A preparation system and process for pyritinol hydrochloride

Abstract

The present invention relates to the technical field of pyritinol hydrochloride preparation, specifically a system and process for preparing pyritinol hydrochloride, including a still, wherein a rotating shaft is arranged inside the still. The system and process for preparing pyritinol hydrochloride, through the intermittent squeezing of a stirring arm, a moving ring is moved downward, so that impurities in a collecting tank fall into a chute, and the chute is in turn connected with a drain chute, so that impurities in the chute fall into a de-impurity zone, and impurities are prevented from interfering with normal distillation, and compared with the existing method of using a stirring member to move upward to reduce impurities from being raised, the moving ring driven by the stirring arm forms a transfer zone in the chute, and the region can be intermittently opened to extract impurities in the distillation zone, so as to avoid excessive interaction between the region where the impurities are located and the distillation zone, and the influence of impurities on distillation can be minimized, and the impurities deposited during the distillation process can be discharged sustainably, without opening the still for cleaning operations, and production efficiency can be improved by continuous distillation.

Description

Technical Field

[0001] The invention relates to the technical field of pyritinol hydrochloride preparation, and in particular to a system and process for preparing pyritinol hydrochloride. Background Art

[0002] Pyritinol hydrochloride is an organic compound. As a brain metabolism improving drug, it can promote the metabolism of glucose and amino acids in the brain, improve systemic assimilation, increase carotid artery blood flow, and improve cerebral blood flow.

[0003] In the production process of pyritinol hydrochloride, after the preparation of the crude pyritinol hydrochloride product is completed, it is generally necessary to use a vacuum distillation kettle to distill the crude pyritinol hydrochloride product.

[0004] The existing patent (publication number: CN118267733A) discloses a vacuum distillation device for chemical industry, including a still, a mounting plate, a piston, a stirring mechanism, a heat preservation mechanism, a condensation mechanism and a receiving bottle, wherein the mounting plate is fixedly mounted on the inner wall of the still, the piston is mounted inside the still through a lifting mechanism, a pressure sensor is fixedly mounted on the bottom of the piston, the stirring mechanism includes a rotating drum, the rotating drum is mounted on the bottom of the piston through a rotating assembly, and the condensation mechanism includes a water pump and a condenser. The above-mentioned prior art avoids lifting impurities by moving the stirring member upward, but the disturbed liquid flow in the still is still easy to bring up impurities, and the deposited impurities need to be cleaned separately, which affects the distillation efficiency.

[0005] In view of this, we propose a preparation system and process for pyritinol hydrochloride. Summary of the invention

[0006] The object of the present invention is to provide a system and process for preparing pyritinol hydrochloride, so as to solve the problem that the prior art proposed in the above background technology avoids raising impurities by moving up a stirring member, but the disturbed liquid flow in the kettle is still easy to bring up impurities, and the deposited impurities need to be cleaned separately, which affects the distillation efficiency. To achieve the above purpose, the present invention provides the following technical scheme: A system for preparing pyritinol hydrochloride, comprising a distillation kettle, a rotating shaft is arranged inside the distillation kettle, and a stirring arm is fixedly installed at the bottom end of the rotating shaft, a condensing tank is fixedly arranged on one side of the distillation kettle, and the condensing tank is connected to the distillation kettle through a pipeline, and a condensing water pipe is fixedly arranged inside the condensing tank.

[0007] An impurity separator matched with the stirring arm is arranged in the distillation kettle.

[0008] The impurity separator includes a base fixedly mounted on the inner wall of the distillation kettle, and the base divides the interior of the distillation kettle into an upper distillation zone and a lower impurity removal zone. An inverted triangular collecting groove is provided on the top surface of the base, and a slide groove connected to the collecting groove is provided inside the base, and a leakage groove penetrating the base is provided at the bottom of the slide groove.

[0009] The chute and the collecting trough are both configured as annular structures.

[0010] A track column is fixedly installed inside the slide groove, and a moving ring is movably arranged inside the slide groove. A through hole is opened on the surface of the moving ring, and the moving ring is slidably connected along the fixed column through the through hole.

[0011] An enlarged hole is provided inside the through hole, a spring is arranged on the surface of the fixed column and in the enlarged hole, and two ends of the spring are respectively connected to the track column and the moving ring, and the spring pushes the moving ring to move upward.

[0012] The top surface and the bottom surface of the movable ring are both set as triangular edges, the inner top wall and the inner bottom wall of the slide groove are both set as inclined walls, and the inclined surface of the inclined wall is adapted to the inclined surface of the triangular edge.

[0013] The top of the movable ring is fixedly connected with a protrusion matched with the stirring arm.

[0014] A lifting component is arranged on the stirring arm and the base.

[0015] Preferably, the lifting assembly includes a column cavity opened inside the stirring arm, and a plunger is slidably connected in the column cavity, a cutout connected to the column cavity is opened on the lower side of the stirring arm, the lower side surface of the plunger passes through the cutout, and a plurality of inclined grooves are opened on the lower side surface of the plunger, and a tooth column matching the inclined groove is fixedly provided on the top surface of the base.

[0016] A tension spring is arranged in the column cavity, and the tension spring is connected to the plunger.

[0017] A liquid cavity communicating with the column cavity is formed inside the stirring arm, a through opening communicating with the liquid cavity is formed on the side surface of the stirring arm, and a spray hole communicating with the liquid cavity is formed on the top surface of the stirring arm.

[0018] The stirring arm is provided with a hydraulic stirring component matched with the spray hole and the plunger.

[0019] Preferably, the hydraulic stirring assembly includes a ball groove opened on the top surface of the stirring arm, and the ball groove is connected to the spray hole. A ball head is rotatably connected in the ball groove, and a nozzle is obliquely arranged on the outer surface of the ball head, and the nozzle is connected to the spray hole.

[0020] The inner top wall of the liquid cavity is provided with a strip groove, and a slide matched with the plunger is slidably connected in the strip groove, and a top spring matched with the slide is arranged in the strip groove.

[0021] An inner groove connected to the strip groove and the ball groove is provided inside the stirring arm, and a rack is slidably connected in the inner groove. The rack is fixedly connected to the slide, and a gear ring is fixedly installed on the surface of the ball head, and the gear ring and the rack are meshed with each other.

[0022] Preferably, the condensate pipe is configured as a spiral structure.

[0023] Preferably, the leakage grooves are provided in a plurality and are distributed in a ring shape along the base, and a discharge valve cooperating with the leakage groove and the impurity removal area is provided at the bottom of the distillation kettle.

[0024] Preferably, the protrusion is configured as a triangular block structure that matches the rotation trajectory of the stirring arm.

[0025] Preferably, a frustum matching with the collecting trough is fixedly provided on the top surface of the base.

[0026] A preparation process of a preparation system of pyritinol hydrochloride comprises the following steps:

[0027] S1, the air inside still kettle is evacuated, the inside of still kettle is made to be vacuum state, and then the pyritinol hydrochloride crude product is squeezed into still kettle, and still kettle is heated afterwards, the pyritinol hydrochloride crude product is vaporized under low pressure environment, and the pyritinol hydrochloride crude product after the vaporization is condensed and liquefied by condensing water pipe in condensing tank, and then discharged and carried out subsequent processing;

[0028] S2. During the distillation process, the rotating shaft drives the stirring arm to rotate, so that the crude pyritinol hydrochloride product is evenly heated during the distillation process, and the impurities generated during the distillation process are deposited on the base;

[0029] S3, the impurities deposited on the base fall into the collecting trough, and the stirring arm intermittently contacts the convex block during the rotation process, and squeezes it and the moving ring to move downward. At this time, the upper triangular edge is separated from the upper inclined wall, the collecting trough is connected with the chute, and the lower triangular edge is fitted with the lower inclined wall to seal the leakage trough, so that the impurities in the collecting trough fall into the chute. After the stirring arm leaves, the moving ring moves up and resets. At this time, the chute is disconnected from the collecting trough and the distillation kettle, and is connected to the leakage trough, so that the impurities in the chute fall into the impurity removal area to prevent impurities from interfering with normal distillation;

[0030] S4, during the distillation process, the crude pyritinol hydrochloride in the kettle enters the liquid cavity along the through port, and while the stirring arm rotates over the tooth column, the tooth column pushes the plunger along the inclined groove to slide into the liquid cavity, and squeezes the crude pyritinol hydrochloride in the cavity, so that it is sprayed upward from the spray hole. After leaving the tooth column, the tension spring pulls the plunger back to its position, so that the liquid cavity is filled with liquid again;

[0031] S5. The plunger moves to squeeze the liquid flow in the spray hole and sprays out obliquely along the nozzle on the ball head. During this process, the plunger pushes the rack to move synchronously along the slide, and the rack drives the ball head to rotate along the gear ring, so that the liquid flow sprayed obliquely in the kettle synchronously performs circular motion.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] In the present invention, the movable ring is intermittently squeezed downward by the stirring arm, so that impurities in the collecting tank fall into the chute. After the stirring arm leaves, the movable ring moves upward and resets. At this time, the chute is disconnected from the collecting tank and the distillation kettle, and is connected to the leakage chute instead, so that the impurities in the chute fall into the impurity removal area, thereby avoiding impurities interfering with normal distillation. Compared with the existing method of moving the stirring member upward to reduce the lifting of impurities, the movable ring driven by the stirring arm forms a transfer area in the chute, and this area can be intermittently opened to extract impurities from the distillation area, so as to avoid excessive interaction between the impurity area and the distillation area, and the influence of impurities on distillation can be minimized. Impurities deposited during the distillation process can be continuously discharged without opening the distillation kettle for cleaning, and production efficiency can be improved through continuous distillation.

[0034] In the present invention, the crude pyritinol hydrochloride product in the kettle enters the liquid cavity along the through port, and in the process that the stirring arm rotates to pass over the tooth column, the tooth column pushes the plunger to slide into the liquid cavity along the inclined groove, and squeezes the crude pyritinol hydrochloride product in the cavity to be sprayed upward from the spray hole. After leaving the tooth column, the tension spring pulls the plunger back to its position, so that the liquid cavity is filled with liquid again, so that the liquid cavity is used to intercept the material, and the upward spraying of the liquid flow is realized in conjunction with the reciprocating displacement of the plunger. On the one hand, the vaporization efficiency can be improved by spraying, and on the other hand, the material in the kettle can be assisted to be homogenized from bottom to top, and the heating uniformity at different positions can be accelerated.

[0035] In the present invention, the liquid flow in the spray hole is squeezed by the displacement of the plunger to be obliquely sprayed along the nozzle on the ball head. In this process, the plunger synchronously pushes the rack to be displaced along the slide, and the rack is used to drive the ball head to rotate along the gear ring, so that the liquid flow obliquely sprayed in the kettle synchronously performs a circular motion. The rotation of the ball head is used to expand the disturbance range of the sprayed liquid flow, so that the liquid column formed by the injection rotates conically and is stirred again in the material. The circular motion of the liquid column and the upward spraying of the liquid flow realize three-dimensional stirring, which has a better heat dispersion effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0037] Figure 2 It is a cross-sectional view of the three-dimensional structure of the present invention;

[0038] Figure 3 It is a front cross-sectional view of the present invention;

[0039] Figure 4 It is a schematic diagram of the structure of the base and the stirring arm of the present invention;

[0040] Figure 5 It is a three-dimensional structural cross-sectional view of the base of the present invention;

[0041] Figure 6 For the present invention Figure 5 The enlarged view of point A in the middle;

[0042] Figure 7 It is a schematic diagram of the structure of the collecting trough, the chute, the drain trough and the moving ring of the present invention;

[0043] Figure 8 It is a schematic diagram of the three-dimensional structure of the stirring arm of the present invention;

[0044] Fig. 9 The three-dimensional structure of the stirring arm of the present invention is cut away Figure 1 ;

[0045] Fig.10 The three-dimensional structure of the stirring arm of the present invention is cut away Figure 2 ;

[0046] Fig.11 The three-dimensional structure of the stirring arm of the present invention is cut away Figure 3 ;

[0047] Fig.12 For the present invention Fig.11 Enlarged view of point B in the middle.

[0048] In the figure: 1, distillation kettle; 2, rotating shaft; 3, stirring arm; 4, condensation tank; 5, condensation water pipe; 6, impurity separator; 61, base; 62, distillation area; 63, impurity removal area; 64, collecting tank; 65, slide; 66, drain; 67, track column; 68, moving ring; 69, through hole; 610, enlarged hole; 611, spring; 612, triangular edge; 613, inclined wall; 614, bump; 615, lifting assembly; 6151, column cavity; 6152, plunger ; 6153, incision; 6154, inclined groove; 6155, tooth column; 6156, tension spring; 6157, liquid chamber; 6158, through port; 6159, spray hole; 61510, hydraulic stirring assembly; 615101, ball groove; 615102, ball head; 615103, nozzle; 615104, strip groove; 615105, slide; 615106, top spring; 615107, inner groove; 615108, rack; 615109, gear ring. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical staff in this field without creative work are within the scope of protection of the present invention.

[0050] See also Figures 1 to 12The present invention provides a technical solution: a preparation system of pyrithione hydrochloride, comprising a distillation kettle 1, a rotating shaft 2 is arranged inside the distillation kettle 1, and a stirring arm 3 is fixedly installed at the bottom end of the rotating shaft 2, a condenser 4 is fixedly arranged on one side of the distillation kettle 1, and the condenser 4 is connected with the distillation kettle 1 through a pipeline, and a condensation water pipe 5 is fixedly arranged in the condenser 4, the air inside the distillation kettle 1 is emptied to make the inside of the distillation kettle 1 a vacuum state, and then the crude pyrithione hydrochloride product is pumped into the distillation kettle 1, and then the distillation kettle 1 is heated to vaporize the crude pyrithione hydrochloride product under a low-pressure environment, and the vaporized crude pyrithione hydrochloride product is condensed and liquefied in the condenser 4 through the condensation water pipe 5, and then discharged for subsequent treatment.

[0051] An impurity separator 6 matched with the stirring arm 3 is provided in the distillation kettle 1. During the distillation process, the rotating shaft 2 drives the stirring arm 3 to rotate, so that the crude pyritinol hydrochloride product is heated evenly during the distillation process. At the same time, impurities generated during the distillation process will be deposited on the base 61 and then separated by the impurity separator 6.

[0052] The impurity separator 6 includes a base 61 fixedly mounted on the inner wall of the distillation kettle 1, and the base 61 divides the interior of the distillation kettle 1 into an upper distillation zone 62 and a lower impurity removal zone 63, an inverted triangular collecting groove 64 is provided on the top surface of the base 61, and impurities deposited on the base 61 fall into the collecting groove 64, and a chute 65 connected to the collecting groove 64 is provided inside the base 61, and a leakage groove 66 penetrating the base 61 is provided at the bottom of the chute 65.

[0053] The chute 65 and the collecting chute 64 are both designed as annular structures.

[0054] A track column 67 is fixedly installed inside the slide groove 65, and a moving ring 68 is movably arranged inside the slide groove 65. A through hole 69 is opened on the surface of the moving ring 68, and the moving ring 68 forms a sliding connection along the fixed column through the through hole 69.

[0055] An enlarged hole 610 is formed inside the through hole 69 , and a spring 611 is disposed on the surface of the fixed column and in the enlarged hole 610 . Both ends of the spring 611 are connected to the track column 67 and the moving ring 68 respectively, and the spring 611 pushes the moving ring 68 to move upward.

[0056] The top and bottom surfaces of the moving ring 68 are both configured as triangular edges 612 , the inner top wall and inner bottom wall of the sliding groove 65 are both configured as inclined walls 613 , and the inclined surface of the inclined wall 613 is adapted to the inclined surface of the triangular edge 612 .

[0057] The top of the movable ring 68 is fixedly connected with a protrusion 614 that cooperates with the stirring arm 3. During the rotation of the stirring arm 3, the protrusion 614 is intermittently contacted and squeezed to move downward with the movable ring 68. At this time, the upper triangular edge 612 is separated from the upper inclined wall 613, and the collecting groove 64 is connected with the slide groove 65. The lower triangular edge 612 is fitted with the lower inclined wall 613 to close the leakage groove 66, so that the impurities in the collecting groove 64 fall into the slide groove 65. After the stirring arm 3 leaves, the movable ring 68 moves up and resets. At this time, the slide groove 65 is disconnected from the collecting groove 64 and the distillation kettle 1, and is connected with the leakage groove 66 instead, so that the impurities in the slide groove 65 fall into the impurity removal area 63.

[0058] A lifting assembly 615 is provided on the stirring arm 3 and the base 61 .

[0059] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 12 As shown, the lifting assembly 615 includes a column cavity 6151 opened inside the stirring arm 3, and a plunger 6152 is slidably connected in the column cavity 6151, a cutout 6153 connected to the column cavity 6151 is opened on the lower side of the stirring arm 3, the lower side surface of the plunger 6152 passes through the cutout 6153, and a plurality of inclined grooves 6154 are opened on the lower side surface of the plunger 6152, and a tooth column 6155 matching the inclined groove 6154 is fixedly provided on the top surface of the base 61.

[0060] A tension spring 6156 is disposed in the column cavity 6151 , and the tension spring 6156 is connected to the plunger 6152 .

[0061] A liquid cavity 6157 communicating with the column cavity 6151 is provided inside the stirring arm 3, and a through hole 6158 communicating with the liquid cavity 6157 is provided on the side surface of the stirring arm 3, and a spray hole 6159 communicating with the liquid cavity 6157 is provided on the top surface of the stirring arm 3. The crude pyritinol hydrochloride product in the kettle enters the liquid cavity 6157 along the through hole 6158. At the same time, when the stirring arm 3 rotates over the tooth column 6155, the tooth column 6155 pushes the plunger 6152 along the inclined groove 6154 to slide into the liquid cavity 6157, and squeezes the crude pyritinol hydrochloride product in the cavity, causing it to spray upward from the spray hole 6159.

[0062] The stirring arm 3 is provided with a hydraulic stirring assembly 61510 which cooperates with the spray hole 6159 and the plunger 6152 .

[0063] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 12As shown, the hydraulic stirring assembly 61510 includes a ball groove 615101 opened on the top surface of the stirring arm 3, and the ball groove 615101 is connected to the spray hole 6159, a ball head 615102 is rotatably connected in the ball groove 615101, and a nozzle 615103 is inclinedly arranged on the outer surface of the ball head 615102, and the nozzle 615103 is connected to the spray hole 6159.

[0064] A strip groove 615104 is provided on the inner top wall of the liquid cavity 6157 , and a slide 615105 cooperating with the plunger 6152 is slidably connected in the strip groove 615104 , and a top spring 615106 cooperating with the slide 615105 is arranged in the strip groove 615104 .

[0065] An inner groove 615107 connected to the strip groove 615104 and the ball groove 615101 is provided inside the stirring arm 3, and a rack 615108 is slidably connected in the inner groove 615107, the rack 615108 is fixedly connected to the slide 615105, a gear ring 615109 is fixedly installed on the surface of the ball head 615102, and the gear ring 615109 and the rack 615108 are meshed with each other, and the liquid flow in the spray hole 6159 is sprayed out obliquely along the nozzle 615103 on the ball head 615102. In this process, the plunger 6152 synchronously pushes the rack 615108 to move along the slide 615105, and the rack 615108 is used to drive the ball head 615102 to rotate along the gear ring 615109.

[0066] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 12 As shown, the condensation water pipe 5 is configured as a spiral structure, so that the condensation water pipe 5 has a larger contact area, thereby improving the condensation efficiency.

[0067] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 12 As shown, there are a plurality of leakage grooves 66, and the plurality of leakage grooves 66 are distributed in a ring shape along the base 61. A discharge valve matching the leakage grooves 66 and the impurity removal area 63 is provided at the bottom of the distillation kettle 1. After the bottom of the chute 65 is opened, the impurities inside can enter the impurity removal area 63 along the leakage grooves 66 and be discharged through the discharge valve.

[0068] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 12As shown, the protrusion 614 is configured as a triangular block structure that matches the rotation trajectory of the stirring arm 3. When the stirring arm 3 squeezes the protrusion 614, it can smoothly apply pressure and release along the inclined surfaces on both sides thereof, thereby preventing the movable ring 68 from moving downward or upward quickly and causing the deposited impurities to disperse.

[0069] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 12 As shown, a frustum matching the collecting tank 64 is fixedly provided on the top surface of the base 61. When impurities generated during the distillation process are deposited, they can fall stably into the collecting tank 64 along the frustum, thereby preventing the impurities from being deposited on the flat base 61.

[0070] A preparation process of a preparation system of pyritinol hydrochloride comprises the following steps:

[0071] S1, the air inside the still 1 is evacuated to make the inside of the still 1 a vacuum state, and then the crude pyritinol hydrochloride product is pumped into the still 1, and then the still 1 is heated to vaporize the crude pyritinol hydrochloride product under a low pressure environment, and the vaporized crude pyritinol hydrochloride product is condensed and liquefied in a condensation tank 4 through a condensation water pipe 5, and then discharged for subsequent processing.

[0072] S2. During the distillation process, the rotating shaft 2 drives the stirring arm 3 to rotate, so that the crude pyritinol hydrochloride product is heated evenly during the distillation process, and the impurities generated during the distillation process are deposited on the base 61.

[0073] S3, the impurities deposited on the base 61 fall into the collecting groove 64, and the stirring arm 3 intermittently contacts the protrusion 614 during the rotation, and squeezes it and the movable ring 68 to move downward. At this time, the upper triangular edge 612 is separated from the upper inclined wall 613, and the collecting groove 64 is connected with the slide groove 65. The lower triangular edge 612 fits with the lower inclined wall 613 to close the leakage groove 66, so that the impurities in the collecting groove 64 fall into the slide groove 65. After the stirring arm 3 leaves, the movable ring 68 moves up and resets. At this time, the slide groove 65 is disconnected from the collecting groove 64 and the distillation kettle 1, and is connected with the leakage groove 66, so that the impurities in the slide groove 65 fall into the impurity removal area 63 to prevent impurities from interfering with normal distillation.

[0074] S4. During the distillation process, the crude pyritinol hydrochloride product in the kettle enters the liquid chamber 6157 along the through port 6158. At the same time, when the stirring arm 3 rotates over the tooth column 6155, the tooth column 6155 pushes the plunger 6152 along the inclined groove 6154 to slide into the liquid chamber 6157, and squeezes the crude pyritinol hydrochloride product in the chamber to be sprayed upward from the spray hole 6159. After leaving the tooth column 6155, the tension spring 6156 pulls the plunger 6152 back to allow the liquid to enter the liquid chamber 6157 again.

[0075] S5. The plunger 6152 is displaced to squeeze the liquid flow in the spray hole 6159 and spray it out obliquely along the nozzle 615103 on the ball head 615102. During this process, the plunger 6152 synchronously pushes the rack 615108 to displace along the slide 615105, and the rack 615108 is used to drive the ball head 615102 to rotate along the gear ring 615109, so that the liquid flow sprayed obliquely in the kettle synchronously performs a circular motion.

[0076] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit 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 to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A system for preparing pyritinol hydrochloride, comprising a distillation kettle (1), Features: A rotating shaft (2) is arranged inside the distillation kettle (1), and a stirring arm (3) is fixedly installed at the bottom end of the rotating shaft (2); a condensation tank (4) is fixedly arranged on one side of the distillation kettle (1), and the condensation tank (4) is connected to the distillation kettle (1) through a pipeline; a condensation water pipe (5) is fixedly arranged inside the condensation tank (4); The distillation kettle (1) is provided with an impurity separator (6) matched with the stirring arm (3); The impurity separator (6) comprises a base (61) fixedly mounted on the inner wall of the distillation kettle (1), and the base (61) divides the interior of the distillation kettle (1) into an upper distillation zone (62) and a lower impurity removal zone (63), an inverted triangle-shaped collecting groove (64) is provided on the top surface of the base (61), and a chute (65) connected to the collecting groove (64) is provided inside the base (61), and a drain groove (66) penetrating the base (61) is provided at the bottom of the chute (65); The chute (65) and the collecting chute (64) are both configured as annular structures; A track column (67) is fixedly installed inside the slide groove (65), and a moving ring (68) is movably arranged inside the slide groove (65). A through hole (69) is opened on the surface of the moving ring (68), and the moving ring (68) is slidably connected along the fixed column through the through hole (69); An enlarged hole (610) is provided inside the through hole (69), a spring (611) is provided on the surface of the fixed column and inside the enlarged hole (610), and two ends of the spring (611) are respectively connected to the track column (67) and the movable ring (68), and the spring (611) pushes the movable ring (68) to move upward; The top surface and the bottom surface of the movable ring (68) are both configured as triangular edges (612), the inner top wall and the inner bottom wall of the slide groove (65) are both configured as inclined walls (613), and the inclined surface of the inclined wall (613) is adapted to the inclined surface of the triangular edge (612); A protrusion (614) that matches the stirring arm (3) is fixedly connected to the top of the movable ring (68); A lifting component (615) is provided on the stirring arm (3) and the base (61).

2. A system for preparing pyritinol hydrochloride according to claim 1, Features: The lifting assembly (615) comprises a column cavity (6151) opened inside the stirring arm (3), and a plunger (6152) is slidably connected in the column cavity (6151); a cutout (6153) communicating with the column cavity (6151) is opened on the lower side of the stirring arm (3); the lower side surface of the plunger (6152) passes through the cutout (6153), and a plurality of inclined grooves (6154) are opened on the lower side surface of the plunger (6152); and a tooth column (6155) matching with the inclined groove (6154) is fixedly provided on the top surface of the base (61); A tension spring (6156) is disposed in the column cavity (6151), and the tension spring (6156) is connected to the plunger (6152); The stirring arm (3) has a liquid cavity (6157) in communication with the column cavity (6151) formed inside, and a through hole (6158) in communication with the liquid cavity (6157) formed on the side surface of the stirring arm (3), and a spray hole (6159) in communication with the liquid cavity (6157) formed on the top surface of the stirring arm (3); The stirring arm (3) is provided with a hydraulic stirring assembly (61510) that cooperates with the spray hole (6159) and the plunger (6152).

3. A system for preparing pyritinol hydrochloride according to claim 2, Features: The hydraulic stirring assembly (61510) comprises a ball groove (615101) provided on the top surface of the stirring arm (3), and the ball groove (615101) is connected to the spray hole (6159), a ball head (615102) is rotatably connected in the ball groove (615101), and a nozzle (615103) is obliquely provided on the outer surface of the ball head (615102), and the nozzle (615103) is connected to the spray hole (6159); The inner top wall of the liquid cavity (6157) is provided with a strip groove (615104), and a slide rack (615105) matching with the plunger (6152) is slidably connected in the strip groove (615104), and a top spring (615106) matching with the slide rack (615105) is arranged in the strip groove (615104); The stirring arm (3) is provided with an inner groove (615107) which is connected to the strip groove (615104) and the ball groove (615101), and a rack (615108) is slidably connected in the inner groove (615107), the rack (615108) is fixedly connected to the slide (615105), and a toothed ring (615109) is fixedly installed on the surface of the ball head (615102), and the toothed ring (615109) and the rack (615108) are meshed with each other.

4. A system for preparing pyritinol hydrochloride according to claim 1, Features: The condensation water pipe (5) is configured as a spiral structure.

5. A system for preparing pyritinol hydrochloride according to claim 1, Features: The leakage grooves (66) are provided in a plurality and are distributed in a ring shape along the base (61). The bottom of the distillation kettle (1) is provided with a discharge valve that cooperates with the leakage grooves (66) and the impurity removal area (63).

6. A system for preparing pyritinol hydrochloride according to claim 1, Features: The protrusion (614) is configured as a triangular block structure that matches the rotation trajectory of the stirring arm (3).

7. A system for preparing pyritinol hydrochloride according to claim 1, Features: A frustum matching the collection groove (64) is fixedly provided on the top surface of the base (61).

8. The preparation process of a preparation system of pyritinol hydrochloride according to claim 3, comprising the following steps: S1, evacuating the air inside the distillation kettle (1) to make the inside of the distillation kettle (1) a vacuum state, and then pumping the crude pyrithione hydrochloride product into the distillation kettle (1), and then heating the distillation kettle (1) to vaporize the crude pyrithione hydrochloride product under a low pressure environment, and the vaporized crude pyrithione hydrochloride product is condensed and liquefied in the condensation tank (4) through the condensation water pipe (5), and then discharged for subsequent treatment; S2. During the distillation process, the rotating shaft (2) drives the stirring arm (3) to rotate, so that the crude pyritinol hydrochloride product is heated evenly during the distillation process, and impurities generated during the distillation process are deposited on the base (61); S3, the impurities deposited on the base (61) fall into the collecting trough (64), and the stirring arm (3) intermittently contacts the protrusion (614) during the rotation process, and squeezes it and the moving ring (68) to move downward. At this time, the upper triangular edge (612) is separated from the upper inclined wall (613), the collecting trough (64) is connected with the chute (65), and the lower triangular edge (612) is in contact with the lower inclined wall (613), so that the leakage trough (66) is closed, so that the impurities in the collecting trough (64) fall into the chute (65). After the stirring arm (3) leaves, the moving ring (68) moves up and resets. At this time, the chute (65) is disconnected from the collecting trough (64) and the distillation kettle (1), and is connected to the leakage trough (66), so that the impurities in the chute (65) fall into the impurity removal area (63), thereby preventing the impurities from interfering with the normal distillation; S4. During the distillation process, the crude pyritinol hydrochloride product in the kettle enters the liquid chamber (6157) along the opening (6158). At the same time, when the stirring arm (3) rotates and passes over the tooth column (6155), the tooth column (6155) pushes the plunger (6152) along the inclined groove (6154) to slide into the liquid chamber (6157), and squeezes the crude pyritinol hydrochloride product in the chamber to be sprayed upward from the spray hole (6159). After leaving the tooth column (6155), the tension spring (6156) pulls the plunger (6152) back to its original position, so that the liquid chamber (6157) is filled with liquid again. S5. The plunger (6152) is displaced to squeeze the liquid flow in the spray hole (6159) and spray out obliquely along the nozzle (615103) on the ball head (615102). During this process, the plunger (6152) synchronously pushes the rack (615108) to displace along the slide (615105), and the rack (615108) is used to drive the ball head (615102) to rotate along the gear ring (615109), so that the liquid flow sprayed obliquely in the kettle synchronously performs a circular motion.

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