A synthetic l-arginine concentration device and method

Abstract

This invention proposes a device and method for synthesizing and concentrating L-arginine, belonging to the field of L-arginine concentration technology. The L-arginine concentration device includes a scraper assembly mounted outside a rotating shaft and a scraper assembly control structure located on an end cap at the front end of the cylinder. The scraper assembly includes a U-shaped plate body. A suction chamber is disposed on the side of the plate body closest to and parallel to the rotating shaft, and a spray chamber is disposed on the side of the plate body away from and parallel to the rotating shaft. A connecting chamber is disposed on two sides of the plate body perpendicular to the rotating shaft, connecting the suction chamber and the spray chamber. The plate body has a spray port and a suction port, and the spray chamber contains a switch column for opening or closing the spray port and a switch plate for opening or closing the suction port. This invention has the advantages of more uniform liquid distribution and higher concentration efficiency.

Description

An apparatus and method for synthesizing and concentrating L-arginine Technical Field

[0001] This invention relates to the field of L-arginine synthesis and concentration technology, specifically to an apparatus and method for L-arginine synthesis and concentration. Background Technology

[0002] L-arginine is an organic compound with the molecular formula C6H2O. 14 Nitrogen oxides (N4O2) are a non-essential amino acid for adults, but their production rate in the body is relatively slow. They are an essential amino acid for infants and young children and have a certain detoxification effect. They are abundant in protamine and other proteins, and are a basic component of various proteins, exhibiting a wide range of forms. The concentration process is a crucial step in the synthesis of L-arginine. A low-temperature vacuum concentrator, as one of the devices used for concentrating and synthesizing L-arginine, mainly consists of a concentrator, condenser and heating unit, vacuum pump, and chiller. The rotary drum, as the core component of the concentrator, primarily functions to achieve uniform distribution of the solution on the inner wall of the drum by agitating the solution inside. A common method of agitation in rotary drums is to use rotating scrapers inside the drum. These scrapers sweep across the solution at the bottom of the inner cavity, lifting it up and forming a film-like structure on the inner wall of the drum, thereby improving the evaporation and concentration effect.

[0003] However, the effectiveness of liquid distribution depends on the distance between the scraper and the inner wall of the cylinder, as well as the rotation speed of the scraper. This means that the distribution effect is severely affected by the internal conditions of the cylinder, especially after a period of use. Scaling on the inner wall or scraper misalignment will both reduce the distribution effect. Simultaneously, the distribution effect on the top wall of the cylinder also urgently needs improvement. Therefore, this application provides an apparatus and method for synthesizing and concentrating L-arginine. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention proposes a synthetic L-arginine concentration apparatus and method that provides more uniform liquid distribution and higher concentration efficiency.

[0005] The technical solution of this invention is implemented as follows:

[0006] The first aspect of the present invention provides a synthetic L-arginine concentration apparatus, comprising a cylindrical body and a rotary scraper disposed within the cylindrical body. The rotary scraper includes a rotating shaft rotatably mounted on the cylindrical body, a scraper assembly mounted outside the rotating shaft, and a scraper assembly control structure disposed on an end cap at the front end of the cylindrical body, wherein:

[0007] The scraper assembly includes a plate body portion in a "return" shape. A suction chamber is provided inside one side edge of the plate body portion that is close to the rotating shaft and parallel to the rotating shaft. A jet chamber is provided inside the other side edge of the plate body portion that is far from the rotating shaft and parallel to the rotating shaft. A connecting chamber for connecting the suction chamber and the jet chamber is provided inside the two side edges of the plate body portion perpendicular to the rotating shaft.

[0008] A piston block and a screw rod for driving the axial displacement of the piston block parallel to the rotating shaft are provided inside the suction chamber. A jet port and a suction port are respectively formed on the outer end face of the side edge of the plate body portion where the jet chamber is provided and on the side surface in front based on the rotation direction of the rotary scraper. A switch column for opening or blocking the jet port and a switch plate for opening or blocking the suction port are provided inside the jet chamber.

[0009] The control structure of the scraper assembly includes an acceleration gear set provided at one end of the screw rod, an external rack and an internal rack fixedly installed on the end cover. When the acceleration gear set passes through the internal rack, it drives the screw rod to rotate, so that during the displacement of the piston block, the plate body portion sucks the solution from the bottom of the inner cavity of the cylinder through the suction port. When the acceleration gear set passes through the external rack, it drives the screw rod to rotate, so that during the displacement of the piston block, the plate body portion sprays the solution from the jet port onto the top wall of the inner cavity of the cylinder.

[0010] Furthermore, the switch column is rotatably installed on the outer end of the cavity of the jet chamber. A through jet channel is formed in the middle of the switch column, and the jet channel is set to be adapted to the size of the jet port. The inner end of the switch plate is rotatably installed on the inner wall of the side of the jet chamber where the suction port is formed. The suction ports are equidistantly formed on the plate body portion in a state parallel to the rotating shaft. A sealing block inserted into the suction port from the inside to the outside is provided on the surface of the switch plate.

[0011] Furthermore, arc-shaped grooves adapted to the switch column are formed on both inner wall surfaces of the jet chamber. When the jet chamber is in a jet state, the edge of the groove opening of the arc-shaped groove, the jet port and the jet channel are flush. An inwardly protruding inner convex portion is provided at the position between two suction ports on the inner wall surface of the jet chamber corresponding to the suction port. The inner surface of the inner convex portion slopes from the inner wall surface of the jet chamber to the inner groove opening of the arc-shaped groove from the inside to the outside. The switch plate is set to be adapted to the shape of the inner convex portion. In the arrangement direction of the jet ports, the two side surfaces of the switch plate contact the side surfaces of the inner convex portion. When the suction port is in an open state, the end of the outer surface of the switch plate close to the jet port is outside the groove formed between two adjacent inner convex portions. When the sealing plate is inserted into the suction port, the inner surface of the switch plate is flush with the inner surface of the inner convex portion.

[0012] Furthermore, on the inner wall surface of the spray channel relative to the suction port, there is a slope extending from the inner edge of the arc-shaped groove on that inner wall surface. When the suction port is open, the inner surface of the switch plate facing the spray port is supported on the slope. Both ends of the switch column are provided with top blocks, and both ends of the switch plate are provided with top plates. The top blocks are configured such that when the switch column rotates from a state where the spray channel is perpendicular to the spray port to a state where the spray channel is flush with the spray port, the top blocks push against the top plates, causing the switch plate to rotate with its inner end as the center, inserting the sealing plate into the suction port to block the suction port.

[0013] Furthermore, two piston blocks are symmetrically arranged in the suction chamber. Two overflow holes are opened in the middle of the two side walls of the suction chamber. When the piston block is located at the innermost position of the suction chamber, the overflow holes are blocked. The width of the piston block is smaller than the width of the connecting cavity, so that the connecting cavity is connected to the suction chamber when the piston block is located at the outermost position of the suction chamber. A threaded sleeve is fixedly installed inside the piston block. Both ends of the lead screw penetrate the plate body. The lead screw is configured as a bidirectional lead screw to drive the two piston blocks to move synchronously relative to each other or move in opposite directions in the suction chamber.

[0014] Furthermore, a guide rod is rotatably installed inside the suction chamber, and a sleeve is fixedly installed inside the piston block and slidably sleeved on the surface of the guide rod. The surface of the guide rod is provided with drive grooves corresponding to the displacement stroke of the two piston blocks between the innermost and outermost positions in the suction chamber. The inner surface of the sleeve is provided with a drive rod whose end is inserted into the drive groove. The drive groove includes a spiral part, a straight part, and an arc-shaped part distributed sequentially from the inside to the outside along the axial direction of the guide rod. The spiral part is configured to drive the guide rod to rotate 90° counterclockwise when the piston block moves outward. The arc-shaped part is configured to extend counterclockwise from the outer end of the straight part on the surface of the guide rod and the depth gradually decreases from the same as the straight part to zero. The sleeve is provided with a spring for the guide rod whose end extends from the sleeve into the drive groove.

[0015] A steel wire rope is connected between the guide rod and the switch post at their oriented ends to keep the switch post and guide rod rotating synchronously. Both ends of the switch post are provided with a rotary torsion spring between them and the plate body to provide elastic force for keeping the switch post in a state where the spray channel is perpendicular to the spray nozzle. The arc-shaped part is designed so that when the drive rod enters the connection between the straight part and the arc-shaped part, the drive rod is pressed into the rod sleeve by the recovery process of the guide rod rotating 90° clockwise under the action of the rotary torsion spring, so that it leaves the drive groove and moves to the surface of the guide rod.

[0016] A connecting ring is rotatably mounted on the inner side of the rod sleeve. A sealing rod adapted to the straight part is provided on the inner surface of the connecting ring, and the inner end of the straight part extends inward with an extension section. When the piston block is in the innermost position, the sealing rod is located in the extension section.

[0017] Furthermore, both ends of the guide rod and the switch post are provided with an outward extension shaft. The outer end of the outward extension shaft passes through the plate body and extends to the outer side of the plate body. The two ends of the wire rope are respectively fixed between the two outward extension shafts on the same side of the switch post and the guide rod. The end of the wire rope connected to the outward extension shaft on the switch post is wrapped around the outward extension shaft. Both ends of the plate body are provided with a cover. The wire rope is located in the sealed cavity formed by the cover and the plate body.

[0018] Furthermore, the scraper assembly is provided in multiple sets along the axial direction of the rotating shaft, and each set of scraper assemblies is centrally symmetrically distributed in the circumferential direction of the rotating shaft. The lead screws of adjacent sets of scraper assemblies are fixedly connected. The inner surface of the front end cover is provided with a mounting groove. The scraper drive assembly is located in the mounting groove. The rear end slot of the mounting groove is provided with a rotating ring. The front end of the lead screw in the foremost scraper assembly passes through the rotating ring and connects to the power output gear of the acceleration gear set. The power input gear in the acceleration gear set is rotatably mounted on the rotating ring. The outer rack and the inner rack are both fixedly mounted on the inner wall of the mounting groove.

[0019] Furthermore, the inner toothed rack is configured to correspond to the arc trajectory of the plate portion during the process of the suction port entering the cylindrical solution and leaving the cylindrical solution, and the outer toothed rack is configured to correspond to the arc trajectory of the plate portion during the process of the injection port passing through the top wall of the inner cylinder.

[0020] A second aspect of the present invention provides a method for synthesizing and concentrating L-arginine, using the above-described apparatus for synthesizing and concentrating L-arginine, the method comprising the following steps:

[0021] Step 1: Raw material preparation: Prepare reactants containing arginine. The reactants can be obtained through fermentation or chemical synthesis.

[0022] Step 2: Prepare the reaction mixture: Mix the reactants with a certain amount of acidic or basic solvent to form a reaction mixture, and introduce it into the L-arginine synthesis concentration device;

[0023] Step 3: Control the pH value of the reaction mixture to maintain the reaction under alkaline conditions. The L-arginine synthesis and concentration device uses a rotary scraper to evenly distribute the reaction mixture onto the inner wall of the cylinder. At the same time, the L-arginine synthesis and concentration device uses its heating system to heat the reaction mixture, so that the solvent in the reaction mixture is evaporated and concentrated to produce L-arginine.

[0024] Step 4, Crystallization and Separation: The concentrated product is crystallized and separated to extract L-arginine from the solution.

[0025] The present invention has the following beneficial effects:

[0026] 1. The scraper assembly distributes the solution to the cylinder through a spraying method, which ensures that the solution can effectively cover the entire inner wall of the cylinder, thereby achieving better solution distribution and improving concentration efficiency.

[0027] 2. The solution distribution is completed by suction and spraying. The amount of solution drawn and sprayed is stable and reliable, which can ensure long-term effective operation.

[0028] 3. By utilizing the process of spraying the solution, when clean water is injected into the cylinder for cleaning, the spraying effect can also improve the cleaning efficiency in the cylinder cleaning process.

[0029] 4. The process of solution suction and spraying is automatically completed by the scraper assembly control structure in conjunction with the rotation process of the scraper assembly. It has a simple structure and outstanding effect.

[0030] 5. During the spraying process, the displacement of the piston block, in conjunction with the design of the rod sleeve, drive rod, and drive groove, simultaneously switches the spray port from a blocked to an open state and the suction port from an open to a blocked state. Meanwhile, during spraying, the switch plate keeps the suction port tightly closed under the spraying pressure. During suction, the switch plate keeps the suction port open under the suction pressure and the impact of the solution. The design is ingenious and the effect is outstanding. Attached Figure Description

[0031] Figure 1 is an overall schematic diagram of the L-arginine synthesis and concentration apparatus of the present invention;

[0032] Figure 2 is a partial cross-sectional view of the L-arginine synthesis and concentration apparatus of the present invention;

[0033] Figure 3 is a schematic diagram showing that multiple scraper assemblies of the L-arginine synthesis and concentration device of the present invention are centrally symmetrically distributed on the rotation axis;

[0034] Figure 4 is an enlarged view of section A in Figure 3 of the L-arginine synthesis and concentration apparatus of the present invention;

[0035] Figure 5 is an enlarged view of section B in Figure 3 of the L-arginine synthesis and concentration apparatus of the present invention;

[0036] Figure 6 is a partial cross-sectional view of the scraper assembly of the L-arginine synthesis and concentration apparatus of the present invention;

[0037] Figure 7 is an enlarged view of section C in Figure 6 of the L-arginine synthesis and concentration apparatus of the present invention.

[0038] Figure 8 is an enlarged view of point D in Figure 6 of the L-arginine synthesis and concentration apparatus of the present invention.

[0039] Figure 9 is a schematic diagram of the plate portion of the L-arginine synthesis and concentration apparatus of the present invention after being cut open from the middle position in the thickness direction along the width direction.

[0040] Figure 10 is an enlarged view of point E in Figure 9 of the L-arginine synthesis and concentration apparatus of the present invention.

[0041] Figure 11 is an enlarged view of point F in Figure 9 of the L-arginine synthesis and concentration apparatus of the present invention.

[0042] Figure 12 is a schematic diagram of the cut-open plate portion of the L-arginine synthesis and concentration apparatus of the present invention, as shown in Figure 9.

[0043] Figure 13 is a schematic diagram of the other half of the cut plate portion in Figure 9 of the L-arginine synthesis and concentration apparatus of the present invention.

[0044] Figure 14 is a schematic diagram of the connection between the switch column and the guide rod of the L-arginine synthesis and concentration device of the present invention.

[0045] Figure 15 is a cross-sectional view of the piston block and rod sleeve of the L-arginine synthesis and concentration apparatus of the present invention.

[0046] Figure 16 is an enlarged view of point G in Figure 15 of the L-arginine synthesis and concentration apparatus of the present invention.

[0047] Figure 17 is an enlarged view of section H in Figure 15 of the L-arginine synthesis and concentration apparatus of the present invention. Detailed Implementation

[0048] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] Please refer to Figures 1 to 17. A first aspect of the present invention provides a synthetic L-arginine concentration apparatus, which mainly includes a cylinder 37 and a rotating scraper disposed within the cylinder 37. A heating bushing is provided at the bottom of the cylinder 37, a feed inlet is provided at one end of the top of the cylinder 37, a discharge outlet is provided at the bottom of the cylinder 37, a gas-liquid separator is provided at the top of the cylinder 37, and the discharge pipe of the separator is connected to a condenser. An end cap is provided at the front end of the cylinder 37.

[0050] The rotary scraper includes a rotating shaft rotatably mounted on the cylinder 37, a scraper assembly mounted outside the rotating shaft, and a scraper assembly control structure disposed on the end cover. The front end of the rotating shaft extends from the end plate and is connected to a power unit, which can be a rotary motor, for driving the rotary scraper assembly to rotate.

[0051] The scraper assembly includes a scraper body 1 and a suction chamber 2, a spray chamber 3, and a connecting chamber 4 disposed within the scraper body 1. The scraper body 1 is generally "U"-shaped and is fixedly mounted on the surface of the rotating shaft in an axial state parallel to the rotating shaft. The scraper body 1 has two sides parallel to the rotating shaft and two sides perpendicular to the rotating shaft. The suction chamber 2 is disposed within one of the two sides of the scraper body 1 parallel to the rotating shaft, closer to the rotating shaft. The spray chamber 3 is disposed within one of the two sides of the scraper body 1 parallel to the rotating shaft, farther from the rotating shaft. The connecting chambers 4 are disposed within the two sides of the scraper body 1 perpendicular to the rotating shaft, and the two connecting chambers 4 connect the two ends of the suction chamber 2 and the spray chamber 3, respectively.

[0052] The scraper assembly also includes a spray nozzle 7, a suction port 8, a switch post 9, a switch plate 10, a piston block 5, and a lead screw 6. The spray nozzle 7 is located on the outer end face of the side of the plate body 1 where the spray chamber 3 is located, ensuring that the spray nozzle 7 always faces the inner wall of the cylinder 37. The suction port 8 is located on the side surface of the plate body 1 on the side where the spray chamber 3 is located, with reference to the rotation direction of the rotary scraper. The switch post 9 is located inside the spray chamber 3 and close to the spray nozzle 7, and is used to control the opening or closing of the spray nozzle 7. The switch plate 10 is located on the inner wall surface of the spray chamber 3 corresponding to the suction port 8, and is used to control the opening or closing of the suction port 8.

[0053] The piston block 5 is slidably disposed within the suction chamber 2. As it moves from the innermost position to the outermost position within the suction chamber 2, the solution in the suction chamber 2, the connecting chamber 4, and the spray chamber 3 is ejected from the spray port 7. Conversely, as it moves from the outermost position to the innermost position within the suction chamber 2, the spray chamber 3, the connecting chamber 4, and the suction chamber 2 are drawn into the suction port 8. A lead screw 6 is rotatably mounted within the suction chamber 2 and threadedly connected to the piston block 5. The lead screw 6 drives the piston block 5 to move axially parallel to the rotation axis between the innermost and outermost positions within the suction chamber 2, thereby achieving the function of spraying or suctioning solution from the plate body 1.

[0054] When the plate body 1 draws in solution, the switch column 9 blocks the spray port 7 and the switch plate 10 opens the suction port 8. When the plate body 1 sprays solution, the switch column 9 opens the spray port 7 and the switch plate 10 blocks the suction port 8.

[0055] The scraper assembly control structure includes an acceleration gear set 32, an external rack 33, and an internal rack 34. The acceleration gear set 32 ​​is located at one end of the lead screw 6 and is used to drive the lead screw 6 forward or reverse, thereby controlling the spraying or suction of solution by the scraper body 1. The external rack 33 and the internal rack 34 are both fixedly mounted on the end cap. During the rotation of the rotary scraper, the acceleration gear set 32 ​​follows the lead screw 6 in a circular motion around the axis of rotation.

[0056] When the acceleration gear set 32 ​​passes the internal rack 34, it meshes with the internal rack 34, driving the acceleration gear set 32. The acceleration gear set 32 ​​then transmits power to the lead screw 6, causing the lead screw 6 to rotate forward, driving the piston block 5 from the outermost position to the innermost position of the suction chamber 2. At this time, the plate body 1 is in a state of suctioning solution from the bottom of the inner cavity of the cylinder 37. When the acceleration gear set 32 ​​passes the external rack 33, it meshes with the external rack 33, driving the acceleration gear set 32. The acceleration gear set 32 ​​then transmits power to the lead screw 6, driving the lead screw 6 to rotate in the reverse direction, driving the piston block 5 from the innermost position to the outermost position of the suction chamber 2. At this time, the plate body 1 is in a state of spraying solution from the spray nozzle 7 onto the inner top wall of the cylinder 37.

[0057] Specifically, the switch post 9 is rotatably mounted on the outer end of the spray chamber 3. A through spray channel 9.1 is formed in the middle of the switch post 9, and the spray channel 9.1 is configured to match the size of the spray nozzle 7. When the plate part 1 is in the spraying state, the spray channel 9.1 is flush with the spray nozzle 7. When the plate part 1 is in the suction state, the spray channel 9.1 is perpendicular to the spray nozzle 7, at which point the switch post 9 blocks the spray nozzle 7. The switch post 9 can open or close the spray nozzle 7 by rotating it 90° forward or backward.

[0058] The inner end of the switch plate 10 is rotatably mounted on the inner wall of the injection chamber 3 on one side where the suction port 8 is located. The suction ports 8 are equidistantly located on the plate body 1 in a state parallel to the rotation axis, and the surface of the switch plate 10 is provided with a sealing block 11 for inserting into the suction port 8 from the inside to the outside. The outer end of the switch plate 10 rotates outward with its inner end as the axis, so that the sealing block 11 is inserted into the corresponding suction port 8 to seal the suction port 8.

[0059] Furthermore, both sides of the inner wall of the spray chamber 3 are provided with arc-shaped grooves 12 that are compatible with the switch post 9. When the spray chamber 3 is in the spraying state, the edge of the arc-shaped groove 12, the spray port 7 and the spray channel 9.1 are all flush.

[0060] An inwardly protruding part 13 is provided on the inner wall of the spray chamber 3 on one side corresponding to the suction port 8, located between the two suction ports 8. The inner surface of the inner protrusion 13 is an inclined surface extending from the inner wall of the spray chamber 3 towards the inner side opening of the arc groove 12 from the inside out. The switch plate 10 is configured to fit the shape of the inner protrusion 13, and in the arrangement direction of the spray ports 7, the two sides of the switch plate 10 are in contact with the side surface of the inner protrusion 13.

[0061] A groove 14 is formed between two adjacent inner protrusions 13. When the sealing plate is inserted into the suction port 8, the inner surface of the switch plate 10 is flush with the inner surface of the inner protrusion 13. When the suction port 8 is blocked and the plate body 1 sprays solution, the solution sprayed from the connecting cavity 4 into the spray cavity 3 enters the spray channel 9.1 through the spray cavity 3. The inner protrusion 13 and the inner surface of the switch plate 10 guide the solution, which helps the solution enter the spray channel 9.1. The pressure of the solution on the switch plate 10 helps to keep the suction port 8 blocked. When the suction port 8 is open, the outer side of the switch plate 10 near the spray port 7 is outside the groove 14. At this time, during the process of suctioning the solution, the solution enters from the suction port 8, flows to the outer surface of the switch plate 10, and then enters the spray cavity 3 through the gap between the two side walls of the switch plate 10 and the groove 14. After that, it enters the suction cavity 2 through the connecting cavity 4 and fills the spray cavity 3, the connecting cavity 4, and the suction cavity 2.

[0062] Furthermore, a sloped surface 15 is provided on the inner wall of the spray channel 9.1 on one side opposite the suction port 8. The sloped surface 15 is configured as an inclined structure extending from the inner edge of the arc-shaped groove 12 towards the inner wall of the spray channel 9.1 from the outside to the inside. When the suction port 8 is open, the end of the inner surface of the switch plate 10 facing the spray port 7 is supported on the sloped surface 15. At this time, the suctioned solution impacts the outer surface of the switch plate 10 and the sealing plate, applying pressure. Combined with the supporting effect of the sloped surface 15 on the switch plate 10, the switch plate 10 is fixed to maintain the suction port 8 in a stable open state.

[0063] Both ends of the switch post 9 are provided with top blocks 16, and both ends of the switch plate 10 are provided with top plates 17. The top blocks 16 are configured such that when the switch post 9 rotates from a state where the spray channel 9.1 is perpendicular to the spray nozzle 7 to a state where the spray channel 9.1 is flush with the spray nozzle 7, the top blocks 16 push the top plates 17 to rotate the switch plate 10 around its inner end, inserting the sealing plate into the suction port 8 to block the suction port 8. At this time, the suction port 8 can be blocked when the spray nozzle 7 is open, and the suction port 8 can be open when the spray nozzle 7 is blocked.

[0064] The inner rack 34 is set to correspond to the arc trajectory of the plate part 1 during the process of the suction port 8 entering the solution in the cylinder 37 and leaving the solution in the cylinder 37, and the outer rack 33 is set to correspond to the arc trajectory of the plate part 1 during the process of the injection port 7 passing through the inner top wall of the cylinder 37.

[0065] Multiple scraper assemblies are arranged axially along the rotating shaft, and each scraper assembly is centrally symmetrically distributed in the circumferential direction of the rotating shaft. The lead screws 6 of adjacent scraper assemblies are fixedly connected. The inner surface of the front end cover is provided with a mounting groove. The scraper drive assembly is located in the mounting groove. A rotating ring 26 is provided at the rear end of the mounting groove. The front end of the lead screw 6 in the frontmost scraper assembly passes through the rotating ring 26 and connects to the power output gear 32.2 of the acceleration gear set 32. The power input gear 32.1 in the acceleration gear set 32 ​​is rotatably mounted on the rotating ring 26. The outer rack 33 and the inner rack 34 are both fixedly mounted on the inner wall of the mounting groove. The rotating ring 26 rotates at the opening of the mounting groove to cooperate with the circumferential movement of the scraper assembly, while separating the inner cavity of the cylinder 37 from the inner cavity of the mounting groove.

[0066] By making the above-described arrangement as in this embodiment, the suction port 8 is located on the side of the plate body 1. When the plate body 1 sweeps past the bottom of the inner cavity of the cylinder 37 and passes through the solution inside the cylinder 37, the suction port 8 is located on the front side of the plate body 1 in the direction of rotation. This allows the relative motion between the plate body 1 and the solution when the suction port 8 passes through the solution to be converted into energy for the solution to rush in from the suction port 8. This improves the stability of the switch plate 10 in keeping the suction port 8 in an open state and reduces the resistance of the piston block 5 when suctioning the solution. The spray port 7 is located on the outer end face of the plate body 1. When the plate body 1 rotates past the inner top wall of the cylinder 37, the centrifugal force on the solution will cause the solution to be sprayed out from the spray port 7, improving the spray stability and reducing the resistance of the piston block 5 in squeezing the solution for spraying.

[0067] Two piston blocks 5 are symmetrically arranged within the suction chamber 2, dividing it into two identical cavities. The innermost position of each piston block 5 within the suction chamber 2 is the center position. Specifically, a threaded sleeve 19 is fixedly installed within each piston block 5, and both ends of a lead screw 6 penetrate the plate body 1. The lead screw 6 is configured as a bidirectional lead screw 6 to drive the two piston blocks 5 to move synchronously relative to each other or in opposite directions within the suction chamber 2. By displacing from the center position of the suction chamber 2 outwards, the two piston blocks 5 force the solution from the two cavities of the suction chamber 2 into the injection chamber 3 through two connecting chambers 4, and finally eject it through the injection channel 9.1 and the injection port 7.

[0068] Two overflow holes 18 are provided in the middle of each side wall of the suction chamber 2. The two overflow holes 18 are respectively set at the innermost position of the two piston blocks 5, so that when the piston block 5 is at the innermost position of the suction chamber 2, the corresponding overflow hole 18 is blocked. The width of the piston block 5 is smaller than the width of the connecting cavity 4, so that when the piston block 5 is at the outermost position of the suction chamber 2, the connecting cavity 4 is connected to the suction chamber 2. At this time, the solution remaining in the spray chamber 3, the connecting cavity 4 and the suction chamber 2 will flow out of the inner cavity of the plate body 1 from the residual holes. Especially when the piston block 5 returns from the outermost position to the innermost position of the suction chamber 2, the solution remaining in the suction chamber 2 can be pressurized through the overflow holes 18 and discharged from the plate body 1 during the relative movement of the two piston blocks 5, thereby emptying the plate body 1. By making such a configuration, the impurities remaining in the plate body 1 or the scale sucked into the plate body 1 can be discharged in a timely and effective manner.

[0069] A guide rod 20 parallel to the lead screw 6 is rotatably installed inside the suction chamber 2. A rod sleeve 21 is fixedly installed inside the piston block 5 and slidably sleeved on the surface of the guide rod 20. The surface of the guide rod 20 is provided with drive grooves 22 corresponding to the displacement stroke of the two piston blocks 5 between the innermost and outermost positions of the suction chamber 2. The inner surface of the rod sleeve 21 is provided with a drive rod 23 whose end is inserted into the drive groove 22.

[0070] The drive groove 22 includes a spiral portion 22.1, a straight portion 22.2, and an arc-shaped portion 22.3 distributed sequentially from the inside to the outside along the axial direction of the guide rod 20. The spiral portion 22.1 is configured to drive the guide rod 20 to rotate counterclockwise by 90° when the piston block 5 is displaced outward. The arc-shaped portion 22.3 is configured to extend counterclockwise from the surface of the guide rod 20 to the outer end of the straight portion 22.2, and the depth gradually decreases from the same as the straight portion 22.2 to zero. A spring 24 is provided inside the sleeve 21, with the end of the guide rod 20 extending from the sleeve 21 into the drive groove 22.

[0071] A steel wire rope 25 is connected between the guide rod 20 and the switch post 9 at their oriented ends to maintain the synchronous rotation of the switch post 9 and the guide rod 20. Rotary torsion springs are provided at both ends of the switch post 9 and the plate body 1 to provide elastic force for maintaining the switch post in a state where the spray channel 9.1 is perpendicular to the spray nozzle 7. The arc-shaped portion 22.3 is configured such that when the drive rod 23 enters the connection between the straight portion 22.2 and the arc-shaped portion 22.3, the drive rod 23 is pressed into the rod sleeve 21 by the recovery process of the guide rod 20 rotating 90° clockwise under the action of the rotary torsion spring, thus leaving the drive groove 22 and moving to the surface of the guide rod 20.

[0072] A connecting ring 27 is rotatably mounted on the inner side of the sleeve 21. A sealing rod 28 adapted to the straight portion 22.2 is provided on the inner surface of the connecting ring 27, and an extension section 29 extends inward from the inner end of the straight portion 22.2. When the piston block 5 is in its innermost position, the sealing rod 28 is located in the extension section 29. At this time, the sealing rod 28 can always maintain the sealing performance between the piston block 5 sleeve 21 and the guide rod 20 to ensure stable suction force and injection pressure.

[0073] Both ends of the guide rod 20 and the switch post 9 are provided with an extension shaft 30. The outer end of the extension shaft 30 passes through the plate body 1 and extends to the outer side of the plate body 1. The two ends of the wire rope 25 are respectively fixed between the two extension shafts 30 on the same side of the switch post 9 and the guide rod 20. The end of the wire rope 25 connected to the extension shaft 30 on the switch post 9 is wrapped around the extension shaft 30. Both ends of the plate body 1 are provided with a cover 31. The wire rope 25 is located in the sealed cavity formed by the cover 31 and the plate body 1.

[0074] In the initial stage of piston block 5 moving from the innermost to the outermost position of suction chamber 2, rod sleeve 21 drives drive rod 23 to move. Drive rod 23 drives guide rod 20 to rotate 90° counterclockwise through spiral part 22.1. The rotation of connecting ring 27 on rod sleeve 21 allows sealing rod 28 to rotate synchronously with guide rod 20, maintaining the seal between rod sleeve 21 and guide rod 20. During this process, guide rod 20 drives switch column 9 to rotate 90° through wire rope 25, opening spray port 7 and sealing suction port 8. Throughout the process of spray port 7 passing through the inner top wall of cylinder 37, drive rod 23 moves within straight part 22.2 to keep spray port 7 open, allowing the solution in plate part 1 to be sprayed from spray port 7 onto the inner top wall of cylinder 37, achieving uniform liquid distribution on the inner wall of cylinder 37 and improving concentration efficiency. After the injection port 7 passes through the inner top wall of the cylinder 37, the drive rod 23 enters the connection between the straight part 22.2 and the arc-shaped part 22.3. At this time, under the action of the rotary torsion spring, the switch column 9 rotates 90° in the opposite direction to restore and block the injection port 7, while the switch plate 10 opens the suction port 8. During the process of the drive rod 23 passing through the arc-shaped part 22.3, the spring 24 is compressed, the drive rod 23 retracts into the rod sleeve 21, and the end of the drive rod 23 disengages from the arc-shaped part 22.3 and moves to the surface of the guide rod 20.

[0075] As the piston block 5 moves from the outermost to the innermost position of the suction chamber 2, the end of the drive rod 23 moves on the surface of the guide rod 20. Throughout this process, the suction port 8 remains open and the injection port 7 remains blocked. When the piston block 5 reaches its innermost position, the drive rod 23 re-inserts into the drive groove 22 under the action of the spring 24, and the sealing rod 28 inserts into the extension section 29. The sealing rod 28 is located behind the drive rod 23 in the axial direction of the guide rod 20. To improve the effective driving effect of the drive rod 23 on the guide rod 20, a pressure plate 35 is provided on the top of the spring 24, and a telescopic rod 36 is provided on the top of the pressure plate 35. The top of the rod sleeve 21 and the piston block 5 are both provided with channels for the extension of the telescopic rod 36. When the top of piston block 5 contacts the inner top wall of suction chamber 2, the top of telescopic rod 36 contacts the inner top wall of suction chamber 2. At this time, the pressure rod presses down on spring 24, increasing the force of the end of drive rod 23 inserted into drive groove 22, ensuring that drive rod 23 applies force to guide rod 20 through spiral groove to stably drive guide rod 20 to rotate. When the top of piston block 5 disengages from the inner top wall of suction chamber 2, the top of telescopic rod 36 also disengages from the inner top wall of suction chamber 2. At this time, pressure plate 35 releases pressure on spring 24, facilitating the recovery of guide rod 20 under the action of rotary torsion spring. When the guide rod 20 rotates back, drive rod 23 is compressed by arc portion 22.3 and retracts into rod sleeve 21. During the return of piston block 5, the top of telescopic rod 36 re-enters the channel through the rounded corner between the inner top wall of suction chamber 2 and the inner wall of connecting cavity 4.

[0076] In this embodiment of the invention, when the power input gear 32.1 in the acceleration gear set 32 ​​begins to mesh with the external rack 33, the plate body 1 is in a state where the outer end is tilted upward, and the position where the power gear in the acceleration gear set 32 ​​separates from the external rack 33 is symmetrically distributed on both sides of the inner cavity of the cylinder 37 with the position where the external rack 33 begins to mesh.

[0077] The positions where the power input gear 32.1 in the acceleration gear set 32 ​​engages with the internal rack 34 and disengage from the internal rack 34 are symmetrically distributed on both sides of the inner cavity of the cylinder 37. By setting the circumference of the inner rack 34 drive circle to be larger than the circumference of the inner rack 34, when the power input gear 32.1 in the transmission gear set driven by the outer rack 33 and the inner rack 34 rotate in opposite directions by the same angle, the central angle covered by the teeth of the outer rack 33 is much smaller than the central angle covered by the teeth of the inner rack 34. This results in a smaller swing angle for the plate part 1 to draw the solution, and a smaller height between the suction port 8 and the inner bottom wall of the cylinder 37 during the process. This ensures that the suction port 8 is always inserted deep into the solution during the solution drawing process, thus ensuring a good solution drawing effect.

[0078] A second aspect of the present invention also provides a method for synthesizing and concentrating L-arginine, using the L-arginine synthesis and concentration apparatus provided in the above embodiments, the method comprising the following steps:

[0079] Step 1: Raw material preparation: Prepare reactants containing arginine. The reactants can be obtained through fermentation or chemical synthesis.

[0080] Step 2: Prepare the reaction mixture: Mix the reactants with a certain amount of acidic or basic solvent to form a reaction mixture, and introduce it into the L-arginine synthesis concentration device;

[0081] Step 3: Control the pH value of the reaction mixture to maintain the reaction under alkaline conditions. The L-arginine synthesis and concentration device uses a rotary scraper to evenly distribute the reaction mixture onto the inner wall of the cylinder 37. At the same time, the L-arginine synthesis and concentration device uses its heating system to heat the reaction mixture, so that the solvent in the reaction mixture is evaporated and concentrated to produce L-arginine.

[0082] Step 4, Crystallization and Separation: The concentrated product is crystallized and separated to extract L-arginine from the solution.

[0083] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for synthesizing and concentrating L-arginine, characterized in that, It includes a cylinder body (37) and a rotary scraper disposed inside the cylinder body (37). The rotary scraper includes a rotary shaft rotatably installed on the cylinder body (37), a scraper assembly installed outside the rotary shaft, and a scraper assembly control structure disposed on an end cover at the front end of the cylinder body (37). Among them: The scraper assembly includes a plate body portion (1) in a "return" shape. A suction chamber (2) is provided inside a side edge of the plate body portion (1) that is close to the rotary shaft and parallel to the rotary shaft. A spray chamber (3) is provided inside a side edge of the plate body portion (1) that is far from the rotary shaft and parallel to the rotary shaft. A communication chamber (4) for communicating the suction chamber (2) and the spray chamber (3) is provided inside two sides of the plate body portion (1) perpendicular to the rotary shaft; A piston block (5) and a screw rod (6) for driving the axial displacement of the piston block (5) parallel to the rotary shaft are provided inside the suction chamber (2). Spray ports (7) and suction ports (8) are respectively opened on the outer end face of the side edge of the plate body portion (1) provided with the spray chamber (3) and on the side surface located in front based on the rotation direction of the rotary scraper. A switch column (9) for opening or blocking the spray port (7) and a switch plate (10) for opening or blocking the suction port (8) are provided inside the spray chamber (3); The scraper assembly control structure includes an acceleration gear set (32) provided at one end of the screw rod (6), an external rack (33) and an internal rack (34) fixedly installed on the end cover. When the acceleration gear set (32) passes through the internal rack (34), it drives the screw rod (6) to rotate, so that during the displacement of the piston block (5), the plate body portion (1) sucks the solution from the bottom of the inner cavity of the cylinder body (37) through the suction port (8). When the acceleration gear set (32) passes through the external rack (33), it drives the screw rod (6) to rotate, so that during the displacement of the piston block (5), the plate body portion (1) sprays the solution from the spray port (7) onto the inner top wall of the cylinder body (37).

2. The L-arginine synthesis and concentration apparatus according to claim 1, characterized in that, The switch column (9) is rotatably installed on the outer end of the cavity of the spray chamber (3). A through spray channel (9.1) is opened in the middle part of the switch column (9), and the spray channel (9.1) is set to be adapted to the size of the spray port (7). The inner end of the switch plate (10) is rotatably installed on the inner wall of the spray chamber (3) on the side where the suction port (8) is opened. The suction ports (8) are equidistantly opened on the plate body portion (1) in a state parallel to the rotary shaft. A sealing block (11) inserted into the suction port (8) from the inside to the outside is provided on the surface of the switch plate (10).

3. The apparatus for synthesizing and concentrating L-arginine according to claim 2, characterized in that, Both sides of the inner wall of the spray chamber (3) are provided with arc-shaped grooves (12) that are adapted to the switch post (9). When the spray chamber (3) is in the spraying state, the groove edge, spray port (7) and spray channel (9.1) of the arc-shaped groove (12) are flush. On the inner wall of the spray chamber (3) corresponding to the suction port (8), there is an inwardly protruding part (13) located between the two suction ports (8). The inner surface of the inwardly protruding part (13) extends from the inner wall of the spray chamber (3) to the inner surface of the arc-shaped groove (12). The side slot extends with an inclined surface, and the switch plate (10) is configured to fit the shape of the inner protrusion (13). In the arrangement direction of the spray nozzle (7), the two sides of the switch plate (10) are in contact with the side surface of the inner protrusion (13). When the suction port (8) is open, the end of the outer surface of the switch plate (10) near the spray nozzle (7) is outside the groove (14) formed between two adjacent inner protrusions (13). When the sealing plate is inserted into the suction port (8), the inner surface of the switch plate (10) is flush with the inner surface of the inner protrusion (13).

4. The L-arginine synthesis and concentration apparatus according to claim 3, characterized in that, The inner wall of the spray channel (9.1) relative to the suction port (8) has a slope (15) extending from the inner edge of the arc groove (12) on the inner wall of that side. When the suction port (8) is open, the inner surface of the switch plate (10) facing the spray port (7) is supported on the slope (15). Both ends of the switch column (9) are provided with top blocks (16), and both ends of the switch plate (10) are provided with top plates (17). The top blocks (16) are configured such that when the switch column (9) rotates from the state where the spray channel (9.1) is perpendicular to the spray port (7) to the state where the spray channel (9.1) is flush with the spray port (7), it pushes the top plate (17) outward so that the switch plate (10) rotates with its inner end as the center and inserts the sealing plate into the suction port (8) to seal the suction port (8).

5. The apparatus for synthesizing and concentrating L-arginine according to claim 1, characterized in that, Two piston blocks (5) are symmetrically arranged in the suction chamber (2). Two overflow holes (18) are opened in the middle of both sides of the suction chamber (2). When the piston block (5) is located in the innermost position of the suction chamber (2), the overflow holes (18) are blocked. The width of the piston block (5) is smaller than the width of the connecting cavity (4), so that when the piston block (5) is located in the outermost position of the suction chamber (2), the connecting cavity (4) is connected to the suction chamber (2). A threaded sleeve (19) is fixedly arranged in the piston block (5). Both ends of the screw (6) penetrate the plate body (1). The screw (6) is set as a bidirectional screw (6) to drive the two piston blocks (5) to move synchronously relative to each other or move in opposite directions in the suction chamber (2).

6. The apparatus for synthesizing and concentrating L-arginine according to claim 1, characterized in that, A guide rod (20) is rotatably mounted inside the suction chamber (2). A rod sleeve (21) is fixedly mounted inside the piston block (5) and slidably sleeved on the surface of the guide rod (20). The surface of the guide rod (20) is provided with drive grooves (22) corresponding to the displacement stroke of the two piston blocks (5) between the innermost and outermost positions in the suction chamber (2). The inner surface of the rod sleeve (21) is provided with a drive rod (23) whose end is inserted into the drive groove (22). The drive groove (22) includes a spiral portion distributed sequentially from the inside to the outside along the axial direction of the guide rod (20). 22.1), a straight portion (22.2) and an arc-shaped portion (22.3), wherein the spiral portion (22.1) is configured to drive the guide rod (20) to rotate 90° counterclockwise when the piston block (5) moves outward, and the arc-shaped portion (22.3) is configured to extend counterclockwise from the outer end of the straight portion (22.2) on the surface of the guide rod (20) and the depth gradually decreases from the same as the straight portion (22.2) to zero, and the rod sleeve (21) is configured such that the end of the guide rod (20) extends from the rod sleeve (21) into the drive groove (22.3). The spring (24) inside; a steel wire rope (25) is connected between the guide rod (20) and the same-direction end of the switch post (9) to keep the switch post (9) and the guide rod (20) rotating synchronously. Both ends of the switch post (9) and the plate part (1) are provided with a rotary torsion spring to provide elastic force for keeping the switch post in a state where the spray channel (9.1) is perpendicular to the spray port (7). The arc-shaped part (22.3) is configured so that when the drive rod (23) enters the connection between the straight part (22.2) and the arc-shaped part (22.3), the guide rod (20) rotates. The recovery process of rotating 90° clockwise under the action of the torsion spring presses the drive rod (23) into the rod sleeve (21) to leave the drive groove (22) and move to the surface of the guide rod (20); a connecting ring (27) is rotatably installed on the inner side of the rod sleeve (21), and a sealing rod (28) adapted to the straight part (22.2) is provided on the inner surface of the connecting ring (27), and the inner end of the straight part (22.2) extends inward to the extension section (29). When the piston block (5) is in the innermost position, the sealing rod (28) is located in the extension section (29).

7. The apparatus for synthesizing and concentrating L-arginine according to claim 6, characterized in that, Both ends of the guide rod (20) and the switch post (9) are provided with an extension shaft (30). The outer end of the extension shaft (30) passes through the plate part (1) and extends to the outer side of the plate part (1). The two ends of the wire rope (25) are respectively fixed between the two extension shafts (30) on the same side of the switch post (9) and the guide rod (20). The end of the wire rope (25) connected to the extension shaft (30) on the switch post (9) is wrapped around the extension shaft (30). Both ends of the plate part (1) are provided with a cover (31). The wire rope (25) is located in the sealed cavity formed by the cover (31) and the plate part (1).

8. The apparatus for synthesizing and concentrating L-arginine according to claim 1, characterized in that, The scraper assembly is provided in multiple sets along the axial direction of the rotating shaft, and each set of scraper assemblies is centrally symmetrically distributed in the circumferential direction of the rotating shaft. The lead screws (6) of two adjacent sets of scraper assemblies are fixedly connected. The inner surface of the end cover is provided with a mounting groove. The scraper assembly is located in the mounting groove. The rear end slot of the mounting groove is provided with a rotating ring (26). The front end of the lead screw (6) in the frontmost scraper assembly passes through the rotating ring (26) and connects to the power output gear (32.2) of the acceleration gear set (32). The power input gear (32.1) in the acceleration gear set (32) is rotatably mounted on the rotating ring (26). The outer rack (33) and the inner rack (34) are both fixedly mounted on the inner wall of the mounting groove.

9. The apparatus for synthesizing and concentrating L-arginine according to claim 1, characterized in that, The inner rack (34) is set to correspond to the arc trajectory of the plate part (1) during the process of the suction port (8) entering the solution in the cylinder (37) and leaving the solution in the cylinder (37), and the outer rack (33) is set to correspond to the arc trajectory of the plate part (1) during the process of the injection port (7) passing through the inner top wall of the cylinder (37).

10. A method for synthesizing and concentrating L-arginine, using the L-arginine synthesis and concentration apparatus according to any one of claims 1 to 9, characterized in that, The method includes the following steps: Step 1, raw material preparation: prepare reactants containing arginine, which can be obtained by fermentation or chemical synthesis; Step 2, preparation of reaction mixture: mix the reactants with a certain amount of acidic or alkaline solvent to form a reaction mixture, and introduce it into the L-arginine synthesis concentration device; Step 3, control the pH value of the reaction mixture to keep it under alkaline conditions for reaction, the L-arginine synthesis concentration device uses a rotating scraper to evenly distribute the reaction mixture onto the inner wall of the cylinder (37), and at the same time, the L-arginine synthesis concentration device heats the reaction mixture so that the solvent in the reaction mixture is evaporated and L-arginine is concentrated; Step 4, crystallization and separation: crystallize and separate the concentrated product to separate L-arginine from the solution.

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