An eel screening and lifting device

Abstract

The present application relates to the technical field of eel breeding, and discloses an eel screening and lifting device, including a lifting frame, a lifting frame slidably mounted on the lifting frame, a holding pool and a receiving pool, a lifting device is mounted on the upper end of the lifting frame, the lower end of the lifting frame is located in the holding pool, and the upper end of the lifting frame is close to the receiving pool. The lifting frame includes an outer frame and an inner frame, the inner frame is sleeved outside the outer frame, an opening is opened at the lower end of the side wall of the inner frame, part of the inner frame extends out of the outer frame, and a water-permeable hole is opened on the peripheral side of the inner frame extending out of the outer frame, the pull rope of the lifting device is connected to the inner frame, the outer frame is connected to a connecting block, the connecting block is located above the inner frame, and the connecting block is detachably connected to the pull rope; two interception plates and a bottom plate are mounted on the upper end of the outer frame, the two interception plates are located on both sides of the bottom plate, and when the opening of the inner frame is opened, the two interception plates are respectively located on both sides of the level of the inner frame opening. The present application can provide eels with a better living environment during the transmission process from the breeding pool to the screening.

Description

Technical Field

[0001] The present application relates to the technical field of eel farming, and in particular to an eel screening and lifting device. Background Art

[0002] During the eel breeding process, eels of different sizes need to be graded and screened to select high-quality fresh eels, improve the quality of eel breeding, and thus increase the eel sales rate. Eels go from eel breeding ponds to eel screening devices. After the eels are screened, eels of different sizes enter different temporary holding ponds.

[0003] The eel screening device includes a screening basket, in which grilles of different densities are arranged in sequence. The screened eels enter the temporary holding pond and do not return. The screening basket is located higher than the temporary holding pond. If the breeding pond, eel screening device and temporary holding pond are all in the breeding workshop on the same floor, the height positions of the breeding pond, eel screening device and temporary holding pond will be different. The breeding pond is usually lower than the screening basket of the eel screening device. For the eels to enter the eel screening device, an eel lifting device is required to lift the eels to a certain height first, and then the eels go down into the screening basket.

[0004] The lifting device used before eel screening is as follows Figure 1 As shown, it includes a transport basket 10 and a lifting frame 1. A winch for pulling the transport basket 10 up and down is installed on the lifting frame 1. A receiving pool 4 and a conveying pipe 5 are installed on the upper end of the lifting frame 1. The upper end of the conveying pipe 5 is connected to the receiving pool 4, and the lower end of the conveying pipe 5 is connected to the screening basket. The lifting device also includes a holding pool 3. When the transport basket 10 is located at the lowest end of the lifting frame 1, the transport basket 10 is located in the holding pool 3. The holding pool 3 can hold water flowing out of the transport basket 10 and small eels that accidentally escape from the transport basket 10. Leakage holes are distributed on the outer peripheral side of the upper end of the transport basket 10, and excess water in the transport basket 10 can flow out from the leakage holes. The side wall of the transport basket 10 is provided with an opening, and a sealing plate 20 for blocking the opening is also installed on the side wall of the transport basket 10. The transport basket 10 is installed on an electric telescopic rod that drives the sealing plate 20 downward to block the opening. The conveying pipe 5 of the breeding pond is located above the transport basket 10. The eels enter the transport basket 10. When the winch lifts the transport basket 10 to be close to the receiving pool 4, the opening of the side wall of the transport basket 10 is close to the receiving pool 4. After the opening 222 is opened, the eels enter the receiving pool 4 and then enter the screening basket through the conveying pipe 5.

[0005] With respect to the above-mentioned related technologies, the eels carry water into the transport basket 10, and the water in the transport basket 10 overflows into the holding pool 3, so that water accumulates in the holding pool 3. The accumulated water in the holding pool 3 can enter the transport basket 10 through the gap between the sealing plate 20 and the transport basket 10, so that the eels that gradually enter the transport basket 10 come into contact with the accumulated water. However, the eels have relatively high requirements for water quality. In order to reduce the contact of the eels with poor water quality during transportation, the accumulated water in the holding pool 3 should be frequently extracted. However, the water cannot be extracted when the eels enter the transport basket 10 to prevent the eels that escape into the holding pool 3 from being extracted. In addition, some impurities will still remain in the holding pool 3, such as the eel's debris. Therefore, the overall environment during the eel transmission process needs to be improved. Summary of the invention

[0006] In order to provide eels with a better living environment during the transmission process from the breeding pond to the screening, the present application provides an eel screening and lifting device.

[0007] The present application provides an eel screening and lifting device, which adopts the following technical solution:

[0008] The lifting device for screening eels comprises a lifting frame, a lifting frame slidably installed on the lifting frame, a containing pool and a receiving pool, a lifting device is installed at the upper end of the lifting frame, the lower end of the lifting frame is located in the containing pool, and the upper end of the lifting frame is close to the receiving pool. The lifting frame comprises an outer frame and an inner frame, the inner frame is sleeved on the outside of the outer frame, the outer frame is in sliding contact with the lifting frame, the lower end of the side wall of the inner frame is provided with an opening, part of the inner frame extends out of the outer frame, and the peripheral side of the part of the inner frame extending out of the outer frame is provided with a water-permeable hole, the pull rope of the lifting device is connected to the inner frame, the outer frame is connected to a connecting block, the connecting block is located above the inner frame, and the connecting block is detachably connected to the pull rope; two intercepting plates and a bottom plate are installed at the upper end of the outer frame, the two intercepting plates are located on both sides of the bottom plate, and when the opening of the inner frame is opened, the two intercepting plates are respectively located on both sides of the horizontal opening of the inner frame.

[0009] By adopting the above technical solution, the lifting device pulls the lifting frame to move up and down along the lifting frame, and the eels can be lifted from bottom to top to a certain height and then released, so that the eels can smoothly enter the next screening process;

[0010] When the lifting frame slides to the lower end of the lifting frame, the eels are received. The inner frame of the lifting frame is sleeved in the outer frame. The outer frame blocks the opening of the inner frame. The excess water in the lifting frame flows into the holding pool from the water-permeable holes of the inner frame. When the outer frame blocks the water in the holding pool, the water in the holding pool is not easy to enter the lifting frame. If the water in the holding pool is about to be higher than the outer frame, the water in the holding pool is pumped out or released. The water received by the eels in the lifting frame is the water directly flowing out of the breeding pool, which is relatively clean, so that the living environment of the eels is not easily damaged during transportation, and they can have a better living environment.

[0011] When a certain amount of eels are loaded in the lifting frame, the lifting device moves the entire lifting frame upward. When the lifting frame is sent to the upper end of the lifting frame, the connecting block is removed from the pull rope. Since the connecting block is located above the inner frame, the entire outer frame slides downward until the connecting block abuts against the inner frame and no longer slides. The outer frame slides downward to open the opening of the inner frame. The upper end of the outer frame and the two intercepting plates have an intercepting effect on the eels, so that the eels in the inner frame can smoothly enter the next screening process.

[0012] Optionally, a baffle is slidably installed on the upper end of the lifting frame, the baffle is connected to a push rod, and the outer frame has a protrusion. When the outer frame is close to the receiving pool, the push rod abuts against the protrusion.

[0013] By adopting the above technical solution, when the lifting frame is hoisted to the upper end of the lifting frame until the intercepting plate contacts the baffle, the push rod abuts against the protrusion, and the baffle moves with the movement of the lifting frame, so that the baffle rises when the lifting frame rises. When the eel leaves the inner frame and enters the receiving pool, the baffle also serves as a shield.

[0014] Optionally, the pull rope passes through the connecting block, the connecting block is equipped with an insertion rod, and the pull rope has a socket for the insertion rod to be inserted.

[0015] By adopting the above technical solution, the connection block is connected to the pull rope by means of plugging the rod, and the connection method between the connection block and the pull rope is simple to operate.

[0016] Optionally, the connecting block is provided with a first mounting groove for installing the insertion rod, and the connecting block is provided with a push block for driving the insertion rod to partially extend out of the first mounting groove; the connecting block is provided with a driving component for driving the push block to slide, and when the push block leaves the insertion rod, a reset component is installed in the first mounting groove for driving the insertion rod back to the first mounting groove.

[0017] By adopting the above technical solution, the insertion rod can always be installed on the connecting block through the first mounting groove. When the insertion rod needs to form a connection relationship with the pull rope, the push block is used to drive part of the insertion rod to extend out of the first mounting groove and connect with the pull rope. The driving component can be controlled as needed. When the push block leaves the insertion rod, the reset member automatically drives the insertion rod directly back to the first mounting groove, so that the connection relationship between the insertion rod and the pull rope is close to automation.

[0018] Optionally, the driving assembly includes a driving rod and a driving source for driving the driving rod to extend and retract, the driving source is mounted on the connecting block, and the driving rod is connected to the pushing block.

[0019] By adopting the above technical solution, the driving source controls the insertion rod in the first installation slot to extend out of the first installation slot, and the insertion rod extends out of the first installation slot and is connected to the pull rope; when the driving source drives the push block to leave the insertion rod, the reset member drives the insertion rod to leave the pull rope.

[0020] Optionally, a first sensor is installed at the upper end of the lifting frame, and a second sensor is installed at the lower end of the lifting frame. When the driving source approaches the first sensor, the insertion rod leaves the pull rope; when the inner frame approaches the second sensor, the insertion rod is inserted into the pull rope.

[0021] By adopting the above technical solution, after the lifting frame is hoisted to the upper end of the lifting frame, the first sensor drives the plug rod to leave the pull rope, and the connecting block of the outer frame slides downward along the pull rope, thereby opening the opening of the inner frame; after the eels in the inner frame are released, the pull rope moves the inner frame and the outer frame downward, the outer frame first enters the holding pool, and then the inner frame slowly slides into the outer frame, and when the inner frame is re-connected to the outer frame, the part of the pull rope with the socket is close to the plug rod, and the inner frame is close to the second sensor, and the second sensor drives the plug rod to be re-connected to the pull rope.

[0022] Optionally, a connecting rod is connected between the outer frame and the connecting block, the connecting rod is coaxially arranged with the inner frame, a baffle is arranged on the outer peripheral side of the connecting rod, and the baffle is spirally distributed along the length direction of the connecting rod.

[0023] By adopting the above technical solution, when the outer frame slides downward to leave the inner frame, the connecting rod and the inner frame slide relatively, and the spiral blocking piece always has a blocking effect on the bottom of the inner frame. The eel can only leave the inner frame from the opening. The position change of the connecting rod has a stirring effect on the eel in the inner frame. When the eel wriggles, it contacts the blocking piece, and the eel exerts a downward pressure on the blocking piece, so that the outer frame not only slides downward due to its own gravity, but also part of the weight of the eel is applied to the connecting rod, thereby accelerating the downward sliding speed of the outer frame.

[0024] Optionally, the pull rope is detachably connected to the inner frame, the inner frame is rotatably installed in the outer frame, bristles are distributed on the outer circumference of the inner frame, and the outer frame is provided with a water outlet and a sealing member for sealing the water outlet.

[0025] By adopting the above technical solution, when cleaning the inner frame, the inner wall of the inner frame is mainly cleaned, and the inner wall of the outer frame also needs to be cleaned. After the pull rope is removed from the inner frame, the inner wall of the outer frame can be cleaned by rotating the inner frame.

[0026] Optionally, a guide port is provided on the upper end surface of the outer frame, and when the inner frame contacts the connecting block, the opening of the inner frame is connected to the guide port.

[0027] By adopting the above technical solution, the sewage in the inner frame can flow into the outer frame from the opening and then be discharged from the water outlet of the outer frame, so that the inner frame does not need to be completely disassembled from the outer frame.

[0028] In summary, the present application includes at least one of the following beneficial effects:

[0029] 1. The outer frame has a blocking effect on the opening of the inner frame, so that when the lifting frame receives eels, the excess water in the lifting frame can flow out, and the water in the holding pool is not easy to return to the lifting frame, so that the environment of the eels in the lifting frame is not easily destroyed, thereby improving the eels' better living environment during the transmission process from the breeding pond to the screening;

[0030] 2. During the lifting process of the lifting frame, the insertion rod can automatically form a disassembly or connection relationship with the pull rope, so that the entire lifting process can be automated;

[0031] 3. The movement of the eel in the inner frame can also accelerate the downward sliding of the outer frame, further shortening the time of eel transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the related technology;

[0033] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0034] Figure 3 yes Figure 2 A magnified schematic diagram of point A;

[0035] Figure 4 is a cross-sectional schematic diagram of an inner frame opening in an embodiment of the present application;

[0036] Figure 5 It is a schematic diagram of an embodiment of the present application in which an interception plate is provided on the outer frame;

[0037] Figure 6 yes Figure 5An enlarged schematic diagram of point B;

[0038] Figure 7 is a schematic diagram of an embodiment of the present application when the inner frame opening is opened;

[0039] Figure 8 is a schematic diagram of an embodiment of the present application in which a drive assembly is installed;

[0040] Fig. 9 yes Figure 8 An enlarged schematic diagram of point C;

[0041] Fig.10 is a schematic diagram of the structure in which a connecting rod of an embodiment of the present application is installed with a baffle;

[0042] Fig.11 It is a cross-sectional schematic diagram of the outer wall of the inner frame of the embodiment of the present application with bristles installed.

[0043] Description of reference numerals: 1, lifting frame; 10, transport basket; 20, sealing plate; 11, guide rail; 12, baffle; 13, push rod; 2, lifting frame; 21, outer frame; 211, connecting rod; 212, connecting block; 213, intercepting plate; 215, bottom plate; 216, protrusion; 217, diversion port; 218, blocking block; 22, inner frame; 221, water permeable hole; 222, opening; 223, buckle ; 224, bristles; 3, containing pool; 4, receiving pool; 41, shielding plate; 5, conveying tube; 6, pull rope; 61, connecting part; 62, socket; 63, buckle; 7, plug rod; 71, bump; 72, guide slope; 70, push block; 8, driving assembly; 81, driving rod; 82, driving source; 9, reset spring; 101, first sensor; 102, second sensor; 103, baffle. DETAILED DESCRIPTION

[0044] The following is combined with Figure 2-11 This application is described in further detail.

[0045] The present application embodiment discloses an eel screening and lifting device. Figure 2 An eel screening and lifting device comprises a lifting frame 1, a lifting frame 2 and a receiving pool 3. The lifting frame 1 comprises two parallel guide rails 11, and a lifting device is installed on the upper ends of the two guide rails 11, and the lifting device is a winch. It also comprises a receiving pool 3, a receiving pool 4 and a conveying pipe 5 connected to the receiving pool 4. The lower end of the lifting frame 1 is fixedly installed in the receiving pool 3, and the upper end of the lifting frame 1 is close to the receiving pool 4. The pull rope 6 of the winch is connected to the lifting frame 2, and the lifting frame 2 is installed on the two guide rails 11 in an upward and downward sliding manner.

[0046] Reference Figure 3The lifting frame 2 includes an outer frame 21 and an inner frame 22 sleeved in the outer frame 21. The outer frame 21 contacts the guide rail 11. A pulley that slides in contact with the guide rail 11 may be connected to the outer side of the outer frame 21. Part of the inner frame 22 extends out of the outer frame 21, and a water-permeable hole 221 is provided on the outer peripheral side of the inner frame 22 that extends out of the outer frame 21.

[0047] Reference Figure 4 The lower end of the side wall of the inner frame 22 is provided with an opening 222. When the inner frame 22 is sleeved in the outer frame 21, the outer frame 21 blocks the opening 222 of the inner frame 22. The pull rope 6 of the winch is connected to the upper end surface of the inner frame 22. The outer frame 21 is connected to a connecting block 212. A connecting rod 211 is connected between the outer frame 21 and the connecting block 212. The connecting block 212 is located above the inner frame 22. The connecting block 212 is provided with a through hole. The pull rope 6 passes through the connecting block 212 through the through hole. The connecting block 212 is detachably connected to the pull rope 6.

[0048] The pull rope 6 is provided with a connecting portion 61, which is made of a hard material, such as plastic, metal or wood. The connecting block 212 is plugged with the plug rod 7, and the connecting block 212 is provided with a first installation groove for the plug rod 7 to be slidably installed. The connecting portion 61 of the pull rope 6 is provided with a plug hole 62 for the plug rod 7 to be plugged in. When the plug rod 7 is plugged into the plug hole 62, the outer frame 21 is also connected to the pull rope 6.

[0049] When the plug rod 7 is inserted into the socket 62, the inner frame 22 is sleeved into the outer frame 21, and the outer frame 21 blocks the opening 222 of the inner frame 22, so that the accumulated water in the receiving pool 3 is not easy to enter the lifting frame 2. If there is a lot of water in the lifting frame 2, it can be discharged from the water-permeable hole 221. When the lifting frame 2 is lifted by the lifting equipment to near the receiving pool 4, the plug rod 7 can be manually pulled out to make the plug rod 7 leave the pull rope 6, and the outer frame 21 gradually slides downward. The inner frame 22 has an intercepting effect on the connecting block 212 so that the outer frame 21 cannot completely leave the inner frame 22, and the opening 222 of the inner frame 22 is fully opened.

[0050] Reference Figure 5 Two interception plates 213 and a bottom plate 215 are installed at the upper end of the outer frame 21. The bottom plate 215 is fixedly installed on the upper edge of the outer frame 21. The two interception plates 213 are installed on both sides of the bottom plate respectively. One end of the bottom plate 215 and the interception plate 213 is attached to the outer wall of the inner frame 22. Two shielding plates 41 are installed at the upper edge of the receiving pool 4. The interception plates 213 and the shielding plates 41 are parallel to each other.

[0051] Reference Figure 5 and Figure 6, a baffle 12 is slidably installed on the side wall of the lifting frame 1 close to the receiving pool 4, one side of the baffle 12 is attached to the side wall of the shielding plate 41 close to the lifting frame 2, and a push rod 13 is connected to the side of the baffle 12 facing away from the receiving pool 4, and the outer side wall of the outer frame 21 has a protrusion 216. When the lifting frame 2 is lifted upward until the end of the intercepting plate 213 away from the inner frame 22 contacts one side of the baffle 12, the push rod 13 abuts against the protrusion 216. At this time, the baffle 12 is at the lowest position, and the opening 222 of the inner frame 22 is not close to the receiving pool 4. The lifting frame 2 continues to move upward so that the opening 222 of the inner frame 22 is close to the receiving pool 4, and the baffle 12 moves with the movement of the lifting frame 2.

[0052] The baffle plate 12 blocks the eels, and all the eels can enter the receiving pool 4. The weight of the baffle plate 12 is transferred to the outer frame 21 through the push rod 13, which also increases the weight of the outer frame 21, so that the outer frame 21 can slide downward more smoothly.

[0053] Reference Figure 7 When the insertion rod 7 leaves the pull rope 6 and the outer frame 21 slides downward, the baffle 12 also slides downward under the action of gravity, and the baffle 12 and the interception plate 213 maintain a matching relationship. When the opening 222 of the inner frame 22 is opened, the two interception plates 213 are respectively located on both sides of the horizontal opening 222 of the inner frame 22. The cooperation between the two interception plates 213 and the upper end of the outer frame 21 guides and intercepts the eels, so that the eels can smoothly enter the receiving pool 4.

[0054] In one embodiment, referring to Figure 8 and Fig. 9 In order to enable the insertion rod 7 to automatically leave or insert into the insertion hole 62, the connecting block 212 is installed with a push block 70 and a driving assembly 8 that drives the push block to slide. When the push block 70 pushes the insertion rod 7, the insertion rod 7 partially extends out of the mounting groove. When the push block 70 leaves the insertion rod 7, a reset member that drives the insertion rod 7 back to the first mounting groove is installed in the first mounting groove.

[0055] The driving assembly 8 includes a driving rod 81 and a driving source 82 for driving the driving rod 81 to extend and retract. The driving source 82 may be an electric telescopic rod, a cylinder or a hydraulic rod, etc. The driving source 82 of the embodiment of the present application is an electric telescopic rod. One end of the driving rod 81 is fixedly connected to the telescopic end of the electric telescopic rod, and the other end of the driving rod 81 is fixedly connected to the push block 70. The connecting block 212 is provided with a second mounting groove for sliding installation of the push block 70, and the second mounting groove has a notch for the driving rod 81 to extend into. The direction in which the driving rod 81 pushes the push block 70 to slide is opposite to the sliding direction of the insertion rod 7. The reset member is a reset spring 9, which is sleeved on the insertion rod 7. A protrusion 71 is fixedly installed at one end of the insertion rod 7 close to the push block 70. One end of the reset spring 9 is fixedly installed on the protrusion 71, and the other end of the reset spring 9 is fixedly installed in the first mounting groove.

[0056] When the push block 70 leaves the insertion rod 7, the return spring 9 drives the insertion rod 7 to leave the insertion hole 62 and enter the first installation groove, the outer frame 21 is no longer connected to the pull rope 6, and the outer frame 21 and the inner frame 22 move relative to each other.

[0057] One end of the insertion rod 7 close to the push block 70 has a guide slope 72. When the driving rod 81 pushes the push block 70 close to the insertion rod 7, the push block 70 pushes the insertion rod 7 through the guide slope 72, so that the insertion rod 7 partially extends out of the first installation groove.

[0058] A first sensor is installed at the upper end of the lifting frame 1, and a second sensor is installed at the lower end of the lifting frame 1. The first sensor and the second sensor sense the position change of the lifting frame 2, thereby controlling whether the driving source 82 is turned on. When the pull rope 6 pulls the lifting frame 2 up to the receiving pool 4 near the upper end of the lifting frame 1, the driving source 82 approaches the first sensor. After receiving the signal, the first sensor drives the driving source 82 to push the push block away from the plug rod 7, and the reset spring 9 drives the plug rod 7 away from the pull rope 6, so that the outer frame 21 can slide downward under its own gravity, gradually opening the opening 222 of the inner frame 22, so that the eel enters the receiving pool 4.

[0059] When the pull rope 6 pulls the lifting frame 2 to move downward, the outer frame 21 is first in the containing pool 3, and the inner frame 22 gradually returns to the outer frame 21, and the socket 62 returns to the connecting block 212 and is connected to the first mounting groove. After the inner frame 22 abuts against the inner bottom wall of the outer frame 21, the inner frame 22 is close to the second sensor. After receiving the signal, the second sensor drives the driving source 82 to push the push block, and the push block 70 pushes the push rod 13 to extend out of the first mounting groove and plug into the socket 62, so that the inner frame 22 and the outer frame 21 are connected together again through the pull rope 6.

[0060] In one embodiment, referring to Fig.10 The lower end of the connecting rod 211 is installed in the middle of the outer frame 21. The connecting rod 211 passes through the inner frame 22 and is connected to the pull rope 6. The connecting rod 211 is coaxial with the inner frame 22. A baffle 103 is arranged on the outer peripheral side of the connecting rod 211, and the baffle 103 is spirally distributed along the length direction of the connecting rod 211. When the eel crawls in the inner frame 22, it contacts the baffle 103. When the insertion rod 7 leaves the pull rope 6 and the outer frame 21 gradually moves downward under its own power, the movement of the connecting rod 211 will also disturb the eel. The crawling of the eel can exert pressure on the baffle 103 and drive the outer frame 21 to move downward, thereby accelerating the downward movement of the outer frame 21.

[0061] Reference Fig.11 The inner frame 22 is provided with a clearance hole for the connecting rod 211 and the blocking piece 103 to pass through. When the connecting rod 211 gradually moves downward, the spiral blocking piece 103 blocks the through hole, so that the eel will not drill out of the clearance hole.

[0062] The pull rope 6 is detachably connected to the inner frame 22. A buckle 223 is installed on the inner frame 22. One end of the pull rope 6 is connected to a buckle 63. The pull rope 6 is connected to the buckle 223 of the inner frame 22 through the buckle 63, which is also convenient for people to disassemble.

[0063] When the inner frame 22 is separated from the pull rope 6, the inner frame 22 is rotated and installed in the outer frame 21 with the connecting rod 211 as the rotation center. The outer peripheral side of the inner frame 22 is distributed with bristles 224, and the upper end surface of the outer frame 21 is provided with a guide port 217, and the inner frame 22 is in contact with the connecting block 212. The inner frame 22 is rotated, and the bristles 224 can clean the inner wall of the outer frame 21. People can directly clean the inner wall of the inner frame 22. After the inner frame 22 slides upward, the opening 222 of the inner frame 22 is connected with the guide port 217, and the sewage in the inner frame 22 is discharged, and the sewage enters the outer frame 21. The outer frame 21 is provided with a water outlet, and the outer frame 21 is also equipped with a plugging member for blocking the water outlet, and the plugging member is a plugging block 218, and the plugging block 218 is installed on the hole wall of the water outlet with a sealing thread. The water outlet is opened only when cleaning the inner and outer frames 21.

[0064] The implementation principle of the eel screening and lifting device in the embodiment of the present application is as follows:

[0065] When the lifting frame 2 receives the eels in the breeding pond, it is located in the containing pond 3. The water in the breeding pond flows into the inner frame 22 and can overflow from the water-permeable hole 221 into the containing pond 3. However, the accumulated water in the containing pond 3 is not easy to enter the inner frame 22, so that the environment of the eels during transportation can be maintained. When the lifting frame 2 rises to the upper end of the lifting frame 1, the outer frame 21 can slide downward to open the opening 222 of the inner frame 22, and the eels in the inner frame 22 can smoothly enter the receiving pond 4 and then enter the eel screening device.

[0066] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An eel screening and lifting device, comprising a lifting frame (1), a lifting frame (2) slidably mounted on the lifting frame (1), a holding pool (3) and a receiving pool (4), wherein a lifting device is mounted on the upper end of the lifting frame (1), the lower end of the lifting frame (1) is located in the holding pool (3), and the upper end of the lifting frame (1) is close to the receiving pool (4), characterized in that: The lifting frame (2) comprises an outer frame (21) and an inner frame (22), the inner frame (22) being sleeved on the outside of the outer frame (21), the outer frame (21) being in sliding contact with the lifting frame (1), an opening (222) being provided at the lower end of the side wall of the inner frame (22), the outer frame (21) blocking the opening of the inner frame (22), a portion of the inner frame (22) extending out of the outer frame (21), a water-permeable hole (221) being provided on the peripheral side of the portion of the inner frame (22) extending out of the outer frame (21), the pull rope (6) of the lifting device being connected to the inner frame (2 2) connection, the outer frame (21) is connected with a connection block (212), the connection block (212) is located above the inner frame (22), and the connection block (212) is detachably connected to the pull rope (6); two interception plates (213) and a bottom plate (215) are installed at the upper end of the outer frame (21), the two interception plates (213) are located on both sides of the bottom plate (215), and when the opening (222) of the inner frame (22) is opened, the two interception plates (213) are respectively located on both sides of the level of the opening (222) of the inner frame (22); A baffle (12) is slidably mounted on the upper end of the lifting frame (1), the baffle (12) is connected to a push rod (13), the outer frame (21) has a protrusion (216), and when the intercepting plate (213) contacts the baffle (12), the push rod (13) abuts against the protrusion (216); The pull rope (6) passes through the connecting block (212), the connecting block (212) is equipped with an insertion rod (7), the pull rope (6) has a plug hole (62) for the insertion rod (7) to be plugged in, when the insertion rod (7) leaves the pull rope (6), the outer frame (21) can slide downwards due to its own weight, and gradually open the opening (222) of the inner frame (22); The connecting block (212) is provided with a first installation groove for installing the plug rod (7), and the connecting block (212) is provided with a push block (70) for driving the plug rod (7) to partially extend out of the first installation groove; the connecting block (212) is provided with a driving assembly (8) for driving the push block (70) to slide, and when the push block (70) leaves the plug rod (7), a reset member is installed in the first installation groove for driving the plug rod (7) to return to the first installation groove; A connecting rod (211) is connected between the outer frame (21) and the connecting block (212), and the connecting rod (211) is coaxially arranged with the inner frame (22).

2. The eel screening and lifting device according to claim 1, characterized in that: The driving assembly (8) comprises a driving rod (81) and a driving source (82) for driving the driving rod (81) to extend and retract, the driving source (82) being mounted on the connecting block (212), and the driving rod (81) being connected to the pushing block (70).

3. The eel screening and lifting device according to claim 2, characterized in that: A first sensor (101) is installed at the upper end of the lifting frame (1), and a second sensor (102) is installed at the lower end of the lifting frame (1); when the driving source (82) approaches the first sensor (101), the insertion rod (7) leaves the pull rope (6); when the inner frame (22) approaches the second sensor (102), the insertion rod (7) is inserted into the pull rope (6).

4. The eel screening and lifting device according to claim 1, characterized in that: A blocking piece (103) is provided on the outer peripheral side of the connecting rod (211), and the blocking piece (103) is spirally distributed along the length direction of the connecting rod (211).

5. The eel screening and lifting device according to claim 4, characterized in that: The pull rope (6) is detachably connected to the inner frame (22); the inner frame (22) is rotatably mounted in the outer frame (21); bristles (224) are distributed on the outer circumference of the inner frame (22); and the outer frame (21) is provided with a water outlet and a sealing member for sealing the water outlet.

6. The eel screening and lifting device according to claim 5, characterized in that: The upper end surface of the outer frame (21) is provided with a flow guide port (217), and when the inner frame (22) is in contact with the connecting block (212), the opening (222) of the inner frame (22) is in communication with the flow guide port (217).

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