Polishing sand blasting machine for silicon nitride and silicon carbide combined bricks

Abstract

The utility model discloses a polishing sand-blasting machine for silicon nitride and silicon carbide combined bricks, which comprises a sand-blasting chamber, dust-settling chambers are arranged on both sides of the sand-blasting chamber, dustproof curtains are arranged at inlets and outlets of the sand-blasting chamber and the dust-settling chambers, collecting structures are arranged at the bottoms of the sand-blasting chamber and the dust-settling chambers, and a rolling conveyor belt penetrates through the sand-blasting chamber and the dust-settling chambers. The sand blasting chamber and the dust settling chamber are connected through a connecting pipe, two groups of sand blasting guns with opposite openings are mounted in the sand blasting chamber, are respectively positioned on the upper side and the lower side of the rolling conveying belt, are arranged in a staggered manner and are obliquely arranged in parallel, and a negative-pressure dust removal structure is arranged at the top of the sand blasting chamber. According to the device, multiple faces of a brick body can be ground at a time, the grinding efficiency is high, the quality is good, only a very small amount of dust overflows in the grinding process, the influence on the surrounding environment and equipment is small, the equipment can continuously operate, the operation state is stable, the operation condition is good, and the burnt brick body can be rapidly treated.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding silicon nitride bonded silicon carbide bricks, in particular to a grinding and sandblasting machine for silicon nitride bonded silicon carbide bricks. Background Art

[0002] Silicon nitride bonded silicon carbide bricks are a new type of high-quality refractory material, which is widely used in blast furnace linings and electrolytic aluminum cell linings. They have the characteristics of high temperature resistance, wear resistance and thermal shock resistance, and relatively low thermal conductivity. They can provide better thermal insulation effects and reduce heat loss in submerged arc furnaces.

[0003] After the bricks are fired from the nitriding furnace, there is an obvious layer of dust and fluff on their surface, which affects the transportation and installation of the bricks. Therefore, the bricks need to be polished. At present, the better polishing method is sandblasting, which can efficiently process large quantities of bricks. However, the polishing of the bricks requires polishing all six sides of the brick surface, and the amount of dust during the polishing process is much greater than the amount of dust produced by casting polishing. For this reason, we proposed a grinding and sandblasting machine for silicon nitride combined with silicon carbide bricks to solve the above problems. Utility Model Content

[0004] The present application provides a grinding and sandblasting machine for silicon nitride bonded silicon carbide bricks, which solves the problem of grinding multiple surfaces of a brick body at one time and preventing dust.

[0005] The present application provides a grinding and sandblasting machine for silicon nitride bonded silicon carbide bricks, comprising a sandblasting chamber, dust reduction chambers are provided on both sides of the sandblasting chamber, dust-proof curtains are provided at the entrances and exits of the sandblasting chamber and the dust reduction chamber, a collection structure is provided at the bottom of the sandblasting chamber and the dust reduction chamber, a rolling conveyor belt passes through the sandblasting chamber and the dust reduction chamber, the sandblasting chamber and the dust reduction chamber are connected by a connecting pipe, two groups of sandblasting guns with openings facing each other are installed in the sandblasting chamber, the two groups of sandblasting guns are respectively located on the upper and lower sides of the rolling conveyor belt, the two groups of sandblasting guns are staggered, and the two groups of sandblasting guns are parallel and inclined, and a negative pressure dust removal structure is provided on the top of the sandblasting chamber.

[0006] Preferably, the collecting structure comprises a collecting bin installed at the bottom of the sandblasting chamber and the dust reduction chamber, and a collecting funnel is installed at the bottom of the collecting bin.

[0007] Preferably, the negative pressure dust removal structure includes a first dust hood installed on the top of the sandblasting chamber, one side of the first dust hood is connected to a dust collector pipe, and the dust collector pipe is connected to the negative pressure dust removal equipment.

[0008] Preferably, the sandblasting gun is installed in the sandblasting chamber through a mounting plate, and the sandblasting gun is swung by a swing mechanism.

[0009] Preferably, the swing mechanism includes a joystick located on one side of the sandblasting gun, the two ends of the joystick respectively pass through the two end side walls of the sandblasting chamber, a reciprocating motor is installed on one side of the sandblasting chamber, one end of the joystick is connected to the reciprocating motor, the joystick is located on one side of the sandblasting gun and a limiting groove is provided, a limiting rod is fixed on one side of the sandblasting gun, and the limiting rod is located in the limiting groove.

[0010] Preferably, a second dust collection hood is installed at one end of the connecting pipe located in the dust reduction chamber.

[0011] Preferably, an observation window is further provided on one side of the sandblasting chamber.

[0012] Preferably, the dustproof curtain is made of rubber.

[0013] It can be seen from the above technical solution that the present application provides a grinding and sandblasting machine for silicon nitride bonded silicon carbide bricks. During the grinding process, a robotic arm sends the silicon nitride bonded silicon carbide bricks transported by a conveyor belt or a transfer vehicle to a rolling conveyor belt. The silicon nitride bonded silicon carbide bricks are sent to the sandblasting room through a dust reduction chamber on one side, and two sets of sandblasting guns are swung to grind the brick body. The inclined sandblasting gun can grind the side of the brick body, and the bottom sandblasting gun is located between the two rollers of the rolling conveyor belt to grind the bottom of the brick body. During the grinding process, the dust generated is absorbed by the negative pressure dust removal structure at the top, and the grinding sand falls into the bottom collection structure to realize the first-level sand and dust separation and the first-level dust removal. During the movement of the brick body, some dust will enter the dust reduction chamber and be sucked into the sandblasting room through the negative pressure of the connecting pipe for secondary dust removal. During the whole process, the amount of dust leaked meets the regulations within the factory area, and all surfaces of the brick body are polished at one time with high efficiency and in one go.

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

[0015] 1. Through the inclined and staggered setting of two sets of sandblasting guns, multiple surfaces of the brick body can be sandblasted and polished, achieving polishing without dead angles, improving polishing efficiency and quality, and further improving production efficiency;

[0016] 2. Through the setting of sandblasting room, dust reduction room and negative pressure dust removal structure, secondary dust removal is carried out during the grinding process to reduce dust overflow and reduce the impact of the grinding process on surrounding equipment and personnel.

[0017] To sum up, the present application can grind multiple surfaces of a brick at one time, with high grinding efficiency and good quality. Only a very small amount of dust overflows during the grinding process, and the impact on the surrounding environment and equipment is small. The equipment can operate continuously, and the operating state is stable and the operating condition is good, and the fired bricks can be processed quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of this application, the following is a brief introduction to the drawings required for the implementation cases. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 This is a schematic diagram of the internal structure of a grinding and sandblasting machine for silicon nitride bonded silicon carbide bricks proposed in the present invention;

[0020] Figure 2 This is a schematic diagram of the external structure of a grinding and sandblasting machine for silicon nitride bonded silicon carbide bricks proposed in the present invention;

[0021] Figure 3 This is a schematic diagram of the swing mechanism structure of a grinding and sandblasting machine for silicon nitride bonded silicon carbide bricks proposed in the present invention;

[0022] Figure 4 This is a schematic structural diagram of a sandblasting gun of a grinding and sandblasting machine for silicon nitride bonded silicon carbide bricks proposed in the present invention from a first angle;

[0023] Figure 5 This is a schematic structural diagram of the second angle of a sandblasting gun of a grinding and sandblasting machine for silicon nitride bonded silicon carbide bricks proposed in the present invention.

[0024] In the figure: 1 sandblasting chamber, 2 dust suppression chamber, 3 rolling conveyor belt, 4 dust curtain, 5 connecting pipe, 6 vacuum cleaner pipe, 7 first dust hood, 8 mounting plate, 9 joystick, 10 second dust hood, 11 sandblasting gun, 12 collection chamber, 13 collection funnel, 14 observation window, 15 limit slot, 16 limit rod. DETAILED DESCRIPTION

[0025] In order to enable people skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0026] See also Figure 1-5, a grinding and sandblasting machine for silicon nitride bonded silicon carbide bricks, the application is used for grinding bricks and removing the dust layer on the surface of the bricks, including a sandblasting chamber 1, and dust reduction chambers 2 are provided on both sides of the sandblasting chamber 1. Since a large amount of dust will be generated in the process of grinding silicon nitride bonded silicon carbide bricks, a large amount of dust will overflow from the sandblasting chamber 1, so dust reduction chambers 2 are added on both sides. After the first dust reduction is carried out in the sandblasting chamber 1, the second dust reduction is carried out through the dust reduction chamber 2, so that a better sealing and dust reduction effect can be achieved during the transportation process. The entrances and exits of the sandblasting chamber 1 and the dust reduction chamber 2 are both provided with dust-proof curtains 4. The dust-proof curtains 4 are made of rubber and have certain flexibility, which is convenient for the bricks to enter and exit without affecting the position of the bricks, blocking the entrances and exits, reducing negative pressure loss, and also reducing dust overflow. The bottom of the sandblasting chamber 1 and the dust removal chamber 2 is provided with a collecting structure for collecting some of the settled dust and grinding sand. The rolling conveyor belt 3 passes through the sandblasting chamber 1 and the dust removal chamber 2. In this application, the bricks are transferred by the rolling conveyor belt 3. The gap between the rollers of the rolling conveyor belt 3 can be used to realize the grinding treatment of the bottom of the brick body. The sandblasting chamber 1 and the dust removal chamber 2 are connected by a connecting pipe 5. The negative pressure in the dust removal chamber 2 is realized by the negative pressure at the top of the sandblasting chamber 1, thereby reducing the arrangement of the pipeline. It is worth noting that the negative pressure in the sandblasting chamber 1 in this application must reach a certain pressure. First, it is used for sand and dust separation. Since the amount of dust in the grinding brick body is large, sand and dust separation is required in the initial stage to reduce the separation amount during the subsequent grinding sand reuse, thereby improving the grinding quality of the grinding sand. Second, a certain negative pressure is provided for the dust removal chamber 2 to achieve two The purpose of secondary dust reduction is to reduce dust overflow during the feeding and discharging stages. In order to improve the absorption efficiency, a second dust hood 10 is installed at one end of the connecting pipe 5 located in the dust reduction chamber 2 to achieve a larger absorption surface, thereby reducing dust overflow. In this application, the dust reduction chamber 2 is simultaneously absorbed and removed by the second dust hood 10 and the negative pressure at the entrance and exit of the sandblasting chamber 1. Therefore, the dust removal effect of this application is better, and only very little dust is generated (part of the dust is generated by the bricks during the transportation process). In the sandblasting and grinding link, two groups of sandblasting guns 11 with openings facing each other are installed in the sandblasting chamber 1. The two groups of sandblasting guns 11 are respectively located on the upper and lower sides of the rolling conveyor belt 3, wherein the lower sandblasting gun 11 is located between the two rollers, and the sprayed sand can pass through between the two rollers. The two groups of sandblasting guns 11 are staggered. During the swinging process, the sandblasting guns 11, such as Figure 5 As shown, the side of the brick body can be polished, and the two sets of sandblasting guns 11 are arranged in parallel and tilted, as shown in FIG. Figure 4As shown, both ends of the brick body can be polished, so that the brick body can be polished in all directions without dead angles, and the polishing work of the brick body can be completed in one time. It is worth noting that before starting the machine, it is necessary to determine the position of the nozzle, the sandblasting direction and the corresponding placement position of the brick body, so as to achieve the polishing of each surface. A negative pressure dust removal structure is set on the top of the sandblasting chamber 1. In this application, the negative pressure dust removal structure is located at the top of this application, which can achieve the purpose of sand and dust separation. The top is set to prevent the polishing sand from being easily inhaled, so the negative pressure dust removal structure can be directly connected to the dust removal equipment in the factory.

[0027] In the present invention, the collection structure includes a collection bin 12 installed at the bottom of the sandblasting chamber 1 and the dust reduction chamber 2. A collection funnel 13 is installed at the bottom of the collection bin 12. Part of the settled dust and grinding sand remains in the collection funnel 13 and is transported to the configuration unit through a pipeline for re-grinding. For details, please refer to the prior art. The collection funnel 13 of this application can also be used as a temporary storage warehouse for grinding sand.

[0028] In the utility model, the negative pressure dust removal structure includes a first dust hood 7 installed on the top of the sandblasting chamber 1. The first dust hood 7 is set as a prism and is a certain distance away from the sandblasting gun 11. It can reduce the suction of sand while collecting dust. A vacuum cleaner pipe 6 is connected to one side of the first dust hood 7, and the vacuum cleaner pipe 6 is connected to the negative pressure dust removal equipment.

[0029] In the present invention, the sandblasting gun 11 is installed in the sandblasting chamber 1 through the mounting plate 8. The sandblasting gun 11 swings through the swing mechanism. During the sandblasting process, the sandblasting gun 11 swings back and forth in the vertical direction of the brick movement to achieve a comprehensive grinding effect.

[0030] In the present utility model, the swing mechanism includes a joystick 9 located on one side of the sandblasting gun 11, and the two ends of the joystick 9 respectively penetrate the two end side walls of the sandblasting chamber 1, and the joystick 9 can move back and forth in the sandblasting chamber 1. A reciprocating motor is installed on one side of the sandblasting chamber 1, and one end of the joystick 9 is connected to the reciprocating motor. The joystick 9 is located on one side of the sandblasting gun 11 and is provided with a limit slot 15. The two ends of the limit slot 15 are penetrated. A limit rod 16 is fixed on one side of the sandblasting gun 11, and the limit rod 16 is located in the limit slot 15. During the reciprocating movement of the joystick 9, the limit rod 16 is driven to swing back and forth through the limit slot 15, thereby driving the sandblasting gun 11 to swing back and forth.

[0031] It can be seen from the above technical scheme that during the grinding process, a robotic arm sends the silicon nitride bonded silicon carbide bricks transported by the conveyor belt or transfer vehicle to the rolling conveyor belt 3, and the silicon nitride bonded silicon carbide bricks are sent to the sandblasting room 1 through the dust reduction chamber 2 on one side, and two groups of sandblasting guns 11 are swung to grind the brick body, wherein the inclined sandblasting gun 11 can grind the side of the brick body, and the bottom sandblasting gun 11 is located between the two rollers of the rolling conveyor belt 3 to grind the bottom of the brick body. During the grinding process, the dust generated is absorbed by the negative pressure dust removal structure at the top, and the grinding sand falls into the bottom collection structure to realize the first-level sand and dust separation and the first-level dust removal. During the movement of the brick body, some dust will enter the dust reduction chamber 2 and be sucked into the sandblasting room 1 through the negative pressure of the connecting pipe 5 for secondary dust removal. During the whole process, the amount of dust leaked meets the regulations within the factory area, and all surfaces of the brick body are polished at one time with high efficiency and in one go.

[0032] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered merely as exemplary, and the true scope of this application is indicated by the claims.

[0033] It should be understood that the present application is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The above-described embodiments of the present application do not constitute a limitation on the scope of protection of the present application.

Claims

1. A grinding and sandblasting machine for silicon nitride bonded silicon carbide bricks, comprising a sandblasting chamber (1), characterized in that: Dust reduction chambers (2) are provided on both sides of the sandblasting chamber (1), dust-proof curtains (4) are provided at the entrances and exits of the sandblasting chamber (1) and the dust reduction chamber (2), a collecting structure is provided at the bottom of the sandblasting chamber (1) and the dust reduction chamber (2), a rolling conveyor belt (3) passes through the sandblasting chamber (1) and the dust reduction chamber (2), and the sandblasting chamber (1) and the dust reduction chamber (2) are connected via a connecting pipe (5), two groups of sandblasting guns (11) with openings arranged opposite to each other are installed in the sandblasting chamber (1), the two groups of sandblasting guns (11) are respectively located on the upper and lower sides of the rolling conveyor belt (3), the two groups of sandblasting guns (11) are staggered, and the two groups of sandblasting guns (11) are arranged parallel and tilted, and a negative pressure dust removal structure is provided on the top of the sandblasting chamber (1).

2. A grinding and sandblasting machine for silicon nitride bonded silicon carbide bricks according to claim 1, characterized in that: The collecting structure comprises a collecting bin (12) installed at the bottom of the sandblasting chamber (1) and the dust reduction chamber (2), and a collecting funnel (13) is installed at the bottom of the collecting bin (12).

3. The grinding and sandblasting machine for silicon nitride bonded silicon carbide bricks according to claim 1, characterized in that: The negative pressure dust removal structure comprises a first dust collection hood (7) installed on the top of the sandblasting chamber (1); one side of the first dust collection hood (7) is connected to a dust collector pipe (6); and the dust collector pipe (6) is connected to a negative pressure dust removal device.

4. The grinding and sandblasting machine for silicon nitride bonded silicon carbide bricks according to claim 1, characterized in that: The sandblasting gun (11) is installed in the sandblasting chamber (1) via a mounting plate (8), and the sandblasting gun (11) swings via a swing mechanism.

5. The grinding and sandblasting machine for silicon nitride bonded silicon carbide bricks according to claim 4, characterized in that: The swing mechanism comprises a joystick (9) located on one side of the sandblasting gun (11), the two ends of the joystick (9) respectively pass through the two end side walls of the sandblasting chamber (1), a reciprocating motor is installed on one side of the sandblasting chamber (1), one end of the joystick (9) is connected to the reciprocating motor, the joystick (9) is provided with a limiting groove (15) on one side of the sandblasting gun (11), a limiting rod (16) is fixed on one side of the sandblasting gun (11), and the limiting rod (16) is located in the limiting groove (15).

6. The grinding and sandblasting machine for silicon nitride bonded silicon carbide bricks according to claim 1, characterized in that: A second dust collecting cover (10) is installed at one end of the connecting pipe (5) located in the dust reduction chamber (2).

7. The grinding and sandblasting machine for silicon nitride bonded silicon carbide bricks according to claim 1, characterized in that: An observation window (14) is also provided on one side of the sandblasting chamber (1).

8. The grinding and sandblasting machine for silicon nitride bonded silicon carbide bricks according to claim 1, characterized in that: The dustproof curtain (4) is made of rubber.

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