CN210808817U - Automatic water changing net cage device for shellfish larvae - Google Patents

Abstract

The utility model relates to the field of aquaculture, in particular to an automatic water exchange cage device used in the process of cultivating shellfish larvae. The automatic water exchange cage device in the process of larvae cultivation realizes automatic water exchange in the process of larvae cultivation, and solves the problems of high mortality and high labor cost of the existing shellfish water exchange cage larvae, which includes a cage frame, a cage The frame includes an inner frame and an outer frame, the inner frame is arranged in the outer frame, the bottom of the inner frame is closed, a filter mesh sleeve is arranged on the periphery, a hard drainage pipe is arranged through the center of the inner frame, a drainage hole is arranged on the drainage hard pipe, and the upper part of the inner frame is arranged The reducer that drives the inner frame to rotate 180 degrees back and forth also includes a water exchange hose. One end of the water exchange hose is put into the drain pipe, and the reducer is fixed on the outer frame. Drive the sieve to rotate together, reduce the adhesion rate of larvae on the sieve, and realize automatic water change.

Description

Automatic shellfish larvae water exchange cage device

technical field

The utility model relates to the field of aquaculture, in particular to an automatic water exchange cage device used in the process of cultivating shellfish larvae and a method for using the same.

Background technique

my country has a huge marine shellfish aquaculture industry. Shellfish aquaculture is an important member of the marine aquaculture industry, and its output accounts for 80% of the total output of marine aquaculture in my country. Common shellfish such as clams, oysters and scallops as well as gastropods are delicious, nutritious and of great economic value. With the continuous development of artificial breeding technology, high-efficiency factory-based seedling breeding methods have received more attention.

In the process of shellfish nursery, daily water change in the early planktonic larval stage is an important task. At present, the breeding of shellfish seedlings of bulk varieties in my country basically follows the traditional method 20-30 years ago. The other end of the drain pipe is placed at a lower level (lower than the minimum water exchange level of the cultivation tank), and the water is sucked out by the principle of siphon. The disadvantage of this method is that the shellfish larvae are easily adsorbed on the sieve silk when using siphon to absorb water, thus causing the death of the larvae. Therefore, workers need to constantly shake the water exchange cage to prevent the larvae from being adsorbed on the sieve silk, which greatly increases the The labor cost of raising seedlings is increased, and the workers shake the gaps between different water exchange cages, and there is still a serious phenomenon that the larvae are adsorbed on the sieve silk, thereby increasing the mortality of the larvae. Therefore, the level of automation (facility) for shellfish seed breeding is insufficient and needs to be improved and upgraded urgently.

In view of the above-mentioned problems in the prior art, the present invention provides an automatic water-exchange cage device and a method for using the same in the process of cultivating shellfish larvae to overcome the above-mentioned defects.

Utility model content

For the problems existing in the prior art, the purpose of this utility model is to provide an automatic water exchange cage device for shellfish larvae cultivation process that saves labor and improves the survival rate of larvae, and realizes automatic water exchange during the larvae cultivation process. water, to solve the problems of high mortality and high labor cost of existing shellfish water exchange cage larvae.

For achieving the above object, the technical scheme adopted by the present utility model is as follows:

An automatic water exchange cage device for shellfish larvae cultivation, which comprises a cage frame, the cage frame includes an inner frame and an outer frame, the inner frame is arranged in the outer frame, the bottom of the inner frame is closed, and a filter net cover is arranged on the periphery, The center of the inner frame runs through the inner frame with a hard drain pipe, and a drain hole is arranged on the hard drain pipe. The upper part of the inner frame is provided with a reducer that drives the inner frame to rotate 180 degrees back and forth. It also includes a water change hose, one end of which is placed into the drainage hard pipe, and the reducer is fixed on the outer frame.

Further, the drainage hard pipe is fixed in the center of the inner frame through the fixing rings at the upper and lower ends of the inner frame.

Further, the diameter of the inner frame is 8-12 cm smaller than the diameter of the outer frame, and its bottom end is 5-8 cm higher than the bottom end of the outer frame.

Further, it also includes a floating ball, the floating ball is fixed near the middle of the cage frame, and is connected to the frame through a connection line.

Further, the filter screen is a sieve silk, and the mesh number of the sieve silk is determined according to the type and size of the shellfish larvae.

Further, the inner frame is driven by a gear reducer, and the gear reducer is arranged on the upper part of the cage.

A method of using the automatic water exchange cage device described in any one of the above-mentioned shellfish larvae cultivation process, it is characterized in that: it comprises the following steps:

A. According to the size of the shellfish larvae, select the appropriate mesh number of the sieve silk, and install the sieve silk outside the inner frame;

B. Put the water exchange cage in the water, turn on the gear reducer, and rotate the inner frame 180° back and forth;

C. Then place one end of the water change hose in the hard drainage pipe, and use the siphon principle to automatically change the water.

The shellfish described in this technical solution include bivalve mollusks such as hard-shelled clams, Chinese clams, clams, Philippine clams, green clams, oysters, bay scallops, scallops, and scallops, and gastropods such as red snails.

On the basis of conforming to common knowledge in the art, the above-mentioned preferred conditions can be combined arbitrarily to obtain the embodiments of the present invention.

The utility model has the following advantages:

(1) The present utility model provides an automatic water exchange cage device for shellfish larvae cultivation and its use method, including cage frame, gear reducer, filter screen, and water exchange hose. The cage frame is cylindrical, made of stainless steel, divided into an inner frame and an outer frame. The outer frame has a large diameter and is mainly used to support the entire device; the inner frame has a small diameter, and its bottom end is 5-8 cm higher than the bottom end of the outer frame. , Weld a drainage hard pipe fixing ring at the upper and lower central positions of the inner frame respectively, the drainage hard pipe is located in the fixing ring, and one end of the water exchange hose is put into the drainage hard pipe, and the water exchange operation is performed by using the siphon principle. The filter net is sleeved outside the inner frame, and the upper end of the filter net is fixed on the upper end of the cage frame through the rope body on the outer wall; the gear reducer is located on the upper part of the water exchange cage, and controls the inner frame to rotate 180° back and forth. Using the method of using the device can save labor cost by more than 80%, and the adhesion rate of larvae on the filter screen is reduced by 70%-90% when changing water.

(2) The cultivating device of the present utility model also includes a floating ball, which is fixed near the middle of the cage frame and is connected to the frame through a thin wire. The purpose of setting the floating ball is to make the water exchange cage float on the water surface, preventing the As the water level decreased, more sieve silk was exposed to the air, causing the larvae attached to the sieve silk to die.

(3) The power of the gear reducer of the cultivating device of the utility model is 400W, which can control the inner frame to rotate 180° back and forth, which can effectively prevent the larvae from adhering to the screen silk when changing water.

(4) The cultivating device of the utility model can realize automatic water exchange, without the need for workers to constantly shake the cages, thereby effectively saving labor costs.

(5) The material used in the present utility model is stainless steel, which is non-toxic and harmless, not easy to rust, the device is simple to operate, durable, and effectively reduces the cost of seedling raising.

Principle of use: The inner frame is rotated back and forth 180° to drive the screen silk to rotate together, reducing the adhesion rate of larvae on the screen silk and realizing automatic water exchange.

Description of drawings

Figure 1 Existing traditional water exchange cages;

Fig. 2 is a kind of automatic shellfish larvae water exchange cage of the present utility model;

Fig. 3 gear reducer of a kind of automatic shellfish larvae water exchange cage of the present utility model;

Among them, 1-Reducer, 2-Drainage hard pipe inlet, 3-Gear, 4-Drainage hard pipe, 5-Screen silk, 6-Outer frame, 7-Inner frame, 8-Motor plate, 9-Motor backing plate, 10- motor socket, 11- anti-clockwise rotation direction of inner frame, 12- clockwise rotation direction of inner frame

Detailed ways

The present utility model will be described in further detail below in conjunction with the accompanying drawings.

Example 1

As shown in Figure 2, an automatic water exchange cage device for shellfish larvae cultivation includes a cage frame, the cage frame includes an inner frame 7 and an outer frame 6, the inner frame 7 is arranged in the outer frame 6, and the inner frame 7 is arranged in the outer frame 6. The bottom of the frame 7 is closed, and a filter mesh cover is arranged on the periphery. The center of the inner frame 7 is provided with a drainage pipe 4 through the inner frame 7, and a drainage hole is arranged on the drainage pipe 4. The upper part of the inner frame 7 is provided with a reducer that drives the inner frame to rotate 7180 degrees back and forth. 1. The reducer 1 is fixed on the outer frame 6 , and it also includes a water exchange hose, and one end of the water exchange hose is put into the drain pipe 4 . The drainage hard pipe 4 is fixed in the center of the inner frame through the fixing rings at the upper and lower ends of the inner frame. The diameter of the inner frame is 8-12 cm smaller than that of the outer frame, and its bottom end is 5-8 cm higher than the bottom end of the outer frame. It also includes a floating ball, which is fixed near the middle of the cage frame and connected to the frame through a connection line. The filter screen is a sieve 5, and the mesh number of the sieve 5 is determined according to the type and size of the shellfish larvae. In this embodiment, the bottom end of the inner frame is 5 cm higher than the bottom end of the outer frame. The reducer 1 is fixed on the outer frame 6 through the motor backing plate 9 and the motor plate 8 , and then connected to the inner frame 7 through the motor nipple 10 and the gear 3 . Example 2

The difference between this embodiment and Embodiment 1 is that the bottom end of the inner frame is 8 cm higher than the bottom end of the outer frame in this embodiment, and the shellfish selected in this embodiment is the larvae of Rhododendron vulgaris, with an average shell length of 600 μm, and the experimental conditions are: : The water temperature is 23-25℃, the salinity is 30-33, the pH value is 8.0-8.2. The experimental group placed the automatic shellfish larvae water exchange cage in the cultivation tank, turned on the gear reducer, and rotated the inner frame 180° back and forth. The control group was a traditional water exchange cage.

The cultivation device used in this example is the same as that in Example 1, and the specific parameters are: the number of sieves is 160 meshes.

See Table 1 for the effect of water exchange on the larvae of the red snail.

Table 1 The effect of water exchange on larvae

It can be seen from the water exchange effect in Table 1 that the adhesion rate of larvae on the filter screen is reduced by more than 70%-90% when the water is changed, and the use of this device can save labor costs by more than 80%. The device has the beneficial effects of reducing the adhesion rate of larvae and saving labor costs.

Example 3:

The same parts as in Example 2 will not be repeated, the difference is: the bivalve larvae selected in this example are scallops, and the average shell length is 230 μm; the bottom end of the inner frame in this embodiment is higher than the bottom end of the outer frame. 7 cm, and the number of sieves is 260.

Table 1 shows the effect of water exchange for scallop larvae.

Table 2 The water exchange effect of scallop larvae

From the water exchange effect in Table 2, it can be seen that the adhesion rate of larvae on the filter screen is reduced by more than 70%-90% when the water is changed, and the use of this device can save labor costs by more than 80%. In summary, this water exchange device The invention has the beneficial effects of reducing the adhesion rate of larvae and saving labor costs.

It should be emphasized that the embodiments described in the present utility model are illustrative rather than restrictive, so the present utility model includes but is not limited to the embodiments described in the specific implementation manner. Other embodiments derived from the novel technical solution also belong to the protection scope of the present invention.

Claims (6)

1. The utility model provides an automatic change shellfish larva and trade water box with a net device which characterized in that, it includes box with a net frame, and the box with a net frame includes inside casing and frame, and the inside casing sets up in the frame, and the inside casing bottom is sealed, and the periphery sets up the filter screen cover, and inside casing central authorities run through the inside casing and set up the drainage hard tube, set up the wash port on the drainage hard tube, and the upper portion of inside casing sets up the 180 degrees speed reducers that make a round trip to rotate of drive inside casing, and it still includes trades the water hose, and the one end of trading the water hose.

2. The automatic shellfish larva water changing net cage device according to claim 1, characterized in that: the water discharge hard pipe is fixed in the center of the inner frame through the fixing rings at the upper end and the lower end of the inner frame.

3. The automatic shellfish larva water changing net cage device according to claim 1, characterized in that: the diameter of the inner frame is 8-12 cm smaller than that of the outer frame, and the bottom end of the inner frame is 5-8 cm higher than that of the outer frame.

4. The automatic shellfish larva water changing net cage device according to claim 1, characterized in that: the floating ball is fixed near the middle of the net cage frame and is connected with the frame through a connecting line.

5. The automatic shellfish larva water changing net cage device according to claim 1, characterized in that: the filter screen is made of bolting silk, and the mesh number of the bolting silk is determined according to the type and the size of the shellfish larvae.

6. The automatic shellfish larva water changing net cage device according to claim 1, characterized in that: the inner frame is driven by a gear reducer which is arranged at the upper part of the net cage.

Images