Safety device for a laboratory ball press
By designing a protective shell and guide strip structure on the green pellet pressure testing machine, the problem of slag splashing during the pressure test of green pellets was solved, achieving safe and convenient slag handling.
Patent Information
- Application Number
- CN202521968359.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-12
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-12
AI Technical Summary
When testing the compressive strength of raw pellets in existing laboratories, there is a problem of pellet crushing slag splashing, which endangers the safety of operators and makes the environment difficult to clean.
A safety device for a laboratory green pellet pressure testing machine was designed, including an operating platform, a testing platform, a first protective shell, and a second protective shell, which are connected by rotation to form a closed space. A guide strip is provided on the inner side of the protective shell to guide the debris to the storage drawer in the discharge box.
It effectively prevents debris from splashing, protects the laboratory environment, improves work efficiency, facilitates debris recycling and utilization, and reduces cleaning difficulty.
Smart Images
Figure CN224681964U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pellet production and testing technology, specifically a safety device for a laboratory green pellet pressure testing machine. Background Technology
[0002] Currently, the steel industry has made significant achievements in reducing carbon emissions and increasing efficiency, making a great contribution to the "dual carbon" (carbon reduction and carbon emission reduction). Among these achievements, the proportion of pellets used in blast furnace production has been increasing year by year. Therefore, it is particularly important for the laboratory to conduct rapid analysis on newly arrived raw materials, especially the testing of the compressive strength of green pellets, which is an important indicator for blast furnaces to evaluate pellets.
[0003] Currently, the laboratory method for testing the compressive strength of green iron ore pellets is as follows: Fresh iron concentrate is pelletized in a specific ratio using a disc pelletizer. After 21 minutes, qualified green pellets (10-12.5 mm) are screened and dried for 40-60 minutes at approximately 180℃. A certain quantity of green pellets is then selected for a compressive strength test. However, this process is difficult to clean up the pellet breakage residue. Similarly, a certain quantity of dried pellets is then tested using the same instrument for dry pellet compressive strength. During this test, pellet breakage residue splashes, which can easily cause injury to operators and makes the laboratory environment difficult to clean. Utility Model Content
[0004] The purpose of this invention is to provide a safety device for a laboratory green pellet pressure testing machine to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a safety device for a laboratory green ball pressure testing machine, comprising an operating platform, a testing platform, a first protective shell and a second protective shell, wherein a through-hole is provided at the center of the operating platform, and the testing platform is welded to the inside of the slot via a bracket, and the first protective shell is welded to the upper end of the operating platform at the rear end of the slot, and the left end of the first protective shell is rotatably connected to the second protective shell via a rotating shaft;
[0006] A first protective plate is welded to the inner side of the top of the first protective shell, and a second protective plate is welded to the inner side of the top of the second protective shell. The center of the first protective plate and the second protective plate together form a through hole, and the punching head of the testing machine provided in the through hole is located above the testing platform.
[0007] The bottom surface of the operating platform is welded with a material drop box, and the bottom of the material drop box is welded with a sample storage box with a connected structure. A storage drawer is slidably connected inside the sample storage box.
[0008] As a preferred embodiment of the present invention, both the first protective shell and the second protective shell are semi-circular with the same structure, and the first protective shell and the second protective shell are spliced together to form a circular shape.
[0009] As a preferred embodiment of this utility model, the through hole formed by the first protective plate and the second protective plate is circular, and the diameter of the through hole is larger than the outer diameter of the punch head of the testing machine.
[0010] In a preferred embodiment of this invention, the right ends of the first protective shell and the second protective shell are fixedly connected by a snap fastener, and a gap is left between the bottom surface of the second protective shell and the upper surface of the operating platform.
[0011] In a preferred embodiment of this invention, a guide strip A is welded to the inner bottom of the first protective shell, and a guide strip B is welded to the inner bottom of the second protective shell, wherein the radii of the guide strip A and the guide strip B are the same.
[0012] In a preferred embodiment of this utility model, the guide strip A and the guide strip B are connected and fitted together, and the inner end faces of the guide strip A and the guide strip B are inverted conical structures, and the bottom inner end of the guide strip A is connected to the groove.
[0013] In a preferred embodiment of this invention, the bottom end face of the guide strip B is flush with the bottom end face of the second protective shell, and a gap is left between the bottom end face of the guide strip B and the upper end face of the operating platform.
[0014] In a preferred embodiment of this invention, the top of the material feeding box is connected to the slot, and the material feeding box has an inverted frustum structure.
[0015] As a preferred embodiment of this utility model, both the first protective shell and the second protective shell are semi-circular structures with a radius of 10cm and a height of 15cm.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] 1. In this utility model, a first protective shell and a second protective shell are provided on the outside of the operating platform. The first protective shell and the second protective shell are rotatably connected, which not only facilitates the placement of materials, but also prevents the splashing debris generated during the test from being blocked by the protective shell and the protective plate, thereby protecting the laboratory environment, improving the work efficiency of the test personnel, and reducing the splashing of ore pellets during cleaning.
[0018] 2. In this utility model, by providing guide strips at the bottom inner sides of the two protective shells, the slag splashed during the test falls directly into the material box through the guide strips, and then into the storage drawer. This not only avoids the splashing of slag, but also facilitates the recovery and utilization of pellets, thus making it easier for test personnel to observe and summarize. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the open structure of the protective shell of this utility model;
[0020] Figure 2 This is a schematic diagram of the protective shell closing connection structure of this utility model;
[0021] Figure 3 This is a front view of the internal connection structure between the protective shell and the sample storage box of this utility model.
[0022] Figure 4 This is a front view of a partial connection structure between the protective shell and the material feeding box of this utility model;
[0023] Figure 5 Top view of the protective shell of this utility model (open structure);
[0024] Figure 6 This is a schematic diagram of the flow guiding structure of this utility model.
[0025] In the diagram: 1. Operating platform; 2. Groove; 3. Test platform; 4. First protective shell; 5. Guide bar A; 6. First protective plate; 7. Testing machine punch head; 8. Second protective shell; 9. Second protective plate; 10. Through hole; 11. Guide bar B; 12. Material box; 13. Sample storage box; 14. Storage drawer; 15. Buckle. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0027] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, in the description of this utility model, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0028] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. "Multiple" means two or more, and unless otherwise explicitly limited, all of them fall within the scope of protection of this utility model.
[0029] Example 1
[0030] like Figure 1 , 2 As shown in Figure 5, this utility model provides a technical solution: including an operating platform 1, a test platform 3, a first protective shell 4 and a second protective shell 8. A through-hole 2 is provided at the center of the operating platform 1. The test platform 3 is welded to the inside of the slot 2 by a bracket. The first protective shell 4 is welded to the upper end of the operating platform 1 at the rear end of the slot 2. The left end of the first protective shell 4 is rotatably connected to the second protective shell 8 by a rotating shaft.
[0031] A first protective plate 6 is welded to the inner side of the top of the first protective shell 4, and a second protective plate 9 is welded to the inner side of the top of the second protective shell 8. The center of the first protective plate 6 and the second protective plate 9 together form a through hole 10. The test machine punch 7 provided in the through hole 10 is located above the test platform 3.
[0032] Both the first protective shell 4 and the second protective shell 8 are semi-circular with the same structure, and the first protective shell 4 and the second protective shell 8 are spliced together to form a circular shape, which can provide all-round protection for debris.
[0033] The through hole 10 formed by the first protective plate 6 and the second protective plate 9 has a circular structure, and the diameter of the through hole 10 is larger than the outer diameter of the testing machine punch head 7, so as to avoid the testing machine punch head 7 from colliding with the protective plate.
[0034] The right end of the first protective shell 4 and the second protective shell 8 are fixedly connected by a buckle 15, and a gap is left between the bottom surface of the second protective shell 8 and the upper surface of the operating platform 1 to facilitate the insertion of materials after the protective shell is opened.
[0035] Both the first protective shell 4 and the second protective shell 8 are semi-circular structures with a radius of 10cm and a height of 15cm, which facilitates neat splicing of the two protective shells.
[0036] In this embodiment, a first protective shell and a second protective shell are provided on the outside of the operating platform. The first protective shell and the second protective shell are rotatably connected, which not only facilitates the placement of materials, but also prevents the splashing debris generated during the test from being blocked by the protective shell and the protective plate, thereby protecting the laboratory environment, improving the work efficiency of the test personnel, and reducing the splashing of ore pellets during cleaning.
[0037] Example 2
[0038] like Figure 1-4 As shown in Figure 6, this utility model provides a technical solution: including an operating platform 1, a material drop box 12 welded to the bottom surface of the operating platform 1, and a sample storage box 13 with a communicating structure welded to the bottom of the material drop box 12, and a storage drawer 14 slidably connected inside the sample storage box 13.
[0039] A guide strip A5 is welded to the inner bottom of the first protective shell 4, and a guide strip B11 is welded to the inner bottom of the second protective shell 8. The guide strips A5 and B11 have the same radius, which can guide the debris into the discharge box.
[0040] The guide strip A5 and the guide strip B11 are connected and fitted together. The inner end faces of the guide strip A5 and the guide strip B11 are inverted conical. The bottom inner end of the guide strip A5 is connected to the groove 2, which facilitates the flow treatment of the slag.
[0041] The bottom surface of the guide strip B11 is flush with the bottom surface of the second protective shell 8, and there is a gap between the bottom surface of the guide strip B11 and the upper surface of the operating platform 1 to facilitate the rotation of the second protective shell and avoid the second protective shell from rubbing against the operating platform when it rotates.
[0042] The top of the discharge box 12 is connected to the slot 2, and the discharge box 12 has an inverted truncated cone structure to facilitate the falling of debris into the storage drawer for further processing.
[0043] In this embodiment, guide strips are provided at the bottom inner sides of the two protective shells. The slag splashed during the test falls directly into the material box through the guide strips, and then into the storage drawer. This not only avoids the splashing of slag, but also facilitates the recovery and utilization of pellets, thus making it easier for the test personnel to observe and summarize.
[0044] Working principle:
[0045] 1. Pre-experiment preparation stage
[0046] Confirm that the operating platform 1 is placed stably, the material drop box 12 is firmly welded to the sample storage box 13, and the storage drawer 14 slides smoothly in the sample storage box 13 without any jamming.
[0047] Unfasten the buckle 15 at the right end of the connection between the first protective shell 4 and the second protective shell 8, and rotate the second protective shell 8 outward around the pivot axis that connects it to the left end of the first protective shell 4, so that the slot 2 on the operating platform 1 and the internal test platform 3 are fully exposed.
[0048] 2. Sample Placement Stage
[0049] Place the sample stably in the center of the test platform 3; ensure that the green ball is placed directly below the through hole 10 formed by the first protective plate 6 and the second protective plate 9 to avoid subsequent stamping deviation.
[0050] 3. Protective structure closure and fixing stage
[0051] Rotate the second protective shell 8 in the opposite direction so that it returns to its initial position around the axis of rotation, and splices it with the semi-circular structure of the first protective shell 4 to form a complete circular shape;
[0052] The buckle 15 at the right end of the connection between the first protective shell 4 and the second protective shell 8 is fastened to complete the fixing of the protective structure; at this time, the bottom surface of the second protective shell 8 and the upper surface of the operating platform 1 maintain a reserved gap, which does not affect the rotation of the second protective shell 8.
[0053] 4. Pressure test operation phase
[0054] Start the pressure testing machine and control the testing machine punch head 7 to move downward along the circular through hole 10 formed by the first protective plate 6 and the second protective plate 9; since the diameter of the through hole 10 is larger than the outer diameter of the testing machine punch head 7, it ensures that the punch head can penetrate into the protective shell without obstruction.
[0055] The testing machine's punch head 7 continuously applies downward pressure until it contacts the green ball on the testing platform 3 and gradually increases the pressure until the green ball is crushed. During this process, the first protective shell 4 and the second protective shell 8 form a closed protective space to prevent green ball fragments from splashing.
[0056] 5. Crushed sample collection stage
[0057] After the green pellet is crushed, the broken fragments are blocked by the first protective shell 4 and the second protective shell 8. The fragments slide into the material drop box 12 through the inclined surfaces of the guide strip A5 and guide strip B11 at the bottom of the inner side of the protective shell. The material drop box 12 has an inverted truncated cone structure, which guides the fragments to be transported downward in a concentrated manner. Finally, the fragments fall into the storage drawer 14 that is slidably connected inside the sample collection box 13, which is connected to the bottom of the material drop box 12.
[0058] 6. Post-experiment cleanup phase
[0059] Turn off the pressure testing machine, control the punch head 7 of the testing machine to retract upward from the through hole 10 and return to the initial position, release the buckle 15, rotate the second protective shell 8 again, and check whether there are any remaining fragments on the surface of the test platform 3. If there are any, they need to be cleaned.
[0060] Pull out the storage drawer 14 inside the sample storage box 13, empty the collected raw pellet fragments, clean the drawer, and slide it back into the sample storage box 13 to complete a single test procedure.
[0061] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A safety device for a laboratory green pellet pressure testing machine, comprising an operating platform (1), a testing platform (3), a first protective shell (4), and a second protective shell (8), characterized in that: The operating platform (1) has a through slot (2) at its center. A test platform (3) is welded inside the slot (2) via a bracket. A first protective shell (4) is welded to the upper end of the operating platform (1) at the rear end of the slot (2). The left end of the first protective shell (4) is rotatably connected to a second protective shell (8) via a rotating shaft. A first protective plate (6) is welded to the inner side of the top of the first protective shell (4), and a second protective plate (9) is welded to the inner side of the top of the second protective shell (8). The center of the first protective plate (6) and the second protective plate (9) together form a through hole (10). The test machine punch (7) provided in the through hole (10) is located above the test platform (3). The bottom surface of the operating platform (1) is welded with a material drop box (12), and the bottom of the material drop box (12) is welded with a sample storage box (13) with a connected structure. A storage drawer (14) is slidably connected inside the sample storage box (13).
2. The safety device for a laboratory green pellet pressure testing machine according to claim 1, characterized in that: The first protective shell (4) and the second protective shell (8) are both semi-circular with the same structure, and the first protective shell (4) and the second protective shell (8) are spliced together to form a circular shape.
3. The safety device for a laboratory green pellet pressure testing machine according to claim 1, characterized in that: The through hole (10) formed by the first protective plate (6) and the second protective plate (9) is circular, and the diameter of the through hole (10) is larger than the outer diameter of the punch head (7) of the testing machine.
4. The safety device for a laboratory green pellet pressure testing machine according to claim 1, characterized in that: The first protective shell (4) and the second protective shell (8) are fixedly connected at the right end by a buckle (15), and there is a gap between the bottom surface of the second protective shell (8) and the top surface of the operating platform (1).
5. The safety device for a laboratory green pellet pressure testing machine according to claim 1, characterized in that: The first protective shell (4) has a guide strip A (5) welded to its inner bottom end, and the second protective shell (8) has a guide strip B (11) welded to its inner bottom end, and the guide strip A (5) and the guide strip B (11) have the same radius.
6. The safety device for a laboratory green pellet pressure testing machine according to claim 5, characterized in that: The guide strip A (5) and the guide strip B (11) are connected and fitted together, and the inner end faces of the guide strip A (5) and the guide strip B (11) are inverted cones, and the bottom inner side of the guide strip A (5) is connected to the groove (2).
7. The safety device for a laboratory green pellet pressure testing machine according to claim 6, characterized in that: The bottom end face of the guide strip B (11) is flush with the bottom end face of the second protective shell (8), and there is a gap between the bottom end face of the guide strip B (11) and the upper end face of the operating platform (1).
8. The safety device for a laboratory green pellet pressure testing machine according to claim 1, characterized in that: The top of the material drop box (12) is connected to the slot (2), and the material drop box (12) has an inverted frustum structure.
9. The safety device for a laboratory green pellet pressure testing machine according to claim 1, characterized in that: Both the first protective shell (4) and the second protective shell (8) are semi-circular structures with a radius of 10cm and a height of 15cm.