Horizontal closed sand mill for fireproof coating production

Abstract

The utility model belongs to the field of fireproof coating production, and discloses a horizontal closed sand mill for fireproof coating production, which comprises a main body device for accommodating coatings and grinding the coatings in sections, and a discharging device for screening out target coatings is mounted on one side of the main body device. The four circulating assemblies are uniformly arranged on the main body device and are used for circularly grinding a backflow coating; the circulating assembly comprises two conveying pipes symmetrically arranged on the two sides, and conveying blades are rotationally installed in the conveying pipes. According to the horizontal closed sand mill for producing the fireproof coating, through the arrangement of the backflow coating, the coating at a filtering position is continuously conveyed in a backflow mode, and blockage caused by the fact that the coating is accumulated at the filtering position is avoided; through the arrangement of four-channel backflow, the backflow speed and the backflow effect are improved; and through the arrangement of backflow coating circulating grinding, the contact probability of the coating and a grinding medium is increased, and the grinding speed and effect are improved.

Description

Technical Field

[0001] The utility model belongs to the field of fire retardant coating production, in particular to a horizontal closed sand mill for the production of fire retardant coating. Background Art

[0002] Fire retardant coatings are applied to the surface of a material to improve its fire resistance, slow the spread of flames, or prevent combustion for a certain period of time. These coatings are called fire retardants or flame retardants. Fire retardant coatings are special coatings used on combustible substrates to reduce their flammability, slow the spread of fire, and improve their fire resistance. Fire retardant coatings are applied to combustible substrates to alter their surface combustion characteristics and slow the spread of fire, or to building components to improve their fire resistance. The production process of fire retardant coatings requires a sand mill to grind the raw materials. A sand mill uses a pump to feed a solid-liquid mixture pre-dispersed and wetted in a mixer into a drum. The material and the grinding media in the drum are agitated by a high-speed disperser, creating more intense collision, friction, and shear between the solid particles and the grinding media, accelerating the grinding of fine particles and dispersing aggregates.

[0003] In comparison, the Chinese patent with authorization announcement number CN218962824U discloses a grinding structure of a paint horizontal sand mill, including: a grinder body and a shroud, one side of the shroud is fixedly connected to a crushing barrel, and the other side of the shroud is fixedly installed with a motor, the output end of the motor is fixedly connected to a transmission shaft through a coupling, the outer wall of the transmission shaft is fixedly connected to a centrifugal turbine, and the centrifugal turbine is located inside the shroud, the outer wall of the transmission shaft is fixedly installed with a disturbance mechanism, the outer wall of the transmission shaft is rotatably connected to a first partition, the inner wall of the first partition is fixedly installed with a first sieve plate, and the outer wall of the transmission shaft is rotatably connected to a second partition.

[0004] In the above patent, the paint is continuously transported to the filter at the outlet during grinding, which can easily cause the paint particles to be pushed to the outlet before they are evenly ground, causing the filter at the outlet to be blocked. Therefore, a new device needs to be designed. Utility Model Content

[0005] The purpose of the utility model is to provide a horizontal closed sand mill for producing fire retardant coatings to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A horizontal closed sand mill for producing fire retardant coatings, comprising a main body for containing and grinding the coating in sections, a discharge device for screening out target coatings mounted on one side of the main body, and four circulation assemblies evenly arranged on the main body for circulatory grinding of the refluxed coatings;

[0008] The circulation component includes two conveying pipes symmetrically arranged on both sides, conveying blades are rotatably installed in the conveying pipes, a connecting shaft is installed between the two conveying blades, a conveying motor is installed on one end of the conveying blade away from the connecting shaft, and suction pipes and return pipes are symmetrically arranged on both sides of the conveying pipes.

[0009] Furthermore: the main device includes a main unit, a crushing cylinder is arranged above the main unit, eight legs are evenly arranged between the crushing cylinder and the main unit, a feed pipe is arranged on one side of the top of the crushing cylinder, a rotating motor is arranged below the feed pipe, a main shaft is arranged on the side of the rotating motor close to the crushing cylinder, a number of dispersion disks are arranged on the main shaft, and a partition net is arranged in the middle of the crushing cylinder.

[0010] Furthermore: the discharging device includes a discharging net, a discharging cylinder is provided on one side of the discharging net, and a discharging pipe is installed on the top of the discharging cylinder.

[0011] Furthermore: a screen is provided on the top of the suction pipe and the top of the return pipe.

[0012] Furthermore, eight dispersion discs are provided and symmetrically distributed on both sides of the partition net.

[0013] Furthermore: the discharge net is cylindrical in shape and is made of 304 stainless steel.

[0014] Compared with the prior art, the beneficial effects are:

[0015] 1. Through the setting of reflux paint, the paint at the filter is continuously refluxed and transported, avoiding its accumulation at the filter and causing blockage;

[0016] 2. The four-channel reflux setting improves the reflux speed and reflux effect;

[0017] 3. The setting of reflux paint circulation grinding increases the contact probability between paint and grinding medium, and improves the grinding speed and effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of a horizontal closed sand mill for producing fire retardant coatings described in the utility model;

[0019] Figure 2 This is an axonometric drawing of the main device of a horizontal closed sand mill for producing fire retardant coatings described in the utility model;

[0020] Figure 3 This is a front sectional view of the discharging device of a horizontal closed sand mill for producing fire retardant coatings described in the utility model;

[0021] Figure 4 It is an axonometric drawing of a circulation component of a horizontal closed sand mill for producing fire retardant coatings described in the utility model.

[0022] In the accompanying drawings: 101, main machine; 102, support legs; 103, crushing barrel; 104, feed pipe; 105, rotating motor; 106, main shaft; 107, dispersion disk; 108, partition net; 201, discharge net; 202, discharge barrel; 203, discharge pipe; 301, conveying pipe; 302, conveying blades; 303, suction pipe; 304, return pipe; 305, screen; 306, connecting shaft; 307, conveying motor. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figures 1-4 A horizontal closed sand mill for the production of fire-retardant coatings includes a main device for containing the coating and grinding the coating in sections, a discharge device for screening out the target coating is installed on one side of the main device, and four circulation components evenly arranged on the main device for reflux coating circulation grinding.

[0025] In this embodiment, the main device includes a main unit 101, a crushing cylinder 103 is provided above the main unit 101, eight legs 102 are evenly arranged between the crushing cylinder 103 and the main unit 101, a feeding pipe 104 is provided on one side of the top of the crushing cylinder 103, a rotating motor 105 is provided below the feeding pipe 104, a main shaft 106 is provided on the side of the rotating motor 105 close to the crushing cylinder 103, eight dispersion discs 107 are provided on the main shaft 106, a partition 108 is provided in the middle of the crushing cylinder 103, and the dispersion discs 107 are symmetrically distributed on both sides of the partition 108. When grinding, The partition 108 separates the grinding cylinder 103 from the middle to form two grinding spaces. The grinding space on the side close to the feed pipe 104 is the coarse grinding space, and the grinding space on the side away from the feed pipe 104 is the fine grinding space. During operation, the paint is pressed into the grinding cylinder 103. The main machine 101 supports the rotating motor 105 on one side of the grinding cylinder 103 through the support legs 102 to drive the main shaft 106 to drive the dispersion disk 107 to rotate, so that the grinding medium in the coarse grinding space coarsely grinds the paint, and the paint that meets the requirements passes through the partition 108 into the fine grinding space for grinding, and finally the paint is ground into the target particle size.

[0026] In this embodiment: the discharging device includes a discharging net 201, a discharging cylinder 202 is provided on one side of the discharging net 201, and a discharging pipe 203 is installed on the top of the discharging cylinder 202. The discharging net 201 is cylindrical in shape and made of 304 stainless steel. The paint of the target particle size enters the discharging cylinder 202 through the discharging net 201 and is discharged from the discharging pipe 203;

[0027] In this embodiment, the circulation component includes two conveying pipes 301 symmetrically arranged on both sides, a conveying blade 302 is rotatably installed in the conveying pipe 301, a connecting shaft 306 is installed between the two conveying blades 302, a conveying motor 307 is installed on one end of the conveying blade 302 away from the connecting shaft 306, a suction pipe 303 and a return pipe 304 are symmetrically arranged on both sides of the conveying pipe 301, a screen 305 is provided on the top of the suction pipe 303 and the return pipe 304, and the conveying motor 307 drives the two conveying blades 302 to rotate synchronously through the connecting shaft 306, so that the coarse grinding space The paint near the partition 108 is sucked into the delivery pipe 301 through the suction pipe 303 and is sent to the starting end of the coarse grinding space through the return pipe 304. The paint near the discharge net 201 in the fine grinding space is sucked into the delivery pipe 301 through the suction pipe 303 and is sent to the starting end of the fine grinding space through the return pipe 304, so as to prevent the paint from accumulating on the partition 108 and the discharge net 201 following the liquid flow and preventing the two from being blocked. At the same time, the paint that continuously flows back will be circulated and ground by the grinding medium, thereby improving the grinding speed and effect. The setting of the screen 305 prevents the grinding medium from entering the delivery pipe 301.

[0028] Working principle: Connect the feed pipe 104 to the external paint input pipe, and the discharge pipe 203 to the external paint output pipe; during grinding, the partition 108 separates the grinding cylinder 103 from the middle to form two grinding spaces, the grinding space close to the feed pipe 104 is the coarse grinding space, and the grinding space away from the feed pipe 104 is the fine grinding space; during operation, the paint is pressed into the grinding cylinder 103, and the main machine 101 supports the rotating motor 105 on one side of the grinding cylinder 103 through the support legs 102 to drive the main shaft 106 to drive the dispersion plate 107 to rotate, so that the grinding medium in the coarse grinding space coarsely grinds the paint, and the paint that meets the requirements enters the fine grinding space through the partition 108 for grinding, and finally the paint is ground into the target particle size and enters through the discharge net 201 The paint is discharged from the discharge cylinder 202 and discharged from the discharge pipe 203; during this process, the conveying motor 307 synchronously drives the two conveying blades 302 to rotate through the connecting shaft 306, so that the paint in the coarse grinding space near the partition 108 is sucked into the conveying pipe 301 through the suction pipe 303, and is sent to the starting end of the coarse grinding space through the return pipe 304, and the paint in the fine grinding space near the discharge net 201 is sucked into the conveying pipe 301 through the suction pipe 303, and is sent to the starting end of the fine grinding space through the return pipe 304, avoiding the paint from following the liquid flow and accumulating on the partition 108 and the discharge net 201 to prevent the two from being blocked. At the same time, the continuously refluxed paint will be circulated and ground by the grinding medium, thereby improving the grinding speed and effect; the setting of the screen 305 avoids the grinding medium from entering the conveying pipe 301.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A horizontal closed sand mill for producing fire retardant coatings, comprising a main device for containing coatings and grinding the coatings in sections, a discharging device for screening out target coatings is installed on one side of the main device, and is characterized in that: It also includes four circulation components evenly arranged on the main device for circulating and grinding the reflow paint; The circulation component comprises two conveying pipes (301) symmetrically arranged on both sides, a conveying blade (302) is rotatably installed in the conveying pipe (301), a connecting shaft (306) is installed between the two conveying blades (302), a conveying motor (307) is installed at one end of the conveying blade (302) away from the connecting shaft (306), and a suction pipe (303) and a return pipe (304) are symmetrically arranged on both sides of the conveying pipe (301).

2. The horizontal closed sand mill for producing fire retardant coating according to claim 1, characterized in that: The main device comprises a main machine (101), a crushing cylinder (103) is arranged above the main machine (101), eight legs (102) are evenly arranged between the crushing cylinder (103) and the main machine (101), a feeding pipe (104) is arranged on one side of the top of the crushing cylinder (103), a rotating motor (105) is arranged below the feeding pipe (104), a main shaft (106) is arranged on the side of the rotating motor (105) close to the crushing cylinder (103), a plurality of dispersion discs (107) are arranged on the main shaft (106), and a partition net (108) is arranged in the middle of the crushing cylinder (103).

3. The horizontal closed sand mill for producing fire retardant coating according to claim 1, characterized in that: The discharging device comprises a discharging net (201), a discharging cylinder (202) is arranged on one side of the discharging net (201), and a discharging pipe (203) is installed on the top of the discharging cylinder (202).

4. The horizontal closed sand mill for producing fire retardant coating according to claim 1, characterized in that: The tops of the suction pipe (303) and the return pipe (304) are both provided with screens (305).

5. The horizontal closed sand mill for producing fire retardant coating according to claim 2, characterized in that: There are eight dispersion discs (107) provided and symmetrically distributed on both sides of the partition net (108).

6. The horizontal closed sand mill for producing fire retardant coating according to claim 3, characterized in that: The discharge net (201) is cylindrical in shape and is made of 304 stainless steel.

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