Production method of slaughtered chicken and processing equipment of slaughtered chicken

Abstract

The invention relates to a chicken slaughtering production method and processing equipment thereof, and belongs to the technical field of poultry slaughtering, the technical scheme comprises the steps of darkroom slaughtering, darkroom electric stunning, blood draining, segmented scalding, unhairing and then entering the next procedure, the equipment used by the invention is an electric stunning machine, the electric stunning machine comprises a transmission chain, hooks and a support, the support of the electric stunning machine is provided with an electric bed, the electric bed is opposite to the hooks above the electric bed, and the transmission chain is connected with the transmission chain. A conductive rod is arranged on the support and is in contact with the moving hook above the electric bed, a power supply voltage regulator is arranged on the support, when the chicken head is in contact with the electric bed and the chicken feet are connected with the conductive rod through the hook, the circuit of the electric stunning machine is closed and connected, a hard baffle is arranged on one side of the electric bed, an elastic baffle is arranged on the other side of the electric bed, and the two baffles are fixedly connected with the support respectively. The processing equipment further comprises a special roughening machine. The chicken is fresh, the appearance color is good, unhairing is clean, and the defective rate is reduced.

Description

Technical Field

[0001] The invention relates to a production method for slaughtering chickens and processing equipment thereof, belonging to the technical field of poultry slaughtering. Background Art

[0002] In the production method of slaughtering chickens, the chickens are usually hung on a conveyor and processed in sequence through water anesthesia, electric anesthesia, slaughtering, bleeding, scalding, and depilation. As for traditional water therapy, after the chicken's head enters the water, it struggles desperately, and is prone to broken wings, red wing tips and other injuries; traditional high-voltage electric anesthesia, usually around 65-85 volts, has the disadvantages of easily making the chicken body stiff and damaging the chicken meat; traditional bleeding time is usually 3-6 minutes. Due to the long bleeding time, the chicken body temperature can easily drop, the chicken body becomes cold and stiff, making it difficult to remove the hair. After depilation, the chicken is easily injured and loses its freshness. The temperature of the traditional chicken hot box is high. If the temperature is lowered, the chicken hot time must be extended. Overheating or too long a time will cause the chicken surface to become soft. After the depilatory process, the chicken skin becomes smooth, the existing goose bumps become flat, the color is not good-looking, and the quality of the chicken is reduced. In addition, although the depilatory machine can remove most of the chicken feathers, there are still some remaining chicken feathers in the gaps and corners, which need to be manually cleaned, which is time-consuming and labor-intensive. Summary of the Invention

[0003] The purpose of the present invention is to provide a production method for slaughtering chickens and processing equipment thereof, which can make the chicken meat fresh, have good appearance and color, and reduce the defective rate.

[0004] The technical solution of the present invention is: a production method for slaughtering chickens, comprising the following steps: 1) Darkroom slaughter: Hang the chicken head downward on the hook of the transmission chain, and move forward with the transmission chain into the rest darkroom, and then into the slaughter darkroom for instant slaughter; 2) Darkroom electric anesthesia: The slaughtered chicken moves along the transmission chain into the electric anesthesia machine, which is located in a darkroom, and is anesthetized by the electric anesthesia machine; 3) Blood draining: Blood draining is carried out simultaneously with the slaughtering and electric anesthesia process, and then continues for 90-120 seconds before entering the scalding process; 4) Scalding in sections: The chickens on the transmission chain first enter the main scalding tank for scalding, then transfer to the head scalding tank for scalding. Then, the direction of the chickens is turned, and the chicken heads are hung on the hooks of the transmission chain and enter the foot scalding tank for scalding. 5) After being depilated by the depilatory machine, a handheld plucking machine is used to remove the remaining feathers on the chicken body, and then the chicken enters the existing finishing process.

[0005] Furthermore, the voltage range of the electric anesthesia machine is 10-30 volts, and the electric anesthesia time is 10-15 seconds.

[0006] Furthermore, during the electro-numbing process, hot water at 38-42°C is used to spray the chicken feet and hooks to improve the electrical conductivity.

[0007] Furthermore, the temperature in the main ironing tank is 56-61°C, and the ironing time is 90-60 seconds.

[0008] Furthermore, a processing equipment for implementing the chicken slaughtering production method according to claim 1 is provided, wherein the equipment is an electric anesthesia machine, including an insulating component, the upper end of the insulating component is slidably connected to the guide rail, the lower end of the insulating component is equipped with a detachable and fixedly connected hook, the insulating component is fixedly connected to the transmission chain, a flat electric bed is provided on the bracket, the electric bed is opposite to the hook above it, a fixedly connected conductive rod is provided on the bracket, the conductive rod is in contact with the hook above the electric bed, a power regulator is provided on the bracket, the positive and negative poles of the power regulator are electrically connected to the electric bed and the conductive column respectively through wires, when the chicken head is in contact with the electric bed and the chicken feet are connected to the conductive column through the hook, the electric anesthesia machine circuit is closed and connected.

[0009] Furthermore, a hard baffle is installed on one side of the electric bed, and an elastic baffle opposite to the hard baffle is installed on the other side of the electric bed, and the two baffles are respectively fixedly connected to the bracket.

[0010] Furthermore, a processing device for implementing the chicken slaughtering production method according to claim 1 is provided, wherein the device is a special depilating machine, comprising a handle, a power speed switch, and a power mechanism fixed in the handle and electrically connected to the power speed switch, and is characterized in that: the electrical input end of the power mechanism is electrically connected to a battery or a power source, the output shaft of the power mechanism is detachably fixedly connected to the depilatory turntable, and a plurality of staggered depilating rods are fixed to the depilatory turntable.

[0011] The beneficial effects of the present invention are as follows: 1. The hanging chickens enter the dark rest room along with the transmission chain. The dark rest room can make the chickens to be slaughtered lose their attention to the environment, which is conducive to alleviating tension and fear; the slaughtering room is also a dark room. The chickens to be slaughtered enter the slaughtering room in a maintained state and are slaughtered instantly, which can reduce fear and struggle during slaughter and improve meat quality. 2. The present invention implements slaughtering first and then electric anesthesia. Electric anesthesia is a supplementary procedure for slaughtering, which plays a role in ending the struggle as soon as possible. Therefore, slaughtering can be completed by technical means of low voltage and shortened electric anesthesia time, so that the chicken is not stiff and the quality is not damaged. 3. The present invention has hard baffles and elastic baffles hanging on both sides of the electric bed. The slaughtered chickens are anesthetized when passing between the two baffles. The two baffles elastically limit the struggling range of the slaughtered chickens, avoiding phenomena such as broken wings and broken legs, and can reduce defective products. 4. The bleeding time of the existing technology usually takes 3-6 minutes. The long bleeding time causes the chicken body temperature to drop, and the chicken body becomes cool. After being scalded at high temperature, the chicken skin becomes flat, smooth, soft, and pale after coming out of the depilatory machine, so the color is not good and the meat is not fresh. The bleeding time of this technology is shortened to 90-120 seconds, and the main blood flow and most of the branch blood flows are drained away, and a small part of the branch blood flows is retained, which can make the surface of the chicken body appear light red. The rapid bleeding of this technology slows down the cooling rate of the chicken body, making the temperature difference between it and the scalded chicken small, overcoming the defects of the long bleeding time of the existing technology; 5. The present invention designs the scalding program into a segmented type, which can reduce the temperature in the main scalding tank. The cortex of the chicken head and chicken feet is thicker and harder, and the scalding temperature is higher than the temperature of the main scalding tank. The segmented scalding solves the problem that the chicken body, chicken head and chicken feet are easily depilated, and avoids skin damage and meat damage to the chicken body, making the chicken fresh and improving the appearance of the product. 6. The depilatory stick of the present invention is made of rubber material and is used for manually removing residual chicken feathers from the chicken body. Therefore, using the depilatory stick can make the depilation clean and fast without damaging the chicken body. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the electric anesthesia machine of the present invention.

[0013] Figure 2 This is a schematic diagram of the electrical connections of an electric anesthesia machine.

[0014] Figure 3 yes Figure 2 Enlarged view of part A in the middle.

[0015] Figure 4 This is a schematic diagram of a special dehairing machine.

[0016] Figure 5 yes Figure 4 Schematic diagram of the middle B direction.

[0017] In the figure: 1 transmission chain, 2 guide rail, 3 insulation component, 4 conductive rod, 5 bracket, 6 hook, 7 power voltage regulator, 8 spring, 9 elastic baffle, 10 electric bed, 11 hard baffle, 12 positive wire, 13 negative wire, 14 handle, 15 power mechanism, 16 depilatory turntable, 17 depilatory stick, 18 power speed switch. DETAILED DESCRIPTION

[0018] Example 1

[0019] A production method for slaughtering chickens comprises the following steps: 1) Darkroom Slaughtering: The chicken is hung head-down on a hook on the transmission chain. The chain then moves into a dark resting room and then into a dark slaughtering room for instant slaughter. The darkroom is illuminated by a 5-8 watt lamp near the hanging chicken. The darkroom serves to distract the chicken from its surroundings, alleviating any anxiety or fear, thereby improving meat quality. It also facilitates observation of movements within the darkroom.

[0020] 2) Electric anesthesia in a dark room: The slaughtered chicken is rotated along the transmission chain and enters the electric anesthesia machine, which is located in a dark room. The voltage range of the electric anesthesia machine is 10-30 volts, and the electric anesthesia time is 10-15 seconds.

[0021] In actual operation, according to the weight of the chicken, for a chicken weighing 2-3 pounds, a voltage of 10 volts can be selected, and the electric numbness time can be selected for 10 seconds; for a chicken weighing 7-8 pounds, a voltage of 30 volts can be selected, and the electric numbness time can be selected for 15 seconds. The present invention adopts short-time and low-pressure numbness to ensure good quality of chicken.

[0022] During the electro-anesthetizing process, hot water at 38-42°C is sprayed over the chicken's feet and hooks. The hot water flows downward through the chicken's body to the electro-anesthetizing bed, facilitating electrical conduction and enhancing the electro-anesthetizing effect. This results in better low- and high-speed anesthetizing. Using hot water spray does not affect the depilatory effect.

[0023] 3) Blood Draining: Blood draining is performed simultaneously with the slaughter and electric anesthesia processes, continuing for 90-120 seconds before transitioning to the scalding process. A blood collection tray is located below the operating table. In practice, the blood draining time varies depending on the weight of the chicken. For larger chickens weighing 7-8 jin (15-20 catties), the blood draining time after electric anesthesia is up to 120 seconds, while for smaller chickens weighing 2-3 jin (15-20 catties), the blood draining time is at least 90 seconds. This technology drains the main blood stream and most of the tributaries, shortening the blood draining time compared to existing technologies. This allows the chicken to maintain a consistent body temperature and a slight blood color, minimizing the temperature difference between the chicken and the scalded chicken, thus overcoming the shortcomings of these existing technologies.

[0024] 4) Scalding in stages: The chicken, hung on the chain, first enters the main scalding tank for scalding, then moves to the head scalding tank for scalding. The chicken is then turned around, with the head hung on the hook of the chain, and then enters the foot scalding tank for scalding. The temperature in the main scalding tank is 56-61°C, and the scalding time is 60-90 seconds. The temperature of the main scalding tank is lower than that of the head and foot scalding tanks.

[0025] For smaller chickens, the main scalding vat temperature is preferably 56-58°C, with a scalding time of 60 seconds, which is 4-6°C lower than the existing scalding vat temperature. For larger chickens, the main scalding vat temperature is preferably 59-61°C, with a scalding time of 90 seconds, which is 3°C lower than the existing scalding vat temperature. Scalding chicken in sections ensures fresher, higher-quality chicken.

[0026] 5) Depilation: After the depilation process, a handheld plucking machine removes any remaining feathers from the chicken, and the chicken then enters the existing finishing process. The plucking machine provides clean and quick depilation without damaging the chicken.

[0027] Example 2 A special electric anesthesia machine for implementing a production method of slaughtering chickens, see Figures 1 to 3 A guide rail 2 is provided above the frame, and a number of slidingly connected insulating components 3 are installed on the guide rail. The insulating components 3 are made of nylon material. Each insulating component is fixedly connected to the transmission chain 1. The lower end of each insulating component 3 is respectively provided with a detachable and fixedly connected hook 6. A horizontal electric bed 10 is provided on the bracket 5. The electric bed is opposite to the hook above it. A fixedly connected conductive rod 4 is installed on the bracket. The conductive rod is in contact with the hook above the electric bed. A power regulator 7 is installed on the bracket. The positive and negative poles of the power regulator are electrically connected to the electric bed 10 and the conductive column 4 through wires. When working, as the transmission chain moves, the chicken head contacts the electric bed, and the chicken feet are connected to the conductive column through the hook. The chicken body is connected to the electric anesthesia machine circuit as a conductor, and the current passes through the chicken body to implement electric anesthesia. When the chicken body moves away from the electric bed with the transmission chain, the current on the chicken body disappears, and the electric anesthesia of the chicken body ends. The subsequent slaughtered chicken is connected to the electric anesthesia machine circuit as a conductor, and the above steps are repeated continuously. The electric bed is equipped with a hard baffle 11 on one side and an elastic baffle 9 on the other side, facing the hard baffle. The two baffles are respectively fixed to a bracket. Both baffles and the bracket are made of insulating material. When the slaughtered chicken passes between the two baffles and is paralyzed by the electric shock, the elastic baffle 9 can expand and contract with the slaughtered chicken's struggles, providing elastic restraint, protecting the wingtips and feet from injury and reducing defective products.

[0028] Example 3 A special dehairing machine for implementing a chicken slaughtering production method, see Figure 4 、 Figure 5The special depilating machine includes a handle 14 equipped with a power speed switch 18 connected to a power source. The handle houses a power mechanism 15 connected to the power source. The power mechanism's output shaft is detachably fixed to a depilatory turntable 16. A plurality of elastic plucking rods 17 are fixed to the depilatory turntable, arranged in staggered positions. When in use, the plucking machine handle is held, the power speed switch is turned on, and the depilatory turntable rotates. The elastic plucking rods come into contact with the remaining feathers on the chicken, effectively removing the remaining feathers in a labor-saving, quick, and clean manner without damaging the chicken.

Claims

1. A method for slaughtering chickens, characterized in that: The following steps are involved: 1) Darkroom slaughter: Hang the chicken head downward on the hook of the transmission chain, and move forward with the transmission chain into the rest darkroom, and then into the slaughter darkroom for instant slaughter; 2) Darkroom electric anesthesia: The slaughtered chicken moves along the transmission chain into the electric anesthesia machine, which is located in a darkroom, and is anesthetized by the electric anesthesia machine; 3) Blood draining: Blood draining is carried out simultaneously with the slaughtering and electric anesthesia process, and then continues for 90-120 seconds before entering the scalding process; 4) Scalding in sections: The chickens on the transmission chain first enter the main scalding tank for scalding, then transfer to the head scalding tank for scalding. Then, the direction of the chickens is turned, and the chicken heads are hung on the hooks of the transmission chain and enter the foot scalding tank for scalding. 5) After being depilated by the depilatory machine, a handheld plucking machine is used to remove the remaining feathers on the chicken body, and then the chicken enters the existing finishing process.

2. The method for slaughtering chickens according to claim 1, wherein: The voltage range of the electric anesthesia machine is 10-30 volts, and the electric anesthesia time is 10-15 seconds.

3. A method for slaughtering chickens according to claim 2, characterized in that: During the electro-anesthesia process, 38-42°C hot water is used to spray the chicken feet and hooks to improve their electrical conductivity.

4. The method for slaughtering chickens according to claim 1, wherein: The temperature in the main ironing tank is 56-61℃, and the ironing time is 90-60 seconds.

5. A processing device for implementing the chicken slaughtering production method according to claim 1, wherein the device is an electric anesthesia machine, comprising an insulating component (3) whose upper end is slidably connected to a guide rail, a detachable and fixedly connected hook (6) is installed at the lower end of the insulating component (3), and the insulating component (3) is fixedly connected to the transmission chain (1), characterized in that: A horizontal electric bed (10) is provided on the bracket (5), and the electric bed is opposite to the hook above it. A fixedly connected conductive rod (4) is installed on the bracket, and the conductive rod is in contact with the hook above the electric bed. A power voltage regulator (7) is installed on the bracket, and the positive and negative poles of the power voltage regulator are electrically connected to the electric bed (10) and the conductive column (4) respectively through wires. When the chicken head contacts the electric bed and the chicken feet are connected to the conductive column through the hook, the electric anesthesia machine circuit is closed and connected.

6. The processing equipment according to claim 5, characterized in that: A hard baffle (11) is installed on one side of the electric bed, and an elastic baffle (9) opposite to the hard baffle is installed on the other side of the electric bed, and the two baffles are respectively fixed to the bracket.

7. A processing device for implementing the chicken slaughtering production method according to claim 1, wherein the device is a special dehairing machine, comprising a handle (14), a power speed switch (18) fixed on the surface of the handle, and a power mechanism (15) fixed in the handle and electrically connected to the power speed switch, characterized in that: The electric input end of the power mechanism is electrically connected to a battery or a power source, and the output shaft of the power mechanism is detachably fixedly connected to the depilatory turntable (16). A plurality of staggered depilatory rods (17) are fixedly connected to the depilatory turntable.

Images