CN203906913U - Check valve - Google Patents
Check valve Download PDFInfo
- Publication number
- CN203906913U CN203906913U CN201420339677.3U CN201420339677U CN203906913U CN 203906913 U CN203906913 U CN 203906913U CN 201420339677 U CN201420339677 U CN 201420339677U CN 203906913 U CN203906913 U CN 203906913U
- Authority
- CN
- China
- Prior art keywords
- flap
- valve clack
- valve
- groove
- propeller cavitation
- 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 - Fee Related
Links
Abstract
The utility model discloses a check valve. The check valve comprises a valve body, wherein the valve body comprises an input runner and an output runner; a channel is formed between the input runner and the output runner; valve clacks are arranged in the channel, and comprise a first valve clack, a second valve clack, a torsional spring and a revolving shaft; the second valve clack is fixedly connected with the channel; the first valve clack and the second valve clack are arranged coaxially, and are rotationally connected through the revolving shaft; the other side, which is opposite to the second valve clack, of the first valve clack is provided with a screw propeller; a cavity is formed between the screw propeller and the first valve clack; a connecting rod is arranged in the cavity; one end of the connecting rod is fixedly connected with the screw propeller, and the other end of the connecting rod is fixedly connected with the central position of the first valve clack; the screw propeller is arranged opposite to the input runner; the second valve clack is provided with a through groove; the first valve clack is provided with a through hole which can be communicated with the through groove in the rotation process; the torsional spring comprises two support legs and a torsional ring; the torsional ring sleeves the revolving shaft; one support leg is clamped with the second valve clack, and the other support leg is clamped with the first valve clack. The check valve has the characteristics of simple structure and stability in running.
Description
Technical field
The utility model relates to a kind of valve, and more particularly, it relates to a kind of safety check.
Background technique
Safety check claims again one-way valve or reverse valve, its effect is to prevent that the medium in pipeline from flowing backwards, open-shut device is opened voluntarily or closes by media flow and strength, to prevent that valve that medium flows backwards is on safety check, safety check belongs to self-acting valve class, be mainly used on the pipeline of medium one-way flow, only allow medium to flow to a direction, to try to avert accidents.
The flap of safety check is opened under fluid pressure action, and fluid flows to outlet side from suction side, and when suction side pressure is during lower than outlet side, flap automatically closes to prevent that fluid from flowing backwards under the factor effects such as fluid pressure difference or gravity own.
At present, safety check on market comprises valve body, lifting flap and axle sleeve, valve body comprises input duct and delivery channel, between described input duct and delivery channel, be provided with passage, described lifting flap is set to cylindrical body, cylindrical body upper surface convexes with little round platform, little round platform interts and is connected in axle sleeve and with axle sleeve slippage, lifting flap rises under the effect of fluid, fluid enters delivery channel from input duct, while there is no fluid in input duct, described lifting flap seals passage in the gravity decline of itself, stop the fluid in delivery channel to flow backwards, this safety check in the course of the work, fluid impact flap, little round platform rocks in axle sleeve, cause safety check integral body to rock.
Model utility content
The deficiency existing for prior art, the purpose of this utility model is to provide a kind of safety check, have simple in structure, the feature operating steadily.
For achieving the above object, the utility model provides following technological scheme:
A kind of safety check, comprise valve body, described valve body comprises input duct and delivery channel, between described input duct and delivery channel, be provided with passage, in described passage, be provided with flap, described flap comprises the first flap, the second flap, torsion spring and rotating shaft, described the second flap is fixedly connected with passage, described the first flap is with the coaxial setting of the second flap and be rotationally connected by rotating shaft, the opposite side of relative the second flap of described the first flap is provided with propeller cavitation, between described propeller cavitation and the first flap, be provided with cavity volume, in described cavity volume, be provided with connecting rod, described connecting rod one end is fixedly connected with propeller cavitation, the other end is fixedly connected with the first flap central position, the relative input duct setting of described propeller cavitation, described the second flap is provided with groove, described the first flap is provided with the through hole that can be connected with groove in rotary course, described torsion spring comprises two legs and torsion circle, described torsion circle is set in rotating shaft, leg and the second flap clamping, another leg and the first flap clamping.
By adopting technique scheme, fluid enters valve body from input duct, by fluid, entering the flow velocity producing in cavity volume rotates propeller cavitation, between propeller cavitation and the first flap, by connecting rod, be connected, propeller cavitation rotarily drives the first flap and rotates, through hole on the first flap is communicated with the groove of the second flap, fluid enters input duct from the through hole and the groove that are communicated with, in input duct, there is no fluid through out-of-date, torsion spring with the first flap and the second flap clamping, can make the first flap in the process of rotation, reaching through hole makes passage closed away from groove, complete the process of safety check work, torsion spring also has spacing effect, prevent that the first flap is at work all the time in rotation status, use torsion spring is simple in structure, cost is low, this model utility has simple in structure, the feature operating steadily.
The utility model is further set to: between described the first flap and propeller cavitation, be provided with fixed block, described fixed block one end is fixedly connected with the inwall of passage, and the other end is provided with bearing, and described bearing housing is located on connecting rod.
By adopting technique scheme, on connecting rod, be arranged with fixed block, on the one hand, can prevent that propeller cavitation is in the long-living excessive concussion of working procedure, further make safety check stable working, on the other hand, propeller cavitation rocks and can drive rocking of the first flap in the impact of fluid, affect the sealing between the first flap and the second flap, thereby reduction using effect, propeller cavitation is for a long time in rocking, connecting rod easily ruptures with the position that the first flap contacts, reduce the working life of safety check, between the first flap and propeller cavitation, be provided with fixed block, can effectively solve defect described above.
The utility model is further set to: described through hole and groove are equipped with three, and described through hole and groove are all circumferentially and are uniformly distributed.
By adopting technique scheme, the first flap and the second flap surface are all six deciles, the first flap is provided with three through holes, and the second flap is provided with three grooves, on the one hand, reduce manufacture cost, increase flow speed, on the other hand, through hole and groove arrange too much, the precision of assembling will be higher, and assembling is just more difficult.
Accompanying drawing explanation
Fig. 1 is the utility model safety check embodiment's schematic diagram;
Fig. 2 is the utility model safety check embodiment's flap schematic diagram;
Fig. 3 is the utility model safety check embodiment's propeller cavitation schematic diagram;
Fig. 4 is the utility model safety check embodiment's flap schematic diagram.
In figure: 1, valve body; 2, input duct; 3, delivery channel; 4, passage; 5, flap; 51, the first flap; 511, through hole; 52, the second flap; 521, groove; 53, rotating shaft; 54, torsion spring; 7, connecting rod; 8, fixed block; 81, bearing; 9, cavity volume.
Embodiment
Referring to figs. 1 through Fig. 4, the utility model safety check embodiment is described further.
A kind of safety check, comprise valve body 1, described valve body 1 comprises input duct 2 and delivery channel 2, between described input duct 2 and delivery channel 2, be provided with passage 4, in described passage 4, be provided with flap 5, described flap 5 comprises the first flap 51, the second flap 52, torsion spring 54 and rotating shaft 53, described the second flap 52 is fixedly connected with passage 4, described the first flap 51 is with the coaxial setting of the second flap 52 and be rotationally connected by rotating shaft 53, the opposite side of relative the second flap 52 of described the first flap 51 is provided with propeller cavitation, between described propeller cavitation and the first flap 51, be provided with cavity volume 9, in described cavity volume 9, be provided with connecting rod 7, described connecting rod 7 one end are fixedly connected with propeller cavitation, the other end is fixedly connected with the first flap 51 central positions, the relative input duct 2 of described propeller cavitation arranges, described the second flap 52 is provided with groove 521, described the first flap 51 is provided with the through hole 511 that can be connected with groove 521 in rotary course, described torsion spring 54 comprises two legs and torsion circle, described torsion circle is set in rotating shaft 53, leg and the second flap 52 clampings, another leg and the first flap 51 clampings.
By adopting technique scheme, fluid enters valve body 1 from input duct 2, by fluid, entering the flow velocity producing in cavity volume 9 rotates propeller cavitation, between propeller cavitation and the first flap 51, by connecting rod 7, be connected, propeller cavitation rotarily drives the first flap 51 and rotates, through hole 511 on the first flap 51 is communicated with the groove 521 of the second flap 52, fluid enters input duct 2 from the through hole 511 and the groove 521 that are communicated with, in input duct 2, there is no fluid through out-of-date, torsion spring 54 with the first flap 51 and the second flap 52 clampings, can make the first flap 51 in the process of rotation, reach through hole 511 and make passage 4 closures away from groove 521, complete the process of safety check work, torsion spring 54 also has spacing effect, prevent that the first flap 51 is at work all the time in rotation status, use torsion spring 54 simple in structure, cost is low, this model utility has simple in structure, the feature operating steadily.
Between described the first flap 51 and propeller cavitation, be provided with fixed block 8, described fixed block 8 one end are fixedly connected with the inwall of passage 4, and the other end is provided with bearing 81, and described bearing 81 is set on connecting rod 7.
By adopting technique scheme, on connecting rod 7, be arranged with fixed block 8, on the one hand, can prevent that propeller cavitation is in the long-living excessive concussion of working procedure, further make safety check stable working, on the other hand, propeller cavitation rocks and can drive rocking of the first flap 51 in the impact of fluid, affect the sealing between the first flap 51 and the second flap 52, thereby reduction using effect, propeller cavitation is for a long time in rocking, connecting rod 7 easily ruptures with the position that the first flap 51 contacts, reduce the working life of safety check, between the first flap 51 and propeller cavitation, be provided with fixed block 8, can effectively solve defect described above.
Described through hole 511 is equipped with three with groove 521, and described through hole 511 is all circumferentially and is uniformly distributed with groove 521.
By adopting technique scheme, the first flap 51 and the second flap 52 surfaces are all six deciles, the first flap 51 is provided with three through holes, 511, the second flaps 52 and is provided with three grooves 521, on the one hand, reduce manufacture cost, increase flow speed, on the other hand, through hole 511 and groove 521 arrange too much, the precision of assembling will be higher, and assembling is just more difficult.
The above is only preferred implementation of the present utility model, and protection domain of the present utility model is also not only confined to above-described embodiment, and all technological schemes belonging under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, in the some improvements and modifications that do not depart under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (3)
1. a safety check, comprise valve body, described valve body comprises input duct and delivery channel, between described input duct and delivery channel, be provided with passage, in described passage, be provided with flap, it is characterized in that: described flap comprises the first flap, the second flap, torsion spring and rotating shaft, described the second flap is fixedly connected with passage, described the first flap is with the coaxial setting of the second flap and be rotationally connected by rotating shaft, the opposite side of relative the second flap of described the first flap is provided with propeller cavitation, between described propeller cavitation and the first flap, be provided with cavity volume, in described cavity volume, be provided with connecting rod, described connecting rod one end is fixedly connected with propeller cavitation, the other end is fixedly connected with the first flap central position, the relative input duct setting of described propeller cavitation, described the second flap is provided with groove, described the first flap is provided with the through hole that can be connected with groove in rotary course, described torsion spring comprises two legs and torsion circle, described torsion circle is set in rotating shaft, leg and the second flap clamping, another leg is inserted and the first flap clamping.
2. safety check according to claim 1, is characterized in that: between described the first flap and propeller cavitation, be provided with fixed block, described fixed block one end is fixedly connected with the inwall of passage, and the other end is provided with bearing, and described bearing housing is located on connecting rod.
3. safety check according to claim 2, is characterized in that: described through hole and groove are equipped with three, and described through hole and groove are all circumferentially and are uniformly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420339677.3U CN203906913U (en) | 2014-06-24 | 2014-06-24 | Check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420339677.3U CN203906913U (en) | 2014-06-24 | 2014-06-24 | Check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203906913U true CN203906913U (en) | 2014-10-29 |
Family
ID=51781193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420339677.3U Expired - Fee Related CN203906913U (en) | 2014-06-24 | 2014-06-24 | Check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203906913U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345284A (en) * | 2019-07-26 | 2019-10-18 | 黄洪刚 | A kind of check-valves |
-
2014
- 2014-06-24 CN CN201420339677.3U patent/CN203906913U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345284A (en) * | 2019-07-26 | 2019-10-18 | 黄洪刚 | A kind of check-valves |
| CN110345284B (en) * | 2019-07-26 | 2020-07-28 | 江苏海达船用阀业有限公司 | Check valve |
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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: 20141029 Termination date: 20160624 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |