CN101103835A - A cleaning device and method for cleaning laver during processing - Google Patents

Abstract

The invention discloses a cleaning device and a cleaning method thereof in the process of laver processing. It comprises a cleaning pool and an auxiliary cleaning pool with the same volume as the cleaning pool. The pools are connected to each other through water flow pipes. The inlet of the water flow pipes is set near the bottom of the cleaning pool, and the outlet of the water flow pipes is set near the middle of the auxiliary cleaning pool. The water level of the outlet of the water flow pipes is not higher than that of the water flow pipes. , the water flow pipeline is provided with a valve, the cleaning tank is provided with a plurality of micropore air inlets around the pool wall, and the auxiliary cleaning pool is provided with a plurality of auxiliary micropore air inlets around the pool wall; the advantages of the present invention are reasonable design and simple structure , it has the function of keeping the shape of laver intact and less business loss, and can reduce energy consumption; in addition, EDTA-Na salt is added in the cleaning, which greatly reduces the heavy metal content in laver.

Description

A cleaning device and method for cleaning laver during processing

technical field

The invention relates to laver processing, in particular to a cleaning device and a cleaning method in the laver processing process.

Background technique

Seaweed is a kind of algae cultivated artificially, which has high commercial value and is a kind of green food. Since laver is naturally cultivated and grows in the ocean, there are impurities such as mud and sand in the harvested laver. Therefore, in the laver processing process, the laver must first be cleaned. The traditional laver cleaning method is: use manpower to wash the laver in the ocean or a pool filled with seawater to wash away the impurities in the laver, which requires more manpower and time, and the cleaning benefit is not high, and whether it is cleaned is related to It is related to human factors, and it is often not easy to clean; currently, in the industrial laver processing, a special cleaning device is used to clean the laver. The cleaning device includes a cleaning pool, and an electric mixer is arranged in the cleaning pool. The bottom of the cleaning tank is provided with a sewage outlet. The cleaning method is to put an appropriate amount of laver into the cleaning tank filled with seawater or the mixed water of seawater and fresh water, start the mixer, and use the agitation of the laver to separate the impurities in the laver from the laver, and the impurities will sink into the At the bottom of the pool, to achieve the purpose of cleaning impurities, after stirring, the laver is pumped to the next processing procedure for further processing, and then the sewage outlet is opened, and the impurities are discharged out of the pool; in order to clean the impurities in the laver, it is often necessary to change the water Clean it again, or transfer the laver to another cleaning device and clean it again. Utilize the above-mentioned cleaning device to clean the laver, although the manpower has been reduced and the cleaning efficiency has been improved, but in the stirring process, the laver is easily entangled and broken by the mixer. Bring difficulty, also caused the form damage of laver and the business loss of laver, reduced the laver quality of processing. In addition, seaweed contains heavy metal elements that are harmful to human body. For example, the Pb content of seaweed is generally 0.05-0.50 mg/kg (in dry weight). Long-term consumption of seaweed with high heavy metal content will cause heavy metal poisoning.

Contents of the invention

The technical problem to be solved by the present invention is to provide a cleaning device in the processing process of laver which can keep the form of laver intact and has less business loss.

Another object of the present invention is to provide a cleaning method in the laver processing process utilizing the above-mentioned cleaning device, which can obtain laver with complete form and less loss of commercial components, and can reduce the heavy metal content in the laver processed product.

The technical scheme adopted by the present invention to solve the above-mentioned technical problems is: a cleaning device in the laver processing process, including a cleaning tank, and also includes an auxiliary cleaning tank with the same volume as the cleaning tank, and the cleaning tank is the same as the cleaning tank. The above-mentioned auxiliary cleaning pools are set up high and low, and the above-mentioned cleaning pools are connected to each other through water flow pipes. The outlet of the water flow pipeline is set near the middle of the auxiliary cleaning pool, the level of the outlet of the water flow pipeline is not higher than the level of the inlet of the water flow pipeline, and the water flow pipeline is provided with a valve, so The cleaning pool is provided with a plurality of micropore air inlets around the pool wall, and the auxiliary cleaning pool is provided with a plurality of auxiliary micropore air inlets around the pool wall.

A sewage outlet is provided at the bottom of the cleaning pool, and a filter is provided between the inlet of the water flow pipeline and the sewage outlet.

An auxiliary sewage outlet is provided at the bottom of the auxiliary cleaning pool, and an auxiliary filter is provided between the outlet of the water flow pipe and the auxiliary sewage outlet.

There are 6 to 12 microporous air inlets, which are arranged near the top of the filter screen.

There are 6 to 12 auxiliary microporous air inlets, which are arranged above and close to the auxiliary filter net.

A vegetable discharge port is arranged between the outlet of the water flow pipe and the auxiliary filter net.

A cleaning method in the process of laver processing, comprising the following steps: 1), closing the valves of the sewage outlet and the water flow pipeline, injecting clean sea water into the cleaning pool, and then adding fresh laver to the clean water according to the weight ratio of 1:10-30. In seawater; (2), send air from the microporous air inlet, bubble for 10-30 minutes, and then let it stand for 3-6 minutes; (3), close the auxiliary sewage outlet and vegetable discharge outlet, open the valve of the water flow pipe, and clean The laver and part of the seawater in the pool flow into the auxiliary cleaning pool. After all the laver flows in, close the valve of the water flow pipeline, and add fresh water to the auxiliary cleaning pool so that the weight ratio of the laver and water is 1: 10-30. EDTA-Na salt with a volume of 3-15g/ ^m3 ; (4), air is supplied from the auxiliary microporous air inlet, bubbled for 10-30 minutes, then left to stand for 8-12 minutes, and the seaweed is discharged from the discharge port. The mouth of the dish is discharged into the next process; EDTA-Na salt can complex with heavy metals, so that the present invention can reduce the content of heavy metals in laver by 0.5 to 3.0 times compared with the existing cleaning method, and EDTA-Na salt can also be combined with laver. The inorganic As chelation effect reduces the content of As.

Above-mentioned fresh laver refers to the laver that drains the surface moisture after harvesting, or the laver that also drains the surface moisture after the first-processed dry laver that has been cleaned is soaked in water.

Compared with the prior art, the present invention has the advantage that an auxiliary cleaning tank with a lower position is set beside the cleaning tank, and the cleaning tank and the auxiliary cleaning tank are connected to each other through a water flow pipe, and a valve is arranged on the water flow pipe, and the outlet of the water flow pipe The water level is not higher than the level of the inlet of the water flow pipe. A plurality of micropore air inlets are arranged around the pool wall on the cleaning pool, and a plurality of auxiliary micropore air inlets are arranged around the pool wall on the auxiliary cleaning pool, so that in the cleaning pool When cleaning laver, use the microporous air inlet to send air into the water to make the water bubble, so that the laver fluctuates in the water to wash away most of the impurities, and then use the water flow pipe connecting the cleaning tank and the auxiliary cleaning tank to turn the laver into the water. The laver cleaned in the cleaning tank flows into the auxiliary cleaning tank, and the auxiliary microporous air inlet is also used to send air to make the water bubble, and further wash away the impurities on the laver, which solves the problem that the laver is easily entangled by the mixer and Broken problem, thereby keeping the form of laver intact and reducing the nutrient loss of laver; Simultaneously also simplifies the operation that needs pumping to twice cleaning of laver, has saved the energy consumption that will use pumping; Therefore the present invention is a The utility model relates to a cleaning device in the laver processing process which is reasonable in design, simple in structure, maintains the form integrity of laver, has less business loss, and can reduce energy consumption. In addition to using the above-mentioned cleaning device, the cleaning method of the present invention can clean laver with complete morphology and little loss of commercial components. In addition, EDTA-Na salt is added in the cleaning, so that the heavy metal content in laver is greatly reduced.

Description of drawings

Fig. 1 is the structural representation of embodiment 1.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

Example 1

A kind of cleaning device in the seaweed processing process as shown in Figure 1, comprises that diameter is 2 meters, and height is the cleaning pool 1 of 6 meters and auxiliary cleaning pool 2, and the setting position of cleaning pool 1 is 2.2 meters higher than auxiliary cleaning pool 2 , a sewage outlet 4 is arranged at the bottom of the cleaning pool 1, a filter screen 3 is arranged at a distance of 60 cm from the bottom above the bottom of the cleaning pool 1, and a pool wall is surrounded between 70 cm to 1 meter above the bottom of the cleaning pool 1 8 micropore air inlets 5 are provided, and the micropore air inlet 5 is connected with an air pump (not shown in the figure), and an auxiliary sewage outlet 6 is arranged at the bottom of the auxiliary cleaning pool 2, and the distance above the bottom of the auxiliary cleaning pool 2 The bottom 60 centimeters place is provided with auxiliary filter net 7, is provided with dish discharge port 8 on the pool wall apart from the bottom 1.5 meters above the bottom of auxiliary cleaning pool 2, is apart from the bottom 70 centimeters～1 meter above the bottom of auxiliary cleaning pool 2 Eight auxiliary micropore air inlets 9 are arranged around the wall of the pool, and the auxiliary micropore air inlet 9 is connected with the air pump (not shown in the figure). 10 is provided with a valve 11, the inlet 12 of the water flow pipeline 10 is arranged on the pool wall above the bottom of the cleaning tank 1 and is 90 cm away from the bottom, and the outlet 13 of the water flow pipeline 10 is arranged on the bottom of the auxiliary cleaning tank 2 and is 3.1 meters away from the bottom. On the wall of the pool at the place, the dish opening 8 is connected with the next procedure through the pipeline.

Example 2

A kind of cleaning device in the laver processing process is basically the same as embodiment 1, the only difference is that a vegetable discharge port 8 is arranged at the end of the auxiliary cleaning pool 2 .

Water and impurity after washing will be removed by manpower or power if sewage outlet 4 or auxiliary sewage outlet 6 are not established.

Filter screen 3 or auxiliary filter screen 7 are located at near the bottom of the pond and are near better, because the impurity of laver is generally not a lot.

The quantity of micropore air inlet 5 and auxiliary micropore air inlet 9 is established according to the size of the pond, and it is better to be located at the lower position of the pond, so that the bubbling effect is better.

Example 3

A cleaning method during laver processing, comprising the following steps: (1), closing the sewage outlet 4 and the valve 11, pumping 5 tons of clean seawater into the cleaning pool 1 with a water pump, and then adding the harvested surface water to drain the surface water 300 kilograms of fresh laver; (2), start the air pump of 300 W, just send air into seawater from microporous air inlet 5, make seawater bubble, thereby laver fluctuates in seawater, and bubbling 16 minutes, the Most of the impurities are blown down, and the impurities sink to the bottom of the pool through the filter screen 3, then turn off the air pump and let it stand for 5 minutes to silence the impurities; (3), close the auxiliary sewage outlet 6 and the vegetable discharge outlet 8, and open the water flow pipe 10 valve 11, the laver and part of the seawater in the cleaning tank 1 flow into the auxiliary cleaning tank 2, after all the laver flows in, close the valve 11 of the water flow pipeline 10, pump 2 tons of fresh water into the auxiliary cleaning tank 2, and then add EDTA-Na salt 45g; (4), start the air pump of 300 W, just send air from the auxiliary microporous air inlet 9 into the seawater mixed water, make the seawater bubble, thus laver fluctuates in seawater, bubbles for 20 minutes, laver The residual impurities in the medium are blown down, and the impurities sink to the bottom of the pool through the auxiliary filter screen 7, then turn off the air pump and let it stand for 10 minutes to silence the impurities, open the vegetable discharge port 8, and discharge the laver from the vegetable discharge port 8 to the next process. Then open the sewage outlet 4 and the auxiliary sewage outlet 6, clean the cleaning tank 1 and the auxiliary cleaning tank 2, and discharge impurities.

If the seaweed is larger, the air supply volume should also be increased.

If it is dried laver that has been pre-processed and cleaned, it must be soaked in water to become fresh laver and then cleaned.

If the content of heavy metals in laver is high, the amount of EDTA-Na salt added will also increase.

EDTA-Na salt can complex with heavy metals, so that the present invention can reduce the content of heavy metals in laver by 0.5-3.0 times compared with the existing cleaning method, and EDTA-Na salt can also integrate with inorganic As in laver to reduce the concentration of As. contain

Claims (7)

1. the cleaning device in the main laver process, comprise service sink, it is characterized in that also comprising an auxiliary service sink identical with described service sink volume, described service sink and described auxiliary service sink are height setting, be interconnected by water pipe between described service sink and the described auxiliary service sink, the import of described water pipe is arranged on the place, close bottom of described service sink, the outlet of described water pipe is arranged on the center near described auxiliary service sink, the horizontal plane of the outlet of described water pipe is not higher than the horizontal plane of the import of described water pipe, described water pipe is provided with valve, be provided with a plurality of micropore air inlets around pool wall on the described service sink, be provided with a plurality of assistant micropore air inlets around pool wall on the described auxiliary service sink.

2. the cleaning device in the main laver process as claimed in claim 1 is characterized in that being provided with sewage draining exit in the bottom of described service sink, is provided with screen pack between the import of described water pipe and described sewage draining exit.

3. the cleaning device in the main laver process as claimed in claim 1 or 2, it is characterized in that being provided with auxiliary sewage draining exit, between the outlet of described water pipe and described auxiliary sewage draining exit, be provided with the aided filter net in the bottom of described auxiliary service sink.

4. the cleaning device in the main laver process as claimed in claim 3 is characterized in that described micropore air inlet is set to 6～12, is arranged on the top near described screen pack.

5. the cleaning device in the main laver process as claimed in claim 4 is characterized in that described assistant micropore air inlet is set to 6～12, is arranged on the top near described aided filter net.

6. the cleaning device in the main laver process as claimed in claim 5 is characterized in that being provided with Pai Caikou between the outlet of described water pipe and described aided filter net.

7. the cleaning method in the laver process of utilizing the described cleaning device of claim 6, it is characterized in that the valve that comprises the steps: (1), close sewage draining exit and water pipe, clean seawater is injected in the service sink, by weight 1: 10～30, fresh laver is joined in the clean seawater again; (2), supply gas, bubbling 10～30 minutes left standstill 3～6 minutes then from the micropore air inlet; (3), close auxiliary sewage draining exit and Pai Caikou, open the valve of water pipe, laver in the service sink and part seawater just flow in the auxiliary service sink, after laver all flows into, close the valve of water pipe, add fresh water in auxiliary service sink, the weight ratio that makes laver and water is 1: 10～30, and adding weight again is water volume 3～15g/m ³EDTA-Na salt; (4), supply gas, bubbling 10～30 minutes left standstill 8～12 minutes then, opened Pai Caikou, and laver is discharged to the next process from row's dish mouth from the assistant micropore air inlet.

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