CN106857378A - Cultivation shrimp ponds dirt collection blowdown apparatus - Google Patents

Abstract

The invention provides a sewage collection and discharge device for a cultured shrimp pond. The sewage collection and discharge device for a cultured shrimp pond comprises a sewage discharger provided at the bottom of the shrimp pond and the center of the shrimp pond. The surface of the sewage discharger is provided with a screen cover, and the bottom of the screen cover is connected The filter screen and the sewage discharger are provided with a water partition wall, the bottom surface of the water partition wall is connected with the bottom of the shrimp pond, the center of the water partition wall is provided with a sewage outlet, and the sewage discharge port is connected with a sewage discharge pipe. According to the hydrostatic pressure of the water body itself, the sewage enters the sewage outlet from the surroundings of the filter through the screen cover. The screen cover completely covers the filter and is impermeable. The longitudinal section is tapered to form a wedge-shaped hydrostatic pressure on the top of the screen cover. , making it easier for the sewage to be sucked into the filter. The sewage discharger is installed at the bottom of the center of the shrimp pond, which can make use of the taper, gravity and the centrifugal effect of the inner circulation of the shrimp pond to make the sediment accumulate along the bottom of the pond to the center of the pond, and the effect of sewage collection and discharge can be achieved by opening the valve on the sewage pipe .

Description

Sewage collection and discharge device for aquaculture shrimp pond

technical field

The invention belongs to the technical field of sewage discharge devices for aquaculture ponds, in particular to a sewage collection and discharge device for aquaculture shrimp ponds.

Background technique

Shrimp farming has made an important contribution to the economic development of my country's marine fishery. In recent years, my country's shrimp aquaculture industry has developed rapidly, and its aquaculture area and output rank among the top in the world. While making achievements, the pollution of the shrimp farming industry itself is becoming more and more serious. These pollutions come from the residual bait and the metabolites of prawns. According to the traditional aquaculture equipment system, the polluted water in the aquaculture pond is directly discharged into the nearby sea area, which will inevitably affect the safety of the water body in the long run. Pollution of the local sea area, destruction of the coastal ecological balance, leading to the prevalence of large-scale shrimp diseases in the breeding area, and the occurrence of red tides along the coast, seriously threatening the development of the shrimp farming industry. Therefore, there is an urgent need for an effective and sustainable scientific method to solve the concentration and discharge of sewage in the aquaculture pond, timely remove the residual bait and metabolites of prawns in the pond, and energy-saving and efficient feasible measures and devices for maintaining the safety of the water environment in the pond .

At present, the sewage treatment methods of shrimp ponds in my country mainly use biology and chemistry to decompose and precipitate sewage, but these methods are complicated in process and costly, uneconomical, impractical, and unpopular. There are also some latest technologies that use physical methods and use the principle of hydrodynamic drive to realize a system that can automatically collect and discharge sewage without adding any biochemical drugs.

Existing technologies such as authorized announcement number CN 102696534 B, Chinese invention authorized patent document A kind of drainage system at the bottom of pond culture This invention discloses a sewage system at the bottom of pond culture, including a pond main body. Slope, a sewage outlet is provided at the lowest point of the pond bottom, an escape net is arranged at the sewage outlet, and the main body of the pond communicates with the sewage pipeline system through the sewage outlet at the bottom of the pond. This invention carries out scientific design and scientific layout for the current pond culture and drainage project, and implements the scientific assembly of comprehensive technologies such as physical and biological purification, so that the pond can be automatically desilted, and at the same time, the pond does not need to be cleaned for 5 to 10 years, which is good for fish growth. Create a good environment, farmers achieve sustainable and healthy farming, ensure the quality and safety of aquatic products and lay the foundation for farmers to scientifically raise fish to become rich and well-off. However, the sewage pipes are easy to age and absorb pollutants after long-term use. How to use hydropower to realize automatic pollution cleaning There is also room for improvement.

Contents of the invention

Aiming at the above technical problems, the present invention provides a sewage collection and discharge device for aquaculture shrimp ponds, which uses the principle of fluid dynamics to realize automatic sewage collection and discharge, has high sewage discharge efficiency, and the sewage pipes are not easy to block, wear and corrode.

The technical solution adopted by the present invention for the above-mentioned technical problems is: sewage collection and discharge device for cultured shrimp ponds, including a sewage discharger provided at the bottom of the shrimp pond and the center of the shrimp pond, a screen cover is provided on the surface of the sewage discharger, and a screen cover is connected to the bottom of the sewage discharger. The filter screen and the sewage discharger are provided with a water partition wall, the bottom surface of the water partition wall is connected with the bottom of the shrimp pond, the center of the water partition wall is provided with a sewage outlet, and the sewage discharge port is connected with a sewage discharge pipe. According to the hydrostatic pressure of the water body itself, the sewage enters the sewage outlet from the surroundings of the filter through the screen cover. The screen cover completely covers the filter and is impermeable. The longitudinal section is tapered to form a wedge-shaped hydrostatic pressure on the top of the screen cover. , making it easier for the sewage to be sucked into the filter. On the one hand, the filter screen is to protect the safety of the shrimp, and on the other hand, it can filter out large particles of pollutants to avoid clogging of the sewage outlet. The sewage discharger is installed at the bottom of the center of the shrimp pond, which can make use of the taper, gravity and the centrifugal effect of the inner circulation of the shrimp pond to make the sediment accumulate along the bottom of the pond to the center of the pond, and the effect of sewage collection and discharge can be achieved by opening the valve on the sewage pipe .

Preferably, the screen cover is conical with a taper of 100-145°, and the screen cover and the filter are connected by threads or pipe collars. In order to form a wedge-shaped hydrostatic pressure on the top of the screen cover, the sewage is more easily sucked into the filter screen, and the screen cover and the filter screen are not easy to separate or fall off, which can prevent shrimp from being absorbed into the sewage pipe.

As a preference, the bottom of the shrimp pond is conical, with a taper of 100-150°. Using the conicity, gravity and the centrifugal effect of the inner circulation of the shrimp pond, the sediment gathers along the bottom of the pond to the center of the pond to achieve automatic sewage collection. Effect.

Preferably, the filter screen is a metal filter screen, the mesh of the metal filter screen is 2-40 mesh, and the metal filter screen adopted has a long service life, is economical and reliable, has good anti-corrosion performance, and is safe and firm.

Preferably, the water separation wall is composed of evenly distributed water diversion blocks, and the angle between the water diversion blocks is 20-50°, which can change the flow characteristics of the sewage to enhance the circulation at the bottom of the pool and improve the hydrodynamic conditions.

Preferably, the inner wall of the sewage pipe is provided with an anti-corrosion coating, and the anti-corrosion coating includes the following weight ratio components: Cr3C2-NiCr: Ni55: WC-Co: NiCrBSi: silver-based solder: TaC: NbC: C ₃₈ H ₇₆ N ₂ O ₂ =10~35: 0.5~1: 18~33: 26~41: 16~25: 11~17: 13~19: 0.7~1, which can effectively prevent the sewage pipe from being corroded by sewage or worn by some hard and small impurities during long-term use In the case of damage, it can also enhance the strength of the inner wall of the sewage pipe, reduce the maintenance or replacement frequency of the sewage pipe, and the sewage pipe is not easy to block and can efficiently complete the sewage discharge work.

As a preference, the outer wall of the shrimp pond is rectangular, and the diameter of the sewage discharger is 1/10~3/10 of the long side of the outer wall of the shrimp pond, which can effectively use the hydrostatic pressure of the water body itself to pass through the screen cover to complete the sewage entering the sewage outlet from the surroundings of the filter. , and the water pressure will not cause damage to the sewage discharger.

As a preference, the sewage outlet is conical, with a taper of 90~130°, which is beneficial for sewage to enter the sewage pipe, and the sewage is discharged faster. Regular sewage.

Compared with the prior art, the beneficial effect of the present invention is that the sewage discharger is arranged at the bottom of the center of the shrimp pond. According to the hydrostatic pressure of the water body in the shrimp pond, the present invention completes the water entering the sewage outlet from the surroundings of the filter through the screen cover. The screen cover completely covers the filter layer and is impervious to water. The tapered longitudinal section is to form a wedge-shaped hydrostatic pressure on the top of the screen cover, making it easier for water to be sucked into the filter layer. On the one hand, the filter screen is to protect the safety of the shrimp, and on the other hand, it can filter out large particles of pollutants to avoid blockage of the sewage outlet. The centrifugal effect of the circulation in the shrimp pond can make the pollutants gather at the center of the bottom. At the same time, the hydrodynamic force at the position of the rotating shaft in the shrimp pond is also the weakest. The purpose of strengthening the circulation at the bottom of the pond and improving the hydrodynamic conditions is to change the flow characteristics of the water body through the partition wall. To make the sewage easier to be separated and discharged, it is best to achieve regular sewage discharge through the valve at the outlet end of the sewage pipe.

Description of drawings

Fig. 1 is the cross-sectional view of the shrimp pond of the sewage collection and sewage discharge device for cultivating shrimp ponds of the present invention;

Fig. 2 is the top view of the shrimp pond of the sewage collection and sewage discharge device for cultivating shrimp ponds of the present invention;

Fig. 3 is the front view of the sewage discharger in the sewage collection and sewage discharge device of the cultured shrimp pond of the present invention;

Fig. 4 is the top view of the sewage discharger in the sewage collection and sewage discharge device of the cultured shrimp pond of the present invention;

Fig. 5 is a schematic diagram of the water partition wall of the sewage discharge device in the sewage collection and sewage discharge device for the cultured shrimp pond of the present invention.

Explanation of reference signs: 1 sewage device; 11 sewage outlet; 12 filter screen; 13 sewage pipe; 14 water partition wall; 141 water diversion block; 15 screen cover;

specific embodiment

Describe in further detail below in conjunction with embodiment and accompanying drawing:

Example 1:

As shown in Figures 1 to 5, the sewage collection and discharge device for aquaculture shrimp ponds includes the sewage discharger 1 provided at the bottom of the center of the shrimp pond 2 and the shrimp pond 2, the surface of the sewage discharger 1 is provided with a screen cover 15, and the bottom of the screen cover 15 is connected There is a filter screen 12, and the sewage discharger 1 is provided with a water partition wall 14, the bottom surface of the water partition wall 14 is connected with the bottom 21 of the shrimp pond, and the center of the water partition wall 14 is provided with a sewage outlet 11, and the sewage outlet 11 is connected with a sewage pipe 13. According to the hydrostatic pressure of the water body itself, the present invention completes the sewage entering the sewage outlet 11 from around the filter screen 12 through the screen cover 15. The screen cover 15 completely covers the filter screen 12 and is impermeable. 15 tops form a wedge-shaped hydrostatic pressure, making it easier for sewage to be sucked in the filter screen 12. Screening screen 12 is in order to protect the safety of shrimp on the one hand, can filter out large particle pollutant on the other hand and avoids sewage outlet 11 from clogging up. The height of the water surface line 3 of the shrimp pond is lower than that of the shrimp pond 2, and the sewage discharger 1 is set at the bottom of the center of the shrimp pond 2. The taper, gravity and the centrifugal effect of the internal circulation of the shrimp pond 2 can make the sediment flow to the pond along the bottom of the pond. The center gathers, and the effect of sewage collection and sewage discharge is achieved by opening the valve on the sewage pipe 13.

The screen cover 15 is conical, with a taper of 100-145°, and the screen cover 15 and the filter screen 12 are connected by threads or pipe clamps. In order to form a wedge-shaped hydrostatic pressure at the top of the screen cover 15, sewage is more easily sucked in the filter screen 12, and the screen cover 15 and the filter screen are not easy to separate or fall off, which can prevent shrimp from being absorbed into the sewage pipe 13.

The bottom 21 of the shrimp pond is conical, with a taper of 100-150°. Using the conicity, gravity and the centrifugal effect of the inner circulation of the shrimp pond, the sediment gathers along the bottom of the pond toward the center of the pond, achieving the effect of automatic sewage collection.

The filter screen 12 is a metal filter screen, and the mesh of the metal filter screen is 2 to 40 mesh. The metal filter screen adopted has a long service life, is economical and reliable, has good anti-corrosion performance and is safe and firm.

The water barrier 14 is composed of evenly distributed water diversion blocks 141, the angle between the water diversion blocks 141 is 20-50°, which can change the flow characteristics of sewage to enhance the circulation at the bottom of the pool and improve the hydrodynamic conditions.

The inner wall of the sewage pipe 13 is provided with an anti-corrosion coating, and the anti-corrosion coating includes the following components by weight ratio: Cr3C2-NiCr: Ni55: WC-Co: NiCrBSi: silver-based solder: TaC: NbC: C ₃₈ H ₇₆ N ₂ O ₂ =10 ~35: 0.5~1: 18~33: 26~41: 16~25: 11~17: 13~19: 0.7~1, which can effectively prevent the sewage pipe 13 from being corroded by sewage or worn out by some hard and small impurities during long-term use. In the case of damage, the strength of the inner wall of the sewage pipe 13 can also be enhanced, and the frequency of maintenance or replacement of the sewage pipe 13 can be reduced. The sewage pipe 13 is not easily blocked and can efficiently complete the sewage discharge work.

The outer wall of the shrimp pond 2 is rectangular, and the diameter of the sewage discharger 1 is 1/10~3/10 of the long side of the outer wall of the shrimp pond 2, which can effectively utilize the hydrostatic pressure of the water body itself to pass through the screen cover 15 to complete the sewage entering from the surroundings of the filter screen 12 The sewage outlet 11, and the water pressure will not cause damage to the sewage discharge device 1.

The sewage outlet 11 is conical, with a taper of 90~130°, which is beneficial for sewage to enter the sewage pipe 13, and the sewage is discharged faster. To achieve regular blowdown.

Example 2:

As shown in Figures 1 to 5, the sewage collection and discharge device for the cultured shrimp pond includes the sewage discharger 1 provided at the bottom of the shrimp pond 2 and the center of the shrimp pond 2. The bottom 21 of the shrimp pond is conical, and the taper is preferably 120°. 2. The outer wall is rectangular. The diameter of the sewage discharger 1 is preferably 2/10 of the long side of the outer wall of the shrimp pond 2. The surface of the sewage discharger 1 is provided with a screen cover 15, and the filter screen 12 is a metal filter. The mesh of the metal filter is preferably 10 mesh, the bottom of the screen cover 15 is connected with a filter screen 12, the screen cover 15 is conical, the taper is preferably 120 °, the screen cover 15 and the filter screen 12 are connected by thread or pipe clamps, and the sewage discharger 1 is equipped with Water barrier 14, water barrier 14 is made up of evenly distributed water diversion block 141, and the included angle between water diversion block 141 is preferably 45 °, and water barrier wall 14 bottom surfaces are connected with shrimp pond bottom 21, and water barrier wall 14 centers are provided with There is a sewage outlet 11, the sewage outlet 11 is conical, and the taper is 100°, and the sewage outlet 11 is connected with a sewage pipe 13.

The conventional techniques in the above connections are prior art known to those skilled in the art, and will not be described in detail here.

The taper of the screen cover 15 is not limited to 100-145°, but also includes 100°, 100.1°, 100.2°, 100.3°...144.98°, 144.99°, 145°.

The taper of shrimp pond bottom 21 is not only limited to 100～150 °, also should comprise 100 °, 100.1 °, 100.2 °, 100.3 °...149.98 °, 149.99 °, 150 °.

The included angle between the diversion blocks 141 is not limited to 20-50°, but also includes 20°, 20.1°, 20.2°, 20.3°...49.98°, 49.99°, 50°.

The taper of sewage outlet 11 is not limited to 90-130°, but also includes 90°, 90.1°, 90.2°, 90.3°, 90.4°...129.98°, 129.99°, 130°.

According to the hydrostatic pressure of the water body itself, the present invention completes the sewage entering the sewage outlet 11 from around the filter screen 12 through the screen cover 15. The screen cover 15 completely covers the filter screen 12 and is impermeable. 15 tops form a wedge-shaped hydrostatic pressure, making it easier for sewage to be sucked in the filter screen 12. On the one hand, the filter screen 12 is in order to protect the safety of the shrimp, and on the other hand, it can filter out large particles of pollutants to avoid the blockage of the sewage outlet 11, and can effectively concentrate the sediment at the bottom of the pond for centralized treatment. These sediments are the residual bait for feeding And the metabolites of prawns can be used as organic fertilizers for crops to improve the utilization value of the sediment. The sewage discharger 1 is arranged at the bottom of the center of the shrimp pond 2 and can use the taper and gravity and the centrifugation of the inner circulation of the shrimp pond 2 to make the sediment flow along. Gather toward the center of the pool at the bottom of the pool. In actual work, the sewage is discharged by opening the valve on the sewage pipe 13, and the valve opening time can be set according to the required sewage discharge.

The inner wall of the sewage pipe 13 is provided with an anti-corrosion coating, and the anti-corrosion coating includes the following preferred weight ratio components: Cr3C2-NiCr: Ni55: WC-Co: NiCrBSi: silver-based solder: TaC: NbC: C ₃₈ H ₇₆ N ₂ O ₂ = 20: 0.6: 22: 33: 21: 16: 17: 0.8, which can effectively prevent the sewage pipe 13 from being corroded by sewage or damaged by some hard and small impurities during long-term use, and can also strengthen the strength of the inner wall of the sewage pipe 13, reducing the The maintenance or replacement frequency of the sewage pipe 13 is small, the sewage pipe 13 is not easy to be blocked, and the sewage discharge work can be efficiently completed.

The embodiments described above have described the technical solutions of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention, and are not intended to limit the present invention. All done within the principle scope of the present invention Any modification, supplement or substitution in a similar manner shall be included within the protection scope of the present invention.

Claims (8)

1. shrimp ponds dirt collection blowdown apparatus, including shrimp ponds are cultivated（2）And shrimp ponds（2）The excretion machine that centre bottom is provided with（1）, its feature It is：The excretion machine（1）Surface is provided with screen cloth lid（15）, the screen cloth lid（15）Bottom is connected with screen pack（12）, it is described Excretion machine（1）Inside it is provided with core wall（14）, the core wall（14）Bottom surface and shrimp ponds bottom of pond（21）Connection, the core wall（14） Center is provided with sewage draining exit（11）, the sewage draining exit（11）It is connected with blow-off pipe（13）.

It is 2. according to claim 1 to cultivate shrimp ponds dirt collection blowdown apparatus, it is characterised in that：The screen cloth lid (15) is circular cone Shape, taper is 100 ~ 145 °, and screen cloth lid (15) is connected with screen pack (12) using threaded connection or pipe collar.

It is 3. according to claim 1 to cultivate shrimp ponds dirt collection blowdown apparatus, it is characterised in that：The shrimp ponds bottom of pond（21）It is circle Taper, taper is 100 ~ 150 °.

It is 4. according to claim 1 to cultivate shrimp ponds dirt collection blowdown apparatus, it is characterised in that：The screen pack（12）It is metal Screen pack, the mesh of the metal filter screen is 2 ~ 40 mesh.

It is 5. according to claim 1 to cultivate shrimp ponds dirt collection blowdown apparatus, it is characterised in that：The core wall（14）By uniform Diversion block（141）Composition, the diversion block（141）Between angle be 20 ~ 50 °.

It is 6. according to claim 1 to cultivate shrimp ponds dirt collection blowdown apparatus, it is characterised in that：The blow-off pipe（13）Inwall sets There is wear-resistant coating, the wear-resistant coating compares composition including following weight：Cr3C2-NiCr ：Ni55 ：WC-Co：NiCrBSi：Silver Base solder：TaC：NbC：C₃₈H₇₆N₂O₂=10~35：0.5~1：18~33：26~41：16~25：11~17：13~19：0.7~1.

It is 7. according to claim 1 to cultivate shrimp ponds dirt collection blowdown apparatus, it is characterised in that：The shrimp ponds（2）Outer wall is square Shape, the excretion machine（1）A diameter of shrimp ponds（2）The 1/10 ~ 3/10 of outer wall side long.

It is 8. according to claim 1 to cultivate shrimp ponds dirt collection blowdown apparatus, it is characterised in that：The sewage draining exit（11）It is cone Shape, taper is 90 ~ 130 °, the sewage draining exit（11）With blow-off pipe（13）Junction is arc, the blow-off pipe（13）The port of export It is provided with valve.