Double-helix mixture stirring shaft

Abstract

The utility model relates to the technical field of mixture stirring equipment, in particular to a double-helix mixture stirring shaft which comprises a stirring shaft, two rows of stirring arms are arranged on the peripheral wall of the stirring shaft in a double-helix surrounding mode, each row of stirring arms comprises a plurality of stirring arms, and stirring blades are arranged at the ends, away from the stirring shaft, of the stirring arms. When a mixture is stirred, the stirring arms and the stirring blades are arranged in a double-helix manner, and the mixture stirred by the first stirring blade is pushed by the second stirring blade, so that an axial pushing force is generated on the mixture, and the mixture can move up and down and also can move axially, so that the mixture is stirred more sufficiently, the stirring time is shortened, and the stirring efficiency is improved. And the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of mixing equipment, and in particular to a double-spiral mixing shaft. Background Technology

[0002] The mixing shaft of the mixing equipment mainly consists of a mixing shaft, mixing arms, and mixing blades. The mixing blades are fixed to the mixing arms, and the mixing arms are fixed to the mixing shaft. Multiple mixing arms are arranged in multiple rows and vertically symmetrically. When mixing the mixture, the rotation of the mixing blades is just a simple circular motion, and the mixture is only mixed from top to bottom. The mixing time is relatively long, and the production efficiency needs to be improved. Utility Model Content

[0003] In order to improve production efficiency by achieving both vertical and axial mixing during material mixing, this utility model provides a double-helix mixing shaft.

[0004] The double-helix mixing shaft provided by this utility model adopts the following technical solution:

[0005] A double-helix mixing shaft includes a mixing shaft with two rows of mixing arms arranged in a double helix around the peripheral wall of the mixing shaft. Each row of mixing arms contains multiple mixing arms, and a mixing blade is provided at the end of the mixing arm away from the mixing shaft.

[0006] By adopting the above technical solution, when mixing the mixture, since the mixing arm and mixing blade are arranged in a double helix, the mixture mixed by the first mixing blade is then pushed by the second mixing blade, thereby generating an axial pushing force on the mixture. This allows the mixture to move both up and down and axially, thus making the mixture more thoroughly mixed, shortening the mixing time, and improving production efficiency.

[0007] Optionally, a connecting mechanism is provided between the mixing blade and the mixing arm. The connecting mechanism includes a connecting column. The mixing arm is tubular, and a first groove and a third groove are axially formed on the inner wall of the mixing arm. The ends of the first groove and the third groove near the middle of the mixing arm are connected by a second groove. The first groove is connected to the end face of the mixing arm and its length is greater than that of the third groove. One end of the connecting column is connected to the mixing blade, and a slider is fixedly connected to the peripheral wall of the other end of the connecting column. The slider is detachably and slidably connected to the first groove, the second groove and the third groove. A compression spring is provided inside the mixing arm to elastically support the connecting column.

[0008] By adopting the above technical solution, when replacing the old mixing blade, pressing and rotating the connecting column can move the slider to the removal position, thereby removing the mixing blade. After replacing it with a new one, under the elastic support of the compression spring and the action of centrifugal force during the mixing process, the slider is stably positioned in the third groove, thus ensuring a stable connection between the mixing blade and the mixing arm. The use of this connection mechanism improves the convenience of replacing the mixing blade.

[0009] Optionally, a protective cap is fitted and fixed on the connecting column. The protective cap can be detachably fitted onto the mixing arm, and a sealing ring is embedded in the inner wall of the protective cap for sealing contact with the outer wall of the mixing arm.

[0010] By adopting the above technical solution, the protective cap and sealer have a sealing effect, which makes it easy for the staff to rotate the connecting shaft when the mixing blade needs to be replaced.

[0011] Optionally, the end of the connecting column away from the mixing shaft is provided with an installation groove, and the mixing blade can be detachably locked in the installation groove. The connecting column and the mixing blade are fixed together by connecting bolts.

[0012] By adopting the above technical solution, the mixing blade and the connecting column can be detached, making it easy for them to be separated and replaced individually for recycling, thus reducing replacement costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the double-helix mixing shaft in Embodiment 1 of this utility model.

[0014] Figure 2 This is a cross-sectional view of the structure of the double-helix mixing shaft in Embodiment 2 of this utility model.

[0015] Figure 3 This is a cross-sectional view of the inside of the mixing arm in Embodiment 2 of this utility model.

[0016] Figure 4 This is a cross-sectional view of the interior of the protective cap of Embodiment 2 of this utility model.

[0017] Explanation of reference numerals in the attached drawings: 1. Stirring shaft; 2. Stirring arm; 20. First chute; 21. Second chute; 22. Third chute; 3. Stirring blade; 4. Connecting mechanism; 40. Connecting column; 400. Mounting groove; 41. Connecting bolt; 42. Sliding block; 43. Compression spring; 44. Protective cap; 45. Sealing ring. Detailed Implementation

[0018] The following is in conjunction with the appendix Figure 1 - Appendix Figure 4 The present invention will be described in further detail below.

[0019] This utility model discloses a double-helix mixing shaft. Example

[0020] Reference Figure 1 The double-helix mixing shaft includes a mixing shaft 1. Two rows of mixing arms 2 are fixedly connected to the circumference of the mixing shaft 1 in a double helix. Each row of mixing arms 2 contains multiple mixing arms 2. The ends of the mixing arms 2 away from the mixing shaft 1 are fixedly connected to mixing blades 3.

[0021] The implementation principle of Example 1 is as follows: When the mixture is stirred, since the mixing arm 2 and the mixing blade 3 are arranged in a double helix, the mixture stirred by the first mixing blade 3 is then pushed by the second mixing blade 3, thereby generating an axial pushing force on the mixture, so that the mixture can move up and down and also move axially, thereby making the mixture more thoroughly stirred, shortening the stirring time and improving production efficiency.

[0022] In the example of mixing materials, after changing the vertically symmetrical arrangement of mixing arm 2 and mixing blade 3 to a double spiral arrangement, the mixing time for each time can be shortened by 5 seconds. Originally, the mixture could be mixed 80 times per hour, but after the double spiral arrangement, it can be mixed 90 times per hour, which significantly improves production efficiency. Example

[0023] Reference Figure 2 , Figure 3 and Figure 4 The difference between this embodiment and embodiment 1 is that the mixing blade 3 is connected to the mixing arm 2 via a connecting mechanism 4, which facilitates the individual replacement of the mixing blade 3 and improves the replacement efficiency. The connecting mechanism 4 includes a cylindrical connecting column 40, with an installation groove 400 at the top of the connecting column 40. The mixing blade 3 is detachably locked into the installation groove 400, and the connecting column 40 and the mixing blade 3 are fixed together by connecting bolts 41.

[0024] Reference Figure 3 and Figure 4 A slider 42 is fixed to the bottom peripheral wall of the connecting column 40. Correspondingly, the mixing arm 2 is hollow tubular. A first groove 20 is formed on the inner wall of the mixing arm 2 from the top to the middle. A second groove 21 is formed on the inner wall of the mixing arm 2 in the circumferential direction and is perpendicular to the first groove 20. A third groove 22 is formed on the inner wall of the mixing arm 2 from the middle to the top and is perpendicular to the second groove 21. The length of the third groove 22 is less than the length of the first groove 20.

[0025] Reference Figure 3 and Figure 4 The slider 42 is detachably and slidably connected to the first slide groove 20, the second slide groove 21, and the third slide groove 22. A compression spring 43 is installed inside the mixing arm 2. The compression spring 43 is elastically supported between the mixing shaft 1 and the connecting column 40. A protective cap 44 is fixedly fitted onto the connecting column 40. The protective cap 44 is detachably fitted onto the mixing arm 2. A sealing ring 45 is embedded in the inner wall of the protective cap 44. The sealing ring 45 is in sealing contact with the outer wall of the mixing arm 2.

[0026] The implementation principle of Example 2 is as follows: During the stirring process, the connecting column 40 is supported by the elastic force of the compression spring 43 and the centrifugal force brought by the rotation, so that the slider 42 is stably placed in the third groove 22, thereby making the mixing blade 3 in a stable working state. The protective cap 44 and the sealing ring 45 seal the connection between the connecting column 40 and the mixing arm 2 to facilitate the subsequent disassembly operation.

[0027] When it is necessary to replace the mixing blade 3, remove the entire mixing shaft from the mixing equipment, then press and screw the connecting column 40 so that the slider 42 passes through the third slide groove 22, the second slide groove 21 and the first slide groove 20 in sequence and then comes out, thereby completing the disassembly of the connecting column 40. Multiple old mixing blades 3 can be removed together with the connecting column 40 in sequence.

[0028] Then, the new mixing blade 3 and connecting column 40 are installed in reverse order. The connecting column 40 is reusable. The mixing shaft is then reinstalled into the mixing equipment to minimize downtime. After the mixing operation restarts, the old mixing blade 3 and connecting column 40 can be disassembled simultaneously, so that the mixing and disassembly operations do not interfere with each other, thereby shortening downtime and improving production efficiency.

[0029] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A double-helix mixing shaft, characterized in that: The system includes a mixing shaft (1), on which two rows of mixing arms (2) are arranged in a double spiral around the periphery. Each row of mixing arms (2) contains multiple mixing arms (2). A mixing blade (3) is provided at the end of the mixing arm (2) away from the mixing shaft (1). A connecting mechanism (4) is provided between the mixing blade (3) and the mixing arm (2). The connecting mechanism (4) includes a connecting column (40). The mixing arm (2) is tubular. A first groove (20) and a third groove (22) are axially formed on the inner wall of the mixing arm (2). One end near the middle of the mixing arm (2) is connected by the second slide groove (21). The first slide groove (20) is connected to the end face of the mixing arm (2) and its length is greater than that of the third slide groove (22). One end of the connecting column (40) is connected to the mixing blade (3). A slider (42) is fixed on the peripheral wall of the other end of the connecting column (40). The slider (42) is detachably and slidably connected in the first slide groove (20), the second slide groove (21) and the third slide groove (22). A compression spring (43) is provided in the mixing arm (2) for elastically supporting the connecting column (40).

2. The double-helix mixing shaft according to claim 1, characterized in that: A protective cap (44) is fitted and fixed on the connecting column (40). The protective cap (44) can be detachably fitted on the mixing arm (2). A sealing ring (45) is embedded on the inner wall of the protective cap (44) for sealing contact with the outer wall of the mixing arm (2).

3. The double-helix mixing shaft according to claim 1 or 2, characterized in that: The end of the connecting column (40) away from the mixing shaft (1) is provided with an installation groove (400), and the mixing blade (3) is detachably installed in the installation groove (400). The connecting column (40) and the mixing blade (3) are fixed together by connecting bolts (41).

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