Soil screening device and method based on geological detection

Abstract

The invention discloses a soil screening device and method based on geological detection, and particularly relates to the technical field of geological detection.The soil screening device comprises two supporting frames, the two supporting frames are symmetrically distributed, a screening mechanism is arranged at the tops of the two supporting frames, and a material containing device is arranged at one end of the screening mechanism; the screening mechanism comprises a screening outer barrel, a discharging outer pipe is integrally formed at the bottom of the screening outer barrel, a first valve is fixedly mounted on the discharging outer pipe, and a rotating transverse pipe is rotatably mounted on one side of the screening outer barrel through a bearing. Compared with the traditional manual grinding in the primary state of the soil, the mode can effectively improve the grinding and screening efficiency of the soil by performing synchronous grading grinding on the soil subjected to multi-stage screening, so that the subsequent structure detection on the soil is facilitated.

Description

Technical Field

[0001] This invention relates to the field of geological testing technology, specifically to a soil screening device and method for geological testing. Background Technology

[0002] In fields such as geological surveys, mineral resource exploration, environmental quality assessment, agricultural soil research, and geological surveys for construction projects, the composition and particle size analysis of soil samples is a crucial foundational task. In order to obtain accurate analytical data, it is necessary to perform standardized pretreatment on the collected raw soil samples. The core steps include crushing, grinding, and sieving, with the aim of processing the non-uniform blocky samples into analytical samples with uniform particles that meet specific particle size requirements. However, existing soil screening devices mostly rely on manual hand-held sieves that are repeatedly shaken or patted, which not only consumes a lot of manpower but also has extremely low screening efficiency. Alternatively, mechanical vibrating sieves are used to apply vibration to automatically screen the soil. In this screening method, the sieve is always in a horizontal position, which easily causes the sieve holes to become clogged. Furthermore, this screening method requires separate manual grinding of the soil before screening, which affects the overall soil testing efficiency. Therefore, we propose a soil screening device and method for geological testing to solve the above problems. Summary of the Invention

[0003] The purpose of this invention is to provide a soil screening device and method for geological testing to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a soil screening device for geological testing, comprising a support frame, wherein two support frames are symmetrically distributed, a screening mechanism is provided on the top of the two support frames, and a material placement device is provided at one end of the screening mechanism; The screening mechanism includes a screening outer cylinder, with a discharge outer pipe integrally formed at the bottom of the screening outer cylinder. A first valve is fixedly installed on the discharge outer pipe. A rotating horizontal pipe is rotatably installed on one side of the screening outer cylinder via a bearing. A first ball frame, a second ball frame, and a third ball frame are arranged sequentially from the inside to the outside of the screening outer cylinder. The first ball frame, the second ball frame, and the third ball frame are fixedly installed at the inner end of the rotating horizontal pipe. A first chamber is formed in the first ball frame. A second chamber is formed between the outer side of the first ball frame and the inner side of the second ball frame. A third chamber is formed between the outer side of the second ball frame and the inner side of the third ball frame. Grinding balls are provided in the first, second, and third chambers.

[0005] As a preferred embodiment of the present invention, the first ball frame includes two symmetrically distributed first frames, with a first screen frame between the two first frames; the second ball frame includes two symmetrically distributed second frames, with a second screen frame between the two second frames; the third ball frame includes two symmetrically distributed third frames, with a third screen frame between the two third frames; the aperture sizes of the first, second, and third screen frames decrease sequentially; one of the first, second, and third frames is fixedly installed at the inner end of the rotating horizontal tube; and the middle portion of the other first, second, and third frames is respectively fixedly installed with a first discharge pipe, a second discharge pipe, and a third discharge pipe. The first, second, and third discharge pipes extend out of the outer side of the screening outer cylinder, and the third discharge pipe is rotatably installed on the side of the screening outer cylinder away from the rotating horizontal tube; the inner diameters of the first, second, and third discharge pipes gradually increase.

[0006] As a preferred embodiment of the present invention, a limiting sealing ring is fixedly provided at the inner end of the rotating horizontal tube, and a liquid guiding tube is movably inserted into the middle of the limiting sealing ring. A sealing inner ring is fixedly installed at the end of the liquid guiding tube away from the limiting sealing ring, and the sealing inner ring is movably engaged in the rotating horizontal tube. The end of the liquid guiding tube away from the sealing inner ring extends out of the inner end of the rotating horizontal tube and is fixedly installed with a sealing plate. A sealing rubber ring is provided on the inner side of the sealing plate, and the sealing rubber ring is movably engaged in the inner end of the rotating horizontal tube. A drain port is opened on the side of the liquid guiding tube near the limiting sealing ring, and a spring is movably sleeved on the outer side of the liquid guiding tube between the sealing inner ring and the sealing inner ring.

[0007] As a preferred embodiment of the present invention, a plurality of fixing members arranged in a circular array are fixedly installed on the side of the first frame near the first screen frame by screws. Fixing screws are threaded on the fixing members, and the ends of the fixing screws are threaded on the first screen frame. The connection method between the second frame and the second screen frame is the same as the connection method between the first frame and the first screen frame. The connection method between the third frame and the third screen frame is the same as the connection method between the first frame and the first screen frame.

[0008] As a preferred embodiment of the present invention, a sealing rotating component is fixedly installed at the outer end of the rotating horizontal tube, a connecting clamp is fixedly installed at the middle part of the sealing rotating component, a connecting bracket is fixedly installed on the outer side of the connecting clamp, and the connecting bracket is fixedly installed on the outer side of the screening outer cylinder.

[0009] As a preferred embodiment of the present invention, a crown gear is fixedly installed at the outer end of the rotating horizontal tube, and a first motor is fixedly installed on the outer wall of the screening outer cylinder near the crown gear. A drive gear is fixedly installed at the drive end of the first motor, and the drive gear and the crown gear are meshed together.

[0010] As a preferred embodiment of the present invention, a rotating horizontal shaft is fixedly installed on the outer side of the screening outer cylinder. The rotating horizontal shaft is rotatably installed on the top of the support frame. A worm gear is fixedly installed at one end of the rotating horizontal shaft. A worm is meshed with the bottom of the worm gear. The worm is rotatably installed on the support frame. A second motor is fixedly installed on the support frame near the worm. The drive end of the second motor and the shaft end of the worm are fixedly installed.

[0011] As a preferred embodiment of the present invention, the material placement device includes a first guide frame, a second guide frame is provided on the outside of the first guide frame, and a third guide frame is provided on the outside of the second guide frame. An inner support is fixedly installed between the first guide frame, the second guide frame, and the third guide frame. A first guide channel is formed on the inside of the first guide frame. A second guide channel is formed between the outside of the first guide frame and the inside of the second guide frame. A third guide channel is formed between the outside of the second guide frame and the inside of the third guide frame. A first threaded head is fixedly engaged at one end of the first guide frame, the second guide frame, and the third guide frame. The material placement device is threaded onto the outer ends of the first discharge pipe, the second discharge pipe, and the third discharge pipe through the end of the first threaded head. A material placement frame is threaded onto the end of the first guide frame, the second guide frame, and the third guide frame away from the first threaded head. The material placement frame is provided with a first material placement groove, a second material placement groove, and a third material placement groove that are respectively connected to the first guide channel, the second guide channel, and the third guide channel.

[0012] As a preferred embodiment of the present invention, the soil screening device further includes a cover, and a second threaded head is provided on one side of the cover. The cover is threadedly installed on the outer end of the third discharge pipe through the second threaded head.

[0013] A method for using a soil screening device for geological testing includes the following steps: Step 1: When it is necessary to test the particle size distribution of the soil, there is no need to grind the soil simultaneously during sieving. At this time, it is not necessary to add grinding balls to the first, second and third chambers. Turn on the second motor to drive the worm gear to rotate the worm wheel, thereby controlling the sieving mechanism to flip. Control the first, second and third discharge pipes to flip to the upper position, and introduce the processed soil into the first chamber through the first discharge pipe. By turning on the first motor, the drive gear drives the crown gear to rotate, thereby controlling the rotating horizontal tube to drive the first ball frame, the second ball frame and the third ball frame to rotate synchronously. The soil introduced into the first chamber is tumbled and screened in multiple stages through the first screen frame, the second screen frame and the third screen frame. Step 2: After screening, each stage of soil needs to be sorted and discharged. At this time, the last stage of soil is discharged separately through the discharge pipe. Then, the feeding device is installed at the outer end of the first discharge pipe, the second discharge pipe and the third discharge pipe. Then, the screening mechanism is flipped so that the feeding device is flipped to the position below the screening mechanism. The soil screened in the first, second and third bins is synchronously and isolatedly introduced into the corresponding first feeding trough, second feeding trough and third feeding trough through the first feeding channel, the second feeding channel and the third feeding channel respectively, so as to automatically classify and isolate the screened soil for discharge. Step 3: Connect the end of the connecting tube to the output pump on the cleaning fluid output system. After the soil screening is completed and the material is discharged, the output pump on the cleaning fluid output system can be turned on. The cleaning fluid is directly introduced into the rotating horizontal tube through the connecting tube. At this time, the pressure in the liquid guide tube increases and pushes out the sealing plate. The spring is compressed and the discharge port moves out of the inner end of the rotating horizontal tube. The cleaning fluid is discharged through the discharge port and introduced into the first ball frame. Then it is introduced into the second ball frame, the third ball frame and the screening outer cylinder. With the rotation of the first ball frame, the second ball frame, the third ball frame and the screening outer cylinder are automatically cleaned. Step 4: When conducting structural testing on the soil, it is necessary to grind and sieve the soil. At this time, flip the sieve mechanism, flip the material feeding device to the upper position, and disassemble the material feeding frame. Then, guide the grinding balls into the corresponding first, second, and third bins through the first, second, and third material feeding channels, respectively. Subsequently, the feeding device is disassembled, and the cap is threaded onto the outer end of the third discharge pipe through the second threaded head to seal the ends of the first, second, and third discharge pipes. Subsequently, the screening mechanism is flipped again, causing the first, second, and third discharge pipes to flip to the upper position, and the soil is introduced into the first bin through the first discharge pipe; Then, the screening mechanism is flipped over again, causing the discharge outer pipe to flip to the lower position; Step 5: Start the first motor to drive the drive gear to rotate the crown gear, thereby controlling the rotating horizontal tube to drive the first, second, and third ball frames to rotate synchronously. The soil introduced into the first chamber is tumbled and screened in multiple stages through the first, second, and third sieve frames. In conjunction with the grinding balls, the soil screened in the first, second, and third chambers is further graded and ground synchronously, making the soil finer and screened out more quickly. The soil falls uniformly into the outer screening cylinder, and the finely screened soil is discharged through the discharge pipe by opening the first valve for subsequent soil sample testing.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By setting up a screening mechanism, the soil is subjected to tumbling multi-stage screening. In conjunction with grinding balls, the soil screened in the first, second and third bins is further graded and ground simultaneously. Compared with the traditional manual grinding of soil in its initial state, this method can effectively improve the efficiency of soil grinding and screening by simultaneously grading and grinding the soil screened in multiple stages, so as to facilitate subsequent soil structure testing.

[0015] 2. By setting up a screening mechanism, the soil is tumbled and screened in multiple stages. With the help of a feeding device, the soil screened in the first, second and third bins can be simultaneously and isolated and introduced into the corresponding first, second and third feeding troughs through the first, second and third feeding channels, respectively, so as to automatically classify and isolate the screened soil for subsequent soil particle size distribution detection. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the structural connection of the present invention.

[0019] Figure 3 This is a schematic diagram of the screening mechanism in this invention.

[0020] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle.

[0021] Figure 5 This is a schematic diagram of the partial structural connection of the screening mechanism in this invention.

[0022] Figure 6 For the present invention Figure 5 Enlarged view of point B in the middle.

[0023] Figure 7 This is a schematic diagram of the structure of the end of the rotating horizontal tube in this invention.

[0024] Figure 8 This is a schematic diagram showing the structural connection of the fluid guiding tube, sealing disc, and sealing ring in this invention.

[0025] Figure 9 This is a schematic diagram of the material feeding device in this invention.

[0026] Figure 10 This is a schematic diagram of the cap structure in this invention.

[0027] In the diagram: 1. Support frame; 2. Screening mechanism; 3. Feeding device; 4. Rotating horizontal shaft; 41. Worm gear; 42. Worm; 43. Second motor; 5. Limiting sealing ring; 51. Liquid guiding tube; 52. Sealing inner ring; 53. Sealing plate; 54. Sealing rubber ring; 55. Spring; 501. Drain port; 6. Crown gear; 61. First motor; 62. Drive gear; 7. Cover; 71. Second threaded head; 8. Grinding ball; 21. Screening outer cylinder; 211. Discharge outer pipe; 212. First valve; 22. Rotating horizontal pipe; 221. Sealing rotating component; 22 2. Connecting clamp; 223. Connecting bracket; 23. First frame; 231. First screen frame; 232. First discharge pipe; 24. Second frame; 241. Second screen frame; 242. Second discharge pipe; 25. Third frame; 251. Third screen frame; 252. Third discharge pipe; 26. Fixing component; 261. Fixing screw; 31. First guide frame; 32. Second guide frame; 33. Third guide frame; 34. First threaded head; 35. Material placement frame; 351. First material placement trough; 352. Second material placement trough; 353. Third material placement trough; 36. Inner bracket. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example: Figure 1-10 As shown, the present invention provides a soil screening device for geological testing, including a support frame 1, two symmetrically distributed support frames 1, a screening mechanism 2 on the top of the two support frames 1, and a material placement device 3 at one end of the screening mechanism 2. The screening mechanism 2 includes a screening outer cylinder 21. The bottom of the screening outer cylinder 21 is integrally formed with a discharge outer pipe 211. A first valve 212 is fixedly installed on the discharge outer pipe 211. A rotating horizontal pipe 22 is rotatably installed on one side of the screening outer cylinder 21 via a bearing. A first ball frame, a second ball frame, and a third ball frame are arranged sequentially from the inside to the outside of the screening outer cylinder 21. The first ball frame, the second ball frame, and the third ball frame are fixedly installed at the inner end of the rotating horizontal pipe 22. A first chamber is formed in the first ball frame. A second chamber is formed between the outer side of the first ball frame and the inner side of the second ball frame. A third chamber is formed between the outer side of the second ball frame and the inner side of the third ball frame. Grinding balls 8 are provided in the first chamber, the second chamber, and the third chamber.

[0030] The first spherical frame includes two symmetrically distributed first frames 23, with a first sieve frame 231 between the two first frames 23. The second spherical frame includes two symmetrically distributed second frames 24, with a second sieve frame 241 between the two second frames 24. The third spherical frame includes two symmetrically distributed third frames 25, with a third sieve frame 251 between the two third frames 25. The sieve aperture sizes of the first sieve frame 231, the second sieve frame 241, and the third sieve frame 251 decrease sequentially. By setting the first sieve frame 231, the second sieve frame 241, and the third sieve frame 251 with sequentially decreasing sieve aperture sizes, it is convenient to perform rolling multi-stage screening of the soil introduced into the first chamber. One of the first frames 23, 24, and 25 is fixedly installed at the inner end of the rotating horizontal tube 22. The middle part of the other first frame 23, 24, and 25 is respectively fixedly installed with a first discharge pipe 232, a second discharge pipe 242, and a third discharge pipe 252. The first discharge pipe 232, the second discharge pipe 242, and the third discharge pipe 252 extend out of the outer side of the screening outer cylinder 21. The third discharge pipe 252 is rotatably installed on the side of the screening outer cylinder 21 away from the rotating horizontal tube 22. The inner diameter of the first discharge pipe 232, the second discharge pipe 242, and the third discharge pipe 252 gradually increases. The soil to be screened is introduced into the first bin through the first discharge pipe 232.

[0031] A crown gear 6 is fixedly installed at the outer end of the rotating horizontal tube 22. A first motor 61 is fixedly installed on the outer wall of the screening outer cylinder 21 near the crown gear 6. A drive gear 62 is fixedly installed at the drive end of the first motor 61. The drive gear 62 and the crown gear 6 are meshed and connected. By turning on the first motor 61, the drive gear 62 drives the crown gear 6 to rotate, thereby controlling the rotating horizontal tube 22 to drive the first ball frame, the second ball frame and the third ball frame to rotate synchronously. The soil introduced into the first chamber is tumbled and screened in multiple stages through the first screen frame 231, the second screen frame 241 and the third screen frame 251. With the grinding balls 8 in place, the soil in the first, second and third chambers is further graded and ground in a simultaneous manner. Compared with the traditional manual grinding of soil in its initial state, this method can effectively improve the efficiency of soil grinding and sieving by simultaneously grading and grinding the soil in a multi-stage sieve. This allows the soil to be finer and sieved more quickly, and then uniformly falls into the outer sieve cylinder 21. By opening the first valve 212, the finely sieved soil is discharged through the discharge pipe 211 for subsequent soil sample testing.

[0032] A limiting sealing ring 5 is fixedly fastened to the inner end of the rotating horizontal tube 22. A liquid guiding tube 51 is movably inserted into the middle of the limiting sealing ring 5. A sealing inner ring 52 is fixedly installed at the end of the liquid guiding tube 51 away from the limiting sealing ring 5. The sealing inner ring 52 is movably engaged in the rotating horizontal tube 22. The end of the liquid guiding tube 51 away from the sealing inner ring 52 extends out of the inner end of the rotating horizontal tube 22 and is fixedly installed with a sealing plate 53. A sealing rubber ring 54 is provided on the inner side of the sealing plate 53. The sealing rubber ring 54 is movably engaged in the inner end of the rotating horizontal tube 22. A drain port 501 is opened on the side of the liquid guiding tube 51 near the limiting sealing ring 5. A spring 55 is movably sleeved on the outer side of the liquid guiding tube 51 between the sealing inner ring 52 and the sealing inner ring 52. A sealing rotating component 221 is fixedly installed at the outer end of the rotating horizontal tube 22. A connecting clamp tube 222 is fixedly installed in the middle of the sealing rotating component 221. The outer side of the connecting clamp tube 222 is fixedly... A connecting bracket 223 is fixedly installed on the outside of the screening outer cylinder 21, connecting the end of the connecting clamp tube 222 to the output pump on the cleaning liquid output system. After the soil screening is completed, the output pump on the cleaning liquid output system can be turned on, and the cleaning liquid is directly introduced into the rotating horizontal tube 22 through the connecting clamp tube 222. At this time, the pressure in the liquid guide tube 51 increases and pushes out the sealing plate 53. The spring 55 is compressed, and the drain port 501 moves out of the inner end of the rotating horizontal tube 22. The cleaning liquid is discharged through the drain port 501 and introduced into the first ball frame, and then into the second ball frame, the third ball frame and the screening outer cylinder 21. With the rotation of the first ball frame, the second ball frame, the third ball frame and the screening outer cylinder 21 are automatically cleaned to facilitate the subsequent soil screening operation and prevent cross-contamination during soil testing.

[0033] On the side of the first frame 23 near the first screen frame 231, a plurality of fasteners 26 arranged in a circular array are fixedly installed by screws. The fasteners 26 are threaded with fixing screws 261, and the ends of the fixing screws 261 are threaded onto the first screen frame 231. The connection method of the second frame 24 and the second screen frame 241 is the same as that of the first frame 23 and the first screen frame 231. The connection method of the third frame 25 and the third screen frame 251 is the same as that of the first frame 23 and the first screen frame 231, which facilitates the assembly and disassembly of the first frame 23 and the first screen frame 231, the second frame 24 and the second screen frame 241, and the third frame 25 and the third screen frame 251.

[0034] A rotating horizontal shaft 4 is fixedly installed on the outer side of the screening outer cylinder 21. The rotating horizontal shaft 4 is rotatably installed on the top of the support frame 1. A worm gear 41 is fixedly installed at one end of the rotating horizontal shaft 4. A worm 42 is meshed with the bottom of the worm gear 41. The worm 42 is rotatably installed on the support frame 1. A second motor 43 is fixedly installed on the side of the support frame 1 near the worm 42. The drive end of the second motor 43 and the shaft end of the worm 42 are fixedly installed. When soil is fed, the second motor 43 is turned on to drive the worm 42 to drive the worm gear 41 to rotate, thereby controlling the screening mechanism 2 to flip. This controls the first discharge pipe 232, the second discharge pipe 242 and the third discharge pipe 252 to flip to the upper position, so that the material can be fed through the first discharge pipe 232.

[0035] The feeding device 3 includes a first guide frame 31, a second guide frame 32 on the outside of the first guide frame 31, and a third guide frame 33 on the outside of the second guide frame 32. An inner support 36 is fixedly installed between the first guide frame 31, the second guide frame 32, and the third guide frame 33. A first guide channel is formed on the inside of the first guide frame 31, a second guide channel is formed between the outside of the first guide frame 31 and the inside of the second guide frame 32, and a third guide channel is formed between the outside of the second guide frame 32 and the inside of the third guide frame 33. The third material guiding channel has a first threaded head 34 fixedly fastened to one end of the first guide frame 31, the second guide frame 32, and the third guide frame 33. The material placement device 3 is threadedly installed at the outer end of the first discharge pipe 232, the second discharge pipe 242, and the third discharge pipe 252 via the end thread of the first threaded head 34. A material placement frame 35 is threadedly installed at the end of the first guide frame 31, the second guide frame 32, and the third guide frame 33 away from the first threaded head 34. The material placement frame 35 contains a connection to the first guide channel, the second... The feeding channel and the third feeding channel are respectively connected to the first feeding trough 351, the second feeding trough 352, and the third feeding trough 353. When the soil particle size distribution is detected, there is no need to grind the soil simultaneously during sieving. At this time, there is no need to add grinding balls 8 to the first, second, and third bins. After subsequent sieving, each level of soil needs to be classified and discharged. At this time, the last level of soil is discharged separately through the discharge pipe 211. Then, the feeding device 3 is installed at the outer end of the first discharge pipe 232, the second discharge pipe 242, and the third discharge pipe 252. Then, the sieving mechanism 2 is flipped so that the feeding device 3 is flipped to the position below the sieving mechanism 2. The soil screened in the first, second, and third bins is synchronously isolated and introduced into the corresponding first feeding trough 351, second feeding trough 352, and third feeding trough 353 through the first feeding channel, the second feeding channel, and the third feeding channel, respectively, for automatic classification and isolation discharge of the screened soil for subsequent soil particle size distribution detection.

[0036] The soil screening device also includes a cover 7. A second threaded head 71 is provided on one side of the cover 7. The cover 7 is threaded onto the outer end of the third discharge pipe 252 through the second threaded head 71. During the grading and grinding screening, the cover 7 is threaded onto the outer end of the third discharge pipe 252 through the second threaded head 71 to seal the ends of the first discharge pipe 232, the second discharge pipe 242 and the third discharge pipe 252, so as to prevent soil from overflowing and causing pollution to the working environment during the grinding and screening.

[0037] A method for using a soil screening device for geological testing includes the following steps: Step 1: When it is necessary to test the particle size distribution of the soil, there is no need to grind the soil simultaneously during sieving. At this time, it is not necessary to add grinding balls 8 to the first, second and third chambers. Turn on the second motor 43 to drive the worm gear 42 to drive the worm wheel 41 to rotate, thereby controlling the sieving mechanism 2 to flip. Control the first discharge pipe 232, the second discharge pipe 242 and the third discharge pipe 252 to flip to the upper position, and introduce the processed soil into the first chamber through the first discharge pipe 232. By turning on the first motor 61, the drive gear 62 drives the crown gear 6 to rotate, thereby controlling the rotating horizontal tube 22 to drive the first ball frame, the second ball frame and the third ball frame to rotate synchronously, and the soil introduced into the first chamber is tumbled and screened in multiple stages through the first screen frame 231, the second screen frame 241 and the third screen frame 251. Step 2: After screening, each level of soil needs to be sorted and discharged. At this time, the last level of soil is discharged separately through the discharge pipe 211. Then, the feeding device 3 is installed at the outer end of the first discharge pipe 232, the second discharge pipe 242 and the third discharge pipe 252. Then, the screening mechanism 2 is flipped so that the feeding device 3 is flipped to the position below the screening mechanism 2. The soil screened in the first, second and third bins is synchronously isolated and introduced into the corresponding first feeding trough 351, second feeding trough 352 and third feeding trough 353 through the first feeding channel, the second feeding channel and the third feeding channel respectively, so as to automatically classify and isolate the screened soil for discharge. Step 3: Connect the end of the connecting tube 222 to the output pump on the cleaning fluid output system. After the soil screening is completed and the material is discharged, the output pump on the cleaning fluid output system can be turned on. The cleaning fluid is directly introduced into the rotating horizontal tube 22 through the connecting tube 222. At this time, the pressure in the liquid guide tube 51 increases and pushes out the sealing plate 53. The spring 55 is compressed, and the discharge port 501 moves out of the inner end of the rotating horizontal tube 22. The cleaning fluid is discharged through the discharge port 501 and introduced into the first ball frame. Then, it is introduced into the second ball frame, the third ball frame and the screening outer cylinder 21. With the rotation of the first ball frame, the second ball frame and the third ball frame, the first ball frame, the second ball frame, the third ball frame and the screening outer cylinder 21 are automatically cleaned. Step 4: When conducting structural testing on the soil, it is necessary to grind and sieve the soil. At this time, flip the sieve mechanism 2, flip the material feeding device 3 to the upper position, and disassemble the material feeding frame 35. Then, guide the grinding balls 8 into the corresponding first, second, and third bins through the first, second, and third material feeding channels respectively. Subsequently, the feeding device 3 is disassembled, and the cover 7 is threaded onto the outer end of the third discharge pipe 252 through the second threaded head 71 to seal the ends of the first discharge pipe 232, the second discharge pipe 242 and the third discharge pipe 252. Subsequently, the screening mechanism 2 is flipped again, causing the first discharge pipe 232, the second discharge pipe 242 and the third discharge pipe 252 to flip to the upper position, and the soil is introduced into the first bin through the first discharge pipe 232; Subsequently, the screening mechanism 2 is flipped again, causing the discharge outer pipe 211 to flip to the lower position; Step 5: Start the first motor 61 to drive the drive gear 62 to drive the crown gear 6 to rotate, thereby controlling the rotating horizontal tube 22 to drive the first ball frame, the second ball frame and the third ball frame to rotate synchronously. The soil introduced into the first chamber is tumbled and screened in multiple stages through the first screen frame 231, the second screen frame 241 and the third screen frame 251. With the grinding balls 8 set, the soil screened in the first, second and third chambers is further graded and ground in a synchronous manner, so that the soil is finer and screened out more quickly. It falls uniformly into the screening outer cylinder 21. By opening the first valve 212, the finely screened soil is discharged through the discharge outer pipe 211 for subsequent soil sample testing.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A soil screening device for geological testing, comprising a support frame (1), characterized in that: The support frame (1) has two symmetrically distributed supports, and the top of the two supports (1) is provided with a screening mechanism (2), and one end of the screening mechanism (2) is provided with a material placement device (3). The screening mechanism (2) includes a screening outer cylinder (21), and a discharge outer pipe (211) is integrally formed at the bottom of the screening outer cylinder (21). A first valve (212) is fixedly installed on the discharge outer pipe (211). A rotating horizontal pipe (22) is rotatably installed on one side of the screening outer cylinder (21) through a bearing. A first ball frame, a second ball frame and a third ball frame are arranged sequentially from the inside to the outside of the screening outer cylinder (21). The first ball frame, the second ball frame and the third ball frame are fixedly installed at the inner end of the rotating horizontal pipe (22). A first chamber is formed in the first ball frame. A second chamber is formed between the outer side of the first ball frame and the inner side of the second ball frame. A third chamber is formed between the outer side of the second ball frame and the inner side of the third ball frame. Grinding balls (8) are provided in the first chamber, the second chamber and the third chamber.

2. The soil screening device for geological testing according to claim 1, characterized in that: The first ball frame includes two symmetrically distributed first frames (23), with a first sieve frame (231) between the two first frames (23). The second ball frame includes two symmetrically distributed second frames (24), with a second sieve frame (241) between the two second frames (24). The third ball frame includes two symmetrically distributed third frames (25), with a third sieve frame (251) between the two third frames (25). The aperture sizes of the first sieve frame (231), the second sieve frame (241), and the third sieve frame (251) decrease sequentially. One of the first frames (23), the second frame (24), and the third frame (25) is fixedly installed. The first discharge pipe (232), the second discharge pipe (242), and the third discharge pipe (252) are respectively fixedly installed in the middle part of the first frame (23), the second frame (24), and the third frame (25) installed in the inner end of the rotating horizontal tube (22). The first discharge pipe (232), the second discharge pipe (242), and the third discharge pipe (252) extend out of the outer side of the screening outer cylinder (21). The third discharge pipe (252) is rotatably installed on the side of the screening outer cylinder (21) away from the rotating horizontal tube (22). The inner diameter of the first discharge pipe (232), the second discharge pipe (242), and the third discharge pipe (252) gradually increases.

3. The soil screening device for geological testing according to claim 2, characterized in that: The inner end of the rotating horizontal tube (22) is fixedly provided with a limiting sealing ring (5). A liquid guiding tube (51) is movably inserted in the middle of the limiting sealing ring (5). A sealing inner ring (52) is fixedly installed at the end of the liquid guiding tube (51) away from the limiting sealing ring (5). The sealing inner ring (52) is movably engaged in the rotating horizontal tube (22). The end of the liquid guiding tube (51) away from the sealing inner ring (52) extends out of the inner end of the rotating horizontal tube (22) and is fixedly installed with a sealing plate (53). A sealing rubber ring (54) is provided on the inner side of the sealing plate (53). The sealing rubber ring (54) is movably engaged in the inner end of the rotating horizontal tube (22). A drain port (501) is opened on the side of the liquid guiding tube (51) near the limiting sealing ring (5). A spring (55) is movably sleeved on the outer side of the liquid guiding tube (51) between the sealing inner ring (52) and the sealing inner ring (52).

4. The soil screening device for geological testing according to claim 3, characterized in that: The first frame (23) is fixedly mounted with a plurality of fasteners (26) arranged in a ring array on one side near the first screen frame (231) by screws. The fasteners (26) are threaded with fixing screws (261), and the ends of the fixing screws (261) are threaded onto the first screen frame (231). The connection method between the second frame (24) and the second screen frame (241) is the same as that between the first frame (23) and the first screen frame (231). The connection method between the third frame (25) and the third screen frame (251) is the same as that between the first frame (23) and the first screen frame (231).

5. A soil screening device for geological testing according to claim 4, characterized in that: A sealing rotating component (221) is fixedly installed at the outer end of the rotating horizontal tube (22). A connecting clamp tube (222) is fixedly installed in the middle of the sealing rotating component (221). A connecting bracket (223) is fixedly installed on the outer side of the connecting clamp tube (222). The connecting bracket (223) is fixedly installed on the outer side of the screening outer cylinder (21).

6. A soil screening device for geological testing according to claim 5, characterized in that: The outer end of the rotating horizontal tube (22) is fixedly installed with a crown gear (6), and the outer wall of the screening outer cylinder (21) is fixedly installed with a first motor (61) on the side close to the crown gear (6). The drive end of the first motor (61) is fixedly installed with a drive gear (62), and the drive gear (62) and the crown gear (6) are meshed together.

7. A soil screening device for geological testing according to claim 6, characterized in that: A rotating horizontal shaft (4) is fixedly installed on the outer side of the screening outer cylinder (21). The rotating horizontal shaft (4) is rotatably installed on the top of the support frame (1). A worm gear (41) is fixedly installed at one end of the rotating horizontal shaft (4). A worm (42) is meshed with the bottom of the worm gear (41). The worm (42) is rotatably installed on the support frame (1). A second motor (43) is fixedly installed on the side of the support frame (1) near the worm (42). The drive end of the second motor (43) and the shaft end of the worm (42) are fixedly installed.

8. A soil screening device for geological testing according to claim 7, characterized in that: The feeding device (3) includes a first guide frame (31), a second guide frame (32) is provided on the outside of the first guide frame (31), and a third guide frame (33) is provided on the outside of the second guide frame (32). An inner bracket (36) is fixedly installed between the first guide frame (31), the second guide frame (32), and the third guide frame (33). A first guide channel is formed on the inside of the first guide frame (31), a second guide channel is formed between the outside of the first guide frame (31) and the inside of the second guide frame (32), and a third guide channel is formed between the outside of the second guide frame (32) and the inside of the third guide frame (33). The material frame (32) and the third guide frame (33) are fixedly fitted with a first threaded head (34) at one end. The material placement device (3) is installed on the outer end of the first discharge pipe (232), the second discharge pipe (242) and the third discharge pipe (252) through the end thread of the first threaded head (34). The first guide frame (31), the second guide frame (32) and the third guide frame (33) are threadedly fitted with a material placement frame (35) at the end away from the first threaded head (34). The material placement frame (35) is provided with a first material placement groove (351), a second material placement groove (352) and a third material placement groove (353) that are respectively connected to the first guide channel, the second guide channel and the third guide channel.

9. A soil screening device for geological testing according to claim 8, characterized in that: The soil screening device also includes a cover (7), on one side of which is provided a second threaded head (71), and the cover (7) is threadedly installed on the outer end of the third discharge pipe (252) through the second threaded head (71).

10. A method of using the soil screening device for geological testing as described in claim 9, characterized in that, Includes the following steps: Step 1: When it is necessary to test the particle size distribution of the soil, there is no need to grind the soil simultaneously during sieving. At this time, it is not necessary to add grinding balls (8) to the first, second and third chambers. Turn on the second motor (43) to drive the worm (42) to drive the worm wheel (41) to rotate, thereby controlling the sieving mechanism (2) to flip, controlling the first discharge pipe (232), the second discharge pipe (242) and the third discharge pipe (252) to flip to the upper position, and the processed soil is introduced into the first chamber through the first discharge pipe (232); By turning on the first motor (61) to drive the drive gear (62) to drive the crown gear (6) to rotate, the rotating horizontal tube (22) is controlled to drive the first ball frame, the second ball frame and the third ball frame to rotate synchronously. The soil introduced into the first chamber is tumbled and screened in multiple stages through the first screen frame (231), the second screen frame (241) and the third screen frame (251). Step 2: After screening, each level of soil needs to be classified and discharged. At this time, the last level of soil is discharged separately through the discharge pipe (211). Then, the feeding device (3) is installed at the outer end of the first discharge pipe (232), the second discharge pipe (242) and the third discharge pipe (252). Then, the screening mechanism (2) is flipped so that the feeding device (3) is flipped to the position below the screening mechanism (2). The soil screened in the first, second and third bins is synchronously isolated and introduced into the corresponding first feeding trough (351), second feeding trough (352) and third feeding trough (353) through the first feeding channel, the second feeding channel and the third feeding channel respectively, so as to carry out automatic classification and isolation discharge of the screened soil. Step 3: Connect the end of the connecting tube (222) to the output pump on the cleaning liquid output system. After the soil screening is completed and the material is discharged, the output pump on the cleaning liquid output system can be turned on. The cleaning liquid is directly introduced into the rotating horizontal tube (22) through the connecting tube (222). At this time, the pressure in the liquid guide tube (51) increases and pushes out the sealing plate (53). The spring (55) is compressed and the discharge port (501) moves out of the inner end of the rotating horizontal tube (22). The cleaning liquid is discharged through the discharge port (501) and introduced into the first ball frame. Then it is introduced into the second ball frame, the third ball frame and the screening outer cylinder (21). With the rotation of the first ball frame, the second ball frame, the third ball frame and the screening outer cylinder (21) are automatically cleaned. Step 4: When conducting structural testing on the soil, it is necessary to grind and sieve the soil. At this time, flip the sieve mechanism (2), flip the material placement device (3) to the upper position, and disassemble the material placement frame (35). Then, introduce the grinding balls (8) into the corresponding first, second and third bins through the first guide channel, the second guide channel and the third guide channel respectively. Subsequently, the feeding device (3) is disassembled, and the cap (7) is threaded onto the outer end of the third discharge pipe (252) through the second threaded head (71) to seal the ends of the first discharge pipe (232), the second discharge pipe (242) and the third discharge pipe (252); Subsequently, the screening mechanism (2) is flipped again, causing the first discharge pipe (232), the second discharge pipe (242) and the third discharge pipe (252) to flip to the upper position, and the soil is introduced into the first bin through the first discharge pipe (232); Subsequently, the screening mechanism (2) is flipped again, causing the discharge outer pipe (211) to flip to the lower position; Step 5: Turn on the first motor (61) to drive the drive gear (62) to drive the crown gear (6) to rotate, thereby controlling the rotating horizontal tube (22) to drive the first ball frame, the second ball frame and the third ball frame to rotate synchronously. The soil introduced into the first chamber is tumbled and screened in multiple stages through the first sieve frame (231), the second sieve frame (241) and the third sieve frame (251). With the grinding balls (8) set, the soil screened in the first, second and third chambers is further graded and ground synchronously, so that the soil is fined more quickly and screened out, and falls uniformly into the screening outer cylinder (21). By opening the first valve (212), the finely screened soil is discharged through the discharge outer pipe (211) for subsequent soil sample testing.

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