CN214889099U - Slow-closing check valve - Google Patents
Slow-closing check valve Download PDFInfo
- Publication number
- CN214889099U CN214889099U CN202121032600.8U CN202121032600U CN214889099U CN 214889099 U CN214889099 U CN 214889099U CN 202121032600 U CN202121032600 U CN 202121032600U CN 214889099 U CN214889099 U CN 214889099U
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- China
- Prior art keywords
- valve
- pipeline
- core
- baffle
- rod
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- Expired - Fee Related
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Abstract
The utility model provides a slow-closure check valve, which comprises a valve body, a valve seat, case and valve rod, the valve body is the tubular structure of both ends opening form, the disk seat sets up for coaxial line between infundibulate and disk seat and the valve body, the middle part of disk seat is equipped with the delivery port, coaxial line setting and valve rod pass the delivery port between valve rod and the valve body, the case is located disk seat towards conical surface's one side and case and includes first case and second case, first case is hemisphere type and first case's spherical surface towards disk seat one side, second case and the equal slidable mounting of first case are on the valve rod, be connected between valve rod and the valve body, be fixed with first baffle and second baffle on the valve rod, the cover has first spring on the valve rod. The purpose of 'quick closing and slow closing' of the valve is achieved when the valve is used, the using effect of the valve is further improved, collision of a valve core when the valve is used is reduced, and therefore the service life of the valve is prolonged.
Description
Technical Field
The utility model relates to a valve equipment technical field especially relates to a slowly close check valve.
Background
The slow-closing check valve is also called a check valve and is used for preventing media in the pipeline from flowing backwards. The opening and closing piece is opened or closed by the medium flow and force to prevent the medium from flowing backwards. The check valve belongs to the automatic valve class, is mainly used on the pipeline of medium one-way flow, only allows medium to flow to one direction to prevent the accident. The valve of this type should be generally installed horizontally in the pipeline. But present slow type valve of closing is difficult to accomplish fast and closes slowly, and the valve plate collides easily with the disk seat when closing simultaneously to the life of valve has been reduced, and adopts elastic slow-closing mechanism when current valve uses, thereby the valve plate can not carry out effectual non return to the fluid when leading to using.
SUMMERY OF THE UTILITY MODEL
To the above situation, for overcoming the defect of prior art, the utility model aims at providing a slow-closure check valve, can realize the fast-closing slow-closure of valve, can also realize opening fast of valve simultaneously, improve the life of valve.
The slow-closing check valve comprises a valve body, a valve seat, a valve core and a valve rod, wherein the valve body is of a tubular structure with two open ends, the valve seat is funnel-shaped, the valve seat and the valve body are coaxially arranged, a water outlet is formed in the middle of the valve seat, the valve rod and the valve body are coaxially arranged, the valve rod penetrates through the water outlet, the valve core is positioned on one side, facing a conical surface, of the valve seat and comprises a first valve core and a second valve core, the first valve core is hemispherical, the spherical surface of the first valve core faces one side of the valve seat, the second valve core is cylindrical, the second valve core is fixedly connected with the first valve core in a coaxial line mode, the second valve core and the first valve core are both slidably mounted on the valve rod, the valve rod is connected with the valve body, a first baffle plate and a second baffle plate are fixed on the valve rod, and the first baffle plate and the second baffle plate are respectively connected with two sides of the valve core, the valve rod is sleeved with a first spring, and the first spring is positioned between the first baffle plate and the second valve core.
Preferably, a third baffle is slidably mounted on the valve rod, a second spring is arranged between the third baffle and the second baffle, and two ends of the second spring are fixedly connected with the third baffle and the second baffle respectively.
Preferably, a piston cylinder is arranged inside the valve body, one end, far away from the second baffle, of the valve rod is located inside the piston cylinder, a piston is slidably mounted inside the piston cylinder, the valve rod is fixedly connected with the piston, a first pipeline and a second pipeline are communicated with the piston cylinder, the communicating positions of the first pipeline and the second pipeline with the piston cylinder are located on two sides of the piston, the first pipeline and the second pipeline are communicated with the valve body, and the communicating positions of the first pipeline and the second pipeline with the valve body are located on two sides of the valve seat respectively.
Preferably, a sewage draining hole is formed in the valve body, and a bolt is matched with the sewage draining hole in a threaded mode.
The utility model has the advantages that: can make the valve realize the purpose of "closing slowly soon" when using, and then improve the result of use of valve, reduce the collision of case when the valve uses to improve the life of valve, improve the stability of valve when ending, further improvement valve's result of use.
Drawings
Fig. 1 is a schematic structural diagram of the whole shaft side of the present invention.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1, the slow-closing check valve comprises a valve body 1, a valve seat 4, a valve core and a valve rod 7, and is characterized in that the valve body 1 is of a tubular structure with two open ends, the valve seat 4 is funnel-shaped, the valve seat 4 and the valve body 1 are coaxially arranged, a water outlet 10 is arranged in the middle of the valve seat 4, the valve rod 7 and the valve body 1 are coaxially arranged, the valve rod 7 penetrates through the water outlet 10, the valve core is positioned on one side of the valve seat 4 facing a conical surface and comprises a first valve core 12 and a second valve core 13, the first valve core 12 is hemispherical, the spherical surface of the first valve core 12 faces one side of the valve seat 4, the second valve core 13 is cylindrical, the second valve core 13 and the first valve core 12 are coaxially and fixedly connected, the second valve core 13 and the first valve core 12 are slidably mounted on the valve rod 7, the valve rod 7 and the valve body 1 are connected, a first baffle plate and a second baffle plate 15 are fixed on the valve rod 7, the first baffle plate and the second baffle plate 15 are respectively arranged at two sides of the valve core, the valve rod 7 is sleeved with a first spring 14, and the first spring 14 is positioned between the first baffle plate and the second valve core 13.
When the device is used, the device is firstly placed at a required position, fluid circulates through the valve body 1, when the fluid is in a positive flow direction, the valve core is separated from the valve body 1, thereby realizing the circulation of the fluid, when the fluid has the condition of reverse flow, the second valve core 13 is close to the second baffle 15, the reverse fluid pushes the valve core to move, the valve core moves on the valve rod 7 rapidly, the diameter of the first valve core 12 is smaller than that of the water outlet 10, the first valve core 12 firstly passes through the water outlet 10, thereby reducing the flow of reverse circulation, realizing that the valve rapidly reduces the reverse flow, the valve core continuously moves, the first valve core 12 is contacted with the first spring 14, thereby avoiding the valve core directly colliding with the valve seat 4, realizing the slow closing of the valve, therefore, the purpose of quick closing and slow closing of the valve is achieved, the using effect of the valve is improved, and the service life of the valve is prolonged.
A third baffle 16 is slidably mounted on the valve rod 7, a second spring 17 is arranged between the third baffle 16 and the second baffle 15, and two ends of the second spring 17 are fixedly connected with the third baffle 16 and the second baffle 15 respectively.
When fluid flows in the valve body 1 in the forward direction, in order to avoid collision between the valve core fast moving and the second baffle 15, the force is removed from the valve core through the second spring 17 and the third baffle 16, so that the collision is avoided, and the service life of the valve is further prolonged.
The valve comprises a valve body 1 and is characterized in that a piston cylinder 6 is arranged in the valve body 1, one end, far away from a second baffle 15, of a valve rod 7 is positioned in the piston cylinder 6, a piston 8 is arranged in the piston cylinder 6 in a sliding mode, the valve rod 7 is fixedly connected with the piston 8, a piston 8 is arranged in the piston cylinder 6 in a sliding mode, the piston cylinder 6 is communicated with a first pipeline 9 and a second pipeline 5, the communicating positions of the first pipeline 9 and the second pipeline 5 and the piston cylinder 6 are positioned on two sides of the piston 8, the first pipeline 9 and the second pipeline 5 are communicated with the valve body 1, and the communicating positions of the first pipeline 9 and the second pipeline 5 and the valve body 1 are respectively positioned on two sides of a valve seat 4.
In order to avoid the stability of the valve core when the fluid is blocked, when the valve core is used, when the forward flow of the fluid stops, the pressure of the first pipeline 9 is reduced, the pressure of the second pipeline 5 is increased, the piston 8 is pushed to move towards the side away from the valve seat 4, the pressure of the second pipeline 5 continuously applies pressure to the piston 8, so that the sealing effect between the valve core and the valve seat 4 is improved, meanwhile, if the pressure inside the second pipeline 5 is not reduced, the valve core and the valve seat 4 are always in an effective sealing state, so that the condition that the leakage occurs between the valve core and the valve seat 4 due to the adoption of an elastic piece is avoided, the stopping effect of the fluid is further improved, when the fluid flows in the forward direction, the pressure of the first pipeline 9 is greater than that of the second pipeline 5, so that the piston 8 resets, and the forward flow of the fluid is realized.
The valve body 1 is provided with a sewage discharge hole 2, and a bolt 3 is in threaded fit with the sewage discharge hole 2.
Through setting up blowoff hole 2, can realize discharging the inside debris of valve body 1 through blowoff hole 2, improve the sealed effect between case and the disk seat 4.
The utility model has the advantages that: can make the valve realize the purpose of "closing slowly soon" when using, and then improve the result of use of valve, reduce the collision of case when the valve uses to improve the life of valve, improve the stability of valve when ending, further improvement valve's result of use.
The above-mentioned embodiments are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design concept of the present invention should be included in the protection scope defined by the claims of the present invention.
Claims (4)
1. A slow-closing check valve comprises a valve body (1), a valve seat (4), a valve core and a valve rod (7), and is characterized in that the valve body (1) is of a tubular structure with two open ends, the valve seat (4) is funnel-shaped, the valve seat (4) and the valve body (1) are coaxially arranged, a water outlet (10) is formed in the middle of the valve seat (4), the valve rod (7) and the valve body (1) are coaxially arranged, the valve rod (7) penetrates through the water outlet (10), the valve core is positioned on one side, facing a conical surface, of the valve seat (4) and comprises a first valve core (12) and a second valve core (13), the first valve core (12) is hemispherical, the spherical surface of the first valve core (12) faces one side of the valve seat (4), the second valve core (13) is cylindrical, and the second valve core (13) is fixedly connected with the first valve core (12) in a coaxial manner, the valve is characterized in that the second valve core (13) and the first valve core (12) are both slidably mounted on the valve rod (7), the valve rod (7) is connected with the valve body (1), a first baffle plate and a second baffle plate (15) are fixed on the valve rod (7), the first baffle plate and the second baffle plate (15) are respectively connected with two sides of the valve core, a first spring (14) is sleeved on the valve rod (7), and the first spring (14) is located between the first baffle plate and the second valve core (13).
2. A slow-closing check valve as claimed in claim 1, characterized in that a third baffle (16) is slidably mounted on the valve rod (7), a second spring (17) is arranged between the third baffle (16) and the second baffle (15), and two ends of the second spring (17) are fixedly connected with the third baffle (16) and the second baffle (15), respectively.
3. Slow-closure non-return valve according to claim 1, characterized in that a piston cylinder (6) is arranged inside said valve body (1), the piston cylinder (6) is connected with the valve body (1), one end of the valve rod (7) far away from the second baffle plate (15) is positioned in the piston cylinder (6), a piston (8) is arranged in the piston cylinder (6) in a sliding way, a valve rod (7) is fixedly connected with the piston (8), the piston cylinder (6) is communicated with a first pipeline (9) and a second pipeline (5), the communication positions of the first pipeline (9) and the second pipeline (5) and the piston cylinder (6) are positioned at two sides of the piston (8), the first pipeline (9) and the second pipeline (5) are communicated with the valve body (1), and the communicated parts of the first pipeline (9) and the second pipeline (5) and the valve body (1) are respectively positioned at two sides of the valve seat (4).
4. The slow-closing check valve as claimed in claim 1, wherein a blow-off hole (2) is formed in the valve body (1), and a bolt (3) is in threaded fit with the blow-off hole (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121032600.8U CN214889099U (en) | 2021-05-14 | 2021-05-14 | Slow-closing check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121032600.8U CN214889099U (en) | 2021-05-14 | 2021-05-14 | Slow-closing check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214889099U true CN214889099U (en) | 2021-11-26 |
Family
ID=78890801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121032600.8U Expired - Fee Related CN214889099U (en) | 2021-05-14 | 2021-05-14 | Slow-closing check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214889099U (en) |
-
2021
- 2021-05-14 CN CN202121032600.8U patent/CN214889099U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211126 |