Single-shaft mortar and high-viscosity fluid stirrer for axial turbulent flow pattern multi-wire cutting machine

[0032] Example 1

[0033] Such as figure 1 , figure 2 , image 3 and Figure 4 As shown, the present invention includes a mixing shaft 2 coaxially installed in the mixing tank body 1, a mixing assembly 3 that continuously rotates with the mixing shaft 2 and uniformly mixing materials in the mixing tank body 1, and a mixing shaft 2 installed on the mixing shaft 2. A driving mechanism above and driving the stirring shaft 2 to continuously rotate. The drive mechanism and the stirring shaft 2 are connected in transmission through a transmission mechanism. The stirring assembly 3 is coaxially installed at the bottom end of the stirring shaft 2. The mixing assembly 3 includes an impeller 3-1 that carries animal materials along the inner wall of the mixing tank body 1 from the bottom of the tank gradually upward or gradually downwards from the upper surface of the material, and the material makes a spiral motion while limiting the flow direction of the material to The short guide tube 3-2 that moves axially along the axis of the mixing shaft 2, the impeller 3-1 and the short guide tube 3-2 are assembled into a stirring assembly that carries the animal material in axial turbulent motion during the mixing process, The impeller 3-1 is coaxially installed at the bottom end of the stirring shaft 2, and the short guide tube 3-2 is coaxially fixed and sleeved on the outer side of the impeller 3-1. The stirring speed of the stirring shaft 2 is 600 rpm to 1500 rpm.

[0034] The number of the blades 3-12 is 2-6. In this embodiment, the number of blades 3-12 is 4, and in actual use, the number of blades 3-12 can be adjusted according to actual needs. Specifically, the number of blades 3-12 depends on the viscosity of the stirring medium (that is, the mortar ratio). The greater the viscosity of the stirring medium (that is, the mixing material), the less the number of blades 3-12, and vice versa. .

[0035] In this embodiment, during actual processing and production, the impeller 3-1 includes a coupling sleeve 3-11 coaxially fixedly installed at the bottom end of the stirring shaft 2 and a coupling sleeve 3-11 evenly arranged in the circumferential direction on the outer side wall A plurality of blades 3-12, the plurality of blades 3-12 are arranged on the same plane perpendicular to the axis of the mixing shaft 2, and the structure and size of the plurality of blades 3-12 are the same.

[0036] The connecting shaft sleeve 3-11 and the stirring shaft 2 are locked and positioned by a positioning nut 5, and the positioning nut 5 is installed on the connecting shaft sleeve 3-11 and the stirring shaft 2 from bottom to top. In the actual mixing process, positioning by the positioning nut 5 can effectively prevent the impeller 3-1 from moving in series.

[0037] The ratio between the effective length of the stirring shaft 2 extending into the stirring tank body 1 and the height of the stirring tank body 1 is 0.7 to 0.4, and the ratio between the diameter of the stirring shaft 2 and the diameter of the stirring tank body 1 is 3 ~8:100, the ratio between the diameter of the short guide tube 3-2 and the diameter of the mixing tank body 1 is 15-25:100, the wall thickness of the short guide tube 3-2 and the diameter of the mixing tank body 1 The ratio is 5-10:1000, the ratio between the thickness of the blade 3-12 and the diameter of the mixing tank body 1 is 3-15:1000, the centerline of the blade 3-12 and the axis of the mixing shaft 2 The included angle (that is, the blade installation angle) is 20°-60°, and the ratio between the vertical height of the blades 3-12 and the diameter of the mixing tank body 1 is 5-8:100. In the actual manufacturing process, the length of the stirring shaft 2, the diameter of the stirring shaft 2, the diameter of the short guide tube 3-2, the wall thickness of the short guide tube 3-2, and the blade 3-12 can be adjusted according to actual needs. The wall thickness, the blade installation angle, the stirring speed of the stirring shaft 2 and the vertical height of the blades 3-12 and the short guide tube 3-2 are adjusted accordingly.

[0038] Among them, the height of the stirring impeller 3-1 (that is, the vertical height of the blade 3-12 and the short guide tube 3-2) is adjusted according to the viscosity of the stirring medium (that is, the material to be stirred), the greater the viscosity of the stirring medium , The higher the vertical height of the blade 3-12 and the short guide tube 3-2, and vice versa. Therefore, when stirring a low-viscosity medium, the height of the impeller is low; when stirring a high-viscosity medium, the height of the impeller is high.

[0039] The diameter of the impeller 3-1 (that is, the lateral width of the blades 3-12) is not only determined by the volume of the mixing tank body 1, but also according to the different mixing medium. The larger the diameter of the mixing tank body 1, The larger the diameter of the impeller 3-1, and vice versa; the greater the viscosity of the stirring medium, the smaller the diameter of the impeller 3-1, and vice versa.

[0040] The blade installation angle is determined according to the viscosity of the stirring medium. The greater the viscosity of the stirring medium, the greater the blade installation angle, and vice versa.

[0041] The length of the stirring shaft 2 and the diameter of the stirring shaft 2 are determined by the volume of the stirring tank body 1 and the driving power of the driving mechanism. The larger the diameter of the stirring tank body 1 is, the length of the stirring shaft 2 and the stirring The larger the diameter of the shaft 2 is, and vice versa; the larger the drive power of the drive mechanism is, the larger the length of the stirring shaft 2 and the diameter of the stirring shaft 2 are.

[0042] The wall thickness of the short guide tube 3-2 and the wall thickness of the blades 3-12 are determined according to the viscosity of the stirring medium. The greater the viscosity of the stirring medium, the wall thickness of the short guide tube 3-2 and the blade 3- The wall thickness of 12 is larger, and vice versa.

[0043] The stirring speed of the stirring shaft 2 is determined according to the viscosity of the stirring medium. The greater the viscosity of the stirring medium, the lower the stirring speed of the stirring shaft 2 and vice versa.

[0044] In this embodiment, the blades 3-12 are flat-plate blades or arc-shaped blades with uniform wall thickness, and the blades 3-12 are clamped between the coupling sleeve 3-11 and the short guide tube 3-2 , The inner side wall of the blade 3-12 is fixed on the outer side wall of the coupling sleeve 3-11 and the outer side wall is fixed on the inner side wall of the short guide tube 3-2; and the lateral width of the blade 3-12 is The distance between the outer side wall of the sleeve 3-11 and the inner side wall of the short guide tube 3-2 is the same. At the same time, mixing blades with other structures can be selected according to actual needs. The vertical height of the blade 3-12 is the same as the height of the short guide tube 3-2 and the installation height of the two is the same. The ratio of the radius of curvature of the arc-shaped blades to the diameter of the mixing tank body 1 is 35-500:1000. The ratio between the wall thickness of the connecting shaft sleeve 3-11 and the diameter of the mixing tank body 1 is 5-10:1000, and the outer diameter of the connecting shaft sleeve 3-11 and the diameter of the mixing shaft 2 and the connecting shaft sleeve 3 The sum of the wall thickness of -11 is the same.

[0045] In actual installation, the connecting shaft sleeve 3-11 and the stirring shaft 2 are fixedly connected by a key connection or a threaded connection, and other fixed connection methods may also be used for fixing. The plurality of blades 3-12 are all fixedly installed in the middle of the outer side wall of the coupling sleeve 3-11, and the installation height of the plurality of blades 3-12 is the same.

[0046] In this embodiment, the driving mechanism is a driving motor 4. The plurality of blades 3-12 and the connecting shaft sleeve 3-11 are processed into one body. The plurality of blades 3-12, the connecting shaft sleeve 3-11 and the short guide tube 3-2 are all made of titanium steel material, acid-resistant steel material or engineering plastic. In actual processing, you can select the corresponding materials according to actual needs. In this embodiment, a plurality of the blades 3-12, the connecting sleeve 3-11 and the short guide tube 3-2 are all made of titanium steel, and the blades 3-12 and the connecting sleeve 3-11 and the guide The short pipes 3-2 are fixedly connected by welding.

[0047] In actual preparation, during the preparation process of the mortar in the mortar preparation tank, at a rotation speed of 600rmp~1500rmp, the flow pattern of the suspension formed by silicon carbide and cutting fluid during radial movement is turbulent, effectively accelerating Dispersion of silicon carbide.

[0048] In this embodiment, an oval-headed stirring tank with a diameter of Φ800mm and a height of 1000mm is used, the power of the drive motor is 2KW and the speed is 1500rpm, the effective length of the stirring shaft 2 is 700mm and its diameter is Φ46mm, and the short guide tube 3-2 The outer diameter of the coupling sleeve 3-11 is Φ159mm and its wall thickness is 4mm, the outer diameter of the coupling sleeve 3-11 is Φ50mm and its height is 50mm, the wall thickness of the coupling sleeve 3-11 is 4mm, the blade installation angle is 45° and the blade 3- 12 is a straight blade, the vertical height of the blade 3-12 is 50mm and its thickness is 4mm, and the connecting shaft sleeve 3-11 and the stirring shaft 2 are connected by thread. In actual use, after putting in 400 liters of cutting fluid at a time, put in 400 kg of silicon carbide at a time, cover the upper cover of the agitator and turn on the agitator, and put it into the mortar tank of the multi-wire cutting machine after one hour to realize the multi-wire cutting process, wait After the cutting is completed, the cleaning and testing process of the silicon wafer is completed, and the pass rate of the wafer after testing is 98.5%.

[0049] Example 2

[0050] In this embodiment, the difference from embodiment 1 is: an oval-headed stirring tank with a diameter of Φ1000mm and a height of 1200mm is used, the power of the driving motor is 4KW and the rotation speed is 1500rpm, the effective length of the stirring shaft 2 is 840mm and its diameter is Φ50mm, the outer diameter of the short guide tube 3-2 is Φ180mm and its wall thickness is 5mm, the outer diameter of the coupling sleeve 3-11 is Φ55mm and its height is 50mm, the wall thickness of the coupling sleeve 3-11 is 5mm, the blade The installation angle is 45°, the vertical height of the blade 3-12 is 50mm and its thickness is 3mm, and the connecting shaft sleeve 3-11 and the stirring shaft 2 are connected in a threaded manner. In actual use, the blades 3-12 can also adopt arc-shaped blades with a radius of curvature of 500 mm. In actual use, after putting in 800 liters of cutting fluid at a time, then put in 800 kg of silicon carbide at a time, cover the upper cover of the stirrer, turn on the stirrer, and put it into the mortar tank of the multi-wire cutting machine one hour later to realize the multi-wire cutting process. After the cutting is completed, the cleaning and testing process of the silicon wafer is completed, and the pass rate of the wafer after testing is 98.5%. In actual use, according to the viscosity of the stirring medium, the stirring speed of the stirring shaft 2 is adjusted accordingly in the range of 600 rpm to 1500 rpm. In this embodiment, the structure, connection relationship and working principle of the remaining parts are the same as those in the first embodiment.

[0051] Example 3

[0052] In this embodiment, the difference from embodiment 2 is: the effective length of the stirring shaft 2 is 480mm and its diameter is Φ30mm, the radius of the short draft tube 3-2 is Φ150mm and its wall thickness is 5mm, and the shaft sleeve 3-11 The outer diameter is Φ35mm and its height is 50mm, the wall thickness of the coupling sleeve 3-11 is 5mm, the blade installation angle is 20°, the vertical height of the blade 3-12 is 50mm and its thickness is 5mm, and the coupling sleeve 3 -11 and the stirring shaft 2 are connected by key. In actual use, the blades 3-12 can also be arc-shaped blades with a radius of curvature of 35mm. The stirring speed of the stirring shaft 2 is 600 rpm. In this embodiment, the structure, connection relationship and working principle of the remaining parts are the same as those in the second embodiment.