CN201479736U

CN201479736U - Circular ring-shaped float net scraper

Info

Publication number: CN201479736U
Application number: CN2009201472292U
Authority: CN
Inventors: 敖志辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-02
Filing date: 2009-04-02
Publication date: 2010-05-26
Anticipated expiration: 2019-04-02

Abstract

A circular ring-shaped float net scraper relates to the field of preventing and killing attachments on a net cage in the floating raft cultivation on the agricultural sea, and is a device for automatically cleaning the net cage underwater. A net scraper arranged at an inner ring part of the device forms a circular ring-shaped net scraper; the bottom surface of the circular ring is divided into equal and symmetrical cavities by rib plates; a cylinder is arranged in the middle of the cavity; plastic is used for forming a circular ring-shaped plastic net scraper in a one-step injection manner; plastic foam floats with holes are injection-molded according to the shape and the size of the cavity, and are loaded into the cavity, a plastic baffle with holes is sleeved in a cylinder in the middle of the cavity, the part of the cylinder exposed from the plastic baffle is heated and scalded to be hot-melt together with the plastic baffle, so that the circular ring-shaped float net scraper is formed. The circular ring-shaped float net scraper has the benefits that the plastic foams are adopted as floats, so that the material and the manufacturing cost of a product (the weight of the product is less than 400g) are remarkably reduced, the pollution of the environment in processing is avoided, and purposes of energy conservation, emission reduction, labor conservation and environmental protection are achieved.

Description

A kind of circular ring buoy net scraper

Technical field

The utility model relates in the agriculture marine buoyancy raft net cage culture the preventing and kill off of stained thing on the cylinder mould, and is a kind of circular ring buoy net scraper that cylinder mould is cleaned under water automatically.

Background technology

Domestic and international many experts pointed out once that the attachment on the shellfish culture cylinder mould was to cause one of shellfish undergrowth and main causes of death.How effectively to prevent and kill off the attachment of culturing on the cylinder mould and become one of research topic of culture fishery.

In the recent period, " a kind of device that cylinder mould is cleaned automatically " and " a kind of device that cylinder mould is cleaned under water automatically " utility model patent comes out, and other has patents of invention such as " a kind of method and apparatus that cylinder mould is cleaned automatically " to be disclosed under water.By experimental results demonstrate, although these patented products can reach the purpose that cylinder mould is cleaned automatically under water, but have that product structure complexity, manufacturing process are loaded down with trivial details, material and processing cost cross high practical problem, wherein outstanding especially is the material and the structure problem of float.The scheme that above-mentioned all patented technologies solve the float problem has two kinds, and a kind of is to adopt hollow float, and another kind is to adopt solid float.

Adopt hollow float to have three problems: high material consumption, processing cost height, seriously polluted.At first, form certain space (hollow) with plastics and will consume the plastics that satisfy requirement of strength, more than product weight 750 grams; Secondly, process two semi-finished product, use special-purpose clapper die spotting press then with its hot melt together, large-area hot melting process requires the standard height, and power consumption is big; In addition, the great amount of carbon dioxide that produces in the reflow process can cause certain pollution to environment.These three problems directly cause the raising of product cost.

Adopt solid float to have two problems: one, in plastics, add the whole proportion that blowing agent is controlled product, but its whole proportion can not be less than 0.85, otherwise product strength not to reach instructions for use; Two, specific gravity control is being realized under 0.85 the prerequisite that this will be cost with a large amount of plastics consumption more than desired buoyancy 300 grams (product and float are integrated), more than two kilograms, material cost is high at least for the weight of product.

Summary of the invention

For material and the structure problem that solves float; save material; reduce power consumption, simplify technology; avoid the carbonic acid gas pollution on the environment that produces in the large tracts of land reflow process and to the input of special equipment (large-scale hot melt clapper die spotting press); the utility model adopts plastic foam to make float, forms annulus float shape net and scrapes.

The technical solution adopted in the utility model is: interior endless belt is had below the plastic circle ring that net scrapes, be divided into equal and opposite in direction, symmetrical cavity with gusset, has cylinder in the middle of the cavity, scrape with the disposable annular plastic wire that is injection molded into of plastics.By cavity shape and big or small injection moulding plastic foam float with holes, plastic foam float with holes is packed into behind the cavity, again plastic dam with holes is sleeved on the middle cylinder of cavity, the part of cylinder being exposed plastic dam adds blanchingization, make itself and plastic dam hot melt together, form circular ring buoy net scraper.

The beneficial effects of the utility model are: adopt plastic foam to do material and manufacturing cost (product weight is below 400 grams) that float can significantly reduce product, avoid pollution on the environment in the process, energy-conservation, reduction of discharging, saving of labor, environmental protection.

Description of drawings

Fig. 1 is the assembly drawing of the utility model circular ring buoy net scraper.(1) is that the plastic circle ring (2) that interior endless belt has net and scrapes is that plastic dam (3) is the plastic foam float among Fig. 1.

Fig. 2 is the section partial enlarged drawing of the utility model circular ring buoy net scraper.

Fig. 3 is cylinder mould residing location drawing when the different size and Orientation of trend, also is product operation principle schematic diagram.

The position on sea when A represents full sea among Fig. 3, the position on sea when B represents half tide.(1) be that buoyant spheres (2) is that lifting rope (3) is that raft body (4) is that cylinder mould upper spacer (5) is that square floater net scraper (6) is that cylinder mould (7) is that sandbag (8) is the cylinder mould lower clapboard.When the 3-1 among Fig. 3 is slug flow (flow velocity is similar to zero during full sea), the residing relative position figure of cylinder mould and square floater net scraper.Trend increased to a certain degree when 3-2 among Fig. 3 and 3-3 were half tide, the residing relative position figure of cylinder mould and square floater net scraper.

Embodiment

With interior endless belt have plastic circle ring that net scrapes below, be divided into equal-sized 8 cavitys with gusset, every a cavity cylinder is set in the centre position of two gussets, finish with an injection moulding of plastics.(see figure 1)

By having cylindrical cavity shape and big or small injection-moulded plastic foam plastic float, and have the circular hole that cooperates with cylinder in the middle of making the plastic foam float.(seeing Fig. 1, Fig. 2)

With plastic foam float (3) pack into have cylindrical cavity after, again plastic dam with holes (2) is sleeved on the cylinder, the part of cylinder being exposed plastic dam adds blanchingization, make among itself and Fig. 2 plastic dam (2) hot melt together, form circular ring buoy net scraper.(seeing Fig. 1, Fig. 2)

Circular ring buoy net scraper is sleeved on the cylinder mould, the minimum diameter that makes ring in it is greater than the external diameter of cylinder mould central dividing plate more than 10 millimeters, strengthen lower clapboard on the cylinder mould external diameter (iron bar of also available two appropriate diameter respectively from the existing cylinder mould the circular hole on the lower clapboard intersect and pass, fix with fine rule and dividing plate then), make circular ring buoy net scraper all can not break away from cylinder mould up and down.

The underwater operation principle of circular ring buoy net scraper is:

Trend can be with the fluctuation of morning and evening tides, and twice of every day changes the size of direction and flow velocity, causes cylinder mould correspondingly to change the pivot angle size at different directions every day.As the 3-1 among Fig. 3, (flow velocity approaches zero during full sea) cylinder mould is basically perpendicular to the sea during slug flow, and does swing slightly, and circular ring buoy net scraper is by the buoyancy of self, and free floating is to the top (not requiring the circular ring buoy net scraper acting this moment) of cylinder mould.Along with the continuous increase of (opening stream) trend, cylinder mould can be swung certain angle-α pivot angle to direction of tide.When the α pivot angle increased to a certain degree, circular ring buoy net scraper can progressively move to the bottom of cylinder mould along the cylinder mould direction of axis line, as the 3-2 among Fig. 3 under the impact of trend; Along with slowing down of trend, the α pivot angle is reduced to zero gradually, circular ring buoy net scraper again free floating to the top of cylinder mould.In like manner, when cylinder mould swings to the α pivot angle greatly to a certain degree the time round about, circular ring buoy net scraper progressively moves to the bottom of cylinder mould once more along the cylinder mould direction of axis line, as the 3-3 among Fig. 3.At this moment, sandbag (7) can prevent from upwards to float bottom the cylinder mould.Circular ring buoy net scraper is realized two strokes up and down every day on cylinder mould, reach scraping of cylinder mould washed purpose.

The make progress buoyancy size of free floating of circular ring buoy net scraper, can calculate by following straightforward procedure:

According to the given size of Fig. 2 (dimension conversion is become decimetre)

If circular ring buoy net scraper cavity external diameter is R=478/2=239 millimeter=2.39 decimeter

If circular ring buoy net scraper cavity internal diameter is r=346/2=173 millimeter=1.73 decimeter

Then circular ring buoy net scraper is S by the area of cavity external diameter composition _Greatly=π R ²=* 3.14 * 2.39 ²=17.94 decimeters ²

Then circular ring buoy net scraper is S by the area of cavity internal diameter composition _Little=π r ²=3.14 * 1.73 ²* 9.40 decimeters ²

Then the area of circular ring buoy net scraper cavity part is S=S _Greatly-S _Little=17.94-9.40=8.54 decimetre ²

If the height of circular ring buoy net scraper cavity is h=10 millimeter=0.1 decimeter

Then the circular ring buoy net scraper cavity cumulative volume be V=S * h=8.54 * 0.1=0.854 decimetre ³

Then the cumulative volume of 4 plastic foams is the V=0.854/2=0.427 decimetre ³(gusset and cylindrical volume are ignored)

If the proportion of plastic foam is d=0.05

Then the gross weight of 4 plastic foams is g=V * d=0.427 * 0.05=0.0214 kilogram

Then the total displacement of 4 plastic foams is G=V * d=0.427 * 1=0.427 kilogram (sea water specific gravity d is at least 1)

Then the net buoyancy of 4 plastic foam generations is: F _Floating=G-g=0.427-0.0214=0.407 kilogram=407 grams

(proportion of plastics is between 0.98-1, so the weight of plastics in seawater can be ignored)

Then the net buoyancy of circular ring buoy net scraper generation is: F _Floating==0.407 kilogram=407 grams

This F is floating can to satisfy upwards free floating of circular ring buoy net scraper (at cylinder mould during perpendicular to the sea).

Claims

1. circular ring buoy net scraper: annular inner portion has net to scrape to form the annulus net scrapes, below annulus, the cavity that useful gusset is divided into, cylinder is arranged and stud with the plastic foam float in the middle of the cavity, have plastic dam with holes to be sleeved on the middle cylinder of cavity below the plastic foam float, baffle plate and cylinder hot melt are formed circular ring buoy net scraper together, it is characterized in that: cavity is arranged below the circular ring buoy net scraper, stud with the plastic foam float in the cavity.