Colloid mill with adjustable grinding precision

Abstract

The utility model relates to a colloid mill with adjustable grinding precision, which comprises a stator and a rotor, the stator and the rotor are mounted in a mutually matched manner, and the rotor rotates relative to the stator so as to grind materials between the rotor and the stator; a cavity pipe is concentrically installed outside the stator, outer circular pipes are installed outside the cavity pipe and outside the stator at the same time, the outer circular pipes and the cavity pipe are connected through threads, and the outer circular pipes and the stator are installed in a matched mode through bearings. The outer circular pipe rotates relative to the cavity pipe, rotation of the stator is avoided through the bearing, the stator is made to linearly move upwards or downwards in the axial direction, and therefore the grinding precision between the stator and the rotor is adjusted. By arranging the outer circular tube and the bearing, relative rotation between the stator and the cavity tube during gap adjustment can be avoided, so that the sealing ring is protected, and the service life of the sealing ring is prolonged; meanwhile, the occupied volume is small, the adjusting precision is high, the structure is reliable and maintenance is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a grinding equipment technical field especially a colloidal mill with adjustable grinding precision. BACKGROUND

[0002] The colloidal mill is used for homogenizing various emulsions, is simple to operate and is widely applied in lithium battery, chemical industry (dye, paint etc.

[0003] In the prior art, the gap adjustment of the colloidal mill mainly adopts a dry grinding mode, and the grinding gap adjustment is realized by the relative rotary motion of the stator in the cavity. However, the dry grinding mode makes the sealing element between the stator and the cavity prone to damage due to being located between the contact surfaces of the two relative rotary motions, thereby shortening the service life of the sealing element. Meanwhile, long-term wear and tear also causes changes in the positioning size, making the original scale no longer accurate and requiring repeated zero setting operations. UTILITY MODEL CONTENTS

[0004] Therefore, it is necessary to provide a colloidal mill with adjustable grinding precision in view of the problems of shortening the service life of the sealing element and requiring repeated zero setting operations due to changes in the positioning size caused by the dry grinding mode for gap adjustment of the colloidal mill in the prior art.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] A colloidal mill with adjustable grinding precision comprises a stator and a rotor which are installed in cooperation, the rotor rotates relative to the stator, thereby grinding the material between the rotor and the stator;

[0007] A cavity tube is concentrically installed on the outside of the stator, an outer circular tube is installed on the outside of the cavity tube and the outside of the stator at the same time, the outer circular tube and the cavity tube are connected by threads, and the outer circular tube and the stator are installed in cooperation through bearings;

[0008] The outer circular tube rotates relative to the cavity tube, the rotation of the stator is avoided through the bearings, and the stator is made to move linearly upward or downward along the axial direction, thereby adjusting the grinding precision between the stator and the rotor.

[0009] As a further improvement of the above technical scheme:

[0010] A grinding hole in the shape of a circular truncated cone is formed in the middle part of the stator.

[0011] An inclined surface is arranged along the annular outer side wall surface of the rotor, thereby making the outer side wall surface of the rotor in the shape of an inclined plane.

[0012] The grinding gap is formed between the inclined surface and the inner side wall surface of the grinding hole.

[0013] The slope of the inclined surface is not equal to the slope of the inner side wall surface of the grinding hole, so that the width of the grinding gap decreases from top to bottom.

[0014] The outer side wall surface of the stator and the inner side wall surface of the cavity tube are matched with a sealing ring.

[0015] The top of the stator is matched with a first pressing plate, and the top of the outer circular tube is matched with a second pressing plate.

[0016] The first pressing plate and the second pressing plate jointly limit the bearing.

[0017] The outer circumferential surface of the cavity tube is provided with external threads.

[0018] The inner side wall surface of the outer circular tube is provided with internal threads corresponding to the external threads, and the outer circular tube is matched and installed between the cavity tube through the engagement of the internal threads and the external threads.

[0019] The cavity tube is internally provided with a cavity for storing ground materials.

[0020] The outer circumferential surface of the outer circular tube is provided with scale lines along the annular surface.

[0021] The outer circumferential surface of the cavity tube is matched with a pointer corresponding to the scale lines.

[0022] The beneficial effects of the utility model are as follows:

[0023] The utility model discloses compact structure, reasonable, convenient operation can avoid the relative rotation between the stator and the cavity tube when adjusting the gap, thereby effectively protecting the sealing ring, prolonging the service life of the sealing ring, and simultaneously, the occupied volume is small, the adjustment precision is high, the structure is reliable, and the utility model discloses convenient maintenance.

[0024] The utility model also includes the following advantages:

[0025] (1) through the first pressing plate and the second pressing plate, the bearing can be pressed together, so that the outer ring of the bearing is fixed by the second pressing plate and the outer circular tube, and the inner ring of the bearing is fixed by the first pressing plate and the stator.

[0026] (2) by making the width of the grinding gap decrease from top to bottom, the grinding effect is improved.

[0027] (3) through the handle, the operator can hold to rotate the outer circular tube; in addition, the handle is rotatable relative to the outer circular tube, and after adjustment, the handle can be tightened to make the end of the handle tightly contact the outer side wall surface of the cavity tube, so as to further fix and limit the outer circular tube.

[0028] (4) By setting the pointer, for cooperation with the scale line, indicating the operator corresponding to the gap adjustment amount of rotating outer tube; in addition, the pointer corresponding to the lowest installation position of outer tube, can limit the installation position of outer tube, thereby avoiding the installation, adjustment process of outer tube makes its position too low lead to the contact between stator and rotor, improve the safety of the device. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is the structural schematic diagram of the utility model.

[0030] Figure 2 It is the explosion drawing of the utility model.

[0031] Figure 3 It is Figure 1 The top view.

[0032] Figure 4 It is Figure 3 The sectional view of A-A section in the figure.

[0033] Figure 5 It is the schematic diagram of the utility model in working condition.

[0034] Figure 6 It is Figure 1 The front view.

[0035] 1, stator, 101, grinding hole, 2, rotor, 201, inclined plane, 202, center hole, 3, cavity tube, 301, cavity, 4, pointer, 5, outer tube, 6, handle, 7, first pressing plate, 8, second pressing plate, 9, bearing, 10, sealing ring, 11, grinding gap. DETAILED DESCRIPTION

[0036] The specific implementation of the utility model will be described below in combination with the drawings.

[0037] The structure and function of the utility model are as follows:

[0038] For example, Figures 1-6As shown, a kind of adjustable grinding accuracy colloidal mill, including mutually matched installation stator 1 and rotor 2, rotor 2 relative stator 1 rotation, to carry out grinding to material between rotor 2 and stator 1;Stator 1's outside concentric installation cavity tube 3, the outside of cavity tube 3 and the outside of stator 1 are simultaneously installed outer round pipe 5, outer round pipe 5 and cavity tube 3 between using threaded connection, outer round pipe 5 and stator 1 between through bearing 9 cooperation installation;Outer round pipe 5 relative cavity tube 3 rotation, avoid stator 1 rotation by bearing 9, and make stator 1 along axial ascending or descending linear motion, to adjust the grinding accuracy between stator 1 and rotor 2.By setting stator 1, rotor 2, outer round pipe 5 and bearing 9, it can avoid the relative rotation between stator 1 and cavity tube 3 when gap adjustment, to effectively protect sealing ring 10, prolong the service life of sealing ring 10;At the same time, small volume, high adjustment accuracy, reliable structure, easy to maintain.

[0039] The middle part of the stator 1 is provided with a grinding hole 101 in the shape of a circular truncated cone;The outer side wall surface of the rotor 2 is provided with a slope 201 along the annular shape, so that the outer side wall surface of the rotor 2 is in the shape of a slope;The slope 201 and the inner side wall surface of the grinding hole 101 form a grinding gap 11. The material enters the grinding gap 11 through the grinding hole 101 for grinding.

[0040] In the utility model, by rotating the outer round pipe 5, the stator 1 can be driven to move linearly upward or downward along its own axial direction, so as to adjust the width of the grinding gap 11, and further adjust the grinding accuracy of the colloidal mill.

[0041] The slope of the slope 201 is not equal to the slope of the inner side wall surface of the grinding hole 101, so that the width of the grinding gap 11 decreases from top to bottom. By making the width of the grinding gap 11 decrease from top to bottom, the grinding effect can be improved.

[0042] The outer side wall surface of the stator 1 and the inner side wall surface of the cavity tube 3 are cooperatively installed with a sealing ring 10. By setting the sealing ring 10, the stator 1 and the cavity tube 3 are sealed and installed.

[0043] The top of the stator 1 is cooperatively installed with a first pressing plate 7, and the top of the outer round pipe 5 is cooperatively installed with a second pressing plate 8;The first pressing plate 7 and the second pressing plate 8 jointly limit the bearing 9. By setting the first pressing plate 7 and the second pressing plate 8, the bearing 9 is fixed and limited.

[0044] The utility model discloses, the outer tube 5 is cylindrical, and the center is equipped with the mounting hole, is provided with the first boss of the inside wall surface on the mounting hole and is arranged along the ring, and the outer circle of stator 1 is provided with the second boss of the ring arrangement, and the first boss and the second boss support bearing 9 together, first pressing plate 7 and second pressing plate 8 are all annular, and first pressing plate 7 and second pressing plate 8 press bearing 9 together, thereby making the outer ring of bearing 9 be fixed by second pressing plate 8 and outer tube 5 together, and the inner ring of bearing 9 is fixed by first pressing plate 7 and stator 1 together.

[0045] In addition, the stator 1, the rotor 2, the cavity tube 3, the outer tube 5, the first pressing plate 7, the second pressing plate 8 and the bearing 9 are concentrically installed.

[0046] The middle part of the rotor 2 is provided with a center hole 202, and the center hole 202 is used for cooperating with the rotating shaft to be installed, and the rotating shaft drives the rotor 2 to rotate.

[0047] The outer circumferential surface of the cavity tube 3 is provided with external threads; the inner side wall surface of the outer tube 5 is provided with internal threads corresponding to the external threads, and the internal threads and the external threads are engaged, so that the outer tube 5 is installed in cooperation with the cavity tube 3; the outer circumferential surface of the outer tube 5 is provided with scale lines along the annular shape; and the cavity tube 3 is provided with a pointer 4 corresponding to the scale lines in cooperation with the cavity tube 3. The outer tube 5 and the cavity tube 3 are connected through high-precision thread cooperation, the scale lines are calibrated according to the pitch size of the internal threads and the external threads and the inclination angle of the inclined surface 201, and the scale lines are divided according to the following formula:

[0048]

[0049] In the above formula, p represents the pitch of the internal threads and the external threads;

[0050] α represents the inclination angle of the inclined surface 201;

[0051] β represents the rotation angle of the outer tube 5;

[0052] L represents the minimum grinding gap;

[0053] In actual application, as the minimum grinding gap increases, the grinding effect will sharply decrease, therefore, the required adjustment maximum range is not more than 1 mm; in the utility model, the pitch of the internal threads and the external threads is 2 mm, and the inclination angle of the inclined surface 201 is 78°, so that the change of the minimum grinding gap corresponding to one rotation (360°) of the outer tube 5 is L=2*sin (90°-78.7°)=0.392 mm, and the required gap adjustment range is 0.1-1 mm, so that the external threads on the cavity tube 3 need to be provided with at least three circles, and each circle is divided into 100 scales, so that each small scale of the scale lines corresponds to a gap adjustment amount of 0.0039 mm.

[0054] The inside of the cavity pipe 3 is provided with a cavity 301 for storing the ground material.

[0055] In the utility model, the pointer 4 is arranged to cooperate with the scale line to indicate the gap adjustment amount corresponding to the rotation of the outer pipe 5; in addition, the lowest installation position of the pointer 4 corresponding to the outer pipe 5 can limit the installation position of the outer pipe 5, thereby avoiding the contact between the stator 1 and the rotor 2 due to the too low position of the outer pipe 5 during installation and adjustment, and improving the safety of the device.

[0056] The handle 6 is arranged on the side wall of the outer pipe 5, which is convenient for the operator to hold to rotate the outer pipe 5; in addition, the handle 6 is rotatable relative to the outer pipe 5, and after adjustment, the handle 6 can be tightened to abut against the outer side wall of the cavity pipe 3 to further fix and limit the outer pipe 5. In the utility model, the structure form and arrangement number of the handle 6 are arranged according to actual use requirements.

[0057] The working process of the utility model is as follows:

[0058] The outer pipe 5 is rotated clockwise or counterclockwise by the handle 6, the bearing 9 drives the stator 5 to move axially and linearly, thereby enlarging or reducing the minimum grinding gap between the stator 1 and the rotor 2, after confirming that the rotation is in place by the scale line, the handle 6 is tightened to lock the outer pipe 5 from rotating;

[0059] When the outer pipe 5 rotates, the outer ring of the bearing 9 rotates relative to the inner ring, thereby eliminating the torque that should be applied to the stator 1, avoiding the rotation of the stator 1, so that the stator 1 only produces axial linear motion, thereby avoiding the relative rotation between the two matching surfaces in contact with the sealing ring 10, effectively prolonging the service life of the sealing ring 10.

[0060] The above description is an explanation of the utility model, not a limitation of the utility model, the scope defined by the utility model is referred to the claims, and any form of modification is allowed within the protection scope of the utility model.

Claims

1. A colloid mill with adjustable grinding accuracy, characterized in that: It comprises a stator (1) and a rotor (2) which are installed in cooperation, the rotor (2) rotates relative to the stator (1) so as to grind the material between the rotor (2) and the stator (1); The stator (1) is externally concentrically installed with a cavity tube (3), the outer part of the cavity tube (3) is simultaneously installed with an outer circular tube (5) outside the stator (1), the outer circular tube (5) is threadedly connected with the cavity tube (3), and the outer circular tube (5) is cooperatively installed with the stator (1) through a bearing (9). The outer circular tube (5) rotates relative to the cavity tube (3), the stator (1) is prevented from rotating through the bearing (9), and the stator (1) is linearly moved upward or downward along the axial direction so as to adjust the grinding precision between the stator (1) and the rotor (2).

2. A colloid mill with adjustable grinding accuracy according to claim 1, characterized in that: The middle part of the stator (1) is provided with a grinding hole (101) in the shape of a circular truncated cone.

3. A colloid mill with adjustable grinding accuracy according to claim 2, characterized in that: The outer side wall surface of the rotor (2) is provided with a slope (201) along a ring shape, so that the outer side wall surface of the rotor (2) is in the shape of a slope. The slope (201) and the inner side wall surface of the grinding hole (101) form a grinding gap (11).

4. A colloid mill with adjustable grinding accuracy according to claim 3, characterized in that: The slope of the slope (201) is not equal to the slope of the inner side wall surface of the grinding hole (101), so that the width of the grinding gap (11) decreases from top to bottom.

5. A colloid mill with adjustable grinding accuracy according to claim 1, characterized in that: The outer side wall surface of the stator (1) and the inner side wall surface of the cavity tube (3) are cooperatively installed with a sealing ring (10).

6. A colloid mill with adjustable grinding accuracy according to claim 1, characterized in that: The top part of the stator (1) is cooperatively installed with a first pressing plate (7), and the top part of the outer circular tube (5) is cooperatively installed with a second pressing plate (8). The first pressing plate (7) and the second pressing plate (8) jointly limit the bearing (9).

7. A colloid mill with adjustable grinding accuracy according to claim 1, characterized in that: The outer circumferential surface of the cavity tube (3) is provided with external threads.

8. A colloid mill with adjustable grinding accuracy according to claim 7, characterized in that: The inner side wall surface of the outer circular tube (5) is provided with internal threads corresponding to the external threads, the outer circular tube (5) is cooperatively installed between the cavity tube (3) through the engagement of the internal threads and the external threads.

9. A colloid mill with adjustable grinding accuracy according to claim 1, characterized in that: The inner part of the cavity tube (3) is provided with a cavity (301) for storing the ground material.

10. A colloid mill with adjustable grinding accuracy according to claim 1, characterized in that: The outer circumferential surface of the outer circular tube (5) is provided with scale lines along a ring shape. The outer circumferential surface of the cavity tube (3) is cooperatively installed with a pointer (4) corresponding to the scale lines.

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