Rotary vane type plastic mixing machine

Abstract

The utility model relates to the technical field of plastic mixing machines, in particular to a rotary vane type plastic mixing machine which comprises a mixing barrel, a servo motor is fixedly connected to the mixing barrel, a mixing shaft with a cross-shaped cross section is fixedly connected to the driving end of the servo motor, a rectangular groove and a cavity which are communicated with each other are formed in the mixing shaft, and a rotary vane is arranged in the rectangular groove. A rectangular rod is inserted into the rectangular groove, the upper end of the rectangular rod is fixedly sleeved with a fixed cylinder, and the outer side of the fixed cylinder is fixedly connected with a plurality of stirring and rotating pieces; a sliding rod is connected into the cavity through a spring, the lower end of the sliding rod is connected with a plurality of clamping blocks through a plurality of hinge rods, and each clamping block is connected with the inner wall of the fixing cylinder in a clamped mode. According to the utility model, the problem that the rotary vane of the existing rotary vane type stirrer is easy to fall off is effectively solved, the connection stability and the stirring efficiency are improved, the requirements of high efficiency and stable stirring in plastic processing production are met, the maintenance is convenient, and the long-term reliable operation of equipment is ensured.

Description

Technical Field

[0001] This utility model relates to the field of plastic mixing machine technology, and in particular to a rotary vane type plastic mixing machine. Background Technology

[0002] With the continuous development of society and the continuous progress of science and technology, the technology related to plastic mixing machines is also constantly improving. In the processing and production process of plastic products, plastic granule mixers are an indispensable piece of equipment. Their core function is to fully mix basic plastic granules with specific chemical additives or color powder granules, so that the final product has specific properties or the required color.

[0003] The three-dimensional rotary vane plastic mixer, with its reversible motor and three-dimensional vane structure, can achieve thorough mixing of plastic granules without dead angles, resulting in excellent mixing efficiency. However, existing rotary vane mixers still have certain drawbacks: after repeated disassembly and reassembly of the vanes, the connection strength between the vanes and the mixing shaft is easily affected and reduced, which can lead to vanes falling off during equipment operation, thus adversely affecting the mixing efficiency. Utility Model Content

[0004] The purpose of this utility model is to solve the following shortcomings in the prior art: after the rotary vane is disassembled and maintained, the connection strength between the rotary vane and the stirring shaft is easily affected and reduced due to repeated disassembly and installation. During the operation of the equipment, the rotary vane is prone to fall off, which in turn has an adverse effect on the stirring efficiency. Therefore, a rotary vane plastic mixer is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A rotary vane type plastic mixer includes a mixing drum, a servo motor is fixedly connected to the mixing drum, a stirring shaft with a cross-shaped cross section is fixedly connected to the drive end of the servo motor, a rectangular groove and a cavity are opened inside the stirring shaft, a rectangular rod is inserted in the rectangular groove, a fixed cylinder is fixedly sleeved on the upper end of the rectangular rod, and a plurality of rotary vanes are fixedly connected to the outside of the fixed cylinder.

[0007] A sliding rod is connected to the cavity by a spring. The lower end of the sliding rod is connected to multiple locking blocks by multiple hinge rods. Each locking block is engaged with the inner wall of the fixed cylinder. A limit assembly is provided on the stirring shaft.

[0008] Preferably, the limiting component includes multiple limiting grooves formed on the stirring shaft, each of the locking blocks is slidably connected to the corresponding limiting groove, and each of the locking blocks is fixedly connected to a limiting strip, the limiting strip being slidably connected to the stirring shaft.

[0009] Preferably, a sealing ring is fixedly connected to the inner wall of the fixed cylinder, and the surface of the sealing ring is in contact with the surface of the stirring shaft.

[0010] Preferably, two symmetrically arranged positioning rods are fixedly connected to the upper end face of the stirring shaft, and two positioning holes for connecting the positioning rods are provided on the fixed cylinder.

[0011] Preferably, the upper surface of the fixed cylinder is provided with a convex groove, an I-shaped block is slidably connected in the convex groove, a concave block is fixedly provided on one side of the I-shaped block, each of the positioning rods is provided with a slot for connecting the concave block, and the I-shaped block is connected to the inner wall of the convex groove by bolts.

[0012] Preferably, each of the stirring blades has multiple oblique openings, and the upper inner wall of each oblique opening has multiple serrated blocks.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The lower end of the rectangular rod is inserted into the rectangular groove of the stirring shaft. Two positioning rods pass through two positioning holes, and the rectangular rod will press down on the sliding rod. The tilt angle of each hinge rod changes, and the hinge rod pushes the locking block to move, so that the locking block engages with the inner wall of the fixed cylinder, realizing the initial connection of the stirring shaft, the fixed cylinder and the stirring vane. Then, the I-shaped block is pushed so that the concave block engages with the locking groove of the positioning rod. Then, the I-shaped block is fixed to the inner wall of the convex groove with bolts, further strengthening the connection between the fixed cylinder and the stirring shaft and improving the overall stability. This rotary vane plastic mixer can effectively solve the problem of easy vane detachment in existing rotary vane mixers, improve connection stability and mixing efficiency, meet the needs of efficient and stable mixing in plastic processing and production, and facilitate maintenance, ensuring long-term reliable operation of the equipment. Attached Figure Description

[0015] Figure 1 This is a front structural diagram of a rotary vane plastic mixer proposed in this utility model;

[0016] Figure 2 This is a frontal three-dimensional structural diagram of the fixed cylinder and the stirring blade in this utility model;

[0017] Figure 3 This is a schematic diagram of the front internal structure of the fixed cylinder and the stirring blade in this utility model;

[0018] Figure 4 for Figure 2 A magnified view of part A in the image;

[0019] Figure 5 for Figure 3 A magnified view of part B in the image.

[0020] In the diagram: 1. Mixing bucket, 2. Fixed cylinder, 3. Mixing vane, 4. Serrated block, 5. Positioning rod, 6. Inclined opening, 7. Mixing shaft, 8. I-shaped block, 9. Concave block, 10. Convex groove, 11. Bolt, 12. Rectangular rod, 13. Spring, 14. Sliding rod, 15. Limiting strip, 16. Hinge rod, 17. Locking block, 18. Sealing ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] The terms used in this utility model, such as "upper", "lower", "left", "right", "middle" and "one", are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0023] Reference Figures 1-5 A rotary vane plastic mixer includes a mixing tank 1, a servo motor fixedly connected to the mixing tank 1, a stirring shaft 7 with a cross-shaped cross section fixedly connected to the drive end of the servo motor, a rectangular groove and a cavity connected to each other inside the stirring shaft 7, a rectangular rod 12 inserted into the rectangular groove, a fixed cylinder 2 fixedly sleeved on the upper end of the rectangular rod 12, a plurality of stirring vanes 3 fixedly connected to the outside of the fixed cylinder 2, a sliding rod 14 connected to the cavity by a spring 13, a plurality of locking blocks 17 connected to the lower end of the sliding rod 14 by a plurality of hinge rods 16, each locking block 17 engaging with the inner wall of the fixed cylinder 2, and a limit assembly provided on the stirring shaft 7.

[0024] refer to Figure 5 The limiting assembly includes multiple limiting grooves on the stirring shaft 7. Each locking block 17 is slidably connected to the corresponding limiting groove. Each locking block 17 is fixedly connected to a limiting strip 15, which is slidably connected to the stirring shaft 7. When the tilt angles of each hinge rod 16 change simultaneously, the hinge rod 16 pushes the locking block 17 to move. The locking block 17 slides along the limiting groove, so that the locking block 17 engages with the inner wall of the fixed cylinder 2, realizing the initial connection of the stirring shaft 7, the fixed cylinder 2, and the stirring blade 3. A sealing ring 18 is fixedly connected to the inner wall of the fixed cylinder 2. The surface of the sealing ring 18 is in contact with the surface of the stirring shaft 7. The sealing ring 18 in contact with the surface of the stirring shaft 7 can enhance the connection sealing and effectively prevent materials from entering the space between the stirring shaft 7 and the fixed cylinder 2.

[0025] refer to Figure 4Two symmetrically arranged positioning rods 5 are fixedly connected to the upper end face of the stirring shaft 7. Two positioning holes for connecting the positioning rods 5 are opened on the fixed cylinder 2. By inserting the two positioning rods 5 at the upper end of the stirring shaft 7 into the corresponding positioning holes of the fixed cylinder 2, preliminary positioning can be achieved. A convex groove 10 is opened on the upper surface of the fixed cylinder 2. An I-shaped block 8 is slidably connected in the convex groove 10. A concave block 9 is fixedly set on one side of the I-shaped block 8. Each positioning rod 5 is provided with a slot for connecting the concave block 9. The I-shaped block 8 is connected to the inner wall of the convex groove 10 by bolts 11. Pushing the I-shaped block 8 makes it slide in the convex groove 10, so that the concave block 9 is locked into the slot of the positioning rod 5. Then, the bolts 11 pass through the I-shaped block 8 and are threadedly connected to the inner wall of the convex groove 10 to further strengthen the connection between the fixed cylinder 2 and the stirring shaft 7 and improve the overall stability.

[0026] refer to Figure 2 Each mixing blade 3 has multiple inclined slots 6, and the upper inner wall of each inclined slot 6 has multiple serrated blocks 4. When the servo motor is started, the motor drive end drives the stirring shaft 7 to rotate. The stirring shaft 7, through its connection with the fixed cylinder 2, drives the multiple mixing blades 3 to rotate synchronously. During the rotation, the inclined slots 6 and serrated blocks 4 on the mixing blades 3 stir and agitate the plastic granules and other materials in the mixing tank 1. The inclined slots 6 change the flow direction of the materials, and the serrated blocks 4 enhance the shearing and mixing effect on the materials, achieving efficient mixing without dead corners. The servo motor can run in both directions, changing the rotation direction of the stirring shaft 7, and thus changing the stirring direction of the mixing blades 3, so that the materials form a more complex flow trajectory in the mixing tank 1, improving the mixing uniformity and meeting the mixing needs of different plastic raw materials, such as mixing different colored masterbatches, adding additives, etc., ensuring that the composition and color of the mixed materials are uniform.

[0027] In this invention, during installation, the lower end of the rectangular rod 12 is inserted into the rectangular groove of the stirring shaft 7. During this process, the two positioning rods 5 pass through the two positioning holes, and the rectangular rod 12 presses down on the sliding rod 14. As the sliding rod 14 moves downward, the spring 13 deforms because its two ends are fixedly connected to the upper inner wall of the cavity and the sliding rod 14, respectively. Since the two ends of each hinge rod 16 are hinged to the sliding rod 14 and the corresponding locking block 17, the inclination angle of each hinge rod 16 changes. The hinge rod 16 pushes the locking block 17 to move, and the locking block 17 slides along the limiting groove, so that the locking block 17 engages with the inner wall of the fixed cylinder 2, thereby achieving stirring. The initial connection of shaft 7, fixed cylinder 2 and stirring vane 3 is completed. At this time, sealing ring 18 fits against the surface of stirring shaft 7 to enhance the connection sealing. Then, push I-shaped block 8 to slide in convex groove 10, so that concave block 9 is engaged in the slot of positioning rod 5. Then, use bolt 11 to fix I-shaped block 8 to the inner wall of convex groove 10 to further strengthen the connection between fixed cylinder 2 and stirring shaft 7 and improve overall stability. This rotary vane plastic mixer can effectively solve the problem of easy vane detachment in existing rotary vane mixers, improve connection stability and mixing efficiency, meet the needs of efficient and stable mixing in plastic processing and production, and facilitate maintenance to ensure long-term reliable operation of the equipment.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", "fixing", etc., should be interpreted broadly. For example, they can refer to fixed connection, detachable connection, or integral connection; they can refer to mechanical connection or electrical connection; they can refer to direct connection or indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0029] 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 rotary vane type plastic mixer, comprising a mixing tank (1), characterized in that, A servo motor is fixedly connected to the mixing tank (1). A stirring shaft (7) with a cross-shaped cross section is fixedly connected to the drive end of the servo motor. A rectangular groove and a cavity are opened inside the stirring shaft (7). A rectangular rod (12) is inserted into the rectangular groove. A fixed cylinder (2) is fixedly sleeved on the upper end of the rectangular rod (12). Multiple stirring blades (3) are fixedly connected to the outside of the fixed cylinder (2). The cavity is connected to a slide rod (14) by a spring (13). The lower end of the slide rod (14) is connected to multiple locking blocks (17) by multiple hinge rods (16). Each locking block (17) is engaged with the inner wall of the fixed cylinder (2). A limit assembly is provided on the stirring shaft (7).

2. The rotary vane plastic mixer according to claim 1, characterized in that... The limiting component includes multiple limiting grooves opened on the stirring shaft (7), each of the locking blocks (17) is slidably connected to the corresponding limiting groove, and each of the locking blocks (17) is fixedly connected to a limiting strip (15), the limiting strip (15) and the stirring shaft (7) are slidably connected.

3. The rotary vane plastic mixer according to claim 1, characterized in that, A sealing ring (18) is fixedly connected to the inner wall of the fixed cylinder (2), and the surface of the sealing ring (18) is in contact with the surface of the stirring shaft (7).

4. The rotary vane type plastic mixer according to claim 1, characterized in that, The upper end face of the stirring shaft (7) is fixedly connected to two symmetrically arranged positioning rods (5), and the fixed cylinder (2) has two positioning holes for connecting the positioning rods (5).

5. A rotary vane plastic mixer according to claim 4, characterized in that, The upper surface of the fixed cylinder (2) is provided with a convex groove (10), and an I-shaped block (8) is slidably connected in the convex groove (10). A concave block (9) is fixedly provided on one side of the I-shaped block (8). Each positioning rod (5) is provided with a slot for connecting the concave block (9). The I-shaped block (8) is connected to the inner wall of the convex groove (10) by bolts (11).

6. A rotary vane plastic mixer according to claim 1, characterized in that, Each of the stirring blades (3) has multiple oblique openings (6), and each oblique opening (6) has multiple serrated blocks (4) on its upper inner wall.

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