Anti-dust device for anchor rod drilling construction

Abstract

The invention provides an anchor rod drilling construction dustproof device which comprises a dust removal structure and a slag reduction structure, the dust removal structure is a water filtering bin, the slag reduction structure is a primary filtering bin, and the dust removal structure is communicated with the slag reduction structure; a first connector and a second connector are arranged on a shell of the slag reducing structure, the first connector and the second connector are oppositely arranged, the vertical position of the first connector and the vertical position of the second connector can be adjusted according to actual needs, and the first connector and the second connector are used for containing a drill rod. The outer side of the second joint is fixedly connected with a metal hose; the residue reducing structure is used for filtering residue soil, and the dust removing structure is used for filtering dust in air. The device is simple in structure and convenient to carry, disassemble and assemble, the dust removal material is water, the device is suitable for being used in the severe working environment of an engineering site, and the good dust removal effect is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of environmental protection of drilling holes by a geotechnical engineering drill, and in particular to a dust prevention device for anchor rod drilling construction. Background Art

[0002] Geotechnical engineering projects such as excavation slope and urban foundation pit support often use anchor (anchor cable) support. During the construction of anchor (anchor cable) drilling rigs, when high pressure is used to remove soil (rock) debris in the borehole, a large amount of dust will be generated due to the lack of dust prevention devices. The dust will float above the site, greatly endangering the health of construction workers, and seriously affecting the living environment around the site, resulting in adverse social impacts. Summary of the invention

[0003] The purpose of the present invention is to provide a dust prevention device for anchor drilling construction, so as to at least solve the problem of lack of dust suppression device in the prior art of drilling and slag removal of geotechnical engineering drilling rigs.

[0004] The present invention provides a dust prevention device for anchor drilling construction, the device comprising: a dust removal structure and a slag reduction structure, the dust removal structure is a water filter bin, the slag reduction structure is a primary filter bin, and the slag reduction structure is in communication with the dust removal structure;

[0005] The shell of the slag reduction structure is provided with a first joint and a second joint, the first joint and the second joint are respectively arranged on two opposite sides of the shell, and the first joint and the second joint are used to place the drill rod;

[0006] The outer side of the second joint is fixedly connected to a metal hose;

[0007] The slag reduction structure is used for filtering slag, and the dust removal structure is used for filtering dust.

[0008] Furthermore, a steel baffle is provided in the shell of the slag reduction structure. The steel baffle is tilted and provided with a through hole. The through hole is used to place the drill rod. The steel baffle is used to block the slag entering from the second joint and make it fall into the lower part of the shell.

[0009] Furthermore, sliding blocks are provided on both sides of the steel baffle, and grooves are provided on the inner wall of the shell, and the sliding blocks are installed in the grooves.

[0010] Furthermore, a slag collecting trough is provided in the slag reducing structure, and the slag collecting trough is located at the lower part of the steel baffle.

[0011] Furthermore, the metal hose is connected to a protective steel pipe, and a filter net is provided between the dust removal structure and the slag reduction structure.

[0012] Furthermore, the top of the dust removal structure is externally connected to a vacuum pump, and the interior of the dust removal structure is a water reservoir.

[0013] Furthermore, a communicating vessel is provided in the dust removal structure, the lower end of the communicating vessel is a trumpet-shaped opening, the trumpet-shaped opening faces the slag reduction structure, the upper end of the communicating vessel is an air dispersion structure, the air dispersion structure is umbrella-shaped, and an air dispersion port is provided at the end of the air dispersion structure, and the air dispersion port is located below the water surface.

[0014] Furthermore, a first cover plate and a second cover plate are installed on the shell, and the first cover plate and the second cover plate are adjustably installed with the slag reduction structure;

[0015] The first joint is located on the first cover plate, and the second joint is located on the second cover plate;

[0016] The first joint is in the shape of a circular box, connected to an outer cover, the interior of the first joint is a circular groove, the center of the circular groove is a circular through hole, and a rubber ring is installed in the circular groove;

[0017] The inner ring diameter of the rubber ring is slightly larger than the diameter of the drill rod, and the outer diameter of the rubber ring is slightly smaller than the diameter of the cavity;

[0018] The second joint is a flange structure, and the metal hose is connected to the guard steel pipe.

[0019] Furthermore, an adjustable fixing device is provided at the bottom of the slag reduction structure, and the adjustable fixing device is a detachable bracket, and an anchor bolt is provided at the lower end of the detachable bracket.

[0020] Furthermore, the dust removal structure and the slag reduction structure are fixedly connected up and down; or the dust removal structure and the slag reduction structure are separately arranged and connected through a pipeline.

[0021] The present invention has a simple structure. On the one hand, the joints of the equipment, anchor rods, etc. can be fully sealed to prevent the escape of some dust, and the dust removal process is environmentally friendly. On the other hand, an adjustable interface is invented at the connection between the drill rod and the equipment, which is suitable for anchor rod construction at various angles and has strong applicability. In addition, the water storage tank at the top of the equipment forms a negative pressure zone by an external vacuum device. The pressure in the negative pressure zone can be adjusted according to the drilling speed of the anchor rod. The pressure difference formed by the negative pressure zone is used to suck the dusty air. The dusty air is subjected to a two-stage dust removal method of primary filtration and water filtration: the primary filtration uses a steel baffle and a filter screen to intercept large, medium and small dust particles sprayed out of the borehole, and then driven by the air sucked in the negative pressure zone, the small and micro dust particles are filtered out through the water pool. The dust removal equipment is firm and reliable, easy to carry, disassemble and install, and the dust removal material is water, which is suitable for use in harsh working environments on engineering sites; the dust removal method is targeted at large, medium, small and micro dust particles formed by drilling slag. By utilizing the easy solubility of small dust particles, the small amount of water used and the reusability, the dust particles in drilling cuttings and dust can be effectively removed, achieving a good dust reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of a dust prevention device for anchor drilling construction according to an embodiment of the present invention;

[0023] Figure 2 , Figure 3 This is a schematic diagram of the steel baffle structure of an embodiment of the present invention;

[0024] Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 This is a schematic diagram of the structure of an adjustable joint according to an embodiment of the present invention;

[0025] 1. Slag reduction structure; 11. Shell; 111. Rectangular groove; 112. Rectangular through groove; 113. Square through hole; 12. Steel baffle; 121. Circular through hole; 122. Square slider; 13. Filter screen; 14. Slag collecting tank; 15. Socket-type baffle; 2. Dust removal structure; 21. Shell; 221. Water outlet; 222. Water inlet; 23. Connecting vessel; 231. Air diffusion hole; 24. Water level line; 25. Pipeline; 31. Second joint; 3 11. Second cover plate; 312. Second fixing bolt; 313. Second circular through hole; 314. Flange structure; 32. First joint; 321. First cover plate; 322. First fixing bolt; 323. First circular through hole; 324. Rubber ring; 325. Cavity; 326. Internally threaded outer cover; 4. Metal hose; 5. Mouth-guarding steel pipe; 6. Adjustable fixing device; 61. Removable bracket; 62. Anchor bolt; 7. Drill rod; 8. Excavation surface. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 creative work should fall within the scope of protection of the present invention.

[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0028] The dust prevention device for anchor drilling construction disclosed in the embodiment of the present invention is as follows: Figure 1 As shown, the device comprises: a dust removal structure 2 and a slag reduction structure 1, wherein the dust removal structure 2 is a water filter bin, the slag reduction structure 1 is a primary filter bin, and the slag reduction structure 1 is in communication with the interior of the dust removal structure 2;

[0029] The shell 11 of the slag reduction structure 1 is provided with a first joint 32 and a second joint 31, and the first joint 32 and the second joint 31 are respectively arranged on both sides of the slag reduction structure 1; a drilling rig is arranged on one side of the first joint 32, and one side of the second joint 31 is opposite to the anchor hole of the excavation surface. The position height of the first joint 32 and the second joint 31 can be adjusted according to actual needs, and the first joint 32 and the second joint 31 are used to place the drill rod 7;

[0030] The slag reduction structure 1 is used for filtering slag, and the dust removal structure 2 is used for filtering dust in the air.

[0031] Specifically, Figure 4 As shown, the housing 11 is provided with an adjustable joint structure at the positions corresponding to the first joint 32 and the second joint 31. The adjustable joint structure is a square through hole 113 opened on the housing 11. Rectangular through slots 112 are respectively provided on both sides of the square through hole 113. Bolts are installed on the housing 11 through the rectangular through slots 112. Due to the use of the rectangular through slots 112, the position of the cover plate can be adjusted up and down;

[0032] like Figure 5 , Figure 6 As shown, the cover plate includes: a first cover plate 321 and a second cover plate 311, the first joint 32 is located on the first cover plate 321, and the second joint 31 is located on the second cover plate 311; the first cover plate 321 is installed on the side of the housing 11 opposite to the drilling rig through a first fixing bolt 322, and the second cover plate 311 is installed on the side of the housing 11 opposite to the excavation surface through a second fixing bolt 312, and the first joint 32 and the second joint 31 are adjustable by adjusting the position of the cover plate;

[0033] like Figure 7 As shown, the second joint 31 is a flange structure 314, the center of the flange structure 314 is a second circular through hole 313, the side of the flange structure 314 facing outward is connected to a metal hose 4, and the other end of the metal hose 4 is connected to a protective steel pipe 5;

[0034] The top of the dust removal structure 2 is connected to an external vacuum pump through a pipe 25, and the upper and lower ends of the dust removal structure 2 are respectively provided with a water inlet 222 and a water outlet 221. The water inlet 222 is located at the water level line 24, and at least two water inlets 222 are provided. When in use, water is introduced into the water inlet 222 on one side until the water inlet 222 on the other side overflows, so that too much water can be prevented from entering the slag reduction structure 1.

[0035] The dust removal structure 2 and the slag reduction structure 1 may be connected directly or indirectly, for example, by clamping or by connecting through a pipeline.

[0036] When in use, the drill rod 7 of the drilling rig is passed through the first joint 32, the second joint 31, and the metal hose 4 and then contacts the slope working area. The mouth-protecting steel pipe 5 is inserted into the anchor rod (anchor cable) hole for a certain length, which is used for a closed connection between the device and the borehole, guiding the dust-containing gas in the borehole into the device, and preventing local collapse of the hole at the hole mouth.

[0037] During the construction process, slag and dust enter the slag reduction structure 1 through the metal hose 4. After being blocked by the steel baffle and the filter net, the granular slag falls into the slag reduction structure 1. The vacuum pump externally connected to the dust removal structure 2 forms a negative pressure zone in the water filter bin, and sucks the air containing dust into the dust removal structure 2. The gas containing small and micro particles of dust is filtered through the water in the upper water tank, thereby achieving the effect of reducing and removing small and micro particles of dust.

[0038] On the one hand, the joints of the equipment, anchor rods, etc. can be fully sealed to prevent the escape of some dust, and the dust removal process is environmentally friendly; on the other hand, the adjustable interface at the connection between the drill rod 7 and the equipment is suitable for anchor rod construction at various angles and has strong applicability. In addition, the water storage tank at the top of the equipment forms a negative pressure zone by an external vacuum device. The pressure in the negative pressure zone can be adjusted according to the drilling speed of the anchor rod. The pressure difference formed by the negative pressure zone is used to suck the dusty air. The dusty air is removed by a two-stage dust removal method of primary filtration and water filtration: the primary filtration uses a steel baffle and a filter to intercept large, medium and small dust particles sprayed out of the borehole, and then driven by the air sucked in the negative pressure zone, the small dust particles are filtered out through the water pool. The dust removal material is water, which is suitable for use in harsh working environments on engineering sites. The dust removal method is targeted at large, medium, small and micro dust particles formed by drilling cuttings. It utilizes the easy solubility of small dust particles, the small amount of water used and its reusability to effectively remove dust particles in drilling cuttings and dust, achieving a good dust reduction effect. The dust removal equipment has a simple structure, is firm and reliable, and is easy to carry, disassemble and install.

[0039] Optional, such as Figure 8 As shown, the first joint 32 is in the shape of a circular box, with an internally threaded outer cover 326 connected to the outside. The inside of the first joint 32 is a circular groove, the center of the circular groove is a first circular through hole 323, and a rubber ring 324 is installed in the circular groove.

[0040] The inner ring diameter of the rubber ring 324 is slightly larger than the diameter of the drill rod 7 , and the outer diameter of the rubber ring 324 is slightly smaller than the diameter of the cavity 325 .

[0041] The rubber ring 324 described in the embodiment of the present invention is annular. The inner ring diameter of the rubber ring 324 is slightly larger than the diameter of the drill rod 77, and the outer diameter of the rubber ring 324 is slightly smaller than the diameter of the cavity 325, so that the rubber ring 324 rotates with the drill rod 7, which not only facilitates the operation of the drill rod, but also plays a role of sealing and fine-tuning.

[0042] Optional, such as Figure 1As shown, a steel baffle 12 is provided in the slag reduction structure 1. The steel baffle 12 is tilted, and the lower part of the steel baffle 12 is tilted away from the second joint 31. The steel baffle 12 is provided with a through hole, and the through hole is used to place the drill rod 7. The steel baffle 12 is used to block dust and slag entering from the second joint 31.

[0043] Specifically, Figure 2 As shown, sliders are provided on both sides of the steel baffle 12, and grooves are provided on the side walls of the shell 11, and the sliders are installed in the grooves.

[0044] like Figure 3 As shown, the inner wall of the shell 11 is provided with a rectangular groove 111, and the rectangular groove 111 is multiple and arranged in parallel. The square slider 122 is slidably installed in the groove. The square slider 122 slides into the horizontal groove and falls into the small groove at the end. The small groove prevents the slider from shifting during the slag removal process and plays a limiting role. When disassembling, it can slide out through the openings at both ends of the rectangular groove 111.

[0045] When in use, the square slider 122 is installed in the rectangular groove 111 of a suitable height as required to control the position height of the steel baffle 12, match the first joint 32 and the second joint 31, and ensure that the drill rod 7 passes through the circular through hole 121 on the steel baffle 12. When the gas ejected from the anchor hole carries the hole slag and hits the steel baffle 12, the square slider 122 can better prevent the steel baffle 12 from rotating, and play a good fixing role.

[0046] In the embodiment of the present invention, the steel baffle 12 is provided to block the large and medium-sized drill cuttings entering the shell 11 and perform primary slag removal.

[0047] Optionally, a filter screen 13 is installed at the connection between the dust removal structure 2 and the slag reduction structure 1 .

[0048] Specifically, the shell 11 can be selected into a square, circular or other geometric shape. The upper inner wall of the shell 11 is connected to a steel dense mesh filter 13 by a buckle. The filter 13 filters larger particles in the hole residue. After use, it can be removed to clean the hole mesh to prevent soil particles from clogging the hole mesh.

[0049] The embodiment of the present invention sets a steel baffle 12 and a filter screen 13, so that the present invention utilizes the physical method of the baffle, the filter screen and water flow to form a three-stage step-by-step removal of drilling cuttings and dust (the particle sizes of drilling cuttings and dust vary greatly, are easily soluble in water, and do not contain inorganic pollutants such as oil, chemicals, etc.). The dust removal process is environmentally friendly and has good effects.

[0050] Optionally, the slag reducing structure 1 is provided with a slag collecting trough 14 , and the slag collecting trough 14 is located at the lower part of the steel baffle 12 .

[0051] Specifically, a slag cleaning port can be provided at a position opposite to the slag collecting tank 11, and the slag collecting tank 14 is a detachable basin-type slag collecting tank 14. In working conditions with more hole slag, the slag cleaning port can be used to timely remove the soil blocks and larger particles of the hole slag. A socket-type baffle 15 can be installed at the slag cleaning port.

[0052] The embodiment of the present invention facilitates slag collection and removal and has a wider scope of application.

[0053] Optionally, the dust removal structure 2 is provided with a communicating vessel 23, the lower end of the communicating vessel 23 is a trumpet-shaped opening, the upper end of the communicating vessel 23 is provided with an umbrella-shaped air dispersion structure, the end of the air dispersion structure is provided with an air dispersion port 231, and a water storage area is provided between the outer shell 21 of the dust removal structure 2 and the communicating vessel 23, and the air dispersion port 231 is located below the water surface.

[0054] Specifically, the interior of the communicating vessel 23 is a cavity.

[0055] The bell mouth at the bottom of the communicating vessel in the embodiment of the present invention utilizes inertial impact to reduce dust, and is also beneficial to the range of the exhaust system to suck the dust-containing gas in the space of the slag reduction structure 1. The air diffusion holes of the air diffusion structure increase the contact area between the dust-containing gas and water, thereby improving the dust reduction efficiency.

[0056] Optionally, an adjustable fixing device 6 is provided at the bottom of the slag reducing structure 1 . The adjustable fixing device 6 is a detachable bracket 61 . An anchor bolt 62 is provided on the detachable bracket 61 .

[0057] Specifically, connecting components are welded at the middle and lower part of the shell 11 , which are respectively connected and fixed to the detachable tripod bracket 61 and the anchor bolt 62 of the adjustable fixing device 6 .

[0058] The embodiments of the present invention ensure the stability of the device and prevent it from tipping over during the construction process.

[0059] The present invention has the following advantages by adopting the above structure:

[0060] 1. The device has good sealing performance. The whole process from the discharge of slag from the anchor hole to the exhaust after three-stage filtration is sealed. The anchor and the device are connected through an adjustable sealing joint to achieve all-round sealing, which can effectively prevent the escape of some dust and avoid the pollution of the surrounding atmospheric environment caused by slag discharge and dust from drilling.

[0061] 2. Three-stage slag removal and dust prevention based on physical principles and slag material characteristics. Considering that anchor drilling slag is mainly soil or rock dust particles of different particle sizes, the particle sizes of slag vary greatly, it is easily soluble in water, and does not contain inorganic pollutants such as oil, chemicals, etc., the present invention removes large particles of slag through a baffle, and then removes small and medium particles of dust in the gas through a dense steel wire mesh. Finally, under the action of negative pressure suction, the dust-containing gas is washed and filtered through a water body to remove small and micro particles of dust, and then the clean gas is discharged through a vacuum pump.

[0062] 3. The contact surface between the dust-containing gas and the water body is large, and the dust removal degree is high; the water body can be used sustainably, the water consumption is small, and water resources are saved. Finally, the muddy water in the reservoir can be discharged or recycled after sedimentation. The present invention stores water in the reservoir, and the dust-containing gas is dispersed into fine airflows through the diffuser and diffuser holes under negative pressure suction, which increases the contact surface between the gas and the water body and effectively improves the dust removal degree; the dust-containing gas continuously passes through the water body, and the water body is stored in the water tank, without the need for frequent or continuous water replenishment, with small water consumption and water conservation; after the drilling is completed or the mud concentration is high, the sediment is collected through the water outlet 221 and then discharged or recycled.

[0063] 4. An adjustable interface at the connection between the drill rod 7 and the equipment is invented, which is suitable for anchor construction at various angles. The position adjustment of the two adjustable anti-leakage joints meets the requirements of the drilling angle parameters of the drilling rig equipment, does not affect the feasibility of the equipment technical parameters, and at the same time improves the overall sealing of the dust reduction device and improves the parameter accuracy of the drilling. A protective steel pipe and a metal hose are set between the device and the borehole to ensure that the high-pressure gas carries the hole slag into the slag reduction structure. The interface position can be adjusted at any time according to the equipment position and the anchor angle at the construction site, and it has strong applicability.

[0064] 5. The detachability of the device facilitates its transportation and replacement of parts when a fault occurs. At the same time, after a period of use, the various components of the device can be cleaned to increase the service life of the device, which is convenient for construction operations in complex on-site environments.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that after reading the specification of this application, the technicians can still modify or replace the specific implementation mode of the present invention with equivalents, but these modifications or changes do not deviate from the scope of protection of the pending claims of the present application.

Claims

1. A dust prevention device for anchor drilling construction, characterized in that: The device comprises: a dust removal structure and a slag reduction structure, wherein the dust removal structure is a water filter bin, the slag reduction structure is a primary filter bin, and the slag reduction structure is in communication with the interior of the dust removal structure; The shell of the slag reduction structure is provided with a first joint and a second joint, the first joint and the second joint are respectively arranged on two opposite sides of the shell, and the first joint and the second joint are used to place the drill rod; The outer side of the second joint is fixedly connected to a metal hose; The slag reduction structure is used for filtering slag, and the dust removal structure is used for filtering dust.

2. According to claim 1, a dust prevention device for anchor drilling construction is characterized in that: A steel baffle is provided in the shell of the slag reduction structure. The steel baffle is tilted and has a through hole for placing a drill rod. The steel baffle is used to block the slag entering from the second joint and make it fall into the lower part of the shell.

3. According to claim 2, a dust prevention device for anchor drilling construction is characterized in that: Slide blocks are arranged on both sides of the steel baffle, and grooves are arranged on the inner wall of the shell, and the slide blocks are installed in the grooves.

4. According to claim 2, a dust prevention device for anchor drilling construction is characterized in that: A slag collecting trough is provided in the slag lowering structure, and the slag collecting trough is located at the lower part of the steel baffle.

5. The dust-proof device for anchor drilling construction according to claim 1, characterized in that: The metal hose is connected to a protective steel pipe, and a filter screen is arranged between the dust removal structure and the slag reduction structure.

6. The dust-proof device for anchor drilling construction according to claim 1, characterized in that: The top of the dust removal structure is externally connected to a vacuum pump, and the interior of the dust removal structure is a water reservoir.

7. The dust-proof device for anchor drilling construction according to claim 6, characterized in that: A communicating vessel is provided in the dust removal structure, the lower end of the communicating vessel is a trumpet-shaped opening, the trumpet-shaped opening faces the slag reduction structure, the upper end of the communicating vessel is an air dispersion structure, the air dispersion structure is umbrella-shaped, a air dispersion port is provided at the end of the air dispersion structure, and the air dispersion port is located below the water surface.

8. The dust-proof device for anchor drilling construction according to claim 1, characterized in that: The shell is provided with a first cover plate and a second cover plate, and the first cover plate and the second cover plate are both adjustably mounted with the slag reduction structure; The first joint is located on the first cover plate, and the second joint is located on the second cover plate; The first joint is in the shape of a circular box, connected to an outer cover, the interior of the first joint is a circular groove, the center of the circular groove is a circular through hole, and a rubber ring is installed in the circular groove; The inner ring diameter of the rubber ring is slightly larger than the diameter of the drill rod, and the outer diameter of the rubber ring is slightly smaller than the diameter of the cavity; The second joint is a flange structure, and the metal hose is connected to the guard steel pipe.

9. The dust prevention device for anchor drilling construction according to any one of claims 1 to 8, characterized in that: An adjustable fixing device is provided at the bottom of the slag reduction structure. The adjustable fixing device is a detachable bracket. An anchor bolt is provided at the lower end of the detachable bracket.

10. The dust prevention device for anchor drilling construction according to claim 1 or 7, characterized in that: The dust removal structure and the slag reduction structure are fixedly connected up and down; or the dust removal structure and the slag reduction structure are separately arranged and connected through a pipeline.

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