CN202401428U - Differential pressure control type high-precision check valve device - Google Patents
Differential pressure control type high-precision check valve device Download PDFInfo
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- CN202401428U CN202401428U CN 201220009536 CN201220009536U CN202401428U CN 202401428 U CN202401428 U CN 202401428U CN 201220009536 CN201220009536 CN 201220009536 CN 201220009536 U CN201220009536 U CN 201220009536U CN 202401428 U CN202401428 U CN 202401428U
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- inner chamber
- container wall
- inner cavity
- elastic film
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Abstract
A differential pressure control type high-precision check valve device comprises an outer cavity thin-wall container wall. A first water outlet and a second water outlet are arranged on one side of the outer cavity thin-wall container wall, and a water inlet is arranged on the other side of the outer cavity thin-wall container wall. An inner cavity formed by airtight connection of an inner cavity lower container wall and an inner cavity upper container wall is arranged in a container outer cavity formed in the outer cavity thin-wall container wall, and the inner cavity is divided into an upper inner cavity and a lower inner cavity through an elastic film arranged in the inner cavity. The inner cavity lower container wall is fixedly connected and communicated with the first water outlet, a water inlet-outlet channel is arranged on the inner cavity upper container wall, a triangular support is fixedly connected onto the inner cavity upper container wall, the elastic film and a piston rod are fixedly connected, the piston rod penetrates through the inner cavity upper container wall to be hinged with a balanced bar which is hinged with the triangular support, a groove is arranged on the position of the balanced bar corresponding to the second water outlet, and an elastic film pad is fixed in the groove. The differential pressure control type high-precision check valve device improves opening accuracy of a check valve, and can achieve the automatic switch function under low water pressure difference during unattended operation.
Description
Technical field
The utility model relates to the hydraulic engineering technical field, specifically is a kind of pressure reduction control type high accuracy non retern valve equipment.
Background technology
In the design of canal for water conveyance and construction, in order to improve channel hydraulic pipeline efficient, stop or reduce by channel and infiltrate the canal bed loss water yield, need carry out the seepage control project measure to canal for water conveyance.Anti-seepage of channels engineering measure is on the canal bed, to lay geomembrane, on geomembrane, lays the rigidity lining cutting.Because the rigidity lining thickness is very thin, when water level under the canal hillside fields was higher than in the channel water level 10～15cm, water pressure was floated liner plate and is destroyed, and this is that a condition is harsh and be difficult to the thorny problem of stability and safety.
The approach that addresses this problem at present is to adopt the draining measures to reduce stresses, reduces head difference as far as possible.This just relates to the single slope drainage valve is non retern valve, and through non retern valve, the water in the channel can not flow to outside the channel, and when the head outside the channel was higher than in the channel, the outer water of channel can freely flow in the channel.Present existing non retern valve, one Chinese patent application CN85107804 disclose a kind of controllable type non retern valve, bottom valve, and it is the switching of adopting artificial way control flashboard, can not realize the function of automatic switch; One Chinese patent application CN200620006928.1 discloses a kind of anti-seepage channel reverse drainage non retern valve; It is to adopt the mode of spring to seal outfall; Its head opening pressure surpasses 50cm, all can not effectively solve present canal slope stability problem, and the unlatching precision of non retern valve is not enough.
Summary of the invention
The utility model provides a kind of pressure reduction control type high accuracy non retern valve equipment, has improved the unlatching precision of non retern valve, can realize the function of unmanned automatic switch under low differential water pressures condition; Folk prescription that can controlled water flow is to passing through, and satisfying the outer water of channel can freely flow in the channel, and water can not flow to the outer requirement of channel in the channel, thus the steadiness that improves anti-seepage channel with increase the service life.
A kind of pressure reduction control type high accuracy non retern valve equipment comprises exocoel thin-walled pressure vessel wall, and a side of cavity thin-wall chamber wall is provided with first delivery port and second delivery port outside; The opposite side of cavity thin-wall chamber wall is provided with water inlet outside; Be provided with chamber wall and inner chamber upper container wall under the inner chamber in the container exocoel that forms in the exocoel thin-walled pressure vessel wall, chamber wall and inner chamber upper container wall are airtight under the said inner chamber is connected to form an inner chamber, and the elastic film that said inner chamber is set at wherein is separated into inner chamber and lower inner cavity; Chamber wall is fixedly connected with said first delivery port and communicates under the said inner chamber; On the said inner chamber upper container wall Inlet and outlet water passage is set, is fixedly connected with tripod on the said inner chamber upper container wall, elastic film is fixedly connected with piston rod; Piston rod passes behind the inner chamber upper container wall hinged with balancing pole; Balancing pole and tripod are hinged, and corresponding second delivery port is provided with groove on the balancing pole, is fixed with the elastic film pad in the said groove.
Chamber wall is connected with bolt with inner chamber upper container wall under the aforesaid pressure reduction control type high accuracy non retern valve equipment, the periphery of said elastic film and inner chamber.
Aforesaid pressure reduction control type high accuracy non retern valve equipment, elastic film is fixedly connected with piston rod and is specially: the center of elastic film is fixedly connected with piston rod with connecting bolt.
The utility model adopts elastic film to increase the expansion principle of active force and opplied moment; Start head less than 5 centimetres; When water level was higher than the channel water level under the canal hillside fields, non retern valve can be opened draining automatically, when the channel water level is higher than under the canal hillside fields water level; Non retern valve can be closed automatically, stops ditch water flow to go into Qu Po; Owing to utilized peritonaeum technology and lever principle, improved the unlatching precision of non retern valve, realized the function of unmanned automatic switch under low differential water pressures condition, even if under low head condition also leakproof phenomenon, more existing non retern valve has obvious improvement.
Description of drawings
Fig. 1 is the structural representation of the utility model pressure reduction control type high accuracy non retern valve;
Fig. 2 is that sketch is installed in the application of the utility model pressure reduction control type high accuracy non retern valve on channel side slopes.
Among the figure: 1-first delivery port; 2-exocoel thin-walled pressure vessel wall; Chamber wall under the 3-inner chamber; The 4-lower inner cavity; The 5-elastic film; The last inner chamber of 6-; 7-inner chamber upper container wall; 8-Inlet and outlet water passage; 9,12,17-connecting bolt; 10-container exocoel; 11-second delivery port; The 13-piston rod; The 14-tripod; The 15-balancing pole; 16-elastic film pad; The 18-water inlet; The 19-expansion bolt; The 20-sealing collar.
The specific embodiment
To combine the accompanying drawing in the utility model below, the technical scheme in the utility model will be carried out clear, intactly description.
Please refer to Fig. 1; The utility model provides a kind of pressure reduction control type high accuracy non retern valve equipment; Comprise exocoel thin-walled pressure vessel wall 2, a side of cavity thin-wall chamber wall 2 is provided with first delivery port 1 and second delivery port 11 outside, and the opposite side of cavity thin-wall chamber wall 2 is provided with water inlet 18 outside.Be provided with chamber wall 3 and inner chamber upper container wall 7 under the inner chamber in the container exocoel 10 that forms in the exocoel thin-walled pressure vessel wall 2; Chamber wall 3 and inner chamber upper container wall 7 are airtight under the said inner chamber is connected to form an inner chamber, and the elastic film 5 that said inner chamber is set at wherein is separated into inner chamber 6 and lower inner cavity 4.Chamber wall 3 is fixedly connected with said first delivery port 1 and communicates under the said inner chamber, on the said inner chamber upper container wall 7 the turnover water channel 8 is set, and is fixedly connected with tripod 14 on the said inner chamber upper container wall 7.Chamber wall 3 is connected with inner chamber upper container wall 7 usefulness bolt under the periphery of said elastic film 5 and the inner chamber; The center of elastic film 5 is fixedly connected with piston rod 13 with connecting bolt 12; It is hinged with balancing pole 15 usefulness connecting bolts 9 that piston rod 13 passes inner chamber upper container wall 7 backs; Balancing pole 15 is hinged with tripod 14 usefulness connecting bolts 17, and corresponding second delivery port 11 is provided with groove on the balancing pole 15, is fixed with elastic film pad 16 in the said groove.
Please refer to Fig. 2, when above-mentioned pressure reduction control type high accuracy non retern valve is installed in channel side slopes, when construction of concrete face slab, reserve installing hole, the water inlet 18 of non retern valve adopted flexible pipe to be connected with geomembrane when non retern valve was installed; Between non retern valve and concrete panel, put sealing collar 20, adopt expansion bolt 19 that valve face plate and concrete panel are fixed.During maintenance, unclamp expansion bolt 19, take out non retern valve and get final product.Its operating principle is: when the water level of operation current in the channel is higher than in the channel side slopes water level; When the head of first delivery port 1, second delivery port 11 is higher than the head of water inlet 18 (for example 5cm), because the pressure of first delivery port 1 and second delivery port 11 is equal, and the area of elastic film 5 is much larger than the area of second delivery port 11; Therefore the power on the elastic film 5 of acting on is much larger than the power that acts on balancing pole 15 places on second delivery port 11; Cause in the inner chamber elastic film 5 upwards inner chamber 6 move, the mobile balancing pole 15 that makes through coupled piston bar 13 rotates, the moment of piston rod 13 is 10 times of second delivery port, 11 moments at least simultaneously; Elastic film pad 16 on the balancing pole 13 is abutted against on second delivery port 11; Thereby form the sealing state, non retern valve is closed, and guarantees that current do not flow to side slope in the channel; When the water level of operation current in the channel is lower than in the channel side slopes water level; The head of first delivery port 1, second delivery port 11 is lower than the head of water inlet 18, equates and area does not wait relation that according to above-mentioned pressure the elastic film pad 16 on the balancing pole 15 leaves second delivery port 11; Form channel status; Non retern valve is opened, and guarantees to prevent that panel from being washed out in the interior flow direction channel of channel side slopes.
The above; Be merely the specific embodiment of the utility model; But the protection domain of the utility model is not limited thereto; Any technician who belongs to the present technique field is in the technical scope that the utility model discloses, and the variation that can expect easily or replacement all should be encompassed within the protection domain of the utility model.Therefore, the protection domain of the utility model should be as the criterion with the protection domain of claim.
Claims (3)
1. pressure reduction control type high accuracy non retern valve equipment; It is characterized in that: comprise exocoel thin-walled pressure vessel wall (2); A side of cavity thin-wall chamber wall (2) is provided with first delivery port (1) and second delivery port (11) outside, and the opposite side of cavity thin-wall chamber wall (2) is provided with water inlet (18) outside, is provided with chamber wall under the inner chamber (3) and inner chamber upper container wall (7) in the container exocoel (10) that forms in the exocoel thin-walled pressure vessel wall (2); Chamber wall under the said inner chamber (3) and inner chamber upper container wall (7) be airtight to be connected to form an inner chamber; The elastic film (5) that said inner chamber is set at wherein is separated into inner chamber (6) and lower inner cavity (4), and chamber wall under the said inner chamber (3) is fixedly connected with said first delivery port (1) and communicates, and Inlet and outlet water passage (8) is set on the said inner chamber upper container wall (7); Be fixedly connected with tripod (14) on the said inner chamber upper container wall (7); Elastic film (5) is fixedly connected with piston rod (13), and it is hinged with balancing pole (15) that piston rod (13) passes inner chamber upper container wall (7) back, and balancing pole (15) is hinged with tripod (14); Balancing pole (15) is gone up corresponding second delivery port (11) and is provided with groove, is fixed with elastic film pad (16) in the said groove.
2. pressure reduction control type high accuracy non retern valve equipment as claimed in claim 1 is characterized in that: chamber wall (3) is connected with bolt with inner chamber upper container wall (7) under the periphery of said elastic film (5) and the inner chamber.
3. pressure reduction control type high accuracy non retern valve equipment as claimed in claim 1, it is characterized in that: elastic film (5) is fixedly connected with piston rod (13) and is specially: the center of elastic film (5) is fixedly connected with piston rod (13) with connecting bolt (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220009536 CN202401428U (en) | 2012-01-09 | 2012-01-09 | Differential pressure control type high-precision check valve device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220009536 CN202401428U (en) | 2012-01-09 | 2012-01-09 | Differential pressure control type high-precision check valve device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202401428U true CN202401428U (en) | 2012-08-29 |
Family
ID=46699082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220009536 Withdrawn - After Issue CN202401428U (en) | 2012-01-09 | 2012-01-09 | Differential pressure control type high-precision check valve device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202401428U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102535406A (en) * | 2012-01-09 | 2012-07-04 | 长江水利委员会长江科学院 | Pressure differential control type high-precision check valve equipment and application method |
| CN109056657A (en) * | 2018-09-14 | 2018-12-21 | 山东省水利科学研究院 | A kind of controllable non-return draw off valve |
-
2012
- 2012-01-09 CN CN 201220009536 patent/CN202401428U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102535406A (en) * | 2012-01-09 | 2012-07-04 | 长江水利委员会长江科学院 | Pressure differential control type high-precision check valve equipment and application method |
| CN102535406B (en) * | 2012-01-09 | 2013-10-30 | 长江水利委员会长江科学院 | Pressure differential control type high-precision check valve equipment and application method |
| CN109056657A (en) * | 2018-09-14 | 2018-12-21 | 山东省水利科学研究院 | A kind of controllable non-return draw off valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120829 Effective date of abandoning: 20131030 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20120829 Effective date of abandoning: 20131030 |
|
| RGAV | Abandon patent right to avoid regrant |