Pulverizer capable of automatically cleaning grinding chamber

Abstract

The utility model discloses a flour mill capable of automatically cleaning a grinding chamber, and relates to the technical field of flour mills, the flour mill is arranged on the rack, the flour mill comprises a machine body and a machine cover, a grinding motor is arranged on the machine cover, an upper grinding disc is arranged on the grinding motor, the grinding chamber is arranged in the machine body, a lower grinding disc is arranged in the grinding chamber, and the machine body is connected with the machine cover through a hinge shaft. A driving cylinder is hinged to the rack, and the output end of the driving cylinder is hinged to the machine cover. An annular air pipe is arranged on the inner wall of the grinding chamber, an air blowing pipe is arranged on the circumference of the side, close to the lower grinding disc, of the annular air pipe, and one end of the annular air pipe extends out of the machine body and is provided with an air connecting opening which is connected with high-pressure air. According to the utility model, the driving cylinder is used for replacing manpower to open the machine cover, the labor intensity of workers is reduced, the annular air pipe and the air blowing pipe are used for realizing the cleaning of the grinding chamber under the condition that the machine cover is not opened, the working efficiency is improved, and the working efficiency is improved. And the cleaning efficiency and quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding mills, in particular to a grinding mill capable of automatically cleaning a grinding hall. Background Art

[0002] Powder coating is a solid powdered synthetic resin coating composed of solid resin, pigments, fillers and additives. Its processing steps are usually three steps. The first step is to pre-mix all coarse granular raw materials with relevant additives; the second step is to melt the pre-mixed raw materials through an extruder, in this process the components of the coating are homogenized and pressed into sheets; the third step is to cut the formed sheets into pieces, grind the fragments with a grinder, screen the ground powder and pack it in bags to form the product.

[0003] The existing utility model patent with announcement number CN 209772248 U and announcement date 2019.12.13 discloses a powder coating grinding machine. The patent is implemented by respectively penetrating the upper connecting hole and the lower connecting hole through the side walls of the upper connecting seat and the lower connecting seat. After the upper shell and the grinding body are covered, the threaded rod hinged at the position of the lower connecting hole is rotated to the upper end and passed through the upper connecting hole. Then the pressing plate is rotated and pressed down, so that the upper shell and the grinding body can be pressed and sealed. Similarly, when it needs to be opened, the pressing plate is rotated out and the threaded rod is flipped down to open the upper shell, which can facilitate the opening or closing of the grinding machine.

[0004] However, there are the following problems in this patent: 1. When the grinding mill is in use, it is necessary to grind a variety of types and colors of coatings. Therefore, when grinding two powders of different colors, it is necessary to clean the powder left in the grinding hall from the previous grinding to prevent cross-contamination of the two colors when grinding another coating. However, the cleaning of the grinding hall currently requires opening the lid and manually using a vacuum cleaner to clean it. On the one hand, this method has very limited cleaning efficiency and cannot clean some structural dead corners; 2. Since a motor is installed on the upper shell, the weight of the entire upper shell is increased. In this patent, the opening of the upper shell needs to be done manually, which is very labor-intensive for the staff.

[0005] Therefore, there is an urgent need for a grinding mill that can automatically clean the grinding hall to improve the cleaning efficiency and quality of the powder in the grinding hall and reduce the labor intensity of the staff when opening the upper shell. Utility Model Content

[0006] In response to the above technical problems, the utility model provides a grinding mill that can automatically clean the grinding hall, which is used to solve the problem that the existing grinding hall cleaning requires manual opening of the upper shell to be completed, and the cleaning efficiency and quality of the grinding hall are very limited, and the labor intensity of the staff is high.

[0007] The above technical objectives of the present invention are achieved through the following technical solutions:

[0008] A grinding mill capable of automatically cleaning a grinding hall, comprising a frame, a grinding mill mounted on the frame, the grinding mill comprising a body and a cover, a grinding motor mounted on the cover, an upper grinding disc mounted on the output end of the grinding motor, a grinding hall mounted within the body, a lower grinding disc mounted within the grinding hall, the body and the cover being connected via a hinged shaft, at least one driving cylinder hingedly mounted on the frame, the output end of the driving cylinder hingedly mounted to the cover;

[0009] At least one annular air pipe is fixedly provided on the inner wall of the grinding hall, and a plurality of air blowing pipes are provided on the circumference of one side of the annular air pipe close to the center of the grinding hall. One end of the annular air pipe extends outside the machine body and is provided with an air inlet, and the air inlet is connected to high-pressure air;

[0010] The machine body is provided with a discharge port at the position of the lower grinding disc, and a material feeding gap is provided between the lower grinding disc and the discharge port.

[0011] Furthermore, the air blowing pipe is arranged obliquely relative to the annular air pipe, and when the annular air pipe is connected to the high-pressure air, a rotating airflow is formed in the grinding hall.

[0012] Furthermore, the grinding hall is provided with a conical guide ring around the discharge port, the guide ring is provided with a plurality of support columns, a tray is fixed on the support columns, and the lower grinding disc is detachably mounted on the tray.

[0013] Furthermore, the machine cover is provided with a connecting pipe at the position of the grinding motor, the grinding motor is installed at one end of the connecting pipe, and a feed pipe is obliquely provided on the connecting pipe, and the feed pipe is connected to the grinding hall.

[0014] Furthermore, an annular blanking trough is provided on one side of the upper grinding disc close to the machine cover, and a plurality of blanking holes are provided through the annular blanking trough in which the upper grinding disc is located.

[0015] Furthermore, the machine body is provided with a collection chamber at the discharge port, the collection chamber is connected to a discharge pipe perpendicular to the axis, an auger is provided in the discharge pipe, and a reduction motor is provided at one end of the auger.

[0016] Furthermore, the frame includes supporting legs and a table top arranged on the supporting legs, a spring is arranged between the supporting legs and the table top, and a vibration motor is arranged on the table top.

[0017] Furthermore, the blanking hole is an elongated hole.

[0018] In summary, the beneficial technical effects of the present invention are:

[0019] (1) The drive cylinders on both sides of the machine body are used to replace manpower to open and close the machine cover, which realizes the mechanized operation of the machine cover and reduces the labor intensity of the staff when opening the machine cover. At the same time, the annular air pipe is connected to the high-pressure air from the outside, and the entire grinding hall is blown through several blowing pipes. The blown powder is discharged from the feeding gap, so that the whole cleaning process can be achieved without opening the machine cover, and the cleaning efficiency and quality are improved.

[0020] (2) The tilted air blowing pipe can form a rotating airflow in the grinding hall when blowing air outward. The rotating airflow increases the contact area between the airflow and the grinding hall, thereby further improving the quality and efficiency of cleaning.

[0021] (3) The tray is used to achieve a detachable connection with the lower grinding disc, making it convenient to replace the lower grinding disc.

[0022] (4) The use of a conical guide ring prevents the powder from being retained in the grinding hall, allowing the blown-down powder to be quickly discharged through the material gap, making the cleaning more thorough. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 yes Figure 1 Structural diagram from another angle;

[0025] Figure 3 It is a schematic diagram with the hood hidden;

[0026] Figure 4 yes Figure 3 The schematic diagram of the lower millstone is hidden;

[0027] Figure 5 It is a structural diagram of the upper die plate;

[0028] Figure 6 It is a schematic diagram of the internal structure of the utility model.

[0029] Figure numerals: 1. Frame; 2. Machine body; 3. Machine cover; 4. Articulated shaft; 5. Drive cylinder; 6. Connecting pipe; 7. Grinding motor; 8. Feed pipe; 9. Upper grinding disc; 10. Grinding hall; 11. Annular air pipe; 12. Air blow pipe; 13. Air inlet; 14. Guide ring; 15. Support column; 16. Tray; 17. Positioning hole; 18. Lower grinding disc; 19. Positioning column; 20. Feed gap; 21. Discharge port; 22. Aggregate chamber; 23. Discharge pipe; 24. Auger; 25. Reducer motor; 26. Annular blanking chute; 27. Blanking hole; 28. Spring; 29. Vibration motor. DETAILED DESCRIPTION

[0030] The present invention will be described clearly and completely below with reference to the embodiments.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] In the description of the embodiments, unless otherwise specified or limited, the terms "disposed" and "connected" should be understood broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct connections, connections through an intermediary medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on their specific circumstances.

[0033] See attached Figure 1-6 The figure shows a grinding mill capable of automatically cleaning a grinding hall, comprising a frame 1, wherein the frame 1 comprises four supporting legs and a table arranged on the supporting legs, a grinding mill is welded and fixed in the center of the table top, and specifically, the grinding mill comprises a body 2, a top of the body 2 is provided with a cover 3, the cover 3 and the body 2 are connected by a hinge shaft 4, so that the cover 3 can be rotated and opened in an arc around the hinge shaft 4, and at the same time, the table top is located on both sides of the body 2 and is respectively hinged with a driving cylinder 5, the driving cylinder 5 can be a kind of oil cylinder, electric cylinder, or air cylinder, and the output ends of the driving cylinder 5 are respectively hinged with the cover 3, and when the cover 3 needs to be opened, the two driving cylinders 5 drive the cover 3 to open around the hinge shaft 4, thereby replacing the original manual operation of opening the cover 3, thereby reducing the labor intensity of the staff, and at the same time, the driving cylinder 5 replaces the bolts to achieve the sealing between the cover 3 and the body 2, and there is no need to operate the bolts one by one by manpower;

[0034] In addition, a connecting pipe 6 is fixed to the central bolt of the machine cover 3, and a grinding motor 7 is installed on the other end of the connecting pipe 6 through a flange. The output end of the grinding motor 7 extends into the machine body 2 through the connecting pipe 6, and an upper grinding disc 9 is installed at the output end of the grinding motor 7. A feeding pipe 8 is obliquely arranged on the connecting pipe 6, and the feeding pipe 8 is connected to the machine body 2 through the connecting pipe 6. When grinding, the raw material is poured into the machine body 2 through the feeding pipe 8, and there is no need to open the machine cover 3 to add material;

[0035] As a grinding mill capable of automatically cleaning the grinding hall, a grinding hall 10 is provided in the machine body 2, and a discharge port 21 is provided in the center of the bottom of the grinding hall 10. A conical guide ring 14 is provided around the discharge port 21 of the grinding hall 10. The guide ring 14 can quickly guide the ground powder to the discharge port 21 to prevent a large amount of stagnation in the grinding hall 10. Four support columns 15 are vertically provided around the discharge port 21 of the guide ring 14, and a tray 16 is horizontally provided on the top of the four support columns 15. Thus, a feeding gap 20 is formed between the discharge port 21 and the tray 16 through the support columns 15, and the powder can reach the discharge port 21 through the feeding gap 20.

[0036] A plurality of positioning holes 17 are provided on the tray 16. A lower grinding disc 18 is provided on the tray 16 opposite to the upper grinding disc 9. Positioning posts 19 are provided on the lower grinding disc 18 at positions corresponding to the positioning holes 17. The lower grinding disc 18 is fixed on the tray 16 by the engagement of the positioning posts 19 with the positioning holes 17. At the same time, a detachable connection is also achieved, which facilitates the replacement of the lower grinding disc 18.

[0037] Most importantly, two annular air pipes 11 are welded and fixed to the inner wall of the grinding hall 10. One end of the annular air pipe 11 extends to the outside of the machine body 2 and is connected to an air inlet 13. An air blow pipe 12 is arranged obliquely on the annular air pipe 11. When cleaning the powder in the grinding hall 10, the air inlet 13 is connected to an external air compressor, and high-pressure air is passed into the annular air pipe 11. Then, the air is sprayed out through the air blow pipe 12 to clean the grinding hall 10.

[0038] It should be noted that the other end of the annular air pipe 11 is closed. This ensures that all the high-pressure air in the annular air pipe 11 can be ejected through the air blowing pipe 12, ensuring that sufficient pressure is applied to the grinding hall 10, making the cleaning more thorough. At the same time, because the air blowing pipe 12 is set at an angle, a rotating airflow is formed in the grinding hall 10 through the air blowing pipe 12, which can more thoroughly clean the powder.

[0039] It can be seen that by providing the annular air pipe 11 and the inclined air blowing pipe 12 on the inner wall of the grinding hall 10, automatic cleaning of the grinding hall 10 is achieved, without the need to open the machine cover 3 for cleaning. At the same time, mechanical cleaning replaces manual labor, thereby improving the efficiency and quality of cleaning of the grinding hall 10.

[0040] At the same time, the body 2 is welded with a collection chamber 22 on the discharge port 21. The collection chamber 22 is used to collect the ground powder. In addition, a discharge pipe 23 is provided on the collection chamber 22. An auger 24 is provided in the discharge pipe 23. A reduction motor 25 is provided at one end of the auger 24. When in use, the reduction motor 25 drives the auger 24 to discharge the powder in the collection chamber 22 in a quantitative manner, which not only facilitates the collection of the powder, but also ensures the weight of the powder filled into the carton each time.

[0041] In order to ensure the grinding efficiency of the powder, an annular feeding trough 26 is provided on the side of the upper grinding disc 9 close to the machine cover 3. At the same time, an elongated feeding hole 27 is opened in the annular feeding trough 26. When the raw material is poured into the feeding pipe 8, the raw material falls into the annular feeding trough 26. Then, the upper grinding disc 9 is driven to rotate by the grinding motor 7. The raw material enters between the upper grinding disc 9 and the lower grinding disc 18 through the feeding hole 27. Under the action of the grinding layers of the two, the raw material is ground. The powder obtained after grinding falls from the feeding gap 20 into the collecting chamber 22.

[0042] Furthermore, in order to ensure that the airflow can reach the annular blanking trough 26 during cleaning, the height of the annular blanking trough 26 is 10 mm, which not only ensures the restriction of the raw materials but also avoids interference with the airflow;

[0043] As a grinding mill capable of automatically cleaning the grinding hall, a spring 28 is provided between the support legs and the table top. The spring 28 can give the entire grinding mill a certain elasticity. At the same time, two vibration motors 29 are installed on one side of the table top. When cleaning, the vibration motor 29 drives the entire grinding mill to vibrate, and the vibration is used to further shake the powder in the grinding hall 10 into the collection chamber 22, making the cleaning more thorough.

[0044] When in use, first, the cover 3 is closed by driving the cylinder 5, and the grinding motor 7 is started to drive the upper grinding disc 9 to rotate. Then, the raw materials are poured into the feeding pipe 8, and the raw materials fall into the annular drop chute 26 through the connecting pipe 6, and finally reach the space between the upper grinding disc 9 and the lower grinding disc 18 through the drop hole 27 for grinding. The ground powder falls into the collecting chamber 22 through the feeding gap 20 and is discharged quantitatively by the auger 24.

[0045] When the grinding hall 10 needs to be cleaned, high-pressure air is introduced into the annular air pipe 11 through the air inlet 13, and acts on various positions of the grinding hall 10 through the inclined blowing pipe 12. The powder blown by the air flow is collected into the collection chamber 22 through the discharge port 21. At the same time, the vibration motor 29 is started during the cleaning process, and the powder in the grinding hall 10 is cleaned more thoroughly into the collection chamber 22 by vibration. Finally, the cleaned powder is discharged through the auger 24 to complete the entire cleaning process.

[0046] The above description is only a preferred specific embodiment of the present invention and does not limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A grinding mill capable of automatically cleaning a grinding hall, comprising a frame (1), a grinding mill being provided on the frame (1), the grinding mill comprising a body (2) and a cover (3), a grinding motor (7) being provided on the cover (3), an upper grinding disc (9) being provided at the output end of the grinding motor (7), a grinding hall (10) being provided in the body (2), and a lower grinding disc (18) being provided in the grinding hall (10), characterized in that: The machine body (2) and the machine cover (3) are connected via a hinge shaft (4); at least one driving cylinder (5) is hingedly connected to the machine frame (1); and the output end of the driving cylinder (5) is hingedly connected to the machine cover (3); At least one annular air pipe (11) is fixedly provided on the inner wall of the grinding hall (10), and a plurality of air blowing pipes (12) are provided on the circumference of one side of the annular air pipe (11) close to the center of the grinding hall (10). One end of the annular air pipe (11) extends to the outside of the machine body (2) and is provided with an air inlet (13), and the air inlet (13) is connected to high-pressure air. The machine body (2) is provided with a discharge port (21) at the position of the lower grinding disc (18), and a material discharge gap (20) is provided between the lower grinding disc (18) and the discharge port (21).

2. A grinding mill capable of automatically cleaning a grinding hall according to claim 1, characterized in that: The blowing pipe (12) is arranged obliquely relative to the annular air pipe (11), and when the annular air pipe (11) is connected to high-pressure air, a rotating airflow is formed in the grinding hall (10).

3. A mill capable of automatically cleaning a grinding hall according to claim 1, characterized in that: The grinding hall (10) is provided with a conical guide ring (14) around the discharge port (21), and a plurality of support columns (15) are provided on the guide ring (14). A tray (16) is fixed on the support columns (15), and the lower grinding disc (18) is detachably mounted on the tray (16).

4. A flour mill capable of automatically cleaning a grinding hall according to claim 1, characterized in that: The machine cover (3) is provided with a connecting pipe (6) at the position of the grinding motor (7), and the grinding motor (7) is installed at one end of the connecting pipe (6). A feeding pipe (8) is obliquely provided on the connecting pipe (6), and the feeding pipe (8) is connected to the grinding hall (10).

5. A flour mill capable of automatically cleaning a grinding hall according to claim 1, characterized in that: An annular blanking groove (26) is provided on one side of the upper grinding disc (9) close to the machine cover (3), and a plurality of blanking holes (27) are provided through the upper grinding disc (9) located in the annular blanking groove (26).

6. A flour mill capable of automatically cleaning a grinding hall according to claim 1, characterized in that: The machine body (2) is provided with a material collection chamber (22) at the discharge port (21), the material collection chamber (22) is connected to a discharge pipe (23) perpendicular to the axis, an auger (24) is provided in the discharge pipe (23), and a reduction motor (25) is provided at one end of the auger (24).

7. A flour mill capable of automatically cleaning a grinding hall according to claim 1, characterized in that: The frame (1) comprises supporting legs and a table top arranged on the supporting legs, a spring (28) is arranged between the supporting legs and the table top, and a vibration motor (29) is arranged on the table top.

8. The mill capable of automatically cleaning the grinding hall according to claim 5, characterized in that: The blanking hole (27) is a long hole.

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