A method for preparing high-performance egg liquid and a screening device for preparation.

Abstract

This invention discloses a method for preparing high-performance egg liquid and a screening device for the preparation, including a frame, a screening mechanism, a cleaning mechanism, a drying mechanism, a feeding conveyor, a qualified egg unloading machine, an unqualified egg unloading machine, and a robotic arm. The screening mechanism includes a screening frame, an upper linear actuator, an upper detection cylinder, a pressure sensor, an air inlet pipe, a liquid inlet pipe, an air inlet valve, a liquid inlet valve, a weighing sensor, a weighing cylinder, a piston, and a lower linear actuator. The cleaning mechanism includes a power pump, a liquid storage tank, and a liquid delivery pipeline. The drying mechanism includes a fan and an air supply pipe, with the fan connected to the air inlet pipe via the air supply pipe. By measuring the specific gravity of the eggs to determine their quality, relatively fresh eggs with intact internal components can be accurately selected, making this judgment standard more scientific and accurate. The screening device can automate the feeding, screening, cleaning, drying, and unloading of eggs, with each step performed continuously without the need for intermediate transfers, resulting in higher efficiency.

Description

Technical Field

[0001] This invention relates to the field of egg liquid production, and in particular to a method for preparing high-performance egg liquid and a screening device for preparation. Background Technology

[0002] Egg liquid, as an important food ingredient, has wide applications in baking, cooking, food processing, and many other fields. In baked goods, egg liquid imparts excellent color, flavor, and texture to the product; in cooking, it can be used to make various dishes such as scrambled eggs and fried eggs, and its quality directly affects the taste and appearance of the dish; in food processing, the emulsifying properties of egg liquid are a key factor in the production of emulsified products such as mayonnaise and salad dressing. With the continuous development of the food industry, the requirements for egg liquid performance are becoming increasingly stringent. Egg liquid not only needs to possess good basic properties, such as appropriate viscosity and pure flavor, but also needs to demonstrate excellent performance in functional properties such as emulsification, foaming, and gelling to meet the needs of diversified, high-quality food production.

[0003] In the preparation of high-performance egg liquid, the quality differences of eggs play a decisive role in the final performance of the liquid. The egg selection process is of paramount importance in the entire process. The freshness of eggs has a profound impact on the performance of the egg liquid. As eggs are stored for longer periods, a series of physical and chemical changes occur within them. On the one hand, moisture is gradually lost, leading to changes in the concentration of the egg liquid, which in turn affects its fluidity and its ability to interact with other components. On the other hand, proteins denature and degrade, and fats in the yolk may oxidize. These changes severely weaken the emulsifying, foaming, and gelling properties of the egg liquid. Specific selection methods, such as selecting eggs with a specific gravity greater than 1.080, can largely ensure the high freshness of the selected eggs. Because specific gravity is closely related to the content and freshness of the egg's internal substances, a higher specific gravity often indicates an intact internal structure, a reasonable ratio of egg white to yolk, and minimal loss of nutrients, providing a stable and high-quality raw material basis for high-performance egg liquid.

[0004] Eggs carry a variety of microorganisms and contaminants on their surface. If the surface of an egg is not cleaned properly, bacteria can easily get into the egg liquid during the cracking process, affecting the quality of the egg liquid. This can also lead to product spoilage and decay during subsequent processing and storage, shortening the product's shelf life and affecting consumer health.

[0005] In summary, egg screening is a crucial preliminary step in the preparation of high-performance egg liquid. Current high-performance egg liquid preparation technologies typically employ light-based screening, but this method heavily relies on operator experience and subjective judgment. Different operators may have varying understandings and judgments regarding standards such as air cell size, yolk condition, and albumen condition. For example, some operators might consider a slightly blurred yolk outline an acceptable minor change, while others might deem it unacceptable. This subjectivity leads to inconsistencies in screening results, reducing the accuracy and reliability of the screening process. Furthermore, light-based screening struggles to detect subtle changes in the internal components of eggs, and manual, individual light-based inspection is inefficient. Summary of the Invention

[0006] Therefore, it is necessary to provide a method for preparing high-performance egg liquid and a screening device for preparation, in order to address the above-mentioned technical problems.

[0007] To achieve the above objectives, the present invention provides a high-performance egg liquid preparation screening device, including a frame, a screening mechanism, a cleaning mechanism, and a drying mechanism;

[0008] The screening mechanism includes a screening frame, an upper linear actuator, an upper detection cylinder, a pressure sensor, an air inlet pipe, a liquid inlet pipe, an air inlet valve, a liquid inlet valve, a load cell, a weighing cylinder, a piston, and a lower linear actuator. The screening frame is fixedly mounted on the machine frame, and the upper linear actuator is fixedly mounted on the top of the machine frame. The top of the upper detection cylinder is closed, and the bottom is open. The top of the upper detection cylinder is connected to the output end of the upper linear actuator. A pressure sensor, an air inlet pipe, and a liquid inlet pipe are mounted on the upper detection cylinder. An air inlet valve is mounted on the air inlet pipe, and a liquid inlet valve is mounted on the liquid inlet pipe. The load cell is fixedly mounted on the screening frame, and the weighing cylinder is mounted on the detection end of the load cell. Located directly below the upper detection cylinder, the weighing cylinder has an open structure at both ends. The top of the weighing cylinder forms a bayonet to restrict the passage of eggs. The lower linear actuator is fixedly mounted on the frame, and a piston is installed at the output end of the lower linear actuator. The piston can move in and out of the weighing cylinder under the drive of the lower linear actuator. When the piston is inside the weighing cylinder, it is in a sliding seal connection with the weighing cylinder. The upper linear actuator can drive the upper detection cylinder to move to a position where it is in sealed contact with the weighing cylinder. When the upper detection cylinder is in sealed contact with the weighing cylinder and the piston is inside the weighing cylinder, a sealed detection chamber that can accommodate eggs is formed. The piston is driven to move inside the weighing cylinder by the lower linear actuator, changing the volume and air pressure of the detection chamber.

[0009] The cleaning mechanism includes a power pump, a storage tank, and a delivery pipeline. The storage tank contains a disinfectant pool and a cleaning water pool. The power pump selectively delivers the disinfectant stored in the disinfectant pool and the cleaning water stored in the cleaning water pool to the inlet pipe through the delivery pipeline.

[0010] The drying mechanism includes a fan and an air supply duct, with the fan connected to the air inlet pipe via the air supply duct.

[0011] Preferably, the screening mechanism further includes a lower water collection ring groove with an annular cavity, the lower water collection ring groove is fixedly installed on the frame, the bottom of the weighing cylinder is located in the lower water collection ring groove, and the output end of the lower linear actuator passes through the inner side of the lower water collection ring groove.

[0012] Preferably, the screening mechanism further includes a temperature sensor, which is fixedly installed on the upper detection cylinder and is used to detect the internal temperature of the upper detection cylinder.

[0013] Preferably, the system also includes a feeding conveyor, a qualified egg unloading machine, an unqualified egg unloading machine, and a robotic arm corresponding to each screening mechanism. The robotic arm is used to transport the eggs to be screened on the feeding conveyor to the weighing cylinder, transport the qualified eggs after testing to the qualified egg unloading machine, and transport the unqualified eggs after testing to the unqualified egg unloading machine.

[0014] Preferably, the robotic arm includes an end effector, which includes a negative pressure box, a pre-detection vacuum suction cup, a post-detection vacuum suction cup, a pre-detection negative pressure tube, and a post-detection negative pressure tube. The negative pressure box is fixedly connected to the robotic arm and is connected to a negative pressure source. The pre-detection vacuum suction cup is connected to the negative pressure box through the pre-detection negative pressure tube, and the post-detection vacuum suction cup is connected to the negative pressure box through the post-detection negative pressure tube. Negative pressure valves are installed on both the pre-detection negative pressure tube and the post-detection negative pressure tube.

[0015] Preferably, the screening mechanism is configured with at least two components. The infusion pipeline includes a disinfectant inlet pipe, a clean water inlet pipe, a two-position three-way solenoid valve, a main infusion pipeline, and branch infusion pipes. The two input ends of the two-position three-way solenoid valve are respectively connected to the disinfectant inlet pipe and the clean water inlet pipe. The input end of the disinfectant inlet pipe is located in the disinfectant pool, and the clean water inlet pipe is located in the clean water pool. The input end of the main infusion pipeline is connected to the output end of the two-position three-way solenoid valve. A power pump is connected in series on the main infusion pipeline. Branch infusion pipes corresponding to the inlet pipes are installed on the main infusion pipeline, and the output ends of the branch infusion pipes are connected to the inlet pipes. The air supply pipeline includes a main air supply pipe and multiple branch air supply pipes. The output end of the fan is connected to the main air supply pipe, and branch air supply pipes corresponding to the air inlet pipes are installed on the main air supply pipe, and the output ends of the branch air supply pipes are connected to the air inlet pipes.

[0016] Preferably, a flow sensor is installed on the branch infusion tube or inlet tube.

[0017] Preferably, the weighing cylinder has a flange at the top, which is connected to the detection end of the weighing sensor; a sealing ring is installed at the bottom of the upper detection cylinder, which is used to seal and cooperate with the flange.

[0018] Preferably, a flow guiding conical surface is provided inside the flanging, and a number of flow guiding ports are provided on the flow guiding conical surface.

[0019] The present invention also provides a method for preparing high-performance egg liquid by using the above-mentioned screening device for preparing high-performance egg liquid, including the following steps:

[0020] Step 1, raw material screening: Select eggs without breakage and with a clean surface. Screen the eggs. By placing the eggs in the bayonet, obtain the mass of the eggs through a weighing sensor. Drive the upper detection cylinder to descend through the upper linear actuator until it is in sealed contact with the weighing cylinder. Drive the piston to rise into the weighing cylinder through the lower linear actuator to form a closed detection cavity for accommodating the eggs. The initial volume and initial air pressure of the detection cavity are V1 and p1 respectively. Drive the piston to move inside the weighing cylinder through the lower linear actuator to change the volume and air pressure of the detection cavity. At this time, the volume and air pressure inside the detection cavity are V2 and p2 respectively. According to the ideal gas state equation pV = nRT, calculate the volume of the eggs. According to the density equation ρ = M / V, further calculate the relative density of the eggs; when ρ > 1.080, the eggs are determined to be qualified.

[0021] Step 2, cleaning and disinfection: The power pump transports the disinfectant stored in the disinfectant liquid pool to the liquid inlet pipe and the detection cavity through the infusion pipeline to submerge the eggs, and the eggs are soaked for 3 - 10 minutes; then drive the piston to descend and move out of the weighing cylinder through the lower linear actuator. The power pump transports the clean water stored in the clean water pool to the liquid inlet pipe and the detection cavity through the infusion pipeline to wash the eggs and remove bacteria, viruses and residual disinfectant on the eggshell surface.

[0022] Step 3, drying: After the eggs are cleaned, the fan transports air to the upper detection cylinder and the weighing cylinder through the air supply pipeline. The air contacts the eggs to dry the eggs and obtain dry and clean eggs.

[0023] Step 4, egg breaking and separation: Break the eggs in Step 2, filter the egg liquid, and separate impurities such as eggshell fragments and chalazae in the egg liquid to obtain a pure egg liquid base liquid.

[0024] Step 5, adding modifiers and auxiliary materials: Mix 0.2 - 0.3% of phospholipids, 0.7 - 0.8% of salt, and 7 - 8% of sucrose based on the total weight of the egg liquid base liquid with the egg liquid base liquid and stir evenly.

[0025] Step 6, homogenization: Homogenize the mixed egg liquid obtained in Step 4 by ultrasonic waves and perform vacuum degassing at the same time; the high-density ultrasonic power is​​Step 7, Sterilization: The mixed egg liquid obtained in Step 5 is sterilized by pasteurization at a water bath of 64-66℃ for 3.5-4 minutes;

[0027] Step 8, Inspection and Storage: Place the qualified mixed egg liquid product obtained in Step 6 into a refrigeration device at 0-4℃ for storage.

[0028] Compared with existing technologies, this technical solution has at least one of the following beneficial effects:

[0029] 1. Judging the quality of eggs by measuring their specific gravity is not affected by the subjective factors of the operator. It can accurately select relatively fresh eggs with intact internal components. This judgment standard is more scientific and accurate.

[0030] 2. The screening device can automate the feeding, screening, cleaning, drying and unloading of eggs, and each step is carried out continuously without the need for intermediate transfers, resulting in higher efficiency. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the screening device structure according to Embodiment 1 of the present invention;

[0032] Figure 2 for Figure 1 A magnified view of a portion of the image;

[0033] Figure 3 This is a cross-sectional view of the screening device according to Embodiment 1 of the present invention;

[0034] Figure 4 for Figure 3 A sectional view along line AA.

[0035] Figure 5 for Figure 4 Another state Figure 1 (Check the status of the eggs);

[0036] Figure 6 for Figure 4 Another state Figure 2 (The eggs are being washed or dried).

[0037] Figure 7 for Figure 4 Enlarged view of part B in the middle

[0038] Figure 8 This is a schematic diagram of the weighing cylinder.

[0039] In the diagram: 1. Frame; 2. Screening mechanism; 201. Screening frame; 202. Upper linear actuator; 203. Upper detection cylinder; 204. Pressure sensor; 205. Air inlet pipe; 206. Liquid inlet pipe; 207. Air inlet valve; 208. Liquid inlet valve; 209. Weighing sensor; 210. Weighing cylinder; 211. Piston; 212. Lower linear actuator; 213. Bayonet; 214. Detection chamber; 215. Lower water collection ring groove; 216. Temperature sensor; 217. Flanged edge; 218. Guide cone surface; 219. Guide port; 3. Cleaning mechanism; 31. Power pump; 32. Storage. 321. Liquid tank; 322. Disinfectant pool; 323. Cleaning water pool; 34. Disinfectant inlet pipe; 35. Cleaning water inlet pipe; 36. Two-position three-way solenoid valve; 37. Main infusion pipeline; 38. Branch infusion pipeline; 4. Flow sensor; 41. Drying mechanism; 42. Fan; 43. Main air supply pipe; 5. Branch air supply pipe; 6. Feeding conveyor; 7. Qualified egg unloading machine; 8. Unqualified egg unloading machine; 8. Robotic arm; 81. Negative pressure box; 82. Pre-detection vacuum suction cup; 83. Post-detection vacuum suction cup; 84. Pre-detection negative pressure pipe; 85. Post-detection negative pressure pipe; 86. Negative pressure valve. Detailed Implementation

[0040] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. Example 1

[0041] Please see Figures 1 to 8 This application provides a high-performance egg liquid preparation screening device, including a frame 1, a screening mechanism 2, a cleaning mechanism 3, a drying mechanism 4, a feeding conveyor 5, a qualified egg unloading machine 6, an unqualified egg unloading machine 7, and a robotic arm 8.

[0042] Please refer to Figure 1 Filtering mechanism 2 can be set to multiple settings; please refer to [link / reference]. Figure 2The screening mechanism 2 includes a screening frame 201, an upper linear actuator 202, an upper detection cylinder 203, a pressure sensor 204, an air inlet pipe 205, a liquid inlet pipe 206, an air inlet valve 207, a liquid inlet valve 208, a weighing sensor 209, a weighing cylinder 210, a piston 211, and a lower linear actuator 212. The screening frame 201 is fixedly mounted on the frame 1. The upper linear actuator 202 is a cylinder, but an electric cylinder or a hydraulic cylinder can also be used. The upper linear actuator 202 is fixedly mounted on the top of the frame 1. The top of the upper detection cylinder 203 is a closed structure, and the bottom of the upper detection cylinder 203 is an open structure. The top of the upper detection cylinder 203 is connected to the output end of the upper linear actuator 202. The upper detection cylinder 203 is equipped with a pressure sensor 204, an air inlet pipe 205, and a liquid inlet pipe 206. An air inlet valve 207 is installed on the air inlet pipe 205, and a liquid inlet valve 212 is installed on the liquid inlet pipe 206. 08. The weighing sensor 209 is fixedly installed on the screening rack 201. The weighing cylinder 210 is installed on the detection end of the weighing sensor 209. The weighing cylinder 210 is located directly below the upper detection cylinder 203. Both the upper and lower ends of the weighing cylinder 210 are open. The top of the weighing cylinder 210 forms a bayonet 213 to restrict the passage of eggs. The inner diameter of the bayonet 213 is 5 cm. The diameter of an egg is usually about 5.5 cm. The bayonet 213 can hold the egg, so that the lower part of the egg is inside the weighing cylinder 210. The inner diameter of the upper detection cylinder 203 is 7 cm, which can accommodate eggs. The lower linear actuator 212 is fixedly installed on the frame 1. A piston 211 is installed at the output end of the lower linear actuator 212. The piston 211 can move in and out of the weighing cylinder 210 under the drive of the lower linear actuator 212. When the piston 211 is inside the weighing cylinder 210, it is in a sliding seal connection with the weighing cylinder 210. Please refer to [link to relevant documentation]. Figure 5 The upper linear actuator 202 can drive the upper detection cylinder 203 to move to a position where it is in sealed contact with the weighing cylinder 210. When the upper detection cylinder 203 is in sealed contact with the weighing cylinder 210 and the piston 211 is located inside the weighing cylinder 210, a sealed detection chamber 214 that can accommodate an egg is formed. The detection chamber 214 includes portions where the liquid inlet valve 208 and the air inlet valve 207 are closed, and the liquid inlet pipe 206 and the air inlet pipe 205 are connected to the upper detection cylinder 203. The position of the piston 211 inside the weighing cylinder 210 varies. The volume of the detection chamber 214 varies. The position of the piston 211 within the weighing cylinder 210 is determined by the extension length of the output end of the lower linear actuator 212. The lower linear actuator 212 can be an electric cylinder or a servo cylinder, which can accurately output a preset displacement. Since the extension length of the output end of the lower linear actuator 212 can be determined, the volume of the detection chamber 214 can always be determined. The piston 211 is driven to move within the weighing cylinder 210 by the lower linear actuator 212, thereby changing the volume and air pressure of the detection chamber 214.

[0043] In the above description, the air pressure in the detection chamber 214 is detected by the air pressure sensor 204; based on the changes in the volume and air pressure inside the detection chamber 214 before and after the piston 211 moves, the volume of the egg can be calculated according to the ideal gas law pV=nRT; the weighing cylinder 210 and the upper detection cylinder 203 are made of copper, which has good thermal conductivity, so it is considered to be under isothermal compression; the weighing sensor 209 has obtained the mass of the egg, so the relative density of the egg can be calculated. When the relative density of the egg is greater than 1.080, the egg is considered qualified, thus distinguishing qualified eggs.

[0044] The specific gravity of an egg is closely related to the content and state of its internal components. Changes in specific gravity can reflect the loss of moisture, protein and fat breakdown, and other factors within the egg. When moisture evaporates or the nutritional composition changes, the specific gravity will change accordingly. For example, if an egg is stored for too long, moisture is lost, the density of the egg liquid decreases, and the specific gravity will also decrease. Therefore, specific gravity screening can effectively detect these changes in internal quality, while light screening mainly focuses on the external morphology of the egg's interior and is less able to detect subtle changes in internal components.

[0045] Experiments have shown that after a week of storage, the specific gravity of eggs may drop from about 1.085 to about 1.075. This change can be easily detected by specific gravity screening, while light screening may not detect this decline in internal quality when there are no obvious changes in the appearance of the eggs.

[0046] The cleaning mechanism 3 includes a power pump 31, a storage tank 32, and infusion pipelines. The storage tank 32 contains a disinfectant pool 321 and a cleaning water pool 322. The power pump 31 selectively delivers the disinfectant stored in the disinfectant pool 321 and the cleaning water stored in the cleaning water pool 322 to the inlet pipe 206 via the infusion pipelines. The disinfectant stored in the disinfectant pool 321 is a sodium hypochlorite solution with a concentration of 150 mg / L. The infusion pipelines include a disinfectant inlet pipe 33, a cleaning water inlet pipe 34, a two-position three-way solenoid valve 35, a main infusion pipeline 36, and branch infusion pipes 37. The two input ends of the solenoid valve 35 are connected to the disinfectant inlet pipe 33 and the cleaning water inlet pipe 34, respectively. The input end of the disinfectant inlet pipe 33 is located in the disinfection water tank, and the cleaning water inlet pipe 34 is located in the cleaning water tank 322. The input end of the main inlet pipe 36 is connected to the output end of the two-position three-way solenoid valve 35. The power pump 31 is connected in series on the main inlet pipe 36. The main inlet pipe 36 is equipped with branch inlet pipes 37 that correspond one-to-one with the inlet pipe 206. The output end of the branch inlet pipe 37 is connected to the inlet pipe 206. A flow sensor 38 is installed on the branch inlet pipe 37 or the inlet pipe 206.

[0047] In the above description, after completing the testing of the eggs, please refer to... Figure 5The inlet valve 208 corresponding to qualified eggs is opened, and the inlet valve 208 of unqualified eggs can also be opened simultaneously. The two-position three-way solenoid valve 35 connects the disinfectant inlet pipe 33 and the main inlet pipe 36. Under the action of the power pump 31, the disinfectant stored in the disinfectant pool 321 enters the disinfectant inlet pipe 33, the main inlet pipe, the branch inlet pipe 37, the inlet pipe 206, and the detection chamber 214 in sequence. The flow sensor 38 detects the flow rate of the entering liquid. When the flow rate reaches the preset value, the controller controls the corresponding inlet valve 208 to close. The controller is electrically connected to each electrical component of the screening device in this embodiment. The controller has a preset control program that can control the screening operation to proceed automatically. The inlet valve 208 is a solenoid valve or an electric valve, which can be automatically opened and closed by the preset program of the controller. The air inlet valve 207 can be in the open state to balance the air pressure and facilitate the entry of disinfectant into the detection chamber 214. After the eggs are soaked in the disinfectant for a preset time, please refer to [link to relevant documentation]. Figure 6 The lower linear actuator drives the piston 211 to descend to the position away from the weighing cylinder 210, and the disinfectant water in the detection chamber 214 is automatically discharged. Subsequently, the two-position three-way solenoid valve 35 connects the cleaning water inlet pipe 34 and the main infusion pipe 36. Under the action of the power pump 31, the cleaning water stored in the cleaning water pool 322 enters the cleaning water inlet pipe 34, the main infusion pipe, the branch infusion pipe 37, the inlet pipe 206, and the detection chamber 214 in sequence to clean qualified eggs or all eggs that have been tested.

[0048] The drying mechanism 4 includes a fan 41 and an air supply duct. The fan 41 is connected to the air inlet pipe 205 via the air supply duct. The air supply duct includes a main air supply pipe 42 and multiple branch air supply pipes 43. The output end of the fan 41 is connected to the main air supply pipe 42. The main air supply pipe 42 is equipped with branch air supply pipes 43 that correspond one-to-one with the air inlet pipe 205. The output ends of the branch air supply pipes 43 are connected to the air inlet pipe 205. After the eggs are washed, the liquid inlet valve 208 is closed and the air inlet valve 207 is opened. The fan 41 delivers pressurized air to the main air supply pipe 42, the branch air supply pipes 43, the air inlet pipe 205, the upper detection cylinder 203, and the weighing cylinder 210. The air comes into contact with the eggs and dries them, resulting in dry and clean eggs.

[0049] To facilitate the collection of disinfectant and cleaning water used for cleaning eggs, the screening mechanism 2 also includes a lower water collection ring trough 215 with an annular cavity. The lower water collection ring trough 215 is fixedly installed on the frame 1, and the bottom of the weighing cylinder 210 is located in the lower water collection ring trough 215. The output end of the lower linear actuator 212 passes through the inner side of the lower water collection ring trough 215. The bottom of the lower water collection ring trough 215 is provided with branch drain pipes, and each branch drain pipe is connected to the main drain pipe. The disinfectant and cleaning water used for cleaning eggs flows into the annular cavity of the lower water collection ring trough 215 from the weighing cylinder 210. The piston 211 can cover the circular hole formed in the center of the lower water collection ring trough 215 to prevent water from contacting the lower linear actuator 212. The wastewater in the annular cavity of the lower water collection ring trough 215 enters the main drain pipe through the branch drain pipes and is finally discharged from the main drain pipe.

[0050] In some implementations, to facilitate the detection of the temperature inside the detection chamber 214, the screening mechanism 2 also includes a temperature sensor 216. The temperature sensor 216 is fixedly mounted on the upper detection cylinder 203 and is used to detect the internal temperature of the upper detection cylinder 203. When the piston 211 changes the volume of the detection chamber 214, the temperature inside the detection chamber 214 will change to a certain extent. By detecting the temperature of the detection chamber 214, based on the ideal gas law pV=nRT, the volume of the egg can be accurately detected.

[0051] In some implementations, for automated loading and unloading, please refer to [link / reference]. Figure 1 A robotic arm 8 is configured to correspond one-to-one with the screening mechanism 2. The robotic arm 8 is responsible for loading and unloading eggs from the corresponding screening mechanism 2. It transports eggs to be screened from the loading conveyor 5 to the weighing cylinder 210, conveys qualified eggs to the qualified egg unloading machine 6, and conveys unqualified eggs to the unqualified egg unloading machine 7. The loading conveyor 5, qualified egg unloading machine 6, and unqualified egg unloading machine 7 are all belt conveyors, arranged parallel and adjacent to each other. The robotic arm 8 is a multi-axis robot of existing technology, capable of multi-degree-of-freedom movement. Combined with a vision inspection module, it can accurately pick up eggs.

[0052] Please see Figure 1 The robotic arm 8 includes an end effector, which comprises a negative pressure box 81, a pre-detection vacuum suction cup 82, a post-detection vacuum suction cup 83, a pre-detection negative pressure tube 84, and a post-detection negative pressure tube 85. The negative pressure box 81 is fixedly connected to the robotic arm 8 and is connected to a negative pressure source, which can be a vacuum generator. The pre-detection vacuum suction cup 82 is connected to the negative pressure box 81 through the pre-detection negative pressure tube 84, and the post-detection vacuum suction cup 83 is connected to the negative pressure box 81 through the post-detection negative pressure tube 85. Please refer to [link / reference]. Figure 3Negative pressure valves 86 are installed on both the pre-test negative pressure pipe 84 and the post-test negative pressure pipe 85. The robotic arm 8 uses the pre-test vacuum suction cup 82 to transfer uncleaned eggs from the feeding conveyor 5 to the weighing cylinder 210, or to transfer unqualified eggs that have been tested but not cleaned to the unqualified egg unloading machine 7. The robotic arm 8 uses the post-test vacuum suction cup 83 to transfer cleaned eggs that have been tested to the qualified egg unloading machine 6, or to transfer unqualified eggs that have been tested and cleaned to the unqualified egg unloading machine 7. That is, the pre-test vacuum suction cup 82 only contacts uncleaned eggs, and the post-test vacuum suction cup 83 only contacts cleaned eggs. This avoids contamination of cleaned eggs when transferring them due to having only one vacuum suction cup, ensuring the cleanliness of the eggs. By controlling the opening and closing of the corresponding negative pressure valves 86, the pre-test vacuum suction cup 82 and the post-test vacuum suction cup 83 can switch between operations.

[0053] To facilitate the weighing sensor 209 in detecting the weight of the weighing cylinder 210, the weighing sensor 209 is a ring-shaped weighing sensor 209, and the weighing cylinder 210 is inserted inside the weighing sensor 209. To facilitate the weighing sensor 209 in supporting the weighing cylinder 210, the top of the weighing cylinder 210 is provided with a flange 217, which is connected to the detection end of the weighing sensor 209.

[0054] To ensure a seal when the upper detection cylinder 203 contacts the weighing cylinder 210, a sealing ring is installed at the bottom of the upper detection cylinder 203. The sealing ring is used to make sealing contact with the flange 217.

[0055] To prevent excessive water residue on the flange 217 from affecting the drying efficiency of the weighing cylinder 210, a guide cone surface 218 is provided on the inner side of the flange 217. The guide cone surface 218 has several guide ports 219, which are circumferentially distributed on the inner wall of the weighing cylinder 210. The outer diameter of the guide cone surface 218 is the same as the inner diameter of the sealing ring. When the upper detection cylinder 203 and the weighing cylinder 210 are in sealed contact, the guide cone surface 218 is located inside the sealing ring. When washing eggs, the washing water enters the upper detection cylinder 203 and the weighing cylinder 210, and can easily remain on the flange 217. The guide cone surface 218 allows the water to flow downwards under gravity, preventing excessive water residue on the flange 217 and avoiding increased drying time for the eggs and the weighing cylinder 210. When an egg gets stuck in slot 213, the connection area between the upper detection cylinder 203 and the weighing cylinder 210 becomes smaller, affecting the flow of water and air. Setting up a guide port 219 can increase the connection area between the upper detection cylinder 203 and the weighing cylinder 210, increase the flow of water and air, and thus improve the cleaning and drying efficiency. Example 2

[0056] This embodiment also provides a method for preparing high-performance egg liquid using the above-mentioned high-performance egg liquid preparation screening device, including the following steps:

[0057] Step 1, Raw Material Screening: Select undamaged and clean eggs for screening. Place the eggs in slot 213 and obtain the egg mass M0 through weighing sensor 209. Drive the upper detection cylinder 203 to descend until it is in sealed contact with the weighing cylinder 210 through the upper linear actuator 202. Drive the piston 211 to rise into the weighing cylinder 210 through the lower linear actuator 212, forming a sealed detection chamber 214 to accommodate the eggs. The initial volume and initial air pressure of the detection chamber 214 are V1 and p1, respectively. Drive the piston 211 to move slowly within the weighing cylinder 210 through the lower linear actuator 212, changing the volume and air pressure of the detection chamber 214. Slow movement within 10 minutes can minimize changes to the temperature of the detection chamber 214. At this time, the volume and pressure of the detection chamber 214 are V2 and p2, respectively. According to the ideal gas law pV=nRT, where p is pressure, V is gas volume, T is temperature, n is the amount of substance of the gas, and R is the molar gas constant, the volume V0 of the egg is calculated. According to the density equation ρ=M / V, where M is the weight of the object and V is the volume of the object, the relative density of the egg ρ=M0 / V0 is calculated. When ρ>1.080, the egg is considered qualified. For details on the calculation principle, please refer to the patent with publication number CN208579750U, entitled "Device for Measuring the Volume of Irregular Objects with Gas".

[0058] Step 2, Cleaning and Disinfection: The power pump 31 delivers the disinfectant stored in the disinfectant tank 321 to the inlet pipe 206 and the detection chamber 214 via the infusion pipeline, immersing the eggs for 3-10 minutes. Then, the lower linear actuator 212 drives the piston 211 to descend and move out of the weighing cylinder 210. The power pump 31 delivers the clean water stored in the clean water tank 322 to the inlet pipe 206 and the detection chamber 214 via the infusion pipeline to rinse the eggs, removing bacteria, viruses, and residual disinfectant from the eggshell surface. Specifically, the inlet valve 208 opens, and the two-position three-way solenoid valve 35 connects the disinfectant inlet pipe 33 to the main infusion pipeline 36. Under the action of the power pump 31, the disinfectant stored in the disinfectant tank 321 sequentially enters... The disinfectant is drawn into the inlet pipe 33, the main infusion pipe, the branch infusion pipe 37, and the detection chamber 214 of the inlet pipe 206. The flow sensor 38 detects the flow rate of the liquid entering the pipe. When the flow rate reaches a preset value, the controller controls the corresponding inlet valve 208 to close. After the eggs are soaked in the disinfectant for a preset time, the lower linear actuator drives the piston 211 to descend to the position away from the weighing cylinder 210, and the disinfectant in the detection chamber 214 is automatically discharged. Subsequently, the two-position three-way solenoid valve 35 connects the cleaning water inlet pipe 34 and the main infusion pipe 36. Under the action of the power pump 31, the cleaning water stored in the cleaning water pool 322 enters the cleaning water inlet pipe 34, the main infusion pipe, the branch infusion pipe 37, and the detection chamber 214 of the inlet pipe 206 in sequence to clean the eggs.

[0059] Step 3: After the eggs are cleaned, the liquid inlet valve 208 is closed and the air inlet valve 207 is opened. The blower 41 delivers pressurized air to the main air supply pipe 42, the branch air supply pipe 43, the air inlet pipe 205, the upper detection cylinder 203, and the weighing cylinder 210. The air comes into contact with the eggs and dries them, resulting in dry and clean eggs.

[0060] Step 4, Egg Separation: Crack the eggs from Step 2, filter the egg liquid, and separate impurities such as eggshell fragments and chalazae to obtain a pure egg liquid base.

[0061] Step 5: Add improvers and additives: Mix 0.3% phospholipids, 0.8% salt, and 8% sucrose by weight of the egg liquid base with the egg liquid base and stir well.

[0062] Step 6, Homogenization: The mixed egg liquid obtained in Step 4 is homogenized by ultrasound while being degassed by vacuum. The high-density ultrasound power is 220W, the ultrasound time is 10 minutes, and the ultrasound is performed in a 3-second interval between 3 seconds to further refine the fat globules and other particles in the egg liquid and improve the emulsion stability of the egg liquid.

[0063] Step 7, Sterilization: The mixed egg liquid obtained in Step 5 is sterilized by pasteurization at a water bath of 64-66℃ for 3.5-4 minutes;

[0064] Step 8, Inspection and Storage: Place the qualified mixed egg liquid product obtained in Step 6 into a refrigeration device at 0-4℃ for storage. Example 3

[0065] This embodiment is largely the same as embodiment 2, except that in step four, an improver and auxiliary materials are added: 0.2% of the total weight of the egg liquid base liquid, 0.7% of the salt, and 7% of the sucrose are mixed and stirred evenly with the egg liquid base liquid.

[0066] Comparative experiments were conducted between the high-performance egg liquid prepared in Examples 2 and 3 and ordinary egg liquid. The results showed that the high-performance egg liquid prepared in this invention was significantly superior to ordinary egg liquid in terms of emulsification, foaming, and gelation, and could better meet the requirements of the food industry for high-performance egg liquid.

[0067] It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept, and these all fall within the scope of protection of this invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

[0068] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0069] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0070] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

Claims

1. A high-performance egg liquid preparation screening device, comprising a frame (1), characterized in that, It also includes a screening mechanism (2), a cleaning mechanism (3), and a drying mechanism (4); The screening mechanism (2) includes a screening frame (201), an upper linear actuator (202), an upper detection cylinder (203), a pressure sensor (204), an air inlet pipe (205), a liquid inlet pipe (206), an air inlet valve (207), a liquid inlet valve (208), a weighing sensor (209), a weighing cylinder (210), a piston (211), and a lower linear actuator (212). The screening frame (201) is fixedly installed on the frame (1), the upper linear actuator (202) is fixedly installed on the top of the frame (1), and the upper detection cylinder (209) is fixedly installed on the top of the frame (1). 3) The top is a closed structure, and the lower end of the upper detection cylinder (203) is an open structure. The top of the upper detection cylinder (203) is connected to the output end of the upper linear actuator (202). A pressure sensor (204), an air inlet pipe (205), and a liquid inlet pipe (206) are installed on the upper detection cylinder (203). An air inlet valve (207) is installed on the air inlet pipe (205), and a liquid inlet valve (208) is installed on the liquid inlet pipe (206). A load cell (209) is fixedly installed on the screening rack (201), and the weighing cylinder (210) is installed on the load cell (209). On the detection end of 209), the weighing cylinder (210) is located directly below the upper detection cylinder (203). Both the upper and lower ends of the weighing cylinder (210) are open. The top of the weighing cylinder (210) forms a bayonet (213) to restrict the passage of the egg. The lower linear actuator (212) is fixedly installed on the frame (1). A piston (211) is installed at the output end of the lower linear actuator (212). The piston (211) can enter and exit the weighing cylinder (210) under the drive of the lower linear actuator (212). The piston (211) is located at the weighing cylinder (219). 0) When inside, it is in sliding and sealed connection with the weighing cylinder (210). The upper linear actuator (202) can drive the upper detection cylinder (203) to move to the position of sealing contact with the weighing cylinder (210). When the upper detection cylinder (203) is in sealed contact with the weighing cylinder (210) and the piston (211) is located inside the weighing cylinder (210), a sealed detection chamber (214) that can accommodate an egg is formed. The piston (211) is driven to move inside the weighing cylinder (210) by the lower linear actuator (212), changing the volume and air pressure of the detection chamber (214). The cleaning mechanism (3) includes a power pump (31), a storage tank (32) and a delivery pipeline. The storage tank (32) is equipped with a disinfectant pool (321) and a cleaning water pool (322). The power pump (31) selectively delivers the disinfectant stored in the disinfectant pool (321) and the cleaning water stored in the cleaning water pool (322) to the inlet pipe (206) through the delivery pipeline. The drying mechanism (4) includes a fan (41) and an air supply pipe. The fan (41) is connected to the air inlet pipe (205) through the air supply pipe.

2. The high-performance egg liquid preparation screening device according to claim 1, characterized in that, The screening mechanism (2) also includes a lower water collection ring groove (215) with an annular cavity. The lower water collection ring groove (215) is fixedly installed on the frame (1). The bottom of the weighing cylinder (210) is located in the lower water collection ring groove (215). The output end of the lower linear actuator (212) passes through the inner side of the lower water collection ring groove (215).

3. The high-performance egg liquid preparation screening device according to claim 1, characterized in that, The screening mechanism (2) also includes a temperature sensor (216), which is fixedly installed on the upper detection cylinder (203) and is used to detect the internal temperature of the upper detection cylinder (203).

4. The high-performance egg liquid preparation screening device according to claim 1, characterized in that, It also includes a feeding conveyor (5), a qualified egg unloading machine (6), an unqualified egg unloading machine (7), and a robot (8) corresponding to the screening mechanism (2). The robot (8) is used to transport the eggs to be screened on the feeding conveyor (5) to the weighing cylinder (210), to transport the qualified eggs after the test to the qualified egg unloading machine (6), and to transport the unqualified eggs after the test to the unqualified egg unloading machine (7).

5. The high-performance egg liquid preparation screening device according to claim 4, characterized in that, The robotic arm (8) includes an end effector, which includes a negative pressure box (81), a pre-detection vacuum suction cup (82), a post-detection vacuum suction cup (83), a pre-detection negative pressure tube (84), and a post-detection negative pressure tube (85). The negative pressure box (81) is fixedly connected to the robotic arm (8) and is connected to a negative pressure source. The pre-detection vacuum suction cup (82) is connected to the negative pressure box (81) through the pre-detection negative pressure tube (84), and the post-detection vacuum suction cup (83) is connected to the negative pressure box (81) through the post-detection negative pressure tube (85). Negative pressure valves (86) are installed on both the pre-detection negative pressure tube (84) and the post-detection negative pressure tube (85).

6. The high-performance egg liquid preparation screening device according to claim 5, characterized in that, The screening mechanism (2) is configured with at least two components. The infusion pipeline includes a disinfectant inlet pipe (33), a clean water inlet pipe (34), a two-position three-way solenoid valve (35), a main infusion pipeline (36), and a branch infusion pipeline (37). The two input ends of the two-position three-way solenoid valve (35) are respectively connected to the disinfectant inlet pipe (33) and the clean water inlet pipe (34). The input end of the disinfectant inlet pipe (33) is located in the disinfectant pool, and the clean water inlet pipe (34) is located in the clean water pool (322). The input end of the main infusion pipeline (36) is connected to the output end of the two-position three-way solenoid valve (35). The power pump (31) is connected in series on the main infusion pipeline (36). The main infusion pipeline (36) is equipped with branch infusion pipes (37) that correspond one-to-one with the infusion pipe (206). The output end of the branch infusion pipe (37) is connected to the infusion pipe (206). The air supply pipeline includes the main air supply pipe (42) and multiple branch air supply pipes (43). The output end of the fan (41) is connected to the main air supply pipe (42). The main air supply pipe (42) is equipped with branch air supply pipes (43) that correspond one-to-one with the air infusion pipe (205). The output end of the branch air supply pipe (43) is connected to the air infusion pipe (205).

7. The high-performance egg liquid preparation screening device according to claim 6, characterized in that, A flow sensor (38) is installed on the branch infusion tube (37) or the inlet tube (206).

8. The high-performance egg liquid preparation screening device according to claim 1, characterized in that, The weighing cylinder (210) has a flange (217) at the top, which is connected to the detection end of the weighing sensor (209); the upper detection cylinder (203) has a sealing ring installed at the bottom, which is used to seal and contact the flange (217).

9. The high-performance egg liquid preparation screening device according to claim 8, characterized in that, The inner side of the flange (217) is provided with a flow guide cone (218), and a number of flow guide ports (219) are provided on the flow guide cone (218).

10. A method for preparing high-performance egg liquid using the screening device for preparing high-performance egg liquid according to any one of claims 1 to 9, characterized in that, Includes the following steps: Step 1, Raw Material Screening: Select undamaged and clean eggs and screen them by placing the eggs in the slot (213). The weight of the eggs is obtained by the weighing sensor (209). The upper detection cylinder (203) is driven down by the upper linear actuator (202) until it is in sealed contact with the weighing cylinder (210). The piston (211) is driven up by the lower linear actuator (212) into the weighing cylinder (210), forming a sealed detection chamber (214) to contain the eggs. 14) The initial volume and initial pressure are V1 and p1, respectively. The piston (211) is driven to move in the weighing cylinder (210) by the lower linear actuator (212), changing the volume and pressure of the detection chamber (214). At this time, the volume and pressure of the detection chamber (214) are V2 and p2, respectively. According to the ideal gas law pV=nRT, the volume of the egg is calculated. According to the density equation ρ=M / V, the relative density of the egg is calculated. When ρ>1.080, the egg is considered qualified. Step 2, Cleaning and Disinfection: The power pump (31) delivers the disinfectant stored in the disinfectant pool (321) to the inlet pipe (206) and the detection chamber (214) corresponding to the qualified eggs through the inlet pipe, immersing the eggs for 3-10 minutes; then the lower linear actuator (212) drives the piston (211) to descend and move out of the weighing cylinder (210), and the power pump (31) delivers the clean water stored in the clean water pool (322) to the inlet pipe (206) and the detection chamber (214) through the inlet pipe to rinse the eggs and remove bacteria, viruses and residual disinfectant from the surface of the eggshell; Step 3, Drying: After the eggs are cleaned, the blower (41) delivers air to the upper detection cylinder (203) and weighing cylinder (210) through the air supply pipe. The air comes into contact with the eggs and dries them, resulting in dry and clean eggs. Step 4, Egg Separation: Crack the eggs from Step 2, filter the egg liquid, and separate impurities such as eggshell fragments and chalazae to obtain a pure egg liquid base. Step 5: Add improvers and excipients; Step 6: Homogenize; Step 7: Sterilization.

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