends of the water inlet pipe and the water outlet pipe, and the mounting plates are respectively coaxially distributed with the water inlet pipe and the water outlet pipe;
the baffle is connected with the inner wall of the valve body, the baffle is provided with a through hole a, the mounting cylinder is connected with the valve body, the mounting cylinder is of a hollow structure, the piston rod is connected with the mounting cylinder in a sliding manner, and the valve clack is connected with one end of the piston rod, which is far away from the mounting cylinder;
the mounting cylinder is internally provided with an oil bin, the piston block is connected with the end head of the piston rod, the piston block slides in the oil bin, the outer peripheral surface of the piston block presses the inner wall of the oil bin, and the mounting cylinder is internally provided with a mounting plate and an oil storage bin;
be equipped with a plurality of through-holes b on the mounting panel, a plurality of through-holes b evenly distributed on the mounting panel, oil storehouse and oil storage storehouse are through a plurality of through-holes b intercommunication, connecting rod sliding connection mounting panel, connecting rod and mounting panel coaxial distribution, the one end of connecting rod is connected to the apron, the other end of connecting rod is connected to the end, the outside at the connecting rod is established to the spring housing, mounting panel and end are connected at the both ends of spring.
Preferably, the lower end of the valve clack is provided with a bump, the bump is connected with the through hole a in a matching way, and the peripheral surface of the bump is provided with a sealing ring.
Preferably, a filter plate is arranged in the water inlet pipe and is connected with the inner wall of the water inlet pipe.
Preferably, the device also comprises a cover body and a drain pipe;
the drain pipe is connected with the water inlet pipe, and the cover body is connected with the other end of the drain pipe.
Preferably, the outside of the piston rod is provided with an elastic sleeve, two ends of the elastic sleeve are connected with the upper end surfaces of the mounting cylinder and the valve clack, and the elastic sleeve is sleeved on the outside of the piston rod.
Compared with the prior art, the technical scheme provided by the utility model has the following beneficial technical effects:
in the embodiment, after the pressure in the water inlet pipe reaches a certain value, the liquid in the water inlet pipe extrudes the valve clack, the valve clack is propped open, the liquid enters the water outlet pipe, the piston rod slides in the oil bin in the mounting cylinder, the piston block extrudes the oil from the through hole b into the oil storage bin, the cover plate slides on the mounting plate, the spring is compressed, the oil storage bin is filled with inert gas and oil, and the gas can be compressed; when the pressure of the liquid in the water inlet pipe is reduced and the pressure in the water outlet pipe is increased, the valve clack is pressed downwards against the end face of the partition board, so that the through hole a is further blocked; the piston block slides in the oil bin, oil in the oil storage bin enters the oil bin through the through hole b, the cover plate is tightly pressed on the mounting plate, the cover plate blocks a part of the through hole b, the oil passing speed is reduced, the sliding speed of the piston rod in the oil bin is further reduced, and the further valve clack can be slowly tightly pressed on the partition plate; the filter plate is arranged in the water inlet pipe, so that impurities are prevented from entering the valve body, and the valve body is prevented from being damaged; according to the utility model, the valve clack is slowly closed by slowing down the sliding speed of the piston rod in the mounting cylinder, so that the valve clack and the valve body are further protected, and the service life of the valve clack is prolonged.
Drawings
Fig. 1 is a perspective view of an embodiment of the present utility model.
Fig. 2 is a schematic structural view of a slowly-closing check valve according to the present utility model.
Fig. 3 is a schematic view of the internal structure of the mounting cylinder in the slowly-closing check valve according to the present utility model.
Reference numerals: 1. a water inlet pipe; 2. a valve body; 3. a water outlet pipe; 4. a mounting plate; 5. a mounting cylinder; 6. a cover body; 7. a blow-down pipe; 8. an oil bin; 9. a filter plate; 10. a piston rod; 11. a valve flap; 12. a partition plate; 13. an oil storage bin; 14. a piston block; 15. a cover plate; 16. a through hole b; 17. a spring; 18. a connecting rod; 19. an end head; 20. and a bump.
Detailed Description
Example 1
As shown in fig. 1-3, the slow-closing check valve provided by the utility model comprises a water inlet pipe 1, a valve body 2, a water outlet pipe 3, a mounting disc 4, a mounting cylinder 5, a piston rod 10, a valve clack 11, a partition plate 12, a piston block 14, a cover plate 15, a spring 17, a connecting rod 18 and an end head 19;
the water inlet pipe 1 is connected with the water inlet port of the valve body 2, one end of the water outlet pipe 3 is connected with the water outlet port of the valve body 2, the water inlet pipe 1 and the water outlet pipe 3 are communicated with the interior of the valve body 2, two mounting plates 4 are arranged, the two mounting plates 4 are respectively connected with the ends of the water inlet pipe 1 and the water outlet pipe 3, and the mounting plates 4 are respectively coaxially distributed with the water inlet pipe 1 and the water outlet pipe 3;
the baffle 12 is connected with the inner wall of the valve body 2, a through hole a is formed in the baffle 12, the mounting cylinder 5 is connected with the valve body 2, the mounting cylinder 5 is of a hollow structure, the piston rod 10 is in sliding connection with the mounting cylinder 5, and the valve clack 11 is connected with one end of the piston rod 10, which is far away from the mounting cylinder 5;
further, an elastic sleeve is arranged on the outer side of the piston rod 10, two ends of the elastic sleeve are connected with the upper end surfaces of the mounting cylinder 5 and the valve clack 11, and the elastic sleeve is sleeved on the outer side of the piston rod 10;
the oil bin 8 is arranged in the mounting cylinder 5, the piston block 14 is connected with the end head of the piston rod 10, the piston block 14 slides in the oil bin 8, the outer peripheral surface of the piston block 14 presses the inner wall of the oil bin 8, and the mounting cylinder 5 is internally provided with the mounting plate and the oil storage bin 13;
the mounting plate is provided with a plurality of through holes b16, the through holes b16 are uniformly distributed on the mounting plate, the oil bin 8 and the oil storage bin 13 are communicated through the through holes b16, the connecting rod 18 is connected with the mounting plate in a sliding mode, the connecting rod 18 and the mounting plate are coaxially distributed, the cover plate 15 is connected with one end of the connecting rod 18, the end 19 is connected with the other end of the connecting rod 18, the spring 17 is sleeved on the outer side of the connecting rod 18, and two ends of the spring 17 are connected with the mounting plate and the end 19.
Example two
As shown in fig. 1-2, in the embodiment of the utility model, compared with the first embodiment, the lower end of the valve clack 11 is provided with the bump 20, the bump 20 is connected with the through hole a in a matching way, the outer circumferential surface of the bump 20 is provided with the sealing ring, the bump 20 is embedded into the through hole a, and the baffle 12 and the bump 20 compress the sealing ring.
Example III
As shown in fig. 1-2, compared with the first embodiment, the present embodiment of the present utility model further includes a cover 6 and a drain pipe 7;
a filter plate 9 is arranged in the water inlet pipe 1, and the filter plate 9 is connected with the inner wall of the water inlet pipe 1;
the drain pipe 7 is connected with the water inlet pipe 1, and the cover body 6 is connected with the other end of the drain pipe 7; the filter plate 9 blocks impurities in the liquid outside the valve body 2, and the impurities can be discharged through the drain pipe 7.
In summary, in this embodiment, when the pressure in the water inlet pipe 1 reaches a certain value, the liquid in the water inlet pipe 1 presses the valve clack 11 to push the valve clack 11 open, the liquid enters the water outlet pipe 3, the piston rod 10 slides in the oil bin 8 in the mounting cylinder 5, the piston block 14 presses the oil from the through hole b16 to the oil storage bin 13, the cover plate 15 slides on the mounting plate, the spring 17 is compressed, the oil storage bin 13 is filled with inert gas and oil, and the gas can be compressed; when the pressure of the liquid in the water inlet pipe 1 is reduced and the pressure in the water outlet pipe 3 is increased, the valve clack 11 is pressed downwards to the end surface of the partition plate 12, so that the through hole a is further blocked; the piston block 14 slides in the oil bin 8, oil in the oil storage bin 13 enters the oil bin 8 through the through hole b16, the cover plate 15 is tightly pressed on the mounting plate, the cover plate 15 blocks a part of the through hole b16, the oil passing speed is reduced, the sliding speed of the piston rod 10 in the oil bin 8 is further reduced, and the further valve clack 11 can be slowly tightly pressed on the partition plate 12; the filter plate 9 is arranged in the water inlet pipe 1 to prevent impurities from entering the valve body 2 and prevent the valve body 2 from being damaged; according to the utility model, the valve clack 11 is slowly closed by slowing down the sliding speed of the piston rod 10 in the mounting cylinder 5, so that the valve clack 11 and the valve body 2 are further protected, and the service life of the valve clack 11 is prolonged.
The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model.
Claims (5)
1. The slow-closing check valve is characterized by comprising a water inlet pipe (1), a valve body (2), a water outlet pipe (3), a mounting disc (4), a mounting cylinder (5), a piston rod (10), a valve clack (11), a partition plate (12), a piston block (14), a cover plate (15), a spring (17), a connecting rod (18) and an end head (19);
the water inlet pipe (1) is connected with a water inlet port of the valve body (2), one end of the water outlet pipe (3) is connected with a water outlet port of the valve body (2), the water inlet pipe (1) and the water outlet pipe (3) are communicated with the inside of the valve body (2), two mounting plates (4) are arranged, the two mounting plates (4) are respectively connected with the ends of the water inlet pipe (1) and the water outlet pipe (3), and the mounting plates (4) are respectively coaxially distributed with the water inlet pipe (1) and the water outlet pipe (3);
the partition board (12) is connected with the inner wall of the valve body (2), the partition board (12) is provided with a through hole a, the installation cylinder (5) is connected with the valve body (2), the installation cylinder (5) is of a hollow structure, the piston rod (10) is connected with the installation cylinder (5) in a sliding manner, and the valve clack (11) is connected with one end of the piston rod (10) far away from the installation cylinder (5);
an oil bin (8) is arranged in the mounting cylinder (5), a piston block (14) is connected with the end head of the piston rod (10), the piston block (14) slides in the oil bin (8), the outer peripheral surface of the piston block (14) presses the inner wall of the oil bin (8), and a mounting plate and an oil storage bin (13) are arranged in the mounting cylinder (5);
be equipped with a plurality of through-holes b (16) on the mounting panel, a plurality of through-holes b (16) evenly distributed on the mounting panel, oil storehouse (8) and oil storage storehouse (13) are through a plurality of through-holes b (16) intercommunication, connecting rod (18) sliding connection mounting panel, connecting rod (18) and mounting panel coaxial distribution, the one end of connecting rod (18) is connected to apron (15), the other end of connecting rod (18) is connected to end (19), the outside at connecting rod (18) is established to spring (17) cover, mounting panel and end (19) are connected at the both ends of spring (17).
2. The slow-closing check valve according to claim 1, wherein the lower end of the valve flap (11) is provided with a bump (20), the bump (20) is connected with the through hole a in a matching way, and the peripheral surface of the bump (20) is provided with a sealing ring.
3. A slow closing check valve according to claim 1, characterized in that a filter plate (9) is arranged in the water inlet pipe (1), the filter plate (9) being connected to the inner wall of the water inlet pipe (1).
4. A slow closing check valve according to claim 1, further comprising a cover (6) and a drain pipe (7);
the sewage drain pipe (7) is connected with the water inlet pipe (1), and the cover body (6) is connected with the other end of the sewage drain pipe (7).
5. The slow-closing check valve according to claim 1, wherein an elastic sleeve is arranged on the outer side of the piston rod (10), two ends of the elastic sleeve are connected with the upper end surfaces of the mounting cylinder (5) and the valve clack (11), and the elastic sleeve is sleeved on the outer side of the piston rod (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321302348.7U CN219866442U (en) | 2023-05-25 | 2023-05-25 | Slowly-closed check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321302348.7U CN219866442U (en) | 2023-05-25 | 2023-05-25 | Slowly-closed check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219866442U true CN219866442U (en) | 2023-10-20 |
Family
ID=88331624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321302348.7U Active CN219866442U (en) | 2023-05-25 | 2023-05-25 | Slowly-closed check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219866442U (en) |
-
2023
- 2023-05-25 CN CN202321302348.7U patent/CN219866442U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |