A ton-bag concentrate sampling device for use during the freezing period in extremely cold regions

Abstract

This utility model relates to the field of concentrate powder sampling technology, specifically to a ton-bag concentrate powder sampling device for use during the freezing period in extremely cold regions. One end of the sampling probe is provided with an incised perforated tooth pattern, and the other end is provided with an annular limiting buckle. The sampling probe has a strip-shaped pressure relief groove area, which is arranged along the axial direction of the sampling probe. Two anti-freeze hydraulic cylinders are arranged in parallel. The piston rod ends of the two anti-freeze hydraulic cylinders are connected to the push plate, and the bases of the two anti-freeze hydraulic cylinders are mounted on the fixed base plate. A movable sampling frame is provided between the two anti-freeze hydraulic cylinders, one end of which is connected to the push plate. The movable sampling frame has multiple pull-out slots that match the annular limiting buckle. Both the push plate and the fixed base plate have grooves that allow the sampling probe to pass through. This utility model enables efficient, accurate, and reliable sampling of ton-bag concentrate powder in extremely cold regions.

Description

Technical Field

[0001] This utility model relates to the field of concentrate powder sampling technology, specifically to a ton bag concentrate powder sampling device for use during the freezing period in extremely cold regions. Background Technology

[0002] In the frigid border regions of northern China, winters are long and harsh, with average temperatures often dropping to -35°C or even lower. Under these extreme temperatures, the concentrate powder stored in ton bags freezes due to the freezing of its moisture content, forming a hardened body with high compressive strength, typically reaching 10-20 MPa. This unique physical state poses a significant challenge to traditional sampling methods in extremely cold regions, making it difficult to effectively obtain representative concentrate powder samples.

[0003] Currently, steel rods are commonly used for sampling. However, at temperatures as low as -35°C, the brittleness of these rods increases significantly, making them prone to breakage. This results in extremely limited effective sampling depth, typically only 5-10 cm, barely reaching the surface of the concentrate in the ton bag. Consequently, the samples have very poor representativeness, leading to significant deviations in test results and failing to meet practical requirements. Electric drill sampling also has numerous drawbacks. The high temperatures generated by friction during drilling (reaching 80-120°C) can cause localized melting of the frozen ore powder, resulting in significant deviations in moisture content. Furthermore, it is difficult to extract deeper ore powder, leading to severely insufficient sample representativeness and making it difficult to gain acceptance from trading parties. The smelter-based bag-breaking sampling method requires breaking the frozen ore powder with a breaker hammer within the smelter before spreading it out for sampling. This process not only delays testing and affects trading efficiency but also disrupts the original distribution of the concentrate powder, resulting in poor sample representativeness. Additionally, the high labor and machinery costs increase sampling costs. Utility Model Content

[0004] To address the problems of difficulty in sampling during the freezing period in extremely cold regions and poor representativeness of the samples in the existing technologies, this utility model provides a ton bag concentrate powder sampling device for the freezing period in extremely cold regions.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A ton-bag concentrate sampling device for use during the freezing period in extremely cold regions includes a sampling probe and a hydraulic probe puller. One end of the sampling probe has internally tangential studs, and the other end has an annular limiting buckle. The end of the sampling probe with the annular limiting buckle is connected to an electric pick adapter. The sampling probe has a strip-shaped pressure relief groove area, which is arranged along the axial direction of the sampling probe. The hydraulic probe puller includes reinforcing ribs, two antifreeze hydraulic cylinders, a push plate, a movable sampling frame, a probe puller slot, and a fixed base plate. The two antifreeze cylinders... The pressure cylinders are arranged in parallel, and a reinforcing rib is provided between the two antifreeze hydraulic cylinders; the piston rod ends of the two antifreeze hydraulic cylinders are connected to the push plate, and the bases of the two antifreeze hydraulic cylinders are set on the fixed base plate; a movable sampling frame is provided between the two antifreeze hydraulic cylinders, one end of the movable sampling frame is connected to the push plate, and the movable sampling frame is provided with a plurality of pull-out slots that match the annular limiting buckle; both the push plate and the fixed base plate are provided with grooves that allow the sampling rod to pass through.

[0007] Furthermore, the included angle of the tooth tip of the internally incised plum blossom tooth is 70-74°, the cutting edge angle is 25-30°, and the ratio of tooth depth to tooth width is 1:1.0-1.5.

[0008] Furthermore, the starting end of the strip-shaped pressure relief groove area is 2.0-3.0cm from the root of the incised plum blossom tooth, the groove width is 1.2-1.5cm, and the groove length is 60-65cm.

[0009] Furthermore, both the push plate and the fixed base plate are provided with the anti-slip handle.

[0010] Furthermore, the pull-out groove is a semi-circular or U-shaped groove, the inner diameter of the pull-out groove matches the outer diameter of the annular limiting buckle, and the inner wall of the pull-out groove is provided with anti-slip texture.

[0011] Furthermore, the antifreeze hydraulic cylinder is connected to the fixed base plate by bolts.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention provides a ton-bag concentrate sampling device for use during the freezing period in extremely cold regions. One end of the sampling probe features an internally shaped perforated tooth design, significantly enhancing the engagement between the probe and the frozen concentrate, allowing for more efficient cutting into the concentrate under electric hammer drive and improving sampling efficiency. An axially positioned strip-shaped pressure relief groove releases accumulated air pressure within the frozen material during sampling, reducing the risk of probe breakage due to pressure. In the hydraulic probe puller, two parallel anti-freeze hydraulic cylinders provide stable power for the pull process, and reinforcing ribs between the cylinders enhance the overall structural strength, ensuring stable operation in extremely cold environments. Multiple pull slots on the movable sampling frame allow for flexible adaptation of the sampling probe, meeting different pull requirements. Grooves on the push plate and fixed base plate facilitate smooth probe operation and reduce resistance. This invention enables efficient, accurate, and reliable sampling of ton-bag concentrate in extremely cold regions. Attached Figure Description

[0014] The embodiments of this utility model will be further described below with reference to the accompanying drawings, wherein:

[0015] Figure 1 This diagram illustrates a structural schematic of an embodiment of a ton-bag concentrate sampling device used during the freezing period in extremely cold regions.

[0016] Figure 2 It shows Figure 1 A schematic diagram of the rear structure of the embodiment;

[0017] Figure descriptions: 1-Sampling rod, 2-Hydraulic rod puller, 3-Internal incision studs, 4-Reinforcing rib, 5-Annular limit buckle, 6-Electric pick adapter, 7-Antifreeze hydraulic cylinder, 8-Push plate, 9-Moving sampling frame, 10-Rod puller slot, 11-Fixed base plate, 12-Handle. Detailed Implementation

[0018] 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 specific 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 scope of the present utility model.

[0019] Reference Appendix Figure 1-2A ton-bag concentrate sampling device for use during the freezing period in extremely cold regions includes a sampling probe 1 and a hydraulic probe puller 2. One end of the sampling probe 1 is provided with an incised perforated tooth pattern 3, and the other end is provided with an annular limiting buckle 5. The end of the sampling probe 1 with the annular limiting buckle 5 is connected to an electric pick adapter 6. The sampling probe 1 is provided with a strip-shaped pressure relief groove area, which is arranged along the axial direction of the sampling probe 1. The hydraulic probe puller 2 includes a reinforcing rib 4, two antifreeze hydraulic cylinders 7, a push plate 8, a movable sampling frame 9, a probe puller slot 10, and a fixed base plate 1. 1; Two antifreeze hydraulic cylinders 7 are arranged in parallel, and a reinforcing rib 4 is provided between the two antifreeze hydraulic cylinders 7; The piston rod ends of the two antifreeze hydraulic cylinders 7 are connected to the push plate 8, and the bases of the two antifreeze hydraulic cylinders 7 are set on the fixed base plate 11; A movable sampling frame 9 is provided between the two antifreeze hydraulic cylinders 7, one end of the movable sampling frame 9 is connected to the push plate 8, and the movable sampling frame 9 is provided with multiple pull-out slots 10 that match the annular limit buckle 5; Both the push plate 8 and the fixed base plate 11 are provided with grooves that allow the sampling rod 1 to pass through.

[0020] In one embodiment of this utility model, the included angle of the tooth tip of the internally tangent plum blossom tooth 3 is 70-74°, the cutting edge angle is 25-30°, and the ratio of tooth depth to tooth width is 1:1.0-1.5. The internally tangent plum blossom tooth design can significantly reduce insertion resistance, which is conducive to quickly penetrating the frozen mineral powder in the ton bag. At the same time, the internally tangent plum blossom tooth has a uniform stress distribution when under force, which can effectively reduce local stress concentration, reduce the risk of fracture, and improve the service life and reliability of the overall structure.

[0021] In one embodiment of this invention, the starting end of the strip-shaped pressure relief groove is 2.0-3.0 cm from the root of the three internally tangential studs, the groove width is 1.2-1.5 cm, and the groove length is 60-65 cm. The strip-shaped pressure relief groove helps to release the compressed air pressure accumulated inside the sampling rod tube in a timely manner, ensuring the sampling depth. The above-mentioned groove dimensions can maintain the strength and rigidity of the overall structure of the rod while effectively relieving pressure, avoiding bending or breakage during sampling, thereby significantly improving the durability and service life of the sampling tool.

[0022] In one embodiment of this utility model, both the push plate 8 and the fixed base plate 11 are provided with anti-slip handles 12.

[0023] In one embodiment of this utility model, the pull-out slot 10 is a semi-circular or U-shaped slot, the inner diameter of the pull-out slot 10 matches the outer diameter of the annular limiting buckle 5, and the inner wall of the pull-out slot 10 is provided with anti-slip texture.

[0024] In one embodiment of this utility model, the antifreeze hydraulic cylinder 7 and the fixed base plate 11 are connected by bolts, so that the antifreeze hydraulic cylinder 7 and the fixed base plate 11 can be adjusted up and down within a small range of angles, so that the antifreeze hydraulic cylinder 7 and the fixed base plate 11 can apply a balanced and stable pressure on the surface of the ton bag.

[0025] In actual operation, the sampling probe 1 is first fixed to the electric hammer via the electric hammer adapter 6, and its height and angle are adjusted according to the position of the ton bag on site. Then, the electric hammer is started, and under high power drive, the internally cut five-lobed plum blossom teeth 3 quickly penetrate into the frozen concentrate powder. During the penetration process, the pressure relief groove area 4 set along the axial direction can release the air pressure generated by the pressure accumulation in the frozen body in an instant, ensuring that the sampling probe 1 enters smoothly. After the sampling probe 1 has entered the ton bag 60-65cm, the electric hammer is turned off, and the electric hammer and sampling probe 1 are disassembled. The fixed base plate 11 of the hydraulic rod puller 2 is placed on the surface of the concentrate powder, supporting the ton bag. The annular limit buckle 5 is locked with the rod pull groove 10 close to the annular limit buckle 5. The antifreeze hydraulic cylinder 7 is activated. The piston rod of the antifreeze hydraulic cylinder 7 pushes the push plate 8 to move the moving sampling frame 9 in the opposite direction to the fixed base plate 11, pulling out the sampling rod 1. When the moving distance of the moving sampling frame 9 is insufficient to completely pull out the sampling rod 1, the antifreeze hydraulic cylinder 7 then locks the annular limit buckle 5 with the rod pull groove 10 far from the annular limit buckle 5, and pulls out the rod again, thereby achieving complete removal of the sampling rod 1.

[0026] Actual tests show that in the extremely cold environment of -35℃ at the Manzhouli port, the device has a sampling success rate of nearly 100%, a single operation time of less than 3 minutes, a sampling depth of no less than 60cm, and a deviation rate of ≤0.5%.

[0027] This invention provides a ton-bag concentrate sampling device for use during the freezing period in extremely cold regions. One end of the sampling probe features an internally shaped perforated tooth design, significantly enhancing the engagement between the probe and the frozen concentrate, allowing for more efficient cutting into the concentrate under electric hammer drive and improving sampling efficiency. An axially positioned strip-shaped pressure relief groove releases accumulated air pressure within the frozen material during sampling, reducing the risk of probe breakage due to pressure. In the hydraulic probe puller, two parallel anti-freeze hydraulic cylinders provide stable power for the pull process, and reinforcing ribs between the cylinders enhance the overall structural strength, ensuring stable operation in extremely cold environments. Multiple pull slots on the movable sampling frame allow for flexible adaptation of the sampling probe, meeting different pull requirements. Grooves on the push plate and fixed base plate facilitate smooth probe operation and reduce resistance. This invention enables efficient, accurate, and reliable sampling of ton-bag concentrate in extremely cold regions.

[0028] The foregoing description describes some exemplary embodiments of this utility model. It is understood that the above embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model. The features in these embodiments can be recombine in a suitable manner, and the resulting solutions are still within the scope of protection claimed by this utility model. Based on the above embodiments, all other embodiments obtained by those skilled in the art without inventive effort, that is, all modifications, equivalent substitutions, and improvements made within the spirit and principles of this application, fall within the scope of protection claimed by this utility model.

Claims

1. A ton-bag concentrate powder sampling device for use during the freezing period in extremely cold regions, characterized in that, The device includes a sampling rod (1) and a hydraulic rod puller (2); one end of the sampling rod (1) is provided with an incised perforated tooth (3), and the other end is provided with an annular limiting buckle (5). The end of the sampling rod (1) with the annular limiting buckle (5) is connected to an electric pick adapter (6); the sampling rod (1) is provided with a strip-shaped pressure relief groove area, which is arranged along the axial direction of the sampling rod (1); the hydraulic rod puller (2) includes a reinforcing rib (4), two antifreeze hydraulic cylinders (7), a push plate (8), a moving sampling frame (9), a rod puller slot (10), and a fixed base plate (11); the two antifreeze hydraulic cylinders (7) are arranged in parallel. Furthermore, a reinforcing rib (4) is provided between the two antifreeze hydraulic cylinders (7); the piston rod ends of the two antifreeze hydraulic cylinders (7) are connected to the push plate (8), and the base of the two antifreeze hydraulic cylinders (7) is set on the fixed base plate (11); a movable sampling frame (9) is provided between the two antifreeze hydraulic cylinders (7), one end of the movable sampling frame (9) is connected to the push plate (8), and the movable sampling frame (9) is provided with a plurality of the pull rod slots (10) that match the annular limiting buckle (5); both the push plate (8) and the fixed base plate (11) are provided with grooves that allow the sampling rod (1) to pass through.

2. The ton-bag concentrate powder sampling device for use during the freezing period in extremely cold regions according to claim 1, characterized in that, The included angle of the tooth tip of the internal incision plum blossom tooth (3) is 70-74°, the cutting edge angle is 25-30°, and the ratio of tooth depth to tooth width is 1:1.0-1.

5.

3. The ton-bag concentrate powder sampling device for use during the freezing period in extremely cold regions according to claim 1, characterized in that, The starting end of the strip-shaped pressure relief groove is 2.0-3.0 cm from the root of the incised plum blossom tooth (3), the groove width is 1.2-1.5 cm, and the groove length is 60-65 cm.

4. The ton-bag concentrate powder sampling device for use during the freezing period in extremely cold regions according to claim 1, characterized in that, Both the push plate (8) and the fixed base plate (11) are provided with anti-slip handles (12).

5. A ton-bag concentrate powder sampling device for use during the freezing period in extremely cold regions according to claim 1, characterized in that, The pull-out groove (10) is a semi-circular or U-shaped groove. The inner diameter of the pull-out groove (10) matches the outer diameter of the annular limiting buckle (5), and the inner wall of the pull-out groove (10) is provided with anti-slip texture.

6. The ton-bag concentrate powder sampling device for use during the freezing period in extremely cold regions according to claim 1, characterized in that, The antifreeze hydraulic cylinder (7) is connected to the fixed base plate (11) by bolts.

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