CN218377844U - Damping-adjustable slow-closing type double-plate check valve - Google Patents
Damping-adjustable slow-closing type double-plate check valve Download PDFInfo
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- CN218377844U CN218377844U CN202222465380.9U CN202222465380U CN218377844U CN 218377844 U CN218377844 U CN 218377844U CN 202222465380 U CN202222465380 U CN 202222465380U CN 218377844 U CN218377844 U CN 218377844U
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Abstract
The utility model discloses an adjustable damping slowly-closing type double plate check valve, including valve body and valve gap, bolt fixed connection is passed through to valve body and valve gap, is provided with the valve pocket in the valve body, is provided with the valve clack in the valve pocket, is provided with first cavity and second cavity in the valve gap, is provided with the disk seat in the first cavity, and the upper end of disk seat is provided with first piston, and the outer pot head of first piston is equipped with the spring, and the upper end of second cavity is provided with the regulation cap, and the lower terminal surface of adjusting the cap is provided with the second piston, and the side end face of second cavity is provided with the gas pocket. The utility model discloses a set up gas pocket cooperation top threaded connection's regulation cap structure at the side end face of valve gap, make the regulation can adjust the intercommunication quantity of gas pocket through rotating the regulation cap, control the business turn over air current speed of second piston slip in-process second cavity to the damping of control disk seat avoids the disk seat to open soon and closes formation water hammer effect, has promoted the life and the security of equipment greatly.
Description
Technical Field
The utility model relates to a check valve technical field specifically is an adjustable damping slowly closes formula double plate check valve.
Background
The check valve is a valve whose opening and closing part is a circular valve clack and acts by its own weight and medium pressure to block the medium from flowing backwards, belonging to the automatic valve class, also called check valve, one-way valve, reflux valve or isolation valve, used to protect the pump or other key equipment in the pipeline.
The common check valve has high closing speed, is easy to generate water hammer, causes pressure to rise suddenly, has huge noise and can damage pipelines and equipment. The slow-closing check valve solves the problem caused by the quick closing of a common check valve, has the technical characteristics of slow closing and water hammer elimination, is suitable for direct water supply and drainage systems of water pumps of industrial and mining enterprises and high-rise buildings, can reduce the generation of the water hammer phenomenon, and achieves the effect of safe closing.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a slow closed double plate check valve of adjustable damping to solve the problem that the time of slowly closing can't be adjusted to the suspension return valve of prior art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an adjustable damping slow-closing type double-plate check valve, includes valve body and valve gap, valve body and valve gap pass through bolt fixed connection, be provided with the valve pocket in the valve body, be provided with the valve clack in the valve pocket, be provided with first cavity and second cavity in the valve gap, be provided with the disk seat in the first cavity, the upper end of disk seat is provided with first piston, the outer pot head of first piston is equipped with the spring, the upper end of second cavity is provided with the regulation cap, the lower terminal surface of regulation cap is provided with the second piston, the side end face of second cavity is provided with the gas pocket.
Preferably, the first piston is inserted into the first cavity and is connected with the valve cover in a sliding and sealing mode, and the sliding and sealing structure can control the rising and falling of the valve seat by controlling the air pressure in the first cavity and the air pressure in the second cavity.
Preferably, an inner thread is arranged on the inner end face of the adjusting cap, an outer thread is arranged on the top of the side end face of the valve cover, the adjusting cap and the valve cover are in threaded connection through matching of the inner thread and the outer thread, the height of the second piston can be adjusted by rotating the adjusting cap, and the number of air holes formed in the second cavity and connected with external air is controlled.
Preferably, the second piston is connected with the second cavity in a sliding and sealing mode, and the sliding and sealing structure prevents air in the second cavity from passing through a thread gap to be discharged, so that the adjusting effect is not affected.
Preferably, the lower end face of the second piston is flush with the lower end face of the adjusting cap, so that the number of the communicating air holes can be conveniently observed and controlled.
Preferably, the diameter of the first cavity is larger than that of the second cavity, so that water flow backflow caused by the fact that the second piston is sucked up by sudden air pressure change in the second cavity in the adjusting process is avoided.
Preferably, the lower terminal surface of disk seat is provided with the clamping ring, the up end of valve clack is provided with the sealing washer, through clamping ring and sealing washer cooperation, has promoted the sealed effect of disk seat with the valve clack.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a set up gas pocket cooperation top threaded connection's regulation cap structure at the side end face of valve gap, make the regulation can adjust the intercommunication quantity of gas pocket through rotating the regulation cap, control the business turn over air current speed of second piston slip in-process second cavity to the damping of control disk seat avoids the disk seat to open soon and closes formation water hammer effect, has promoted the life and the security of equipment greatly.
2. The utility model discloses a clamping ring and sealing washer cooperation have promoted the sealed effect of disk seat with the valve clack to avoid the check valve backward flow, promoted the leakproofness of check valve.
Drawings
FIG. 1 is a front cross-sectional view of the present invention;
fig. 2 is an enlarged view of a point a in fig. 1 according to the present invention;
fig. 3 is an enlarged view of the position B in fig. 1.
In the figure: the valve comprises a valve body 1, a valve clack 11, a sealing ring 111, a valve cavity 12, a valve cover 2, a first cavity 21, a second cavity 22, an air hole 221, an adjusting cap 3, a second piston 31, a valve seat 4, a first piston 41, a spring 42 and a pressure ring 43.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
Example 1
Referring to fig. 1 and 3, the damping-adjustable slow-closing type double-plate check valve in the figures includes a valve body 1 and a valve cover 2, the valve body 1 and the valve cover 2 are fixedly connected through a bolt, a valve cavity 12 is disposed in the valve body 1, a valve flap 11 is disposed in the valve cavity 12, a first cavity 21 and a second cavity 22 are disposed in the valve cover 2, a valve seat 4 is disposed in the first cavity 21, a first piston 41 is disposed at the upper end of the valve seat 4, a spring 42 is sleeved at the outer end of the first piston 41, an adjusting cap 3 is disposed at the upper end of the second cavity 22, a second piston 31 is disposed at the lower end face of the adjusting cap 3, and an air hole 221 is disposed at the side end face of the second cavity 22.
The first piston 41 is inserted into the first cavity 21 and is connected with the valve cover 2 in a sliding and sealing manner, and the sliding and sealing structure can control the lifting of the valve seat 4 by controlling the air pressure in the first cavity 21 and the second cavity 22.
The inner end face of the adjusting cap 3 is provided with an internal thread, the top of the side end face of the valve cover 2 is provided with an external thread, and the adjusting cap 3 and the valve cover 2 are in threaded connection through matching of the internal thread and the external thread, so that the height of the second piston 31 can be adjusted by rotating the adjusting cap 3, and the quantity of the air holes 221 of the second cavity 22, which are connected with external air, is controlled.
The second piston 31 is connected with the second cavity 22 in a sliding and sealing manner, and the sliding and sealing structure prevents air in the second cavity 22 from passing through a thread gap to be discharged, so that the adjusting effect is influenced.
The lower end face of the second piston 31 is flush with the lower end face of the adjusting cap 3, so that the number of the communicating air holes 221 can be conveniently observed and controlled.
The diameter of the first cavity 21 is larger than that of the second cavity 22, so that the phenomenon that the second piston 31 is sucked up by sudden change of air pressure in the second cavity 22 to cause water flow backflow in the adjusting process is avoided.
The lower terminal surface of disk seat 4 is provided with clamping ring 43, and the up end of valve clack 11 is provided with sealing washer 111, through clamping ring 43 and the cooperation of sealing washer 111, has promoted disk seat 4 and valve clack 11's sealed effect.
This check valve is when using: when rivers forward flow, rivers are by valve flap 11 lower extreme jack-up disk seat 4 that makes progress, thereby make first piston 41 extrusion first cavity 21, make the air in the first cavity 21 discharge by gas pocket 221, after the rivers pass through, disk seat 4 pushes down at spring 42's reset action, thereby make the outside air get into in the second cavity 22 by gas pocket 221, when the gliding damping about needs adjusting disk seat 4, through rotating adjusting cap 3, thereby make second piston 31 slide from top to bottom, adjust the gas pocket 221 quantity that second cavity 22 and outside air are connected, adjust the rate of giving vent to anger, thereby adjust gliding damping about disk seat 4.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides an adjustable damping slow-closure type double plate check valve which characterized in that includes:
the valve comprises a valve body (1) and a valve cover (2), wherein the valve body (1) and the valve cover (2) are fixedly connected through a bolt, a valve cavity (12) is formed in the valve body (1), a valve clack (11) is formed in the valve cavity (12), a first cavity (21) and a second cavity (22) are formed in the valve cover (2), a valve seat (4) is formed in the first cavity (21), a first piston (41) is arranged at the upper end of the valve seat (4), a spring (42) is sleeved at the outer end of the first piston (41), an adjusting cap (3) is arranged at the upper end of the second cavity (22), a second piston (31) is arranged on the lower end face of the adjusting cap (3), and an air hole (221) is formed in the side end face of the second cavity (22).
2. The adjustable damping slow-closing double-plate check valve as claimed in claim 1, wherein: the first piston (41) is inserted into the first cavity (21) and is connected with the valve cover (2) in a sliding and sealing mode.
3. The adjustable damping slow-closing double-plate check valve as claimed in claim 1, wherein: the inner end face of the adjusting cap (3) is provided with internal threads, the top of the side end face of the valve cover (2) is provided with external threads, and the adjusting cap (3) is in threaded connection with the valve cover (2) through matching of the internal threads and the external threads.
4. The adjustable damping slow-closing type double-plate check valve according to claim 1, characterized in that: the second piston (31) is connected with the second cavity (22) in a sliding and sealing mode.
5. The adjustable damping slow-closing double-plate check valve as claimed in claim 1, wherein: the lower end face of the second piston (31) is flush with the lower end face of the adjusting cap (3).
6. The adjustable damping slow-closing double-plate check valve as claimed in claim 1, wherein: the diameter of the first cavity (21) is larger than that of the second cavity (22).
7. The adjustable damping slow-closing double-plate check valve as claimed in claim 1, wherein: the lower terminal surface of disk seat (4) is provided with clamping ring (43), the up end of valve clack (11) is provided with sealing washer (111).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222465380.9U CN218377844U (en) | 2022-09-16 | 2022-09-16 | Damping-adjustable slow-closing type double-plate check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222465380.9U CN218377844U (en) | 2022-09-16 | 2022-09-16 | Damping-adjustable slow-closing type double-plate check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218377844U true CN218377844U (en) | 2023-01-24 |
Family
ID=84952448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222465380.9U Active CN218377844U (en) | 2022-09-16 | 2022-09-16 | Damping-adjustable slow-closing type double-plate check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218377844U (en) |
-
2022
- 2022-09-16 CN CN202222465380.9U patent/CN218377844U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230310 Address after: 300302 Building A1 in the Impeccable Industrial Park, Dongli District, Tianjin City Patentee after: Tianjin Fenglin Kaifa Valve Co.,Ltd. Address before: 300451 yuzhuangzi village, Hujiayuan street, Tanggu, Binhai New Area, Tianjin Patentee before: Tianjin Kaifa Valve Co.,Ltd. |
|
| TR01 | Transfer of patent right |