Quantitative feed scattering device for water catamaran

Abstract

The invention discloses a feed quantitative scattering device for an overwater catamaran, and belongs to the technical field of aquaculture. Comprising a supporting base, a pair of supporting rods are installed on the top face of the supporting base, a collecting hopper is installed between the supporting rods, a collecting cavity is formed in the top face of the collecting hopper, a discharging frame is installed on the bottom face of the collecting hopper, a buffering cavity is formed in the top face of the discharging frame, an arc-shaped cavity is formed in the bottom face of the discharging frame, and the collecting cavity, the buffering cavity and the arc-shaped cavity are communicated. An arc-shaped cavity is formed in the supporting seat, a discharging disc is rotationally connected into the arc-shaped cavity, four sets of material collecting cavities are formed in the side face of the discharging disc at equal intervals, the side face of the discharging disc is attached to the side face of the arc-shaped cavity, a driving part is installed on the top face of the supporting seat and drives the discharging disc to rotate by 90 degrees regularly, and a throwing mechanism is further installed on the top face of the supporting seat. The throwing mechanism receives the feed conveyed by the discharging disc and throws the feed to the water surface; the quantitative feed throwing device applied to the water catamaran can achieve the purpose of throwing feed quantitatively.

Description

Technical Field

[0001] The present invention relates to the technical field of aquaculture, and particularly to a feed quantitative throwing device for a water catamaran. Background Art

[0002] A water catamaran is a ship with a special structure, which is composed of two parallel single-hull ships combined through a connecting structure. Water catamarans are widely used in the field of aquaculture and are important tools for modern large-scale aquaculture operations. Therefore, they are usually equipped with feed throwing devices.

[0003] Under the background of the booming development of the modern aquaculture industry, the aquaculture scale is constantly expanding, and the requirements for the efficiency and precision of aquaculture equipment are also increasing day by day. With its unique advantages, the water catamaran has gradually become an important platform for aquaculture operations, and the research and application of a feed quantitative throwing device adapted to it have become a key link in promoting the progress of the aquaculture industry.

[0004] In recent years, with the continuous increase in the global demand for aquatic products, aquaculture has developed rapidly towards large-scale and intensive directions. The traditional manual feeding method in small-scale aquaculture models is no longer able to meet the large-scale aquaculture scenarios. In large-scale aquaculture, the number of cultured organisms is huge, and the demand for feed varies significantly at different growth stages. If the feeding amount is insufficient, it will affect the growth and development of cultured organisms and reduce the yield; if the feeding amount is excessive, it will cause feed waste, increase the aquaculture cost, and may also lead to water quality deterioration, diseases, and threaten the survival of cultured organisms. Therefore, accurately controlling the feed feeding amount and achieving scientific feeding have become the key to ensuring aquaculture benefits and sustainable development, which urgently requires advanced feed quantitative throwing technologies and equipment. Summary of the Invention

[0005] The purpose of the present invention is to provide a feed quantitative throwing device for a water catamaran to solve the problems raised in the above background art.

[0006] In view of the above problems, the technical solution proposed by the present invention is:

[0007] A feed quantitative throwing device for a water catamaran, comprising a support base. A pair of support rods are installed on the top surface of the support base. An aggregate hopper is installed between the pair of support rods. The top surface of the aggregate hopper has an aggregate cavity. A blanking frame is installed on the bottom surface of the aggregate hopper. The top surface of the blanking frame has a buffer cavity. The bottom surface of the blanking frame has an arc cavity. The aggregate cavity, the buffer cavity and the arc cavity are communicated. A blanking disc is rotatably connected inside the arc cavity. Four groups of material receiving cavities are equidistantly arranged on the side surface of the blanking disc. The side surface of the blanking disc is in contact with the side surface of the arc cavity. A driving member is installed on the top surface of the support base. The driving member drives the blanking disc to rotate 90 degrees regularly. A throwing mechanism is also installed on the top surface of the support base. The throwing mechanism receives the feed transported by the blanking disc and throws the feed onto the water surface. By setting the aggregate hopper, the blanking frame, the blanking disc, the driving member and the throwing mechanism, the quantitative collection and throwing of the feed are realized, the feed amount thrown each time can be accurately controlled, feed waste is avoided, the breeding cost is reduced, and at the same time, the water quality deterioration caused by excessive feeding is prevented, which is beneficial to the healthy growth of breeding organisms.

[0008] As a preferred technical solution of the present invention, the driving member includes a power box installed on the top surface of the support base. The power box outputs power. A rotating shaft is coaxially connected between the blanking disc and the arc cavity. One end of the rotating shaft is located outside the blanking frame and is coaxially connected with a gear. The output end of the power box is connected with a half gear. The gear and the half gear are meshed and connected. By using the meshing of the half gear and the gear, the rotation angle and frequency of the blanking disc are accurately controlled, and further the quantitative feeding of the feed is accurately controlled, ensuring the accuracy and stability of the throwing amount.

[0009] As a preferred technical solution of the present invention, the transmission ratios of the gear, the blanking disc and the half gear are 1:1:1, and the half gear is a quarter gear, so that the rotation angle of the blanking disc is fixed at 90 degrees each time, ensuring that the feed amount collected by each material receiving cavity is the same, further improving the accuracy of feed quantification and being beneficial to realizing scientific feeding.

[0010] As a preferred technical solution of the present invention, a motor and a reducer are installed inside the power box. The output end of the motor is in transmission connection with the input end of the reducer. The output end of the power box is the output end of the reducer. And the outside of the power box has heat dissipation holes. The cooperation of the motor and the reducer can adjust the output speed according to actual needs to meet the requirements of the feed throwing frequency in different breeding scenarios; the heat dissipation holes can effectively reduce the internal temperature of the power box, ensure the stable operation of the motor and the reducer, and extend the service life of the equipment.

[0011] As a preferred technical solution of the present invention, a protection frame is further installed on the top surface of the support base. The gear and the semi-gear are both located within the protection frame. The protection frame can prevent external debris from entering the meshing area of the gear and the semi-gear, avoiding transmission failures caused by foreign object interference, and at the same time can protect the safety of operators and reduce the occurrence of accidents.

[0012] As a preferred technical solution of the present invention, the bottom opening of the aggregate chamber and the top opening of the buffer chamber have the same size. A vibration motor is installed on the outer side of the aggregate hopper. The openings of the same size facilitate the smooth falling of the feed and reduce blockage. The vibration motor can cause the aggregate hopper to vibrate, promoting the flow of the feed, further avoiding feed caking and blockage, and ensuring the stable supply of the feed and the accuracy of quantitative collection.

[0013] As a preferred technical solution of the present invention, the spreading mechanism includes a downwardly inclined first conveying pipe and an upwardly inclined second conveying pipe. The connection between the first conveying pipe and the second conveying pipe is arc-shaped. A pair of fixing rods are connected between the first conveying pipe and the feeding frame. A cavity is formed on the top surface of the first conveying pipe, and a part of the feeding tray is located within the cavity, facilitating the reception of the feed transported by the feeding tray, and using the inclined angle and arc-shaped connection of the pipeline to enable the feed to flow naturally under the action of gravity, realizing stable transportation and providing guarantee for subsequent spreading.

[0014] As a preferred technical solution of the present invention, the spreading mechanism further includes an air delivery cover installed on the outer side of the first conveying pipe. A pair of air delivery heads are installed on the inner wall of the air delivery cover. An air cavity is formed inside the air delivery cover. An air outlet is formed on the side surface of the air delivery head, and the air cavity is communicated with the air outlet. The air outlet faces the connection between the first conveying pipe and the second conveying pipe. An air pump is installed on the top surface of the support base. A trachea is connected between the output end of the air pump and the air delivery cover. The air pump, the air delivery cover, and the air delivery heads work together to form an air flow at the connection between the first conveying pipe and the second conveying pipe, accelerating the flow of the feed, preventing the feed from blocking at the connection, and at the same time can spread the feed farther and more evenly, improving the spreading effect of the feed. As a preferred technical solution of the present invention, the support base is installed on the deck of the catamaran and is close to the stern of the catamaran. The free end of the second conveying pipe is located above the water surface. The free end of the second conveying pipe being located above the water surface can ensure that the feed directly falls into the aquaculture area, avoiding waste caused by the feed being spread to other areas, improving the utilization efficiency of the feed. As the catamaran moves forward, since the device is installed at the stern, the feed can be spread on the water surface behind the hull.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The feed quantitative throwing device for the water catamaran can accurately control the amount of feed thrown each time through the coordinated operation of the aggregate hopper, the blanking frame, the blanking plate and the driving member. The four material receiving cavities of the blanking plate quantitatively collect feed during rotation, and the throwing amount each time is stable and the same, avoiding the problems of insufficient or excessive feeding that are prone to occur in manual feeding. This not only reduces feed waste and breeding costs, but also prevents water quality deterioration caused by excessive feed, indirectly reducing the water quality treatment cost, improving the feed utilization rate, ensuring that the cultured organisms can grow under suitable nutritional conditions, and enhancing the breeding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. 1 is a first three-dimensional structure diagram of the feed quantitative throwing device for the water catamaran disclosed in the embodiment of the present invention;

[0017] Figure 2 FIG. 2 is a second three-dimensional structure diagram of the feed quantitative throwing device for the water catamaran disclosed in the embodiment of the present invention;

[0018] Figure 3 FIG. 3 is a partial cross-sectional view of the second three-dimensional structure of the feed quantitative throwing device for the water catamaran disclosed in the embodiment of the present invention;

[0019] Figure 4 FIG. 4 is a three-dimensional structure diagram of the throwing mechanism of the feed quantitative throwing device for the water catamaran disclosed in the embodiment of the present invention;

[0020] Figure 5 FIG. 5 is a cross-sectional structure diagram of the feed quantitative throwing device for the water catamaran disclosed in the embodiment of the present invention;

[0021] Figure 6 FIG. 6 is a three-dimensional diagram of the cross-sectional structure of the feed quantitative throwing device for the water catamaran disclosed in the embodiment of the present invention;

[0022] Figure 7 FIG. 7 is Figure 6 an enlarged structure diagram of the structure of A in FIG. 6.

[0023] In the figure: 1, aggregate hopper; 2, aggregate cavity; 3, vibration motor; 4, support seat; 5, support rod; 6, blanking frame; 7, fixed rod; 8, second conveying pipe; 9, air pump; 10, air conveying cover; 11, air pipe; 12, protection frame; 13, power box; 14, rotating shaft; 15, gear; 16, semi-gear; 17, first conveying pipe; 18, cavity; 19, air conveying head; 20, buffer cavity; 21, arc cavity; 22, blanking plate; 23, material receiving cavity; 24, air cavity; 25, air outlet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1 - Figure 7 The present invention provides a technical solution: a feed quantitative throwing device for a catamaran on water, comprising a support seat 4, a pair of support rods 5 are installed on the top surface of the support seat 4, a collecting hopper 1 is installed between the pair of support rods 5, the top surface of the collecting hopper 1 has a collecting cavity 2, a feeding frame 6 is installed on the bottom surface of the collecting hopper 1, the top surface of the feeding frame 6 has a buffer cavity 20, the bottom surface of the feeding frame 6 has an arc cavity 21, the collecting cavity 2, the buffer cavity 20, and the arc cavity 21 are connected, and the internal rotation of the arc cavity 21 It is dynamically connected with a feed tray 22, and four groups of receiving chambers 23 are equidistantly provided on the side of the feed tray 22. The side of the feed tray 22 fits the side of the arc-shaped chamber 21. A driving member is installed on the top surface of the support seat 4, and the driving member drives the feed tray 22 to rotate 90 degrees regularly. A scattering mechanism is also installed on the top surface of the support seat 4. The scattering mechanism receives the feed transported by the feed tray 22 and scatters the feed onto the water surface. The feed is first stored in the collecting chamber 2, and enters the arc-shaped chamber 21 through the collecting chamber 2 and the buffer chamber 20. The driving member drives the feed tray 22 to rotate 90 degrees regularly. When the receiving chamber 23 rotates to be connected with the buffer chamber 20, the feed falls into and fills the receiving chamber 23, thereby realizing quantitative collection. As the feed tray 22 continues to rotate, the side of the feed tray 22 fits with the side of the arc-shaped chamber 21, so the excess feed will remain in the buffer chamber 20. The feed tray 22 continues to rotate, and the receiving chamber 23 turns to a position where it is connected with the scattering mechanism. The feed in the receiving chamber 23 is sent to the scattering mechanism and finally scattered onto the water surface. At the same time, the amount of feed scattered each time is the amount to fill the receiving chamber 23. Therefore, the amount of feed scattered each time is the same. As the catamaran travels, the purpose of scattering the same amount of feed at every certain distance can be achieved.

[0026] As an embodiment of the present invention, further, the driving member includes a power box 13 installed on the top surface of the support base 4. The power box 13 outputs power. A rotating shaft 14 is coaxially connected between the blanking disc 22 and the arc-shaped cavity 21. One end of the rotating shaft 14 is located outside the blanking frame 6 and is coaxially connected with a gear 15. The output end of the power box 13 is connected with a half gear 16. The gear 15 and the half gear 16 are meshed and connected. The transmission ratios of the gear 15, the blanking disc 22, and the half gear 16 are 1:1:1, and the half gear 16 is a quarter gear. An electric motor and a speed reducer are installed inside the power box 13. The output end of the electric motor is in transmission connection with the input end of the speed reducer. The output end of the power box 13 is the output end of the speed reducer, and the outside of the power box 13 has heat dissipation holes. When the electric motor in the power box 13 starts, it outputs power after speed regulation by the speed reducer. Due to the transmission ratio of 1:1:1, every time the half gear 16 rotates one week, the gear 15 drives the blanking disc 22 to rotate 90 degrees, so as to achieve the purpose that the blanking disc 22 stops rotating for a period of time every time it rotates 90 degrees. While the blanking disc 22 stops rotating, the feed can fill the receiving cavity 23, and the feed in the receiving cavity 23 is scattered onto the water surface.

[0027] As an embodiment of the present invention, further, a protection frame 12 is also installed on the top surface of the support base 4. The gear 15 and the half gear 16 are both located inside the protection frame 12. The protection frame 12 forms a physical barrier to prevent dust, water droplets, breeding sundries, etc. from entering, so that the gear 15 and the half gear 16 work in a relatively enclosed and clean environment, ensuring the normal operation of the transmission system.

[0028] As an embodiment of the present invention, further, the bottom opening size of the aggregate cavity 2 is the same as the top opening size of the buffer cavity 20. A vibration motor 3 is installed outside the aggregate hopper 1. The feed falls from the aggregate cavity 2 into the buffer cavity 20 by gravity. The same-sized openings provide an unobstructed passage. When the vibration motor 3 works, it causes the aggregate hopper 1 to generate high-frequency vibration, destroys the friction force and caking structure between the feeds, and promotes the smooth sliding of the feeds.

[0029] As an embodiment of the present invention, further, the spreading mechanism includes a first conveying pipe 17 inclined downward and a second conveying pipe 8 inclined upward. The connection between the first conveying pipe 17 and the second conveying pipe 8 is arc-shaped. A pair of fixing rods 7 are connected between the first conveying pipe 17 and the feeding frame 6. A cavity 18 is formed on the top surface of the first conveying pipe 17. Part of the feeding tray 22 is located in the cavity 18. As the feeding tray 22 rotates, the feed in the receiving cavity 23 will be poured into the cavity 18 on the top surface of the first conveying pipe 17. After the receiving cavity 23 rotates to the vertical state, the previous receiving cavity 23 is still in the arc-shaped cavity 21, and the feed therein is pressed by the side surface of the arc-shaped cavity 21, so it cannot fall out of the arc-shaped cavity 21, ensuring that the amount of feed spread each time is the capacity of the receiving cavity 23. The feed slides down along the downward-inclined first conveying pipe 17 under the action of gravity and stays at the arc-shaped connection.

[0030] As an embodiment of the present invention, further, the spreading mechanism further includes an air delivery cover 10 installed outside the first conveying pipe 17. A pair of air delivery heads 19 are installed on the inner wall of the air delivery cover 10. An air cavity 24 is formed inside the air delivery cover 10. An air outlet 25 is formed on the side surface of the air delivery head 19, and the air cavity 24 is communicated with the air outlet 25. The air outlet 25 faces the connection between the first conveying pipe 17 and the second conveying pipe 8. An air pump 9 is installed on the top surface of the support base 4. A trachea 11 is connected between the output end of the air pump 9 and the air delivery cover 10. When the air pump 9 is started, air is conveyed into the air cavity 24 of the air delivery cover 10 through the trachea 11, and the air sprays out from the air outlet 25 of the air delivery head 19, forming a high-speed air flow at the connection between the first conveying pipe 17 and the second conveying pipe 8, pushing the feed to quickly pass through the connection and giving the feed a certain initial velocity during spreading, making its spreading range wider and distribution more uniform. As an embodiment of the present invention, further, the support base 4 is installed on the deck of the catamaran and close to the stern of the catamaran. The free end of the second conveying pipe 8 is located above the water surface. When the catamaran sails to the aquaculture area, the spreading device is started, and the feed sprays out from the second conveying pipe 8 and directly enters the aquaculture water area to complete the feed spreading operation.

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figure 1 - Figure 7 ,the present invention provides a technical solution: a feed quantitative spreading device for an aquatic catamaran, including the following steps:

[0033] As an embodiment of the present invention, further, select a water catamaran for freshwater fish pond farming, and install a support base 4 of the feed metering and spreading device at a position near the stern on the deck of the catamaran. Install the aggregate hopper 1 on the support base 4 through a pair of support rods 5 to ensure the stability of the aggregate hopper 1. Install a vibration motor 3 on the outside of the aggregate hopper 1 and connect the power supply. Install the blanking frame 6 at the bottom of the aggregate hopper 1 to connect the aggregate chamber 2, the buffer chamber 20 and the arc chamber 21. Rotationally connect the blanking plate 22 in the arc chamber 21 to ensure its flexible rotation. Install the driving member, fix the power box 13 on the top surface of the support base 4, so that the rotating shaft 14, the gear 15 and the half gear 16 are correctly meshed and are all located within the protection frame 12, and connect the power supply to the power box 13. Assemble the spreading mechanism, connect the first conveying pipe 17 to the blanking frame 6 through the fixing rod 7 to ensure that the cavity 18 on the top surface of the first conveying pipe 17 corresponds to a partial position of the blanking plate 22, install the second conveying pipe 8, and make it arc-connected to the first conveying pipe 17, and the free end of the second conveying pipe 8 is located above the water surface. Install an air conveying hood 10 on the outside of the first conveying pipe 17, connect the air pipe 11 of the air pump 9 to the air conveying hood 10, and connect the power supply to the air pump 9. As an embodiment of the present invention, further, before starting feeding, according to the variety, size and quantity of the cultured fish, as well as the feed requirements at the current growth stage, set a suitable feed spreading frequency by adjusting the parameters of the reducer in the power box 13. Pour the feed into the aggregate chamber 2, and start the vibration motor 3 to help the feed quickly and smoothly pass through the aggregate chamber 2 and fall into the buffer chamber 20, and then enter the arc chamber 21. Start the motor in the power box 13, drive the half gear 16 to rotate after speed regulation by the reducer, the half gear 16 meshes with the gear 15, so that the blanking plate 22 stops for a period of time every time it rotates 90 degrees. When the receiving chamber 23 rotates to communicate with the buffer chamber 20, the feed falls into the receiving chamber 23 and fills it up. As the blanking plate 22 continues to rotate, the excess feed remains in the buffer chamber 20. When the receiving chamber 23 rotates to the position where it is docked with the cavity 18 on the top surface of the first conveying pipe 17, the feed will pour into the cavity 18 under the action of gravity and slide down along the first conveying pipe 17 to the arc connection at the gravity. At this time, start the air pump 9, the air enters the air cavity 24 of the air conveying hood 10 through the air pipe 11, and then sprays out from the air outlet 25 of the air conveying head 19, forming a high-speed air flow at the connection of the first conveying pipe 17 and the second conveying pipe 8, pushing the feed through the second conveying pipe 8 and evenly spreading it on the water surface of the fish pond. As the catamaran slowly travels in the fish pond, the feed is continuously and quantitatively spread to cover the breeding area.

Claims

1. A feed quantitative spreading device for a catamaran, characterized in that: The invention comprises a support seat (4), a pair of support rods (5) are installed on the top surface of the support seat (4), a collecting hopper (1) is installed between the pair of support rods (5), the top surface of the collecting hopper (1) has a collecting cavity (2), the bottom surface of the collecting hopper (1) is installed with a material discharge frame (6), the top surface of the material discharge frame (6) has a buffer cavity (20), the bottom surface of the material discharge frame (6) has an arc cavity (21), the collecting cavity (2), the buffer cavity (20) and the arc cavity (21) are connected, and the arc cavity (2 1) is rotatably connected to a feed tray (22) inside, and four groups of receiving cavities (23) are equidistantly provided on the side of the feed tray (22), and the side of the feed tray (22) is in contact with the side of the arc-shaped cavity (21), and a driving member is installed on the top surface of the support seat (4), and the driving member drives the feed tray (22) to rotate 90 degrees regularly, and a scattering mechanism is also installed on the top surface of the support seat (4), and the scattering mechanism receives the feed transported by the feed tray (22) and scatters the feed onto the water surface.

2. A feed quantitative spreading device for a water catamaran according to claim 1, characterized in that: The driving member comprises a power box (13) mounted on the top surface of the support seat (4), the power box (13) outputs power, a rotating shaft (14) is coaxially connected between the unloading plate (22) and the arc-shaped cavity (21), one end of the rotating shaft (14) is located outside the unloading frame (6), and is coaxially connected to a gear (15), the output end of the power box (13) is connected to a half gear (16), and the gear (15) and the half gear (16) are meshingly connected.

3. A feed quantitative spreading device for a water catamaran according to claim 2, characterized in that: The transmission ratio of the gear (15), the unloading plate (22) and the half gear (16) is 1:1:1, and the half gear (16) is a quarter gear.

4. A feed quantitative spreading device for a water catamaran according to claim 2, characterized in that: A motor and a reducer are installed inside the power box (13); the output end of the motor is transmission-connected to the input end of the reducer; the output end of the power box (13) is the output end of the reducer; and the outer side of the power box (13) has heat dissipation holes.

5. The feed quantitative spreading device for a water catamaran according to claim 2, characterized in that: A protective frame (12) is also installed on the top surface of the support seat (4), and the gear (15) and the half gear (16) are both located in the protective frame (12).

6. A feed quantitative spreading device for a water catamaran according to claim 1, characterized in that: The bottom opening of the material collecting chamber (2) and the top opening of the buffer chamber (20) are of the same size, and a vibration motor (3) is installed on the outside of the material collecting hopper (1).

7. The feed quantitative spreading device for a water catamaran according to claim 1, characterized in that: The scattering mechanism comprises a first conveying pipe (17) inclined downward and a second conveying pipe (8) inclined upward, the connection between the first conveying pipe (17) and the second conveying pipe (8) is arc-shaped, a pair of fixing rods (7) are connected between the first conveying pipe (17) and the material discharge frame (6), a cavity (18) is provided on the top surface of the first conveying pipe (17), and a part of the position of the material discharge tray (22) is located in the cavity (18).

8. A feed quantitative spreading device for a water catamaran according to claim 7, characterized in that: The scattering mechanism further comprises an air delivery hood (10) installed on the outside of the first delivery pipe (17), a pair of air delivery heads (19) are installed on the inner wall of the air delivery hood (10), an air cavity (24) is provided inside the air delivery hood (10), an air outlet (25) is provided on the side of the air delivery head (19), and the air cavity (24) and the air outlet (25) are communicated, and the air outlet (25) faces the connection between the first delivery pipe (17) and the second delivery pipe (8), an air pump (9) is installed on the top surface of the support seat (4), and an air pipe (11) is connected between the output end of the air pump (9) and the air delivery hood (10).

9. A feed quantitative spreading device for a water catamaran according to claim 7, characterized in that: The support seat (4) is installed on the deck of the catamaran and close to the stern of the catamaran, and the free end of the second delivery pipe (8) is located above the water surface.

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