Automatic crushing and classifying sample preparation equipment for phosphate rock

Abstract

The utility model discloses a kind of phosphorite sample preparation equipment of automatic crushing and reduction, solve the problem of insufficient manual reduction and low drying efficiency. Equipment includes blanking assembly, crushing assembly and reduction assembly, blanking assembly is equipped with vibration feeding structure, crushing assembly contains jaw crusher, and reduction assembly includes vertically rotating reduction cylinder, there is material containing structure, filter screen and moisture containing structure of conical bottom plate in cylinder. When reduction cylinder rotates, material is centrifuged and dewatered through filter cartridge, and containing structure reduces sample according to equal probability. The equipment realizes "feeding-crushing-reduction" automation, and the sampling error is reduced from ±8% to within ±2%, in line with national standard, while reducing material moisture, improving drying efficiency, single batch processing time is shortened, suitable for phosphorite detection and processing sampling.

Description

Technical Field

[0001] This utility model relates to the technical field of phosphate rock sample preparation equipment, and in particular to an automatic crushing and reducing phosphate rock sample preparation equipment. Background Technology

[0002] In the field of phosphate rock testing and processing, the degree of automation and precision of ore sample preparation directly affects the accuracy of test results. Currently, traditional phosphate rock sample preparation generally relies on manual operation, which presents a significant technical bottleneck.

[0003] Manual sample preparation requires multiple steps, including coarse crushing, reduction, drying, and fine grinding. A single batch takes 4-6 hours to process. Furthermore, during manual reduction, uneven particle distribution can lead to sample preparation errors of up to ±8%, which far exceeds the ±2% error standard required by GB / T13551-2014 "Sampling and Sample Preparation Methods for Phosphate Rocks and Phosphate Concentrates".

[0004] Although existing semi-automatic sample preparation equipment has partially replaced manual labor, such as using a jaw crusher for coarse crushing, the reduction process still requires manual operation using the quartering method, resulting in insufficient sample representativeness. During the drying process, manual turning of the ore can easily cause uneven evaporation of moisture, with a moisture content deviation of ±5%. Summary of the Invention

[0005] The technical problem to be solved by this utility model is that the material reduction process requires manual operation, which leads to insufficient sample representativeness and low drying efficiency.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an automatic crushing and reducing phosphate ore sample preparation equipment, including a feeding component, a crushing component and a reducing component arranged sequentially along the material flow direction. The feeding component is equipped with a vibrating feeding structure. The crushing component includes a jaw crusher. The reducing component includes a vertically rotating reducing cylinder. Material receiving structures are uniformly arranged around the axis inside the reducing cylinder. A filter screen is arranged between the material receiving structure and the reducing cylinder. A moisture receiving structure is arranged at the bottom inside the reducing cylinder.

[0007] Preferably, the vibrating feeding structure includes a hopper, a vibrator installed at the bottom of the hopper, and a discharge pipe connected to the bottom of the hopper. The feed inlet of the jaw crusher is located directly below the output end of the discharge pipe. A vertical frame is fixed to the side wall of the hopper, and the jaw crusher is fixed on the vertical frame. A mounting shaft is vertically rotatably installed inside the discharge pipe at the bottom of the jaw crusher. The shrinking cylinder is fixedly connected to the bottom end of the mounting shaft. A rotation drive component for the shrinking cylinder is installed on the vertical frame, and the mounting shaft is located on the axis of the discharge pipe.

[0008] Preferably, the driving component includes a drive motor fixed in the upright frame, a transmission shaft vertically rotatably connected to the upright frame, and a transmission structure connected between the transmission shaft and the reducing cylinder. The output shaft of the drive motor is connected to the transmission shaft. The transmission structure includes a driving gear fixedly connected to the bottom end of the transmission shaft and a driven gear ring coaxially mounted on the outer wall of the reducing cylinder. The driving gear meshes with the driven gear ring.

[0009] Preferably, a connecting sleeve is coaxially fixed at the top of the inner part of the reducing cylinder, the connecting sleeve is fitted onto the bottom end of the mounting shaft, and the mounting shaft and the connecting sleeve are connected by bolts.

[0010] Preferably, the outer wall of the connecting sleeve and the inner wall of the reducing cylinder are fixedly connected by a partition, and the partition is located between adjacent material receiving structures.

[0011] Preferably, the material receiving structure includes a hopper fixed to the bottom of the reducing cylinder, a filter cylinder coaxially fixed to the top of the hopper, a gap between the filter cylinder and the reducing cylinder, the bottom end of the hopper penetrating the bottom plate of the reducing cylinder, and a discharge lock plate detachably connected to the bottom end of the hopper.

[0012] Preferably, a vertical shaft is coaxially fixedly connected to the bottom end of the connecting sleeve, and a support plate is fixedly connected to the outer circumferential surface of the vertical shaft. The outer edge of the support plate is in contact with the outer wall of the filter cartridge and is fixedly connected to the filter cartridge. The support plate is correspondingly arranged with the filter cartridge.

[0013] Preferably, the water-containing structure includes the internal space of the constricted cylinder located below the top opening of the hopper, the bottom plate is generally conical, the lowest end of the bottom plate is connected to a drain pipe, and a drain lock plate is connected to the drain pipe.

[0014] This utility model provides an automatic crushing and reducing phosphate ore sample preparation device, which has the following beneficial effects.

[0015] 1. The sample reduction assembly achieves mechanical and uniform sample reduction through a vertically rotating reduction cylinder and its internal material holding structure. The evenly distributed pockets and filter cylinders within the reduction cylinder can distribute the crushed phosphate rock sample to each holding unit according to an equal probability principle, avoiding the uneven particle distribution problem caused by manual quartering operations. The sample preparation error is reduced from ±8% in manual operations to within ±2%, fully complying with the requirements of GB / T13551-2014 standard.

[0016] 2. As the material enters the reducing drum, its rotation, combined with the filter cartridge at the top of the drum, centrifugally dehydrates the material inside, reducing its moisture content and thus improving the efficiency of subsequent material drying. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0019] Figure 2 This is a front view of the internal structure of the reduction component in an embodiment of this utility model.

[0020] Figure 3 This is a top view of the reduction component in an embodiment of this utility model.

[0021] In the diagram: 1. Hopper; 2. Vibrator; 3. Feed pipe; 4. Jaw crusher; 5. Vertical frame; 6. Discharge pipe; 7. Shrinking cylinder; 8. Mounting shaft; 9. Drive motor; 10. Transmission shaft; 11. Drive gear; 12. Driven gear ring; 13. Filter cartridge; 14. Hopper; 15. Connecting sleeve; 16. Partition plate; 17. Vertical shaft; 18. Support plate; 19. Bottom plate; 20. Discharge lock plate; 21. Drainage lock plate. Detailed Implementation

[0022] like Figure 1-3 As shown, this utility model provides an automatic crushing and reducing phosphate ore sample preparation device, including a feeding component, a crushing component and a reducing component arranged sequentially along the material flow direction. The feeding component is equipped with a vibrating feeding structure. The crushing component includes a jaw crusher 4. The reducing component includes a vertically rotating reducing cylinder 7. Material receiving structures are evenly arranged around the axis inside the reducing cylinder 7. A filter screen 13 is arranged between the material receiving structure and the reducing cylinder 7. A moisture receiving structure is arranged at the bottom inside the reducing cylinder 7.

[0023] By adding material to the feeding assembly and controlling the feeding assembly to ensure uniform feeding, the material enters the jaw crusher 4. The jaw crusher 4 crushes the material, and the crushed material enters the shrinking drum 7. During the feeding process, the shrinking drum 7 is driven to rotate. During the rotation of the shrinking drum 7, not only can the material be evenly fed into the material receiving structure, but the material inside the shrinking drum 7 will also be centrifuged due to the rotation of the shrinking drum 7. During the centrifugation process, the water in the material can be removed. The removed water enters the water receiving structure. Finally, the material inside the material receiving structure is discharged.

[0024] like Figure 1As shown. The vibrating feeding structure includes a hopper 1, a vibrator 2 installed at the bottom of the hopper 1, and a discharge pipe 3 connected to the bottom of the hopper 1. The inlet of the jaw crusher 4 is located directly below the output end of the discharge pipe 3. A support frame 5 is fixed to the side wall of the hopper 1. The jaw crusher 4 is fixed on the support frame 5. A mounting shaft 8 is vertically rotatably installed inside the discharge pipe 6 at the bottom of the jaw crusher 4. The reducing cylinder 7 is fixedly connected to the bottom end of the mounting shaft 8. A rotation drive component for the reducing cylinder 7 is installed on the support frame 5. The mounting shaft 8 is located on the axis of the discharge pipe 6.

[0025] Material is fed through the side wall opening of hopper 1. Feeding can be done manually or using a conveyor belt. After the material enters the hopper 1, the vibrator 2 at the bottom controls the vibration of hopper 1, causing the material to flow evenly out of the feed pipe 3 and into the jaw crusher 4. The jaw crusher 4 crushes the material, and the crushed material enters the discharge pipe 6. The discharge pipe 6 is a circular pipe, and a mounting shaft 8 is rotatably connected at the axis of the discharge pipe 6. The dividing cylinder 7 is suspended through the mounting shaft 8. As the material flows out of the discharge pipe 6, the drive unit drives the dividing cylinder 7 to rotate. During the rotation of the dividing cylinder 7, the material is evenly distributed into the four material receiving structures, achieving uniform division of the material into four parts. The rotation ensures that the four parts of the material have the same composition.

[0026] like Figure 1 As shown. The driving component includes a drive motor 9 fixed inside the upright frame 5, a transmission shaft 10 vertically rotatably connected to the upright frame 5, and a transmission structure connecting the transmission shaft 10 and the reducing cylinder 7. The output shaft of the drive motor 9 is connected to the transmission shaft 10. The transmission structure includes a driving gear 11 fixedly connected to the bottom end of the transmission shaft 10 and a driven gear ring 12 coaxially mounted on the outer wall of the reducing cylinder 7. The driving gear 11 meshes with the driven gear ring 12. The output shaft of the drive motor 9 drives the transmission shaft 10 to rotate, the transmission shaft 10 drives the driving gear 11 to rotate, and the driving gear 11 drives the reducing cylinder 7 to rotate through the driven gear ring 10 it meshes with.

[0027] like Figure 2 and Figure 3 As shown. A connecting sleeve 15 is coaxially fixed at the top of the inner part of the shrinking cylinder 7. The connecting sleeve 15 is fitted onto the bottom end of the mounting shaft 8, and the mounting shaft 8 and the connecting sleeve 15 are connected by bolts. When installing the shrinking cylinder 7, the shrinking cylinder 7 is fitted onto the mounting shaft 8, and the shrinking cylinder 7 is locked onto the mounting shaft 8 by bolts.

[0028] like Figure 3As shown. The outer wall of the connecting sleeve 15 is fixedly connected to the inner wall of the reducing cylinder 7 by a partition 16, which is located between adjacent material receiving structures. By dividing the top opening of the reducing cylinder 7 into four equal parts by the partition 16 to form a limiting structure, the mutual flow of materials within the material receiving structure can be prevented.

[0029] like Figure 2 and Figure 3 As shown. The material receiving structure includes a hopper 14 fixed to the bottom of the reducing cylinder 7. A filter cylinder 13 is coaxially fixed to the top of the hopper 14, and a gap is provided between the filter cylinder 13 and the reducing cylinder 7. The bottom end of the hopper 14 penetrates the bottom plate 19 of the reducing cylinder 7, and a discharge lock plate 20 is detachably connected to the bottom end of the hopper 14. As the bottom material receiving structure, the hopper 14 can prevent small-diameter materials from passing through the filter cylinder 13 and entering the outside of the material receiving structure after entering the hopper 14, thus ensuring the stability of the internal materials. The top filter cylinder 13 is used to receive large-diameter materials, and dehydration can be carried out through the filter cylinder 13 during the material entry and reception process, thereby improving the efficiency of subsequent drying.

[0030] like Figure 2 As shown, to enhance the strength of the filter cartridge 13, a vertical shaft 17 is coaxially fixedly connected to the bottom end of the connecting sleeve 15. A support plate 18 is fixedly connected to the outer circumferential surface of the vertical shaft 17. The outer edge of the support plate 18 is fitted against the outer wall of the filter cartridge 13 and fixedly connected to the filter cartridge 13. The support plate 18 and the filter cartridge 13 are correspondingly arranged. There is a 45° angle between the support plate 18 and the partition plate 16. The support plate 18 is fitted against the outer wall of the filter cartridge 13, thereby improving the structural strength of the filter cartridge 13 and preventing deformation.

[0031] like Figure 2 As shown. The moisture-containing structure includes the internal space of the constricted cylinder 7 located below the top opening of the hopper 14. The bottom plate 19 is generally conical, and a drain pipe is connected to the lowest end of the bottom plate 19. A drain lock plate 21 is connected to the drain pipe. The material in the material-containing structure is discharged by opening the discharge lock plate 20. The water in the moisture-containing structure collects in the middle of the bottom plate 19 and is discharged by opening the drain lock plate 21.

Claims

1. An automatic crushing and reducing phosphate ore sample preparation device, characterized in that: It includes a feeding assembly, a crushing assembly and a shrinking assembly arranged sequentially along the material flow direction. The feeding assembly is equipped with a vibrating feeding structure. The crushing assembly includes a jaw crusher (4). The shrinking assembly includes a shrinking cylinder (7) arranged vertically and rotatingly. A material receiving structure is evenly arranged around the axis inside the shrinking cylinder (7). A filter screen (13) is arranged between the material receiving structure and the shrinking cylinder (7). A moisture receiving structure is arranged at the bottom inside the shrinking cylinder (7).

2. The automatic crushing and reducing phosphate ore sample preparation equipment as described in claim 1, characterized in that: The vibrating feeding structure includes a hopper (1), a vibrator (2) installed at the bottom of the hopper (1), and a feed pipe (3) connected to the bottom of the hopper (1). The feed inlet of the jaw crusher (4) is located directly below the output end of the feed pipe (3). A frame (5) is fixed on the side wall of the hopper (1). The jaw crusher (4) is fixed on the frame (5). An installation shaft (8) is vertically rotatably installed inside the discharge pipe (6) at the bottom of the jaw crusher (4). The shrinking cylinder (7) is fixedly connected to the bottom end of the installation shaft (8). The rotating drive of the shrinking cylinder (7) is installed on the frame (5). The installation shaft (8) is located on the axis of the discharge pipe (6).

3. The automatic crushing and reducing phosphate ore sample preparation equipment as described in claim 1, characterized in that: The driving component includes a drive motor (9) fixed inside the frame (5), a transmission shaft (10) vertically rotatably connected to the frame (5), and a transmission structure connected between the transmission shaft (10) and the shrinking cylinder (7). The output shaft of the drive motor (9) is connected to the transmission shaft (10) for transmission. The transmission structure includes a drive gear (11) fixedly connected to the bottom end of the transmission shaft (10) and a driven gear ring (12) coaxially mounted on the outer wall of the shrinking cylinder (7). The drive gear (11) meshes with the driven gear ring (12).

4. The automatic crushing and reducing phosphate ore sample preparation equipment as described in claim 2, characterized in that: A connecting sleeve (15) is coaxially fixed at the top of the inner part of the shrinking cylinder (7). The connecting sleeve (15) is fitted onto the bottom end of the mounting shaft (8). The mounting shaft (8) and the connecting sleeve (15) are connected by bolts.

5. The automatic crushing and reducing phosphate ore sample preparation equipment as described in claim 4, characterized in that: The outer wall of the connecting sleeve (15) is fixedly connected to the inner wall of the shrinking cylinder (7) by a partition (16), and the partition (16) is located between adjacent material receiving structures.

6. The automatic crushing and reducing phosphate ore sample preparation equipment as described in claim 5, characterized in that: The material receiving structure includes a hopper (14) fixed at the bottom of the shrinking cylinder (7), a filter cylinder (13) coaxially fixedly connected to the top of the hopper (14), a gap between the filter cylinder (13) and the shrinking cylinder (7), the bottom end of the hopper (14) penetrating the bottom plate (19) of the shrinking cylinder (7), and a discharge lock plate (20) detachably connected to the bottom end of the hopper (14).

7. The automatic crushing and reducing phosphate rock sample preparation equipment as described in claim 6, characterized in that: The bottom end of the connecting sleeve (15) is coaxially fixedly connected to a vertical shaft (17), and a support plate (18) is fixedly connected to the outer circumferential surface of the vertical shaft (17). The outer edge of the support plate (18) is in contact with the outer wall of the filter cylinder (13) and is fixedly connected to the filter cylinder (13). The support plate (18) is correspondingly set to the filter cylinder (13).

8. The automatic crushing and reducing phosphate rock sample preparation equipment as described in claim 6, characterized in that: The water-containing structure includes the internal space of the shrinking cylinder (7) located below the top opening of the sump (14), the bottom plate (19) is generally conical, the lowest end of the bottom plate (19) is connected to a drain pipe, and a drain lock plate (21) is connected to the drain pipe.

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