CN105230552B - A fish breeding water filtration system - Google Patents

Abstract

The purpose of the present invention is to provide a water filtration system for fish breeding, which solves the problem that the mesh of the filter screen is easy to block when filtering water, and at the same time, the filtered water quality meets the fish breeding requirements, and can provide sufficient water for breeding. water. In order to achieve the above object, the present invention adopts the following technical solutions: a water filtration system for fish breeding, comprising a filter unit, and a water stirring device is arranged on the side of the filter screen of the filter unit. Under the condition of ensuring good filtering effect, the filtering system solves the clogging problem of the filter screen by adding a stirring device, and can ensure the supply requirement of a large amount of aquaculture water.

Description

A fish breeding water filtration system

technical field

The invention belongs to the field of fish breeding, and in particular relates to a water filtration system for fish breeding.

Background technique

In actual production, fish breeding water needs to be filtered, mainly filtering the following substances, including wild fish and their eggs, and zooplankton. The specific reasons are: 1. Prevent wild fish from entering the hatchery Eggs and hatched fry are eaten. In addition, prevent the fry or eggs of wild fish from entering, and compete with the cultured perch for food in the later stage. 2. Prevent zooplankton from entering the hatching tank and crushing the fertilized eggs. Some large zooplankton can even kill the fry that have just emerged from the membrane. 3. The existing filtering device: the contact area of the filter screen is small. Due to the large amount of breeding water and the large water flow per unit area of the filter screen, it is easy to accumulate dirt and cause blockage. It is necessary to manually brush off the sundries accumulated on the screen surface. In large-scale production Among them, it often takes a lot of manpower and material resources to remove the sundries on the filter screen, which increases the cost of breeding; although some filter screens are not easy to block, the filtering effect is not good, and the water quality is not good enough to directly affect fish reproduction.

Contents of the invention

The object of the present invention is to provide a water filtration system for fish breeding, which solves the problem of mesh blockage when the filter screen filters water, and at the same time, the water quality after filtration meets the fish breeding requirements.

To achieve the above object, the present invention adopts the following technical solutions:

A water filtration system for fish breeding comprises a filtration unit, and a water stirring device is arranged on the side of the filter screen of the filtration unit.

Further technical solution: the stirring device is an impeller type aerator.

A further technical solution: the filter unit includes a first-stage filter, a second-stage filter, a third-stage filter, and a fourth-stage filter that are sequentially intercepted along the flow direction of the water body, and the apertures of the filter screens are gradually reduced.

A further technical solution: the stirring device is located beside the third-stage filter screen and/or the fourth-stage filter screen.

Further technical solution: the filter unit also includes a water pump and a water suction pipe, the water pump pumps the water body from the reservoir into the hatching tank through the water suction pipe, and the first-level filter and the second-level filter are respectively located at the water inlet of the water suction pipe , Outlet.

A further technical solution: the third-stage filter and the fourth-stage filter are located in the hatching tank, and the impeller-type aerator is arranged on the side of the four-stage filter away from the third-stage filter.

Further technical solution: the aperture of the secondary filter screen is 100-180 mesh, the secondary filter screen is a net pocket structure, and the net pocket mouth is set on the water outlet of the suction pipe; the aperture diameter of the three-stage filter screen is It is 180 mesh, and the pore size of the fourth-stage filter is 200 mesh.

A further technical solution: the three-stage filter screen and the four-stage filter screen are fixed on corresponding brackets, the bracket for fixing the three-stage filter screen is fixedly connected with the bracket for fixing the four-stage filter screen, and used for The support for fixing the four-stage filter screen is also fixedly connected with the support frame arranged on the side of the four-stage filter screen away from the three-stage filter screen.

A further technical solution: the length of the three-stage filter and the four-stage filter is 10-60 meters.

A further technical solution: there are several impeller-type aerators, which are arranged sequentially along the arrangement direction of the four-stage filter nets.

The beneficial effects of the present invention are:

(1) The filter system solves the clogging problem of the filter screen by adding a stirring device under the condition of ensuring a good filtering effect, and can ensure the supply requirements of a large amount of aquaculture water.

(2) The filtration system is fully mechanized, which saves manpower, is easy to operate, and improves the filtration efficiency.

(3) The impeller-type aerator is selected as the agitation device, which can not only increase the oxygen for the water body, but also avoid the clogging of the filter screen, and the use effect is obvious.

(4) The step-by-step filtration of the primary filter screen, secondary filter screen, third-stage filter screen, and fourth-stage filter screen further ensures the water quality requirements of fish breeding water.

Description of drawings

Fig. 1, 2 are structural representations of the present invention.

The meanings of the reference signs in the figure are as follows:

10—filter unit 20—impeller aerator 11—first-stage filter

12—Second stage filter 13—Third stage filter 14—Fourth stage filter 15—Pumping pipe

30—Reservoir 40—Hatching pond

Detailed ways

As shown in Figure 1:

A fish breeding water filtration system includes a filtration unit 10, and a water stirring device is arranged on the side of the filter screen of the filtration unit 10. Generally speaking, when the water body passes through the filter screen in the filter unit 10, a large amount of sundries are easily attached to the screen surface, which is easy to cause the blockage of the mesh, and by setting the water body stirring device on the side of the filter screen, the stirring device will It has a certain stirring effect on the water body beside the filter screen, and the sundries in the water body will always be in a stirring state under the action of the stirring device, so when the water body passes through the screen screen, the sundries will not flow with the water body and adhere The mesh is clogged on the surface of the filter screen, even if the debris is attached to the mesh surface, the debris can be washed down by the action of the agitating device, which will not cause the problem of mesh clogging.

The stirring device is an impeller aerator 20 . The impeller type aerator 20 can also aerate the water while providing sufficient oxygen to the fish breeding water body, so that the toxic and harmful substances in the water body can be volatilized, the concentration of harmful substances can be reduced, and the water quality can be improved. The rotation of its impeller of the aerator 20 can also make the water body be in a state of agitation, prevent foreign matter in the water body from adhering to the mesh surface of the filter screen, and avoid the blockage of the filter screen mesh. The impeller type aerator 20 avoids the traditional manual brushing process and reduces the labor cost of farming.

The filter unit 10 includes a primary filter 11 , a secondary filter 12 , a third filter 13 , and a fourth filter 14 , which are successively intercepted along the water flow direction, and the apertures of the filters gradually decrease. Here the primary filter screen 11 is mainly used to intercept larger fish, shrimps, sundries, prevents from destroying the water pump, and its mesh should be the largest; the secondary filter screen 12 is mainly used to intercept zooplankton; the tertiary filter screen 13 It is mainly used to intercept small impurities in the water body, such as small miscellaneous fish and fish eggs; the four-stage filter 14 further filters the small impurities in the water body, and its mesh size is the smallest, so as to ensure that the filtered water body meets the breeding requirements of perch.

The stirring device is located beside the third-stage filter screen 13 and/or the fourth-stage filter screen 14 . Since tiny impurities in the water body are more likely to cause blockage of the mesh, agitating devices are set on the side of the relatively smaller three-stage filter screen 13 and the fourth-stage filter screen 14, which can effectively avoid the three-stage filter screen 13, four-stage filter screen 14, etc. The meshes of the four-stage filter screen 14 are blocked by tiny impurities, which eliminates the manual brushing operation, saves manpower, and improves the filtration efficiency. Here the impeller type aerator 20 should not be set too far away from the filter screen, otherwise the effect of washing away the stolen goods cannot be reached.

The filter unit 10 also includes a water pump and a water suction pipe 15, and the water pump pumps water from the reservoir 30 into the hatching pond 40 through the water suction pipe 15. The water inlet and water outlet; the three-stage filter screen 13 and the four-stage filter screen 14 are located in the hatching tank, and the described impeller aerator 20 is far away from the three-stage filter screen 13 in the four-stage filter screen 14 Arranged on one side. Here, the reservoir 30 is generally a river or a ditch, and the primary filter 11 is arranged in the river or the ditch at a distance from the front end of the suction pipe. The primary filter screen 11 passes through the effect of the water pump, and the water body to be filtered in the reservoir 30 is filtered through the primary filter screen 11 successively, enters the water suction pipe 15, and the secondary filter screen 12 filters and enters the hatching tank. 1. The four-stage filter screen 14 is located in the hatching pond, so the hatching pond is divided into two parts. The water body of the above-mentioned filtration process flows through the three-stage filter screen 13 and the four-stage filter screen 14 by the one side area of the hatch pond to obtain re-filtering treatment, and finally Makes the water flowing into the other side of the hatchery tank available for fish reproduction. At the same time, the impeller type aerator 20 can be arranged on the side far away from the third stage filter screen 13 in the four-stage filter screen 14 to achieve the purpose of avoiding debris from blocking the mesh. If the water flow rate is slow, the impeller type aerator 20 here You can choose one with less power. The water pump used for pumping water is generally a 3kw one, and the specification and quantity of the water pump can be determined according to the water consumption. Here, when the water storage tank 30 is built, the water outlet position will be higher than the hatching tank 40, so as to ensure that water can automatically flow to the hatching tank 40, and the size of the water flow is controlled by the valve simultaneously.

The pore size of the secondary filter screen 12 is 100-180 mesh, the secondary filter screen 12 is a net pocket structure, and the net pocket mouth is sleeved on the water outlet of the suction pipe 15 . Promptly at the water outlet of suction pipe 15, cover one deck to intercept the net pocket of zooplankton to form secondary filter screen 12, and described net pocket generally has 5 meters long. The mesh of the net bag is generally between 100-180 mesh, and the mesh should not be too dense. If it is too dense, the net bag will be filled with zooplankton soon due to the fast water inflow. Therefore, the choice of mesh size plays a key role in the normal and orderly filtration.

Preferably, the pore size of the third-stage filter screen 13 is 180 mesh, and the pore size of the fourth-stage filter screen 14 is 200 mesh. The selection of the mesh size here is mainly to further purify the water quality, so as to obtain the water quality that satisfies the breeding use.

The three-stage filter screen 13 and the four-stage filter screen 14 are all fixed on corresponding supports, and the support for fixing the three-stage filter screen 13 is fixedly connected with the support for fixing the four-stage filter screen 14, and is used for fixing The support of the four-stage filter screen 14 is also fixedly connected with the support that is arranged on the side of the four-stage filter screen 14 away from the three-stage filter screen 13 . Brackets and brackets can be made of steel frame structure. The brackets and brackets can make the filter screen be well fixed and supported in the hatching tank, so that the filter screen is not easy to be washed down or washed away by the water flow, and the structure is stable, which is beneficial to the filtration of hatching water. normal operation.

The length of the three-stage filter screen 13 and the four-stage filter screen 14 is 10-60 meters. The three-stage filter screen 13 and the four-stage filter screen 14 are very long, generally the length of a side of the hatch tank 40, and the use is generally 50-60 meters at most, and some adjustments can also be made according to the hatch tank size. The traditional filter screen is very short, the short one is less than 1 meter, and the long one is only a few meters. Due to the large water consumption during the breeding period, the short filter screen will accumulate more dirt per unit area due to the large water flow, and the filter screen will soon be blocked. , it is difficult to provide a large amount of breeding water in time. However, the length of the filter screen designed by the present invention is longer. When the same water consumption is used, the water flow per unit area is small, and the accumulated dirt is less, which is difficult to block. The water waves and spray can clean the stolen goods very well, which saves manpower, and at the same time can ensure sufficient breeding water.

There are several impeller-type aerators 20 arranged sequentially along the arrangement direction of the four-stage filter screens 14 . According to the size of the hatching tank and the filter screen, the number of impeller type aerators 20 can be selected to achieve the purpose of filtering the water body and avoiding clogging.

Claims (4)

1. a kind of fish reproduction water filtering system, it is characterised in that: including filter element (10), the filter element (10) Strainer side is equipped with water body agitating device；

The agitating device is paddle aerator (20)；

The filter element (10) includes one for successively intercepting the aperture of filter screen of setting along water body circulating direction and being gradually reduced Grade filter screen (11), secondary filter (12), three-stage filtration net (13), level Four filter screen (14)；

The agitating device is located at the side of three-stage filtration net (13) and/or level Four filter screen (14)；

The filter element (10) further includes water pump, drinking-water pipe (15), and water body is passed through pumping from reservoir (30) by the water pump Water pipe (15) is pumped into hatchery (40), and the primary filter (11), secondary filter (12) are located at drinking-water pipe (15) Water inlet, water outlet；

The three-stage filtration net (13), level Four filter screen (14) are located in hatchery (40), the paddle aerator (20) side in level Four filter screen (14) far from three-stage filtration net (13) is arranged；

The three-stage filtration net (13) and level Four filter screen (14) is each attached on corresponding bracket, for fixing three-stage filtration The bracket of net (13) is fixedly connected with the bracket for fixing level Four filter screen (14), and for fixing level Four filter screen (14) Bracket is also fixedly connected in level Four filter screen (14) far from the support of three-stage filtration net (13) side with setting.

2. filtration system as described in claim 1, it is characterised in that: secondary filter (20) aperture is 100-180 Mesh, the secondary filter (12) is string bag structure, and string bag muzzle is set to the water outlet of drinking-water pipe (15)；The three-level Filter screen (13) aperture is 180 mesh, and level Four filter screen (14) aperture is 200 mesh.

3. filtration system as described in claim 1, it is characterised in that: the three-stage filtration net (13), level Four filter screen (14) length is 10-60 meters.

4. filtration system as described in claim 1, it is characterised in that: the paddle aerator (20) has several, edge The arragement direction of level Four filter screen (14) is sequentially arranged.