Tablet wet granulation equipment

Abstract

The utility model discloses a tablet wet granulation equipment, which relates to the field of pharmaceutical production technology. The utility model includes a mixing box and a granulation limit plate, a sealing cover is fixed on the top of the mixing box, a first spray pipe is inserted and connected through the center of the top of the sealing cover, a screen tube is fixed on the bottom of the sealing cover, a plurality of second spray tubes are inserted and connected through the outer peripheral surface of the screen tube, a granulation limit plate is arranged at the bottom of the mixing box, a rotating plate is attached to the top of the granulation limit plate, a high-pressure fan is arranged on the rotating plate, and a gas storage bottle is inserted and connected through one end of the high-pressure fan. By arranging a mixing box and a granulation limit plate, the utility model solves the problem that when water needs to be added to a large amount of raw materials being stirred, the water sprayed at the top of the equipment is difficult to mix quickly with the raw materials, the density of the raw materials may be different during the extrusion molding process, and the molding process is easily affected by external factors and deformed.

Description

Technical Field

[0001] The utility model belongs to the technical field of medicine production, in particular to a tablet wet granulation device. Background Art

[0002] Wet granulation is a method of preparing granules by adding a binder to drug powder and agglomerating the powder together by the bridging or bonding effect of the binder. It includes extrusion granulation, rotational granulation, fluidized granulation and stirring granulation. The granules made by the wet method have the advantages of good particle quality, beautiful appearance, strong wear resistance and good compression molding after surface wetting. It is most widely used in the pharmaceutical industry. Granulation equipment can assist the staff in stirring, mixing and granulating the drugs to improve production efficiency. However, it still has the following disadvantages in actual use:

[0003] 1. The utility model with the publication number CN216063139U discloses a high-efficiency wet granulation equipment, wherein the first stirring device comprises a first stirring shaft, a first stirring blade and a first motor; the second stirring device comprises a second stirring shaft, a second stirring blade and a second motor; the first stirring shaft and the second stirring shaft both pass through the pot body and are rotatably connected to the pot body; the first stirring shaft located outside the pot body is fixedly connected to the power output end of the first motor; the first stirring shaft located inside the pot body is vertically and fixedly connected to the first stirring blade; the lower end of the second stirring shaft is fixedly connected to the power output end of the second motor; the upper end of the second stirring shaft is fixedly connected to the second stirring blade; a feed port and a nozzle are arranged above the pot body; the number of nozzles is multiple and evenly distributed around the feed port; a discharge port is arranged at the lower right corner of the pot body, and the nozzles of the granulation equipment are mostly located at the top of the pot body. When water needs to be added during the stirring of a large amount of raw materials, water can only be sprayed on the top of a large amount of raw materials, and it is difficult for water to mix with the raw materials quickly, thereby reducing the stirring and mixing efficiency;

[0004] 2. During the granulation process of the equipment by extrusion, when the raw materials pass through the granulation hole, the density may be affected by the amount of raw materials. In addition, since the raw materials are relatively moist during wet granulation, they are easily deformed by gravity during the extrusion molding process, thereby reducing the quality of the finished product. Utility Model Content

[0005] The utility model aims to provide a tablet wet granulation device, which solves the problems that when the wet granulation device is granulating tablets, the nozzle is often located at the top of the device, and when water needs to be added to a large amount of raw materials being stirred, the sprayed water is difficult to mix with the raw materials quickly, the density of the raw materials may be different during the extrusion molding process, and the molding process is easily affected by external factors and deformed.

[0006] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0007] The utility model is a tablet wet granulation equipment, including a mixing box and a granulation limiting plate, a sealing cover is fixedly connected to the top of the mixing box, a first spray pipe is penetrated and connected to the center of the top of the sealing cover, a screen pipe is fixedly connected to the bottom of the sealing cover, a plurality of second spray pipes are penetrated and connected to the outer peripheral surface of the screen pipe, a limiting air bag is penetrated and connected to the bottom edge of the sealing cover, the limiting air bag is located on the outer peripheral surface of the screen pipe, a granulation limiting plate is arranged at the bottom of the mixing box, a rotating plate is attached to the top of the granulation limiting plate, a high-pressure blower is arranged on the rotating plate, and a gas storage bottle is penetrated and connected to one end of the high-pressure blower;

[0008] When it is necessary to add water to the mixed raw materials, water can be added from the center and the outer peripheral surface of a large amount of raw materials through the first spray pipe and the second spray pipe, so that the raw materials and water can be mixed quickly, thereby improving the stirring and mixing efficiency. After the raw materials are mixed, the bubbles in the raw materials can be screened out through the screen tube to ensure the quality of the finished products. The limiting air bag can be expanded and squeezed on the outer peripheral surface of the screen tube to prevent the raw materials from escaping from the screen tube during mixing. When the raw materials are discharged and granulated, the raw materials enter the rotating plate under pressure, and the raw materials are limited by the granulation limiting plate so that the raw materials can be squeezed in the rotating plate to avoid external interference with the raw materials during the granulation process, thereby ensuring the density and shape of the tablets. When the tablets reach the specified density, the rotation of the rotating plate is controlled, and the high-pressure blower is controlled to pump a large amount of air into the gas storage bottle, so that when the tablets rotate to the bottom of the ventilation pipe, the high-pressure air can quickly separate the tablets from the rotating plate. The operation is simple and convenient.

[0009] Furthermore, a transmission assembly is clamped and fixed on the top of the sealing cover, a stirring motor is clamped on one end of the top of the transmission assembly, the top of the first spray pipe penetrates and is clamped on the bottom of the transmission assembly, the stirring motor is connected to the first spray pipe through the transmission assembly, a stirring blade is clamped and fixed on the outer peripheral surface of the first spray pipe, and a spiral feeding assembly is clamped on the bottom of the first spray pipe;

[0010] The stirring motor drives the stirring blade and the spiral feeding assembly to rotate through the transmission assembly. When the raw materials are stirred, the rotation of the stirring blade can stir the raw materials at high speed to make the raw materials mixed evenly. When the raw materials are discharged and granulated, the raw materials can be transported through the spiral conveying assembly, thereby improving the degree of automation of the equipment.

[0011] Furthermore, a sealing plate is fixedly connected to the bottom of the screen tube, the top of the spiral feeding assembly is inserted into the bottom of the sealing plate, a connecting pipe is inserted into the top of the sealing cover, the bottom of the connecting pipe is inserted into the top of multiple second spray pipes, the center of the bottom of the connecting pipe is inserted into the top of the first spray pipe, the top of the connecting pipe is welded with a water inlet pipe, the top of the sealing cover is welded with a feed pipe, and the feed pipe is located in the screen tube;

[0012] When the raw materials are mixed and stirred, water can be added from the center and the outer peripheral surface of the raw materials through the first spray pipe and the second spray pipe, so that the raw materials and water are mixed quickly, and the stirring and mixing efficiency is improved. After the raw materials are stirred evenly, the scraper is controlled to move up to open the outer peripheral surface of the screen tube. The raw materials can pass through the screen tube quickly under the action of centrifugal force, and the air in the raw materials can be screened out by the screen tube to ensure the quality of the tablets.

[0013] Furthermore, a hopper is welded through the bottom of the mixing box, a first support frame is welded and fixed to the bottom of the outer peripheral surface of the hopper, the spiral feeding assembly is plugged into the inner side of the hopper, a scraper is clamped at the bottom of the limiting airbag, the scraper is attached to the inner wall of the mixing box and the outer peripheral surface of the screen tube, an air pump and a lifting cylinder are clamped through the top of the sealing cover, the air pump and the limiting airbag are connected through, a telescopic tube is slidably clamped at the bottom of the lifting cylinder, and the bottom end of the telescopic tube is clamped at the top of the scraper;

[0014] When the raw materials are mixed, the lifting cylinder controls the scraper to move to the outside of the sealing plate, and controls the air pump to inflate the limiting airbag to make it expand and squeeze on the outer surface of the screen tube to prevent the raw materials from detaching from the screen tube during mixing. After the raw materials are processed, the lifting cylinder controls the scraper to move and slowly discharges the air in the limiting airbag, so that the raw materials pass through the screen tube and enter the hopper under the action of gravity. The rotation of the spiral feeding assembly drives the raw materials to be discharged and granulated. After all the raw materials in the screen tube are discharged, the lifting cylinder controls the scraper to move downward again to scrape off the raw materials attached to the outer wall of the screen tube and the inner wall of the mixing box, so as to ensure full utilization of the raw materials and avoid waste.

[0015] Furthermore, a second support frame is clamped and fixed at the bottom of the granulation limiting plate, a discharge port is penetrated and opened on one side of the bottom of the granulation limiting plate, a support plate is attached to the top of the rotating plate, the support plate is clamped and fixed to the bottom of the outer peripheral surface of the hopper, a rotating motor is clamped and connected to the top of the support plate, the rotating motor is connected to the rotating plate through the support plate, and a plurality of groups of granulation holes are provided on the top of the rotating plate, one group of the granulation holes is attached to the bottom of the hopper, and the other group of the granulation holes is attached to the top of the discharge port;

[0016] When tablets are granulated, the raw materials enter a group of granulation holes and are compacted in the granulation holes under pressure. When they are squeezed to a certain density, the rotating motor can drive the rotating plate to rotate, so that the raw materials can be squeezed into another group of granulation holes, so that the raw materials can be compacted and discharged at the same time, thereby improving processing efficiency.

[0017] Furthermore, an exhaust pipe is inserted through the outer peripheral surface of the high-pressure blower, a ventilation pipe is inserted through the bottom of the gas storage bottle and welded, a solenoid valve is inserted through the top of the outer peripheral surface of the ventilation pipe, the bottom of the ventilation pipe is inserted through and welded to the top of the support plate, and the ventilation pipe is located at the top of the discharge port;

[0018] When a group of granulating holes moves to the top of the discharge hole, the high-pressure fan draws the outside air into the gas cylinder. When the air pressure in the gas cylinder reaches the threshold, the solenoid valve is opened to allow the high-pressure air to quickly enter the ventilation pipe, so that the tablets in the group of granulating holes are quickly discharged under the action of air pressure. The structure is simple and the operation is convenient.

[0019] The utility model has the following beneficial effects:

[0020] 1. The utility model solves the problem that most of the nozzles of the granulating equipment are located on the top of the pot body by arranging a mixing box. When water needs to be added during the stirring of a large amount of raw materials, the water can only be sprayed on the top of the large amount of raw materials, and the water is difficult to mix with the raw materials quickly, thereby reducing the stirring and mixing efficiency. When a large amount of raw materials are mixed, the liquid is pumped into the first spray pipe and the second spray pipe, and water can be added from the center and the outer peripheral surface of the large amount of raw materials through the first spray pipe and the second spray pipe, so that the raw materials and water are quickly mixed, thereby improving the stirring and mixing efficiency.

[0021] 2. The utility model solves the problem that in the process of granulation by extrusion, when the raw material passes through the granulation hole, the density may be affected by the amount of raw material and there may be differences, and because the raw material is relatively moist during wet granulation, it is easy to be deformed by gravity and the like during the extrusion molding process, thereby reducing the quality of the finished product by setting a granulation limiting plate. The raw material enters a group of granulation holes of the rotating plate under pressure, and is limited by the granulation limiting plate so that the raw material is extruded and molded in the granulation holes, thereby avoiding external interference of the raw material during the granulation process and ensuring the density and shape of the tablets. When the tablets reach the specified density, the rotation of the rotating plate is controlled, and the high-pressure fan is controlled to pump a large amount of air into the gas storage bottle, so that when the tablets rotate to the bottom of the ventilation pipe, the high-pressure air can quickly separate the tablets from the rotating plate, and the operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural effect diagram of the utility model;

[0023] Figure 2 It is a structural schematic diagram of the utility model;

[0024] Figure 3 This is a structural diagram of the mixing box of the utility model;

[0025] Figure 4 This is a structural diagram of the position-limiting airbag of the utility model;

[0026] Figure 5 It is the structural diagram of the granulation limiting plate of the utility model.

[0027] Reference numerals:

[0028] 1. Mixing box; 101. Sealing cover; 102. Stirring motor; 103. Transmission assembly; 104. Feed pipe; 105. Lifting cylinder; 106. Limiting airbag; 107. First spray pipe; 108. Stirring blade; 109. Air pump; 110. Screw feeding assembly; 111. Hopper; 112. First support frame; 113. Screen pipe; 114. Second spray pipe; 115. Sealing plate; 116. Connecting pipe; 117. Water inlet pipe; 118. Scraper; 119. Telescopic pipe; 2. Granulation limiting plate; 201. Support plate; 202. High-pressure fan; 203. Gas cylinder; 204. Solenoid valve; 205. Ventilation pipe; 206. Rotating plate; 207. Rotating motor; 208. Granulation hole; 209. Discharge port; 210. Second support frame; 211. Exhaust pipe. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] See also Figure 1-5 As shown, the utility model is a tablet wet granulation equipment, including a mixing box 1 and a granulation limiting plate 2, a sealing cover 101 is fixedly connected to the top of the mixing box 1, a first spray pipe 107 is penetrated and connected to the center of the top of the sealing cover 101, a screen tube 113 is fixedly connected to the bottom of the sealing cover 101, a plurality of second spray pipes 114 are penetrated and connected to the outer peripheral surface of the screen tube 113, a limiting air bag 106 is penetrated and connected to the bottom edge of the sealing cover 101, and the limiting air bag 106 is located on the outer peripheral surface of the screen tube 113, a granulation limiting plate 2 is arranged at the bottom of the mixing box 1, a rotating plate 206 is attached to the top of the granulation limiting plate 2, a high-pressure fan 202 is arranged on the rotating plate 206, and a gas storage bottle 203 is penetrated and connected to one end of the high-pressure fan 202;

[0031] The lifting cylinder 105 is controlled to drive the scraper 118 to move downward, and the air pump 109 is controlled to pump air into the limiting airbag 106, so that the limiting airbag 106 expands and squeezes on the outer peripheral surface of the screen tube 113, and a large amount of raw material powder is poured into the mixing box 1, and the stirring motor 102 is controlled to drive the stirring blade 108 to rotate to stir a large amount of raw materials. When it is necessary to add water to the mixed raw materials, water is pumped into the first spray pipe 107 and the second spray pipe 114, so that water is added from the center and outer peripheral surface of the large amount of raw materials, so that the raw materials and water are quickly mixed. After the raw materials are mixed, the lifting cylinder 105 is controlled to drive the scraper 1 18 moves upward, so that the raw material passes through the screen tube 113 under the action of centrifugal force and the bubbles in the raw material are screened out. The raw material enters the hopper 111 under the action of gravity and is continuously squeezed into a group of granulation holes 208 of the rotating plate 206 through the spiral feeding assembly 110. After the raw material is compacted and formed in the granulation holes 208, the rotating plate 206 is driven by the rotating motor 207 to rotate so that the tablets move to the top of the discharge port 209, and the high-pressure fan 202 is controlled to pump a large amount of air into the gas cylinder 203. After the specified air pressure is reached in the gas cylinder 203, the ventilation pipe 205 is opened so that the air pressure drives the tablets in the granulation holes 208 to be discharged quickly.

[0032] Among them Figure 1-4 As shown, the top of the sealing cover 101 is clamped and fixed with a transmission assembly 103, one end of the top of the transmission assembly 103 is clamped with a stirring motor 102, the top of the first spray pipe 107 passes through and is clamped at the bottom of the transmission assembly 103, the stirring motor 102 is connected to the first spray pipe 107 through the transmission assembly 103, the stirring motor 102 is connected to the first spray pipe 107 through the transmission assembly 103, the outer peripheral surface of the first spray pipe 107 is clamped and fixed with a stirring blade 108, the bottom of the first spray pipe 107 is clamped with a spiral feeding assembly 110, and the bottom of the screen pipe 113 is clamped and fixed with The sealing plate 115, the top of the spiral feeding assembly 110 is inserted through the bottom of the sealing plate 115, the top of the sealing cover 101 is inserted through the connecting pipe 116, the bottom of the connecting pipe 116 is inserted through the top of the second spray pipes 114, the center of the bottom of the connecting pipe 116 is inserted through the top of the first spray pipe 107, the top of the connecting pipe 116 is penetrated and welded with a water inlet pipe 117, the top of the sealing cover 101 is penetrated and welded with a feed pipe 104, and the feed pipe 104 is located in the screen pipe 113;

[0033] A hopper 111 is welded through the bottom of the mixing box 1, a first support frame 112 is welded and fixed to the bottom of the outer peripheral surface of the hopper 111, a spiral feeding assembly 110 is inserted into the inner side of the hopper 111, a scraper 118 is clamped at the bottom of the limiting airbag 106, the scraper 118 is attached to the inner wall of the mixing box 1 and the outer peripheral surface of the screen tube 113, an air pump 109 and a lifting cylinder 105 are clamped through the top of the sealing cover 101, the air pump 109 and the limiting airbag 106 are connected through, a telescopic tube 119 is slidably clamped at the bottom of the lifting cylinder 105, and the bottom end of the telescopic tube 119 is clamped at the top of the scraper 118;

[0034] The lifting cylinder 105 is controlled to drive the telescopic tube 119 to stretch, further drive the scraper 118 to move downward, and the air pump 109 is controlled to pump air into the limiting airbag 106, so that the limiting airbag 106 expands and squeezes on the outer peripheral surface of the screen tube 113, and a large amount of raw material powder is poured into the mixing box 1 through the feeding pipe 104. The stirring motor 102 is controlled to drive the first spray pipe 107 to rotate, and further drive the stirring blade 108 and the spiral feeding assembly 110 to rotate, so as to stir a large amount of raw materials. When water needs to be added to the mixed raw materials, the water is pumped into the first spray pipe 107 and the second spray pipe 114 through the water inlet pipe 117. Water is added from the center and the outer peripheral surface of a large amount of raw materials to quickly mix the raw materials and water. After the raw materials are mixed, the lifting cylinder 105 is controlled to drive the scraper 118 to move upward, so that the raw materials pass through the screen tube 113 under the action of centrifugal force and the bubbles in the raw materials are screened out. The raw materials enter the hopper 111 under the action of gravity and are continuously squeezed into a group of granulation holes 208 of the rotating plate 206 through the spiral feeding assembly 110. After all the raw materials in the screen tube 113 are discharged, the lifting cylinder 105 controls the scraper 118 to move downward again to scrape off the raw materials attached to the outer wall of the screen tube 113 and the inner wall of the mixing box 1, so as to ensure full utilization of the raw materials.

[0035] Among them Figure 1 , 2 As shown in Figure 5, the bottom of the granulating limit plate 2 is clamped and fixed with a second support frame 210, and a discharge port 209 is opened on one side of the bottom of the granulating limit plate 2. The top of the rotating plate 206 is attached with a support plate 201, and the support plate 201 is clamped and fixed to the bottom of the outer peripheral surface of the hopper 111. The top of the support plate 201 is clamped with a rotating motor 207, and the rotating motor 207 is connected to the rotating plate 206 through the support plate 201. The top of the rotating plate 206 is provided with a plurality of groups of Granulation holes 208, one group of granulation holes 208 is attached to the bottom of the hopper 111, and the other group of granulation holes 208 is attached to the top of the discharge port 209. The outer peripheral surface of the high-pressure fan 202 is penetrated and connected with an exhaust pipe 211. The bottom of the gas storage bottle 203 is penetrated and welded with a vent pipe 205. The top of the outer peripheral surface of the vent pipe 205 is penetrated and connected with a solenoid valve 204. The bottom of the vent pipe 205 is penetrated and welded to the top of the support plate 201. The vent pipe 205 is located at the top of the discharge port 209.

[0036] During tablet granulation, the raw material enters a group of granulation holes 208 and is compacted in the granulation holes 208 under pressure. When it is squeezed to a certain density, the rotating motor 207 drives the rotating plate 206 to rotate, so that the raw material is squeezed into another group of granulation holes 208. At the same time, the group of granulation holes 208 containing tablets are moved to above the discharge port 209. The high-pressure fan 202 draws the outside air into the gas cylinder 203. When the air pressure in the gas cylinder 203 reaches the threshold, the solenoid valve 204 is opened to allow the high-pressure air to quickly enter the ventilation pipe 205, so that the tablets in the group of granulation holes 208 are quickly discharged under the action of air pressure.

[0037] The specific working principle of the utility model is as follows: when wet granulation of tablets is required, the lifting cylinder 105 is controlled to drive the telescopic tube 119 to stretch, further drive the scraper 118 to move downward, and control the air pump 109 to pump air into the limiting airbag 106, so that the limiting airbag 106 expands and squeezes on the outer peripheral surface of the screen tube 113, and a large amount of raw material powder is poured into the mixing box 1 through the feeding pipe 104, and the stirring motor 102 is controlled to drive the stirring blade 108 and the spiral feeding assembly 110 to rotate, so as to stir a large amount of raw materials, and water is pumped into the first spray pipe 107 and the second spray pipe 114 through the water inlet pipe 117, so that water is added from the center and the outer peripheral surface of a large amount of raw materials, so that the raw materials and water are quickly mixed, and after the raw materials are mixed, the lifting cylinder 105 is controlled to drive the scraper 118 to move upward, so that the raw materials are sieved through the screen tube 113 under the action of centrifugal force, and the raw materials enter the hopper 1 under the action of gravity. 11 and the spiral feeding assembly 110 rotates so that the raw materials are continuously squeezed into a group of granulation holes 208 of the rotating plate 206. The raw materials are compacted in the granulation holes 208 under the action of pressure. When they are squeezed to a certain density, the rotating motor 207 drives the rotating plate 206 to rotate, so that the raw materials are squeezed into another group of granulation holes 208, and at the same time, the group of granulation holes 208 containing tablets are moved to above the discharge port 209. The high-pressure fan 202 draws the outside air into the gas cylinder 203. When the air pressure in the gas cylinder 203 reaches the threshold, the solenoid valve 204 is opened to allow the high-pressure air to quickly enter the ventilation pipe 205, so that the tablets in the group of granulation holes 208 are quickly discharged under the action of air pressure. After all the raw materials in the screen pipe 113 are discharged, the lifting cylinder 105 controls the scraper 118 to move downward again to scrape off the raw materials attached to the outer wall of the screen pipe 113 and the inner wall of the mixing box 1, so as to ensure the full utilization of the raw materials.

[0038] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A tablet wet granulation device, comprising a mixing box (1) and a granulation limiting plate (2), characterized in that: A sealing cover (101) is fixedly connected to the top of the mixing box (1), a first spray pipe (107) is inserted through the center of the top of the sealing cover (101), a screen tube (113) is fixedly connected to the bottom of the sealing cover (101), a plurality of second spray pipes (114) are inserted through the outer peripheral surface of the screen tube (113), a limiting air bag (106) is inserted through the bottom edge of the sealing cover (101), the limiting air bag (106) is located on the outer peripheral surface of the screen tube (113), a granulation limiting plate (2) is arranged at the bottom of the mixing box (1), a rotating plate (206) is attached to the top of the granulation limiting plate (2), a high-pressure fan (202) is arranged on the rotating plate (206), and a gas storage bottle (203) is inserted through one end of the high-pressure fan (202).

2. A tablet wet granulation equipment according to claim 1, characterized in that: A transmission assembly (103) is clamped and fixed on the top of the sealing cover (101); a stirring motor (102) is clamped and fixed on one end of the top of the transmission assembly (103); the top of the first spray pipe (107) passes through and is clamped and connected to the bottom of the transmission assembly (103); the stirring motor (102) is transmission-connected to the first spray pipe (107) via the transmission assembly (103); a stirring blade (108) is clamped and fixed on the outer peripheral surface of the first spray pipe (107); and a spiral feeding assembly (110) is clamped and connected to the bottom of the first spray pipe (107).

3. A tablet wet granulation equipment according to claim 2, characterized in that: A sealing plate (115) is clamped and fixed at the bottom of the screen tube (113); the top of the spiral feeding assembly (110) is inserted into the bottom of the sealing plate (115); a connecting pipe (116) is inserted into the top of the sealing cover (101); the bottom of the connecting pipe (116) is clamped and connected to the tops of a plurality of second spray pipes (114); the center of the bottom of the connecting pipe (116) is inserted into the top of the first spray pipe (107); a water inlet pipe (117) is welded to the top of the connecting pipe (116); a feed pipe (104) is welded to the top of the sealing cover (101); and the feed pipe (104) is located in the screen tube (113).

4. A tablet wet granulation equipment according to claim 2, characterized in that: A hopper (111) is welded through the bottom of the mixing box (1), a first support frame (112) is welded and fixed to the bottom of the outer peripheral surface of the hopper (111), the spiral feeding assembly (110) is plugged into the inner side of the hopper (111), a scraper (118) is clamped on the bottom of the limiting airbag (106), the scraper (118) is attached to the inner wall of the mixing box (1) and the outer peripheral surface of the screen tube (113), an air pump (109) and a lifting cylinder (105) are clamped through the top of the sealing cover (101), the air pump (109) and the limiting airbag (106) are connected through the inside, a telescopic tube (119) is slidably clamped on the bottom of the lifting cylinder (105), and the bottom end of the telescopic tube (119) is clamped on the top of the scraper (118).

5. A tablet wet granulation equipment according to claim 4, characterized in that: A second support frame (210) is fixedly connected to the bottom of the granulation limiting plate (2), a discharge port (209) is formed through one side of the bottom of the granulation limiting plate (2), a support plate (201) is attached to the top of the rotating plate (206), the support plate (201) is fixedly connected to the bottom of the outer peripheral surface of the hopper (111), a rotating motor (207) is connected through the top of the support plate (201), the rotating motor (207) is connected to the rotating plate (206) by transmission via the support plate (201), and a plurality of groups of granulation holes (208) are formed on the top of the rotating plate (206), one group of the granulation holes (208) is attached to the bottom of the hopper (111), and another group of the granulation holes (208) is attached to the top of the discharge port (209).

6. A tablet wet granulation equipment according to claim 5, characterized in that: An exhaust pipe (211) is inserted through the outer circumference of the high-pressure blower (202), a ventilation pipe (205) is inserted through the bottom of the gas storage bottle (203) and is welded thereto, a solenoid valve (204) is inserted through the top of the outer circumference of the ventilation pipe (205), the bottom of the ventilation pipe (205) is inserted through and welded to the top of the support plate (201), and the ventilation pipe (205) is located at the top of the discharge port (209).

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