CN212107048U - Axial-flow type check valve for low temperature - Google Patents
Axial-flow type check valve for low temperature Download PDFInfo
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- CN212107048U CN212107048U CN202020495825.6U CN202020495825U CN212107048U CN 212107048 U CN212107048 U CN 212107048U CN 202020495825 U CN202020495825 U CN 202020495825U CN 212107048 U CN212107048 U CN 212107048U
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- low temperature
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Abstract
The utility model relates to a low temperature valve technical field is an axial-flow type check valve for low temperature particularly, including the valve body, set up the disk seat in the valve body, set up the valve clack that is used for sealed disk seat in the valve body, its characterized in that: the valve comprises a valve body, a valve clack, a spring seat, a spring, an annular sealing piece, a guide plate, a plurality of guide holes, a piston cavity, a pressure balance hole, a plurality of stepped surfaces, a lip-shaped sealing ring, a sealing section and a sealing performance, wherein the spring seat is arranged in the valve body; a piston cavity is formed by the spring seat, the annular sealing element and the guide plate, and a discharge opening is formed in the piston cavity, so that the valve clack is opened slowly, and the valve body is prevented from being directly impacted by the valve clack.
Description
Technical Field
The utility model relates to a low temperature valve technical field is an axial-flow type check valve for low temperature particularly.
Background
The check valve is an important component in a pipeline system and is key equipment for ensuring the safe and reliable operation of the pipeline system. With the development of petroleum and chemical engineering, the working conditions of the pipeline system are more and more complex and harsh, the working parameters are higher and higher, and the common check valve is difficult to meet the development requirements of the pipeline system. The axial flow check valve has the advantages of good sealing performance, quick closing, small closing impact, pressure reduction, small mechanical vibration, low noise, small volume, light weight, long service life and the like, and is widely applied in recent years. The axial flow type check valve for low temperature has the advantages of simple structure, simple and convenient processing and installation and higher reliability.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve prior art not enough, provide an axial-flow type check valve for low temperature.
In order to realize above-mentioned purpose, design an axial-flow type check valve for low temperature, including the valve body, set up the disk seat in the valve body, set up the valve clack that is used for sealed disk seat in the valve body, its characterized in that: the valve is characterized in that a spring seat is arranged in the valve body, a spring is arranged on the spring seat, one end of the spring is connected with the spring seat, the other end of the spring is connected with the valve clack, an annular sealing part is arranged on one side of the spring seat, a guide plate is arranged on the valve clack, a plurality of flow guide holes are formed in the guide plate, the annular sealing part and the spring seat form a piston cavity, and a pressure balance hole is formed.
The valve body and the valve seat connecting part are provided with a plurality of stepped structures, and the valve seat is provided with a stepped structure matched with the stepped structure of the valve body.
A lip-shaped sealing ring is arranged between the valve body and the stepped structure in the middle of the valve seat.
The spring seat is provided with a step structure, and the annular sealing space is matched with the step structure of the spring seat.
Compared with the prior art, the utility model, its advantage lies in:
1. a plurality of stepped surfaces are arranged between the valve seat and the valve body, and the lip-shaped sealing ring is arranged on the middle stepped surface, so that the processing precision of the sealing section is ensured, and the sealing performance is further ensured;
2. a piston cavity is formed by the spring seat, the annular sealing element and the guide plate, and a discharge opening is formed in the piston cavity, so that the valve clack is opened slowly, and the valve body is prevented from being directly impacted by the valve clack.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
in the figure: 1. the valve comprises a valve body 2, a valve seat pressing ring 3, a valve seat 4, a lip-shaped sealing ring 5, a valve clack 6, a spring guide seat 7, a spring 8, a spring seat 9, a guide plate 10, a piston cavity 11 and a pressure balancing hole.
Detailed Description
The structure and principle of such a device will be apparent to those skilled in the art from the following further description of the invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The utility model provides an axial-flow type check valve is used to low temperature, including valve body, valve clack, disk seat clamping ring, install the lip type sealing washer on the disk seat, with the spring holder of threaded fixation on the valve body inner chamber, install the spring on the spring holder.
The valve body is of a cylindrical structure; the space of the inner cavity of the valve body is large, so that the valve body is convenient to process;
a lip-shaped sealing ring is arranged between the valve body and the valve seat;
the valve seat is matched with the valve body to form a plurality of steps, and the lip-shaped sealing ring is arranged on the step surface of the middle section, so that the processing precision of the sealing section is ensured, and the sealing performance is further ensured;
the valve seat is fixed by a valve seat pressing ring, and the valve seat pressing ring is arranged on the valve body and fixed by screws;
the spring seat is arranged on the inner cavity of the valve body, and a threaded structure is used, so that the valve is simple and convenient;
the spring seat is provided with a pressure balance hole which can play a role in buffering when being opened and closed;
the spring is arranged on the spring seat, and the other end of the spring is contacted with the valve clack;
the valve clack is structurally provided with a guide plate which is matched with an inner cavity of the valve body to control the motion track of the valve clack.
During the installation, install spring guide holder 6 on valve clack 5 earlier, use threaded connection, then pack into valve body 1 with valve clack 5 in, will be equipped with in the disk seat installation valve body 1 of lip type sealing washer 4 again, be provided with the screw hole on the disk seat clamping ring 2, make seat 3 and valve body 1 fixed, the installation is simple. Afterwards, the spring 7 and the spring seat 8 are installed from the other end of the valve body 1, the spring seat 8 is in threaded connection with the valve body 1, and the valve is simple in structure and convenient to operate. The spring seat 8 is provided with a pressure balance hole 11, the valve clack 5 is provided with a guide plate 9, and the guide plate 9 is provided with a plurality of flow guide holes.
The check valve has only one direction of flow, and therefore has requirements on the installation direction. When the pressure of A end is higher than the pressure of B end and the resultant force of spring 7, valve clack 5 opens, when pressure difference increases, spring 7 unifies and plays the cushioning effect, avoid the valve clack direct impact to valve body 1 on, simultaneously, deflector C on the valve clack 5 and the 1 inner chamber of valve body form a piston space, balancing hole D on the spring holder 8 also can play the cushioning effect, equally, when the pressure of B side is higher than the pressure of A side, spring 7 and balancing hole D also can play the effect of buffering, make valve clack and disk seat can not damage because of receiving serious striking when opening and closing.
Claims (4)
1. The utility model provides an axial-flow type check valve is used to low temperature, includes the valve body, sets up the disk seat in the valve body, sets up the valve clack that is used for sealed disk seat in the valve body, its characterized in that: the valve is characterized in that a spring seat is arranged in the valve body, a spring is arranged on the spring seat, one end of the spring is connected with the spring seat, the other end of the spring is connected with the valve clack, an annular sealing part is arranged on one side of the spring seat, a guide plate is arranged on the valve clack, a plurality of flow guide holes are formed in the guide plate, the annular sealing part and the spring seat form a piston cavity, and a pressure balance hole is formed.
2. The axial flow type check valve for low temperature as set forth in claim 1, wherein: the valve body and the valve seat connecting portion are provided with a plurality of stepped structures, and the valve seat is provided with a stepped structure matched with the stepped structure of the valve body.
3. The axial flow type check valve for low temperature as set forth in claim 2, wherein: and a lip-shaped sealing ring is arranged between the valve body and the stepped structure in the middle of the valve seat.
4. The axial flow type check valve for low temperature as set forth in claim 1, wherein: the spring seat is provided with a step structure, and the annular sealing space is matched with the step structure of the spring seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020495825.6U CN212107048U (en) | 2020-04-08 | 2020-04-08 | Axial-flow type check valve for low temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020495825.6U CN212107048U (en) | 2020-04-08 | 2020-04-08 | Axial-flow type check valve for low temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212107048U true CN212107048U (en) | 2020-12-08 |
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ID=73629885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020495825.6U Active CN212107048U (en) | 2020-04-08 | 2020-04-08 | Axial-flow type check valve for low temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212107048U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11976747B2 (en) | 2019-03-20 | 2024-05-07 | Danfoss A/S | Compressor unit with a damped axial check valve for a discharge outlet |
-
2020
- 2020-04-08 CN CN202020495825.6U patent/CN212107048U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11976747B2 (en) | 2019-03-20 | 2024-05-07 | Danfoss A/S | Compressor unit with a damped axial check valve for a discharge outlet |
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