CN215059756U - High-pressure check valve with replaceable sealing element - Google Patents
High-pressure check valve with replaceable sealing element Download PDFInfo
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- CN215059756U CN215059756U CN202120955825.4U CN202120955825U CN215059756U CN 215059756 U CN215059756 U CN 215059756U CN 202120955825 U CN202120955825 U CN 202120955825U CN 215059756 U CN215059756 U CN 215059756U
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Abstract
The utility model relates to a high-pressure check valve with a replaceable sealing element, which comprises a valve body, a medium inlet and a medium outlet which are arranged on the valve body, wherein a valve seat, a cage and a valve cover are arranged in the valve body, a valve clack is arranged in the cage, the valve clack is in sealing contact with the valve seat, and a plurality of flow windows are arranged on the cage; the cavity is arranged between the valve cover and the valve body, the bottom of the cavity is provided with a sealing gasket and a sealing gasket ring, the sealing gasket ring is arranged at the position above the sealing gasket, a compression nut in a T shape is arranged above the valve body, the lower end of the compression nut is arranged in the cavity and is in threaded connection with the inner wall of the valve body, so that the sealing gasket and the sealing gasket ring are compressed tightly, the upper end of the compression nut is provided with a bolt pressing plate, and a plurality of locking screws are arranged from the outer side end longitudinally penetrating through the compression nut to the valve body. The utility model has the advantages of as follows: the valve body is prevented from vibrating due to impact of medium power, and the design performance requirement can be met only by quickly replacing sealing pair parts without replacing the valve body.
Description
The technical field is as follows:
the utility model belongs to the check valve field, concretely relates to high pressure check valve of removable sealing member.
Background art:
the high-pressure check valve is a valve which automatically opens and closes a valve clack by medium flowing, is used for preventing medium from flowing backwards, is also called a check valve, a one-way valve, a reflux valve and a back pressure valve, and mainly has the functions of preventing medium from flowing backwards, preventing a pump and a driving motor from reversing and discharging container medium. Check valves may also be used to provide make-up lines to auxiliary systems where the pressure may rise above the system pressure.
The existing check valve has the following defects: the valve clack inlays to be established in the valve body or in the valve gap, push down the valve clack under the effect of medium power and reciprocate along the vertical center line of valve body or valve gap, the medium directly acts on valve body and valve gap to the medium power of valve clack, make the phenomenon such as vibration appear in the check valve in the use, also have and set up spring buffer between valve clack and valve gap or valve body, the vibration to the valve body is cushioned, but the installation is inconvenient, most importantly can't dismantle the change to the sealed pair of check valve, and the blowing loss can appear after the sealing member in the check valve is used for a long time, need carry out the whole valve of changing, and foretell this kind of structure can't realize sealed vice dismantlement change. Therefore, a high-pressure check valve is needed, which not only avoids the impact of medium power to make the valve body vibrate, but also is convenient to realize that the valve body is not replaced, and the design requirements can be met only by replacing the sealing pair parts quickly.
The utility model has the following contents:
the utility model aims at overcoming above not enough, providing a high pressure check valve of removable sealing member, not only avoid medium power's impact and make valve body itself produce the vibration, be convenient for realize not changing the valve body moreover, only need the sealed pair spare part of quick replacement just can reach the designing requirement.
The purpose of the utility model is realized through the following technical scheme: a high-pressure check valve with replaceable sealing elements comprises a valve body, a medium inlet and a medium outlet, wherein the medium inlet and the medium outlet are arranged on the valve body, a valve seat, a cage cover and a valve cover are arranged in the valve body, the valve seat is in sealing fit contact with the cage cover, a valve clack is arranged in the cage cover and is in sealing contact with the valve seat, a plurality of flow windows are arranged on the cage cover, and a medium enters from the medium inlet and pushes the valve clack upwards to separate the valve clack from the valve seat and is discharged to the medium outlet through the flow windows;
the cavity is arranged between the valve cover and the valve body, the bottom of the cavity is provided with a sealing gasket and a sealing gasket ring, the sealing gasket ring is arranged above the sealing gasket, a compression nut in a T shape is arranged above the valve body, the lower end of the compression nut is arranged in the cavity and is in threaded connection with the inner wall of the valve body, so that the sealing gasket and the sealing gasket ring are compressed tightly, the upper end of the compression nut is provided with a bolt pressing plate, the bolt pressing plate is sleeved at the upper end of the valve cover and is in threaded connection with the valve cover, and a plurality of locking screws are arranged from the outer side end longitudinally penetrating through the compression nut to the valve body.
The utility model discloses a further improvement is in: the valve body is provided with a groove for embedding the lower end of the locking screw.
The utility model discloses a further improvement is in: the locking screws are distributed in an equal circumference.
The utility model discloses a further improvement is in: the outer edge of the lower end of the valve clack is a sealing surface A, the valve seat is of an annular structure, the inner wall of the upper end of the valve seat is a sealing surface B, and the sealing surface A and the sealing surface B are in sealing fit to form a sealing pair.
The utility model discloses a further improvement lies in: a winding gasket is arranged between the valve seat and the valve body.
The utility model discloses a further improvement is in: the sealing surface A and the sealing surface B are in conical structures.
Compared with the prior art, the utility model has the following advantage:
1. in the high pressure check valve of this application, the valve clack sets up in the cage, the cage is arranged the valve body inside and through the extrusion of valve gap and with disk seat sealing contact, the steadiness of cage is good, the valve clack reciprocates along the vertical center line of cage in the cage under the effect that receives medium liquid power, avoid the valve clack directly to act on at the valve body and take place the swing after receiving liquid power, phenomenons such as drunkenness, the valve gap passes through gland nut, bolt clamp plate and locking screw's effect and valve body zonulae occludens, it is firm to connect, both avoid the impact of liquid power and make the valve body itself produce the vibration, be convenient for realize inner structure's dismantlement change again.
2. The lower extreme that locking screw runs through gland nut and locking screw inlays in the recess of valve body, has further guaranteed the connection steadiness between gland nut and the valve body, avoids gland nut to take place not hard up with the valve body under the effect that the inside medium of valve body flows, guarantees high pressure check valve integral connection stability and inside sealing performance.
Description of the drawings:
fig. 1 is a schematic structural view of the high-pressure check valve with replaceable sealing element of the present invention.
Fig. 2 is a schematic structural diagram of the valve seat and the valve flap in fig. 1.
Reference numbers in the figures:
1-valve body, 2-medium inlet, 3-medium outlet, 4-valve seat, 5-cage, 6-valve cover, 7-valve flap, 8-flow window, 9-cavity, 10-sealing pad, 11-sealing pad ring, 12-compression nut, 13-bolt pressure plate, 14-locking screw, 15-groove, 16-sealing surface A, 17-sealing surface B and 18-winding gasket.
The specific implementation mode is as follows:
in order to deepen the understanding of the present invention, the present invention will be further described in detail with reference to the following embodiments and the attached drawings, and the embodiments are only used for explaining the present invention, and do not constitute the limitation to the protection scope of the present invention.
In the description of the present invention, it should be understood that the terms indicating orientation or positional relationship, such as those based on the drawings, are only for convenience of description and simplification of description, and do not indicate or imply that the structures or units indicated must have a specific orientation, and therefore, should not be construed as limiting the present invention.
In the present invention, unless otherwise specified or limited, terms such as "connected," "provided," "having," and the like are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, or directly connected, and may be connected through an intermediate medium, and those skilled in the art can understand the basic meaning of the above terms in the present invention according to specific situations.
Fig. 1 shows an embodiment of a high-pressure check valve with replaceable sealing element of the present invention, which includes a valve body 1, and a medium inlet 2 and a medium outlet 3 disposed on the valve body 1, the valve body 1 has a valve seat 4, a cage 5, and a valve cover 6, the valve seat 4 is in sealing fit contact with the cage 5, the cage 5 has a valve flap 7, the valve flap 7 is in sealing contact with the valve seat 4, the cage 5 has a plurality of flow windows 8, the medium enters from the medium inlet 2 and pushes the valve flap 7 upwards to separate the valve flap 7 from the valve seat 4 and is discharged to the medium outlet 3 through the flow windows 8;
the cavity 9 is arranged between the valve cover 6 and the valve body 1, the bottom of the cavity 9 is provided with a sealing gasket 10 and a sealing gasket ring 11, the sealing gasket ring 11 is arranged above the sealing gasket 10, a T-shaped compression nut 12 is arranged above the valve body 1, the lower end of the compression nut 12 is arranged in the cavity 9 and is in threaded connection with the inner wall of the valve body 1, so that the sealing gasket 10 and the sealing gasket ring 11 are compressed tightly, the upper end of the compression nut 12 is provided with a bolt pressing plate 13, the bolt pressing plate 13 is sleeved at the upper end of the valve cover 6 and is in threaded connection with the valve cover 6, and a plurality of locking screws 14 are arranged from the outer side end longitudinally penetrating through the compression nut 12 to the valve body 1.
The working principle is as follows: in a natural state, the valve clack 7 is in sealing contact with the valve seat 4 along with the gravity of the valve clack and the pressure of the medium outlet 3, and at the moment, the outer wall of the valve clack 7 covers the flow window 8 on the cage 5 to block the medium inlet 2 and the medium outlet 3; when the medium flows from the medium inlet 2, the medium pushes the valve flap 7 upwards under the action of the medium power to enable the valve flap 7 to move upwards along the vertical center line of the cage 5, at the moment, the outer wall of the valve flap 7 cancels the covering of the flow window 8 on the cage 5, and the medium flows out to the medium outlet 3 through the flow window 8. The medium in this application can only flow out to the direction of medium export 3 by medium import 2, plays the effect of one-way circulation.
In the high pressure check valve of this application, valve clack 7 sets up in cage cover 5, cage cover 5 is arranged in 1 inside and through valve gap 6's extrusion and with disk seat 4 sealing contact of valve body, cage cover 5's steadiness is good, valve clack 7 reciprocates along the perpendicular center line of cage cover 5 in cage cover 5 receiving the effect of medium power, avoid valve clack 7 direct action at valve body 1 and take place the swing after receiving liquid power, phenomenons such as drunkenness, valve gap 6 is through gland nut 12, bolt clamp plate 13 and locking screw 14's effect and valve body 1 zonulae occludens, it is firm to connect, not only avoid the impact of medium power and make valve body 1 itself vibrate, and realized not changing valve body 1 again, only need the sealed pair spare part of quick replacement just can reach the design performance requirement.
Further, the valve body 1 is provided with a groove 15 into which the lower end of the locking screw 14 is inserted.
Further, the plurality of locking screws 14 are distributed in an equal circumference.
The locking screw 14 penetrates through the compression nut 12 and the lower end of the locking screw 14 is embedded in the groove 15 of the valve body 1, so that the connection stability between the compression nut 12 and the valve body 1 is further guaranteed, the compression nut 12 is prevented from loosening with the valve body 1 under the action of flowing of the medium inside the valve body 1, and the overall connection stability and the internal sealing performance of the high-pressure check valve are guaranteed.
In this application, can screw gland nut 12 in cavity 9 between valve body 1 and valve gap 6 earlier, gland nut 12 is fixed the back that finishes, and accessible machining runs through the screw on gland nut 12 and beats recess 15 on valve body 1, and the screw (not shown in the figure) on gland nut 12 corresponds in proper order with recess 15 on the valve body 1 this moment, through locking screw 14 with gland nut 12 and valve body 1 fixed connection.
Further, as shown in fig. 2, the outer edge of the lower end of the valve flap 7 is a sealing surface a16, the valve seat 4 is in a ring-shaped structure, the inner wall of the upper end of the valve seat 4 is a sealing surface B17, and the sealing surface a16 is in sealing fit with the sealing surface B17 to form a sealing pair.
Further, a winding gasket 18 is provided between the valve seat 4 and the valve body 1. The provision of the wrap-around gasket 18 prevents leakage of the medium inside the valve.
Further, the sealing surface a16 and the sealing surface B17 have a tapered structure.
In this application, adopt the sealed face of toper column structure between valve clack 7 and the disk seat 4, mutually support and form sealed vice, consequently when the medium does not circulate or the medium when the medium exports 3, disk seat 4 mutually supports with valve clack 7, plays the effect of separation to medium import 2 and medium export 3, guarantees sealed effect, effectively prevents the medium refluence.
The present invention is not limited to the above-described embodiments, and the description of the embodiments and the description is only illustrative of the principles of the present invention, and various changes and modifications can be made without departing from the spirit and scope of the present invention, which fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A seal-replaceable high-pressure check valve, characterized by: the medium valve comprises a valve body, a medium inlet and a medium outlet, wherein the medium inlet and the medium outlet are arranged on the valve body, a valve seat, a cage and a valve cover are arranged in the valve body, the valve seat is in sealing fit contact with the cage, a valve clack is arranged in the cage, the valve clack is in sealing contact with the valve seat, a plurality of flow windows are arranged on the cage, and a medium enters from the medium inlet and pushes the valve clack upwards to separate the valve clack from the valve seat and is discharged to the medium outlet through the flow windows;
the cavity has between valve gap and the valve body, the bottom of cavity has sealed pad and sealing gasket ring, the top position that sealed pad is arranged in to the sealing gasket ring, just the top of valve body is equipped with the gland nut of T type form, thereby gland nut's lower extreme is arranged in the cavity and is compressed tightly sealed pad and sealing gasket ring with the inner wall threaded connection of valve body, gland nut's upper end has the bolt clamp plate, the bolt clamp plate cover establish in the upper end of valve gap and with valve gap threaded connection, vertically run through gland nut's outside end has a plurality of locking screw to the valve body.
2. The replaceable seal high pressure check valve of claim 1, wherein: the valve body is provided with a groove for embedding the lower end of the locking screw.
3. The replaceable seal high pressure check valve of claim 2, wherein: the locking screws are distributed in an equal circumference.
4. A seal replaceable high pressure check valve as defined in claim 3 wherein: the outer edge of the lower end of the valve clack is a sealing surface A, the valve seat is of an annular structure, the inner wall of the upper end of the valve seat is a sealing surface B, and the sealing surface A and the sealing surface B are in sealing fit to form a sealing pair.
5. The seal-replaceable high-pressure check valve according to any one of claims 1 to 4, wherein: and a winding gasket is arranged between the valve seat and the valve body.
6. The replaceable seal high pressure check valve of claim 4, wherein: the sealing surface A and the sealing surface B are in conical structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120955825.4U CN215059756U (en) | 2021-05-07 | 2021-05-07 | High-pressure check valve with replaceable sealing element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120955825.4U CN215059756U (en) | 2021-05-07 | 2021-05-07 | High-pressure check valve with replaceable sealing element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215059756U true CN215059756U (en) | 2021-12-07 |
Family
ID=79198476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120955825.4U Active CN215059756U (en) | 2021-05-07 | 2021-05-07 | High-pressure check valve with replaceable sealing element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215059756U (en) |
-
2021
- 2021-05-07 CN CN202120955825.4U patent/CN215059756U/en active Active
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