A raw material mixing device

Abstract

The present application relates to the technical field of material mixing, and provides a raw material mixing device, including a mixing tank body, a stirring assembly and a filter grinder, wherein the mixing tank body is connected with a plurality of feed pipes; the stirring assembly includes a driving source and a stirring shaft, the stirring shaft is rotatably connected to the mixing tank body, and the driving source is used to drive the stirring shaft to rotate; the filter grinder is arranged in the mixing tank body, including a filter barrel and a grinding plate, the filter barrel is sleeved outside the stirring shaft and fixedly connected to the stirring shaft, one end of the filter barrel is closed, a discharge hole is provided on the filter barrel, and a stirring blade is fixed on the outer wall of the filter barrel; the grinding plate is slidably arranged in the filter barrel, and a feed cavity is formed between the grinding plate and the inner wall of the filter barrel, the feed pipe is connected with the feed cavity, and the driving source is also used to drive the grinding plate to slide. The present application can improve the mixing uniformity of materials.

Description

Technical Field

[0001] The present application relates to the technical field of material mixing in the bio-industry, and in particular to a raw material mixing device. Background Art

[0002] Mixing devices are mechanical equipment used to evenly mix raw materials of different components to ensure that the final product has the required performance and quality. In many industrial fields such as chemical, biopharmaceutical, food, and building materials, mixing devices are indispensable key equipment on the production line. Its main function is to mix multiple raw materials according to certain proportions and process requirements to achieve the expected physical or chemical properties, thereby meeting the needs of subsequent production or processing.

[0003] A mixing device usually consists of a container, a stirring system, a transmission system and a control system. The container is used to hold the paint to be mixed. The stirring system is one of the core components of the mixing device, which usually consists of a stirring shaft driven by a motor and stirring blades installed on it. The shape, size and arrangement of the stirring blades will directly affect the mixing effect. The transmission system is responsible for transmitting power from the motor to the stirring system. The control system can set parameters such as mixing time and speed through a touch screen or computer interface to achieve automatic operation. In addition, some mixing devices are also equipped with functions such as temperature control and pressure monitoring to meet the special needs of different materials.

[0004] When a mixing device is stirring and mixing fluid materials or powdered materials, if there is agglomeration in the materials, the agglomerated materials will be difficult to be fully dispersed, resulting in uneven distribution of components in the final product, which will affect the performance consistency of the product. Summary of the invention

[0005] In order to improve the mixing uniformity of materials, the present application provides a raw material mixing device.

[0006] The present application provides a raw material mixing device, which adopts the following technical solution:

[0007] A raw material mixing device, comprising:

[0008] A mixing tank body, wherein a plurality of feed pipes are connected to the mixing tank body;

[0009] A stirring assembly, comprising a driving source and a stirring shaft, wherein the stirring shaft is rotatably connected to the mixing tank body, and the driving source is used to drive the stirring shaft to rotate;

[0010] The filter grinder is arranged in the mixing tank body, and includes a filter barrel and a grinding plate. The filter barrel is sleeved outside the stirring shaft and fixedly connected to the stirring shaft. One end of the filter barrel is closed, and a discharge hole is opened on the filter barrel. A stirring blade is fixed on the outer wall of the filter barrel. The grinding plate is slidably arranged in the filter barrel, and a feed cavity is formed between the grinding plate and the inner wall of the filter barrel. The feed pipe is connected to the feed cavity, and the driving source is also used to drive the grinding plate to slide.

[0011] By adopting the above technical solution, the material line enters the feed chamber along the feed pipe, and the grinding plate slides towards the closed end of the filter barrel under the drive of the driving source until it contacts the closed end of the filter barrel. The grinding plate can squeeze the material in the feed chamber along the discharge hole and effectively break up the agglomerated material. When the filter barrel rotates, it drives the stirring blade to rotate, further stirring the material discharged from the feed chamber to improve the mixing effect.

[0012] Optionally, a guide assembly is provided in the mixing tank body, and the guide assembly includes a plurality of guide vertical rods arranged in parallel; one end of the guide vertical rod is fixed to the mixing tank body, and the other end passes through the grinding plate and enters the filter barrel;

[0013] The outer wall of the stirring shaft is provided with threads, and the stirring shaft is threadedly connected to the grinding plate.

[0014] By adopting the above technical solution, the setting of the guide assembly can effectively guide the grinding plate to slide along a predetermined path, ensuring that the grinding plate remains stable during the sliding process. The thread on the outer wall of the stirring shaft realizes the threaded connection between the stirring shaft and the grinding plate. When the driving source drives the stirring shaft to rotate, it can also drive the grinding plate to slide in the vertical direction at the same time.

[0015] Optionally, the stirring shaft is hollow, a shaft section of the stirring shaft outside the mixing tank body is provided with a primary mixing shell, the primary mixing shell is fixed to the mixing tank body, and the feed pipe is connected to the primary mixing shell;

[0016] A feeding port is provided on the shaft section of the stirring shaft located in the primary mixing shell, and a discharging port is provided on the shaft section of the stirring shaft located in the filter cartridge.

[0017] By adopting the above technical solution, the hollow setting of the stirring shaft can achieve the purpose of guiding the material. After the material is discharged into the feed pipe, the material enters the primary mixing shell along the feed pipe, then enters the stirring shaft from the feed port, and then flows into the feed cavity along the discharge port, so as to indirectly realize the connection between the feed pipe and the feed cavity.

[0018] Optionally, two filter grinders are arranged on the stirring shaft at intervals, and one filter grinder is arranged 180° rotationally symmetrically with respect to the other filter grinder;

[0019] The guide assembly is also provided with two groups corresponding to the filter grinder, and the two sections of threads on the stirring shaft located in the two filter material barrels have opposite rotation directions.

[0020] By adopting the above technical solution, two filter grinders are arranged at intervals on the stirring shaft, and two groups of guide components are also arranged corresponding to the filter grinders. The two sections of threads on the stirring shaft located in the two filter material barrels rotate in opposite directions, so that when the driving source drives the stirring shaft to rotate, the two filter grinders can grind and filter the material at the same time, effectively improving the material grinding efficiency.

[0021] Optionally, a convection mixing cylinder is arranged between the two filter grinders, and the convection mixing cylinder is sleeved outside the stirring shaft; a connecting rod is fixed on the outer side wall of the convection mixing cylinder, and one end of the connecting rod is fixed on the inner side wall of the mixing tank body;

[0022] The discharge hole is opened at the closed end of the filter barrel, and the discharge hole is communicated with the convection mixing barrel. A discharge nozzle is arranged on the outer side wall of the convection mixing barrel.

[0023] By adopting the above technical solution, the convection mixing barrel between the two filter grinders can further improve the mixing uniformity of the materials. The discharge hole is opened at the closed end of the filter barrel and is connected to the convection mixing barrel, so that the materials ground by the grinding plate can smoothly enter the convection mixing barrel for secondary mixing. The discharge nozzle design on the outer wall of the convection mixing barrel facilitates the smooth discharge of the materials in the convection mixing barrel.

[0024] Optionally, a grinding wheel is provided in the convection mixing barrel, the grinding wheel is sleeved outside the stirring shaft and fixedly connected to the stirring shaft, and a grinding gap is formed between the outer wall of the grinding wheel and the inner wall of the convection mixing barrel;

[0025] The grinding wheel is provided with a mixing flow channel, the discharge hole is arranged toward the mixing flow channel, and a feeding port is provided on the inner side wall of the mixing flow channel.

[0026] By adopting the above technical solution, the design of the mixing channel allows the materials in the two feed chambers to flow into the mixing channel when discharged, increasing the chances of mutual collision and mixing between the materials and improving the mixing effect. The materials entering the mixing channel then enter the grinding gap along the material port, and the grinding wheel in the mixing barrel is fixedly connected to the stirring shaft and rotates with the stirring shaft, which can shear and grind the materials in the grinding gap, further crushing and mixing the materials coming out of the filter grinder.

[0027] Optionally, the grinding plate includes a grinding base and a grinding convex strip disposed on the grinding base, and a cross-section of the grinding convex strip gradually decreases in a direction away from the grinding base.

[0028] By adopting the above technical solution, the grinding plate includes a grinding base and grinding convex strips. The cross-section of the grinding convex strips gradually decreases in the direction away from the grinding base, which can effectively increase the grinding area and improve the grinding efficiency. After entering the filter barrel, the material can be more fully broken up and ground, reducing the agglomeration phenomenon, thereby improving the mixing uniformity of the material and the product quality.

[0029] Optionally, a plurality of the grinding ridges are spaced apart around the axis of the grinding chassis.

[0030] By adopting the above technical solution, multiple grinding convex strips are arranged at intervals around the axis of the grinding chassis, which can increase the grinding area and contact points, effectively improve the grinding efficiency and fineness of the material, and further improve the mixing uniformity of the material. At the same time, the design of multiple grinding convex strips can better break up the lumps in the material, ensuring that the material is more delicate and uniform during the mixing process.

[0031] Optionally, the guide assembly further comprises a limit block, and the limit block is used to abut against the grinding plate;

[0032] The limiting block is fixed on the rod section of the guide vertical rod located outside the filter material cylinder, and the limiting block is close to the opening of the filter material cylinder.

[0033] By adopting the above technical solution, the limit block is fixed on the rod section of the guide vertical rod located outside the filter barrel and close to the opening of the filter barrel, ensuring that the grinding plate is always within the preset range during the sliding process, preventing the grinding plate from detaching from the filter barrel, and ensuring the stability and reliability of the grinding process.

[0034] In summary, the present application includes at least one of the following beneficial effects:

[0035] The setting of the filter grinder can effectively break up the agglomerates in the material. Through the relative movement between the filter barrel and the grinding plate, the agglomerated material is ground and squeezed in the feed cavity, thereby improving the fineness and uniformity of the material.

[0036] The design of the stirring assembly allows the stirring shaft to drive the grinding plate to slide while rotating. This dual effect not only enhances the stirring effect, but also disperses the lumps in the material more thoroughly, further improving the mixing uniformity.

[0037] 3. The discharge hole design on the filter barrel allows the ground material to be discharged smoothly. At the same time, the stirring action of the stirring blade ensures that the material is fully mixed in the mixing tank to avoid local accumulation, thereby improving the overall mixing quality and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the overall structure of the raw material mixing device of the embodiment of the present application;

[0039] Figure 2 is a schematic cross-sectional structural diagram of a raw material mixing device according to an embodiment of the present application;

[0040] Figure 3 is a schematic diagram of the structure of the grinding plate in the embodiment of the present application;

[0041] Figure 4 Schematic diagram of the connection structure between the convection mixing sleeve, the grinding wheel and the stirring shaft in the embodiment of the present application;

[0042] Explanation of the reference numerals: 1. Mixing tank; 11. Feed pipe; 12. Primary mixing shell; 13. Discharge pipe; 2. Stirring assembly; 21. Driving source; 22. Stirring shaft; 221. Feed port; 222. Discharge port; 3. Filter grinder; 31. Filter barrel; 311. Discharge hole; 32. Grinding plate; 321. Grinding bottom plate; 322. Grinding ridges; 33. Stirring blades; 34. Feed chamber; 4. Guide assembly; 41. Guide vertical rod; 42. Limit block; 5. Convection mixing barrel; 51. Connecting rod; 52. Discharge nozzle; 6. Grinding wheel; 61. Grinding gap; 62. Mixing flow channel; 63. Feed port; 7. First flow control valve; 8. Second flow control valve. DETAILED DESCRIPTION

[0043] The following is combined with Figure 1-4 This application is described in further detail.

[0044] The raw material mixing device provided in the embodiment of the present application refers to Figure 1 and Figure 2 The raw material mixing device includes a mixing tank body 1, a stirring assembly 2 and a filter grinder 3. The mixing tank body 1 is specifically configured as a hollow cylinder, and a primary mixing shell 12 is fixed to the top of the mixing tank body 1. The primary mixing shell 12 and the mixing tank body 1 can be connected by welding, bolt connection or snap connection. Multiple feed pipes 11 are fixed and connected to the circumference of the primary mixing shell 12. In this embodiment, two feed pipes 11 are specifically provided, and a first flow control valve 7 is installed on each feed pipe 11. A discharge pipe 13 is connected to the bottom of the mixing tank body 1, and a second flow control valve 8 is fixed to the discharge pipe 13.

[0045] Reference Figure 2The stirring assembly 2 includes a driving source 21 and a stirring shaft 22. One end of the stirring shaft 22 is rotatably connected to the mixing tank body 1, and the other end passes through the inner wall of the mixing tank body 1 and the primary mixing shell 12 in sequence, and is connected to the driving source 21. In this embodiment, the driving source 21 is specifically configured as a servo motor. When the driving source 21 is started, the stirring shaft 22 can be driven to rotate. The stirring shaft 22 is hollow, and a feeding port 221 is provided on the shaft section of the stirring shaft 22 located in the primary mixing shell 12.

[0046] Reference Figure 2 The filter grinder 3 is arranged in the mixing tank body 1, and includes a filter barrel 31 and a grinding plate 32; the filter barrel 31 is arranged in a cylindrical shape, one end of the filter barrel 31 is closed, and a plurality of discharge holes 311 are provided at the closed end of the filter barrel 31. The filter barrel 31 is sleeved outside the stirring shaft 22 and is fixedly connected to the stirring shaft 22. The grinding plate 32 is slidably arranged in the filter barrel 31, and a feed cavity 34 is formed between the grinding plate 32 and the inner side wall of the filter barrel 31, and the feed pipe 11 is connected to the feed cavity 34. A discharge port 222 is provided on the shaft section of the stirring shaft 22 located in the filter barrel 31, and the discharge port 222 is arranged through the closed end of the filter barrel 31. Different materials can enter the primary mixing shell 12 along different feed pipes 11 and then be discharged into the feed cavity 34. The primary mixing shell 12 serves as an intermediate storage and distribution device for materials, which can ensure that the materials are fully premixed before entering the filter barrel 31.

[0047] Reference Figure 2 and Figure 3 A plurality of stirring blades 33 are fixed on the outer wall of the filter cartridge 31. The number and spacing of the stirring blades 33 can be adjusted according to actual needs to ensure that the materials can be fully dispersed and evenly mixed during the mixing process. The grinding plate 32 includes a grinding base 321 and a grinding convex strip 322 arranged on the grinding base 321, and the cross section of the grinding convex strip 322 gradually decreases in the direction away from the grinding base 321. A plurality of grinding convex strips 322 are arranged at intervals around the axis of the grinding base 321.

[0048] Reference Figure 2 , a guide assembly 4 is also provided in the mixing tank body 1, so as to realize the stable sliding of the grinding plate 32 in the filter barrel 31. The guide assembly 4 includes a plurality of guide vertical rods 41 arranged in parallel, one end of the guide vertical rod 41 is fixed on the mixing tank body 1, and the other end passes through the grinding plate 32 and enters the filter barrel 31. In this embodiment, two guide vertical rods 41 are provided in a group of guide assemblies 4. The limit block 42 is fixed on the rod section of the guide vertical rod 41 outside the filter barrel 31, and the limit block 42 is close to the opening of the filter barrel 31; when the grinding plate 32 slides along the guide vertical rod 41, it can abut against the limit block 42 to prevent the grinding plate 32 from detaching from the filter barrel 31 during the sliding process, and ensure that the material entering the mixing tank body 1 can first enter the feed chamber 34 and then be discharged.

[0049] Reference Figure 2 , a thread is provided on the outer wall of the stirring shaft 22, and the stirring shaft 22 is threadedly connected to the grinding plate 32. The pitch and tooth type of the thread can be adjusted according to actual needs to ensure the sliding distance and speed of the grinding plate 32. By using the driving source 21 to drive the stirring shaft 22 to rotate and the grinding plate 32 to slide at the same time, a dual effect on the material is achieved. The stirring shaft 22 rotates together to drive the stirring blade 33 to stir the material so that it is fully dispersed; the sliding of the grinding plate 32 cooperates with the closed end of the rotating filter barrel 31 to calender and grind the material entering the feed chamber 34 to break up the lumps in the material and further improve the mixing uniformity. It not only solves the problem of material agglomeration, but also improves the mixing efficiency and product quality. It is suitable for processing fluid materials or powdered materials.

[0050] Reference Figure 2 Two filter grinders 3 are arranged at intervals on the stirring shaft 22, and one filter grinder 3 is arranged 180° rotationally symmetrically with respect to the other filter grinder 3. Correspondingly, two groups of guide components 4 are also arranged corresponding to the filter grinders 3; the shaft sections of the stirring shaft 22 located in the two filter barrels 31 are both provided with threads, and the two sections of threads on the stirring shaft 22 located in the two filter barrels 31 have opposite rotation directions. It can ensure that the two grinding plates 32 will not interfere with each other during the sliding process, maintain their independence and stability, and are suitable for processing a large amount of materials.

[0051] In other embodiments, only one filter grinder 3 may be provided.

[0052] Reference Figure 2 and Figure 4 A convection mixing cylinder 5 is disposed between the two filter grinders 3 and is sleeved outside the stirring shaft 22. In this embodiment, the convection mixing cylinder 5 is configured to be cylindrical, and the outer diameter of the convection mixing cylinder 5 is less than or equal to the outer diameter of the filter cylinder 31. Figure 3 , the grinding convex strip 322 is located on the side of the grinding chassis 321 close to the convection mixing barrel 5. Two connecting rods 51 are relatively fixed on the outer wall of the convection mixing barrel 5, and one end of the connecting rod 51 away from the convection mixing barrel 5 is fixed on the inner wall of the mixing tank body 1, so as to realize the fixed connection of the convection mixing barrel 5 in the mixing tank body 1. A grinding wheel 6 is arranged in the convection mixing barrel 5, and the grinding wheel 6 is sleeved outside the stirring shaft 22 and fixedly connected to the stirring shaft 22; a grinding gap 61 is formed between the outer wall of the grinding wheel 6 and the inner wall of the convection mixing barrel 5. A mixing flow channel 62 is provided on the grinding wheel 6, and the discharge holes 311 on the two filter barrels 31 are both arranged toward the mixing flow channel 62, and a feeding port 63 is provided on the inner wall of the mixing flow channel 62. A discharge nozzle 52 is also fixed on the outer wall of the convection mixing barrel 5, and the discharge nozzle 52 is connected to the grinding gap 61.

[0053] Reference Figure 2 and Figure 4During the sliding of the grinding plate 32, the materials in the two feed chambers 34 flow into the mixing channel 62 along the discharge hole 311, which increases the chances of mutual collision and mixing between the materials and improves the mixing effect. The materials entering the mixing channel 62 are then discharged from the mixing channel 62 along the material outlet 63 and enter the grinding gap 61. The grinding wheel 6 in the flow mixing barrel rotates with the stirring shaft 22, and can shear and grind the materials entering the grinding gap 61, more efficiently control the flow and grinding effect of the materials, and improve the mixing uniformity and product quality.

[0054] The implementation principle of a raw material mixing device in an embodiment of the present application is as follows: different raw materials are introduced into the primary mixing shell 12 along different mixing pipes respectively; after a certain amount of material is introduced, the driving source 21 is started to rotate the stirring shaft 22, and the grinding plate 32 slides along the direction close to the closed end of the filter barrel 31 as the stirring shaft 22 rotates. The material in the primary mixing shell 12 is fed into the feed chamber 34 through the stirring shaft 22. As the grinding plate 32 slides, the feed chamber 34 gradually shrinks, and the material in the feed chamber 34 gradually enters the mixing channel 62 along the discharge hole 311. The agglomerated material is ground by the grinding action of the grinding plate 32 and the inner wall of the filter barrel 31, and is broken into fine particles. The ground material also enters the mixing channel 62 through the discharge hole 311 to be further mixed evenly. After the secondary mixing, the material flows into the grinding gap 61 along the material passing port 63, and the grinding wheel 6 shears and grinds the material entering the grinding gap 61. Finally, the material is discharged to the mixing tank 1 through the discharge nozzle 52, and is mixed for the third time under the action of the stirring blade 33. When the grinding wheel 6 slides to abut against the closed end of the filter barrel 31, a round of grinding operation is completed; at this time, the driving source 21 drives the driving shaft to reverse, and the grinding plate 32 slides back to the initial position, and the next round of grinding operation can be carried out. The mixed material can be discharged along the discharge pipe 13.

[0055] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A raw material mixing device, characterized in that: include: A mixing tank body (1), wherein the mixing tank body (1) is connected to a plurality of feed pipes (11); A stirring assembly (2), comprising a driving source (21) and a stirring shaft (22), wherein the stirring shaft (22) is rotatably connected to the mixing tank body (1), and the driving source (21) is used to drive the stirring shaft (22) to rotate; A filter grinder (3) is arranged in the mixing tank body (1), comprising a filter barrel (31) and a grinding plate (32); the filter barrel (31) is sleeved outside the stirring shaft (22) and fixedly connected to the stirring shaft (22); one end of the filter barrel (31) is closed; a discharge hole (311) is provided on the filter barrel (31); and a stirring blade (33) is fixed on the outer wall of the filter barrel (31); the grinding plate (32) is slidably arranged in the filter barrel (31), and a feed cavity (34) is formed between the grinding plate (32) and the inner wall of the filter barrel (31); the feed pipe (11) is connected to the feed cavity (34); and the driving source (21) is also used to drive the grinding plate (32) to slide; A guide assembly (4) is arranged in the mixing tank body (1), and the guide assembly (4) comprises a plurality of guide vertical rods (41) arranged in parallel; one end of the guide vertical rod (41) is fixed to the mixing tank body (1), and the other end passes through the grinding plate (32) and enters the filter material cylinder (31); The outer wall of the stirring shaft (22) is provided with threads, and the stirring shaft (22) is threadedly connected to the grinding plate (32); The stirring shaft (22) is hollow, and a primary mixing shell (12) is provided on the shaft section of the stirring shaft (22) outside the mixing tank body (1). The primary mixing shell (12) is fixed on the mixing tank body (1), and the feed pipe (11) is connected to the primary mixing shell (12); A feed port (221) is provided on the shaft section of the stirring shaft (22) located inside the primary mixing shell (12), and a discharge port (222) is provided on the shaft section of the stirring shaft (22) located inside the filter cartridge (31).

2. A raw material mixing device according to claim 1, characterized in that: Two filter grinders (3) are arranged at intervals on the stirring shaft (22), and one filter grinder (3) is arranged 180° rotationally symmetrically with respect to the other filter grinder (3); The guide assembly (4) is also provided in two groups corresponding to the filter grinder (3), and the two sections of threads on the stirring shaft (22) located in the two filter material cylinders (31) have opposite rotation directions.

3. A raw material mixing device according to claim 2, characterized in that: A convection mixing cylinder (5) is arranged between the two filter grinders (3), and the convection mixing cylinder (5) is sleeved outside the stirring shaft (22); a connecting rod (51) is fixed on the outer wall of the convection mixing cylinder (5), and one end of the connecting rod (51) is fixed on the inner wall of the mixing tank body (1); The discharge hole (311) is opened at the closed end of the filter barrel (31), and the discharge hole (311) is connected to the convection mixing barrel (5), and a discharge nozzle (52) is provided on the outer side wall of the convection mixing barrel (5).

4. A raw material mixing device according to claim 3, characterized in that: A grinding wheel (6) is arranged in the convection mixing barrel (5), the grinding wheel (6) is sleeved outside the stirring shaft (22) and is fixedly connected to the stirring shaft (22), and a grinding gap (61) is formed between the outer wall of the grinding wheel (6) and the inner wall of the convection mixing barrel (5); The grinding wheel (6) is provided with a mixing flow channel (62), the discharge hole (311) is arranged towards the mixing flow channel (62), and a feeding port (63) is provided on the inner side wall of the mixing flow channel (62).

5. A raw material mixing device according to claim 1, characterized in that: The grinding plate (32) comprises a grinding base (321) and a grinding convex strip (322) arranged on the grinding base (321), wherein the cross section of the grinding convex strip (322) gradually decreases in a direction away from the grinding base (321).

6. A raw material mixing device according to claim 5, characterized in that: A plurality of the grinding convex strips (322) are arranged at intervals around the axis of the grinding bottom plate (321).

7. A raw material mixing device according to claim 1, characterized in that: The guide assembly (4) further comprises a limit block (42), wherein the limit block (42) is used to abut against the grinding plate (32); The limit block (42) is fixed to the rod section of the guide vertical rod (41) located outside the filter cartridge (31), and the limit block (42) is close to the opening of the filter cartridge (31).

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