Equipment and method for drying p-hydroxyacetophenone

Abstract

The invention is suitable for the technical field of drying equipment, and provides p-hydroxyacetophenone drying equipment and method.The p-hydroxyacetophenone drying equipment comprises an equipment box, an equipment frame, a material disc, a heating piece, a reciprocating transverse moving mechanism, a control system, a power system, an alternate switching mechanism, a scraper blade and a shifting block; the control system, the power supply system, the alternate switching mechanism and the reciprocating transverse moving mechanism are matched with one another, p-hydroxyacetophenone on the charging tray can be scraped to a thin layer, the bonding possibility of the p-hydroxyacetophenone is reduced, a plurality of V-shaped grooves can be intermittently formed in the thin layer of the p-hydroxyacetophenone, micro crusts on the surface layer of the thin layer of the p-hydroxyacetophenone are broken, and the bonding quality of the p-hydroxyacetophenone is improved. The contact area of the p-hydroxyacetophenone and drying heat is increased, and the scraping plate and the shifting block are switched in a reciprocating manner, so that the dynamic circulation of scraping-slot shifting-scraping can be realized, the p-hydroxyacetophenone is always in a loose thin-layer state, and the caking rate of the p-hydroxyacetophenone in the drying process is reduced.

Description

Technical Field

[0001] This invention belongs to the field of drying equipment technology, and particularly relates to a drying equipment and method for p-hydroxyacetophenone. Background Technology

[0002] p-Hydroxyacetophenone is an important organic synthesis intermediate. It appears as white needle-like crystals at room temperature, readily soluble in hot water, methanol, and ethanol (polar solvents), but sparingly soluble in petroleum ether. It is naturally found in plants such as Artemisia annua and Artemisia capillaris. In the pharmaceutical field, it is used to manufacture choleretic drugs, and in the fragrance industry, it can be used to blend cherry pit or cinnamon flavorings. Due to stringent requirements for purity and physical form in end-use applications, p-hydroxyacetophenone requires drying during production.

[0003] The existing p-hydroxyacetophenone drying equipment includes a drying chamber body, a uniform drying chamber, a bidirectional drive motor, a conveyor belt, a heating mechanism, and an air guide assembly. The drive motor drives the conveyor belt to rotate and tumble the material, while the air pump uses a deflector plate and air guide column to blow heated air evenly onto the material, so as to achieve full contact between the hot air and the material.

[0004] While existing drying equipment can solve the problem of uniformity in static drying, it still has certain limitations in practical applications: hot air circulation equipment relies on belt tumbling to disperse materials, but p-hydroxyacetophenone has strong adhesion at high moisture content, and the planar conveying of the belt cannot force the lumpy material to disperse into a uniform thin layer, making it easy for p-hydroxyacetophenone to form a drying blind zone at the edge of the belt. Even with the addition of air guide components, it is difficult to penetrate the material layer that has already formed a crust on the surface, resulting in the inner layer of moisture not being able to escape effectively. Ultimately, this leads to the phenomenon of the outer layer being too dry and the inner layer being wet and sticky. This not only affects the drying quality of p-hydroxyacetophenone, but also consumes a lot of drying time, resulting in poor drying efficiency of the equipment.

[0005] Therefore, in view of the above situation, there is an urgent need to develop a drying equipment and method for p-hydroxyacetophenone to overcome the shortcomings in current practical applications. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a drying device and method for p-hydroxyacetophenone to solve the problems mentioned in the background.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A p-hydroxyacetophenone drying device includes an equipment box containing several vertically equidistantly distributed equipment racks. A material tray is slidably mounted on the front end of each equipment rack. Heating elements are installed on the inner walls of both sides of each equipment rack. Z-shaped grooves are symmetrically formed on the left and right sides of each equipment rack. A straight groove located above the Z-shaped grooves is formed on the outer wall of the right side of each equipment rack. An installation groove is formed on the inner wall of the right side of each equipment rack. There is a certain height difference between the two ends of the Z-shaped grooves, with the end of the Z-shaped groove being higher than its beginning. The device also includes: A reciprocating lateral movement mechanism is installed on the outer wall of the left side of the equipment frame. The lateral movement stroke of the reciprocating lateral movement mechanism is equal to the straight-line distance between the beginning and end of the Z-shaped groove. The reciprocating lateral movement mechanism is connected to the control system and the power system inside the equipment box. An alternating conversion mechanism is provided, comprising an installation roller, pulleys, a sliding sleeve, a conversion assembly, and a limiting assembly. Both ends of the installation roller are fitted with pulleys, which are slidably mounted in Z-shaped grooves on both sides of the equipment frame. Both ends of the installation roller extend beyond the equipment frame. One end of the installation roller is slidably connected to a reciprocating transverse mechanism, and the other end is connected to a limiting assembly slidably mounted on a straight groove. A sliding sleeve is axially and horizontally mounted in the middle of the installation roller. Both ends of the conversion assembly are mounted on the equipment frame and the sliding sleeve, respectively. The conversion assembly is connected to a control system and a power system. The single axial movement distance of the sliding sleeve on the installation roller is half the center distance between two adjacent levers along the axis of the sliding sleeve. Scrapers and levers are fixed on the upper and lower outer walls of the sliding sleeve, respectively. The levers are equidistantly distributed along the axial direction of the sliding sleeve. The installation trajectory of the scraper is consistent with the distribution trajectory of the levers, and the length of the scraper is consistent with the distribution length of the levers.

[0008] As a further technical solution of the present invention, the mounting roller is an H-shaped cylindrical structure with large diameters at both ends and small diameter in the middle. A groove is axially provided in the middle of the mounting roller. The sliding sleeve is formed by splicing two semi-circular arc sleeves together. A sliding strip that slides in cooperation with the groove is fixed on the inner wall of the arc sleeve.

[0009] As a further technical solution of the present invention, the conversion assembly includes a conversion gear, a conversion rack, a mounting plate, a magnetic block, and an electromagnet. The conversion gear is fixed on the outer wall of the left end of the sliding sleeve, and the conversion gear intermittently meshes with the conversion rack. The conversion rack is fixed on the inner wall of the left side of the equipment frame and located at the rear end of the equipment frame. The mounting plate is fixed on the outer wall of the right end of the sliding sleeve, and a magnetic block is fixed on the mounting plate. The electromagnets are symmetrically fixed on the inner wall of the right side of the equipment frame, with one electromagnet located at the front end of the equipment frame and the other electromagnet located at the rear end of the equipment frame. Both electromagnets are connected to the control system and the power supply system, and both electromagnets cooperate with the magnetic block when energized.

[0010] As a further technical solution of the present invention, the two electromagnets output opposite magnetic fields when energized. The electromagnet located at the front end of the equipment frame attracts the magnetic block when energized, while the electromagnet located at the rear end of the equipment frame repels the magnetic block when energized. The magnetic block is a permanent magnet made of neodymium iron boron.

[0011] As a further technical solution of the present invention, the limiting component includes a movable seat, a movable column, a limiting seat, a limiting groove, a connecting block, a limiting column, and a limiting spring. The movable seat is slidably mounted on the straight groove. The movable column is vertically slidably mounted on the movable seat. The limiting seat is mounted at the bottom of the movable column. The limiting seat has symmetrically opened limiting grooves that cooperate with the limiting column. The limiting column is slidably mounted on the upper and lower ends of the connecting block by the limiting spring. The connecting block is fixedly connected to one end of the mounting roller.

[0012] As a further technical solution of the present invention, the reciprocating transverse mechanism includes a drive assembly, a side bracket, a reciprocating assembly, a reversing assembly, and a guide post. The side brackets are symmetrically fixed on the left outer wall of the equipment frame. The drive assembly and the guide post are both installed between the two side brackets. The reversing assembly is installed on the two side brackets respectively. The reciprocating assembly is slidably installed on the guide post. One end of the reciprocating assembly is slidably connected to the mounting roller, and the other end of the reciprocating assembly is connected to the drive assembly. The reciprocating assembly is intermittently engaged with two reversing assemblies located at the front and rear ends of the equipment frame.

[0013] As a further technical solution of the present invention, the drive assembly includes a drive motor, a main gear, a drive gear, and a lead screw. The drive motor is fixed on a side bracket and is connected to the control system and the power supply system respectively. The main gear is fixed on the output end of the drive motor. The lead screw is symmetrically arranged between the two side brackets and rotatably connected to them. One end of each of the two lead screws is fixed with a drive gear. Both drive gears mesh with the main gear. The helical directions of the two lead screws are opposite and they intermittently cooperate with the reciprocating assembly.

[0014] As a further technical solution of the present invention, the reciprocating assembly includes a slide block, a mounting shaft, a screw block, a screw sleeve, a connector, a rotating block, a limiting post, a reversing post, and an elastic element. The slide block is slidably mounted on the guide post. A mounting shaft is mounted on one side of the slide block. A screw block and a rotating block are rotatably mounted on the mounting shaft. Screw sleeves are symmetrically mounted on both sides of the screw block. The two screw sleeves intermittently cooperate with two lead screws. A connector is fixed on the screw block and vertically slidably connected to one end of the mounting roller. The rotating block intermittently abuts against the limiting posts symmetrically fixed on the slide block. A reversing post that cooperates with the reversing assembly is fixed on the rotating block. One end of the reversing post is connected to the screw block through an elastic element.

[0015] As a further technical solution of the present invention, the commutation assembly includes a mounting base and a commutation plate. The mounting base is fixed to the inner side of two side brackets respectively, and the commutation plate that slides with the commutation column is obliquely mounted on the mounting base.

[0016] A method for drying p-hydroxyacetophenone, using the aforementioned p-hydroxyacetophenone drying equipment, is described below: S1. The control system works in conjunction with the power system to control the working status of the conversion component and the reciprocating lateral movement mechanism. The reciprocating lateral movement mechanism drives the mounting roller to move back and forth between the beginning and end of the Z-shaped groove. The mounting roller drives the scraper and the pusher block to move back and forth through the sliding sleeve. The scraper scrapes the p-hydroxyacetophenone on the material tray in a flexible manner by moving and forms a uniform thin layer of 1-3cm on the material tray. The pusher block, which is in a moving state and is evenly distributed, pushes out several V-shaped grooves on the thin layer of p-hydroxyacetophenone. S2. When the installation roller enters the end of the Z-shaped groove with the reciprocating transverse mechanism, the conversion component drives the sliding sleeve to move axially and rotate 180 degrees. The sliding sleeve drives the scraper and the push block to move and rotate axially synchronously and complete the dynamic conversion of the push block and the scraper. The push block and the scraper intermittently process the p-hydroxyacetophenone on the material tray through dynamic conversion. S3. When the mounting roller enters the first end of the Z-shaped groove with the reciprocating lateral movement mechanism, the conversion component drives the sliding sleeve to move in the opposite direction on the mounting roller. The sliding sleeve drives the scraper and the pusher block to move in the opposite direction synchronously. The scraper and the pusher block scrape and push the p-hydroxyacetophenone in the unscraped and unpush areas on the material tray by moving in the opposite direction and cooperating with the reciprocating lateral movement mechanism. The pusher block and the scraper realize the dynamic cycle of scraping and pushing the p-hydroxyacetophenone on the material tray by cooperating with the reciprocating lateral movement mechanism and the alternating conversion mechanism.

[0017] Compared with the prior art, the beneficial effects of the present invention are: The control system, in conjunction with the power system, can control the working status of the conversion component and the reciprocating traverse mechanism. The reciprocating traverse mechanism can drive the mounting roller to move back and forth between the beginning and end of the Z-shaped groove. When the mounting roller enters the end of the Z-shaped groove with the reciprocating traverse mechanism, the conversion component can drive the sliding sleeve to move axially and rotate 180 degrees. The sliding sleeve drives the scraper and the toggle block to move and rotate axially synchronously, completing the dynamic conversion of the toggle block and the scraper. When the mounting roller enters the beginning of the Z-shaped groove with the reciprocating traverse mechanism, the conversion component can drive the sliding sleeve to move in the opposite direction on the mounting roller. The sliding sleeve drives the scraper and the toggle block to move in the opposite direction synchronously. This allows the scraper and the toggle block to effectively and fully scrape or move the p-hydroxyacetophenone in the unscraped or unmoved areas during the reciprocating traverse mechanism's return movement. The scraper can move the p-hydroxyacetophenone on the material tray by moving. The process involves gentle scraping to create a uniform 1-3cm thin layer of p-hydroxyacetophenone on the tray, reducing the likelihood of adhesion and increasing its contact area with the drying heat. The evenly spaced scraping blocks, during their movement, create several V-shaped grooves on the thin layer of p-hydroxyacetophenone. This not only breaks up the micro-shell on the surface of the p-hydroxyacetophenone layer, allowing the internal moisture to evaporate more quickly under the drying heat, but also further increases the contact area between the p-hydroxyacetophenone and the drying heat, reducing the drying time. The reciprocating motion of the scraper and scraping blocks achieves a dynamic cycle of scraping-grooving-scraping, ensuring that the p-hydroxyacetophenone on the tray remains in a loose, thin layer, reducing the agglomeration rate during drying and improving the drying efficiency and quality of the equipment.

[0018] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the p-hydroxyacetophenone drying equipment provided in an embodiment of the present invention.

[0020] Figure 2 for Figure 1 Enlarged view of the structure of the equipment rack and the components mounted on it.

[0021] Figure 3 for Figure 2 A structural side view.

[0022] Figure 4 for Figure 3 A structural side view.

[0023] Figure 5 for Figure 2 A schematic diagram of the alternating switching mechanism, scraper, and lever.

[0024] Figure 6 for Figure 5 Side view of the alternating switching mechanism, scraper and lever.

[0025] Figure 7 for Figure 3 Enlarged view of a local structure of the intermediate conversion component.

[0026] Figure 8 for Figure 6 Exploded view of the structure of the restricted component.

[0027] Figure 9 for Figure 3 Enlarged view of the structure at point A in the middle.

[0028] Figure 10 for Figure 9 Enlarged view of the reciprocating component.

[0029] Reference numerals: 100-Equipment box, 200-Equipment rack, 210-Z-slot, 220-Straight slot, 230-Mounting slot, 300-Plate, 400-Heating element, 500-Reciprocating transverse mechanism, 510-Drive assembly, 511-Drive motor, 512-Main gear, 513-Drive gear, 514-Lead screw, 520-Side bracket, 530-Reciprocating assembly, 531-Slide, 532-Mounting shaft, 533-Threaded block, 534-Threaded sleeve, 535-Connector, 536-Rotating block, 537-Limiting post, 538-Reversing post, 539-Spring Components, 540-Reversing assembly, 541-Mounting base, 542-Reversing plate, 550-Guide post, 600-Alternating conversion mechanism, 610-Mounting roller, 620-Pulley, 630-Sliding sleeve, 640-Conversion assembly, 641-Conversion gear, 642-Conversion rack, 643-Mounting plate, 644-Magnetic block, 645-Electromagnet, 650-Restriction assembly, 651-Moving seat, 652-Moving column, 653-Restriction seat, 654-Restriction groove, 655-Connecting block, 656-Restriction column, 657-Restriction spring, 700-Scraper, 800-Pulley block. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0031] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0032] like Figures 1 to 10As shown, a p-hydroxyacetophenone drying device provided as an embodiment of the present invention includes a device box 100. Several device racks 200 are vertically and equidistantly distributed within the device box 100. A material tray 300 is slidably mounted on the front end of each device rack 200, and the material tray 300 contains p-hydroxyacetophenone to be dried. Heating elements 400 for drying p-hydroxyacetophenone are provided on the inner walls of both the left and right sides of the device racks 200. Preferably, the heating elements 400 are 8-14 μm infrared directional heating elements. The heating module, whose frequency band highly matches the vibration frequency of water molecules, can achieve simultaneous heating of the surface and internal moisture of p-hydroxyacetophenone. The device frame 200 has symmetrically arranged Z-shaped grooves 210 on its left and right sides. A straight groove 220 located above the Z-shaped grooves 210 is formed on the outer wall of the right side of the device frame 200. An installation groove 230 is formed on the inner wall of the right side of the device frame 200. There is a certain height difference between the two ends of the Z-shaped groove 210, with the end of the Z-shaped groove 210 being higher than its beginning. The module also includes: A reciprocating lateral movement mechanism 500 is installed on the outer wall of the left side of the equipment rack 200. The lateral movement stroke of the reciprocating lateral movement mechanism 500 is less than or equal to the straight distance between the beginning and end of the Z-shaped groove 210. The reciprocating lateral movement mechanism 500 is connected to the control system and the power system inside the equipment box 100. An alternating conversion mechanism 600 is provided, comprising an installation roller 610, pulleys 620, a sliding sleeve 630, a conversion assembly 640, and a limiting assembly 650. Both ends of the installation roller 610 are equipped with pulleys 620, which are slidably mounted in Z-shaped grooves 210 on both sides of the equipment frame 200. Both ends of the installation roller 610 extend outside the equipment frame 200. One end of the installation roller 610 is slidably connected to a reciprocating lateral movement mechanism 500, and the other end of the installation roller 610 is slidably mounted with a sliding sleeve 630. The limiting component 650 on the straight groove 220 is connected, and the sliding sleeve 630 is axially and horizontally slidably installed in the middle of the mounting roller 610. The two ends of the conversion component 640 are respectively installed on the equipment frame 200 and the sliding sleeve 630. The conversion component 640 is connected to the control system and the power system respectively. The conversion component 640 is used to drive the sliding sleeve 630 to move axially and rotate 180 degrees. The single axial movement distance of the sliding sleeve 630 on the mounting roller 610 is half of the center distance between two adjacent toggle blocks 800 along the axis of the sliding sleeve 630. Scraper 700 and lever 800 are fixed on the upper and lower outer walls of the sliding sleeve 630, respectively. The lever 800 are equidistantly distributed along the axial direction of the sliding sleeve 630. The scraper 700 preferably adopts a plate-shaped structure with an arc-shaped bottom edge. The installation trajectory of the scraper 700 is consistent with the distribution trajectory of the lever 800, and the length of the scraper 700 is consistent with the distribution length of the lever 800. The control system, in conjunction with the power supply system, can control the working status of the conversion component 640 and the reciprocating lateral movement mechanism 500. The reciprocating lateral movement mechanism 500 can drive the mounting roller 610 to reciprocate between the beginning and end of the Z-shaped groove 210. The mounting roller 610 drives the scraper 700 and the toggle block 800 to reciprocate through the sliding sleeve 630. The scraper 700 can flexibly scrape the p-hydroxyacetophenone on the material tray 300 by moving, so that it forms a uniform thin layer of 1-3 cm on the material tray 300, reducing the p-hydroxyacetophenone content. The adhesion of ketone increases its contact area with the drying heat; the equidistantly distributed p-hydroxyacetophenone (PHA) blocks 800, during their movement, can create several V-shaped grooves on the thin layer of p-hydroxyacetophenone. This not only breaks the micro-shell on the surface of the thin layer of p-hydroxyacetophenone, allowing the moisture inside the p-hydroxyacetophenone to evaporate more quickly under the drying of the heating element 400, but also further increases the contact area between p-hydroxyacetophenone and the drying heat, reduces the drying time of p-hydroxyacetophenone, and improves the drying efficiency and drying quality of the equipment. When the mounting roller 610 enters the end of the Z-groove 210 with the reciprocating lateral movement mechanism 500, the conversion component 640 can drive the sliding sleeve 630 to move axially and rotate 180 degrees. The sliding sleeve 630 drives the scraper 700 and the lever 800 to move and rotate axially synchronously, completing the dynamic conversion between the lever 800 and the scraper 700. When the mounting roller 610 enters the beginning of the Z-groove 210 with the reciprocating lateral movement mechanism 500, the conversion component 640 can drive the sliding sleeve 630 to move in the opposite direction on the mounting roller 610. The sliding sleeve 630 drives the scraper 700 and the lever 800 to move axially and rotate synchronously, completing the dynamic conversion between the lever 800 and the scraper 700. The synchronous reverse movement of 800 allows the scraper 700 and the toggle block 800 to effectively and fully scrape or toggle the p-hydroxyacetophenone in the unscraped or untoggled areas during the reciprocating transverse movement mechanism 500. This achieves thorough treatment of the p-hydroxyacetophenone on the material tray 300 without any dead angles. By repeating this process, a dynamic cycle of scraping-toggle-scraping can be achieved, ensuring that the p-hydroxyacetophenone on the material tray 300 is always in a loose, thin layer state. This reduces the agglomeration rate of p-hydroxyacetophenone during the drying process and improves the drying efficiency and quality of the equipment.

[0033] In a preferred embodiment, the mounting roller 610 is an H-shaped cylindrical structure with large diameters at both ends and a small diameter in the middle. The mounting roller 610 has an axial groove in the middle. The sliding sleeve 630 is preferably made of two semi-circular arc sleeves spliced ​​together. The inner wall of the arc sleeve is fixed with a slide bar that slides with the groove. The two arc sleeves are connected as a whole by screws or bolts and spliced ​​into a complete circular sliding sleeve 630. The sliding sleeve 630 moves axially in the middle of the mounting roller 610 through the slide bar. The two ends with larger diameters on the mounting roller 610 can limit the movement stroke of the sliding sleeve 630 to avoid excessive lateral movement.

[0034] like Figures 3 to 7As shown, in a preferred embodiment of the present invention, the conversion assembly 640 includes a conversion gear 641, a conversion rack 642, a mounting plate 643, a magnetic block 644, and an electromagnet 645. The conversion gear 641 is fixed on the outer wall of the left end of the sliding sleeve 630, and the conversion gear 641 intermittently meshes with the conversion rack 642. The conversion rack 642 is fixed on the inner wall of the left side of the equipment frame 200 and located at the rear end of the equipment frame 200. The mounting plate 643 is fixed on the outer wall of the right end of the sliding sleeve 630, and the magnetic block 644 is fixed on the mounting plate 643. The electromagnets 645 are symmetrically fixed on the inner wall of the right side of the equipment frame 200, with one electromagnet 645 located at the front end of the equipment frame 200 and the other electromagnet 645 located at the rear end of the equipment frame 200. Both electromagnets 645 are connected to the control system and the power supply system, and both electromagnets 645 cooperate with the magnetic block 644 when energized.

[0035] The two electromagnets 645 output opposite magnetic properties when energized. The electromagnet 645 located at the front end of the equipment rack 200 attracts the magnetic block 644 when energized, while the electromagnet 645 located at the rear end of the equipment rack 200 repels the magnetic block 644 when energized. The magnetic block 644 is preferably a permanent magnet made of neodymium iron boron.

[0036] When the installation roller 610 enters the end of the Z-groove 210 with the reciprocating lateral movement mechanism 500, the installation roller 610 drives the sliding sleeve 630 to move laterally to the rear end area of ​​the equipment frame 200. The electromagnet 645 located at the rear end of the equipment frame 200 can drive the sliding sleeve 630 to move axially on the installation roller 610 by mutual repulsion with the electromagnet 645. The sliding sleeve 630 drives the conversion gear 641, scraper 700 and toggle block 800 to move laterally synchronously, so that the conversion gear 641 moves laterally to the position of meshing with the conversion rack 642. When the reciprocating lateral movement mechanism 500 drives the installation roller 610 to move out of the end of the Z-groove 210, the conversion rack 642 can drive the conversion gear 641 in the moving state to rotate 180 degrees. The conversion gear 641 drives the sliding sleeve 630 and the installation roller 610 to rotate 180 degrees. The sliding sleeve 630 drives the scraper 700 to move axially on the installation roller 610. The plate 700 and the scraper 800 rotate 180 degrees, thus completing the dynamic conversion between the scraper 800 and the scraper 700. The scraper 700 can flexibly scrape the p-hydroxyacetophenone on the material tray 300 by moving, so that it forms a uniform thin layer of 1-3cm on the material tray 300, reducing the possibility of p-hydroxyacetophenone sticking and increasing its contact area with the drying heat. During the movement, the equidistantly distributed scraper 800 can scrape out several V-shaped grooves on the thin layer of p-hydroxyacetophenone. This can not only break the micro-shell on the surface of the thin layer of p-hydroxyacetophenone, so that the moisture inside p-hydroxyacetophenone can evaporate more quickly under the drying of the heating element 400, but also further increase the contact area between p-hydroxyacetophenone and the drying heat, reduce the drying time of p-hydroxyacetophenone, and improve the drying efficiency and drying quality of the equipment. When the mounting roller 610 enters the first end of the Z-groove 210 with the reciprocating lateral movement mechanism 500, the mounting roller 610 drives the sliding sleeve 630 to move laterally to the front end area of ​​the equipment frame 200. The electromagnet 645 located at the front end of the equipment frame 200 attracts the sliding sleeve 630 to move in the opposite direction on the mounting roller 610. The sliding sleeve 630 drives the conversion gear 641, scraper 700 and lever 800 to move laterally in the opposite direction simultaneously. This not only allows the conversion gear 641 to move to a path separated from the conversion rack 642, but also drives the scraper... Scraper 700 and lever 800 move to areas on the thin layer of p-hydroxyacetophenone that have not been scraped or grooved, so that scraper 700 and lever 800 can effectively and fully scrape or move the p-hydroxyacetophenone in the unscraped or ungrouted areas during the reciprocating transverse mechanism 500's return process. This achieves thorough treatment of the p-hydroxyacetophenone on tray 300 without any dead angles. By repeating this process, a dynamic cycle of scraping-grooving-scraping can be achieved, ensuring that the p-hydroxyacetophenone on tray 300 is always in a loose thin layer state, reducing the agglomeration rate of p-hydroxyacetophenone during the drying process.

[0037] In a preferred embodiment, the lever 800 preferably adopts a V-shaped block structure, and the meshing paths of the conversion gear 641 and the conversion rack 642 can both complete the rotational drive of the sliding sleeve 630-180 degrees.

[0038] like Figures 3 to 8 As shown, in a preferred embodiment of the present invention, the limiting component 650 includes a movable seat 651, a movable column 652, a limiting seat 653, a limiting groove 654, a connecting block 655, a limiting column 656, and a limiting spring 657. The movable seat 651 is slidably mounted on the straight groove 220. The movable column 652 is vertically slidably mounted on the movable seat 651. The limiting seat 653 is mounted on the bottom of the movable column 652. The limiting groove 654, which cooperates with the limiting column 656, is symmetrically opened in the limiting seat 653. The limiting column 656 is slidably mounted on the upper and lower ends of the connecting block 655 through the limiting spring 657. The connecting block 655 is fixedly connected to one end of the mounting roller 610.

[0039] The limiting spring 657, in conjunction with the limiting groove 654 and the limiting post 656, can limit the rotation of the mounting roller 610, ensuring that the mounting roller 610 remains stationary when the conversion gear 641 and conversion rack 642 are not engaged. This ensures the stability of the scraper 700 and the toggle block 800 during lateral movement, allowing the scraper 700 and the toggle block 800 to always maintain the correct posture to scrape and groove the p-hydroxyacetophenone, ensuring the processing quality of the scraper 700 and the toggle block 800 on the p-hydroxyacetophenone. This keeps the p-hydroxyacetophenone on the tray 300 in a loose, thin layer, reducing the agglomeration rate of p-hydroxyacetophenone during the drying process. When the mounting roller 610 moves vertically due to the height difference between the two ends of the Z-groove 210, the moving block can restrict the rotation of the limiting seat 653, so that it can only move vertically on the moving block, thus preventing the mounting roller 610 from deflecting or other phenomena during the movement of the reciprocating transverse mechanism 500.

[0040] In a preferred embodiment, the length of the limiting groove 654 is greater than the axial lateral displacement length of the sliding sleeve 630. This ensures that the limiting post 656 is always in a cooperating state with the limiting groove 654 under the drive of the limiting elasticity. The limiting groove 654 is preferably an arc-shaped groove. When the conversion gear 641 meshes with the conversion rack 642 and drives the mounting roller 610 to rotate, the mounting roller 610 can drive the limiting post 656 to move outside the limiting groove 654, avoiding interference between the two and affecting the normal rotation of the mounting roller 610.

[0041] like Figure 2 , Figure 3 , Figure 9 and Figure 10As shown, in a preferred embodiment of the present invention, the reciprocating lateral movement mechanism 500 includes a drive assembly 510, a side support 520, a reciprocating assembly 530, a reversing assembly 540, and a guide post 550. The side supports 520 are symmetrically fixed on the left outer wall of the equipment frame 200. The drive assembly 510 and the guide post 550 are both installed between the two side supports 520. The reversing assembly 540 is installed on the two side supports 520 respectively. The reciprocating assembly 530 is slidably installed on the guide post 550. One end of the reciprocating assembly 530 is slidably connected to the mounting roller 610, and the other end of the reciprocating assembly 530 is connected to the drive assembly 510. The reciprocating assembly 530 is intermittently engaged with the two reversing assemblies 540 located at the front and rear ends of the equipment frame 200.

[0042] The drive assembly 510 includes a drive motor 511, a main gear 512, a drive gear 513, and a lead screw 514. The drive motor 511 is fixed on a side bracket 520 and is connected to the control system and the power system respectively. The main gear 512 is fixed on the output end of the drive motor 511. The lead screw 514 is symmetrically arranged between the two side brackets 520 and rotatably connected to them. One end of each of the two lead screws 514 is fixed with a drive gear 513. Both drive gears 513 mesh with the main gear 512. The helical directions of the two lead screws 514 are opposite and they intermittently cooperate with the reciprocating assembly 530.

[0043] The drive motor 511 drives the main gear 512 to rotate, which in turn drives two drive gears 513 to rotate synchronously and in the same direction. The two drive gears 513 then drive two lead screws 514 to rotate. Two reversing components 540 can intermittently engage with the reciprocating component 530 and the two lead screws 514. Through this intermittent engagement, the two lead screws 514 can drive the mounting roller 610 to reciprocate laterally at both ends of the Z-groove 210, thereby causing the scraper 700 and the lever 800 to reciprocate. This allows the scraper 700 to flexibly move the p-hydroxyacetophenone on the material tray 300. The material is scraped flat to form a uniform thin layer of 1-3 cm on the material tray 300, reducing the possibility of p-hydroxyacetophenone sticking and increasing its contact area with the drying heat. The equidistantly distributed prying blocks 800 can pry several V-shaped grooves on the thin layer of p-hydroxyacetophenone. This not only breaks the micro-shell on the surface of the thin layer of p-hydroxyacetophenone, allowing the moisture inside the p-hydroxyacetophenone to evaporate more quickly under the drying of the heating element 400, but also further increases the contact area between p-hydroxyacetophenone and the drying heat, reduces the drying time of p-hydroxyacetophenone, and improves the drying efficiency and drying quality of the equipment.

[0044] In a preferred embodiment, the lengths of both the lead screw 514 and the guide post 550 are greater than the length of the Z-slot 210.

[0045] like Figure 2 , Figure 3 , Figure 9 and Figure 10 As shown, in a preferred embodiment of the present invention, the reciprocating assembly 530 includes a slide 531, a mounting shaft 532, a screw block 533, a screw sleeve 534, a connector 535, a rotating block 536, a limiting post 537, a reversing post 538, and an elastic element 539. The slide 531 is slidably mounted on the guide post 550. The mounting shaft 532 is mounted on one side of the slide 531. The screw block 533 and the rotating block 536 are rotatably mounted on the mounting shaft 532. 3. Screw sleeves 534 are symmetrically installed on both sides. The two screw sleeves 534 are intermittently engaged with the two lead screws 514. A connecting piece 535 is fixed on the screw block 533 and vertically slidably connected to one end of the mounting roller 610. The rotating block 536 intermittently abuts against the limiting post 537 symmetrically fixed on the slide block 531. A reversing post 538 is fixed on the rotating block 536 and engages with the reversing assembly 540. One end of the reversing post 538 is connected to the screw block 533 through an elastic member 539.

[0046] The commutation assembly 540 includes a mounting base 541 and a commutation plate 542. The mounting base 541 is fixed to the inner side of two side brackets 520 respectively. The commutation plate 542, which slides and engages with the commutation column 538, is obliquely mounted on the mounting base 541.

[0047] When the two lead screws 514 rotate, the screw block 533, with the cooperation of the elastic element 539, the rotating block 536, and the limiting post 537, can individually engage with one lead screw 514. The lead screw 514, through rotation, can drive the screw block 533 to move. The screw block 533 drives the mounting roller 610 to move along the layout trajectory of the Z-groove 210. When the screw block 533 drives the reversing post 538 to contact the reversing plate 542 on a side bracket 520, the reversing plate 542 can drive the rotating block 536, which is in a moving state, to rotate through the reversing post 538. The rotating block 536, through rotation and engagement with the elastic element 539, can drive the screw block 533 to rotate on the mounting shaft 532, thus... The screw block 533 is always biased to the same side as the rotating block 536. The screw block 533 drives the screw sleeve 534 to rotate. The screw sleeve 534 can change its engagement state with the two lead screws 514 by rotating. This allows the two lead screws 514 to drive the screw block 533 to move back and forth through intermittent engagement with the screw sleeve 534. In turn, the screw block 533 can drive the mounting roller 610 to move back and forth at both ends of the Z-shaped groove 210. The mounting roller 610 drives the scraper 700 and the paving block 800 to move back and forth, thereby completing the scraping and grooving of p-hydroxyacetophenone, increasing the contact area between p-hydroxyacetophenone and the drying heat, reducing the drying time of p-hydroxyacetophenone, and improving the drying efficiency and drying quality of the equipment.

[0048] In a preferred embodiment, the connector 535 preferably adopts a T-shaped block structure, and the T-shaped block is vertically provided with a sliding groove that slides with the mounting roller 610. During the movement of the mounting roller 610 along the trajectory of the Z-shaped groove 210, it is ensured that the T-shaped block is always in a sliding engagement state with it. The elastic element 539 is preferably a U-shaped elastic band, but it can also be a spring or torsion spring that meets the elasticity requirements.

[0049] A method for drying p-hydroxyacetophenone, which uses the aforementioned p-hydroxyacetophenone drying equipment to dry p-hydroxyacetophenone, is as follows: S1. The control system, in conjunction with the power supply system, can control the working state of the conversion component 640 and the reciprocating lateral movement mechanism 500. The drive motor 511 drives the main gear 512 to rotate, and the main gear 512 drives two drive gears 513 to rotate synchronously and in the same direction. The two drive gears 513 drive two lead screws 514 to rotate. The screw block 533, with the cooperation of the elastic element 539, the rotating block 536, and the limiting post 537, can individually cooperate with one lead screw 514. The lead screw 514 can drive the screw block 533 to move by rotating. The screw block 533 drives the mounting roller 610 to move along the layout trajectory of the Z-shaped groove 210. When the screw block 533 drives the reversing column 538 to contact the reversing plate 542 on a side bracket 520, the reversing plate 542 can be driven by the reversing column 538 to rotate in the moving state. The rotating block 536 rotates, and through its rotation and engagement with the elastic element 539, it drives the screw block 533 to rotate on the mounting shaft 532, ensuring that the screw block 533 and the rotating block 536 are always biased to the same side. The screw block 533 drives the screw sleeve 534 to rotate, and the screw sleeve 534 can change its engagement with the two lead screws 514 through rotation. This allows the two lead screws 514 to drive the screw block 533 to reciprocate laterally through intermittent engagement with the screw sleeve 534. Consequently, the screw block 533 drives the mounting roller 610 to reciprocate laterally at both ends of the Z-groove 210. The mounting roller 610 drives the scraper 700 and the paving block 800 to reciprocate, thereby completing the scraping and grooving of p-hydroxyacetophenone, increasing the contact area between p-hydroxyacetophenone and the drying heat, and reducing the drying time of p-hydroxyacetophenone. S2. When the installation roller 610 enters the end of the Z-groove 210 with the reciprocating lateral movement mechanism 500, the installation roller 610 drives the sliding sleeve 630 to move laterally to the rear end area of ​​the equipment frame 200. The electromagnet 645 located at the rear end of the equipment frame 200 can drive the sliding sleeve 630 to move axially on the installation roller 610 by mutual repulsion with the electromagnet 645. The sliding sleeve 630 drives the conversion gear 641, scraper 700 and toggle block 800 to move laterally synchronously, so that the conversion gear 641 moves laterally to the position of meshing with the conversion rack 642. When the reciprocating lateral movement mechanism 500 drives the installation roller 610 to move out of the end of the Z-groove 210, the conversion rack 642 can drive the conversion gear 641 in the moving state to rotate 180 degrees. The conversion gear 641 drives the sliding sleeve 630 and the installation roller 610 to rotate 180 degrees. The sliding sleeve 630 drives the scraper 700 and the toggle block 800 to rotate 180 degrees, thereby completing the dynamic conversion between the toggle block 800 and the scraper 700. The scraper 700 can flexibly scrape the p-hydroxyacetophenone on the material tray 300 by moving, so that it forms a uniform thin layer of 1-3cm on the material tray 300, reducing the possibility of p-hydroxyacetophenone sticking and increasing its contact area with the drying heat. The toggle blocks 800, which are evenly distributed, can create several V-shaped grooves on the thin layer of p-hydroxyacetophenone during the movement process. This can not only break the micro-shell on the surface of the thin layer of p-hydroxyacetophenone, so that the moisture inside p-hydroxyacetophenone can evaporate more quickly under the drying of the heating element 400, but also further increase the contact area between p-hydroxyacetophenone and the drying heat, reducing the drying time of p-hydroxyacetophenone. S3. When the mounting roller 610 enters the first end of the Z-groove 210 with the reciprocating lateral movement mechanism 500, the mounting roller 610 drives the sliding sleeve 630 to move laterally to the front end area of ​​the equipment frame 200. The electromagnet 645 located at the front end of the equipment frame 200 can drive the sliding sleeve 630 to move in the opposite direction on the mounting roller 610 by mutual attraction. The sliding sleeve 630 drives the conversion gear 641, scraper 700 and toggle block 800 to move laterally in the opposite direction synchronously. This not only allows the conversion gear 641 to move to a path separated from the conversion rack 642, but also drives the scraper 700 to move in the opposite direction. The scraper 700 and the pusher block 800 move to the areas on the thin layer of p-hydroxyacetophenone that have not been scraped or grooved, so that the scraper 700 and the pusher block 800 can effectively and fully scrape or push the p-hydroxyacetophenone in the unscraped or ungrouted areas during the reciprocating transverse mechanism 500. This achieves thorough treatment of the p-hydroxyacetophenone on the tray 300 without any dead angles. By repeating this process, a dynamic cycle of scraping-grooving-scraping can be achieved, so that the p-hydroxyacetophenone on the tray 300 is always in a loose thin layer state, reducing the agglomeration rate of p-hydroxyacetophenone during the drying process.

[0050] 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, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A p-hydroxyacetophenone drying device, comprising a device box, wherein a plurality of device racks are vertically and equidistantly distributed within the device box, a material tray is slidably mounted on the front end of each device rack, heating elements are provided on the inner walls of both the left and right sides of each device rack, Z-shaped grooves are symmetrically formed on the left and right sides of each device rack, a straight groove is formed on the outer wall of the right side of each device rack above the Z-shaped grooves, and an installation groove is formed on the inner wall of the right side of each device rack, wherein there is a certain height difference between the two ends of the Z-shaped grooves, and the end of the Z-shaped groove is higher than its beginning end, characterized in that... Also includes: A reciprocating lateral movement mechanism is installed on the outer wall of the left side of the equipment frame. The lateral movement stroke of the reciprocating lateral movement mechanism is equal to the straight-line distance between the beginning and end of the Z-shaped groove. The reciprocating lateral movement mechanism is connected to the control system and the power system inside the equipment box. An alternating conversion mechanism is provided, comprising an installation roller, pulleys, a sliding sleeve, a conversion assembly, and a limiting assembly. Both ends of the installation roller are fitted with pulleys, which are slidably mounted in Z-shaped grooves on both sides of the equipment frame. Both ends of the installation roller extend beyond the equipment frame. One end of the installation roller is slidably connected to a reciprocating transverse mechanism, and the other end is connected to a limiting assembly slidably mounted on a straight groove. A sliding sleeve is axially and horizontally mounted in the middle of the installation roller. Both ends of the conversion assembly are mounted on the equipment frame and the sliding sleeve, respectively. The conversion assembly is connected to a control system and a power system. The single axial movement distance of the sliding sleeve on the installation roller is half the center distance between two adjacent levers along the axis of the sliding sleeve. Scrapers and levers are fixed on the upper and lower outer walls of the sliding sleeve, respectively. The levers are equidistantly distributed along the axial direction of the sliding sleeve. The installation trajectory of the scraper is consistent with the distribution trajectory of the levers, and the length of the scraper is consistent with the distribution length of the levers.

2. The p-hydroxyacetophenone drying equipment according to claim 1, characterized in that, The mounting roller is an H-shaped cylindrical structure with large diameters at both ends and small diameter in the middle. A groove is axially provided in the middle of the mounting roller. The sliding sleeve is made of two semi-circular arc sleeves spliced ​​together. A sliding strip that slides in cooperation with the groove is fixed on the inner wall of the arc sleeve.

3. The p-hydroxyacetophenone drying equipment according to claim 1, characterized in that, The conversion assembly includes a conversion gear, a conversion rack, a mounting plate, a magnetic block, and an electromagnet. The conversion gear is fixed to the outer wall of the left end of the sliding sleeve, and the conversion gear intermittently meshes with the conversion rack. The conversion rack is fixed to the inner wall of the left side of the equipment frame and located at the rear end of the equipment frame. The mounting plate is fixed to the outer wall of the right end of the sliding sleeve, and a magnetic block is fixed on the mounting plate. The electromagnets are symmetrically fixed to the inner wall of the right side of the equipment frame, with one electromagnet located at the front end of the equipment frame and the other electromagnet located at the rear end of the equipment frame. Both electromagnets are connected to the control system and the power supply system, and both electromagnets cooperate with the magnetic block when energized.

4. The p-hydroxyacetophenone drying equipment according to claim 3, characterized in that, The two electromagnets output opposite magnetic fields when energized. The electromagnet located at the front end of the equipment frame attracts the magnetic block when energized, while the electromagnet located at the rear end of the equipment frame repels the magnetic block when energized. The magnetic block is a permanent magnet made of neodymium iron boron.

5. The p-hydroxyacetophenone drying equipment according to claim 1, characterized in that, The limiting component includes a movable seat, a movable column, a limiting seat, a limiting groove, a connecting block, a limiting column, and a limiting spring. The movable seat is slidably mounted on the linear groove. A movable column is vertically slidably mounted on the movable seat. A limiting seat is mounted on the bottom of the movable column. The limiting seat has symmetrically arranged limiting grooves that cooperate with the limiting column. The limiting column is slidably mounted on the upper and lower ends of the connecting block through the limiting spring. The connecting block is fixedly connected to one end of the mounting roller.

6. The p-hydroxyacetophenone drying equipment according to claim 1, characterized in that, The reciprocating lateral movement mechanism includes a drive assembly, side supports, a reciprocating assembly, a reversing assembly, and guide columns. The side supports are symmetrically fixed on the left outer wall of the equipment frame. The drive assembly and guide columns are both installed between the two side supports. The reversing assemblies are respectively installed on the two side supports. The reciprocating assembly is slidably installed on the guide columns. One end of the reciprocating assembly is slidably connected to the mounting roller, and the other end of the reciprocating assembly is connected to the drive assembly. The reciprocating assembly is intermittently engaged with two reversing assemblies located at the front and rear ends of the equipment frame.

7. The p-hydroxyacetophenone drying equipment according to claim 6, characterized in that, The drive assembly includes a drive motor, a main gear, a drive gear, and a lead screw. The drive motor is fixed on a side bracket and connected to the control system and the power system respectively. The main gear is fixed on the output end of the drive motor. The lead screw is symmetrically arranged between the two side brackets and rotatably connected to them. One end of each of the two lead screws is fixed with a drive gear. Both drive gears mesh with the main gear. The helical directions of the two lead screws are opposite and they intermittently cooperate with the reciprocating assembly.

8. The p-hydroxyacetophenone drying equipment according to claim 7, characterized in that, The reciprocating assembly includes a slide block, a mounting shaft, a screw block, a screw sleeve, a connector, a rotating block, a limiting post, a reversing post, and an elastic element. The slide block is slidably mounted on the guide post. A mounting shaft is mounted on one side of the slide block. A screw block and a rotating block are rotatably mounted on the mounting shaft. Screw sleeves are symmetrically mounted on both sides of the screw block. The two screw sleeves intermittently cooperate with two lead screws. A connector is fixed on the screw block and vertically slidably connected to one end of the mounting roller. The rotating block intermittently abuts against the limiting posts symmetrically fixed on the slide block. A reversing post that cooperates with the reversing assembly is fixed on the rotating block. One end of the reversing post is connected to the screw block through an elastic element.

9. The p-hydroxyacetophenone drying equipment according to claim 8, characterized in that, The commutation assembly includes a mounting base and a commutation plate. The mounting base is fixed to the inner side of two side brackets, and the commutation plate, which slides and engages with the commutation column, is obliquely mounted on the mounting base.

10. A method for drying p-hydroxyacetophenone, characterized in that, The p-hydroxyacetophenone is dried using the p-hydroxyacetophenone drying equipment as described in claim 1, and the specific method is as follows: S1. The control system works in conjunction with the power system to control the working status of the conversion component and the reciprocating lateral movement mechanism. The reciprocating lateral movement mechanism drives the mounting roller to move back and forth between the beginning and end of the Z-shaped groove. The mounting roller drives the scraper and the pusher block to move back and forth through the sliding sleeve. The scraper scrapes the p-hydroxyacetophenone on the material tray in a flexible manner by moving and forms a uniform thin layer of 1-3cm on the material tray. The pusher block, which is in a moving state and is evenly distributed, pushes out several V-shaped grooves on the thin layer of p-hydroxyacetophenone. S2. When the installation roller enters the end of the Z-shaped groove with the reciprocating transverse mechanism, the conversion component drives the sliding sleeve to move axially and rotate 180 degrees. The sliding sleeve drives the scraper and the push block to move and rotate axially synchronously and complete the dynamic conversion of the push block and the scraper. The push block and the scraper intermittently process the p-hydroxyacetophenone on the material tray through dynamic conversion. S3. When the mounting roller enters the first end of the Z-shaped groove with the reciprocating lateral movement mechanism, the conversion component drives the sliding sleeve to move in the opposite direction on the mounting roller. The sliding sleeve drives the scraper and the pusher block to move in the opposite direction synchronously. The scraper and the pusher block scrape and push the p-hydroxyacetophenone in the unscraped and unpush areas on the material tray by moving in the opposite direction and cooperating with the reciprocating lateral movement mechanism. The pusher block and the scraper realize the dynamic cycle of scraping and pushing the p-hydroxyacetophenone on the material tray by cooperating with the reciprocating lateral movement mechanism and the alternating conversion mechanism.

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