A geotechnical engineering investigation drilling sampling dust removal device

Abstract

The application discloses a geotechnical engineering investigation drilling sampling dust removal device and relates to the technical field of geotechnological sampling. The dust removal device comprises a mounting suspension frame and a dust removal cover component. The dust removal cover component comprises an upper cylinder cover and a lower conical cover body, and a sampling drill bit penetrates through the upper cylinder cover and the lower conical cover body. The inner side of the lower conical cover body is provided with a conical filter screen body, and at least one gas outlet port is arranged on the side wall of the lower conical cover body. The dust removal device further comprises a material scraping assembly and an air flow negative pressure assembly. The air inlet end of the air flow negative pressure assembly is connected with the gas outlet port. The material scraping assembly comprises a plurality of material scraping pieces and a driving piece. A plurality of side through holes are formed in the side wall of the upper cylinder cover, and the outer wall of the upper cylinder cover is provided with a rotating ring sleeve rotating thereon. The top of the material scraping piece is connected with the rotating ring sleeve through a connecting rod penetrating through the side through hole. The dust removal device has the advantages of simple structure, dust removal through the collection of fine particles, no change in the properties of the geotechnological sample, effective improvement of the construction environment and high practicability.

Description

Technical Field

[0001] The invention relates to the technical field of rock and soil sampling, in particular to a rock and soil engineering survey drilling sampling dust removal device. Background Art

[0002] Geotechnical engineering investigation refers to the activities of identifying, analyzing, and evaluating the geological, environmental characteristics and geotechnical conditions of the construction site and compiling investigation documents according to the requirements of the construction project. In geotechnical investigation and research, it is necessary to use a drilling device to drill holes in the investigation ground to take samples, and provide a basis for geotechnical investigation and analysis by observing the distribution of rocks or soil layers at different depths.

[0003] During the geotechnical engineering survey and drilling process, rock and soil particles will be lifted and diffused externally, thus affecting the entire construction environment. Therefore, dust removal is required during geotechnical engineering survey and drilling. Existing dust removal devices used in geotechnical engineering survey and drilling construction use two methods to remove dust: spraying rain and mist and sucking away dust particles with a vacuum machine. The vacuum machine sucking away dust particles can easily cause incomplete rock and soil samples taken during geotechnical engineering survey drilling, affecting the accuracy of survey data. Spraying rain and mist can easily cause the rain and mist to combine with the rock and soil samples, thereby changing the moisture and other components in the rock and soil samples, which can also affect the accuracy of survey data. Summary of the Invention

[0004] The object of the present invention is to provide a dust removal device for sampling by drilling in geotechnical engineering investigation, so as to solve the problems raised in the background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A dust removal device for drilling sampling in geotechnical engineering investigation, comprising a mounting suspension frame connected to a drilling device and a dust removal cover component covering the outer side of a sampling drill bit, wherein the dust removal cover component comprises an upper cylinder cover and a lower conical cover body, the upper cylinder cover and the lower conical cover body are connected as a whole, and the sampling drill bit passes through the upper cylinder cover and the lower conical cover body, the upper part of the upper cylinder cover is fixed on the mounting suspension frame, and the lower conical cover body is arranged on the lower side of the upper cylinder cover; the inner side of the lower conical cover body is provided with a conical filter body, and an air cavity is formed between the conical filter body and the inner wall of the lower conical cover body, and at least one air outlet port connected to the air cavity is provided on the side wall of the lower conical cover body. ; It also includes a scraper assembly and an airflow negative pressure assembly, the air inlet end of the airflow negative pressure assembly is connected to the air outlet port; under the action of the airflow negative pressure assembly sucking away the airflow, the dust particles generated by the sampling drill bit drilling are attached to the inner wall of the conical filter body under the guidance of the airflow; the scraper assembly includes a plurality of scraper members attached to the inner wall of the conical filter body and a driving member arranged on the mounting suspension frame, a plurality of side openings are opened on the side wall of the upper cylinder cover and the outer wall of the upper cylinder cover has a rotating ring sleeve that rotates thereon, the top of the scraper member is connected to the rotating ring sleeve through the side opening by a connecting rod, and the driving member is used to drive the rotating ring sleeve to rotate forward and reverse.

[0007] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

[0008] In an optional solution: the driving member includes a driving motor, a bar frame and an outer gear ring sleeved on a rotating ring sleeve, the driving motor is arranged on a mounting suspension frame and the output end of the driving motor has a driving disk, and an eccentric driving column is provided on the end face of the driving disk, the bar frame is slidably arranged on the mounting suspension frame and the end of the eccentric driving column extends to the inner side of the bar frame, the side of the eccentric driving column has a driving rack and the driving rack is engaged with the outer gear ring.

[0009] In an optional scheme: the airflow negative pressure component includes a negative pressure chassis, a guide pipe and an annular shell arranged on the outer side wall of the lower conical cover body, the annular shell and the outer wall of the lower conical cover body form a convergence ring cavity, and the convergence ring cavity is connected to the air cavity body through the air outlet port; the negative pressure chassis is arranged on the mounting suspension frame and the air inlet end of the negative pressure chassis is connected to the interior of the annular shell through the guide pipe.

[0010] In an optional solution: the scraper includes a material guide trough, a top cover and a scraper strip, the top cover is connected to the rotating ring sleeve through a connecting rod, the scraper strip is arranged on one side of the material guide trough, and one side of the scraper strip is attached to the inner wall of the conical filter body. The scraper strip can scrape the particles on the inner wall of the conical filter body to the inner side of the material guide trough.

[0011] In an optional solution: the bottom edge of the lower conical cover body is provided with a collection trough centered on the center line of the upper cylinder cover, the inner wall of the collection trough is provided with a material introduction port, the lower end of the material guide channel extends through the material introduction port to the interior of the collection trough, and the collection trough is detachably connected to the inner wall of the conical filter body.

[0012] In an optional scheme: it also includes a material blocking cover assembly located at the bottom of the dust removal cover component, the material blocking cover assembly includes a fixed ring, an endless belt winding piece and an endless belt traction piece, the fixed ring is looped on the bottom of the dust removal cover component and fixedly connected thereto, the endless belt winding piece and the endless belt traction piece are both installed on the fixed ring, the endless belt winding piece and the fixed ring can be rotatably connected and an endless belt body is wound on the endless belt winding piece; the endless belt traction piece is slidably fitted with the outer side wall of the fixed ring and the endless belt traction piece can rotate around the outer side of the fixed ring, the fixed ring also has a plurality of annularly distributed fixed guide rollers, and the end of the endless belt body away from the endless belt winding piece is connected to the endless belt traction piece.

[0013] In an optional scheme: the endless belt winding member includes a winding shaft, a winding roller and a scraper arc plate, the winding shaft is rotatably arranged on the side wall of the fixed ring through a bracket, the winding roller is arranged on the winding shaft and is used to wind the endless belt body; the bracket has a fixed part and the scraper arc plate is fixed on the side of the fixed part, and one side of the scraper arc plate extends to the inner side surface of the endless belt body.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The dust cover component of the present invention can cover the sampling drill bit, and the airflow negative pressure component sucks away the airflow inside the dust cover component, and the airflow can guide the particles to the inner wall of the conical filter body, thereby preventing the particles in the rock and soil samples from being emitted to the outside and affecting the construction environment;

[0016] 2. The scraping assembly of the present invention can scrape off the particles attached to the conical filter body and guide them to a position with lower air flow velocity, thereby effectively avoiding blockage and re-lifting of particles, making it easier to collect the particles;

[0017] 3. The present invention has a simple structure and can remove dust by collecting particles without changing the properties of rock and soil samples, effectively improving the construction environment and having strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the overall structure of the dust removal device in one embodiment of the present invention.

[0019] Figure 2 Schematic diagram of the structure of the dust cover component in one embodiment of the present invention.

[0020] Figure 3 Schematic diagram of the scraper structure in one embodiment of the present invention.

[0021] Figure 4 Schematic diagram of the structure of the material blocking cover assembly in one embodiment of the present invention.

[0022] Figure 5 Schematic diagram of the structure of an endless belt winding member in one embodiment of the present invention.

[0023] Notes on figure marks: installation suspension frame 1, dust removal cover component 2, upper cylinder cover 21, side port 211, lower conical cover body 22, conical filter body 23, air cavity body 24, air outlet port 25, scraper 26, rotating ring sleeve 261, material guide channel 262, top cover part 263, scraper strip 264, collection trough 27, material guide port 271, sampling drill bit 3, drive motor 4, bar frame 41, outer gear ring 42, drive disk 43, eccentric drive column 44, drive rack 45, annular shell 5, negative pressure chassis 6, guide pipe 61, material blocking cover assembly 7, fixed ring 71, endless belt winding member 72, winding shaft 721, winding roller 722, fixing part 723, scraper arc plate 724, fixed guide roller 73, endless belt traction member 74, endless belt body 75. DETAILED DESCRIPTION

[0024] In order to make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. In the drawings or descriptions, similar or identical parts are denoted by the same reference numerals, and in actual applications, the shape, thickness, or height of each component may be enlarged or reduced. The various embodiments listed in the present invention are merely illustrative of the present invention and are not intended to limit the scope of the present invention. Any obvious modifications or changes made to the present invention do not depart from the spirit and scope of the present invention.

[0025] In one embodiment, Figure 1-Figure 3 As shown, a geotechnical engineering exploration drilling sampling dust removal device includes a mounting suspension frame 1 connected to the drilling equipment and a dust removal cover component 2 covering the outer side of the sampling drill bit 3, the dust removal cover component 2 includes an upper cylinder cover 21 and a lower conical cover body 22, the upper cylinder cover 21 and the lower conical cover body 22 are connected as a whole and the sampling drill bit 3 passes through the upper cylinder cover 21 and the lower conical cover body 22, the upper part of the upper cylinder cover 21 is fixed on the mounting suspension frame 1, and the lower conical cover body 22 is arranged on the lower side of the upper cylinder cover 21; the inner side of the lower conical cover body 22 is provided with a conical filter body 23 and an air cavity 24 is formed between the conical filter body 23 and the inner wall of the lower conical cover body 22, and the side wall of the lower conical cover body 22 is provided with at least one The air outlet port 25; it also includes a scraper assembly and an airflow negative pressure assembly, the air inlet end of the airflow negative pressure assembly is connected to the air outlet port 25; under the action of the airflow negative pressure assembly sucking away the airflow, the dust particles generated by the sampling drill bit 3 drilling are attached to the inner wall of the conical filter body 23 under the guidance of the airflow; the scraper assembly includes a plurality of scraper members 26 attached to the inner wall of the conical filter body 23 and a driving member provided on the mounting suspension frame 1, a plurality of side openings 211 are provided on the side wall of the upper cylinder cover 21 and the outer wall of the upper cylinder cover 21 has a rotating ring sleeve 261 rotating thereon, the top of the scraper member 26 is connected to the rotating ring sleeve 261 through the side opening 211 by a connecting rod, and the driving member is used to drive the rotating ring sleeve 261 to rotate forward and reverse;

[0026] In this embodiment, the dust cover component 2 is covered on the outside of the sampling drill bit 3. When the sampling drill bit 3 is drilling and sampling, the rock and soil sample will be placed on the inside of the dust cover component 2 under the spiral conveyance of the sampling drill bit 3. The particles in the rock and soil sample can be splashed around and upward due to the drilling action and vibration of the sampling drill bit 3; the airflow negative pressure component absorbs the airflow inside the dust cover component 2, and the external airflow also enters the dust cover component 2 through the gap between the top of the dust cover component 2 and the sampling drill bit 3, so that the airflow can guide the particles to the inner wall of the conical filter body 23; thus, the particles in the rock and soil sample are prevented from being emitted to the outside, thereby preventing the construction environment from being affected; and the driving force is reduced. The moving part drives the rotating ring sleeve 261 to rotate forward and backward, and the rotating ring sleeve 261 drives multiple scraping parts 26 to rotate back and forth around the center line of the dust removal cover component 2 on the inner wall of the conical filter body 23. The scraping parts 26 can scrape the particles from the conical filter body 23, thereby avoiding clogging of the conical filter body 23. The scraping parts 26 guide the particles to the edge of the bottom of the lower conical cover body 22; the edge of the bottom of the lower conical cover body 22 is less affected by the airflow, so that the particles are not easily lifted up again; during the entire dust removal process, the particles in the rock and soil samples are prevented from being lifted up and dispersed, and the particles can be collected uniformly and tested as samples, which can improve the integrity of the samples.

[0027] In one embodiment, Figure 1 and Figure 2 As shown, the driving member includes a driving motor 4, a bar frame 41 and an outer gear ring 42 ringed on the rotating ring sleeve 261, the driving motor 4 is arranged on the mounting suspension frame 1 and the output end of the driving motor 4 has a driving disk 43, and the end face of the driving disk 43 has an eccentric driving column 44, the bar frame 41 is slidably arranged on the mounting suspension frame 1 and the end of the eccentric driving column 44 extends to the inner side of the bar frame 41, the side of the eccentric driving column 44 has a driving rack 45 and the driving rack 45 is engaged with the outer gear ring 42; in this embodiment, the driving motor 4 drives the driving disk 43 to rotate, the eccentric driving column 44 rotates with the driving disk 43 and drives the bar frame 41 to move back and forth horizontally on the mounting suspension frame 1, the driving rack 45 moves with the bar frame 41 and drives the rotating ring sleeve 261 to rotate forward and reverse by engaging with the outer gear ring 42; wherein, the driving member can also be a servo motor controlled by a program.

[0028] In one embodiment, Figure 1 and Figure 2As shown, the airflow negative pressure assembly includes a negative pressure chassis 6, a guide pipe 61 and an annular shell 5 arranged on the outer wall of the lower conical cover body 22, the annular shell 5 and the outer wall of the lower conical cover body 22 form a convergence ring cavity, and the convergence ring cavity is connected to the air cavity body 24 through the air outlet port 25; the negative pressure chassis 6 is arranged on the mounting suspension frame 1 and the air inlet end of the negative pressure chassis 6 is connected to the interior of the annular shell 5 through the guide pipe 61; in this embodiment, the negative pressure generated by the negative pressure chassis 6 can make the internal airflow of the dust removal cover component 2 converge to the interior of the annular shell 5 through the air outlet port 25, and then be guided to the interior of the negative pressure chassis 6 through the guide pipe 61.

[0029] In one embodiment, Figure 2 and Figure 3 As shown, the scraper 26 includes a guide channel 262, a top cover portion 263 and a scraper strip 264. The top cover portion 263 is connected to the rotating ring sleeve 261 through a connecting rod. The scraper strip 264 is provided on one side of the guide channel 262. One side of the scraper strip 264 is attached to the inner wall of the conical filter body 23. The scraper strip 264 can scrape the particles on the inner wall of the conical filter body 23 to the inner side of the guide channel 262. In this embodiment, when the scraper strip 264 reciprocates around the center of the conical filter body 23 along with the guide channel 262, the scraper strip 264 scrapes the particles on the inner wall of the conical filter body 23 to the inner side of the guide channel 262. Under the guidance of the guide channel 262, the particles slide to the bottom edge of the lower conical cover 22.

[0030] In one embodiment, Figure 2 As shown, a collection trough 27 centered on the center line of the upper cylinder cover 21 is provided at the bottom edge of the lower conical cover body 22. A feed inlet 271 is provided on the inner side wall of the collection trough 27. The lower end of the guide channel 262 extends through the guide channel 271 into the interior of the collection trough 27. The collection trough 27 is detachably connected to the inner wall of the conical filter body 23. In this embodiment, particles in the guide channel 262 slide down into the collection trough 27 for storage under the guiding effect of the guide channel 262. Since the inside of the collection trough 27 is in a non-ventilated state, the particles in the collection trough 27 are no longer raised, thereby facilitating the unified collection of the particles.

[0031] In one embodiment, Figure 1 As shown, a bracket body 11 is provided at each of the four corners of the mounting suspension frame 1. The bracket body 11 is a telescopic rod structure, and a connecting plate for connecting to the main body of the drilling equipment is provided on the top of the bracket body 11. In this embodiment, the telescopicity of the bracket body 11 can adjust the height position of the entire mounting suspension frame 1 and the dust cover component 2 to adapt to the position of the sampling drill bit 3.

[0032] In one embodiment, Figure 2 and Figure 4As shown, it also includes a material blocking cover assembly 7 located at the bottom of the dust removal cover component 2, the material blocking cover assembly 7 includes a fixing ring 71, an endless belt winding member 72 and an endless belt traction member 74, the fixing ring 71 is sleeved on the bottom of the dust removal cover component 2 and is fixedly connected thereto, the endless belt winding member 72 and the endless belt traction member 74 are both mounted on the fixing ring 71, the endless belt winding member 72 is rotatably connected to the fixing ring 71 and an endless belt body 75 is wound around the endless belt winding member 72; the endless belt traction member 74 is slidably matched with the outer side wall of the fixing ring 71 and the endless belt traction member 74 can rotate around the outer side of the fixing ring 71, and the fixing ring 71 also has There are multiple annularly distributed fixed guide rollers 73, and the end of the annular belt body 75 away from the annular belt winding member 72 is connected to the annular belt traction member 74; in this embodiment, when the annular belt traction member 74 rotates and moves around the center of the fixed ring 71, the annular belt traction member 74 can pull out the annular belt body 75 on the annular belt winding member 72, and the annular belt body 75 can be arranged on the outer edge of the fixed ring 71 and supported by multiple fixed guide rollers 73, and then the annular belt body 75 forms a cylindrical cover, which can cover the rock and soil brought out by the sampling drill bit 3 during drilling, avoid lateral splashing of rock and soil, and increase the placement space of rock and soil on the lower side of the dust removal cover component 2.

[0033] In one embodiment, Figure 3 and Figure 4 As shown, the endless belt winding member 72 includes a winding shaft 721, a winding roller 722 and a scraper arc plate 724. The winding shaft 721 is rotatably arranged on the side wall of the fixed ring 71 through a bracket, and the winding roller 722 is arranged on the winding shaft 721 and is used to wind the endless belt body 75; the bracket has a fixed portion 723 and a scraper arc plate 724 is fixed to the side of the fixed portion 723, and one side of the scraper arc plate 724 extends to the inner side surface of the endless belt body 75; in this embodiment, when the winding shaft 721 rotates and drives the winding roller 722 to rewind the endless belt body 75, the scraper arc plate 724 can scrape off the rock and soil adhered to the inner side of the endless belt body 75.

[0034] The above embodiment provides a geotechnical engineering exploration drilling sampling dust removal device, wherein the airflow negative pressure component sucks away the airflow inside the dust removal cover component 2, and the external airflow also enters the dust removal cover component 2 through the gap between the top of the dust removal cover component 2 and the sampling drill bit 3, so that the airflow can guide the particles to the inner wall of the conical filter body 23; thus, the particles in the geotechnical sample are prevented from being emitted to the outside, thereby preventing the construction environment from being affected; the driving member drives the rotating ring sleeve 261 to rotate forward and reverse, and the rotating ring sleeve 261 drives multiple scraping members 26 to move in the conical filter The inner wall of the mesh body 23 reciprocates around the center line of the dust removal cover component 2, and the scraper 26 can scrape the particles from the conical filter body 23, thereby avoiding clogging of the conical filter body 23. The scraper 26 guides the particles to the edge of the bottom of the lower conical cover body 22; the edge of the bottom of the lower conical cover body 22 is less affected by the airflow, so that the particles are not easily lifted up again; during the entire dust removal process, the particles in the rock and soil samples are prevented from being lifted up and dispersed, and the particles can be collected uniformly and tested as samples, which can improve the integrity of the samples.

[0035] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A geotechnical engineering survey drilling sampling dust removal device, comprising a mounting bracket connected to a drilling device and a dust removal cover member covering the outer side of a sampling drill bit, characterized in that: The dust removal cover component includes an upper cylindrical cover and a lower conical cover body; The upper cylinder cover and the lower conical cover are connected as a whole and the sampling drill bit passes through the upper cylinder cover and the lower conical cover. The upper part of the upper cylinder cover is fixed on the mounting suspension frame, and the lower conical cover is arranged on the lower side of the upper cylinder cover. The inner side of the lower conical cover body is provided with a conical filter body, and an air cavity is formed between the conical filter body and the inner wall of the lower conical cover body. The side wall of the lower conical cover body is provided with at least one air outlet port connected to the air cavity; It also includes a scraping component and an airflow negative pressure component; The air inlet end of the airflow negative pressure component is connected to the air outlet port; under the action of the airflow negative pressure component sucking away the airflow, the dust particles generated by the sampling drill bit drilling are attached to the inner wall of the conical filter body under the guidance of the airflow; The scraper assembly includes a plurality of scraper members attached to the inner wall of the conical filter body and a driving member provided on the mounting suspension frame; The side wall of the upper cylinder cover is provided with a plurality of side openings, and the outer wall of the upper cylinder cover is provided with a rotating ring sleeve rotating thereon. The top of the scraper is connected to the rotating ring sleeve via a connecting rod passing through the side openings, and the driving member is used to drive the rotating ring sleeve to rotate forward and reverse. The scraper comprises a material guide channel, a top cover and a scraper strip; The top cover is connected to the rotating ring through a connecting rod, and the scraping strip is provided on one side of the material guide channel; One side of the scraper strip is attached to the inner wall of the conical filter body, and the scraper strip can scrape the particles on the inner wall of the conical filter body to the inner side of the guide channel; The bottom edge of the lower conical cover is provided with a collecting trough centered on the center line of the upper cylinder cover; The inner side wall of the aggregate trough is provided with a material introduction port, and the lower end of the material guide channel extends into the interior of the aggregate trough through the material introduction port. The aggregate trough is detachably connected to the inner wall of the conical filter body.

2. The geotechnical engineering investigation drilling sampling dust removal device according to claim 1, characterized in that: The driving member includes a driving motor, a bar frame and an outer gear ring sleeved on a rotating ring sleeve; The drive motor is mounted on the mounting bracket and the output end of the drive motor has a drive disc, and the end surface of the drive disc has an eccentric drive column; The strip frame is slidably mounted on the mounting suspension frame and the end of the eccentric driving column extends to the inside of the strip frame; A driving rack is provided on the side of the eccentric driving column, and the driving rack is meshed with the outer gear ring.

3. The geotechnical engineering investigation drilling sampling dust removal device according to claim 1, characterized in that: The airflow negative pressure assembly includes a negative pressure chassis, a flow guide pipe, and an annular shell provided on the outer side wall of the lower conical cover; The annular housing and the outer wall of the lower conical cover form a slip ring cavity, which is connected to the gas cavity through the gas outlet port; The negative pressure case is arranged on the mounting suspension frame, and the air inlet end of the negative pressure case is communicated with the interior of the annular shell through a flow guide pipe.

4. The geotechnical engineering investigation drilling sampling dust removal device according to claim 1, characterized in that: Also included is a material blocking cover assembly located at the bottom of the dust removal cover component; The material blocking cover assembly includes a fixing ring, an endless belt winding piece and an endless belt pulling piece; The fixed ring is sleeved on the bottom of the dust cover component and fixedly connected thereto, the endless belt winding member and the endless belt pulling member are both installed on the fixed ring, the endless belt winding member and the fixed ring are rotatably connected, and an endless belt body is wound on the endless belt winding member; The endless belt traction member is slidably matched with the outer side wall of the fixed ring and can rotate around the outer side of the fixed ring. The fixed ring is also provided with a plurality of annularly distributed fixed guide rollers. The end of the endless belt body away from the endless belt winding member is connected to the endless belt traction member.

5. The geotechnical engineering investigation drilling sampling dust removal device according to claim 4, characterized in that: The endless belt winding member comprises a winding shaft, a winding roller and a scraping arc plate; The winding shaft is rotatably mounted on the side wall of the fixed ring through a bracket, and the winding roller is mounted on the winding shaft and is used to wind the endless belt body; The bracket is provided with a fixing portion, and a scraping arc plate is fixed on the side of the fixing portion. One side of the scraping arc plate extends to the inner side surface of the endless belt body.

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