Three-dimensional stirring mixer and support arm connecting structure thereof

Abstract

The utility model provides a three-dimensional stirring mixer and its support arm connection structure, including the tank body that extends in the radial direction and is equipped with the rotating shaft and with the stirring support arm that is rotatingly connected with the tank body, the stirring support arm end portion is detachably connected with the mounting seat through the combination part, the mounting seat is equipped with the rotating hole that sleeves the rotating shaft, and is equipped with the positioning part to ensure the assembly precision. The combined part is connected with the through hole and the threaded hole through a radial bolt, and the positioning part can be a penetrating type positioning pin hole or a matched positioning step. Through the modular design, the support arm is quickly disassembled and assembled, the stable connection relation between the mounting base and the rotating shaft is reserved, and the equipment overhauling and cleaning process is greatly simplified. Compared with a traditional integrated support arm structure, the scheme has the advantages of high assembly efficiency and low maintenance cost while ensuring the operation stability, and is particularly suitable for equipment needing to be disassembled and assembled frequently.

Description

Technical Field

[0001] This utility model relates to the field of mixing machine technology, specifically to a support arm connection structure for a three-dimensional mixing machine, and a three-dimensional mixing machine having the support arm connection structure. Background Technology

[0002] A three-dimensional mixing machine, as shown in the utility model patent CN209646375U, is an advanced device that achieves efficient mixing of materials through three-dimensional spatial motion. It typically includes a mixing tank for holding the materials to be mixed. The outer wall of the tank is rotatably connected to a branch arm. During operation, the tank is usually driven by a motor or hydraulic cylinder to rotate about 30 degrees in a vertical plane under the action of a limiting mechanism, so as to prevent the material from being spilled out of the tank's inlet. This achieves better material turning and mixing. It can handle various powders, granules, liquids and other materials, and is suitable for materials with different viscosities and densities. It has a compact structure, occupies little space, and is convenient for installation and layout.

[0003] Its structure specifically includes an inclined tank, with a stirring arm rotating at the upper and lower parts of the tank with a 90-degree phase difference. The stirring arm rotates about a diameter of the tank's cross-section. The stirring arm is usually connected to a motor-driven stirring main arm via a coupling. The rotation of the stirring main arm sequentially drives the stirring arm and the tank to rotate, thereby achieving material mixing.

[0004] Traditional three-dimensional mixing machines use a structure where the support arm connects to the tank by opening a hole in the support arm and rotating with a radially arranged shaft in the tank. A bearing can be fitted between the shaft and the opening. However, this integrated support arm structure makes it difficult and inconvenient to separate the tank from the support arm during disassembly, cleaning, and maintenance. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a support arm connection structure for a three-dimensional mixing machine, so as to realize the quick disassembly and installation of the mixing tank and the support arm.

[0006] To achieve the above objectives, the present invention provides the following technical solution. In a first aspect, a support arm connection structure for a three-dimensional mixing machine includes a tank body with a rotating shaft extending radially outward, and a mixing support arm rotatably connected to the rotating shaft. The end of the mixing support arm is detachably provided with a mounting seat via a combination component. The mounting seat has a rotating hole fitted onto the rotating shaft, and a positioning component is provided between the mounting seat and the rotating support arm.

[0007] To reduce direct contact friction between the rotating shaft and the mounting base and extend the service life of the equipment, the technical solution provided by this utility model further includes a bearing embedded in the mounting base, with the inner side of the bearing sleeved on the end of the rotating shaft and the outer side of the bearing fitting against the inner wall of the mounting base.

[0008] Furthermore, the assembly includes a mounting base and a stirring arm, each having a matching through hole and a threaded hole, which are detachably connected by bolts arranged radially along the tank body.

[0009] To ensure a stable connection between the stirring arm and the mounting base and prevent relative rotation between them, the present invention provides a positioning component comprising a positioning pin hole through which the stirring arm and the mounting base are respectively provided, and a positioning pin detachably provided in the positioning pin hole connecting the stirring arm and the mounting base.

[0010] Furthermore, the positioning component includes a positioning step combination between the stirring arm and the mounting base, and the step surface fits together to limit the movement of the stirring arm and the mounting base.

[0011] Furthermore, the stirring arm is thinned from the side closest to the tank to the side furthest away from the tank, making its cross-section trapezoidal. This thinning measure is used to maintain the deformation of the inner side of the stirring arm within the working range when subjected to the weight of the tank, while reducing the weight of the stirring arm and facilitating the operator's disassembly work.

[0012] The cross-section of the stirring arm is trapezoidal, and its thickness gradually decreases from the side closer to the tank to the side farther away from the tank.

[0013] In a second aspect, a three-dimensional mixing machine has the arm connection structure described in at least one of the above-mentioned technical features.

[0014] Furthermore, the stirring arm is an integral U-shaped structure, with the arm connection structure symmetrically arranged at its left and right ends.

[0015] Furthermore, a rotating groove is laterally provided in the middle section of the support arm, and a stirring main arm is rotatably connected in the rotating groove through a rotary joint.

[0016] Furthermore, a connecting ring is fixedly installed on the outer periphery of the tank, and the rotating shaft is mounted on the connecting ring. The connecting ring can be welded to the outer wall of the tank, or a clamp-type connecting ring can be used as the fastener for the connecting shaft. This avoids the connection point between the connecting shaft and the tank from being subjected to radial tension along the rotating shaft, which could lead to deformation or breakage of the rotating shaft, thus maintaining the integrity of the tank and eliminating the risk of damage or leakage. The connecting ring can be an arc-shaped plate with a notch, i.e., an incomplete ring. Compared to a complete ring, when an incomplete ring is welded to the outer periphery of the tank, its fit with the tank can be adjusted using sheet metal methods, and then the rotating shaft is welded to its opposite ends.

[0017] The advantages and beneficial effects of this utility model are that by setting a mounting base between the stirring arm and the rotating shaft, the stirring arm and the rotating shaft are divided into different modules. The stirring arm can be disassembled from the rotating shaft by contacting the assembly components. At the same time, the connection between the mounting base and the rotating shaft is maintained, so that the stirring arm can be quickly installed and is convenient for inspection, cleaning and maintenance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the disassembly process of this utility model;

[0019] Figure 2 This is a schematic diagram of the combined action of this utility model;

[0020] Figure 3 This is an enlarged structural schematic diagram of point A in this utility model;

[0021] Figure 4 This is a cross-sectional view of the present invention along bb;

[0022] Figure 5 This is a partial structural schematic diagram of Embodiment 2 of this utility model;

[0023] Figure 6 This is a partial structural schematic diagram of Embodiment 5 of this utility model;

[0024] Reference numerals: 1-rotating shaft, 2-tank body, 3-stirring arm, 4-assembly component, 5-mounting base, 6-positioning component, 7-bearing, 8-through hole, 9-threaded hole, 10-bolt, 11-positioning pin hole, 12-positioning step, 13-rotating groove, 14-rotary joint, 15-stirring main arm, 16-connecting ring. Detailed Implementation

[0025] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0026] Example 1

[0027] Please see Figures 1-4 This embodiment provides a three-dimensional mixing machine, which includes a tank body 2. A connecting ring 16 is welded along the outer periphery of the tank body 2. A rotating shaft 1 extends outward from the connecting ring 16 along one diameter of the tank body 2. A bearing 7 is sleeved at the end of the rotating shaft 1, and the outer side of the bearing 7 is embedded in a mounting base 5. A positioning component 6 extends upward from the top surface of the mounting base 5, which includes a positioning step 12 and a through hole 8.

[0028] The three-dimensional mixer also includes a stirring arm 3 that mates with the positioning step 12. A combined component 4 is provided between the stirring arm 3 and the mounting base, specifically including a mounting base 5 with a through hole and the stirring arm 3 with a threaded hole 9 adapted to the through hole. In this embodiment, the axial directions of the threaded hole 9 and the through hole 8 are parallel to the axial direction of the rotation shaft 1. A bolt 10 is screwed into the threaded hole 9 through the through hole 8 to achieve a detachable connection between the stirring arm 3 and the mounting base 5.

[0029] The stirring arm 3 and the mounting base 5 are symmetrically arranged on both sides of the tank body 2. The stirring arm 3 is an integrally connected U-shaped structure. The middle section of the stirring arm 3 is provided with a rotating groove 13. The stirring main arm 15 is connected to the rotating groove 13 through a rotary joint 14.

[0030] After removing all the assembly parts 4 at both ends of the U-shaped stirring arm, the U-shaped stirring arm 3 can be detached from the mounting base 5 as a whole; conversely, the stirring arm 3 and the mounting base 5 can be assembled. During assembly, the positioning parts 6 can be used to ensure that the two are precisely aligned for easy cleaning and maintenance.

[0031] Example 2

[0032] A three-dimensional mixing machine differs from Embodiment 1 in that the positioning component 6 further includes a positioning pin hole 11 that passes sequentially through the mounting base 5 and the mixing arm 3. A positioning pin with a diameter adapted to the positioning pin hole 11 is slidably connected within the positioning pin hole 11, and the positioning pin can be removed as a whole along the axial direction of the positioning pin hole. Compared to Embodiment 1, the positioning pin has higher installation accuracy. The positioning step 12 will gradually fatigue and wear during long-term operation. The positioning pin, however, can be easily replaced.

[0033] Example 3

[0034] Please see Figure 5A three-dimensional mixing machine, differing from Embodiment 1, features a thinning of the mixing arm 3 from the side closest to the tank 2 towards the side furthest from the tank 2. This allows the side closest to the tank to withstand the tensile force from the tank's own weight while maintaining its deformation within the working range, thus reducing the weight of the mixing arm and saving material. The weight reduction also facilitates disassembly. The axial directions of the threaded hole 9 and the through hole 8 are perpendicular to the axial direction of the rotating shaft 1. This structure allows the bolts 10 to be kept within an operable space during disassembly and installation. Disassembly is not required by rotating the mixing arm 3 along the rotating shaft 1 to expose all bolts 10, nor is it necessary to use a beveled screwdriver to disassemble through the narrow gap between the mixing arm 3 and the mounting base.

[0035] Example 4

[0036] Please see Figure 5 A three-dimensional mixing machine, differing from Embodiment 1, features a positioning step 12 forming a groove-slider mechanism along the axial direction of the tank. The groove and slider are mutually adapted, improving the fit between the mixing arm and the mounting base. Figure 1 Positioning accuracy in the front and rear directions.

[0037] Example 5

[0038] Please see Figure 6 A three-dimensional mixing machine, which differs from Embodiment 1 in that the mounting base 5 is a left-right split structure, one side of which is integrally connected to the mixing arm 3, and the other side is detachably set through the assembly component 4.

[0039] The working principle of this invention lies in the modular design of the support arm connection structure, which dynamically decouples the stirring support arm from the rotating shaft. During operation, the main stirring arm 15 drives the stirring support arm 3 to move in three-dimensional space around the rotating shaft 1 via the rotary joint 14, while the connection between the support arm and the rotating shaft is stably transmitted by the mounting base 5. The stirring support arm 3 is rigidly connected to the mounting base 5 via bolts 10. During disassembly, only the bolts need to be removed to separate the support arm module, maintaining the stable assembly relationship between the mounting base and the rotating shaft. By decoupling the traditional integrated support arm into replaceable modules, the cleaning and maintenance time can be reduced compared to the traditional integrated structure, saving some of the disassembly and installation time.

[0040] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A support arm connection structure for a three-dimensional mixing machine, comprising a tank (2) with a radially extending rotating shaft (1) and a mixing support arm (3) rotatably connected to the rotating shaft (1), characterized in that: The end of the stirring arm (3) is detachably provided with a mounting base (5) via a combination component (4), and the mounting base (5) is provided with a rotating hole for fitting the rotating shaft (1); a positioning component (6) is provided between the mounting base (5) and the stirring arm (3).

2. The arm connection structure according to claim 1, characterized in that: The mounting base (5) is fitted with a bearing (7), the inner side of the bearing (7) is sleeved with the end of the rotating shaft (1), and the outer side is in contact with the inner wall of the mounting base (5).

3. The arm connection structure according to claim 2, characterized in that: The assembly (4) includes a through hole (8) and a threaded hole (9) provided on the mounting base (5) and the stirring arm (3), and is connected by bolts (10) arranged radially along the tank body (2).

4. The arm connection structure according to claim 2, characterized in that: The positioning component (6) includes a positioning pin hole (11) that passes through the stirring arm (3) and the mounting base (5).

5. The arm connection structure according to claim 2, characterized in that: The positioning component (6) includes a positioning step (12) disposed between the stirring arm (3) and the mounting base (5).

6. The arm connection structure according to claim 2, characterized in that: The cross-section of the stirring arm (3) is trapezoidal, and its thickness gradually decreases from the side closer to the tank (2) to the side farther away from the tank (2).

7. A three-dimensional mixing machine, characterized in that: It includes the arm connection structure as described in any one of claims 1-6.

8. The three-dimensional mixing machine according to claim 7, characterized in that: The stirring arm (3) has a U-shaped structure, with the arm connection structure symmetrically arranged at its left and right ends.

9. The three-dimensional mixing machine according to claim 7, characterized in that: The middle section of the stirring support arm (3) is provided with a rotating groove (13), and the stirring main arm (15) is connected in the rotating groove (13) through a rotary joint (14).

10. The three-dimensional mixing machine according to claim 7, characterized in that: A connecting ring (16) is fixedly provided on the outer periphery of the tank body (2), and a rotating shaft (1) is provided on the connecting ring (16).

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