CN201986589U - Middle-layer water taking oncomelania prevention blocking net - Google Patents
Middle-layer water taking oncomelania prevention blocking net Download PDFInfo
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- CN201986589U CN201986589U CN 201120063159 CN201120063159U CN201986589U CN 201986589 U CN201986589 U CN 201986589U CN 201120063159 CN201120063159 CN 201120063159 CN 201120063159 U CN201120063159 U CN 201120063159U CN 201986589 U CN201986589 U CN 201986589U
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- oncomelania
- block
- water
- blocking net
- layer water
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Abstract
The utility model relates to a middle-layer water taking oncomelania prevention blocking net, which comprises a blocking net fixed on a riverbed through a fixing anchor and is characterized in that a bottom oncomelania blocking plate is connected with the lower end of the blocking net, a water taking opening is arranged on the bottom oncomelania blocking plate, and an oncomelania prevention cover plate is sheathed on the edge of the water facing side of the water taking opening. Water blocking walls are built at both sides of the blocking net from the bottom to the top. The blocking net is connected and fixed through a fixing steel cable and the fixing anchor. The blocking net consists of a plurality of pieces of blocking nets which can be separated. A distance from the upper edge of the water taking opening to the water level is greater than or equal to 1.2m. The water taking opening is in a rectangular shape or a round shape. The blocking net is made of polyethylene window screens. The length of an oncomelania prevention cover is between 0.3m and 0.5m. The middle-layer water taking oncomelania prevention blocking net has the advantages that the cost is low, the manufacture and the installation are easy and convenient, the dismounting and the maintenance are convenient, and a complete oncomelania prevention effect is realized under the condition of 0.88 to 1.0 m/s of center flowing speed. The middle-layer water taking oncomelania prevention blocking net is applicable to the oncomelania dispersion prevention and control at a riverway electric pumping house water inlet or a self flowing type sluice gate water inlet with the oncomelania.
Description
Technical field
The utility model relates to the anti-oncomelania block of a kind of middle layer water withdrawal, belongs to the prevention and cure of snail fever technical field.
Background technology
Japanese schistosomiasis is the parasitosis of the popular a kind of serious harm people's life health in China mainland and some countries and regions, Asia, also is that a kind of difficulty of prevention and cure is big simultaneously, easily disease repeatedly.Because oncomelania is the only intermediate host of Schistosoma japonicum, oncomelania has determined the popular scope and the popularity degree of Japanese schistosomiasis.All have the place of schistosomiasis endemic must have oncomelania to multiply, and the popular district that every oncomelania is not effectively controlled just is difficult to effectively control infection by Schistosoma and infects, therefore controls emphasis and the difficult point that oncomelania is prevention and cure of snail fever work always.Oncomelania is a kind of amphibious freshwater snails, multiplies in popular district rivers, lake, irrigated area, and environment such as massif area Xi Gou, careless beach.River, river, massif flood, irrigate and all can make the oncomelania diffusion of drifting about in the water, therefore control oncomelania and spread and be subjected to showing great attention to.Domestic scholars had been carried out researchs such as oncomelania ecology, hydraulics in nearly 20 years.The result shows that oncomelania is water meter, water-bed two kinds of distributions in static water body, and the water body middle level does not have spiral shell usually; Oncomelania dynamically then is being distributed as the master with bottom in the water body; And the diffusion of oncomelania in water body mainly relies on the absorption floating thing to spread with current at surface layer of water, and this is the main mode of oncomelania diffusion.According to above result of study, anti-spiral shell measures such as block, middle layer water withdrawal, " advection sedimentation " have been proposed.The block technology is intended to directly tackle oncomelania and young spiral shell thereof, and expense is cheap, easily operation, but The field finds to block the spiral shell net and has the problem of easily stopping up and block water, and therefore there is no on-the-spot independent the use.What use was more at present is anti-spiral shell technology (building snail sedimentation tank) of advection sedimentation and the anti-spiral shell technology of middle layer water withdrawal, but " snail sedimentation tank " needs bigger input, more occupation of land, and the later stage operational management is had relatively high expectations.The anti-spiral shell technique effect of middle layer water withdrawal is reliable, takes up an area of and lacks, and expense is low than the former, and operational management requires also low than the former.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of middle layer water withdrawal anti-oncomelania block, and expense is cheap, makes and the installation simple and convenient, is convenient to partition and safeguards.
The technical scheme that provides according to the utility model, the anti-oncomelania block of a kind of middle layer water withdrawal, comprise by mooring anchor and be fixed on block on the riverbed, feature is: connect bottom retaining spiral shell plate in the lower end of described block, on bottom retaining spiral shell plate, be provided with intake, be arranged with anti-spiral shell cover at the meet water edge of a side of intake.
The emersed height of described block is 0.2～1.0m, and building to the top from the bottom in the both sides of block has waterwall.
Described block is by fixedly wirerope and mooring anchor are connected and fixed.
Described block is made up of the separable block of multi-disc.
Described intake upper limb is apart from the water surface 〉=1.2m, and lower edge is 0.3～0.5m apart from the riverbed.Described intake is rectangle or circle.
Described block is made by the polyethylene window screening.
The length of described anti-spiral shell cover is 0.3～0.5m.
Described bottom retaining spiral shell plate and anti-spiral shell cover are that the color steel of 0.5mm is made by thickness.
The utility model expense is cheap, make and simple and convenient is installed, be convenient to partition safeguards, has anti-completely spiral shell effect under the flow velocity 0.88 ~ 1.0m/s condition of center.Be applicable to the diffusion of oncomelania river course electric pumping station water inlet or self-flowing type culverts and water gates water inlet prevention and control oncomelania.The requirement water front is stable, intake has the big depth of water.Require periodic maintenance simultaneously, change and damage window screening, and as required to carrying out desilting at the bottom of riverbed or the canal before and after the block.River course, Tongjiang, schistosomiasis endemic district (lake), electric pumping station, culverts and water gates are numerous, prevent that oncomelania diffusion, control schistosomiasis propagation task are very arduous.Therefore anti-oncomelania block described in the utility model has very wide application prospect, has distinct economic and social benefit.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a cutaway view of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with concrete accompanying drawing.
As Fig. 1～shown in Figure 2: the anti-oncomelania block of middle layer water withdrawal comprises bottom retaining spiral shell plate 1, intake 2, anti-spiral shell cover 3, block 4, mooring anchor 5, fixedly wirerope 6, waterwall 7 etc.
The utility model comprises by mooring anchor 5 and is fixed on block 4 on the riverbed, connects bottom retaining spiral shell plate 1 in the lower end of block 4, being provided with intake 2 on bottom retaining spiral shell plate 1, is arranged with anti-spiral shell cover 3 at the meet water edge of a side of intake 2;
The height of the water surface when described block 4 stretches out peak level is 0.2～1.0m, and building to the top from the bottom in block 4 both sides has waterwall 7;
Described block 4 is by fixedly wirerope 6 and mooring anchor 5 are connected and fixed;
Described block 4 is made up of the separable block of multi-disc, is convenient to demolition and maintenance;
The length of described anti-spiral shell cover 3 is 0.3～0.5m;
Described block 4 is that the polyethylene window screening of 30 order/square feet is made by the order number, and the aperture of polyethylene window screening is 0.9mm;
Described bottom retaining spiral shell plate 1 and anti-spiral shell cover 3 are that the color steel of 0.5mm is made by thickness;
Described intake 2 is circular for rectangle, and described intake 2 upper limbs are apart from the water surface 〉=1.2m, and lower edge is 0.3～0.5m apart from the riverbed.
The utility model is at first investigated the electric pumping station that block is set or the culverts and water gates water inlet depth of water, entrance width in use; Understand the highest, the lowest water level data in locality; Design and produce the anti-oncomelania block of middle layer water withdrawal according to field condition and specification requirement then, and be installed in electric pumping station intake or culverts and water gates water inlet; According to local peak level, the distance of high operating water level is 0.2 ~ 1.0m to determine to stretch out in the block top, both sides with brick waterwall 7 to blocking 4 tops; According to the depth of water, determine that intake 2 lower edges distance at the bottom of river bed or the canal is 0.3 ~ 0.5m, intake 2 upper limbs are to the distance 〉=1.2m that moves the water surface, intake 2 sizes 〉=water pump or culverts and water gates flow; Determine that anti-spiral shell cover 3 length (or water inlet meet water side length sleeve) are 0.3 ~ 0.5m.The utility model has been applicable to oncomelania river course electric pumping station water inlet or the diffusion of self-flowing type culverts and water gates water inlet prevention and control oncomelania.The requirement water front is stable, intake has the big depth of water.Require periodic maintenance simultaneously, change and damage window screening, and as required to carrying out desilting at the bottom of riverbed or the canal before and after the block.
The utility model is chosen in the electric pumping station, spiral shell river course that has that the Danyang City, Jiangsu Province communicates with canal, Hangzhoupro, capital and has carried out field trial, and middle layer water withdrawal blocks the anti-spiral shell effect of oncomelania net and reaches 100% as a result.(greater than water conservancy prevention and cure of schistosomiasis guide rule regulation flow velocity) dropped into 1500 on marker color oncomelania in blocking spiral shell net inboard (electric pumping station water pump intake pool) when field trial was 0.88 ~ 1.0m/s at the center flow velocity, and the result has 1352 (90.13%) to be entered feed ditch by the water pump suction; Enter feed ditch and drop into 1500 none suctions of marker color oncomelania in the block outside (river course side).The anti-oncomelania of proof middle layer water withdrawal blocks the spiral shell netting gear the splendid anti-spiral shell effect of spiral shell of blocking.River course, Tongjiang, schistosomiasis endemic district (lake), electric pumping station, culverts and water gates are numerous, and anti-oncomelania diffusion task is very arduous, so the present invention has very wide application prospect and remarkable economic efficiency and social benefit.
Claims (9)
1. the anti-oncomelania of middle layer water withdrawal is blocked, comprise by mooring anchor (5) and be fixed on block (4) on the riverbed, it is characterized in that: connect bottom retaining spiral shell plate (1) in the lower end of described block (4), on bottom retaining spiral shell plate (1), be provided with intake (2), be arranged with anti-spiral shell cover (3) at the meet water edge of a side of intake (2).
2. the anti-oncomelania block of middle layer water withdrawal as claimed in claim 1, it is characterized in that: the emersed height of described block (4) is 0.2～1.0m, building to the top from the bottom in the both sides of block (4) has waterwall (7).
3. the anti-oncomelania block of middle layer water withdrawal as claimed in claim 1 is characterized in that: described block (4) is by fixedly wirerope (6) and mooring anchor (5) are connected and fixed.
4. the anti-oncomelania block of middle layer water withdrawal as claimed in claim 1, it is characterized in that: described block (4) is made up of the separable block of multi-disc.
5. the anti-oncomelania block of middle layer water withdrawal as claimed in claim 1, it is characterized in that: described intake (2) upper limb is apart from the water surface 〉=1.2m, and lower edge is 0.3～0.5m apart from the riverbed.
6. the anti-oncomelania block of middle layer water withdrawal as claimed in claim 1 is characterized in that: described intake (2) for rectangle is or is circular.
7. the anti-oncomelania block of middle layer water withdrawal as claimed in claim 1, it is characterized in that: described block (4) is made by the polyethylene window screening.
8. the anti-oncomelania block of middle layer water withdrawal as claimed in claim 1, it is characterized in that: the length of described anti-spiral shell cover (3) is 0.3～0.5m.
9. the anti-oncomelania block of middle layer water withdrawal as claimed in claim 1 is characterized in that: described bottom retaining spiral shell plate (1) and anti-spiral shell cover (3) are that the color steel of 0.5mm is made by thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120063159 CN201986589U (en) | 2011-03-11 | 2011-03-11 | Middle-layer water taking oncomelania prevention blocking net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120063159 CN201986589U (en) | 2011-03-11 | 2011-03-11 | Middle-layer water taking oncomelania prevention blocking net |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201986589U true CN201986589U (en) | 2011-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120063159 Expired - Lifetime CN201986589U (en) | 2011-03-11 | 2011-03-11 | Middle-layer water taking oncomelania prevention blocking net |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201986589U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104026117A (en) * | 2014-06-19 | 2014-09-10 | 南京麦思德餐饮管理有限公司 | Method for preventing and controlling pomacea canaliculata |
| CN108951530A (en) * | 2018-09-30 | 2018-12-07 | 安徽理工大学 | It is a kind of navigation diversion works except spiral shell design |
| CN109252495A (en) * | 2018-10-22 | 2019-01-22 | 三峡大学 | Culverts and water gates canal system system oncomelania device for trapping |
-
2011
- 2011-03-11 CN CN 201120063159 patent/CN201986589U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104026117A (en) * | 2014-06-19 | 2014-09-10 | 南京麦思德餐饮管理有限公司 | Method for preventing and controlling pomacea canaliculata |
| CN108951530A (en) * | 2018-09-30 | 2018-12-07 | 安徽理工大学 | It is a kind of navigation diversion works except spiral shell design |
| CN108951530B (en) * | 2018-09-30 | 2024-04-16 | 安徽理工大学 | Spiral shell removing project of navigation diversion project |
| CN109252495A (en) * | 2018-10-22 | 2019-01-22 | 三峡大学 | Culverts and water gates canal system system oncomelania device for trapping |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110928 |