CN211779255U - Flange connection type check valve - Google Patents
Flange connection type check valve Download PDFInfo
- Publication number
- CN211779255U CN211779255U CN202020297223.XU CN202020297223U CN211779255U CN 211779255 U CN211779255 U CN 211779255U CN 202020297223 U CN202020297223 U CN 202020297223U CN 211779255 U CN211779255 U CN 211779255U
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- flange
- valve
- carbon steel
- plate
- butt
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Abstract
The utility model relates to a flange joint formula check valve. The valve comprises a first valve body, wherein a first butt flange is arranged at the inner end of the first valve body, a first neck pipe is arranged at the outer end of the first valve body, and a first mounting flange is arranged at the outer end of the first neck pipe; the valve also comprises a second valve body, wherein a second butt-joint flange plate is arranged at the inner end of the second valve body, a second neck pipe is arranged at the outer end of the second valve body, and a second mounting flange plate is arranged at the outer end of the second neck pipe; a valve clack component is arranged inside the valve body; the valve clack assembly comprises a carbon steel plate and a rubber pad, and the carbon steel plate and the rubber pad are fixedly connected in the middle by a connecting bolt; the carbon steel plate is characterized in that a plurality of medium through holes are formed in the plate body of the carbon steel plate, a clamping outer ring is arranged on the edge of the carbon steel plate and is clamped and fixed between a first butt flange disc and a second butt flange disc, a first sealing gasket is arranged between the clamping outer ring and the first butt flange disc, and a second sealing gasket is arranged between the clamping outer ring and the second butt flange disc. The utility model discloses compact structure, open and close rapidly, water hammer effect is little.
Description
Technical Field
The utility model belongs to the technical field of valve equipment, especially, relate to a flange joint formula check valve.
Background
The check valve is also called a check valve or a check valve, and is a valve structure that fluid can only flow in one direction and can not flow back in the opposite direction, the check valve can prevent hydraulic oil from flowing reversely when used in a hydraulic system and can prevent compressed air from flowing reversely when used in a pneumatic system, and the check valve can prevent media from flowing reversely when applied to medium pipelines such as water pipes, cooling liquid pipes and heat-conducting oil pipe systems.
The check valve structurally generally comprises a valve body, wherein a movable valve clack is arranged in the valve body, when a medium flows in a calibration direction, the medium forces the valve clack to be separated from the original position and enter an accommodating space, so that the valve is conducted, and when the medium flows in the reverse direction of the calibration direction, the valve clack is forced to reset by stopping or reset under the dual action of the gravity of the valve clack and the pressure of the medium, so that the valve is turned off. The flap of the non-return valve thus has a certain working distance, from the initial position to the end position during opening of the valve and from the end position to the initial position during closing of the valve.
The above working distance of the existing check valve is usually large, which results in that the time consumed for opening and closing the valve is long, so that when the medium flows in the forward direction, the valve cannot be opened rapidly to establish a flow channel, and when the medium flows back, the valve cannot be closed rapidly to block the flow channel, so that a part of the medium can still flow back. On the other hand, the check valve is easy to generate a large impact water hammer effect in the opening and closing processes, so that the problems of pipeline vibration, valve damage, noise and the like are caused. Therefore, the structure of the check valve needs to be optimally designed.
SUMMERY OF THE UTILITY MODEL
The utility model provides a flange connection type check valve with compact structure, rapid opening and closing and small water hammer effect for solving the technical problems existing in the prior art.
The utility model discloses a solve the technical scheme that technical problem that exists among the well-known technique took and be: a flange connection type check valve comprises a first valve body, wherein a first butt flange is arranged at the inner end of the first valve body, a first neck pipe is arranged at the outer end of the first valve body, and a first mounting flange is arranged at the outer end of the first neck pipe; the valve also comprises a second valve body, wherein a second butt-joint flange plate is arranged at the inner end of the second valve body, a second neck pipe is arranged at the outer end of the second valve body, and a second mounting flange plate is arranged at the outer end of the second neck pipe; the first butt joint flange plate and the second butt joint flange plate are in butt joint connection, and a valve clack assembly is arranged in the first butt joint flange plate and the second butt joint flange plate; the valve clack assembly comprises a carbon steel plate and a rubber pad attached to the carbon steel plate, and the carbon steel plate and the rubber pad are fixedly connected in the middle by a connecting bolt; the carbon steel plate is characterized in that a plurality of medium through holes are formed in the plate body of the carbon steel plate, a clamping outer ring is arranged on the edge of the carbon steel plate and is clamped and fixed between a first butt flange disc and a second butt flange disc, a first sealing gasket is arranged between the clamping outer ring and the first butt flange disc, and a second sealing gasket is arranged between the clamping outer ring and the second butt flange disc.
The utility model has the advantages that: the utility model provides a flange joint formula check valve that structural design is compact through set up first mounting flange dish on first valve body, set up second mounting flange dish on the second valve body, makes whole check valve be convenient for insert the connection to going up on the pipeline. Through the valve clack subassembly that constitutes such as the carbon steel sheet piece that sets up in inside by having the medium thru hole and rubber pad, realized whether laminating according to carbon steel sheet piece and rubber pad between and switch on/closed technological effect, compare with current check valve structural style, the utility model discloses its reciprocating motion's of well valve clack stroke is littleer promptly, therefore the switch of valve is rapider. Due to the material characteristics of the carbon steel plate, when the medium pressure reaches the degree that the carbon steel plate is forced to deform slightly, the check valve is opened and conducted to quickly establish a channel, so that the water hammer effect is smaller, and the vibration and noise of a medium pipeline are smaller in the long-time working process.
Preferably: a first annular gasket groove is formed in the inner side edge of the outer end face of the first butt flange, and the first gasket is located in the first annular gasket groove; and a second annular gasket groove is formed in the inner side edge of the outer end face of the second butt joint flange plate, and the second gasket is positioned in the second annular gasket groove.
Preferably: the carbon steel plate is manufactured by integral punch forming, the plate body in the middle of the carbon steel plate protrudes in one direction to form a curved surface, the rubber pad is positioned at the back of the carbon steel plate, and the curved surface of the front of the rubber pad is consistent with the curved surface of the main body of the carbon steel plate.
Preferably: the middle part of the rubber pad is provided with a threaded hole, the screw part of the connecting bolt is positioned in the threaded hole of the rubber pad, and a gasket is arranged between the rubber pad and the screw cap of the connecting bolt.
Preferably: the first butt joint flange plate and the second butt joint flange plate are fixedly connected through a plurality of mounting bolts which are circumferentially arranged at equal angle intervals.
Preferably: the first valve body, the first neck pipe, the first mounting flange plate and the first butt-joint flange plate are integrally cast and formed, and the second valve body, the second neck pipe, the second mounting flange plate and the second butt-joint flange plate are integrally cast and formed.
Preferably: an indicating mark for indicating the positive flowing direction of the medium is further arranged on the outer wall of the first valve body, and the indicating mark is an arrow mark with the indicating direction opposite to the protruding direction of the carbon steel plate middle plate body.
Preferably: the indication mark is formed on the surface of the first valve body in an integral casting mode.
Drawings
Fig. 1 is a schematic view of the external structure of the present invention;
fig. 2 is a schematic front view of the present invention;
fig. 3 is a schematic sectional structure of the present invention;
fig. 4 is a schematic structural view of the valve flap assembly of fig. 3.
In the figure: 1. a first valve body; 1-1, indicating identification; 2. a second valve body; 3. a second neck tube; 4. a first mounting flange; 5. installing a bolt; 6. a first mating flange; 7. a second docking flange; 8. a second mounting flange; 9. a first neck tube; 10. a first gasket; 11. a second gasket; 12. carbon steel plate sheets; 12-1, medium through holes; 12-2, clamping the outer ring; 13. a rubber pad; 14. a gasket; 15. and connecting the bolts.
Detailed Description
For further understanding of the contents, features and effects of the present invention, the following embodiments are described in detail.
Referring to fig. 1 and 2, the flange-connected check valve of the present invention includes a first valve body 1, a first butt flange 6 disposed at the inner end of the first valve body 1, a first neck pipe 9 disposed at the outer end of the first valve body, and a first mounting flange 4 disposed at the outer end of the first neck pipe 9. The first valve body 1, the first butt flange 6, the first neck pipe 9 and the first mounting flange 4 form a complete valve body structure, in this embodiment, the first valve body 1, the first neck pipe 9, the first mounting flange 4 and the first butt flange 6 are obtained by integral casting, after the integral casting, the end faces of the first mounting flange 4 and the first butt flange 6 are subjected to finish milling at a processing center, and a connecting hole is formed in the flange.
The valve further comprises a second valve body 2, a second butt flange 7 is arranged at the inner end of the second valve body 2, a second neck pipe 3 is arranged at the outer end of the second valve body, and a second mounting flange 8 is arranged at the outer end of the second neck pipe 3. The second valve body 2, the second butt joint flange 7, the second neck pipe 3 and the second mounting flange 8 form a complete valve body structure, in this embodiment, the second valve body 2, the second neck pipe 3, the second mounting flange 8 and the second butt joint flange 7 are obtained by integral casting, the end faces of the second mounting flange 8 and the second butt joint flange 7 are subjected to finish milling in a machining center after the integral casting, and a connecting hole is formed in the flange.
The first butt flange 6 and the second butt flange 7 are in butt joint, and in this embodiment, the first butt flange 6 and the second butt flange 7 are connected and fixed by a plurality of mounting bolts 5 arranged at equal angular intervals in the circumferential direction. The first mounting flange 4 and the second mounting flange 8 are connected with flanges on the pipeline in a butt joint mode through bolts.
The valve clack component is arranged in the valve body, can deform and move in the axial direction of the check valve, and achieves opening and closing actions of the check valve.
Referring to fig. 3 and 4, it can be seen that:
the valve clack assembly comprises a carbon steel plate sheet 12 and a rubber pad 13 attached to the carbon steel plate sheet, and the carbon steel plate sheet 12 and the rubber pad 13 are fixedly connected at the middle part by a connecting bolt 15. As shown in the drawing, a connection hole is provided at the center of the carbon steel plate piece 12, and a connection bolt 15 passes through the connection hole. In this embodiment, a threaded hole is formed in the middle of the rubber pad 13, the screw portion of the connecting bolt 15 is located in the threaded hole of the rubber pad 13, and a washer 14 is further disposed between the rubber pad 13 and the nut of the connecting bolt 15. Through setting up packing ring 14, can prevent effectively that connecting bolt 15 from taking place the pine and taking off, through making threaded connection between rubber pad 13 and the connecting bolt 15, realized the location of rubber pad 13, just also become rubber pad 13 and connecting bolt 15 fixed for a whole, just so effectively avoided rubber pad 13 to shift in radial direction, make it can laminate with carbon steel sheet 12 better.
The carbon steel plate is characterized in that a plurality of medium through holes 12-1 are formed in the plate body of the carbon steel plate 12, a medium passes through the medium through holes 12-1, a clamping outer ring 12-2 is arranged on the edge of the carbon steel plate 12, the clamping outer ring 12-2 is clamped and fixed between the first butt flange plate 6 and the second butt flange plate 7, in order to improve the sealing performance of the whole check valve and avoid medium leakage, a first sealing gasket 10 is arranged between the clamping outer ring 12-2 and the first butt flange plate 6, and a second sealing gasket 11 is arranged between the clamping outer ring 12-2 and the second butt flange plate 7. After the check valve is assembled, the first sealing gasket 10, the clamping outer ring 12-2 and the second sealing gasket 11 are clamped between the first butt flange 6 and the second butt flange 7, so that other sealing rings do not need to be arranged between the first butt flange 6 and the second butt flange 7 (of course, the sealing rings can also be arranged).
In this embodiment, a first annular gasket groove is formed in an inner edge of an outer end surface of the first butting flange 6, and the first gasket 10 is located in the first annular gasket groove; a second annular gasket groove is formed in the inner side edge of the outer end face of the second butt flange 7, and the second gasket 11 is located in the second annular gasket groove. The annular gasket groove provides accommodating space for the first gasket 10 and the second gasket 11, positioning of the gaskets is achieved, and installation of the valve clack assembly inside the valve body is facilitated.
The rubber pad 13 covers the area of each medium through hole 12-1 to block each medium through hole 12-1. in this embodiment, the carbon steel plate 12 is integrally formed by punching, the plate body in the middle is convex to one direction to form a curved surface (correspondingly, as shown in fig. 4, the clamping outer ring 12-2 formed by punching is located in the same plane), the rubber pad 13 is located on the back (i.e. the concave part) of the carbon steel plate 12, and the curved surface shape of the front part of the rubber pad 13 is consistent with the curved surface shape of the main body part of the carbon steel plate 12. In order to ensure the sealing performance of the joint between the carbon steel plate 12 and the rubber pad 13, the back surface of the carbon steel plate 12 and the front surface of the rubber pad 13 should be as flat as possible to prevent a gap from being formed therebetween in a natural state.
In this embodiment, an indicator 1-1 indicating the forward flowing direction of the medium is further disposed on the outer wall of the first valve body 1, and the indicator 1-1 is an arrow mark indicating that the direction is opposite to the protruding direction of the middle plate body of the carbon steel plate 12. Further, the indication mark 1-1 is obtained by integral casting on the surface of the first valve body 1, and the setting of the indication mark 1-1 is beneficial to the installation and use of the check valve.
The working process is as follows:
the check valve is butt-jointed and installed on a medium pipeline through a first installation flange 4 and a second installation flange 8;
when the medium flows in the positive direction (namely flows along the direction indicated by the indication mark 1-1), under the action of medium pressure, the carbon steel plate 12 deforms along the direction indicated by the mark, the deformation is larger when the medium pressure is larger, at the moment, the carbon steel plate 12 is separated from the rubber pad 13 (only connected by the connecting bolt 15 in the middle), each medium through hole 12-1 is opened, and the medium can pass through;
when the medium has a tendency of flowing reversely (i.e. against the direction indicated by the indication mark 1-1), the carbon steel plate 12 is reset and deformed under the dual actions of medium pressure and the self-reset elasticity of the carbon steel plate 12, and the rubber pad 13 is pressed on the carbon steel plate 12 to seal the medium through hole 12-1 under the action of the medium pressure, so that the check valve is closed, and the medium cannot flow back.
Claims (8)
1. A flange joint formula check valve, characterized by: the valve comprises a first valve body (1), wherein a first butt flange (6) is arranged at the inner end of the first valve body (1), a first neck pipe (9) is arranged at the outer end of the first valve body, and a first mounting flange (4) is arranged at the outer end of the first neck pipe (9); the valve also comprises a second valve body (2), wherein a second butt flange (7) is arranged at the inner end of the second valve body (2), a second neck pipe (3) is arranged at the outer end of the second valve body, and a second mounting flange (8) is arranged at the outer end of the second neck pipe (3);
the first butt joint flange plate (6) and the second butt joint flange plate (7) are in butt joint connection, and a valve clack assembly is arranged in the first butt joint flange plate and the second butt joint flange plate; the valve clack assembly comprises a carbon steel plate sheet (12) and a rubber pad (13) attached to the carbon steel plate sheet, and the carbon steel plate sheet (12) and the rubber pad (13) are fixedly connected in the middle by a connecting bolt (15); a plurality of medium through holes (12-1) are formed in a plate body of a carbon steel plate (12), a clamping outer ring (12-2) is arranged on the edge of the carbon steel plate (12), the clamping outer ring (12-2) is clamped and fixed between a first butt flange plate (6) and a second butt flange plate (7), a first sealing gasket (10) is arranged between the clamping outer ring (12-2) and the first butt flange plate (6), and a second sealing gasket (11) is arranged between the clamping outer ring (12-2) and the second butt flange plate (7).
2. The flange-connected check valve of claim 1, wherein: a first annular gasket groove is formed in the inner side edge of the outer end face of the first butt flange (6), and a first gasket (10) is located in the first annular gasket groove; and a second annular gasket groove is formed in the inner side edge of the outer end face of the second butt joint flange plate (7), and a second gasket (11) is positioned in the second annular gasket groove.
3. The flange-connected check valve of claim 2, wherein: the carbon steel plate (12) is formed by integral punch forming, the plate body in the middle of the carbon steel plate is protruded towards one direction to form a curved surface, the rubber pad (13) is positioned at the back of the carbon steel plate (12), and the curved surface of the front part of the carbon steel plate is consistent with the curved surface of the main body of the carbon steel plate (12).
4. The flange-connected check valve of claim 3, wherein: a threaded hole is formed in the middle of the rubber pad (13), a screw part of the connecting bolt (15) is located in the threaded hole of the rubber pad (13), and a gasket (14) is further arranged between the rubber pad (13) and a screw cap of the connecting bolt (15).
5. The flange-connected check valve of claim 4, wherein: the first butt joint flange plate (6) and the second butt joint flange plate (7) are fixedly connected through a plurality of mounting bolts (5) which are circumferentially arranged at equal angle intervals.
6. The flange-connected check valve of claim 5, wherein: the valve comprises a first valve body (1), a first neck pipe (9), a first mounting flange plate (4) and a first butt flange plate (6) which are integrally cast and formed, and a second valve body (2), a second neck pipe (3), a second mounting flange plate (8) and a second butt flange plate (7) which are integrally cast and formed.
7. The flange-connected check valve of claim 6, wherein: an indication mark (1-1) for indicating the positive flowing direction of the medium is further arranged on the outer wall of the first valve body (1), and the indication mark (1-1) is an arrow mark with the indication direction opposite to the protruding direction of the middle plate body of the carbon steel plate (12).
8. The flange-connected check valve of claim 7, wherein: the indicating mark (1-1) is obtained by integrally casting and molding the surface of the first valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020297223.XU CN211779255U (en) | 2020-03-12 | 2020-03-12 | Flange connection type check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020297223.XU CN211779255U (en) | 2020-03-12 | 2020-03-12 | Flange connection type check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211779255U true CN211779255U (en) | 2020-10-27 |
Family
ID=72939221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020297223.XU Expired - Fee Related CN211779255U (en) | 2020-03-12 | 2020-03-12 | Flange connection type check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211779255U (en) |
-
2020
- 2020-03-12 CN CN202020297223.XU patent/CN211779255U/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: 20201027 |