Integrated combined construction device for secondary hole cleaning and gravel separation of slurry protection wall cast-in-situ bored pile

Abstract

The invention provides an integrated combined construction device for secondary hole cleaning and gravel separation of a slurry protection wall cast-in-situ bored pile, and belongs to the technical field of secondary hole cleaning and gravel separation of slurry protection wall cast-in-situ bored piles. Comprising a guide pipe, a stamping pipe, a gravel separation assembly, a connecting pipe and a liquid outlet pipe, and the guide pipe is inserted into gravel of a pile hole; the stamping pipe is inserted into the guide pipe, the top of the stamping pipe is of a sealed structure, and the stamping pipe is connected with a stamping assembly and used for filling high-pressure gas into the guide pipe so as to push gravel in the guide pipe to move upwards; the problems of long secondary hole cleaning time, incomplete hole cleaning, thick pile bottom sediment, incapability of separating gravel and the like of secondary hole cleaning of the slurry protection wall cast-in-situ bored pile can be solved, the hole cleaning time is shortened, and the hole cleaning efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of secondary hole cleaning and sand and gravel separation of mud wall bored piles, and specifically relates to an integrated combined construction device for secondary hole cleaning and sand and gravel separation of mud wall bored piles. Background Art

[0002] In the field of construction engineering, especially in pile foundation construction, slurry wall tank pile injection is a common construction technology.

[0003] The mud wall tank is a device used to store and circulate mud during the drilling process. When drilling, the mud wall tank injects mud into the borehole to form a layer of wall to prevent the hole wall from collapsing. At the same time, the mud can also cool the drill bit and carry drilling cuttings.

[0004] The process of drilling with a mud wall tank is as follows: First, determine the pile position according to the design requirements and install the drilling rig. Then, start the mud wall tank and inject mud into the borehole. The drilling rig drives the drill bit to rotate and gradually drill into the formation. During the drilling process, the mud circulates continuously, carrying the drilling debris out of the borehole to keep the hole clean.

[0005] In the secondary hole cleaning stage of the mud wall tank pile injection, the mud in the hole needs to be circulated to remove the sediment at the bottom of the hole. Usually, positive circulation hole cleaning, pump suction reverse circulation hole cleaning, air lift reverse circulation hole cleaning and other methods are used. These methods all use the natural sedimentation of the sedimentation tank to make the sand and gravel settle at the bottom of the tank due to their own specific gravity. However, this method often requires a long time and multiple cycles to meet the requirements.

[0006] At present, there are some problems in the secondary hole cleaning of mud wall tank pile injection. The secondary hole cleaning takes a long time, which affects the construction progress; the hole cleaning is not thorough, the sediment at the bottom of the pile is thick, which reduces the bearing capacity of the pile; and the sand and gravel cannot be separated, which increases the difficulty of subsequent treatment. Therefore, how to improve the efficiency and quality of the secondary hole cleaning of mud wall tank pile injection has become a problem that needs to be solved urgently in the current engineering field. Summary of the invention

[0007] The present invention provides an integrated combined construction device for secondary hole cleaning and sand and gravel separation of mud wall bored piles, which can solve the problems of long secondary hole cleaning time, incomplete hole cleaning, thick sediment at the pile bottom, and inability to separate sand and gravel in secondary hole cleaning of mud wall bored piles, shorten the hole cleaning time, and improve the hole cleaning efficiency.

[0008] The present invention is achieved in that:

[0009] The present invention provides an integrated combined construction device for secondary hole cleaning and sand and gravel separation of mud-wall bored piles, wherein the device comprises a conduit, a punching pipe, a sand and gravel separation component, a connecting pipe and a liquid outlet pipe, wherein the conduit is inserted into the interior of the sand and gravel in the pile hole; the punching pipe is inserted into the interior of the conduit, the top of the punching pipe is a sealing structure, which is connected to the punching component and is used to fill the interior of the conduit with high-pressure gas to push the sand and gravel in the conduit to move upward; the side wall of the conduit is connected to the sand and gravel separation component through the connecting pipe, and the connecting pipe is used to transport the sand and gravel in the conduit to the interior of the sand and gravel separation component, and the sand and gravel separation component is used to separate the sediment of the sand and gravel from the mud and discharge the sediment after compression; the liquid outlet pipe is connected between the sand and gravel separation component and the pile hole, and is used to re-inject the mud separated by the sand and gravel separation component into the interior of the pile hole;

[0010] The top of the conduit is a sealing structure, and a pressure balancing component is fixed on the side wall thereof, so as to ensure the safety of the device in cleaning the pile hole.

[0011] On the basis of the above technical solution, the integrated construction device for secondary hole cleaning and sand and gravel separation of mud wall bored piles of the present invention can also be improved as follows:

[0012] The stamping assembly includes an air compressor and an air intake pipe, one end of the air intake pipe is fixedly connected to the side wall of the stamping pipe through a sealing assembly, and the other end is connected to the output port of the air compressor. The sealing assembly is used to ensure that the gas output by the air compressor directly reaches the bottom of the stamping pipe to reduce the insufficient pressure caused by gas leakage;

[0013] The air intake pipe includes at least one, and the corresponding number of the air compressor includes at least one, and the plurality of air intake pipes simultaneously fill the interior of the ram tube with high-pressure gas to increase the power for the sand and gravel inside the conduit to move upward;

[0014] The sealing assembly comprises a groove arranged on the inner wall of the intake pipe and a protrusion arranged on the outer wall of the stamping pipe, wherein the groove and the protrusion match each other;

[0015] The sealing assembly also includes a spring hanging part, which includes a connecting ear fixed on the outer wall of the stamping assembly and a hook fixed on the outer wall of the stamping tube. The hook is connected to the outer wall of the stamping tube via a spring, and is used to further seal and fix the stamping assembly and the stamping tube by hanging the hook on the connecting ear to prevent them from falling off under the action of high pressure.

[0016] Furthermore, the stamping assembly is a circular smooth structure, and an anti-backflow assembly is fixed on its inner wall to prevent the gas inside the stamping pipe from flowing back and causing damage to the air compressor by carrying the mud and sand, thereby extending the service life of the air compressor;

[0017] The air inlet pipe is a galvanized steel pipe, the axis of which is arranged perpendicularly to the punching pipe, so as to reduce the influence of resistance on the airflow and ensure the power of punching;

[0018] The anti-backflow component is a Tesla valve structure;

[0019] An extrusion ring is fixed on the outer wall of the stamping tube, and the extrusion ring is fixedly connected to the outer wall of the stamping tube by a support rod, and the width of the support rod is smaller than the radius of the stamping tube; a rubber layer is fixed to the outside of the extrusion ring, which is used to form extrusion with the inner wall of the conduit so that the stamping tube is vertically fixed in the middle position inside the conduit.

[0020] Furthermore, a spiral air release valve is provided on the top of the stamping tube, and the valve pipe diameter of the spiral air release valve is 25 mm;

[0021] The interior of the punching pipe is a trumpet-shaped vertical downward structure, which is used to fill the interior of the conduit with high pressure over a large range so that the sand and gravel inside the conduit impact into the connecting pipe.

[0022] Furthermore, a support assembly connected to the pile hole is provided on the side wall of the conduit, and the support assembly is an annular structure, including a support assembly, an inner fixing ring and a support column. A groove is provided at the bottom of the outer fixing ring, and the groove matches the width of the pile hole, and is used to be sleeved on the pile hole to form a connection support; the inner fixing ring is sleeved on the outer wall of the stamping tube, and is fixedly connected to the stamping tube by bolts, and the height of the inner fixing ring is greater than 1 / 5 of the length of the stamping tube; a groove from top to bottom is provided between the corresponding positions of the outer fixing ring and the inner fixing ring, and the support column is fixed in the groove, and is used to form a lateral support force of the outer fixing ring on the inner fixing ring through the support column;

[0023] The length of the support column is adjusted according to the width of the side of the punching tube adjacent to the pile hole, so that the device can perform hole cleaning operations at each position of the pile hole.

[0024] The support columns include four, which are fixed between the outer fixing ring and the inner fixing ring at intervals of 90° in sequence; the support columns include double-layer cross bars and diagonal braces fixed between the cross bars, which are used to further strengthen the support for the stamping tube and ensure that the stamping tube does not tilt under pressure.

[0025] Furthermore, the cooperation of the sand and gravel separation assembly, the connecting pipe and the liquid outlet pipe includes at least one group, which are respectively connected to the side wall of the conduit, and the interval angles between the cooperations of adjacent sand and gravel separation assemblies, the connecting pipe and the liquid outlet pipe are the same;

[0026] The top of the conduit is an arc-shaped structure, specifically composed of the same number of parabolas as the combination of the sand and gravel separation assembly, the connecting pipe and the liquid outlet pipe; the focus of each parabola matches the through-connection position of the connecting pipe and the conduit, so that the sand and gravel rebounded from the top of the conduit enters the interior of the connecting pipe to reach the sand and gravel separation assembly.

[0027] Furthermore, the connecting pipe is a double-layer hose structure, and the upper and lower parts of the connecting pipe connected to the conduit are both arranged as arc structures, so that the sand and gravel enter the interior of the connecting pipe along the arc according to inertia;

[0028] The connecting pipe is arranged obliquely to the conduit, and the inclination angle is set to an acute angle to prevent the sand and gravel inside the connecting pipe from flowing back;

[0029] The position where the connecting pipe is connected to the conduit is an arc-shaped structure, and the position where the connecting pipe is connected to the sand and gravel separation component is a straight line structure.

[0030] Furthermore, the sand and gravel separation assembly includes a shell, a separation chamber and a compression chamber. The shell is a square structure. The interior of the shell is divided into two parts, namely, the separation chamber and the compression chamber. A separation screen cylinder is arranged inside the separation chamber. The separation screen cylinder is inclined. The bottom of the inclined end thereof abuts against the compression chamber. A barrier door is arranged at the connection position. The barrier door extends to the top of the shell. The switch is controlled by manual operation. The top of the inclined end of the separation screen cylinder abuts against the connecting pipe.

[0031] The bottom of the separation sieve cylinder is arranged in a grid shape, and is used to separate sediment and mud according to size; the top of the separation sieve cylinder is connected to a vibration motor, and the vibration motor is used to drive the separation sieve cylinder to vibrate rapidly to increase the speed of separation of sediment and mud.

[0032] Furthermore, the compression chamber includes a steel plate, a card slot and a press, wherein the card slot is arranged on the side wall of the sand and gravel separation component away from the shell, and a slide rail is arranged at the bottom thereof; a convex structure matching the slide rail is arranged at the bottom of the steel plate; the press is fixed on the top of the steel plate, and the press compresses the sediment on the steel plate by pressing downward and removes it through the card slot;

[0033] A rolling door is arranged on the top of the card slot, and the sediment blocks the splashing of the material during the compression process of the press.

[0034] Furthermore, the liquid outlet pipe is a hose structure, which is fixed to the side wall of the pile hole by a fixing member; and a support frame is provided between the sand and gravel separation assembly and the liquid outlet pipe, and the liquid outlet pipe is fixed between the support frames, so that the liquid outlet pipe forms a parabolic structure and is tangent to the side wall of the pile hole to limit the track of mud entering the pile hole and reduce the impact of mud on the guide tube;

[0035] The position where the fixing member and the support frame contact the liquid outlet pipe is an annular structure, and the inner wall thereof is an elastic structure, which is used to avoid squeezing the liquid outlet pipe so as to avoid splashing of the slurry inside the liquid outlet pipe during the output process;

[0036] The annular structure comprises an upper and a lower layer, which are fixedly connected by bolts.

[0037] Compared with the prior art, the beneficial effects of the integrated combined construction device for secondary hole cleaning and sand and gravel separation of mud wall bored piles provided by the present invention are:

[0038] Efficient hole cleaning and precise control: The present invention improves the hole cleaning speed and can complete the hole cleaning operation in a relatively short time. The hole cleaning degree can be intuitively judged by the amount of solid matter discharged, which is clear and provides a reliable guarantee for the construction quality. It avoids the problems of thick sediment at the bottom of the pile caused by incomplete hole cleaning in traditional processes, and ensures the stable and reliable quality of the pile foundation.

[0039] Recycling and cost saving: The present invention realizes the reuse of returned mud. During the construction process, the treated mud can be put into use again, which greatly reduces the cost of mud use. It not only improves the utilization rate of resources, but also reduces the time and economic cost caused by frequent preparation of new mud, providing strong support for the efficient advancement of the project.

[0040] Green and environmentally friendly, convenient transportation: The present invention is more convenient in discharging and transporting solid sediments. At the same time, it reduces the discharge of mud and effectively protects the environment. The present invention not only meets the requirements of modern engineering construction for green and environmental protection, but also provides a new solution for the sustainable development of engineering. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0042] Figure 1 It is a schematic diagram of a combined construction device for secondary hole cleaning and sand and gravel separation of mud wall bored piles;

[0043] Figure 2 It is a cross-sectional view of a combined construction device for secondary hole cleaning and sand and gravel separation of mud wall bored piles;

[0044] Figure 3 for Figure 2 A magnified view of middle;

[0045] Figure 4 A schematic diagram of a stamping component of a combined construction device for secondary hole cleaning and sand and gravel separation of a mud wall bored pile;

[0046] Figure 5 It is a schematic diagram of the interior of a sand and gravel separation component of a mud wall bored pile secondary hole cleaning and sand and gravel separation integrated combined construction device;

[0047] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0048] 10. Conduit; 11. Support assembly; 111. External fixing ring; 112. Internal fixing ring; 113. Support column; 20. Punching pipe; 21. Punching assembly; 211. Air compressor; 212. Inlet pipe; 213. Sealing assembly; 30. Sand and gravel separation assembly; 31. Shell; 32. Separation chamber; 33. Compression chamber; 331. Steel plate; 332. Slot; 333. Press; 40. Connecting pipe; 50. Liquid outlet pipe. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0050] like Figure 1 , Figure 2 , Figure 3As shown, it is a first embodiment of a combined construction device for secondary hole cleaning and sand and gravel separation of a mud-wall bored pile provided by the present invention. In this embodiment, it includes a conduit 10, a punching pipe 20, a sand and gravel separation assembly 30, a connecting pipe 40 and a liquid outlet pipe 50. The conduit 10 is inserted into the sand and gravel in the pile hole; the conduit 10 is inserted into the conduit 10, and the top of the punching pipe 20 is a sealing structure, which is connected to the punching assembly 21, and is used to fill the conduit 10 with high-pressure gas to push the sand and gravel inside the conduit 10 to move upward; the side wall of the conduit 10 is connected to the sand and gravel separation assembly 30 through a connecting pipe 40, and the connecting pipe 40 is used to transport the sand and gravel inside the conduit 10 to the inside of the sand and gravel separation assembly 30, and the sand and gravel separation assembly 30 is used to separate the sediment of the sand and gravel from the mud and discharge the sediment after compression; a liquid outlet pipe 50 is connected between the sand and gravel separation assembly 30 and the pile hole, and is used to re-inject the mud separated by the sand and gravel separation assembly 30 into the pile hole;

[0051] The top of the conduit 10 is a sealing structure, and a pressure balancing component is fixed on the side wall thereof to ensure the safety of the device in cleaning the pile hole.

[0052] Among them, in the above technical solution, the stamping assembly 21 includes an air compressor 211 and an air inlet pipe 212. One end of the air inlet pipe 212 is fixedly connected to the side wall of the stamping tube 20 through a sealing assembly 213, and the other end is connected to the output port of the air compressor 211. The sealing assembly 213 is used to ensure that the gas output by the air compressor 211 directly reaches the bottom of the stamping tube 20 to reduce the insufficient pressure caused by gas leakage;

[0053] There is at least one air intake pipe 212, and the number of corresponding air compressors 211 is at least one. The plurality of air intake pipes 212 simultaneously fill the inside of the ram tube 20 with high-pressure gas to increase the power for the sand and gravel inside the conduit 10 to move upward.

[0054] The sealing assembly 213 includes a groove arranged on the inner wall of the air inlet pipe 212 and a protrusion arranged on the outer wall of the stamping pipe 20, and the groove and the protrusion match each other;

[0055] The sealing assembly 213 also includes a spring hanging part, which includes a connecting ear fixed on the outer wall of the stamping assembly 21 and a hook fixed on the outer wall of the stamping tube 20. The hook is connected to the outer wall of the stamping tube 20 through a spring, and is used to further seal and fix the stamping assembly 21 and the stamping tube 20 by hanging the hook on the connecting ear to prevent them from falling off under the action of high pressure.

[0056] like Figure 4As shown, further, in the above technical solution, the stamping component 21 is a circular smooth structure, and an anti-backflow component is fixed on its inner wall to prevent the gas inside the stamping tube 20 from flowing back and causing damage to the air compressor 211 by carrying mud and sand, so as to extend the service life of the air compressor 211;

[0057] The air inlet pipe 212 is a galvanized steel pipe, and its axis is arranged perpendicular to the punching pipe 20, so as to reduce the influence of resistance on the airflow to ensure the power of punching;

[0058] The anti-backflow component is a Tesla valve structure;

[0059] An extrusion ring is fixed on the outer wall of the stamping tube 20, and the extrusion ring is fixedly connected to the outer wall of the stamping tube 20 by a support rod, and the width of the support rod is smaller than the radius of the stamping tube 20; a rubber layer is fixed to the outside of the extrusion ring, which is used to form extrusion with the inner wall of the catheter 10 so that the stamping tube 20 is vertically fixed in the middle position inside the catheter 10.

[0060] Further, in the above technical solution, a spiral air release valve is provided on the top of the stamping tube 20, and the valve pipe diameter of the spiral air release valve is 25 mm;

[0061] The interior of the punching pipe 20 is a trumpet-shaped vertically downward structure, which is used to fill the interior of the conduit 10 with high pressure over a large area so that the sand and gravel inside the conduit 10 impact into the connecting pipe 40 .

[0062] Further, in the above technical solution, a support assembly 11 connected to a pile hole is provided on the side wall of the catheter 10. The support assembly 11 is an annular structure, including the support assembly 11, an inner fixing ring 112 and a support column 113. A groove is provided at the bottom of the outer fixing ring 111. The groove matches the width of the pile hole and is used to be sleeved on the pile hole to form a connection support; the inner fixing ring 112 is sleeved on the outer wall of the stamping tube 20 and is fixedly connected to the stamping tube 20 by bolts, and the height of the inner fixing ring 112 is greater than 1 / 5 of the length of the stamping tube 20; a groove from top to bottom is provided between the corresponding positions of the outer fixing ring 111 and the inner fixing ring 112, and the support column 113 is fixed in the groove, which is used to form a lateral support force of the outer fixing ring 111 on the inner fixing ring 112 through the support column 113;

[0063] The length of the support column 113 is adjusted according to the width of the side of the punching tube 20 adjacent to the pile hole, so that the device can perform hole cleaning operations at each position of the pile hole;

[0064] The support columns 113 include four, which are fixed between the outer fixing ring 111 and the inner fixing ring 112 at intervals of 90° in sequence; the support columns 113 include double-layer cross bars and diagonal braces fixed between the cross bars, which are used to further strengthen the support for the stamping tube 20 and ensure that the stamping tube 20 does not tilt under pressure.

[0065] Further, in the above technical solution, the sand and gravel separation assembly 30, the connecting pipe 40 and the liquid outlet pipe 50 include at least one group, which are respectively connected to the side wall of the conduit 10, and the interval angles between the adjacent sand and gravel separation assemblies 30, the connecting pipe 40 and the liquid outlet pipe 50 are the same;

[0066] The top of the conduit 10 is an arc-shaped structure, specifically composed of the same number of parabolas as the combination of the sand and gravel separation component 30, the connecting pipe 40 and the liquid outlet pipe 50; the focus of each parabola matches the through-connection position between the connecting pipe 40 and the conduit 10, so that the sand and gravel rebounded from the top of the conduit 10 enters the interior of the connecting pipe 40 to reach the sand and gravel separation component 30.

[0067] Furthermore, in the above technical solution, the connecting pipe 40 is a double-layer hose structure, and the upper and lower parts of the connecting pipe 40 connected to the conduit 10 are both set as arc structures, so that the sand and gravel enter the interior of the connecting pipe 40 along the arc according to inertia;

[0068] The connecting pipe 40 and the conduit 10 are arranged in an inclined shape, and the inclination angle is set to an acute angle to prevent the sand and gravel inside the connecting pipe 40 from flowing back;

[0069] The position where the connecting pipe 40 is connected to the guide tube 10 is an arc-shaped structure, and the position where the connecting pipe 40 is connected to the sand and gravel separation component 30 is a straight line structure.

[0070] like Figure 5 As shown, further, in the above technical solution, the sand and gravel separation component 30 includes a shell 31, a separation chamber 32 and a compression chamber 33. The shell 31 is a square structure. The interior of the shell 31 is divided into a separation chamber 32 and a compression chamber 33. A separation screen cylinder is arranged inside the separation chamber 32. The separation screen cylinder is inclined, and the bottom of the inclined end thereof abuts against the compression chamber 33. A barrier door is arranged at the connection position. The barrier door extends to the top of the shell 31, and its switch is controlled by manual operation. The top of the inclined end of the separation screen cylinder abuts against the connecting pipe 40.

[0071] The bottom of the separation sieve cylinder is arranged in a grid shape, which is used to separate sediment and mud according to size; the top of the separation sieve cylinder is connected to a vibration motor, which is used to drive the separation sieve cylinder to vibrate rapidly to increase the speed of separation of sediment and mud.

[0072] Further, in the above technical solution, the compression chamber 33 includes a steel plate 331, a slot 332 and a press 333. The slot 332 is arranged on the side wall of the sand and gravel separation assembly 30 away from the housing 31, and a slide rail is arranged at the bottom thereof; a convex structure matching the slide rail is arranged at the bottom of the steel plate 331; a press 333 is fixed on the top of the steel plate 331, and the press 333 compresses the sediment on the steel plate 331 by pressing downward and removes it through the slot 332;

[0073] A rolling door is provided at the top of the slot 332 to prevent splashing of materials during compression of the sediment by the press 333 .

[0074] Furthermore, in the above technical solution, the liquid outlet pipe 50 is a hose structure, which is fixed to the side wall of the pile hole by a fixing member; and a support frame is provided between the sand and gravel separation assembly 30 and the liquid outlet pipe 50, and the liquid outlet pipe 50 is fixed between the support frames, so that the liquid outlet pipe 50 forms a parabolic structure and is tangent to the side wall of the pile hole to limit the track of mud entering the pile hole, thereby reducing the impact of mud on the guide tube 10;

[0075] The positions where the fixing member and the support frame contact the liquid outlet pipe 50 are both annular structures, and the inner wall thereof is an elastic structure, which is used to avoid squeezing the liquid outlet pipe 50 so as to avoid splashing of the mud inside the liquid outlet pipe 50 during the output process;

[0076] The ring structure consists of two layers, upper and lower, which are connected by bolts.

[0077] The present invention provides a second embodiment of a combined construction device for secondary hole cleaning and sand and gravel separation of a mud wall bored pile. In this embodiment, the device is intended to improve construction efficiency and ease of operation while ensuring the safety and reliability of the construction process. The device includes the following improvements and new components:

[0078] Improved stamping components:

[0079] Two-stage compression air compressor 211:

[0080] Cylinder design: It adopts a dual-cylinder series design. The gas compressed in the first-stage cylinder is cooled by the intercooler before entering the second-stage cylinder for secondary compression to improve compression efficiency.

[0081] Intercooler: An intercooler is set between the two-stage cylinders to cool the compressed hot gas, reduce heat energy loss and improve compression efficiency.

[0082] Automatic control valve: An automatic control valve is installed between the two-stage cylinders to adjust the gas flow and pressure to ensure smooth transition of the gas between the two-stage cylinders.

[0083] High-efficiency motor: Equipped with a high-efficiency motor to reduce losses during energy conversion and improve overall energy efficiency.

[0084] Low noise design: The air compressor 211 adopts a soundproof cover and a shock-absorbing base design to reduce noise and vibration during operation.

[0085] Stainless steel intake pipe 212:

[0086] Thickened wall design: thickened stainless steel pipe wall is used to enhance pressure resistance and corrosion resistance and extend service life.

[0087] Internal polishing: Polish the inside of the stainless steel tube to reduce the resistance to gas flow and improve gas flow efficiency.

[0088] Quick connector: Quick connectors are installed at both ends of the air intake pipe 212 to facilitate connection and disassembly with the air compressor 211 and the punching pipe 20, thereby improving construction efficiency.

[0089] Pressure gauge and safety valve: Install a pressure gauge and a safety valve on the air inlet pipe 212 to monitor the gas pressure in real time, prevent overpressure operation, and ensure safety.

[0090] Anti-corrosion treatment: Special anti-corrosion treatment is applied to the surface of stainless steel, such as coating or anodizing, to adapt to various harsh working environments.

[0091] Enhanced sealing components:

[0092] Metal spiral wound gasket design:

[0093] Metal spiral wound gaskets made of materials such as stainless steel and flexible graphite are used to improve temperature and pressure resistance and reduce gas leakage.

[0094] Gaskets of various sizes and shapes are designed to adapt to connection interfaces of different diameters and shapes to ensure sealing reliability.

[0095] Optimization of sealing assembly 213:

[0096] A double-layer metal wound gasket is used at the connection between the air intake pipe 212 and the stamping pipe 20 to enhance the sealing effect.

[0097] Design seal assemblies for easy installation and replacement to reduce maintenance time and costs.

[0098] Improvements of spring hooks:

[0099] High strength spring material selection:

[0100] Choose high-strength spring steel materials, such as piano wire, oil quenched and tempered carbon spring steel wire, oil quenched and tempered silicon manganese spring steel wire, etc. These materials have high fatigue strength and tensile strength and are suitable for withstanding high-pressure environments.

[0101] Spring design optimization:

[0102] When designing a spring, consider using a tapered spring, which has a larger cross-section in high-stress areas to increase its load-bearing capacity.

[0103] Prestressing treatment is adopted to improve the stability and durability of the spring.

[0104] Adjustable spring hook design:

[0105] Design an adjustable spring hook to adapt to different working pressures by changing the preload of the spring.

[0106] Using an adjustable constant force mechanism that combines a gear and linkage mechanism, the constant force level can be adjusted energy-free by changing the spring position without preload.

[0107] Improve the structure of the spring hook:

[0108] Adding an adjusting nut or adjusting screw to the spring hook allows the compression length of the spring to be adjusted within a certain range, thereby changing its operating characteristics.

[0109] The contact surface between the hook of the spring hook and the connecting ear is designed to be serrated or dovetailed to increase contact friction and improve the stability of the connection.

[0110] Add spring protection measures:

[0111] Add anti-corrosion coating or perform surface treatment on the spring surface, such as phosphating, galvanizing, etc., to improve its corrosion resistance and wear resistance.

[0112] Design a protective cover or housing to protect the spring from external environmental influences such as dust, moisture, etc.

[0113] Optimize the installation method of spring hooks:

[0114] Design of quick-install and disassemble spring hooks to reduce maintenance time and labor intensity.

[0115] The butterfly spring is used as a buffer and compensation element to compensate for manufacturing errors and the return of the punch in the mold, etc., to improve the stability and reliability of the system.

[0116] Optimized anti-backflow components:

[0117] Conical valve core design:

[0118] Design a double cone valve core to enhance the sealing effect and reduce the possibility of gas backflow. This design can ensure that the contact between the valve core and the valve seat is closer under high pressure environment, thereby improving the sealing performance.

[0119] Check valve that is easy to clean and maintain:

[0120] In the design of the one-way valve, a removable valve core and valve seat are used to facilitate cleaning and maintenance. This prevents the accumulation of impurities from affecting the sealing performance of the valve and reduces maintenance time and costs.

[0121] Various check valve types:

[0122] We provide various types of check valves, such as lift type, swing type, etc., to adapt to different application scenarios and working conditions. Each type of check valve has unique advantages and can be selected according to the specific use environment and requirements.

[0123] Adjustable one-way valve design:

[0124] Design an adjustable one-way valve to adapt to different working pressure and flow requirements by adjusting the position of the valve core or the tension of the spring. This design allows the user to adjust the performance of the valve according to specific application requirements and improve the flexibility and adaptability of the system.

[0125] Increase the maintenance and care of anti-backflow components:

[0126] Establish a routine maintenance procedure for the check valve, including regular cleaning, checking sealing performance, lubricating moving parts, and checking working conditions. These measures will help extend the service life of the check valve and ensure its reliability at critical moments.

[0127] Optimization of spring fixing method:

[0128] A variety of spring fixing methods are used, such as mechanical fixing, welding fixing, adhesive fixing and riveting fixing, to adapt to different application scenarios. At the same time, the spring design is optimized to improve its elasticity and fatigue resistance, thereby enhancing the stability of the fixation.

[0129] Reliability analysis of the one-way valve core optimization design:

[0130] The reliability analysis-based optimization design method of the check valve core is applied. The randomness of the structural dimension parameters and the acting loads in the design process of the check valve core is considered, and the optimal design variables are determined through probabilistic sensitivity analysis to improve the reliability and performance of the valve core.

[0131] Security feature enhancements:

[0132] The device is equipped with a manual pressure relief valve to quickly release high-pressure gas in an emergency to ensure the safety of operators.

[0133] Through these improvements, the device of the second embodiment improves the construction efficiency, simplicity of operation, safety and durability of the equipment while maintaining the original functions, making it more adaptable to changing construction environments and conditions. At the same time, all improvements adopt existing technologies to ensure the feasibility of implementation.

[0134] Specifically, the principle of the present invention is as follows: the present invention is composed of five parts: a conduit 10, a punching pipe 20, a sand and gravel separation assembly 30, a connecting pipe 40 and a liquid outlet pipe 50. The end of the air inlet pipe 212 connected to the punching pipe 20 is sealed. The conduit 10 is inserted into the sand and gravel in the pile hole; the punching pipe 20 is inserted into the conduit 10, and the top of the punching pipe 20 is a sealing structure connected to the punching assembly 21, which is used to fill the conduit 10 with high-pressure gas to push the sand and gravel inside the conduit 10 to move upward; the side wall of the conduit 10 is connected to the sand and gravel separation assembly 30, and the sand and gravel separation assembly 30 is connected to the punching assembly 21. The assembly 30 is connected through the connecting pipe 40, and the connecting pipe 40 is used to transport the sand and gravel inside the conduit 10 to the inside of the sand and gravel separation assembly 30. The sand and gravel separation assembly 30 is used to separate the sediment of the sand and gravel from the mud and discharge the sediment after compression; the liquid outlet pipe 50 is connected between the sand and gravel separation assembly 30 and the pile hole, and is used to re-inject the mud separated by the sand and gravel separation assembly 30 into the inside of the pile hole; the top of the conduit 10 is a sealing structure, and a pressure balance assembly is fixed on its side wall to ensure the safety of the device in cleaning the pile hole.

Claims

1. A combined construction device for secondary hole cleaning and sand and gravel separation of mud wall bored piles, characterized in that: The invention comprises a conduit (10), a punching pipe (20), a sand and gravel separation assembly (30), a connecting pipe (40) and a liquid outlet pipe (50); the conduit (10) is inserted into the sand and gravel in the pile hole; the punching pipe (20) is inserted into the conduit (10); the top of the punching pipe (20) is a sealing structure connected to the punching assembly (21) and is used to fill the conduit (10) with high-pressure gas to push the sand and gravel in the conduit (10) to move upward; the side wall of the conduit (10) is connected to the punching assembly (21); The sand and gravel separation assembly (30) is connected via the connecting pipe (40), and the connecting pipe (40) is used to transport the sand and gravel in the conduit (10) to the inside of the sand and gravel separation assembly (30). The sand and gravel separation assembly (30) is used to separate the sediment of the sand and gravel from the mud and discharge the sediment after compression; the liquid outlet pipe (50) is connected between the sand and gravel separation assembly (30) and the pile hole, and is used to re-inject the mud separated by the sand and gravel separation assembly (30) into the inside of the pile hole; The top of the conduit (10) is a sealing structure, and a pressure balancing component is fixed on its side wall to ensure the safety of the device in cleaning the pile hole.

2. The one-piece combined construction device for secondary hole cleaning and sand and gravel separation of mud wall bored piles according to claim 1, characterized in that: The stamping assembly (21) comprises an air compressor (211) and an air intake pipe (212); one end of the air intake pipe (212) is fixedly connected to the side wall of the stamping pipe (20) via a sealing assembly (213), and the other end is connected to the output port of the air compressor (211); the sealing assembly (213) is used to ensure that the gas output by the air compressor (211) directly reaches the bottom of the stamping pipe (20) to reduce insufficient pressure caused by gas leakage; The air intake pipe (212) includes at least one, and the corresponding number of the air compressor (211) includes at least one, and the plurality of air intake pipes (212) simultaneously fill the interior of the ramming pipe (20) with high-pressure gas to increase the power for the sand and gravel inside the guide tube (10) to move upward; The sealing assembly (213) comprises a groove arranged on the inner wall of the air intake pipe (212) and a protrusion arranged on the outer wall of the stamping pipe (20), wherein the groove and the protrusion match each other; The sealing assembly (213) also includes a spring hanging member, which includes a connecting ear fixed on the outer wall of the stamping assembly (21) and a hook fixed on the outer wall of the stamping tube (20), and the hook is connected to the outer wall of the stamping tube (20) via a spring, and is used to further seal and fix the stamping assembly (21) and the stamping tube (20) by hanging the hook on the connecting ear to prevent them from falling off under the action of high pressure.

3. The one-piece combined construction device for secondary hole cleaning and sand and gravel separation of mud wall bored piles according to claim 2 is characterized in that: The punching assembly (21) is a circular smooth structure, and an anti-backflow assembly is fixed on its inner wall, which is used to prevent the gas inside the punching tube (20) from flowing back and causing the mud and sand to damage the air compressor (211), thereby extending the service life of the air compressor (211); The air inlet pipe (212) is a galvanized steel pipe, the axis of which is arranged perpendicularly to the punching pipe (20), and is used to reduce the influence of resistance on airflow to ensure the power of punching; The anti-backflow component is a Tesla valve structure; An extrusion ring is fixed on the outer wall of the punching tube (20), and the extrusion ring is fixedly connected to the outer wall of the punching tube (20) via a support rod, and the width of the support rod is smaller than the radius of the punching tube (20); a rubber layer is fixed on the outside of the extrusion ring, which is used to form an extrusion between the inner wall of the catheter (10) so that the punching tube (20) is vertically fixed at the middle position inside the catheter (10).

4. The one-piece combined construction device for secondary hole cleaning and sand and gravel separation of mud wall bored piles according to claim 3 is characterized in that: A spiral air release valve is arranged on the top of the stamping tube (20), and the valve pipe diameter of the spiral air release valve is 25 mm; The interior of the punching pipe (20) is a trumpet-shaped vertically downward structure, which is used to fill high pressure into the interior of the conduit (10) over a large area so that the sand and gravel inside the conduit (10) impact into the connecting pipe (40).

5. The one-piece combined construction device for secondary hole cleaning and sand and gravel separation of mud wall bored piles according to claim 4, characterized in that: A support assembly (11) connected to the pile hole is arranged on the side wall of the conduit (10). The support assembly (11) is an annular structure, comprising a support assembly (11), an inner fixing ring (112) and a support column (113). A groove is arranged at the bottom of the outer fixing ring (111). The groove matches the width of the pile hole and is used to be sleeved on the pile hole to form a connection support. The inner fixing ring (112) is sleeved on the outer wall of the punching tube (20) and is fixedly connected to the punching tube (20) by bolts, and the height of the inner fixing ring (112) is greater than 1 / 5 of the length of the punching tube (20). A groove from top to bottom is arranged between the corresponding positions of the outer fixing ring (111) and the inner fixing ring (112). The support column (113) is fixed in the groove and is used to form a lateral support force of the outer fixing ring (111) on the inner fixing ring (112) through the support column (113). The length of the support column (113) is adjusted according to the width of the punching tube (20) adjacent to the pile hole, so that the device can perform hole cleaning operations at each position of the pile hole. The support columns (113) include four columns, which are fixed between the outer fixing ring (111) and the inner fixing ring (112) at intervals of 90 degrees in sequence; the support columns (113) include double-layer cross bars and diagonal braces fixed between the cross bars, which are used to further strengthen the support for the stamping tube (20) and ensure that the stamping tube (20) does not tilt under pressure.

6. The one-piece combined construction device for secondary hole cleaning and sand and gravel separation of mud wall bored piles according to claim 5, characterized in that: The sand and gravel separation components (30), the connecting pipe (40) and the liquid outlet pipe (50) are matched to each other in at least one group, and are respectively connected to the side wall of the conduit (10), and the interval angles between the adjacent sand and gravel separation components (30), the connecting pipe (40) and the liquid outlet pipe (50) are the same; The top of the conduit (10) is an arc-shaped structure, specifically, it is composed of the same number of parabolas as the combination of the sand and gravel separation component (30), the connecting pipe (40) and the liquid outlet pipe (50); the focus of each parabola matches the through-connection position between the connecting pipe (40) and the conduit (10), so that the sand and gravel rebounded from the top of the conduit (10) enters the interior of the connecting pipe (40) to reach the sand and gravel separation component (30).

7. The one-piece combined construction device for secondary hole cleaning and sand and gravel separation of mud wall bored piles according to claim 6, characterized in that: The connecting pipe (40) is a double-layer hose structure, and the upper and lower parts of the connecting pipe (40) connected to the conduit (10) are both arranged as arc structures, so that sand and gravel can enter the interior of the connecting pipe (40) along the arc according to inertia; The connecting pipe (40) and the conduit (10) are arranged in an oblique manner, and the inclination angle is set to an acute angle to prevent the sand and gravel inside the connecting pipe (40) from flowing back; The position where the connecting pipe (40) is connected to the guide tube (10) is an arc-shaped structure, and the position where the connecting pipe (40) is connected to the sand and gravel separation component (30) is a straight line structure.

8. The one-piece combined construction device for secondary hole cleaning and sand and gravel separation of mud wall bored piles according to claim 7, characterized in that: The sand and gravel separation assembly (30) comprises a shell (31), a separation chamber (32) and a compression chamber (33); the shell (31) is a square structure; the interior of the shell (31) is divided into two structures, namely, the separation chamber (32) and the compression chamber (33); a separation screen cylinder is arranged inside the separation chamber (32); the separation screen cylinder is arranged obliquely, and the bottom of the oblique end thereof abuts against the compression chamber (33); a barrier door is arranged at the connection position; the barrier door extends to the top of the shell (31) and its opening and closing are controlled by manual operation; the top of the oblique end of the separation screen cylinder abuts against the connecting pipe (40); The bottom of the separation sieve cylinder is arranged in a grid shape, and is used to separate sediment and mud according to size; the top of the separation sieve cylinder is connected to a vibration motor, and the vibration motor is used to drive the separation sieve cylinder to vibrate rapidly to increase the speed of separation of sediment and mud.

9. The one-piece combined construction device for secondary hole cleaning and sand and gravel separation of mud wall bored piles according to claim 8, characterized in that: The compression chamber (33) comprises a steel plate (331), a slot (332) and a press (333); the slot (332) is arranged on a side wall of the sand and gravel separation component (30) away from the housing (31), and a slide rail is arranged at the bottom; a protruding structure matching the slide rail is arranged at the bottom of the steel plate (331); the press (333) is fixed on the top of the steel plate (331), and the press (333) compresses the sediment on the steel plate (331) by pressing downward and removes it through the slot (332); A rolling door is provided on the top of the slot (332), and the sediment is used to block the splashing of the material during the compression process of the press (333).

10. The one-piece combined construction device for secondary hole cleaning and sand and gravel separation of mud wall bored piles according to claim 9, characterized in that: The liquid outlet pipe (50) is a hose structure, fixed to the side wall of the pile hole by a fixing member; and a support frame is arranged between the sand and gravel separation assembly (30) and the liquid outlet pipe (50), and the liquid outlet pipe (50) is fixed between the support frames, so that the liquid outlet pipe (50) forms a parabolic structure and is arranged tangent to the side wall of the pile hole to limit the track of mud entering the pile hole, thereby reducing the impact of mud on the guide tube (10); The positions where the fixing member and the support frame contact the liquid outlet pipe (50) are both annular structures, and the inner wall thereof is an elastic structure, so as to avoid squeezing the liquid outlet pipe (50) so as to avoid splashing of the slurry inside the liquid outlet pipe (50) during the discharge process; The annular structure comprises an upper and a lower layer, which are fixedly connected by bolts.

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