A granulating device with multiple stages of screening

Abstract

This utility model provides a granulation device with multi-stage screening, relating to the field of traditional Chinese medicine preparation equipment, including a device frame; sliding reset blocks are symmetrically and slidably connected in a triangular pattern on the front and rear inner walls of the device frame, and screening plates are slidably connected alternately between the front and rear inner walls of the device frame; two drive motors are fixedly installed on the rear side wall of the device frame, and transmission rods are rotatably connected in a triangular pattern on the front and rear inner walls of the device frame; this granulation device with multi-stage screening slows down the material flow rate and prolongs the screening contact time by using cross-shaped baffles on the screening plates, which greatly improves the particle separation accuracy. The multi-layer screening structure further enhances the grading effect, ensuring effective separation of particles of different specifications and significantly improving the overall screening efficiency, providing a reliable guarantee for high-quality granulation, and solving the problems of poor screening efficiency, low efficiency, blockage and difficulty in material return, and large waste in granulation devices.

Description

Technical Field

[0001] This utility model relates to the field of traditional Chinese medicine preparation equipment technology, and in particular to a granulation device with multi-stage screening. Background Technology

[0002] Due to its advantages such as convenient administration and rapid absorption, the proportion of traditional Chinese medicine granules in clinical applications has been increasing year by year. Granulation is the core process in the production of traditional Chinese medicine granules. The process usually includes steps such as crushing, extraction, concentration, granulation, drying and screening. Among them, the screening process directly affects the particle size uniformity of traditional Chinese medicine granules. Uneven particle size will lead to large differences in the dissolution rate of granules, which will affect the efficacy and increase the difficulty of subsequent packaging and storage. Existing granulation equipment has high material sliding speed, short residence time and insufficient contact on the screening plate, low separation accuracy, and difficulty in the classification function of multi-layer screening. The overall efficiency does not match the requirements of high-quality granulation. Moreover, the lack of directional aggregation structure makes it easy for material to accumulate and blockage. It is inconvenient to collect qualified granules, and it is difficult to efficiently return unqualified granules, resulting in a large waste of raw materials and a low granulation qualification rate. Utility Model Content

[0003] This utility model relates to a granulation device with multi-stage screening, which solves the problems mentioned in the background art of existing granulation devices, such as high material sliding speed on the screening plate, insufficient contact, low separation accuracy, difficulty in achieving classification effect in multi-stage screening, and efficiency that does not meet the requirements of high-quality granulation; and the non-directional agglomeration structure is prone to material accumulation and blockage, making it difficult to collect qualified particles and difficult to efficiently return unqualified particles, resulting in large raw material waste and low qualification rate.

[0004] This utility model provides a granulation device with multi-stage screening, specifically including: a device frame; sliding reset blocks are symmetrically and slidably connected in a triangular shape on the front and rear inner walls of the device frame; screening plates are slidably connected alternately between the front and rear inner walls of the device frame; two drive motors are fixedly installed on the rear side wall of the device frame; and transmission rods are rotatably connected in a triangular shape on the front and rear inner walls of the device frame.

[0005] Furthermore, the front and rear inner walls of the device frame are provided with sliding guide grooves in a triangular pattern. A sliding reset block is slidably connected in the sliding guide groove. The round rod at one end of the sliding reset block is slidably connected in the vertical side wall of the sliding guide groove. A reset spring is sleeved on the outside of the round rod of the sliding reset block.

[0006] Furthermore, three layers of material-gathering plates are staggered between the front and rear side walls of the device frame. A rectangular opening is provided at the lowest point of the material-gathering plate, a discharge port is provided in the middle of the slightly lower side of the material-gathering plate, a sliding guide groove is provided at the top of the higher side of the material-gathering plate, and a discharge port is provided at the lowest point of the bottom material-gathering plate of the device frame.

[0007] Furthermore, the screening plates are slidably connected to the top of the material-gathering plate between the front and rear inner walls of the device frame and have gaps. The front and rear rotating shafts of the inclined screening plates are slidably connected to the sliding guide groove of the device frame and located on one side of the sliding reset block. The upper surface of the screen plate has transverse baffles distributed in a cross shape. A discharge nozzle is provided in the middle of one side of the bottom end of the screening plate and is slidably connected to the discharge port on one side of the material-gathering plate.

[0008] Furthermore, the transmission rods, which are triangularly distributed and rotatably connected in the front and rear side walls of the device frame, are equipped with distribution wheels at both ends. The distribution wheels have three eccentric protrusions that are slidably connected to the side wall of the rotating shaft of the screening plate. The rear ends of the two transmission rods on the upper side of the device frame are connected to the drive shaft of the drive motor. The front ends of the two transmission rods on the right side of the device frame are fixedly connected with transmission gears, and the two transmission gears are connected by a transmission belt.

[0009] Furthermore, a pelletizer is fixedly installed at the top center of the device frame, and negative pressure back suction pipes are fixedly connected to the top of the left and right sides of the pelletizer. The bottom of the two negative pressure back suction pipes are respectively connected to the discharge port of the two layers of material plates on the device frame.

[0010] This invention provides a granulation device with multi-stage screening, which has the following beneficial effects:

[0011] 1. The drive motor converts the rotational motion into the reciprocating sliding motion of the screening plate via the transmission rod and the distribution wheel. At the same time, the sliding reset block provides stable reset support and elastic buffer for the screening plate under the action of the sliding guide groove and the reset spring, effectively avoiding motion interference and ensuring the coordinated operation of each layer of screening plates. The cross-shaped baffles on the screening plate slow down the material flow rate, prolong the screening contact time, and greatly improve the particle separation accuracy. The multi-layer screening structure further enhances the grading effect, which not only ensures the effective separation of particles of different specifications, but also significantly improves the overall screening efficiency, providing a reliable guarantee for high-quality granulation.

[0012] 2. The staggered distribution and directional flow structure of the three-layer aggregate plates prevent material accumulation and guide the particles to flow precisely to the corresponding outlet. The bottom discharge port facilitates the centralized collection of qualified particles, while the negative pressure back suction pipe connected to the discharge ports of the upper two aggregate plates constructs a closed-loop system of "unqualified particles - back suction - secondary granulation", which greatly reduces raw material waste and significantly improves the granulation qualification rate. The granulation, screening, return, and discharge links in the overall process are seamlessly connected, reducing manual intervention. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0014] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0015] In the attached diagram:

[0016] Figure 1 This is a schematic diagram of the left front side axial view structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure from a bottom view on the right rear side of this utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the device frame of this utility model;

[0019] Figure 4 This is a cross-sectional view of the frame structure of the device of this utility model;

[0020] Figure 5 This is a schematic diagram showing the disassembled structure of the screening plate and transmission rod of this utility model;

[0021] Figure 6 This is a schematic diagram of the screening plate structure of this utility model.

[0022] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0023] 1. Equipment frame; 101. Granulator; 102. Sliding guide chute; 103. Gathering plate; 104. Discharge port; 105. Feed outlet; 106. Negative pressure suction pipe; 2. Sliding reset block; 201. Reset spring; 3. Screening plate; 301. Baffle plate; 302. Discharge nozzle; 4. Drive motor; 5. Transmission gear; 6. Transmission toothed belt; 7. Transmission rod; 701. Divider wheel. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] Example 1: As shown in the attached document Figure 1 To be continued Figure 6 As shown:

[0026] This utility model provides a granulation device with multi-stage screening, comprising: a device frame 1, wherein sliding reset blocks 2 are symmetrically and slidably connected in a triangular pattern on the front and rear inner walls of the device frame 1; screening plates 3 are slidably connected alternately between the front and rear inner walls of the device frame 1; two drive motors 4 are fixedly installed on the rear side wall of the device frame 1; transmission rods 7 are rotatably connected in a triangular pattern on the front and rear inner walls of the device frame 1; sliding guide grooves 102 are provided in a triangular pattern on both the front and rear inner walls of the device frame 1; sliding reset blocks 2 are slidably connected in the sliding guide grooves 102; and one end of the sliding reset block 2 is circular. The rod is slidably connected in the vertical side wall of the sliding guide groove 102. A reset spring 201 is sleeved on the outer side of the round rod of the sliding reset block 2. Specifically, the sliding guide groove 102 forms a guide limit for the sliding reset block 2. With the elastic force of the reset spring 201, the sliding reset block 2 can automatically reset after being subjected to force, thereby providing stable reset support for the screening plate 3. At the same time, it cooperates with the transmission structure of the subsequent transmission rod 7 to provide basic elastic buffer for the reciprocating sliding of the screening plate 3, ensuring that the screening plate 3 always maintains a stable movement trajectory during the screening process, laying a structural foundation for the smooth progress of multi-stage screening.

[0027] The device frame 1 has three layers of material-gathering plates 103 staggered between its front and rear side walls. A rectangular opening is located at the lowest point of each material-gathering plate 103. A discharge port 104 is located in the middle of the slightly lower side of each material-gathering plate 103. A sliding guide groove 102 is located at the top of the uppermost side of each material-gathering plate 103. A discharge port 105 is located at the lowest point of the bottommost material-gathering plate 103 of the device frame 1. A granulator 101 is fixedly installed at the top middle of the device frame 1. Negative pressure back-suction pipes 106 are fixedly connected to the top of the left and right sides of the granulator 101. The bottoms of the two negative pressure back-suction pipes 106 are respectively connected to the two layers of material-gathering plates 103 on the device frame 1. At the discharge port 104 of 03, the specific function is that the three-layer staggered material-gathering plates 103 can form a graded flow guide for the screened material. The rectangular opening at the lowest point and the discharge port 104 can guide the directional flow of materials after screening at different levels, avoiding material accumulation. The discharge port 105 of the bottom material-gathering plate 103 can centrally discharge the final qualified particles. Meanwhile, the negative pressure back suction pipe 106 sucks back the unqualified particles from the discharge ports 104 of the upper two material-gathering plates 103 to the granulator 101, realizing the secondary granulation of unqualified particles, forming a "granulation-screening-return" cycle system, improving the raw material utilization rate and granulation qualification rate.

[0028] Among them, the screening plate 3 is slidably connected to the top of the material-gathering plate 103 between the front and rear inner walls of the device frame 1 and has a gap. The front and rear rotating shafts of the inclined screening plate 3 are slidably connected to the sliding guide groove 102 of the device frame 1 and are located on one side of the sliding reset block 2. The upper surface of the screen plate 3 has transverse baffles 301 distributed in a cross shape. The bottom end of the screening plate 3 is provided with a discharge nozzle 302 in the middle of one side. The discharge nozzle 302 is slidably connected to the discharge port 104 on one side of the material-gathering plate 103. Specifically, the gap between the top of the screening plate 3 and the material-gathering plate 103... The gap provides space for material screening. The inclined arrangement utilizes gravity to assist material flow. Its high-end rotating shaft, in conjunction with the sliding guide groove 102 and the sliding reset block 2, can achieve reciprocating sliding screening under the control of the transmission rod 7. The cross-shaped baffles 301 can slow down the material sliding speed, increase the material's residence time on the screening plate 3, and improve screening accuracy. The sliding connection between the discharge nozzle 302 and the discharge port 104 of the material gathering plate 103 can keep the material stably discharged when the screening plate 3 moves, ensuring that the screened material accurately enters the corresponding level of the material gathering plate 103.

[0029] In this device, the transmission rods 7, which are triangularly distributed and rotatably connected in the front and rear side walls of the frame 1, are equipped with distribution wheels 701 at both ends. Each distribution wheel 701 has three eccentric protrusions that are slidably connected to the side wall of the rotating shaft end of the screening plate 3. The rear ends of the two transmission rods 7 on the upper side of the frame 1 are connected to the drive shaft of the drive motor 4. The front ends of the two transmission rods 7 on the right side of the frame 1 are fixedly connected to transmission gears 5. The two transmission gears 5 are connected by a transmission belt 6. Specifically, the drive motor 4 drives the transmission rods 7 to rotate. The eccentric protrusions of the distribution wheels 701 slide with the rotating shaft end of the screening plate 3, which can convert the rotational motion into the reciprocating sliding of the screening plate 3 to achieve the screening action. The two transmission rods 7 on the right side are connected by the transmission gears 5 and the transmission belt 6 to ensure that multiple transmission rods 7 rotate synchronously, thereby enabling the multi-layer screening plate 3 to move in a coordinated manner, avoiding motion interference, enhancing the synchronization and stability of multi-stage screening, and improving the overall screening efficiency.

[0030] The specific usage and function of this embodiment are as follows:

[0031] When using this multi-stage screening granulation device, firstly, start the granulator 101 at the top of the device frame 1 to perform granulation. The granules produced by the granulator 101 fall onto the staggered screening plates 3 below. Simultaneously, start the two drive motors 4 on the rear side wall of the device frame 1. The drive motors 4 drive the upper transmission rods 7 to rotate. The two right-side transmission rods 7 rotate synchronously through the cooperation of the transmission gears 5 and the transmission belt 6, so that the triangularly distributed transmission rods 7 rotate stably. The eccentric protrusions of the distribution wheels 701 at both ends of the transmission rods 7 slide with the shaft end of the screening plate 3, converting the rotational motion into the reciprocating sliding of the screening plate 3. The sliding reset block 2 provides reset support for the screening plate 3 under the action of the sliding guide groove 102 and the reset spring 201. Elastic buffering ensures screening stability. During the screening process, the screening plate 3 is inclined and the baffles 301 distributed in a cross shape on its upper end face slow down the sliding speed of the material and improve the screening accuracy. Particles that meet the specifications fall into the lower aggregate plate 103 through the gap between the screening plate 3 and the top of the aggregate plate 103. Particles that do not meet the specifications slide into the discharge port 104 of the corresponding aggregate plate 103 through the discharge nozzle 302 at the bottom of the screening plate 3. Unqualified particles at the discharge ports 104 of the upper two aggregate plates 103 are drawn back to the granulator 101 through the negative pressure back suction pipe 106 for secondary granulation. Finally, qualified particles fall to the bottom aggregate plate 103 and are discharged from the discharge port 105 at its lowest point, completing the complete operation process of "granulation-multi-stage screening-returning-discharge".

[0032] Example 2:

[0033] Based on the original screening plate 3, the screening plate 3 is designed as a combination structure of "frame + detachable screen": the metal frame of the screening plate 3 has an annular groove on the inner side, and the edge of the screen has an elastic strip that matches the groove. The screen is fixed to the frame by the strip, and the two sides of the frame are provided with auxiliary fixing hand-tightening bolts. The screen can be replaced with different mesh sizes according to the target particle specifications. When replacing, simply loosen the bolts and remove the old screen to install the new screen.

Claims

1. A granulation device with multi-stage screening, characterized in that, The device includes a frame (1); sliding reset blocks (2) are symmetrically and slidably connected in a triangular pattern on the front and rear inner walls of the frame (1); screening plates (3) are slidably connected between the front and rear inner walls of the frame (1); two drive motors (4) are fixedly installed on the rear side wall of the frame (1); and transmission rods (7) are rotatably connected in a triangular pattern on the front and rear inner walls of the frame (1).

2. The granulation device with multi-stage screening according to claim 1, characterized in that, The device frame (1) has sliding guide grooves (102) arranged in a triangular shape on both the front and rear inner walls. A sliding reset block (2) is slidably connected in the sliding guide groove (102). A round rod at one end of the sliding reset block (2) is slidably connected in the vertical side wall of the sliding guide groove (102). A reset spring (201) is sleeved on the outside of the round rod of the sliding reset block (2).

3. The granulation device with multi-stage screening according to claim 1, characterized in that, The device frame (1) has three layers of material-gathering plates (103) staggered between its front and rear side walls. A rectangular opening is provided at the lowest point of the material-gathering plate (103). A discharge port (104) is provided in the middle of the slightly lower side of the material-gathering plate (103). A sliding guide groove (102) is provided at the top of the upper side of the material-gathering plate (103). A discharge port (105) is provided at the lowest point of the bottom material-gathering plate (103) of the device frame (1).

4. A granulation device with multi-stage screening according to claim 1, characterized in that, The screening plate (3) is alternately slidably connected to the top of the material gathering plate (103) between the front and rear inner walls of the device frame (1) and has a gap. The high-end front and rear rotating shafts of the screening plate (3) are slidably connected to the sliding guide groove (102) of the device frame (1) and located on one side of the sliding reset block (2). The upper surface of the screen plate (3) has transverse baffles (301) distributed in a cross shape. The bottom end of the screening plate (3) is provided with a discharge nozzle (302) in the middle of one side. The discharge nozzle (302) is slidably connected to the discharge port (104) on one side of the material gathering plate (103).

5. A granulation device with multi-stage screening according to claim 1, characterized in that, The transmission rods (7) of the device frame (1) are arranged in a triangular shape and rotated in the front and rear side walls. Both ends of the transmission rods (701) are provided with a distributing wheel (701). The distributing wheel (701) is provided with three eccentric protrusions and is slidably connected to the side wall of the rotating shaft of the screening plate (3). The rear ends of the two transmission rods (7) on the upper side of the device frame (1) are connected to the drive shaft of the drive motor (4). The front ends of the two transmission rods (7) on the right side of the device frame (1) are fixedly connected with transmission gears (5). The two transmission gears (5) are connected by a transmission toothed belt (6).

6. A granulation device with multi-stage screening according to claim 1, characterized in that, A pelletizer (101) is fixedly installed at the top center of the device frame (1). Negative pressure back suction pipes (106) are fixedly connected to the top of the left and right sides of the pelletizer (101). The bottom of the two negative pressure back suction pipes (106) are respectively connected to the discharge port (104) of the two layers of material gathering plates (103) on the device frame (1).

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