CN212672486U - Slow-closing check valve - Google Patents
Slow-closing check valve Download PDFInfo
- Publication number
- CN212672486U CN212672486U CN202021173186.8U CN202021173186U CN212672486U CN 212672486 U CN212672486 U CN 212672486U CN 202021173186 U CN202021173186 U CN 202021173186U CN 212672486 U CN212672486 U CN 212672486U
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- China
- Prior art keywords
- valve
- valve body
- rod
- clack
- fixed
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- 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.)
- Expired - Fee Related
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- 230000008878 coupling Effects 0.000 claims abstract description 3
- 238000010168 coupling process Methods 0.000 claims abstract description 3
- 238000005859 coupling reaction Methods 0.000 claims abstract description 3
- 230000008676 import Effects 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 11
- 239000000956 alloy Substances 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000012530 fluid Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000002955 isolation Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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- Check Valves (AREA)
- Details Of Valves (AREA)
Abstract
The utility model discloses a slowly close formula check valve, including valve body, valve rod, valve gap, valve clack, hydro-cylinder, weight, the valve body be equipped with import, export, be equipped with sealed face in the valve body, the valve gap fixed with the valve body, valve rod and valve body rotatable coupling and one end locate in the valve body, the valve rod other end is located outside the valve body, the valve clack locate in the valve body and fixed with the valve rod in the valve body, the valve clack can closely laminate with sealed face, the weight pass through the connecting rod and the outer valve rod end of valve body is fixed, the hydro-cylinder pass through L shape base and the valve body outside is articulated fixed, the hydro-cylinder piston rod stretches out the end and articulates fixed with the outer valve rod end of valve. The utility model discloses it is steady to open and close, can reach the noiselessness during the operation, and no vibration, the fluid resistance is little, and the medium can be unblocked, has and is showing very much energy-conserving function.
Description
Technical Field
The utility model relates to the technical field of mechanical equipment, especially, relate to a slowly-closed check valve.
Background
The check valve is a valve with a circular valve clack and acts by self weight and medium pressure to block the medium from flowing backwards. It belongs to the automatic valve category, also called check valve, reflux valve or isolation valve. The valve clack motion mode is divided into lifting type and swing type. The lift check valve is similar in structure to the stop valve and only lacks a valve rod that drives the valve flap. The medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side). The valve is opened when the inlet pressure is greater than the sum of the weight of the flap and its flow resistance. Otherwise, the valve is closed when the medium flows backwards. Swing check valves have a flap that is tilted and can pivot, and operate on a similar principle to lift check valves. The check valve is commonly used as a bottom valve of a water pumping device and can prevent the backflow of water. The stop valve and the stop valve are combined for use, and the safety isolation effect can be achieved. The disadvantages are high resistance and poor sealing performance when closed.
Disclosure of Invention
The utility model relates to a solve the problem that current check valve closed to produce noise and vibration when opening easily, provide one kind and open and close steadily, can reach the noiselessness during the operation, do not have the vibration, fluid resistance is little, and the medium can be unblocked, has the slow closed check valve who shows energy-conserving function very much.
In order to achieve the above purpose, the utility model adopts the following technical scheme: slowly close formula check valve, including valve body, valve rod, valve gap, valve clack, hydro-cylinder, weight, the valve body be equipped with import, export, be equipped with sealed face in the valve body, the valve gap fixed with the valve body, valve rod and valve body rotatable coupling and one end locate in the valve body, the valve rod other end is located outside the valve body, the valve clack locate in the valve body and fixed with valve body inner valve rod, the valve clack can closely laminate with sealed face, the weight pass through the connecting rod and the outer valve rod end of valve body is fixed, the hydro-cylinder pass through L shape base and the valve body outside articulated fixed, the hydro-cylinder piston rod stretches out the end and the outer valve rod end of valve body articulates fixedly.
Preferably, a hard alloy layer is arranged on the inner sealing surface of the valve body.
Preferably, the valve cover is provided with a hanging ring.
Preferably, the valve clack comprises a valve clack body and a valve clack cover, and the valve clack cover is fixed on the valve clack body and is fixed with one end of the valve rod. The valve clack body and the inner sealing surface of the valve body are tightly attached and sealed, and the valve clack cover is fixed with the valve rod and rotates along with the valve rod.
According to the scheme, the hard alloy is welded on the sealing surface of the valve body in a surfacing mode, so that the valve body is good in sealing performance, wear-resistant and long in service life; the valve clack slow closing system has very good and reliable performance and cannot be influenced by a medium in a pipeline, so that the valve clack can be closed slowly after being closed quickly, and water hammer is prevented; because this scheme slowly closes formula check valve is hydraulic cushion, therefore it is steady to open and close, can reach noiselessness during the operation, the effect of no vibration, the scheme has adopted outer hanging hydro-cylinder, the hydro-cylinder is influenced by the medium temperature and is reduced, the reliability is higher, and it is convenient to maintain, high temperature sealing performance is higher, by the valve rod, weight and connecting rod, connect the drive belt between the hydro-cylinder seat and play the hydro-cylinder, because upward medium effort has not been had on the valve clack during closing, the self gravity of valve clack is acted on the hydro-cylinder with the flagging force and the medium reflux force of weight, carry out slowly closing valve clack, can effectual elimination medium water hammer effect during closing, thereby protect the pipe element not damaged, and then guaranteed whole life.
The utility model discloses following beneficial effect has: the valve has the advantages of stable opening and closing, no noise and vibration during working and running, small fluid resistance, smooth and unimpeded medium, and remarkable energy-saving function.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a left side view of fig. 1.
In the figure: 1 valve body, 2 valve rods, 3 valve covers, 4 valve clacks, 5 oil cylinders, 6 heavy hammers, 7 inlets, 8 outlets, 9 sealing surfaces, 10 connecting rods, 11L-shaped bases, 12 lifting rings, 13 middle gaskets, 41 valve clack bodies and 42 valve clack covers.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.
As shown in fig. 1 and 2, the slow-closing check valve includes a valve body 1, a valve rod 2, a valve cover 3, a valve flap 4, an oil cylinder 5, and a heavy hammer 6, wherein the valve body 1 is provided with an inlet 7 and an outlet 8, a sealing surface 9 is arranged in the valve body 1, the valve cover 3 is fixed with the valve body 1, the valve rod 2 is rotatably connected with the valve body 1, one end of the valve rod is arranged in the valve body 1, the other end of the valve rod 2 is arranged outside the valve body 1, the valve flap 4 is arranged in the valve body 1 and fixed with one end of the valve rod 2 in the valve body 1, the valve flap 4 can be tightly attached to the sealing surface 9, the heavy hammer 6 is fixed with the end of the valve rod 2 outside the valve body 1 through a connecting rod;
a hard alloy layer is arranged on the inner sealing surface 9 of the valve body 1;
a lifting ring 12 is arranged on the valve cover 3, and a middle gasket 13 is arranged on the contact surface of the valve cover 3 and the valve body 1;
the valve flap 4 comprises a valve flap body 41 and a valve flap cover 42, wherein the valve flap cover 42 is fixed on the valve flap body 41 and is fixed with one end of the valve rod 2.
In the specific use process, the valve clack 4 is opened and closed in the figure 1, medium flows in from the inlet 7 end (lower side) of the valve body 1 and flows out from the outlet 8 end (upper side), and when the pressure of the inlet 7 is larger than the sum of the weight of the valve clack 4 and the flow resistance of the valve clack, the check valve is opened; on the contrary, the check valve is closed when the medium flows backwards, and when the check valve is closed, because the valve clack 4 does not have upward medium acting force, the self-gravity of the valve clack 4 plus the drooping force of the heavy hammer 6 and the medium backflow force act on the oil cylinder 5 to slowly close the valve clack 4, and the medium water hammer effect can be effectively eliminated when the check valve is closed;
the slow closing system of the valve clack 4 has good and reliable performance, and cannot be influenced by a medium in a pipeline, so that the valve clack 4 generates a slow closing effect, and water hammer is prevented; the hydraulic buffer is stable in opening and closing, and the effects of no noise and no vibration can be achieved during operation.
The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.
Claims (4)
1. The utility model provides a slowly close formula check valve, includes valve body, valve rod, valve gap, valve clack, hydro-cylinder, weight, its characterized in that: the valve body be equipped with import, export, be equipped with sealed face in the valve body, valve gap and valve body fixed, valve rod and valve body rotatable coupling and one end locate in the valve body, the valve rod other end is located outside the valve body, the valve clack locate in the valve body and with valve body internal valve rod fixed, the valve clack can closely laminate with sealed face, the weight pass through the connecting rod and the outer valve rod end of valve body is fixed, the hydro-cylinder pass through L shape base and the valve body outside is articulated fixed, the hydro-cylinder piston rod stretches out the end and articulates fixedly with the outer valve rod end of valve body.
2. The slow closing check valve of claim 1, wherein: and a surfacing hard alloy layer is arranged on the inner sealing surface of the valve body.
3. The slow closing check valve of claim 1, wherein: the valve cover is provided with a hanging ring, and a middle gasket is arranged on the contact surface of the valve cover and the valve body.
4. The slow closing check valve of claim 1, wherein: the valve clack comprises a valve clack body and a valve clack cover, wherein the valve clack cover is fixed on the valve clack body and is fixed with one end of the valve rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021173186.8U CN212672486U (en) | 2020-06-23 | 2020-06-23 | Slow-closing check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021173186.8U CN212672486U (en) | 2020-06-23 | 2020-06-23 | Slow-closing check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212672486U true CN212672486U (en) | 2021-03-09 |
Family
ID=74817869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021173186.8U Expired - Fee Related CN212672486U (en) | 2020-06-23 | 2020-06-23 | Slow-closing check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212672486U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114838168A (en) * | 2022-03-18 | 2022-08-02 | 荆门美中美阀门有限公司 | Butterfly slow-closing check valve |
-
2020
- 2020-06-23 CN CN202021173186.8U patent/CN212672486U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114838168A (en) * | 2022-03-18 | 2022-08-02 | 荆门美中美阀门有限公司 | Butterfly slow-closing check valve |
| CN114838168B (en) * | 2022-03-18 | 2024-05-03 | 荆门美中美阀门有限公司 | Butterfly slow-closing check valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210309 |