Wenyu Farm Selection and Construction Technology

Wenyu is a kind of marine shellfish with high economic value. It is tender and delicious and nutrient-rich. It is the top grade product in Fujian and enjoys the reputation of being the best in the world. It is one of the fresh aquatic products exported by China.

First, farm selection

Wenyu has the habit of gradually shifting to a low-tide area or a sub-tidal shallow water area as it grows, showing the different characteristics of the individual-sized tidal areas. The breeding tide area is too high, the drying time is long, the feeding time is short, and the growth is slow; the drying time in the middle and lower tide area and the low tide area is short, the feeding time is long, and the growth is fast. Therefore, we should choose small waves, smooth flow, rich biological feed, good water quality, away from pollution sources, sandy bottom or sandy mud, sand content of 60% to 80%, flat beach surface, seawater proportion of 1.010~ Between 1.025 and mid-low tide sea areas were built.

Second, farm construction

1. Beach surface preparation New venues should remove the debris on the site and level the beach surface. The old site should be plowed. Specific approach: when the tide tide low tide organizes the manpower to use a shovel or a hoe, in the direction of the tide, the surface layer of 10 cm to 15 cm upturned, using tidal changes to effectively scour the bottom, depending on the silt deposition, the general plowing Once, if sediment deposition is serious, it can be plowed 2 to 3 times.

2. Seine setting
(1) Construction of anti-escape facilities in close proximity Construction of aquaculture sites is the key to ensuring that the Chinese eel is not lost during the breeding process. In general, the breeding grounds surround a double-layer net with an inner mesh of 2.5 cm and an outer mesh of 4 cm. There are two types of stakes on the building site: one is about 1.5 to 2.0 meters long, 6 to 8 centimeters in diameter, used to support mesh; the Other is a short pile that is 40 centimeters long and 3.0 to 4.5 centimeters in diameter. , Used to fix the buried mesh and the inside of the site to pull and piling.

(2) Method of burying nets Ditch depths of 25 cm to 30 cm along the edges of the planned site, straighten the ropes along the sides of the nets and put them into the ditch. Every 0.8 m along the ditch, a short pile is fixed and the net is fixed. When the sand is straightened and buried, the net is 0.7 meters to 1.2 meters above the beach surface. The long piles are staggered on both sides of the net in a herringbone shape and inserted obliquely into the beach at 50 cm to 60 cm with a pile spacing of 1.5 m. Using the ropes that pass through the mesh, the knots are wrapped around the long piles to maintain the same height as the meshes. From the one end, the stakes and the meshes form a single character. The purpose of obliquely inserted long stakes is to prevent the barnacles and nets on long piles from rubbing under the action of wind and waves after a large number of barnacles are attached, resulting in the phenomenon of broken ropes and cracked nets. This method of burying nets can also effectively avoid the massive loss of literary talents caused by typhoons and storm waves.

(3) The culture line at the aquaculture site has a migratory habit. It often forms mucous membranes with its own secretions and moves along the ebb tide direction. The function of the site pull line is to cut off the formed mucous band and prevent the clams from moving to the edge of the fence. Pull the line method: In the field, play the short piles parallel to the direction of the tide in a straight line, draw the string in a shape of a box, and the distance from the beach surface is 3 cm to 5 cm. After the cable is pulled out of the site, most of the clams are concentrated under the wire, under the pile, and on the edge of the wire. The distribution of clams in the entire culture site is relatively balanced. In places where wire is not pulled, there are a large number of clams that are densely populated at the low tide. The situation was not conducive to the food and breathing of the clams, which hindered the normal growth of clams and even caused the clams to die.

The 5XZ-L laboratory Gravity Separator is used for separating seeds by specific gravity difference. It effectively separates granule with heavy specific gravity ( as gravel, soil particles), and granule with light specific gravity (as mildewed seeds, seeds damaged by worms).


Working principle:


The lab gravity separator sieve bed is triangular shape. On the sieve bed, there are more aluminum punching holes under the hopper area. This design will help raw material stratification.

By the effect of the sieve bed vibration and air blowing from bottom, the raw material is well separated to different ranks. The material discharge outlets are at one side. Outlets are for light impurity, mixing material, good seeds. There are flexible plates on outlets end. These plates can be adjusted to divide area then getting desired sorting effect.




Laboratory Gravity Separator's sorting base on grain density difference. The gravity separator table is triangular structure. The gravity separator table vertical angle, horizontal angle, vibration frequency, bottom air blower volume are all adjustable. This can meet different dimension /density  seed sorting requirements. By using the gravity separator, you will seeds density distribution of this batch of seeds. It is an important seeds studying equipment.


Laboratory gravity separator construction:

laboratory gravity separator

1.    Feeding hopper

2.    Electromagnetism vibration feeder

3.    Gravity separator table

4.    Driving rotation system

5.    Control cabinet

6.    Bottom fan

7.    Machine frame


Laboratory seed gravity separator




50 kg/h

Air blower power

0.37 kw

Vibrating power

0.13 kw

Vibration frequency

0-600 times/min

Table board inclination



1000×700×1440 mm

lab seed separator

Lab Gravity Separator

Lab Gravity Separator,Laboratory Wheat Mini Destoner,Small Capacity Destoner Machine,Laboratory Gravity Separator