CN203209249U - Negative pressure prevention structure of irrigation device - Google Patents
Negative pressure prevention structure of irrigation device Download PDFInfo
- Publication number
- CN203209249U CN203209249U CN 201320202614 CN201320202614U CN203209249U CN 203209249 U CN203209249 U CN 203209249U CN 201320202614 CN201320202614 CN 201320202614 CN 201320202614 U CN201320202614 U CN 201320202614U CN 203209249 U CN203209249 U CN 203209249U
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- CN
- China
- Prior art keywords
- negative pressure
- nozzle
- spray nozzle
- irrigation rig
- exhalant canal
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- 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
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Abstract
A negative pressure prevention structure of an irrigation device comprises an irrigation device body, wherein a spray nozzle is arranged at a water outlet of the irrigation device body, the spray nozzle is internally provided with a water outlet channel communicated with the water outlet, a bracket located outside the spray nozzle is fixed on the irrigation device body, a spray nozzle cover located outside the front end of the spray nozzle is arranged on the bracket, at least one negative pressure hole penetrating through the spray nozzle cover is arranged on the spray nozzle cover in the radial direction, and the axis of the negative pressure hole is lower than the front end of the spray nozzle. The negative pressure prevention structure of the irrigation device has the beneficial effects that due to the adoption of the above structure, the bracket is arranged outside the spray nozzle, the negative pressure hole is arranged on the spray nozzle cover on the bracket, air can be supplemented into the spray nozzle cover to prevent the generation of negative pressure, so a water column is further prevented from diverging, and the irrigation effect is better.
Description
Technical field
The utility model relates to a kind of irrigation rig, relates in particular to a kind of anti-negative pressure structure of irrigation rig.
Background technology
For agricultural, forestry and gardens, irrigation technique has obtained large tracts of land and has promoted.And existing irrigation rig is when irrigating, and water column has certain pressure during from the outlet ejection of irrigation rig, thereby produces certain negative pressure around the outlet of irrigation rig, disperses easily after causing the water column ejection, thereby influences irrigation effect.
Summary of the invention
Have above-mentioned deficiency in the prior art in order to overcome, the utility model provides a kind of simple in structure, anti-negative pressure structure of preventing the irrigation rig that water column is dispersed.
The technical scheme in the invention for solving the technical problem is: a kind of anti-negative pressure structure of irrigation rig, comprise the irrigation rig body, the delivery port place of described irrigation rig body is provided with nozzle, be provided with the exhalant canal that is connected with described delivery port in this nozzle, fixedly have on the described irrigation rig body and be positioned at the outer support of described nozzle, this support is provided with the outer nozzle casing of front end that is positioned at described nozzle, radially offer the negative pressure hole that at least one runs through this nozzle casing on this nozzle casing, the axle center of this negative pressure hole is lower than the front end of described nozzle.
Further, described negative pressure hole has three, and is evenly distributed on the described nozzle casing, anti-negative pressure better effects if.
Further, the cross section of described exhalant canal is tapered, and the inlet diameter of described exhalant canal is greater than the outlet diameter of this exhalant canal, effect with constant current is set like this, in use, current flow out from the delivery port of irrigation rig body, thereby the outlet ejection from the exhalant canal of nozzle forms water column then, when current pass through from the exhalant canal of nozzle, because exhalant canal is arranged to taper, thereby make current compile in the exit of exhalant canal, even it is suddenly big or suddenly small from the current that the delivery port of irrigation rig body flows out, and namely become the water column of fixed size from the water column that exhalant canal flows out, thus when irrigating, can avoid irrigating inhomogeneous defective, thus reach the effect of conserve water resource.
Further, convex with the flow deflector that multi-disc distributes vertically on the inwall of described delivery port, as preferentially, described flow deflector has six, and is evenly distributed on the inwall of described delivery port.The setting of flow deflector can prevent the generation of eddy current.
The utility model in use, current flow out from the delivery port of irrigation rig body, thereby the outlet ejection from the exhalant canal of nozzle forms water column then, spray from nozzle casing at last, thereby the air in the nozzle casing can be taken away after nozzle casing ejection when water column and in nozzle casing, to form negative pressure, and the air of outside can be added in the nozzle casing from the negative pressure hole on the nozzle casing, make can not produce negative pressure in the nozzle casing, thereby preventing that water column from producing disperses, and guarantees irrigation effect.
The beneficial effects of the utility model are: adopt said structure, nozzle arranges support outward, and the nozzle casing on the support is provided with negative pressure hole, can prevent that negative pressure from producing to mending air in the nozzle casing, prevents from further that water column from producing to disperse, and irrigation effect is better.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of support of the present utility model.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
With reference to Fig. 1, Fig. 2, a kind of anti-negative pressure structure of irrigation rig, comprise irrigation rig body 1, delivery port 2 places of described irrigation rig body 1 are provided with nozzle 3, be provided with the exhalant canal 4 that is connected with described delivery port 2 in this nozzle 3, the support 5 that is positioned at outside the described nozzle 3 is fixedly arranged on the described irrigation rig body 1, this support 5 is provided with the outer nozzle casing 6 of front end that is positioned at described nozzle 3, radially offer at least one negative pressure hole that runs through this nozzle casing 67 on this nozzle casing 6, the axle center of this negative pressure hole 7 is lower than the front end of described nozzle 3, and in the present embodiment, described negative pressure hole 7 has three, and be evenly distributed on the described nozzle casing 6 anti-negative pressure better effects if.
The cross section of described exhalant canal 4 is tapered, and the inlet diameter of described exhalant canal 4 is greater than the outlet diameter of this exhalant canal 4, effect with constant current is set like this, in use, current flow out from the delivery port 2 of irrigation rig body 1, thereby the outlet ejection from the exhalant canal 4 of nozzle 3 forms water column then, when current pass through from the exhalant canal 4 of nozzle 3, because exhalant canal 4 is arranged to taper, thereby make current compile in the exit of exhalant canal 4, even it is suddenly big or suddenly small from the current that the delivery port 2 of irrigation rig body 1 flows out, and namely become the water column of fixed size from the water column that exhalant canal 4 flows out, thereby when irrigating, can avoid irrigating inhomogeneous defective, thereby reach the effect of conserve water resource.
Convex with the flow deflector 8 that multi-disc distributes vertically on the inwall of described delivery port 2, as preferentially, described flow deflector 8 has six, and is evenly distributed on the inwall of described delivery port 2.The setting of flow deflector 8 can prevent the generation of eddy current.
The utility model in use, current flow out from the delivery port 2 of irrigation rig body 1, thereby the outlet ejection from the exhalant canal 4 of nozzle 3 forms water column then, at last from nozzle casing 6 ejections, thereby when water column can be taken away the air in the nozzle casing 6 formation negative pressure in nozzle casing 6 after nozzle casing 6 ejection, and the air of outside can be added in the nozzle casing 6 from the negative pressure hole 7 on the nozzle casing 6, makes can not produce negative pressure in the nozzle casing 6, thereby preventing that water column from producing disperses, and guarantees irrigation effect.
Claims (5)
1. the anti-negative pressure structure of an irrigation rig, comprise the irrigation rig body, it is characterized in that: the delivery port place of described irrigation rig body is provided with nozzle, be provided with the exhalant canal that is connected with described delivery port in this nozzle, fixedly have on the described irrigation rig body and be positioned at the outer support of described nozzle, this support is provided with the outer nozzle casing of front end that is positioned at described nozzle, radially offer the negative pressure hole that at least one runs through this nozzle casing on this nozzle casing, the axle center of this negative pressure hole is lower than the front end of described nozzle.
2. according to the anti-negative pressure structure of the described irrigation rig of claim 1, it is characterized in that: described negative pressure hole has three, and is evenly distributed on the described nozzle casing.
3. according to the anti-negative pressure structure of claim 1 or 2 described irrigation rigs, it is characterized in that: the cross section of described exhalant canal is tapered, and the inlet diameter of described exhalant canal is greater than the outlet diameter of this exhalant canal.
4. according to the anti-negative pressure structure of the described irrigation rig of claim 3, it is characterized in that: convex with the flow deflector that multi-disc distributes vertically on the inwall of described delivery port.
5. according to the anti-negative pressure structure of the described irrigation rig of claim 4, it is characterized in that: described flow deflector has six, and is evenly distributed on the inwall of described delivery port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320202614 CN203209249U (en) | 2013-04-22 | 2013-04-22 | Negative pressure prevention structure of irrigation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320202614 CN203209249U (en) | 2013-04-22 | 2013-04-22 | Negative pressure prevention structure of irrigation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203209249U true CN203209249U (en) | 2013-09-25 |
Family
ID=49198821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320202614 Expired - Fee Related CN203209249U (en) | 2013-04-22 | 2013-04-22 | Negative pressure prevention structure of irrigation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203209249U (en) |
-
2013
- 2013-04-22 CN CN 201320202614 patent/CN203209249U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 Termination date: 20160422 |