CN204664531U - A kind of low pressure auto-drainage device - Google Patents
A kind of low pressure auto-drainage device Download PDFInfo
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- CN204664531U CN204664531U CN201520335499.1U CN201520335499U CN204664531U CN 204664531 U CN204664531 U CN 204664531U CN 201520335499 U CN201520335499 U CN 201520335499U CN 204664531 U CN204664531 U CN 204664531U
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- spool
- connecting shaft
- valve body
- diaphragm
- spring
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Abstract
The utility model provides a kind of low pressure auto-drainage device, comprises upper shell and valve body, is wherein vertically provided with spring in the inside of upper shell, and the upper end of spring is connected with adjusting screw, and the lower end of spring is connected with diaphragm; Be installed with spool connecting shaft in the center of diaphragm, the upper end of spool connecting shaft is fixed on diaphragm by set screw nut, and the lower end of spool connecting shaft extend in valve body; The inside of described valve body is cavity structure, and its one end open is in the horizontal direction as water intake, and the other end opening is as drain opening; The lower end of described spool connecting shaft is provided with spool, and spool is used for the opening of shutoff valve inner.The utility model, can at the occasion automatic operation of nothing electricity without gas without the need to external energy, and drainage pressure setting is convenient, installs simple and reliable, can on-line maintenance.
Description
Technical field
The utility model relates to a kind of industrial water draw-off, is specifically related to a kind of Industrial cooling tower water supply pipeline low pressure auto-drainage device.
Background technique
North of china in winter enters freeze up period, and Industrial cooling tower needs manually to open the water in emptying valve discharge conduit after shutting down; once forget manual sluicing; light then cause cooling tower and water supply pipeline to freeze, heavy then cause device damage and pipeline to be split up, there is accident potential.
At present, commercially existing all kinds of valve, all can not realize low pressure automatic drainage function.
Model utility content
For above deficiency, the utility model provides a kind of low pressure auto-drainage device.
The utility model is realized by following proposal: a kind of low pressure auto-drainage device, comprises upper shell and valve body, is wherein vertically provided with spring in the inside of upper shell, and the upper end of spring is connected with adjusting screw, and the lower end of spring is connected with diaphragm; Be installed with spool connecting shaft in the center of diaphragm, the upper end of spool connecting shaft is fixed on diaphragm by set screw nut, and the lower end of spool connecting shaft extend in valve body; The inside of described valve body is cavity structure, and its one end open is in the horizontal direction as water intake, and the other end opening is as drain opening; The lower end of described spool connecting shaft is provided with spool, and spool is used for the opening of shutoff valve inner.
The bottom of described valve body is provided with bottom, can convenient for maintaining and maintenance.
Technique effect of the present utility model:
1, in the utility model, form assemblying body by spool connecting shaft, diaphragm and spool, realize opening and closedown of valve by moving up and down of assemblying body;
2, by regulating adjusting screw to change the length of spring, and then change the downward active force P1 of spring action at diaphragm and spool, thus realize the critical pressure that regulating valve opens and closes.
In sum, the utility model, can at the occasion automatic operation of nothing electricity without gas without the need to external energy, and drainage pressure setting is convenient, installs simple and reliable, can on-line maintenance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
A kind of low pressure auto-drainage device as shown in Figure 1, comprises upper shell 3 and valve body 7, is wherein vertically provided with spring 2 in the inside of upper shell 3, and the upper end of spring 2 is connected with adjusting screw 1, and the lower end of spring 2 is connected with diaphragm 5; Be installed with spool connecting shaft 6 in the center of diaphragm 5, the upper end of spool connecting shaft 6 is fixed on diaphragm 5 by set screw nut 4, and the lower end of spool connecting shaft 6 extend in valve body 7; The inside of described valve body 7 is cavity structure, and its one end open is in the horizontal direction as water intake, and the other end opening is as drain opening, and described water intake is connected with outer water tube road respectively by flange 8 with drain opening; The lower end of described spool connecting shaft 6 is provided with spool 9, and spool 9 is for the valve port 11 of shutoff valve body 7 inside.The bottom of described valve body 7 is provided with bottom 10.
Working principle: the downward active force that setting spring acts on diaphragm and spool is P1, in valve body, the upwards active force of liquid effects on diaphragm is P2, and when equipment normally runs, due to P2>P1, now valve port 11 is closed, and stops sluicing; When equipment downtime, P2<P1, now valve port 11 is opened, and releases the water in pipeline.
Claims (2)
1. a low pressure auto-drainage device, it is characterized in that: comprise upper shell (3) and valve body (7), wherein vertically be provided with spring (2) in the inside of upper shell (3), the upper end of spring (2) is connected with adjusting screw (1), and the lower end of spring (2) is connected with diaphragm (5); Be installed with spool connecting shaft (6) in the center of diaphragm (5), the upper end of spool connecting shaft (6) is fixed on diaphragm (5) by set screw nut (4), and the lower end of spool connecting shaft (6) extend in valve body (7); The inside of described valve body (7) is cavity structure, and its one end open is in the horizontal direction as water intake, and the other end opening is as drain opening; The lower end of described spool connecting shaft (6) is provided with spool (9), and spool (9) is for the opening (11) of shutoff valve body (7) inside.
2. a kind of low pressure auto-drainage device as claimed in claim 1, is characterized in that: the bottom of described valve body (7) is provided with bottom (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520335499.1U CN204664531U (en) | 2015-05-22 | 2015-05-22 | A kind of low pressure auto-drainage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520335499.1U CN204664531U (en) | 2015-05-22 | 2015-05-22 | A kind of low pressure auto-drainage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204664531U true CN204664531U (en) | 2015-09-23 |
Family
ID=54134914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520335499.1U Active CN204664531U (en) | 2015-05-22 | 2015-05-22 | A kind of low pressure auto-drainage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204664531U (en) |
-
2015
- 2015-05-22 CN CN201520335499.1U patent/CN204664531U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |