A powder gathering and initial mixing device

Abstract

This utility model discloses a powder gathering and initial mixing device, including coaxially nested first and second powder tubes and a mounting frame, forming a feeding gap between them. A reverse feeding pipe is inclined at the top to respectively introduce the first and second powders. A vertical reciprocating mechanism on the mounting frame drives a conical dispersing disc via a connecting rod, causing it to perform vertical reciprocating and rotating motions within the first powder tube. The teeth on the side wall of the dispersing disc and the paddles on its upper surface work together to "bounce" the second powder, allowing it to fully collide and interweave with the first raw material powder falling from the feeding gap, achieving multi-angle and multi-directional initial mixing. This device, as an integrated feeding and initial mixing unit, effectively reduces the load on subsequent mixing devices. It has a simple and stable structure, significantly improves powder mixing uniformity and production efficiency, reduces energy consumption and costs, and is suitable for the powder pretreatment stage in refractory material production.

Description

Technical Field

[0001] This utility model relates to the field of powder mixing equipment technology, and in particular to a powder aggregation and initial mixing device. Background Technology

[0002] In the production and preparation of refractory materials, the uniform mixing of powder directly determines the final performance and quality of the product. Currently, traditional refractory powder mixing equipment mostly adopts a single stirring, tumbling, or gravity mixing principle, such as vertical mixers using spiral blades or drum-type equipment that relies on container rotation to achieve material mixing. These devices have significant drawbacks in practical applications: traditional equipment can usually only provide unidirectional or single-form movement, making it difficult for materials to achieve sufficient contact from multiple angles and directions during the mixing process. For refractory powders with large differences in density and particle size, stratification or localized uneven mixing is very likely to occur; most mixing equipment separates the feeding process from the mixing process, lacking the function of preliminary mixing during the material conveying stage. This forces the subsequent main mixing unit to undertake all the mixing tasks, increasing the workload of the equipment, prolonging the overall mixing cycle, and reducing production efficiency.

[0003] With the increasing demands for mixing efficiency and uniformity in refractory material production processes, there is an urgent need for a device that can achieve preliminary mixing during material feeding and enhance dispersion and stirring effects through innovative structures. By improving the coordination between feeding and mixing, and optimizing the trajectory of powder movement, the working pressure of the main mixing equipment can be reduced, thereby improving the overall production efficiency and product quality of refractory materials. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model proposes a powder aggregation and initial mixing device.

[0005] This utility model proposes a powder gathering and initial mixing device, including a first powder tube, a second powder tube, and a mounting frame; the second powder tube is coaxially disposed inside the first powder tube, and a feeding gap is formed between the inner wall of the first powder tube and the outer wall of the second powder tube; the top of the first powder tube is inclinedly connected to a first feed pipe, and the top of the second powder tube is inclinedly installed with a second feed pipe, which penetrates the side wall of the first powder tube and extends outward.

[0006] The mounting bracket is located on the upper part of the first powder tube, and a vertical reciprocating mechanism is mounted on the mounting bracket. A connecting rod is provided in the inner cavity of the second powder tube, and the axis of the connecting rod coincides with the axis of the second powder tube. A dispersing disc is installed at the bottom end of the connecting rod. The dispersing disc is located below the bottom end of the second powder tube and in the inner cavity of the first powder tube. The top end of the connecting rod passes through the side wall of the second feed tube and the first feed tube in sequence and is connected to the vertical reciprocating mechanism. The vertical reciprocating mechanism drives the dispersing disc to reciprocate in the vertical direction through the connecting rod.

[0007] Preferably, the first feed pipe and the second feed pipe are inclined in opposite directions.

[0008] Preferably, the dispersion disc is conical with the tip pointing upwards, and multiple sets of insert teeth are installed on the sidewall of the dispersion disc, arranged in a ring around the center of the dispersion disc's circumference. The insert teeth can be inserted into the refractory raw material powder to enhance the mixing effect of the two refractory powders.

[0009] Preferably, the upper surface of the dispersing disk is provided with multiple sets of paddles, and each set of paddles is distributed in a ring around the center of the circumference of the dispersing disk.

[0010] Preferably, an internally threaded sleeve is installed on the mounting bracket, and the middle part of the connecting rod is provided with a thread that matches the internally threaded sleeve. The connecting rod is rotatably connected to the vertical reciprocating mechanism. When the connecting rod performs vertical reciprocating motion, it can drive the connecting rod to reciprocate around its axis.

[0011] Preferably, the vertical reciprocating mechanism includes a motor and a lifting frame. The lifting frame is vertically slidably connected to the mounting frame. A slot is provided on the lifting frame. The drive shaft of the motor is connected to a turntable. A retaining shaft is installed at an eccentric position on the turntable and is engaged in the slot. The top end of the connecting rod is connected to the lifting frame. When the motor drives the turntable to rotate, it can drive the lifting frame to reciprocate in the vertical direction.

[0012] The powder gathering and initial mixing device proposed in this utility model has the following beneficial effects: As an integrated feeding and initial mixing device, this device achieves orderly gathering and initial mixing of two refractory material powders during the feeding process through the coaxial nesting structure of the first powder pipe and the second powder pipe, and the design of the feed pipe with opposite inclination directions, thereby reducing the workload of the subsequent mixing device.

[0013] The unique combination of vertical reciprocating motion and rotational motion of the dispersing disc can "jump" the second powder, breaking its original falling state. With the help of the insert teeth and the paddle structure, the second powder can be dispersed and stirred with the first powder in a complex motion trajectory within a limited space, significantly improving the initial mixing uniformity and greatly improving the overall mixing efficiency.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a partial structural schematic diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the vertical reciprocating mechanism in this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the dispersion disc in this utility model;

[0019] The following are the labels in the diagram: 1. First powder pipe; 101. First feed pipe; 2. Second powder pipe; 201. Second feed pipe; 3. Mounting frame; 301. Turntable; 302. Shaft clamp; 303. Lifting frame; 4. Dispersing disc; 401. Tooth pick; 402. Paddle; 403. Connecting rod; 404. Internal threaded sleeve. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] like Figures 1-4 The device shown is a powder aggregation and initial mixing device. As a feeding device, it achieves efficient aggregation and initial mixing of two refractory powder raw materials through a unique structural design before conveying them to the mixing device. This reduces the processing time and energy consumption of the subsequent mixing device, and improves the mixing uniformity and overall production efficiency.

[0022] The powder gathering and initial mixing device provided by the present invention consists of a first powder pipe 1, a second powder pipe 2, and a mounting frame 3. The second powder pipe 2 is coaxially nested inside the first powder pipe 1, forming a feeding gap between them. The top of the first powder pipe 1 is inclinedly connected to a first feed pipe 101 for introducing the first refractory material powder; the top of the second powder pipe 2 is inclinedly mounted with a second feed pipe 201 for introducing the second powder, and the second feed pipe 201 penetrates the side wall of the first powder pipe 1 and extends outward. Mounting bracket 3 is located on the upper part of the first powder tube 1, and a vertical reciprocating mechanism is mounted on it; the inner cavity of the second powder tube 2 is provided with a connecting rod 403, the axis of the connecting rod 403 coincides with the axis of the second powder tube 2, a dispersing disc 4 is mounted on the bottom end of the connecting rod 403, the dispersing disc 4 is located below the bottom end of the second powder tube 2 and in the inner cavity of the first powder tube 1, the top end of the connecting rod 403 passes through the side wall of the second feed tube 201 and the first feed tube 101 in sequence and is connected to the vertical reciprocating mechanism, the vertical reciprocating mechanism drives the dispersing disc 4 to reciprocate in the vertical direction through the connecting rod 403.

[0023] Furthermore, the first feed pipe 101 and the second feed pipe 201 are inclined in opposite directions, causing the two powders to converge in the first powder pipe 1 with different movement trajectories, creating conditions for initial mixing. The dispersing disk 4 is conical with the tip pointing upwards, and its sidewalls are circumferentially distributed with multiple sets of insert teeth 401, while its upper surface is also circumferentially distributed with multiple sets of paddles 402. When the dispersing disk 4 moves, the insert teeth 401 and paddles 402 disperse and stir the powder, enhancing the initial mixing effect.

[0024] The internal threaded sleeve 404 on the mounting frame 3 engages with the matching thread in the middle of the connecting rod 403, causing the connecting rod 403 to rotate back and forth around its axis during vertical reciprocating motion, further improving the uniformity of powder mixing. The vertical reciprocating mechanism includes a motor and a lifting frame 303. The lifting frame 303 can slide vertically on the mounting frame 3, and its slot engages with the eccentrically mounted retaining shaft 302 on the turntable 301 connected to the motor drive shaft. The top of the connecting rod 403 is connected to the lifting frame 303. When the motor drives the turntable 301 to rotate, it drives the lifting frame 303 to reciprocate vertically, realizing the vertical movement of the dispersing disc 4.

[0025] Working principle

[0026] During operation, the first batch of refractory raw material powder enters the first powder pipe 1 through the first feed pipe 101 and falls through the discharge gap; the second batch of powder enters the second powder pipe 2 through the second feed pipe 201 and falls from the bottom of the second powder pipe 2 onto the dispersion disc 4. The motor in the vertical reciprocating mechanism drives the turntable 301 to rotate, and the turntable 301 drives the lifting frame 303 to perform vertical reciprocating motion on the mounting frame 3 through the clamping shaft 302, thereby driving the connecting rod 403 and the dispersion disc 4 to reciprocate in the vertical direction. Due to the threaded engagement between the connecting rod 403 and the internal threaded sleeve 404, the dispersion disc 4 also reciprocates around its own axis during vertical movement.

[0027] The reciprocating motion of the dispersing disc 4 in the vertical direction continuously "bounces" the second powder falling on the disc, causing it to deviate from its original falling trajectory and collide and intertwine with the powder falling from the feeding gap in a more complex spatial path. At the same time, the rotation of the dispersing disc 4, in conjunction with the insert teeth 401 and the paddle 402, further disperses and stirs the powder. The synergistic effect of these two actions ensures that the two powders come into full contact in all directions, achieving efficient preliminary mixing. The mixed powder is discharged from the bottom of the first powder pipe 1 and directly conveyed to the subsequent mixing device, preparing for deep mixing.

[0028] Install this powder gathering and initial mixing device on the material conveying path of the production line, connecting the device's outlet with the inlet of the subsequent mixing device. Connect the first feed pipe 101 to the first powder conveying pipe, and the second feed pipe 201 to the second powder conveying pipe. Turn on the motor and adjust the motor speed to a suitable value according to the processing capacity of the subsequent mixing device and the characteristics of the powder, so that the dispersing disc 4 performs vertical reciprocating motion and rotational motion at a set frequency.

[0029] In actual operation, the height and range of the second powder being "bounced" by the dispersing disc 4 can be observed, as well as the mixing state of the two powders. If the mixing effect is not good, the motor speed and the motion parameters of the dispersing disc 4 can be flexibly adjusted. By changing the amplitude and frequency of the vertical movement of the dispersing disc 4, the "powder-bounced" effect can be optimized to achieve the best initial mixing and conveying effect, ensuring that the mixed powder is smoothly conveyed to the subsequent mixing device for deep mixing.

[0030] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A powder aggregation and initial mixing device, characterized in that, It includes a first powder tube (1), a second powder tube (2), and a mounting bracket (3); the second powder tube (2) is coaxially disposed inside the first powder tube (1), and a feeding gap is formed between the inner wall of the first powder tube (1) and the outer wall of the second powder tube (2); the top of the first powder tube (1) is inclinedly connected to a first feed tube (101), and the top of the second powder tube (2) is inclinedly installed with a second feed tube (201), and the second feed tube (201) penetrates the side wall of the first powder tube (1) and extends outward; The mounting bracket (3) is located on the upper part of the first powder tube (1), and a vertical reciprocating mechanism is installed on the mounting bracket (3); the inner cavity of the second powder tube (2) is provided with a connecting rod (403), the axis of the connecting rod (403) coincides with the axis of the second powder tube (2), a dispersing disc (4) is installed at the bottom end of the connecting rod (403), the dispersing disc (4) is located below the bottom end of the second powder tube (2) and in the inner cavity of the first powder tube (1), the top end of the connecting rod (403) passes through the side wall of the second feed tube (201) and the first feed tube (101) in sequence and is connected to the vertical reciprocating mechanism, the vertical reciprocating mechanism drives the dispersing disc (4) to reciprocate in the vertical direction through the connecting rod (403).

2. The powder aggregation and initial mixing device according to claim 1, characterized in that, The first feed pipe (101) and the second feed pipe (201) are inclined in opposite directions.

3. The powder aggregation and initial mixing device according to claim 1, characterized in that, The dispersion disk (4) is conical with the tip pointing upwards. Multiple sets of insert teeth (401) are installed on the side wall of the dispersion disk (4), and the multiple sets of insert teeth (401) are distributed in a ring around the center of the circumference of the dispersion disk (4).

4. The powder aggregation and initial mixing device according to claim 3, characterized in that, The upper surface of the dispersion disk (4) is provided with multiple sets of paddles (402), and each set of paddles (402) is distributed in a ring around the center of the circumference of the dispersion disk (4).

5. The powder gathering and initial mixing device according to claim 1, characterized in that, An internal threaded sleeve (404) is installed on the mounting bracket (3). The middle part of the connecting rod (403) is provided with a thread that is compatible with the internal threaded sleeve (404). The connecting rod (403) is rotatably connected to the vertical reciprocating mechanism. When the connecting rod (403) makes a vertical reciprocating motion, it can drive the connecting rod (403) to reciprocate around its axis.

6. The powder gathering and initial mixing device according to claim 1, characterized in that, The vertical reciprocating mechanism includes a motor and a lifting frame (303). The lifting frame (303) is vertically slidably connected to the mounting frame (3). A slot is provided on the lifting frame (303). The drive shaft of the motor is connected to a turntable (301). A retaining shaft (302) is installed on the turntable (301) at an eccentric position. The retaining shaft (302) is engaged in the slot. The top end of the connecting rod (403) is connected to the lifting frame (303). When the motor drives the turntable (301) to rotate, it can drive the lifting frame (303) to reciprocate in the vertical direction.

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