A sampling device for rare earth ore wastewater detection

Abstract

The present invention relates to the technical field of wastewater sampling, and in particular to a sampling device for detecting rare earth ore wastewater. The sampling box is driven by a driving device to achieve lifting and lowering. A third sampling cylinder is provided in the middle of the sampling box. Two first sampling cylinders and second sampling cylinders are provided with the third sampling cylinder as the symmetrical center. The first sampling cylinder and the second sampling cylinder are both moved relative to the third sampling cylinder by an adjusting device, and the distance between the second sampling cylinder and the third sampling cylinder and the vertical distance between the first sampling cylinder and the corresponding second sampling cylinder are always kept equal. The present invention is provided with components such as a first nozzle, a second nozzle, and a piston plate. After sampling is completed, the second nozzle is used to clean the inside of the piston cylinder, and then the first nozzle is used to dry the inner wall of the piston cylinder to complete the cleaning of the inner wall of the piston cylinder. In this way, cross contamination can be avoided and the impact on subsequent sampling can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of sewage sampling, in particular to a sampling device for detecting rare earth ore sewage. Background Art

[0002] Rare earth ores refer to minerals containing rare earth elements (REEs). They are the primary raw materials for extracting REEs (such as cerium, lanthanum, neodymium, terbium, ytterbium, and yttrium). Rare earth elements are widely used in modern science, industry, and energy, such as in the manufacture of high-strength permanent magnets, catalysts, optical glass, and nuclear energy technology. The mining and processing of rare earth ores typically produces wastewater, which often contains large amounts of harmful substances and poses a threat to the environment and human health. Therefore, it is necessary to collect wastewater samples for water quality testing, monitor pollutant content, and assess environmental pollution risks. Existing wastewater sampling devices, such as patent application publication number CN118482996A, disclose a sampling device and sampling method for sewage treatment testing. While these devices can simultaneously pump water from multiple sampling tubes, reducing the number of sampling cycles, some wastewater sample remains in the tubes after each sampling. If not cleaned, this can affect the results of the next sampling, resulting in inaccurate sampling data. In view of this, the present invention proposes a sampling device for rare earth ore wastewater detection to solve the above-mentioned technical problems. Summary of the Invention

[0003] In order to overcome the technical problems mentioned in the background technology, the present invention provides a sampling device for rare earth ore wastewater detection.

[0004] The technical implementation scheme of the present invention is as follows: a sampling device for rare earth ore wastewater detection, comprising a sampling box, the sampling box being driven by a driving device to achieve lifting and lowering, a third sampling cylinder being provided in the middle of the sampling box, two first sampling cylinders and two second sampling cylinders being provided with the third sampling cylinder as the symmetrical center, the first sampling cylinder and the second sampling cylinder being movable relative to the third sampling cylinder by an adjusting device, and the distance between the second sampling cylinder and the third sampling cylinder and the vertical distance between the first sampling cylinder and the corresponding second sampling cylinder being always kept equal, and a movable slot for the first sampling cylinder and the second sampling cylinder to move;

[0005] The third sampling cylinder includes a piston cylinder arranged in the middle of the sampling box, the piston cylinder is uncovered and a fixed plate is fixedly connected to the opening, the piston plate is sealed and movably connected inside the piston cylinder, a water inlet is provided on the fixed plate, the water inlet is connected to a water inlet pipe, a connecting valve is installed on the water inlet pipe, a second nozzle for cleaning the inner wall of the piston cylinder and a first nozzle for drying are installed on the piston plate, the settings of the first sampling cylinder and the second sampling cylinder are the same as those of the third sampling cylinder; wherein, the piston plate is driven by a pushing device to realize movement relative to the fixed plate.

[0006] More preferably, the piston plate includes a first mounting block that is sealed, slidingly and rotatably connected to the piston cylinder, a second mounting block is fixedly connected to the side of the first mounting block close to the fixed plate, an air cavity and a water cavity are respectively provided inside the first mounting block and the second mounting block, the first mounting block is conical, the second mounting block is cylindrical, the first nozzle is circumferentially arranged on the inclined side wall of the first mounting block and connected to the air cavity, the second nozzle is arranged on a side surface of the second mounting block close to the fixed plate and connected to the water cavity, the outer wall of the second mounting block is in sealing contact with the inner wall of the piston cylinder, and an air vent for gas circulation is provided at the end of the piston cylinder away from the opening.

[0007] More preferably, the fixed plate includes an annular cylinder fixedly connected to one end of the piston cylinder, a movable plate is sealed and slidably connected inside the annular cylinder, an elastic member is provided between the movable plate and the annular cylinder, a first connecting port and a second connecting port are respectively provided on the movable plate and the annular cylinder, a telescopic hose is sealedly connected between the first connecting port and the second connecting port, and the first connecting port, the second connecting port and the telescopic hose together constitute a water inlet.

[0008] More preferably, the connecting valve includes a valve body connected between the water inlet pipe and the water inlet, a valve ball is sealed and rotatably connected in the valve body, a valve stem is fixedly connected to one side of the valve ball, the valve stem passes through the valve body and extends to the outside of the valve body, the valve stem is hollow, a sensor is installed on the outer wall of the valve body, a sensor is provided in the valve ball, the sensor passes through the valve stem and is electrically connected to the sensor, a driving motor is installed on the outer wall of the valve body, a first gear is fixedly connected to the output shaft of the driving motor, and a second gear meshing with the first gear is fixedly connected to the valve stem.

[0009] More preferably, the adjustment device includes a longitudinal guide plate symmetrically fixed in the sampling box, a transverse guide plate is slidably connected to the longitudinal guide plate, the piston cylinder is fixed to the corresponding transverse guide plate, a fixed rod is fixed to the outer wall of the transverse guide plate, a first movable frame is slidably connected in the sampling box, the first movable frame is driven to slide by a first electric push rod installed in the sampling box, the first guide plate and the second guide plate are symmetrically fixed on the first movable frame, the fixed rod slides in the corresponding first guide plate or the second guide plate, wherein the first guide plate and the second guide plate are inclined, and the projection lengths of the first guide plate and the second guide plate in the vertical direction remain equal, but the length of the first guide plate is twice that of the second guide plate.

[0010] More preferably, the pushing device includes a second movable frame slidably connected to the inside of the sampling box, and the second movable frame is driven to slide by a second electric push rod installed in the sampling box. A movable groove is provided on the second movable frame, and five sliding plates are provided in the movable groove. A pushing rod is provided between the sliding plate and the piston plate.

[0011] More preferably, one end of the push rod is rotatably connected to the sliding plate, and the other end is fixedly connected to the first mounting block. A fixing ring is fixedly connected between the two lateral guide plates. A spiral groove is provided on the push rod, and a card ball matching the spiral groove is fixedly connected in the fixing ring. The push rod is hollow, and two straight tubes are provided inside the push rod, one of which is connected to the air cavity, and the other is connected to the water cavity. A water tank is fixedly connected to the sampling box, and a hot air blower and a water pump are installed on the outside of the water tank. The hot air blower is connected to the corresponding straight tube through a corrugated hose, one end of the water pump is connected to the water tank, and the other end is connected to the corresponding straight tube through another corrugated hose.

[0012] More preferably, the driving device includes a mounting plate, on which a third electric telescopic rod is mounted, the telescopic rod of the third electric telescopic rod is fixedly connected to the sampling box, and a foot pedal and a handle are fixedly connected to the side surface of the mounting plate away from the sampling box.

[0013] More preferably, a thread is provided at one end of the water inlet pipe away from the piston cylinder, and a filter cartridge is threadedly connected to one end of the water inlet pipe, the filter cartridge is provided with filter holes for filtering, and a shield for shielding the movable groove is fixed to the water inlet pipe. Beneficial effects

[0014] 1. The present invention is provided with a first nozzle, a second nozzle and a piston plate and other components. After the sampling is completed, the second nozzle is used to clean the inside of the piston cylinder, and then the first nozzle is used to dry the inner wall of the piston cylinder to complete the cleaning of the inner wall of the piston cylinder. This can avoid cross contamination and avoid affecting subsequent sampling.

[0015] 2. The present invention is provided with components such as a fixed plate. When the piston plate contacts the fixed plate, the piston plate continues to approach the annular cylinder, and then the piston plate squeezes the movable plate, so that the elastic member stores elastic potential energy. When the second mounting block completely enters the annular cylinder, the first nozzle can dry the dead corners, avoiding the residual water stains, thereby ensuring that the entire interior of the piston cylinder can be fully dried. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 It is a cross-sectional view of the sampling box, water tank, second sampling tube and other components of the present invention.

[0018] Figure 3 It is a partial schematic diagram of the first sampling cylinder, the second sampling cylinder and the third sampling cylinder of the present invention.

[0019] Figure 4 It is a cross-sectional view of the piston cylinder, fixed plate, piston plate and other components of the present invention.

[0020] Figure 5It is a cross-sectional view of the fixing plate of the present invention.

[0021] Figure 6 This is a cross-sectional view of the piston plate and piston cylinder of the present invention.

[0022] Figure 7 It is a cross-sectional view of the connecting valve of the present invention.

[0023] Figure 8 It is a cross-sectional view of the piston cylinder, longitudinal guide plate, transverse guide plate and other components of the present invention.

[0024] Figure 9 It is a cross-sectional view of the piston plate, push rod, hot air blower and other components of the present invention.

[0025] Figure 10 It is a partial schematic diagram of the second electric push rod, the second movable frame, the sliding plate and other components of the present invention.

[0026] Figure 11 This is a first state diagram of components such as the piston plate and the fixed plate of the present invention.

[0027] Figure 12 This is a second state diagram of components such as the piston plate and the fixed plate of the present invention.

[0028] The parts in the accompanying drawings are marked as follows: 10. Piston cylinder, 1001. Air vent, 11. Fixed plate, 111. Annular cylinder, 112. Movable plate, 113. Elastic member, 114. Telescopic hose, 1121. First connecting port, 1111. Second connecting port, 12. Piston plate, 122. First mounting block, 123. Second mounting block, 1221. Air cavity, 1231. Water cavity, 13. First nozzle, 14. Second nozzle, 15. Connecting valve, 151. Valve body, 152. Valve ball, 153. Valve stem, 154. Sensor, 155. Sensor, 156. Drive motor, 157. First gear, 158. Second gear, 16. Water inlet pipe, 21. Longitudinal Guide plate, 22. lateral guide plate, 23. fixed rod, 24. first movable frame, 25. first guide plate, 26. second guide plate, 27. first electric push rod, 31. second movable frame, 311. movable groove, 32. sliding plate, 33. second electric push rod, 34. push rod, 341. spiral groove, 35. fixed ring, 36. card ball, 41. water tank, 42. hot air blower, 43. water pump, 44. pleated hose, 45. straight pipe, 51. mounting plate, 52. foot pedal, 53. third electric telescopic rod, 54. handle, 6. sampling box, 61. movable groove, 62. shield, 7. filter cartridge, 81. first sampling cartridge, 82. second sampling cartridge, 83. third sampling cartridge. DETAILED DESCRIPTION

[0029] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] A sampling device for detecting rare earth ore wastewater, such as Figures 1-12 As shown, it includes a sampling box 6, which is driven by a driving device to achieve lifting, and a third sampling tube 83 is provided in the middle of the sampling box 6, and the first sampling tube 81 and the second sampling tube 82 are both provided with two symmetrical centers around the third sampling tube 83, that is, in order from top to bottom, the first sampling tube 81, the second sampling tube 82, the third sampling tube 83, the second sampling tube 82 and the first sampling tube 81 are arranged in this order, and the first sampling tube 81 and the second sampling tube 82 are both moved relative to the third sampling tube 83 by an adjusting device, and the vertical distance between the second sampling tube 82 and the third sampling tube 83 and the vertical distance between the first sampling tube 81 and the second sampling tube 82 corresponding to the same side are always kept equal, so that the representativeness of each section of water body can be guaranteed, the error caused by inconsistent sampling spacing can be avoided, and the accuracy of the detection result can be improved. A sampling cylinder 81 and a second sampling cylinder 82 are movable in a movable groove 61; the third sampling cylinder 83 includes a piston cylinder 10 arranged in the middle of the sampling box 6, the piston cylinder 10 is a coverless type and a fixed plate 11 is fixedly connected to the opening, and a piston plate 12 is sealed and movably connected inside the piston cylinder 10, and a water inlet is provided on the fixed plate 11. The water inlet is connected to a water inlet pipe 16, which extends to the outside of the sampling box 6. The water inlet pipe 16 is "L"-shaped to facilitate subsequent water collection. A connecting valve 15 is installed on the water inlet pipe 16, and the connecting valve 15 is arranged inside the sampling box 6 to prevent contamination by sewage. A second nozzle 14 for cleaning the inner wall of the piston cylinder 10 and a first nozzle 13 for drying are installed on the piston plate 12. The settings of the first sampling cylinder 81 and the second sampling cylinder 82 are the same as those of the third sampling cylinder 83; wherein, the piston plate 12 is driven by a pushing device to achieve movement relative to the fixed plate 11;

[0031] It can be seen that when sampling, the pushing device is first used to push the piston plate 12 toward the fixed plate 11, and the fixed plate 11 contacts the piston plate 12, so that the air inside the piston cylinder 10 is emptied, ensuring that the negative pressure during sampling can be smoothly generated, and then the connecting valve 15 is closed, and the adjusting device is used to adjust the vertical distance between the second sampling cylinder 82 and the third sampling cylinder 83 and the vertical distance between the first sampling cylinder 81 and the corresponding second sampling cylinder 82 to obtain a uniform sample, and then the sampling box 6 is placed into the sewage of the rare earth ore through the driving device. After it is lowered to the sampling position, the connecting valve 15 is opened and the pushing device is started at the same time, so that the piston plate 12 is away from the fixed plate 11, and then the inside of the piston cylinder 10 generates suction due to the negative pressure, so that the sewage is sucked into the inside of the piston cylinder 10 through the water inlet pipe 16 and the water inlet. After the sampling work is completed, the connecting valve 15 is closed and the passage is opened. The sampling box 6 is taken out by the driving device, and then the pushing device is started and the connecting valve 15 is opened, so that the piston plate 12 is pushed toward the fixed plate 11, and then the sewage inside the piston cylinder 10 is pushed out from the water inlet and the water inlet pipe 16 by the piston plate 12. Use a container to collect water at the water inlet pipe 16 to obtain the sampled sewage. When the piston plate 12 contacts the fixed plate 11, it means that the sewage inside the piston cylinder 10 has been completely discharged. Then the device is reset, the connecting valve 15 is closed, and the second nozzle 14 is used to clean the inside of the piston cylinder 10. After cleaning is completed, the connecting valve 15 is opened, and the piston plate 12 is pushed by the pushing device to discharge the sewage cleaned inside the piston cylinder 10. After repeating three times, use the first nozzle 13 to dry the inner wall of the piston cylinder 10 to complete the cleaning of the inner wall of the piston cylinder 10. This can avoid cross-contamination and affect subsequent sampling.

[0032] Furthermore, in order to facilitate the use of the present device, the driving device includes a mounting plate 51, on which a third electric telescopic rod 53 is mounted, the telescopic rod of the third electric telescopic rod 53 is fixedly connected to the sampling box 6, and a foot pedal 52 and a grip 54 are fixedly connected to the side surface of the mounting plate 51 away from the sampling box 6, the foot pedal 52 is arranged at the lower end of the mounting plate 51, and the grip 54 is arranged at the upper end of the mounting plate 51. It can be seen that when using the present device, the foot pedal 52 is placed on the ground by the river, one foot is used to step on the foot pedal 52, and one hand is used to hold the grip 54, so that the mounting plate 51 is fixed on the shore. On the side, ensure that the entire device will not slide or shift during use, and then start the third electric telescopic rod 53. The telescopic rod of the third electric telescopic rod 53 drives the sampling box 6 to move up and down, ensuring that the sampling box 6 can accurately reach the sampling position and take samples. At the same time, using the third electric telescopic rod 53, the staff can easily adjust the height of the sampling box 6 to ensure that the sampling box 6 accurately enters the water or takes samples out of the water. In this way, the staff only needs to stabilize the device through the foot pedal 52 and the handle 54. It is simple and intuitive, reduces cumbersome steps, and makes the overall operation easier and more efficient.

[0033] Furthermore, in order to better clean the interior of the piston cylinder 10, the piston plate 12 includes a first mounting block 122 that is sealed, slidably, and rotatably connected to the piston cylinder 10. The first mounting block 122 is fixedly connected to a second mounting block 123 on one side close to the fixed plate 11. An air cavity 1221 and a water cavity 1231 are respectively provided inside the first mounting block 122 and the second mounting block 123. The first mounting block 122 is conical, and the first nozzle 13 is circumferentially arranged on the inclined side wall of the first mounting block 122 and communicated with the air cavity 1221. The conical design of the first mounting block 122 leaves a gap between the first mounting block 122 and the inner wall of the piston cylinder 10. The piston cylinder 10 is dried during operation, and an air vent 1001 for gas circulation is provided at one end away from the opening, so that the gas can flow out conveniently. The second mounting block 123 is cylindrical, and the second nozzle 14 is provided on one side of the second mounting block 123 close to the fixed plate 11 and is connected to the water cavity 1231. The outer wall of the second mounting block 123 is in sealing contact with the inner wall of the piston cylinder 10. It can be seen that the cleaning liquid and the drying gas enter the water cavity 1231 and the air cavity 1221 respectively, and the cleaning liquid is sprayed out by the second nozzle 14, and the drying gas is sprayed out by the first nozzle 13. When the inside of the piston cylinder 10 needs to be cleaned, the device is reset to the state shown in FIG. Figure 4 As shown, the connecting valve 15 is then closed, and the cleaning liquid then enters the water chamber 1231, and is sprayed out by the second nozzle 14, thereby cleaning the inner wall of the piston cylinder 10. After the cleaning is completed, the pushing device is started and the connecting valve 15 is opened. The pushing device drives the piston plate 12 to move toward the fixed plate 11, thereby squeezing out the cleaning liquid inside the piston cylinder 10, thereby achieving the effect of cleaning the inner wall of the piston cylinder 10. After repeating this three times, the inside of the piston cylinder 10 can be cleaned, but water stains will still remain on the inner wall. At this time, the pushing device is started again. , so that the piston plate 12 slowly approaches the fixed plate 11, and at the same time, drying gas is introduced into the air cavity 1221, and the drying gas is sprayed out by the first nozzle 13. The drying gas can dry the water stains remaining on the inner wall of the piston cylinder 10, so that it can be ensured that the piston cylinder 10 will not be contaminated by the previous round of samples each time the sampling is carried out, thereby improving the accuracy and representativeness of the sample. It should be added that, since the outer wall of the second mounting block 123 is in sealed contact with the inner wall of the piston cylinder 10, the liquid (referring to the sampled sewage and cleaning liquid) will only be stored in the piston cylinder 10. Figure 4 The left end position will not go over the second mounting block 123 to reach the inside of the piston cylinder 10. Figure 4 At the right end, in order to prevent the liquid or gas from flowing back or the liquid from the second nozzle 14 into the water cavity 1231, a one-way valve is provided between the first nozzle 13 and the air cavity 1221 and between the second nozzle 14 and the water cavity 1231. The cleaning liquid is specifically clean water, and the drying gas is specifically hot air.

[0034] Furthermore, due to the thickness limitation of the piston plate 12, it is inevitable that part of the piston cylinder 10 will not be completely dried after the piston plate 12 contacts the fixed plate 11. The present device can solve this problem. The fixed plate 11 includes an annular cylinder 111 fixedly connected to one end of the piston cylinder 10, and a movable plate 112 is sealed and slidably connected in the annular cylinder 111. The diameter of the movable plate 112 is greater than or equal to the second mounting block 123. An elastic member 113 is provided between the movable plate 112 and the annular cylinder 111. The elastic member 113 is specifically a spring. A first connecting port 1121 and a second connecting port 1111 are respectively provided on the movable plate 112 and the annular cylinder 111. A telescopic hose 114 is sealed and connected between the first connecting port 1121 and the second connecting port 1111. The first connecting port 1121, the second connecting port 1111 and the telescopic hose 114 together constitute a water inlet. It can be seen that when the piston plate 12 contacts the fixed plate 11, as shown in FIG. Figure 11 As shown, at this time, the second mounting block 123 is still in contact with part of the inner wall of the piston cylinder 10, so that the drying gas cannot completely dry the inner wall of the piston cylinder 10, and there will still be dead corners that cannot be completely cleaned. At this time, the piston plate 12 continues to approach the annular cylinder 111, and then the piston plate 12 squeezes the movable plate 112, so that the elastic member 113 stores elastic potential energy. When the second mounting block 123 completely enters the annular cylinder 111, as shown in FIG. Figure 12 As shown, the first nozzle 13 can now dry the dead corners, avoiding residual water stains, thus ensuring that the entire interior of the piston cylinder 10 can be fully dried.

[0035] Furthermore, in order to more accurately control the distance between the first sampling tube 81, the second sampling tube 82 and the third sampling tube 83, and at the same time to ensure the representativeness of each section of the water body and avoid errors caused by inconsistent sampling intervals, the adjustment device includes a longitudinal guide plate 21 symmetrically fixed to the sampling box 6, the longitudinal guide plate 21 is arranged at the movable groove 61, and a transverse guide plate 22 is slidably connected to the longitudinal guide plate 21. The piston cylinder 10 is fixed to the corresponding transverse guide plate 22, and a fixed rod 23 is fixed to the outer wall of the transverse guide plate 22. A first movable frame 24 is slidably connected to the sampling box 6, and the first movable frame 24 is installed in the sampling box 6. The first electric push rod 27 in the sample box 6 is driven to slide. The first guide plate 25 and the second guide plate 26 are symmetrically fixed to the first movable frame 24. That is, from top to bottom, the first guide plate 25, the second guide plate 26, the second guide plate 26 and the first guide plate 25 are arranged in the order of the first guide plate 25, the second guide plate 26 and the first guide plate 25. The fixed rod 23 slides in the corresponding first guide plate 25 or the second guide plate 26, that is, the fixed rod 23 on the first sampling barrel 81 slides in the first guide plate 25, and the fixed rod 23 on the second sampling barrel 82 slides in the second guide plate 26, wherein the first guide plate 25 and the second guide plate 26 are arranged obliquely, and the first guide plate 25 and the second guide plate 26 are arranged obliquely. The projection lengths in the vertical direction of the first and second guide plates 25 and 26 remain equal, but the length of the first guide plate 25 is twice that of the second guide plate 26, so that the distance moved by the first sampling tube 81 is twice that of the second sampling tube 82. It can be seen that when the first electric push rod 27 is started, the telescopic rod of the first electric push rod 27 retracts, thereby driving the first movable frame 24 to retract, so that the first guide plate 25 and the second guide plate 26 squeeze the corresponding fixed rod 23, thereby causing the first sampling tube 81 and the second sampling tube 82 to move toward the third sampling tube 83. Since the distance moved by the first sampling tube 81 is twice that of the second sampling tube 82, the second sampling tube 82 and the third sampling tube 83 are moved together. The vertical distance between the tubes 83 and the vertical distance between the first sampling tube 81 and the corresponding second sampling tube 82 are always kept equal. Since the vertical position of the third sampling tube 83 is fixed, the sampling depth can be calculated by the position of the third sampling tube 83. At the same time, the first guide plate 25 and the second guide plate 26 and other components can ensure that the sampling spacing in the vertical direction is always equal, ensuring that the representativeness of each section of water body is guaranteed, avoiding errors caused by inconsistent sampling spacing, and improving the accuracy of the detection results. At the same time, the first guide plate 25 and the second guide plate 26 are used to adjust the sampling spacing to adapt to different types of sampling scenarios.

[0036] Furthermore, in order to achieve a better cleaning effect, the pushing device includes a second mobile frame 31 slidably connected to the inside of the sampling box 6. The second mobile frame 31 is driven by a second electric push rod 33 installed in the sampling box 6 to slide. A moving groove 311 is provided on the second mobile frame 31. Five sliding plates 32 are provided in the moving groove 311. A pushing rod 34 is provided between the sliding plate 32 and the piston plate 12. One end of the pushing rod 34 is rotatably connected to the sliding plate 32, and the other end is fixed to the first mounting block 122. A fixing ring 35 is fixed between the two transverse guide plates 22. A spiral groove 311 is provided on the pushing rod 34. 41, a card ball 36 that matches the spiral groove 341 is fixedly connected in the fixing ring 35, the push rod 34 is hollow, and two straight tubes 45 are arranged inside the push rod 34, one of which is connected to the air cavity 1221, and the other is connected to the water cavity 1231. A water tank 41 is fixedly connected in the sampling box 6, and the water tank 41 is filled with cleaning liquid. A hot air blower 42 and a water pump 43 are installed outside the water tank 41. The hot air blower 42 is connected to the corresponding straight tube 45 through a pleated hose 44. One end of the water pump 43 is connected to the water tank 41, and the other end is connected to the corresponding straight tube 45 through another pleated hose 44. It can be seen that starting the The second electric push rod 33, and then the telescopic rod of the second electric push rod 33 drives the second mobile frame 31 to move, and then the second mobile frame 31 drives the push rod 34 and the piston plate 12 to move. When cleaning is needed, the water pump 43 is started, and then the water pump 43 transports the cleaning liquid in the water tank 41 through the corresponding pleated hose 44 and the corresponding straight pipe 45 to the water cavity 1231, and the cleaning liquid is sprayed out by the second nozzle 14 to achieve the purpose of cleaning the piston cylinder 10. When the inner wall of the piston cylinder 10 needs to be dried, the hot air blower 42 is started, and the hot air blower 42 passes the drying gas through the corresponding pleated hose 44 and the corresponding The straight tube 45 transports the gas into the air cavity 1221, and the drying gas is sprayed out by the first nozzle 13. While the push rod 34 moves, the spiral groove 341 on the outer wall of the push rod 34 engages with the blocking ball 36, thereby causing the push rod 34 to rotate, and then the push rod 34 drives the piston plate 12 to rotate, and then drives the first nozzle 13 and the second nozzle 14 to rotate. This ensures that the cleaning liquid and drying gas can contact every corner of the inner wall of the piston cylinder 10, improves the comprehensiveness and effect of cleaning, and ensures that the inner wall of the piston cylinder 10 can be thoroughly cleaned. At the same time, rotation can also prevent liquid or gas from accumulating in certain parts.

[0037] Furthermore, in order to more conveniently and accurately understand the data of sewage, such as water temperature, the temperature change of sewage may affect other water quality parameters, such as dissolved oxygen, pollutant degradation rate, etc., the connecting valve 15 of the present device includes a valve body 151 connected between the water inlet pipe 16 and the water inlet, and a valve ball 152 is sealed and rotatably connected in the valve body 151. A valve stem 153 is fixedly connected to one side of the valve ball 152. The valve stem 153 passes through the valve body 151 and extends to the outside of the valve body 151. The valve stem 153 is hollow. A sensor 155 is installed on the outer wall of the valve body 151, and a sensor 154 is provided in the valve ball 152. The sensor 154 is specifically a thermal sensor. The sensor 154 passes through the valve stem 153 and is electrically connected to the sensor 155. A drive motor 156 is installed on the outer wall of the valve body 151, and the output shaft of the drive motor 156 is fixedly connected to the second A gear 157 is provided, and a second gear 158 is fixedly connected to the valve stem 153 and is engaged with the first gear 157. It can be seen that when the piston cylinder 10 sucks in sewage, the sewage passes through the inside of the valve ball 152, and then the sensor 154 generates an electrical signal according to the change of the water flow temperature. The signal of the sensor 154 is transmitted to the sensor 155. The sensor 155 receives the signal and records the electrical signal transmitted by the sensor 154. These signals represent the data of the water flow temperature, which makes it more convenient and accurate to understand the sewage data. At the same time, the drive motor 156 is started, and the output shaft of the drive motor 156 drives the first gear 157 to rotate. The first gear 157 drives the second gear 158 to rotate through meshing transmission, and the second gear 158 drives the valve ball 152 to rotate, so that the opening and closing of the water inlet pipe 16 can be controlled to ensure precise control.

[0038] Furthermore, in order to prevent solid particles from entering the interior of the piston cylinder 10, a thread is provided on the end of the water inlet pipe 16 away from the piston cylinder 10, and a filter cartridge 7 is threadedly connected to one end of the water inlet pipe 16. The filter cartridge 7 is provided with filter holes for filtering. The filter cartridge 7 can prevent solid impurities from entering the interior of the piston cylinder 10, and the filter cartridge 7 is threadedly connected to the water inlet pipe 16, which can facilitate the replacement of filter cartridges 7 with different filter hole diameters. In this way, when processing different water qualities, a suitable filter hole diameter can be selected to ensure that the filtering effect meets the requirements and increase the adaptability of the device. A shield 62 for blocking the movable groove 61 is fixedly connected to the water inlet pipe 16. The setting of the shield 62 can prevent sewage from entering the sampling box 6.

[0039] Although the present disclosure has been shown and described with reference to certain exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made to the present disclosure without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above-described embodiments, but should be determined not only by the appended claims but also by the equivalents of the appended claims.

Claims

1. A sampling device for rare earth ore wastewater detection, characterized in that: The invention comprises a sampling box (6), the sampling box (6) is driven by a driving device to realize lifting and lowering, a third sampling cylinder (83) is provided in the middle of the sampling box (6), two first sampling cylinders (81) and two second sampling cylinders (82) are provided with the third sampling cylinder (83) as the symmetrical center, the first sampling cylinder (81) and the second sampling cylinder (82) are both moved relative to the third sampling cylinder (83) by an adjusting device, and the distance between the second sampling cylinder (82) and the third sampling cylinder (83) and the vertical distance between the first sampling cylinder (81) and the corresponding second sampling cylinder (82) are always kept equal, and a movable groove (61) for the first sampling cylinder (81) and the second sampling cylinder (82) to move is provided on the sampling box (6); The third sampling cylinder (83) includes a piston cylinder (10) arranged in the middle of the sampling box (6), the piston cylinder (10) is of a coverless type and a fixed plate (11) is fixedly connected to the opening thereof, a piston plate (12) is sealed and movably connected to the piston cylinder (10), a water inlet is provided on the fixed plate (11), the water inlet is connected to a water inlet pipe (16), a connecting valve (15) is installed on the water inlet pipe (16), a second nozzle (14) for cleaning the inner wall of the piston cylinder (10) and a first nozzle (13) for drying are installed on the piston plate (12), and the settings of the first sampling cylinder (81) and the second sampling cylinder (82) are the same as those of the third sampling cylinder (83); wherein, the piston plate (12) is driven by a pushing device to realize movement relative to the fixed plate (11); The piston plate (12) includes a first mounting block (122) that is sealed, slidably, and rotatably connected to the piston cylinder (10). A second mounting block (123) is fixedly connected to a side of the first mounting block (122) close to the fixed plate (11). An air cavity (1221) and a water cavity (1231) are respectively provided inside the first mounting block (122) and the second mounting block (123). The first mounting block (122) is conical, and the second mounting block (123) is cylindrical. The first nozzle (13) is circumferentially arranged on the inclined side wall of the first mounting block (122) and communicates with the air cavity (1221). The second nozzle (14) is arranged on a side surface of the second mounting block (123) close to the fixed plate (11) and communicates with the water cavity (1231). The outer wall of the second mounting block (123) is in sealed contact with the inner wall of the piston cylinder (10). An air vent (1001) for gas circulation is provided at the end of the piston cylinder (10) away from the opening.

2. A sampling device for detecting rare earth ore wastewater according to claim 1, characterized in that: The fixed plate (11) comprises an annular cylinder (111) fixedly connected to the opening of the piston cylinder (10); a movable plate (112) is sealingly and slidably connected inside the annular cylinder (111); an elastic member (113) is provided between the movable plate (112) and the annular cylinder (111); a first connecting port (1121) and a second connecting port (1111) are respectively provided on the movable plate (112) and the annular cylinder (111); a telescopic hose (114) is sealedly connected between the first connecting port (1121) and the second connecting port (1111); and the first connecting port (1121), the second connecting port (1111) and the telescopic hose (114) together constitute a water inlet.

3. A sampling device for detecting rare earth ore wastewater according to claim 1, characterized in that: The connecting valve (15) includes a valve body (151) connected between the water inlet pipe (16) and the water inlet, a valve ball (152) is connected to the valve body (151) in a sealed and rotatable manner, a valve stem (153) is fixedly connected to one side of the valve ball (152), the valve stem (153) passes through the valve body (151) and extends to the outside of the valve body (151), the valve stem (153) is hollow, a sensor (155) is installed on the outer wall of the valve body (151), a sensor (154) is provided in the valve ball (152), the sensor (154) passes through the valve stem (153) and is electrically connected to the sensor (155), a driving motor (156) is installed on the outer wall of the valve body (151), a first gear (157) is fixedly connected to the output shaft of the driving motor (156), and a second gear (158) meshing with the first gear (157) is fixedly connected to the valve stem (153).

4. A sampling device for detecting rare earth ore wastewater according to claim 1, characterized in that: The adjusting device includes a longitudinal guide plate (21) symmetrically fixed in the sampling box (6), a transverse guide plate (22) is slidably connected to the longitudinal guide plate (21), a piston cylinder (10) is fixed to the corresponding transverse guide plate (22), a fixed rod (23) is fixed to the outer wall of the transverse guide plate (22), a first movable frame (24) is slidably connected in the sampling box (6), the first movable frame (24) is driven to slide by a first electric push rod (27) installed in the sampling box (6), a first guide plate (25) and a second guide plate (26) are symmetrically fixed to the first movable frame (24), and the fixed rod (23) slides in the corresponding first guide plate (25) or the second guide plate (26); wherein the first guide plate (25) and the second guide plate (26) are inclined, and the vertical projection lengths of the first guide plate (25) and the second guide plate (26) remain equal, but the length of the first guide plate (25) is twice that of the second guide plate (26).

5. A sampling device for detecting rare earth ore wastewater according to claim 4, characterized in that: The pushing device includes a second movable frame (31) slidably connected to the inside of the sampling box (6), the second movable frame (31) is driven by a second electric push rod (33) installed in the sampling box (6) to achieve sliding, a movable groove (311) is provided on the second movable frame (31), five sliding plates (32) are provided in the movable groove (311), and a pushing rod (34) is provided between the sliding plate (32) and the piston plate (12).

6. A sampling device for detecting rare earth ore wastewater according to claim 5, characterized in that: One end of the push rod (34) is rotatably connected to the sliding plate (32), and the other end is fixed to the first mounting block (122). A fixing ring (35) is fixed between the two transverse guide plates (22). A spiral groove (341) is provided on the push rod (34). A ball (36) that matches the spiral groove (341) is fixed inside the fixing ring (35). The push rod (34) is hollow. Two straight tubes (45) are provided inside the push rod (34), one of which is a straight tube. The tube (45) is connected to the air cavity (1221), and the other is connected to the water cavity (1231). A water tank (41) is fixedly connected to the sampling box (6). A hot air blower (42) and a water pump (43) are installed outside the water tank (41). The hot air blower (42) is connected to the corresponding straight tube (45) through a pleated hose (44). One end of the water pump (43) is connected to the water tank (41), and the other end is connected to the corresponding straight tube (45) through another pleated hose (44).

7. A sampling device for detecting rare earth ore wastewater according to claim 1, characterized in that: The driving device includes a mounting plate (51), a third electric telescopic rod (53) is mounted on the mounting plate (51), the telescopic rod of the third electric telescopic rod (53) is fixedly connected to the sampling box (6), and a foot pedal (52) and a grip (54) are fixedly connected to a side surface of the mounting plate (51) away from the sampling box (6).

8. A sampling device for detecting rare earth ore wastewater according to any one of claims 1 to 7, characterized in that: One end of the water inlet pipe (16) away from the piston cylinder (10) is provided with a thread, and one end of the water inlet pipe (16) is threadedly connected to a filter cartridge (7), the filter cartridge (7) is provided with filter holes for filtering, and a shielding plate (62) for shielding the movable groove (61) is fixedly connected to the water inlet pipe (16).

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