Striping machine for long-line hanging cultivation of oysters and operation method of stripping machine

Abstract

The invention relates to a stripping machine for longline hanging culture oysters. The stripping machine comprises a motor, a transmission device, a barrel, a separation disc, a scraper and a baffle, the motor drives the barrel to rotate through the transmission device; a plurality of separation discs are axially distributed on the barrel at intervals, the diameter of the separation disc in the middle is the largest, and the diameters of the separation discs on the two sides are sequentially decreased; a plurality of scrapers are vertically fixed to the two sides of the partition disc at intervals in the radial direction, a first interval is formed between every two axially adjacent scrapers, and the first intervals are larger than the diameter of the breeding rope and smaller than the outer diameter of oysters; the distance between every two adjacent partition discs is a second distance, and the second distance is smaller than the outer diameter of the buoy. A blocking device is arranged above the cylinder body and located in the first interval. In the continuous mechanical operation process, separation of oysters and culture ropes and lossless passing of buoys are achieved, manpower consumption is greatly reduced, and the working efficiency is improved; compared with an existing oyster falling-off mode that an impeller rapidly strikes the oyster falling-off device, the oyster falling-off device has the advantages of being safe, reliable, capable of automatically avoiding the buoy and small in oyster damage rate.

Description

Technical Field

[0001] The invention relates to a longline culture oyster stripping machine and an operation method thereof, and belongs to the technical field of longline culture and harvesting of oysters. Background Art

[0002] Longline raft culture is a common offshore oyster farming method. It mainly consists of a rope about 80-120m long, with both ends connected to seabed anchor piles, and several buoys connected at equal distances in the middle to allow the rope to bear weight and float. Oysters are attached to a 2-3m long farming rope. One farming rope can be attached to multiple oysters. One end of the farming rope is connected to the rope and the other end hangs freely. Several ropes are equidistantly arranged vertically under the stem rope to form an oyster farming longline raft. The raft relies on the buoyancy of the buoys evenly distributed on the rope to float horizontally 0.5-1m below the sea surface. Several longline rafts are horizontally arranged under the sea surface to form a raft farming area.

[0003] Traditionally, the oysters are removed by manually driving a boat into the raft area to cut the farming rope from the rope, and then lifting the oyster farming rope from the water to the cabin by manpower. After the harvest is completed, the oysters are transported to the shore and manually knocked off the farming rope, or a single farming rope is wound with a mechanical rotating device and pulled out from the gap to squeeze the oysters off. This method is labor-intensive and inefficient, and is no longer suitable for modern production models.

[0004] There are also mechanized ways to harvest oysters on longline ropes, such as using a pair of high-speed impellers with rotating shafts parallel to the stem ropes. The impellers rotate in opposite directions, and the culture rope passes through the middle of the pair of impellers. The impellers hit the oysters on the culture rope at high speed and knock the oysters off. This method causes great damage to the oysters and causes high losses. Summary of the invention

[0005] The purpose of the present invention is to provide a mechanized longline culture oyster removal method, which is safe and reliable, has automatic float avoidance, and has a low oyster damage rate compared to the prior art.

[0006] The present invention adopts the following technical solutions:

[0007] A longline oyster stripping machine comprises a motor 21, a transmission device 22, a cylinder 23, a partition plate 24, a scraper 25 and a baffle plate 28; the motor 21 drives the cylinder 23 to rotate through the transmission device 22; a plurality of partition plates 24 are distributed on the cylinder 23 along the axial direction, wherein the diameter of the middle partition plate is the largest, and the diameters of the partition plates 24 on both sides decrease in sequence; a plurality of scrapers 25 are vertically fixed at radial intervals on both sides of the partition plate 24, and a first spacing is provided between axially adjacent scrapers 25, and the first spacing is greater than the diameter of the culture rope and less than the outer diameter of the oyster; the spacing between adjacent partition plates 24 is a second spacing, and the second spacing is less than 1 / 2 of the outer diameter of the float 7; a baffle plate 28 is arranged above the cylinder 23, and a slot hole is provided on the baffle plate 28 for the partition plates 24 and the scraper 25 to pass through when rotating.

[0008] Preferably, it further comprises a frame 29 , and the lower part of the frame 29 is fixedly connected to the baffle 28 .

[0009] Preferably, the outer diameter of the scraper 25 connected to the partition plate is the same as or slightly smaller than that of the partition plate 24, and the outer end is beveled, so as not to directly contact the float 7 on the stem rope 4 and facilitate the farming rope to enter the first spacing.

[0010] Furthermore, it also includes a base 1 , and the frame 29 is fixed on the base 1 .

[0011] Preferably, the scraper 25 is beveled to form a certain angle with the partition plate 24, the angle being 45-65 degrees.

[0012] An operating method of the longline oyster stripping machine described in any one of the above, comprising the following steps:

[0013] S1. The rope pulling device lifts the rope together with the culture rope from the sea and passes over the stripping device. The culture rope and the attached oysters enter the gap between the paired rotating scrapers of the stripping machine.

[0014] S2. The diameter of the middle ring is the largest, and the diameters of the two side rings decrease successively, forming slopes on both sides. Multiple overlapping breeding ropes will slide down into the gaps on both sides due to gravity;

[0015] S3, using the squeezing force of the rotating scraper to separate most of the oysters from the culture rope, a few oysters at the end of the culture rope rotate with the movement of the scraper and hit the baffle 28 and fall off;

[0016] S4, the breeding rope leaves the drum and continues to move forward with the stem rope.

[0017] The beneficial effects of the present invention are:

[0018] 1) In the process of continuous mechanized operation, oysters are separated from the culture ropes and floats pass without damage, which greatly reduces manpower consumption and improves work efficiency. The material removal capacity is 5-7 times higher than that of traditional manual operation;

[0019] 2) Compared with the existing oyster shedding method of rapid impeller impact, the present invention is safe and reliable, the float automatically avoids, and the oyster damage rate is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the main part of the longline oyster stripping machine, wherein (a) is the front view and (b) is the left view.

[0021] Figure 2 It is a schematic diagram of the stripping process, wherein (a) is the main view and (b) is the top view.

[0022] Figure 3 This is a schematic diagram of the process that the float passes through.

[0023] Figure 4 This is a schematic diagram of the process by which an oyster passes.

[0024] In the figure,

[0025] 21. Motor 22. Transmission device 23. Cylinder 24. Spacer 25. Scraper 26. Through shaft 27. Bearing 28. Baffle 29. Frame;

[0026] 1. Machine base 2. Stripper 3. Traction wheel 4. Rope 5. Culture rope 6. Oyster 7. Float;

[0027] F1. The float contacts the middle spacer. F2. The float deviates to one side due to gravity. F3. The float avoids the center position and passes through.

[0028] M1. The scraper drives the tail end oyster to rotate. M2. The oyster hits the baffle. M3. The oyster falls and the culture rope loosens. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] The present invention relates to a device and operation method for removing oysters cultured in a longline culture method. The principle of the device is to use a pair of scrapers fixed on a cylindrical drum to form a continuous gap through rotation to squeeze the oysters on the culture rope, and to use spacers of different diameters arranged in a shuttle shape to deviate the float from the rope travel route, so as to achieve the purpose of continuous removal.

[0031] See also Figure 1 The main mechanisms of the stripping machine include: a motor 21, a transmission device 22, a cylinder 23, a partition plate 24, a scraper 25, a through shaft 26, a bearing 27, a baffle 28, and a frame 29.

[0032] See also Figure 1 Specifically, a plurality of partition plates 24 are evenly distributed on the cylindrical body 23, the diameter of the middle partition plate 24 is the largest, and the diameters of the partition plates 24 on both sides decrease successively, and the appearance is shuttle-shaped;

[0033] A plurality of pairs of scrapers 25 are fixed between the two partition plates 24. The tip of each scraper 25 is at the same height as the outer edge of the partition plate 24, and the bottom is connected to the cylinder 23. The oblique mouth of the scraper 25 forms a certain angle with the partition plate 24, and the angle is 45-65 degrees. There is a certain width gap between the scrapers 25, and the gap width is greater than the diameter of the culture rope and less than the average width of the oyster. The scrapers 25 are evenly distributed on the partition plate 24 in a ring shape.

[0034] The through shaft 26 passes through the center line of the cylinder 23, and the two ends of the through shaft 26 are respectively positioned by bearings 27 and transmission devices 22, and the rotational power is provided by motor 21 (electric motor or hydraulic motor). The transmission device 22 and bearings 27 are installed on the frame 29, and the baffle 28 is installed on the crossbeam of the frame 29 at an equal distance, located between the gaps of a pair of scrapers 25, and the head of the baffle 28 is close to the cylinder 23.

[0035] See also Figure 2 The operation method is to use the rope traction device to lift the rope together with the farming rope from the sea and pass it over the stripping device. The farming rope together with the attached oysters enter the gap between the paired rotating scrapers of the stripper, and the squeezing force of the rotating scrapers is used to separate the oysters from the farming rope.

[0036] The stripper 2 is installed on the machine base 1 between two traction wheels 3. The rope 4 is lifted by the lifting equipment and placed in the V-shaped grooves of the front and rear traction wheels 3. When the traction wheels rotate, the rope 4 moves horizontally, and the suspended culture rope 5 connected to the rope 4 at one end contacts the stripper 2. When the culture rope 5 enters the gap between adjacent spacers 24, the scraper 25 on the spacer 24 collides and squeezes the oysters 6 on the culture rope 5 under the action of rotation, so that the oysters 6 are separated from the culture rope 5 and fall off. Since the diameter of the middle spacer 34 is the largest, the diameters of the spacers 34 on both sides decrease successively, forming slopes on both sides, and multiple overlapping culture ropes 5 will slide down to the gaps on both sides due to gravity, ensuring that the culture ropes 5 are completely stripped in the stripper 2.

[0037] When the float 7 contacts the stripper 2, the middle spacer 24, due to its largest diameter, first hits the float 7, and the diameters of the spacers 24 on both sides decrease in sequence to form a slope. When the rope 4 pulls the float 7 through the stripper 2, the float 7 will be squeezed to one side to avoid the narrow passage between the rope 4 and the stripper. In addition, the edge of the scraper 25 is lower than the outer edge of the spacer 24, so that the scraper 25 cannot contact the float 7 to avoid damage to the float 7. Figure 3 shown.

[0038] See also Figure 4When the culture rope 5 is stripped to the tail, due to the weight reduction, the gap between the pair of scrapers 25 will drive the oysters 6 at the tail to rotate around the cylinder 23. When the oysters 6 hit the baffle 28 at the rear of the stripper 2, they will fall off the culture rope 5. The culture rope 6 loosens and droops, and is taken away by the rope 4. Figure 4 shown.

[0039] The operation of the longline oyster stripper includes the following steps:

[0040] S1. The rope pulling device lifts the rope together with the culture rope from the sea and passes over the stripping device. The culture rope and the attached oysters enter the gap between the paired rotating scrapers of the stripping machine.

[0041] S2. The diameter of the middle ring is the largest, and the diameters of the two side rings decrease successively, forming slopes on both sides. Multiple overlapping breeding ropes will slide down into the gaps on both sides due to gravity;

[0042] S3, using the squeezing force of the rotating scraper to separate most of the oysters from the culture rope, a few oysters at the end of the culture rope rotate with the movement of the scraper and hit the baffle 28 and fall off;

[0043] S4, the breeding rope leaves the drum and continues to move forward with the stem rope.

[0044] The present invention is suitable for the destocking operation of oysters cultured on longline raft frames, and can realize the separation of oysters from the culture ropes and the lossless passage of floats during continuous mechanized operation, greatly reducing manpower consumption and improving work efficiency. The destocking capacity is 5-7 times higher than that of traditional manual operation, providing technical support for mechanized continuous oyster harvesting operations at sea. Compared with the existing oyster shedding method of rapid impeller impact, the present invention has the characteristics of safety and reliability, automatic float avoidance, and low oyster damage rate.

Claims

1. A longline oyster stripping machine, characterized in that: It comprises a motor (21), a transmission device (22), a cylinder (23), a partition plate (24), a scraper (25), and a baffle (28); The motor (21) drives the cylinder (23) to rotate through the transmission device (22); A plurality of partition plates (24) are distributed on the cylinder (23) at intervals along the axial direction, wherein the partition plate in the middle has the largest diameter, and the diameters of the partition plates (24) on both sides decrease in sequence; A plurality of scrapers (25) are vertically fixed at intervals along the radial direction on both sides of the partition plate (24), and there is a first spacing between axially adjacent scrapers (25), and the first spacing is greater than the diameter of the culture rope and less than the outer diameter of the oyster; The spacing between adjacent spacers (24) is a second spacing, and the second spacing is smaller than 1 / 2 of the outer diameter of the float (7); A blocking device is arranged above the cylinder (23), and the blocking device is located within the first spacing.

2. The longline oyster stripping machine according to claim 1, characterized in that: The blocking device is a plurality of baffles (28) arranged at intervals.

3. The longline oyster stripping machine according to claim 1, characterized in that: It also includes a frame (29), the lower part of which is fixedly connected to the baffle (28).

4. The longline oyster stripping machine according to claim 1, characterized in that: The outer diameter of the scraper (25) connected to the partition is the same as or slightly smaller than that of the partition (24), and the outer end is beveled, so as not to directly contact the float (7) on the stem rope (4) and to facilitate the cultivation rope to enter the first spacing.

5. The longline oyster stripping machine according to claim 3, characterized in that: It also comprises a base (1), and the frame (29) is fixed on the base (1).

6. The longline oyster stripping machine according to claim 1, characterized in that: The scraper (25) has an oblique opening which forms a certain angle with the spacer (24), and the angle is 45-65 degrees.

7. An operating method of the longline oyster stripping machine according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. The rope pulling device lifts the rope together with the culture rope from the sea and passes over the stripping device. The culture rope and the attached oysters enter the gap between the paired rotating scrapers of the stripping machine. S2. The diameter of the middle ring is the largest, and the diameters of the two side rings decrease successively, forming slopes on both sides. Multiple overlapping breeding ropes will slide down into the gaps on both sides due to gravity; S3, using the squeezing force of the rotating scraper to separate most of the oysters from the culture rope, a small number of oysters at the end of the culture rope rotate with the movement of the scraper and hit the baffle (28) and fall off; S4, the breeding rope leaves the drum and continues to move forward with the stem rope.

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