A phenolic resin coating production abrasive machine

Abstract

This utility model discloses an abrasive mill for producing phenolic resin coatings, relating to the technical field of coating production equipment. The abrasive mill includes a frame, on which a feeding device, a grinding device, and a discharging device are sequentially arranged. A power unit is mounted on one side of the frame, and a control device is also provided on the frame. The feeding device includes a feeding hopper and a feeding pipe, with a flow control valve installed on the feeding pipe. The grinding device comprises two parallel and relatively rotating grinding rollers, with both ends of the grinding rollers mounted on the frame via bearing seats, and the journals of the grinding rollers extending out of the bearing seats. The power unit is connected to the journals of the grinding rollers via a transmission assembly. The control device is electrically connected to the power unit and the flow control valve. This utility model has a reasonable structural design, enabling continuous and stable grinding of coatings, improving grinding efficiency and quality, and is easy to operate and highly adaptable.

Description

Technical Field

[0001] This utility model relates to the technical field of coating production equipment, specifically to an abrasive machine for producing phenolic resin coatings. Background Technology

[0002] Phenolic resin coatings possess excellent corrosion resistance, abrasion resistance, and insulation properties, leading to their widespread application in industrial fields. During the production process of phenolic resin coatings, grinding is necessary to ensure the coating's fineness and uniformity, thereby improving its quality.

[0003] Currently, there are some shortcomings in the abrasive mills used for the production of phenolic resin coatings. For example, the uneven feeding of existing abrasive mills can easily lead to unstable load on the grinding rollers, affecting the grinding effect and efficiency; the grinding rollers have poor wear resistance and are prone to wear after long-term use, requiring frequent replacement and increasing production costs; in addition, existing abrasive mills lack effective filtration devices, and the ground coatings may contain insufficiently ground particles, affecting the quality of the coatings.

[0004] Therefore, there is a need for a phenolic resin coating production abrasive mill with a reasonable structure, uniform feeding, good grinding effect, strong wear resistance, and filtration function to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide an abrasive machine for producing phenolic resin coatings, so as to solve the problems of uneven feeding, poor grinding effect, poor wear resistance and lack of filtration function in the existing abrasive machines.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a phenolic resin coating production abrasive mill, comprising a frame, a feeding device, a grinding device, and a discharging device mounted on the frame, a power unit mounted on one side of the frame, and a control device mounted on the frame. The feeding device includes a feeding hopper and a feeding pipe. The feeding hopper is mounted above the frame. One end of the feeding pipe is connected to the bottom of the feeding hopper, and the other end extends above the grinding device. A flow control valve is mounted on the feeding pipe. The grinding device includes two grinding rollers, which are parallel and spaced apart. Both ends of the grinding rollers are mounted on the frame via bearings. Baffle plates are mounted on the two grinding rollers and are installed inside the frame. The journals of the grinding rollers pass through the bearings and extend to the outside. The power unit is connected to the journals of the two grinding rollers via a transmission assembly to drive the two grinding rollers to rotate relative to each other. The discharging device is located below the grinding device. The control device is electrically connected to the power unit and the flow control valve, respectively.

[0007] Preferably, the feed hopper is equipped with a stirring assembly, which includes a stirring shaft and stirring blades. The stirring shaft is vertically arranged inside the feed hopper, and the stirring blades are fixed on the stirring shaft. A stirring motor is installed on the top of the feed hopper, and the output shaft of the stirring motor is connected to the top of the stirring shaft. The stirring motor is electrically connected to a control device.

[0008] Preferably, the outer surface of the grinding roller is provided with a wear-resistant coating, which is a ceramic coating.

[0009] Preferably, the transmission assembly includes a driving gear, a first driven gear, and a second driven gear. The power device is a drive motor. The output shaft of the drive motor is connected to the driving gear. The first driven gear and the second driven gear are respectively fixed on the journals of the two grinding rollers. The driving gear meshes with the first driven gear, and the first driven gear meshes with the second driven gear.

[0010] Preferably, the discharge device includes a discharge trough and a discharge pipe. The discharge trough is located below the two grinding rollers, and one end of the discharge pipe is connected to the bottom of the discharge trough, while the other end extends to the outside of the frame.

[0011] Preferably, the discharge trough is equipped with a filter screen, which is arranged in a "∧" shape inside the discharge trough.

[0012] Preferably, a protective door is provided on the outside of the grinding device on the frame, and the protective door is provided with an observation window.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) By setting a flow control valve on the feeding device and a stirring component in the feeding hopper, this utility model can achieve uniform feeding of coatings, ensure stable load on the grinding roller, and improve the grinding effect and grinding efficiency.

[0015] (2) The outer surface of the grinding roller is coated with a ceramic wear-resistant coating, which improves the wear resistance and corrosion resistance of the grinding roller, extends its service life, and reduces production costs.

[0016] (3) The discharge device is equipped with a filter screen, which can filter the ground coating, remove particles that are not fully ground, and improve the quality of the coating.

[0017] (4) The overall structure is reasonably designed, easy to operate, and highly adaptable, which can meet the needs of phenolic resin coating production. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2This is a schematic diagram of the grinding roller structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the feed hopper structure of this utility model;

[0021] Figure 4 This is a cross-sectional view of the feed hopper of this utility model;

[0022] Figure 5 This is a cross-sectional view of the feed pipe of this utility model;

[0023] Figure 6 This is a schematic diagram of the discharge trough structure of this utility model;

[0024] Figure 7 This is a cross-sectional view of the discharge trough of this utility model.

[0025] In the diagram: 1. Frame; 2. Feed hopper; 3. Feed pipe; 4. Flow control valve; 5. Stirring shaft; 6. Stirring blades; 7. Stirring motor; 8. Grinding roller; 9. Baffle plate; 10. Drive motor; 11. Drive gear; 12. First driven gear; 13. Second driven gear; 14. Discharge chute; 15. Discharge pipe; 16. Filter screen; 17. Protective door; 18. Observation window. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-7 This utility model provides a technical solution: a phenolic resin coating production abrasive machine, including a frame 1, a feeding device, a grinding device and a discharging device on the frame 1, a power device installed on one side of the frame 1, and a control device on the frame 1.

[0028] The feeding device includes a feeding hopper 2 and a feeding pipe 3. The feeding hopper 2 is installed above the frame 1. One end of the feeding pipe 3 is connected to the bottom of the feeding hopper 2, and the other end extends to the top of the grinding device. A flow control valve 4 is installed on the feeding pipe 3. The flow control valve 4 is an electromagnetic regulating valve with an adjustment accuracy of ±1%. The flow rate can be steplessly adjusted from 0 to 100% through the control device.

[0029] Furthermore, the feed hopper 2 is equipped with a stirring assembly, which includes a stirring shaft 5 and stirring blades 6. The stirring shaft 5 is vertically arranged inside the feed hopper 2, and the stirring blades 6 are fixed on the stirring shaft 5. A stirring motor 7 is installed on the top of the feed hopper 2. The stirring motor 7 is a variable frequency motor with a power of 0.5-1.5kW. The output shaft of the stirring motor 7 is connected to the top of the stirring shaft 5. The stirring motor 7 is electrically connected to the frequency converter in the control device through a cable.

[0030] The grinding device includes two grinding rollers 8, which are cast from high-chromium cast iron and hardened to a hardness of HRC55-60. The two grinding rollers 8 are arranged in parallel and spaced apart. Both ends of the grinding rollers 8 are mounted on the frame 1 via bearings. The two grinding rollers 8 are equipped with baffle plates 9, which are installed on the inner side of the frame 1. The journals of the grinding rollers 8 pass through the bearings and extend to the outer side.

[0031] Furthermore, the outer surface of the grinding roller 8 is coated with a ceramic wear-resistant coating with a thickness of 0.3-0.5mm by plasma spraying. The coating material is alumina ceramic, the bonding strength is not less than 50MPa, and the surface roughness is controlled at Ra0.8-1.6μm.

[0032] The power unit is a drive motor 10, which is a three-phase asynchronous motor with a power of 3-7.5kW. A flexible pin coupling is installed at the output shaft end of the motor. The power unit is connected to the journals of the two grinding rollers 8 through a transmission assembly, and is used to drive the two grinding rollers 8 to rotate relative to each other.

[0033] Furthermore, the transmission assembly includes a drive gear 11, a first driven gear 12, and a second driven gear 13. All gears are forged from 40Cr material, and after tempering, the tooth surfaces are quenched to a hardness of HRC45-50. The output shaft of the drive motor 10 is connected to the drive gear 11. The first driven gear 12 and the second driven gear 13 are respectively fixed to the journals of the two grinding rollers 8. The drive gear 11 meshes with the first driven gear 12, and the first driven gear 12 meshes with the second driven gear 13. The first driven gear 12 and the second driven gear 13 have the same module and number of teeth, ensuring that the two grinding rollers 8 rotate at the same speed but in opposite directions.

[0034] The discharge device is located below the grinding device. The discharge device includes a discharge trough 14 and a discharge pipe 15. Both the discharge trough 14 and the discharge pipe 15 are made of stainless steel. The discharge trough 14 is fixed on the frame 1. The size of the trough is larger than that of the grinding roller 8 to ensure that the material falls normally and stably into the discharge trough 14. The control device is electrically connected to the power device and the flow control valve 4 respectively.

[0035] Furthermore, a filter screen 16 is provided inside the discharge trough 14. The screen is made of stainless steel woven mesh, and the edge of the screen is sealed to the inner wall of the discharge trough 14 by a rubber sealing strip to ensure the comprehensiveness of the filtration work of the filter screen 16. The filter screen 16 is arranged in a "∧" shape in the discharge trough 14, and an impurity cleaning port is provided at the lower end. A movable baffle is installed at the cleaning port, which can ensure normal filtration work and prevent impurities from clogging the filter screen 16.

[0036] Furthermore, a protective door 17 is installed on the outside of the grinding device on the frame 1 via a hinge, which effectively protects the grinding device. The protective door 17 is equipped with an observation window 18 for easy observation of the working status of the grinding device.

[0037] Furthermore, the control device includes a control panel and a controller. The control panel has a start button, a stop button, and a speed control knob, which is a multi-turn potentiometer with graduations. The controller is a PLC programmable logic controller, model S7-200SMART, equipped with a 16-point input / 16-point output module. The controller is electrically connected to the start button, stop button, speed control knob, power unit, and flow control valve 4.

[0038] Specifically, before use, check that the equipment is functioning properly. Pour the phenolic resin coating into the feed hopper 2 using the feed pump or manually, ensuring the coating level does not exceed 2 / 3 of the height of the feed hopper 2. Connect the main power supply to the equipment; the power indicator light on the control panel will illuminate. Preset the speed of the drive motor 10 using the speed control knob, and adjust the speed of the stirring motor 7 according to the viscosity of the coating.

[0039] Press the start button on the control panel. The controller outputs a signal to start the drive motor 10 and the stirring motor 7 simultaneously. The drive motor 10 drives the two grinding rollers 8 to rotate at a constant speed in opposite directions through the transmission assembly. The stirring motor 7 drives the stirring shaft 5 and the stirring blades 6 to rotate, stirring the paint in the feed hopper 2 to prevent solid particles in the paint from settling. Slowly open the flow control valve 4 and observe the paint feeding through the observation window 18. Adjust the valve opening to ensure that the paint enters evenly between the two grinding rollers 8, controlling the feed rate to ensure that the paint forms a stable film between the grinding rollers 8.

[0040] After the paint enters between the grinding rollers 8, the agglomerated particles are broken and refined under the shearing, extruding, and frictional forces of the two counter-rotating grinding rollers 8. The ground paint then falls from between the grinding rollers 8 into the discharge trough 14 below under the influence of gravity. During the flow of the paint in the discharge trough 14, it is filtered through the filter screen 16. Coarse particles that have not been sufficiently ground are trapped on the screen, while qualified paint flows into the receiving container through the discharge pipe 15.

[0041] During equipment operation, operators can monitor the grinding process in real time through observation window 18 and observe motor load changes through the ammeter. If abnormal sounds or vibrations are detected, the emergency stop button should be pressed immediately to stop the machine and inspect it. When a large amount of impurities accumulate on the filter screen 16, the machine can be stopped and the impurity cleaning port baffle opened to sweep the impurities out of the screen.

[0042] After production is completed, first close the flow control valve 4. After all the paint in the feed hopper 2 has entered the grinding device and completed grinding, press the stop button to stop the equipment and disconnect the main power supply. Open the protective door 17, use a special tool to clean the residual paint on the surface of the grinding roller 8, open the impurity cleaning port of the discharge chute 14, thoroughly clean the impurities on the screen, add lubricating oil to each lubrication point, and perform equipment cleaning and maintenance.

[0043] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An abrasive mill for producing phenolic resin coatings, characterized in that: Includes a frame (1), on which a feeding device, a grinding device and a discharging device are provided, a power device is installed on one side of the frame (1), and a control device is provided on the frame (1); The feeding device includes a feeding hopper (2) and a feeding pipe (3). The feeding hopper (2) is installed above the frame (1). One end of the feeding pipe (3) is connected to the bottom of the feeding hopper (2), and the other end extends to the top of the grinding device. A flow control valve (4) is installed on the feeding pipe (3). The grinding device includes two grinding rollers (8), which are parallel and spaced apart. Both ends of the grinding rollers (8) are mounted on the frame (1) by bearings. The two grinding rollers (8) are provided with baffles (9), which are installed on the inner side of the frame (1). The journals of the grinding rollers (8) pass through the bearings and extend to the outer side. The power unit is connected to the journal of the two grinding rollers (8) via a transmission assembly, and is used to drive the two grinding rollers (8) to rotate relative to each other; The discharge device is located below the grinding device, and the control device is electrically connected to the power device and the flow control valve (4).

2. The abrasive mill for producing phenolic resin coatings according to claim 1, characterized in that: The feed hopper (2) is equipped with a stirring assembly, which includes a stirring shaft (5) and stirring blades (6). The stirring shaft (5) is vertically arranged inside the feed hopper (2), and the stirring blades (6) are fixed on the stirring shaft (5). A stirring motor (7) is installed on the top of the feed hopper (2). The output shaft of the stirring motor (7) is connected to the top of the stirring shaft (5), and the stirring motor (7) is electrically connected to the control device.

3. The abrasive mill for producing phenolic resin coatings according to claim 1, characterized in that: The outer surface of the grinding roller (8) is provided with a wear-resistant coating, which is a ceramic coating.

4. The abrasive mill for producing phenolic resin coatings according to claim 1, characterized in that: The transmission assembly includes a drive gear (11), a first driven gear (12), and a second driven gear (13). The power device is a drive motor (10). The output shaft of the drive motor (10) is connected to the drive gear (11). The first driven gear (12) and the second driven gear (13) are respectively fixed on the journals of two grinding rollers (8). The drive gear (11) meshes with the first driven gear (12), and the first driven gear (12) meshes with the second driven gear (13).

5. The abrasive mill for producing phenolic resin coatings according to claim 1, characterized in that: The discharge device includes a discharge trough (14) and a discharge pipe (15). The discharge trough (14) is located below the two grinding rollers (8). One end of the discharge pipe (15) is connected to the bottom of the discharge trough (14), and the other end extends to the outside of the frame (1).

6. The abrasive mill for producing phenolic resin coatings according to claim 5, characterized in that: The discharge trough (14) is equipped with a filter screen (16), which is arranged in a "∧" shape inside the discharge trough (14).

7. The abrasive mill for producing phenolic resin coatings according to claim 1, characterized in that: The frame (1) is provided with a protective door (17) on the outside of the grinding device, and the protective door (17) is provided with an observation window (18).

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