CN102783435A

CN102783435A - Floater net scraper

Info

Publication number: CN102783435A
Application number: CN2011101372510A
Authority: CN
Inventors: 敖志辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-05-17
Filing date: 2011-05-17
Publication date: 2012-11-21

Abstract

The invention discloses a floater net scraper which is used for automatically cleaning a marine aquaculture net cage underwater. A circular ring-shaped net scraper of which the inner ring is provided with a net scraper is moulded through one-time injection by using a plastic injection molding machine; the internal contour profile of a section between the inner ring and the outer ring of the circular ring-shaped net scraper takes the shape of an arc, and in smooth transitional condition with the inner edges of the inner ring and the outer ring of the circular ring-shaped net scraper respectively to form an inner cavity; 3 hollow cylinders are arranged inside the inner cavity; circular ring-shaped shallow grooves are formed at the bottoms of the inner cavities of the cylinders; and plastic circular sheets are embedded into the shallow grooves at the bottoms of the inner cavities of the 3 cylinders to form 3 sealed uniformly-distributed floater chambers so as to form the circular ring-shaped floater net scraper. The floater net scraper has the advantages as follows: materials are saved, the process is simplified, electricity consumption is lowered, pollution is prevented, and the production cost is greatly reduced.

Description

Buoy net scraper

Technical field

The present invention relates to agriculture marine buoyancy raft net cage culture to the preventing and kill off of fouling organism on the cylinder mould, is the buoy net scraper that cylinder mould is cleaned under water automatically.

Background technology

To prevent and kill off be the bottleneck problem that perplexs the mariculture industry sustainable development for a long time to fouling organism on the mariculture cylinder mould, and the fouling organism of how effectively preventing and kill off on the mariculture cylinder mould has become one of culture fishery important subject.In the recent period, the patent application of " circular ring buoy net scraper " and " ring-shaped hollow buoy net scraper " is accepted, but the annular net of these two patent applications to scrape section all be semicircle, unreasonable structure, volume and weight is bigger than normal, waste of material is serious.

The float chamber of " circular ring buoy net scraper " is that plastic bottle is scraped the formation that is threaded with the annular net, and plastic bottle adopts blow molding process, and is high to plastic material and requirement on machining accuracy, complex process, and power consumption is big, causes material and processing cost all high.

The float chamber of " ring-shaped hollow buoy net scraper " is that two cavity heat seals that two plastic dam and annular net are scraped are formed together; The smog that produces in the heat sealing die process pollutes atmosphere; Power consumption is big, and equipment heat sealing die machine costs an arm and a leg, and processing cost is too high.

Summary of the invention

In order to overcome the serious and problems such as complex process, processing and manufacturing cost height of the said goods unreasonable structure, waste of material, the present invention scrapes section with the annular net and changes camber line shape into by semicircle, makes whole height reduce more than 30%; Can save material 20%; And utilize the physical characteristic that plastics expand with heat and contract with cold and the elasticity of plastics itself, and adopt to embed technology, form the float chamber that the annular net is scraped; Technology is simple, the saving of labor, save time, and has significantly reduced the manufacturing cost of power consumption and product.

The technical scheme that the present invention adopts is: the annular net that endless belt has net to scrape in being injection molded into injection molding machine of plastic is disposable is scraped; The annular net is scraped the interior profile of section between the inner and outer ring to be a camber line and to be connected with the inward flange rounding off that the annular net is scraped inner and outer ring respectively; Form an inner chamber; Have 3 hollow cylinders in the inner chamber, cylinder bottom inner chamber has the shallow slot of annular.The annular net being scraped just when injection molding machine of plastic is lifted down, when surplus temperature is loose, the plastics disk is embedded respectively in the shallow slot of 3 cylinders bottom inner chambers, form the equally distributed float chamber of 3 sealings, form circular ring buoy net scraper.

The invention has the beneficial effects as follows: save material, reduce power consumption, prevent to pollute, the saving of labor, save time, province's equipment, can reduce the manufacturing cost more than 30%.

Description of drawings

Below in conjunction with accompanying drawing the present invention is further specified.

Fig. 1 is the structure chart of circular ring buoy net scraper of the present invention.

Fig. 2 is the A-A section amplification figure of circular ring buoy net scraper float chamber and the B-B section amplification figure that the annular net is scraped.

Fig. 3 is the circular ring buoy net scraper fundamental diagram.

Fig. 4 is the front view and the local section amplification figure of steering wheel shape locating ring.

8. annular nets are scraped among Fig. 2,9. the plastics disk.

1. buoyant spheres among Fig. 3,2. lifting rope, 3. raft body, 4. steering wheel shape locating ring, 5. circular ring buoy net scraper, 6. cylinder mould, 7. sandbag, the position on sea when A representes full sea, the position on sea when B representes half tide.

When the 3-1 among Fig. 3 is slug flow (during full sea flow velocity be similar to zero), the residing relative position figure of cylinder mould and circular ring buoy net scraper, 3-2 among Fig. 3 and 3-3 are half tide trends when increasing to a certain degree, the residing relative position figure of cylinder mould and circular ring buoy net scraper.

Embodiment

With injection molding machine of plastic disposable be injection molded in endless belt have net to scrape; Inner chamber between the inner and outer ring has the annular net of 3 hollow cylinders and scrapes (8); Scrape (about temperature 60 degree) when just breaking away from injection molding machine of plastic at the annular net; Plastics disk (9) is embedded the annular net respectively scrape in the shallow slot of 3 cylindrical cavities of (8), form 3 float chambers, form circular ring buoy net scraper (5).When circular ring buoy net scraper (5) when bulk temperature drops to normal temperature, receive the influence of plastics heat expansion condensate reason characteristic, cylinder can tightly wrap plastics disk (9), makes it play sealing function and can not break away from shallow slot.The plastics disk can adopt a plurality of plastics disks of Shooting Technique once-forming.

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; And steering wheel shape locating ring (see figure 4) is installed on lower clapboard on the cylinder mould; Make the steering handle part can stop circular ring buoy net scraper (5), make it in seawater, all can not break away from cylinder mould up and down.

The underwater operation principle of circular ring buoy net scraper is: trend can cause cylinder mould correspondingly to change the pivot angle size at different directions every day with fluctuation twice change direction every day of morning and evening tides and the size of flow velocity.During slug flow (flow velocity approaches zero during full sea), cylinder mould is basically perpendicular to the sea and does swing slightly, and circular ring buoy net scraper leans on the top of the buoyancy free floating of self to cylinder mould, does not require circular ring buoy net scraper acting (like the 3-1 among Fig. 3) this moment; Along with trend constantly increases, cylinder mould can be swung to direction of tide, and when the angle of swing acquired a certain degree, circular ring buoy net scraper moved to the bottom (seeing the 3-2 among Fig. 3) of cylinder mould under the pulling of trend; Tidal current speed slows down gradually then, and cylinder mould is returned to the position on vertical sea, and circular ring buoy net scraper in the opposite direction repeats above-mentioned action (seeing the 3-3 among Fig. 3).Circular ring buoy net scraper is realized two big strokes up and down every day on cylinder mould under the effect of trend.

In said process, when wave formed on the sea on cylinder mould (6) top, cylinder mould (6) can rise to certain height by wave with buoyant spheres (1); In this rapid movement; Receive the seawater drag effects, always less than cylinder mould (6), both will produce relative motion to the movement velocity of circular ring buoy net scraper (5); This is that the high frequency motion of power has impulsive force with the wave, makes fouling organism can't on cylinder mould, adhere to existence.

It can be that power is realized cleaning automatically cylinder mould under water with trend and wave that this annular net is scraped.

Sandbag (7) can effectively prolong the time of cylinder mould perpendicular to the sea; Less or when approaching zero when tidal current speed; Under the effect of gravity; Can make cylinder mould perpendicular to the sea, create strong condition to cylinder mould top free floating, alleviate the excessive requirement of circular ring buoy net scraper buoyancy for circular ring buoy net scraper.The weight of sandbag (7) should be according to the flow velocity size decision of culturing the marine site, the big marine site of trend more greatly, otherwise littler.Sandbag (7) is not that technical scheme is set for this reason; General in the bigger breed marine site of trend; The cylinder mould bottom all hangs with sandbag; Mainly be to prevent the excessive swing of cylinder mould, this technical scheme is to have made full use of this strong condition, and its existence makes the volume (buoyancy requirement) that reduces circular ring buoy net scraper in the bigger marine site of trend significantly become possibility.

The buoyancy of circular ring buoy net scraper size, can be through rough the calculating of following straightforward procedure:

(dimension conversion is become decimetre according to the given size of Fig. 2; Keep two-decimal behind the decimal point and annular net above the cylinder is scraped inner chamber and partly be simplified to cylinder) through the method for diameter reduction size and height dimension; If the average diameter of float chamber is: 58-3=55; Radius is R=0.55/2 decimetre (average diameter after the simplification less than 58, value 55).

Then the floor space of float chamber is: S=π R ²=3.14 * (0.55/2) ²=0.24 decimeter ²

If the average height of float chamber is h=30-3=27 is h=0.27 decimetre (average height after the simplification is less than 30, and value 27 is seen Fig. 2)

Then the volume of float chamber is: V=Sh=0.24 * 0.27=0.065 cubic decimeter

Sea water specific gravity d is at least 1, and the drainage discharge of each float chamber is: G=V * d=0.065 * 1=0.065 kilogram=65 grams

Then the net buoyancy of 3 float chamber generations is: floating=3 * 65=195 gram of F (proportion of plastics is between 0.98-1, near the proportion of seawater, so the weight that the net of annular is scraped in seawater can be ignored).

F is floating can overcome that net is scraped and cylinder mould between frictional force, when cylinder mould is basically perpendicular to the sea, float to the top of cylinder mould.

The formation of float chamber is compared with the patent application of " circular ring buoy net scraper " in this technical scheme, and the manufacturing cost of plastics disk reduces more than 60% than the manufacturing cost of plastic bottle; Compare with " ring-shaped hollow buoy net scraper " patent application, saved heat sealing die Processes and apparatus plastic hot matched moulds machine, energy-saving effect is obvious.

Claims

1. endless belt has net to scrape in the buoy net scraper, annular, it is characterized in that: the annular net scrapes that the interior profile of section is a camber line between the inner and outer ring; Be connected with inner and outer ring inward flange rounding off respectively, form an inner chamber, have 3 hollow cylinders in the inner chamber; The hollow cylinder intracavity bottom has the annular shallow slot; The plastics disk is embedded respectively in the shallow slot of 3 cylindrical cavity bottoms, form the equally distributed float chamber of 3 sealings, form the buoy net scraper of annular.