Amino acid recycling system

Abstract

The present invention relates to the technical field of amino acid recovery, and in particular to an amino acid recovery and utilization system, comprising a cylinder, wherein wastewater is contained in the cylinder, a feed port is arranged inside the cylinder, a tail gas treatment unit is installed on the top of the cylinder, a controller is installed on the top of the cylinder, a temperature sensor, a liquid level sensor and a pressure sensor are installed on the top of the cylinder, a stirring and scraping unit is installed in the cylinder, and a collecting unit and a heating unit are installed on the bottom of the cylinder. The present invention realizes that the scraper scrapes off crystals attached to the inner wall of the cylinder and reminds workers that crystallization is completed by changing the distance between the scraper and the inner wall of the cylinder and installing the temperature sensor and the liquid level sensor on the top of the cylinder.

Description

Technical Field

[0001] The present invention relates to the technical field of amino acid recovery, and in particular to an amino acid recovery and utilization system. Background Art

[0002] Amino acids are the basic substances that constitute proteins. Their molecular structures contain two functional groups: alkaline amino groups and acidic carboxyl groups. In terms of classification, we classify them into α-, β-, γ-…ω-amino acids according to the different connection positions of amino groups on the carbon chain. There are about 20 common types. After protein hydrolysis, the amino acids obtained are all α-amino acids. As the basic components of protein, amino acids are directly involved in the metabolism of the human body. In addition to synthesizing tissue proteins, amino acids also become acids, hormones, antibodies, creatine and other ammonia-containing substances, and are transformed into carbohydrates and fats, as well as oxidized into carbon dioxide, water and urea to generate energy. Amino acids are colorless crystals with a melting point of more than 200°C, which is much higher than the melting point of general organic compounds. α-Amino acids have four different tastes: sour, sweet, bitter and fresh. Monosodium glutamate and glycine are the most used umami seasonings. Amino acids are generally soluble in water, acid solutions and alkaline solutions, and insoluble or slightly soluble in organic solvents such as ethanol or ether. Most amino acids have poor solubility at high temperatures, so amino acids in water can be extracted by evaporation and crystallization.

[0003] In the prior art, amino acid recycling usually uses a crystallization kettle for evaporation crystallization. The crystallization kettle includes a feeding unit, a stirring unit, a heating unit, a power unit and a control unit. When working, the feeding unit starts feeding. After the feeding is completed, the control unit controls the power unit to rotate, and the power unit drives the stirring unit to start stirring. At the same time, the heating unit starts heating. After the workers determine that the crystallization is completed, they take out the crystals and manually clean the crystallization kettle.

[0004] During use, the inventors found that the amino acid recovery crystallization kettle still had the following deficiencies:

[0005] 1. Although the existing crystallization kettle is equipped with stirring blades, it is difficult to remove the crystals on the inner wall of the kettle after the crystallization is completed. Generally, it is cleaned manually, which is time-consuming and laborious.

[0006] 2. The existing crystallization kettle needs to be judged manually to complete the crystallization, and the crystallization time is difficult to control;

[0007] 3. During the amino acid crystallization recovery process, the tail gas generated by the crystallization is generally discharged directly into the atmosphere. Although the tail gas can be discharged directly into the atmosphere, there are still some acidic gases and ammonia in the tail gas, which will have a profound impact on the surrounding environment.

[0008] In view of this, in order to improve the above technical problems, the present invention provides an amino acid recycling system, which can scrape off the crystals attached to the inner wall of the barrel and remind the completion of crystallization. The specific beneficial effects are as follows:

[0009] 1 The present invention designs a scraper that can be extended and retracted relative to the central rod, and automatically controls the extension and retraction of the scraper according to the change of the temperature in the crystallization kettle. When the temperature in the crystallization kettle rises, the scraper retracts to achieve the stirring function. When the crystallization kettle is completed and the temperature is lowered, the scraper extends and is close to the crystal, and then the scraper rotates to scrape the crystal. The present invention realizes the stirring during the crystallization of the amino acid and the cleaning function after the amino acid crystallization through the mutual cooperation between the above technical features, making the crystallization and recovery of the amino acid more convenient.

[0010] 2. The present invention installs a temperature sensor, a liquid level sensor and a pressure sensor inside the cylinder to monitor the temperature, liquid residue and pressure inside the cylinder, which is convenient for workers to control the crystallization inside the cylinder in real time, and the structural design of the telescopic scraper makes the recovery of amino acid crystals more convenient and quick.

[0011] 3. The tail gas treatment unit designed in the present invention can achieve the treatment of tail gas generated by amino acid crystallization, thereby avoiding the pollution of the environment by directly discharging the tail gas into the atmosphere. Summary of the invention

[0012] The technical problem to be solved by the present invention is to provide an amino acid recycling system, which can be used for both crystallization stirring of amino acids and cleaning of amino acids after crystallization.

[0013] The present invention provides the following technical solution: an amino acid recycling system, comprising a cylinder, a power unit and a control unit, wherein the power unit is fixedly connected to the top surface of the cylinder by bolts, the control unit is fixedly connected to the top cover of the cylinder, a stirring and scraping unit is installed on the cylinder, the stirring and scraping unit is coaxially arranged with the cylinder and can rotate around its own axis, the stirring and scraping unit is used to stir the liquid in the cylinder, and is also used to scrape off crystals attached to the inner wall of the cylinder; wherein:

[0014] The stirring and scraping unit includes a center rod, an extension rod, a piston, a sealing cover, a piston rod and a scraper. Four extension rods are arranged on the top and bottom of the center rod. The extension rod is hinged to the center rod, and a torsion spring is installed at the hinge point. The torsion spring is used to keep the extension rod in a horizontal state. The extension rod in the horizontal state is used to keep the scraper relatively stable during the high-speed rotation of the scraper. A blind hole is arranged at the end of the extension rod, a piston is installed in the blind hole, a sealing cover is installed at the opening of the blind hole, a piston rod is installed on the piston, the piston rod passes through the sealing cover and extends outward to be fixedly connected with the scraper; the blind hole between the sealing cover and the piston is filled with a temperature-sensitive material that expands with heat and contracts with cold; a balancing hole is opened at the bottom of the blind hole; the scraper contacts the inner wall of the cylinder at the maximum extended position of the piston rod.

[0015] The scraper of the present invention can have the function of rotating and stirring while also having the function of scraping the inner wall of the cylinder. When the feeding unit finishes feeding, the heating unit starts working. As the temperature rises, the temperature-sensitive material between the sealing cover and the piston rod expands due to heat, and the expanded temperature-sensitive material pushes the piston to move inward. While the piston drives the piston rod to move inward, the piston rod drives the scraper to contract. At this time, the scraper stirs the liquid in the cylinder to accelerate the crystallization speed. When the crystallization is completed, the heating unit stops working, the temperature in the cylinder gradually decreases, and the gas between the sealing cover and the piston rod begins to contract. At this time, the piston pushes the piston rod to move outward, and the piston rod pushes the scraper toward the inner wall of the cylinder. When the piston rod is extended to the maximum position, it contacts the inner wall of the cylinder, and the scraper starts to scrape the crystals attached to the inner wall of the crystallization barrel.

[0016] Preferably, the scraper is a comb-tooth structure, which can better scrape off the crystals inside the cylinder. The scraper is made of spring steel, which has high tensile strength, elastic limit and high fatigue strength.

[0017] Preferably, a detection unit is installed in the cylinder, and the detection unit is used to detect the temperature, liquid level and pressure of the liquid in the cylinder, and transmit the detection results to the control unit;

[0018] The detection unit includes a temperature sensor, a liquid level sensor and a pressure sensor, which are all installed on the top of the cylinder. The temperature sensor is used to detect the temperature of the liquid. The control unit can control the heating unit to stabilize the temperature in the cylinder at 80°C through the temperature information transmitted by the temperature sensor. The liquid level sensor is used to detect the height of the liquid in the cylinder. The control unit can determine whether the crystallization in the cylinder is completed through the liquid level information transmitted by the liquid level sensor, and then control the feeding unit to feed. The pressure sensor is used to detect the pressure in the cylinder. The control unit controls the size of the solenoid valve port through the pressure information transmitted by the pressure sensor. The solenoid valve can ensure that the evaporation crystallization in high-altitude areas is carried out normally. The boiling point of water in high-altitude areas is lower than 100°C, and the pressure in the cylinder is lower than the normal atmospheric pressure. The solenoid valve can ensure that the pressure in the cylinder is standard atmospheric pressure.

[0019] Preferably, the bottom of the cylinder is arranged to be open, a clamping disk is arranged at the bottom edge of the cylinder, a collecting bucket is installed below the cylinder, and the collecting bucket is fixedly and sealedly connected to the cylinder by clamping the clamping disk through a clamping piece, so as to facilitate the removal of the crystals after crystallization is completed.

[0020] Preferably, a heating plate is provided at the bottom of the collecting barrel, and the heating plate is used to heat the liquid in the cylinder body. The heating plate is separated from the cylinder body to facilitate cleaning of crystals on the surface of the heating plate; the control unit is used to control the heating temperature and heating time of the heating plate according to the results detected by the temperature sensor and the liquid level sensor. When the liquid level sensor monitors that the liquid level reaches a set high water level value, the control unit controls the heating unit to start heating. When the liquid level sensor monitors that the liquid level reaches a set low water level value, the control unit controls the heating unit to stop heating. The control unit controls the heating plate through the temperature sensor to keep the temperature in the cylinder body at a constant temperature of 80°C.

[0021] Preferably, an exhaust hole is provided on the top of the cylinder, and a solenoid valve is installed on the exhaust hole. The solenoid valve is connected to an exhaust gas treatment unit, and the exhaust gas treatment unit is used to treat the exhaust gas evaporated in the cylinder; the control unit is used to control the opening size of the solenoid valve according to the result detected by the pressure sensor. The solenoid valve can ensure that evaporation and crystallization in high-altitude areas proceed normally. The boiling point of water in high-altitude areas is lower than 100°C, and the pressure in the cylinder is lower than normal atmospheric pressure. The solenoid valve can ensure that the pressure in the cylinder is standard atmospheric pressure.

[0022] The tail gas treatment unit comprises a No. 1 treatment box, a No. 2 treatment box and a No. 3 treatment box which are connected in sequence, and the No. 1 treatment box is connected to the solenoid valve; the tail gas often contains acidic gas, ammonia and other harmful gases, which will seriously pollute the environment when discharged into the air, and the tail gas treatment unit can well solve the tail gas emission problem, the No. 1 treatment box is used to treat the acidic gas in the cylinder, and a 40% NaOH solution is introduced into the No. 1 treatment box, and the NaOH solution can react with the hydrochloric acid gas in the tail gas, and the specific reaction chemical formula is: HCl+NaOH=NaCl+H2O, the No. 2 treatment box 83 is used to treat the ammonia in the cylinder, and a CH3COOH solution is introduced into the No. 2 treatment box, and the solution can ionize H + NH3 and H + The reaction produces NH4 + , NaHClO reacts with organic matter to generate NaHCl and small molecular acid. The specific chemical formula is: CH3COOH+Na+=CH3COONa+H + ,NH3+H + =NH4 + ,NaHClo+organic matter→NaCl+H2O+small molecule acid, the No. 3 treatment box is used to treat the small molecule acid produced after the reaction in the No. 2 treatment box, and the No. 3 treatment box continues to pass NaOH solution, NaOH reacts with small molecule acid to generate sodium salt and water, and the specific chemical reaction equation is: NaOH+small molecule acid→sodium salt+H2O. Through the tail gas treatment unit, the harmful gases generated during the evaporation and crystallization process are reacted into salt and water vapor, which is conducive to discharge.

[0023] Preferably, the temperature-sensitive substance is ethanol. Ethanol has better thermal expansion and contraction effects than other common substances. According to the ideal gas equation pV=nRT, it can be seen that when the volume, temperature, and molar gas constant are consistent, the pressure p is positively correlated with the amount of substance n. The pressure obtained by using ethanol is greater. At the same time, the boiling point of ethanol is 78°C, which just meets the condition of vaporizing into gas at 80°C.

[0024] Preferably, the temperature sensor is an infrared temperature sensor, which will not wear out and will not have physical friction without contact, and thus has a longer service life.

[0025] Preferably, the liquid level sensor is a radar liquid level sensor, which is not affected by factors such as temperature and humidity, has high measurement accuracy, is easy to install, and is easy to maintain.

[0026] Preferably, the pressure sensor is a differential pressure sensor, which has a firm structure, stable and reliable performance, a long service life, and a low cost.

[0027] The beneficial effects of the present invention are as follows:

[0028] 1. The present invention designs a scraper that can be extended and retracted relative to the center rod, and automatically controls the extension and retraction of the scraper by the change of the temperature in the crystallization kettle. When the temperature in the crystallization kettle rises, the scraper retracts to achieve the stirring function. When the crystallization kettle is cooled after the crystallization is completed, the scraper extends and is close to the crystal, and then the scraper rotates to scrape the crystal. The present invention realizes the stirring during the crystallization of the amino acid and the cleaning function after the amino acid crystallization through the mutual cooperation between the above technical features, making the crystallization and recovery of the amino acid more convenient.

[0029] 2. The present invention installs a temperature sensor, a liquid level sensor and a pressure sensor inside the cylinder to monitor the temperature, liquid residue and pressure inside the cylinder, which is convenient for workers to control the crystallization inside the cylinder in real time, and the structural design of the telescopic scraper makes the recovery of amino acid crystals more convenient and quick.

[0030] 3. The tail gas treatment unit designed in the present invention can achieve the treatment of tail gas generated by amino acid crystallization, thereby avoiding the pollution of the environment by directly discharging the tail gas into the atmosphere. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 It is an overall schematic diagram of the present invention;

[0033] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0034] Figure 3 is a main cross-sectional view of the present invention;

[0035] Figure 4 is an enlarged view of the piston device of the present invention;

[0036] Figure 5 It is a schematic diagram of the cross-sectional structure of the heating unit of the present invention;

[0037] Figure 6 It is an enlarged view of the detection unit of the present invention;

[0038] Figure 7 It is a schematic diagram of the scraper structure of the present invention.

[0039] In the figure: cylinder 1, clamping plate 11, clamping piece 12, power unit 2, control unit 3, stirring and scraping unit 4, center rod 41, extension rod 42, piston 43, sealing cover 44, piston rod 45, scraper 46, detection unit 5, temperature sensor 51, liquid level sensor 52, pressure sensor 53, collecting barrel 6, heating unit 7, heating plate 71, exhaust gas treatment unit 8, solenoid valve 81, treatment box No. 1 82, treatment box No. 2 83, treatment box No. 3 84. DETAILED DESCRIPTION

[0040] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0041] like Figures 1 to 7 As shown, an amino acid recycling system of the present invention comprises a cylinder 1, a power unit 2 and a control unit 3, wherein the power unit 2 is fixedly connected to the top surface of the cylinder 1 by bolts, the control unit 3 is fixedly connected to the top cover of the cylinder 1, and a stirring and scraping unit 4 is installed on the cylinder 1, the stirring and scraping unit 4 is coaxially arranged with the cylinder 1 and can rotate around its own axis, and the stirring and scraping unit 4 is used to stir the liquid in the cylinder 1, and is also used to scrape off the crystals attached to the inner wall of the cylinder 1; wherein:

[0042] The stirring and scraping unit 4 includes a central rod 41, an extension rod 42, a piston 43, a sealing cover 44, a piston rod 45 and a scraper 46. Four extension rods 42 are arranged at the top and bottom of the central rod 41. The extension rods 42 are hinged to the central rod 41, and a torsion spring is installed at the hinge point. The torsion spring is used to keep the extension rod 42 in a relatively horizontal state. The torsion spring can make the scraper 46 shake in a small range under the cooperation of the rough crystal structure when scraping the crystal, thereby improving the cleaning efficiency of the crystal. The end of the extending rod 42 is provided with a blind hole, a piston 43 is installed in the blind hole, a sealing cover 44 is installed at the opening of the blind hole, a piston rod 45 is installed on the piston 43, the piston rod 45 passes through the sealing cover 44 and extends outward to be fixedly connected with a scraper 46; the blind hole between the sealing cover 44 and the piston 43 is filled with a temperature-sensitive material that expands with heat and contracts with cold; a balancing hole is opened at the bottom of the blind hole; the scraper 46 contacts the inner wall of the cylinder 1 when the piston rod 45 is at the maximum extended position.

[0043] When the feeding unit finishes feeding, the heating unit 7 starts working. As the temperature rises, the temperature-sensitive material between the sealing cover 44 and the piston rod 45 expands due to the heat. The expanded temperature-sensitive material pushes the piston 43 to move inward. While the piston 43 drives the piston rod 45 to move inward, the piston rod 45 drives the scraper 46 to contract. At the same time, the power unit drives the scraper 46 to stir the liquid in the cylinder 1 to accelerate the crystallization speed. When the crystallization is completed, the heating unit 7 stops working, the temperature in the cylinder 1 gradually decreases, and the temperature-sensitive material between the sealing cover 44 and the piston rod 45 begins to contract. At this time, the piston 43 pushes the piston rod 45 to move outward, and the piston rod 45 pushes the scraper 46 toward the inner wall of the cylinder 1. The piston rod 45 extends to the maximum position, and the scraper 46 contacts the crystals on the inner wall of the cylinder 1. At this time, the scraper 46 begins to scrape off the crystals attached to the inner wall of the cylinder 1.

[0044] like Figure 7 As shown, as an embodiment of the present invention, the scraper 46 is a comb-tooth structure. The use of the comb-tooth structure can better scrape off the crystals inside the cylinder 1. The scraper 46 is made of spring steel. The spring steel has a certain elasticity and can scrape off the crystals on the inner wall of the cylinder 1 layer by layer, reducing the difficulty of scraping the crystals. The scraper 46 made of spring steel cooperates with the torsion spring at the hinge point of the extension rod, so that the scraper 46 can move up and down while rotating around the center rod, thereby improving the cleaning effect. The scraped grains are small, which can save the subsequent crystal crushing step.

[0045] like Figure 6 As shown, as an embodiment of the present invention, a detection unit 5 is installed in the cylinder 1, and the detection unit 5 is used to detect the temperature, liquid level and pressure of the liquid in the cylinder 1, and transmit the detection result to the control unit 3;

[0046] The detection unit 5 includes a temperature sensor 51, a liquid level sensor 52 and a pressure sensor 52. The temperature sensor 51, the liquid level sensor 52 and the pressure sensor 52 are all installed on the top of the cylinder 1. The temperature sensor 51 is used to detect the temperature of the liquid. The control unit 3 can control the heating unit 7 to stabilize the temperature in the cylinder 1 at a constant temperature of 80°C through the temperature information transmitted by the temperature sensor 51. The liquid level sensor 52 is used to detect the height of the liquid in the cylinder 1. The control unit 3 can determine whether the crystallization in the cylinder 1 is completed through the liquid level information transmitted by the liquid level sensor 52, and then control the feeding of the feeding unit; the pressure sensor 52 is used to detect the pressure in the cylinder 1.

[0047] like Figure 1As shown, as an embodiment of the present invention, the bottom of the cylinder 1 is arranged to be open, a clamping disc 11 is arranged at the bottom edge of the cylinder 1, a collecting bucket 6 is installed below the cylinder 1, and the collecting bucket 6 is clamped on the clamping disc 11 through a clamping piece 12 and is fixedly and sealedly connected to the cylinder 1, so as to facilitate the removal of the crystals after the crystallization is completed.

[0048] like Figure 3 As shown, as an embodiment of the present invention, a heating plate 71 is provided at the bottom of the collecting barrel 6, and the heating plate 71 is used to heat the liquid in the cylinder 1. The heating plate 71 is separated from the cylinder 1 to facilitate cleaning of the heating plate 71; the control unit 3 is used to control the heating temperature and heating time of the heating plate 71 according to the results detected by the temperature sensor 51 and the liquid level sensor 52. When the liquid level sensor 52 monitors that the liquid level reaches the set high water level value, the control unit 3 controls the heating plate 71 to start heating. When the liquid level sensor 52 monitors that the liquid level reaches the set low water level value, the control unit 3 controls the heating plate 71 to stop heating. The control unit 3 controls the heating plate 71 through the temperature sensor 51 to keep the temperature in the cylinder at a constant temperature of 80°C.

[0049] like Figure 1 As shown, as an embodiment of the present invention, an exhaust hole is provided on the top of the cylinder 1, and a solenoid valve 81 is installed on the exhaust hole. The solenoid valve 81 is connected to the tail gas treatment unit 8, and the tail gas treatment unit 8 is used to treat the tail gas evaporated in the cylinder 1; the control unit 3 is used to control the opening size of the solenoid valve 81 according to the result detected by the pressure sensor 52. The solenoid valve 81 can ensure that the evaporation crystallization in high-altitude areas is carried out normally. The boiling point of water in high-altitude areas is lower than 100°C, and the pressure in the cylinder 1 is lower than the normal atmospheric pressure. The solenoid valve 81 can ensure that the pressure in the cylinder 1 is standard atmospheric pressure to ensure the pressure requirement of amino acid crystallization;

[0050] The tail gas treatment unit 8 includes a No. 1 treatment box 82, a No. 2 treatment box 83 and a No. 3 treatment box 84 which are connected in sequence. The No. 1 treatment box 82 is connected to the solenoid valve 81. The tail gas often contains acidic gas, ammonia and other harmful gases. These gases discharged into the air will seriously pollute the environment. The tail gas treatment unit 8 can solve the tail gas emission problem well. The No. 1 treatment box 82 is used to treat the acidic gas in the cylinder 1. A 40% NaOH solution is passed into the No. 1 treatment box 82. The NaOH solution can react with the hydrochloric acid gas in the tail gas. The specific reaction chemical formula is: HCl+NaOH=NaCl+H2O. The No. 2 treatment box 83 is used to treat the ammonia in the cylinder 1. A CH3COOH solution is passed into the No. 2 treatment box 83. The solution can ionize H + NH3 and H + The reaction produces NH4+ , NaHClO reacts with organic matter to generate NaHCl and small molecular acid. The specific chemical formula is: CH3COOH+Na+=CH3COONa+H + ,NH3+H + =NH4 + ,NaHClo+organic matter→NaCl+H2O+small molecule acid, the No. 3 treatment box 84 is used to treat the small molecule acid produced after the reaction of the No. 2 treatment box 83, and the No. 3 treatment box 84 continues to pass NaOH solution, and NaOH reacts with the small molecule acid to generate sodium salt and water. The specific chemical reaction equation is: NaOH+small molecule acid→sodium salt+H2O. Through the tail gas treatment unit 8, the harmful gases generated during the evaporation and crystallization process are reacted into salt and water vapor, which is conducive to discharge.

[0051] like Figure 4 As shown, as an embodiment of the present invention, the temperature-sensitive substance is ethanol. The thermal expansion and contraction effect of ethanol is better than that of other common substances. According to the ideal gas equation pV=nRT, it can be known that when the volume, temperature, and molar gas constant are consistent, the pressure p is positively correlated with the amount of substance n. The pressure obtained by using ethanol is greater. At the same time, the boiling point of ethanol is 78°C, which just meets the condition of vaporizing into gas at 80°C.

[0052] like Figure 2 As shown, as an embodiment of the present invention, the temperature sensor 51 adopts an infrared temperature sensor, which is a non-contact sensor and can prevent amino acids from crystallizing on the sensor, thereby ensuring the accuracy of temperature detection.

[0053] like Figure 2 As shown, as an embodiment of the present invention, the liquid level sensor 52 adopts a radar liquid level sensor. The radar liquid level sensor is not affected by factors such as temperature and humidity, has high measurement accuracy, is easy to install, and is easy to maintain.

[0054] like Figure 2 As shown, as an embodiment of the present invention, the pressure sensor 52 adopts a differential pressure sensor, which has a firm structure, stable and reliable performance, long service life, and low cost.

[0055] During operation, the staff turns on the power supply, the feed port starts to feed, and when the liquid level sensor 52 senses that the liquid level has reached the preset high water level line, it transmits a signal to the control unit 3, and the control unit 3 controls the valve to close, the feed port stops feeding, and the power unit 2 starts to drive the stirring and scraping unit 4 to rotate. At the same time, the heating plate 71 starts to heat, and the heating plate 71 heats the water temperature to 80°C and keeps it constant. The temperature-sensitive material between the sealing cover 44 and the piston rod 45 expands due to heat, and the expanded temperature-sensitive material pushes the piston 43 to move inward. While the piston 43 drives the piston rod 45 to move inward, the piston rod 45 drives the scraper 46 to contract. At this time, the scraper 46 stirs the liquid in the cylinder 1, and in the steam During the crystallization process, the exhaust gas generated reaches the exhaust gas treatment unit 8 through the solenoid valve 81 in the exhaust hole, and the exhaust gas treatment unit 8 starts exhaust gas treatment. When the liquid level sensor 52 senses that the water level has reached the preset low water level, it transmits a signal to the control unit 3. The control unit 3 controls the heating plate 71 to stop heating, and the temperature in the cylinder 1 gradually decreases. The temperature-sensitive material between the sealing cover 44 and the piston rod 45 begins to shrink. At this time, the piston 43 pushes the piston rod 45 to move outward, and the piston rod 45 pushes the scraper 46 toward the inner wall of the cylinder 1. The piston rod 45 extends to the maximum position, and the scraper 46 contacts the crystals on the inner wall of the cylinder 1. At this time, the scraper 46 begins to scrape off the crystals attached to the inner wall of the crystallization barrel.

[0056] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An amino acid recycling system, comprising a cylinder (1), a power unit (2) and a control unit (3), wherein the power unit (2) is fixedly connected to the top surface of the cylinder (1) by bolts, and the control unit (3) is fixedly connected to the top cover of the cylinder (1), characterized in that: The cylinder (1) is provided with a stirring and scraping unit (4), which is coaxially arranged with the cylinder (1) and can rotate around its own axis. The stirring and scraping unit (4) is used to stir the liquid in the cylinder (1) and also to scrape off crystals attached to the inner wall of the cylinder (1); wherein: the stirring and scraping unit (4) comprises a central rod (41), an extension rod (42), a piston (43), a sealing cover (44), a piston rod (45) and a scraper (46); four extension rods (42) are arranged at the top and bottom of the central rod (41); the extension rods (42) are hinged to the central rod (41), and a torsion spring is installed at the hinge point, and the torsion spring is used to keep the extension rods (42) in a horizontal position. state, a blind hole is provided at the end of the extension rod (42), a piston (43) is installed in the blind hole, a sealing cover (44) is installed at the opening of the blind hole, a piston rod (45) is installed on the piston (43), the piston rod (45) passes through the sealing cover (44) and extends outward to be fixedly connected with the scraper (46); the blind hole between the sealing cover (44) and the piston (43) is filled with a temperature-sensitive material that expands with heat and contracts with cold; a balancing hole is provided at the bottom of the blind hole; the scraper (46) is in contact with the inside of the cylinder (1) when the piston rod (45) is at the maximum extended position; the scraper (46) is a comb-tooth structure, and the scraper (46) is made of spring steel; the temperature-sensitive material is ethanol.

2. An amino acid recycling system according to claim 1, characterized in that: A detection unit (5) is installed in the cylinder (1), and the detection unit (5) is used to detect the temperature and liquid level of the liquid in the cylinder (1) and the pressure in the cylinder (1), and transmit the detection results to the control unit (3); the detection unit (5) comprises a temperature sensor (51), a liquid level sensor (52) and a pressure sensor (53); the temperature sensor (51), the liquid level sensor (52) and the pressure sensor (53) are all installed on the top of the cylinder (1); the temperature sensor (51) is used to detect the temperature of the liquid; the liquid level sensor (52) is used to detect the height of the liquid in the cylinder (1), and the pressure sensor (53) is used to detect the pressure in the cylinder (1).

3. An amino acid recycling system according to claim 2, characterized in that: The bottom of the cylinder (1) is arranged to be open, a clamping disc (11) is arranged at the bottom edge of the cylinder (1), a collecting bucket (6) is installed below the cylinder (1), and the collecting bucket (6) is clamped on the clamping disc (11) through a clamping piece (12) and is fixedly and sealedly connected to the cylinder (1).

4. An amino acid recycling system according to claim 3, characterized in that: A heating plate (71) is provided at the bottom of the collecting barrel (6), and the heating plate (71) is used to heat the liquid in the cylinder (1); the control unit (3) is used to control the heating temperature and heating time of the heating plate (71) according to the results detected by the temperature sensor (51) and the liquid level sensor (52).

5. An amino acid recycling system according to claim 4, characterized in that: The top of the cylinder (1) is provided with an exhaust hole, and a solenoid valve (81) is installed on the exhaust hole. The solenoid valve (81) is connected to an exhaust gas treatment unit (8), and the exhaust gas treatment unit (8) is used to treat the exhaust gas evaporated in the cylinder (1); the control unit (3) is used to control the opening size of the solenoid valve (81) according to the result detected by the pressure sensor (53); the exhaust gas treatment unit (8) comprises a No. 1 treatment box (82), a No. 2 treatment box (83) and a No. 3 treatment box (84) which are connected in sequence, and the No. 1 treatment box (82) is connected to the solenoid valve (81); the No. 1 treatment box (82) is used to treat the acid gas in the exhaust gas, the No. 2 treatment box (83) is used to treat the ammonia in the exhaust gas, and the No. 3 treatment box (84) is used to treat the small molecular acid generated after the ammonia reaction.

6. An amino acid recycling system according to claim 4, characterized in that: The temperature sensor (51) is an infrared temperature sensor.

7. An amino acid recycling system according to claim 4, characterized in that: The liquid level sensor (52) is a radar liquid level sensor.

8. An amino acid recycling system according to claim 5, characterized in that: The pressure sensor (53) is a differential pressure sensor.

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