Propylthiouracil high-quality product preparation device
By designing a device for drug tablet pressing, using servo motor to vibrate and disperse powder, air pump and filter screen to screen drugs, and collect unqualified products, the problems of powder agglomeration and poor quality in drug tablet presses are solved. Achieve uniform loading and efficient production.
Patent Information
- Application Number
- CN202411153929.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-01-03
AI Technical Summary
In use of existing pharmaceutical tablet presses, the powder is prone to agglomeration and accumulation, resulting in uneven cutting and uneven weight of the drug, which affects the quality of the drug and increases the economic losses of the producer.
A fine production device for propylthiouracil including a rack, screening device and recycling device was designed. The powder was dispersed through a swing frame driven by a servo motor. The screening device used an air pump and a filter to screen drugs with incomplete appearance and recovered. The device collects unqualified drugs to ensure uniform loading and improve production efficiency.
It effectively reduces the probability of powder agglomeration, ensures the quality of the drug, reduces the uneven and incompleteness of the drug weight, improves production efficiency, and reduces economic losses.
Smart Images
Figure CN119239035A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of processing equipment, and in particular to a device for preparing fine propylthiouracil. Background Art
[0002] Propylthiouracil, chemically known as 6-propyl-2-thiouracil, is an organic compound with the chemical formula C7H10N2OS. It inhibits the synthesis of thyroid hormones by inhibiting the peroxidase system in the thyroid gland, preventing the iodination of tyrosine in the thyroid gland and the condensation of iodinated tyrosine. With the development of society, propylthiouracil often needs to be pressed into tablets during its production process, and a tablet press is required for its preparation.
[0003] The inventors found in their daily work that most pharmaceutical tablet presses often add powder into the hopper during use, but the powder is prone to caking and accumulation during the production process, resulting in uneven feeding, uneven weight or incomplete medicines, affecting the quality of the medicines and increasing the economic losses of the producers. Improvements are needed. Summary of the invention
[0004] The purpose of the present invention is to solve the problem that most pharmaceutical tablet presses in the prior art often add powder into the hopper during use, but the powder is prone to caking and accumulation during the production process, resulting in uneven feeding, uneven weight or incomplete medicines, affecting the quality of the medicines and increasing the economic losses of the producers. A propylthiouracil fine product preparation device is proposed.
[0005] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: a propylthiouracil fine product preparation device, comprising a frame, a screening device, a recovery device and a feeding device, a cover plate is installed on the surface of the frame, an indicator light is fixedly connected to one side of the frame, an observation window is installed on the surface of the frame, a protective window is installed on one side of the frame, an operation button is installed on the surface of the frame, two symmetrically arranged feed hoppers are fixedly connected to the upper surface of the frame, and a material discharge guide groove is fixedly connected to one side of the frame; The screening device is arranged on one side of the frame; The recovery device is arranged on one side of the frame close to the material discharge guide groove; The feeding device is arranged on the upper surface of the frame, one end of the feeding device is inserted into the feeding hopper, the feeding device includes a servo motor, the servo motor is placed above the frame, a mounting hoop is installed on the upper surface of the frame, the mounting hoop is sleeved on the servo motor, the driving end of the servo motor is fixedly connected with a swing frame, a transmission rod is inserted into the interior of the feeding hopper, and the swing frame is sleeved on the transmission rod. Through the feeding device, the powder can be vibrated and dispersed, the probability of powder agglomeration is reduced, the equipment is ensured to be evenly loaded, the weight unevenness or incompleteness of the medicines is reduced, the production quality of the medicines is ensured, and the economic losses of the producers are reduced.
[0006] Preferably, one end of the swing frame located in the feed hopper is fixedly connected to a positioning ring, and the surface of the positioning ring is fixedly connected to a stirring rod, and the stirring rod is arranged in a vertical direction for easy alignment.
[0007] Preferably, a sealing ring is fixedly connected to the inner wall of the feed hopper, and the sealing ring is sleeved on the transmission rod.
[0008] Preferably, a force-bearing block is fixedly connected to the transmission rod, and the force-bearing block is cylindrical and located inside the swing frame. When producing propylthiouracil for tableting, the powder is put into the feed hopper, and then the material enters the frame and undergoes tableting. The tablets processed by the tableting slide out through the unloading guide groove. During the production process, the powder is easy to accumulate in the feed hopper, and then the servo motor is turned on, and the servo motor drives the swing frame to swing back and forth, and then the swing frame hits the force-bearing block during the rotation, and then the transmission rod is stressed and drives the two sets of positioning rings and the stirring rod to vibrate, and the vibration rod immediately vibrates the powder to disperse it, and through the feeding device, the powder is easily vibrated and dispersed, thereby reducing the probability of powder agglomeration, ensuring uniform feeding of the equipment, reducing the uneven weight or incompleteness of the medicines, ensuring the production quality of the medicines, and reducing the economic losses of the producers.
[0009] Preferably, the screening device includes a guide pipe, one end of which is fixedly connected to a material guide hood, the material guide hood is located below the material discharge guide groove, the side of the frame close to the material discharge guide groove is fixedly connected to an air pump, the input end of the air pump is fixedly connected to an exhaust cavity, one end of the exhaust cavity is fixedly connected to the guide pipe, and the exhaust cavity is communicated with the guide pipe. Through the screening device, it is convenient to screen light-weight medicines with incomplete appearance, etc., reduce the subsequent manual sample inspection operation steps, improve the production efficiency of the equipment, and reduce the flow of poor-quality medicines into the market.
[0010] Preferably, a filter is installed at the position where the vacuum cavity is connected to the guide tube, and the filter is placed in a vertical direction. When the tablets are unloaded, the air pump is turned on, and the air pump sucks gas through the vacuum cavity and discharges it through the exhaust pipe. The gas discharged from the exhaust pipe enters the mounting block, and then the stop block is pushed out, the spring is deformed by force, and the through hole is moved away from the bottom of the guide tube. Then the stop block blocks one end of the guide tube, and then the air pump sucks gas through the vacuum cavity, the guide tube and the guide cover. When the medicines fall into other receiving containers, the medicines with incomplete appearance and other light weight are immediately sucked into the guide tube through the guide cover, and the medicines sucked into the guide tube are blocked in the guide tube by the filter. Through the screening device, it is convenient to screen the medicines with incomplete appearance and other light weight, reduce the subsequent manual sample checking operation steps, improve the production efficiency of the equipment, and reduce the flow of poor quality medicines into the market.
[0011] Preferably, the recycling device includes a mounting block, which is fixedly connected to a side of the frame close to the unloading guide groove, and a resist block is slidably connected to the inner wall of the mounting block, and a spring is fixedly connected to one side of the resist block, and the spring is located inside the mounting block, and one end of the spring away from the resist block is fixedly connected to the inner wall of the mounting block, and one end of the resist block extends to the bottom of the guide tube, and a through hole is opened on the surface of the mounting block, and the through hole is located directly below the guide tube. After completing the tablet pressing operation, the air pump is turned off, and then the exhaust pipe suspends the exhaust operation, and the spring immediately pulls the resist block to be inserted into the mounting block, and the through hole immediately moves to directly below the guide tube, and then the unqualified tablets in the guide tube immediately slide through the through hole into the recycling bucket. After collecting a certain amount of unqualified drugs, the handle can be pulled to remove the recycling bucket, and the drugs can be scrapped or reused. The recycling device is convenient for collecting unqualified drugs and facilitating stable production of equipment.
[0012] Preferably, an exhaust port is fixedly connected to the lower surface of the mounting block, and the exhaust port is communicated with the inner wall of the mounting block.
[0013] Preferably, an exhaust pipe is fixedly connected to the output end of the air pump, one end of the exhaust pipe away from the air pump is fixedly connected to the mounting block, and the exhaust pipe is communicated with the inner wall of the mounting block.
[0014] Preferably, a bracket is fixedly connected to one side of the frame close to the unloading guide groove, a recovery bucket is placed above the bracket, a positioning rod is fixedly connected to the lower surface of the recovery bucket, one end of the positioning rod is inserted into the bracket, and a handle is fixedly connected to the surface of the recovery bucket. After completing the tablet pressing operation, the air pump is turned off, and then the exhaust pipe suspends the exhaust operation, and the spring immediately pulls the stop block to be inserted into the mounting block, and the through hole immediately moves to the bottom of the guide pipe, and then the unqualified tablets in the guide pipe immediately slide through the through hole into the recovery bucket. After collecting a certain amount of unqualified drugs, the handle can be pulled to remove the recovery bucket, and the drugs can be scrapped or reused. The recovery device is convenient for collecting unqualified drugs and facilitating stable production of the equipment.
[0015] Compared with the prior art, the advantages and positive effects of the present invention are: In the present invention, when propylthiouracil is produced and tabletted, powder is put into a feed hopper, and then the material enters a frame and performs tabletting operation, and the tablets after tabletting slide out through a feed guide groove, and during the production process, the powder is easy to accumulate in the feed hopper, and then the servo motor is turned on, and the servo motor drives the swing frame to swing back and forth, and then the swing frame hits the force block during the rotation process, and then the transmission rod is stressed and drives two groups of positioning rings and a stirring rod to vibrate, and the vibration rod immediately vibrates and disperses the powder, and through the feeding device, it is convenient to vibrate and disperse the powder, reduce the probability of powder agglomeration, ensure that the equipment is evenly loaded, reduce the weight unevenness or incompleteness of the medicine, ensure the production quality of the medicine, and reduce the economic loss of the producer.
[0016] In the present invention, when tablets are unloaded, the air pump is turned on, and the air pump inhales gas through the air suction cavity and discharges it through the exhaust pipe. The gas discharged from the exhaust pipe enters the mounting block, and then the stop block is pushed out, the spring is deformed by force, and the through hole is moved away from the bottom of the guide tube. Then the stop block blocks one end of the guide tube, and then the air pump inhales gas through the air suction cavity, the guide tube and the guide cover. When the medicines fall into other receiving containers, the medicines with incomplete appearance and other light weight are immediately sucked into the guide tube through the guide cover, and the medicines sucked into the guide tube are blocked in the guide tube by the filter screen. Through the screening device, it is convenient to screen the medicines with incomplete appearance and other light weight, reduce the subsequent manual sample inspection operation steps, improve the production efficiency of the equipment, and reduce the flow of poor quality medicines into the market.
[0017] In the present invention, after the tablet pressing operation is completed, the air pump is turned off, and then the exhaust pipe suspends the exhaust operation, and the spring then pulls the stop block to be inserted into the mounting block, and the through hole then moves to the bottom of the guide tube, and then the tablets of unqualified quality in the guide tube immediately slide through the through hole into the recovery bucket, and after a certain amount of unqualified medicines are collected, the handle can be pulled to remove the recovery bucket, and the medicines can be scrapped or reused. The recovery device facilitates the collection of unqualified medicines and facilitates the stable production of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 The present invention provides a three-dimensional structural schematic diagram of a propylthiouracil fine product preparation device; Figure 2 The present invention proposes a propylthiouracil fine product preparation device Figure 1 A schematic diagram of the structure at A; Figure 3 The present invention provides a side view schematic diagram of a propylthiouracil fine product preparation device; Figure 4 The present invention provides a schematic diagram of the structure of a device for preparing propylthiouracil from a bottom-up perspective; Figure 5 The present invention provides a schematic diagram of a top view of a device for preparing fine propylthiouracil; Figure 6 The present invention provides a schematic structural diagram of a screening device in a propylthiouracil fine product preparation device; Figure 7 The present invention proposes a propylthiouracil fine product preparation device Figure 6 Schematic diagram of the structure viewed from above; Figure 8 A partial cross-sectional view of a device for preparing fine propylthiouracil is provided in the present invention; Fig. 9 A cross-sectional view of a mounting block in a device for preparing fine propylthiouracil is provided in the present invention; Fig.10 The present invention proposes a propylthiouracil fine product preparation device Fig. 9 Schematic diagram of the explosion structure; Fig.11 The present invention provides a structural schematic diagram of a feeding device in a propylthiouracil fine product preparation device.
[0019] Legend: 1. Frame; 2. Cover; 3. Operation button; 4. Indicator light; 5. Feeding guide groove; 6. Observation window; 7. Screening device; 71. Guide cover; 72. Guide pipe; 73. Vacuum cavity; 74. Air pump; 75. Exhaust pipe; 76. Filter; 8. Recovery device; 81. Mounting block; 82. Exhaust port; 83. Recovery hopper; 84. Bracket; 85. Positioning rod; 86. Handle; 87. Block; 88. Through hole; 89. Spring; 9. Feeding device; 91. Servo motor; 92. Mounting hoop; 93. Swinging frame; 94. Force block; 95. Transmission rod; 96. Sealing ring; 97. Positioning ring; 98. Stirring rod; 10. Protective window; 11. Feeding hopper. DETAILED DESCRIPTION
[0020] See also Figure 1-11 The present invention provides a technical solution: a propylthiouracil fine product preparation device, comprising a frame 1, a screening device 7, a recovery device 8 and a feeding device 9, a cover plate 2 is installed on the surface of the frame 1, an indicator light 4 is fixedly connected to one side of the frame 1, an observation window 6 is installed on the surface of the frame 1, a protective window 10 is installed on one side of the frame 1, an operation button 3 is installed on the surface of the frame 1, two symmetrically arranged feeding hoppers 11 are fixedly connected to the upper surface of the frame 1, and a material discharge guide trough 5 is fixedly connected to one side of the frame 1; The screening device 7 is arranged on one side of the frame 1; The recovery device 8 is arranged on one side of the frame 1 close to the material discharge guide trough 5; The feeding device 9 is arranged on the upper surface of the frame 1, and one end of the feeding device 9 is inserted into the feeding hopper 11. The feeding device 9 includes a servo motor 91, and the servo motor 91 is placed above the frame 1. A mounting hoop 92 is installed on the upper surface of the frame 1, and the mounting hoop 92 is sleeved on the servo motor 91. The driving end of the servo motor 91 is fixedly connected with a swing frame 93. A transmission rod 95 is inserted into the interior of the feed hopper 11, and the swing frame 93 is sleeved on the transmission rod 95. Through the feeding device 9, it is convenient to vibrate and disperse the powder, reduce the probability of powder agglomeration, ensure uniform feeding of the equipment, reduce the uneven weight or incompleteness of the medicine, ensure the production quality of the medicine, and reduce the economic loss of the producer.
[0021] Specifically, one end of the swing frame 93 located in the feed hopper 11 is fixedly connected with a positioning ring 97, and the surface of the positioning ring 97 is fixedly connected with a stirring rod 98, and the stirring rod 98 is arranged in a vertical direction for easy alignment.
[0022] Specifically, a sealing ring 96 is fixedly connected to the inner wall of the feed hopper 11 , and the sealing ring 96 is sleeved on the transmission rod 95 .
[0023] Specifically, a force block 94 is fixedly connected to the transmission rod 95, and the force block 94 is cylindrical. The force block 94 is located inside the swing frame 93. When producing propylthiouracil for tableting, the powder is put into the feed hopper 11, and then the material enters the frame 1 and undergoes tableting. The tablets processed by the tableting slide out through the unloading guide groove 5. During the production process, the powder is easy to accumulate in the feed hopper 11. Then the servo motor 91 is turned on, and the servo motor 91 drives the swing frame 93 to swing back and forth. Then the swing frame 93 hits the force block 94 during the rotation process. Then the transmission rod 95 is stressed and drives the two sets of positioning rings 97 and the stirring rod 98 to vibrate, and the vibration rod immediately vibrates the powder to disperse it.
[0024] In this embodiment: the screening device 7 includes a guide tube 72, one end of which is fixedly connected to a material guide cover 71, the material guide cover 71 is located below the material discharge guide groove 5, and the side of the frame 1 close to the material discharge guide groove 5 is fixedly connected to an air pump 74, the input end of the air pump 74 is fixedly connected to an exhaust cavity 73, one end of the exhaust cavity 73 is fixedly connected to the guide tube 72, and the exhaust cavity 73 is communicated with the guide tube 72. Through the screening device 7, it is convenient to screen light-weight drugs with incomplete appearance, reduce the subsequent manual sample inspection operation steps, improve the production efficiency of the equipment, and reduce the flow of poor-quality drugs into the market.
[0025] Specifically, a filter screen 76 is installed at the position where the air extraction cavity 73 is connected to the guide tube 72. The filter screen 76 is placed in a vertical direction. When the tablets are unloaded, the air pump 74 is turned on, and the air pump 74 sucks gas through the air extraction cavity 73 and discharges it through the exhaust pipe 75. The gas discharged from the exhaust pipe 75 enters the mounting block 81, and then the stop block 87 is pushed out, the spring 89 is deformed by force, and the through hole 88 is moved away from the bottom of the guide tube 72. Then the stop block 87 blocks one end of the guide tube 72, and then the air pump 74 sucks gas through the vacuum cavity 73, the guide tube 72 and the guide cover. When the medicines fall into other receiving containers, the medicines with incomplete appearance and other light weight are immediately sucked into the guide tube 72 through the guide cover. The medicines sucked into the guide tube 72 are blocked in the guide tube 72 by the filter screen 76. Through the screening device 7, it is convenient to screen the medicines with incomplete appearance and other light weight, reduce the subsequent manual sample inspection operation steps, improve the production efficiency of the equipment, and reduce the flow of poor quality medicines into the market.
[0026] In this embodiment: the recovery device 8 includes a mounting block 81, the mounting block 81 is fixedly connected to one side of the frame 1 near the unloading guide groove 5, the inner wall of the mounting block 81 is slidably connected with a stop block 87, one side of the stop block 87 is fixedly connected with a spring 89, the spring 89 is located inside the mounting block 81, the end of the spring 89 away from the stop block 87 is fixedly connected to the inner wall of the mounting block 81, one end of the stop block 87 extends to the bottom of the guide tube 72, the surface of the mounting block 81 is provided with a through hole 88, the through hole 88 is located directly below the guide tube 72, and after the tableting is completed After the operation, the air pump 74 is turned off, and then the exhaust pipe 75 suspends the exhaust operation, and the spring 89 pulls the stop block 87 to be inserted into the mounting block 81, and the through hole 88 is moved to the bottom of the guide tube 72, and then the unqualified tablets in the guide tube 72 slide through the through hole 88 into the recovery bucket 83. After collecting a certain amount of unqualified drugs, the handle 86 can be pulled to remove the recovery bucket 83, and the drugs can be scrapped or reused. Through the recovery device 8, it is convenient to collect unqualified drugs and facilitate the stable production of the equipment.
[0027] Specifically, the lower surface of the mounting block 81 is fixedly connected with an exhaust port 82 , and the exhaust port 82 is communicated with the inner wall of the mounting block 81 .
[0028] Specifically, the output end of the air pump 74 is fixedly connected with an exhaust pipe 75 , one end of the exhaust pipe 75 away from the air pump 74 is fixedly connected to the mounting block 81 , and the exhaust pipe 75 is communicated with the inner wall of the mounting block 81 .
[0029] In this embodiment: a bracket 84 is fixedly connected to one side of the frame 1 close to the unloading guide groove 5, a recovery bucket 83 is placed above the bracket 84, a positioning rod 85 is fixedly connected to the lower surface of the recovery bucket 83, one end of the positioning rod 85 is inserted into the bracket 84, and a handle 86 is fixedly connected to the surface of the recovery bucket 83. After the tableting operation is completed, the air pump 74 is turned off, and then the exhaust pipe 75 suspends the exhaust operation, and the spring 89 immediately pulls the stop block 87 to be inserted into the mounting block 81, and the through hole 88 immediately moves to the bottom of the guide pipe 72, and then the unqualified tablets in the guide pipe 72 immediately slide through the through hole 88 into the recovery bucket 83. After collecting a certain amount of unqualified drugs, the handle 86 can be pulled to remove the recovery bucket 83, and the drugs can be scrapped or reused. The recovery device 8 is convenient for collecting unqualified drugs and facilitating stable production of the equipment.
[0030] Working principle: When producing propylthiouracil for tableting, the powder is put into the feed hopper 11, and then the material enters the frame 1 and is subjected to tableting. The tablets processed by the tableting slide out through the unloading guide groove 5. During the production process, the powder is easy to accumulate in the feed hopper 11, and then the servo motor 91 is turned on, and the servo motor 91 drives the swing frame 93 to swing back and forth. Then the swing frame 93 hits the force block 94 during the rotation process, and then the transmission rod 95 is stressed and drives the two sets of positioning rings 97 and the stirring rod 98 to vibrate, and the vibration rod immediately vibrates and disperses the powder , through the feeding device 9, it is convenient to vibrate and disperse the powder, reduce the probability of powder agglomeration, ensure uniform feeding of the equipment, reduce the uneven weight or incompleteness of the medicine, ensure the production quality of the medicine, and reduce the economic loss of the producer. When the tablets are unloaded, turn on the air pump 74, the air pump 74 inhales the gas through the suction cavity 73 and discharges it through the exhaust pipe 75, the gas discharged from the exhaust pipe 75 enters the mounting block 81, and then the block 87 is pushed out, the spring 89 is deformed by force, the through hole 88 is moved away from the bottom of the guide pipe 72, and then the block 87 is pushed out. The block 87 blocks one end of the guide tube 72, and then the air pump 74 sucks gas through the air extraction cavity 73, the guide tube 72 and the guide cover. When the medicine falls to other receiving containers, the medicine with incomplete appearance and other light weight is immediately sucked into the guide tube 72 through the guide cover. The medicine sucked into the guide tube 72 is blocked in the guide tube 72 by the filter screen 76. Through the screening device 7, it is convenient to screen the medicine with incomplete appearance and other light weight, reduce the subsequent manual sample inspection operation steps, improve the production efficiency of the equipment, and reduce the flow of poor quality medicines into the market. After completing the tableting operation, the air pump 74 is turned off, and then the exhaust pipe 75 suspends the exhaust operation, and the spring 89 then pulls the stop block 87 to be inserted into the mounting block 81, and the through hole 88 then moves to the bottom of the guide tube 72, and then the unqualified tablets in the guide tube 72 immediately slide through the through hole 88 into the recovery bucket 83. After collecting a certain amount of unqualified drugs, the handle 86 can be pulled to remove the recovery bucket 83, and the drugs can be scrapped or reused. Through the recovery device 8, it is convenient to collect unqualified drugs and facilitate stable production of the equipment.
Claims
1. A device for preparing fine propylthiouracil, comprising a frame (1), a screening device (7), a recovery device (8) and a feeding device (9), characterized in that: A cover plate (2) is installed on the surface of the frame (1), an indicator light (4) is fixedly connected to one side of the frame (1), an observation window (6) is installed on the surface of the frame (1), a protective window (10) is installed on one side of the frame (1), an operation button (3) is installed on the surface of the frame (1), two symmetrically arranged feed hoppers (11) are fixedly connected to the upper surface of the frame (1), and a material discharge guide groove (5) is fixedly connected to one side of the frame (1); The screening device (7) is arranged on one side of the frame (1); The recovery device (8) is arranged on a side of the frame (1) close to the material discharge guide groove (5); The feeding device (9) is arranged on the upper surface of the frame (1), one end of the feeding device (9) is inserted into the feeding hopper (11), the feeding device (9) comprises a servo motor (91), the servo motor (91) is arranged above the frame (1), a mounting hoop (92) is installed on the upper surface of the frame (1), the mounting hoop (92) is sleeved on the servo motor (91), a driving end of the servo motor (91) is fixedly connected to a swing frame (93), a transmission rod (95) is inserted into the interior of the feeding hopper (11), and the swing frame (93) is sleeved on the transmission rod (95).
2. A device for preparing propylthiouracil fine product according to claim 1, characterized in that: One end of the swing frame (93) located in the feed hopper (11) is fixedly connected to a positioning ring (97), and a stirring rod (98) is fixedly connected to the surface of the positioning ring (97), and the stirring rod (98) is arranged in a vertical direction.
3. A device for preparing propylthiouracil fine product according to claim 1, characterized in that: A sealing ring (96) is fixedly connected to the inner wall of the feed hopper (11), and the sealing ring (96) is sleeved on the transmission rod (95).
4. The device for preparing propylthiouracil according to claim 1, characterized in that: A force-bearing block (94) is fixedly connected to the transmission rod (95); the force-bearing block (94) is cylindrical and is located inside the swing frame (93).
5. The device for preparing propylthiouracil according to claim 1, characterized in that: The screening device (7) comprises a flow guide pipe (72), one end of the flow guide pipe (72) is fixedly connected to a material guide cover (71), the material guide cover (71) is located below the material discharge guide groove (5), a side of the frame (1) close to the material discharge guide groove (5) is fixedly connected to an air pump (74), an input end of the air pump (74) is fixedly connected to an air extraction cavity (73), one end of the air extraction cavity (73) is fixedly connected to the flow guide pipe (72), and the air extraction cavity (73) is communicated with the flow guide pipe (72).
6. The device for preparing propylthiouracil according to claim 5, characterized in that: A filter screen (76) is installed at a position where the air extraction cavity (73) communicates with the flow guide pipe (72), and the filter screen (76) is placed in a vertical direction.
7. The device for preparing propylthiouracil according to claim 5, characterized in that: The recovery device (8) comprises a mounting block (81), wherein the mounting block (81) is fixedly connected to a side of the frame (1) close to the material discharge guide groove (5), and a stop block (87) is slidably connected to the inner wall of the mounting block (81), and a spring (89) is fixedly connected to one side of the stop block (87), and the spring (89) is located inside the mounting block (81), and one end of the spring (89) away from the stop block (87) is fixedly connected to the inner wall of the mounting block (81), and one end of the stop block (87) extends to the bottom of the guide pipe (72), and a through hole (88) is opened on the surface of the mounting block (81), and the through hole (88) is located directly below the guide pipe (72).
8. The device for preparing propylthiouracil according to claim 7, characterized in that: An exhaust port (82) is fixedly connected to the lower surface of the mounting block (81), and the exhaust port (82) is in communication with the inner wall of the mounting block (81).
9. The device for preparing propylthiouracil according to claim 7, characterized in that: An exhaust pipe (75) is fixedly connected to the output end of the air pump (74), one end of the exhaust pipe (75) away from the air pump (74) is fixedly connected to the mounting block (81), and the exhaust pipe (75) is in communication with the inner wall of the mounting block (81).
10. The device for preparing propylthiouracil according to claim 1, characterized in that: A bracket (84) is fixedly connected to one side of the frame (1) close to the material discharge guide groove (5), a recovery bucket (83) is placed above the bracket (84), a positioning rod (85) is fixedly connected to the lower surface of the recovery bucket (83), one end of the positioning rod (85) is inserted into the bracket (84), and a handle (86) is fixedly connected to the surface of the recovery bucket (83).