Production device for composition for relieving visual fatigue

Abstract

The invention relates to the technical field of eye health product production equipment, and specifically to a production device for a composition for relieving visual fatigue; the device comprises a mixing and stirring unit, a hot air production unit, a spray drying unit and a powder collecting and processing unit, wherein the spray drying unit comprises a spray drying tower, a hot air distributor and a spray head are arranged at the top of the spray drying tower, the hot air production unit is connected to the hot air distributor through a hot air pipe, the mixing and stirring unit is connected to the spray head through a liquid conveying pipe, the powder collecting and processing unit comprises a cyclone settling cylinder, and the lower end of the spray drying tower is connected to an air body conveying pipe; the production device disclosed in the invention uses high-temperature inert gas as a drying medium, so that not only can the hot air temperature be accurately controlled during the entire spray drying process, but also impurities are not present in the supplied hot air and sensitive components in the composition are not oxidized, thereby effectively ensuring the activity of the prepared composition powder particles and improving the product efficacy.

Description

Technical Field

[0001] The invention relates to the technical field of eye health product production equipment, in particular to a production device for a composition for relieving visual fatigue. Background Art

[0002] With the rapid development of the information age and the accelerated pace of life, especially as computers, televisions, game consoles, and other visual display devices have become increasingly integrated into people's work, study, and daily lives, visual fatigue has become a common eye disease, seriously affecting people's lives. Current treatments for visual fatigue include prism correction, surgery, physical therapies such as acupuncture, and some chemical medications that can relieve visual fatigue.

[0003] For example, the Zhenshiming brand Lutein-Bilberry Soft Capsules, whose main ingredients include vitamin C, sodium hyaluronate, lutein, vitamin A, carotene, probiotics, proanthocyanidin extracts, and brass-rich traditional Chinese medicine extracts, require the production process of these Lutein-Bilberry Soft Capsules to mix these ingredients in proportion to form a solution, which is then spray-dried to produce a capsule powder. However, due to design limitations of existing spray dryers and the fact that the composition for alleviating visual fatigue contains multiple traditional Chinese medicine extracts that are sensitive to temperature and air, the spray-dried powder is often ineffective. The utility model patent application number CN2020229594070 discloses a spray dryer for drying Chinese herbal medicine extracts, comprising a base, a first fixing frame, a second fixing frame, a hot air blower, and an air filter fixedly connected to the upper surface of the base, an evaporation atomization device fixedly connected to the inner side of the first fixing frame, a drying tank fixedly connected to the inner side of the second fixing frame, and an upper cover fixedly connected to the upper surface of the drying tank. The spray dryer disclosed in the utility model can rotate and descend the atomized liquid in the drying tank through the side air vents distributed in a spiral pattern on the inner wall of the inner tank, prolonging its suspension time and improving the drying effect. The hot air can also be removed from the dust by the air filter with a filter screen to avoid contamination of the powder. However, the spray dryer heats the air with a hot air blower and then sends the hot air into the tank, causing some easily oxidized components to become ineffective. In addition, a small amount of the atomized liquid will adhere to the inner wall of the drying chamber. The actual heating process of this part of the material in the drying chamber causes its activity to decrease, making it impossible to fully utilize it, resulting in a waste of raw materials. Based on this, the present application proposes a production device for a composition for relieving visual fatigue that can effectively solve the above technical problems. Summary of the Invention

[0004] The object of the present invention is to provide a production device for a composition for relieving visual fatigue, so as to ensure that the composition for relieving visual fatigue can always maintain high activity, reduce pollution and reduce waste of raw materials during the process of centrifugal drying to prepare powder material.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A production device for a composition for relieving visual fatigue, comprising a mixing and stirring unit, a hot air production unit, a spray drying unit, and a powder collection and processing unit. The spray drying unit comprises a spray drying tower and a tower inner wall cleaning mechanism. A hot air distributor and a spray head are provided at the top of the spray drying tower. The hot air production unit is connected to the hot air distributor via a hot air duct, and the mixing and stirring unit is connected to the spray head via a liquid delivery pipe.

[0007] The powder collecting and processing unit includes a cyclone settling cylinder, the lower end of the spray drying tower is connected to an air conveying pipe, and the end of the air conveying pipe is connected to the upper end of the cyclone settling cylinder, a vertical pipe extending into the upper surface of the cyclone settling cylinder is provided on the central axis of the cyclone settling cylinder, and the top of the vertical pipe is connected to the negative pressure fan through a pipeline, the lower end of the cyclone settling cylinder is connected to a screening and crushing box, an upper grinding disc and a lower sieve disc are provided in the screening and crushing box, the upper grinding disc and the lower sieve disc are concentrically arranged up and down, and a first drive assembly and a second drive assembly are provided on the screening and crushing box to realize the reverse rotation of the upper grinding disc and the lower sieve disc, the inner ring of the lower sieve disc is evenly provided with a plurality of sieve holes, and the outer ring is recessed downward to form a lower grinding ring, a through hole for extending into the discharge pipe at the lower end of the cyclone settling cylinder is provided at the center of the circle of the upper grinding disc, and the outer ring of the upper grinding disc protrudes downward to form an upper grinding ring corresponding to the lower grinding ring, and a material receiving bucket is provided directly below the screening and crushing box.

[0008] As a further configuration of the above scheme, the tower inner wall cleaning mechanism includes a first gear ring arranged at the upper end of the inner cavity of the spray drying tower, the outer cylindrical surface of the first gear ring is provided with a positioning ring matching the annular groove on the inner wall of the spray drying tower, and the lower surface of the positioning ring is evenly embedded with a plurality of balls, the lower surface of the first gear ring is connected to a plurality of cleaning rods, and the cleaning rods are provided with bristles that contact the inner wall of the spray drying tower, the upper surface of the spray drying tower is provided with a first motor, and the motor shaft of the first motor is connected to a first gear that meshes with the first gear ring.

[0009] As a specific setting of the above scheme, the mixing and stirring unit includes a stirring tank and a stirring motor. The stirring motor is arranged at the center of the upper surface of the stirring tank. The output shaft of the stirring motor is connected to a stirring frame located in the inner cavity of the stirring tank. The two ends of the liquid delivery pipe are respectively connected to the lower end of the stirring tank and the spray head. A delivery pump is also provided on the liquid delivery pipe.

[0010] As a specific setting of the above scheme, the hot air production unit includes a compressed gas tank, a thermal oil circulation heating tank and a heat exchange box. The top of the compressed gas tank is connected to a compressed air pipe, and the end of the compressed air pipe is connected to the side of the heat exchange box. The thermal oil circulation heating tank is respectively provided with an oil inlet pipe and an oil outlet pipe, and an oil pump is provided on the oil inlet pipe. The oil inlet pipe and the oil outlet pipe are respectively connected to the two ends of the heat exchanger inside the heat exchange box. The hot air pipe is connected to the other side of the heat exchange box, and the end of the hot air pipe is connected to the hot air distributor.

[0011] As a specific setting of the above scheme, the heat exchanger includes a plurality of serpentine tubes arranged at intervals in the upper and lower parts, and a plurality of vertically arranged heat exchange fins are arranged at intervals in the front and rear parts of the plurality of serpentine tubes. The oil inlet pipe and the oil outlet pipe are respectively connected to the two ends of the plurality of serpentine tubes.

[0012] As a further arrangement of the above scheme, the compressed air pipe is connected to the lower end of the side of the heat exchange box, the hot air duct is connected to the upper end of the other side of the heat exchange box, and a uniformly distributed partition is provided in the heat exchange box between the heat exchanger and the compressed air pipe, and a large number of air holes are opened on the uniformly distributed partition.

[0013] As a specific setting of the above scheme, the hot air production unit also includes a frame, and the compressed gas tank, thermal oil circulation heating tank and heat exchange box are fixed on the frame in sequence from bottom to top, and a control cabinet is also provided on the frame.

[0014] As a specific setting of the above scheme, the first driving assembly includes a second gear ring welded to the upper surface of the upper grinding disc, the outer cylindrical surface of the upper grinding disc is provided with a rotating ring, the inner wall of the screening and crushing box is provided with a track ring matching the rotating ring, the screening and crushing box is provided with a second motor, and the output shaft of the second motor is connected to a second gear meshing with the second gear ring.

[0015] As a specific setting of the above scheme, the second drive assembly includes a fixed plate located directly below the center of the lower sieve plate, and the fixed plate is connected to the inner wall of the screening and crushing box through multiple connecting rods on the circumferential surface. A third motor is provided on the lower surface of the fixed plate, and the output shaft of the third motor is connected to the lower sieve plate.

[0016] As a further configuration of the above solution, a powder filter is further provided in the vertical pipe, and a vibration motor is provided on the powder filter.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The production device of the composition for relieving visual fatigue disclosed in the present invention adopts a heat exchange method between high-temperature heat-conducting oil and inert gas in a compressed gas tank to form the hot air required for spray drying, and then the generated inert gas hot air is spirally moved in the spray drying tower. At the same time, the mixed liquid in the stirring tank is transported to the spray head through a delivery pump, and then the spray head atomizes and sprays the mixed liquid. During the spraying process, the inert gas hot air is dried, so that the powder particles of the composition can be quickly formed. During the entire spray drying process, not only can the hot air temperature be accurately controlled, but the hot air supplied does not contain impurities and will not cause oxidation to the sensitive components in the composition, thereby effectively ensuring the activity of the prepared powder particles of the composition and improving the efficacy of the product.

[0019] 2. The powder collection and processing unit in the production device of the present invention uses a cyclone sedimentation cylinder as the sedimentation body, and uses the principle of a cyclone dust collector to allow the spray-dried composition powder particles to settle inside the cyclone sedimentation cylinder, and the cyclone sedimentation cylinder after sedimentation will fall to the center of the lower sieve plate, and then move around under the centrifugal action of the lower sieve plate. During the movement, the size is screened through the sieve holes, and at the same time, the large-particle size composition powder particles that have not been screened will move to the gap between the upper grinding plate and the outer ring of the lower sieve plate, and then be ground by the reverse synchronous movement between the upper grinding plate and the lower sieve plate, so that the composition powder particles that meet the size after grinding fall together for collection, which effectively ensures the size uniformity of the ingredients when the subsequent composition powder particles are used to prepare capsules, thereby improving the medicinal effect.

[0020] 3. The present invention also provides a tower inner wall cleaning mechanism in the spray drying tower. During the spray drying process, the first motor is used as a power input unit to rotate the first gear ring about the central axis in the spray drying tower. Then, during its rotation, the bristles on the cleaning rod are used to sweep away the sticky coating material attached to the inner wall of the tower body during the spray drying process, thereby preventing the sticky coating material from being affected by high-temperature hot air for a long time and deteriorating. This not only effectively solves the problem of poor spray drying effect caused by wall adhesion, but also prevents the deteriorated components from being mixed into the composition, thereby improving the medicinal effect of the composition and reducing the waste of raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a schematic diagram of the first three-dimensional structure of the production device of the present invention;

[0023] Figure 2This is a second three-dimensional structural schematic diagram of the production device of the present invention;

[0024] Figure 3 is a three-dimensional cross-sectional view of the spray drying tower of the present invention;

[0025] Figure 4 Schematic diagram of the three-dimensional structure of the tower inner wall cleaning mechanism of the present invention;

[0026] Figure 5 This is a schematic diagram of the internal planar structure of the powder collection and processing unit of the present invention;

[0027] Figure 6 Schematic diagram of the first internal three-dimensional structure of the screening and crushing box of the present invention;

[0028] Figure 7 Schematic diagram of the second internal three-dimensional structure of the screening and crushing box of the present invention;

[0029] Figure 8 This is a schematic diagram of the three-dimensional structure of the upper grinding plate, lower sieve plate, etc. in the present invention;

[0030] Figure 9 Schematic diagram of the first internal three-dimensional structure of the heat exchange box in the present invention;

[0031] Figure 10 This is a schematic diagram of the second internal three-dimensional structure of the heat exchange box in the present invention.

[0032] In the picture:

[0033] 100-mixing and stirring unit, 101-liquid delivery pipe, 102-stirring motor, 103-stirring tank, 104-delivery pump;

[0034] 200-hot air production unit, 201-compressed gas tank, 202-thermal oil circulation heating tank, 203-heat exchange box, 204-compressed gas pipe, 205-oil inlet pipe, 206-oil outlet pipe, 207-oil pump, 208-heat exchanger, 2081-serpentine pipe, 2082-heat exchange fins, 209-uniformly distributed partition, 210-air hole, 211-frame, 212-hot air duct;

[0035] 300-spray drying unit, 301-spray drying tower, 3011-first gear ring, 3012-positioning ring, 3013-ball, 3014-cleaning rod, 3015-brush, 3016-first motor, 3017-first gear, 302-tower inner wall cleaning mechanism, 303-hot air distributor, 304-spray head, 305-air delivery pipe;

[0036] 400 - powder collection and processing unit, 401 - cyclone settling cylinder, 402 - vertical pipe, 403 - screening and crushing box, 404 - upper grinding disc, 4041 - through hole, 4042 - upper grinding ring, 405 - lower sieve disc, 4051 - sieve hole, 4052 - lower grinding ring, 406 - discharge pipe, 407 - second gear ring, 408 - rotating ring, 409 - track ring, 410 - second motor, 411 - second gear, 412 - fixed disc, 413 - connecting rod, 414 - third motor, 415 - powder filter;

[0037] 500- receiving barrel, 600- control cabinet. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] Example 1

[0040] Example 1 discloses a production device for a composition for relieving visual fatigue, Figure 1 and attached Figure 2 The production device includes a mixing and stirring unit 100, a hot air production unit 200, a spray drying unit 300 and a powder collection and processing unit 400. The mixing and stirring unit 100 includes a stirring tank 103 and a stirring motor 102. The stirring motor 102 is arranged at the center of the upper surface of the stirring tank 103, and the output shaft of the stirring motor 102 is connected to a stirring frame located in the inner cavity of the stirring tank 103. By putting the raw materials of the components of the eye fatigue relief composition into the stirring tank 103, they can be stirred evenly under the action of the stirring motor 102 and the stirring frame to obtain a mixed liquid.

[0041] Reference Attachment Figure 3 The spray drying unit 300 includes a spray drying tower 301, with a hot air distributor 303 and a spray head 304 disposed at the top. The spray head 304 is connected to a liquid delivery pipe 101, which is further provided with a delivery pump 104. The other end of the liquid delivery pipe 101 is connected to the lower end of a mixing tank 103. The delivery pump 104 delivers a quantitative amount of the mixed liquid in the mixing tank 103 to the spray head 304, where the mixed liquid is then atomized and sprayed out.

[0042] The hot air production unit 200 is connected to the hot air distributor 303 through the hot air duct 212. For details of the hot air production unit 200, please refer to the attached Figure 1, Attachment Figure 9 and attached Figure 10 The system includes a compressed gas tank 201, a thermal oil circulation heating tank 202, and a heat exchange box 203. It also includes a frame 211, on which the compressed gas tank 201, the thermal oil circulation heating tank 202, and the heat exchange box 203 are fixed in order from bottom to top. A control cabinet 600 is also installed on the frame 211. A compressed gas pipe 204 is connected to the top of the compressed gas tank 201. The compressed gas pipe 204 is equipped with a control valve for adjusting the gas flow rate. The end of the compressed gas pipe 204 is then connected to the side of the heat exchange box 203. The compressed gas tank 201 stores nitrogen or carbon dioxide gas, which is quantitatively transported from the compressed gas tank 201 to the heat exchange box 203 through the compressed gas pipe 204 for heating. An oil inlet pipe 205 and an oil outlet pipe 206 are respectively arranged on the thermal oil circulation heating tank 202, and an oil pump 207 is provided on the oil inlet pipe 205. Then the oil inlet pipe 205 and the oil outlet pipe 206 are respectively connected to the two ends of the heat exchanger 208 inside the heat exchange box 203. At the same time, the hot air pipe 212 is connected to the other side of the heat exchange box 203, and then the end of the hot air pipe 212 is connected to the hot air distributor 303.

[0043] During the specific design process, the heat exchanger 208 includes multiple serpentine tubes 2081 spaced apart vertically. Multiple vertically arranged heat exchange fins 2082 are spaced apart front and back on the multiple serpentine tubes 2081. The oil inlet pipe 205 and the oil outlet pipe 206 are connected to the ends of the multiple serpentine tubes 2081. Simultaneously, the compressed air pipe 204 is connected to the lower end of the side of the heat exchange box 203, and the hot air duct 212 is connected to the upper end of the other side of the heat exchange box 203. A uniformly distributed partition 209 with a large number of air holes 210 is installed in the heat exchange box 203 between the heat exchanger 208 and the compressed air pipe 204. Through the above arrangement, the nitrogen or carbon dioxide gas in the compressed gas tank 201 is fed into the bottom of the heat exchange box 203, passes through the air holes 210 on the uniformly distributed partition 209, and then flows through the heat exchange fins 2082 and the serpentine tube 2081, so that after sufficient heat exchange, the heated nitrogen or carbon dioxide gas is sent to the hot air uniform distributor 303 through the hot air pipe 212 for spray drying.

[0044] Reference Attachment Figure 5 , Attachment Figure 6 , Attachment Figure 7 and attached Figure 8 The powder collection and processing unit 400 includes a cyclone settling drum 401. An air conveying pipe 305 is connected to the lower end of the spray drying tower 301, and the end of the air conveying pipe 305 is connected to the upper end of the cyclone settling drum 401, so that the powder and hot air dried in the spray drying tower 301 enter the interior of the cyclone settling drum 401 along the air conveying pipe 305 for sedimentation.

[0045] A vertical pipe 402 is provided on the central axis of the cyclone settling drum 401, extending into the upper surface of the drum. The top end of the vertical pipe 402 is connected to a negative pressure blower via a pipe. A screening and crushing box 403 is connected to the lower end of the cyclone settling drum 401. The screening and crushing box 403 contains an upper grinding disc 404 and a lower sieve disc 405, which are concentrically arranged. The screening and crushing box 403 also includes a first drive assembly and a second drive assembly for achieving counter-rotation of the upper grinding disc 404 and the lower sieve disc 405. Specifically, the first drive assembly includes a second gear ring 407 welded to the upper surface of the upper grinding disc 404. A rotating ring 408 is provided on the outer circumference of the upper grinding disc 404. Furthermore, a track ring 409 is provided on the inner wall of the screening and crushing box 403 to match the rotating ring 408. A second motor 410 is provided on the screening and crushing box 403. The output shaft of the second motor 410 is connected to a second gear 411 that meshes with a second gear ring 407. The power input from the second motor 410, combined with the meshing transmission between the second gear 411 and the second gear ring 407, enables the upper grinding disc 404 to rotate. A second drive assembly includes a fixed disc 412 located directly below the center of the lower sieve disc 405. The fixed disc 412 is connected to the inner wall of the screening and crushing box 403 via a plurality of connecting rods 413 on its circumferential surface. A third motor 414 is provided on the lower surface of the fixed disc 412, and the output shaft of the third motor 414 is connected to the lower sieve disc 405. Synchronous counter-rotation between the upper grinding disc 404 and the lower sieve disc 405 can be achieved by simply controlling the second motor 410 and the third motor 414 to rotate in the same direction.

[0046] The inner ring of the lower sieve plate 405 is evenly distributed with multiple sieve holes 4051, while its outer ring is recessed downward to form a lower grinding ring 4052. A through hole 4041 is provided at the center of the upper grinding plate 404 for receiving the discharge pipe 406 at the lower end of the cyclone settling cylinder 401. The outer ring of the upper grinding plate 404 protrudes downward to form an upper grinding ring 4042 corresponding to the lower grinding ring 4052. The powder particles of the composition that have been settled in the cyclone settling drum 401 fall along the discharge pipe 406 to the center of the lower sieve plate 405, and then under the action of the centrifugal force of the lower sieve plate 405, the powder particles of the composition move around. During the movement, the powder particles that meet the size will fall directly through the sieve hole 4051, while the powder particles with larger particle size will be thrown to the outer ring of the lower sieve plate 405 under the action of centrifugal force. At this time, they can be ground and crushed by the grinding action of the lower grinding ring 4052 and the upper grinding ring 4042, and finally thrown off the lower sieve plate 405 due to the centrifugal force, so that all the powder particles of the composition fall together. At this time, a receiving bucket 500 is provided directly below the screening and crushing box 403, and the final powder particles of the composition are collected through the receiving bucket 500.

[0047] Example 2

[0048] Example 2 discloses a production device for a composition for relieving visual fatigue, Figure 1 and attached Figure 2 The production device includes a mixing and stirring unit 100, a hot air production unit 200, a spray drying unit 300 and a powder collection and processing unit 400. The mixing and stirring unit 100 includes a stirring tank 103 and a stirring motor 102. The stirring motor 102 is arranged at the center of the upper surface of the stirring tank 103, and the output shaft of the stirring motor 102 is connected to a stirring frame located in the inner cavity of the stirring tank 103. By putting the raw materials of the components of the eye fatigue relief composition into the stirring tank 103, they can be stirred evenly under the action of the stirring motor 102 and the stirring frame to obtain a mixed liquid.

[0049] Reference Attachment Figure 3 The spray drying unit 300 includes a spray drying tower 301 and a tower inner wall cleaning mechanism 302. A hot air distributor 303 and a spray head 304 are located at the top of the spray drying tower 301. The spray head 304 is connected to a liquid delivery pipe 101, which is also equipped with a delivery pump 104. The other end of the liquid delivery pipe 101 is connected to the lower end of a mixing tank 103. The delivery pump 104 delivers a quantitative amount of the mixed liquid in the mixing tank 103 to the spray head 304, where it is then atomized and sprayed out.

[0050] Reference Attachment Figure 3 and attached Figure 4 The tower inner wall cleaning mechanism 302 includes a first gear ring 3011 arranged at the upper end of the spray drying tower 301 inner cavity. The outer cylindrical surface of the first gear ring 3011 is provided with a positioning ring 3012 that matches the annular groove on the inner wall of the spray drying tower 301, and the lower surface of the positioning ring 3012 is evenly embedded with a plurality of balls 3013. The lower surface of the first gear ring 3011 is connected to a plurality of cleaning rods 3014, the cleaning rods 3014 shown in the figure are provided with two, and the cleaning rods 3014 are provided with bristles 3015 that contact the inner wall of the spray drying tower 301. In addition, a first motor 3016 is also provided on the upper surface of the spray drying tower 301. The motor shaft of the first motor 3016 is connected to a first gear 3017 that meshes with the first gear ring 3011. The tower inner wall cleaning mechanism 302 in this embodiment 2 uses the first motor 3016 as a power transmission unit, and then under the meshing transmission of the first gear 3017 and the first gear ring 3011, the first gear ring 3011 rotates about the central axis of the spray drying tower 301. During its rotation, the bristles 3015 on the cleaning rod 3014 sweep away the sticky coating material attached to the inner wall of the tower during the spray drying process, preventing it from being affected by high-temperature hot air for a long time and deteriorating.

[0051] The hot air production unit 200 is connected to the hot air distributor 303 through the hot air duct 212. For details of the hot air production unit 200, please refer to the attached Figure 1 , Attachment Figure 9 and attached Figure 10 The system includes a compressed gas tank 201, a thermal oil circulation heating tank 202, and a heat exchange box 203. It also includes a frame 211, on which the compressed gas tank 201, the thermal oil circulation heating tank 202, and the heat exchange box 203 are fixed in order from bottom to top. A control cabinet 600 is also installed on the frame 211. A compressed gas pipe 204 is connected to the top of the compressed gas tank 201. The compressed gas pipe 204 is equipped with a control valve for adjusting the gas flow rate. The end of the compressed gas pipe 204 is then connected to the side of the heat exchange box 203. The compressed gas tank 201 stores nitrogen or carbon dioxide gas, which is quantitatively transported from the compressed gas tank 201 to the heat exchange box 203 through the compressed gas pipe 204 for heating. An oil inlet pipe 205 and an oil outlet pipe 206 are respectively arranged on the thermal oil circulation heating tank 202, and an oil pump 207 is provided on the oil inlet pipe 205. Then the oil inlet pipe 205 and the oil outlet pipe 206 are respectively connected to the two ends of the heat exchanger 208 inside the heat exchange box 203. At the same time, the hot air pipe 212 is connected to the other side of the heat exchange box 203, and then the end of the hot air pipe 212 is connected to the hot air distributor 303.

[0052] During the specific design process, the heat exchanger 208 includes multiple serpentine tubes 2081 spaced apart vertically. Multiple vertically arranged heat exchange fins 2082 are spaced apart front and back on the multiple serpentine tubes 2081. The oil inlet pipe 205 and the oil outlet pipe 206 are connected to the ends of the multiple serpentine tubes 2081. Simultaneously, the compressed air pipe 204 is connected to the lower end of the side of the heat exchange box 203, and the hot air duct 212 is connected to the upper end of the other side of the heat exchange box 203. A uniformly distributed partition 209 with a large number of air holes 210 is installed in the heat exchange box 203 between the heat exchanger 208 and the compressed air pipe 204. Through the above arrangement, the nitrogen or carbon dioxide gas in the compressed gas tank 201 is fed into the bottom of the heat exchange box 203, passes through the air holes 210 on the uniformly distributed partition 209, and then flows through the heat exchange fins 2082 and the serpentine tube 2081, so that after sufficient heat exchange, the heated nitrogen or carbon dioxide gas is sent to the hot air distributor 303 through the hot air pipe 212.

[0053] Reference Attachment Figure 5 , Attachment Figure 6 , Attachment Figure 7 and attached Figure 8The powder collection and processing unit 400 includes a cyclone settling drum 401. An air conveying pipe 305 is connected to the lower end of the spray drying tower 301, and the end of the air conveying pipe 305 is connected to the upper end of the cyclone settling drum 401, so that the powder and hot air dried in the spray drying tower 301 enter the interior of the cyclone settling drum 401 along the air conveying pipe 305 for sedimentation.

[0054] A vertical pipe 402 is provided on the central axis of the cyclone settling drum 401, extending into the upper surface of the drum. The top end of the vertical pipe 402 is connected to a negative pressure blower via a pipe. A screening and crushing box 403 is connected to the lower end of the cyclone settling drum 401. The screening and crushing box 403 contains an upper grinding disc 404 and a lower sieve disc 405, which are concentrically arranged. The screening and crushing box 403 also includes a first drive assembly and a second drive assembly for achieving counter-rotation of the upper grinding disc 404 and the lower sieve disc 405. Specifically, the first drive assembly includes a second gear ring 407 welded to the upper surface of the upper grinding disc 404. A rotating ring 408 is provided on the outer circumference of the upper grinding disc 404. Furthermore, a track ring 409 is provided on the inner wall of the screening and crushing box 403 to match the rotating ring 408. A second motor 410 is provided on the screening and crushing box 403. The output shaft of the second motor 410 is connected to a second gear 411 that meshes with a second gear ring 407. The power input from the second motor 410, combined with the meshing transmission between the second gear 411 and the second gear ring 407, enables the upper grinding disc 404 to rotate. A second drive assembly includes a fixed disc 412 located directly below the center of the lower sieve disc 405. The fixed disc 412 is connected to the inner wall of the screening and crushing box 403 via a plurality of connecting rods 413 on its circumferential surface. A third motor 414 is provided on the lower surface of the fixed disc 412, and the output shaft of the third motor 414 is connected to the lower sieve disc 405. Synchronous counter-rotation between the upper grinding disc 404 and the lower sieve disc 405 can be achieved by simply controlling the second motor 410 and the third motor 414 to rotate in the same direction.

[0055] The inner ring of the lower sieve plate 405 is evenly distributed with multiple sieve holes 4051, while its outer ring is recessed downward to form a lower grinding ring 4052. A through hole 4041 is provided at the center of the upper grinding plate 404 for receiving the discharge pipe 406 at the lower end of the cyclone settling cylinder 401. The outer ring of the upper grinding plate 404 protrudes downward to form an upper grinding ring 4042 corresponding to the lower grinding ring 4052. The powder particles of the composition that have been settled in the cyclone settling drum 401 fall along the discharge pipe 406 to the center of the lower sieve plate 405, and then under the action of the centrifugal force of the lower sieve plate 405, the powder particles of the composition move around. During the movement, the powder particles that meet the size will fall directly through the sieve hole 4051, while the powder particles with larger particle size will be thrown to the outer ring of the lower sieve plate 405 under the action of centrifugal force. At this time, they can be ground and crushed by the grinding action of the lower grinding ring 4052 and the upper grinding ring 4042, and finally thrown off the lower sieve plate 405 due to the centrifugal force, so that all the powder particles of the composition fall together. At this time, a receiving bucket 500 is provided directly below the screening and crushing box 403, and the final powder particles of the composition are collected through the receiving bucket 500.

[0056] Finally, in this embodiment 2, a powder filter 415 is further provided in the vertical pipe 402, and a vibration motor is installed on the powder filter 415. The powder filter 415 prevents a small amount of composition powder particles from being drawn out along the vertical pipe 402 by the negative pressure blower during the cyclonic settling process, thereby causing waste. Simultaneously, the vibration motor is intermittently activated to shake off the composition powder particles on the powder filter 415, preventing them from clogging the vertical pipe 402.

[0057] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A production device for a composition for relieving visual fatigue, characterized in that: The invention comprises a mixing and stirring unit (100), a hot air production unit (200), a spray drying unit (300) and a powder collecting and processing unit (400), wherein the spray drying unit (300) comprises a spray drying tower (301) and a tower inner wall cleaning mechanism (302), a hot air distributor (303) and a spray head (304) are provided at the top of the spray drying tower (301), the hot air production unit (200) is connected to the hot air distributor (303) via a hot air pipe (212), and the mixing and stirring unit (100) is connected to the spray head (304) via a liquid delivery pipe (101); The powder collecting and processing unit (400) includes a cyclone settling drum (401), the lower end of the spray drying tower (301) is connected to an air conveying pipe (305), and the end of the air conveying pipe (305) is connected to the upper end of the cyclone settling drum (401), a vertical pipe (402) extending into the upper surface of the cyclone settling drum (401) is provided on the central axis of the cyclone settling drum (401), and the top of the vertical pipe (402) is connected to a negative pressure fan through a pipeline, and the lower end of the cyclone settling drum (401) is connected to a screening crushing box (403), and the screening crushing box (403) is provided with an upper grinding disc (404) and a lower sieve disc (405), and the upper grinding disc (404) and the lower sieve disc (405) are provided. 405) are arranged concentrically above and below, and the screening and crushing box (403) is provided with a first drive component and a second drive component for realizing the reverse rotation of the upper grinding disc (404) and the lower sieve disc (405), the inner ring of the lower sieve disc (405) is evenly provided with a plurality of sieve holes (4051), and the outer ring is recessed downward to form a lower grinding ring (4052), and a through hole (4041) for extending into the discharge pipe (406) at the lower end of the cyclone settling cylinder (401) is provided at the center of the circle of the upper grinding disc (404), and the outer ring of the upper grinding disc (404) is protruded downward to form an upper grinding ring (4042) corresponding to the lower grinding ring (4052), and a material receiving bucket (500) is provided directly below the screening and crushing box (403).

2. The production device of a composition for relieving visual fatigue according to claim 1, characterized in that: The tower inner wall cleaning mechanism (302) comprises a first gear ring (3011) arranged at the upper end of the inner cavity of the spray drying tower (301); the outer circumferential surface of the first gear ring (3011) is provided with a positioning ring (3012) matching the annular groove on the inner wall of the spray drying tower (301); and the lower surface of the positioning ring (3012) is evenly embedded with a plurality of balls (3013); the lower surface of the first gear ring (3011) is connected to a plurality of cleaning rods (3014), and the cleaning rods (3014) are provided with bristles (3015) in contact with the inner wall of the spray drying tower (301); the upper surface of the spray drying tower (301) is provided with a first motor (3016); and the motor shaft of the first motor (3016) is connected to a first gear (3017) meshing with the first gear ring (3011).

3. The production device of a composition for relieving visual fatigue according to claim 1, characterized in that: The mixing and stirring unit (100) comprises a stirring tank (103) and a stirring motor (102), wherein the stirring motor (102) is arranged at the center of the upper surface of the stirring tank (103), and the output shaft of the stirring motor (102) is connected to a stirring frame located in the inner cavity of the stirring tank (103). The two ends of the liquid delivery pipe (101) are respectively connected to the lower end of the stirring tank (103) and the spray head (304), and the liquid delivery pipe (101) is also provided with a delivery pump (104).

4. The production device of a composition for relieving visual fatigue according to claim 1, characterized in that: The hot air production unit (200) includes a compressed air tank (201), a heat transfer oil circulation heating tank (202) and a heat exchange box (203). The top of the compressed air tank (201) is connected to a compressed air pipe (204), and the end of the compressed air pipe (204) is connected to the side of the heat exchange box (203). The heat transfer oil circulation heating tank (202) is provided with an oil inlet pipe (205) and an oil outlet pipe (206), and an oil pump (207) is provided on the oil inlet pipe (205). The oil inlet pipe (205) and the oil outlet pipe (206) are respectively connected to the two ends of a heat exchanger (208) inside the heat exchange box (203). The hot air pipe (212) is connected to the other side of the heat exchange box (203), and the end of the hot air pipe (212) is connected to a hot air distributor (303).

5. The production device of a composition for relieving visual fatigue according to claim 4, characterized in that: The heat exchanger (208) includes a plurality of serpentine tubes (2081) arranged at intervals in the upper and lower parts, and a plurality of vertically arranged heat exchange fins (2082) are arranged at intervals in the front and rear parts of the plurality of serpentine tubes (2081). The oil inlet pipe (205) and the oil outlet pipe (206) are respectively connected to the two ends of the plurality of serpentine tubes (2081).

6. The production device of the composition for relieving visual fatigue according to claim 5, characterized in that: The compressed air pipe (204) is connected to the lower end of the side of the heat exchange box (203), and the hot air duct (212) is connected to the upper end of the other side of the heat exchange box (203). A uniform partition (209) is provided in the heat exchange box (203) between the heat exchanger (208) and the compressed air pipe (204), and a large number of air holes (210) are opened on the uniform partition (209).

7. The production device of the composition for relieving visual fatigue according to claim 6, characterized in that: The hot air production unit (200) further comprises a frame (211), wherein the compressed gas tank (201), the heat transfer oil circulation heating tank (202) and the heat exchange box (203) are fixed on the frame (211) in sequence from bottom to top, and a control cabinet (600) is further provided on the frame (211).

8. The production device of the composition for relieving visual fatigue according to claim 1, characterized in that: The first driving assembly comprises a second gear ring (407) welded to the upper surface of the upper grinding disc (404); a rotating ring (408) is provided on the outer circumference of the upper grinding disc (404); a track ring (409) matching the rotating ring (408) is provided on the inner wall of the screening and crushing box (403); a second motor (410) is provided on the screening and crushing box (403); and a second gear (411) meshing with the second gear ring (407) is connected to the output shaft of the second motor (410).

9. The production device of the composition for relieving visual fatigue according to claim 8, characterized in that: The second driving assembly includes a fixed plate (412) located directly below the center of the lower sieve plate (405); the fixed plate (412) is connected to the inner wall of the screening and crushing box (403) through a plurality of connecting rods (413) on the circumferential surface; a third motor (414) is provided on the lower surface of the fixed plate (412); and the output shaft of the third motor (414) is connected to the lower sieve plate (405).

10. The production device of the composition for relieving visual fatigue according to claim 1, characterized in that: A powder filter screen (415) is also provided in the vertical pipe (402), and a vibration motor is provided on the powder filter screen (415).

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