CN203067866U - Socket type silting-prevention expansion screw fastening spherical check valve - Google Patents
Socket type silting-prevention expansion screw fastening spherical check valve Download PDFInfo
- Publication number
- CN203067866U CN203067866U CN 201320108313 CN201320108313U CN203067866U CN 203067866 U CN203067866 U CN 203067866U CN 201320108313 CN201320108313 CN 201320108313 CN 201320108313 U CN201320108313 U CN 201320108313U CN 203067866 U CN203067866 U CN 203067866U
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- China
- Prior art keywords
- check valve
- top cover
- socket type
- cover body
- silk
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- Expired - Fee Related
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Abstract
The utility model discloses a socket type silting-prevention expansion screw fastening spherical check valve, which controls media, only allows the media to flow in one direction and prevents the media from flowing in a reverse direction. An upper top cover (3) of the socket type silting-prevention expansion screw fastening spherical check valve is movably buckled and connected with the upper end of a top cover body (2), a water discharge cover plate (4) is movably arranged at the inner bottom end of the top cover body (2), the top cover body (2) is fixedly arranged on the upper end of the check valve body (1) through fixed screw threads (8), a movable spherical door (6) is arranged at the inner middle part of the check valve body (1), and a expansion screw fastening mechanism is arranged at the upper end of the outer wall of the check valve body (1) and is connected with a pre-buried fixing pipe. Because of the design of the movable spherical door, the movable spherical door is automatically opened during the water discharge, the interflow with channel water is avoided, and silt is reduced. The socket type silting-prevention expansion screw fastening spherical check valve is provided with various screw threads and a rubber sealing ring, the leakage is prevented, ASA (acrylonitrile styrene acrylate) materials with the performance of ultraviolet ray resistance, aging resistance, high-temperature resistance and low-temperature resistance are adopted, the silting condition can be easily observed, and the overhauling is convenient.
Description
Technical field: the utility model relates to a kind of control media and only allows to flow to a direction, and the spigot and socket type that prevention is flowed is in the other direction prevented the fastening spherical check valve of the bloated silk of alluvial.
Background technique: against current valve is a kind of and allows medium to flow to a direction, and stops the valve that flows in the other direction.This valve is under the fluid pressure action that a direction flows, and flap is opened; When fluid flows in the other direction, by hydrodynamic pressure with overlap flap certainly and act on valve seat, flow thereby cut off, prevent from flowing backwards.Against current valve can divide according to its structure: a rise-fall type against current valve, namely flap slides along the valve body vertical center line.Two, rotary-open type against current valve, namely flap is around the outer bearing pin rotation of valve body.Three, dish formula against current valve, namely flap rotates around the bearing pin in the valve seat.Four, tubular type against current valve, namely flap slides along the valve body center line.But the restriction that the position that these against current valves are installed has, and complex structure, sealing subtracts the silt DeGrain, uses maintenance inconvenient.
The model utility content: the purpose of this utility model has been to provide a kind of preventing to cause displacement or the leakage hidden danger of the formation that comes off under not clear active force, is easy to observe the alluvial situation, the anti-fastening spherical check valve of silk that expands that deposits of the spigot and socket type of easy access.
The technological scheme that the utility model adopts for achieving the above object is: its upper top cover 3 active buckles are in top cover body 2 upper ends, water drainage cover board 4 is movably placed in bottom in the top cover body 2, top cover body 2 is fixed on check valve case 1 upper end by fixing screw thread 8, movable spheric door 6 is arranged on middle part in the check valve case 1, the silk retention mechanism that expands is arranged on check valve case 1 outer wall upper end, and is connected with pre-buried fixed tube.
The beneficial effects of the utility model are: owing to designed movable spheric door, opening automatically constantly to the check valve case internal drainage, formed independent water space, do not exchanged with outer water, reduced mud.Multiple tracks screw thread and rubber seal are set, have prevented the leakage hidden danger that under not clear active force, causes displacement or come off and form.Upper top cover and top cover body adopt antiultraviolet, anti-aging, high temperature resistant and low temperature resistant ASA material, are easy to observe the alluvial situation, easy access.And it is simple in structure, easy to use.
Description of drawings: Fig. 1 is structural representation of the present utility model
The A-A of Fig. 1 is to view during Fig. 2
Embodiment: as shown in Figure 1 and Figure 2, its upper top cover 3 active buckles are in top cover body 2 upper ends, water drainage cover board 4 is movably placed in bottom in the top cover body 2, top cover body 2 is fixed on check valve case 1 upper end by fixing screw thread 8, movable spheric door 6 is arranged on middle part in the check valve case 1, the silk retention mechanism that expands is arranged on check valve case 1 outer wall upper end, and is connected with pre-buried fixed tube.
As shown in Figure 1, the check valve case 1 outer wall upper end activity of described bloated silk retention mechanism arranges movable pressure ring 12, and flexibly connect with the following pressure ring 11 at top cover body 2 sidewalls middle part, rubber seal 9 places movable pressure ring 12 lower ends, and two rubber seal 9 were middle about isolation loose collar 13 was arranged on.
As shown in Figure 1, described movable spheric door 6 is movably placed on the seal ring 5, and places on the step at middle part in the check valve case 1.
As shown in Figure 1, in the middle part of described top cover body 2 lower wall pressure ring 11 is set down.
As shown in Figure 1 and Figure 2, described top cover body 2 inner bottom part peripheries equidistantly arrange open-work 10.
As shown in Figure 1, described check valve case 1 outer wall middle part arranges boss 7, and its upper end arranges rubber seal 9.
The utility model is made installation requirement: 1, use material to be uvioresistant, anti-aging, low temperature resistant, heat-resisting ASA material; 2,1.5 times of the anti-mud top cover water outlet area of check valve 〉=check valve water intake area; 3, be installed in and exceed concrete plane≤5cm on the check valve case, connecting means is identical with former check valve top cover screw thread; 4, drain opening cover plate proportion should be 1.2 ± 0.5; 5, the anti-mud top cover of check valve is in full closeding state under hydraulic pressure 〉=external water pressure situation in channel.
Working principle of the present utility model is: open automatically under the effect that enters water in check valve case when river or underground water are pushed movable spheric door open, river or underground water are discharged in the channel, be in closed state by hanging down certainly to acting under the normality, form independent water space, do not exchange with outer water, reduce alluvial, and it is closed to finish falling with working state.
Claims (6)
1. a spigot and socket type is prevented the fastening spherical check valve of the bloated silk of alluvial, it is characterized in that upper top cover (3) active buckle is in top cover body (2) upper end, water drainage cover board (4) is movably placed in the interior bottom of top cover body (2), top cover body (2) is fixed on check valve case (1) upper end by fixing screw thread (8), movable spheric door (6) is arranged on middle part in the check valve case (1), the silk retention mechanism that expands is arranged on check valve case (1) outer wall upper end, and is connected with pre-buried fixed tube.
2. spigot and socket type according to claim 1 is prevented the fastening spherical check valve of the bloated silk of alluvial, check valve case (1) the outer wall upper end activity that it is characterized in that described bloated silk retention mechanism arranges movable pressure ring (12), and and the following pressure ring (11) at top cover body (2) sidewall middle part flexibly connects, rubber seal (9) places movable pressure ring (12) lower end, and two rubber seal (9) were middle about isolation loose collar (13) was arranged on.
3. the fastening spherical check valve of the bloated silk of the anti-alluvial of spigot and socket type according to claim 1 is characterized in that described movable spheric door (6) is movably placed on the seal ring (5), and places on the step at middle part in the check valve case (1).
4. the fastening spherical check valve of the bloated silk of the anti-alluvial of spigot and socket type according to claim 1 is characterized in that described top cover body (2) lower wall middle part arranges down pressure ring (11).
5. the fastening spherical check valve of the bloated silk of the anti-alluvial of spigot and socket type according to claim 1 is characterized in that described top cover body (2) inner bottom part periphery equidistantly arranges open-work (10).
6. the fastening spherical check valve of the bloated silk of the anti-alluvial of spigot and socket type according to claim 1 is characterized in that described check valve case (1) outer wall middle part arranges boss (7), and its upper end arranges rubber seal (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320108313 CN203067866U (en) | 2013-02-04 | 2013-02-04 | Socket type silting-prevention expansion screw fastening spherical check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320108313 CN203067866U (en) | 2013-02-04 | 2013-02-04 | Socket type silting-prevention expansion screw fastening spherical check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203067866U true CN203067866U (en) | 2013-07-17 |
Family
ID=48766650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320108313 Expired - Fee Related CN203067866U (en) | 2013-02-04 | 2013-02-04 | Socket type silting-prevention expansion screw fastening spherical check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203067866U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103469773A (en) * | 2013-09-18 | 2013-12-25 | 长江水利委员会长江科学院 | Differential pressure amplified check valve equipment and application method |
| CN105422922A (en) * | 2015-12-25 | 2016-03-23 | 四川绵竹科力技术发展有限公司 | Special check valve for hand-operated water pump |
-
2013
- 2013-02-04 CN CN 201320108313 patent/CN203067866U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103469773A (en) * | 2013-09-18 | 2013-12-25 | 长江水利委员会长江科学院 | Differential pressure amplified check valve equipment and application method |
| CN103469773B (en) * | 2013-09-18 | 2015-04-29 | 长江水利委员会长江科学院 | Differential pressure amplified check valve equipment and application method |
| CN105422922A (en) * | 2015-12-25 | 2016-03-23 | 四川绵竹科力技术发展有限公司 | Special check valve for hand-operated water pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20150204 |
|
| EXPY | Termination of patent right or utility model |