On-site returned slurry collecting device for high-pressure jet grouting pile
Through the combination of mud fender, mud conveyor and screening components, the problem of difficult slurry collection during high-pressure rotary spray pile construction is solved, and the separation and recycling of mud and sand is achieved to ensure cleanliness on the construction site.
Patent Information
- Application Number
- CN202422444257.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-10-10
AI Technical Summary
During the construction of high-pressure rotary spray piles, it is difficult to collect the slurry, resulting in pollution and inconvenience on the construction site.
A mud cover, mud conveyor device and screening assembly are used. The mud cover is installed at the drilling hole. The drill rod passes through the mud cover and is inserted into the drilling hole to form a slurry storage space. The mud conveyor is connected to the screening assembly. The screening unit separates the sand and gravel in the slurry and stores it in the sand storage area. The mud and water are stored in the slurry storage area, and the mud and sand separation is achieved through a screw conveyor and a sand-dripping roller.
The mud and sand separation and recycling in the slurry return is achieved, avoiding construction site pollution and facilitating construction.
Smart Images
Figure CN223144228U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of jet grouting pile construction, and particularly to a device for collecting on-site backflow slurry of high-pressure jet grouting piles. Background Art
[0002] A high-pressure jet grouting pile is a composite foundation that first uses a drill rig to drill a hole, then inserts a grouting pipe with a nozzle to a predetermined position in the soil layer, uses a high-pressure device to make the slurry into a high-pressure jet flow above 20 Mpa and sprays it out from the nozzle to impact and damage the soil, and finally forms a composite foundation together with the soil between the piles after the slurry solidifies.
[0003] Due to the large hydraulic pressure in the drill hole when spraying the slurry, a part of the soil and sand will gush out of the drill hole together with the slurry, forming a backflow slurry phenomenon. Since it is difficult to collect this backflow slurry and it will pollute the construction site, it is not convenient for workers to carry out construction.
[0004] In view of this, a device for collecting on-site backflow slurry of high-pressure jet grouting piles is needed. Utility Model Content
[0005] In order to solve the problem that the backflow slurry during grouting of high-pressure jet grouting piles is difficult to collect and not convenient for workers to carry out construction, this application provides a device for collecting on-site backflow slurry of high-pressure jet grouting piles.
[0006] This application provides a device for collecting on-site backflow slurry of high-pressure jet grouting piles, adopting the following technical scheme: including a mud guard sleeve, a mud conveying device, and a screening assembly. The mud guard sleeve is arranged at the orifice of the drill hole, the drill rod passes through the mud guard sleeve and inserts into the drill hole, and a slurry storage space is formed between the mud guard sleeve and the rod body of the drill rod.
[0007] The mud inlet end of the mud conveying device is connected to the slurry storage space. The screening assembly includes a screening unit, a sand storage area, and a slurry storage area. The mud outlet end of the mud conveying device is connected to the screening assembly and can move the backflow slurry in the slurry storage space through the screening unit to the slurry storage area. The screening unit can separate the sand and gravel in the backflow slurry and move the sand and gravel to the sand storage area.
[0008] By adopting the above technical scheme, the backflow slurry overflowing from the drill hole during grouting of the high-pressure jet grouting pile will first be restricted and stored in the slurry storage space formed between the mud guard sleeve and the rod body of the drill rod, and then be moved to the slurry storage area by the mud conveying device. During the movement of this backflow slurry, the screening unit will separate the sand and gravel in the backflow slurry and store them separately in the sand storage area, while only the muddy water with sand and gravel removed is stored in the slurry storage area, so as to realize the separation of the mud and sand in the backflow slurry, facilitate the recycling or reuse of these mud and sand, and ensure that the backflow slurry overflowing from the drill hole will not spill to the surrounding of the drill hole and pollute the construction site, so as to facilitate the workers to carry out construction.
[0009] Specifically, a flange ring is provided on the outer wall of the mud guard sleeve, and a mounting opening is opened on the flange ring. The expansion bolt can pass through the mounting opening to connect with the ground and make a side port of the mud guard sleeve abut against the ground.
[0010] By adopting the above technical solution, the mud guard sleeve can be tightly connected to the ground through the cooperation of the expansion bolts and the flange ring, so that muddy water is not easy to leak out from the gap between the mud guard sleeve and the ground.
[0011] Specifically, the mud conveying device is a screw conveyor.
[0012] By adopting the above technical solution, the screw conveyor can transport the mud and sand in the mud guard sleeve to the screening assembly.
[0013] Specifically, the screening unit includes an installation box, two sand-squeezing rollers, two driving motors and two sand-containing boxes. The two sand-squeezing rollers are arranged in parallel and opposite to each other in the installation box. A mud-passing gap is formed between the roller surfaces of the two sand-squeezing rollers. The mud-passing gap is located below the mud outlet end of the mud conveying device. The sand and gravel in the return slurry will stay above the mud-passing gap.
[0014] The sand containing boxes correspond to the sand-moving rollers one by one, each of the sand containing boxes is arranged between the corresponding sand-moving roller and the inner wall of the installation box, and the box opening of each of the sand containing boxes abuts against the roller surface of the corresponding sand-moving roller on the side away from the mud-passing gap, the inside of the two sand containing boxes forms the sand storage area, and the two sand containing boxes and the two sand-moving rollers and the bottom wall of the installation box form the slurry storage area;
[0015] The driving motors correspond to the sand-moving rollers one by one, and each of the driving motors is drivingly connected to the corresponding sand-moving roller and can drive the sand-moving roller to rotate so as to drop the sand and gravel belt staying above the mud-passing gap into the sand box.
[0016] By adopting the above technical scheme, on the one hand, since the return slurry will carry some larger sand and gravel in addition to mud and water, workers can set the width of the mud gap to be smaller than the size of these sand and gravel. When these sand and gravel fall from the mud outlet end of the mud conveying device to the mud gap, the size of these sand and gravel will first stay above the mud gap, and then fall into the sand boxes on both sides of the mud gap as the sand roller rotates, and the mud and water in the return slurry will directly pass through the mud gap into the slurry storage area, thereby achieving effective separation of sand and gravel from mud and water; on the other hand, since the mud gap is composed of two continuously rotating sand rollers, the mud and sand in the return slurry will not clog the mud gap like clogging the mesh on the filter screen, thereby ensuring that the on-site return slurry collection device for high-pressure rotary jet piles always has good mud and sand separation efficiency when working.
[0017] Further, friction - increasing grooves are formed on the sand - dialing roller.
[0018] By adopting the above - mentioned technical solution, the friction - increasing grooves can increase the friction force between the sand and the sand - dialing roller, so as to facilitate the sand - dialing roller to bring the sand staying above the mud - passing gap into the sand - holding box.
[0019] Further, brushes are provided at the box openings of the sand - holding box close to the sand - dialing roller, and the brushes can be in contact with the roller surface of the sand - dialing roller.
[0020] By adopting the above - mentioned technical solution, the brushes can clean the sand adhered to the roller surface and in the friction - increasing grooves of the sand - dialing roller, so that the sand is not easily introduced into the slurry storage area through the gap between the roller surface of the sand - dialing roller and the box opening of the sand - holding box as the sand - dialing roller rotates.
[0021] Further, a screen is provided at the bottom of the sand - holding box, and the muddy water entering the sand - holding box can pass through the screen and enter the slurry storage area.
[0022] By adopting the above - mentioned technical solution, the muddy water entering the sand - holding box can pass through the screen and enter the slurry storage area, so that the space in the sand - holding box is not easily occupied by the muddy water.
[0023] Further, discharge holes are formed at the joints between each sand - holding box and the inner wall of the installation box. Each sand - storage area communicates with the outside through the corresponding discharge hole, and a flip cover is hinged in each discharge hole.
[0024] By adopting the above - mentioned technical solution, workers can pour out the sand in the sand - holding box to the outside through the discharge hole by opening the flip cover.
[0025] In summary, the present application includes the following beneficial technical effects:
[0026] It includes a mud guard sleeve, a mud conveying device and a screening assembly. The mud guard sleeve is arranged at the orifice of the drilling hole, and the drill pipe passes through the mud guard sleeve and inserts into the drilling hole. A slurry storage space is formed between the mud guard sleeve and the body of the drill pipe. The mud inlet end of the mud conveying device is connected to the slurry storage space. The screening assembly includes a screening unit, a sand storage area and a slurry storage area. The mud outlet end of the mud conveying device is connected to the screening assembly and can move the return slurry in the slurry storage space to the slurry storage area through the screening unit. The screening unit can separate the sand and gravel in the return slurry and move the sand and gravel to the sand storage area. When the high-pressure jet grouting pile is grouting, the return slurry overflowing from the drilling hole will first be restricted and stored in the slurry storage space formed between the mud guard sleeve and the body of the drill pipe, and then be moved to the slurry storage area by the mud conveying device. During the movement of the return slurry, the screening unit will separate the sand and gravel in the return slurry and store them separately in the sand storage area, while only the muddy water with sand and gravel removed is stored in the slurry storage area, so as to realize the separation of the mud and sand in the return slurry, facilitate the recycling or reuse of the mud and sand, and ensure that the return slurry overflowing from the drilling hole will not spill to the surrounding of the drilling hole and pollute the construction site, so as to facilitate the construction of workers. Brief Description of the Drawings
[0027] Figure 1 is a perspective view of a device for collecting on-site return slurry of a high-pressure jet grouting pile according to the present application;
[0028] Figure 2 is a schematic cross-sectional view taken along the central axis of the mud guard sleeve of a device for collecting on-site return slurry of a high-pressure jet grouting pile according to the present application;
[0029] Figure 3 is Figure 2 a schematic enlarged view of area A in
[0030] Figure 4 is taken along Figure 2 a schematic cross-sectional view taken along the B-B direction in
[0031] Reference Numerals: 1, mud guard sleeve; 11, flange ring; 2, mud conveying device; 21, mud inlet end; 22, mud outlet end; 3, screening assembly; 31, installation box; 311, slurry outlet; 32, sand shifting roller; 321, mud passing gap; 322, friction increasing groove; 33, driving motor; 34, sand storage box; 341, brush; 342, screen; 343, flip cover; 344, door buckle; 4, ground. Detailed Description of the Embodiments
[0032] Figure 1 is a perspective view of a device for collecting on-site return slurry of a high-pressure jet grouting pile according to the present application, Figure 2 is a schematic cross-sectional view taken along the central axis of the mud guard sleeve of a device for collecting on-site return slurry of a high-pressure jet grouting pile according to the present application. Refer to Figure 1 and Figure 2The present application provides a high-pressure rotary jet pile on-site return slurry collection device, which includes: a mud guard sleeve 1, a mud conveying device 2 and a screening component 3. The mud guard sleeve 1 is arranged at the orifice of the drill hole, and the drill rod passes through the mud guard sleeve 1 and is inserted into the drill hole. A slurry storage space is formed between the mud guard sleeve 1 and the rod body of the drill rod. A flange ring 11 is provided on the outer wall of the mud guard sleeve 1, and a mounting opening is opened on the flange ring 11. The expansion bolt can pass through the mounting opening to connect with the ground 4 and make one side port of the mud guard sleeve 1 abut against the ground 4, so that mud and water are not easy to leak from the gap between the mud guard sleeve 1 and the ground 4; the mud conveying device 2 is a screw conveyor, and the mud inlet end 21 of the screw conveyor is connected to the mud guard sleeve 1, and the mud outlet end 22 of the screw conveyor is connected to the screening component 3 and can transport the mud and sand in the mud guard sleeve 1 to the screening component 3.
[0033] See also Figure 1 and Figure 2 The screening unit includes an installation box 31, two sand-squeezing rollers 32, two driving motors 33 and two sand-containing boxes 34. The two sand-squeezing rollers 32 are arranged in parallel and opposite to each other in the installation box 31. A mud-passing gap 321 is formed between the roller surfaces of the two sand-squeezing rollers 32. The mud-passing gap 321 is located below the mud outlet end 22 of the mud conveying device 2, and the sand and gravel in the return slurry will stay above the mud-passing gap 321; the sand-containing boxes 34 correspond to the sand-squeezing rollers 32 one by one, and each sand-containing box 34 is arranged between the corresponding sand-squeezing roller 32 and the inner wall of the installation box 31, and the box opening of each sand-containing box 34 is on the roller surface of the corresponding sand-squeezing roller 32 away from the mud-passing gap 321. One side is abutted, and the inside of the two sand boxes 34 forms a sand storage area, and the two sand boxes 34 and the two sand rollers 32 form a slurry storage area with the bottom wall of the installation box 31. A slurry outlet 311 for connecting a water pump is opened on the inner wall of the slurry storage area, and workers can use the water pump to pump out the slurry in the slurry storage area; the driving motors 33 correspond to the sand rollers 32 one by one, and each driving motor 33 is connected to the rotating shaft of the corresponding sand roller 32, and can drive the side of the sand roller 32 close to the mud gap 321 to rotate upward, so that the sand roller 32 can drop the sand and gravel belt staying above the mud gap 321 into the sand box 34.
[0034] With the above settings, when the high-pressure jet grouting pile grouts, the returned slurry overflowing from the drill hole will first be restricted and stored in the slurry storage space formed between the mud guard sleeve 1 and the rod body of the drill pipe, and then be moved to the installation box 31 by the mud conveying device 2. Since the returned slurry will carry some relatively large-sized sand and gravel in addition to mud and water, the worker can set the width of the mud passage gap 321 to be smaller than the size of these sand and gravel. When these sand and gravel fall from the mud outlet end 22 of the mud conveying device 2 towards the mud passage gap 321, their size will first stay above the mud passage gap 321, and then fall into the sand storage boxes 34 on both sides of the mud passage gap 321 as the sand removing roller 32 rotates. The mud and water in the returned slurry will directly pass through the mud passage gap 321 and enter the slurry storage area, so as to effectively separate the sand and gravel from the mud and water, facilitating the recycling or reuse of these mud and sand, and ensuring that the returned slurry overflowing from the drill hole will not spill around the drill hole and pollute the construction site, thus facilitating the construction of the workers.
[0035] It should be noted that since the mud passage gap 321 is composed of two continuously rotating sand removing rollers 32, the mud and sand in the returned slurry will not block the mud passage gap 321 like blocking the mesh holes of a filter screen, so that the on-site returned slurry collection device of the high-pressure jet grouting pile always has good mud and sand separation efficiency during operation.
[0036] Figure 3 Yes Figure 2 is a schematic enlarged view of area A in Figure 4 along Figure 2 in the B-B direction of Figure 3 and Figure 4 Specifically, spiral-shaped or linear-shaped friction increasing grooves 322 can be opened on the sand removing roller 32 to increase the friction between the sand and gravel and the sand removing roller 32 through the friction increasing grooves 322, so as to facilitate the sand removing roller 32 to bring the sand and gravel staying above the mud passage gap 321 into the sand storage boxes 34. Brushes 341 can also be arranged on the box openings of the sand storage boxes 34 close to the sand removing roller 32, and the brushes 341 can be in contact with the roller surface of the sand removing roller 32 to clean the sand and gravel adhered to the roller surface of the sand removing roller 32 and in the friction increasing grooves 322, so that these sand and gravel are not easily introduced into the slurry storage area through the gap between the roller surface of the sand removing roller 32 and the box opening of the sand storage box 34 as the sand removing roller 32 rotates.
[0037] See Figure 1 and Figure 2, a screen 342 is provided at the bottom of the sand box 34. The muddy water entering the sand box 34 can pass through the screen 342 and enter the slurry storage area, so that the muddy water entering the sand box 34 can pass through the screen 342 and enter the slurry storage area, so that the space in the sand box 34 is not easily occupied by the muddy water; a stone discharge hole is provided at the connection between each sand box 34 and the inner wall of the installation box 31. Each sand storage area communicates with the outside through the corresponding stone discharge hole. A flip cover 343 is provided in each stone discharge hole. The bottom of each flip cover 343 is hinged to the outer wall of the installation box 31. A door buckle 344 is rotatably connected to the outer wall of the installation box 31 at the top of each flip cover 343. The door buckle 344 can abut the flip cover 343 between itself and the outer wall of the installation box 31 through rotation, so that workers can pour the sand and gravel in the sand box 34 out to the outside through the stone discharge hole by first turning the door buckle 344 and then opening the flip cover 343.
[0038] The working principle of a kind of on-site return slurry collection device for high-pressure jet grouting piles of the present application during use is specifically as follows:
[0039] It includes a mud guard sleeve 1, a mud conveying device 2 and a screening assembly 3. The mud guard sleeve 1 is arranged at the orifice of the drill hole. The drill rod passes through the mud guard sleeve 1 and is inserted into the drill hole. A slurry storage space is formed between the mud guard sleeve 1 and the rod body of the drill rod; the mud inlet end 21 of the mud conveying device 2 is connected to the slurry storage space. The screening assembly 3 includes a screening unit, a sand storage area and a slurry storage area. The mud outlet end 22 of the mud conveying device 2 is connected to the screening assembly 3 and can move the return slurry in the slurry storage space to the slurry storage area through the screening unit. The screening unit can separate the sand and gravel in the return slurry and move the sand and gravel to the sand storage area. The return slurry overflowing from the drill hole during the grouting of the high-pressure jet grouting pile will first be restricted and stored in the slurry storage space formed between the mud guard sleeve 1 and the rod body of the drill rod, and then be moved to the slurry storage area by the mud conveying device 2. During the movement of these return slurries, the screening unit will separate the sand and gravel in the return slurry and store them separately in the sand storage area, while only the muddy water with sand and gravel removed is stored in the slurry storage area, so as to realize the separation of the mud and sand in the return slurry, facilitate the recycling or reuse of these mud and sand, and ensure that the return slurry overflowing from the drill hole will not spill to the surrounding of the drill hole and cause pollution to the construction site, so as to facilitate the construction of workers.
[0040] It should be noted that the above are all preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.
Claims
1. A field backflow slurry collection device for high-pressure rotary jet grouting piles, which is used to collect the backflow slurry at the drilling hole where the drill pipe is inserted, and is characterized in that: It comprises a mud guard sleeve (1), a mud conveying device (2) and a screening assembly (3), wherein the mud guard sleeve (1) is arranged at the opening of the borehole, the drill rod passes through the mud guard sleeve (1) and is inserted into the borehole, and a slurry storage space is formed between the mud guard sleeve (1) and the rod body of the drill rod; The mud inlet end (21) of the mud conveying device (2) is connected to the slurry storage space, the screening component (3) comprises a screening unit, a sand storage area and a slurry storage area, the mud outlet end (22) of the mud conveying device (2) is connected to the screening component (3) and is capable of moving the return slurry in the slurry storage space to the slurry storage area through the screening unit, and the screening unit is capable of separating sand and gravel from the return slurry and moving the sand and gravel to the sand storage area.
2. The on-site backflow slurry collection device for high-pressure jet grouting piles according to claim 1, characterized in that: A flange ring (11) is provided on the outer wall of the mud guard sleeve (1), and a mounting opening is provided on the flange ring (11). An expansion bolt can pass through the mounting opening to connect with the ground (4) and make a side port of the mud guard sleeve (1) abut against the ground (4).
3. The on-site backflow slurry collection device for high-pressure jet grouting piles according to claim 1, characterized in that: The mud conveying device (2) is a screw conveyor.
4. The on-site backflow slurry collection device for high-pressure jet grouting piles according to claim 1, characterized in that: The screening unit comprises a mounting box (31), two sand-swiping rollers (32), two driving motors (33) and two sand-containing boxes (34); the two sand-swiping rollers (32) are arranged in parallel and opposite to each other in the mounting box (31); a mud-passing gap (321) is formed between the roller surfaces of the two sand-swiping rollers (32); the mud-passing gap (321) is located below the mud outlet end (22) of the mud conveying device (2); and the sand and gravel in the returned slurry will stay above the mud-passing gap (321); The sand containing boxes (34) correspond to the sand-moving rollers (32) one by one, each of the sand containing boxes (34) is arranged between the corresponding sand-moving roller (32) and the inner wall of the installation box (31), and the box opening of each of the sand containing boxes (34) abuts against the side of the roller surface of the corresponding sand-moving roller (32) away from the mud-passing gap (321), the inside of the two sand containing boxes (34) forms the sand storage area, and the space between the two sand containing boxes (34) and the two sand-moving rollers (32) and the bottom wall of the installation box (31) forms the slurry storage area; The driving motors (33) correspond to the sand-moving rollers (32) one by one. Each driving motor (33) is in driving connection with the corresponding sand-moving roller (32) and is capable of driving the sand-moving roller (32) to rotate so as to drop the sand and gravel belt remaining above the mud-passing gap (321) into the sand containing box (34).
5. The on-site backflow slurry collection device for high-pressure rotary jet grouting piles according to claim 4, characterized in that: The sand-moving roller (32) is provided with a friction-increasing groove (322).
6. The on-site return slurry collection device for high-pressure rotary jet grouting piles according to claim 5, characterized in that: A brush (341) is provided on the opening of the sand box (34) close to the sand-moving roller (32), and the brush (341) can abut against the roller surface of the sand-moving roller (32).
7. A device for collecting on-site backflow slurry of high-pressure jet grouting piles according to claim 4, characterized in that: A screen (342) is provided at the bottom of the sand box (34), and muddy water entering the sand box (34) can pass through the screen (342) and enter the slurry storage area.
8. A device for collecting on-site backflow slurry of high-pressure jet grouting piles according to claim 4, characterized in that: A discharge hole is provided at the connection between each of the sand boxes (34) and the inner wall of the installation box (31). Each of the sand storage areas communicates with the outside through the corresponding discharge hole, and a flip cover (343) is hinged in each of the discharge holes.