Low-disturbance rapid sampling device for phosphogypsum backfilling engineering

Abstract

The low-disturbance rapid sampling device comprises a supporting rod, two fixed grips and an ejection assembly, the two fixed grips are symmetrically installed on the left side and the right side of the upper end of the supporting rod, an installation plate is installed at the lower ends of the fixed grips, sliding grooves are formed in the lower sides of the fixed grips and the two sides of the supporting rod, and the ejection assembly is installed in the sliding grooves. An ejection assembly is mounted in the supporting rod, a cutting ring is mounted at the lower end of the ejection assembly and in the lower portion of the mounting plate, and quick release assemblies used for fixing the cutting ring are mounted at the two ends of the upper end face of the mounting plate in an embedded mode. The device has the characteristics of static press-in, convenience and rapidness in sample extraction, convenience in lossless ejection and the like.

Description

Technical Field

[0001] This invention relates to the field of construction auxiliary components technology, and in particular to a low-disturbance rapid sampling device for backfilling phosphogypsum projects. Background Technology

[0002] Phosphogypsum is a byproduct of phosphoric acid production. With increasingly stringent environmental regulations, its use in roadbeds or site backfilling is a major way to utilize it as a resource. During backfilling construction, strict testing of compaction is essential (usually using the ring cutter method). Currently, at backfilling sites, common soil sampling handles are commonly used, with operators relying on their arm strength to press down the material.

[0003] Because the compacted phosphogypsum backfill layer is quite hard, it is difficult to force it in using only arm strength, often forcing workers to use a hammer to strike the top of the handle. However, phosphogypsum has different physical properties than ordinary clay; its particle size distribution is unique and it is sensitive to moisture content. The shock wave generated by hammering easily damages the "soil-water" framework inside the sample, resulting in a lower density than the actual density of the extracted sample and distorting the test results. In addition, current technology lacks a dedicated ejection mechanism integrated with the sampling handle. After sampling, operators often need to find a wooden stick or directly use their fingers to eject the sample. This crude method of sample removal easily causes the sample edges to break or remain, seriously affecting the accuracy of volume calculation and work efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a low-disturbance rapid sampling device for backfilling phosphogypsum projects, which has the characteristics of static pressing, convenient and rapid sample extraction, and convenient non-destructive ejection.

[0005] The technical solution adopted by the present invention to solve its technical problem is as follows: a low-disturbance rapid sampling device for backfilling phosphogypsum projects is provided, including a support rod, a fixed handle and an ejection assembly. Two fixed handles are symmetrically installed on the left and right sides of the upper end of the support rod. An installation plate is installed on the lower end of the fixed handle. Sliding grooves are provided on the lower side of the fixed handle and on both sides of the support rod. An ejection assembly is installed inside the support rod. A ring cutter is installed in the lower end of the ejection assembly and in the lower part of the installation plate. Quick-release assemblies for fixing the ring cutter are embedded in both ends of the upper surface of the installation plate.

[0006] In this technical solution, a ring-shaped blade with the blade facing downwards is installed, which makes it easy for the operator to press the blade in. The blade can be directly inserted into the sampling site. At the same time, the inner ring of the ring blade can cover the sample, allowing the operator to quickly remove the sample. In addition, by installing an ejection component, the sample can be easily and without damage ejected from the ring blade. A quick-release component is provided to facilitate the user to quickly install and remove the ring blade.

[0007] As a supplement to this technical solution, the ejection assembly includes a compression spring, a pressure rod, and a movable handle. The pressure rod is installed vertically inside a support rod. A compression spring with its lower end abutting against the pressure rod is installed inside the upper end of the support rod. Movable handles matching the slide groove are symmetrically installed on both sides of the pressure rod. A pressure plate is installed inside the lower end of the pressure rod, and the pressure plate matches the inner ring of the ring cutter.

[0008] In this technical solution, a compression spring is used to facilitate the pressure rod to push the pressure plate, thereby enabling the pressure plate to eject the sample from the ring cutter without damage.

[0009] As a supplement to this technical solution, the quick-release assembly includes a pry block and a limiting block. There are two pry blocks symmetrically mounted on the mounting plate. The upper end of the pry block is fixedly mounted on the upper surface of the mounting plate. The lower end of the pry block extends to one side of the upper end of the ring cutter. A limiting block is provided at the lower end of the pry block. One side of the limiting block is fastened to the side of the ring cutter.

[0010] In this technical solution, a toggle block is used to control the movement of the limit block. The limit block can be fixed with the ring cutter, and moving the toggle block can drive the limit block to move, so that the ring cutter can be quickly assembled and disassembled.

[0011] As a supplement to this technical solution, the mounting plate is provided with a sliding groove corresponding to the toggle block, and a limit spring is installed between the other side of the limiting block and the side wall of the sliding groove. By designing the limit spring, the limiting block and the toggle block can be quickly reset.

[0012] As a supplement to this technical solution, the outer ring of the upper end of the ring cutter is provided with a limiting groove that matches the limiting block. The limiting groove is provided to facilitate the docking of the ring cutter and the limiting block.

[0013] Beneficial effects: This invention relates to a low-disturbance rapid sampling device for backfilling phosphogypsum projects, which has the following advantages: 1. Greatly improves the representativeness and accuracy of the sample: Unlike the traditional hammering method, the present invention adopts the method of "foot-step static pressure into the soil" combined with "elbow static pressure demolding", which is specifically designed for the brittle and easily compacted characteristics of phosphogypsum, avoiding the damage of the internal microstructure to the impact load, so that the detected dry density data truly reflects the quality of the project. 2. Effort-saving structure: The innovative "dual grip system" cleverly utilizes the lever principle of the operator's own arm (palm as fulcrum, elbow as power point) when ejecting the sample. Compared with the traditional method of relying on finger pressing or finding external tools to eject, the operation is more effortless and stable, and is especially suitable for demolding high viscosity and high density phosphogypsum samples. 3. Highly efficient continuous operation capability: It integrates an automatic reset spring mechanism and quick-release components. After completing one sampling, the pressure plate automatically springs back. The ring cutter can be removed by simply moving the lever. Replacing the ring cutter only requires inserting it and it will automatically lock (using the inclined guide). The sampling time is reduced by more than 50%, which greatly reduces the labor intensity of the testing personnel. 4. Compact structure and leak-proof: The pressure plate is normally stored above the ring cutter and fits precisely against the inner wall of the ring cutter. It serves as both an ejection device and an upper sealing function during sampling to prevent loose phosphogypsum dust from entering the device and jamming the mechanical structure. Attached Figure Description

[0014] Figure 1 This is a structural view of the present invention; Figure 2 This is an internal schematic diagram of the present invention; Figure 3 This is a structural view of the limiting block described in this invention.

[0015] Diagram: 1. Support rod; 2. Fixed handle; 3. Ejector assembly; 31. Compression spring; 32. Pressure rod; 33. Moving handle; 34. Pressure plate; 35. Mounting plate; 301. Slide groove; 4. Ring cutter; 5. Quick release assembly; 51. Pulley; 52. Limiting spring; 53. Limiting block; 501. Limiting groove. Detailed Implementation

[0016] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0017] Embodiments of the present invention relate to a low-disturbance rapid sampling device for backfilling phosphogypsum projects, such as... Figure 1 — Figure 3 As shown, the device includes a support rod 1, fixed handles 2, and an ejector assembly 3. Two fixed handles 2 are symmetrically installed on the left and right sides of the upper end of the support rod 1. An mounting plate 35 is installed on the lower end of the fixed handles 2. Sliding grooves 301 are provided on the lower side of the fixed handles 2 and on both sides of the support rod 1. An ejector assembly 3 is installed inside the support rod 1. A ring cutter 4 is installed in the lower end of the ejector assembly 3 and the lower part of the mounting plate 35. Quick-release assemblies 5 for fixing the ring cutter 4 are embedded in both ends of the upper surface of the mounting plate 35.

[0018] In this technical solution, a ring blade 4 with the blade facing downwards and in a circular shape is installed, which makes it easy for the operator to press it in with their hands. The blade can be directly inserted into the sampling site. At the same time, the inner ring of the ring blade 4 can cover the sample, allowing the operator to quickly remove the sample. In addition, by installing the ejection component 3, the sample can be easily ejected from the ring blade 4 without damage. The quick-release component 5 is set to facilitate the user to quickly install and remove the ring blade 4.

[0019] As a supplement to this technical solution, the ejection assembly 3 includes a compression spring 31, a pressure rod 32, and a movable handle 33. The pressure rod 32 is installed vertically inside the support rod 1. The upper end of the support rod 1 is equipped with a compression spring 31 whose lower end abuts against the pressure rod 32. Movable handles 33 matching the slide groove 301 are symmetrically installed on both sides of the pressure rod 32. A pressure plate 34 is installed inside the lower end of the pressure rod 32. The pressure plate 34 and the inner ring of the ring cutter 4 are matched.

[0020] In this technical solution, a compression spring 31 is used to facilitate the pressure rod 32 to push the pressure plate 34, so that the pressure plate 34 can eject the sample from the ring cutter 4 without damage.

[0021] As a supplement to this technical solution, the quick-release component 5 includes a pry block 51 and a limiting block 53. There are two pry blocks 51 symmetrically installed on the mounting plate 35. The upper end of the pry block 51 is fixedly installed on the upper surface of the mounting plate 35. The lower end of the pry block 51 extends to one side of the upper end of the ring cutter 4. The lower end of the pry block 51 is provided with a limiting block 53. One side of the limiting block 53 is fastened to the side of the ring cutter 4.

[0022] In this technical solution, a toggle block 51 is set to control the movement of the limit block 53. The limit block 53 can be fixed with the ring cutter 4. At the same time, toggling the toggle block 51 can drive the limit block 53 to move, so that the ring cutter 4 can be quickly assembled and disassembled.

[0023] As a supplement to this technical solution, the mounting plate 35 is provided with a sliding groove corresponding to the toggle block 51, and a limit spring 52 is installed between the other side of the limiting block 53 and the side wall of the sliding groove. By designing the limit spring 52, the limiting block 53 and the toggle block 51 can be quickly reset.

[0024] As a supplement to this technical solution, the upper outer ring of the ring cutter 4 is provided with a limiting groove 501 that matches the limiting block 53. The limiting groove 501 is provided to facilitate the docking of the ring cutter 4 and the limiting block 53.

[0025] Example For quick installation of the ring cutter 4, the operator aligns the ring cutter 4 with the opening on the lower surface of the mounting plate 35 and inserts it upwards. During insertion, the pressure plate 34 naturally inserts into the inner wall of the ring cutter 4. During this process, the top edge of the ring cutter 4 presses against the inclined surface of the limiting block 53 in the quick-release assembly 5, forcing the two sets of limiting blocks 53 to open outwards and release the obstruction; the opening of the limiting blocks 53 compresses the limiting spring 52, generating a reaction force. When the upper surface of the ring cutter 4 is fully in contact with the mounting plate 35, rotating the ring cutter 4 causes the limiting groove 501 and the limiting block 53 to align. The limiting spring 52 instantly pushes the limiting block 53 into the limiting groove 501, producing a "click" sound, thus completing the automatic fixing of the ring cutter 4. This "blind insertion" design greatly facilitates on-site operation.

[0026] After the static pressure sampling device is installed, move it to the location where sampling is required. Align the ring cutter 4 with the phosphogypsum backfill layer. The operator holds the fixed handle 2 with both hands while simultaneously stepping down on the mounting plate 35 with one or both feet. Under the vertical static pressure generated by the operator's body weight, the ring cutter 4 will smoothly and gradually insert into the phosphogypsum layer, compacting the phosphogypsum and filling the ring cutter. Note: After the ring cutter 4 is inserted, remove the phosphogypsum around the ring cutter 4, then pull the fixed handle 2 upwards to lift the mounting plate 35 and the ring cutter 4 off the ground, thus achieving phosphogypsum sampling.

[0027] After the ring cutter 4 is removed, to ensure the sample is extracted without damage, the operator lifts the fixed handle 2 (as a fulcrum) with their palm facing upwards and uses their elbow (or forearm) to press down the moving handle 33 below. As the moving handle 33 moves downwards, it drives the internal pressure rod 32 to overcome spring resistance and descend, thereby causing the pressure plate 34 to move downwards smoothly. The downward-moving pressure plate 34 acts like a piston, pressing out the high-density phosphogypsum sample completely and evenly from the ring cutter. Before the phosphogypsum is pressed out, an assistant or operator can use a container to collect it. This operating method utilizes the human lever principle, saving effort and avoiding sample breakage caused by manual extraction, significantly improving sampling efficiency and sample quality, and facilitating subsequent sampling by the device.

[0028] After the ring cutter disassembly and resetting sampling are completed, release your elbow, and the pressure plate 34 will automatically reset under the action of the compression spring 31. When the ring cutter 4 needs to be disassembled for cleaning or replacement, simply open the two sets of levers 51 on the mounting plate 35 to the left and right sides simultaneously. The levers 51 will drive the limiting block 53 to move synchronously, causing it to disengage from the limiting groove 501, thereby releasing the limitation on the ring cutter 4, at which point the ring cutter 4 can be easily removed.

Claims

1. A low-disturbance rapid sampling device for backfilling phosphogypsum projects, characterized in that: The device includes a support rod (1), a fixed handle (2), and an ejector assembly (3). Two fixed handles (2) are symmetrically installed on the left and right sides of the upper end of the support rod (1). An mounting plate (35) is installed on the lower end of the fixed handle (2). Slide grooves (301) are provided on the lower side of the fixed handle (2) and on both sides of the support rod (1). An ejector assembly (3) is installed inside the support rod (1). A ring cutter (4) is installed in the lower end of the ejector assembly (3) and the lower part of the mounting plate (35). Quick-release assemblies (5) for fixing the ring cutter (4) are embedded in both ends of the upper surface of the mounting plate (35).

2. The low-disturbance rapid sampling device for backfilling phosphogypsum projects according to claim 1, characterized in that: The ejection assembly (3) includes a compression spring (31), a pressure rod (32), and a movable handle (33). The pressure rod (32) is installed in the support rod (1) and moves up and down. The upper end of the support rod (1) is equipped with a compression spring (31) whose lower end is against the pressure rod (32). The two sides of the pressure rod (32) are symmetrically equipped with movable handles (33) that match the slide groove (301). The lower end of the pressure rod (32) is equipped with a pressure plate (34), and the pressure plate (34) matches the inner ring of the ring cutter (4).

3. The low-disturbance rapid sampling device for backfilling phosphogypsum projects according to claim 1, characterized in that: The quick-release assembly (5) includes a pry block (51) and a limiting block (53). There are two pry blocks (51) symmetrically mounted on the mounting plate (35). The upper end of the pry block (51) is fixedly mounted on the upper surface of the mounting plate (35). The lower end of the pry block (51) extends to one side of the upper end of the ring cutter (4). The lower end of the pry block (51) is provided with a limiting block (53). One side of the limiting block (53) is fastened to the side of the ring cutter (4).

4. A low-disturbance rapid sampling device for backfilling phosphogypsum projects according to claim 3, characterized in that: The mounting plate (35) is provided with a sliding groove corresponding to the toggle block (51), and a limit spring (52) is installed between the other side of the limit block (53) and the side wall of the sliding groove.

5. A low-disturbance rapid sampling device for backfilling phosphogypsum projects according to claim 3, characterized in that: The upper outer ring of the ring cutter (4) is provided with a limiting groove (501) that matches the limiting block (53).

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