A wet granulator

Abstract

The application relates to the granulation technical field, in particular to a wet granulator, which comprises a vertically arranged granulation tank, a discharge pipe arranged on the peripheral wall of the granulation tank, a discharge port arranged at the lower part of the peripheral wall of the discharge pipe, and a filtering assembly arranged at the lower end of the discharge port; the discharge pipe is in communication with the interior of the granulation tank, and the axes of the two are perpendicular to each other; the discharge port is in communication with the interior of the discharge pipe; the filtering assembly comprises a mounting box arranged at the lower end of the discharge port, a square shaking frame horizontally slidingly arranged in the mounting box, and a treatment sieve plate horizontally arranged in the shaking frame; the mounting box is provided with an opening downward; the bottom of the mounting box is in communication with the discharge port; a strip-shaped notch is arranged at the upper end of the side wall of the shaking frame; strip-shaped mounting grooves are arranged at the inner walls of the two ends of the shaking frame; the mounting grooves are in communication with the notch; the lower groove walls of the mounting grooves are flush with the bottom of the notch; the end of the treatment sieve plate is matched with the mounting groove; and the treatment sieve plate is inserted into the mounting groove, so that the granules after production can be filtered.

Description

Technical Field

[0001] This application relates to the field of granulation technology, and in particular to a wet granulation machine. Background Technology

[0002] Currently, wet granulation machines are required in the production of Chinese medicine granules. A wet granulation machine is used to add the main and auxiliary materials to be granulated into a feeding cylinder in a suitable proportion and formula. The powder materials and binders are thoroughly mixed at high speed by the bottom stirring paddle in the feeding cylinder to form a moist soft material. Then, the stirring paddle stirs up the moist soft material. The raw materials are formed into uniform wet granules during the collision with the stirring paddle and the inner wall of the feeding cylinder, thereby achieving the purpose of granulation.

[0003] The existing technical solutions mentioned above have the following defects: if the soft material is not mixed evenly or the binder is excessive during the granulation process, large undispersed lumps are easily formed, or some particles are overheated and compacted on the granulation chamber wall, forming hard particles with a hardness far exceeding the standard. When the lumps or hard particles enter the subsequent processing equipment, they will block the channels of the subsequent equipment and reduce the granulation efficiency. Utility Model Content

[0004] This application provides a wet granulation machine for filtering the produced granules.

[0005] The above-mentioned technical objective of this application is achieved through the following technical solution:

[0006] A wet granulation machine includes a vertically arranged granulation tank, a discharge pipe disposed on the outer peripheral wall of the granulation tank, a discharge port disposed at the lower part of the outer peripheral wall of the discharge pipe, and a filter assembly disposed at the lower end of the discharge port. The discharge pipe is connected to the interior of the granulation tank, and their axes are perpendicular to each other. The discharge port is connected to the interior of the discharge pipe. The filter assembly includes a mounting box disposed at the lower end of the discharge port, a square shaking frame horizontally slidably disposed in the mounting box, and a processing screen plate horizontally disposed in the shaking frame. The mounting box has an opening facing downwards, and the bottom of the mounting box is connected to the discharge port. A strip-shaped notch is opened at the upper end of the side wall of the shaking frame. Strip-shaped mounting grooves are opened on the inner walls at both ends of the shaking frame. The mounting grooves are connected to the notch, and the lower wall of the mounting groove is flush with the bottom of the notch. The end of the processing screen plate is adapted to the mounting groove, and the processing screen plate is inserted into the mounting groove.

[0007] By adopting the above technical solution, a granulation tank, a discharge pipe, a discharge port, and a filter assembly are set up. The filter assembly includes a mounting box, a shaking frame, and a processing screen plate. The upper end of the side wall of the shaking frame has a strip-shaped notch, and the inner walls at both ends of the shaking frame have strip-shaped mounting grooves that communicate with the notch and whose lower groove walls are flush with the bottom of the notch. The processing screen plate is detachably inserted into the mounting groove, which allows the granulation tank to provide the necessary space for granulation, facilitating the mixing and granulation of powder materials and binders inside. The discharge pipe and discharge port work together to export the granules produced in the granulation tank. The processing screen plate screens and filters the exported granules, separating clumps formed during the granulation process due to uneven mixing of soft materials and excessive binder, as well as hard particles that have been excessively heated and compacted, reducing the possibility of them entering subsequent equipment and causing damage. The detachable processing screen plate facilitates cleaning and replacement.

[0008] Optionally, two connecting posts are spaced apart on the inner walls of both ends of the mounting box. The axis of the connecting posts is perpendicular to the inner wall of the end of the mounting box. The four connecting posts are arranged in a rectangular pattern. Shaking sliding holes that connect the inside and outside of the shaking frame are opened at corresponding positions on the two end walls of the shaking frame. The shaking sliding holes are adapted to the connecting posts. The two ends of the shaking frame are fitted onto the periphery of the connecting posts at both ends of the mounting box through the shaking sliding holes.

[0009] By adopting the above technical solution, and by setting connecting columns, the shaking sliding holes at corresponding positions on the two end walls of the shaking frame are adapted to the connecting columns and connect the inside and outside of the shaking frame. The shaking frame is fitted onto the peripheral wall of the connecting column through the shaking sliding holes, which enables the shaking frame to slide stably horizontally along the axis of the connecting column. The rectangularly distributed connecting columns can limit the lateral displacement of the shaking frame during the sliding process, ensuring that the shaking frame drives the processing screen plate to always move within the preset screening range, maintaining the stability of the filtration process and improving the screening effect.

[0010] Optionally, the end of the connecting column away from the inner wall of the mounting box is coaxially provided with an annular thickened portion.

[0011] By adopting the above technical solution, and by setting an annular thickened part, the annular thickened part can limit the shaking frame and reduce the possibility of the shaking frame separating from the connecting column during the sliding process.

[0012] Optionally, a limiting plate is fixed to the side wall of the processing screen plate, the limiting plate can close the gap, and the box wall away from the support frame has a placement hole that connects the inside and outside of the mounting box, through which the limiting plate can pass.

[0013] By adopting the above technical solution, and by setting a limiting plate, the wall of the mounting box has a placement hole that connects the inside and outside of the mounting box and allows the limiting plate to pass through. The limiting plate can close the gap on the shaking frame, reducing the possibility of particles leaking out of the mounting box from the gap during the screening process, thus reducing particle loss. The placement hole provides a channel for the removal and installation of the processing screen plate along with the limiting plate, further simplifying the replacement operation of the processing screen plate and improving the ease of use of the equipment.

[0014] Optionally, a movable door is rotatably provided inside the placement hole, which closes the placement hole.

[0015] By adopting the above technical solution and setting up an movable door, the possibility of particles flying out of the placement hole during the filtration process can be reduced, thus reducing particle loss.

[0016] Optionally, a screening motor is installed inside the mounting box. The housing of the screening motor is fixedly connected to the bottom of the inner box of the mounting box. A circular rotating plate is coaxially fixed to the end of the output shaft of the screening motor. The rotating plate is spaced apart from the inner wall of the mounting box. The plate surface of the rotating plate away from the screening motor is flush with the outer wall of the shaking frame near the side wall of the mounting box. The screening motor is always spaced apart from the shaking frame. Hinges are fixedly connected to both the plate surface of the rotating plate away from the screening motor and the outer wall of the shaking frame. The hinges on the plate surface of the rotating plate and the hinges on the outer wall of the shaking frame are hinged to each other through hinge plates. The screening motor drives the shaking frame to reciprocate along the axis of the connecting column through the rotating plate, the hinges, and the hinge plates.

[0017] By adopting the above technical solution, and by setting up a screening motor, a rotating plate, a hinge column, and a hinge plate, the screening motor can drive the rotating plate to rotate. The rotating plate converts the rotational motion into the reciprocating motion of the shaking frame along the axis of the connecting column through the hinge column and the hinge plate. This causes the shaking frame to drive the processing screen plate to shake actively, thereby increasing the throughput of particles on the processing screen plate, reducing particle accumulation, and thus improving screening and filtration efficiency.

[0018] Optionally, the hinge post on the rotating plate surface is offset from the center of the rotating plate surface.

[0019] By adopting the above technical solution, the hinge pins on the rotating plate are offset from the center of the rotating plate. When the rotating plate rotates with the screening motor, the hinge pins on the rotating plate can make circular motion around the center of the rotating plate. In turn, the hinge plate drives the hinge pins on the shaking frame to move back and forth, and finally realizes the reciprocating sliding of the shaking frame along the axis of the connecting column. This provides a stable power transmission structure for the shaking action of the shaking frame and ensures that the shaking amplitude and frequency meet the screening requirements.

[0020] Optionally, an electric push rod is provided at the end of the discharge pipe away from the granulation tank. The outer casing of the electric push rod is fixedly connected to the inner wall of the discharge pipe. The push rod of the electric push rod faces the granulation tank. A discharge piston is coaxially fixedly connected to the end of the push rod of the electric push rod. The discharge piston is adapted to the inner wall of the discharge pipe, and the peripheral wall of the discharge piston slides against the peripheral wall of the discharge pipe.

[0021] By adopting the above technical solution, and by setting an electric push rod and a discharge piston, the discharge piston can be driven by the electric push rod to move along the axis of the discharge pipe, thereby adjusting the space between the discharge piston and the granulation tank, and thus controlling the speed at which particles enter the discharge pipe from the granulation tank. At the same time, the discharge piston can be used to block the connection between the discharge pipe and the granulation tank, so as to realize the pause and start of discharge, which makes it easy to adjust the discharge amount according to the screening rhythm and improve the flexibility of equipment operation.

[0022] In summary, this application has the following technical effects:

[0023] 1. The system is equipped with a granulation tank, a discharge pipe, a discharge port, and a filter assembly. The filter assembly includes a mounting box, a shaking frame, and a processing screen plate. The upper side wall of the shaking frame has a strip-shaped notch, and the inner walls at both ends of the shaking frame have strip-shaped mounting grooves that communicate with the notch and whose lower groove walls are flush with the bottom of the notch. The processing screen plate is detachably inserted into the mounting groove, allowing the granulation tank to provide the necessary space for granulation, facilitating the mixing and granulation of powder materials and binders inside. The discharge pipe and discharge port work together to export the granules produced in the granulation tank. The processing screen plate screens and filters the exported granules, separating clumps formed during the granulation process due to uneven mixing of soft materials and excessive binder, as well as hard particles that have been excessively heated and compacted, reducing the possibility of them entering subsequent equipment and causing damage. The detachable processing screen plate facilitates cleaning and replacement.

[0024] 2. By setting connecting columns, the shaking sliding holes at corresponding positions on the two end walls of the shaking frame are adapted to the connecting columns and connect the inside and outside of the shaking frame. The shaking frame is fitted onto the peripheral wall of the connecting column through the shaking sliding holes, which enables the shaking frame to slide stably horizontally along the axis of the connecting column. The rectangularly distributed connecting columns can limit the lateral displacement of the shaking frame during the sliding process, ensuring that the shaking frame drives the processing screen plate to always move within the preset screening range, maintaining the stability of the filtration process and improving the screening effect;

[0025] 3. By setting a limiting plate, the wall of the mounting box has a placement hole that connects the inside and outside of the mounting box and allows the limiting plate to pass through. The limiting plate can close the gap on the shaking frame, reducing the possibility of particles leaking out of the mounting box during the screening process, thus reducing particle loss. The placement hole provides a channel for the removal and installation of the processing screen plate along with the limiting plate, further simplifying the replacement operation of the processing screen plate and improving the ease of use of the equipment. Attached Figure Description

[0026] Figure 1 This is a structural diagram of the object of this application;

[0027] Figure 2 This is a structural diagram of the pelletizing component of this application;

[0028] Figure 3 This is a structural diagram of the filtering component in this application.

[0029] Explanation of reference numerals in the attached drawings: 1. Granulation assembly; 11. Granulation tank; 111. Sealing cover; 1111. Feed pipe; 1112. Mixing agent spray pipe; 12. Agitator; 13. Granulation knife; 14. Discharge pipe; 141. Discharge piston; 142. Electric push rod; 143. Discharge port; 2. Filter assembly; 21. Mounting box; 211. Connecting column; 212. Placement hole; 22. Vibrating frame; 221. Vibrating sliding hole; 222. Notch; 223. Mounting groove; 224. Hinge column; 23. Processing screen plate; 231. Limiting plate; 24. Screening motor; 241. Rotating plate; 25. Hinge plate; 26. Movable door. Detailed Implementation

[0030] The present application will be further described in detail below with reference to the accompanying drawings.

[0031] This application discloses a wet granulation machine, referring to... Figure 1 The granulator includes a granulation component 1 and a filter component 2 installed at the discharge port of the granulation component 1. The granulation component 1 can fully mix various powder materials and make them into granules of uniform size. The filter component 2 can filter the granules produced by the granulation component 1, screen out the lumps formed by uneven mixing of soft materials and excessive binder, and some hard particles formed by excessive heating and compaction on the granulation chamber wall, reducing the possibility of them entering subsequent equipment.

[0032] Combination Figure 1 and Figure 2 The granulation assembly 1 includes a granulation tank 11 disposed on the upper surface of a granulation platform, a sealing cover 111 rotatably disposed on the upper part of the granulation tank 11 to close the granulation tank 11, a stirring paddle and granulation blade 13 rotatably disposed inside the granulation tank 11, a feed pipe 1111 and a mixture spray pipe 1112 disposed on the sealing cover 111, and a discharge pipe 14 disposed outside the granulation tank 11. The granulation tank 11 is a cylinder closed at one end, and the granulation tank 11 is vertically disposed. The outer surface of the closed end of the granulation tank 11 is fixed to the upper surface of the granulation platform and is located at the edge of the upper surface of the granulation platform. The upper end of the granulation tank 11 tapers into a conical shape. The sealing cover 111 is a circular plate, which is adapted to the upper end of the granulation tank 11, and the plate surface of the sealing cover 111 is in contact with the upper end surface of the granulation tank 11.

[0033] Combination Figure 1 and Figure 2The stirring paddle is rotatably mounted on the inner surface of the closed end of the granulation tank 11. The stirring paddle 12 consists of three blades located on the same horizontal plane. The ends of the three blades are fixed together, and the angle between any two adjacent blades is the same. The stirring is rotatably connected to the granulation tank 11 via a rotating shaft. The end face of the rotating shaft is fixed to the center of the stirring paddle 12. The axis of the rotating shaft is perpendicular to the horizontal plane where the three blades are located. The end of the rotating shaft away from the stirring paddle 12 is rotatably mounted inside the closed end of the granulation tank 11. The stirring paddle can mix the powder with binder and throw it into the air.

[0034] Combination Figure 1 and Figure 2 The granulating blade 13 is disposed on the inner wall of the granulation tank 11, spaced apart from the stirring paddle. The granulating blade 13 consists of a rotating rod and blades disposed on the peripheral wall of the rotating rod. The end of the rotating rod is rotatably disposed within the peripheral wall of the granulation tank 11, and the axis of the rotating rod is perpendicular to the axis of the granulation tank 11. Multiple blades are evenly disposed along the axial direction of the rotating rod. The granulating blade 13 can cut the soft material mixed by stirring into uniformly sized particles. The feed pipe 1111 and the mixing agent spray pipe 1112 are spaced apart on the plate surface of the sealing cover 111 facing away from the granulation tank 11. Both the feed pipe 1111 and the mixing agent spray pipe 1112 are connected to the plate surface of the sealing cover 111, adhering to it.

[0035] Combination Figure 1 and Figure 2 The granulation tank 11 has a discharge pipe 14 on its outer peripheral wall. The discharge pipe 14 is a closed circular pipe with its axis perpendicular to the axis of the granulation tank 11. The discharge pipe 14 is located outside the granulation platform. An electric push rod 142 is installed inside the closed end of the discharge pipe 14. The outer peripheral wall of the electric push rod 142 is fixedly connected to the inner wall of the discharge pipe 14. The push rod of the electric push rod 142 faces the granulation tank 11. A discharge piston 141 is coaxially fixedly connected to the end of the push rod of the electric push rod 142. The discharge piston 141 is adapted to the inner wall of the discharge pipe 14. The peripheral wall of the discharge piston 141 slides against the peripheral wall of the discharge pipe 14. The discharge piston 141 can approach the granulation tank 11 and can control the discharge speed of the discharge pipe 14.

[0036] Combination Figure 2 and Figure 3An inclined discharge port 143 is provided on the lower part of the outer peripheral wall of the discharge pipe 14. The upper end of the discharge port 143 is connected to the interior of the discharge pipe 14, and the other end of the discharge port 143 is inclined away from the granulation tank 11. The upper end of the discharge port 143 is close to the granulation tank 11. A filter assembly 2 is provided at the lower end of the discharge port 143. The filter assembly 2 includes a mounting box 21 provided at the lower end of the discharge port 143, a shaking frame 22 slidably provided inside the mounting box 21, and a processing screen plate 23 detachably provided inside the shaking frame 22. The mounting box 21 has an opening facing away from the discharge pipe 14. The length direction of the mounting box 21 is parallel to the axis of the discharge pipe 14, and the bottom of the mounting box 21 is connected to the lower end of the discharge port 143.

[0037] Combination Figure 2 and Figure 3 The shaking frame 22 is a square frame structure composed of four strip plates connected end to end. The surfaces of two adjacent strip plates of the shaking frame 22 are perpendicular to each other. The length direction of the shaking frame 22 is parallel to the length direction of the mounting box 21. Two connecting columns 211 are spaced apart on the inner walls of both ends of the mounting box 21. The connecting columns 211 are cylindrical and their axes are perpendicular to the inner walls of the ends of the mounting box 21. The four connecting columns 211 are arranged in a rectangular pattern. Shaking sliding holes 221 are opened at corresponding positions on the two end walls of the shaking frame 22, connecting the inside and outside of the shaking frame 22. The shaking sliding holes 221 are adapted to the connecting columns 211. The two ends of the shaking frame 22 are fitted onto the periphery of the connecting columns 211 at both ends of the mounting box 21 through the shaking sliding holes 221. The shaking frame 22 can reciprocate along the axis of the connecting columns 211.

[0038] Combination Figure 2 and Figure 3 The end of the connecting post 211 furthest from the inner wall of the mounting box 21 is coaxially provided with an annular thickened part. The annular thickened part can limit the shaking frame 22, reducing the possibility of the shaking frame 22 separating from the connecting post 211 during sliding. The length of the shaking frame 22 is greater than the length of the discharge port 143. A strip-shaped notch 222 is opened at the upper end of the side wall of the shaking frame 22. The length direction of the notch 222 is parallel to the length direction of the shaking frame 22, and the two end walls of the notch 222 are flush with the inner end walls of the two ends of the shaking frame 22.

[0039] Combination Figure 2 and Figure 3The vibrating frame 22 has strip-shaped mounting grooves 223 on both inner walls at both ends. These mounting grooves 223 are spaced apart from the vibrating sliding holes 221. The length of the mounting grooves 223 is perpendicular to the length of the vibrating frame 22, and they communicate with the notch 222. The lower wall of the mounting groove 223 is flush with the bottom of the notch 222. The surface of the processing screen plate 23 is parallel to the surface of the first mounting plate. The end of the processing screen plate 23 is adapted to the mounting groove 223, allowing it to be detachably inserted into the groove. The processing screen plate 23 can filter the granules produced by the granulation component 1. Different sizes of processing screen plates 23 can be selected to meet different particle size requirements. A limiting plate 231 is fixed to the side wall of the processing screen plate 23, which can close the notch 222. During the sliding process of the vibrating frame 22, the surface of the processing screen plate 23 is always opposite to the lower end of the discharge port 143. A handle is provided on the surface of the limiting plate 231 facing away from the processing screen plate 23. The side wall of the mounting box 21 opposite to the limiting plate 231 has a placement hole 212 that connects the inside and outside of the mounting box 21. The placement hole 212 is used to place the processing screen plate 23. A movable door 26 is rotatably provided in the placement hole 212. The movable door 26 closes the placement hole 212 to reduce the possibility of particles flying out of the placement hole 212 during the filtration process.

[0040] Combination Figure 2 and Figure 3 The mounting box 21 is equipped with a screening motor 24. The output shaft axis of the screening motor 24 is perpendicular to the length direction of the shaking frame 22. The screening motor 24 is located on the inner wall of one end of the mounting box 21. The outer shell of the screening motor 24 is fixedly connected to the bottom of the inner box of the mounting box 21. A circular rotating plate 241 is coaxially fixed to the end of the output shaft of the screening motor 24. The rotating plate 241 is spaced apart from the inner wall of the mounting box 21. The plate surface of the rotating plate 241 facing away from the screening motor 24 is flush with the outer wall of the shaking frame 22 near the side wall of the mounting box. The screening motor 24 is always spaced apart from the shaking frame 22. The rotating plate 241, which is away from the screen motor 24, and the outer wall of the shaking frame 22 are both fixedly connected with hinge columns 224. The length direction of the hinge columns 224 is parallel to the length direction of the crossbar. The hinge columns 224 on the rotating plate 241 are off-center from the center of the rotating plate 241. The hinge columns 224 on the rotating plate 241 and the hinge columns 224 on the outer wall of the shaking frame 22 are hinged to each other through the hinge plate 25. The screen motor 24 drives the shaking frame 22 to reciprocate along the axis of the connecting column 211 through the rotating plate 241, the hinge columns 224 and the hinge plate 25.

[0041] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A wet granulation machine, characterized in that: It includes a vertically arranged granulation tank (11), a discharge pipe (14) disposed on the outer peripheral wall of the granulation tank (11), a discharge port (143) disposed at the lower part of the outer peripheral wall of the discharge pipe (14), and a filter assembly (2) disposed at the lower end of the discharge port (143). The discharge pipe (14) is connected to the inside of the granulation tank (11), and the axes of the two are perpendicular to each other. The discharge port (143) is connected to the inside of the discharge pipe (14). The filter assembly (2) includes a mounting box (21) located at the lower end of the discharge port (143), a square shaking frame (22) horizontally slidably disposed in the mounting box (21), and a processing screen plate (23) horizontally disposed in the shaking frame (22). The mounting box (21) has an opening facing downwards, and the bottom of the mounting box (21) is connected to the discharge port (143). The upper end of the side wall of the shaking frame (22) is provided with a strip-shaped notch (222). The inner walls at both ends of the shaking frame (22) are provided with strip-shaped mounting grooves (223). The mounting grooves (223) are connected to the notch (222), and the lower wall of the mounting groove (223) is flush with the bottom of the notch (222). The end of the processing screen plate (23) is adapted to the mounting groove (223), and the processing screen plate (23) is inserted into the mounting groove (223).

2. The wet granulation machine according to claim 1, characterized in that: The mounting box (21) has two connecting posts (211) spaced apart on the inner walls of both ends. The axis of the connecting posts (211) is perpendicular to the inner wall of the end of the mounting box (21). The four connecting posts (211) are arranged in a rectangular shape. The two end walls of the shaking frame (22) are provided with shaking sliding holes (221) that connect the inside and outside of the shaking frame (22). The shaking sliding holes (221) are adapted to the connecting posts (211). The two ends of the shaking frame (22) are fitted onto the periphery of the connecting posts (211) at both ends of the mounting box (21) through the shaking sliding holes (221).

3. A wet granulation machine according to claim 2, characterized in that: The end of the connecting column (211) away from the inner wall of the mounting box (21) is coaxially provided with an annular thickened part.

4. A wet granulation machine according to claim 3, characterized in that: The processing screen plate (23) is fixed to the side wall with a limiting plate (231), which can close the notch (222). The mounting box (21) has a placement hole (212) on the side wall away from the support frame, which connects the inside and outside of the mounting box (21). The limiting plate (231) can pass through the placement hole (212).

5. A wet granulation machine according to claim 4, characterized in that: A movable door (26) is rotatably provided inside the placement hole (212), and the movable door (26) closes the placement hole (212).

6. A wet granulation machine according to claim 2, characterized in that: A screening motor (24) is installed inside the mounting box (21). The outer shell of the screening motor (24) is fixedly connected to the bottom of the inner box of the mounting box (21). A circular rotating plate (241) is coaxially fixed to the end of the output shaft of the screening motor (24). The rotating plate (241) is spaced apart from the inner wall of the mounting box (21). The plate surface of the rotating plate (241) facing away from the screening motor (24) is flush with the outer side wall of the shaking frame (22) near the side wall of the mounting box (21). The screening motor (24) is always aligned with the shaking frame (22). The rotating plate (241) is positioned at intervals, with hinge columns (224) fixedly connected to both the plate surface of the rotating plate (241) away from the screening motor (24) and the outer wall of the shaking frame (22). The hinge columns (224) on the plate surface of the rotating plate (241) and the hinge columns (224) on the outer wall of the shaking frame (22) are hinged to each other through a hinge plate (25). The screening motor (24) drives the shaking frame (22) to reciprocate along the axis of the connecting column (211) through the rotating plate (241), the hinge columns (224) and the hinge plate (25).

7. A wet granulation machine according to claim 6, characterized in that: The hinge post (224) on the surface of the rotating plate (241) is offset from the center of the rotating plate (241).

8. A wet granulation machine according to claim 1, characterized in that: An electric push rod (142) is provided inside the end of the discharge pipe (14) away from the granulation tank (11). The outer wall of the electric push rod (142) is fixedly connected to the inner wall of the discharge pipe (14). The push rod of the electric push rod (142) faces the granulation tank (11). The end of the push rod of the electric push rod (142) is coaxially fixedly connected to a discharge piston (141). The discharge piston (141) is adapted to the inner wall of the discharge pipe (14). The peripheral wall of the discharge piston (141) slides against the peripheral wall of the discharge pipe (14).

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