High-purity multi-material mixing pharmaceutical equipment based on energy-saving motor

Abstract

This invention discloses a high-purity multi-material mixing pharmaceutical equipment based on an energy-saving electric motor, comprising a tank body with multiple receiving trays arranged in a ring above the inner cavity of the tank. Multiple lifting blades are positioned above the stirring shaft, each above a receiving tray. A distributing tray is located in the middle of the stirring shaft. This invention relates to the field of pharmaceutical equipment technology, eliminating the need for a separate intermediate buffer silo. The tank body can directly connect to upstream and downstream pharmaceutical production lines. Multiple upstream feed pipes can continuously transport various raw materials without interruption. The bottom cavity temporarily stores the mixed materials and simultaneously coordinates with downstream granulation and tableting processes to achieve intermittent quantitative feeding, adapting to continuous production lines and solving the problems of traditional equipment that can only mix batches, store offline, and cannot be mixed and retrieved online.

Description

Technical Field

[0001] This invention relates to the field of pharmaceutical equipment technology, specifically to a high-purity multi-material mixing pharmaceutical equipment based on an energy-saving electric motor. Background Technology

[0002] In the pharmaceutical granule raw material processing and production process, traditional multi-material mixing equipment puts various pharmaceutical granule raw materials into the mixing tank and relies on the stirring paddle at the bottom of the tank to stir and mix the raw materials that are concentrated in the tank. After the raw materials in the whole tank are stirred, the machine needs to be stopped and all the mixed materials are discharged and transferred to the transfer silo for storage. When the mixed raw materials are needed in subsequent deep processing processes such as granulation and tableting, they are transferred from the silo for use.

[0003] Modern pharmaceutical production lines have continuous upstream and downstream processes. Existing transfer silos are offline buffer structures, which are completely unsuitable for continuous production line operations. This is because transfer silos can only store large batches of mixed materials and cannot achieve on-demand mixing and retrieval of materials or quantitative intermittent feeding. The continuous feeding and mixing at the front end of the production line cannot match the intermittent retrieval of materials at the back end of the granulation process. The material transfer can only be controlled by manually stopping the machine in stages. In addition, the material buffer in the silos has a fixed storage capacity limit. When there are small fluctuations in the upstream feeding speed and the downstream granulation retrieval speed, the silos are prone to overflow or shortage problems. The production line is frequently started and stopped for adjustments, which reduces the overall processing efficiency.

[0004] Furthermore, relying on transfer silos to transport materials can lead to powder loss. Dust generated during the conveying and unloading stages can easily attract environmental impurities, reducing the overall purity of the medicine. Additionally, when the mixed material is stored statically in the silo for extended periods, it is highly susceptible to compaction and agglomeration due to factors such as electrostatic adsorption, moisture absorption by fine powder particles, and gravitational compression. After being transferred to the granulation process, large clumps of material require further processing, adding to the overall process flow. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a high-purity multi-material mixing pharmaceutical equipment based on an energy-saving electric motor, which solves the problem that existing mixing equipment can only perform single mixing operations and cannot be adapted to assembly line production and processing.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a high-purity multi-material mixing pharmaceutical equipment based on an energy-saving electric motor, comprising a tank body and a stirring main shaft rotating inside the tank body. The stirring main shaft is provided with a main stirring paddle at the bottom and an energy-saving electric motor at the top. Multiple feed pipes are connected to the tank body, and multiple receiving trays are provided above the inner cavity of the tank body. The multiple feed pipes are arranged in a one-to-one correspondence with the multiple receiving trays and are located above the receiving trays. The receiving trays are arranged in a ring, so that a discharge port is formed between the center of each receiving tray and the main shaft. Multiple lifting blades are arranged above the mixing main shaft, and the multiple lifting blades are located above each receiving tray. A material leakage screen is arranged on the receiving tray. A material distribution plate is provided in the middle of the mixing main shaft; wherein, the material on the upper receiving plate falls through the material leakage screen and the material drop outlet to the lower receiving plate, and then falls through the lowest material drop outlet to the material distribution plate.

[0007] Preferably, the receiving tray includes a first receiving tray, a second receiving tray and a third receiving tray arranged sequentially from top to bottom. A first mixing chamber is formed between the first receiving tray and the top surface of the inner cavity of the tank. A second mixing chamber is formed between the second receiving tray and the first receiving tray. A third mixing chamber is formed between the third receiving tray and the second receiving tray. The discharge port includes a first discharge port formed inside the first receiving tray, a second discharge port formed inside the second receiving tray, and a third discharge port formed inside the third receiving tray.

[0008] Preferably, the first receiving tray, the second receiving tray, and the third receiving tray each have an inclined body connected to the tank body and a flat body connected to the bottom of the inclined body, and the material leakage mesh is disposed on the flat body.

[0009] Preferably, the third discharge port is provided with a plurality of guide cylinders fixed to the stirring main shaft. The plurality of guide cylinders are arranged circumferentially around the stirring main shaft and form a cylindrical shape, and a discharge clamping cavity is formed inside the guide cylinders; the guide cylinders are located above the distribution plate.

[0010] Preferably, the material distribution plate is circular, and a plurality of raised ribs are provided protruding upward from the inner edge to the outer edge of the material distribution plate. A groove is formed between two adjacent raised ribs. The groove is inclined downward from the inner edge to the outer edge to form a discharge end, and each groove has a through strip groove.

[0011] Preferably, the cross-section of the lifting blade is arc-shaped, including a fixing part and a lifting part, and the lifting part is located above the material leakage mesh.

[0012] Preferably, the lifting section has multiple openings, which are strip-shaped and extend along the length of the lifting section.

[0013] Preferably, the first mixing chamber, the second mixing chamber and the third mixing chamber are provided with a guide plate. The guide plate is arc-shaped and has arc-shaped raised ribs on its surface. The back of the guide plate is provided with a back plate fixed to the inner wall of the tank. The guide plate includes a receiving part at the closed end and a tailing part at the open end. The receiving part is located below the feed pipe.

[0014] Preferably, the cross-sectional width of the receiving section is A, and the cross-sectional width of the tail section is B, wherein A > B, and the cross-sectional width gradually narrows from the receiving section to the tail section in the top view projection.

[0015] Preferably, a leaf root is formed at the connection between the guide plate and the back plate, and a leaf edge is formed on the inner edge of the guide plate, wherein the upper surface of the guide plate is inclined downward from the leaf root to the leaf edge.

[0016] The beneficial effects of this invention are as follows: By using the high-purity multi-material mixing pharmaceutical equipment based on an energy-saving electric motor provided by this invention, compared with the prior art, the independent transfer and buffer silo is eliminated, the tank can be directly connected to the upstream and downstream pharmaceutical production lines, multiple upstream feed pipes can continuously transport various raw materials without interruption, the bottom cavity temporarily stores the mixed materials and simultaneously cooperates with the downstream granulation and tableting processes to achieve intermittent quantitative feeding, adapting to continuous production lines, and solving the problems of traditional equipment that can only mix in batches, store offline, and cannot be mixed and retrieved online.

[0017] The multi-layered material receiving tray, guide tray, lifting blades, and distribution tray form a multi-stage material feeding and mixing structure. Multiple raw materials can be continuously fed in layers. The raw materials are pre-dispersed by the guide tray, lifted and convected by the lifting blades, diverted by the leakage mesh tray, and scattered in multiple directions by the distribution tray to achieve multi-stage layer-by-layer pre-mixing. The inner diameter of the material discharge port of each level of the multi-layered material receiving tray increases progressively. Combined with the arc-shaped lifting blades with openings and the gradually wide diverting guide tray, the materials repeatedly interweave and blend during the progressive falling process to achieve thorough mixing, which greatly improves the uniformity of mixing multiple medicines.

[0018] The third discharge port is equipped with a guide cylinder and a distribution plate surrounding the main shaft, forming a triple dispersion form of vertical discharge, circumferential throwing, and slotted leakage. The upper layer of falling material and the material thrown out by the distribution plate are cross-mixed again, and the superposition of multiple discharge and stirring shortens the mixing time.

[0019] The main stirring paddle at the bottom of the tank allows the mixed material to fall directly into the bottom cavity of the tank for temporary storage. During the temporary storage process, the main stirring paddle agitates the material at the bottom, preventing the material from being squeezed, clumped, or agglomerated due to prolonged standing. This eliminates the need for post-processing procedures in the intermediate material silo, simplifying the overall pharmaceutical process. Attached Figure Description

[0020] Figure 1 This is a front view of the present invention; Figure 2 This is the front view of the present invention; Figure 3 This is a schematic diagram of the material receiving tray distribution of the present invention; Figure 4 For the present invention Figure 2 Enlarged structural diagram at point A in the middle; Figure 5This is a schematic diagram of the material lifting blade structure of the present invention; Figure 6 This is a schematic diagram of the material distribution disc structure of the present invention; Figure 7 This is a schematic diagram of the material guide plate structure of the present invention; Figure 8 This is a top view of the feed tray of the present invention.

[0021] Explanation of the reference numerals in the figure: 1. Tank body, 2. Feed pipe, 3. Guide plate, 4. First receiving plate, 5. Second receiving plate, 6. Third receiving plate, 7. First mixing chamber, 8. Second mixing chamber, 9. Third mixing chamber, 10. Stirring shaft, 11. Distribution plate, 12. Main stirring paddle, 13. Lifting blade, 131. Fixing part, 132. Lifting part, 133. Opening, 14. Leakage screen, 15. First discharge port, 16. Second discharge port, 17. Third discharge port, 18. Guide cylinder, 19. Discharge clamping chamber, 20. Raised rib, 21. Groove, 22. Discharge end, 23. Strip groove, 24. Welcoming part, 25. Tail part, 26. Blade root, 27. Blade edge, 28. Back plate, 29. Raised rib. Detailed Implementation

[0022] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Various changes can be made to the implementation schemes as long as the effects of the present invention can be achieved.

[0024] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0025] like Figures 1 to 8 As shown in the figure, this application proposes a high-purity multi-material mixing pharmaceutical equipment based on an energy-saving electric motor, including a tank 1 and a stirring shaft 10 rotating inside the tank 1. A main stirring paddle 12 is provided at the bottom of the stirring shaft 10, and an energy-saving electric motor is provided at the top. Multiple feed pipes 2 are connected to the tank 1, and a solenoid valve is provided at the bottom of the tank 1. It should be noted that the top of the feed pipes 2 is connected to a material box, and the material box and the motor are located on the second floor of the building, while the tank 1 is located on the first floor of the building. The stirring shaft 10 and the feed pipes 2 both penetrate through the building.

[0026] To prevent the accumulation of pharmaceutical raw materials when the feed pipe 2 falls into the tank 1, in this embodiment, multiple receiving trays are provided above the inner cavity of the tank 1. Each feed pipe 2 corresponds to one of the multiple receiving trays, and the connection points between the feed pipes 2 and the tank 1 are located above the receiving trays, allowing the pharmaceutical raw materials falling from the feed pipes 2 to land on the receiving trays. For example, in this embodiment, the receiving trays are arranged in a ring, with a discharge port formed between the center of each receiving tray and the main shaft 10. As the material on the receiving tray gradually becomes evenly distributed along its surface, it falls downwards into the tank 1 through the discharge port.

[0027] like Figure 2 and Figure 3 As shown, the receiving trays in this embodiment include a first receiving tray 4, a second receiving tray 5, and a third receiving tray 6 arranged sequentially from top to bottom. A first mixing chamber 7 is formed between the first receiving tray 4 and the top surface of the inner cavity of the tank 1; a second mixing chamber 8 is formed between the second receiving tray 5 and the first receiving tray 4; and a third mixing chamber 9 is formed between the third receiving tray 6 and the second receiving tray 5. In an exemplary implementation scenario, there are three feed pipes 2, each connected to the first mixing chamber 7, the second mixing chamber 8, and the third mixing chamber 9, and located above the first receiving tray 4, the second receiving tray 5, and the third receiving tray 6, so that the pharmaceutical raw materials falling from the feed pipes 2 fall onto the first receiving tray 4, the second receiving tray 5, and the third receiving tray 6, respectively.

[0028] In addition, the aforementioned material discharge port, such as Figure 3 As shown, the system includes a first discharge port 15 formed inside the first receiving tray 4, a second discharge port 16 formed inside the second receiving tray 5, and a third discharge port 17 formed inside the third receiving tray 6. In practice, the pharmaceutical raw materials on the first receiving tray 4 fall through the first discharge port 15 onto the second receiving tray 5, where they come into contact with the pharmaceutical raw materials on the second receiving tray 5 for a first-step mixing. Then, the pharmaceutical raw materials on the second receiving tray 5 fall through the second discharge port 16 onto the third receiving tray 6, where they come into contact with the pharmaceutical raw materials on the third receiving tray 6 for a second-step mixing. Finally, the pharmaceutical raw materials on the third receiving tray 6 fall through the third discharge port 17.

[0029] In this embodiment, the inner diameter of the first discharge port 15 is a, the inner diameter of the second discharge port 16 is b, and the inner diameter of the third discharge port is c, wherein a < b < c, so that the pharmaceutical raw materials can slide down sequentially on each receiving tray.

[0030] In this embodiment, a discharge mesh tray 14 is provided on each receiving tray. The first receiving tray 4, the second receiving tray 5, and the third receiving tray 6 each have an inclined body connected to the tank body 1 and a flat body connected to the bottom of the inclined body. The discharge mesh tray 14 is disposed on the flat body. In an exemplary implementation scenario, the pharmaceutical raw materials on the first receiving tray 4 fall down onto the second receiving tray 5 through the discharge mesh tray 14 and the first discharge port 15. The pharmaceutical raw materials on the second receiving tray 5 fall onto the third receiving tray 6 through the discharge mesh tray 14 and the second discharge port 16. This causes the pharmaceutical raw materials to fall in two dispersed locations from the discharge mesh tray 14 and each discharge port. The dual-location and dispersed falling allows the pharmaceutical raw materials to mix in multiple processes of dispersion, falling, and contact.

[0031] like Figure 3 As shown, in order to further increase the mixing effect of the pharmaceutical raw materials on each receiving tray, multiple lifting blades 13 are provided above the mixing shaft 10. The multiple lifting blades 13 are located above each receiving tray, which push the pharmaceutical raw materials to be evenly distributed on each receiving tray and stir the pharmaceutical raw materials on each receiving tray when pushing, thereby further increasing the mixing effect of the pharmaceutical raw materials.

[0032] Preferably, in this embodiment, the lifting blade 13 is as follows: Figure 5 As shown, its cross-section is arc-shaped, including a fixing part 131 and a lifting part 132, with the lifting part 132 located above the material strainer 14. When the lifting blades 13 rotate with the stirring shaft 10, the arc-shaped lifting part 132 contacts the pharmaceutical raw material, causing it to be propelled and lifted. Furthermore, multiple openings 133 are provided on the lifting part 132. These openings are strip-shaped and extend along the length of the lifting part 132. During repeated lifting and falling, the raw material continuously passes through the strip-shaped openings 133, achieving stratification and diversion. The material passing through the openings forms cross-convection with the material lifted and falling back from the outside of the lifting part 132, resulting in more uniform mixing of the pharmaceutical raw material.

[0033] In this embodiment, as Figure 2 and Figure 3 As shown, to further prevent the accumulation of pharmaceutical raw materials when the feed pipe 2 falls into the tank 1, guide plates 3 are provided in the first mixing chamber 7, the second mixing chamber 8, and the third mixing chamber 9, such as... Figure 7 and Figure 8As shown, the guide plate 3 is arc-shaped with arc-shaped raised ribs 29 on its surface. A back plate 28, fixed to the inner wall of the tank 1, is provided on the back of the guide plate 3. The guide plate 3 includes a receiving section 24 at the closed end and a tailing section 25 at the open end. The receiving section 24 is located below the feed pipe 2. In practice, the raw pharmaceutical material falling from the feed pipe 2 first falls onto the guide plate 3. The arc-shaped raised ribs 29 form multiple diversion barriers. During the material's descent, it is guided and limited by the raised ribs 29. Part of it flows longitudinally down the slope of the raised ribs 29, while the other part flows and spreads to the left and right sides along the raised ribs 29, breaking up the concentrated falling material pile and allowing the raw material to be evenly spread across the entire surface of the guide plate 3.

[0034] Preferably, the cross-sectional width of the receiving section 24 is A, and the cross-sectional width of the tail section 25 is B, wherein A > B, and the cross-sectional width gradually narrows from the receiving section 24 to the tail section 25 in the top view projection. In implementation, the wider receiving section 24 can completely receive the pharmaceutical raw materials falling from the feed pipe 2. As the pharmaceutical raw materials flow from the receiving section 24 to the tail section 25, the material layer is continuously gathered and thinned as the width of the guide plate 3 gradually narrows, and the material is evenly distributed and falls along the entire edge of the tail section 25, preventing the pharmaceutical raw materials from being concentrated and poured out at a single point, and ensuring that the material flow rate falling into the mixing chamber below is evenly distributed.

[0035] A leaf root 26 is formed at the connection between the guide plate 3 and the back plate 28, and a leaf edge 27 is formed on the inner edge of the guide plate 3. The upper surface of the guide plate 3 is inclined downward from the leaf root 26 to the leaf edge 27. In implementation, since the upper surface of the guide plate 3 is inclined downward from the leaf root 26 to the leaf edge 27, the raw material of the medicine is diverted to both sides under the action of the raised rib 29, and then slides smoothly over the raised rib 29 by its own gravity along the inclined slope, so that the raw material of the medicine is evenly distributed and falls along the leaf edge 27 of the guide plate 3.

[0036] In this embodiment, a plurality of guide cylinders 18 fixed to the stirring spindle 10 are provided in the third discharge port 17. The plurality of guide cylinders 18 are arranged circumferentially around the stirring spindle 10 and are cylindrical in shape, and a discharge clamping cavity 19 is formed inside the guide cylinder 18. In practice, the raw materials of medicine falling from the third discharge port 17 are guided vertically downward by the discharge clamping cavity 19 inside the guide cylinder 18.

[0037] In this embodiment, as Figure 4As shown, a distribution plate 11 is provided in the middle of the mixing main shaft 10, and a guide cylinder 18 is located above the distribution plate 11, so that the pharmaceutical raw materials falling vertically from the discharge clamping cavity 19 directly fall onto the distribution plate 11. Among them, the material on the upper receiving plate falls onto the lower receiving plate through the leakage screen 14 and the discharge port, and then falls onto the distribution plate 11 through the lowest discharge port. When the mixing main shaft 10 drives the distribution plate 11 to rotate, the distribution plate 11 throws the received pharmaceutical raw materials around the perimeter. The pharmaceutical raw materials thrown around the perimeter come into contact again with the pharmaceutical raw materials falling from the leakage screen 14 on the third receiving plate 6. Finally, the pharmaceutical raw materials, after multiple falling and mixing, fall into the bottom of the tank 1 and are mixed by the main stirring paddle 12.

[0038] Preferably, the above-mentioned dispensing tray 11 is as follows: Figure 6 The sample is circular, with several raised ribs 20 extending upwards from the inner edge to the outer edge of the distribution plate 11. A groove 21 is formed between two adjacent raised ribs 20. The groove 21 slopes downwards from the inner edge to the outer edge to form a discharge end 22, and each groove 21 has a through-hole strip 23. When the raw pharmaceutical material falls onto the distribution plate 11, some of the raw pharmaceutical material is dispersed circumferentially by the impact of the raised ribs 20 while the distribution plate 11 is rotating. Some of the raw pharmaceutical material falls into the groove 21 and is thrown outwards, while some of the raw pharmaceutical material falls downwards through the strip 23, thus forming a multi-directional material flow that mixes with the raw pharmaceutical material falling from the discharge mesh 14.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-purity multi-material mixing pharmaceutical device based on an energy-saving electric motor, comprising a tank and a stirring shaft rotating within the tank, wherein a main stirring paddle is disposed at the bottom of the stirring shaft and an energy-saving electric motor is disposed at the top, characterized in that: The tank body is connected to multiple feed pipes, and multiple receiving trays are arranged above the inner cavity of the tank body. The multiple feed pipes and multiple receiving trays are arranged in a one-to-one correspondence and are located above the receiving trays. The receiving trays are arranged in a ring, so that a discharge port is formed between the middle of each receiving tray and the main shaft. Multiple lifting blades are arranged above the mixing main shaft, and the multiple lifting blades are located above each receiving tray. A material leakage screen is arranged on the receiving tray. A material distribution plate is provided in the middle of the mixing main shaft; wherein, the material on the upper receiving plate falls through the material leakage screen and the material drop outlet to the lower receiving plate, and then falls through the lowest material drop outlet to the material distribution plate.

2. The high-purity multi-material mixing pharmaceutical equipment based on an energy-saving electric motor according to claim 1, characterized in that: The receiving tray includes a first receiving tray, a second receiving tray, and a third receiving tray arranged sequentially from top to bottom. A first mixing chamber is formed between the first receiving tray and the top surface of the inner cavity of the tank. A second mixing chamber is formed between the second receiving tray and the first receiving tray. A third mixing chamber is formed between the third receiving tray and the second receiving tray. The discharge port includes a first discharge port formed inside the first receiving tray, a second discharge port formed inside the second receiving tray, and a third discharge port formed inside the third receiving tray.

3. The high-purity multi-material mixing pharmaceutical equipment based on an energy-saving electric motor according to claim 1, characterized in that: The first receiving tray, the second receiving tray, and the third receiving tray all have an inclined body connected to the tank body and a flat body connected to the bottom of the inclined body, and the material leakage mesh is set on the flat body.

4. The high-purity multi-material mixing pharmaceutical equipment based on an energy-saving electric motor according to claim 2, characterized in that: The third discharge port is provided with multiple guide cylinders fixed to the mixing main shaft. The multiple guide cylinders are arranged circumferentially around the mixing main shaft and form a cylindrical shape, and a discharge clamping cavity is formed inside the guide cylinder. The guide cylinder is located above the material distribution plate.

5. A high-purity multi-material mixing pharmaceutical equipment based on an energy-saving electric motor according to claim 1, characterized in that: The material distribution plate is circular, and several ribs are raised upward from the inner edge to the outer edge of the material distribution plate. A groove is formed between two adjacent ribs. The groove is inclined downward from the inner edge to the outer edge to form a discharge end, and each groove has a through strip groove.

6. The high-purity multi-material mixing pharmaceutical equipment based on an energy-saving electric motor according to claim 1, characterized in that: The lifting blade has an arc-shaped cross-section and includes a fixing part and a lifting part, with the lifting part located above the material leakage mesh.

7. A high-purity multi-material mixing pharmaceutical equipment based on an energy-saving electric motor according to claim 6, characterized in that: The lifting section has multiple openings, which are strip-shaped and extend along the length of the lifting section.

8. A high-purity multi-material mixing pharmaceutical equipment based on an energy-saving electric motor according to claim 2, characterized in that: The first mixing chamber, the second mixing chamber and the third mixing chamber are provided with guide plates. The guide plates are arc-shaped and have arc-shaped raised ribs on their surfaces. The back of the guide plate is provided with a back plate fixed to the inner wall of the tank. The guide plate includes a receiving part located at the closed end and a tailing part located at the open end. The receiving part is located below the feed pipe.

9. A high-purity multi-material mixing pharmaceutical equipment based on an energy-saving electric motor according to claim 8, characterized in that: The cross-sectional width of the receiving section is A, and the cross-sectional width of the tail section is B, wherein A > B, and the cross-sectional width gradually narrows from the receiving section to the tail section in the top view projection.

10. A high-purity multi-material mixing pharmaceutical equipment based on an energy-saving electric motor according to claim 8, characterized in that: A leaf root is formed at the connection between the guide plate and the back plate, and a leaf edge is formed on the inner edge of the guide plate. The upper surface of the guide plate is inclined downward from the leaf root to the leaf edge.

Images