Wet grinding machine

Abstract

A wet mill comprises a machine base, a charging barrel fixed to the machine base and a stirrer, the stirrer comprises a stirrer shaft extending outwards in the axial direction of an inner cavity of the charging barrel, and the wet mill is characterized by further comprising a motor vertically arranged over or under the charging barrel, and a coupler for connecting a rotating shaft of the motor with the stirrer shaft in a coupling mode; a rotating shaft of the motor and the stirrer shaft are coaxially arranged, a shell of the motor comprises an annular inner shell part and an annular outer shell part located on the radial outer side of the outer shell part, and the radial space of the inner shell part and the radial space of the outer shell part form a cooling flow channel. According to the wet mill disclosed by the utility model, the optimally designed motor is vertically arranged right above or right below the charging barrel, so that assembly parts required by the whole wet mill and the radial occupied area are relatively small, and the working efficiency of the wet mill and the arrangement of a production line are convenient to improve.

Description

Technical Field

[0001] This utility model relates to a wet grinding mill, whose IPC classification number is B02C17 / 16. Background Technology

[0002] Existing wet grinding mills such as Figure 1 As shown, the assembly includes a bracket 10', a motor 20' and a material cylinder 30' mounted on the bracket, a stirring shaft 40' extending outward from the inner cavity of the material cylinder 30', a drive wheel 50' connected to the rotating shaft of the motor 20', a driven wheel 60', a transmission shaft 70' connecting the driven wheel 60' to the stirring shaft 40', and a belt 80' connecting the drive wheel 50' and the driven wheel 60'. When the wet grinding mill is working, the motor 20' drives the drive wheel 50' to rotate, and then transmits power to the driven wheel 60' via the belt 80'. The driven wheel 60' then transmits power to the stirring shaft 40' via the transmission shaft 70', thus achieving power transmission. Existing wet grinding mills require the cooperation of multiple parts to transmit power to the workpiece, resulting in low power transmission efficiency and requiring a large assembly space; therefore, there is a need for improvement. Utility Model Content

[0003] To solve the above problems, this utility model provides the following technical solution:

[0004] A wet grinding mill includes a base, a barrel fixed to the base, and an agitator. The agitator includes an agitator shaft extending axially outward from the inner cavity of the barrel. The mill is characterized by further including a motor erected directly above or below the barrel, a coupling connecting the motor shaft to the agitator shaft, the motor shaft and the agitator shaft being coaxially aligned, and the motor housing including an annular inner housing and an annular outer housing located radially outside the inner housing, with the radial space between the inner housing and the outer housing forming a cooling channel.

[0005] The wet grinding mill of this invention has an optimized motor that is erected directly above or below the material cylinder. This reduces the number of assembly parts required and the radial footprint, making it easier to improve the working efficiency of the wet grinding mill and the layout of the production line.

[0006] Furthermore, the agitator shaft includes a first agitator shaft portion connected to a coupling and a second agitator shaft portion connected to the agitator's workpiece. The outer diameter of the first agitator shaft portion is equal to the outer diameter of the motor's rotating shaft and smaller than the outer diameter of the second agitator shaft portion.

[0007] Furthermore, the axial length of the agitator shaft inside the barrel is L1, and the sum of the axial length L2 of the shaft near the coupling side and exposed outside the motor housing and the axial length L3 of the agitator shaft extending outside the barrel is L4, which satisfies L4 = (0.3~0.4)L1.

[0008] Furthermore, the wet grinding mill also includes a mounting bracket fixed to the machine base and for fixed assembly with the motor. The mounting bracket includes a first mounting bracket with one end connected to the machine base and the other end connected to the motor, and a limiting mechanism fixed to one axial end of the first mounting bracket to constrain the displacement of the non-output end of the motor.

[0009] Furthermore, the first mounting bracket includes a mounting plate, a support portion, a side connecting portion that fixes the mounting plate to the support portion, and a first diagonal brace located radially within the side connecting portion and providing support for the mounting plate and the support portion.

[0010] Furthermore, the limiting mechanism is a second mounting bracket, which includes a second bracket base, a second bracket mounting plate erected on the second bracket base, a first support part disposed on one radial side of the second bracket mounting plate and fixing the second bracket base and the second bracket mounting plate together, and a second support part disposed on the other radial side of the second bracket mounting plate and fixing the second bracket base and the second bracket mounting plate together. The motor is fixedly connected to the second bracket mounting plate.

[0011] Furthermore, the second bracket also includes a second inclined brace located between the first support and the second support, with one end of the second inclined brace connected to the base of the second bracket and the other end connected to the mounting plate of the second bracket.

[0012] Furthermore, the limiting mechanism includes a third mounting bracket fixedly connected to the first mounting bracket and a fourth mounting bracket disposed at the non-output shaft end of the motor and connected to the third bracket, with the motor fixedly mounted on the fourth mounting bracket.

[0013] Furthermore, the fourth bracket includes a plate-shaped fourth bracket body and a connecting arm extending from the fourth bracket body, the connecting arm being fixedly connected to the third mounting bracket.

[0014] Furthermore, the third mounting bracket includes a third bracket base fixedly connected to the first mounting bracket, and a third bracket mounting part located at the non-output shaft end of the motor and parallel to the third bracket base. The third bracket base has a through hole through which the motor shaft passes. The third bracket mounting part is located at the axial upper end of the through hole and is a quadrilateral frame. At its inner corner, there is a mounting bridge that filters and connects the accessories of adjacent third bracket mounting parts. Several vertically arranged first support columns are connected between the third bracket base and the third bracket mounting part.

[0015] Furthermore, the third mounting bracket also includes a third inclined brace, one end of which is fixedly connected to the first support column and / or the third bracket mounting part, and the other end of which is fixedly connected to the third bracket base. In the radial projection view of the third mounting bracket, adjacent third inclined braces are arranged in a "V" shape. Attached Figure Description

[0016] Figure 1This is a schematic diagram of an existing wet grinding mill;

[0017] Figure 2 This is a three-dimensional structural diagram of the wet grinding mill of this utility model;

[0018] Figure 3 yes Figure 2 A magnified view of part A in the diagram;

[0019] Figure 4 This is a three-dimensional structural diagram of the motor of this utility model;

[0020] Figure 5 This is a three-dimensional structural schematic diagram of the first embodiment of the wet grinding mill of this utility model;

[0021] Figure 6 This is a three-dimensional structural diagram of the first mounting bracket of this utility model;

[0022] Figure 7 This is a three-dimensional structural diagram of the first mounting bracket of this utility model from another angle;

[0023] Figure 8 This is a three-dimensional structural diagram of the second mounting bracket of this utility model;

[0024] Figure 9 This is a three-dimensional structural diagram of the second mounting bracket of this utility model from another angle;

[0025] Figure 10 This is a three-dimensional structural schematic diagram of the second embodiment of the wet grinding mill of the utility model;

[0026] Figure 11 This is a three-dimensional structural diagram of the third mounting bracket of this utility model;

[0027] Figure 12 This is a three-dimensional structural diagram of the fourth mounting bracket of this utility model;

[0028] Wherein: 10´-support frame, 20´-motor, 30´-material cylinder, 40´-stirring shaft, 50´-drive wheel, 60´-driven wheel, 70´-drive shaft, 80´-belt

[0029] 60-Mounting bracket, 60'-Mounting bracket, 61-First mounting bracket, 62-Second mounting bracket, 63-Third mounting bracket, 64-Fourth mounting bracket, 65-Through hole, 100-Base, 200-Barrel, 300-Agitator, 310-Agitator shaft, 311-First agitator shaft section, 312-Second agitator shaft section, 320-Grinding disc, 400-Motor, 410-Rotating shaft, 420-Outer shell, 421-Inner shell section, 422-Outer shell section, 423-Cooling channel, 4 30-Stator, 500-Coupling, 611-Mounting plate, 612-Support part, 613-Connecting part, 614-First diagonal brace part, 621-Second bracket base, 622-Second bracket mounting plate, 623-First support part, 624-Second support part, 625-Second diagonal brace part, 631-Third bracket base, 632-First support column, 633-Third bracket mounting part, 634-Mounting bridge, 635-Third diagonal brace part, 641-Fourth bracket body, 642-Connecting arm Detailed Implementation

[0030] This utility model discloses a wet grinding mill, see Figures 2 to 4 The wet grinding mill includes a base 100, a barrel 200 fixed on the base 100, an agitator 300 rotatably mounted on the barrel 200, a motor 400, and a coupling 500. The agitator 300 includes an agitator shaft 310 partially housed within the inner cavity of the barrel 200 and a workpiece fixed to the agitator shaft 310. The motor 400 includes a rotor (not shown), a housing 420, a stator 430 fixedly mounted on the housing 420, and a cooling channel 423 circumferentially surrounding the stator 430. The rotor includes a rotating shaft 410 extending axially from the housing 420. In this invention, the motor 400 is erected directly above the barrel 200 (i.e., the motor's axis is perpendicular or nearly perpendicular to the horizontal plane and located above the barrel). The coupling 500 couples the motor's rotating shaft 410 to the agitator shaft 310. Furthermore, to further reduce the space occupied by the wet mill, the rotating shaft 410 of the motor 400 and the agitator shaft 310 are arranged coaxially. Of course, as another embodiment, the motor 400 is erected directly below the material cylinder 200, and the rotating shaft 410 and the agitator shaft 310 are coupled and connected by a coupling 500, which can also achieve the effect of this utility model.

[0031] The wet grinding mill of this invention has an optimized motor that is erected directly above or below the material cylinder. This reduces the number of assembly parts required and the radial footprint, making it easier to improve the working efficiency of the wet grinding mill and the layout of the production line.

[0032] See Figure 2 and Figure 3Preferably, the stirring workpiece of this invention is a grinding disc 320, and the stirrer shaft 310 includes a first stirring shaft portion 311 connected to the coupling 500 and a second stirring shaft portion 312 connected to the grinding disc 320. Further, to ensure sufficient strength of the stirrer shaft while facilitating assembly, the outer diameter D1 of the first stirring shaft portion 311 is equal to the outer diameter D2 of the motor shaft 420, and the outer diameter D1 of the first stirring shaft portion 311 is smaller than the outer diameter D3 of the second stirring shaft portion 312.

[0033] Preferably, see Figure 2 The axial length of the agitator shaft 310 located inside the material cylinder 200 is L1, the axial length of the rotating shaft 410 near the coupling 500 and exposed outside the motor housing 420 is L2, the axial length of the agitator shaft 310 extending outside the material cylinder 200 is L3, and L4 is the sum of L2 and L3. Experiments have shown that when L4 = (0.3~0.4) * L1, the agitator has small oscillations, which helps to reduce motor vibration and improve the working life of the wet mill.

[0034] Preferably, see Figure 4 The motor 400 of this invention includes an annular inner shell portion 421 and an annular outer shell portion 422 located radially outside the inner shell portion 421. The cooling channel 423 is a channel formed by the radial space between the inner shell portion 421 and the outer shell portion 422 for the flow of coolant. The design of the cooling channel allows the heat from the stator to be efficiently transferred to the coolant within the channel for heat dissipation, preventing magnetic attenuation during motor operation from affecting the working efficiency of the wet grinding mill.

[0035] See Figure 5 The wet grinding mill of this utility model also includes a mounting bracket 60 fixed to the machine base 100 and fixedly assembled with the motor 400. The mounting bracket 60 includes a first mounting bracket 61 and a limiting mechanism fixed to one axial end of the first mounting bracket 61 and constraining the displacement of the non-output end of the motor.

[0036] Preferably, see Figure 6 and Figure 7The first mounting bracket 61 in this embodiment includes a mounting plate 611 axially fixedly connected to the motor 400, a support portion 612 fixedly connected to the base 100, a first diagonal brace 614, and a side connecting portion 613 fixedly connecting the mounting plate 611 and the support portion 612. In a preferred embodiment, the side connecting portion 613 is a plate-shaped side plate; however, in other embodiments, the side connecting portion 613 can be a columnar body or several separated connecting reinforcing ribs. The mounting plate 611 has a through hole through which the motor shaft passes. The first diagonal brace 614 is located between the radially outer side of the through hole and the radially inner side of the support portion 612. One end of the first diagonal brace 614 is directly or through a transition part fixedly connected to the support portion 612, and the other end is directly or through a transition part fixedly connected to the mounting plate 611. The first mounting bracket of this utility model has a simple structure, strong load-bearing capacity, and facilitates production and processing while ensuring connection strength.

[0037] Example 1:

[0038] See Figure 5 , 8 and Figure 9 In this embodiment, the limiting mechanism is a second bracket 62. Further, the second bracket 62 includes a second bracket base 621, a second bracket mounting plate 622 erected on the second bracket base 621, a first support portion 623 disposed on one side of the second bracket mounting plate 622 and fixingly connecting the second bracket base 621 and the second bracket mounting plate 622, and a second support portion 624 disposed on the other radial side of the second bracket mounting plate 622 and fixingly connecting the second bracket base 621 and the second bracket mounting plate 622. The motor 400 is axially fixed to the mounting plate 611 via a flange (not shown), and radially fixedly mounted on the second bracket mounting plate 622. Through the above design, the motor connection is stable and reliable, the operation is stable, and the vibration and noise of the equipment operation are reduced.

[0039] Furthermore, to enhance the connection strength of the second bracket 62, the second bracket 62 also includes a second inclined brace 625 located between the first support portion 623 and the second support portion 624. One end of the second inclined brace 625 is connected to the second bracket base 621, and the other end is connected to the second bracket mounting plate 622.

[0040] Example 2:

[0041] See Figures 10 to 12This utility model also discloses another embodiment of a wet grinding mill. The difference between this embodiment and embodiment 1 is that the structure of the limiting mechanism is different, but the structure of other parts or components is the same as that of embodiment 1. The limiting mechanism in this embodiment includes a third mounting bracket 63 fixedly connected to the first mounting bracket 61 and a fourth mounting bracket 64 disposed at the non-output shaft end of the motor 400 and connected to the third mounting bracket 63. The motor 400 is fixedly mounted on the fourth mounting bracket 64.

[0042] See Figure 10 and Figure 11 In this embodiment, the third mounting bracket 63 includes a third bracket base 631 fixedly connected to the first mounting bracket 61, and a third bracket mounting portion 633 located at the non-output shaft end of the motor 400 and parallel to the third bracket base 631. The second mounting portion 631 in this embodiment has a through hole 65 through which the motor shaft passes. The third bracket mounting portion 633 is located at the axial upper end of this through hole and is a quadrilateral frame. At its inner corner, a mounting bridge 634 is provided to filter and connect the accessories of adjacent third bracket mounting portions 633. Several vertically arranged first support columns 632 connect the third bracket base 631 and the third bracket mounting portion 633. This design facilitates airflow through the third mounting bracket 63 to dissipate heat from the motor 400, reducing the risk of the motor 400 overheating and burning out. Furthermore, to enhance the strength of the third mounting bracket 63, the third mounting bracket 63 further includes a third inclined brace 635, one end of which is fixedly connected to the first support column 632, or the third bracket mounting part 633, or both the first support column 632 and the third bracket mounting part 633, and the other end of which is fixedly connected to the third bracket base 631. In the radial projection view of the third mounting bracket 63, adjacent third inclined braces 635 are arranged in a "V" shape.

[0043] Preferably, see Figure 12 In this embodiment, the fourth bracket 64 includes a plate-shaped fourth bracket body 641 and a connecting arm 642 extending from the fourth bracket body. During assembly, the non-output shaft end of the motor 400 is fixedly connected to the fourth bracket 64, and the fourth bracket 64 is fixed to the third bracket 63 via the connecting arm 642. In this embodiment of the wet grinding mill, the other end of the motor that is not connected to the agitator shaft is fixed by the fourth bracket 64. Through the above design, the motor connection is stable and reliable, the operation is stable, vibration and noise during equipment operation are reduced, and the positioning and installation of the motor 400 are facilitated.

[0044] This utility model is not limited to the above-described embodiments. If any modifications or variations to this utility model do not depart from the spirit and scope of this utility model, and if such modifications and variations fall within the scope of the claims and equivalent technologies of this utility model, then this utility model also intends to include such modifications and variations.

Claims

1. A wet mill comprising a frame (100), a bowl (200) fixed to the frame (100), an agitator (300) comprising an agitator shaft (310) extending axially outwards from an inner cavity of the bowl (200), characterized in that: The motor (400) is arranged vertically above or below the barrel (200), a shaft coupling (500) is arranged between the rotating shaft (410) of the motor (400) and the stirrer shaft (310), the rotating shaft (410) of the motor (400) is coaxial with the stirrer shaft (310), the shell (420) of the motor (400) comprises an annular inner shell part (421) and an annular outer shell part (422) arranged radially outside the inner shell part (421), and a radial space between the inner shell part (421) and the outer shell part (422) forms a cooling flow channel (423).

2. The wet mill of claim 1, wherein: The stirrer shaft (310) comprises a first stirring shaft part (311) connected with the shaft coupling (500) and a second stirring shaft part (312) connected with the stirring workpiece of the stirrer (300), the outer diameter of the first stirring shaft part (311) is equal to the outer diameter of the rotating shaft (410) of the motor (400) and smaller than the outer diameter of the second stirring shaft part (312).

3. A wet mill according to claim 1 or 2, characterized in that: The axial length of the stirrer shaft (310) in the barrel (200) is L1, the axial length L2 of the rotating shaft (410) close to the shaft coupling (500) and exposed to the shell (420) of the motor (400) is equal to the axial length L3 of the stirrer shaft (310) extending out of the barrel (200), and the sum of L2 and L3 is L4, which satisfies L4=(0.3-0.4)*L1.

4. The wet mill of claim 1, wherein: The mounting bracket (60, 60') is fixed to the machine base (100) and used for fixing the motor (400), the mounting bracket (60, 60') comprises a first mounting bracket (61) connected with the machine base (100) at one end and connected with the motor (400) at the other end, and a limiting mechanism fixed to an axial end of the first mounting bracket (61) and used for limiting displacement of a non-output end of the motor.

5. The wet mill of claim 4, wherein: The first mounting bracket (61) comprises a mounting plate (611), a support part (612), a side connecting part (613) fixedly connecting the mounting plate (611) and the support part (612), and a first inclined cable part (614) arranged radially inside the side connecting part (613) and used for supporting the mounting plate (611) and the support part (612).

6. A wet mill according to claim 4 or 5, characterized in that: The limiting mechanism is a second mounting bracket (62), which comprises a second bracket base (621), a second bracket mounting plate (622) arranged vertically on the second bracket base (621), a first support part (623) arranged radially on one side of the second bracket mounting plate (622) and fixedly connecting the second bracket base (621) and the second bracket mounting plate (622), and a second support part (624) arranged radially on the other side of the second bracket mounting plate (622) and fixedly connecting the second bracket base (621) and the second bracket mounting plate (622), and the motor (400) is fixedly connected with the second bracket mounting plate (622).

7. The wet mill of claim 6, wherein: The second mounting bracket (62) further comprises a second inclined cable part (625) arranged between the first support part (623) and the second support part (624), one end of the second inclined cable part (625) is connected with the second bracket base (621), and the other end is connected with the second bracket mounting plate (622).

8. A wet mill according to claim 4 or 5, characterized in that: The limiting mechanism comprises a third mounting bracket (63) fixedly connected with the first mounting bracket (61) and a fourth mounting bracket (64) arranged at a non-output shaft end of the motor (400) and connected with the third mounting bracket (63), and the motor (400) is fixedly mounted on the fourth mounting bracket (64).

9. The wet mill of claim 8, wherein: The fourth mounting bracket (64) comprises a plate-shaped fourth bracket body (641) and a connecting arm (642) extending from the fourth bracket body, and the connecting arm (642) is fixedly connected with the third mounting bracket (63).

10. The wet mill of claim 8, wherein: The third mounting bracket (63) comprises a third bracket base (631) fixedly connected with the first mounting bracket (61), and a third bracket mounting portion (633) parallel to the third bracket base (631) at the non-output shaft end of the motor (400), the third bracket base (631) is provided with a through hole (65) for the rotating shaft of the motor (400) to pass through, the third bracket mounting portion (633) is located at the axial upper end of the through hole (65) and is a quadrilateral frame, and a mounting bridge (634) for filtering and connecting accessories of adjacent third bracket mounting portions (633) is arranged at the inner side corner of the third bracket mounting portion (633), and a plurality of first support columns (632) are arranged vertically between the third bracket base (631) and the third bracket mounting portion (633).

11. The wet mill of claim 10, wherein: The third mounting bracket (63) further comprises a third inclined pull portion (635) having one end fixedly connected with the first support column (632) and / or the third bracket mounting portion (633) and the other end fixedly connected with the third bracket base (631), and in the radial projection view of the third mounting bracket (63), adjacent third inclined pull portions (635) are arranged in a "V" shape.

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