Automatic slurry changing device and method using rigid-flexible combined slurry pipe

Abstract

The present application relates to a kind of automatic slurry changing device and method of rigid-flexible combination slurry pipe, including slurry hose, suction steel pipe, counterweight, circular filter hole, annular air hole zone, compressed air delivery hose, air compressor, specific gravity detector, slurry storage tank, the bottom of suction steel pipe is provided with counterweight and circular filter hole, lower portion is provided with annular air hole zone, top is fixedly connected with slurry hose;Annular air hole zone is connected with compressed air delivery hose to form combined slurry pipe, and compressed air delivery hose is connected with air compressor;Slurry hose is connected with slurry storage tank by self-adapting suction pump and specific gravity detector.The present application uses air-lift reverse circulation principle, can realize fully automatic standardization slurry changing construction, and is convenient and reliable, with high reusability, makes up the shortcomings of traditional slurry, such as non-standard, insufficient, unstable, realizes visual monitoring for slurry replacement, creates the construction condition for slurry replacement, greatly reduces the probability of wall joint, wall body clay, leakage and the like of subsequent wall.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of slurry replacement for underground continuous wall construction, and particularly relates to an air-lift reverse circulation automatic slurry replacement device using rigid-flexible combined slurry pipes. BACKGROUND

[0002] At present, the development and construction of underground space in soft soil central urban areas are still booming. With the process of high-quality urban development, the quality and safety of foundation pits and the protection standards of surrounding environment are continuously improved, and it is required that underground enclosure and main structure have no leakage. However, the development of underground space often cannot do without enclosure construction, and the high-quality development of enclosure construction has become an inevitable demand of the industry.

[0003] In the current enclosure construction, the underground continuous wall with joint forms such as rubber water stop belt joint, lock pipe joint or cross steel plate joint all focus on the core point of no leakage. At present, the common difficulty of construction is the replacement of slurry in the groove section. As a crucial procedure, the quality of slurry replacement is directly related to the stability of groove wall, the thickness of sediment, and further affects the quality of concrete pouring. At present, there are many problems in slurry replacement, such as non-standard suction force, insufficient replacement of slurry at the bottom of the groove, unstable specific gravity of slurry after replacement, etc., which directly leads to the fact that impurities in the lower part of the groove section are rolled into the groove section with concrete during the concrete pouring process, resulting in wall body, wall joint and other problems, and finally leading to leakage. SUMMARY

[0004] The purpose of the present application is to provide an automatic slurry replacement device and method using rigid-flexible combined slurry pipes. The poor slurry at the bottom of the groove is extracted by the principle of air-lift reverse circulation, and the extracted slurry is repeatedly circulated and measured to standard until the quality of the slurry in the groove section, especially the slurry at the bottom of the groove, meets the standard, and the replacement of slurry is completed. This provides favorable conditions for the quality of the wall.

[0005] To achieve the above purpose, the technical solution of the present application is as follows: an automatic slurry replacement device using rigid-flexible combined slurry pipes, comprising a slurry outlet hose, a slurry suction steel pipe, a counterweight, a circular filter hole, an annular air hole belt, a compressed air delivery hose, an air compressor, a specific gravity detector, and a slurry storage tank. The slurry suction steel pipe is provided with a counterweight and a circular filter hole at the bottom, an annular air hole belt at the lower part, and a slurry outlet hose fixedly connected at the top through a fixing bolt.

[0006] Further, the slurry outlet hose and the compressed air delivery hose located at the opening of the underground continuous wall groove section are fixed on a sliding tray, and the sliding tray is installed on the sliding rails on both sides of the opening of the underground continuous wall groove section.

[0007] Further, the top of the slurry suction steel pipe is provided with lifting ports on both sides.

[0008] A construction method of an automatic slurry changing device using a combined rigid-flexible slurry pipe is as follows:

[0009] Step 1: connect the slurry outlet hose with the slurry suction steel pipe and fix it with a fixing bolt to ensure effective connection;

[0010] Step 2: install a counterweight at the bottom of the slurry suction steel pipe to ensure that the slurry suction steel pipe can smoothly sink to the bottom of the groove;

[0011] Step 3: set multiple rows of circular filter holes at the lower part of the slurry suction steel pipe along the pipe side to filter large impurities at the bottom of the groove section and prevent the slurry pipe from being blocked during the slurry outlet process;

[0012] Step 4: install an annular air hole belt at the bottom of the steel pipe and connect the compressed air delivery hose with the annular air hole belt;

[0013] Step 6: hoist the combined slurry pipe through the hoisting opening and place it at the bottom of the groove section, pass the slurry outlet hose and the compressed air delivery hose into the sliding tray and place it on the sliding rail;

[0014] Step 7: connect the compressed air delivery hose with the air compressor to provide continuous and stable compressed gas for subsequent slurry changing;

[0015] Step 8: connect the slurry outlet hose with the self-adaptive slurry suction pump and connect the slurry suction pump with the mud specific gravity detector, uniformly discharge the mud into the mud background slurry storage tank after detection;

[0016] Step 9: start the air compressor and the self-adaptive slurry suction pump, simultaneously input fresh slurry at the top of the groove, observe the discharge state of the initial bottom mud, measure the mud indexes, record the core indexes of specific gravity, viscosity and sand content, uniformly translate the combined slurry pipe on the sliding rail, simultaneously record the slurry outlet indexes, until the slurry outlet indexes tend to be stable, recheck the bottom mud, until the slurry indexes are qualified, the standardized slurry changing is completed, and all the above devices are immediately disassembled for the next groove section.

[0017] The beneficial effects of the present application are:

[0018] The combined slurry pipe device and method of the present application can realize fully automatic and standardized slurry changing construction by adopting the air-lift reverse circulation principle, is convenient and reliable, has high reuse rate, makes up for the shortcomings of traditional slurry changing, such as non-standard, insufficient and instability, realizes visual monitoring of the whole slurry changing process, creates convenient slurry changing construction conditions, and greatly reduces the probability of subsequent wall joint, wall body mud inclusion and leakage of the diaphragm wall. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 is a cross-sectional view of the automatic slurry changing device of the present application;

[0020] Fig. 2is a schematic diagram of the automatic slurry changing device according to the present application;

[0021] Fig. 3 is a detailed view of the main part of the automatic slurry changing device according to the present application;

[0022] In the figure: 1: slurry outlet hose, 2: slurry suction steel pipe, 3: fixing bolt, 4: counterweight, 5: circular filter hole, 6: annular air hole belt, 7: compressed air delivery hose, 8: hoisting port, 9: sliding tray, 10: sliding rail, 11: air compressor, 12: specific gravity detector, 13: slurry storage tank. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solutions of the present application, the preferred embodiments of the present application are described below in combination with specific examples:

[0024] The present application aims to precisely control the slurry changing of the underground continuous wall groove section, further substantially improve the slurry changing quality of the ground wall groove section, and provide an automatic slurry changing device and method using a rigid-flexible combined slurry pipe.

[0025] As shown in Figs. 1 to 3 , the automatic slurry changing device using a rigid-flexible combined slurry pipe provided by the present application embodiment comprises a slurry outlet hose 1, a slurry suction steel pipe 2, a fixing bolt 3, a counterweight 4, a circular filter hole 5, an annular air hole belt 6, a compressed air delivery hose 7, a hoisting port 8, a sliding tray 9, a sliding rail 10, an air compressor 11, a specific gravity detector 12, and a slurry storage tank 13.

[0026] The bottom of the slurry suction steel pipe 2 is provided with the counterweight 4 and the circular filter hole 5, the lower part is provided with the annular air hole belt 6, and the top is fixedly connected with the slurry outlet hose 1 through the fixing bolt 3; the annular air hole belt 6 is connected with the air compressor 11 through the compressed air delivery hose 7; and the slurry outlet hose 1 is connected with the slurry storage tank 13 through the self-adaptive slurry suction pump and the specific gravity detector 12.

[0027] The slurry outlet hose 1 and the compressed air delivery hose 7 located on the mouth of the underground continuous wall groove section are fixed on the sliding tray 9, and the sliding tray 9 is installed on the sliding rail 10 on both sides of the mouth of the underground continuous wall groove section.

[0028] The top of the slurry suction steel pipe 2 is provided with the hoisting port 8 on both sides.

[0029] The construction method of the automatic slurry changing device using a rigid-flexible combined slurry pipe according to the present application is as follows:

[0030] First step: connect the slurry outlet hose 1 with the slurry suction steel pipe 2 and fix them with the fixing bolt 3 to ensure effective connection;

[0031] Second step: install the counterweight 4 at the bottom of the slurry suction steel pipe to ensure that the slurry suction steel pipe can smoothly sink to the bottom of the groove;

[0032] Third step: Set multiple rows of circular filter holes 5 along the side of the lower part of the suction pipe to filter large impurities at the bottom of the groove section and prevent the pipe from being blocked during the pulp discharge process;

[0033] Fourth step: Install an annular air hole belt 6 at the bottom of the steel pipe and connect the compressed air delivery hose 7 to the air hole belt;

[0034] Sixth step: Hoist the combined pipe through the lifting port 8 and place it on the bottom of the groove section, pass the pulp discharge hose 1 and the compressed air delivery hose 7 through the sliding tray 9, and place it on the sliding rail 10;

[0035] Seventh step: Connect the compressed air delivery hose 7 to the air compressor 11 to provide continuous and stable compressed gas for subsequent pulp replacement;

[0036] Eighth step: Connect the pulp discharge hose 1 to the self-adaptive suction pump and connect the suction pump to the mud specific gravity detector 12, then uniformly discharge the detected mud to the mud back-end storage tank 13;

[0037] Ninth step: Start the air compressor and the suction pump, simultaneously input fresh slurry at the top of the groove, observe the discharge state of the initial bottom mud, measure the mud indicators, record the core indicators such as specific gravity, viscosity, and sand content, and uniformly translate the combined pipe on the sliding rail, simultaneously record the pulp discharge indicators, until the pulp discharge indicators tend to be stable, then recheck the bottom mud, until the slurry indicators are qualified, the standardized pulp replacement is completed, and all the above devices are immediately disassembled for use in the next groove section.

Claims

1. An automatic slurry changing device that combines rigid and flexible slurry pipes, characterized in that: The utility model relates to a combined slurry pipe, which comprises a slurry outlet hose, a slurry suction steel pipe, a counterweight, a circular filter hole, an annular air hole belt, a compressed air conveying hose, an air compressor, a specific gravity detector and a slurry storage tank.

2. A construction method of an automatic pulp changing device using the combined rigid-flexible pulp pipe according to claim 1, characterized in that, The steps are as follows: Step 1: connect the slurry outlet hose with the slurry suction steel pipe and fix them with a fixing bolt to ensure effective connection; Step 2: install the counterweight at the bottom of the slurry suction steel pipe to ensure that the slurry suction steel pipe sinks smoothly to the bottom of the groove section; Step 3: install multiple rows of circular filter holes along the side of the slurry suction steel pipe at the lower part to filter large impurities at the bottom of the groove section and prevent the slurry pipe from being blocked during the slurry discharge process; Step 4: install the annular air hole belt at the bottom of the steel pipe and connect the compressed air conveying hose with the annular air hole belt; Step 5: hoist the combined slurry pipe through the lifting port and place it at the bottom of the groove section, and pass the slurry outlet hose and the compressed air conveying hose into the sliding tray and place them on the sliding rail; Step 6: connect the compressed air conveying hose with the air compressor to provide continuous and stable compressed gas for subsequent slurry replacement; Step 7: connect the slurry outlet hose with the adaptive slurry suction pump and connect the slurry suction pump with the mud specific gravity detector, and after detection, uniformly discharge into the slurry storage tank in the back office; Step 8: start the air compressor and the adaptive slurry suction pump, simultaneously input fresh slurry at the top of the groove, observe the discharge state of the initial bottom mud, measure the mud indicators, record the core indicators of specific gravity, viscosity and sand content, and uniformly translate the combined slurry pipe on the sliding rail, simultaneously record the slurry discharge indicators, until the slurry discharge indicators tend to be stable, retest the bottom mud, until the slurry indicators are qualified, the standardized slurry replacement is completed, and all devices are immediately disassembled for the next groove section.

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