CN203322398U - Backflow prevention device - Google Patents
Backflow prevention device Download PDFInfo
- Publication number
- CN203322398U CN203322398U CN2013201944660U CN201320194466U CN203322398U CN 203322398 U CN203322398 U CN 203322398U CN 2013201944660 U CN2013201944660 U CN 2013201944660U CN 201320194466 U CN201320194466 U CN 201320194466U CN 203322398 U CN203322398 U CN 203322398U
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- CN
- China
- Prior art keywords
- backflow prevention
- supporting frame
- spheroid
- arc supporting
- counterflow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a backflow prevention device which comprises a backflow prevention pipe, a movable sphere and an arc support frame, wherein the backflow prevention pipe is an outer casing of the backflow prevention device, the outer surface of the backflow prevention pipe is in an arc shape or a cylindrical shape larger than the diameter of a connecting pipe, and two ends of the backflow prevention pipe are connected with the connecting pipe through flanges; and the inner wall of an internal liquid inflow segment is spherical; the movable sphere can be connected and sealed with the spherical surface; and the movable sphere is placed on the arc support frame, can move back and forth on the arc support frame, and doesn't fall. The backflow prevention device can effectively prevent a pipeline liquid backflow phenomenon, and is simple in structure, easy to implement and convenient to mount and maintain.
Description
Technical field
The utility model relates to the fluid circuit control gear, particularly a kind of Counterflow-proof device that prevents that fluid from flowing backwards.
Background technique
In fluid line, often by power source, for flowing, the fluid in pipeline provides power, and fluid is flowed in a certain direction.When power source quits work or pipeline while unusual condition occurring; ducted fluid often there will be the phenomenon of refluence; cause the pollution of equipment or the damage of power source equipment; thereby the operation that impact is produced; when serious, security incident can occur; the safety of life-threatening and property, thereby in fluid circuit, through being everlasting, need the place of anti-back flow that anti-backflow device often is installed.Anti-backflow device in the market is of a great variety, but the dull and stereotyped sealing means of most employing is poorly sealed close, easily produces the phenomenon that a small amount of fluid refluxes.
The model utility content
The purpose of this utility model is that a kind of Counterflow-proof device is provided in order to address the above problem, and sealing means of the present utility model adopts ball face sealing, can effectively prevent that the fluid backflow phenomenon from occurring, and easy for installation, realizes easily, easy to maintenance quick.
The utility model is to consist of anti-back flow pipe, movable spheroid and arc supporting frame, the shell of anti-back flow Guan Weiben Counterflow-proof device, outer surface is arc or the cylindrical shape larger than connecting tube caliber, two ends are connected with connecting tube with flange, the inwall that internal flow flows into section is sphere, and movable spheroid can seal with sphere-contact; Movable spheroid is placed on the arc supporting frame, movable and do not drop before and after can be on the arc supporting frame.
The steel ball that described movable spheroid is entity steel ball or hollow, outer sleeving plastic, rubber or other materials, the overcoat material determines according to the character of fluid, the size of inner steel ball or hollow degree are determined according to rate of flow of fluid, pressure and other parameters.
Described arc supporting frame is two steel structures that are welded on anti-back flow pipe inside, surface smoothing, and afterbody flows out direction to fluid and upwarps, and assurance activity spheroid is movable and do not drop on the arc supporting frame.
The beneficial effects of the utility model:
The utility model is used ball face sealing according to movable spheroid, can effectively prevent the generation of fluid refluence phenomenon.
The utility model is simple in structure, easy for installation.
The accompanying drawing explanation
Fig. 1 is the structural representation of the utility model fluid while normally flowing into.
Fig. 2 is the plan view of the arc supporting frame of the utility model.
To be the utility model flow into or structural representation during the refluence state without fluid Fig. 3.
Wherein, 1-anti-back flow pipe; 2-movable spheroid; 3-arc supporting frame; 4-flange; 5-connecting tube.
Embodiment
Refer to shown in Fig. 1, the present embodiment is to consist of anti-back flow pipe 1, movable spheroid 2 and arc supporting frame 3, the outer surface of anti-back flow pipe 1 is arc or the cylindrical shape larger than connecting tube 5 calibers, two ends are connected with connecting tube 5 with flange 4, the inwall that internal flow flows into section is sphere 11, and movable spheroid 2 can contact sealing with sphere 11; Movable spheroid 2 is placed on arc supporting frame 3, movable and do not drop before and after can be on arc supporting frame 3; Movable spheroid 2 is entity steel ball or hollow steel ball, outer sleeving plastic, rubber or other materials, and the overcoat material determines according to the character of fluid, the size of inner steel ball and hollow degree are determined according to rate of flow of fluid, pressure and other parameters.
As shown in Figure 2, arc supporting frame 3 is for being welded on two steel structures of anti-back flow pipe 1 inside, surface smoothing, and afterbody flows out direction to fluid and upwarps, and assurance activity spheroid is movable and do not drop on the arc supporting frame.
Working procedure of the present utility model and principle are:
When the normal feed liquor of Counterflow-proof device or air inlet, movable spheroid 2 is subject to fluid impact to face the wall and meditate 11 along arc supporting frame 3 away from the endosphere of anti-back flow pipe 1, and fluid passes through from the spheroid surrounding, as shown in Figure 1; When Counterflow-proof device does not have feed liquor or air inlet, as shown in Figure 3, movable spheroid 2 is because the endosphere that Action of Gravity Field slides to anti-back flow pipe 1 faces the wall and meditates 11, face the wall and meditate and 11 be close to sealing with endosphere, when Counterflow-proof device occurs to flow backwards, due to fluid impact extruding, movable spheroid 2 and the endosphere of anti-back flow pipe 1 close 11 envelopes of facing the wall and meditating are tightr, thereby prevent fluid reverse flow mistake.
Claims (4)
1. a Counterflow-proof device, it is characterized in that: be to be formed by anti-back flow pipe (1), movable spheroid (2) and arc supporting frame (3), the outer surface of anti-back flow pipe (1) is than large arc or the cylindrical shape of connecting tube (5) caliber, flange for two ends (4) is connected with connecting tube (5), the inwall that internal flow flows into section is sphere (11), and movable spheroid (2) can contact sealing with sphere (11); It is upper that movable spheroid (2) is placed on arc supporting frame (3), can not drop in arc supporting frame (3) upper front and back activity.
2. a kind of Counterflow-proof device according to claim 1, it is characterized in that: described movable spheroid (2) is entity steel ball or hollow steel ball.
3. a kind of Counterflow-proof device according to claim 1, is characterized in that: the outer sleeving plastic of described movable spheroid (2) or rubber.
4. a kind of Counterflow-proof device according to claim 1, it is characterized in that: described arc supporting frame (3) is for being welded on two inner steel structures of anti-back flow pipe (1), surface smoothing, afterbody flows out direction to fluid and upwarps, and assurance activity spheroid (2) does not drop in the upper activity of arc supporting frame (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201944660U CN203322398U (en) | 2013-04-17 | 2013-04-17 | Backflow prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201944660U CN203322398U (en) | 2013-04-17 | 2013-04-17 | Backflow prevention device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203322398U true CN203322398U (en) | 2013-12-04 |
Family
ID=49661750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201944660U Expired - Lifetime CN203322398U (en) | 2013-04-17 | 2013-04-17 | Backflow prevention device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203322398U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096930A (en) * | 2020-09-18 | 2020-12-18 | 淄博高新区成大机械设计研究所 | Straight-flow ball sealing check valve and use method thereof |
| CN114962742A (en) * | 2022-04-26 | 2022-08-30 | 秦皇岛天沐冶金机械设备制造有限公司 | Coal injection backfire-proof device |
-
2013
- 2013-04-17 CN CN2013201944660U patent/CN203322398U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096930A (en) * | 2020-09-18 | 2020-12-18 | 淄博高新区成大机械设计研究所 | Straight-flow ball sealing check valve and use method thereof |
| CN112096930B (en) * | 2020-09-18 | 2022-11-25 | 浙江冠霖阀门有限公司 | Straight-flow ball sealing check valve and using method thereof |
| CN114962742A (en) * | 2022-04-26 | 2022-08-30 | 秦皇岛天沐冶金机械设备制造有限公司 | Coal injection backfire-proof device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131204 |
|
| CX01 | Expiry of patent term |