Foundation pit air pressure sludge discharging device

Abstract

A foundation pit air pressure mud discharging device comprises a mud discharging bin, an air conveying device, a stirring device and a mud pump, the air conveying device is connected to the mud discharging bin and used for conveying compressed air to the mud discharging bin, the stirring device is arranged in the mud discharging bin and used for stirring mud in the mud discharging bin, and the mud pump is arranged in the mud discharging bin and used for pumping and discharging the mud in the mud discharging bin. According to the mud discharging device, the air conveying device and the stirring device are arranged, compressed air is conveyed into mud in the mud discharging bin through the air conveying device, the mud mixed with the compressed air is stirred by the stirring device, and mud vortex airflow is formed in the mud discharging bin and floats upwards, so that the density and the viscosity of the mud are effectively reduced; and as the density and the viscosity of the slurry are reduced, the slurry pump is not easy to block in the process of discharging the slurry, so that the normal operation of MJS construction is ensured, and the device has the characteristics of high efficiency and high safety.

Description

Technical Field

[0001] The utility model relates to the technical field of deep foundation pit construction, in particular to a foundation pit pneumatic mud discharge device. Background Art

[0002] During the MJS horizontal reinforcement construction process of the foundation pit, mud removal is an important step to ensure the smooth progress of construction. The MJS method will displace some of the particle-containing mud during the MJS horizontal large-diameter and long-distance reinforcement construction. The conventional method of discharging mud is to use a mud pump to directly pump the particle-containing mud out of the foundation pit, but this method can easily cause the mud pump to clog or even burst, affecting the construction progress. Although attempts have been made to only use a mud pump to pump out the upper mud after sedimentation, and to use manual shoveling of sand to load the granular sediment into a bucket and lift it out of the foundation pit, this method is not only labor-intensive and inefficient, but also frequently lifting the bucket will also pose many uncertain safety risks. Therefore, the development of an efficient and reliable mud removal device is of great significance to improving the efficiency of MJS construction. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a foundation pit pneumatic mud discharge device, which can solve the problem that the mud pump is easily blocked and has the characteristics of high efficiency and high safety.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a pneumatic mud discharge device for a foundation pit is provided, including a mud discharge bin, an air transmission device, a stirring device and a mud pump. The air transmission device is connected to the mud discharge bin and is used to transmit compressed air to the mud discharge bin. The stirring device is arranged in the mud discharge bin and is used to stir the mud in the mud discharge bin. The mud pump is arranged in the mud discharge bin and is used to extract and discharge the mud in the mud discharge bin.

[0005] As a further feature of the present invention, the gas delivery device includes an air compressor, an air tank, a pressure regulating valve and an air pipe. The air compressor is connected to the air tank, the air tank is connected to the air pipe through the pressure regulating valve, and the air pipe is connected to the mud discharge bin.

[0006] As a further feature of the present invention, an air outlet is provided on the mud discharge bin, and the air supply pipe is connected to the air outlet of the mud discharge bin.

[0007] As a further feature of the present invention, the invention further comprises a mud discharge pipe, one end of which is located outside the mud discharge bin, and the other end is connected to the mud pump, and the mud pumped by the mud pump is discharged through the mud discharge pipe.

[0008] As a further feature of the present invention, the air delivery device includes an air delivery pipe and an inductive one-way solenoid valve. The air delivery pipe is connected to the mud discharge pipe through the inductive one-way solenoid valve and is used to deliver compressed air to the mud discharge pipe.

[0009] As a further feature of the present invention, a lifting device is further included, which is connected to the mud pump and is used to drive the mud pump to move up and down to adjust the height of the mud pump from the bottom of the mud discharge bin.

[0010] As a further feature of the present invention, the lifting device includes a lifting bracket and a lifting hoist arranged on the lifting bracket, and the lifting end of the lifting hoist is connected to the mud pump.

[0011] As a further feature of the present invention, the stirring device includes a stirring motor and a stirring blade arranged on the stirring motor.

[0012] As a further feature of the present invention, it further includes a liquid level sensor and a control device. The liquid level sensor is arranged in the mud discharge bin and is electrically connected to the control device. The control device is electrically connected to the air supply device, the stirring device and the mud pump respectively.

[0013] As a further feature of the present invention, the utility model further comprises an operating area, which is connected to a mud discharge bin via a pipeline, and the mud in the operating area is transported to the mud discharge bin via the pipeline.

[0014] The beneficial effects of the utility model are as follows: an air delivery device and a stirring device are provided in the utility model, compressed air is delivered to the mud in the mud discharge bin through the air delivery device, the mud mixed with the compressed air is stirred by the stirring device, a mud vortex airflow is formed in the mud discharge bin and floats upward, thereby effectively reducing the density and viscosity of the mud. Due to the reduction in the density and viscosity of the mud, the mud pump is not prone to blockage in the process of discharging the mud, thereby ensuring the normal progress of the MJS construction, and has the characteristics of high efficiency and high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0016] Description of markings: mud discharge bin 1, gas outlet 11, gas supply device 2, air compressor 21, gas storage tank 22, pressure regulating valve 23, gas supply pipe 24, induction one-way solenoid valve 25, stirring device 3, stirring motor 31, stirring blade 32, mud pump 4, mud discharge pipe 41, lifting device 5, lifting bracket 51, lifting hoist 52, liquid level sensor 6, control device 7, working area 8. DETAILED DESCRIPTION

[0017] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0018] like Figure 1 As shown, a pneumatic mud discharge device for a foundation pit includes a mud discharge bin 1, an air transmission device 2, a stirring device 3, a mud pump 4, a lifting device 5, a liquid level sensor 6 and a control device 7.

[0019] The mud discharge bin 1 is arranged adjacent to the MJS reinforced working area 8 in the foundation pit. The mud discharge bin 1 is connected to the working area 8 by a pipeline and is used to collect the mud generated by the MJS construction and the accumulated water in the foundation pit.

[0020] The air delivery device 2 includes an air compressor 21, an air tank 22, a pressure regulating valve 23, and an air pipeline 24. The air compressor 21 is connected to the air tank 22 and mounted on the ground. The air tank 22 is connected to the air pipeline 24 via the pressure regulating valve 23. The air pipeline 24 extends from the ground to the mud silo 1 and connects to the air delivery port 11 on the bottom of the silo 1. The air delivery device 2 delivers compressed air to the mud in the silo 1. During use, the air compressor 21 panel sets the limit and the pressure regulating valve 23 supplies the required air pressure according to the construction requirements.

[0021] The stirring device 3 is arranged in the mud discharge bin 1 , and includes a stirring motor 31 and a stirring blade 32 arranged on the stirring motor 31 . The mud in the mud discharge bin 1 is stirred by the stirring device 3 .

[0022] The lifting device 5 is provided in the mud discharge bin 1 and is used to drive the mud pump 4 to move up and down to adjust the height of the mud pump 4 from the bottom of the mud discharge bin 1. Specifically, the lifting device 5 includes a lifting bracket 51 and a lifting hoist 52 provided on the lifting bracket 51, and the lifting end of the lifting hoist 52 is connected to the mud pump 4.

[0023] The mud pump 4 is arranged in the mud discharge bin 1, and the mud pump 4 is connected to one end of the mud discharge pipe 41. The other end of the mud discharge pipe 41 extends to the outside of the mud discharge bin 1. The mud in the mud discharge bin 1 is extracted by the mud pump 4 and discharged through the mud discharge pipe 41.

[0024] The gas supply device 2 also includes an inductive one-way solenoid valve 25. The gas supply pipe 24 and the mud discharge pipe 41 are connected through the inductive one-way solenoid valve 25, and a connection point is set every 5 meters. When the inductive one-way solenoid valve 25 senses that mud is flowing through the mud discharge pipe 41, the inductive one-way solenoid valve 25 opens, and the gas supply pipe 24 transports compressed air to the mud discharge pipe 41 for secondary pressurization.

[0025] Liquid level sensor 6 is installed in the mud discharge bin 1 and is electrically connected to control device 7. Control device 7 is electrically connected to gas supply device 2, stirring device 3, and mud pump 4. Liquid level sensor 6 is used to monitor the mud level in the mud discharge bin 1, while control device 7 is used to control the start and stop of gas supply device 2, stirring device 3, and mud pump 4. The installation of liquid level sensor 6 and control device 7 enables automatic mud pumping and discharge, achieving the effect of automated operation of control device 7 and reducing the labor intensity of manual operation.

[0026] The working process of the above-mentioned device is as follows: the mud containing silt particles generated during the MJS construction process is sucked back from the working area 8 and transported to the mud discharge bin 1. The stirring device 3 is started to stir the mud in the mud discharge bin 1. The sediment particles at the bottom are stirred and lifted up by stirring. At the same time, compressed air is transported into the mud through the air supply device 2, and air pressure is applied. Under the dual action of the stirring device 3 and the air pressure, the mud is fully mixed and churned, forming a mud vortex airflow to make the mud float. At this time, the density and viscosity of the mud are effectively reduced. When the mud floats to the set liquid level, the liquid level sensor 6 transmits a signal to the control device 7. The control device 7 controls the mud pump 4 to start. Then, the mud in the mud discharge bin 1 is pumped out by the mud pump 4, successfully solving the problem of easy clogging of the mud pump 4. During the pumping process, compressed air is transported to the mud discharge pipe 41 for a second time through the induction one-way solenoid valve 25 for secondary pressurization, thereby further improving the mud discharge efficiency. In the above process, the start and stop of the mud pump 4 is controlled by the liquid level sensor 6 and the control device 7, so that the mud can be automatically pumped out to ensure the continuity and stability of the mud pumping in the mud discharge bin 1.

[0027] The above embodiments are only used to illustrate the present invention. Any person with ordinary knowledge in the technical field can make equivalent embodiments by making partial changes or modifications to the technical content disclosed in the present invention without departing from the scope of the technical features of the present invention, and the equivalent embodiments still fall within the scope of the technical features of the present invention without departing from the technical features of the present invention.

Claims

1. A pneumatic mud discharge device for foundation pit, characterized by: It includes a mud discharge bin, an air supply device, a stirring device and a mud pump. The air supply device is connected to the mud discharge bin and is used to supply compressed air to the mud discharge bin. The stirring device is arranged in the mud discharge bin and is used to stir the mud in the mud discharge bin. The mud pump is arranged in the mud discharge bin and is used to extract and discharge the mud in the mud discharge bin.

2. The pneumatic mud removal device for foundation pit according to claim 1, characterized in that: The gas delivery device includes an air compressor, an air tank, a pressure regulating valve and an air delivery pipe. The air compressor is connected to the air tank, the air tank is connected to the air delivery pipe through the pressure regulating valve, and the air delivery pipe is connected to the mud discharge bin.

3. The pneumatic mud removal device for foundation pit according to claim 2, characterized in that: The mud discharge bin is provided with an air delivery port, and the air delivery pipe is connected to the air delivery port of the mud discharge bin.

4. The pneumatic mud removal device for foundation pit according to claim 1, characterized in that: It also includes a mud discharge pipe, one end of which is located outside the mud discharge bin, and the other end is connected to the mud pump, and the mud pumped by the mud pump is discharged through the mud discharge pipe.

5. The pneumatic mud removal device for foundation pit according to claim 4, characterized in that: The air delivery device includes an air delivery pipe and an inductive one-way solenoid valve. The air delivery pipe is connected to the mud discharge pipe through the inductive one-way solenoid valve and is used to deliver compressed air to the mud discharge pipe.

6. The pneumatic mud removal device for foundation pit according to claim 1, characterized in that: It also includes a lifting device, which is connected to the mud pump and is used to drive the mud pump to move up and down to adjust the height of the mud pump from the bottom of the mud discharge bin.

7. The pneumatic mud removal device for foundation pit according to claim 6, characterized in that: The lifting device includes a lifting bracket and a lifting hoist arranged on the lifting bracket, and the lifting end of the lifting hoist is connected to the mud pump.

8. The pneumatic mud removal device for foundation pit according to claim 1, characterized in that: The stirring device includes a stirring motor and a stirring blade arranged on the stirring motor.

9. The pneumatic mud removal device for foundation pit according to claim 1, characterized in that: It also includes a liquid level sensor and a control device. The liquid level sensor is arranged in the mud discharge bin and is electrically connected to the control device. The control device is electrically connected to the air transmission device, the stirring device and the mud pump respectively.

10. The pneumatic mud removal device for foundation pit according to claim 1, characterized in that: It also includes an operating area, which is connected to the mud discharge bin through a pipeline, and the mud in the operating area is transported to the mud discharge bin through the pipeline.

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