Vertical boiling dryer for tablet production

Abstract

The utility model relates to the field of tablet production, in particular to a vertical boiling dryer for tablet production, which comprises a rack, a vertical thermal insulation box mounted at the upper end of the rack, a material receiving box connected with one end of the rack in a sliding manner, and a drying mechanism. When the device works, the driving structure can drive the drying cylinder to rotate, tablets roll in the drying cylinder through the gravity of the tablets, meanwhile, through threaded connection between a pushing ring frame and a middle-section screw rod and sliding connection between the pushing ring frame and a guide rod, after the drying cylinder rotates, the pushing ring frame can rotate along with the drying cylinder, and the tablets roll in the drying cylinder; in this way, a material pushing ring frame pushes tablets in the drying cylinder to slowly move towards one end of the drying cylinder, after an ejector rod ejects a baffle, the baffle is ejected open through sliding connection of the baffle and a guide rod, and therefore the material pushing ring frame can push the tablets out of the drying cylinder, and discharging treatment is achieved; in this way, materials can be rapidly discharged no matter what direction the drying cylinder rotates to, and therefore the discharging efficiency of the device is higher and more effective.

Description

Technical Field

[0001] The utility model relates to the field of tablet production, in particular to a vertical fluidized bed dryer for tablet production. Background Art

[0002] Tablets are solid preparations in the form of tablets or special-shaped tablets pressed from a uniform mixture of drugs and excipients. Oral ordinary tablets are the main type, and there are also buccal tablets, sublingual tablets, oral patches, chewable tablets, dispersible tablets, effervescent tablets, vaginal tablets, immediate-release or sustained-release or controlled-release tablets, enteric-coated tablets, etc.

[0003] After retrieving the patent document with the publication number CN214426343U, this patent document discloses "a vertical fluidized bed dryer for tablet production. When drying an object, this device inserts the feed bin into the rotating chamber through a spring cover plate, places the object into the interior of the rotating chamber through the feed bin, and then the spring cover plate returns to its original position through the spring. After powering on the machine, the motor drives the rotating chamber to rotate through the rotating shaft, rotates the object inside the rotating chamber, so that the object can be evenly dried, thereby improving the drying efficiency, and thus increasing the practicability of this dryer.";

[0004] However, after the above device dries the tablets, the tablets need to be discharged through the discharge port at the lower end of the rotating chamber. But this requires the discharge port of the rotating chamber to be at the lower end for discharging, which makes it difficult for the continuously rotating rotating chamber to perform continuous discharging, resulting in a slower discharging efficiency of the above device. Content of the Utility Model

[0005] The purpose of the present utility model is to provide a vertical fluidized bed dryer for tablet production to solve the above problems.

[0006] The present utility model realizes the above purpose through the following technical solutions:

[0007] A vertical fluidized bed dryer for tablet production includes a bench, a vertical heat insulation box is installed at the upper end of the bench, a receiving box is slidably connected to one end of the bench, and further includes a drying mechanism;

[0008] The drying mechanism includes a middle section screw, which is fixed inside a vertical heat-insulating box. A side plate is rotatably connected to the periphery of the middle section screw. One end of the side plate is rotatably connected to a drying cylinder. Guide rods are fixed at the four quadrant points on the inner wall of the drying cylinder. One end of the side plate is fixed with a feed pipe, and a feed hopper is fixed at the upper end of the feed pipe. A pushing ring frame is arranged on one side of the side plate. The pushing ring frame is threadedly connected to the middle section screw and is slidably connected to the guide rods. Multiple ejector rods are fixed at one end of the pushing ring frame. A baffle is arranged at one end of the drying cylinder and is slidably connected to the guide rods. A plurality of fixing blocks are fixed on the outer wall of the drying cylinder, and a spring is fixed between each fixing block and the baffle. A driving structure is installed at the rear end of the drying cylinder.

[0009] Preferably: The length of the drying cylinder is the same as the length of the threaded section of the middle section screw, and a plurality of through holes are provided on the wall of the drying cylinder.

[0010] Preferably: The driving structure includes a mounting plate, which is fixed at the rear end of the vertical heat-insulating box. A motor is installed at the upper end of the mounting plate, and a transmission structure is installed between the output shaft of the motor and the drying cylinder.

[0011] Preferably: The transmission structure is composed of a sprocket, a sprocket ring and a chain meshing on its periphery. The sprocket of the transmission structure is fixed on the output shaft of the motor, and the sprocket ring of the transmission structure is fixed on the outer ring of the drying cylinder.

[0012] Preferably: A front door is installed at the front end of the vertical heat-insulating box, an observation plate is fixed in the middle of the front door, an electric heating rack is installed at the bottom of the middle section screw, a discharge channel is fixed at the lower end of the vertical heat-insulating box, and a plug board is slidably connected to the bottom of the discharge channel.

[0013] Preferably: The observation plate is made of a transparent material, and a through groove is provided at the front end of the plug board.

[0014] The beneficial effects compared with the prior art are as follows:

[0015] When the device is operating, the driving structure will drive the drying cylinder to rotate, so that the tablets will roll inside the drying cylinder by their own gravity. At the same time, through the threaded connection between the pushing ring frame and the middle section screw and the sliding connection between the pushing ring frame and the guide rods, when the drying cylinder rotates, the pushing ring frame can be driven to rotate accordingly. In this way, the pushing ring frame will push the tablets inside the drying cylinder to move slowly towards one end of the drying cylinder. When the ejector rods push against the baffle, the baffle will be pushed open through the sliding connection between the baffle and the guide rods, so that the pushing ring frame can push the tablets out of the drying cylinder, thus realizing the discharging process. In this way, the drying cylinder can discharge quickly no matter which orientation it rotates to, making the discharging efficiency of the device faster and more effective. After the device completely discharges the tablets, the driving structure can drive the drying cylinder to rotate in reverse, so that the pushing ring frame is reset. At the same time, the pulling force of the spring rebound can reset the baffle to cope with subsequent operations. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic structural diagram of a vertical fluidized bed dryer for tablet production according to the present invention;

[0018] Figure 2 It is a schematic structural diagram of a vertical heat insulation box of a vertical fluidized bed dryer for tablet production according to the present invention;

[0019] Figure 3 It is a schematic structural diagram of a drying mechanism of a vertical fluidized bed dryer for tablet production according to the present invention;

[0020] Figure 4 It is a partial schematic structural diagram of a drying mechanism of a vertical fluidized bed dryer for tablet production according to the present invention.

[0021] The description of the reference numerals is as follows:

[0022] 1, bench; 11, base; 12, fixing bolt; 2, vertical heat insulation box; 21, front door; 22, observation plate; 23, electric heating rack; 24, discharge channel; 25, plug board; 3, middle section screw; 31, side plate; 32, drying cylinder; 33, guide rod; 34, feed pipe; 35, feed hopper; 36, pushing ring frame; 37, ejector rod; 38, baffle; 39, fixing block; 310, spring; 311, mounting plate; 312, motor; 313, transmission structure; 4, receiving box. Detailed implementation manners

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise stated, the meaning of "a plurality" is two or more.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

[0025] The present utility model will be further described below with reference to the drawings:

[0026] As Figures 1 - 4 shown, a vertical fluidized bed dryer for tablet production includes a platform frame 1, a vertical heat insulation box 2 is installed at the upper end of the platform frame 1, a receiving box 4 is slidably connected to one end of the platform frame 1, and a drying mechanism is further included.

[0027] A base 11 is fixed to the lower end of the platform frame 1, and a plurality of fixing bolts 12 are arranged in the middle of the base 11; the device can be fixed to a suitable position through the fixing bolts 12.

[0028] A front door 21 is installed at the front end of the vertical heat insulation box 2, an observation board 22 is fixed in the middle of the front door 21, the observation board 22 is made of a transparent material, an electric heating rack 23 is installed at the bottom of the middle section screw 3, a discharge channel 24 is fixed to the lower end of the vertical heat insulation box 2, a plug board 25 is slidably connected to the bottom of the discharge channel 24, and a through slot is opened at the front end of the plug board 25; by turning on the electric heating rack 23, the temperature inside the vertical heat insulation box 2 can be increased, so that the tablets can be dried, and when discharging, after the plug board 25 is pulled out, the materials in the discharge channel 24 can slide into the receiving box 4.

[0029] The drying mechanism includes a middle section screw 3, which is fixed inside the vertical heat insulation box 2. A side plate 31 is rotatably connected to the periphery of the middle section screw 3. One end of the side plate 31 is rotatably connected to a drying cylinder 32. The length of the drying cylinder 32 is the same as the length of the threaded section of the middle section screw 3. A plurality of through holes are provided in the wall of the drying cylinder 32. Guide rods 33 are fixed at the four quadrant points on the inner wall of the drying cylinder 32. One end of the side plate 31 is fixed with a feed pipe 34, and a feed hopper 35 is fixed at the upper end of the feed pipe 34. A pushing ring frame 36 is arranged on one side of the side plate 31. The pushing ring frame 36 is threadedly connected to the middle section screw 3 and is slidably connected to the guide rod 33. A plurality of ejector rods 37 are fixed at one end of the pushing ring frame 36. A baffle 38 is arranged at one end of the drying cylinder 32, and the baffle 38 is slidably connected to the guide rod 33. A plurality of fixing blocks 39 are fixed on the outer wall of the drying cylinder 32, and a spring 310 is fixed between each fixing block 39 and the baffle 38. A driving structure is installed at the rear end of the drying cylinder 32. The driving structure includes a mounting plate 311, which is fixed at the rear end of the vertical heat insulation box 2. A motor 312 is installed at the upper end of the mounting plate 311. A transmission structure 313 is installed between the output shaft of the motor 312 and the drying cylinder 32. The transmission structure 313 is composed of a sprocket, a sprocket ring and a chain meshing around it. The sprocket of the transmission structure 313 is fixed on the output shaft of the motor 312, and the sprocket ring of the transmission structure 313 is fixed on the outer ring of the drying cylinder 32; when the device is operating, through the chain drive of the transmission structure 313 and the rotational connection between the drying cylinder 32 and the side plate 31, when the motor 312 drives the sprocket on the transmission structure 313 to rotate at a low speed, the drying cylinder 32 can be driven to rotate at a low speed accordingly.

[0030] Working principle: Before the device operates, first turn on the electric heating rack 23 to preheat the inside of the vertical heat insulation box 2. Then pour the tablets to be dried into the feed hopper 35. The tablets will be input into the drying cylinder 32 through the feed pipe 34. After the preparation work is completed, start the motor 312. Through the chain drive of the transmission structure 313 and the rotational connection between the drying cylinder 32 and the side plate 31, when the motor 312 drives the sprocket on the transmission structure 313 to rotate slowly, the drying cylinder 32 can rotate slowly accordingly. When the drying cylinder 32 rotates, through the threaded connection between the material pushing ring frame 36 and the middle section screw 3 and the sliding connection between the material pushing ring frame 36 and the guide rod 33, when the drying cylinder 32 rotates, the material pushing ring frame 36 can rotate accordingly. In this way, the material pushing ring frame 36 will push the tablets inside the drying cylinder 32 to slowly move towards one end of the drying cylinder 32. By doing so, while the device is producing tablets, the material pushing ring frame 36 can slowly push the tablets towards one end of the drying cylinder 32. When the ejector rod 37 touches the baffle 38, the baffle 38 will be pushed open through the sliding connection between the baffle 38 and the guide rod 33, so that the material pushing ring frame 36 can push the tablets out of the drying cylinder 32 and drop into the discharge channel 24. At this time, after pulling out the plug board 25, the dried tablets can slide into the collection box 4 for collection. In this way, the drying cylinder 32 can discharge materials quickly no matter which position it rotates to, so that the discharge efficiency of the device is more rapid and effective. After the device completely discharges the tablets, the drying cylinder 32 can be driven to rotate in reverse by the drive structure, so that the material pushing ring frame 36 can be reset. At the same time, the baffle 38 can be reset by the pulling force of the spring 310 to cope with subsequent operations.

[0031] The above shows and describes the basic principle, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A vertical fluidized bed dryer for tablet production, comprising a frame (1), a vertical temperature-isolating box (2) is mounted on the upper end of the frame (1), and a material receiving box (4) is slidably connected to one end of the frame (1), characterized in that: Also includes a drying mechanism; The drying mechanism comprises a middle screw (3), wherein the middle screw (3) is fixed inside the vertical insulation box (2), the outer periphery of the middle screw (3) is rotatably connected to a side plate (31), one end of the side plate (31) is rotatably connected to a drying cylinder (32), guide rods (33) are fixed at four quadrants of the inner wall of the drying cylinder (32), a feed pipe (34) is fixed at one end of the side plate (31), a feed hopper (35) is fixed at the upper end of the feed pipe (34), a push ring frame (36) is provided on one side of the side plate (31), and the push ring frame (36) is provided on the inner side of the side plate (31). 6) is threadedly connected to the middle section screw (3), and the push ring frame (36) is slidably connected to the guide rod (33), one end of the push ring frame (36) is fixed with a plurality of push rods (37), one end of the drying cylinder (32) is provided with a baffle (38), and the baffle (38) is slidably connected to the guide rod (33), the outer wall of the drying cylinder (32) is fixed with a plurality of fixed blocks (39), a spring (310) is fixed between each of the fixed blocks (39) and the baffle (38), and a driving structure is installed at the rear end of the drying cylinder (32).

2. A vertical fluidized bed dryer for tablet production according to claim 1, characterized in that: The length of the drying cylinder (32) is the same as the length of the threaded section of the middle screw rod (3), and a plurality of through holes are formed on the wall of the drying cylinder (32).

3. A vertical fluidized bed dryer for tablet production according to claim 1, characterized in that: The driving structure comprises a mounting plate (311), wherein the mounting plate (311) is fixed to the rear end of the vertical temperature-isolating box (2), a motor (312) is mounted on the upper end of the mounting plate (311), and a transmission structure (313) is mounted between the output shaft of the motor (312) and the drying cylinder (32).

4. A vertical fluidized bed dryer for tablet production according to claim 3, characterized in that: The transmission structure (313) is composed of a sprocket, a sprocket ring and a chain meshing on the periphery thereof; the sprocket of the transmission structure (313) is fixed on the output shaft of the motor (312), and the sprocket ring of the transmission structure (313) is fixed on the outer ring of the drying cylinder (32).

5. A vertical fluidized bed dryer for tablet production according to claim 1, characterized in that: A front door (21) is installed at the front end of the vertical insulation box (2), an observation plate (22) is fixed in the middle of the front door (21), an electric heating rack (23) is installed at the bottom of the middle screw (3), a discharge channel (24) is fixed at the lower end of the vertical insulation box (2), and a plug plate (25) is slidably connected to the bottom of the discharge channel (24).

6. A vertical fluidized bed dryer for tablet production according to claim 5, characterized in that: The observation plate (22) is made of a transparent material, and a through slot is formed at the front end of the plug plate (25).

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