A baffle device for a colloid mill

Abstract

This utility model discloses a baffle device for a colloid mill, relating to the grinding field. It includes a circular shell and a grinding rotor. The circular shell is fixedly installed at the bottom of the grinding rotor. A lifting assembly is fixedly connected inside the circular shell. Several baffles arranged radially along the grinding rotor are fixedly connected to the lifting end of the lifting assembly. The baffles pass through the top of the circular shell, and guide strips are rotatably connected to the baffles. The advantages are: the lifting assembly allows for convenient adjustment of the effective height of the baffles above the top of the circular shell, thereby changing the resistance encountered by the material during flow and extending the material residence time. Simultaneously, as the lifting assembly moves the baffles up and down, a linkage assembly synchronously drives the guide strips to rotate, thereby changing the angle between the guide strips and the radial direction of the circular shell, forming a synchronous adjustment mechanism. Without separate operation of the guide strips, the guide angle can be matched in real time according to the baffle height, ensuring that the material is always in the optimal flow field state.

Description

Technical Field

[0001] This utility model relates to the field of grinding technology, specifically to a baffle device for a colloid mill. Background Technology

[0002] Colloid mills rely on the high-speed relative motion between the grinding rotor and the stator to refine materials. The baffle device is a key component for regulating material flow and optimizing grinding effect.

[0003] Existing baffle devices are mostly fixed structures or require disassembly and replacement, and their height cannot be adjusted according to the material viscosity and grinding requirements, which leads to the easy accumulation of high-viscosity materials.

[0004] Although some colloid mills are equipped with adjustable guide components (such as baffles and deflectors), adjusting the angle of these guide components requires separate operation (such as manually tightening bolts or using an additional drive motor), and cannot be performed simultaneously with the baffle height adjustment. Operators must first adjust the baffle height and then adjust the guide component angle separately, which is not only cumbersome but also time-consuming. Utility Model Content

[0005] The purpose of this invention is to provide a baffle device for a colloid mill in order to solve the above-mentioned problems, as detailed below.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] The present invention provides a baffle device for a colloid mill, comprising a circular shell and a grinding rotor. The circular shell is fixedly installed at the bottom of the grinding rotor. A lifting assembly is fixedly connected inside the circular shell. Several baffles arranged radially along the grinding rotor are fixedly connected to the lifting end of the lifting assembly. The baffles pass through the top of the circular shell. A guide strip is rotatably connected to the baffle. When the upper side of the baffle is flush with the top of the circular shell, the guide strip corresponds completely to the upper side of the baffle.

[0008] The circular housing is equipped with a linkage component to cooperate with the lifting component, so that the guide bar can be rotated while the baffle is being raised or lowered.

[0009] The baffle device of the colloid mill described above can be used to move the baffle by lifting components, adjusting the part of the baffle above the top of the circular shell, thereby changing the resistance to the fluid. In addition, during the process of moving the baffle, the lifting components can cooperate with the linkage components to rotate the guide bar. By adjusting the radial angle range between the guide bar and the circular shell, the degree of material obstruction can be changed accordingly.

[0010] Preferably, the lifting assembly includes a fixed ring, on which several baffles are fixedly connected, and several openings are provided on the fixed ring. A screw passing through the openings is vertically fixedly connected to the top of the inner wall of the circular housing, and two nuts are threadedly connected to the screw, with the two nuts distributed at the top and bottom of the fixed ring.

[0011] Preferably, a guide rod is vertically slidably connected to the fixing ring, and the guide rod is fixedly connected to the top of the inner wall of the circular shell. Guide plates for guiding the baffle are provided on both sides of the baffle, and the guide plates are fixedly connected inside the circular shell.

[0012] Preferably, the circular shell has several mounting grooves, and the baffle is fitted with the inner wall of the mounting groove with a clearance fit.

[0013] Preferably, a sealing cap is fixedly installed at the bottom of the circular housing.

[0014] Preferably, the circular shell and the sealing cover are provided with through holes at corresponding positions, and a sleeve is fixedly connected between the two through holes.

[0015] Preferably, a rotating shaft is vertically rotatably connected to the baffle, and a guide bar is fixedly connected to the rotating shaft, with the bottom of the guide bar contacting the top of the baffle.

[0016] Preferably, the linkage assembly includes several L-shaped rods fixedly connected to the top of the circular housing, and the rotating shaft surface is provided with an inclined guide groove, with the L-shaped rods inserted into the guide groove.

[0017] Preferably, the L-shaped rod is clearance-fitted with the inner wall of the guide groove.

[0018] Preferably, the circular housing is coaxial with the grinding rotor.

[0019] The beneficial effects are:

[0020] 1. The effective height of the baffle above the top of the circular shell can be easily adjusted by the lifting component, thereby changing the resistance encountered by the material during the flow process and extending the material residence time. At the same time, as the lifting component drives the baffle to rise and fall, the linkage component can synchronously drive the guide bar to rotate, thereby changing the radial angle between the guide bar and the circular shell, forming a synchronous adjustment mechanism. Without the need to operate the guide bar separately, the guide angle can be matched in real time according to the baffle height, ensuring that the material is always in the optimal flow field state.

[0021] 2. By adjusting the height of the baffle and the angle of the guide bar, it can adapt to the processing needs of materials with different viscosities and particle sizes. By raising the height of the baffle and adjusting the guide bar to a reverse angle, the blocking effect on particles can be enhanced, and the crushing rate can be increased. When processing light materials, the height of the baffle can be lowered and the guide bar can be adjusted to a positive angle to avoid material splashing and improve grinding efficiency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a front view structural diagram of the present invention;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the circular shell of this utility model;

[0026] Figure 4 This is a three-dimensional structural diagram of the mounting groove of this utility model;

[0027] Figure 5 This is a three-dimensional structural diagram of the lifting component of this utility model;

[0028] Figure 6 This is a schematic diagram of the three-dimensional structure of the baffle of this utility model.

[0029] The annotations in the attached figures are explained as follows:

[0030] 1. Circular shell; 2. Grinding rotor; 3. Sealing cover; 4. Baffle; 5. Mounting groove; 6. Through hole; 7. Lifting assembly; 8. Fixing ring; 9. Guide rod; 10. Screw; 11. Nut; 12. Guide plate; 13. Rotating shaft; 14. Guide bar; 15. Linkage assembly; 16. L-shaped rod; 17. Guide groove. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] See Figures 1-6 As shown, this utility model provides a baffle device for a colloid mill, including a circular shell 1 and a grinding rotor 2. The circular shell 1 is fixedly installed at the bottom of the grinding rotor 2. A lifting assembly 7 is fixedly connected inside the circular shell 1. Several baffles 4 are fixedly connected to the lifting end of the lifting assembly 7 and arranged radially along the grinding rotor 2. The baffles 4 pass through the top of the circular shell 1. A guide bar 14 is rotatably connected to the baffles 4. When the upper side of the baffles 4 is flush with the top of the circular shell 1, the guide bar 14 is completely corresponding to the upper side of the baffles 4.

[0033] The circular housing 1 is equipped with a linkage component 15 to cooperate with the lifting component 7, so that the guide bar 14 can be rotated while the lifting baffle 4 is being raised.

[0034] The material enters from the top of the grinding chamber and flows towards the chamber wall under the centrifugal force generated by the high-speed rotation of the grinding rotor 2.

[0035] The baffle guides the flow: the raised baffle 4 prevents the material from flowing directly to the bottom of the grinding chamber, prolonging the residence time of the material in the grinding area. At the same time, the inclined angle of the guide bar 14 guides the material to flow along the preset path. The positive angle guides the material to quickly enter the grinding gap, while the negative angle slows down the material flow and enhances the particle crushing effect.

[0036] The length is the same as the width of baffle 4, the width is 10-15mm, the thickness is 3-5mm, and the bottom surface that contacts the top of baffle 4 must be smooth.

[0037] Circular shell 1

[0038] Dimensions: The inner diameter is adapted to the diameter of grinding rotor 2, and is usually 10-20mm larger than the diameter of grinding rotor 2 to ensure that the rotor rotates without interference. The height is 80-150mm, which is designed according to the overall height of the grinding chamber. The wall thickness is 5-8mm to ensure structural strength.

[0039] Material: Made of 316L stainless steel for food / pharmaceutical applications or polytetrafluoroethylene for highly corrosive chemical applications. The inner wall is finely ground to a surface roughness Ra≤0.8μm to avoid material residue.

[0040] Connection to grinding rotor 2: It is fixed to the bottom end face of grinding rotor 2 by 4-6 evenly distributed hexagonal socket head cap bolts with M8-M12 specifications. A nitrile rubber sealing gasket with a thickness of 2-3mm is set at the connection between the bolt and the housing and rotor to prevent material leakage from the connection gap.

[0041] As an optional implementation, the lifting assembly 7 includes a fixed ring 8, on which several baffles 4 are fixedly connected. Several openings are provided on the fixed ring 8. A screw 10 passing through the opening is vertically fixedly connected to the top of the inner wall of the circular housing 1. Two nuts 11 are threadedly connected to the screw 10, and the two nuts 11 are distributed at the top and bottom of the fixed ring 8.

[0042] The operator uses a wrench to turn the nut 11 at the bottom of the screw 10 clockwise. The nut 11 pushes the fixing ring 8 upward along the guide rod 9 and rises vertically. The fixing ring 8 drives the baffle 4 to move upward along the mounting groove 5 and the guide plate 12. At the same time, the rotating shaft 13 rises synchronously with the baffle 4. The L-shaped rod 16 slides relative to each other in the inclined guide groove 17, forcing the rotating shaft 13 to rotate around its own axis. This causes the guide bar 14 to tilt in the direction of rotation of the grinding rotor 2 to form a positive included angle. The tilt angle increases as the baffle rises, up to a maximum of 30°.

[0043] Baffle lowering adjustment: Rotate the nut 11 at the top of the screw 10 counterclockwise. The nut 11 pulls the fixing ring 8 down and the baffle 4 descends synchronously with the fixing ring 8. When the rotating shaft 13 descends with the baffle, the L-shaped rod 16 slides in the opposite direction along the guide groove 17, causing the guide bar 14 to tilt in the opposite direction of the rotor rotation to form a reverse angle until the baffle returns to its initial position and the guide bar returns to the state of alignment with the baffle.

[0044] Positioning and fixing: After the baffle 4 is adjusted to the target height, tighten the nuts 11 on the upper and lower sides of the screw 10 simultaneously. The height of the baffle is fixed by the clamping action of the nuts on the fixing ring 8, so as to avoid the position shift caused by material impact during operation.

[0045] A guide rod 9 is vertically slidably connected to the fixed ring 8. The guide rod 9 is fixedly connected to the top of the inner wall of the circular shell 1. Guide plates 12 are provided on both sides of the baffle 4 for guiding the baffle 4. The guide plates 12 are fixedly connected inside the circular shell 1.

[0046] The circular shell 1 has several mounting slots 5, and the baffle 4 is fitted with the inner wall of the mounting slot 5 with a clearance fit.

[0047] A sealing cover 3 is fixedly installed at the bottom of the circular housing 1. The sealing cover 3 cooperates with the sleeve to prevent material from leaking from the bottom of the circular housing 1. The gap between the mounting groove 5 and the baffle 4 and the limit of the guide plate 12 prevent material from seeping into the housing and contaminating the lifting component 7.

[0048] The circular housing 1 and the sealing cover 3 are provided with through holes 6 at corresponding positions. A sleeve is fixedly connected between the two through holes 6. The through holes 6 and the sleeve are provided to adapt to the output shaft of the motor.

[0049] A rotating shaft 13 is vertically rotatably connected to the baffle 4, and a guide bar 14 is fixedly connected to the rotating shaft 13. The bottom of the guide bar 14 contacts the top of the baffle 4.

[0050] The linkage assembly 15 includes several L-shaped rods 16 fixedly connected to the top of the circular housing 1. An inclined guide groove 17 is provided on the surface of the rotating shaft 13, and the L-shaped rods 16 are inserted into the guide groove 17.

[0051] The L-shaped rod 16 is clearance-fitted with the inner wall of the guide groove 17. The guide groove 17 is formed on the surface of the rotating shaft 13. The groove width is 0.2-0.3mm larger than the diameter of the L-shaped rod 16, the groove depth is 2-3mm, and the inclination angle is 30°-45° to ensure that the guide bar can be driven to rotate 15°-30° when the baffle is raised or lowered. The groove opening is rounded with a radius of 0.5-1mm to avoid jamming.

[0052] The circular housing 1 is coaxial with the grinding rotor 2.

[0053] With the above structure, the baffle 4 is moved by the lifting component 7, and the part of the baffle 4 that is higher than the top of the circular shell 1 is adjusted, thereby changing the resistance to the fluid. In the process of moving the baffle 4, the lifting component 7 cooperates with the linkage component 15 to rotate the guide bar 14. By adjusting the radial angle range between the guide bar 14 and the circular shell 1, the degree of obstruction of the material can be changed accordingly.

[0054] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A baffle device for a colloid mill, characterized in that: The device includes a circular housing (1) and a grinding rotor (2). The circular housing (1) is fixedly installed at the bottom of the grinding rotor (2). A lifting assembly (7) is fixedly connected inside the circular housing (1). Several baffles (4) arranged radially along the grinding rotor (2) are fixedly connected to the lifting end of the lifting assembly (7). The baffles (4) pass through the top of the circular housing (1). A guide strip (14) is rotatably connected to the baffles (4). When the upper side of the baffles (4) is flush with the top of the circular housing (1), the guide strip (14) is completely aligned with the upper side of the baffles (4). The circular housing (1) is equipped with a linkage component (15) to cooperate with the lifting component (7) to realize the simultaneous rotation of the guide bar (14) while lifting the baffle (4).

2. The baffle device for a colloid mill according to claim 1, characterized in that: The lifting assembly (7) includes a fixed ring (8), on which several baffles (4) are fixedly connected. Several openings are provided on the fixed ring (8). A screw (10) passing through the opening is vertically fixedly connected to the top of the inner wall of the circular shell (1). Two nuts (11) are threadedly connected to the screw (10). The two nuts (11) are distributed at the top and bottom of the fixed ring (8).

3. The baffle device for a colloid mill according to claim 2, characterized in that: A guide rod (9) is vertically slidably connected to the fixed ring (8). The guide rod (9) is fixedly connected to the top of the inner wall of the circular shell (1). Guide plates (12) for guiding the baffle (4) are provided on both sides of the baffle (4). The guide plates (12) are fixedly connected inside the circular shell (1).

4. The baffle device for a colloid mill according to claim 1, characterized in that: The circular shell (1) has several mounting slots (5), and the baffle (4) is fitted with the inner wall of the mounting slot (5) with a clearance.

5. The baffle device for a colloid mill according to claim 1, characterized in that: A sealing cap (3) is fixedly installed at the bottom of the circular shell (1).

6. The baffle device for a colloid mill according to claim 5, characterized in that: The circular shell (1) and the sealing cover (3) are provided with through holes (6) at corresponding positions, and a sleeve is fixedly connected between the two through holes (6).

7. The baffle device for a colloid mill according to claim 1, characterized in that: A rotating shaft (13) is vertically rotatably connected to the baffle (4), and a guide bar (14) is fixedly connected to the rotating shaft (13). The bottom of the guide bar (14) contacts the top of the baffle (4).

8. The baffle device for a colloid mill according to claim 7, characterized in that: The linkage assembly (15) includes several L-shaped rods (16) fixedly connected to the top of the circular housing (1). The rotating shaft (13) has an inclined guide groove (17) on its surface, and the L-shaped rods (16) are inserted into the guide groove (17).

9. The baffle device for a colloid mill according to claim 8, characterized in that: The L-shaped rod (16) is clearance-fitted with the inner wall of the guide groove (17).

10. The baffle device for a colloid mill according to claim 9, characterized in that: The circular shell (1) is coaxial with the grinding rotor (2).

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