Mixing equipment for molding powder production

Abstract

The invention belongs to the technical field of molding powder production equipment, and particularly relates to molding powder production mixing equipment which comprises a tank body, a support, a feeding pipeline, a discharging pipeline, a stirring mechanism, a driving mechanism and a transmission mechanism. A stirring paddle mechanism of the stirring mechanism comprises a special stirring rod, a connecting rod and a cone stirrer, a plurality of groups of cone stirrers are distributed up and down, the directions of the adjacent cone stirrers are opposite, complex flow state and convection are formed during operation, the mixing strength and uniformity are enhanced, uniform components are ensured, and staggered soft raised lines matched with the inner wall of a tank body can disturb materials and avoid material accumulation on the wall surface; the spiral stirring blades at the bottom end of the stirring shaft play roles in strengthening stirring and assisting discharging in the mixing and discharging stages respectively, the production efficiency is improved, the problems that existing equipment is uneven in stirring, materials on the wall face are stacked and the like are effectively solved, the molding powder production quality and efficiency are remarkably improved, and the molding powder stirring device has great application value.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic powder production equipment, in particular to a plastic powder production mixing equipment. Background Art

[0002] Plastic powder, full name thermosetting powder coating, is a new type of coating material, which is mainly composed of resin, curing agent, pigment, filler and additives, and is in powder form at room temperature. Plastic powder has the advantages of no solvent pollution, high utilization rate and easy construction. It is applied to the surface of the object by electrostatic spraying or fluidized bed dipping. After high-temperature baking and curing, it can form a flat, smooth coating with good corrosion resistance, wear resistance and decorative properties. It is widely used in many fields such as construction, home appliances, automobiles, furniture, etc., and can effectively protect and beautify various products. Plastic powder production mixing equipment is an important part of plastic powder production equipment.

[0003] The existing plastic powder production mixing equipment is mainly composed of the following parts: stirring shaft, stirring blades, motor, mixing tank and other parts. The working principle is as follows: the measured resin, curing agent, pigment and other raw materials are put into the mixing tank, and the stirring blades rotate to generate stirring force, so that the materials can move in a circular and axial direction in the tank, and different materials can intersperse and diffuse with each other to achieve material mixing. The mixed plastic powder is discharged to the next processing area.

[0004] At present, the plastic powder production mixing equipment in the existing technology has the following shortcomings: in the field of plastic powder production, the performance of the mixing equipment plays a key role in the product quality. The existing plastic powder production mixing equipment can only perform a single circular motion in the stirring mode, and is limited to stirring the material in a single plane. This results in the material being unable to be fully stirred and mixed in the vertical direction, and is prone to upper and lower stratification. Raw materials with different particle sizes, densities and chemical properties are difficult to evenly blend, and the material agglomeration phenomenon is serious, which greatly affects the quality stability of the plastic powder product, making the final product uneven in performance and unable to meet the needs of high-end application scenarios. In addition, during the stirring process, the material near the inner wall of the tank is prone to form a stationary or slowly flowing area, where the material accumulates and cannot fully participate in the overall stirring process, resulting in poor overall stirring uniformity in the tank, which not only reduces production efficiency, but also affects the quality of the plastic powder product, and is prone to local uneven mixing, increasing the defective rate of the product; therefore, a plastic powder production mixing equipment is proposed to address the above problems. Summary of the invention

[0005] In order to make up for the shortcomings of existing plastic powder production mixing equipment, a plastic powder production mixing equipment is proposed.

[0006] The technical solution adopted by the present invention to solve its technical problems is: the plastic powder production mixing equipment described in the present invention includes a tank body, a bracket is fixedly arranged at the bottom end of the tank body, a feeding pipe for feeding and a discharging pipe for discharging are arranged on the tank body, a stirring mechanism for mixing and stirring is rotatably arranged in the tank body, a driving mechanism for driving the stirring mechanism to rotate is fixedly installed on the tank body, a transmission mechanism for making the stirring mechanism move in multiple directions is transmitted between the driving mechanism and the stirring mechanism, the driving mechanism includes a motor fixedly arranged on the tank body through a fixed frame, the output end of the motor is equipped with a rotating shaft through a coupling, the bottom end of the rotating shaft extends to the inside of the tank body, and the stirring mechanism includes a stirring shaft.

[0007] Preferably, the transmission mechanism includes a connecting rod fixed at the bottom end of the rotating shaft by bolts, and also includes an assembly seat fixed inside the tank body by bolts, the assembly seat sleeve is arranged on the outside of the connecting rod, and a movable sleeve is slidably sleeved on the connecting rod. The bottom end of the movable sleeve is fixedly connected to the stirring shaft by bolts, and the inner wall of the assembly seat is provided with an annular guide groove for driving the movable sleeve to move up and down, and the outer wall of the movable sleeve is movably equipped with a ball that cooperates with the annular guide groove.

[0008] Preferably, the stirring mechanism further comprises a stirring paddle mechanism mounted on the stirring shaft, the stirring paddle mechanism comprises a stirring rod, one end of the stirring rod is provided with a connecting rod rotatably via a rotating rod, and one end of the connecting rod is fixedly provided with a conical cylinder stirrer.

[0009] Preferably, the stirring paddle mechanisms are arranged in groups and distributed vertically on the stirring shaft.

[0010] Preferably, the conical agitators in adjacent agitator paddle mechanisms are arranged in opposite directions.

[0011] Preferably, the interior of the tank body is equipped with an isolation cover for isolating the transmission mechanism, and the stirring shaft slides through the isolation cover.

[0012] Preferably, the inner wall of the tank body is equipped with a mounting sleeve, and soft convex strips are staggeredly arranged on the inner diameter of the mounting sleeve.

[0013] Preferably, a notch is provided on the connecting rod, and a protrusion matching the notch is provided on the inner wall of the movable sleeve.

[0014] Preferably, a spiral stirring blade is provided at the bottom end of the stirring shaft, and the spiral stirring blade is located directly above the discharge pipe.

[0015] Beneficial effects of the present invention:

[0016] 1. Multi-directional movement of the stirring shaft: The present invention uses a unique transmission mechanism to make the stirring shaft, driven by a motor, perform both circular motion and up and down reciprocating motion. This multi-directional motion breaks the limitation of single-plane stirring of traditional stirring equipment. The material can be fully stirred in both horizontal and vertical directions and fully move in three-dimensional space, effectively reducing the agglomeration of materials. For raw materials with different particle sizes, densities and chemical properties in the production of plastic powder, more uniform mixing can be achieved, significantly improving the quality stability of plastic powder products;

[0017] 2. Unique design of stirring paddle mechanism: The stirring paddle mechanism includes specially designed stirring rods, connecting rods and cone-shaped stirrers, and multiple groups of stirring paddle mechanisms are distributed up and down. Adjacent cone-shaped stirrers are in opposite directions. When the stirring shaft moves, the cone-shaped stirrers swing. The upper and lower adjacent stirrers exert forces in different directions on the material, forming complex eddies and irregular flows, forming strong convection between different layers of the material, and the material constantly exchanges positions and mixes within the entire tank height range, which greatly enhances the mixing strength and uniformity of the material, effectively breaks the material agglomeration, and ensures that the final plastic powder product has uniform composition;

[0018] 3. Setting of soft convex strips: Soft convex strips are staggered on the assembly kit assembled on the inner wall of the tank. During the stirring process, the soft convex strips block and disturb the materials. Their elastic deformation and recovery process bring additional stirring effect to the materials, enhance the stirring and mixing of the materials near the inner wall of the tank, and avoid the formation of static or slow flow areas near the inner wall of the tank. This solves the problem of slow flow or accumulation of materials near the inner wall of the tank in traditional stirring equipment, resulting in uneven mixing, and improves the overall stirring uniformity in the tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 It is a structural cross-sectional view of the whole of the present invention;

[0021] Figure 2 yes Figure 1 A magnified view of the structure at center A;

[0022] Figure 3 It is a cross-sectional view of the connecting rod and the movable sleeve in the present invention;

[0023] Legend:

[0024] 1. Tank body; 01. Bracket; 2. Feed pipe; 3. Discharge pipe; 4. Stirring mechanism; 401. Stirring shaft; 402. Stirring paddle mechanism; 4021. Stirring rod; 4022. Connecting rod; 4023. Conical drum agitator; 5. Driving mechanism; 501. Motor; 502. Rotating shaft; 6. Transmission mechanism; 601. Connecting rod; 6011. Notch; 602. Assembly seat; 603. Movable sleeve; 6031. Protrusion; 604. Annular guide groove; 605. Ball; 7. Isolation cover; 8. Assembly set; 9. Soft convex strip. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Specific examples are given below.

[0027] See also Figure 1-Figure 3The present invention discloses a plastic powder production mixing device, comprising a tank body 1, a bracket 01 is fixedly arranged at the bottom end of the tank body 1, a feeding pipe 2 for feeding and a discharging pipe 3 for discharging are arranged on the tank body 1, and both the feeding pipe 2 and the discharging pipe 3 are equipped with electromagnetic valves for controlling the feeding and discharging of materials, a stirring mechanism 4 for mixing and stirring is rotatably arranged in the tank body 1, a driving mechanism 5 for driving the stirring mechanism 4 to rotate is fixedly arranged on the tank body 1, a transmission mechanism 6 for making the stirring mechanism 4 move in multiple directions is arranged between the driving mechanism 5 and the stirring mechanism 4, and the driving mechanism 5 includes a fixed frame fixedly arranged on the tank body 1 The motor 501 on the tank 1, the output end of the motor 501 is equipped with a rotating shaft 502 through a coupling, the bottom end of the rotating shaft 502 extends to the inside of the tank 1, the stirring mechanism 4 includes a stirring shaft 401, the transmission mechanism 6 includes a connecting rod 601 fixedly arranged at the bottom of the rotating shaft 502 by bolts, and also includes an assembly seat 602 fixedly arranged inside the tank 1 by bolts, the assembly seat 602 is sleeved on the outside of the connecting rod 601, and a movable sleeve 603 is slidably sleeved on the connecting rod 601, a notch 6011 is opened on the connecting rod 601, and a protrusion 6031 matching the notch 6011 is provided on the inner wall of the movable sleeve 603, the The bottom end of the movable sleeve 603 is fixedly connected to the stirring shaft 401 by bolts, and the inner wall of the assembly seat 602 is provided with an annular guide groove 604 for driving the movable sleeve 603 to move up and down, and the outer wall of the movable sleeve 603 is movably equipped with a ball 605 that matches the annular guide groove 604; when working, when starting the equipment, the motor 501 is powered on and starts to run, and the output shaft of the motor 501 drives the rotating shaft 502 to rotate through the coupling. Since the connecting rod 601 and the rotating shaft 502 are firmly connected by bolts, the connecting rod 601 will rotate synchronously, and since the movable sleeve 603 matches the annular guide groove 604 on the inner wall of the assembly seat 602 through the ball 605 When the connecting rod 601 rotates, under the contour constraint of the annular guide groove 604, the movable sleeve 603 will slide up and down along the axial direction of the connecting rod 601, and the top end of the stirring shaft 401 and the bottom end of the movable sleeve 603 are fixed by bolts. Therefore, the stirring shaft 401 moves in a circular motion driven by the circular motion of the connecting rod 601, and at the same time, it reciprocates up and down due to the up and down sliding of the movable sleeve 603. The solenoid valves on the feed pipe 2 and the discharge pipe 3 are electromagnetically controlled valves. In the feeding stage, the control system sends an opening signal to the solenoid valve on the feed pipe 2 to open the valve, and the plastic powder raw materials enter the tank body 1 under the action of gravity or external conveying force;When discharging, the control system sends an opening signal to the solenoid valve on the discharging pipe 3, so that the valve of the discharging pipe 3 opens, and the mixed plastic powder is discharged from the tank body 1. The multi-directional movement of the stirring shaft 401 can make the material in the tank body be affected by the stirring force in the horizontal and vertical directions, so as to achieve all-round stirring. In the horizontal direction, the circular motion of the stirring shaft 401 drives the stirring paddle (mentioned below) to rotate and stir the material in the horizontal plane, so that the material moves relative to the horizontal circumference; in the vertical direction, the up and down reciprocating motion of the stirring shaft 401 drives the stirring paddle to stir the material up and down, changing the position and state of the material in the vertical direction. The materials at different levels are mixed with each other, which avoids the upper and lower stratification phenomenon that may be caused by the traditional stirring equipment that can only stir in a single plane. Through the design of the above structure of the present invention, the multi-directional movement of the stirring shaft 401 greatly enhances the stirring effect and efficiency, making the material mixing more uniform. Compared with the traditional stirring shaft that can only perform a single circular motion, the stirring shaft of the device can stir the material from multiple dimensions, so that the material can fully move in a three-dimensional space, effectively reducing the agglomeration of the material in the tank body, and for raw materials with different particle sizes, densities and chemical properties in the production process of plastic powder, more uniform mixing can be achieved, thereby improving the quality stability of plastic powder products. ;

[0028] Furthermore, the stirring mechanism 4 also includes a stirring paddle mechanism 402 mounted on the stirring shaft 401, the stirring paddle mechanism 402 includes a stirring rod 4021, one end of the stirring rod 4021 is provided with a connecting rod 4022 through a rotating rod, and one end of the connecting rod 4022 is fixedly provided with a conical cylinder stirrer 4023, and the stirring paddle mechanism 402 is arranged in an array and distributed up and down on the stirring shaft 401, and the directions of the conical cylinder stirrers 4023 in adjacent stirring paddle mechanisms 402 are opposite; when working, when the stirring shaft 401 is driven by the transmission mechanism 6 to move in multiple directions, the stirring paddle mechanism 402 moves accordingly, and the stirring rod 4021 acts as the stirring paddle mechanism 4 02, will follow the stirring shaft 401 to perform circular motion and up and down reciprocating motion, and the connecting rod 4022 is rotatably connected to the stirring rod 4021 through the rotating rod. When the stirring shaft 401 performs circular motion, due to the centrifugal force and the resistance of the material, the connecting rod 4022 will rotate around the rotating rod at a certain angle (the rotation angle of the connecting rod 4022 is proportional to the rotation speed of the stirring shaft 401. When the rotation speed of the stirring shaft 401 is high, the connecting rod 4022 tends to be parallel to the stirring rod 4021, and vice versa), driving the conical cylinder agitator 4023 to swing. At the same time, since the directions of the conical cylinder agitators 4023 in the adjacent stirring paddle mechanisms 402 are opposite, when the stirring shaft 40 When rotating, the upper and lower adjacent conical drum agitators 4023 will exert forces on the materials in different directions. The swing of the conical drum agitators 4023 themselves will cause the materials to produce complex vortexes and irregular flows. When the agitator shaft 401 rotates and drives the agitator rod 4021 to make circular motions, the upper conical drum agitator 4023 will push the upper layer of materials to one side and downward to form a downward stirring flow, while the lower conical drum agitator 4023 will push the lower layer of materials to one side and upward to form an upward stirring flow. In this way, strong convection will be formed between the materials at different levels, so that the materials will continuously exchange positions and mix within the entire height range of the tank body. In addition, the swing of the conical drum agitator 4023 will cause the materials to The material produces irregular flow in the horizontal direction. When the stirring shaft 401 reciprocates up and down, this swing and irregular flow will become more complicated, causing the material to collide and mix irregularly on horizontal planes at different heights, further breaking up the stratification and agglomeration of the material. Through the design of the stirring paddle mechanism 402 and the synergistic effect of multiple conical drum agitators 4023, a complex and efficient stirring effect is produced, which greatly enhances the mixing intensity and uniformity of the material. For the situation in which the plastic powder production is composed of a variety of raw materials of different properties, the stirring paddle mechanism can effectively break up the agglomeration of the material, fully mix the raw materials of different properties, and ensure that the composition of the final plastic powder product is uniform.

[0029] Furthermore, the interior of the tank body 1 is equipped with an isolation cover 7 for isolating the transmission mechanism 6, and the stirring shaft 401 slides through the isolation cover 7; when working, the isolation cover 7 is fixed inside the tank body 1, surrounding the transmission mechanism 6 therein, playing a role of protection and isolation. The isolation cover 7 can prevent the plastic powder material in the tank body from entering the working area of ​​the transmission mechanism 6, because during the stirring process, the material may fly or flow in the tank body, and the isolation cover 7 forms a physical barrier to prevent the material from entering the space where the transmission mechanism 6 is located. The setting of the isolation cover 7 significantly extends the service life of the transmission mechanism 6, and the protection of the isolation cover 7 reduces the maintenance cost of the equipment.

[0030] Furthermore, the inner wall of the tank body 1 is equipped with an assembly sleeve 8, and the inner diameter of the assembly sleeve 8 is staggered with soft convex strips 9; when working, during the stirring process, the stirring mechanism 4 stirs the material in the tank body, and the material forms a complex flow in the tank body. When the material contacts the soft convex strips 9 on the assembly sleeve 8, the soft convex strips 9 will block and disturb the material. Since the soft convex strips 9 are staggered, the material will continuously change its flow direction during the flow process, avoiding the material from forming a static or slowly flowing area near the inner wall of the tank body. The elastic deformation and recovery process of the soft convex strips 9 will bring additional stirring effect to the material, enhancing the stirring and mixing of the material near the inner wall of the tank body. When the material impacts the soft convex strips 9, the soft convex strips 9 will undergo elastic deformation, converting the impact force of the material into a stirring force on the material, causing the material to flow and mix more violently in the local area. Through the above-mentioned structural design of the present invention, the arrangement of the assembly sleeve 8 and the soft convex strips 9 The device enhances the stirring effect of the material near the inner wall of the tank body 1. In traditional stirring equipment, the material near the inner wall of the tank body 1 is prone to slow flow or accumulation, resulting in uneven mixing. The soft convex strips 9 of the device can effectively disturb the material near the inner wall, so that it participates in the overall stirring process, avoiding the accumulation of materials on the inner wall of the tank body 1 and flow dead zones, improving the overall stirring uniformity in the tank body 1, and ensuring that the material can be fully stirred at all positions in the tank body 1. The elastic properties of the soft convex strips 9 prevent excessive wear on the material and the tank body 1 during the stirring process. Compared with traditional hard stirring components, the soft convex strips 9 can reduce damage to material particles and wear on the tank body 1 while ensuring the stirring effect, thereby protecting the integrity of the equipment and materials, reducing the maintenance cost of the equipment, and also avoiding the decline in product quality due to material accumulation and wear, thereby ensuring the quality and production efficiency of plastic powder products.

[0031] Furthermore, a spiral stirring blade 10 is provided at the bottom end of the stirring shaft 401, and the spiral stirring blade 10 is located directly above the discharge pipe 3. When working, during the plastic powder mixing process, the stirring shaft 401 rotates continuously, driving the spiral stirring blade 10 at the bottom to rotate together, stirring the material at the bottom of the tank body 1, and further enhancing the comprehensiveness of the material mixing. When the mixing is completed and enters the discharge stage, the controller sends an instruction to the drive mechanism 5, and the drive mechanism 5 adjusts the direction of the motor 501 according to the instruction, thereby changing the rotation direction of the stirring shaft 401, so that the rotation direction of the spiral stirring blade 10 also changes accordingly. The thrust generated by the rotation of the spiral stirring blade 10 can push the material to move to the outlet position of the discharge pipe 3. Under the action of the spiral stirring blade 10, the material is continuously transported to the discharge port, realizing the function of auxiliary discharge. The spiral stirring blade 10 can perform targeted stirring on the material at the bottom of the tank body 1 during the mixing stage, making up for the lack of stirring of the stirring paddle mechanism 402 at the bottom of the tank body 1, so that the material in the tank body 1 is mixed more fully, and the uniformity and quality of the plastic powder mixing are improved. In the discharge stage, its auxiliary discharge function can effectively avoid the residue and accumulation of materials at the bottom of the tank body 1, speed up the discharge speed, and improve production efficiency.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A plastic powder production mixing equipment, characterized in that: The invention comprises a tank body (1), a bracket (01) is fixedly arranged at the bottom end of the tank body (1), a feeding pipe (2) for feeding and a discharging pipe (3) for discharging are arranged on the tank body (1), a stirring mechanism (4) for mixing and stirring is rotatably arranged in the tank body (1), a driving mechanism (5) for driving the stirring mechanism (4) to rotate is fixedly arranged on the tank body (1), a transmission mechanism (6) for making the stirring mechanism (4) move in multiple directions is arranged between the driving mechanism (5) and the stirring mechanism (4), the driving mechanism (5) comprises a motor (501) fixedly arranged on the tank body (1) through a fixing bracket, an output end of the motor (501) is equipped with a rotating shaft (502) through a coupling, the bottom end of the rotating shaft (502) extends into the interior of the tank body (1), and the stirring mechanism (4) includes a stirring shaft (401).

2. A plastic powder production mixing equipment according to claim 1, characterized in that: The transmission mechanism (6) includes a connecting rod (601) fixedly arranged at the bottom end of the rotating shaft (502) by bolts, and also includes an assembly seat (602) fixedly arranged inside the tank body (1) by bolts, the assembly seat (602) is sleeved on the outside of the connecting rod (601), a movable sleeve (603) is slidably sleeved on the connecting rod (601), the bottom end of the movable sleeve (603) is fixedly connected to the stirring shaft (401) by bolts, the inner wall of the assembly seat (602) is provided with an annular guide groove (604) for driving the movable sleeve (603) to move up and down, and the outer wall of the movable sleeve (603) is movably equipped with a ball (605) that matches the annular guide groove (604).

3. A plastic powder production mixing equipment according to claim 1, characterized in that: The stirring mechanism (4) further comprises a stirring paddle mechanism (402) mounted on the stirring shaft (401), wherein the stirring paddle mechanism (402) comprises a stirring rod (4021), one end of the stirring rod (4021) being provided with a connecting rod (4022) rotatably arranged via a rotating rod, and one end of the connecting rod (4022) being fixedly provided with a conical cylinder stirrer (4023).

4. A plastic powder production mixing device according to claim 1, characterized in that: The stirring paddle mechanisms (402) are arranged in groups and are distributed vertically on the stirring shaft (401).

5. A plastic powder production mixing device according to claim 1, characterized in that: The directions of the conical agitators (4023) in the adjacent agitator paddle mechanisms (402) are set in opposite directions.

6. A plastic powder production mixing equipment according to claim 1, characterized in that: The interior of the tank body (1) is equipped with an isolation cover (7) for isolating the transmission mechanism (6), and the stirring shaft (401) is slidably arranged to penetrate the isolation cover (7).

7. A plastic powder production mixing device according to claim 1, characterized in that: The inner wall of the tank body (1) is equipped with a mounting sleeve (8), and soft convex strips (9) are arranged in a staggered manner on the inner diameter of the mounting sleeve (8).

8. A plastic powder production mixing device according to claim 2, characterized in that: The connecting rod (601) is provided with a notch (6011), and the inner wall of the movable sleeve (603) is provided with a protrusion (6031) matching with the notch (6011).

9. A plastic powder production mixing device according to claim 1, characterized in that: A spiral stirring blade (10) is provided at the bottom end of the stirring shaft (401), and the spiral stirring blade (10) is located directly above the discharge pipe (3).

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