Horizontal mixing machine for powder and particle materials

Abstract

The utility model provides a horizontal powder and particle material mixing machine, which belongs to the technical field of material mixing and comprises a base, a machine barrel, a communicating pipeline and a tailing discharge pipe. A stirring assembly is arranged in an inner cavity of the machine barrel in the axial direction, a bearing support is arranged at the first end of the machine barrel, a driving mechanism is arranged at the second end of the machine barrel, the first end of the machine barrel is higher than the second end, a discharging pipe is arranged on the side, close to the first end, of the bottom of the machine barrel, and a feeding pipe is arranged on the side, close to the second end, of the top of the machine barrel; one end of the communicating pipeline is connected to the side wall of the feeding pipe, and the other end of the communicating pipeline is connected to the side, close to the first end, of the top of the machine barrel; the tailing discharge pipe is arranged on the side, close to the second end, of the bottom of the machine barrel. According to the horizontal mixing machine for the powder and particle materials, air flow in the machine barrel is circulated, air pressure is effectively balanced, the materials are not prone to accumulation, cleanliness in the mixing machine is powerfully maintained, stable and efficient operation of the mixing machine is guaranteed, and the mixing requirement of the powder and particle materials is met.

Description

Technical Field

[0001] This utility model belongs to the field of material mixing technology, and more specifically, it relates to a horizontal mixer for powder and granular materials. Background Technology

[0002] In the pharmaceutical field, the stability and reliability of drug quality are paramount, and the uniformity of mixing powdered and granular materials is a crucial element. Take tablets, for example; their dissolution rate must be strictly controlled within a certain range to ensure effective drug release. The dosage of capsules is even more critical, allowing no room for error, as any deviation would directly impact patient safety and treatment efficacy. Horizontal mixers, as core equipment responsible for mixing powdered and granular materials, should be helping pharmaceutical companies create high-quality drugs. However, in actual mixing operations, they have encountered difficulties. Inside the barrel, due to the high-speed rotation of the blades, the airflow becomes extremely turbulent, and the resulting series of problems are seriously hindering the improvement of drug quality.

[0003] This turbulent airflow poses a significant challenge to mixing uniformity. Materials of different particle sizes and densities, caught in the turbulence, struggle to achieve sufficient and uniform blending, resulting in a substantial reduction in mixing homogeneity. Commonly, the mixed material exhibits significant localized concentration variations, with some areas rich in material and others relatively thin. This undoubtedly leads to inconsistent efficacy in subsequent drug production. Furthermore, the turbulent airflow exacerbates the problem of material accumulation. Material tends to accumulate in large quantities in the corners, gaps, and near the discharge port of the machine, causing not only material waste but also making cleaning extremely difficult. Prolonged accumulation of material can easily breed bacteria and deteriorate, potentially causing serious quality problems and posing a potential threat to patients' health if it mixes into subsequent batches of drugs. Utility Model Content

[0004] The purpose of this invention is to provide a horizontal mixer for powder and granular materials, which aims to solve the problems of uneven mixing and material accumulation caused by turbulent airflow inside the drum.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a horizontal mixer for powder and granular materials, including a base, a barrel, a connecting pipe and a tail material discharge pipe;

[0006] The barrel is inclinedly disposed on the upper end of the base. A stirring assembly is arranged axially in the inner cavity of the barrel. A bearing support is provided at the first end of the barrel. A driving mechanism for driving the stirring assembly is provided at the second end of the barrel. The first end of the barrel is higher than the second end. A discharge pipe is provided on the bottom of the barrel near the first end. A feed pipe is provided on the top of the barrel near the second end.

[0007] One end of the connecting pipe is connected to the side wall of the feed pipe, and the other end of the connecting pipe is connected to the top of the barrel near the first end.

[0008] The tail material discharge pipe is located at the bottom of the barrel, near the second end.

[0009] In one possible implementation, the stirring assembly includes a blade shaft and multiple sets of stirring blades. The blade shaft is axially disposed within the inner cavity of the barrel. One end of the blade shaft is rotatably connected to the bearing support, and the other end of the blade shaft is drively connected to the drive mechanism. The multiple sets of stirring blades are axially disposed on the blade shaft.

[0010] In one possible implementation, each group of agitator blades includes blade units arranged circumferentially on the blade shaft, with the centerlines of two adjacent blade units in the same group being perpendicular to each other.

[0011] In one possible implementation, the blade unit has a fan-shaped structure with its width decreasing from the outside to the inside.

[0012] In one possible implementation, a first connector and a second connector are respectively provided at the top two ends of the base. The first connector is hinged to the second end of the barrel, and the second connector is hinged to the middle of the barrel via a telescopic cylinder.

[0013] In one possible implementation, limit blocks are provided on both sides of the first connector, and the limit blocks are fixed to the top of the base.

[0014] In one possible implementation, the lower end of the base is provided with multiple adjustable legs.

[0015] In one possible implementation, the drive mechanism includes a rotary motor and a coupling, wherein the rotary motor is mounted on the second end of the barrel via the coupling, and the rotary motor is used to drive the stirring assembly via the coupling.

[0016] In one possible implementation, a filter element is provided inside the connecting pipe.

[0017] In one possible implementation, the end of the tail material discharge pipe is detachably fitted with a cap.

[0018] The advantages of this utility model for a horizontal mixer for powder and granular materials are as follows: Compared with the prior art, the drum is inclined and positioned on the upper part of the base, with its first end higher than its second end. A feed pipe is located near the second end at the top, through which the material enters the drum. An agitator is axially mounted inside the drum, driven by a mechanism at the second end, which agitates the incoming powder and granular materials, causing them to continuously tumble and mix within the drum. Simultaneously, a connecting pipe is attached at one end to the side wall of the feed pipe and at the other end to the top of the drum near the first end, allowing airflow within the drum to circulate, effectively balancing air pressure and avoiding uneven mixing caused by turbulent airflow, ensuring uniform material blending. The discharge pipe at the bottom of the drum near the first end discharges the mixed material, while the tail discharge pipe near the second end promptly cleans up residual tail material. Combined with the drum's inclination causing the material to move downwards due to gravity and the agitating action of the agitator, multiple safeguards prevent material accumulation, effectively maintaining the cleanliness of the mixer's interior, ensuring stable and efficient operation, and meeting the mixing requirements of powder and granular materials. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This utility model provides a structural schematic diagram of a horizontal mixer for powder and granular materials.

[0021] Figure 2 A schematic diagram of the structure of the blade shaft provided by this utility model;

[0022] Figure 3 A schematic diagram of the slurry unit provided by this utility model.

[0023] In the diagram: 1. Base; 2. Telescopic cylinder; 3. Limit block; 4. Machine barrel; 5. Coupling seat; 6. Bearing support; 7. Paddle shaft; 8. Tail discharge pipe; 9. Connecting pipe; 10. Rotary motor; 11. Feed pipe; 12. Discharge pipe; 13. Paddle unit. Detailed Implementation

[0024] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] Unless otherwise explicitly specified, the use of terms such as "first," "second," or "third" is intended to distinguish different objects, not to describe a specific order.

[0026] Unless otherwise expressly defined, the use of directional terms such as “center,” “lateral,” “longitudinal,” “horizontal,” “vertical,” “top,” “bottom,” “inner,” “outer,” “upper,” “lower,” “front,” “back,” “left,” “right,” “clockwise,” “counterclockwise,” “high,” and “low” to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of the present invention.

[0027] Please see Figure 1 The present invention provides a horizontal mixer for powder and granular materials. The horizontal mixer for powder and granular materials includes a base 1, a barrel 4, a connecting pipe 9, and a tailings discharge pipe 8. The barrel 4 is inclinedly disposed on the upper end of the base 1. A stirring assembly is axially disposed within the inner cavity of the barrel 4. A bearing support 6 is disposed at the first end of the barrel 4, and a driving mechanism for driving the stirring assembly is disposed at the second end of the barrel 4. The first end of the barrel 4 is higher than the second end. A discharge pipe 12 is disposed at the bottom of the barrel 4 near the first end, and a feed pipe 11 is disposed at the top of the barrel 4 near the second end. One end of the connecting pipe 9 is connected to the side wall of the feed pipe 11, and the other end of the connecting pipe 9 is connected to the top of the barrel 4 near the first end. The tailings discharge pipe 8 is disposed at the bottom of the barrel 4 near the second end.

[0028] This utility model provides a horizontal mixer for powder and granular materials. Compared with the prior art, the drum 4 is inclinedly placed on the upper end of the base 1, with its first end higher than its second end. A feed pipe 11 is provided at the top near the second end, through which the material enters the drum 4. An agitator is axially mounted inside the drum 4, driven by a drive mechanism at the second end to agitate the incoming powder and granular materials, causing them to continuously tumble and mix within the drum 4. Simultaneously, a connecting pipe 9 is connected at one end to the side wall of the feed pipe 11 and at the other end to the top of the drum 4 near the first end, allowing airflow to circulate within the drum 4, effectively balancing air pressure, avoiding uneven mixing caused by turbulent airflow, and ensuring uniform material blending. The discharge pipe 12 at the bottom of the barrel 4 near the first end is used to discharge the mixed material, while the tail discharge pipe 8 near the second end can clean up the residual tail material in time. Combined with the inclination of the barrel 4 itself, which causes the material to move to a lower position by gravity, and the tumbling action of the stirring components, the material is not easy to accumulate under multiple protections, which effectively maintains the cleanliness inside the mixer, ensures its stable and efficient operation, and meets the mixing needs of powder and granular materials.

[0029] Please see Figures 1 to 2 The mixing assembly includes a paddle shaft 7 and multiple sets of mixing blades. The paddle shaft 7 is axially positioned within the inner cavity of the barrel 4. One end of the paddle shaft 7 is rotatably connected to a bearing support 6, and the other end is drive-connected to a drive mechanism. Multiple sets of mixing blades are axially arranged on the paddle shaft 7. After the material enters the inclined barrel 4, the drive mechanism located at the second end of the barrel 4 is activated, and power is transmitted to the paddle shaft 7 through the transmission connection, causing it to rotate around its axis. Since one end of the paddle shaft 7 is rotatably connected to the bearing support 6, the stability of the rotation is ensured. The multiple sets of mixing blades arranged axially along the paddle shaft 7 rotate synchronously, powerfully mixing and agitating the powder and granular materials within the inner cavity of the barrel 4. The multiple sets of mixing blades fully cover the internal space of the barrel 4. As the paddle shaft 7 rotates, the material is fully agitated at different levels and positions, with frequent collisions and mixing between particles, effectively avoiding mixing dead zones and allowing various powder and granular materials to be uniformly mixed. The stable and high-speed rotation of the blade shaft 7, combined with the continuous and powerful action of multiple sets of stirring blades, greatly accelerates the material mixing speed compared to single-blade or a small number of blades, enabling the material to reach the ideal mixing state in a shorter time and meeting the needs of high-efficiency production.

[0030] Please see Figure 2 Each set of stirring blades includes blade units 13 arranged circumferentially on the blade shaft 7, with the center lines of two adjacent blade units 13 in the same set perpendicular to each other. During the stirring process, as the blade shaft 7 drives the stirring blades to rotate, the direction of the force exerted on the material by adjacent blade units 13 constantly changes because their center lines are perpendicular. Just as one set of blade units 13 applies a forward pushing force to the material, causing it to flow in a certain direction, another set of blade units 13 perpendicular to it will immediately cut in from the side, changing the flow direction of the material, making the trajectory of the material within the barrel 4 extremely complex. This results in more frequent collisions and friction between material particles, greatly promoting the mixing effect and effectively preventing uneven phenomena such as stratification and agglomeration, ensuring high-quality mixing. The blade units 13 in different directions can reach the materials in every corner of the barrel 4. Whether it is the material near the wall of the barrel 4 or the material in the central area of ​​the barrel 4, it can be fully stirred. There are no dead corners in the mixing, so that every part of the material in the barrel 4 can participate in the mixing process, further ensuring the uniformity and efficiency of the mixing, and helping the horizontal mixer of powder and granular materials to better complete the mixing task.

[0031] Please see Figure 3The blade unit 13 has a fan-shaped structure with its width decreasing from the outside to the inside. From a mixing perspective, when the blade shaft 7 drives these fan-shaped blade units 13 to rotate at high speed, due to their unique shape and size variations, the wider outer portion can effectively grab a large amount of material close to the wall of the barrel 4. Material near the wall of the barrel 4 often has relatively poor flowability due to friction and other factors, but the wide outer side of the blades can efficiently entrain this material into the mixing zone, preventing material accumulation on the wall. Simultaneously, as the blades rotate inward, the decreasing width characteristic causes the material to gradually gather and compress, further enhancing the collision and mixing between materials. Different particle sizes are repeatedly kneaded during this process, greatly improving the uniformity of the mixture. This fan-shaped structure, decreasing from the outside to the inside, makes the force on the blades more uniform during rotation. Compared with blades of equal width, it reduces vibration caused by uneven local stress and reduces the impact on the blade shaft 7, bearing support 6 and drive mechanism, thereby ensuring that the entire mixing assembly can operate stably under long-term, high-intensity working environment, extending the service life of the equipment, and laying a solid foundation for continuous and efficient mixing of powder and granular materials.

[0032] Please see Figure 1 The base 1 has a first connecting member and a second connecting member at its top two ends, respectively. The first connecting member is hinged to the second end of the barrel 4, and the second connecting member is hinged to the middle of the barrel 4 via a telescopic cylinder 2. The first connecting member at one end of the base 1 is hinged to the second end of the barrel 4, allowing the barrel 4 to rotate flexibly around this hinge point, laying the foundation for subsequent adjustments. The second connecting member at the other end of the base 1 is hinged to the middle of the barrel 4 via the telescopic cylinder 2. In actual operation, when the tilt angle of the barrel 4 needs to be adjusted, the telescopic cylinder 2 activates, moving the middle of the barrel 4 hinged to it through its telescopic movement. Due to the hinge at the first connecting member, the overall tilt angle of the barrel 4 changes accordingly. By flexibly adjusting the tilt angle of the barrel 4, the requirements of different material properties for the mixing environment can be adapted. For example, for materials with poor flowability, the inclination of the barrel 4 can be appropriately increased to allow the material to flow more smoothly inside the barrel 4 by means of gravity, so that the stirring components can play a full role and accelerate the mixing process.

[0033] Limiting blocks 3 are respectively provided on both sides of the first connecting member, and the limiting blocks 3 are fixed to the top of the base 1. The limiting blocks 3 define a clear boundary for the rotation of the barrel 4. When the barrel 4 is adjusted at an angle with the first connecting member as the hinge point, whether it is due to the impact force generated by the material flowing in the barrel 4 or the additional force caused by the telescopic cylinder 2 driving the barrel 4 to move in the middle, the limiting blocks 3 can effectively constrain the swing range of the barrel 4, ensuring that the barrel 4 will not go out of control due to excessive rotation, and maintaining the barrel 4 to run smoothly within the predetermined angle range.

[0034] Preferably, the lower end of the base 1 is equipped with multiple adjustable support legs. Different usage sites often have uneven ground conditions, potentially including unevenness or slopes. These multiple adjustable support legs can be independently height-adjusted. By rotating the adjusting nuts on the support legs or operating the corresponding adjustment devices, the base 1 can be easily leveled, ensuring that the barrel 4 is in a horizontal or desired tilt position. This lays the foundation for a precise connection between the barrel 4 and the base 1, as well as stable operation of the equipment, enabling the mixer to quickly adapt to various complex installation environments.

[0035] Please see Figure 1 The drive mechanism includes a rotary motor 10 and a coupling 5. The rotary motor 10 is mounted on the second end of the barrel 4 via the coupling 5, and drives the stirring assembly. After the powdered material enters the inclined barrel 4 through the feed pipe 11, the operator starts the rotary motor 10. The rotary motor 10 generates power, which is stably and reliably transmitted to the impeller shaft 7 of the stirring assembly via the coupling 5. Driven by the power, the impeller shaft 7 begins to rotate axially, and the multiple sets of stirring blades mounted on the impeller shaft 7 rotate accordingly, stirring and mixing the powdered material in the barrel 4, ensuring full contact and blending of the materials, ultimately achieving uniform mixing. The mixed material is discharged from the discharge pipe 12, and the tail material is cleaned through the tail material discharge pipe 8. The coupling 5 plays a crucial connecting and transitional role between the rotary motor 10 and the stirring assembly. It effectively and smoothly transmits the power output from the rotary motor 10 to the impeller shaft 7, reducing energy loss and vibration during power transmission. This allows the mixing components to operate stably, ensuring the continuity and stability of the material mixing process and helping to improve the mixing quality.

[0036] Preferably, a filter element is installed inside the connecting pipe 9 to block material from passing through. Gas circulates within the barrel 4 and the connecting pipe 9 to achieve gas phase pressure balance. When the impeller shaft 7 rotates in the reverse direction, the gas in the connecting pipe 9 flows in the reverse direction, achieving a backflushing effect on the filter element, thereby cleaning the material adhering to the filter element. The small amount of material adhering to the filter element is peeled off under the impact of the backflushing airflow and falls back into the barrel 4 to participate in mixing. This solves the problem of filter element clogging and eliminates the need for additional machine shutdown for filter element cleaning. This greatly improves the continuous operation capability of the mixer, reduces equipment downtime for maintenance, and enhances overall production efficiency, allowing the horizontal mixer for powder and granular materials to maintain a highly efficient and stable operating state during long-term, high-intensity production tasks.

[0037] Preferably, the end of the tail material discharge pipe 8 is detachably fitted with a plug. Furthermore, a sealing gasket is installed at the end of the tail material discharge pipe 8 to ensure its airtightness when the plug is installed. During operation of the horizontal mixer for powder and granular materials, the detachable plug at the end of the tail material discharge pipe 8 is tightly installed, and the sealing gasket between it and the end of the tail material discharge pipe 8 also functions, tightly fitting against the contact surface to seal the port of the tail material discharge pipe 8. When the mixing process is complete and it is necessary to clean the residual tail material inside the barrel 4, the operator manually unscrews or removes the plug. At this time, the sealing gasket is removed along with the plug or remains attached to the end of the tail material discharge pipe 8, and the tail material flows out through the open pipe. After cleaning, the plug with the sealing gasket is reinstalled at the end of the tail material discharge pipe 8, ready for the next mixing operation.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A horizontal mixer for powder and granular materials, characterized by comprising: Base (1), machine barrel (4), communication pipeline (9) and tail pipe (8) are included. The machine barrel (4) is obliquely arranged at the upper end of the base (1), the inner cavity of the machine barrel (4) is provided with a stirring assembly along the axial direction, the first end of the machine barrel (4) is provided with a bearing support (6), the second end of the machine barrel (4) is provided with a driving mechanism for driving the stirring assembly to act, the first end of the machine barrel (4) is higher than the second end, the bottom of the machine barrel (4) is provided with a discharge pipe (12) on the side close to the first end, and the top of the machine barrel (4) is provided with a feeding pipe (11) on the side close to the second end. One end of the communication pipeline (9) is connected to the side wall of the feeding pipe (11), and the other end of the communication pipeline (9) is connected to the top of the machine barrel (4) on the side close to the first end. The tail pipe (8) is arranged on the bottom of the machine barrel (4) on the side close to the second end.

2. A horizontal powder and granule mixer according to claim 1, wherein The stirring assembly includes a paddle shaft (7) and a plurality of groups of stirring paddles, the paddle shaft (7) is arranged in the inner cavity of the machine barrel (4) in the axial direction, one end of the paddle shaft (7) is rotatably connected to the bearing support (6), and the other end of the paddle shaft (7) is drivingly connected to the driving mechanism, and a plurality of groups of stirring paddles are arranged on the paddle shaft (7) in the axial direction.

3. A horizontal powder mixing machine according to claim 2, wherein Each group of the stirring paddles includes paddle units (13) arranged circumferentially on the paddle shaft (7), and the center lines of two adjacent paddle units (13) in the same group of the stirring paddles are perpendicular to each other.

4. A horizontal powder mixing machine according to claim 3, wherein The paddle unit (13) is in a fan-shaped structure and the width decreases from outside to inside.

5. A horizontal powder mixing machine according to claim 1, wherein The top of the base (1) is provided with a first connecting piece and a second connecting piece at both ends respectively, the first connecting piece is hingedly connected to the second end of the machine barrel (4), and the second connecting piece is hingedly connected to the middle part of the machine barrel (4) through the telescopic air cylinder (2).

6. A horizontal powder mixing machine according to claim 5, wherein Limiting blocks (3) are arranged on both sides of the first connecting piece respectively, and the limiting blocks (3) are fixed to the top of the base (1).

7. A horizontal powder mixing machine according to claim 1, wherein The lower end of the base (1) is provided with a plurality of adjusting legs.

8. A horizontal powder mixing machine according to claim 1, wherein The driving mechanism includes a rotary motor (10) and a shaft coupling base (5), the rotary motor (10) is installed on the second end of the machine barrel (4) through the shaft coupling base (5), and the rotary motor (10) is used for driving the stirring assembly to act through the shaft coupling base (5).

9. A horizontal powder mixing machine according to claim 1, wherein The communication pipeline (9) is provided with a filter element in the inside.

10. A horizontal powder mixing machine according to claim 1, wherein The end of the tail pipe (8) is detachably provided with a plug.

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