Three-roll grinder semi-automatic feeding device

Abstract

This utility model relates to the field of feeding equipment technology and provides a semi-automatic feeding device for a three-roll mill, comprising: a mill with three grinding rollers inside, a feed inlet at the top of the mill; a receiving plate at the bottom of each grinding roller to receive material between the grinding rollers, a discharge outlet at the end of the receiving plate away from the mill's discharge outlet, and a storage box at the bottom of the mill below the discharge outlet. The storage box is connected to the feed inlet via a pipe, and a feeding pump is installed in the middle of the pipe. This utility model receives material leaking from the bottom of the grinding rollers, collects it inside the box, and when a certain amount is collected, automatically injects the material from inside the box back into the mill's feed inlet using the feeding pump, thus completing the automatic feeding process.

Description

Technical Field

[0001] This utility model relates to the field of feeding equipment technology, and in particular to a semi-automatic feeding device for a three-roll mill. Background Technology

[0002] Three-roll mills, also known as three-roll grinding mills, are mainly used in the manufacture of various paints, inks, pigments, and other pastes. They thoroughly mix solid and liquid materials in raw materials and are particularly suitable for grinding and dispersing products with high viscosity and fine particle size requirements. The grinding effect is achieved through the mutual extrusion and friction at different speeds of the surfaces of three horizontal rollers.

[0003] Currently, the three-roll mill commonly used in production mainly consists of an iron frame and three rollers mounted on the bearing seats at the top of the frame. During use, workshop operators need to continuously add slurry to the three-roll mill for continuous production. At the same time, they need to adjust the grinding frequency according to the characteristics of the slurry to achieve the required fineness and other indicators.

[0004] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] To address the aforementioned deficiencies, the purpose of this utility model is to provide a semi-automatic feeding device for a three-roll mill. This device can collect the material that leaks from the bottom of the grinding rollers, collect it inside the housing, and when a certain amount is collected, automatically inject the material inside the housing back into the feed inlet of the mill using a feeding pump, thus completing the automatic feeding process.

[0006] To achieve the above objectives, this utility model provides a semi-automatic feeding device for a three-roll mill, comprising: a mill with three grinding rollers inside, a feed inlet at the top of the mill; a receiving plate at the bottom of each grinding roller to receive material between the grinding rollers, a discharge outlet at the end of the receiving plate away from the discharge outlet of the mill, a storage tank at the bottom of the mill located below the discharge outlet, the storage tank being connected to the feed inlet via a pipe and a feeding pump located in the middle of the pipe.

[0007] In one embodiment, the storage tank is equipped with a liquid level sensor. When the liquid level sensor reaches a high value, the feed pump pumps the material inside the storage tank into the inlet. When the liquid level sensor reaches a low value, the feed pump stops operating.

[0008] In one embodiment, the receiving plate is set at a certain inclined angle, and the discharge port of the receiving plate is at the lowest point.

[0009] In one embodiment, a scraper is slidably connected to the top of the receiving plate. The scraper includes a sliding shaft slidably connected to the receiving plate and a scraper rotatably connected to the end of the sliding shaft in one direction. The scraper stops rotating and its bottom is in close contact with the top surface of the receiving plate when sliding down to the material outlet. The scraper rotates when moving away from the material outlet.

[0010] In one embodiment, the end of the sliding shaft is provided with a limiting part, and when the scraper abuts against the limiting part, the bottom surface is in close contact with the top surface of the receiving plate.

[0011] In one embodiment, the receiving plate is surrounded by baffles, the receiving plate is provided with mounting shafts on both sides, and the inner walls of both sides of the receiving plate are provided with sliding grooves for the scraper to slide.

[0012] In one embodiment, the discharge end of the grinding mill is provided with a material guide plate, and the inner side of the material guide plate is provided with a side wall that is in close contact with the corresponding grinding roller.

[0013] This utility model provides a semi-automatic feeding device for a three-roll mill, comprising: a mill with three grinding rollers inside for grinding materials such as paint; a feed inlet at the top of the mill to ensure that the material to be ground can be directly injected between the grinding rollers for grinding the paint; and a receiving plate at the bottom of each grinding roller to collect material falling from the bottom of the grinding rollers for subsequent processing. For the second grinding, the receiving plate has a discharge port at the end away from the discharge port of the grinder. The material collected by the receiving plate is discharged directly through the discharge port. The bottom of the grinder is located at the bottom of the discharge port and has a storage box. The received material enters the storage box through the discharge port to temporarily store the material. The storage box is connected to the feed port through a pipe and a feed pump is installed in the middle of the pipe. After the material in the storage box reaches a certain level, the feed pump will pump the material in the storage box to the feed port to complete the secondary feeding. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of one side of the storage box of this utility model;

[0015] Figure 2 This is a three-dimensional structural diagram of one side of the material guide plate of this utility model;

[0016] Figure 3 This is a cross-sectional structural schematic diagram of the present invention;

[0017] Figure 4 This is a cross-sectional three-dimensional structural schematic diagram of the present invention;

[0018] Figure 5 yes Figure 4 Enlarged structural diagram of section A;

[0019] Figure 6 This is a three-dimensional structural diagram of the receiving plate of this utility model;

[0020] In the diagram, 1-storage box, 2-pipe, 3-feed inlet, 4-grinding machine, 5-grinding roller, 6-material guide plate, 61-scraping part, 7-receiving plate, 71-sliding groove, 72-installation shaft, 73-discharge port, 8-scraping component, 81-scraper, 82-rotating sleeve, 83-sliding shaft. Detailed Implementation

[0021] 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 scope of protection of the present utility model.

[0022] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0023] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0024] See Figure 1 , Figure 2 , Figure 3 and Figure 6This utility model provides a semi-automatic feeding device for a three-roll mill. The device includes a mill 4 with three grinding rollers 5 inside, used for grinding materials such as paint. The top of the mill 4 has a feed inlet 3, allowing the material to be ground to be directly injected between the grinding rollers 5 for grinding. The bottom of each grinding roller 5 has a receiving plate 7 to collect material falling from the bottom of the rollers, ensuring efficient material collection. For subsequent re-grinding, the receiving plate 7 has a discharge port 73 at the end away from the discharge port of the grinder 4. The material collected by the receiving plate 7 is discharged directly through the discharge port 73. The bottom of the grinder 4 is located at the bottom of the discharge port 73 and has a storage box 1. The received material enters the interior of the storage box 1 through the discharge port 73 to complete the temporary storage of the material. The storage box 1 is connected to the feed port 3 through a pipe 2 and a feed pump is installed in the middle of the pipe 2. After the material in the storage box 1 is stored to a certain extent, the feed pump will pump the material in the storage box 1 to the interior of the feed port 3 to complete the secondary feeding.

[0025] In one embodiment of this example, in order to ensure automatic feeding of materials inside the storage tank 1, a liquid level sensor can be installed inside the storage tank 1. When the liquid level sensor reaches a high value, that is, when the liquid level sensor reaches the maximum controlled liquid level, the feeding pump can be controlled to run by forming a switch or triggering a switch, and the materials inside the storage tank 1 can be pumped into the feed inlet 3, thereby drawing the materials at the bottom to the feed inlet 3 to complete the secondary feeding and grinding process. When the liquid level sensor reaches a low value, the materials inside the storage tank 1 have been basically extracted, and the feeding pump can be stopped by switching the switch on and off, and no more materials are extracted from the inside.

[0026] Additionally, see Figure 6 In order to ensure that the material on the receiving plate 7 can be automatically discharged from the discharge port 73, the receiving plate 7 is set at a certain angle. The discharge port 73 of the receiving plate 7 is at the lowest point. Since the material is a fluid structure, under the action of its own gravity, the material flows directly into the position of the discharge port 73 and is discharged from the discharge port 73.

[0027] In one embodiment, combined with Figure 4 and Figure 5To ensure that all material on the receiving plate 7 is discharged, a scraper 8 is slidably connected to the top of the receiving plate 7. The scraper 8 includes a sliding shaft 83 slidably connected to the receiving plate 7 and a scraper 81 unidirectionally rotatably connected to the end of the sliding shaft 83. The scraper 81 stops rotating when sliding down to the feed inlet 73 and its bottom is in close contact with the top surface of the receiving plate 7. This ensures that the material on the top surface of the receiving plate 7 is scraped to the position of the feed inlet 73 by the scraper 81, thereby ensuring that all material can be discharged from the top of the receiving plate 7 under the action of the scraper 81. The scraper 81 rotates when moving away from the feed inlet 73, thereby ensuring that the scraper 81 does not exert force on the material when moving back, thus preventing the material from accumulating at the rear end of the tube plate and affecting the normal discharge process.

[0028] In an exemplary embodiment of this example, the end of the sliding shaft 83 is provided with a limiting part. When the scraper 81 abuts against the limiting part, the bottom surface is in close contact with the top surface of the receiving plate 7, ensuring that the scraper 81 can be restricted by force when it moves to scrape the material, so that the scraping force of the scraper 81 can scrape the material. The receiving plate 7 is surrounded by baffles to block the material on the top of the receiving plate 7 and prevent the material from leaking from the edge of the receiving plate 7. The receiving plate 7 is provided with mounting shafts 72 on both sides. The inner walls of both sides of the receiving plate 7 are provided with sliding grooves 71 for the scraper 81 to slide. The position of the scraper 81 is restricted by the sliding grooves 71. At the same time, the top of the scraper 81 is provided with a rotating sleeve 82, which is rotatably connected to the front end of the sliding shaft 83, thereby ensuring the installation of the scraper 81 and the scraping force.

[0029] Furthermore, the discharge end of the grinding mill 4 is provided with a material guide plate 6. The inner side of the material guide plate 6 is provided with a side wall that is in close contact with the corresponding grinding roller 5. By scraping the material from the grinding roller 5 through the scraping part 61 that is in close contact with the grinding roller 5, the material of the grinding roller 5 is scraped off, thereby completing the scraping and guiding of the material.

[0030] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A semi-automatic feeding device for a three-roll mill, characterized in that, include: The grinding mill has three grinding rollers inside, and a feed inlet is located at the top of the grinding mill; The bottom of the grinding roller is provided with a receiving plate to receive the material between the grinding rollers. The end of the receiving plate away from the discharge port of the grinding machine is provided with a discharge port. The bottom of the grinding machine is provided with a storage box at the bottom of the discharge port. The storage box is connected to the feed port through a pipe and a feed pump is provided in the middle of the pipe.

2. The semi-automatic feeding device for three-roll mills according to claim 1, characterized in that The storage tank is equipped with a liquid level sensor. When the liquid level sensor reaches a high value, the feed pump pumps the material inside the storage tank into the inlet. When the liquid level sensor reaches a low value, the feed pump stops running.

3. The semi-automatic feeding device for a three-roll mill according to claim 1, characterized in that, The receiving plate is set at a certain inclined angle, and the discharge port of the receiving plate is at the lowest point.

4. The semi-automatic feeding device for a three-roll mill according to claim 3, characterized in that, A scraper is slidably connected to the top of the receiving plate. The scraper includes a sliding shaft slidably connected to the receiving plate and a scraper rotatably connected to the end of the sliding shaft in one direction. The scraper stops rotating and its bottom is in close contact with the top surface of the receiving plate when it slides down to the material outlet. The scraper rotates when it moves away from the material outlet.

5. The semi-automatic feeding device for a three-roll mill according to claim 4, characterized in that, The end of the sliding shaft is provided with a limiting part, and when the scraper abuts against the limiting part, the bottom surface is in close contact with the top surface of the receiving plate.

6. The semi-automatic feeding device for a three-roll mill according to claim 4, characterized in that, The receiving plate is surrounded by baffles, and the receiving plate is provided with mounting shafts on both sides. The inner walls of both sides of the receiving plate are provided with sliding grooves for the scraper to slide.

7. The semi-automatic feeding device for a three-roll mill according to claim 1, characterized in that, The grinding mill has a material guide plate at one end of the discharge end, and the inner side of the material guide plate has a side wall that is in close contact with the corresponding grinding roller.

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