Shellfish catcher and shellfish catcher method

Abstract

The present application discloses a shellfish catcher and a catch method thereof, which relates to the field of nuclear power, and includes a catcher assembly installed in the sea and providing protection for the internal structure; and a filter assembly 1 which is tiltedly arranged at the upper part of the inner cavity of the catcher assembly and performs the final filtration, and a filter assembly 2 which is tiltedly arranged at the lower part of the inner cavity of the catcher assembly and performs the initial filtration, the filter assembly 2 and the filter assembly 1 have the same structural dimensions and are arranged in a "V" shape; a drive conversion mechanism for adjusting the filter gap between the filter assembly 2 and the filter assembly 1 is arranged between the filter assembly 2 and the filter assembly 1. The shellfish can be blocked, and the probability of the shellfish adhering to the surface of the heat exchanger can be reduced, thereby improving the exchange effect of the heat exchanger, and at the same time, it also has a redundant effect; with the help of the drive conversion mechanism, multiple filter baffles can be rotated to crush and clean the shellfish inside the filter gap, so as to avoid the accumulation and growth of shellfish in the filter gap and keep the filter gap unobstructed.

Description

Technical Field

[0001] The present application relates to the field of nuclear power, and in particular to a shellfish catcher and a catching method thereof. Background Art

[0002] The shellfish catcher is one of the most important systems in a nuclear power plant and an important component of the important plant water system. The shellfish catcher is installed in the nuclear fuel plant as a pre-filter for the WCC / WES plate heat exchanger. The shellfish catcher is an online filtering and cleaning device, and its function is to intercept aquatic shellfish and other debris in the water, prevent shellfish from attaching to subsequent equipment and causing damage to subsequent equipment, and ensure the normal operation of the heat exchanger.

[0003] For example, the shellfish trap of application number CN201410354128.8 still has the following deficiencies in actual use:

[0004] The above patent mainly filters shellfish through a filter with a certain aperture, but some smaller shellfish are stuck in the filter holes. The cleaning scraper on the surface of the filter will exert pressure on the shellfish stuck in the filter holes when scraping, causing the shellfish to pass through the filter holes and then enter the outlet pipe. The single-layer filter set at the same time does not have a better filtering effect in this situation. At the same time, the cleaning scraper set in the above patent cannot clean the filter holes, resulting in a decrease in water flow. Summary of the invention

[0005] In order to improve the problem of poor filtering effect and inability to clean the filter holes, the present application provides a shellfish collector and a catching method thereof.

[0006] The shellfish catcher and the catching method provided by the present application adopt the following technical scheme:

[0007] A shellfish trap including a trap assembly mounted in the sea and providing protection for the internal structure;

[0008] and a filter assembly 1 which is obliquely arranged at the upper part of the inner cavity of the trap assembly and performs the final filtration, and a filter assembly 2 which is obliquely arranged at the lower part of the inner cavity of the trap assembly and performs the initial filtration, wherein the filter assembly 2 has the same structural dimensions as the filter assembly 1 and together forms a "V"-shaped arrangement, the trap assembly comprises a shell, both ends of the shell are detachably provided with side plates, the upper part of the shell side wall is connected and fixed with a clean water discharge pipe corresponding to the filter assembly 1, the shell side wall is located at the lower end of the clean water discharge pipe and is connected and fixed with a seawater inlet pipe corresponding to the filter assembly 2, and the middle part of the lower end of the shell corresponding to the filter assembly 2 and the middle part of the shell away from the clean water discharge pipe are both connected and fixed with a sewage pipe;

[0009] A drive conversion mechanism for adjusting the filter gap between the filter assembly 2 and the filter assembly 1 is provided between the filter assembly 2 and the filter assembly 1, the drive conversion mechanism comprising a driven gear 2 rotatably provided on both sides of the V-shaped groove, a central axis plate is fixedly provided in the middle of the driven gear 2 through a central axis column, a movable plate 1 is rotatably provided at both ends of the central axis plate, a movable plate 2 is rotatably provided at one end of the movable plate 1, a movable plate 3 is rotatably provided at one end of the movable plate 2, and a rack is rotatably provided at one end of the movable plate 3;

[0010] A waterproof motor for driving the drive conversion mechanism is arranged outside the collector assembly, the output shaft of the waterproof motor movably passes through one side plate thereof and the waterproof motor is fixed to the surface of the side plate, and a V-shaped groove is provided on the side of the side plate facing the inside of the shell.

[0011] By adopting the above technical solution, the filter assembly 2 has the same structural dimensions as the filter assembly 1 and together forms a "V"-shaped arrangement, which can filter the seawater twice, greatly increasing the separation effect of seawater and shellfish. At the same time, the shellfish inside the filter gap can be squeezed and crushed to achieve the effect of dredging, effectively improving the separation effect of seawater and shellfish in the device and increasing the exchange effect of the heat exchanger. The driven gear 2 realizes linear motion through the cooperation of the movable plate 1, the movable plate 2, the movable plate 3 and the rack, and then the linear movement of the rack causes several filter baffles to rotate to change the filter gap;

[0012] The waterproof motor can provide driving force for the drive conversion mechanism. At the same time, the two sewage pipes can clear the shells in the two spaces inside the shell to prevent the accumulation of shells inside the shell and affect the flow of seawater, and to prevent shells from parasitizing inside the shell. At the same time, the waterproof motor needs to work regularly to improve the separation and filtration effect. At the same time, the sewage pipe also realizes regular discharge.

[0013] Preferably, the collector assembly also includes a sealing seat 1 fixed at the upper right corner of the shell cavity, a sealing seat 3 fixed at the middle of the left side of the shell cavity, and a sealing seat 2 fixed at the lower right corner of the shell cavity, and arc grooves are provided on both sides of the sealing seat 3, the sealing seat 1 and the sealing seat 2, and an arc surface is provided between the two arc grooves of the sealing seat 3, the sealing seat 1 and the sealing seat 2, and a flow gap for seawater to flow through is provided between the two arc grooves.

[0014] By adopting the above technical solution, after the sealing seat 1, the sealing seat 3, the sealing seat 2, the filter assembly 1, the filter assembly 2 and the shell are installed, the shell is divided into three independent spaces. Therefore, it is necessary to seal between other structural parts and the side panels to realize the channel design and plan the flow direction of seawater.

[0015] Preferably, the surface of the V-shaped groove is provided with a T-shaped groove, and the middle part of both sides of the rack is fixed with a limit block sliding in the T-shaped groove.

[0016] By adopting the above technical solution, the limiting block slides in the T-shaped groove to limit and guide the rack, and at the same time, enables the rack to move in a straight line.

[0017] Preferably, a driving gear fixedly connected to the output shaft of the waterproof motor is meshed between the two driven gears 2, and a connecting shaft is fixedly passed through the two driving gears.

[0018] By adopting the above technical solution, the waterproof motor drives the two driving gears to rotate through the connecting shaft, and then drives the driven gears 2 at both ends of the filter component to rotate, thereby realizing power transmission.

[0019] Preferably, the filter assembly 1 comprises a plurality of inclined filter baffles, and a plurality of conical columns for squeezing and crushing shellfish are fixed in an array on both the upper and lower surfaces of the filter baffles.

[0020] By adopting the above technical solution, the arc-shaped setting of the filtering baffle can slow down the flow speed of seawater so that the shellfish fragments can fall better under their own gravity. The sharper end of the conical column can better crush the hard shells of shellfish.

[0021] Preferably, a driven gear 1 meshing with the rack is fixedly provided on both sides of the plurality of filtering baffles.

[0022] By adopting the above technical solution, the movement of the rack can synchronously drive multiple driven gears to rotate and then drive multiple filter baffles to rotate, so that the filter baffles on both sides rotate in the same direction to change the filter gap and achieve the crushing effect on shellfish.

[0023] Preferably, a plurality of the filter baffles are fixedly provided at one end away from the driven gear one with an elastic fork plate in contact with the surface of the adjacent filter baffle located on the side of the driven gear one.

[0024] By adopting the above technical solution, the setting of the elastic fork plate can clean the cylindrical surface of the filter baffle and also play a filtering role, avoiding the flow of seawater affected by the corners that are difficult to clean.

[0025] A shellfish trap capturing method, used for the above shellfish trap, comprising:

[0026] S01. Install the shell at the designated location, then connect the clean water discharge pipe to the exchanger pipe, and then connect the two sewage pipes to the tee pipe, so that seawater enters the shell from the seawater inlet pipe;

[0027] S02. Under normal conditions, the filtration gaps of the two filter baffles and the filtration gaps between the filter baffles and the sealing seat 3, the sealing seat 1 and the sealing seat 2 are all set to certain values, which need to be preset according to the size of local seabed shellfish, and the filtration gap of the filter component 2 is larger than the filtration gap of the filter component 1 to achieve separation;

[0028] S03. Larger shellfish are blocked by several filter baffles and conical columns of filter assembly 2, and smaller shellfish pass through the filter gap of filter assembly 2 and are blocked by several filter baffles and conical columns of filter assembly 1. When the filter baffle is located on one side of the conical column and is attached by smaller shellfish, the filter gap becomes narrow. When too many impurities are trapped in the filter gap, the amount of filtered water is reduced, the filter gap is blocked, and the filter pressure difference increases. The pressure difference sensor on the shellfish trap measures the pressure difference before and after the filter baffle. When the pressure difference reaches 0.02MPa, the waterproof motor needs to be started;

[0029] S04. The output shaft of the waterproof motor drives the driving gear and the connecting shaft to rotate, and then drives the four driven gears 2 between the filter components 1 and 2 to rotate synchronously. The driven gear 2 drives the central axis plate to rotate through the central axis column. The two ends of the central axis plate carry two movable plates 1, two movable plates 2 and two movable plates 3 to move in opposite directions, thereby pushing a group of racks in the same direction to move in the same direction, and then driving the two relative filter baffles to move in the same direction through the corresponding driven gear 1, and cooperating with the relatively arranged conical columns to crush the shellfish on the surface of the filter baffle to break them, and the shell shells will fall to the pipe mouths of their respective sewage pipes, and then be pumped out through the pump body arranged outside, and the filtered seawater will be discharged from the clean water discharge pipe.

[0030] In summary, the present application includes at least one of the following beneficial technical effects:

[0031] 1. The filter assembly 1 and the filter assembly 2 can be used to achieve secondary separation of seawater and shellfish entering the shell. The large-volume shellfish can be filtered through the initial separation of the filter assembly 1, and then the filter assembly 2 can filter the smaller-volume shellfish, thereby achieving the isolation of shellfish and reducing the probability of shellfish adhering to the surface of the heat exchanger, thereby improving the exchange effect of the heat exchanger, and at the same time, it also has a redundancy effect;

[0032] 2. With the help of the drive conversion mechanism, multiple filter baffles can be rotated to crush and clean the shellfish inside the filter gap, avoiding the accumulation and growth of shellfish in the filter gap, keeping the filter gap unobstructed, and thus ensuring the capture effect of the shellfish trap. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is the overall axonometric diagram of the present application;

[0034] Figure 2 This is a schematic diagram of the connection position between the shell and the sewage pipe of this application;

[0035] Figure 3 This is a schematic diagram of the connection between the housing and the sealing seat 1, the sealing seat 2 and the sealing seat 3 of the present application;

[0036] Figure 4 This is a schematic diagram of the positions of the sealing seat 1, the sealing seat 2 and the sealing seat 3 and the filter assembly 1 and the filter assembly 2 of the present application;

[0037] Figure 5 This is a schematic diagram of the structures of the sealing seat 1, the sealing seat 2 and the sealing seat 3 of the present application;

[0038] Figure 6 This is a schematic diagram of the installation positions of the side panel, filter assembly 1, and filter assembly 2 of the present application;

[0039] Figure 7 It is a cross-sectional schematic diagram of the filter assembly 1 and the filter assembly 2 and the side plate of the present application;

[0040] Figure 8 This is a schematic diagram of the internal structure connection of the filter component 1 and the filter component 2 of the present application;

[0041] Fig. 9 A schematic side view of the structural connection of the drive conversion mechanism of the present application;

[0042] Fig.10 This is a schematic diagram of the connection between the coupling shaft and the driving gear of the present application;

[0043] Fig.11 This is a schematic diagram of the rack and side plate of the present application being separated.

[0044] Reference numerals: 100, trap assembly; 101, housing; 102, clean water discharge pipe; 103, seawater inlet pipe; 104, side plate; 105, sewage pipe; 106, sealing seat 1; 107, sealing seat 2; 108, sealing seat 3; 109, arc groove; 110, V-shaped groove; 111, arc surface; 112, T-shaped groove; 113, flow gap; 114, positioning plate;

[0045] 200, waterproof motor;

[0046] 300, filter assembly 1; 301, filter baffle; 302, conical column; 303, driven gear 1; 304, elastic fork plate; 305, filter gap;

[0047] 400, filter component 2;

[0048] 500, drive conversion mechanism; 501, driven gear 2; 502, middle shaft plate; 503, movable plate 1; 504, movable plate 2; 505, movable plate 3; 506, middle shaft column;

[0049] 600, rack;

[0050] 700, connecting shaft; 800, driving gear; 900, limiting block. DETAILED DESCRIPTION

[0051] The following is combined with Figure 1-Figure 11 This application is described in further detail.

[0052] The embodiments of the present application disclose a shellfish trap and a shellfish trapping method thereof.

[0053] Reference Figure 1-Figure 5 A shellfish trap comprises a trap assembly 100 installed in the sea and providing protection for the internal structure. The trap assembly 100 comprises a shell 101. The outer surface of the shell 101 is provided with a plurality of mounting holes and mounting seats fixed to external brackets. The side walls at the openings at both ends of the shell 101 are fixed with side plates 104 by bolts. A clean water discharge pipe 102 is connected and fixed to the upper part of the side wall of the shell 101. The clean water discharge pipe 102 corresponds to the filter assembly 1 300 and is connected to the space formed by the sealing seat 1 106, the sealing seat 3 108, the upper left corner of the shell 101 and the filter assembly 1 300. A seawater inlet pipe 103 is connected and fixed to the side wall of the shell 101 at the lower end of the clean water discharge pipe 102. The seawater inlet pipe 103 corresponds to the filter assembly 2 400. The seawater inlet pipe 103 and the sewage pipe 105 are both connected to the sealing seat 2 107, the sealing seat 3 108, the left corner of the shell 101 The space formed by the lower corner and the filter component 2 400 is connected, the drain pipe 105 is in a closed state under normal circumstances, the drain pipe 105 is connected and fixed in the middle of the lower end of the shell 101 corresponding to the position of the filter component 2 400 and the middle of the shell 101 away from the clean water discharge pipe 102, and the drain pipe 105 is connected with the space angle formed by the sealing seat 106, the sealing seat 107, the filter component 2 400 and the filter component 1 300, and the output shaft of the waterproof motor 200 movably passes through one side plate 104, and the output shaft of the waterproof motor 200 and the side plate 104 are connected by a mechanical seal to achieve a waterproof effect, and the mounting end of the waterproof motor 200 is fixed to the surface of the side plate 104 by bolts, and the side plate 104 facing the inside of the shell 101 is provided with a V-shaped groove 110 at a position relative to the filter component 2 400, the filter component 1 300 and the drive conversion mechanism 500.

[0054] Seawater first enters the space formed by sealing seat 2 107, sealing seat 3 108, the lower left corner of shell 101 and filter assembly 2 400 through seawater inlet pipe 103. Since filter assembly 2 400 is tilted, seawater will impact one end of filter baffle 301 of filter assembly 2 400 and be discharged from filter gap 305 to the space angle formed by sealing seat 1 106, sealing seat 2 107, filter assembly 2 400 and filter assembly 1 300. Smaller shellfish can pass through filter gap 305 of filter assembly 2 400 to filter larger shellfish. Shellfish of larger and smaller sizes will fall into the vicinity of the outlet of sewage pipe 105 and inside sewage pipe 105 under the action of their own gravity. Filter assembly 1 300 further filters seawater to block smaller shellfish. Subsequently, seawater is discharged from clean water outlet pipe 102 through filter gap 305 of filter assembly 1 300 to dissipate heat from heat exchanger, thereby preventing shellfish and other organisms from adhering to the surface of heat exchanger and affecting working efficiency.

[0055] Reference Figure 1-Figure 5 The collector assembly 100 also includes a sealing seat 106 integrally formed and fixed at the upper right corner of the inner cavity of the shell 101, a sealing seat 3 108 integrally formed and fixed at the middle of the left side of the inner cavity of the shell 101, and a sealing seat 2 107 integrally formed and fixed at the lower right corner of the inner cavity of the shell 101. The sealing seat 3 108, the sealing seat 1 106, and the end of the sealing seat 2 107 facing the side plate 104 are all flush with the end surface of the shell 101, so as to maintain sealing when abutting against the side plate 104. Both sides of the sealing seat 3 108, both sides of the sealing seat 1 106, and both sides of the sealing seat 2 107 are provided with arc grooves 109, and the arc grooves 109 are set to 180 degrees to achieve an abutment angle with the cylindrical end surface of the filter baffle 301. The sealing seat 3 108, The sealing seat 106 and the sealing seat 2 107 are provided with an arc surface 111 between the two arc grooves 109. The arc surface 111 of the sealing seat 106 is set to be "concave", while the arc surfaces 111 of the sealing seat 3 108 and the sealing seat 2 107 are both set to be convex. The setting of the arc surface 111 forms a filter gap 305 between different filter baffles 301 to form a filtering effect. A flow gap 113 is set between the two arc grooves 109, and seawater flows through the flow gap 113. At the same time, the width of the filter gap 305 is affected by the rotation of the filter baffle 301 to make the width smaller or larger, thereby adjusting the separation of shellfish of different sizes. The flow gap 113 is not affected by the rotation of the filter baffle 301.

[0056] The cylindrical end surface of the filter baffle 301 abuts against the inner wall of the arc groove 109 and rotates. At the same time, the flow gap 113 is set between the cylindrical end of the filter baffle 301 and the sealing seat three 108, the sealing seat one 106 and the sealing seat two 107. When the filter baffle 301 rotates, one side of the filter baffle 301 located on the side will be separated or contacted with the corresponding arc surface 111 to adjust the width of the filter gap 305 and squeeze and crush the shellfish inside the filter gap 305 to make it separate.

[0057] Reference Figure 1-Figure 5 , a filter assembly 300 is tiltedly arranged at the upper part of the inner cavity of the collector assembly 100, and the filter assembly 300 is used for the final filtration to separate the smaller shellfish. A filter assembly 2 400 is tiltedly arranged at the lower part of the inner cavity of the collector assembly 100 and performs the initial filtration. The filter assembly 2 400 has the same structural size as the filter assembly 300 and together forms a "V"-shaped arrangement. The filter assembly 300 includes a plurality of filter baffles 301 that are tilted and stacked, and the plurality of filter baffles 301 are all arranged in an arc shape, and a cylinder is fixed at one end of the plurality of filter baffles 301, and a connecting rod fixed to the middle part of the driven gear 303 is penetrated and fixed in the middle of each cylinder, and a positioning plate 114 is fixed on the inclined side edge of the V-shaped groove 110, and the connecting rod movably penetrates the positioning plate 114 (such as Figure 7 As shown in the figure, a plurality of conical columns 302 are fixed in an array on the upper and lower surfaces of the filter baffle 301, and the conical columns 302 are used to squeeze and crush the shellfish. The teeth of the rack 600 are meshed with a plurality of driven gears 303. An elastic fork plate 304 is fixed at one end of the plurality of filter baffles 301 away from the driven gear 303. The elastic fork plate 304 contacts the surface of the adjacent filter baffle 301 located on the side of the driven gear 303, and one end of the elastic fork plate 304 is set as a notch in the array to achieve the filtering effect.

[0058] The rack 600 drives several driven gears 1 303 to rotate, and then drives several filter baffles 301 to rotate with the connecting rod as the axis, and then adjusts the distance between the two filter baffles 301, so that the two filter baffles 301 move alternately to achieve the effect of moving and squeezing. The conical columns 302 on the opposite surfaces of the two filter baffles 301 are arranged alternately, and then the filter gap 305 becomes smaller, and then the shells of the shellfish are squeezed and crushed by the conical columns 302, so that the crushed shellfish falls to the mouth of the sewage pipe 105 under the action of gravity. It should be noted that under normal conditions, the filter gap 305 of the filter component 2 400 is larger than the filter gap 305 of the filter component 1 300, so as to achieve different filtering and separation accuracy. The elastic fork plate 304 can realize the cleaning of shellfish at one end of the filter baffle 301 to prevent the flow gap 113 from becoming narrow due to the attachment of shellfish and affecting the flow of seawater.

[0059] Reference Figure 4-Figure 11 A driving conversion mechanism 500 for adjusting the filtering gap 305 of the filtering component 2 400 and the filtering gap 305 of the filtering component 1 300 is arranged between the filtering component 2 400 and the filtering component 1 300. The driving conversion mechanism 500 includes a driven gear 2 501 rotatably arranged on both sides of the V-shaped groove 110. The two driven gears 2 501 are symmetrical. A central axis column 506 is fixed through the middle of the driven gear 2 501. One end of the central axis column 506 is fixed to the center position of the central axis plate 502, and the other end of the central axis column 506 is movably interlaced with the side plate 104. Both ends of the central axis plate 502 are rotatably arranged with a movable plate 1 503 through a rotating shaft, one end of the movable plate 1 503 is rotatably arranged with a movable plate 2 504 through a rotating shaft, and one end of the movable plate 2 504 is rotatably arranged with a movable plate 3 505 through a rotating shaft. One end of the three 505 is rotatably arranged through a rotating shaft and one end of the rack 600, the V-shaped groove 110 is arranged as four surfaces, and a T-shaped groove 112 is opened in the middle of the surface of the V-shaped groove 110, and one end of the T-shaped groove 112 is connected to the inside of the V-shaped groove 110, and a limit block 900 is fixed in the middle of both sides of the rack 600, and the limit block 900 slides in the T-shaped groove 112, and one end of the rack 600 extends out of the T-shaped groove 112 to provide a movable distance for the movable plate three 505 to realize the movement of the rack 600, and a driving gear 800 is meshed between the two driven gears 2 501, and the output shaft of the waterproof motor 200 is fixedly connected to the middle of the driving gear 800, and a connecting shaft 700 is fixed between the middle parts of the two driving gears 800, and the connecting shaft 700 moves away from the side of the waterproof motor 200 and penetrates into the inside of the side plate 104.

[0060] It should be noted that, because the filter assembly 1 300 and the filter assembly 2 400 are arranged in a "V" shape, the distance between the two racks 600 on one side is too far compared to the distance between the two racks 600 on the other side. Therefore, the length of the two movable plates 504 on the right side is much greater than the length of the two movable plates 504 on the other side. Figure 8 For reference, the two racks 600 on the same side move in opposite directions, and the racks 600 on the same side of the same filter assembly 1 300 move in the same direction.

[0061] The waterproof motor 200 is powered on and works, and the output shaft of the waterproof motor 200 drives the connecting shaft 700 to rotate and then drives the two driving gears 800 to rotate clockwise, the driving gear 800 rotates clockwise and then drives the two driven gears 2 501 to rotate counterclockwise, the driven gear 2 501 drives the central axis column 506 to rotate counterclockwise and then drives the central axis plate 502 to rotate counterclockwise, the central axis plate 502 drives the two movable plates 1 503 to move in opposite directions by rotating, the two movable plates 1 503 respectively drive the movable plates 2 504 connected to them to rotate and then drive the movable plates 3 505 to rotate, the movable plates 3 505 drive the racks 600 connected to them to move, and the entire drive conversion mechanism 500 realizes the conversion of rotational motion into linear motion.

[0062] Among them, the mechanical seal and the waterproof motor 200 are both existing technologies, and their principles, structures, and installation methods are not described in detail. At the same time, the outer surface of the waterproof motor 200 also needs to be provided with a protective shell resistant to seawater corrosion, which is not shown in the figure. At the same time, a microcomputer, a controller, and wires are also provided, which are not the main technologies and are not described in detail. A pressure differential sensor is built into the shellfish trap.

[0063] Reference Figure 1 A waterproof motor 200 is disposed outside the collector assembly 100 to drive the drive conversion mechanism 500 to operate.

[0064] A shellfish trap capturing method, used for the above shellfish trap, comprising:

[0065] S01. Install the shell 101 at the designated position, then connect the clean water discharge pipe 102 to the heat exchanger pipe, and then connect the two sewage pipes 105 to the three-way pipe. One of the pipes connected by the three-way pipe is connected to the external suction equipment and is normally closed under normal circumstances to prevent seawater from flowing out of the sewage pipe 105, resulting in a small discharge volume from the clean water discharge pipe 102. At the same time, seawater enters a space in the inner cavity of the shell 101 from the seawater inlet pipe 103.

[0066] S02. Under normal conditions, the filter gap 305 of the two filter baffles 301 and the flow gap 113 between the filter baffle 301 and the sealing seat three 108, the sealing seat one 106 and the sealing seat two 107 are all set to a certain value, which needs to be preset according to the size of local seabed shellfish.

[0067] S03. Larger shellfish are blocked by several filter baffles 301 and conical columns 302 of filter component 2 400. At the same time, the elastic fork plate 304 also plays a filtering role. Smaller shellfish pass through the filter gap 305 of filter component 2 400 and are blocked by several filter baffles 301 and conical columns 302 of filter component 1 300, thereby achieving separation of shellfish and seawater. At the same time, there may be shellfish stuck in the filter gap 305. The seawater after the initial filtration is located in the spatial angle formed by sealing seat 1 106, sealing seat 2 107, filter component 2 400 and filter component 1 300. At this time, the shellfish located in the spatial angle is relatively small in size and will also be filtered by the seawater. The filter assembly 300 is filtered and separated by several filter gaps 305, and then smaller shellfish are separated. When the filter baffle 301 is located on one side of the conical column 302 and is attached by smaller shellfish, the filter gap 305 will become narrow, affecting the flow of seawater. Specifically, when the filter gap 305 retains too many impurities, the filtered water volume is reduced, the filter gap 305 is blocked, and the filtration pressure difference increases. The pressure difference sensor on the shellfish collector measures the pressure difference before and after the filter baffle 301. When the pressure difference reaches 0.02MPa (the specific working pressure value can be preset according to actual needs), the switch is turned on at this time, and the microcomputer controls the waterproof motor 200 to power on through the controller and wires.

[0068] S04, the waterproof motor 200 drives the four driven gears 2 501 between the filter assembly 1 300 and the filter assembly 2 400 to rotate synchronously, and the driven gear 2 501 drives the central axis plate 502 to rotate through the central axis column 506, and the two ends of the central axis plate 502 drive the two movable plates 1 503, the two movable plates 2 504 and the two movable plates 3 505 to move in opposite directions, thereby pushing a group of racks 600 in the same direction to move in the same direction, and the limit blocks 900 on both sides of the racks 600 slide in the T-shaped grooves 112 to achieve circular rotation and linear motion, and then through the corresponding driven gears A 303 drives two relative filter baffles 301 to move in the same direction, and cooperates with the relatively arranged conical columns 302 to crush the shellfish on the surface of the filter baffle 301 to break them. The shell shells will fall to the pipe mouths of their respective sewage pipes 105 under the action of their own gravity. At the same time, the flow of seawater needs to be slow. The flow rate of seawater entering the seawater inlet pipe 103 is set at 1cm / second. The flow rate of seawater entering is set specifically according to the size of local shellfish. Subsequently, the filtered seawater is pumped out through a pump body arranged outside, and discharged from the clean water discharge pipe 102 to cool the heat exchanger.

[0069] The above are only optional embodiments of the present disclosure and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A shellfish trap, characterized in that: The invention comprises a trap assembly (100) installed in the sea and providing protection for the internal structure, the trap assembly (100) comprising a shell (101), both ends of the shell (101) being detachably fixed with side plates (104), the upper part of the side wall of the shell (101) being connected and fixed with a clean water discharge pipe (102) corresponding to the first filter assembly (300), the side wall of the shell (101) being located at the lower end of the clean water discharge pipe (102) being connected and fixed with a seawater inlet pipe (103) corresponding to the second filter assembly (400), the middle part of the lower end of the shell (101) corresponding to the second filter assembly (400) and the middle and lower part of the shell (101) away from the clean water discharge pipe (102) are both connected and fixed with a sewage pipe (105); and a filter assembly 1 (300) which is arranged obliquely at the upper part of the inner cavity of the collector assembly (100) and performs final filtering, and a filter assembly 2 (400) which is arranged obliquely at the lower part of the inner cavity of the collector assembly (100) and performs initial filtering, wherein the filter assembly 2 (400) has the same structural dimensions as the filter assembly 1 (300) and together forms a "V"-shaped arrangement; A drive conversion mechanism (500) for adjusting the filter gap (305) of the filter component 2 (400) and the filter component 1 (300) is provided between the filter component 2 (400) and the filter component 1 (300), the drive conversion mechanism (500) comprising a driven gear 2 (501) rotatably provided on the inclined side of the V-shaped groove (110), a central axis plate (502) being fixedly provided in the middle of the driven gear 2 (501) via a central axis column (506), a movable plate 1 (503) being rotatably provided at both ends of the central axis plate (502), a movable plate 2 (504) being rotatably provided at one end of the movable plate 1 (503), a movable plate 3 (505) being rotatably provided at one end of the movable plate 2 (504), and a rack (600) being rotatably provided at one end of the movable plate 3 (505); A waterproof motor (200) for driving the drive conversion mechanism (500) is arranged on the outside of the collector assembly (100); an output shaft of the waterproof motor (200) movably passes through a side plate (104) thereof and the waterproof motor (200) is fixed to the surface of the side plate (104); a V-shaped groove (110) is provided on the side of the side plate (104) facing the inside of the housing (101); The trap assembly (100) further comprises a sealing seat 1 (106) fixedly mounted at the upper right corner of the inner cavity of the shell (101), a sealing seat 3 (108) fixedly mounted at the middle of the left side of the inner cavity of the shell (101), and a sealing seat 2 (107) fixedly mounted at the lower right corner of the inner cavity of the shell (101), wherein both sides of the sealing seat 3 (108), the sealing seat 1 (106) and the sealing seat 2 (107) are provided with arc grooves (109), and the sealing seat 3 (108), the sealing seat 1 (106) and the sealing seat 2 (107) are provided with an arc surface (111) between two of the arc grooves (109), and a flow gap (113) for seawater to flow through is provided between the two arc grooves (109); The surfaces of the V-shaped grooves (110) are each provided with a T-shaped groove (112), and the middle parts of both sides of the rack (600) are fixed with a limit block (900) that slides in the T-shaped groove (112); A driving gear (800) fixedly connected to the output shaft of the waterproof motor (200) is meshed between the two driven gears (501) on the same side, and a connecting shaft (700) is fixedly passed through the driving gears (800) on the two different sides; The filtering assembly 1 (300) comprises a plurality of inclined filtering baffles (301), and a plurality of conical columns (302) for squeezing and crushing shellfish are fixed in an array on both the upper and lower surfaces of the filtering baffles (301); A driven gear (303) meshing with the rack (600) is fixedly disposed on both sides of the plurality of filtering baffles (301); An elastic fork plate (304) is fixedly provided at one end of a plurality of the filter baffles (301) away from the driven gear one (303) and in contact with a surface of an adjacent filter baffle (301) located on one side of the driven gear one (303).

2. A shellfish trapping method, used in the shellfish trap according to claim 1, characterized in that: include: S01. Install the housing (101) at a designated location, then connect the clean water discharge pipe (102) to the exchanger pipe, and then connect the two sewage pipes (105) to the three-way pipe, so that seawater enters the housing (101) from the seawater inlet pipe (103); S02. Under normal conditions, the filter gaps (305) of the two filter baffles (301) and the filter gaps (305) between the filter baffles (301) and the sealing seat three (108), the sealing seat one (106) and the sealing seat two (107) are all set to certain values, which need to be preset according to the size of local seabed shellfish, and the filter gap (305) of the filter component two (400) is larger than the filter gap (305) of the filter component one (300) to achieve separation; S03, larger shellfish are blocked by the plurality of filter baffles (301) and the conical column (302) of the second filter assembly (400), and smaller shellfish pass through the filter gap (305) of the second filter assembly (400) and are blocked by the plurality of filter baffles (301) and the conical column (302) of the first filter assembly (300). When the filter baffle (301) is located on one side of the conical column (302) and is attached by smaller shellfish, the filter gap (305) becomes narrow. When the filter gap (305) retains too many impurities, the amount of filtered water is reduced, the filter gap (305) is blocked, and the filter pressure difference increases. The pressure difference sensor on the shellfish trap measures the pressure difference before and after the filter baffle (301). When the pressure difference reaches 0.02 MPa, the waterproof motor (200) needs to be started to work; S04. The output shaft of the waterproof motor (200) drives the four driven gears 2 (501) between the filter assembly 1 (300) and the filter assembly 2 (400) to rotate synchronously. The driven gear 2 (501) drives the central axis plate (502) to rotate through the central axis column (506). The two ends of the central axis plate (502) drive the two movable plates 1 (503), the two movable plates 2 (504) and the two movable plates 3 (505) to move in opposite directions, thereby pushing a group of racks (600) in the same direction to move in the same direction, and then driving the two relative filter baffles (301) to move in the same direction through the corresponding driven gear 1 (303), and cooperating with the relatively arranged conical columns (302) to crush the shellfish on the surface of the filter baffle (301), so that the shell shells will fall to the pipe mouths of their respective sewage pipes (105), and then be pumped out through the pump body arranged outside, and the filtered seawater will be discharged from the clean water discharge pipe (102).

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