A fish-killing and bleeding machine

Abstract

This invention discloses a fish-killing and bleeding machine, comprising a frame, a fish inlet channel inclinedly arranged within the frame, a fish-pressing mechanism located in the middle of the fish inlet channel, a knife holder mechanism located above the front end of the fish inlet channel, a knife holder transmission mechanism, and a triggering mechanism located at the front end of the fish inlet channel; the bottom of the fish inlet channel is a channel support plate that can be opened downwards and closed upwards at the front end of the channel; the fish enters the channel from the rear end of the fish inlet channel located at a higher position, slides down along the fish inlet channel using its own gravity, the fish-pressing mechanism presses down on the fish body, the knife holder transmission mechanism drives the knife holder mechanism to fall, the bleeding knife on the knife holder pierces the fish gills, then the knife holder rises, the fish-pressing mechanism rises subsequently, the fish slides further along the fish inlet channel into the front end of the channel, the limiting structure at the front end of the channel allows the fish to protrude from its mouth and touch the triggering mechanism, causing the channel support plate to open downwards, expelling the fish from the fish inlet channel. This invention achieves automated fish killing and bleeding.

Description

Technical Field

[0001] This invention relates to the field of fish product processing machinery technology, and in particular to a fish killing and bleeding machine. Background Technology

[0002] China is the world's largest fishery producer, accounting for nearly 40% of global fishery output. The initial processing of fish includes cleaning, grading, gutting, scaling, eviscerating, head removal, and gutting. With the continuous improvement of people's living standards, the demand for high-quality fish protein continues to grow. Manual processing methods can no longer meet the requirements of large-scale production, making high-quality, efficient, and mechanized fish processing an inevitable requirement.

[0003] Bleeding is a crucial step in the initial processing of fish. Since live fish are not conducive to subsequent processing, bleeding must be performed first. The gills are where blood vessels are concentrated; generally, a small incision is made along the lower edge of the gill cover on both sides. After bleeding, the fish is placed in clean water to swim, allowing the blood to drain out as quickly as possible, minimizing the amount of blood remaining in the body. Bleeding reduces the fishy smell, improving the taste and quality of the meat. It also helps preserve the fish and prevents spoilage. This method is particularly suitable for immediate bleeding after catching, freezing for transport, or for processing plants and restaurants where only bleeding is required.

[0004] In China, fish killing relies entirely on manual labor, and the methods of bleeding fish depend on worker experience, lacking standardized procedures. Currently, fish processing typically requires manual bleeding followed by manual cleaning in a washing tank. This method is inefficient and labor-intensive, leaving the domestic fish killing and bleeding process in a state of "no usable machinery." There is a market demand for adaptable and practical equipment. Developing a mechanized, high-quality, and efficient fish killing device is a problem urgently needing to be solved by those skilled in the art. Summary of the Invention

[0005] This invention provides a fish killing and bleeding machine that automates the killing and bleeding of fish.

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

[0007] A fish killing and bleeding machine includes a frame, a fish inlet channel inclinedly arranged in the frame, a fish pressing mechanism arranged in the middle of the fish inlet channel, a blade holder mechanism arranged above the front end of the fish inlet channel, a blade holder transmission mechanism, and a triggering mechanism located at the front end of the fish inlet channel.

[0008] The bottom of the fish inlet channel is a channel tray that can be opened downwards and closed upwards at the front end;

[0009] The fish enters the channel from the rear end of the fish inlet channel, located at a high position, and slides down the channel using its own gravity. The fish pressing mechanism presses down on the fish's body, and the knife holder transmission mechanism drives the knife holder mechanism to fall. The bleeding knife on the knife holder pierces the fish's gills, and then the knife holder rises. The fish pressing mechanism then rises, and the fish slides further into the front end of the fish inlet channel. The limiting structure at the front end of the channel causes the fish to protrude from its mouth and touch the trigger mechanism, causing the channel tray to open downwards and discharge the fish from the fish inlet channel.

[0010] Beneficial effects

[0011] (1) The front adjustment mechanism, the cutter holder, and the rear adjustment mechanism of the channel form a set of fish size adjustment linkage mechanisms. By adjusting the position of the adjustment handle, the cutting position, the welding angle of the front adjustment plate, and the size of the feeding inlet can be adjusted in a linked manner. When the adjustment handle is pushed forward, the cutting position moves backward, the welding angle of the front adjustment plate increases, and the feeding inlet increases, which can accommodate larger fish sizes; conversely, it can accommodate smaller fish sizes. This linkage design improves the adaptability to fish sizes and simplifies the operation steps.

[0012] (2) The fish-pressing mechanism can drive the first rotating shaft to move the fish-pressing plate connected to the first top pressing rod downward under the rotation linkage of the left and right pressing rods. At the same time, it drives the second rotating shaft and the second top pressing rod to rotate and press down the fish-pressing plate. After the fish enters the designated position for killing the fish, the fish-pressing plate presses down on the fish body. The forces of the first and second top pressing rods on the fish-pressing plate, combined with the fish-pressing plate, form a stable triangle, ensuring the stability of the fish body during the killing process. At the same time, the mechanism has an adaptive effect of pressing the fish body. Through the adaptive adjustment of the tension of the long spring connecting the fish-pressing plate drive rod and the pressing rod on the same side, the height of the fish-pressing plate can be automatically adjusted for fish of different body thicknesses to adapt to the pressing needs of fish of different sizes, achieving an appropriate fish-pressing effect without damaging the fish body.

[0013] (3) The channel support plate, the channel front adjustment plate welding and the fish pressing plate respectively realize the support, envelopment and pressing of the fish body. The three parts are combined to form a complete adaptive contour channel, which realizes low damage and stable constraint of the fish body, creating favorable conditions for killing fish and bleeding action.

[0014] (4) The working process of this machine imitates the action of killing fish manually. By first positioning, then pressing and finally impacting the gills to bleed the fish in the fish inlet channel, an effective fish killing process is achieved. The kinetic energy of the fish head sliding down the channel impacts the trigger plate, triggering the transmission device to start a fish killing and bleeding cycle, thus realizing mechanized and efficient fish killing. Attached Figure Description

[0015] Figure 1 This is a perspective structural diagram of a fish-killing and bleeding machine provided in an embodiment of the present invention;

[0016] Figure 2This is a front view structural diagram of a fish-killing and bleeding machine provided in an embodiment of the present invention;

[0017] Figure 3 This is a left view of a fish-killing and bleeding machine provided in an embodiment of the present invention;

[0018] Figure 4 This is a right-side structural diagram of a fish-killing and bleeding machine provided in an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the fish inlet channel provided in an embodiment of the present invention;

[0020] Figure 6 This is a schematic diagram of the open state structure of the fish inlet channel provided in an embodiment of the present invention;

[0021] Figure 7 This is a schematic diagram of the main structure of the fish-pressing mechanism provided in an embodiment of the present invention;

[0022] Figure 8 This is a top view of the fish-pressing mechanism provided in an embodiment of the present invention;

[0023] Figure 9 This is a schematic diagram of the tool holder mechanism provided in an embodiment of the present invention;

[0024] Figure 10 This is a schematic diagram of the main structure of the triggering mechanism provided in an embodiment of the present invention;

[0025] Figure 11 This is a schematic diagram of the left-side structure of the triggering mechanism provided in an embodiment of the present invention;

[0026] Figure 12 This is a front view schematic diagram of the channel front adjustment mechanism provided in an embodiment of the present invention;

[0027] Figure 13 This is a schematic diagram of the left-side structure of the channel front adjustment mechanism provided in an embodiment of the present invention;

[0028] Figure 14 This is a top view of the channel front adjustment mechanism provided in an embodiment of the present invention;

[0029] Figure 15 This is a front view schematic diagram of the channel rear adjustment mechanism provided in an embodiment of the present invention;

[0030] Figure 16 This is a top view of the channel adjustment mechanism provided in an embodiment of the present invention. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0032] See Figure 1 A fish-killing and bleeding machine includes a frame 1, a fish inlet channel 2 inclinedly disposed within the frame, a fish-pressing mechanism 3 disposed in the middle of the fish inlet channel, a blade holder mechanism 4 disposed above the front end of the fish inlet channel, a blade holder transmission mechanism 5, and a triggering mechanism 6 located at the front end of the fish inlet channel. The front end of the fish inlet channel is located at a low position, and the rear end of the fish inlet channel is located at a high position.

[0033] After the fish-killing program is started, the knife holder is initially in its highest position. The fish enters the channel from the rear end of the fish inlet channel and slides down along the channel using its own gravity. The time it takes for the fish to slide down to the bottom of the pressure plate is equal to the time it takes for the pressure plate to fall. The pressure plate mechanism descends and presses down on the fish, fixing it in place. The knife holder transmission mechanism drives the knife holder mechanism to fall, and the bleeding knife pierces the fish's gills. Then the knife holder rises, and the pressure plate mechanism rises subsequently. The fish slides further along the fish inlet channel into the front end face of the channel. The exposed fish mouth touches the trigger mechanism, causing the lower channel tray of the fish inlet channel to open downwards, expelling the fish from the fish inlet channel. Then the channel tray rotates upwards until it returns to its original position, completing the entire fish-killing and bleeding cycle.

[0034] The fish inlet channel 2 includes an upper channel plate 21 and a channel support plate 22 arranged vertically opposite each other. The upper channel plate, fixed to the frame, forms an angle with the horizontal direction. The bottom surface of the upper channel plate is fixedly connected to the left channel plate 211 and the right channel plate 212, forming a downward-opening channel. The channel support plate includes a first sliding plate 221, a second sliding plate 222, and left and right sliding plates 223 and 224 located on either side of the first sliding plate. The second sliding plate is slightly raised relative to the first sliding plate, and along the direction of fish movement, it abuts against the first, left, and right sliding plates, forming a concave section that serves as a contoured channel enveloping and supporting the fish body. The channel support plate has a left sliding plate 225 and a right sliding plate 226 located outside the left and right sliding plates, forming an upward-opening channel. The channel support plate is designed based on the outline of the fish head, and the arc-shaped structure formed by the combination of the first, right, and left sliding plates achieves stable contact and support for the fish head. The fish inlet channel allows the fish to slide in and be supported, creating conditions for the fish-killing action.

[0035] When the channel tray and the channel top plate are assembled and closed, the left and right side plates of the channel are inserted between the left and right side plates of the channel tray, forming a closed fish inlet channel. The distance between the left and right side plates at the front end of the fish inlet channel gradually forms the shape of a fish head, and the distance at the end is connected by a channel front upper arc plate 213, which limits the fish head while allowing the fish mouth to be exposed. The fish mouth is exposed between the channel front upper arc plate 213 and the second slide plate 222 for the trigger mechanism to be activated.

[0036] At the fish inlet, the left side plate 211 and the right side plate 212 of the channel extend rearward to form a feeding inlet side plate 214, which is fixed to the bottom surface of the upper plate of the channel. The lower feeding inlet plate 227 is fixedly welded to the lower part of the feeding inlet side plate. The channel support plate is connected to the lower feeding inlet plate 227 by a hinge 2200. The channel support plate is closed or opened with the pivot of the hinge as the center of rotation. When closed, it is in the state of fish feeding and killing; when open, it is in the state of expelling the killed fish.

[0037] A window 215 is provided on the upper plate 21 of the channel. The fish pressing plate of the fish pressing mechanism 3 presses down on the fish body through the window, and the bleeding knife pierces the gills through the window.

[0038] The fish-pressing mechanism 3 includes a first shaft 31 spanning above the fish inlet channel and mounted on the frame via bearings. A fish-pressing plate drive rod 32, a pressing rod 33, and a fish-pressing plate 34 are mounted on the first shaft. One end of both the fish-pressing plate drive rod and the pressing rod is radially fixed to the first shaft and can rotate around the first shaft. The other ends are connected by a long tension spring 35. The pressing rod is located above the fish-pressing plate drive rod, and the two rods have a certain angle between them. Two sets of fish-pressing plate drive rods and pressing rods are provided, located on the left and right sides of the frame. A first rotating shaft 36 connects the pressing rods on the left and right sides, and the first rotating shaft is radially fixed to a first top pressing rod 361. Second rotating shafts 37 are connected to the left and right side walls of the frame 1, and the second rotating shaft is radially fixed to a second top pressing rod 371. The ends of the second top pressing rod and the first top pressing rod are respectively fixed to the fish-pressing plate 34. When the fish-pressing drive rod rotates downwards, the deformation of the long tension spring pulls the pressure rod to rotate downwards around the first axis. The first pivot between the left and right sides moves downwards accordingly, pushing the first pressure rod and causing the fish-pressing plate to descend. During the descent, the second pressure rod rotates around the second crossbar, pushing the fish-pressing plate downwards along with the first pressure rod to press the fish. After pressing the fish, the second and first pressure rods form an angle, creating a stable triangle with the combined force of the first and second pressure rods on the fish-pressing plate, thus improving the stability of the pressing action. The tension of the long spring connecting the fish-pressing drive rod and the pressure rod on the same side is adaptively adjustable, automatically adjusting the height of the fish-pressing plate to suit fish of different thicknesses, achieving the appropriate pressing effect without damaging the fish.

[0039] The first shaft 31 is radially fixedly connected to the first flywheel-driven fish-pressing rod 381. The opposite end of the first flywheel-driven fish-pressing rod is connected to one end of the second flywheel-driven fish-pressing rod 382. The other end of the second flywheel-driven fish-pressing rod is connected to the radius of the flywheel 51, forming a cam mechanism. The rotation of the flywheel causes the shaft between the second flywheel-driven fish-pressing rod and the first flywheel-driven fish-pressing rod to move horizontally, thereby driving the fish-pressing drive rod to rotate around the first shaft 31, which in turn drives the rotation of the pressure rod 33, thereby driving the first rotating shaft 36 to move up and down.

[0040] The knife holder mechanism 4 includes a knife holder 41, knife holder guide rail plates 42 placed on both sides of the knife holder, and a knife holder drive shaft 43 placed between the two knife holder guide rail plates. The knife holder is fixedly mounted on the knife holder drive shaft. The two ends of the knife holder drive shaft are adapted to the guide rails 421 of the knife holder guide rail plates and can move up and down along the guide rails, so that the bleeding knife 411 on the knife holder can penetrate the fish gills or lift the bleeding knife.

[0041] The knife holder transmission mechanism 5 includes a motor, a flywheel 51, and a knife holder drive linkage 52. One end of the knife holder drive linkage is connected to the knife holder drive shaft 43, and the other end is pivotally connected to the radius of the flywheel 51, forming a cam mechanism that allows the knife holder to move up and down along the guide rail 421. Preferably, the other end of the knife holder drive linkage 52 is coaxial with the other end of the second flywheel drive pressing rod 382, ​​so that the flywheel synchronously drives the raising and lowering of the knife holder's bleeding knife and pressing plate. Since the lowering stroke of the knife holder's bleeding knife is greater than the lowering stroke of the pressing plate, when the motor drives the flywheel to rotate, the fish is pressed down first and then killed by the bleeding knife.

[0042] The flywheel completes one rotation, allowing the blade holder to descend from its initial highest position, pierce the fish's gills, and then lift back to its original position.

[0043] The triggering mechanism 6 includes a second shaft 61 spanning above the front end of the fish inlet channel. Both ends of the second shaft are fixed to the frame by bearings. The second shaft is connected to a trigger plate 62 via a radially fixed connecting rod. The trigger plate can touch the exposed fish mouth at the front end of the fish inlet channel. The fish mouth pushes the trigger plate to rotate the second shaft, which in turn drives another radially fixed locking rod 63 to rotate.

[0044] Below the channel tray 22, two conveyor rollers connected by a conveyor chain are installed. One of the conveyor rollers 641 has its axle fixedly connected to a connecting rod 6411, and the other end of the connecting rod is connected to a roller 6412. Under normal conditions, this roller abuts against the bottom surface of the channel tray 22, causing the channel tray and the upper channel plate to close vertically. When the conveyor roller rotates, the connecting rod 6411 rotates around the conveyor roller 641 as its axle center, and the longitudinal height of the roller decreases. As the roller rotates and under its own gravity, the channel tray opens around the pivot of the hinge 2200, allowing the cleaned fish to be discharged from the fish inlet channel.

[0045] The locking lever unlocks or opens the clutch mechanism, driving or locking one of the transmission rollers. The clutch mechanism includes a trigger flywheel 65 connected to the motor, with a step 651 circumferentially arranged on the trigger flywheel. A locking lever 63 is radially connected to a tension spring 66, the other end of which is fixedly mounted on the frame. Under normal conditions, the tension spring tightens the locking lever so that the end face of the locking lever abuts against the step of the trigger flywheel, and the locking lever body is located on the tangential surface of the trigger flywheel, locking the trigger flywheel. When the fish mouth pushes the trigger plate, causing the locking lever to rotate and move away from the trigger flywheel, the tension spring elongates, causing the trigger flywheel to rotate. This rotation, transmitted through the transmission device, drives another transmission roller 642 to rotate, thereby initiating the downward opening of the channel tray 22. Optionally, the transmission device is a fixed connection between the axle of the trigger flywheel and the axle of the other transmission roller. After the fish exits the fish inlet channel, the contraction force of the tension spring pulls the locking lever back to the tangential point of the flywheel, with the end face of the locking lever abutting against the step, locking the trigger flywheel. The connecting rod 6411 rotates exactly one revolution around the axle of the transmission roller 641, turning the channel tray from opening downwards to closing upwards.

[0046] A trigger link 631 is also provided radially on the locking rod 63. The other end of the trigger link is radially fixedly connected to the bushing of the first shaft 31. A trigger lever handle 633 is also radially connected to the bushing. In case the trigger plate 62 fails to trigger, the trigger lever handle can be manually pushed to rotate around the first shaft, pushing the trigger link to push the locking rod away from or contact the step of the trigger flywheel, thereby activating the opening or closing of the channel tray.

[0047] Before the fish-killing machine starts working, to ensure the cutting position is more suitable for the fish of the current size, the fish-killing and bleeding machine also includes a front channel adjustment mechanism, a rear channel adjustment mechanism, and an adjustable blade holder mechanism. A fish-pressing plate 34 is positioned between the front channel adjustment mechanism and the rear channel adjustment mechanism.

[0048] The adjustable tool holder mechanism is based on the above-mentioned tool holder mechanism. A third shaft 422 is provided on the upper part of the tool holder guide plate 42. The third shaft is fixed on the machine frame. The lower rotating shaft of the tool holder guide plate is connected to one end of a tool holder position adjusting rod 44. When the tool holder position adjusting rod is pulled back and forth, the tool holder guide plate 42 can be driven to rotate around the third shaft 422, thereby adjusting the lower position of the bleeding knife 411.

[0049] The channel adjustment mechanism includes an arc-shaped channel plate 71, an arc-shaped guide plate 72, and an L-shaped adjustment rod. The arc-shaped channel plate and the arc-shaped guide plate are designed with intersecting lines and welded together, located below the window on the upper plate of the channel. Two side guide plates 721 and one middle guide plate 722 are set on the arc-shaped guide plate. The three guide plates extend along the rear end of the fish inlet channel in the length direction and are arranged in an arched pattern along the arc direction of the arc-shaped guide plate in the transverse direction. By adopting an arc-shaped structure and intersecting line design, combined with the side guide plates and the middle guide plate, a fish inlet channel that adapts to the head and side contours of the fish is formed.

[0050] Corresponding to both sides of the fish inlet channel, two L-shaped adjusting rods are fixed to the upper surface of the arc-shaped channel plate. One rod 731 of the L-shaped adjusting rod is vertically positioned relative to the upper surface of the arc-shaped channel plate, while the other horizontal rod 732 extends from the window of the upper channel plate towards the three guide plates in the same direction. A protrusion 733 is provided at the bend of the L-shaped adjusting rod, and a screw is installed on the protrusion. Front channel limiting plates 216 are provided on both sides of the window on the top surface of the upper channel plate to limit the protrusion when the front channel adjusting mechanism rotates. The screw serves as the fulcrum for the rotation of the front channel adjusting mechanism. Spring pull rings 217 are fixed to the outer sides of the two front channel limiting plates respectively. A tension spring rod 734 is also provided between the end of the horizontal rod of the L-shaped adjusting rod and the bend, and a long tension spring 7341 connects the tension spring rod and the spring pull ring.

[0051] A middle support rod 45 is also provided between the two tool holder guide rail plates 42 to secure the tool holder guide rail plates on both sides so that they can rotate simultaneously. An adjustment plate rotating bracket 74 is welded to the middle support rod of the guide rail plate, and the other end of the adjustment plate rotating bracket is connected to the end shaft of the horizontal rod 732 of the L-shaped adjustment rod.

[0052] As the cutter holder guide plate rotates, the central support rod pushes the adjusting plate bracket to move back and forth along the fish inlet channel. When the cutter holder guide plate moves forward, the end of the transverse rod rotates diagonally downwards and backwards, moving the screw on the protrusion away from the front channel limit plate. The long tension spring 7341 ensures that the channel front adjustment mechanism cannot completely flip to the rear end of the fish inlet channel, and the three guide plates on the arc-shaped guide plate press down, reducing the distance between the upper part of the fish inlet channel and the channel support plate. When the cutter holder guide plate moves backward, the end of the transverse rod rotates diagonally upwards and forwards, and the screw on the protrusion contacts the front channel limit plate. The channel front adjustment mechanism rotates with this screw as a fulcrum, and the three guide plates on the arc-shaped guide plate rise, increasing the distance between the upper part of the fish inlet channel and the channel support plate. This achieves the adjustment of the thickness of the fish's head and side profile within the fish inlet channel.

[0053] A positioning blade 9 is also provided between the two L-shaped adjusting rods 73. The tip of the positioning blade extends towards the channel tray. The upper surface of the arc-shaped channel plate 71 is connected to the blade body of the positioning blade via a rotating shaft seat. The tail of the positioning blade is connected to a spring rod 92 fixedly installed on the upper surface of the arc-shaped channel plate via a short tension spring 91. The rotation of the positioning blade has no power mechanism. When the fish slides into the channel tray, the fish presses upward against the positioning blade, and the tail of the positioning blade moves downward, causing the short tension spring to deform and generate tensile force. The upward retraction force of the short tension spring itself allows the tip of the positioning blade to maintain downward pressure. When the fish enters the channel below the adjusting mechanism, the tip of the positioning blade can apply elastic pressure to the fish. The positioning blade adopts a hook-type design. During the pressing process, the resistance is small when the fish moves forward and extremely large when it moves backward, ensuring that the live fish in the fish entry channel does not move backward after reaching the designated killing position, thus achieving the positioning effect of the fish.

[0054] The channel rear adjustment mechanism 8 includes an adjustment handle 81, a first swing arm 82 at an obtuse angle to the adjustment handle, a fourth shaft 83, a second swing arm 84, and a channel rear adjustment plate 85. The fourth shaft is rotatably fixed to the frame at both ends by bearings and spans across the fish inlet channel. One end of the adjustment handle and the first swing arm are fastened together or welded together, with the fourth shaft as the rotation center. The tool holder position adjustment lever 44 and the second swing arm 84 are located on either side of the first swing arm. The other end of the tool holder position adjustment lever is connected to the first swing arm's rotating shaft. Rotation of the adjustment handle will trigger the tool holder position adjustment lever 44, adjusting the rotational position of the tool holder guide plate 42.

[0055] The fourth axis is radially fixedly connected to the second swing rod. The channel rear adjustment plate is set inside the fish inlet channel, with one end hinge 2100 near the fish inlet movably connected to the channel upper plate. The top surface of the channel rear adjustment plate near the front end of the fish inlet channel is pivotally connected to a connecting plate 851, and the other end of the connecting plate is pivotally connected to the second swing rod 84. As the adjustment handle rotates, the connecting plate and the second swing rod move up and down through the channel upper plate window 215, causing the front end of the channel rear adjustment plate to move up and down inside the rear end of the fish inlet channel, thus adjusting the height of the rear end of the fish inlet channel to accommodate the thickness of the fish body. When the adjustment handle moves forward, the second swing rod moves backward, thereby pulling the knife holder position adjustment rod and the knife holder guide plate backward, moving the cutting position backward. The arc-shaped channel plate and arc-shaped guide plate of the channel front adjustment mechanism are raised upward, increasing the inlet angle. The pivot point of the connecting plate and the second swing rod rises, and the front end of the channel rear adjustment plate, with the pivot of the hinge 2100 at its rear end as the rotation center, rises, increasing the feeding inlet. When the adjusting handle moves backward, the second swing arm moves forward, thereby pulling the knife holder position adjusting rod and the knife holder guide plate forward. This moves the cutting position forward, causing the arc-shaped channel plate and arc-shaped inlet plate of the channel front adjusting mechanism to press down, reducing the inlet angle. The pivot point between the connecting plate and the second swing arm also lowers. The channel rear adjusting plate, with its rear hinge as the center of rotation, lowers its front end, reducing the feeding inlet size. The adjusting handle can simultaneously adjust the knife holder mechanism, the channel front adjusting mechanism, and the channel rear adjusting mechanism, achieving synchronized adjustment of the cutting position and the fish inlet channel adapted to various fish sizes, improving fish-killing accuracy and simplifying operation. If the fish inlet channel is too large, the fish-pressing mechanism cannot stably press the fish; if the fish inlet channel is too small, the fish cannot complete the entire process of pressing, killing, and draining.

[0056] The adjusting handle 81 is also provided with a positioning pin hole 811, and a corresponding positioning pin hole 12 is provided on the frame wall. By passing the positioning pin through the adjusting handle and the positioning pin hole on the frame wall, six adjustment positions are set.

[0057] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A fish-killing and bleeding machine, characterized in that, It includes a frame (1), a fish inlet channel (2) inclinedly arranged in the frame, a fish pressing mechanism (3) arranged in the middle of the fish inlet channel, a knife holder mechanism (4) arranged above the front end of the fish inlet channel, a knife holder transmission mechanism (5), and a triggering mechanism (6) located at the front end of the fish inlet channel. The bottom of the fish inlet channel is a channel tray that can be opened downwards and closed upwards at the front end; The fish enters the channel from the rear end of the fish inlet channel, located at a high position, and slides down the channel using its own gravity. The fish pressing mechanism presses down on the fish's body, and the knife holder transmission mechanism drives the knife holder mechanism to fall. The bleeding knife on the knife holder pierces the fish's gills, and then the knife holder rises. The fish pressing mechanism then rises, and the fish slides further into the front end of the channel. The limiting structure at the front end of the channel causes the fish to protrude from its mouth and touch the trigger mechanism, causing the channel tray to open downwards and discharge the fish from the fish inlet channel. The knife holder mechanism (4) includes a knife holder (41), knife holder guide rails (42) placed on both sides of the knife holder, and a knife holder drive shaft (43) placed between the two knife holder guide rails. The knife holder is fixedly installed on the knife holder drive shaft. The two ends of the knife holder drive shaft are adapted to the guide rails (421) of the knife holder guide rails and can move up and down along the guide rails, so that the bleeding knife on the knife holder can pierce the fish gills or lift the bleeding knife. A third shaft (422) is provided on the upper part of the tool holder guide plate (42), which is fixed on the machine frame. The lower part of the tool holder guide plate is connected to one end of a tool holder position adjustment lever (44). When the tool holder position adjustment lever is pulled back and forth, the tool holder guide plate can be driven to rotate around the third shaft (422) to adjust the lower position of the tool holder bloodletting knife (411). The fish killing and bleeding machine also includes a channel rear adjustment mechanism, which includes an adjustment handle (81), a first swing rod (82) with an angle to the adjustment handle, a fourth shaft (83), a second swing rod (84), and a channel rear adjustment plate (85); the two ends of the fourth shaft (83) are rotatably mounted on the frame and span across the fish inlet channel; one end of the adjustment handle and the first swing rod are fastened together with the fourth shaft (83) as the rotation center; the knife holder position adjustment lever (44) and the second swing rod are located on both sides of the first swing rod, and the other end of the knife holder position adjustment lever is connected to the first swing rod shaft. The rotation of the adjustment handle links the knife holder position adjustment lever (44) to adjust the rotation position of the knife holder guide plate (42); The fourth axis (83) is radially fixedly connected to the second swing rod. The channel rear adjustment plate (85) is set in the fish inlet channel. One end near the fish inlet is movably connected to the upper plate of the channel. The top surface of the channel rear adjustment plate near the front end of the fish inlet channel is connected to a connecting plate (851) by a pivot. The other end of the connecting plate is connected to the second swing rod (84) by a pivot. As the adjustment handle rotates, the connecting plate and the second swing rod drive the channel rear adjustment plate (85) to move up and down in the rear end of the fish inlet channel, thereby adjusting the height of the rear end of the fish inlet channel to accommodate the thickness of the fish body.

2. The fish-killing and bleeding machine as described in claim 1, characterized in that, The fish inlet channel includes an upper channel plate (21) and a channel support plate (22) that are joined together. The bottom surface of the upper channel plate is fixedly connected to the left channel plate (211) and the right channel plate (212). The distance between the left channel plate and the right channel plate at the front end of the fish inlet channel gradually forms the shape of a fish head. The distance between the ends of the two plates is connected by a channel front upper arc plate (213) to form a channel with an opening facing downward. The left channel plate and the right channel plate are respectively provided with feeding inlet side plates at the rear end. The feeding inlet lower plate (227) is fixedly welded to the bottom of the two feeding inlet side plates. The feeding inlet lower plate is movably connected to the rear end of the channel support plate. The channel support plate includes a first slide plate (221), a left slide plate (223) and a right slide plate (224) located on both sides of the first slide plate, and a second slide plate (222); the second slide plate is slightly raised relative to the first slide plate, and the second slide plate abuts against the first slide plate, the left slide plate and the right slide plate respectively along the direction of fish sliding, forming a concave part, which serves as a contoured lower channel that envelops and supports the fish body; A window is set on the upper plate of the channel. The fish-pressing plate of the fish-pressing mechanism presses down on the fish body through the window, and the bleeding knife pierces the fish gills through the window.

3. The fish-killing and bleeding machine as described in claim 2, characterized in that, It also includes a channel front adjustment mechanism, which includes an arc-shaped channel plate (71), an arc-shaped guide plate (72) and an L-shaped adjustment rod. The arc-shaped channel plate and the arc-shaped guide plate adopt an intersecting line design and are welded together, located below the window of the channel upper plate. Several guide plates (721, 722) are set on the arc-shaped guide plate. The longitudinal length of each guide plate extends along the rear end of the fish inlet channel, and the horizontal direction of each guide plate is arranged along the arc direction of the arc-shaped guide plate, forming an arch shape. The arc-shaped channel plate, the arc-shaped guide plate, and each guide plate are combined to form an upper fish inlet channel that adapts to the head and side contours of the fish. Two L-shaped adjusting rods are fixed to the upper surface of the arc-shaped channel plate. One rod (731) of the L-shaped adjusting rod is vertically set relative to the upper surface of the arc-shaped channel plate, and the other horizontal rod extends from the window to each guide plate in the same longitudinal direction. A protrusion (733) is provided at the turning point of the L-shaped adjusting rod. Front channel limiting plates (216) are provided on both sides of the window on the top surface of the channel plate. When the front channel adjusting mechanism increases the distance between each guide plate and the channel support plate at the top of the fish inlet channel, the protrusion is limited when rotating to prevent the front channel adjusting mechanism from completely flipping over. The front end of the fish inlet channel serves as the fulcrum for the rotation of the channel front adjustment mechanism. Spring pull rings (217) are fixedly installed on the outer sides of the two front channel limiting plates. A tension spring rod (734) is also installed between the end of the horizontal rod of the L-shaped adjustment rod and the turning point. A first long tension spring (7341) connects the tension spring rod and the spring pull ring. The first long tension spring is used to ensure that the channel front adjustment mechanism cannot completely flip to the rear end of the fish inlet channel when the channel front adjustment mechanism rotates to reduce the distance between each guide plate and the channel support plate at the top of the fish inlet channel.

4. The fish-killing and bleeding machine as described in claim 3, characterized in that, A middle support rod (45) is also provided between the two sides of the tool holder guide rail plate (42) to fasten the two sides of the tool holder guide rail plate to rotate at the same time. An adjustment plate rotating bracket (74) is welded on the middle support rod of the guide rail plate. The other end of the adjustment plate rotating bracket is connected to the end shaft of the horizontal rod (732) of the L-shaped adjustment rod.

5. The fish-killing and bleeding machine as described in claim 1, characterized in that, The fish inlet channel includes a channel upper plate (21), a window (215) is provided on the channel upper plate (21), and the connecting plate (851) and the second swing arm (84) move up and down through the channel upper plate window (215) as the adjusting handle (81) rotates.

6. The fish-killing and bleeding machine as described in claim 1, characterized in that, The fish pressing mechanism (3) includes a first shaft (31) that spans above the fish inlet channel and is mounted on the frame via bearings. The first shaft is provided with a fish pressing plate drive rod (32), a pressing rod (33), and a fish pressing plate (34). One end of the fish-pressing plate drive rod and the pressure rod are radially fixed to the first shaft (31) and can rotate around the first shaft (31). The other ends of the two are connected by a second long tension spring (35). The pressure rod is located above the fish-pressing plate drive rod, and there is an angle between the two rods. Two sets of fish-pressing plate drive rods and pressure rods are provided, located on the left and right sides of the frame. A first rotating shaft (36) is connected between the pressure rods on the left and right sides. The first rotating shaft is radially fixed to the first top pressure rod (361). The left and right sides of the frame are connected to the second rotating shaft. (37) The second rotating shaft is radially fixedly connected to the second top pressure rod (371). The ends of the second top pressure rod and the first top pressure rod are respectively fixed on the fish pressing plate (34). The first shaft (31) is radially fixedly connected to the first flywheel drive fish pressing link (381). The first flywheel drive fish pressing link drives the fish pressing drive rod to rotate forward and backward. Through the deformation of the second long tension spring, the pressure rod is pulled to rotate forward and backward around the first shaft (31). The first rotating shaft is pressed down or lifted accordingly, thereby pushing the first top pressure rod, the second top pressure rod, and the fish pressing plate to descend or rise.

7. The fish-killing and bleeding machine as described in claim 6, characterized in that, The knife holder mechanism (4) includes a knife holder (41), knife holder guide rails (42) placed on both sides of the knife holder, and a knife holder drive shaft (43) placed between the two knife holder guide rails. The knife holder is fixedly mounted on the knife holder drive shaft. The two ends of the knife holder drive shaft are adapted to the guide rails (421) of the knife holder guide rails and can move up and down along the guide rails, so that the bleeding knife (411) on the knife holder can pierce the fish gills or lift the bleeding knife.

8. The fish-killing and bleeding machine as described in claim 7, characterized in that, The knife holder transmission mechanism (5) includes a motor, a flywheel (51) and a knife holder drive linkage (52). One end of the knife holder drive linkage is connected to the knife holder drive shaft (43), and the other end is connected to the radius of the flywheel (51) to form a cam mechanism, which makes the knife holder move up and down along the guide rail (421). The other end of the knife holder drive linkage (52) is coaxial with the other end of the second flywheel drive fish pressing linkage (382). The first flywheel drive fish pressing linkage (381) is connected to the second flywheel drive fish pressing linkage (382) by a rotating shaft. The flywheel synchronously drives the knife holder bleeding knife and the fish pressing plate to rise and fall. The downward stroke of the knife holder bleeding knife is greater than the downward stroke of the fish pressing plate.

9. The fish-killing and bleeding machine as described in claim 8, characterized in that, The touch mechanism includes a second shaft (61) spanning above the front end of the fish inlet channel. The second shaft (61) is radially fixedly connected to a trigger plate (62) and a locking rod (63), a clutch mechanism, and two conveyor rollers connected by a conveyor chain. The trigger plate can touch the exposed fish mouth at the front end of the fish inlet channel. The fish mouth pushes the trigger plate to drive the second shaft (61) to rotate. The second shaft (61) drives the locking rod (63) to rotate. The locking rod unlocks or opens the clutch mechanism to drive or lock one of the transmission rollers. The axle of the other transmission roller is radially fixedly connected to one end of a connecting rod. The roller connected to the other end of the connecting rod rotates around the axle. The roller abuts against the channel tray and completes the process of opening and closing the channel tray during the rotation.

10. The fish-killing and bleeding machine as described in claim 9, characterized in that, The clutch mechanism includes a trigger flywheel (65) connected to the motor, a step (651) is provided in the circumference of the trigger flywheel, a locking rod (63) is radially connected to a tension spring (66), the other end of the tension spring is fixedly mounted on the frame, under normal conditions the tension spring pulls the locking rod so that the end face of the locking rod abuts against the step of the trigger flywheel, the locking rod body is located on the tangential surface of the trigger flywheel, and the trigger flywheel is locked. A trigger link (631) is also provided radially on the locking rod (63). The other end of the trigger link is radially connected to a bushing of the first shaft (31) on the frame. A trigger lever handle (633) is also radially fixedly connected to the bushing. In case the trigger plate (62) fails to trigger, the trigger lever handle can be manually pushed to rotate around the first shaft (31) to push the trigger link to push the locking rod away from or contact the step of the trigger flywheel, thereby starting the channel tray to open or close.

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