Preparation method of high-performance egg liquid and screening device for preparation

Abstract

The invention discloses a preparation method of high-performance egg liquid and a screening device for preparation. The screening device comprises a rack, a screening mechanism, a cleaning mechanism, a drying mechanism, a feeding conveyor, a qualified egg discharging machine, an unqualified egg discharging machine and a mechanical arm. The screening mechanism comprises a screening frame, an upper linear execution element, an upper detection cylinder, an air 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 execution element, the cleaning mechanism comprises a power pump, a liquid storage tank and a liquid conveying pipeline, the drying mechanism comprises a fan and an air supply pipeline, and the fan is communicated with the air inlet pipe through the air supply pipeline. The quality of the eggs is judged by measuring the specific gravity of the eggs, the relatively fresh eggs with complete internal components can be accurately selected, and the judgment standard is more scientific and accurate; according to the screening device, automatic feeding, screening, cleaning, drying and discharging of eggs can be achieved, all the steps are continuously carried out, transfer time is not needed, and efficiency is higher.

Description

Technical Field

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

[0002] As an important food raw material, egg liquid is widely used in many fields such as baking, cooking, and food processing. In baked foods, egg liquid can give the product good color, flavor, and structure; 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 dishes; in food processing, such as the production of emulsified products such as mayonnaise and salad dressing, the emulsification performance of egg liquid is a key factor. With the continuous development of the food industry, the requirements for the performance of egg liquid are increasing. Not only does the egg liquid need to have good basic properties, such as appropriate viscosity and pure flavor, but it is also expected to have excellent performance in functional properties such as emulsification, foaming, and gelling to meet the needs of diversified and high-quality food production.

[0003] In the field of high-performance egg liquid preparation, the quality difference of eggs plays a decisive role in the performance of the final egg liquid. The egg screening link is of key significance in the entire process. The freshness of eggs has a profound impact on the performance of egg liquid. As the storage time of eggs increases, a series of physical and chemical changes will occur inside them. On the one hand, water will gradually dissipate, causing the concentration of egg liquid to change, which in turn affects its fluidity and ability to interact with other ingredients; on the other hand, protein will denature and degrade, and the fat in the yolk may also oxidize. These changes will seriously weaken the emulsification, foaming and gelling properties of the egg liquid. Through specific screening methods, such as screening out eggs with a specific gravity greater than 1.080, it can be ensured to a large extent that the selected eggs have a high degree of freshness. Because the specific gravity is closely related to the content and freshness of the internal substances of the egg, a higher specific gravity often indicates that the internal structure of the egg is intact, the ratio of egg white and egg yolk is reasonable, and the nutrients are not lost in large quantities, which can provide a stable and high-quality raw material basis for high-performance egg liquid.

[0004] The surface of eggs carries a variety of microorganisms and contaminants. If the surface of eggs is not cleaned, bacteria can easily mix into the egg liquid during the beating process, which will affect the quality of the egg liquid. It may also cause the product to deteriorate and corrupt during subsequent processing and storage, shorten the shelf life of the product and affect consumer health.

[0005] In summary, in the preparation of high-performance egg liquid, egg screening is a crucial pre-process. In the preparation of high-performance egg liquid in the prior art, light screening is generally used, but light screening of eggs depends to a large extent on the experience and subjective judgment of the operator. Different operators may have different understandings and judgments of standards such as air chamber size, yolk state, and egg white state. For example, for eggs with slightly blurred yolk outlines, some operators may consider it an acceptable slight change, while others may judge it as unqualified. This subjectivity will lead to inconsistency in screening results and reduce the accuracy and reliability of the screening process. It is difficult to detect subtle changes in the internal components of eggs through light screening, and the manual light inspection method is inefficient. Summary of the invention

[0006] Based on this, it is necessary to provide a method for preparing high-performance egg liquid and a screening device for preparing the same in order to solve the above-mentioned technical problems.

[0007] In order to achieve the above-mentioned object, the present invention provides a high-performance screening device for preparing egg liquid, comprising a frame, a screening mechanism, a cleaning mechanism, and a drying mechanism; The screening mechanism comprises a screening frame, an upper linear actuator, an upper detection cylinder, an air 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 screening frame is fixedly mounted on the frame, the upper linear actuator is fixedly mounted on the top of the frame, the top of the upper detection cylinder is a closed structure, the lower end of the upper detection cylinder is an open structure, the top of the upper detection cylinder is connected to the output end of the upper linear actuator, the upper detection cylinder is equipped with an air pressure sensor, an air inlet pipe, and a liquid inlet pipe, the air inlet pipe is equipped with an air inlet valve, the liquid inlet pipe is equipped with a liquid inlet valve, the weighing sensor is fixedly mounted on the screening frame, the weighing cylinder is mounted on the detection end of the weighing sensor, and the weighing cylinder Located directly below the upper detection cylinder, the upper and lower ends of the weighing cylinder are both open structures, a bayonet for limiting the passage of eggs is formed at the top of the weighing cylinder, the lower linear actuator is fixedly installed on the frame, a piston is installed at the output end of the lower linear actuator, the piston can enter and exit the weighing cylinder under the drive of the lower linear actuator, the piston is slidingly and sealingly connected with the weighing cylinder when it is inside the weighing cylinder, the upper linear actuator can drive the upper detection cylinder to move to a position in sealing contact with the weighing cylinder, when the upper detection cylinder is in sealing contact with the weighing cylinder and the piston is inside the weighing cylinder, a closed detection chamber that can accommodate eggs is formed, the piston is driven by the lower linear actuator to move in the weighing cylinder, and the volume and air pressure of the detection chamber are changed; The cleaning mechanism includes a power pump, a liquid storage tank and a liquid infusion pipeline. The liquid storage tank is provided with 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 liquid inlet pipe through the liquid infusion pipeline. The drying mechanism comprises a fan and an air supply duct, and the fan is connected with the air inlet pipe through the air supply duct.

[0008] Preferably, the screening mechanism further comprises a lower water collecting ring groove having an annular cavity, the lower water collecting ring groove is fixedly mounted on the frame, the bottom of the weighing cylinder is located in the lower water collecting ring groove, and the output end of the lower linear actuator passes through the inner side of the lower water collecting ring groove.

[0009] Preferably, the screening mechanism further comprises a temperature sensor, which is fixedly mounted on the upper detection cylinder and is used to detect the internal temperature of the upper detection cylinder.

[0010] Preferably, it also includes a loading conveyor, a qualified egg feeding machine, an unqualified egg feeding machine and a robot corresponding to the screening mechanism one by one, the robot is used to transport the eggs to be screened on the loading conveyor to the weighing cylinder, transport the qualified eggs after testing to the qualified egg feeding machine, and transport the unqualified eggs after testing to the unqualified egg feeding machine.

[0011] Preferably, the manipulator 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 manipulator, and the negative pressure box 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 the pre-detection negative pressure tube and the post-detection negative pressure tube.

[0012] Preferably, at least two of the screening mechanisms are provided, and the infusion pipeline comprises a disinfectant suction pipe, a clean water suction pipe, a two-position three-way solenoid valve, a main infusion pipeline, and a branch infusion pipe. The two input ends of the two-position three-way solenoid valve are respectively connected with the disinfectant suction pipe and the clean water suction pipe, the input end of the disinfectant suction pipe is located in the disinfection water pool, and the clean water suction pipe is located in the clean water pool. The input end of the main infusion pipeline is connected with the output end of the two-position three-way solenoid valve, the power pump is connected in series to the main infusion pipeline, and branch infusion pipes corresponding to the inlet pipes are installed on the main infusion pipeline, and the output end of the branch infusion pipe is connected with the inlet pipe; the air supply pipeline comprises a main air supply pipe and multiple branch air supply pipes, the output end of the fan is connected with 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 end of the branch air supply pipe is connected with the air inlet pipe.

[0013] Preferably, a flow sensor is installed on the branch infusion tube or the liquid inlet tube.

[0014] Preferably, the top of the weighing cylinder is provided with a flange, which is connected to the detection end of the weighing sensor; the bottom end of the upper detection cylinder is equipped with a sealing ring, which is used for sealing contact with the flange.

[0015] Preferably, a guide cone surface is provided on the inner side of the flange, and a plurality of guide ports are provided on the guide cone surface.

[0016] The present invention also provides a method for preparing high-performance liquid egg using the screening device for preparing high-performance liquid egg, comprising the following steps: Step 1, raw material screening: select eggs with no damage and clean surface, screen the eggs, place the eggs in the bayonet, obtain the egg mass through the weighing sensor, drive the upper detection cylinder down to the weighing cylinder through the upper linear actuator, drive the piston up to the weighing cylinder through the lower linear actuator, and form a closed detection chamber for accommodating the eggs. The initial volume and initial air pressure of the detection chamber are V1 and p1 respectively. The piston is driven by the lower linear actuator to move in the weighing cylinder to change the volume and air pressure of the detection chamber. At this time, the volume and air pressure of the detection chamber are V2 and p2 respectively. According to the ideal gas state equation pV=nRT, the volume of the egg is calculated, and 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 delivers the disinfectant stored in the disinfectant pool to the liquid inlet pipe and the detection chamber through the infusion pipeline, immerses the eggs, and the eggs are soaked for 3-10 minutes; then the lower linear actuator drives the piston to descend and move out the weighing cylinder, and the power pump delivers the clean water stored in the clean water pool to the liquid inlet pipe and the detection chamber through the infusion pipeline to rinse the eggs and remove bacteria, viruses and residual disinfectant on the eggshell surface; Step 3, drying: After the eggs are washed, the fan conveys air to the upper detection cylinder and the weighing cylinder through the air supply duct. The air contacts the eggs and blows them dry to obtain dry and clean eggs. Step 4, breaking the eggs and separating them: breaking the eggs in step 2, filtering the egg liquid, separating the eggshell fragments, ligaments and other impurities in the egg liquid, and obtaining a pure egg liquid base liquid; Step 5, adding improvers and auxiliary materials: 0.2-0.3% of the total weight of the egg liquid base liquid phospholipids, 0.7-0.8% of salt, and 7-8% of sucrose are mixed with the egg liquid base liquid and stirred evenly; Step 6, homogenization: homogenize the mixed egg liquid obtained in step 4 by ultrasonic wave, and perform vacuum degassing at the same time; high-density ultrasonic power is 200-250W, ultrasonic time is 8-12 minutes, and ultrasonic wave is performed for 3 seconds and 3 seconds on the interval, so that the particles such as fat globules in the egg liquid are further refined and the emulsification stability of the egg liquid is improved; Step 7, sterilization: the mixed egg liquid obtained in step 5 is sterilized by pasteurization in a water bath at 64-66°C for 3.5-4 minutes; Step 8, testing and storage: the qualified mixed egg liquid product obtained in step 6 is stored in a refrigerated device at 0-4°C.

[0017] Compared with the prior art, this technical solution has at least one of the following beneficial effects: 1. The quality of eggs is judged by measuring their specific gravity. The measurement result is not affected by the subjective factors of the operator. It can accurately select relatively fresh eggs with complete internal ingredients. This judgment standard is more scientific and accurate. 2. The screening device can realize the automatic loading, screening, cleaning, drying and unloading of eggs, and each step is carried out continuously without time-consuming transfer, which is more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a screening device according to Example 1 of the present invention; Figure 2 for Figure 1 A partial enlarged schematic diagram of Figure 3 is a cross-sectional view of a screening device according to Example 1 of the present invention; Figure 4 for Figure 3 Sectional view along line AA; Figure 5 for Figure 4 Another state of Figure 1 (Test the status of eggs); Figure 6 for Figure 4 Another state of Figure 2 (Eggs are washed or dried); Figure 7 for Figure 4 A partial enlarged view of point B in the middle Figure 8 It is a structural schematic diagram of a weighing cylinder; In the figure, 1, frame; 2, screening mechanism; 201, screening frame; 202, upper linear actuator; 203, upper detection cylinder; 204, air 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 collecting ring groove; 216, temperature sensor; 217, flange; 218, guide cone; 219, guide port; 3, cleaning mechanism; 31, power pump; 32, storage Liquid tank; 321, disinfectant tank; 322, clean water tank; 33, disinfectant suction pipe; 34, clean water suction pipe; 35, two-position three-way solenoid valve; 36, main infusion pipeline; 37, branch infusion pipe; 38, flow sensor; 4, drying mechanism; 41, fan; 42, main air supply pipe; 43, branch air supply pipe; 5, feeding conveyor; 6, qualified egg feeding machine; 7, unqualified egg feeding machine; 8, manipulator; 81, negative pressure box; 82, vacuum suction cup before detection; 83, vacuum suction cup after detection; 84, negative pressure pipe before detection; 85, negative pressure pipe after detection; 86, negative pressure valve. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below. Example 1

[0020] See also Figures 1 to 8 The embodiment of the present application provides a high-performance screening device for preparing egg liquid, including a frame 1, a screening mechanism 2, a cleaning mechanism 3, a drying mechanism 4, a feeding conveyor 5, a qualified egg feeding machine 6, an unqualified egg feeding machine 7 and a manipulator 8.

[0021] Among them, see Figure 1 , filter 2 is set to multiple, see Figure 2The screening mechanism 2 includes a screening frame 201, an upper linear actuator 202, an upper detection cylinder 203, an air 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, and an electric cylinder or a hydraulic cylinder can also be selected. 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 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. The upper detection cylinder 203 is equipped with an air pressure sensor 204, an air inlet pipe 205, and a liquid inlet pipe 206. The air inlet pipe 205 is equipped with an air inlet valve 207, and the liquid inlet pipe 206 is equipped with a liquid inlet valve 2 08, the weighing sensor 209 is fixedly mounted on the screening rack 201, the weighing cylinder 210 is mounted on the detection end of the weighing sensor 209, the weighing cylinder 210 is located directly below the upper detection cylinder 203, the upper and lower ends of the weighing cylinder 210 are open structures, the top of the weighing cylinder 210 is formed with a bayonet 213 for limiting the passage of eggs, the inner diameter of the bayonet 213 is 5 cm, the diameter of the egg is usually about 5.5 cm, the bayonet 213 can clamp 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 mounted on the frame 1, and 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. When the piston 211 is located inside the weighing cylinder 210, it is slidably sealed and connected with the weighing cylinder 210. Please refer to Figure 5 The upper linear actuator 202 can drive the upper detection cylinder 203 to move to a position 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 closed detection chamber 214 for accommodating eggs is formed. The detection chamber 214 includes a portion where the liquid inlet pipe 206 and the air inlet pipe 205 are connected to the upper detection cylinder 203 when the liquid inlet valve 208 and the air inlet valve 207 are closed. The position of the piston 211 in the weighing cylinder 210 is different. The volume of the detection chamber 214 is different. The position of the piston 211 in 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 uses an electric cylinder or a servo cylinder, which can accurately output a preset displacement. The extension length of the output end of the lower linear actuator 212 can be determined, so the volume of the detection chamber 214 can always be determined; the piston 211 is driven by the lower linear actuator 212 to move in the weighing cylinder 210, thereby changing the volume and air pressure of the detection chamber 214; In the above description, the air pressure in the detection chamber 214 is detected by the air pressure sensor 204; the volume of the egg can be calculated based on the changes in the internal volume and air pressure of the detection chamber 214 before and after the movement of the piston 211, according to the ideal gas state equation pV=nRT; the weighing cylinder 210 and the upper detection cylinder 203 are made of copper, which has good thermal conductivity, and therefore is considered to be an isothermal compression situation; the weighing sensor 209 has obtained the mass of the egg, so that 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, thereby distinguishing qualified eggs.

[0022] The specific gravity of eggs is closely related to the content and state of the internal components. Changes in specific gravity can reflect the loss of water inside the egg, the decomposition of protein and fat, etc. When the water inside the egg evaporates or the nutritional content changes, its specific gravity will change accordingly. For example, if the eggs are stored for too long, the water will be lost, the density of the egg liquid will decrease, and the specific gravity will also decrease. Therefore, these changes in internal quality can be effectively detected through specific gravity screening, while light screening mainly focuses on the external appearance of the egg, and it is difficult to detect subtle changes in internal components.

[0023] Experiments have found 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 through specific gravity screening, while light screening may not be able to detect this decline in internal quality when there is no obvious change in the appearance of the eggs.

[0024] The cleaning mechanism 3 includes a power pump 31, a liquid storage tank 32 and an infusion pipeline. The liquid storage tank 32 is provided with a disinfectant pool 321 and a clean water pool 322. The power pump 31 selectively delivers the disinfectant stored in the disinfectant pool 321 and the clean water stored in the clean water pool 322 to the liquid inlet pipe 206 through the infusion pipeline; the disinfectant water stored in the disinfectant pool 321 is a sodium hypochlorite solution with a concentration of 150 mg / L; the infusion pipeline includes a disinfectant suction pipe 33, a clean water suction pipe 34, a two-position three-way solenoid valve 35, a main infusion pipeline 36, a branch infusion pipeline 37, and a two-position three-way solenoid valve 35. The two input ends of the magnetic valve 35 are respectively connected to the disinfectant suction pipe 33 and the clean water suction pipe 34. The input end of the disinfectant suction pipe 33 is located in the disinfectant water pool, and the clean water suction 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 to the main infusion pipeline 36. The main infusion pipeline 36 is equipped with a branch infusion pipe 37 corresponding to the inlet pipe 206 one by one, and the output end of the branch infusion pipe 37 is connected to the inlet pipe 206; a flow sensor 38 is installed on the branch infusion pipe 37 or the inlet pipe 206.

[0025] In the above description, after completing the test of the eggs, refer to Figure 5, open the liquid inlet valve 208 corresponding to the qualified eggs, and the liquid inlet valve 208 of the unqualified eggs can also be opened at the same time, the two-position three-way electromagnetic valve 35 connects the disinfectant liquid suction pipe 33 and the main infusion pipe 36, under the action of the power pump 31, the disinfectant stored in the disinfectant pool 321 enters the disinfectant liquid suction pipe 33, the main infusion pipe, the branch infusion pipe 37, and the liquid inlet pipe 206 detection chamber 214 in sequence, and the flow sensor 38 detects the flow of the incoming liquid. When the flow reaches a preset value, the controller controls the corresponding liquid inlet valve 208 to close; the controller is electrically connected to each electrical component of the screening device of this embodiment, and a control program is preset in the controller to control the automatic screening operation; the liquid inlet valve 208 uses 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 an open state, which can balance the air pressure and facilitate the disinfectant to enter the detection chamber 214; after the eggs are immersed in the disinfectant for a preset time, please refer to Figure 6 , the lower linear actuator drives the piston 211 to descend to a position away from the weighing cylinder 210, and the disinfectant water in the detection chamber 214 is automatically discharged; then, the two-position three-way solenoid valve 35 connects the clean water suction pipe 34 and the main infusion pipe 36, and under the action of the power pump 31, the clean water stored in the clean water pool 322 enters the clean water suction pipe 34, the main infusion pipe, the branch infusion pipe 37, and the inlet pipe 206 into the detection chamber 214 in turn to clean the qualified eggs or all the eggs that have been tested.

[0026] The drying mechanism 4 includes a fan 41 and an air supply duct. The fan 41 is connected to the air inlet pipe 205 through the air supply duct. The air supply duct includes a main air supply pipe 42 and a plurality of 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 provided with branch air supply pipes 43 corresponding to the air inlet pipe 205. The output end of the branch air supply pipe 43 is connected to the air inlet pipe 205. After the eggs are washed, the liquid inlet valve 208 is closed, the air inlet valve 207 is opened, and the fan 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 contacts the eggs and blows the eggs dry to obtain dry and clean eggs.

[0027] In order to collect disinfectant water and clean water for cleaning eggs, the screening mechanism 2 is provided to include a lower water collecting annular groove 215 with an annular cavity. The lower water collecting annular groove 215 is fixedly mounted on the frame 1. The bottom of the weighing cylinder 210 is located in the lower water collecting annular groove 215. The output end of the lower linear actuator 212 passes through the inner side of the lower water collecting annular groove 215. A branch drain pipe is provided at the bottom of the lower water collecting annular groove 215. Each branch drain pipe is connected to the main drain pipe. The disinfectant water and clean water for cleaning eggs flow from the weighing cylinder 210 into the annular cavity of the lower water collecting annular groove 215. The piston 211 can cover the circular hole formed at the center of the lower water collecting annular groove 215 to prevent water from contacting the lower linear actuator 212. The waste water in the annular cavity of the lower water collecting annular groove 215 enters the main drain pipe through the branch drain pipe and is finally discharged from the main drain pipe.

[0028] In some implementations, in order to facilitate the detection of the temperature in the detection chamber 214, the screening mechanism 2 is further provided with a temperature sensor 216, which 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 in the detection chamber 214 will change to a certain extent. By detecting the temperature of the detection chamber 214, based on the ideal gas state equation pV=nRT, the volume of the egg can be accurately detected.

[0029] In some implementations, to achieve automatic loading and unloading, please refer to Figure 1 , a manipulator 8 is set to correspond to the screening mechanism 2 one by one, and the manipulator 8 is used to load and unload the corresponding screening mechanism 2. The manipulator 8 is used to transport the eggs to be screened on the feeding conveyor 5 to the weighing cylinder 210, and to transport the qualified eggs after the inspection to the qualified egg feeding machine 6, and to transport the unqualified eggs after the inspection to the unqualified egg feeding machine 7. The feeding conveyor 5, the qualified egg feeding machine 6, and the unqualified egg feeding machine 7 are all belt conveyors, and the feeding conveyor 5, the qualified egg feeding machine 6, and the unqualified egg feeding machine 7 are arranged in parallel and adjacent to each other. The manipulator 8 is a multi-axis robot of the prior art, which can realize multi-degree-of-freedom movement, and can accurately pick up eggs in conjunction with the visual inspection module.

[0030] See also Figure 1 The manipulator 8 includes an end effector, which includes a negative pressure box 81, a pre-detection vacuum cup 82, a post-detection vacuum 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 manipulator 8, and the negative pressure box 81 is connected to a negative pressure source, which may be a vacuum generator. The pre-detection vacuum cup 82 is connected to the negative pressure box 81 through the pre-detection negative pressure tube 84, and the post-detection vacuum cup 83 is connected to the negative pressure box 81 through the post-detection negative pressure tube 85. Please refer to Figure 3, negative pressure valves 86 are installed on the negative pressure pipe 84 before detection and the negative pressure pipe 85 after detection. The manipulator 8 uses the vacuum suction cup 82 before detection to transfer the uncleaned eggs on the feeding conveyor 5 to the weighing cylinder 210 or transfer the unqualified eggs that have been detected and uncleaned to the unqualified egg feeder 7. The vacuum suction cup 83 after detection is used by the manipulator 8 to transfer the eggs that have been detected and cleaned to the qualified egg feeder 6 or to transfer the unqualified eggs that have been detected and cleaned to the unqualified egg feeder 7. That is, the vacuum suction cup 82 before detection only contacts the uncleaned eggs, and the vacuum suction cup 83 after detection only contacts the cleaned eggs, which can avoid the contamination of the eggs when transferring the cleaned eggs due to only one vacuum suction cup, and can ensure the cleanliness of the eggs. By controlling the opening and closing of the corresponding negative pressure valve 86, the vacuum suction cup 82 before detection and the vacuum suction cup 83 after detection are switched to work.

[0031] In order to facilitate the weighing sensor 209 to detect the weight of the weighing cylinder 210, the weighing sensor 209 is set to use a ring-shaped weighing sensor 209, and the weighing cylinder 210 is inserted inside the weighing sensor 209. In order to facilitate the weighing sensor 209 to carry the weighing cylinder 210, a flange 217 is set on the top of the weighing cylinder 210, and the flange 217 is connected to the detection end of the weighing sensor 209; In order to facilitate the upper detection cylinder 203 to maintain sealing when in contact with the weighing cylinder 210 , a sealing ring is installed at the bottom end of the upper detection cylinder 203 , and the sealing ring is used to seal and contact with the flange 217 .

[0032] In order to avoid too much water stains remaining on the flange 217 and affecting the drying efficiency of the weighing cylinder 210, a guide cone 218 is provided on the inner side of the flange 217, and a plurality of guide ports 219 are provided on the guide cone 218. The guide ports 219 are distributed in a circle on the inner wall of the weighing cylinder 210. The outer diameter of the guide cone 218 is the same as the inner diameter of the sealing ring. When the upper detection cylinder 203 is in sealing contact with the weighing cylinder 210, the guide cone 218 is located on the inner side of the sealing ring. When washing eggs, the washing water enters the upper detection cylinder 203 and the weighing cylinder 210 and is likely to remain on the flange 217. The guide cone 218 is provided to allow the water to flow downward under the action of gravity, thereby avoiding too much water stains remaining on the flange 217, which increases the drying time of the eggs and the weighing cylinder 210. When the egg is inserted into the slot 213, the connection area between the upper detection cylinder 203 and the weighing cylinder 210 becomes smaller, affecting the circulation of water and air. The flow guide port 219 is provided to increase the connection area between the upper detection cylinder 203 and the weighing cylinder 210, increase the circulation of water and air, and thus improve the cleaning and drying efficiency. Example 2

[0033] This embodiment also provides a method for preparing high-performance liquid egg using the above-mentioned screening device for preparing high-performance liquid egg, comprising the following steps: Step 1, raw material screening: select eggs with no damage and clean surface, screen the eggs, place the eggs in the bayonet 213, obtain the egg mass M0 through the weighing sensor 209, drive the upper detection cylinder 203 down to the weighing cylinder 210 through the upper linear actuator 202, drive the piston 211 up to the weighing cylinder 210 through the lower linear actuator 212, and form a closed detection chamber 214 for accommodating 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 in the weighing cylinder 210 through the lower linear actuator 212 to change the volume and air pressure of the detection chamber 214. The piston 211 moves in the weighing cylinder 210. 10. The slow movement within the detection chamber 214 can try not to change 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 state equation pV=nRT, where p is pressure, V is gas volume, T is temperature, n is the amount of gas, and R is the molar gas constant, the volume V0 of the egg is calculated; according to the object density equation ρ=M / V, where M is the weight of the object and V is the volume of the object, the relative density ρ=M0 / V0 of the egg is calculated; when ρ>1.080, the egg is deemed qualified; the specific calculation principle can be referred to the patent with publication number CN208579750U, entitled Device for Measuring the Volume of Irregular Objects with Gas; Step 2, cleaning and disinfection: the power pump 31 delivers the disinfectant stored in the disinfectant pool 321 to the liquid inlet pipe 206 and the detection chamber 214 through the infusion pipeline to immerse the eggs, and the eggs are soaked 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 liquid inlet pipe 206 and the detection chamber 214 through the infusion pipeline to rinse the eggs and remove bacteria, viruses and residual disinfectant on the surface of the eggshell; specifically, the inlet valve 208 is opened, and the two-position three-way solenoid valve 35 connects the disinfectant suction pipe 33 and the main infusion pipeline 36. Under the action of the power pump 31, the disinfectant stored in the disinfectant pool 321 enters the main infusion pipeline 36 in sequence. The flow sensor 38 detects the flow of the liquid entering the disinfectant pumping pipe 33, the main infusion pipe, the branch infusion pipe 37, and the inlet pipe 206 detection chamber 214. When the flow reaches a preset value, the controller controls the corresponding inlet valve 208 to close. After the eggs are immersed in the disinfectant for a preset time, the lower linear actuator drives the piston 211 to descend to a 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 clean water pumping pipe 34 and the main infusion pipe 36. Under the action of the power pump 31, the clean water stored in the clean water pool 322 enters the clean water pumping pipe 34, the main infusion pipe, the branch infusion pipe 37, and the inlet pipe 206 detection chamber 214 in turn to clean the eggs. Step 3: After the eggs are cleaned, the liquid inlet valve 208 is closed, the air inlet valve 207 is opened, and the fan 41 delivers the 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 contacts the eggs and blows the eggs dry to obtain dry and clean eggs. Step 4, breaking the eggs and separating them: breaking the eggs in step 2, filtering the egg liquid, separating the eggshell fragments, ligaments and other impurities in the egg liquid, and obtaining a pure egg liquid base liquid; Step 5, adding improvers and auxiliary materials: 0.3% of phospholipids, 0.8% of salt and 8% of sucrose based on the total weight of the egg liquid base liquid are mixed and stirred evenly; Step 6, homogenization: homogenize the mixed egg liquid obtained in step 4 by ultrasonic wave, and perform vacuum degassing at the same time; high-density ultrasonic power is 220W, ultrasonic time is 10 minutes, and ultrasonic wave is performed for 3 seconds and rest for 3 seconds, so that the particles such as fat globules in the egg liquid are further refined and the emulsification stability of the egg liquid is improved; Step 7, sterilization: the mixed egg liquid obtained in step 5 is sterilized by pasteurization in a water bath at 64-66°C for 3.5-4 minutes; Step 8, testing and storage: the qualified mixed egg liquid product obtained in step 6 is stored in a refrigerated device at 0-4°C. Example 3

[0034] This embodiment is substantially the same as Implementation 2, except that in step 4, improvers and auxiliary materials are added: 0.2% of the total weight of the egg liquid base liquid, 0.7% of salt, and 7% of sucrose are mixed with the egg liquid base liquid and stirred evenly.

[0035] By comparing the high-performance egg liquid prepared in Example 2 and Example 3 with ordinary egg liquid, the results show that the high-performance egg liquid prepared by the present invention is significantly superior to ordinary egg liquid in emulsification, foaming and gelling properties, and can better meet the requirements for high performance of egg liquid in the food industry.

[0036] It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these modifications and improvements all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A high-performance screening device for preparing egg liquid, 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) comprises a screening frame (201), an upper linear actuator (202), an upper detection cylinder (203), an air 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 fixedly mounted on the top of the frame (1), and the upper detection cylinder (20 3) The top is a closed structure, 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), the upper detection cylinder (203) is installed with a pressure sensor (204), an air intake pipe (205), and a liquid intake pipe (206), the air intake pipe (205) is installed with an air intake valve (207), the liquid intake pipe (206) is installed with a liquid intake valve (208), the weighing sensor (209) is fixedly installed on the screening frame (201), and the weighing cylinder (210) is installed on the weighing sensor ( The weighing cylinder (210) is located on the detection end of the upper detection cylinder (209), the weighing cylinder (210) is located directly below the upper detection cylinder (203), the upper and lower ends of the weighing cylinder (210) are both open structures, and a bayonet (213) is formed at the top of the weighing cylinder (210) for limiting the passage of eggs. The lower linear actuator (212) is fixedly mounted on the frame (1), and 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 (21 0), the upper linear actuator (202) is capable of driving the upper detection cylinder (203) to move to a position 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) capable of accommodating eggs is formed; the piston (211) is driven by the lower linear actuator (212) to move in the weighing cylinder (210), thereby changing the volume and air pressure of the detection chamber (214); The cleaning mechanism (3) comprises a power pump (31), a liquid storage tank (32) and a liquid infusion pipeline. A disinfectant pool (321) and a cleaning water pool (322) are provided in the liquid storage tank (32). The power pump (31) selectively transports the disinfectant stored in the disinfectant pool (321) and the cleaning water stored in the cleaning water pool (322) to the liquid inlet pipe (206) through the liquid infusion pipeline. The drying mechanism (4) comprises a fan (41) and an air supply duct, and the fan (41) is connected to the air inlet pipe (205) through the air supply duct.

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

3. The high-performance egg liquid preparation screening device according to claim 1, characterized in that: The screening mechanism (2) further comprises a temperature sensor (216), wherein the temperature sensor (216) is fixedly mounted on the upper detection cylinder (203), and the temperature sensor (216) 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 feeding machine (6), a unqualified egg feeding machine (7), and a manipulator (8) corresponding to the screening mechanism (2). The manipulator (8) is used to transport the eggs to be screened conveyed on the feeding conveyor (5) to the weighing cylinder (210), transport qualified eggs after testing to the qualified egg feeding machine (6), and transport unqualified eggs after testing to the unqualified egg feeding machine (7).

5. The high-performance egg liquid preparation screening device according to claim 4, characterized in that: The manipulator (8) comprises 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 manipulator (8), the negative pressure box (81) is connected to a negative pressure source, the pre-detection vacuum suction cup (82) is connected to the negative pressure box (81) via the pre-detection negative pressure tube (84), the post-detection vacuum suction cup (83) is connected to the negative pressure box (81) via the post-detection negative pressure tube (85), and negative pressure valves (86) are installed on 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 provided with at least two, the infusion pipeline comprises a disinfectant liquid suction pipe (33), a clean water suction 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 liquid suction pipe (33) and the clean water suction pipe (34), the input end of the disinfectant liquid suction pipe (33) is located in the disinfectant water pool, the clean water suction pipe (34) is located in the clean water pool (322), and 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 with the main liquid infusion pipeline (36), the main liquid infusion pipeline (36) is provided with branch liquid infusion pipelines (37) corresponding one-to-one to the liquid inlet pipeline (206), and the output end of the branch liquid infusion pipeline (37) is connected to the liquid inlet pipeline (206); the air supply pipeline comprises a main air supply pipeline (42) and a plurality of branch air supply pipelines (43), the output end of the fan (41) is connected to the main air supply pipeline (42), the main air supply pipeline (42) is provided with branch air supply pipelines (43) corresponding one-to-one to the air inlet pipeline (205), and the output end of the branch air supply pipeline (43) is connected to the air inlet pipeline (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 liquid inlet tube (206).

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

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

10. A method for preparing high-performance liquid egg using the screening device for preparing high-performance liquid egg according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1, raw material screening: select eggs that are not damaged and have clean surfaces, screen the eggs, place the eggs in the bayonet (213), obtain the egg mass through the weighing sensor (209), drive the upper detection cylinder (203) down to the weighing cylinder (210) through the upper linear actuator (202), drive the piston (211) up to the weighing cylinder (210) through the lower linear actuator (212), and form a closed detection chamber (214) for accommodating the eggs. 14) The initial volume and initial air pressure are V1 and p1 respectively. The piston (211) is driven by the lower linear actuator (212) to move in the weighing cylinder (210), thereby changing the volume and air pressure of the detection chamber (214). At this time, the volume and air pressure in the detection chamber (214) are V2 and p2 respectively. The volume of the egg is calculated according to the ideal gas state equation pV=nRT, and the relative density of the egg is calculated according to the density equation ρ=M / V. When ρ>1.080, the egg is deemed qualified. Step 2, cleaning and disinfection: the power pump (31) transports the disinfectant stored in the disinfectant pool (321) to the liquid inlet pipe (206) and the detection chamber (214) corresponding to the qualified eggs through the liquid infusion pipeline, immersing the eggs, and the eggs are soaked 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) transports the clean water stored in the clean water pool (322) to the liquid inlet pipe (206) and the detection chamber (214) through the liquid infusion pipeline, and rinses the eggs to remove bacteria, viruses and residual disinfectant on the eggshell surface; Step 3, drying: After the eggs are washed, the fan (41) conveys air to the upper detection cylinder (203) and the weighing cylinder (210) through the air supply duct, and the air contacts the eggs to dry the eggs, thereby obtaining dry and clean eggs; Step 4, breaking the eggs and separating them: breaking the eggs in step 2, filtering the egg liquid, separating the eggshell fragments, ligaments and other impurities in the egg liquid, and obtaining a pure egg liquid base liquid; Step 5: Add improvers and auxiliary materials; Step 6: Homogenize; Step 7: Sterilization.

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