A device for grinding the bottom of a static refractory crucible

Abstract

The utility model relates to refractory preparation equipment technical field discloses a kind of static crucible bottom grinding device of refractory, including support platform, fixed platform and sample drill, fixed platform is equipped with fixed screw for clamping sample, and sample drill is equipped with telescopic rocker, switch and water pipe, and its output end is equipped with grinding water drill head, the grinding water drill head includes connector and hollow tubular drill head pipe body, and diamond cutting edge is inlaid in the bottom end circumferential of pipe body, and hollow triangular support plate is fixedly connected in the inner wall of bottom end opening place. The utility model is equipped with special grinding water drill head and internal triangular support plate structure, solve the problem of uneven of concave hole bottom in static crucible preparation, cooperate water cooling system to realize efficient chip removal and cooling, significantly improve the objectivity and accuracy of erosion resistance experimental data.

Description

Technical Field

[0001] This utility model relates to the technical field of refractory material preparation equipment, and in particular to a device for grinding the bottom of a static crucible for refractory materials. Background Technology

[0002] In the research and production testing of refractory materials, slag resistance testing is an important step in evaluating material performance, and the static crucible method is one of the most commonly used testing methods. This method requires drilling a blind hole in the refractory block sample to form the inner cavity of the crucible, which is used to hold the molten slag and react at high temperature. Currently, a core drilling machine is usually used in conjunction with a hollow drill bit to prepare this concave hole. That is, a deep annular groove is first drilled, and then the cylindrical rock core remaining in the middle is broken off and removed.

[0003] However, this existing preparation process has a significant drawback: after the core is removed, the bottom of the concave hole often exhibits an uneven fracture surface, making it impossible to maintain a smooth surface. This uneven bottom surface leads to irregular contact interfaces between the slag and the refractory material, resulting in inconsistent erosion depths at different points during high-temperature erosion. This interferes with the accurate measurement of the anti-erosion area and penetration depth after the experiment, leading to a lack of objectivity and accuracy in the final experimental data, making it difficult to truly reflect the slag resistance performance of the material.

[0004] Therefore, this utility model proposes a device for grinding the bottom of a static crucible for refractory materials to overcome the shortcomings of the prior art. Utility Model Content

[0005] In view of the problem in the prior art that the bottom of the static crucible for refractory materials cannot be kept flat after drilling concave holes and taking out rock cores during the preparation process, which leads to difficulties in observing the results of subsequent anti-erosion experiments and reduces the objectivity and accuracy of the data, this utility model aims to provide a bottom flattening device for static crucibles for refractory materials with an improved structure that can effectively solve the above problems.

[0006] This utility model provides a device for grinding the bottom of a static crucible for refractory materials, including: a support platform and a fixed platform disposed above the support platform. The fixed platform is threaded with a fixing screw. The device also includes a drilling machine located above the fixed platform. The drilling machine is equipped with a telescopic rocker and a switch. A grinding water drill bit is installed at the output end of the drilling machine. A water pipe is also provided on one side of the device.

[0007] The water-cooled grinding bit has a special structure specifically designed for bottom finishing. It includes an upper connector and a lower drill tube. The drill tube is a hollow tubular structure. Diamond cutting edges are circumferentially embedded on the bottom end face of the drill tube. Most importantly, a triangular support plate is fixedly connected to the hollow opening at the bottom of the drill tube. The outer edge of the triangular support plate is fixedly connected to the inner wall of the drill tube.

[0008] Furthermore, the support platform, the fixed platform, and the ground water drill bit are combined in a specific spatial relationship. The fixed platform is used to securely hold the refractory material sample. The drilling machine drives the drill bit tube and the diamond cutting edge to rotate through the connector. The water pipe is responsible for supplying water to the cutting area. The triangular support plate significantly enhances the structural rigidity of the bottom of the tube while not obstructing internal chip removal.

[0009] Preferably, the material details of the triangular support plate are more specifically defined. It is made of high-hardness diamond material, and the triangular support plate has a hollow radial tripod structure. This structure ensures strength and leaves enough chip removal channels. At the same time, the bottom plane of the triangular support plate is located above the diamond cutting edge to assist grinding and stabilize the flow field during the grinding process.

[0010] Preferably, the connecting part of the ground water drill bit adopts an optimized structural design. The connector and the drill bit tube body are integrally formed to ensure coaxiality, and the outer diameter of the connector is designed to be smaller than the outer diameter of the drill bit tube body for easy installation and disassembly.

[0011] Preferably, the diamond cutting edges are arranged at intervals along the circumferential direction of the bottom end of the drill bit tube, and the gap between adjacent cutting edges fits the internal cavity, which can efficiently cut and grind the bottom of the concave hole of the refractory material static crucible and remove waste slag in time.

[0012] Preferably, the water pipes are arranged in a specific direction, with the outlet of the water pipes tilted towards the area between the ground water drill bit and the fixed platform, so as to continuously deliver coolant to the deep hole position where the diamond cutting edge contacts the refractory material during the processing, and prevent the drill from burning due to high temperature.

[0013] Preferably, the fixed platform is connected to the support platform by a column for support and fixation, and the main body of the fixed platform is a U-shaped plate structure or a frame structure. The number of fixing screws is at least two, which penetrate the side wall of the fixed platform and extend into the internal space of the fixed platform, thereby realizing bidirectional or multidirectional locking of samples of different sizes.

[0014] Preferably, the telescopic rocker arm is located on the side of the drilling machine and is connected to the main shaft through a mechanical transmission mechanism. It is used to manually and precisely control the vertical movement of the grinding water drill bit to adjust the cutting depth.

[0015] Preferably, the switch is electrically connected to the drive circuit of the drilling machine, and the switch is located in a convenient position on the machine body to control the start and stop of the drilling machine motor.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model solves the problem that the bottom cannot be kept flat after the central cylinder is removed in the existing static crucible preparation by designing a special flat water drill bit and embedding a diamond cutting edge and a unique triangular support plate structure. It achieves the technical effect of efficiently and accurately flattening the bottom of the crucible concave hole, thereby eliminating the interference of uneven bottom on subsequent anti-corrosion experimental observation and improving the objectivity and accuracy of experimental results.

[0018] 2. This utility model solves the problem of traditional grinding tools getting stuck or overheating during deep hole machining by using a hollow tubular drill bit body with a hollow triangular support plate and a side water supply pipeline. It achieves the effect of coolant smoothly entering the cutting area to cool down and remove chips in time, which not only extends the service life of the grinding head, but also improves the surface finish of the machined surface.

[0019] 3. This utility model utilizes an existing drilling machine platform for modification. It only requires replacing the grinding water drill bit and using a simple fixed platform and telescopic rocker arm to complete the operation. This solves the problem of high cost and complex operation of purchasing large-scale grinding equipment. It achieves the effects of simple structure, easy processing, convenient maintenance, and significant reduction in production and experimental costs. At the same time, it avoids repeated experiments due to unqualified samples, saving manpower and energy consumption. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of a static crucible bottom grinding device for refractory materials proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the drill bit tube body of a static crucible bottom grinding device for refractory materials proposed in this utility model.

[0022] Figure 3 This is a schematic diagram of the connecting head of a static crucible bottom grinding device for refractory materials proposed in this utility model;

[0023] Figure 4This is a schematic diagram of the diamond cutting edge portion of a static crucible bottom grinding device for refractory materials proposed in this utility model.

[0024] Figure 5 This is a schematic diagram of the triangular support plate of the bottom grinding device for a static crucible of refractory materials proposed in this utility model.

[0025] Legend:

[0026] 1. Fixed platform; 2. Grinding water drill bit; 201. Drill bit body; 202. Connector; 3. Fixing screw; 4. Telescopic rocker arm; 5. Switch; 6. Water pipe; 7. Support platform; 8. Triangular support plate; 9. Diamond cutting edge. Detailed Implementation

[0027] 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.

[0028] Please refer to Figures 1 to 5 This utility model provides a device for grinding the bottom of a static crucible for refractory materials, which aims to solve the technical problem in the prior art that the bottom cannot be kept flat after drilling a concave hole during the preparation of a static crucible, thereby interfering with the observation of anti-corrosion test results and reducing the objectivity and accuracy of the data.

[0029] like Figure 1 As shown, the main structure of the static crucible bottom grinding device for refractory materials includes a support platform 7 and a fixed platform 1 set above the support platform 7. The support platform 7 serves as the bearing base of the entire device, and its bottom is equipped with an anti-slip base to ensure stability during the processing. The fixed platform 1 serves as the clamping station for refractory material samples. It is fixedly connected to the top surface of the support platform 7 by a column, and the fixed platform 1 has a U-shaped plate structure or a frame structure to form a accommodating space. The fixed platform 1 is threaded with fixing screws 3. There are at least two fixing screws 3, which are set on the side wall of the fixed platform 1. The fixing screws 3 penetrate the side wall of the fixed platform 1 and extend into the internal space of the fixed platform 1. By tightening the fixing screws 3, the refractory material block placed on the fixed platform 1 can be pressed and locked to ensure that the sample will not shift or shake during subsequent grinding operations.

[0030] A drilling machine is installed above the fixed platform 1. The drilling machine serves as the output mechanism for rotational power and lifting action. A telescopic rocker arm 4 is installed on the side of the drilling machine. The telescopic rocker arm 4 is connected to the gear and rack lifting mechanism inside the drilling machine. By manually cranking the telescopic rocker arm 4, the vertical lifting and lowering movement of the drilling machine spindle can be precisely controlled, thereby adjusting the depth of cut. A switch 5 is also installed on the side of the drilling machine housing. The switch 5 is electrically connected to the drive motor of the drilling machine and is used to control the start and stop of the drilling machine. In addition, a water pipe 6 is installed on one side of the device. One end of the water pipe 6 is connected to an external water source, and the other end of the water pipe 6 serves as a water outlet and is fixedly installed on the side below the body of the drilling machine. The water outlet is inclined towards the area between the output end of the drilling machine and the fixed platform 1, and is used to continuously deliver coolant to the grinding contact surface during the processing to cool down and flush away debris.

[0031] The grinding water drill bit 2 is a key component specifically designed for grinding the bottom of the concave hole in a static crucible. Its structure includes an upper connector 202 and a lower drill bit tube 201. The outer surface of the connector 202 has a threaded structure, which is screwed onto the output spindle end of the drilling machine. The center of the connector 202 may also have a through hole extending into the interior to accommodate certain drilling machines with a central water supply function. The lower end of the connector 202 is fixedly connected to the top end of the drill bit tube 201, and the connector 202 and the drill bit tube 201 can be integrally formed or welded together. The outer diameter of the connector 202 is smaller than the outer diameter of the drill bit tube 201 to facilitate clamping or installation. The drill bit tube 201 has a hollow tubular structure. Its hollow design not only reduces the weight of the drill bit, but more importantly, it provides a channel for the inflow of coolant and the discharge of grinding chips. On the bottom end face of the drill bit tube 201, multiple diamond cutting edges 9 are inlaid at intervals along its circumference. The diamond cutting edges 9 serve as the direct working parts and utilize their high hardness to efficiently grind refractory materials. A chip clearance gap is naturally formed between adjacent diamond cutting edges 9 to prevent chip accumulation from causing the drill to jam or overheat.

[0032] Meanwhile, a unique triangular support plate 8 is also provided at the hollow opening at the bottom of the drill bit tube 201. The outer edges of the triangular support plate 8 are fixedly connected to the inner wall of the drill bit tube 201. This connection method ensures that the triangular support plate 8 is stably located at the opening inside the tube. The triangular support plate 8 is made of diamond material with extremely high hardness, which has good wear resistance and structural rigidity. The triangular support plate 8 has a hollow radial tripod structure. This hollow design ensures structural strength while minimizing obstruction of the opening section, ensuring that the cooling water can flow smoothly and carry away the waste generated by grinding. It is particularly worth noting that the triangular support plate... The bottom plane where 8 is located is flush with the bottom surface of the diamond cutting edge 9. This structural feature has a dual function. On the one hand, the triangular support plate 8 can help support the end of the drill bit tube 201 and prevent the tube from deforming during high torque grinding. On the other hand, the flush bottom design allows the triangular support plate 8 to play a certain role in auxiliary grinding or flow field disturbance in the central area of ​​the concave hole during rotation, further improving the flatness and smoothness of the bottom surface. As for the drive source of this grinding water drill bit 2, namely the aforementioned drilling machine, it usually integrates a motor and a speed change mechanism. Those skilled in the art can select appropriate speed and torque parameters according to actual processing needs, which will not be elaborated here.

[0033] Based on the above embodiments, the present invention may further include the following preferred technical solutions:

[0034] As a preferred embodiment, in order to enhance the applicability and stability of the device, the support platform 7 is designed as a stepped multi-layer structure. This structure can not only increase the counterweight at the bottom of the device and lower the center of gravity, but also effectively absorb the small vibrations generated when the drilling machine is working, thereby ensuring that the components above the support platform 7 operate smoothly. In addition, the side wall thickness and internal space dimensions of the fixed platform 1 should be optimized according to the specifications of common refractory material samples to ensure that most standard-sized square samples can be smoothly placed in and effectively clamped by the fixing screws 3.

[0035] As another preferred embodiment, in order to further ensure the cooling effect during the grinding process, the water outlet at the end of the water pipe 6 is fixed near the cutting area by an independent adjusting bracket. This bracket allows the operator to fine-tune the angle of the water outlet, thereby ensuring that no matter the depth of the drill bit, the high-pressure or normal-pressure water jet can accurately and directly wash the cutting point, quickly removing the large amount of heat generated by friction. At the same time, the impact force of the water flow is used to flush out the grinding debris at the bottom of the concave hole through the hollow channel or side wall gap of the drill bit tube 201, preventing excessive wear or jamming caused by the accumulation of waste chips.

[0036] As a further preferred embodiment, in order to improve the convenience and safety of operation, the switch 5 can adopt a waterproof and dustproof button design to adapt to the water splash and dust environment that may exist on site. At the same time, the handle of the telescopic rocker 4 can be set with anti-slip texture or covered with rubber material to increase the friction of the hand and ensure that the operator can accurately control the feed amount when fine-tuning the drill bit lifting and lowering, avoiding misoperation caused by hand slippage or the drill bit falling too fast and hitting the sample.

[0037] As another preferred embodiment, in order to optimize the cutting performance of the grinding water drill bit 2, the diamond cutting edge 9 is preferably designed with a fan-shaped head structure. Multiple fan-shaped heads are evenly distributed along the bottom circumference of the drill bit tube 201. The gaps reserved between each fan-shaped head form an effective chip removal groove. Combined with the hollow structure of the triangular support plate 8 at the center position, a fluid circulation system that connects the inside and outside is constructed, which greatly improves the smoothness of the grinding operation and the processing quality.

[0038] The working principle of the static crucible bottom grinding device for refractory materials of this utility model is as follows:

[0039] When using this device to process refractory materials, the refractory material must first be prepared into a standard square blank. Then, the refractory material block is placed inside the fixed platform 1 above the support platform 7. By screwing the fixing screw 3 located on the side wall of the fixed platform 1, the end of the screw extends inward and tightly abuts against the side of the refractory material block, thereby firmly locking the block on the fixed platform 1 and ensuring that the sample will not move or shake during the subsequent high-speed grinding process.

[0040] Next, the drilling machine is started and a conventional core drill bit is used to drill a concave hole at the center of the top of the block, and the cylindrical core sample in the middle is taken out. At this time, an uneven cross-section is usually left at the bottom of the concave hole. In order to deal with this problem, the operator needs to remove the core drill bit on the drilling machine and replace it with the special flat water drill bit 2 of this utility model, and install it firmly on the output spindle of the drilling machine through the connector 202.

[0041] Subsequently, the height of the drilling machine is adjusted by manually operating the telescopic rocker arm 4, so that the grinding water drill bit 2 is suspended directly above the concave hole. After confirming the alignment, the switch 5 is pressed to start the drilling machine, which drives the grinding water drill bit 2 to rotate at high speed. At the same time, the water pipe 6 is turned on, so that the coolant is continuously sprayed onto the processing area. The operator holds the telescopic rocker arm 4 to control the grinding water drill bit 2 to slowly descend into the concave hole. When the diamond cutting edge 9 at the bottom of the drill bit contacts the uneven surface at the bottom of the concave hole, cutting and grinding begin. During this process, the triangular support plate 8 located at the opening of the drill bit tube body 201 plays a key role. It not only provides rigid support for the end of the tube body to resist the cutting reaction force, but its hollow structure also allows the water flow to smoothly wash away the grinding debris from the inside of the tube body or the gap, preventing the accumulation of waste chips from causing the drill to jam or overheat.

[0042] Finally, after confirming by touch or the limiting device that the bottom of the concave hole has been completely ground flat, reverse the telescopic rocker arm 4 to raise the ground water drill bit 2 and move it out of the concave hole, turn off the switch 5 to stop the motor rotation, turn off the water source, loosen the fixing screw 3 and take out the processed crucible sample to obtain a high-quality sample with a flat bottom that meets the requirements of static crucible experiments.

[0043] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A device for grinding the bottom of a static crucible for refractory materials, comprising a support platform (7) and a fixed platform (1) disposed above the support platform (7), wherein a fixing screw (3) is threadedly connected to the fixed platform (1); Its features are, The device also includes a drilling machine located above the fixed platform (1), the drilling machine is equipped with a telescopic rocker arm (4) and a switch (5), the output end of the drilling machine is equipped with a flat water drill bit (2), and a water pipe (6) is provided on one side of the device; The ground water drill bit (2) includes an upper connector (202), a middle drill bit tube (201), and a lower diamond cutting edge (9). The upper end of the connector (202) is threaded to the drilling machine, and the middle end of the connector (202) is fixedly connected to the drill bit tube (201). The drill bit tube (201) is a hollow tubular structure. The bottom end face of the drill bit tube (201) is circumferentially inlaid with a diamond cutting edge (9). A triangular support plate (8) is fixedly connected to the hollow opening at the bottom end of the drill bit tube (201). The outer edge of the triangular support plate (8) is fixedly connected to the inner wall at the bottom end of the drill bit tube (201).

2. The device for grinding the bottom of a static crucible for refractory materials according to claim 1, characterized in that, The triangular support plate (8) is made of diamond and has a tripod structure. The plane on which the triangular support plate (8) is located is above the diamond cutting edge (9).

3. The device for grinding the bottom of a static crucible for refractory materials according to claim 1, characterized in that, The connector (202) and the drill bit tube (201) are integrally formed, and the outer diameter of the connector (202) is smaller than the outer diameter of the drill bit tube (201).

4. The device for grinding the bottom of a static crucible for refractory materials according to claim 1, characterized in that, The diamond cutting edges (9) are distributed at intervals along the bottom circumference of the drill bit body (201), and the diamond cutting edges (9) are used to cut and grind the bottom of the concave hole of the refractory static crucible.

5. The device for grinding the bottom of a static crucible for refractory materials according to claim 1, characterized in that, The outlet of the water pipe (6) faces the area between the flattened water drill bit (2) and the fixed platform (1), and the water pipe (6) is used to deliver coolant to the position where the diamond cutting edge (9) contacts the refractory material.

6. The device for grinding the bottom of a static crucible for refractory materials according to claim 1, characterized in that, The fixed platform (1) is fixed to the top surface of the support platform (7) by a column, and the fixing screw (3) penetrates the side wall of the fixed platform (1) and extends into the internal space of the fixed platform (1).

7. The device for grinding the bottom of a static crucible for refractory materials according to claim 1, characterized in that, The telescopic rocker arm (4) is located on the side of the drilling machine and is used to control the vertical movement of the grinding water drill bit (2).

8. The device for grinding the bottom of a static crucible for refractory materials according to claim 1, characterized in that, The switch (5) is electrically connected to the drilling machine, and the switch (5) is used to control the start and stop of the drilling machine.

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