Oyster harvesting device and ship

Abstract

The utility model discloses an oyster harvesting device and a ship, and relates to the technical field of oyster harvesting equipment, the oyster harvesting device comprises a stripping structure and a traction assembly; the stripping structure is provided with a traction channel and a blade assembly arranged around the traction channel. The movable end of the traction assembly penetrates through the traction channel and is used for being connected with an oyster row. The traction assembly is used for pulling the oyster row to move in the direction close to the blade assembly, so that the fresh oysters on the oyster row are blocked by the blade assembly to be separated from the oyster row. According to the technical scheme that the traction assembly is matched with the peeling structure, the movable end of the traction assembly is used for pulling the oyster row to move in the direction close to the blade assembly, so that the fresh oysters on the oyster row are blocked by the blade assembly and are separated from the oyster row. The most easily damaged part of the existing fresh oyster harvesting equipment is a movable stripping structure, and the stripping structure and the blade assembly are static parts, so that the fresh oyster harvesting equipment does not need to move and is not easily damaged, and the reliability of the fresh oyster harvesting equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oyster harvesting equipment, and particularly relates to an oyster harvesting device and a ship. Background Art

[0002] Oysters, also known as sea oysters and scientifically named ostrea, are mollusks of the genus Ostrea in the family Ostreidae of the order Ostreoida. They are widely cultivated because of their plump, tender, fresh and fragrant meat and rich nutrition.

[0003] Traditional manual harvesting of oysters requires a large amount of manpower and time, consuming a large amount of labor costs, with low harvesting efficiency and high harvesting intensity. To solve the problems existing in manual oyster harvesting, equipment for automatic oyster harvesting has been developed and gradually promoted. Most of this automatic oyster harvesting equipment uses a rotating part to knock off oysters. However, as a moving part, the rotating part is prone to damage during actual operation, resulting in insufficient operating reliability of the oyster harvesting equipment.

[0004] Therefore, there is an urgent need to develop an automatic mature oyster harvesting device with high reliability for use on oyster rafts. Summary of the Utility Model

[0005] The main object of the utility model is to propose an oyster harvesting device and a ship, aiming to solve the problem of insufficient reliability of existing automatic mature oyster harvesting devices.

[0006] To achieve the above object, the utility model proposes an oyster harvesting device, which includes a stripping structure and a traction assembly; the stripping structure is provided with a traction channel and a blade assembly arranged around the traction channel; the movable end of the traction assembly passes through the traction channel and is used to connect with an oyster raft; the traction assembly is used to traction the oyster raft to move in a direction close to the blade assembly, so that the oysters on the oyster raft are blocked by the blade assembly and separated from the oyster raft.

[0007] In one embodiment, the blade assembly includes a plurality of inner blades and a plurality of outer blades; the plurality of inner blades are arranged around the traction channel, and the plurality of outer blades are arranged around the traction channel and the plurality of inner blades.

[0008] In one embodiment, the blade assembly is arranged on the first side of the stripping structure; the length of the outer blade protruding from the first side is greater than the length of the inner blade protruding from the first side.

[0009] In one embodiment, the cutting edge of the outer blade is arranged towards the traction channel; the cutting edge of the inner blade is arranged away from the traction channel.

[0010] In one embodiment, the oyster harvesting device further includes a water spraying structure, which includes a water inlet pipe, a first water spraying pipe, and a second water spraying pipe; one end of the water inlet pipe is used to connect to a water pump, and the other end of the water inlet pipe is connected to the water inlet ends of the first water spraying pipe and the second water spraying pipe; the water outlet end of the first water spraying pipe faces a plurality of inner blades; the water outlet end of the second water spraying pipe faces the outer blades.

[0011] In one embodiment, the traction assembly includes a winch drum and a traction rope. One end of the traction rope is wound around the winch drum, and the other end of the traction rope passes through the traction channel and is used to connect to an oyster raft; the traction rope is used to pull the oyster raft along the direction close to the blade assembly as the winch drum rotates.

[0012] In one embodiment, the oyster harvesting device further includes a motor, a generator set, and a control cabinet. The rotating shaft of the motor is in transmission connection with the winch drum, and the generator set is electrically connected to the motor through the control cabinet; the control cabinet is used to adjust the electric power output by the generator set.

[0013] In one embodiment, the traction assembly further includes a support drum, which is arranged between the winch drum and the peeling structure; the middle section of the traction rope is wound around the support drum; taking the part of the traction rope between the winch drum and the support drum as the first rope segment, and taking the part of the traction rope between the support drum and the peeling structure as the second rope segment, the first rope segment and the second rope segment form a first included angle, and the first included angle is less than 180°.

[0014] In one embodiment, the second rope segment is parallel to the extending direction of the traction channel.

[0015] The present utility model also proposes a ship, which includes the above-mentioned oyster harvesting device.

[0016] The technical solution of the present utility model adopts an oyster harvesting device, which includes a peeling structure and a traction assembly; the peeling structure is provided with a traction channel and a blade assembly arranged around the traction channel; the movable end of the traction assembly passes through the traction channel and is used to connect to an oyster raft; the traction assembly is used to pull the oyster raft along the direction close to the blade assembly, so that the oysters on the oyster raft are blocked by the blade assembly and separated from the oyster raft.

[0017] By adopting the technical solution of combining a traction component and a peeling structure, the utility model uses the movable end of the traction component to traction the oyster raft to move in the direction close to the blade component, so that the oysters on the oyster raft are blocked by the blade component and separated from the oyster raft. The most easily damaged part of the existing oyster harvesting equipment with a moving peeling structure is the moving peeling structure. However, since the peeling structure and the blade component of the utility model are stationary components and do not need to move, they are not easily damaged, thus improving the reliability of the oyster harvesting device. Therefore, the oyster harvesting device of the utility model improves the reliability as a whole and reduces the probability of failure. Moreover, the utility model uses the blade component to peel the oysters on the oyster raft, and the oysters on the oyster raft are fixed by tying with oyster ropes. During the peeling process, when the blade component contacts the surface of the oyster, the blade edge of the blade component cuts across the oyster rope tying the oyster, thus easily cutting the oyster rope and facilitating the separation of the oyster from the oyster raft. Compared with the existing technical solution of using a rotating part to knock off the oysters by brute force, the setting of the blade component improves the efficiency of peeling the oysters from the oyster raft and reduces the energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0019] Figure 1 FIG. is a schematic structural diagram of an embodiment of the oyster harvesting device provided by the present utility model;

[0020] Figure 2 is Figure 1 a side view along line A-A in;

[0021] Figure 3 is Figure 1 a partial enlarged view at B in.

[0022] Explanation of the reference numerals in the drawings:

[0023] 1. Oyster harvesting device; 11. Peeling structure; 111. Traction channel; 112. Blade component; 1121. Inner blade; 1122. Outer blade; 12. Traction component; 121. Rope winding drum; 122. Traction rope; 1221. First rope segment; 1222. Second rope segment; 123. Support drum; 13. Water spraying structure; 131. Water inlet pipe; 132. First water spraying pipe; 133. Second water spraying pipe; 14. Water pump; 15. Motor; 16. Generator set; 17. Control cabinet.

[0024] The realization of the purpose, functional characteristics and advantages of the present utility model will be further described in conjunction with embodiments with reference to the accompanying drawings. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0027] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0028] Oysters, also known as sea oysters and scientifically named Ostrea, are mollusks of the genus Ostrea in the family Ostreidae of the order Ostreoida. They are widely cultivated because of their plump, tender, fragrant and nutritious meat.

[0029] Traditional manual harvesting of oysters requires a large amount of manpower and time, consuming a large amount of labor costs. Its harvesting efficiency is low and the harvesting intensity is high. At present, the reliability of the existing developed oyster automatic harvesting equipment is not high. For the existing oyster automatic harvesting devices, some use rotating parts to knock off oysters, increasing the moving parts and reducing the reliability of the device. Therefore, an automatic harvesting device with high reliability is urgently needed to be developed.

[0030] Therefore, an automatic harvesting device for mature oysters applied to oyster rafts with high reliability is urgently needed to be developed.

[0031] The present utility model proposes an oyster harvesting device.

[0032] Please refer to Figure 1 , in an embodiment of the present utility model, the oyster harvesting device 1 includes a peeling structure 11 and a traction assembly 12; the peeling structure 11 is provided with a traction channel 111 and a blade assembly 112 arranged around the traction channel 111; the movable end of the traction assembly 12 is inserted into the traction channel 111 and is used for connecting with the oyster raft; the traction assembly 12 is used for pulling the oyster raft to move in a direction close to the blade assembly 112, so that the oysters on the oyster raft are blocked by the blade assembly 112 and separated from the oyster raft.

[0033] It should be noted that the oyster raft is to tie and fix the oysters on a rope and suspend the rope in the water, so that the oysters grow in the water. This breeding method is called hanging culture. Therefore, by pulling the oyster raft, the present traction assembly 12 can pull the oysters tied to the oyster raft in the direction of the blade assembly 112.

[0034] The traction assembly 12 can be set in the form of a roller cooperating with a rope. In this form, the movable end inserted into the traction channel 11 is a rope; it can also be set in the form of a chain cooperating with a sprocket. In this form, the movable end inserted into the traction channel 11 is a chain; of course, other forms can also be adopted, which will not be elaborated one by one here.

[0035] The traction channel 111 can be set as a through hole on the peeling structure 11, and this through hole is used to allow the movable end of the traction assembly 12 to be inserted therein.

[0036] By adopting the technical solution of the cooperation between the traction assembly 12 and the peeling structure, the present utility model uses the movable end of the traction assembly 12 to pull the oyster raft to move in a direction close to the blade assembly 112, so that the oysters on the oyster raft are blocked by the blade assembly 112 and separated from the oyster raft. For the existing oyster harvesting equipment with a moving peeling structure 11, the most easily damaged part is the moving peeling structure 11. Since the peeling structure 11 and the blade assembly 112 are static parts and do not need to move, they are not easily damaged, thus improving the reliability of the oyster harvesting device 1; therefore, the oyster harvesting device 1 of the present utility model improves the reliability as a whole and reduces the probability of failure.

[0037] In addition, the present utility model uses the blade assembly 112 to peel the oysters on the oyster raft, and the oysters on the oyster raft are tied and fixed with oyster ropes; during the peeling process, when the blade assembly 112 contacts the surface of the oysters, the blade of the blade assembly 112 cuts across the oyster ropes tying the oysters, thus easily cutting the oyster ropes and facilitating the separation of the oysters from the oyster raft; compared with the existing technical solution of using a rotating part to knock off the oysters by brute force, the setting of the blade assembly 112 improves the efficiency of peeling the oysters from the oyster raft and reduces the energy consumption.

[0038] For oysters of different sizes on the same oyster raft, it is difficult for a single-arrangement blade to achieve a good peeling effect on oysters of different body sizes. To solve this problem, in the embodiments of the present utility model, please refer to Figure 2 and Figure 3 , the blade assembly 112 includes a plurality of inner blades 1121 and a plurality of outer blades 1122; the plurality of inner blades 1121 are arranged around the traction channel 111, and the plurality of outer blades 1122 are arranged around the traction channel 111 and the plurality of inner blades 1121.

[0039] In this way, during the peeling process, the oyster raft is pulled by the movable end of the traction assembly 12 and moves towards the blade assembly 112. For larger oysters, they can be blocked by the outer blades 1122, and the oyster ropes are cut by the blades of the outer blades 1122, so that the large oysters are peeled off; for smaller oysters, they cannot come into contact with the outer blades 1122, but can be blocked by the inner blades 1121, and the blades of the inner blades 1121 can also cut the oyster ropes tied to the small oysters, thus realizing the peeling of the small oysters. Therefore, the solution of arranging the inner blades 1121 and the outer blades 1122 in the blade assembly 112 of this embodiment can achieve a good peeling effect on oysters of different sizes on the same oyster raft, thereby improving the adaptability of the present oyster harvesting device 1 to oysters of different sizes.

[0040] Moreover, compared with the solution of replacing the blade arrangement to adapt to oysters of different body sizes, since the arrangement of the inner blades 1121 and the outer blades 1122 in this embodiment can adaptively peel oysters of different body sizes without adjustment, the step of replacing the blade arrangement is reduced, thereby improving the peeling efficiency of the present oyster harvesting device 1.

[0041] In addition, the solution of arranging the plurality of inner blades 1121 around the traction channel 111 and the plurality of outer blades 1122 around the traction channel 111 and the plurality of inner blades 1121 can increase the contact parts with the oysters as much as possible, so as to fully block the oysters and fully cut the oyster ropes, thereby ensuring that the oysters can be smoothly peeled off from the oyster raft.

[0042] It should be noted that since oysters grow in seawater for a long time, a large amount of attachments, such as silt, will adhere to the surface of their shells. Therefore, during the process of the blade assembly 112 blocking the oysters and cutting the oyster ropes, a large amount of the scraped attachments will be generated and accumulated. This part of the scraped attachments will not only accumulate between the inner blades 1121 and the outer blades 1122, but also accumulate in the traction channel 111 and block the channel. To solve the above problems, multiple optional implementation manners are provided in this embodiment, and each implementation manner can be implemented alone or in combination.

[0043] As an optional implementation manner, please refer toFigure 1 The blade assembly 112 is disposed on the first side of the peeling structure 11; the length by which the outer blade 1122 protrudes from the first side is greater than the length by which the inner blade 1121 protrudes from the first side. Thus, since the inner blade 1121 and the outer blade 1122 have different heights, a certain slope is formed, facilitating flushing and preventing attachments such as silt from aggregating together.

[0044] As an alternative embodiment, the cutting edge of the outer blade 1122 is oriented towards the traction channel 111; the cutting edge of the inner blade 1121 is oriented away from the traction channel 111. Thus, not only can some attachments on the oyster be scraped off during the process of peeling the oyster, reducing the subsequent cleaning difficulty, but after the relative setting of the cutting edge directions of the inner blade 1121 and the outer blade 1122, more attachments will be scraped along the cutting edge direction into the area between the inner blade 1121 and the outer blade 1122, rather than falling into the traction channel 111, thereby reducing the possibility of clogging the traction channel 111.

[0045] As an alternative embodiment, please refer to Figure 1 and Figure 2 The oyster harvesting device 1 further includes a water spraying structure 13. The water spraying structure 13 includes a water inlet pipe 131, a first water spray pipe 132, and a second water spray pipe 133; one end of the water inlet pipe 131 is used to connect to a water pump 14, and the other end of the water inlet pipe 131 is connected to the water inlet ends of the first water spray pipe 132 and the second water spray pipe 133; the water outlet end of the first water spray pipe 132 is oriented towards a plurality of inner blades 1121; the water outlet end of the second water spray pipe 133 is oriented towards the outer blade 1122. Thus, through the arrangement of the first water spray pipe 132 and the second water spray pipe 133, water is sprayed onto the inner blade 1121 and the outer blade 1122, effectively cleaning the inner blade 1121 and the outer blade 1122, preventing the accumulated attachments from falling off from accumulating around the inner blade 1121 and the outer blade 1122, and thus avoiding clogging of the traction channel 111.

[0046] Among them, the water pump 14 connected to the water inlet pipe 131 can be set as a high-pressure water pump, so as to supply high-pressure water source to the water inlet pipe 131, enabling the water outlet ends of the first water spray pipe 132 and the second water spray pipe 133 to continuously spray high-pressure water source, improving the cleaning efficiency of the inner blade 1121 and the outer blade 1122.

[0047] In the embodiment of the present utility model, please refer to Figure 1 The traction assembly 12 includes a winch drum 121 and a traction rope 122. One end of the traction rope 122 is wound around the winch drum 121, and the other end of the traction rope 122 passes through the traction channel 111 and is used to connect to an oyster raft; the traction rope 122 is used to pull the oyster raft to move along the direction close to the blade assembly 112 as the winch drum 121 rotates.

[0048] Thus, in this embodiment, by winding the towing rope 122 around the rope winding drum 121, the rotation of the rope winding drum 121 drives the towing rope 122, and then the towing rope 122 pulls the oyster raft; this way of harvesting the oyster raft is not only easy to operate, but also the rope winding drum 121 as a moving part only needs to complete the rope winding operation, is not easy to be damaged, and has high reliability; while the towing rope 122 has good wear resistance, is not easy to wear, and even if it wears, it is easy to replace, and the replacement and maintenance cost is low, which is convenient for individual oyster farmers to operate and replace and maintain alone.

[0049] To solve the problems of large labor consumption and low efficiency when the oyster harvesting device 1 uses manual operation of the traction assembly 12, in the embodiment of the present invention, please refer to Figure 1 , the oyster harvesting device 1 may further include a motor 15, and the rotating shaft of the motor 15 is in transmission connection with the rope winding drum 121.

[0050] Thus, in this embodiment, by using the motor 15 to be in transmission connection with the rope winding drum 121, the rotating shaft of the motor 15 can drive the rope winding drum 121, solving the problems of large labor consumption and low efficiency of manually operating the rope winding drum 121.

[0051] Among them, the motor 15 can be set as a variable-frequency motor, and the rotation speed of the rope winding drum 121 can be adjusted to control the traction force, increasing the operability of the oyster harvesting device 1. And when the harvesting efficiency requirement is not high, the operating speed of the variable-frequency motor can also be reduced to avoid the high-intensity operation of the variable-frequency motor, thereby improving the reliability. Compared with the mechanical speed regulation mechanism, the variable-frequency motor using the variable-frequency speed regulation technology can simplify the mechanical structure, reduce the occupied space of the motor 15, help to reduce the volume of the oyster harvesting device 1, realize miniaturization, and is convenient to be placed on the oyster farmer's own small boat for offshore operations, reducing the occupation of the space on the boat.

[0052] Furthermore, since there may be a problem of lack of power supply when using the motor 15 to drive to harvest oysters offshore, especially for oyster farmers who use their own small boats for harvesting, the power supply on the boat may be insufficient or even there is no power supply. Therefore, to solve this problem, in the embodiment of the present invention, please refer to Figure 1 , the oyster harvesting device 1 may further include a generator set 16 and a control cabinet 17. The generator set 16 is electrically connected to the motor 15 through the control cabinet 17; the control cabinet 17 is used to adjust the electric power output by the generator set 16.

[0053] Thus, in this embodiment, by using the generator set 16 to supply power to the motor 15, the problem of filling the power gap required to drive the traction assembly 12 in the case of insufficient offshore power supply is realized.

[0054] Among them, it should be noted that the control cabinet 17 can be a control module with a positive feedback circuit, a negative feedback circuit, a switch, and control buttons, and the output electric power of the generator set 16 can be adjusted by means of positive feedback regulation and negative feedback regulation; in addition, the control cabinet 17 can also be a control module with functions such as information storage, simple data processing, signal input and output on an existing MCU (Microcontroller Unit) micro control unit or single-chip microcomputer, and can realize the adjustment of the output electric power of the generator set 16. After the control cabinet 17 is provided, the oyster farmers can adjust it according to the actual harvesting efficiency requirements, thereby increasing the flexibility and operability of the oyster harvesting device 1.

[0055] In an embodiment of the present invention, please refer to Figure 1 and Figure 2 , the traction assembly 12 may further include a support roller 123, and the support roller 123 is arranged between the rope winding roller 121 and the stripping structure 11; the middle section of the traction rope 122 is wound around the support roller 123; the part of the traction rope 122 between the rope winding roller 121 and the support roller 123 is used as the first rope segment 1221, and the part of the traction rope 122 between the support roller 123 and the stripping structure 11 is used as the second rope segment 1222, and the first rope segment 1221 and the second rope segment 1222 form a first included angle, and the first included angle is less than 180°.

[0056] In this way, in this embodiment, by adopting the support roller 123 and winding the traction rope 122 around the support roller 123, the tension of the traction rope 122 can be maintained through the tensioning action of the support roller 123, ensuring that during the movement of the oyster raft, the traction rope 122 can maintain an appropriate tight state, avoiding efficiency loss or unstable operation caused by relaxation; and the support roller 123 forms a first included angle less than 180° between the first rope segment 1221 and the second rope segment 1222, and the support roller 123 plays a guiding role to guide the traction rope 122 to move along a predetermined path, preventing the traction rope 122 from deviating from the track, and improving the controllability and accuracy of the overall operation.

[0057] Furthermore, since during the process of the oyster harvesting device 1 stripping oysters, the traction rope 122 will continuously rub against the traction channel 111 when being retracted, accelerating the wear of the traction channel 111. Therefore, in order to reduce the wear of the traction rope 122 on the hole wall of the through hole, in an embodiment of the present invention, please refer to Figure 1 and Figure 2 , the second rope segment 1222 is parallel to the extending direction of the traction channel 111.

[0058] Thus, in this embodiment, by adopting the scheme that the second rope segment 1222 is parallel to the extending direction of the traction channel 111, the pressure and friction between the second rope segment 1222 and the traction channel 111 are reduced, thereby reducing the wear caused to the traction channel 111 and prolonging the service life of the traction channel 111.

[0059] The present utility model also provides a ship, which includes the above-mentioned oyster harvesting device 1. The specific structure of the oyster harvesting device 1 refers to the above-mentioned embodiment. Since this ship adopts all the technical solutions of the above-mentioned all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated here one by one.

[0060] The above description is only an exemplary embodiment of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims

1. An oyster harvesting device, characterized in that: The oyster harvesting device comprises: A stripping structure, wherein the stripping structure is provided with a traction channel and a blade assembly arranged around the traction channel; A traction assembly, the movable end of which is inserted into the traction channel and used to be connected to the oyster rack; the traction assembly is used to pull the oyster rack to move in a direction close to the blade assembly, so that the oysters on the oyster rack are blocked by the blade assembly and detached from the oyster rack.

2. The oyster harvesting device according to claim 1, characterized in that: The blade assembly includes a plurality of inner blades and a plurality of outer blades; the plurality of inner blades are arranged around the traction channel, and the plurality of outer blades are arranged around the traction channel and the plurality of inner blades.

3. The oyster harvesting device according to claim 2, characterized in that: The blade assembly is arranged on a first side surface of the stripping structure; the length of the outer blade protruding from the first side surface is greater than the length of the inner blade protruding from the first side surface.

4. The oyster harvesting device according to claim 3, characterized in that: The blade of the outer blade is arranged toward the traction channel; the blade of the inner blade is arranged away from the traction channel.

5. The oyster harvesting device according to claim 2, characterized in that: The oyster harvesting device further comprises a water spraying structure, which comprises a water inlet pipe, a first water spraying pipe and a second water spraying pipe; one end of the water inlet pipe is used to connect to a water pump, and the other end of the water inlet pipe is connected to the water inlet end of the first water spraying pipe and the water inlet end of the second water spraying pipe; The water outlet end of the first water spray pipe is arranged toward the plurality of inner blades; and the water outlet end of the second water spray pipe is arranged toward the outer blades.

6. The oyster harvesting device according to claim 1, characterized in that: The traction assembly includes a rope drum and a traction rope, one end of the traction rope is wound around the rope drum, and the other end of the traction rope is passed through the traction channel and is used to connect with the oyster rack; the traction rope is used to pull the oyster rack to move in a direction close to the blade assembly as the rope drum rotates.

7. The oyster harvesting device according to claim 6, characterized in that: The oyster harvesting device further comprises a motor, a generator set and a control cabinet. The rotating shaft of the motor is drivingly connected to the rope drum, and the generator set is electrically connected to the motor through the control cabinet. The control cabinet is used to adjust the electric power output by the generator set.

8. The oyster harvesting device according to claim 6, characterized in that: The traction assembly further comprises a support drum, wherein the support drum is arranged between the rope twisting drum and the stripping structure; The middle section of the traction rope is wound around the support drum; The portion of the traction rope between the rope twisting drum and the support drum is used as the first rope segment, and the portion of the traction rope between the support drum and the stripping structure is used as the second rope segment. The first rope segment and the second rope segment form a first angle that is less than 180°.

9. The oyster harvesting device according to claim 8, characterized in that: The second rope segment is parallel to an extending direction of the traction channel.

10. A ship, characterized in that: An oyster harvesting device comprising the oyster harvesting device according to any one of claims 1 to 9.

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