A pellet compressive strength testing device

Abstract

The present application belongs to the technical field of testing equipment, and discloses a device for testing the compressive strength of pellets, including a power device, a workbench arranged on the top of a frame, an electric control box fixed on the workbench and electrically connected to the power device, a vibration plate arranged on the workbench, a feeding device connected to the vibration plate, a feeding device fixed to the workbench at the junction of the vibration plate and the feeding device, a receiving device arranged at the end of the feeding device away from the vibration plate, a pressing device arranged above the receiving device space, a pushing device arranged at the side of the receiving device away from the feeding device, and the pushing device, the pressing device, the receiving device, the vibration plate and the pushing device are all connected to the power device. The present application combines the vibration plate and the pushing device, so that only a single pellet is tested each time, the receiving device and the pushing device are designed separately to avoid pellet waste from jamming the equipment, and the overall testing machine adopts a reverse frame style power structure design, so that the equipment is integrated as a whole and the structure is exquisite.

Description

Technical Field

[0001] The present application belongs to the technical field of testing equipment, and in particular relates to a device for detecting the compressive strength of pellets. Background Art

[0002] During the smelting process of iron for blast furnaces and direct reduction, it is necessary to measure the compressive strength of iron pellets. The measurement process is usually carried out at room temperature on dry pellet samples with complete particles that have been screened out. Most of the current metallurgical pellet testing machines use existing compression testing machines as the main machine, and then add other related test components on the basis of the compression testing machine. This often makes the overall equipment occupy a large space and has a high economic cost. During the compressive strength test, the pellets are irregular in shape and have large size deviations, making it difficult to ensure that each test is a single pellet. Existing main machines usually design the functions of receiving, pushing and pressing materials into an integrated structure to prevent waste from splashing. However, due to the variety of pellet debris styles and the high amount of dust that is easy to accumulate, it is easy for pellet waste to jam the equipment. Summary of the Invention

[0003] Based on the above background, the present application develops a pellet compressive strength testing device to solve the problems in the above background technology that the existing metallurgical pellet testing machine occupies a large space and multiple pellet samples and pellet waste are easily stuck in the equipment at a time.

[0004] In order to achieve the above application objectives, the technical solutions adopted are:

[0005] A device for detecting the compressive strength of pellets comprises a frame, a power unit, a workbench and an electric control box, wherein the workbench is arranged on the top of the frame, the electric control box is fixed on the workbench and electrically connected to the power unit, a vibrating disk is provided on the workbench, a feeding device is provided at the discharge end of the vibrating disk, the feeding device is fixed on the workbench, a lifting device is provided directly below the space of the discharge end facing one end of the workbench, a receiving device is provided at the end of the feeding device away from the vibrating disk, a pressing device is provided directly above the space of the receiving device, a pushing device is provided on the side of the receiving device away from the feeding device, and the pushing device, the pressing device, the receiving device and the lifting device are all connected to the power unit.

[0006] The present application is further configured as follows: a ball lifting track is provided on the vibration disk, the discharge end located at the edge of the vibration disk is connected to the ball lifting track, and a blocking groove is provided at the end of the discharge end.

[0007] The present application is further configured as follows: a first baffle is provided on one end of the blocking groove near the feeding device, and second baffles are symmetrically provided on both sides of the blocking groove adjacent to the first baffle, a radiation sensor is fixed on the outer side of the second baffle, and radiation holes are symmetrically provided on the second baffle corresponding to the radiation sensor, and a top material notch is provided on the bottom surface of the blocking groove between the second baffles.

[0008] The present application is further configured as follows: the lifting device includes a lifting cylinder and a lifting block, the lifting block is fixed on the top of the lifting cylinder and faces the lifting slot, and the lifting cylinder is fixed on the workbench.

[0009] The present application is further configured as follows: the material receiving device includes a material receiving cylinder, a left material receiving block and a right material receiving block; the left material receiving block and the right material receiving block can be spliced ​​into a circular material receiving area for placing pellets and a material receiving slope; the relatively high end of the material receiving slope is docked with the feeding trough of the feeding device; the left material receiving block and the right material receiving block are both connected to the material receiving cylinder.

[0010] The present application is further configured as follows: the pressing device includes an upper crossbeam, a force sensor, an upper pressing block, a protective cover and a lower pressing block; the lower pressing block is fixed on the workbench; the upper crossbeam is connected to the power device through a connecting column; the connecting column passes through the workbench and is located around the lower pressing block; the force sensor, the upper pressing block and the protective cover are fixedly connected in sequence to the side of the upper crossbeam facing the lower pressing block.

[0011] The present application is further configured as follows: the pushing device includes a pushing cylinder, a pushing block, a waste guide and a waste box, the pushing block is fixedly connected to the pushing cylinder, the waste guide is fixedly connected to the workbench, the pushing block and the waste guide are respectively located at the symmetrical ends of the lower pressure block, the pushing block abuts against the lower pressure block, the waste box is detachably connected to the bottom of the workbench, and the waste box is located at the end of the waste guide away from the lower pressure block.

[0012] The present application is further configured as follows: the height of the material receiving device is smaller than the height of the material pushing device, and the feeding trough of the feeding device connected between the material receiving device and the material pushing device is in an inclined state.

[0013] The present application is further configured as follows: a stretching handle is integrally connected to the side of the waste box.

[0014] The present application is further configured as follows: the protective cover is in a cubic shape, the side of the protective cover facing the lower pressing block has no bottom seal, and the side of the protective cover facing the pushing block is provided with a slot.

[0015] Compared with the prior art, the present application has the following beneficial effects: the vibration plate and the pushing device are combined so that only a single pellet is tested in each test; the receiving device and the pushing device are designed separately to avoid pellet waste from jamming the equipment; the overall testing machine adopts an inverted frame-style power structure design, making the equipment integrated and compact in structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 This is a schematic diagram of the overall structure of a pellet compressive strength testing device provided by one embodiment of the present application;

[0018] Figure 2 This is a schematic diagram of a pellet compressive strength testing device provided by one embodiment of the present application, with a power device inside the frame;

[0019] Figure 3 This is a structural schematic diagram of a pellet compressive strength testing device provided by one embodiment of the present application, in which a receiving cylinder is in an extended state;

[0020] Figure 4 This is a structural schematic diagram of a pellet compressive strength testing device provided by one embodiment of the present application, in which a receiving cylinder is in a retracted state;

[0021] Figure 5 This is a structural schematic diagram of a pushing device of a pellet compressive strength testing device provided by one embodiment of the present application;

[0022] Figure 6 This is a structural schematic diagram of a material pressing device of a pellet compressive strength testing device provided by one embodiment of the present application;

[0023] Figure 7 This is a structural schematic diagram of a material ejection device of a pellet compressive strength testing device provided by one embodiment of the present application;

[0024] Figure 8 It is a structural schematic diagram of a vibrating plate and a feeding device of a pellet compressive strength testing device provided in one embodiment of the present application.

[0025] Figures: 1, frame; 2, power device; 3, material receiving device; 4, workbench; 5, material pushing device; 6, material pressing device; 7, material lifting device; 8, material feeding device; 9, vibration plate; 10, electric control box; 11, pelletizing; 301, material receiving cylinder; 302, left material receiving block; 303, right material receiving block; 304, material receiving area; 305, material receiving slope; 501, material pushing cylinder; 502, material pushing block; 503, waste guide plate; 504, waste box; 50 5. Stretching handle; 601. Upper crossbeam; 602. Lower pressure block; 603. Upper pressure block; 604. Force sensor; 605. Protective cover; 606. Connecting column; 607. Slot; 701. Ejection cylinder; 702. Ejection block; 801. Feed trough; 90. Blocking trough; 901. Ball lifting track; 902. Through-beam sensor; 903. First baffle; 904. Second baffle; 905. Ejection notch; 906. Discharge end; 907. Through-beam hole. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of this application more clear, this application is further described in detail below in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain this application and are not used to limit this application.

[0027] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal connections between two components; they can refer to wireless connections or wired connections. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0029] In addition, the technical features involved in the different embodiments of the present application described above can be combined with each other as long as they do not conflict with each other.

[0030] A pellet compressive strength testing device, such as Figure 1-8 As shown, it includes a frame 1, a power unit 2, a workbench 4 and an electric control box 10. The workbench 4 is arranged on the top of the frame 1. The electric control box 10 is fixed on the workbench 4 and is electrically connected to the power unit 2. A vibration disk 9 is provided on the workbench 4. A feeding device 8 is provided at the discharge end 906 of the vibration disk 9. The feeding device 8 is fixed on the workbench 4. A lifting device 7 is provided just below the space at the discharge end 906 facing the workbench 4. A receiving device 3 is provided at the end of the feeding device 8 away from the vibration disk 9. A pressing device 6 is provided just above the space of the receiving device 3. A pushing device 5 is provided on the side of the receiving device 3 away from the feeding device 8. The pushing device 5, the pressing device 6, the receiving device 3 and the lifting device 7 are all connected to the power unit 2.

[0031] The pellet compressive strength testing device proposed in this application designs the receiving device 3 and the pushing device 5 separately, which greatly reduces the situation where waste pellets 11 get stuck in the equipment. The power device 2 can be built into the frame 1 or placed outside the frame. When the power device 2 is built into the frame, the center of gravity of the device is below the device to ensure the stability of the device during the test. The entire pellet compressive strength testing device adopts an inverted frame style structural design, which makes the overall equipment integrated and the structure sophisticated. The power device 2 includes a solenoid valve and an electric cylinder, wherein the solenoid valve controls the movement of the ejecting device 7, the pushing device 5 and the receiving device 3, and the electric cylinder provides power for the pressing device.

[0032] Furthermore, a ball-lifting track 901 is provided on the vibration disk 9, and a discharge end 906 located at the edge of the vibration disk 9 is connected to the ball-lifting track 901. A blocking groove 90 is provided at the end of the discharge end 906. A first baffle 903 is provided at one end of the blocking groove 90 near the feeding device 8. Second baffles 904 are symmetrically provided on both sides of the blocking groove 90 adjacent to the first baffle 903. A beam sensor 902 is fixed to the outside of the second baffle 904. Mirror holes 907 (not shown) are symmetrically provided on the second baffles 904 corresponding to the beam sensor 902. A material ejection notch 905 is provided on the bottom surface of the blocking groove 90 between the second baffles 904.

[0033] The vibrating plate 9 has a built-in vibration component. Multiple pellets 11 can be placed simultaneously in the top tray of the vibrating plate 9. This vibration component provides an upward vibration force to the pellets 11 on the vibrating plate 9 along the spiral ball-lifting track 901, causing the pellets 11 to be arranged in an orderly manner on the ball-lifting track 901 and to roll to the discharge end 906. Both the first baffle 903 and the second baffle 904 are integrally connected to the blocking groove 90. The second baffle 904 is taller than the first baffle 903, which is slightly larger than the diameter of a typical pellet 11. A beam sensor 902 is welded to the blocking groove 90. When a pellet 11 reaches the blocking groove 90, it is blocked by the first baffle 903 and falls into the ejection slot 905. The beam sensor 902 senses the pellet 11's arrival through the beam hole 907. The second baffles 904 are tilted away from each other to prevent the pellet 11 from being caught by the beam hole 907 during ejection.

[0034] In the specific implementation process, the ejection device 7 includes an ejection cylinder 701 and an ejection block 702 . The ejection block 702 is fixed on the top of the ejection cylinder 701 and faces the ejection notch 905 . The ejection cylinder 701 is fixed on the workbench 4 .

[0035] The ejection device 7 does not contact the discharge end 906 of the vibrating disk 9. The ejection block 702 matches the size of the ejection slot 905. When the through-beam sensor 902 detects the arrival of a pellet 11, the ejection cylinder 701 drives the ejection block 702 to move, causing the ejection block 702 to pass through the ejection slot 905 and eject the pellet 11. The ejection block 702 is provided with an inclined surface inclined toward the first baffle 903 at one end near the ejection slot 905. The inclined surface design at the top of the ejection block 702 allows the ejected pellet 11 to pass over the first baffle 903 and enter the feeding device 8. At this time, the height of the second baffle 904 is higher than the height of the ejected pellet 11, preventing the pellet 11 from falling from the side. Since the ejection block 702 can only accommodate one pellet 11, the ejection block 702 can only eject one pellet 11 at a time and feed it into the feeding device 8.

[0036] It should be noted that the material receiving device 3 includes a material receiving cylinder 301, a left material receiving block 302 and a right material receiving block 303. The left material receiving block 302 and the right material receiving block 303 can be spliced ​​into a circular material receiving area 304 for placing the pellets 11 and a material receiving slope 305. The relatively high end of the material receiving slope 305 is connected to the feeding trough 801 of the feeding device 8. The left material receiving block 302 and the right material receiving block 303 are both connected to the material receiving cylinder 301.

[0037] The receiving device 3 has two states: extended and retracted. When the receiving device 3 is in the extended state, the left receiving block 302 and the right receiving block 303 can be spliced ​​into a circular receiving area 304 for placing the pellets 11 and a receiving slope 305. The pellets 11 that move from the feeding trough 801 to the receiving device 3 enter the receiving area 304 through the inclined receiving slope 305. After the pellets 11 are stable, the receiving cylinder 301 contracts, thereby driving the pressing device 6 to descend for a pressure detection test.

[0038] In this embodiment, the material pressing device (6) includes an upper crossbeam 601, a force sensor 604, an upper pressing block 603, a protective cover 605, and a lower pressing block 602. The lower pressing block 602 is fixed on the workbench 4. The upper crossbeam 601 is connected to the power device 2 via a connecting column 606. The connecting column 606 passes through the workbench 4 and is located around the lower pressing block 602. The force sensor 604, the upper pressing block 603, and the protective cover 605 are fixedly connected in sequence on the side of the upper crossbeam 601 facing the lower pressing block 602. The protective cover 605 is in the shape of a cube. The side of the protective cover 605 facing the lower pressing block 602 has no bottom seal, and the side of the protective cover 605 facing the pushing block 502 is provided with a notch 607.

[0039] The protective cover 605 is fixed to the upper pressing block 603 by screws, and the notch 607 allows the protective cover 605 to avoid the lower pressing block 602 during the pressing process to avoid crushing the protective cover 605. The push block 502 and the protective cover 605 together prevent the pellet 11 debris from splashing during the test. The lower pressing block 602 is concave inward on the side facing the upper pressing block 603. After the pressure detection test is completed, the inward concave design allows the center of gravity of the large fragments of the pellet 11 to rest on the inclined convex surfaces on both sides, preventing the fragments from falling to the outside of the lower pressing block 602 when the pressing device 6 is reset, and at the same time, preventing larger fragments from damaging the protective cover 605 when the pellet 11 is pressed down; the lower pressing block 602 is symmetrically provided with an inclined rib at both ends near the receiving cylinder 301, that is, the lower pressing block is concave inward. This design can prevent fine dust that falls on the lower pressing block 602 during the test from falling to the outside, avoiding a large amount of dust accumulation on the workbench 4. The upper crossbeam 601 is driven to move up and down by the electric cylinder in the power device 2, thereby driving the upper pressing block 603 to move up and down.

[0040] Furthermore, the pushing device 5 includes a pushing cylinder 501, a pushing block 502, a waste guide 503 and a waste box 504. The pushing block 502 is fixedly connected to the pushing cylinder 501, and the waste guide 503 is fixedly connected to the workbench 4. The pushing block 502 and the waste guide 503 are respectively located at the symmetrical ends of the lower pressure block 602. The pushing block 502 abuts against the lower pressure block 602, and the waste box 504 is detachably connected to the bottom of the workbench 4. The waste box 504 is located at the end of the waste guide 503 away from the lower pressure block 602.

[0041] During the material pushing process, the bottom of the pusher block 502 rests against the upper surface of the lower pressure block 602. Made of polytetrafluoroethylene (PTFE) or urethane foam, the pusher block 502 offers lubricity and abrasion resistance. It pushes test waste and dust onto the inclined waste guide 503, where they slide into the waste box 504. The pull handle 505 on the waste box 504 facilitates manual access. The waste guide 503 is fixedly connected to the notch of the workbench 4, located below the material receiving slope 305 and in close contact with the side of the lower pressure block 602. The waste box 504 can be placed under the workbench 4 like a drawer.

[0042] It can be understood that the height of the material receiving device 3 is smaller than the height of the material pushing device 7, and the feeding trough 801 of the feeding device 8 connected between the material receiving device 3 and the material pushing device 7 is in an inclined state. The inclined feeding trough 801 facilitates the pellets 11 to roll into the material receiving device 3.

[0043] In summary, the present application has the following beneficial effects: the pellet compressive strength detection device proposed in the present application adopts a combination of a material pushing device 7 and a corresponding sensor 902 at the discharge end 906 of the vibration plate 9 to separate the materials, thereby ensuring from the source that only a single pellet 11 is tested in each test; the pellet compressive strength detection device separates the material receiving function and the material pushing function to avoid the waste pellets 11 from jamming the equipment; the pellet compressive strength detection device adopts an inverted frame structure as a whole, with an integrated equipment design and a sophisticated overall structure.

[0044] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of this application.

Claims

1. A pellet compressive strength testing device, comprising a frame (1), a power device (2), a workbench (4) and an electric control box (10), wherein the workbench (4) is arranged on the top of the frame (1), and the electric control box (10) is fixed on the workbench (4) and is electrically connected to the power device (2), characterized in that: The workbench (4) is provided with a vibration plate (9), a feeding device (8) is provided at a discharge end (906) of the vibration plate (9), the feeding device (8) is fixed on the workbench (4), a pushing device (7) is provided directly below the space at the discharge end (906) facing one end of the workbench (4), a receiving device (3) is provided at the end of the feeding device (8) away from the vibration plate (9), a pressing device (6) is provided directly above the space of the receiving device (3), a pushing device (5) is provided at the side of the receiving device (3) away from the feeding device (8), and the pushing device (5), the pressing device (6) and the receiving device (3) are connected to each other. and the pushing device (7) are connected to the power device (2), characterized in that the material receiving device (3) comprises a material receiving cylinder (301), a left material receiving block (302) and a right material receiving block (303), the left material receiving block (302) and the right material receiving block (303) can be spliced ​​into a circular material receiving area (304) for placing the pellets (11) and a material receiving slope (305), the relatively high end of the material receiving slope (305) is connected to the feeding trough (801) of the feeding device (8), the left material receiving block (302) and the right material receiving block (303) are both connected to the material receiving cylinder (301); the pressing device (6 ) comprises an upper crossbeam (601), a force sensor (604), an upper pressing block (603), a protective cover (605) and a lower pressing block (602), wherein the lower pressing block (602) is fixed on the workbench (4), the upper crossbeam (601) is connected to the power device (2) via a connecting column (606), the connecting column (606) passes through the workbench (4) and is located around the lower pressing block (602), and the force sensor (604), the upper pressing block (603) and the protective cover (605) are fixedly connected in sequence on the side of the upper crossbeam (601) facing the lower pressing block (602); the pushing device (5) comprises a pushing air A cylinder (501), a pusher block (502), a waste guide plate (503) and a waste box (504), wherein the pusher block (502) is fixedly connected to the pusher cylinder (501), the waste guide plate (503) is fixedly connected to the workbench (4), the pusher block (502) and the waste guide plate (503) are respectively located at two symmetrical ends of the lower pressing block (602), the pusher block (502) abuts against the lower pressing block (602), the waste box (504) is detachably connected to the bottom of the workbench (4), and the waste box (504) is located at the end of the waste guide plate (503) away from the lower pressing block (602).

2. The pellet compressive strength testing device according to claim 1, characterized in that: The vibration plate (9) is provided with a ball lifting track (901), the discharge end (906) located at the edge of the vibration plate (9) is connected to the ball lifting track (901), and a blocking groove (90) is provided at the end of the discharge end (906).

3. The pellet compressive strength testing device according to claim 2, characterized in that: A first baffle (903) is provided at one end of the blocking groove (90) close to the feeding device (8); second baffles (904) are symmetrically provided on both sides of the blocking groove (90) adjacent to the first baffle (903); a counter-shooting sensor (902) is fixed on the outer side of the second baffle (904); counter-shooting holes (907) are symmetrically provided on the second baffle (904) corresponding to the counter-shooting sensor (902); and a material ejection notch (905) is provided on the bottom surface of the blocking groove (90) between the second baffles (904).

4. The pellet compressive strength testing device according to claim 3, characterized in that: The material pushing device (7) comprises a material pushing cylinder (701) and a material pushing block (702); the material pushing block (702) is fixed to the top of the material pushing cylinder (701) and faces the material pushing notch (905); and the material pushing cylinder (701) is fixed on the workbench (4).

5. The pellet compressive strength testing device according to claim 4, characterized in that: The height of the material receiving device (3) is smaller than the height of the material pushing device (7), and the feeding trough (801) of the material feeding device (8) connected between the material receiving device (3) and the material pushing device (7) is in an inclined state.

6. The pellet compressive strength testing device according to claim 1, characterized in that: A stretching handle (505) is integrally connected to the side of the waste box (504).

7. The pellet compressive strength testing device according to claim 1, characterized in that: The protective cover (605) is in a cubic shape, the side of the protective cover (605) facing the lower pressing block (602) has no bottom cover, and the side of the protective cover (605) facing the pushing block (502) is provided with a notch (607).

Images