CN210510438U - High-pressure check valve for water mist - Google Patents
High-pressure check valve for water mist Download PDFInfo
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- CN210510438U CN210510438U CN201921349090.XU CN201921349090U CN210510438U CN 210510438 U CN210510438 U CN 210510438U CN 201921349090 U CN201921349090 U CN 201921349090U CN 210510438 U CN210510438 U CN 210510438U
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Abstract
The utility model relates to a high-pressure check valve for water mist, which comprises a valve body, wherein the valve body comprises an upper valve body and a lower valve body, a medium hole is arranged in the upper valve body, the medium hole is a stepped through hole with a small upper part and a big lower part, the upper valve body is in threaded connection with the lower valve body, a central hole is arranged in the lower valve body, the central hole is a stepped through hole with an I-shaped cross section, and the upper valve body is in threaded connection with a locking nut; the check piece is arranged between the medium hole and the central hole and comprises a valve core and a spring, the valve core is of an inverted-convex structure with a stepped hole, the lower end of the valve core is attached to the small-diameter section of the central hole, the upper end of the valve core is attached to the large-diameter section of the medium hole, a plurality of through holes are formed in the lower end of the valve core, the spring is located in the valve core, the lower end of the spring abuts against the stepped hole of the valve core, and the upper end of the spring abuts against the top surface of the large-diameter section of. The utility model discloses rational in infrastructure, improved the sealing reliability of check valve, the installation of being convenient for simultaneously is dismantled.
Description
Technical Field
The utility model relates to the technical field of valves, especially, relate to a high-pressure check valve for water mist.
Background
The check valve is a valve that the opening and closing piece is circular valve clack and produces the action by self weight and medium pressure and block the medium refluence, current check valve structure is complicated, the installation is dismantled inconveniently, some check valves do not be provided with centering piece, easily take place to deviate, like the check valve that patent publication No. CN 207018581U disclosed, only pass through spring coupling between the adjusting screw that its scheme set up and the case, if meet when rivers unstability, the spring easily takes place to rock to the spring axis takes place to deviate with the valve body axis, influence the normal circulation of water and the life of spring.
The spring of part check valve is fixed the setting mostly simultaneously, can't carry out the regulation of pretightning force size to the spring, the spring atress is yielding for a long time and causes elasticity to weaken, not only influence sealed effect, and cause the life of spring to reduce, like the check valve that patent publication No. CN 207661173U discloses, the spacing post that its scheme set up on the one hand passes and removes in the valve gap along with the removal of sealing member from the middle part of valve gap, spacing post plays the centering effect, prevent that the spring from deviating, but its structure is comparatively complicated, on the other hand its scheme can't be adjusted the spring, in case when spring self elasticity weakens, can influence the sealed effect of sealed dish and interior inclined plane, thereby can't guarantee the normal work of check valve.
Disclosure of Invention
The utility model discloses a solve traditional check valve installation and dismantle inconveniently, the inconvenient problem of adjusting of check valve inner spring provides a high pressure check valve for water mist, has realized convenient installation and the dismantlement of check valve, can adjust the spring simultaneously, guarantees sealed effect.
In order to achieve the above object, the utility model adopts the following technical scheme:
a high-pressure check valve for water mist comprises a valve body, wherein the valve body comprises an upper valve body and a lower valve body, the upper valve body is cylindrical, a medium hole is formed in the upper valve body, the medium hole is a stepped through hole with a small upper part and a large lower part, the upper valve body is in threaded connection with the lower valve body, the lower valve body is hexagonal prism-shaped, a central hole is formed in the lower valve body, the central hole is a stepped through hole with an I-shaped cross section, a locking nut is in threaded connection with the upper valve body, and the locking nut is in contact with the lower valve body;
the medium hole is arranged in the valve core, the middle hole is arranged in the middle hole, the middle hole is arranged in the.
Further, go up valve body, lower valve body and lock nut and be copper structure, go up valve body diameter, lock nut external diameter and lower valve body external diameter and increase in proper order.
Furthermore, the outer wall of the upper valve body is provided with external threads, the inner walls of the upper section and the lower section of the central hole are provided with internal threads, and the upper valve body is in threaded connection with the large-diameter section at the upper part of the central hole.
Further, the diameter of the upper valve body is the same as that of the large-diameter section of the central hole.
Further, the valve core is of a molded plastic structure; the plurality of through holes are uniformly distributed on the peripheral side wall of the lower end of the valve core.
Through the technical scheme, the beneficial effects of the utility model are that:
the upper valve body, the lower valve body and the locking nut are connected through threads, so that the installation and the disassembly are convenient, and the locking nut can limit the rotation of the upper valve body; the one-way trafficability characteristic between valve body and the lower valve body can be guaranteed to the non return spare that sets up, and the leakproofness is guaranteed in the laminating of case lower extreme and centre bore path section, and the case adopts plastics to make simultaneously, has formed the soft seal structure of case to lower valve body, has further improved the sealing reliability of check valve, and the laminating of case upper end and medium hole path section, the case plays the support guide effect, prevents that spring axis and centre bore axis from taking place to deviate.
The upper valve body and the lower valve body are connected through the screw thread, when the spring force is insufficient, the supporting force of the spring to the valve core can be adjusted by rotating the upper valve body, so that reliable sealing is obtained, and the service life of the check valve is prolonged; the plurality of through holes increase the flow area of water flow and improve the medium flow capacity of the check valve. The utility model discloses rational in infrastructure, improved the sealing reliability of check valve, the installation of being convenient for simultaneously is dismantled, applicable in thin water smoke pipeline.
Drawings
Fig. 1 is the overall structure schematic diagram of the high-pressure check valve for water mist of the present invention.
Fig. 2 is a top view of fig. 1 of the high pressure check valve for water mist of the present invention.
Fig. 3 is a schematic view of the direction a-a in fig. 2 of the high-pressure check valve for water mist of the present invention.
Fig. 4 is a sectional view showing a flow passing state of the high pressure check valve for water mist of the present invention.
The reference numbers in the drawings are as follows: 1 is an upper valve body, 2 is a lower valve body, 3 is a medium hole, 4 is a central hole, 5 is a locking nut, 6 is a valve core, 7 is a spring, 8 is a stepped hole, and 9 is a through hole.
Detailed Description
The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings:
as shown in fig. 1 to 4, the high-pressure check valve for water mist comprises a valve body, wherein the valve body comprises an upper valve body 1 and a lower valve body 2, the upper valve body 1 is cylindrical, a medium hole 3 is formed in the upper valve body 1, the medium hole 3 is a stepped through hole with a small upper part and a large lower part, the upper valve body 1 is in threaded connection with the lower valve body 2, the lower valve body 2 is hexagonal prism-shaped, a central hole 4 is formed in the lower valve body 2, the central hole 4 is a stepped through hole with an I-shaped cross section, the diameter of the upper valve body 1 is the same as that of a large-diameter section of the central hole 4, a locking nut 5 is in threaded connection with the upper valve body 1, and the locking nut 5 is in contact with;
the check piece is arranged between the medium hole 3 and the central hole 4 and comprises a valve core 6 and a spring 7, the valve core 6 is of a molded plastic structure, the valve core 6 is of an inverted-convex structure with a stepped hole 8 arranged therein, the contact surface of the valve core 6 and the central hole 4 is a conical surface, the lower end of the valve core 6 is attached to the small-diameter section of the central hole 4, the upper end of the valve core is attached to the large-diameter section of the medium hole 3, the lower end of the valve core 6 is provided with a plurality of through holes 9, the through holes 9 are uniformly distributed on the peripheral side wall of the lower end of the valve core 6, the spring 7 is positioned in the valve core 6, the lower end of the spring 7 is abutted to the stepped hole 8 of the valve core 6, and.
Specifically, in this embodiment, the upper valve body 1, the lower valve body 2 and the lock nut 5 are all copper structures, and the diameter of the upper valve body 1, the outer diameter of the lock nut 5 and the outer diameter of the lower valve body 2 are sequentially increased.
In this embodiment, the outer wall of the upper valve body 1 is provided with external threads, the inner walls of the upper section and the lower section of the central hole 4 are provided with internal threads, and the upper valve body 1 is in threaded connection with the large-diameter section on the upper part of the central hole 4.
The utility model discloses during the installation, at first place case 6 in centre bore 4, make 6 lower extremes of case and the laminating of 4 path sections of centre bore, place spring 7 in 8 to the shoulder hole, secondly will go up and make 6 upper ends of case and the laminating of 3 path sections of medium hole in the 4 upper portion path sections of valve body screw in centre bore, go up valve body 1 during the rotation and extrude spring 7 constantly, thereby guarantee case 6 and lower valve body 2 sealed, finally go up in the 4 upper portion path sections of incomplete screw in centre bore of valve body 1, with the adjustable distance to spring 7 leaves, rotatory lock nut 5 makes lock nut 5 and lower valve body 2 in close contact with at last, guarantee to go up in valve body 1 screw in centre bore 4 again.
When the utility model is used, water flow with certain pressure enters from the large-diameter section at the lower part of the central hole 4, continuously impacts the valve core 6, further pushes the valve core 6 to move upwards and enables the spring 7 to deform and compress, so that the lower end of the valve core 6 is not attached to the small-diameter section of the central hole 4 any more, and at the moment, the water flow flows into the stepped hole 8 through the through hole 9 and finally flows out through the medium hole 3; when water flow stops and does not enter the central hole 4 any more, the valve core 6 does not impact water flow any more, the spring 7 extends, and the lower end of the valve core 6 is attached to the small-diameter section of the central hole 4, so that the sealing of the valve core 6 and the lower valve body 2 is ensured, and the non-return effect is achieved.
When the elasticity of the spring 7 is weakened, firstly, the lock nut 5 is rotated to prevent the lock nut 5 from contacting with the lower valve body 2, at the moment, the upper valve body 1 is still screwed into the central hole 4, the upper valve body 1 extrudes the spring 7, the supporting force of the spring 7 on the valve core 6 is increased, then, the sealing of the valve core 6 and the lower valve body 2 is ensured, and finally, the lock nut 5 is rotated again to enable the lock nut 5 to contact with the lower valve body 2.
The above-mentioned embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the present invention, so that equivalent changes or modifications made by the structure, features and principles of the present invention should be included in the claims of the present invention.
Claims (5)
1. The high-pressure check valve for the water mist comprises a valve body and is characterized in that the valve body comprises an upper valve body (1) and a lower valve body (2), the upper valve body (1) is cylindrical, a medium hole (3) is formed in the upper valve body (1), the medium hole (3) is a stepped through hole with a small upper part and a large lower part, the upper valve body (1) is in threaded connection with the lower valve body (2), the lower valve body (2) is hexagonal prism-shaped, a central hole (4) is formed in the lower valve body (2), the central hole (4) is a stepped through hole with an I-shaped cross section, the upper valve body (1) is in threaded connection with a locking nut (5), and the locking nut (5) is in contact with the lower valve body (2);
the anti-return device is characterized in that a non-return piece is arranged between the medium hole (3) and the central hole (4), the non-return piece comprises a valve core (6) and a spring (7), the valve core (6) is of an inverted-convex-shaped structure with a stepped hole (8) arranged therein, the contact surface of the valve core (6) and the central hole (4) is a conical surface, the lower end of the valve core (6) is attached to the small-diameter section of the central hole (4), the upper end of the valve core (6) is attached to the large-diameter section of the medium hole (3), a plurality of through holes (9) are formed in the lower end of the valve core (6), the spring (7) is located in the valve core (6), the lower end of the spring (7) is abutted to the upper end of the stepped hole (8) of.
2. The high-pressure check valve for water mist according to claim 1, wherein the upper valve body (1), the lower valve body (2) and the locking nut (5) are all of copper structure, and the diameter of the upper valve body (1), the outer diameter of the locking nut (5) and the outer diameter of the lower valve body (2) are increased in sequence.
3. The high-pressure check valve for water mist according to claim 2, wherein the outer wall of the upper valve body (1) is provided with external threads, the inner walls of the upper section and the lower section of the central hole (4) are provided with internal threads, and the upper valve body (1) is in threaded connection with the large-diameter section at the upper part of the central hole (4).
4. A high-pressure check valve for water mist according to claim 3, wherein the diameter of the upper valve body (1) is the same as the diameter of the large diameter section of the central bore (4).
5. The high-pressure check valve for water mist according to claim 1, wherein the valve core (6) is of molded plastic construction; the plurality of through holes (9) are uniformly distributed on the peripheral side wall of the lower end of the valve core (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921349090.XU CN210510438U (en) | 2019-08-20 | 2019-08-20 | High-pressure check valve for water mist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921349090.XU CN210510438U (en) | 2019-08-20 | 2019-08-20 | High-pressure check valve for water mist |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210510438U true CN210510438U (en) | 2020-05-12 |
Family
ID=70590458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921349090.XU Active CN210510438U (en) | 2019-08-20 | 2019-08-20 | High-pressure check valve for water mist |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210510438U (en) |
-
2019
- 2019-08-20 CN CN201921349090.XU patent/CN210510438U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 475300 south of the west section of hanghai Road, industrial cluster area, Lankao County, Kaifeng City, Henan Province Patentee after: Fuerdun Fire Technology Co.,Ltd. Address before: 457300 South of West Section of Hanghai Road, Lankao County Industrial Cluster, Kaifeng City, Henan Province Patentee before: HENAN FURD FIRE CONTROL TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 475300 south of the west section of hanghai Road, industrial cluster area, Lankao County, Kaifeng City, Henan Province Patentee after: HENAN FURD FIRE CONTROL TECHNOLOGY Co.,Ltd. Address before: 475300 south of the west section of hanghai Road, industrial cluster area, Lankao County, Kaifeng City, Henan Province Patentee before: Fuerdun Fire Technology Co.,Ltd. |