172 results about "Sprat" patented technology

The spear fishing gun with a reliable and effective retractable mechanism is provided. The spear gun consists of the gun shaft, firing device, handle (including grip) and gripped trigger, retractable spear mechanism, and the stopper of string to prevent the spear, from ramming into the retractable string device during retraction. As soon as the spear is shot and the diver sees that he misses, he presses on the spring trigger retracting string mechanism and the spear comes back to the gun. If the spear pierces the fish, the diver can now press the retractable string device to either release the string or retracts it to collect the fish. The retractable string mechanism is equipped with a large spool which allows the diver to shoot at long along with short distances. The spool does not allow the string to unwind completely and waste time to rewind. This is regulated by a controlling button. There is also a screw which adjusts spring power and regulates the speed and looseness of the string during retraction while the stopper prevents the spear from ramming into the retractable string device during retraction. The stopper is a plastic, metal, or glass ball, or it may have other shape. Diameter or section of the stopper is larger than that of the string guide of the retractable mechanism. The same screw which is used for regulating spring power also functions as the on and off button for the retractable string mechanism. The invention is suitable for both general types of the spear fishing guns: (a) the rubber-powered, or sling-type spear gun, and (b) the pneumatic spear gun, which utilizes an air-driven piston to drive the spear shaft down a rifle-like barrel.

The invention discloses a fish brace expansion-type hook, which is provided with a fishing line and a suspension ring, and is characterized in that a push pipe, a positioning cylinder, a spring, a spring retaining table, a positioning torsion spring, rotating arms, brace rods, a positioning ring and a brace rod fixing clamp are arranged, wherein the push pipe is made of a columnar hollow pipe, the positioning cylinder is sheathed on the push pipe, the spring is sheathed on the push pipe, a positioning hole is arranged on one side of the upper part of the push pipe, the upper end of the push pipe is connected with the suspension ring, the lower end of the push pipe is fixedly connected with the spring retaining table, the lower end of the spring retaining table is respectively hinged with a left brace rod and a right brace rod, the positioning ring is arranged in the positioning cylinder, the positioning torsion spring is fixedly arranged at the upper end of the outer wall of the positioning cylinder, the lower end of the positioning cylinder is respectively hinged with a left rotating arm and a right rotating arm, the left rotating arm and the right rotating arm are oppositely arranged, the upper end of the spring resists against the positioning ring, the lower end of the spring resists against the spring retaining table and the fishing line penetrates through the lower end ofthe inner hole of the push pipe and is fixedly connected with the brace rod fixing clamp. The fish brace expansion-type hook has the advantages that the structure is novel, the operation is convenient to conduct, the fishing success rate is high, the opening angle can be automatically adjusted according to the size of a fish mouth, the goal of non-return control can be realized and the like.

The invention discloses an integrated processing production line and processing technology for red fish aquatic products. The technology comprises the following steps: step 1, pretreatment; step 2, cleaning; step 3, slicing; 4, removing burrs; and step 5, freezing. The technology is safe and reliable. Through cooperation of a conveying belt, a limiting block, a fixing rod, a first high-pressure water gun, a second high-pressure water gun, a connecting rod and a first cutter, the structure is simple, use is convenient, and red fish scales and internal organs are cleaned and removed; through thecooperation of a first hydraulic cylinder, a second cutter, a material collecting box, a connecting shaft and a stop block, the removal and collection work of the heads of the red fishes is realized,and the use is convenient; through cooperation of a second hydraulic cylinder, a pushing block, a supporting rod, a rotating door and a spring, the purpose of cleaning scales and internal organs of the red fishes out of the rack is achieved, the rack is convenient to clean, and the use is convenient. According to the invention, an adhesive is used for adhering the damaged parts of the bodies of the red fishes, and the integrity and attractiveness of the processed red fishes are improved.

A combination fishing net and weight scale with length measuring ruler. The weight scale components are incorporated at a distal end of the handle of the fishing net opposite the end incorporating the net basket. A fish may be retained in the net basket and the distal end of the handle is held up to allow the major portion of the handle and the fishing net basket to extend downward under gravity. The weight of the fish is shown on an indicator positioned in the end (movable) component of the handle that shows through an aligned aperture on the main (fixed) handle component. An internally fixed spring extends between the movable component and the fixed component of the handle. Alternately, a solid state electronic scale may be used in the same position. A length measuring device may be positioned along the length of the handle.

A fishing hook assembly that is either self-setting or initiated upon the fisherman setting the hook. A torsion spring placed at the head of the assembly which is interconnected by two shafts that are terminated by hooks. The hooks used on the first shaft termination can consist of a single hook, treble hook, or jig hook. The first shaft also consists of a latch placed at the end of the selected hook before the hook bend. The shafts are bent outward at 15 to 30 degrees at the torsion spring to allow closer proximity when compressed.The second shaft terminates with a single hook element and is the shaft where the release element is slide onto the shaft adjacent to the latch. The release element has a connection point where the fishing line is directly connected to the release element. The torsion spring is compressed bringing the first and second shafts together with the release element on the second shaft slide onto the latch located at the hook bend on the first shaft. The fishing assembly is engaged by the fish striking the assembly or by the fisherman setting the hook which slides the release element forward off the latch which expands the assembly.

The invention relates to an onboard electric-control fish-water automatic separation and sorting apparatus and a separation method thereof. The separation apparatus comprises a fish inlet channel, a fish-separating box body, a fish outlet channel, filtering rollers, a drainage channel, balance weight blocks, a support device and an electric control device; the filtering rollers are arranged at thelower part of the inner part of the fish-separating box body and are a plurality of parallel rotatable cylindrical rollers; the support device comprises a box body base, spherical universal joints, spring shock absorbers and a base support frame; the box body base is arranged at the bottom of the fish-separating box body; the lower end of the box body base is provided with the balance weight blocks which are made of heavy metal; the box body base is connected with the base support frame through the spherical universal joints and the spring shock absorbers; and the spherical universal joints are positioned at the upper ends of the spring shock absorbers. The separation apparatus can maintain a certain horizontal state on a swinging fishing boat and can continuously and normally work. In addition, whether fish bodies are accumulated to cause blocking or not can be monitored in real time, and corresponding measures are automatically taken to dredge the accumulated fish bodies. Human intervention is not needed, and the working efficiency is improved.

The invention discloses a crayfish sorting device. The crayfish sorting device comprises a rack, a driving motor, and a screening mechanism, the screening mechanism includes a chain transmission mechanism, a pushing mechanism, and an incoming material conveying rail, the chain transmission mechanism includes a drive sprocket, a chain, and a driven sprocket, and the drive sprocket is connected withthe driving motor; the pushing mechanism includes a fixing plate, a hinge shaft, a torsion spring, and a pushing frame, one end of the torsion spring is mounted on the fixing plate, and the other endof the torsion spring is mounted on the pushing frame; a guide groove serving as a crayfish moving channel is also formed in the incoming material conveying rail, and a concave-convex pattern for passing a crooked crayfish tail part but not a head part is also arranged on the incoming material conveying rail; and a convex part is arranged on the pushing frame. A mechanical transmission screeningmethod is adopted, automatic removal or reversal action of crayfish in the guide groove is completed through the matching of the convex part and the concave-convex pattern, and by adopting the combination mode of chain transmission and guide groove screening, the production efficiency during incoming material screening operation of crayfish head and crayfish tail is greatly improved.

The invention relates to an automatic fishing float with a supporting block. The automatic fishing float comprises a floating rod casing pipe, a triggering floating rod, a triggering floating rod rubber band, a floating cylinder fixing pipe, a fishing rubber band, a triggering swing arm and a fixed seat, wherein a triggering floating rod ferrule is arranged at the upper end of the triggering swingarm and sleeves the upper end of the triggering floating rod; a swing arm mounting slot is formed in the fixed seat; a fishing rubber band clamping ball is arranged on the fishing rubber band; a fishing rubber band clamping ball clamping block, a fishing rubber band clamping ball clamping block supporting spring and a fishing rubber band clamping ball clamping block limiting block are arranged inthe swing arm mounting slot; and a fishing rubber band clamping ball right clamping head is arranged on the triggering swing arm. The lower end, connected with the triggering floating rod rubber band, of the fishing rubber band is tied to a fish wire, when fish is hooked to pull the fish wire, the triggering floating rod rubber band is pulled by the fish wire to drive the triggering floating rodto move downwards, the upper end of the triggering floating rod is separated from the triggering floating rod ferrule, the limitation on the fishing rubber band is released by the triggering swing arm, and the fishing rubber band shrinks, so as to realize automatic fishing.

The invention relates to a net-free sound wave fishing method and device, and mainly relates to the field of aquatic product fishing. The invention provides the net-free sound wave fishing method. The method comprises the following steps of: dragging a plurality of sound wave generating modules to form a semi-enclosed sound wave array in the operation of a power driven boat, driving and gathering fish schools by using the sound wave array, driving the fish schools to a preset fixed area with a solid net, and carrying out fishing by the solid net in the area. The invention further provides a net-free sound wave fishing system. The net-free sound wave fishing system comprises the power-driven ship 1, the sound wave units 2, towing mooring ropes 3 and the fixing net 4, wherein each sound wave unit 2 comprises an upper cover plate 5, a cylindrical bin barrel 6, an electromagnet 7, a fixing block 8, an electromagnet fixing plate 9, a limiting column 10, an electromagnet return spring 11, a knocking head 12, a sound production plate 13, an elastic sealing mechanism 14, a return spring 15, a storage battery 16, a knocking control module 17, a control cabinet 18, a ship-shaped floating body 19, a sound wave unit pull cable 20 and the like.

The invention discloses a land and water silk screen launching gun, which comprises a launching body and a gun body, wherein the launching body comprises a cylindrical center body; the front end of the center body is processed into a spline shape along an axial direction, i.e., the front end is provided with key slots and a spline; a flying block is installed in each key slot; the extruded front side surface of the center body is provided with mortices; an excircle is provided with a positioning ring; one end of each flying block is provided with a tenon; each tenon is embedded into each mortice of the center body and can freely slide along an axial direction in each key slot and each mortice; the inner side of the middle of each flying block is provided with a bulge loop; when the right end of each flying block is completely embedded into each mortice, the bulge loop is clamped on the left side end surface of the center body; and the gun body comprises a gun barrel, a long hole, an elastic clip, a firing device, a fishing line gun, a spring, a gun handle, a hand lever and a trigger. The land and water silk screen launching gun is enough in accumulation energy and is safe and stable. After the lunching body is lunched, a silk screen is opened to capture fishes in water and birds in the air, and capture efficiency can be greatly improved.

The invention discloses a gun for launching a fishing net. The gun comprises a launching body and a gun body, wherein the launching body comprises a central body (1); 4-8 grooves are axially formed inthe outer side of a cylinder at the front end of the central body (1); sliding chutes (10) are formed in two sides of each groove; a flying claw (14) is arranged in each groove; a positioning ring (2) is arranged at the rear part of the central body (1); the diameter-reduced part of the rear end part of the positioning ring (2) is in contact with a corresponding component of the gun body; and thegun body comprises a gun barrel (19), a long groove (20), a safety plug (21), a firing device (22), a fishing line wheel (23), an energy storage spring (24), a gun handle (25), a trigger (26), an elastic clamp (27) and a handle (28). The gun for launching the fishing net is sufficient in energy, safe and stable; after the launching body is launched, all the flying claws (14) can be separated fromthe central body (1) and fly outwards; a silk screen (12) is opened; fishes in water at a near position and a far position are captured; and the fishing efficiency can be greatly improved.

The invention relates to a hydraulic fishing tool. In the well drilling process, complicated underground accidents that a drilling tool often gets stuck often happen; especially under some complicatedgeological conditions, a part of a sleeve is severely worn in the horizontal well section of an abnormal hole, a fish falling accident and the like are caused finally, in the well completion loggingprocess, the common accident that a steel wire is broken and the like can happen. Researches shown that the common fishing tool is fixed in diameter and can only fish some underground fallen objects of a fixed size, and the function of the fishing tool has great limitation. The hydraulic fishing tool is designed to solve the problems and can fish fallen objects within a certain size range. The hydraulic fishing tool mainly comprises fishing jaws, springs, a hydraulic groove, hydraulic pushing blocks, a drilling fluid flow channel, retaining keys and the like, wherein the fishing jaws are installed on a fishing tool outer cylinder through the retaining keys. The hydraulic power provided by the drilling fluid is utilized to push the hydraulic pushing blocks to slide, sliding of the hydraulicpushing blocks drives and controls the fishing jaws to move, and then underground fallen objects are fished.

The invention discloses a water surface dead fish salvaging device for a fish unloading wharf. The water surface dead fish salvaging device comprises a box. An L-shaped connection plate is arranged onthe right side of the top of the box, and a buffer spring is arranged on one side of the bottom of the connection plate. A fixed plate is arranged at the bottom of the buffer spring. Two first extending plates and two second extending plates are arranged at the top and in the middle of the left side inner wall of the box correspondingly and are all arranged obliquely. Two distribution rods are arranged in the middle of the left side inner wall of the box. Appropriate water flow striking angles to a first blade and a second blade are ensured, gravitational potential energy of water flow is fully utilized, insufficient rotation of the blades due to large-area falling of the water flow is avoided, salvaging efficiency of dead fish is improved, discharged water can wash the interior of a groove while lubrication is conducted between the dead fish and the groove, and blocking is effectively prevented when the dead fish is collected.

The invention discloses a belly-breaking back-cutting fish-killing all-in-one machine. The machine comprises a machine frame, a fish inlet, a fish outlet, a motor, a gearbox, a blade adjustment mechanism and a descaling mechanism; the fish inlet is arranged in side end of the upper middle part of the machine frame, and the fish outlet is arranged in one end opposite to the fish inlet in the machine frame; the side end of the motor is connected to the side end of the lower middle part of the machine frame, the middle of the machine frame is provided with a supporting plate, the gearbox is arranged at the lower end of the supporting plate, the motor is connected with the gearbox by a belt, a gear shaft in the gearbox passes through the supporting plate, the middle part of the blade adjustment mechanism is connected to the supporting plate, the blade adjustment mechanism is located on the side of the fish outlet, and the motor is connected with the blade adjustment mechanism by a belt; and the descaling mechanism is arranged on the gear shaft, the descaling mechanism includes bionic spring groups and bionic fish scale scrapping disk groups, and four bionic spring groups, two bionic fish scale scraping disk groups and a movable blade are arranged. The machine can target the different types, different shapes and sizes of fish for removing scales, breaking bellies and removing intestines.

A landing net that has an integral bonker installed in its handle. The bonker can be removed as needed to stun a fish. When done, the bonker can be reinstalled in the net's handle for later use. The bonker is designed to fit inside the handle of the net. The bonker has a weighted head, a shaft, a spring-loaded locking button in the shaft, a handle, and an optional lanyard. In use, the user presses the spring-loaded locking button until it is below the height of the handle. The user then can withdraw the bonker and use it to stun a fish. When done, the bonker can be reinserted into the handle of the net, the button can be depressed and the bonker can then be pushed up into place until the spring-loaded locking button pops up to secure the bonker in the handle.

The invention provides aback and belly scaling device of a fish killing machine which comprises a device base and a frame arranged on the device base, a fish inlet is formed in one side of the device base, a fish passing channel matched with the fish inlet is formed in the device base, a belly scaling mechanism is arranged between the fish inlet and the fish passing channel, and a back scaling mechanism is arranged on the frame. The back scaling mechanism comprises guide mechanisms arranged between the frame and the device base on the two sides of the fish passing channel, each guide mechanism comprises a transmission rod arranged downwards on one side of the frame and a guide rod arranged downwards on the other side of the frame, a power steering mechanism is arranged on each transmission rod, a lifting mechanism is arranged on each guide rod, and the lifting mechanisms are arranged on the lifting mechanisms. A scaling mechanism is arranged between the power steering mechanism and the lifting mechanism, the transmission rod is sleeved with a first compression spring connected with the power steering mechanism, and the guide rod is sleeved with a second compression spring connected with the lifting mechanism. The invention can be tightly attached to the fish back and the fish belly, and fish scales at the two positions can be better cleaned.

The solution discloses a transport box in the field of fish transportation. The transport box comprises a water tank, a refrigeration tank and a fish food tank, wherein the fish food tank is located in the refrigeration tank, the refrigeration tank and the fish food tank both communicate with the water tank, a sieve plate is arranged between the water tank and the refrigeration tank, the fish foodtank penetrates the sieve plate and is buckled with the top of the refrigeration tank, the sieve plate is evenly distributed with refrigeration pipes, a water pumping pipe is connected between the water tank and the refrigeration tank in a communication manner, a press rod and a fixing rod are arranged in the fish food tank, the fixing rod is fixedly connected with the fish food tank, the press rod penetrates the fixing rod, the fish food tank and the refrigeration tank, the bottom end of the press rod is provided with a baffle, and a return spring is arranged between the fixing rod and the baffle. The method for transporting sturgeon with the transport box comprises the following steps: (1) putting the sturgeon in a temporary-rearing pond without food for 3-5 days before transportation,and setting a water temperature to be 8-11 DEG C; (2) anesthetizing the sturgeon with an appropriate amount of an anesthetic at 1 hour before transportation, and filling the water tank with 8-11 DEG Cwater; and (3) controlling the water temperature in the water tank at 13-15 DEG C, controlling dissolved oxygen to be 8 mg / L, and controlling ammonia nitrogen to be less than 0.01 mg / L. The solutioncan improve the survival rate of the sturgeon during transportation.

The invention provides a dried fish airing device which comprises a hanging hole, a central shaft, a first right transverse frame, tip cones, springs, a second right transverse frame, a third right transverse frame, a first left transverse frame, a second left transverse frame and a third left transverse frame; the first right transverse frame, the second right transverse frame, the third right transverse frame, the first left transverse frame, the second left transverse frame and the third left transverse frame are distributed on the two sides of the central shaft and are of hollow structures and form a structure shaped like a Chinese character 'feng' with the central shaft, each transverse frame is internally provided with a spring, one end of each spring is connected with the corresponding transverse frame, the other end of each spring is connected with the corresponding tip cone, the tip cones can be stretched and contracted in the transverse frames, and fishes of different sizes can be strutted open; the length of the second right transverse frame and the second left transverse frame is larger than that of the first right transverse frame, the third right transverse frame, the first left transverse frame and the third left transverse frame, and it is more beneficial for the dried fish airing device to be fully attached to the fish.

A fishing device includes a casing and a main spring positioned therein. A trigger spring is also positioned in the housing and a plate is interconnected to adjacent ends of the two springs. The device includes a primary latch operatively coupled to the casing and movable between a normally restricting configuration that normally holds the main spring in a compressed configuration and a releasing configuration. A latch release member is coupled to the trigger spring and the primary latch for moving the primary latch to the releasing configuration when the trigger spring is extended, say by the strike of a fish on a line coupled thereto. At the releasing configuration, the primary latch allows the main spring to decompress and this action sets a hook in a fish. When extended, the main spring absorbs shocks caused by a fish's movements while being reeled in.

The invention discloses an oxygenation device with a feed throwing function for fish culture. The device comprises a box body, a feed storage chamber and a bait storage chamber are arranged in the box body, the feed storage chamber is filled with an oxygenating agent, a detachable balancing weight is arranged on the lower wall of the box body, and an oxygen supply mechanism for supplying oxygen is arranged on the box body. The oxygen supply mechanism comprises a mounting box fixedly connected to the side wall of the box body, an opening is formed in the side wall of the mounting box in a penetrating mode, the inner wall of the mounting box is elastically connected with a connecting plate through a first spring, the side wall of the connecting plate is fixedly connected with a sealing plug, and the sealing plug is located in the opening. According to the device, oxygen supply treatment can be carried out on the deepwater area in the fishpond, the oxygen content of water in the deepwater area is effectively improved, a traditional manual throwing mode is replaced, the labor intensity of workers is reduced, the oxygen content of water in the deepwater area in the fishpond can be ensured, and normal growth of fishes living in the deepwater area is facilitated.

The invention discloses a timed feeding fish culture box. The timed feeding fish culture box comprises a box body, a water storage tank is fixedly connected to the outer wall of the box body, a drip nozzle located on the upper side of the water storage tank is connected to the outer wall of the box body, a piston plate is slidably arranged in the water storage tank, a reset spring is fixedly connected between the piston plate and the inner bottom wall of the water storage tank, a connecting rod extending to the outer side of the water storage tank is fixedly connected to the lower side wall of the piston plate, a vertical plate is fixedly connected to the end of the connecting rod, a material storage tank is formed in the upper side of the box body, a discharging pipe located on the upper side of the box body is connected to the lower side wall of the material storage tank, a transverse plate is slidably inserted into the discharging pipe, the outer wall of the transverse plate is sleeved with a retractable spring. According to the timed feeding fish culture box, automatic feeding and sewage discharging are achieved through continuous water dripping of the drip nozzle and triggering of movement of the vertical plate when the water amount reaches a certain amount, the water is pumped back within a certain time, the feeding and sewage discharging processes are stopped, and control over the feeding time and the sewage discharging time is achieved.

The invention provides a spring fishing pole capable of enabling fished fish to pop out of the water surface automatically. A fishing float above a fish book on an existing fishing pole is replaced by an extension spring which is high in resilience, when a fish bites the fish hook, a downward force is applied onto the extension spring, and the fish can be popped out of the water surface by reactive force of the extension spring. The spring fishing pole is simple in structure, convenient to operate, economic, practical and more humanized.

The invention provides a self-lifting fishing device for fishing based on elastic limiting, and relates to the technical field of fishing gears. The self-lifting fishing device for fishing based on elastic limiting comprises a shell, wherein a buoy is fixedly connected to the top of the shell; a lifting plate is slidably connected to the interior of the shell; a first spring is fixedly connected to the top of the lifting plate; a rotating shaft is rotatably connected to the interior of the lifting plate; gears are fixedly installed on the peripheries of the left and right sides of the rotatingshaft; racks are fixedly installed on one sides of the gears in the shell; and holding rods are rotatably connected to the left and right ends of the rotating shaft. According to the self-lifting fishing device for fishing based on elastic limiting, a fishing line can automatically lift a fishhook to hook a fish, a fisherman does not need to observe the change of the buoy all the time, visual fatigue is avoided, the automatic lifting time of the fishhook can be precisely controlled, and the success rate of fishing is increased.

The invention discloses an artificial fish nest for fishes capable of laying viscous eggs and a manufacturing method of the artificial fish nest. The artificial fish nest comprises a conical artificial fish nest shell, a fish nest frame, an artificial fish nest base, a non-slip mat, a baffle, a threaded column, a first self-locking nut, a threaded hole, a second self-locking nut, a fixing frame, an elastic piece, a rotating shaft, rotating balls, a rotating hole, a rotating rod, a fixing rod, a compression spring and a rotating bolt. The artificial fish nest base is bonded to the bottom of theconical artificial fish nest shell; the fixing frame is welded to the top of the conical artificial fish nest shell, and the top of the fixing frame is sleeved with the threaded column. According tothe artificial fish nest for the fishes capable of laying the viscous eggs and the manufacturing method of the artificial fish nest, assembly type installation and manufacturing are adopted, a user can carry and store the artificial fish nest conveniently, the water area where the artificial fish nest is located can be fully utilized, and meanwhile the functions of egg laying, foraging, inhabiting, sheltering and the like are achieved; the angle of the fish nest frame can be freely adjusted to adapt to different regions, and incapability of mounting and fixing due to the angle of the fish nestframe is avoided.

The invention relates to a fishing alarm, in particular to an automatic wire-loosing fishing alarm with adjustable sensitivity and a wire-returning alarming function. The fishing alarm is composed of an outer shell, a sound production element installed in the outer shell, an adjustment element, a circuit board assembly and a battery which are installed in the outer shell and a shaft which is installed in an opening hole of the wall of the outer shell and rotates along with traction of a fish wire. A spring is connected to the rotary shaft. The functions that the wire is automatically loosed, the sensitivity is adjustable, an alarm is given when the wire returning is performed and the sound volume of the alarm is adjustable are achieved. The automatic wire-loosing fishing alarm with the adjustable sensitivity and the wire-returning function has the advantages of being convenient to use, cheap and not only capable of being used for sea fishing, but also capable of being used for freshwater fishing.

The invention discloses a fish killing machine. The fish killing machine comprises a rack, an upper plate body and a lower plate body which are arranged up and down in parallel, a transmission device,a paunching cutter mechanism and a scraping plate, wherein the upper surface of the upper plate body is fixedly connected with the rack, and the upper plate body is arranged in an inclined manner andkeeps a certain included angle with the horizontal plane; a strip-shaped first through hole and a square second through hole which are communicated with each other are formed in the lower plate body;the transmission device comprises two pairs of toothed roller mechanisms, each pair of toothed roller mechanism comprises two toothed rollers, two toothed roller shafts, two couplers and two first motors; the paunching cutter mechanism comprises a second motor, a spindle, a paunching cutter and a compression spring; and the scraping plate comprises a first part and a second part which are fixedlyarranged on the lower surface of the lower plate body. The fish killing machine disclosed by the invention has the advantages that the size of a feeding channel can be regulated self according to thesize of a fish, so that fishes with different sizes can be slaughtered; meanwhile, structure is simple, and working efficiency is relatively high, so that the fish killing machine disclosed by the invention has relatively high market promotion value.

The invention discloses an anti-jumping-out fishing device for raw shrimp detection. The anti-jumping-out fishing device comprises a raw shrimp tank, a first spring, a guide wheel, a crank and a fishing net; a movable plate is movably arranged above the raw shrimp tank, the first spring is fixed at one end of a connecting plate, a fixed shaft is fixed at the inner side of the connecting plate, and the guide wheel sleeves the outer side of the fixed shaft; and an operating rod is fixed to the upper end face of the movable plate, limiting plates are connected to the two ends of a winding rod, one end of a traction rope is wound around the outer side of the winding rod, the fishing net is arranged at the lower side of a fishing frame, a fixing rod is arranged at the upper side of the fishing frame, and a fixing plate is movably installed at the other side of the fishing frame. According to the anti-jumping-out fishing device for raw shrimp detection, raw shrimps in containers of different specifications can be caught through the same device, the catching accuracy can be guaranteed, the phenomenon that the caught raw shrimps jump out can be avoided, and then the catching convenience before raw shrimp detection is improved.