CN214743559U - Full forged steel down-rotation type swing check valve - Google Patents
Full forged steel down-rotation type swing check valve Download PDFInfo
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- CN214743559U CN214743559U CN202121375435.6U CN202121375435U CN214743559U CN 214743559 U CN214743559 U CN 214743559U CN 202121375435 U CN202121375435 U CN 202121375435U CN 214743559 U CN214743559 U CN 214743559U
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Abstract
The utility model relates to a full forged steel formula of spiraling is opened check valve soon down. The valve comprises a valve body, wherein the valve body is provided with a cavity, the valve body is provided with an inlet flow passage and an outlet flow passage which are communicated with the cavity, a step is arranged at the outlet end of the inlet flow passage in the cavity of the valve body, a first sealing surface is arranged on the step surface, a rocker is synchronously and rotatably arranged at the lower part of the cavity of the valve body through a rotating shaft, a valve clack is arranged on the rocker, a second sealing surface which is in sealing fit with the first sealing surface is arranged on the valve clack, and a torsion spring is arranged on the rotating shaft; the valve flap has an open position that rotates downward under the impact of the media to open the inlet channel and a closed position that rotates upward under the action of the media and the torsion spring to seal the inlet channel. The medium does not need to overcome the gravity of the valve clack, and only needs to overcome the force of the torsion spring and the friction force of the rotating shaft to open the valve clack, so that the valve clack is suitable for small flow and large flow, and the universality is improved. But also the sealing reliability of the valve clack is increased under the action of the medium and the torsion spring.
Description
Technical Field
The utility model relates to a valve field, concretely relates to full forged steel formula swing check valve of spiraling down.
Background
The swing check valve is also called a one-way valve or a check valve, is mainly used for a pipeline in which media flow in one direction, only allows the media to flow in one direction, opens the valve clack by the force of the flowing media, and seals with the valve seat by the gravity of the valve clack. Because traditional swing check valve's valve body adopts the casting valve body more, but the casting valve body easily exists defects such as sand hole, gas pocket, crackle, and the valve body of current swing check valve adopts forged steel valve body mostly. However, the existing swing check valves all adopt an upward-rotation opening mode, and as disclosed in the chinese patent application with application publication No. CN 112833225 a, a swing check valve includes a valve body having an inlet flow passage and an outlet flow passage, a valve seat is disposed at an outlet end of the inlet flow passage in the valve body, a valve flap hermetically fitted with the valve seat is disposed in the valve body, a rotating shaft is rotatably disposed on the valve body, and the valve flap is connected to the rotating shaft through a swing rod, i.e., a rocker. The valve flap is opened by the impact of the medium and closed by the gravity of the valve flap. The end face of the valve seat facing the valve clack needs to be made into an inclined plane, so that the valve clack is convenient to seal with the valve seat under the gravity. However, the swing check valve of this structure has the following disadvantages: firstly, the opening of valve clack can only open up less angle, can't open completely, leads to the flow of medium little under the same size. Secondly, rely on gravity to realize valve clack and valve seat sealed, the sealed effect is unreliable, especially when having the granule in the face of the medium. Thirdly, the swing check valve of the upper swing type is sealed by means of gravity, so that the whole valve clack is heavy in weight, and at the moment, if a torsion spring is arranged on a rotating shaft, the opening force of the valve clack is large, the valve clack is not suitable for a medium with small flow, and the universality is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a full forged steel formula swing check valve of spiraling down to solve the valve clack opening angle that exists among the prior art little, sealed effect unreliable and the poor problem of commonality.
In order to achieve the above object, the utility model discloses a full forged steel underspin formula check valve that opens soon adopts following technical scheme: a full forged steel downward-rotation type swing check valve comprises a valve body, wherein the valve body is provided with a cavity, the valve body is provided with an inlet flow passage and an outlet flow passage which are communicated with the cavity, a step is arranged at the outlet end of the inlet flow passage in the cavity of the valve body, a first sealing surface is arranged on the surface of the step, a rocker is synchronously and rotatably arranged at the lower part of the cavity of the valve body through a rotating shaft, a valve clack is arranged on the rocker, a second sealing surface which is in sealing fit with the first sealing surface is arranged on the valve clack, and a torsion spring is arranged on the rotating shaft; the valve flap has an open position that rotates downward under the impact of the media to open the inlet channel and a closed position that rotates upward under the action of the torsion spring to seal the inlet channel.
The valve body adopts a forged steel valve body, the swing check valve further comprises an inlet flange and an outlet flange which are made of forged steel, the inlet flange and the outlet flange are welded with the valve body, an inlet flow passage is formed in an inner cavity of the inlet flange, and an outlet flow passage is formed in an inner cavity of the outlet flange.
And a bypass pipeline communicated with the inlet runner is arranged on the inlet flange.
A guide hole is formed in the step surface inside the cavity of the valve body, a guide rod and a pressure spring are arranged in the guide hole, and a pressure plate for jacking the valve clack is arranged at the end part of the guide rod outside the guide hole.
The import department of guiding hole is provided with the separation blade, and the end of inserting of guide bar is provided with flexible bayonet lock, and the separation blade is the annular separation blade that inner bore diameter is the same with the aperture of guiding hole, is provided with the breach that supplies the elastic pin to pass through on the inner wall of separation blade, is provided with the mounting groove that supplies the elastic pin to follow guiding direction movable mounting of guide bar on the pore wall of guiding hole, and the breach on mounting groove and the separation blade sets up by staggering.
The utility model has the advantages that: the valve clack rotates downwards to be opened under the impact force of the medium, the closing and sealing are realized under the action of the medium and the torsion spring, the valve clack can be opened at a larger angle, and the sealing reliability of the valve clack is improved under the action of the torsion spring. The medium does not need to overcome the gravity of the valve clack, and only needs to overcome the force of the torsion spring and the friction force of the rotating shaft to open the valve clack, so that the valve clack is suitable for small flow and large flow, and the universality is improved. In addition, a special valve seat is not required to be arranged, a step surface is arranged in the valve body to serve as the valve seat, the structure is simple, and the cost is reduced.
Drawings
FIG. 1 is a schematic structural view of an embodiment of a fully forged steel swing check valve of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
fig. 3 is a schematic structural view of the baffle plate.
Detailed Description
The utility model discloses an embodiment of check valve is opened soon to formula of revolving down of full forged steel, as shown in fig. 1-3, including valve body 1, the valve body has cavity 2, and the valve body has inlet flow channel 4 and outlet flow channel 6 with the cavity intercommunication. The valve body adopts a forged steel valve body, the swing check valve further comprises an inlet flange 3 and an outlet flange 5 which are made of forged steel, the inlet flange and the outlet flange are welded with the valve body, an inlet flow passage is formed in an inner cavity of the inlet flange, and an outlet flow passage is formed in an inner cavity of the outlet flange.
A step 23 is arranged at the outlet end of the inlet flow passage in the cavity of the valve body, a first sealing surface is arranged on the step surface, a rocker 8 is synchronously arranged in the cavity of the valve body at the lower part of the cavity of the valve body through a rotating shaft 7 in a rotating manner, a valve clack 9 is arranged on the rocker, and a second sealing surface in sealing fit with the first sealing surface is arranged on the valve clack. The rotating shaft is provided with a torsion spring. The valve flap has an open position that rotates downward under the impact of the media to open the inlet channel and a closed position that rotates upward under the action of the torsion spring to seal the inlet channel. The inlet flange is provided with a bypass pipeline 10 communicated with the inlet flow passage.
Because the valve clack is when opening, the torsional spring can do work, consequently can not produce great impact force between opening the in-process valve clack and the valve body, and can produce the impact with the step face that is equivalent to the disk seat when the valve clack is closed under the torsional spring effect. In order to buffer the impact force, a guide hole 11 is arranged on the step surface in the cavity of the valve body, a guide rod 12 and a pressure spring 16 are arranged in the guide hole, and a pressure plate 14 for pressing the valve clack is arranged at the end part of the guide rod positioned outside the guide hole. A baffle plate 15 is arranged at the inlet of the guide hole, and an elastic bayonet 13 is arranged at the insertion end of the guide rod. The separation blade is the annular separation blade that the aperture is the same with the aperture of guiding hole in the inner diameter, is provided with the breach 22 that supplies the elastic pin to pass through on the inner wall of separation blade. The hole wall of the guide hole is provided with a mounting groove 17 for the elastic pin to be movably mounted along the guide direction of the guide rod, and the mounting groove and the notch on the separation blade are arranged in a staggered manner. The elastic pin is specifically installed in a way that a rear installation through hole 18 is formed in the guide rod, a necking structure 21 is arranged at one end of the installation through hole, a plug 19 is arranged at the other end of the installation through hole, the elastic pin 13 is a step shaft and is installed in the installation through hole in a guiding mode, and a spring 20 is arranged between the elastic pin and the plug in the installation through hole.
When the installation, guide bar and the elastic pin on it pass through annular separation blade, and the tip of elastic pin is the sphere, and under the pore wall extrusion of guiding hole, the elastic pin contracts to in the guide bar, rotates the guide bar and makes elastic pin and mounting groove correspond, and the elastic pin stretches out and gets into in the mounting groove, has not only realized the removal direction installation of guide bar, but also can prevent that the guide bar from deviating from the guiding hole.
When the valve clack is used, the valve clack rotates downwards to be opened under the impact force of a medium, the closing and sealing are realized under the action of the medium and the torsion spring, the valve clack can be opened at a larger angle, and the sealing reliability of the valve clack is improved under the action of the torsion spring. The medium does not need to overcome the gravity of the valve clack, and only needs to overcome the force of the torsion spring and the friction force of the rotating shaft to open the valve clack, so that the valve clack is suitable for small flow and large flow, and the universality is improved. In addition, a special valve seat is not required to be arranged, a step surface is arranged in the valve body to serve as the valve seat, the structure is simple, and the cost is reduced.
In other embodiments of the utility model, on the premise of not affecting the use and the service life of the valve clack, the buffer structure formed by the guide hole and the guide rod is not needed; the bypass line may not be provided.
Claims (5)
1. The utility model provides a check valve is opened soon to full forged steel formula of spiraling down, includes the valve body, and the valve body has the cavity, and the valve body has inlet flow channel and exit flow channel with the cavity intercommunication, its characterized in that: a step is arranged at the outlet end of the inlet flow passage in the cavity of the valve body, a first sealing surface is arranged on the step surface, a rocker is synchronously and rotatably arranged at the lower part of the cavity of the valve body through a rotating shaft, a valve clack is arranged on the rocker, a second sealing surface in sealing fit with the first sealing surface is arranged on the valve clack, and a torsion spring is arranged on the rotating shaft; the valve flap has an open position that rotates downward under the impact of the media to open the inlet channel and a closed position that rotates upward under the action of the torsion spring to seal the inlet channel.
2. The fully forged steel swing check valve of claim 1, wherein: the valve body adopts a forged steel valve body, the swing check valve further comprises an inlet flange and an outlet flange which are made of forged steel, the inlet flange and the outlet flange are welded with the valve body, an inlet flow passage is formed in an inner cavity of the inlet flange, and an outlet flow passage is formed in an inner cavity of the outlet flange.
3. The fully forged steel swing check valve of claim 2, wherein: and a bypass pipeline communicated with the inlet runner is arranged on the inlet flange.
4. The fully forged steel swing check valve according to any one of claims 1 to 3, wherein: a guide hole is formed in the step surface inside the cavity of the valve body, a guide rod and a pressure spring are arranged in the guide hole, and a pressure plate for jacking the valve clack is arranged at the end part of the guide rod outside the guide hole.
5. The fully forged steel swing check valve of claim 4, wherein: the import department of guiding hole is provided with the separation blade, and the end of inserting of guide bar is provided with flexible bayonet lock, and the separation blade is the annular separation blade that inner bore diameter is the same with the aperture of guiding hole, is provided with the breach that supplies the elastic pin to pass through on the inner wall of separation blade, is provided with the mounting groove that supplies the elastic pin to follow guiding direction movable mounting of guide bar on the pore wall of guiding hole, and the breach on mounting groove and the separation blade sets up by staggering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121375435.6U CN214743559U (en) | 2021-06-21 | 2021-06-21 | Full forged steel down-rotation type swing check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121375435.6U CN214743559U (en) | 2021-06-21 | 2021-06-21 | Full forged steel down-rotation type swing check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214743559U true CN214743559U (en) | 2021-11-16 |
Family
ID=78630561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121375435.6U Active CN214743559U (en) | 2021-06-21 | 2021-06-21 | Full forged steel down-rotation type swing check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214743559U (en) |
-
2021
- 2021-06-21 CN CN202121375435.6U patent/CN214743559U/en active Active
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