Slurry filtering device for high-pressure jet grouting pile construction

Abstract

The utility model provides a slurry filtering device for high-pressure jet grouting pile construction, which relates to the technical field of deep foundation pit engineering bottom layer cutting, and comprises a filter cartridge, a rotating ring is rotatably connected on the center line of the filter cartridge close to the cartridge opening, and a plurality of inner side filter plates and outer side filter plates are driven by the rotating ring to rotate. Slurry is placed in a plurality of inner side filter plates through a feeding pipe and is filtered under the action of rotating centrifugal force, the bottom edges of the plurality of inner side filter plates are pushed to obliquely swing until a plurality of impurity removal grooves are located in the plurality of inner side filter plates, then the plurality of inner side filter plates continuously rotate, and at the moment, the inner side filter plates are in an inclined state; therefore, under the action of centrifugal force, impurities filtered by the inner surface of the filter plate on the inner side can move downwards in the rotating process and are finally discharged through the impurity discharging groove, and automatic discharging of the internal impurities is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bottom layer cutting in deep foundation pit engineering, and in particular to a slurry filtering device for high-pressure jet grouting pile construction. Background Technology

[0002] During the bottom cutting process of deep foundation pit engineering, the use of high-pressure water cutting will dilute the injected slurry, affecting the strength of the anti-seepage system constructed by the new second pipe.

[0003] Therefore, a slurry filtering device in the prior art, the publication number is: CN211987380U, two of the slurry filters are opened, and when the solid impurities in the feed part are filtered, the piston head moves downward along the axial direction of the shell under the action of the hydraulic drive device, and the check plate in the feed pipe is closed under the action of pressure, and the check plate in the discharge pipe is opened, thereby achieving the effect of recovering useful components in the solid impurities; at the same time, the piston can also scrape off the filter cake on the grid plate on the side of the feed part, thereby increasing the service life of the grid plate. When the solid impurities in the feed part are filtered, the piston head moves upward along the axial direction of the shell under the action of the hydraulic drive device, thereby completing the filtering of the solid impurities.

[0004] However, during use, the filter cake scraped off by the piston head will remain in the shell. Long-term use can easily cause the grid plate in the shell to be blocked on the feed side, affecting the slurry filtration efficiency. Contents of utility model

[0005] The purpose of the utility model is to solve the problems existing in the prior art and to propose a slurry filtering device for high-pressure jet grouting pile construction.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a slurry filtering device for high-pressure rotary jet pile construction, comprising a filter cartridge, a swivel is rotatably connected to the center line of the filter cartridge near the cartridge mouth, a plurality of inner filter plates distributed in a circular array are rotatably connected to the bottom surface of the swivel, and an outer filter plate is rotatably connected to the adjacent edges of two adjacent inner filter plates, the inner filter plates and the outer filter plates are elastically rotatably connected to the inner wall of the filter cartridge between the side edges, a bottom plate is fixedly connected to the bottom edges of the plurality of inner filter plates in the filter cartridge, a plurality of impurity discharge grooves distributed in a circular array around the center line of the filter cartridge are provided on the bottom plate, and a resistance block for promoting the swinging of the bottom edges of the plurality of inner filter plates is inserted through the center of the bottom plate surface.

[0007] Preferably, a gear ring is fixedly connected to the top surface of the rotating ring, and a gear meshing with the tooth surface of the gear ring is rotatably connected inside the filter cartridge.

[0008] Preferably, the bottom of the filter cartridge is fixedly connected to an electric push rod connected to the bottom edge of the abutment block, and the surface of the abutment block is fixedly connected to an inclined block corresponding to the position and number of the inner filter plates.

[0009] Preferably, the inclined block is plugged into the bottom plate, and the inclined edge of the inclined block is slidably connected to the bottom edge of the inner filter plate at the corresponding position.

[0010] Preferably, the inner filter plate and the outer filter plate are both rotatably connected to a spring rod on the side facing away from the inner wall of the filter cartridge, and the telescopic ends of the spring rods are located at the same height in the filter cartridge and are rotatably connected to the inner wall of the filter cartridge.

[0011] Preferably, a guide rail is fixedly connected to the telescopic end of the spring rod in the filter cartridge, and a connecting ring rotatably connected to the telescopic ends of the spring rods is rotatably connected to the guide rail.

[0012] Preferably, a feed pipe is installed on the inner wall of the rotating ring through a rotating joint, and a sealing plate is fixedly connected to the top edge of the inner filter plate and is slidably connected to the bottom surface of the rotating ring.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are:

[0014] 1. In the utility model, a plurality of inner filter plates and outer filter plates are driven to rotate by a rotating ring, and slurry is placed in a plurality of inner filter plates through a feed pipe. Under the action of the rotating centrifugal force, slurry filtration is achieved, and by pushing the bottom edges of the plurality of inner filter plates to tilt and swing, until a plurality of impurity discharge grooves are located in the plurality of inner filter plates, and then the plurality of inner filter plates continue to rotate. At this time, the inner filter plates are in an inclined state. Therefore, under the action of the centrifugal force, the impurities filtered on the inner surface of the inner filter plates will move downward during the rotation process, and finally be discharged through the impurity discharge grooves, that is, the automatic discharge of internal impurities is achieved.

[0015] 2. In the utility model, the outer filter plate is used to cover the gap between the two inner filter plates to prevent the slurry from flying out along the opened gap. The connecting ring provided in addition can also ensure that the telescopic ends of the spring rods will not deviate during the rotation process. Brief Description of the Figures

[0016] Figure 1 This is a three-dimensional structural diagram of a slurry filtering device for high-pressure jet grouting pile construction proposed by the utility model;

[0017] Figure 2 The utility model proposes a slurry filtering device for high-pressure jet grouting pile construction Figure 1 sectional structural diagram;

[0018] Figure 3 The utility model proposes a slurry filtering device for high-pressure jet grouting pile constructionFigure 2 The upward view structural schematic diagram;

[0019] Figure 4 is Figure 2 the side sectional structural schematic diagram.

[0020] Legend description: 1. Filter cylinder; 2. Rotating ring; 3. Gear; 4. Feed pipe; 5. Tooth ring; 6. Guide rail; 7. Spring rod; 8. Outer filter plate; 9. Inner filter plate; 10. Bottom plate; 11. Impurity discharge groove; 12. Contact block; 13. Electric push rod; 14. Sealing plate; 15. Inclined block; 16. Connecting ring. Specific implementation manner

[0021] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described below with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0022] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the specific embodiments disclosed in the following specification.

[0023] As Figures 1-4 shown, a slurry filtering device for high-pressure jet grouting pile construction includes a filter cylinder 1. A rotating ring 2 is rotatably connected near the cylinder mouth on the center line of the filter cylinder 1. A feed pipe 4 is installed on the inner side wall of the rotating ring 2 through a rotary joint. The top edge of the inner filter plate 9 is fixedly connected with a sealing plate 14 that slidably connects with the bottom surface of the rotating ring 2. The top surface of the rotating ring 2 is fixedly connected with a tooth ring 5, and a gear 3 that meshes with the tooth surface of the tooth ring 5 is rotatably connected in the filter cylinder 1. By installing a motor in the filter cylinder 1 to drive the gear 3 to rotate, the rotating ring 2 in meshing connection drives a plurality of inner filter plates 9 and outer filter plates 8 to rotate, and the slurry is placed in a plurality of inner filter plates 9 through the feed pipe 4. Under the action of the centrifugal force during rotation, slurry filtration is realized. When the inner filter plates 9 are in a vertical state, there is no gap at the splicing position between two adjacent inner filter plates 9, that is, effective filtration of the slurry is realized:

[0024] The bottom surface of the swivel ring 2 is rotatably connected with a number of inner filter plates 9 distributed in an annular array, and an outer filter plate 8 is rotatably connected at the adjacent edges of two adjacent inner filter plates 9. The sides of the inner filter plate 9 and the outer filter plate 8 are elastically rotatably connected to the inner wall of the filter cylinder 1. Spring rods 7 are rotatably connected to the sides of the inner filter plate 9 and the outer filter plate 8 facing away from the inner wall of the filter cylinder 1. The telescopic ends of a number of spring rods 7 are at the same height position inside the filter cylinder 1 and are rotatably connected to the inner wall of the filter cylinder 1. A guide rail 6 is fixedly connected at the telescopic end of the spring rod 7 inside the filter cylinder 1. A connecting ring 16 rotatably connected to the telescopic ends of a number of spring rods 7 is rotatably connected to the guide rail 6. The spring rods 7 are arranged to select a spring rod 7 with a certain elastic force according to the centrifugal force when the swivel ring 2 rotates, ensuring that the inner filter plate 9 and the outer filter plate 8 will not swing against the thrust of the spring rod 7 due to centrifugal force in the rotating state. In addition, the outer filter plate 8 is arranged to cover the gap between two adjacent inner filter plates 9 when the outer filter plate 8 turns outwards at the bottom edges of two adjacent inner filter plates 9, preventing the slurry from flying out along the opened gap. In addition, the connecting ring 16 is also arranged to ensure that the telescopic ends of a number of spring rods 7 will not deviate during the rotation process:

[0025] A bottom plate 10 is fixedly connected at the bottom edges of a number of inner filter plates 9 inside the filter cylinder 1. A number of impurity discharge grooves 11 distributed in an annular array around the center line of the filter cylinder 1 are formed on the bottom plate 10, and a contact block 12 for pushing the bottom edges of a number of inner filter plates 9 to swing is inserted through the center of the surface of the bottom plate 10. An electric push rod 13 connected to the bottom edge of the contact block 12 is fixedly connected to the bottom of the filter cylinder 1. In addition, an inclined block 15 corresponding to the position and quantity of a number of inner filter plates 9 is fixedly connected to the surface of the contact block 12. The inclined block 15 is inserted into the bottom plate 10, and the hypotenuse of the inclined block 15 is slidably connected to the bottom edge of the inner filter plate 9 at the corresponding position. When the electric push rod 13 extends to drive the contact block 12 to rise, thereby driving the inclined block 15 to rise and pushing the bottom edges of a number of inner filter plates 9 to tilt and swing against the thrust of the spring rod 7 until a number of impurity discharge grooves 11 are located inside a number of inner filter plates 9, and then a number of inner filter plates 9 continue to rotate. At this time, the inner filter plates 9 are in an inclined state. Therefore, under the action of centrifugal force, the impurities filtered on the inner surface of the inner filter plates 9 will move downward during the rotation and finally be discharged through the impurity discharge grooves 11. In addition, as Figure 1 shown, there is a through hole for discharging and collecting the filtered slurry above the bottom plate 10 on the cylinder wall of the filter cylinder 1.

[0026] Working principle: The slurry enters into several inner filter plates 9 along the feed pipe 4. The rotating ring 2 is used to drive the rotation of several inner filter plates 9. Under the action of centrifugal force, the slurry is filtered by the inner filter plates 9 and then thrown out, and then discharged and collected through the through holes in the cylinder wall. For the impurities on the inner surface of the inner filter plates 9, when the electric push rod 13 extends, the contact block 12 drives the inclined block 15 to rise, and then pushes the bottom edges of several inner filter plates 9 to tilt and swing against the thrust of the spring rod 7 until several impurity discharge grooves 11 are located inside several inner filter plates 9. Then several inner filter plates 9 continue to rotate. At this time, the inner filter plates 9 are in an inclined state. Therefore, under the action of centrifugal force, the sundries filtered on the inner surface of the inner filter plates 9 will move downward during the rotation process and finally be discharged through the impurity discharge grooves 11.

[0027] The wiring diagrams of the motor and the electric push rod 13 in the present utility model belong to the common general knowledge in the art. Their working principles are already known technologies, and their models are selected according to actual use. Therefore, the control methods and wiring arrangements of the motor and the electric push rod 13 will not be explained in detail.

[0028] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present utility model, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A slurry filtering device for high-pressure jet grouting pile construction, comprising a filter cartridge (1), characterized in that: A rotating ring (2) is rotatably connected to the center line of the filter cartridge (1) near the cartridge mouth, a plurality of inner filter plates (9) arranged in a circular array are rotatably connected to the bottom surface of the rotating ring (2), and an outer filter plate (8) is rotatably connected to the adjacent edges of two adjacent inner filter plates (9), the side edges of the inner filter plates (9) and the outer filter plates (8) are elastically rotatably connected to the inner wall of the filter cartridge (1), a bottom plate (10) is fixedly connected to the bottom edges of the plurality of inner filter plates (9) in the filter cartridge (1), a plurality of impurity discharge grooves (11) arranged in a circular array around the center line of the filter cartridge (1) are provided on the bottom plate (10), and a resistance block (12) for pushing the bottom edges of the plurality of inner filter plates (9) to swing is inserted through the center of the surface of the bottom plate (10).

2. The slurry filtering device for high-pressure jet grouting pile construction according to claim 1 is characterized in that: The top surface of the rotating ring (2) is fixedly connected to a gear ring (5), and the filter cartridge (1) is rotatably connected to a gear (3) meshing with the tooth surface of the gear ring (5).

3. The slurry filtering device for high-pressure jet grouting pile construction according to claim 1 is characterized in that: The bottom of the filter cylinder (1) is fixedly connected to an electric push rod (13) connected to the bottom edge of the resistance block (12), and the surface of the resistance block (12) is fixedly connected to an inclined block (15) corresponding to the position and number of the plurality of inner filter plates (9).

4. The slurry filtering device for high-pressure jet grouting pile construction according to claim 3 is characterized in that: The inclined block (15) is plugged into the bottom plate (10), and the inclined edge of the inclined block (15) is slidably connected to the bottom edge of the inner filter plate (9) at a corresponding position.

5. The slurry filtering device for high-pressure jet grouting pile construction according to claim 1 is characterized in that: The inner filter plate (9) and the outer filter plate (8) are both rotatably connected to a spring rod (7) on one side facing away from the inner wall of the filter cartridge (1); the telescopic ends of the spring rods (7) are located at the same height in the filter cartridge (1) and are rotatably connected to the inner wall of the filter cartridge (1).

6. The slurry filtering device for high-pressure jet grouting pile construction according to claim 5 is characterized in that: A guide rail (6) is fixedly connected to the telescopic end of the spring rod (7) in the filter cartridge (1), and a connecting ring (16) is rotatably connected to the guide rail (6) and is rotatably connected to the telescopic ends of the spring rods (7).

7. The slurry filtering device for high-pressure jet grouting pile construction according to claim 1 is characterized in that: A feed pipe (4) is installed on the inner wall of the rotating ring (2) via a rotating joint, and a sealing plate (14) is fixedly connected to the top edge of the inner filter plate (9) and is slidably connected to the bottom surface of the rotating ring (2).

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