Powder mill for powder coating production

Abstract

The utility model provides a pulverizer for powder coating production. The pulverizer comprises a rack, a grinding cylinder, a rotating base, a motor I, a motor II, a driving shaft, a connecting rod, a main grinding roller and a secondary grinding roller, the grinding cylinder is mounted on the rack, a rotating base is rotationally mounted at the bottom in the grinding cylinder, and the rotating base is in transmission connection with a motor I mounted on the rack; the driving shaft is positioned in the grinding cylinder, and the upper end is rotationally mounted at the top of the grinding cylinder through a bearing and is in transmission connection with a motor II mounted at the top of the grinding cylinder; the connecting rods are evenly connected to the lower portion of the side wall of the driving shaft, the main grinding rollers are rotationally installed on the connecting rods, and the auxiliary grinding rollers are rotationally installed on installation rods arranged on the connecting rods. The motor I and the motor II respectively drive the rotating chassis and the driving shaft to rotate relatively to grind and crush fragments, and through rolling fit of the main grinding roller and the secondary grinding rollers, the grinding and crushing positions of the fragments are increased, and the grinding efficiency of the powder coating fragments is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of powder coating production, in particular to a grinding machine for powder coating production. Background Art

[0002] Powder coating is completely different from general coatings. It exists in the form of fine powder. Powder coating is mainly divided into two categories: thermoplastic powder coating and thermosetting powder coating. Thermoplastic powder coating is composed of thermoplastic resin, pigment, filler, plasticizer and stabilizer. Thermoplastic powder coating includes polyethylene, polypropylene, polyester, polyvinyl chloride, chlorinated polyether, polyamide, cellulose and polyester. Thermosetting powder coating is composed of thermosetting resin, curing agent, pigment, seasoning and additives. Thermosetting powder coating includes epoxy resin, polyester and acrylic resin. In the production process of powder coating, the powder raw materials are mixed and heated to melt, then cooled and solidified and broken into pieces, and then the pieces are ground into powder by a grinding machine, and then the qualified fine powder coating is separated by a separation system. The current grinding machine has a slow speed and low efficiency when grinding, which reduces the production efficiency of powder coating. Utility Model Content

[0003] In order to overcome the problems existing in the background technology, the utility model provides a powder grinding machine for powder coating production to solve the technical problem mentioned in the background technology that the current powder grinding machine has a slow grinding speed and low efficiency, thereby reducing the production efficiency of powder coating.

[0004] To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0005] A powder grinding machine for powder coating production comprises a frame 1, a grinding cylinder 2, a rotating base 3, a motor I4, a motor II5, a driving shaft 6, a connecting rod 7, a main grinding roller 8, and a secondary grinding roller 9; the grinding cylinder 2 is mounted on the frame 1, and a rotating base 3 is rotatably mounted on the bottom of the grinding cylinder 2, and the rotating base 3 is drivingly connected to the motor I4 mounted on the frame 1; the driving shaft 6 is located in the grinding cylinder 2, and the upper end is rotatably mounted on the top of the grinding cylinder 2 through a bearing, and is drivingly connected to the motor II5 mounted on the top of the grinding cylinder 2; the connecting rod 7 is evenly connected to the lower part of the side wall of the driving shaft 6, and the main grinding roller 8 is rotatably mounted on the connecting rod 7 and is in rolling contact with the rotating base 3; the secondary grinding roller 9 is rotatably mounted on a mounting rod 10 provided on the connecting rod 7, and the secondary grinding roller 9 is in rolling contact with the main grinding roller 8, and the rotating base 3 and the driving shaft 6 rotate in opposite directions.

[0006] Preferably, the upper end of the driving shaft 6 is telescopically connected to the output shaft of the motor II 5, and the limit block 11 provided at the end of the output shaft of the motor II 5 is slidably installed in the square chamber 12 provided in the driving shaft 6, and a strong spring 13 is installed in the square chamber 12.

[0007] Preferably, the side wall of the grinding cylinder 2 is connected to a feed hopper 15 via a feed pipe 14 .

[0008] Preferably, a feed pipe 16 is laterally connected to the bottom of the feed hopper 15, a spiral push rod 17 is installed in the feed pipe 16, the spiral push rod 17 is transmission-connected to the motor III 18 connected to the end of the feed pipe 16, the other end of the feed pipe 16 is connected to the side wall of the feed pipe 14, one end of the feed pipe 14 is open and the other end is connected to the upper part of the side wall of the grinding cylinder 2, a connecting tube 19 is provided on the top of the grinding cylinder 2, the motor II 5 is installed on the connecting tube 19, and the side wall of the connecting tube 19 is connected to a negative pressure tube 20.

[0009] The beneficial effect of the utility model is that when the powder coating fragments are ground, the motor Ⅰ4 and the motor Ⅱ5 respectively drive the rotating chassis and the drive shaft 6 to rotate relative to each other, so that the rotating chassis and the main grinding roller 8 rotate relatively faster, and the fragments are crushed and pulverized. Through the rolling cooperation of the main grinding roller 8 and multiple secondary grinding rollers 9, the position of crushing the fragments is increased, the grinding efficiency of the powder coating fragments is improved, and thus the production efficiency of the powder coating is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0011] Figure 2 It is a schematic diagram of the internal structure of the grinding cylinder.

[0012] Figure 3 It is a schematic diagram of the installation structure of the drive shaft.

[0013] Figure 4 It is a schematic diagram of the connection structure between the feed pipe and the feed hopper. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to facilitate the understanding of technicians.

[0015] like Figure 1-4As shown, the utility model provides a powder grinding machine for powder coating production, including a frame 1, a grinding cylinder 2, a rotating base 3, a motor I4, a motor II5, a driving shaft 6, a connecting rod 7, a main grinding roller 8, and a secondary grinding roller 9; the grinding cylinder 2 is installed on the frame 1, and a rotating base 3 is rotatably installed at the bottom of the grinding cylinder 2, and the rotating base 3 is transmission-connected with the motor I4 installed on the frame 1; the driving shaft 6 is located in the grinding cylinder 2, and the upper end is rotationally installed on the top of the grinding cylinder 2 through a bearing, and is transmission-connected with the motor II5 installed on the top of the grinding cylinder 2; the connecting rod 7 is evenly connected to the lower part of the side wall of the driving shaft 6, and the main grinding roller 8 is rotationally installed on the connecting rod 7 and is in rolling contact with the rotating base 3; the secondary grinding roller 9 is rotationally installed on the mounting rod 10 arranged on the connecting rod 7, and the secondary grinding roller 9 is in rolling contact with the main grinding roller 8, and the rotating base 3 and the driving shaft 6 rotate in opposite directions. During operation, powder coating fragments are placed in the grinding cylinder 2 and located on the rotating base 3, the motor I4 drives the rotating base 3 to rotate, the motor II5 drives the main grinding roller 8 to rotate relative to the rotating base 3, and due to the rolling contact between the rotating base 3 and the main grinding roller 8, the rotating base 3 and the main grinding roller 8 are relatively rolled, thereby crushing the powder coating fragments, and due to the rolling contact between the secondary grinding roller 9 and the main grinding roller 8, the main grinding roller 8 drives the secondary grinding roller 9 to roll, thereby squeezing and crushing the fragments between the main grinding roller 8 and the secondary grinding roller 9. When the utility model grinds the powder coating fragments, the motor I4 and the motor II5 respectively drive the rotating chassis and the driving shaft 6 to rotate relative to each other, so that the rotating chassis and the main grinding roller 8 rotate relatively faster, crushing and crushing the fragments, and through the rolling cooperation of the main grinding roller 8 and multiple secondary grinding rollers 9, the position of crushing and crushing the fragments is increased, and the grinding efficiency of the powder coating fragments is improved, thereby improving the production efficiency of the powder coating.

[0016] like Figure 3 As shown, the upper end of the driving shaft 6 is telescopically connected to the output shaft of the motor II 5, and the limit block 11 provided at the end of the output shaft of the motor II 5 is slidably installed in the square chamber 12 provided in the driving shaft 6, and a strong spring 13 is installed in the square chamber 12. When there are many fragments in the grinding cylinder 2, when the main grinding roller 8 is rolling and crushing, the strong spring 13 in the square chamber 12 can play a shock-absorbing role, thereby reducing the resistance of the main grinding roller 8 to rotation and improving the efficiency of fragment crushing.

[0017] like Figure 1-4 The side wall of the grinding cylinder 2 is connected to a feed hopper 15 through a feed pipe 14. The fragments in the feed hopper 15 enter the grinding cylinder 2 through the feed pipe 14 for grinding and crushing, thereby improving the feeding efficiency of the powder coating fragments.

[0018] like Figure 4As shown, the bottom of the feed hopper 15 is transversely connected with a feed pipe 16, and a spiral push rod 17 is installed in the feed pipe 16. The spiral push rod 17 is connected to the motor III 18 connected to the end of the feed pipe 16. The other end of the feed pipe 16 is connected to the side wall of the feed pipe 14. The feed pipe 14 is open at one end and connected to the upper part of the side wall of the grinding cylinder 2 at the other end. A connecting cylinder 19 is provided at the top of the grinding cylinder 2. The motor II 5 is installed on the connecting cylinder 19. The side wall of the connecting cylinder 19 is connected to a negative pressure pipe 20. The motor III 18 drives the spiral push rod 17 to rotate, so that the powder coating fragments are pushed forward in the feed pipe 16 into the feed pipe 14. The negative pressure generated by the negative pressure pipe 20 sucks the fragments in the feed pipe 14 into the grinding cylinder 2. The air enters the open end of the feed pipe 14 to form an airflow to suck the fragments into the grinding cylinder 2, thereby improving the efficiency of fragment feeding.

[0019] Working process:

[0020] Motor III 18 drives the spiral push rod 17 to rotate, so that the powder coating fragments are pushed forward in the feeding pipe 16 into the feeding pipe 14. The negative pressure generated by the negative pressure pipe 20 sucks the fragments in the feeding pipe 14 into the grinding cylinder 2. Air enters at the open end of the feeding pipe 14 to form an airflow to suck the fragments into the grinding cylinder 2. Motor I4 drives the rotating base 3 to rotate, and motor II5 drives the main grinding roller 8 and the rotating base 3 to rotate relative to each other. Since the rotating base 3 and the main grinding roller 8 are in rolling contact, the rotating base 3 and the main grinding roller 8 roll relative to each other, thereby crushing and pulverizing the powder coating fragments. Since the secondary grinding roller 9 is in rolling contact with the main grinding roller 8, the main grinding roller 8 drives the secondary grinding roller 9 to roll, thereby squeezing and crushing the fragments between the main grinding roller 8 and the secondary grinding roller 9.

[0021] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the utility model.

Claims

1. A pulverizer for powder coating production, characterized in that: The invention comprises a frame (1), a grinding cylinder (2), a rotating base (3), a motor I (4), a motor II (5), a driving shaft (6), a connecting rod (7), a main grinding roller (8), and a secondary grinding roller (9); the grinding cylinder (2) is mounted on the frame (1), a rotating base (3) is rotatably mounted on the bottom of the grinding cylinder (2), and the rotating base (3) is drivingly connected to the motor I (4) mounted on the frame (1); the driving shaft (6) is located in the grinding cylinder (2), and the upper end is rotatably mounted on the top of the grinding cylinder (2) through a bearing, and is drivingly connected to the motor II (5) mounted on the top of the grinding cylinder (2); the connecting rod (7) is evenly connected to the lower part of the side wall of the driving shaft (6), the main grinding roller (8) is rotatably mounted on the connecting rod (7), and is in rolling contact with the rotating base (3); the secondary grinding roller (9) is rotatably mounted on a mounting rod (10) arranged on the connecting rod (7), and the secondary grinding roller (9) is in rolling contact with the main grinding roller (8), and the rotating base (3) and the driving shaft (6) rotate in opposite directions.

2. A powder coating production grinding machine according to claim 1, characterized in that: The upper end of the drive shaft (6) is telescopically connected to the output shaft of the motor II (5), and a limit block (11) provided at the end of the output shaft of the motor II (5) is slidably installed in a square chamber (12) provided in the drive shaft (6), and a strong spring (13) is installed in the square chamber (12).

3. A powder coating production grinding machine according to claim 1 or 2, characterized in that: The side wall of the grinding cylinder (2) is connected to a feed hopper (15) via a feed pipe (14).

4. A powder coating production grinding machine according to claim 3, characterized in that: A feed pipe (16) is laterally connected to the bottom of the feed hopper (15), a spiral push rod (17) is installed in the feed pipe (16), the spiral push rod (17) is drivingly connected to a motor III (18) connected to the end of the feed pipe (16), the other end of the feed pipe (16) is connected to the side wall of the feed pipe (14), one end of the feed pipe (14) is open and the other end is connected to the upper part of the side wall of the grinding cylinder (2), a connecting cylinder (19) is arranged on the top of the grinding cylinder (2), the motor II (5) is installed on the connecting cylinder (19), and the side wall of the connecting cylinder (19) is connected to a negative pressure pipe (20).

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