A rotating pellet falling strength detection device and a method of using the same

Abstract

The present invention relates to a rotating pellet drop strength detection device and a method for using the same, wherein the rotating pellet drop strength detection device comprises a fixed frame and a rotating frame, the rotating frame is fixed with two loaders respectively located on the upper and lower sides of a transverse hinge shaft, the loaders are provided with a plurality of tapered holes extending vertically, the tapered holes on the two loaders are respectively coaxially arranged, the tapered hole of the upper loaders has a large diameter end facing downward, and the tapered hole of the lower loaders has a large diameter end facing upward; the loaders are provided with a plug hole extending in the horizontal direction and crossing each tapered hole, a plug plate is inserted in the plug hole of the upper loaders, the pellets are located in the tapered holes and supported on the upper surface of the plug plate. The present invention realizes the drop strength detection of multiple pellets at one time by arranging a plurality of tapered holes on the loaders, thereby greatly improving the detection efficiency; the two loaders are fixedly connected to the rotating frame, so that the distance between the two loaders is fixed and unchanged, thereby ensuring that the distance of the pellets falling each time is consistent.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgical pellet detection, and in particular to a rotary pellet falling strength detection device and a use method thereof. Background Art

[0002] The pellet drop strength is an important indicator to measure the impact resistance of pellets during transportation, and is also the basis for the number of pellet rotations allowed in the design of the pellet plant. According to the different requirements of the pellet plant for pellets, the pellet drop strength includes wet ball drop strength and dry ball drop strength. The detection method is: take 30 pellets of a fixed size range, and let them fall freely from 0.5m to a 5mm thick steel plate until cracks appear in the pellets. The average value is taken as the indicator of the green ball drop strength, and its unit is times / 0.5m.

[0003] At present, pellet plants generally use the method of full manual operation to test the falling strength of pellets. Only one pellet can be tested at a time. It takes 30 repeated tests to complete the falling strength test of a pellet sample. If there are multiple groups of pellets that need to be tested for falling strength, it will take a long time to test. In addition, during manual operation, the consistency of the falling distance of the pellets is poor, which has a certain adverse effect on the accuracy of the test results. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a rotary pellet falling strength detection device and a method for using the same, which ensures that the pellet falls a consistent distance each time and greatly improves the detection efficiency.

[0005] The present invention is achieved through the following technical scheme, which provides a rotating pellet falling strength detection device, including a fixed frame and a rotating frame rotatably connected to the fixed frame through a transverse hinge shaft, the rotating frame can rotate around the axis of the transverse hinge shaft, the rotating frame is fixedly provided with two loaders respectively located on the upper and lower sides of the transverse hinge shaft, the loaders are provided with a plurality of tapered holes extending vertically, the inner diameter of the large diameter end of the tapered hole is larger than the outer diameter of the pellet, and the inner diameter of the small diameter end of the tapered hole is smaller than the outer diameter of the pellet, the tapered holes on the two loaders are respectively coaxially arranged, the large diameter end of the tapered hole of the upper loader faces downward, and the large diameter end of the tapered hole of the lower loader faces upward, the pellets dropped from the loader located above fall into the tapered hole of the loader located below by free fall; the loader is provided with an insertion hole extending in the horizontal direction and crossing the tapered holes, the insertion hole of the upper loader is provided with an insertion plate, the pellets are located in the tapered hole and supported on the upper surface of the insertion plate.

[0006] This solution provides two loaders, one for storing multiple pellets to be tested and the other for receiving the fallen pellets. When in use, the rotating frame is turned to a vertical direction so that the two loaders are located in the same vertical plane. After the pellets fall once, the positions and functions of the two loaders are interchanged by adjusting the position of the plug plate and rotating the rotating frame 180°. Since the two loaders are relatively fixed, the distance that the pellets fall each time is guaranteed to be consistent. By providing multiple tapered holes on the loaders, the number of pellets in each operation is increased, thereby improving the detection efficiency.

[0007] As an optimization, a level is installed on the loader, and the level is located on the surface where the large diameter end of the tapered hole is located. This optimization solution facilitates the operator to judge whether the loader is turned to a horizontal state by setting a level on the loader, further ensuring that the two loaders are located in the same vertical plane, thereby improving the accuracy of detection.

[0008] As an optimization, it also includes a base and an adjustable height walking wheel installed on the base, the fixing frame is fixed to the upper surface of the base, and a level is installed on the upper surface of the base. This optimization scheme facilitates the overall movement of the device by setting the walking wheel, and the height spacing between the walking wheel and the base is adjustable, so as to facilitate the leveling of the base and the leveling of the loader.

[0009] As an optimization, the fixing frame includes two support plates arranged opposite to each other, and bearings adapted to the transverse hinge shaft are installed on the support plates. The fixing frame of this optimization solution uses the support plates as support, which has a simple structure and is convenient for ensuring the vertical relationship between the fixing frame and the base, thereby reducing the difficulty of manufacturing. By setting the bearings, the mutual wear between the transverse hinge shaft and the support plates is reduced, and the service life is extended.

[0010] As an optimization, the rotating frame includes two parallel vertical rods, the outer side surfaces of the center positions of the two vertical rods are fixedly connected to the transverse hinge shaft, and the two loaders are fixedly connected to the inner side surfaces of the two vertical rods. The rotating frame of this optimization solution has a simple structure, reduces the labor intensity of manual operation, and reduces the blocking area of ​​the loaders, making it convenient to place and remove the pellets.

[0011] As an optimization, a handle is fixedly provided on the side of the loader parallel to the transverse hinge axis. This optimization solution facilitates the staff to rotate the rotating frame by installing a handle on the loader, thereby improving the detection efficiency.

[0012] The present invention also provides a method for using the above-mentioned rotating pellet falling strength detection device, comprising the following steps:

[0013] Step 1: Move the rotary pellet drop strength testing device to the support table, adjust the height of the running wheels, and make the level gauge on the loader in a horizontal state;

[0014] Step 2: Place the selected pellets in the conical holes of the lower loader respectively, and insert the insert plate into the insert hole of the lower loader so that the insert plate covers the pellets of the lower loader;

[0015] Step 3: Grab the handle on the dropper and rotate the rotating frame 180°, so that the loader with the plug-in plate is turned to the top of the other loader, and the positions of the upper and lower loaders are interchanged, and the level on the loader is in a horizontal state; then pull out the plug-in plate, and the pellets in the upper loader fall vertically into the conical hole of the lower loader under the action of their own gravity; observe the pellets in the conical hole one by one, take out the cracked pellets, and record the number of cracked pellets. After the inspection is completed, insert the plug-in plate into the plug hole of the lower loader;

[0016] Step 4: Repeat step 3 until all the balls have cracks.

[0017] The beneficial effects of the present invention are as follows: by arranging a plurality of conical holes on the loader, the falling strength detection of a plurality of pellets can be completed at one time, thereby greatly improving the detection efficiency; the two loaders are fixedly connected to the rotating frame, so that the distance between the two loaders is fixed, thereby ensuring that the distance of the pellets falling each time is consistent. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a structural front view of the loader of the present invention;

[0020] Figure 3 It is a top view of the structure of the loader of the present invention;

[0021] As shown in the figure:

[0022] 1. Handle, 2. Loader, 3. Socket, 4. Level, 5. Rotating frame, 6. Bearing, 7. Horizontal hinge, 8. Fixed frame, 9. Insert plate, 10. Base, 11. Adjustable height walking wheel, 12. Conical hole. DETAILED DESCRIPTION

[0023] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0024] like Figure 1A rotating pellet falling strength detection device is shown, comprising a base 10, a fixed frame 8, and a rotating frame 5 rotatably connected to the fixed frame via a transverse hinge shaft 7. A level is installed on the upper surface of the base, and 3 to 4 adjustable height walking wheels 11 are installed on the lower surface of the base. The adjustable height walking wheels 11 adopt existing technology, and the direction of the walking wheels and the distance from the base can be fine-tuned, which is convenient for moving the position of the detection device and adjusting the level of the upper surface of the base.

[0025] Two loaders 2 are fixedly arranged on the rotating frame 5, which are respectively located on the upper and lower sides of the transverse hinge shaft. A plurality of tapered holes 12 are opened on the loader 2 and penetrate vertically. The inner diameter of the large diameter end of the tapered hole is larger than the outer diameter of the pellet, and the inner diameter of the small diameter end of the tapered hole is smaller than the outer diameter of the pellet. The tapered holes on the two loaders are coaxially arranged, with the large diameter end of the tapered hole of the upper loader facing downward, and the large diameter end of the tapered hole of the lower loader facing upward.

[0026] The loader is provided with a plug hole 3 extending in the horizontal direction and crossing each tapered hole. A plug plate 9 is inserted in the plug hole of the upper loader. The plug plate can be freely inserted and withdrawn in the plug hole. The pellets are located in the tapered hole and supported on the upper surface of the plug plate. A level 4 is installed on the loader, and the level is located on the surface where the large diameter end of the tapered hole is located. A handle 1 is fixed on the side of the loader parallel to the horizontal hinge axis.

[0027] The fixing frame is fixed to the upper surface of the base. Specifically, the fixing frame includes two supporting plates arranged opposite to each other, and bearings 6 adapted to the transverse hinge shaft are installed on the supporting plates. The bearings in this embodiment are ball bearings.

[0028] The rotating frame includes two parallel vertical rods, the outer side surfaces of the center positions of the two vertical rods are fixedly connected to the transverse hinge shaft, the two loaders are fixedly connected to the inner side surfaces of the two vertical rods, the transverse hinge shaft and the vertical rods are perpendicular to each other, and the transverse hinge shaft and the vertical rods are both made of steel.

[0029] Specifically, the base is made of steel or cement, and is in the shape of a cube, a cuboid or a prism, which plays a role in stabilizing the center of gravity of the entire device. The support plate is narrow at the top and wide at the bottom, and is made of steel. The thickness of the support plate is 10mm~20mm, and the support plate is perpendicular to the upper surface of the base. The loader is made of steel, and the upper and lower surfaces are parallel to each other. The thickness is 20mm~50mm. The number of conical holes is 30, which are distributed in a matrix. The inner diameter of the large diameter end of the conical hole is 20mm~30mm, and the inner diameter of the small diameter end is 5mm~7mm; the end face of the small diameter end of the conical hole is parallel to the surface of the loader away from the large diameter end of the conical hole, and the distance is 5mm~10mm. The height of the plug hole is 2mm~5mm, and the plug plate is made of 1mm~4mm steel plate or hard plastic. The upper and lower surfaces of the plug plate are parallel to each other. After the plug plate is inserted into the plug hole on the loader, all the conical holes on the loader can be covered.

[0030] After the insert plate is inserted into the insertion hole of one loader, the distance from the surface of the insert plate facing the small diameter end of the tapered hole of the loader to the end surface of the small diameter end of the tapered hole of another loader is 500 mm.

[0031] The method for using the rotating pellet falling strength detection device of this embodiment includes the following steps:

[0032] Step 1: Move the rotary pellet drop strength testing device to the support table, adjust the height of the running wheels, and make the level gauge on the loader in a horizontal state;

[0033] Step 2: Place the selected 30 pellets in the conical holes of the lower loader respectively, and insert the insert plate into the insert hole of the lower loader so that the insert plate covers the pellets of the lower loader;

[0034] Step 3: Grab the handle on the upper feeder and rotate the rotating frame 180°, so that the feeder with the plug-in plate is turned to the top of the other feeder, and the upper and lower feeders are interchanged. The level gauge on the feeder is in a horizontal state, and then the plug-in plate is pulled out. The pellets in the upper feeder fall vertically into the conical hole of the lower feeder under the action of their own gravity. Observe the pellets in the conical hole one by one, take out the pellets with cracks, and record the number of pellets with cracks. After the inspection is completed, insert the plug-in plate into the plug hole of the lower feeder.

[0035] Step 4: Repeat step 3 until all the balls have cracks.

[0036] The present invention can complete the falling strength test of a group of pellets at one time, greatly improving the work efficiency; the falling distance of the pellets is fixed each time, eliminating human errors and making the test results more accurate.

[0037] Of course, the above description is not limited to the above examples. Technical features not described in the present invention can be achieved by or by using existing technologies, which will not be described here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention, and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A rotating pellet falling strength detection device, characterized in that: It comprises a fixed frame (8) and a rotating frame (5) rotatably connected to the fixed frame via a transverse hinge shaft (7), wherein the rotating frame (5) is fixedly provided with two loaders (2) respectively located on the upper and lower sides of the transverse hinge shaft, and the loaders (2) are provided with a plurality of tapered holes (12) extending vertically, wherein the inner diameter of the tapered hole at the large diameter end is larger than the outer diameter of the pellet, and the inner diameter of the tapered hole at the small diameter end is smaller than the outer diameter of the pellet, and the tapered holes on the two loaders are respectively coaxially arranged, wherein the tapered hole at the large diameter end of the upper loaders faces downward, and the tapered hole at the large diameter end of the lower loaders faces upward; The loader is provided with an insertion hole (3) extending in the horizontal direction and crossing each conical hole, and an insertion plate (9) is inserted into the insertion hole of the upper loader, and the pellets are located in the conical hole and supported on the upper surface of the insertion plate; A level gauge (4) is installed on the loader, and the level gauge is located on the surface where the large diameter end of the tapered hole is located; It also includes a base (10) and height-adjustable running wheels (11) mounted on the base, the fixing frame is fixed to the upper surface of the base, and a level is mounted on the upper surface of the base.

2. A rotating pellet falling strength detection device according to claim 1, characterized in that: The fixing frame comprises two supporting plates arranged opposite to each other, and bearings (6) adapted to the transverse hinge shaft are mounted on the supporting plates.

3. A rotating pellet falling strength detection device according to claim 2, characterized in that: The rotating frame comprises two vertical rods parallel to each other, the outer side surfaces at the center positions of the two vertical rods are fixedly connected to the transverse hinge shaft, and the two loaders are fixedly connected to the inner side surfaces of the two vertical rods.

4. The rotating pellet falling strength detection device according to claim 1, characterized in that: A handle (1) is fixedly provided on the side of the loader parallel to the transverse hinge axis.

5. A method for using the rotating pellet falling strength detection device according to any one of claims 1 to 4, characterized in that: The steps include: Step 1: Move the rotary pellet drop strength testing device to the support table, adjust the height of the running wheels, and make the level gauge on the loader in a horizontal state; Step 2: Place the selected pellets in the conical holes of the lower loader respectively, and insert the insert plate into the insert hole of the lower loader so that the insert plate covers the pellets in the lower loader; Step 3: Rotate the rotating frame to make the loader with the plug-in plate rotate to the top of the other loader, then pull out the plug-in plate, and the pellets in the upper loader fall vertically into the conical hole of the lower loader under the action of their own gravity; observe the pellets in the conical hole one by one, take out the pellets with cracks, and record the number of pellets with cracks. After the inspection is completed, insert the plug-in plate into the plug hole of the lower loader; Step 4: Repeat step 3 until all the balls have cracks.

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