A ship environmental protection auxiliary fish driving device

Abstract

The present invention relates to a ship environmental protection auxiliary fish driving device, wherein an air pump is connected to ship exhaust gas and sent to a gas dryer, the gas dryer is connected to a gas filter and then sent to a compressor, the gas filter is also connected to an automatic exhaust valve through a one-way valve and a switch valve, the compressor is connected to a gas tank, the gas tank is connected to a pressure reducing valve through a switch valve, the pressure reducing valve is divided into two paths, one is connected to the automatic exhaust valve through a switch valve, and the other is connected to a ventilation pipeline axially arranged in a propeller, the ventilation pipeline is externally connected to the propeller and a coaxially rotating gas distribution head is arranged, the gas distribution head is a hood-shaped structure with air holes provided on the circumferential side wall. The device can effectively use ship exhaust gas to drive away fish schools near the propeller.

Description

Technical Field

[0001] The invention relates to a fish driving device, in particular to an environmentally friendly auxiliary fish driving device for ships. Background Art

[0002] The propeller blades of a ship are usually composed of 4-8 large annular blades. The power generated by the rotation of the propeller can easily harm the fish in the ocean and release a large amount of blood, which will attract more fish and cause serious damage to marine resources. Summary of the invention

[0003] The invention provides a ship environmental protection auxiliary fish driving device which can effectively utilize ship exhaust gas to drive away fish schools near a propeller.

[0004] The technical scheme adopted by the present invention is: a ship environmental protection auxiliary fish driving device, characterized in that it comprises an air pump, a gas dryer, a gas filter, a compressor, a switch valve, an automatic exhaust valve, a gas tank, a pressure reducing valve, and a gas distribution head. The air pump is connected to the ship exhaust gas and sent to the gas dryer. The gas dryer is connected to the gas filter and then sent to the compressor. The gas filter is also connected to the automatic exhaust valve through a one-way valve and a switch valve. The compressor is connected to the gas tank. The gas tank is connected to the pressure reducing valve through the switch valve. The pressure reducing valve is divided into two paths. One path is connected to the automatic exhaust valve through the switch valve, and the other path is connected to a ventilation pipeline axially arranged in a propeller. The ventilation pipeline is externally connected to the propeller and a coaxially rotating gas distribution head is arranged. The gas distribution head is a hood-shaped structure with air holes opened on the circumferential side wall.

[0005] Furthermore, the gas tank is provided with a pressure detection gauge.

[0006] Furthermore, the hood-shaped inner wall of the gas distribution head is a threaded structure.

[0007] Furthermore, the inner wall of the outer end of the hood-like structure of the gas distribution head is provided with a pointed cone structure facing the ventilation pipeline.

[0008] Furthermore, another path branched off from the pressure reducing valve is also connected to a pressure boosting gas tank via a switch valve.

[0009] Furthermore, the pressure-boosting gas tank is connected to the compressor via a switch valve.

[0010] The present invention uses a vacuum pump to send the exhaust gas at the tail of the ship into a gas dryer and a gas filter for drying and filtering in sequence. The nitrogen dioxide gas obtained by filtering is compressed by a compressor and stored in a gas tank. Other exhaust gases are directly discharged through a switch valve and an automatic exhaust valve. When it is necessary to drive fish, the gas tank is sent to a ventilation pipeline through a switch valve and a pressure reducing valve, and then spirally distributed outwards through a gas distribution head as the propeller rotates. The released gas is discharged from the air holes to evacuate the fish school and drive the fish. When it is not necessary to drive fish, the gas tank is sent to the automatic exhaust valve for discharge through a switch valve and a pressure reducing valve. The threaded structure on the inner wall of the gas distribution head facilitates increasing the outward discharge speed. Combined with the built-in pointed cone structure, the exhaust gas can be effectively evenly distributed toward the air holes on the circumference of the gas distribution head to ensure stable exhaust. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the present invention;

[0012] Figure 2 It is a schematic diagram of the three-dimensional structure of the gas distribution head.

[0013] In the figure: controller 1, vacuum pump 2, gas dryer 3, gas filter 4, one-way valve 5, first automatic exhaust valve 6, compressor 7, gas tank 8, pressure detection gauge 9, switch valve 10, pressure reducing valve 11, second automatic exhaust valve 12, pressure-compensating gas tank 13, ventilation pipe 14, gas distribution head 15, threaded structure 16, air hole 17, and pointed cone structure 18. DETAILED DESCRIPTION

[0014] The following is a further description with reference to the accompanying drawings.

[0015] Figure 1 , 2 As shown: a ship environmental protection auxiliary fish driving device, including a controller 1, an air pump 2, a gas dryer 3, a gas filter 4, a one-way valve 5, a first automatic exhaust valve 6, a compressor 7, a gas tank 8, a pressure detection gauge 9, a switch valve 10, a pressure reducing valve 11, a second automatic exhaust valve 12, a pressure-compensating gas tank 13, a ventilation pipe 14, and a gas distribution head 15. The exhaust pump 2 is connected to the ship exhaust gas and sent to the gas dryer 3. The gas dryer 3 is connected to the gas filter 4. The gas filter is divided into two paths. One path is connected to the first automatic exhaust valve 6 through a one-way valve 5 and a switch valve, and the other path is sent to the compressor 7 through a one-way valve. The compressor 7 is connected to the gas tank 8. The gas tank is provided with a pressure detection gauge 9. The gas tank 8 is connected to the pressure reducing valve 11 through a switch valve 10. The pressure reducing valve 11 is divided into two paths. One path is connected to the second automatic exhaust valve 12 through a switch valve, and the other path is connected to the ventilation pipeline 14 axially arranged in the propeller. The ventilation pipeline 14 is connected to the propeller and a coaxially rotating gas distribution head 15 is arranged. The gas distribution head is a hood-shaped structure with air holes 17 on the circumferential side wall. The hood-shaped inner wall of the gas distribution head is a threaded structure 16; the inner wall of the outer end of the hood-shaped structure of the gas distribution head is provided with a pointed cone structure 18 facing the ventilation pipeline. In this embodiment, each valve, compressor, and pump are controlled by a controller 1.

[0016] In order to further improve the exhaust stability, a booster gas tank 13 is connected to the other path branched off from the pressure reducing valve through a switch valve, which is used when the gas supply pressure of the supplementary gas tank is insufficient; the booster gas tank can also be connected to a compressor through a switch valve and used as a backup gas tank or to inflate the booster gas tank.

Claims

1. A ship environmental protection auxiliary fish driving device, Features: It includes an exhaust pump, a gas dryer, a gas filter, a compressor, a switch valve, an automatic exhaust valve, a gas tank, a pressure reducing valve, and a gas distribution head. The exhaust pump is connected to the ship's exhaust gas and sent to the gas dryer. The gas dryer is connected to the gas filter and then sent to the compressor. The gas filter is also connected to the automatic exhaust valve via a one-way valve and a switch valve. The compressor is connected to the gas tank, and the gas tank is connected to the pressure reducing valve via the switch valve. The pressure reducing valve is divided into two paths, one of which is connected to the automatic exhaust valve via the switch valve, and the other is connected to the ventilation pipeline axially arranged in the propeller. The ventilation pipeline is externally connected to the propeller and a coaxially rotating gas distribution head is arranged. The gas distribution head is a hood-like structure with air holes opened on the circumferential side wall.

2. A ship environmental protection auxiliary fish repelling device according to claim 1, Its characteristics are: The gas tank is provided with a pressure detection gauge.

3. A ship environmental protection auxiliary fish repelling device according to claim 1, Its characteristics are: The hood-shaped inner wall of the gas dispensing head is a threaded structure.

4. A ship environmental protection auxiliary fish repelling device according to claim 1, Its characteristics are: The inner wall of the outer end of the hood-shaped structure of the gas distribution head is provided with a pointed cone structure facing the ventilation pipeline.

5. A ship environmental protection auxiliary fish repelling device according to claim 1, Its characteristics are: The other path branched off from the pressure reducing valve is also connected to a pressure boosting gas tank via a switch valve.

6. A ship environmental protection auxiliary fish repelling device according to claim 5, Its characteristics are: The pressure-compensating gas tank is connected to the compressor via a switch valve.

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