Automatic deep multi-point slurry taking device and slurry taking method

Abstract

The application provides an automatic deep multi-point sampling device and a sampling method, which comprises a fixing frame arranged on a guide wall, a fixed pulley arranged on the top of the fixing frame, a connecting line arranged around the fixed pulley, the two sides of the connecting line connected with a lifting module and a balancing unit respectively, a plurality of sampling cylinders arranged on the lower side of the balancing unit, two adjacent sampling cylinders connected through a connecting plate, an electric valve arranged on the top of the sampling cylinder, and a vacuum pump arranged on one side of the lifting module for vacuumizing the sampling cylinder. The application has the advantages of ingenious design, greatly improved stability and precision of sampling, smooth and efficient sampling process, overall intelligent controllability and good effect.

Description

Technical Field

[0001] This invention relates to the field of diaphragm wall construction technology, and in particular to an automatic deep multi-point slurry sampling device and slurry sampling method. Background Technology

[0002] During diaphragm wall construction, the performance of the wall-supporting mud has a significant impact on the stability of the trench. Furthermore, underwater concrete pouring also imposes requirements on the quality of the wall-supporting mud. Standards mandate performance testing of the mud at different depths to ensure that the mud quality meets the requirements. However, due to the current lack of effective mud sampling equipment at construction sites, it is difficult to obtain mud samples at the predetermined depth, resulting in the tested mud indicators not accurately reflecting the mud quality at that depth.

[0003] Currently, a common engineering practice involves using a simple mud cylinder made on-site. A hinge is installed at the bottom, and the cylinder is lowered with the hinge open, allowing it to descend naturally under gravity. Once the predetermined depth is reached, the cylinder is slowly raised, and the hinge closes under the downward pressure of the mud. However, this method has the following main drawbacks: (1) the mud collected may be a mixture of mud from various depths, not just the mud from the predetermined location; (2) leakage is likely at the hinge, resulting in insufficient mud collection; (3) mud can only be collected from one depth at a time. As the mud cylinder descends into the mud, mud flow occurs, affecting the stability of the mud collection and resulting in low accuracy.

[0004] Chinese patent document CN 211057759 U describes a variable-depth mud picker for diaphragm walls. This device requires two sets of connecting lines for control, making it inconvenient to use and prone to leakage. Chinese patent document CN 217601392 U describes a multi-point mud sampler, but this device opens and closes as a whole, which cannot guarantee that each depth obtained is the verified target depth, making it inconvenient to use. Chinese patent document CN115748648 A describes a batch sampling device for mud from pile foundations at different depths and its usage method. This method is cumbersome, and different mud cylinders entering the mud cannot maintain proper balance, leading to contamination of the obtained slurry, thus presenting a flaw in its use. Summary of the Invention

[0005] This invention provides an automatic deep multi-point slurry sampling device and method, which solves the problems of low slurry sampling efficiency, slurry leakage, and the inability of the slurry sampling cylinder to be stably and accurately lowered vertically during the slurry sampling process.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: an automatic deep multi-point slurry sampling device, including a fixed frame spanning a guide wall, a fixed pulley at the top of the fixed frame, a connecting line wound on the fixed pulley, and a lifting module and a balancing unit on both sides of the connecting line respectively. Multiple sampling cylinders are provided on the lower side of the balancing unit, and two adjacent sampling cylinders are connected by a connecting plate. An electric valve is provided at the top of the sampling cylinder, and a vacuum pump for evacuating the sampling cylinder is provided on one side of the lifting module.

[0007] In a preferred embodiment, the fixed frame includes a top plate, a fixed pulley is set on the top of the top plate, the top plate is provided with a through groove for threading connecting wires, two support plates are symmetrically provided on both sides of the top plate, a first roller is provided at the bottom of the support plate, and a control module is provided on one side of the lifting module.

[0008] In the preferred embodiment, a first oblong groove is provided parallel to both sides of the through groove, a first mounting plate is provided at the bottom of the fixed pulley, screws are respectively inserted into the first mounting plate and the first oblong groove, two support cylinders are symmetrically provided on the top plate, extension plates are symmetrically inserted into the support cylinders, the support plate and the extension plate are slidably connected, a second mounting plate is provided at the bottom of the support plate, and the first roller is connected to the second mounting plate by screws.

[0009] In the preferred embodiment, a second oblong groove is provided through the top plate, and first ear plates are provided on both sides of the support cylinder. Screws are passed through the first ear plates and the second oblong groove. A channel is provided inside the support cylinder, and an extension plate is slidably disposed in the channel. A stop groove is provided on the extension plate. The support cylinder is fixed to the extension plate by screws. A first threaded hole is provided at the end of the extension plate, and a notch is provided on the side near the first threaded hole. A sliding groove is provided on the support plate, and a third oblong groove is provided inside the sliding groove. The sliding groove and the notch are slidably connected, and screws are passed through the third oblong groove and the first threaded hole.

[0010] In a preferred embodiment, the sampling cylinder includes two straight plates arranged opposite each other. The straight plates on both sides are respectively provided with a protrusion and a groove. A second threaded hole is provided through the straight plates, and a screw passes through the connecting plate and the second threaded hole.

[0011] In a preferred embodiment, the bottom of the sampling tube is detachably provided with a cutting unit, the lower part of the sampling tube is provided with a fourth threaded hole, the cutting unit includes an insertion rod, the insertion rod and the fourth threaded hole are threadedly connected, the two sides of the insertion rod are respectively hinged with diagonal braces, one side of the diagonal brace is provided with a second ear plate, the bottom of the diagonal brace is provided with a beveled surface, the second ear plate is connected to the sampling tube by screws, the bottom of the insertion rod is provided with a conical head, and the conical head is detachably provided with an tilt sensor.

[0012] In the preferred embodiment, the insert rod is provided with a first stud and a second stud, the first stud is threadedly connected to a fourth threaded hole, an adjusting sleeve is fitted on the second stud, a baffle is provided on the outside of the adjusting sleeve, the diagonal brace is provided with a fourth oblong hole, the pin passes through the fourth oblong hole and the baffle, and a limiting ring is provided on both sides of the adjusting sleeve, the limiting ring and the second stud are threadedly connected.

[0013] In the preferred embodiment, the upper part of the sampling cylinder is provided with a third threaded hole, the balancing unit includes a base plate, and multiple second L-plates are provided on both sides of the base plate. Screws are inserted into the second L-plates and the third threaded hole. A sealing box is provided on the upper side of the base plate, and an installation cavity is provided inside the sealing box. A counterweight unit is provided inside the installation cavity. A hanging plate is provided on the top of the sealing box, and multiple fixing posts connected to the connecting wire are provided on the hanging plate. A leakage hole and a fifth oblong hole are provided on the base plate. The first L-plate is slidably connected to the fifth oblong hole by screws, and the second roller is fixed to the outside of the first L-plate by screws.

[0014] In a preferred embodiment, the counterweight unit includes a load-bearing plate embedded in the mounting cavity. First electromagnet modules are respectively provided on both sides of the load-bearing plate and fixed to the side wall of the mounting cavity. Slides are symmetrically provided on the load-bearing plate, and counterweight blocks slide within the slides. Two electric cylinders are parallel and fixed on both sides of the slides. An insulating plate is provided at the end of the push rod on each electric cylinder, and a second electromagnet module is provided on the insulating plate. A partition is provided at the bottom of the counterweight block, and the partition is rotatably mounted on a frustum via screws.

[0015] The slurry collection method of the multi-point slurry collection device includes the following steps:

[0016] S1. Install multiple sampling tubes according to the design;

[0017] S2. Set up the fixed frame, and then connect the lifting module and the sampling cylinder with connecting wires respectively;

[0018] S3. Connect the control module and the lifting module, and perform coarse adjustment on the position side;

[0019] S4. Connect the power supply and perform debugging and parameter settings for each device;

[0020] S5. Open the electric valve and use the vacuum pump to evacuate the sampling cylinder until the designed capacity is reached, then close the electric valve.

[0021] S6. The sampling cylinder is raised and lowered to collect slurry through the lifting module, and samples are collected sequentially according to the required depth.

[0022] S7. After the slurry collection is completed, lift the sampling cylinder, remove the device, and clean it.

[0023] The beneficial effects of this invention are as follows: By combining and installing different sampling cylinders, and then using a vacuum pump to evacuate the sampling cylinder, it is ensured that after being lowered into the mud by the lifting module, the mud at the specified depth can be quickly obtained. This avoids the problem that the mud may not collect well and affect the accuracy of the overall verification due to the continuous filling of gaps by nearby mud during the process of the mud flowing into the sampling cylinder. The fixing frame can be installed on guide walls of different widths, providing a limiting and guiding function for the traction of the connecting line. The cutting unit can first push the mud to both sides, which can open the path and reduce the resistance of the mud to the sampling cylinder when it flows. In addition, the balancing unit and the counterweight unit ensure the precise and stable movement of the sampling cylinder during the up and down process, so as to collect mud at different depths more efficiently and accurately. The overall operation is convenient, which greatly improves the overall sampling accuracy and efficiency and has good economic benefits. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0025] Figure 1 This is a front view of the invention in use;

[0026] Figure 2 This is a simplified schematic diagram of the sampling cylinder installed in the balancing unit of the present invention;

[0027] Figure 3 This is a simplified schematic diagram of the fixing frame of the present invention;

[0028] Figure 4 This is a schematic diagram of the overall structure of the fixing frame of the present invention;

[0029] Figure 5 yes Figure 4 A top-down view;

[0030] Figure 6 yes Figure 4 A frontal view diagram;

[0031] Figure 7 yes Figure 4 Schematic diagram of the exploded structure, state one;

[0032] Figure 8 yes Figure 4 Schematic diagram of the explosion structure, state two;

[0033] Figure 9 This is a schematic diagram of the exploded structure of the cutting unit of the present invention, state one;

[0034] Figure 10 This is a schematic diagram of the exploded structure of the cutting unit of the present invention, state two;

[0035] Figure 11This is a schematic diagram of the overall structure of the balancing unit and sampling cylinder of the present invention, in state one.

[0036] Figure 12 yes Figure 11 A top-down view;

[0037] Figure 13 yes Figure 11 A frontal view diagram;

[0038] Figure 14 Schematic diagram of the overall structure of the balancing unit with sampling cylinder of the present invention, state two;

[0039] Figure 15 yes Figure 11 Schematic diagram of the exploded structure, state one;

[0040] Figure 16 yes Figure 11 Schematic diagram of the explosion structure, state two;

[0041] Figure 17 This is a schematic diagram of the balance unit and counterweight unit structure of the present invention, state one;

[0042] Figure 18 This is a schematic diagram of the balance unit and counterweight unit structure of the present invention, in state two.

[0043] Figure 19 yes Figure 18 A schematic diagram of the counterweight structure.

[0044] In the diagram: Control module 1; Lifting module 2; Fixing frame 3; Top plate 301; Fixed pulley 302; Support plate 303; First roller 304; Support cylinder 305; Extension plate 306; Through groove 307; First oblong groove 308; First mounting plate 309; Second oblong groove 310; Channel 311; Stop groove 312; Notch 313; First threaded hole 314; Slide groove 315; Third oblong groove 316; Second mounting plate 317; First ear plate 318; Connecting wire 4; Sampling cylinder 5; Straight plate 501; Protrusion 502; Groove 503; Second threaded hole 504; Third threaded hole 505; Fourth threaded hole 506; Connecting plate 6; Electric valve 7; Cutting unit 8; Insert rod 801; Diagonal brace 802; Pin 803; Adjusting sleeve 804; Baffle 805 Second ear plate 806; First stud 807; Second stud 808; Limiting ring 809; Fourth oblong hole 810; Beveled surface 811; Conical head 812; Screw 9; Tilt sensor 10; Balance unit 11; Base plate 1101; Sealing box 1102; Hanging plate 1103; Fixing column 1104; First L-plate 1105; Second roller 1106; Leak hole 1107; Fifth oblong hole 1108; Second L-plate 1109; Mounting cavity 1110; Counterweight unit 12; Load-bearing plate 1201; Slide rail 1202; Counterweight block 1203; First electromagnet module 1204; Electric cylinder 1205; Top rod 1206; Insulating plate 1207; Second electromagnet module 1208; Partition 1209; Frustum 1210; Guide wall 13; Vacuum pump 14. Detailed Implementation

[0045] like Figure 1-3An automatic deep multi-point slurry sampling device includes a fixed frame 3 spanning a guide wall 13. A fixed pulley 302 is located at the top of the fixed frame 3, and a connecting line 4 is wound around the fixed pulley 302. The two sides of the connecting line 4 are connected to a lifting module 2 and a balancing unit 11, respectively. Multiple sampling cylinders 5 are located on the lower side of the balancing unit 11. Adjacent sampling cylinders 5 are connected by a connecting plate 6. An electric valve 7 is located at the top of each sampling cylinder 5. A vacuum pump 14 is located on one side of the lifting module 2 to evacuate the sampling cylinders 5. A detachable lid is provided on the top of each sampling cylinder 5, and the electric valve 7 is installed on the lid. Before use, the vacuum pump 14 is used to evacuate the sampling cylinder 5, and then the vacuum is closed after a certain period. Initially, data on the slurry capacity that can be collected under different vacuum conditions was obtained for testing. This ensures that the sampling cylinder 5 can effectively collect slurry after entering the slurry, obtaining a suitable volume of slurry without significantly affecting the overall weight and balance. The connecting line 4 uses a high-strength cable, and the lifting module 2 uses a small winch. The high-strength cable serves as both the lifting cable of the small winch and the power supply cable for the vacuum slurry sampling cylinder 5, supplying power to the electric valve 7 in the vacuum slurry sampling cylinder 5 to realize the valve opening and closing and complete the slurry sampling operation. The fixed pulley bracket is placed on the guide wall to facilitate the lowering and lifting of the slurry sampling cylinder. The balancing unit 11 ensures a stable and reliable connection between the high-strength cable and the vacuum sampling cylinder 5. The slurry sampling cylinder does not need to be evacuated to an absolute vacuum; it only needs to reach the air pressure value that can be used to measure the amount of mud sampled.

[0046] like Figure 4-8 In the preferred embodiment, the fixed frame 3 includes a top plate 301, a fixed pulley 302 is disposed on the top of the top plate 301, a through groove 307 for threading the connecting wire 4 is provided on the top plate 301, two support plates 303 are symmetrically provided on both sides of the top plate 301, and a first roller 304 is provided at the bottom of the support plate 303. A control module 1 is provided on one side of the lifting module 2. The control module 1 uses a microcomputer for data transmission, reception, storage and calculation, and integrates an electronically controlled slurry sampling program. It can set the preset slurry sampling depth and slurry sampling capacity. The slurry sampling capacity corresponds to the vacuum pumping time of the vacuum pump 14, and drives the lifting module 2 to automatically lower the slurry sampling cylinder 5, so as to automatically raise the vacuum slurry sampling cylinder after the slurry sampling operation.

[0047] In the preferred embodiment, the through groove 307 has parallel first oblong grooves 308 on both sides, the fixed pulley 302 has a first mounting plate 309 at its bottom, and screws 9 are respectively inserted into the first mounting plate 309 and the first oblong grooves 308. Two support cylinders 305 are symmetrically arranged on the top plate 301, and extension plates 306 are symmetrically inserted into the support cylinders 305. The support plate 303 and the extension plate 306 are slidably connected. The bottom of the support plate 303 has a second mounting plate 317, and the first roller 304 is connected to the second mounting plate 317 by screws 9. This structure allows for adaptation to environmental changes. When the plane above the guide wall 14 is uneven, adjusting the support plates 303 at different positions, along with the support of the first rollers 304, ensures that the plane of the top plate 301 is relatively horizontal. Simultaneously, in the non-moving state, the overall center of gravity is lowered, thus mitigating the influence of surrounding wind. When movement is required, it can be adjusted to a higher position, making it convenient, flexible, and effective.

[0048] In the preferred embodiment, a second oblong groove 310 is provided through the top plate 301, and first ear plates 318 are provided on both sides of the support cylinder 305. Screws 9 pass through the first ear plates 318 and the second oblong groove 310. A channel 311 is provided inside the support cylinder 305, and an extension plate 306 slides within the channel 311. A stop groove 312 is provided on the extension plate 306. The support cylinder 305 is fixed to the extension plate 306 by screws 9. A first threaded hole 314 is provided at the end of the extension plate 306, and a notch 313 is provided near the first threaded hole 314. A sliding groove 315 is provided on the support plate 303, and a third oblong groove 316 is provided within the sliding groove 315. The sliding groove 315 and the notch 313 are slidably connected. Screws 9 pass through the third oblong groove 316 and the first threaded hole 314. This structure allows the top plate 301 to be extended in the length direction, adapting to more usage scenarios, while also facilitating overall adjustment, ensuring reliable connection, and guaranteeing support.

[0049] In a preferred embodiment, the sampling cylinder 5 includes two opposing straight plates 501. The two straight plates 501 are respectively provided with protrusions 502 and grooves 503. A second threaded hole 504 is provided through the straight plate 501, and a screw 9 passes through the connecting plate 6 and the second threaded hole 504. This structure allows for convenient and quick installation of the sampling cylinder 5, ensures that the center of gravity of the sampling cylinder 5 is on the same plane, improves the overall resistance to external interference, and also enhances overall rigidity and stability during vertical movement.

[0050] like Figure 9-10In the preferred embodiment, the sampling cylinder 5 is detachably equipped with a cutting unit 8 at its bottom. The lower part of the sampling cylinder 5 has a fourth threaded hole 506. The cutting unit 8 includes an insertion rod 801, which is threadedly connected to the fourth threaded hole 506. Two inclined support rods 802 are hinged to both sides of the insertion rod 801. A second ear plate 806 is provided on one side of the inclined support rod 802, and a beveled surface 811 is provided at the bottom of the inclined support rod 802. The second ear plate 806 is connected to the sampling cylinder 5 by screws 9. A conical head 812 is provided at the bottom of the insertion rod 801, and a tilt sensor 10 is detachably mounted on the conical head 812. This structure allows the conical head 12 to act as the entry point when it first enters the mud, driving the inclined support rod 802 to move the mud, forming a buffer zone. This facilitates better entry of the sampling cylinder 5 into the mud. The tilt sensor 10 can send the overall status of the sampling device to the electronic control module 1, thereby helping the electronic control module 1 to correct the control of the balancing unit 12.

[0051] In a preferred embodiment, the insert rod 801 is provided with a first stud 807 and a second stud 808. The first stud 807 is threadedly connected to a fourth threaded hole 506. An adjusting sleeve 804 is fitted onto the second stud 808, and a baffle 805 is provided on the outer side of the adjusting sleeve 804. The diagonal brace 802 is provided with a fourth oblong hole 810, and a pin 803 passes through the fourth oblong hole 810 and the baffle 805. Limiting rings 809 are provided on both sides of the adjusting sleeve 804, and the limiting rings 809 are threadedly connected to the second stud 808. This structure facilitates the installation, removal, and adjustment of the insert rod 801 and the diagonal brace 802. The adjusting sleeve 804 can quickly change its angle and height to meet the overall installation requirements, ensure installation accuracy, maintain overall structural stability, and ensure balanced force distribution.

[0052] like Figure 11-16In the preferred embodiment, the upper part of the sampling cylinder 5 is provided with a third threaded hole 505, the balancing unit 11 includes a base plate 1101, and multiple second L plates 1109 are provided on both sides of the base plate 1101. Screws 9 are inserted into the second L plates 1109 and the third threaded hole 505. A sealing box 1102 is provided on the upper side of the base plate 1101. An installation cavity 1110 is provided inside the sealing box 1102. A counterweight unit 12 is provided inside the installation cavity 1110. A hanging plate 1103 is provided on the top of the sealing box 1102. Multiple fixing posts 1104 connected to the connecting line 4 are provided on the hanging plate 1103. A leakage hole 1107 and a fifth oblong hole 1108 are provided on the base plate 1101. The first L plate 1105 is slidably connected to the fifth oblong hole 1108 by screws 9. The second roller 1106 is fixed to the outside of the first L plate 1105 by screws 9. This structure allows the position of the first L-plate 1105 to be adjusted according to the width of the ground connecting wall at the ground guide wall 14, and the second rollers 1106 on both sides of the base plate 1101 in the length direction to fit precisely against the inner sidewall of the guide wall 14, thereby limiting the sampling cylinder 5 in the length direction, width direction and rotation direction around the axis of the connecting line 14, ensuring the accuracy of the up and down movement of the sampling cylinder 5.

[0053] like Figure 17-19In the preferred embodiment, the counterweight unit 12 includes a load-bearing plate 1201, which is embedded in the mounting cavity 1110. First electromagnet modules 1204 are respectively provided on both sides of the load-bearing plate 1201 and are fixed to the side walls of the mounting cavity 1110. Slides 1202 are symmetrically provided on the load-bearing plate 1201, and counterweight blocks 1203 slide within the slides 1202. Two electric cylinders 1205 are parallelly fixed on both sides of the slides 1202. An insulating plate 1207 is provided at the end of the push rod 1206 on the electric cylinder 1205, and a second electromagnet module 1208 is provided on the insulating plate 1207. A partition 1209 is provided at the bottom of the counterweight block 1203, and a frustum 1210 is rotatably provided on the partition 1209 via screws 9. In actual operation, the counterweight 1203 is made with an outer iron shell and an inner filling of gravel, which is cost-effective and has good performance. The weight of the counterweight 1203 can be changed by changing the amount of gravel filling as needed. In the initial stage of use, the electronic control module 1 and the counterweight unit 12 are connected for testing. Corresponding to the change in the capacity of the sampling cylinder 5, the corresponding motion parameters of the electric cylinder 1205 are set. At the same time, the first electromagnet module 1204 and the second electromagnet module 1208 cooperate with each other to control the counterweight 1203 in a suitable position. In use, the sampling cylinder 5 in the middle is sampled first to ensure that the overall center of gravity is relatively balanced. When the sampling cylinders 5 on both sides start sampling, in the initial state, the second electromagnet module 1208 is energized and the electric cylinder 1205 is in the minimum extension state. At this time, the whole is balanced. When one sampling cylinder 5 takes slurry, the electric cylinder 1205 pushes the counterweight on the opposite side. Block 1203 moves in the opposite direction. A spring is provided between the first electromagnet module 1204 and the mounting cavity 1110. Due to the limited overall space, in order to ensure stable performance and light weight, and to keep the cost and weight of the electric cylinder 1205 under control, when the electric cylinder 1205 pushes the counterweight block 1203 closer to the first electromagnet module 1204, the first electromagnet module 1204 is energized and the second electromagnet module 1208 is de-energized, thus fixing the counterweight block 1203 and ensuring overall balance. When sampling at the next depth, the electric cylinder 1205, in conjunction with the second electromagnet module 1208, removes the counterweight block 1203 from the first electromagnet module 1204. At this time, the first electromagnet module 1204 is de-energized and the second electromagnet module 1208 is energized, thus ensuring the stability and balance of the overall structure during sampling, resulting in high sampling accuracy and good performance.

[0054] A method for collecting slurry using a multi-point slurry collection device includes the following steps:

[0055] S1. Install multiple sampling tubes 5 according to the design; generally, there are 3 sampling tubes, so as to achieve sampling at different depths in the middle, lower and middle parts of the ground wall;

[0056] S2. Set up the fixed frame 3, and then connect the lifting module 2 and the sampling cylinder 5 with the connecting line 4 respectively;

[0057] S3. Connect control module 1 and lifting module 2, and perform coarse adjustment on the position side;

[0058] S4. Connect the power supply and perform debugging and parameter settings for each device;

[0059] S5. Open the electric valve 7 and use the vacuum pump to evacuate the sampling cylinder 5. After reaching the designed capacity, close the electric valve 7.

[0060] S6. The lifting module 2 completes the lifting and lowering of the sampling cylinder 5 for slurry sampling, and samples are taken sequentially according to the required depth;

[0061] S7. After the slurry collection is completed, lift the sampling cylinder 5, remove it from the device, and clean it.

[0062] The electronic control module 1 can accurately send and receive signals to drive the vacuum pump 14 and the lifting module 2 respectively. During the sampling process, it controls the opening of the electric valve 7 and controls the power supply to the first electromagnet module 1204, the electric cylinder 1205 and the second electromagnet module 1208. An inclination sensor 10 is installed on the upper hanging plate 1103 of the balancing unit 11. That is, inclination sensors are installed at the upper and lower parts of the device respectively. The two inclination sensors check each other to ensure the accuracy of the measurement and control of the slurry sampling device. At the same time, the inclination sensor 10 can feed back the status of the device to the electronic control module 1. At this time, the electronic control module 1 makes corresponding fine adjustments. By cooperating with the first electromagnet module 1204, the electric cylinder 1205 and the second electromagnet module 1208, the overall balance is ensured, avoiding the defects of the initial balancing program.

[0063] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. An automatic deep multi-point slurry sampling device, characterized in that: The system includes a fixed frame (3) spanning the guide wall (13), a fixed pulley (302) on the top of the fixed frame (3), a connecting line (4) wound around the fixed pulley (302), and the two sides of the connecting line (4) are connected to the lifting module (2) and the balancing unit (11) respectively. Multiple sampling cylinders (5) are provided on the lower side of the balancing unit (11). Two adjacent sampling cylinders (5) are connected by a connecting plate (6). An electric valve (7) is provided on the top of the sampling cylinder (5). A vacuum pump (14) is provided on one side of the lifting module (2) to evacuate the sampling cylinder (5). The sampling tube (5) includes two straight plates (501) arranged opposite to each other. The straight plates (501) on both sides are respectively provided with a protrusion (502) and a groove (503). A second threaded hole (504) is provided through the straight plate (501). The screw (9) is inserted into the connecting plate (6) and the second threaded hole (504). The upper part of the sampling cylinder (5) is provided with a third threaded hole (505). The balancing unit (11) includes a base plate (1101). Multiple second L plates (1109) are provided on both sides of the base plate (1101). Screws (9) are inserted into the second L plates (1109) and the third threaded hole (505). A sealing box (1102) is provided on the upper side of the base plate (1101). An installation cavity (1110) is provided in the sealing box (1102). A counterweight unit is provided in the installation cavity (1110). (12) The top of the sealing box (1102) is provided with a hanging plate (1103), and the hanging plate (1103) is provided with multiple fixing posts (1104) connected to the connecting line (4). The bottom plate (1101) is provided with a leakage hole (1107) and a fifth oblong hole (1108). The first L plate (1105) is slidably connected to the fifth oblong hole (1108) by screws (9), and the second roller (1106) is fixed to the outside of the first L plate (1105) by screws (9). The counterweight unit (12) includes a load-bearing plate (1201), which is embedded in the mounting cavity (1110). The load-bearing plate (1201) is provided with a first electromagnet module (1204) on both sides of the load-bearing plate (1201). The first electromagnet module (1204) is fixed on the side wall of the mounting cavity (1110). The load-bearing plate (1201) is symmetrically provided with a slide rail (1202). The counterweight block (1203) is slidably provided in the slide rail (1202). Two electric cylinders (1205) are fixedly arranged in parallel on both sides of the slide rail (1202). The end of the push rod (1206) on the electric cylinder (1205) is provided with an insulating plate (1207). The insulating plate (1207) is provided with a second electromagnet module (1208). The bottom of the counterweight block (1203) is provided with a partition plate (1209). The partition plate (1209) is rotatably provided with a frustum (1210) by screws (9).

2. The automatic deep multi-point slurry sampling device according to claim 1, characterized in that: The fixed frame (3) includes a top plate (301), a fixed pulley (302) is set on the top of the top plate (301), a through groove (307) for passing the connecting wire (4) is provided on the top plate (301), two support plates (303) are symmetrically provided on both sides of the top plate (301), a first roller (304) is provided at the bottom of the support plate (303), and a control module (1) is provided on one side of the lifting module (2).

3. The automatic deep multi-point slurry sampling device according to claim 2, characterized in that: The through groove (307) has a first oval groove (308) on both sides. The bottom of the fixed pulley (302) has a first mounting plate (309). The screw (9) is respectively inserted into the first mounting plate (309) and the first oval groove (308). The top plate (301) also has two support cylinders (305) symmetrically arranged. The support cylinders (305) have extension plates (306) symmetrically inserted into them. The support plate (303) and the extension plate (306) are slidably connected. The bottom of the support plate (303) has a second mounting plate (317). The first roller (304) is connected to the second mounting plate (317) by the screw (9).

4. The automatic deep multi-point slurry sampling device according to claim 3, characterized in that: A second oblong groove (310) is provided through the top plate (301). A first ear plate (318) is provided on both sides of the support cylinder (305). A screw (9) is provided in the first ear plate (318) and the second oblong groove (310). A channel (311) is provided in the support cylinder (305). An extension plate (306) is slidably disposed in the channel (311). A stop groove (312) is provided on the extension plate (306). The support cylinder (305) is fixed by the screw (9) and the extension plate (306). A first threaded hole (314) is provided at the end of the extension plate (306). A notch (313) is provided on the side near the first threaded hole (314). A sliding groove (315) is provided on the support plate (303). A third oblong groove (316) is provided in the sliding groove (315). The sliding groove (315) and the notch (313) are slidably connected. The screw (9) is provided in the third oblong groove (316) and the first threaded hole (314).

5. The automatic deep multi-point slurry sampling device according to claim 1, characterized in that: The sampling tube (5) is detachably provided with a cutting unit (8) at the bottom. The lower part of the sampling tube (5) is provided with a fourth threaded hole (506). The cutting unit (8) includes a rod (801). The rod (801) and the fourth threaded hole (506) are threaded together. The two sides of the rod (801) are respectively hinged with a diagonal brace (802). The diagonal brace (802) is provided with a second ear plate (806) on one side. The bottom of the diagonal brace (802) is provided with a beveled surface (811). The second ear plate (806) is connected to the sampling tube (5) by a screw (9). The bottom of the rod (801) is provided with a conical head (812). The conical head (812) is detachably provided with an angle sensor (10).

6. The automatic deep multi-point slurry sampling device according to claim 5, characterized in that: The insert rod (801) is provided with a first stud (807) and a second stud (808). The first stud (807) is threadedly connected to the fourth threaded hole (506). An adjusting sleeve (804) is fitted on the second stud (808). A baffle (805) is provided on the outside of the adjusting sleeve (804). A fourth oblong hole (810) is provided on the diagonal brace (802). The pin (803) passes through the fourth oblong hole (810) and the baffle (805). Limiting rings (809) are provided on both sides of the adjusting sleeve (804). The limiting rings (809) and the second stud (808) are threadedly connected.

7. The slurry sampling method of the multi-point slurry sampling device according to any one of claims 1 to 6, characterized in that, Includes the following steps: S1. Install multiple sampling tubes (5) according to the design; S2. Set up the fixed frame (3), and then connect the lifting module (2) and the sampling cylinder (5) with the connecting line (4); S3. Connect the control module (1) and the lifting module (2) and perform a coarse adjustment of the position; S4. Connect the power supply and perform debugging and parameter settings for each device; S5. Open the electric valve (7) and use the vacuum pump to evacuate the sampling cylinder (5). After reaching the designed capacity, close the electric valve (7). S6. The sampling cylinder (5) is raised and lowered to collect slurry through the lifting module (2), and samples are collected in sequence according to the required depth. S7. After the slurry collection is completed, lift the sampling cylinder (5), remove it from the device, and clean it.

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