A drying device for purified heparin sodium

Abstract

The present invention relates to the field of sodium heparin drying, and in particular to a drying device for sodium heparin after purification. The technical problem is that the existing drying method has the disadvantages that sodium heparin is not heated evenly enough and has low drying efficiency. A drying device for sodium heparin after purification includes a bracket, a coupling frame, a lower cylinder, a hot air blower, a servo motor, a transmission assembly, etc.; the upper part of the bracket is rotatably connected to the coupling frame, the lower cylinder is fixedly connected to the coupling frame, the bottom of the lower cylinder is fixedly connected to the hot air blower, and two servo motors are fixedly connected to the lower part of the bracket, and a transmission assembly is provided between the output shafts of the two servo motors and the coupling frame. The sodium heparin is driven to rotate by the mesh plate, so that the sodium heparin is heated more evenly, so that the hot air blower can dry the sodium heparin more fully, thereby improving the drying efficiency. The mesh plate is intermittently moved up and down, so that the mesh plate intermittently tosses the sodium heparin, so that the sodium heparin is heated more fully, and the drying efficiency of the sodium heparin is further improved.

Description

Technical Field

[0001] The invention relates to the field of sodium heparin drying, and in particular to a drying device used for purified sodium heparin. Background Art

[0002] Heparin sodium is an anticoagulant that can interfere with many links of the blood coagulation process and has an anticoagulant effect both in vivo and in vitro. Heparin sodium is generally extracted from the pig small intestinal mucosa or liver. During the extraction process, the heparin sodium needs to be purified and then dried.

[0003] At present, sodium heparin is usually dried by high-temperature drying with a hot air blower. During the drying process, sodium heparin is easy to accumulate, and the parts of sodium heparin that are in contact with each other are difficult to be fully heated. In addition, the sodium heparin close to the air outlet of the hot air blower is heated more, and this part of sodium heparin dries faster, while the sodium heparin far from the air outlet of the hot air blower is heated less, and the drying speed of this part of sodium heparin is slower, which will cause the sodium heparin to be heated unevenly and the drying efficiency to be low. Summary of the invention

[0004] In order to solve the shortcomings of the existing drying method that the sodium heparin is not heated uniformly and the drying efficiency is low, the present invention provides a drying device for purified sodium heparin, which can heat the sodium heparin more fully and evenly and improve the drying efficiency.

[0005] A drying device for purified sodium heparin comprises a bracket, a coupling frame, a lower cylinder, a hot air blower, a servo motor, a transmission assembly, a discharging mechanism, a drying mechanism and a shaking mechanism. The upper part of the bracket is rotatably connected with the coupling frame, the lower cylinder is fixedly connected in the coupling frame, the bottom of the lower cylinder is fixedly connected with the hot air blower, two servo motors are fixedly connected to the lower part of the bracket, a transmission assembly is arranged between the output shafts of the two servo motors and the coupling frame, a discharging mechanism is arranged on the coupling frame, a drying mechanism is arranged on the discharging mechanism, a shaking mechanism is arranged on the drying mechanism, the shaking mechanism is connected to the lower cylinder, the drying mechanism is used to dry the sodium heparin, the discharging mechanism is convenient for discharging the dried sodium heparin, and the shaking mechanism can make the sodium heparin be heated more fully, thereby improving the drying efficiency of the sodium heparin.

[0006] To further explain, the transmission assembly includes a driving pulley, a passive pulley and a transmission belt. The output shafts of the two servo motors are each provided with a driving pulley, the coupling frame is provided with two passive pulleys, and a transmission belt is wound between the passive pulley and the driving pulley.

[0007] Further explanation: the discharging mechanism includes a guide rail, an upper cylinder, a cover cylinder and an arc-shaped cover. A guide rail is provided on the top of the lower cylinder, an upper cylinder is provided on the top of the guide rail, a cover cylinder is provided on the top of the upper cylinder, an arc-shaped cover is rotatably connected to the cover cylinder, and the arc-shaped cover is in contact with the top of the upper cylinder.

[0008] Further description, an air outlet is provided on the cover tube.

[0009] To further explain, the drying mechanism includes an electric slider, a rotating cylinder, a sliding plate, a sliding cylinder, a mesh plate and a spring. A plurality of electric sliders are slidably connected in the guide rail. A rotating cylinder is provided between the plurality of electric sliders. The rotating cylinder is located in the upper cylinder body. Two sliding plates are slidably connected in the rotating cylinder. A sliding cylinder is fixedly connected between the two sliding plates. The sliding cylinder is located in the rotating cylinder. A mesh plate is fixedly connected to the bottom of the sliding cylinder. The mesh plate is located directly above the hot air blower. Springs are connected between the two sliding plates and the rotating cylinder.

[0010] To further explain, the shaking mechanism includes a vertical plate, a roller, a fixed cylinder and a convex plate. The bottoms of the two sliding plates are fixedly connected to the vertical plates. The lower parts of the two vertical plates are rotatably connected to the rollers. The inner wall of the lower cylinder is fixedly connected to the fixed cylinder, and four convex plates are provided on the fixed cylinder.

[0011] To further explain, the convex plate is provided with a curved surface and a vertical plane.

[0012] Further description, it also includes a pushing mechanism, which is arranged at the bottom of the rotating cylinder. The pushing mechanism includes a connecting frame, an annular frame and a pushing rod. Two connecting frames are fixedly connected to the bottom of the rotating cylinder, and an annular frame is fixedly connected between the two connecting frames. A number of pushing rods are arranged on the annular frame, and the several pushing rods are all located below the mesh plate.

[0013] Further description, it also includes a scraping mechanism, which is arranged in the rotating cylinder. The scraping mechanism includes a vertical rod and a scraping ring. Four vertical rods are arranged on the inner wall of the rotating cylinder, and a scraping ring is arranged between the bottom ends of the four vertical rods. The lower parts of the four vertical rods and the scraping ring are in contact with the inner wall of the sliding cylinder.

[0014] Further description, it also includes a connecting rod and a scraper plate. The cover tube is fixedly connected with the connecting rod, and the bottom end of the connecting rod is fixedly connected with a plurality of scraper plates, and each scraper plate is in contact with the top of the mesh plate.

[0015] Compared with the prior art, the present invention has the following advantages: 1. A worker starts the hot air blower and the electric slider, the hot air blower dries the sodium heparin, the electric slider drives the rotating cylinder, the sliding plate, the sliding cylinder and the mesh plate to rotate along the guide rail, the mesh plate drives the sodium heparin to rotate, so that the sodium heparin is heated more evenly, so that the hot air blower can dry the sodium heparin more fully, and the drying efficiency is improved. The rotation of the sliding plate drives the vertical plate and the roller to rotate, and the arc surface on the convex plate squeezes the roller, so that the roller and the vertical plate move downward, and the vertical plate drives the sliding plate, the mesh plate and the sliding cylinder to move downward, and then the sliding spring will reset and drive the sliding plate, the vertical plate and the roller to move upward, and so on and so forth, so that the mesh plate intermittently moves up and down, so that the mesh plate intermittently tosses the sodium heparin, so that the sodium heparin is more fully heated, and the drying efficiency of the sodium heparin is further improved.

[0016] 2. When the mesh plate moves downward, the push rod will penetrate into the mesh holes of the mesh plate, so that the push rod pushes the sodium heparin on the mesh plate, thereby increasing the gaps of the sodium heparin on the mesh plate, allowing hot air to enter the gaps of the sodium heparin more fully, so that the sodium heparin is heated more fully, and the drying efficiency of the sodium heparin is further improved. At the same time, the push rod can push out the sodium heparin that is blocked on the mesh plate, thereby reducing the blockage of the mesh plate.

[0017] 3. When the mesh plate moves upward, it contacts the scraper plate and the mesh plate continues to rotate. The scraper plate can scrape the sodium heparin at the bottom of the mesh plate upward, stirring the sodium heparin on the mesh plate, so that the sodium heparin on the mesh plate is heated more evenly and can be dried more evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the discharging mechanism of the present invention.

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the coupling frame, the lower cylinder and the discharging mechanism of the present invention.

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the shaking mechanism and the pushing mechanism of the present invention.

[0021] Figure 4 It is a schematic diagram of the split three-dimensional structure of the discharging mechanism of the present invention.

[0022] Figure 5 It is a partial cross-sectional three-dimensional structural schematic diagram of the discharging mechanism and the drying mechanism of the present invention.

[0023] Figure 6 It is a partial cross-sectional three-dimensional structural schematic diagram of the drying mechanism and the shaking mechanism of the present invention.

[0024] Figure 7 It is a schematic diagram of the cross-sectional three-dimensional structure of the rotating drum of the present invention.

[0025] Figure 8 It is a schematic diagram of the split three-dimensional structure of the drying mechanism and the shaking mechanism of the present invention.

[0026] Fig. 9 It is a schematic diagram of the sectional and split three-dimensional structure of the fixing cylinder and the convex plate of the present invention.

[0027] Fig.10 It is a schematic cross-sectional three-dimensional structural diagram of the drying mechanism and the scraping mechanism of the present invention.

[0028] Fig.11 It is a schematic diagram of the split three-dimensional structure of the drying mechanism and the pushing mechanism of the present invention.

[0029] In the above drawings: 1: bracket, 2: coupling frame, 3: lower cylinder, 4: hot air blower, 5: servo motor, 6: transmission assembly, 71: guide rail, 72: upper cylinder, 73: cover cylinder, 74: arc cover, 81: electric slider, 82: rotating cylinder, 83: sliding plate, 84: sliding cylinder, 85: mesh plate, 86: spring, 91: vertical plate, 92: roller, 921: fixed cylinder, 93: convex plate, 101: connecting frame, 102: annular frame, 103: top rod, 111: vertical rod, 112: scraper ring, 12: connecting rod, 13: scraper plate. DETAILED DESCRIPTION

[0030] The present invention will now be described more fully below with reference to the accompanying drawings, in which currently preferred embodiments of the present invention are shown. However, the present invention may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and these embodiments fully convey the scope of the present invention to the skilled person.

[0031] Example 1: A drying device for purified heparin sodium, such as Figure 1-Figure 9 As shown, it includes a bracket 1, a coupling frame 2, a lower cylinder 3, a hot air blower 4, a servo motor 5, a transmission assembly 6, a discharging mechanism, a drying mechanism and a shaking mechanism. The upper part of the bracket 1 is rotatably connected to the coupling frame 2, the lower cylinder 3 is fixedly connected to the coupling frame 2, and the bottom of the lower cylinder 3 is fixedly connected to the hot air blower 4, and the hot air blower 4 is used to dry heparin sodium. Two servo motors 5 are fixedly connected to the lower part of the bracket 1, and a transmission assembly 6 is provided between the output shafts of the two servo motors 5 and the coupling frame 2. A discharging mechanism is provided on the coupling frame 2, and a drying mechanism is provided on the discharging mechanism. A shaking mechanism is provided on the drying mechanism, and the shaking mechanism is connected to the lower cylinder 3. The drying mechanism is used to dry heparin sodium. The discharging mechanism is convenient for discharging the dried heparin sodium. The shaking mechanism can make the heparin sodium more fully heated, thereby improving the drying efficiency of the heparin sodium.

[0032] The transmission assembly 6 includes a driving pulley, a passive pulley and a transmission belt. The output shafts of the two servo motors 5 are each provided with a driving pulley, and the coupling frame 2 is provided with two passive pulleys. A transmission belt is wound between the passive pulley and the driving pulley.

[0033] The discharging mechanism includes a guide rail 71, an upper cylinder 72, a cover cylinder 73 and an arc-shaped cover 74. A guide rail 71 is provided on the top of the lower cylinder 3, an upper cylinder 72 is provided on the top of the guide rail 71, a cover cylinder 73 is provided on the top of the upper cylinder 72, an arc-shaped cover 74 is rotatably connected to the cover cylinder 73, the arc-shaped cover 74 is in contact with the top of the upper cylinder 72, and the arc-shaped cover 74 can be opened.

[0034] An air outlet is provided on the cover tube 73, and the air outlet on the cover tube 73 is used to discharge hot air.

[0035] The drying mechanism includes an electric slider 81, a rotating cylinder 82, a sliding plate 83, a sliding cylinder 84, a mesh plate 85 and a spring 86. A plurality of electric sliders 81 are slidably connected in the guide rail 71. A rotating cylinder 82 is provided between the plurality of electric sliders 81. The rotating cylinder 82 is located in the upper cylinder body 72. Two sliding plates 83 are slidably connected in the rotating cylinder 82. The sliding plates 83 are vertically arranged. A sliding cylinder 84 is fixedly connected between the two sliding plates 83. The sliding cylinder 84 is located in the rotating cylinder 82. A mesh plate 85 is fixedly connected to the bottom of the sliding cylinder 84. The mesh plate 85 is used for placing sodium heparin. The mesh plate 85 is located directly above the hot air blower 4. Springs 86 are connected between the two sliding plates 83 and the rotating cylinder 82.

[0036] The shaking mechanism includes a vertical plate 91, a roller 92, a fixed cylinder 921 and a convex plate 93. The bottoms of the two sliding plates 83 are fixedly connected to the vertical plates 91. The lower parts of the two vertical plates 91 are rotatably connected to the rollers 92. The inner wall of the lower cylinder 3 is fixedly connected to the fixed cylinder 921, and four convex plates 93 are provided on the fixed cylinder 921.

[0037] The convex plate 93 is provided with an arc surface and a vertical plane, and the roller 92 contacts the arc surface of the convex plate 93 .

[0038] First, the worker rotates the arc cover 74 to open the arc cover 74, and then pours the purified heparin sodium onto the mesh plate 85, and then closes the arc cover 74, starts the hot air blower 4 and the electric slider 81, and the hot air blower 4 dries the heparin sodium, and the hot air is discharged through the air outlet of the cover cylinder 73, and the electric slider 81 drives the rotating cylinder 82, the sliding plate 83, the sliding cylinder 84 and the mesh plate 85 to rotate along the guide rail 71, and the mesh plate 85 drives the heparin sodium to rotate, so that the heparin sodium is heated more evenly, so that the hot air blower 4 can dry the heparin sodium more fully and improve the drying efficiency, and the rotation of the sliding plate 83 drives the vertical plate 91 and the roller 92 to rotate, and the roller 92 contacts the curved surface on the convex plate 93, and the curved surface on the convex plate 93 squeezes the roller 92, so that The roller 92 and the vertical plate 91 move downward, the vertical plate 91 drives the sliding plate 83, the mesh plate 85 and the sliding cylinder 84 to move downward, and then the sliding plate 83 drives the vertical plate 91 and the roller 92 to continue to rotate, the roller 92 will be out of contact with the arc surface on the convex plate 93, the roller 92 contacts the vertical plane on the convex plate 93, the arc surface on the convex plate 93 no longer squeezes the roller 92, the spring 86 will reset and drive the sliding plate 83, the vertical plate 91 and the roller 92 to move upward, the sliding plate 83 moves upward and drives the mesh plate 85 and the sliding cylinder 84 to move upward, and so on and so forth, so that the mesh plate 85 moves up and down intermittently, so that the mesh plate 85 intermittently tosses the heparin sodium, so that the heparin sodium is more fully heated, and the drying efficiency of the heparin sodium is further improved. When drying is completed, the worker starts the servo motor 5, and the servo motor 5 drives the transmission assembly 6 to rotate through the output shaft, and the transmission assembly 6 drives the coupling frame 2 to rotate, and the coupling frame 2 drives the lower cylinder 3, the hot air blower 4, the guide rail 71, the upper cylinder 72, the cover cylinder 73, the arc cover 74, the electric slider 81, the rotating cylinder 82, the sliding plate 83, the sliding cylinder 84 and the mesh plate 85 to rotate one hundred and twenty degrees, so that the cover cylinder 73 and the arc cover 74 are tilted downward, with the cover cylinder 73 on the top and the arc cover 74 on the bottom, and then the worker opens the arc cover 74 again to pour out the sodium heparin on the mesh plate 85, which is convenient for the worker to collect.

[0039] Embodiment 2: Based on embodiment 1, Figure 10-11 As shown, it also includes a pushing mechanism, which is arranged at the bottom of the rotating cylinder 82. The pushing mechanism includes a connecting frame 101, an annular frame 102 and a push rod 103. Two connecting frames 101 are fixedly connected to the bottom of the rotating cylinder 82, and an annular frame 102 is fixedly connected between the two connecting frames 101. A plurality of push rods 103 are arranged on the annular frame 102. The plurality of push rods 103 are all located below the mesh plate 85. The push rods 103 are used to push out the heparin sodium blocked on the mesh plate 85.

[0040] When the mesh plate 85 moves downward, the push rod 103 will penetrate into the mesh of the mesh plate 85, so that the push rod 103 pushes the heparin sodium on the mesh plate 85, thereby increasing the gap of the heparin sodium on the mesh plate 85, allowing hot air to enter the gap of the heparin sodium more fully, so that the heparin sodium is heated more fully, and the drying efficiency of the heparin sodium is further improved. At the same time, the push rod 103 can push out the heparin sodium blocked on the mesh plate 85, thereby reducing the blockage of the mesh plate 85. When the mesh plate 85 moves upward, the mesh plate 85 is separated from the push rod 103.

[0041] Embodiment 3: Based on embodiment 2, Figure 10-11 As shown, a scraping mechanism is also included. The scraping mechanism is arranged in the rotating cylinder 82. The scraping mechanism includes a vertical rod 111 and a scraping ring 112. Four vertical rods 111 are arranged on the inner wall of the rotating cylinder 82. A scraping ring 112 is arranged between the bottom ends of the four vertical rods 111. The lower parts of the four vertical rods 111 and the scraping ring 112 are in contact with the inner wall of the sliding cylinder 84. The vertical rods 111 and the scraping ring 112 are used to scrape off the residual heparin sodium on the inner wall of the sliding cylinder 84.

[0042] When the sliding cylinder 84 moves downward, the scraper ring 112 contacts the inner wall of the sliding cylinder 84, and the scraper ring 112 can scrape off the sodium heparin on the inner wall of the sliding cylinder 84. At the same time, the sliding cylinder 84 will rotate, and the vertical rod 111 can assist the scraper ring 112 to scrape off the sodium heparin on the inner wall of the sliding cylinder 84, thereby reducing the residual sodium heparin on the inner wall of the sliding cylinder 84 and facilitating the subsequent drying of the sodium heparin.

[0043] Embodiment 4: Based on the embodiment 3, Figure 10-11 As shown, it also includes a connecting rod 12 and a scraper plate 13. The connecting rod 12 is fixedly connected in the cover tube 73, and a plurality of scraper plates 13 are fixedly connected to the bottom end of the connecting rod 12. Each scraper plate 13 is in contact with the top of the mesh plate 85. The scraper plate 13 is used to stir the sodium heparin on the mesh plate 85 so that the sodium heparin on the mesh plate 85 is heated more evenly.

[0044] When the mesh plate 85 moves upward, the mesh plate 85 contacts the scraper plate 13, and the mesh plate 85 continues to rotate. The scraper plate 13 can scrape the sodium heparin on the bottom of the mesh plate 85 upward, stirring the sodium heparin on the mesh plate 85, so that the sodium heparin on the mesh plate 85 is heated more evenly, and the sodium heparin can be dried more evenly. When the mesh plate 85 moves downward, the mesh plate 85 separates from the scraper plate 13.

[0045] While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.

Claims

1. A drying device for purified heparin sodium, characterized in that: The invention comprises a support (1), a coupling frame (2), a lower cylinder (3), a hot air blower (4), a servo motor (5), a transmission assembly (6), a discharging mechanism, a drying mechanism and a shaking mechanism. The upper part of the support (1) is rotatably connected to the coupling frame (2), the lower cylinder (3) is fixedly connected inside the coupling frame (2), the bottom of the lower cylinder (3) is fixedly connected to the hot air blower (4), the lower part of the support (1) is fixedly connected to two servo motors (5), the output shafts of the two servo motors (5) and the coupling frame (2) are each provided with a transmission assembly (6), the coupling frame (2) is provided with a discharging mechanism, the discharging mechanism is provided with a drying mechanism, the shaking mechanism is provided on the drying mechanism, the shaking mechanism is connected to the lower cylinder (3), a guide rail (71) is provided at the top of the lower cylinder (3), and an upper cylinder (72) is provided at the top of the guide rail (71); The drying mechanism comprises an electric slider (81), a rotating cylinder (82), a sliding plate (83), a sliding cylinder (84), a screen (85) and a spring (86); a plurality of electric sliders (81) are slidably connected in the guide rail (71); a rotating cylinder (82) is arranged between the plurality of electric sliders (81); the rotating cylinder (82) is located in the upper cylinder body (72); two sliding plates (83) are slidably connected in the rotating cylinder (82); a sliding cylinder (84) is fixedly connected between the two sliding plates (83); the sliding cylinder (84) is located in the rotating cylinder (82); a screen (85) is fixedly connected to the bottom of the sliding cylinder (84); the screen (85) is located directly above the hot air blower (4); and springs (86) are connected between the two sliding plates (83) and the rotating cylinder (82); The shaking mechanism comprises a vertical plate (91), a roller (92), a fixed cylinder (921) and a convex plate (93); the bottoms of the two sliding plates (83) are fixedly connected to the vertical plates (91); the lower parts of the two vertical plates (91) are rotatably connected to the roller (92); the inner wall of the lower cylinder (3) is fixedly connected to the fixed cylinder (921); and four convex plates (93) are provided on the fixed cylinder (921); The convex plate (93) is provided with a curved surface and a vertical plane; The electric slider (81) drives the rotating cylinder (82), the sliding plate (83), the sliding cylinder (84) and the screen (85) to rotate along the guide rail (71). The rotation of the sliding plate (83) drives the vertical plate (91) and the roller (92) to rotate. The roller (92) contacts the arc surface on the convex plate (93). The arc surface on the convex plate (93) squeezes the roller (92), so that the roller (92) and the vertical plate (91) move downward. The vertical plate (91) drives the sliding plate (83), the screen (85) and the sliding cylinder (84) to move downward, and then the sliding cylinder (84) moves downward. The plate (83) drives the vertical plate (91) and the roller (92) to continue rotating, the roller (92) will be out of contact with the arc surface on the convex plate (93), the roller (92) will be in contact with the vertical plane on the convex plate (93), the arc surface on the convex plate (93) will no longer squeeze the roller (92), the spring (86) will reset and drive the sliding plate (83), the vertical plate (91) and the roller (92) to move upward, the sliding plate (83) moves upward and drives the screen plate (85) and the sliding cylinder (84) to move upward, and so on and so forth, so that the screen plate (85) moves up and down intermittently.

2. A drying device for purified heparin sodium according to claim 1, characterized in that: The transmission assembly (6) comprises a driving pulley, a passive pulley and a transmission belt. The output shafts of the two servo motors (5) are each provided with a driving pulley. The coupling frame (2) is provided with two passive pulleys. A transmission belt is wound between the passive pulley and the driving pulley.

3. A drying device for purified heparin sodium according to claim 1, characterized in that: The discharging mechanism comprises a guide rail (71), an upper cylinder (72), a cover cylinder (73) and an arc-shaped cover (74). The top of the upper cylinder (72) is provided with a cover cylinder (73). The cover cylinder (73) is rotatably connected with the arc-shaped cover (74). The arc-shaped cover (74) contacts the top of the upper cylinder (72).

4. A drying device for purified heparin sodium according to claim 3, characterized in that: The cover cylinder (73) is provided with an air outlet.

5. A drying device for purified heparin sodium according to claim 4, characterized in that: The device also includes a push mechanism, which is arranged at the bottom of the rotating cylinder (82). The push mechanism includes a connecting frame (101), an annular frame (102) and a push rod (103). The bottom of the rotating cylinder (82) is fixedly connected to two connecting frames (101), an annular frame (102) is fixedly connected between the two connecting frames (101), and a plurality of push rods (103) are arranged on the annular frame (102). The plurality of push rods (103) are all located below the mesh plate (85).

6. A drying device for purified heparin sodium according to claim 5, characterized in that: The device also includes a scraping mechanism, which is arranged in the rotating cylinder (82) and includes a vertical rod (111) and a scraping ring (112). Four vertical rods (111) are arranged on the inner wall of the rotating cylinder (82), and a scraping ring (112) is arranged between the bottom ends of the four vertical rods (111). The lower parts of the four vertical rods (111) and the scraping ring (112) are in contact with the inner wall of the sliding cylinder (84).

7. A drying device for purified heparin sodium according to claim 6, characterized in that: It also includes a connecting rod (12) and a scraper plate (13). The cover tube (73) is fixedly connected with the connecting rod (12). The bottom end of the connecting rod (12) is fixedly connected with a plurality of scraper plates (13). Each scraper plate (13) is in contact with the top of the mesh plate (85).

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