CN108703062A - A kind of algae culturing equipment and algae culturing method - Google Patents

Abstract

The invention discloses a kind of algae culturing equipment, including holder, driving device, main shaft and keep hanging seaweed keep hanging device；It is provided with the driving device on the bracket, the main shaft is vertically arranged, and the driving device is connect with the main shaft, drives the main axis；The main shaft is connect with the device that keeps hanging, and device rotation is kept hanging described in drive.The algae culturing equipment and algae culturing method of the present invention realizes the dynamic cultivating seaweed in aquaculture pond hydrostatic, and seaweed growth speed is fast, ripe early, and the range of scatter of sporinite is wider；The algae culturing equipment and algae culturing method of the present invention makes seaweed be not easy to adhere to mud, when harvesting seaweed, avoids waste of manpower to clear up the mud on seaweed, to save manually；The present invention algae culturing equipment space it is small, utilization rate is high, it is easy to operate, be convenient for large-scale popularization.

Description

A kind of algae culturing equipment and algae culturing method

Technical field

The present invention relates to algae culturing technical field, especially a kind of algae culturing equipment and the use algae culturing The algae culturing method of equipment.

Background technology

In recent years, flourishing with sea-farming, pond culture scale expands year by year, especially emerging in recent years The holothurian pond risen cultivates upsurge, and growth momentum is swift and violent, and the trend for continuing to increase is presented.The upsurge of holothurian pond cultivation, though Bring larger raising to the fishery output value, but its own the problem of also gradually show.Highdensity pond culture leads to each breeding Grow that pond water quality declines, dissolved oxygen reduces, nitrogen and phosphorus content is significantly exceeded, and cultivated animals disease is caused to take place frequently, there is hair in whens phenomena of mortality It is raw；Cultivating pool a large amount of medications for prevention Animal diseases, bring Safety of Aquatic Products hidden danger；Cultivating pool waste water largely discharges, Not only pollution of marine environment, while causing cultivating pool self-pollution, vicious circle is caused, these phenomenons seriously constrain pond The sustainable development of cultivation.

Domestic and international many thalassographers, algologist and environmentalist have realized that seaweed in environmental organism reparation Effect.It is many it is demonstrated experimentally that tangleweed cultivation and the mixed breeding of marine economy animals and plants or support, inhaled by sea-plant The harmful substances such as heavy metal ion and ammonia nitrogen, nitrite nitrogen, phosphate such as zinc, cadmium in seawater are taken, are had in marine environment reparation There is positive meaning.Therefore, tangleweed is cultivated in marine economic animal culture zone, carries out algae and animal mixed breeding, you can Eutrophic extent is reduced, mitigates cultivated animals disease, and algae yield can be improved, is to ensure that mariculture industry continues health hair The important channel of exhibition.But when hydrostatic cultivation, it is slow and easy to stick to be easy to cause seaweed growth speed in aquaculture pond for tangleweed The problem of attached mud.

Invention content

The technical solution adopted by the present invention is：The present invention provides a kind of algae culturing equipment, solve in the prior art It is existing in aquaculture pond when hydrostatic cultivating seaweed, seaweed growth speed it is slow and easily adherency mud the problem of.

In order to solve the above-mentioned technical problem, the present invention is achieved by the following scheme：

A kind of algae culturing equipment, including holder, driving device, main shaft and keep hanging seaweed keep hanging device；In the branch The driving device is provided on frame, the main shaft is vertically arranged, and the driving device is connect with the main shaft, drives the master Shaft rotation is dynamic；The main shaft is connect with the device that keeps hanging, and device rotation is kept hanging described in drive.

Further, turntable is provided on the main shaft, the turntable is rotated synchronously with the main shaft；It is described to keep hanging dress It sets including rotating arm, strut arm and strut, one end of the rotating arm is connected on the turntable, the other end and the strut One end of arm connects, and the strut arm connects the strut.

Further, rotating arms horizontal setting, the strut arm are vertically arranged, on the rotating arm, with One end of the strut arm connection is welded with sleeve, and the strut arm is socketed with the sleeve；The strut is horizontally disposed, And the intermediate position of the strut is connect with the strut arm.

Further, the strut is provided with multiple, and multiple struts are spaced on the length direction of the strut arm Setting.

Further, the described device that keeps hanging is provided with multiple, and is distributed on the circumferencial direction of the main shaft.

Further, the upper end of the main shaft being provided with coil of wire, the coil of wire is rotated synchronously with the main shaft, Multiple steel wire ropes are provided on the coil of wire, multiple steel wire ropes are distributed in umbrella, and multiple steel wire ropes and multiple rotating arms It connects one to one.

Further, the algae culturing equipment further includes a frequency converter, and the driving device includes motor and speed reducer, The motor is connect with the speed reducer, and the speed reducer is connect with the main shaft；The frequency converter is connect with the motor.

Preferably, the algae culturing equipment further includes balancing frame, and the balancing frame passes through balancing bolt and the holder Connection, the motor and speed reducer are mounted on the balancing frame.

Based on above-mentioned algae culturing equipment, the invention also provides a kind of algae culturings using the algae culturing equipment Method, the algae culturing method include the following steps：

(1) seaweed seedling is kept hanging into the keeping hanging on device of the algae culturing equipment；

(2) according to sunlight strength adjust described in keep hanging the strut of device at a distance from the water surface；

(3) device that keeps hanging is made to rotate.

Further, the speed for keeping hanging device rotation is 1.5~3 revs/min；It is described to keep hanging device rotation 8 daily ~10 hours.

The beneficial effects of the invention are as follows：

1, algae culturing equipment and algae culturing method of the invention realize the dynamic cultivating seaweed in aquaculture pond hydrostatic, Seaweed growth speed is fast, ripe early, and the range of scatter of sporinite is wider；

2, algae culturing equipment and algae culturing method of the invention make seaweed be not easy to adhere to mud, when harvesting seaweed, keep away Waste of manpower is exempted to clear up the mud on seaweed, to save manually；

3, algae culturing equipment space of the invention is small, utilization rate is high, it is easy to operate, be convenient for large-scale popularization.

Description of the drawings

Fig. 1 is the structural schematic diagram of one embodiment of algae culturing equipment proposed by the invention；

1, holder；1-1, support leg；1-2, support chassis；2, balancing frame；3, motor；4, speed reducer；5, main shaft；6, steel wire Disk；7, turntable；8, steel wire rope；9, rotating arm；10, strut arm；11, strut；13, lifting rope；

Fig. 2 is part-structure schematic diagram in Fig. 1；

1, holder；1-1, support leg；1-2, support chassis；2, balancing frame；12, balancing bolt；

Fig. 3 is the structural schematic diagram that device is kept hanging in Fig. 1；

7, turntable；8, steel wire rope；9, rotating arm；10, strut arm；11, strut；13, lifting rope；14, adjusting bolt；15, Steel wire buckle；16, sleeve；17, T connector；18, adjusting bolt；19, adjusting bolt；

Fig. 4 is the flow chart of one embodiment of algae culturing method proposed by the invention；

Fig. 5 is the flow chart of another embodiment of algae culturing method proposed by the invention；

Fig. 6 is the flow chart of another embodiment of algae culturing method proposed by the invention；

Specific implementation mode

The specific implementation mode of the present invention is described in more detail below in conjunction with the accompanying drawings.

Embodiment one, the algae culturing equipment of the present embodiment mainly by holder 1, driving device, main shaft 5, keep hanging device etc. It constitutes, shown in Figure 1, holder 1 is placed in aquaculture pond, has driving device, holder 1 to primarily serve support and make on holder 1 With；The main shaft 5 is placed vertically, and the driving device is connect with main shaft 5, and driving device driving spindle 5 rotates；Main shaft 5 and extension Device connection is supported, when main shaft 5 rotates, drive keeps hanging device and rotates together.Kept hanging seaweed on keeping hanging device, seaweed with It keeps hanging the rotation of device and rotates.

Holder 1 is mainly made of a horizontal frame and four support leg 1-1 etc., shown in Fig. 1, Fig. 2, four supports Leg 1-1 is connect with horizontal frame bottom, and uniformly distributed in the bottom of horizontal frame.In order to increase support leg 1-1 and cultivation The forced area in bottom of pond portion avoids support leg 1-1 from being absorbed in aquaculture pond bottom, is respectively welded in the lower end of four support leg 1-1 One support chassis 1-2.The height of holder 1 is set according to the aquaculture pond depth of water.

In order to drive keep hanging device rotation, turntable 7 is provided on main shaft 5, turntable 7 is connect with device is kept hanging, turntable 7 and Main shaft 5 rotates synchronously.Device is kept hanging mainly to be made of rotating arm 9, strut arm 10, strut 11 etc., shown in Fig. 1, Fig. 3, One end of rotating arm 9 is connect with the turntable 7 on main shaft 5, and the other end of rotating arm 9 is connect with one end of strut arm 10, strut Arm 10 is connect with strut 11.Driving device driving spindle 5 rotates, and turntable 7 is rotated synchronously with main shaft 5, to drive rotating arm 9 Rotation then drives strut arm 10 to rotate, and then strut 11 is driven to rotate.Seaweed, 11 turns of strut have been kept hanging on strut 11 It is dynamic, to drive seaweed to rotate.

As a kind of preferred design of the present embodiment, rotating arm 9 is horizontally disposed, and strut arm 10 is vertically arranged, support Bar 11 is horizontally disposed, shown in Fig. 1, Fig. 3.One end of rotating arm 9 is connect by adjusting bolt 14 with turntable 7, and adjusting is passed through Bolt 14 makes rotating arm 9 and turntable 7 keep certain elasticity, to make rotating arm 9 remain horizontality；It is rotating The other end of arm 9 is welded with a vertical sleeve 16, and strut arm 10 connects together with sleeve 16, realize strut arm 10 with The connection of rotating arm 9.It is also welded with T connector 17 in the upper end of strut arm 10, the length of the horizontal part of T connector 17 is more than sleeve 16 width, when strut arm 10 is moved downwardly to extreme position, the horizontal part of T connector 17 can be overlapped on the top of sleeve 16 Portion, it is shown in Figure 3.Meanwhile strut arm 10 can be fastenedly connected by adjusting bolt 18, adjusting bolt 19 with sleeve 16.

In order to increase the stability for keeping hanging device operating, strut arm 10 is preferentially selected as square cylinder, compatible, set Cylinder 16 is selected as square sleeve.The length of strut arm 10 is specifically set according to the depth of water of aquaculture pond and the seaweed species of cultivation It is fixed.

In pressing from both sides seedling, the upgrowth situation for observing frond, the length for measuring frond, the actual mechanical process such as collect seedling, need to adjust When height of the whole strut arm 10 apart from aquaculture pond bottom, unscrew adjusting bolt 18 and adjusting bolt 19, promotes or reduce strut Arm 10, i.e. strut arm 10 are moved upwardly or downwardly, and strut arm 10 is adjusted to the height convenient for practical operation, is then twisted Tight adjusting bolt 18 and adjusting bolt 19, make strut arm 10 be fastenedly connected with sleeve 16, to make strut arm 10 apart from foster The height for growing bottom of pond portion is maintained.

In addition, when selecting the cultivation water layer of frond, it is also desirable to height of the strut arm 10 apart from aquaculture pond bottom is adjusted, To make frond be in the cultivation water layer suitable for growth.

The intermediate position of strut 11 is connect with strut arm 10.For the ease of keeping hanging seaweed, it is also associated on strut 11 Seedling rope 13 clips to seaweed on seedling rope 13 shown in Fig. 1, Fig. 3, and the both ends of seedling rope 13 are fixed to the both ends of strut 11. When strut 11 rotates, seedling rope 13 and seaweed rotation are driven.

Strut 11 can be provided with multiple, and multiple struts 11 are horizontally disposed, and on the length direction of strut arm 10 Interval setting.In the present embodiment, connection can be selected there are two strut 11 on strut arm 10, the distance of two struts 11 is 400mm。

The described device that keeps hanging can also be provided with multiple, keep hanging the quantity of device depending on the cultivation scale of seaweed. In order to make full use of space and make 5 stability of rotation of main shaft, multiple devices that keep hanging are distributed on the circumferencial direction of main shaft 5.

In order to mitigate the stress of turntable 7 and 9 connecting portion of rotating arm, the upper end of main shaft 5 is provided with coil of wire 6, steel wire Disk 6 is rotated synchronously with main shaft 5, and multiple steel wire ropes 8 are provided on coil of wire 6, and multiple steel wire ropes 8 are distributed in umbrella, Duo Gegang Cord 8 connects one to one with multiple rotating arms 9.Steel wire buckle 15 is both provided on each rotating arm 9, steel wire rope 8 passes through steel Screw thread 15 is connect with rotating arm 9, shown in Figure 3.

When main shaft 5 rotates, coil of wire 6, turntable 7 are rotated synchronously with main shaft 5, and coil of wire 6 is driven by steel wire rope 8 to be revolved Pivoted arm 9 rotates, while turntable 7 drives rotating arm 9 to rotate, to strut arm 10, strut 11, seedling rope 13, seaweed rotation, i.e. steel Wire tray 6, turntable 7 drive simultaneously keeps hanging device rotation, to alleviate the connecting portion of turntable 7 and rotating arm 9 because drive is kept hanging Device rotates and the power received.Simultaneously as pulling force of the steel wire rope 8 to rotating arm 9, to alleviate the company of turntable 7 and rotating arm 9 The power that socket part position is received because overcoming the gravity for keeping hanging device.Therefore, because coil of wire 6 is connect by steel wire rope 8 with rotating arm 9, The stress for alleviating turntable 7 and 9 connecting portion of rotating arm avoids turntable 7 with the connecting portion of rotating arm 9 since stress is excessive And damage, to extend the usage time of equipment.

In the present embodiment, driving device is mainly made of motor 3, speed reducer 4 etc., and motor 3 is connect with speed reducer 4, is subtracted Fast machine 4 is connect with main shaft 5, shown in Figure 1.Speed reducer 4 increases torque, the lower end of main shaft 5, which is connected to, to be subtracted for reducing rotating speed On fast machine 4, main shaft 5 is rotated by speed reducer 4.

The algae culturing equipment is also provided with a frequency converter, and frequency converter is arranged in the control room on bank, frequency conversion Device is connect by water-proof cable with motor 3, and frequency converter is used for the rotating speed of regulation motor 3, to adjust the rotating speed of main shaft 5.

Being horizontally disposed on holder 1 has balancing frame 2, and shown in Fig. 1, Fig. 2, balancing frame 2 passes through balancing bolt 12 and branch Frame 1 connects, and motor 3, speed reducer 4 are mounted on balancing frame 2.There are four the settings of balancing bolt 12, in the edge circumference of balancing frame 2 Distribution.In keeping hanging device rotation process, due to aquaculture pond bottom, holder 1 may run-off the straight, lead to balancing frame 2 tilt, and balancing frame 2 can be made to remain horizontality by adjustment bolt 12, to make to be connected on speed reducer 4 Main shaft 5 keep vertical state, steadily selected to make to keep hanging device.

In the present embodiment, the height of holder 1 is selected as 2200mm~2500mm, and the length of main shaft 5 is selected as 2500mm The length of~3000mm, rotating arm 9 are 3000mm, and the length of strut arm 10 is 1500mm~1800mm, and strut 11 is selected as The pvc pipe of long 3500mm, diameter 40mm.

When using algae culturing equipment, seaweed is kept hanging on device first, then adjust strut arm 10 away from Height from aquaculture pond bottom so that strut 11 is located at the water surface hereinafter, then tightening adjusting bolt 18 and adjusting bolt 19, makes support Bar arm 10 is fastenedly connected with sleeve 16.After being powered up, by the rotating speed of frequency converter regulation motor 3, make the rotating speed of motor 3 It reduces, for speed reducer 4 so that rotating speed reduces again, speed reducer 4 drives main shaft 5 to rotate.By adjusting frequency converter so that main shaft 5 Velocity of rotation is 1.5~3 revs/min, keeps hanging device rotation to drive, then drives seaweed with 1.5~3 revs/min of turn Speed rotation.

When hydrostatic cultivating seaweed, frond surface easily attaches mud and absorbs nutritive salt range and is limited, normal to influence frond Growth, while the range of scatter of ripe sporinite is limited.Using the algae culturing equipment cultivating seaweed of the present embodiment, due to frond Rotated growth in water so that frond is not easy to adhere to mud, therefore frond surface is cleaner；And due to algae culturing equipment and The rotation of frond so that cultivation pool inner water is in microfluidic state, is conducive to frond and absorbs nutritive salt, reduces the eutrophy in aquaculture pond Substance, while promoting frond fast-growth, ripe in advance and be conducive to ripe sporinite and diffuse to entire cultivating pool.

Below by the comparison for using algae culturing equipment dynamic cultivation sargassum and raft frame static state being used to cultivate sargassum Experiment, the advantages of explanation using algae culturing equipment dynamic cultivation sargassum.

In this experiment, the device that keeps hanging of algae culturing equipment is provided with 24, due to each strut arm for keeping hanging device Therefore 10 connections share 48 struts, each long 3500mm of strut there are two strut 11, the overall length of 48 struts is 168000mm, the Miao Sheng overall lengths being furnished with also are 168000mm.The Miao Sheng overall lengths being furnished in hydrostatic raft frame are also 168000mm.

The algae culturing equipment and hydrostatic raft frame is individually positioned in the aquaculture pond of two equal conditions.It is supported in seaweed Sargassum seedling body is grown on equipment and hydrostatic raft frame while keeping hanging, initial seedling amount of pressing from both sides is 22.68kg.

When the sargassum receptacle maturation kept hanging in algae culturing equipment is diffused, algae culturing equipment harvests frond 295kg, sporinite diffuse to entire aquaculture pond.

When the sargassum receptacle maturation kept hanging on hydrostatic raft frame is diffused, hydrostatic raft frame harvests frond 273.5kg, spore The range of scatter of body is confined to raft frame peripheral extent.

Moreover, the sargassum kept hanging in algae culturing equipment shifts to an earlier date than the sargassum receptacle maturation kept hanging on raft frame 5~6 days.

Thus experiment using the sargassum ratio of algae culturing equipment dynamic cultivation using hydrostatic raft frame static state as can be seen that supported The sargassum speed of growth grown is fast, receptacle ripe morning, sporinite range of scatter are wide.

Based on above-mentioned algae culturing equipment, it is also proposed that a kind of algae culturing method, shown in Figure 4, specific method Step is：

Step 11：Seaweed seedling is kept hanging into the keeping hanging on device of the algae culturing equipment.

Seaweed seedling is clipped on seedling rope 13 first, is then connected to seedling rope 13 on the strut 11 for keeping hanging device.

Step 12：Adjustment keeps hanging the strut 11 of device at a distance from the water surface.

Strut 11 is adjusted at a distance from the water surface according to intensity of illumination.

In the daylight intensity smaller period, height of the adjustment strut arm 10 apart from aquaculture pond bottom, to Strut 11 is had adjusted at a distance from the water surface so that uppermost strut 11 is located at the water surface hereinafter, and being 100mm at a distance from the water surface ~200mm so that seaweed is in be grown suitable for intensity of illumination section.

In the daylight intensity bigger period, such as 10:00~15:00, adjustment strut arm 10 is apart from aquaculture pond The height of bottom, so as to adjust strut 11 at a distance from the water surface so that uppermost strut 11 is located at the water surface or less and and water The distance in face is 300mm~400mm, so that seaweed is in and is grown suitable for intensity of illumination section.

Step 13：Make to keep hanging device rotation.

Power on, adjust frequency converter, make main shaft 5 with 1.5~3 revs/min of rotational speed, device is kept hanging to drive With 1.5~3 revs/min of rotational speed, then drive seaweed seedling with 1.5~3 revs/min of rotational speed.Moreover, keeping hanging dress Set 8~10 hours of rotation daily, the morning 8:00~9:00 starts to rotate, afternoon 17:00~18:00 stops operating.

The algae culturing method can adjust seaweed at a distance from the water surface according to actual conditions, seaweed is made to locate always In suitable for intensity of illumination section fast-growth；The rotary speed of the cultivation equipment is adjusted simultaneously, both so that seaweed surface is without attached Mud generates, and promotes seaweed growth, in advance maturation, while again can be energy saving.

Below by taking sargassum thunbergii and sargassum as an example, specifically describe algae culturing method the step of.

Shown in Figure 5, the specific method step that sargassum thunbergii is cultivated using the algae culturing equipment is：

Step 21：Sargassum thunbergii seedling is clipped on seedling rope 13.

Every three plants are used to clip to sargassum thunbergii seedling on seedling rope 13 for the folder seedling mode of cluster, in every cluster, strain spacing is 40mm~60mm makes each young plant have enough growing spaces.

Step 22：Seedling rope 13 is connected on strut 11.

The both ends for the seedling rope 13 for clipping seedling are connected to the both ends of strut 11, and every 300mm with nylon clasp by seedling rope 13 are fixed on strut 11 so that seedling rope 13 and the connection of strut 11 are more secured.

Step 23：Adjustment keeps hanging the strut 11 of device at a distance from the water surface.

It is identical as step 12.

Step 24：Make to keep hanging device rotation.

Power on, adjust frequency converter, it is 2~3 revs/min to make the velocity of rotation of main shaft 5, to make to be hung on seedling rope 13 Foster sargassum thunbergii seedling is in aquaculture pond with 2~3 revs/min of rotational speed.It keeps hanging device and rotates 9 hours, the morning 8 daily: 00 starts to rotate, afternoon 17:00 stops operating.

Shown in Figure 6, the specific method step that sargassum is cultivated using the algae culturing equipment is：

Step 31：Sargassum seedling is clipped on seedling rope 13.

Every two plants are used to clip to sargassum seedling on seedling rope 13 for the folder seedling mode of cluster, in every cluster, strain spacing is 120mm~140mm makes each young plant have enough growing spaces.

Step 32：Seedling rope 13 is connected on strut 11.

The both ends for the seedling rope 13 for clipping seedling are connected to the both ends of strut 11, and every 300mm with nylon clasp by seedling rope 13 are fixed on strut 11 so that seedling rope 13 and the connection of strut 11 are more secured.

Step 33：Adjustment keeps hanging the strut 11 of device at a distance from the water surface.

It is identical as step 12.

Step 34：Make to keep hanging device rotation.

Power on, adjust frequency converter, it is 1.5~2.5 revs/min to make the velocity of rotation of main shaft 5, to make in seedling rope 13 On the sargassum seedling that keeps hanging in aquaculture pond with 1.5~2.5 revs/min of rotational speed.Keeping hanging device, rotation is 9 small daily When, the morning 8:00 starts to rotate, afternoon 17:00 stops operating.

Sargassum thunbergii using above method cultivation and sargassum, frond surface are fast, ripe without adherency mud, the speed of growth Early, ripe sporinite diffuses to entire aquaculture pond.

Certainly, above description is not limitation of the present invention, and the present invention is also not limited to the example above, this technology neck The variations, modifications, additions or substitutions that the those of ordinary skill in domain is made in the essential scope of the present invention, should also belong to this hair Bright protection domain.

Claims (8)

1. a kind of algae culturing equipment, it is characterised in that：Including holder, driving device, main shaft and keep hanging seaweed keep hanging device； It is provided with the driving device on the bracket, the main shaft is vertically arranged, and the driving device is connect with the main shaft, is driven Move the main axis；The main shaft is connect with the device that keeps hanging, and device rotation is kept hanging described in drive；It is set on the main shaft It is equipped with turntable, the turntable is rotated synchronously with the main shaft.

2. algae culturing equipment according to claim 1, it is characterised in that：The rotating arms horizontal setting, the strut Arm is vertically arranged, and the one end being connect on the rotating arm, with the strut arm is welded with sleeve, the strut arm with The sleeve socket；The strut is horizontally disposed, and the intermediate position of the strut is connect with the strut arm.

3. algae culturing equipment according to claim 2, it is characterised in that：The strut is provided with multiple, multiple struts Setting is spaced on the length direction of the strut arm.

4. algae culturing equipment according to claim 3, it is characterised in that：It is described keep hanging device be provided with it is multiple, and It is distributed on the circumferencial direction of the main shaft.

5. algae culturing equipment according to claim 5, it is characterised in that：Further include a frequency converter, the driving device Including motor and speed reducer, the motor is connect with the speed reducer, and the speed reducer is connect with the main shaft；The frequency converter It is connect with the motor.

6. algae culturing equipment according to claim 6, it is characterised in that：Further include balancing frame, the balancing frame passes through Balancing bolt is connect with the holder, and the motor and speed reducer is mounted on the balancing frame.

7. a kind of algae culturing method using the algae culturing equipment described in claim 7, it is characterised in that：The seaweed is supported Method is grown to include the following steps：

(1) seaweed seedling is kept hanging into the keeping hanging on device of the algae culturing equipment；

(2) according to sunlight strength adjust described in keep hanging the strut of device at a distance from the water surface；

(3) device that keeps hanging is made to rotate.

8. algae culturing method according to claim 8, it is characterised in that：The speed for keeping hanging device rotation is 1.5 ~3 revs/min；The device that keeps hanging rotates 8~10 hours daily.