CN116180784A - Mechanical pump group integrating vacuum deep well dewatering and pumping of foundation pit - Google Patents

Mechanical pump group integrating vacuum deep well dewatering and pumping of foundation pit Download PDF

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Publication number
CN116180784A
CN116180784A CN202310274210.9A CN202310274210A CN116180784A CN 116180784 A CN116180784 A CN 116180784A CN 202310274210 A CN202310274210 A CN 202310274210A CN 116180784 A CN116180784 A CN 116180784A
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China
Prior art keywords
water
vacuum pump
pump
mechanical
cavity
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CN202310274210.9A
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Chinese (zh)
Inventor
冯克俊
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Shanghai Xingyi Construction Mechanical Equipment Co ltd
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Shanghai Xingyi Construction Mechanical Equipment Co ltd
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Priority to CN202310274210.9A priority Critical patent/CN116180784A/en
Publication of CN116180784A publication Critical patent/CN116180784A/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00—Keeping dry foundation sites or other areas in the ground
    • E02D19/06—Restraining of underground water
    • E02D19/10—Restraining of underground water by lowering level of ground water
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/22—Adaptations of pumping plants for lifting sewage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10—Adaptations or arrangements of distribution members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/123—Fluid connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • F04B49/025—Stopping, starting, unloading or idling control by means of floats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/20—Filtering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/22—Arrangements for enabling ready assembly or disassembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F1/00—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped
    • F04F1/06—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium acting on the surface of the liquid to be pumped

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Paleontology (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental & Geological Engineering (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

The invention discloses a mechanical pump set integrating dewatering and pumping of a deep vacuum well of a foundation pit, which comprises a separator body, a mechanical vacuum pump, a water pump, a vacuum pump water tank and an electric control cabinet; according to the invention, the separator body is arranged for the mechanical vacuum pump, so that water-gas separation is realized, the entry of a water-gas mixture into the mechanical vacuum pump is reduced, the mechanical abrasion is reduced, and the service life is prolonged; through the segmentation of each cavity and the setting of valve in the separator body to use the PLC programmable controller to the valve control, make the separator body possess the effect of water vapor separation, cavity segmentation and balanced conversion of pressure, the drainage of the water pump of being convenient for improves the difficult situation of current separator drainage, in order to give full play to mechanical vacuum pump pumping advantage that water efficiency is high, guarantee again that aqueous vapor separation does not influence mechanical vacuum pump's continuous operation in the drainage link.

Description

Mechanical pump group integrating vacuum deep well dewatering and pumping of foundation pit
Technical Field
The invention relates to the technical field of deep foundation pit dewatering, in particular to a mechanical pump set integrating vacuum deep well dewatering and pumping of a foundation pit.
Background
In deep foundation pit dewatering work, the vacuum pump application of vacuum deep well dewatering has the following problems: the jet vacuum pump and the mechanical vacuum pump are two most commonly used water suction pumps, and the jet vacuum pump has higher wear resistance, so that the extraction of a water-gas mixture in the process of dewatering a deep foundation pit is facilitated, and the problems are that the jet vacuum pump has small extraction quantity per unit power consumption, the circulating water heats quickly, water is easy to be lack, the vacuum degree is reduced after the water is lack, and the water pumping efficiency is low or even the water in a deep well cannot be pumped; the mechanical vacuum pump has the advantages that the pumping quantity per unit power consumption is large, the pumping gas mixture efficiency is high, but the problem is that the mechanical abrasion is extremely fast due to the fact that the water gas mixture contains gravel, the maintenance cost is extremely high, the pumping of the water gas mixture in the deep vacuum well dewatering process of a deep foundation pit is difficult to meet, if the water-gas separation device is arranged at the front end of the mechanical vacuum pump, the mechanical abrasion can be reduced, the current situation that the water drainage of the separation device is difficult in a vacuum state is caused, the mechanical vacuum pump heats and scalds, circulating water cannot be cooled in time, and the embarrassing situation that the pumping quantity is reduced and the vacuum degree is reduced when the mechanical vacuum pump continuously works is caused. How to design a mechanical pump group, fully give play to the advantage of high water pumping efficiency of a mechanical vacuum pump, and on the basis of reducing mechanical abrasion and prolonging the service life of the mechanical vacuum pump, ensure that the continuous operation of the mechanical vacuum pump is not influenced by a water-gas separation drainage link, and the method is a key point for improving the precipitation working efficiency of a deep foundation pit.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art and provides a mechanical pump set integrating dewatering and pumping of a deep vacuum well of a foundation pit, which adopts a combination of a separator body, a mechanical vacuum pump and a water pump, and the mechanical vacuum pump is provided with the separator body to separate water and gas in the separator body, so that a water-gas mixture is reduced to enter the mechanical vacuum pump, and mechanical abrasion is reduced; through the segmentation to each cavity of separator body and the setting of valve to the automatic control of application PLC programmable controller to the valve, make the separator body possess the characteristics of the water-gas separation in the cavity, pressure conversion and be convenient for the water pump discharge, improved the difficult situation of current separator drainage, with full play mechanical vacuum pump pumping water efficiency high advantage, guarantee again to accomplish the drainage link of water-gas separation under the continuous operation's of mechanical vacuum pump state, solved mechanical vacuum pump's automatic cold water circulation problem and the desilting problem in the second water storage chamber simultaneously.
The specific technical scheme for realizing the aim of the invention is as follows:
a mechanical pump group integrating vacuum deep well dewatering and pumping of a foundation pit is characterized by comprising a separator body, a mechanical vacuum pump, a water pump, a vacuum pump water tank, a cooling coil, a nozzle and an electric control cabinet;
the separator body is in a tank shape, the tank body is divided into an upper cavity and a lower cavity which are arranged up and down by a diaphragm, and the lower cavity is a second water storage cavity; the upper cavity is divided into a semi-closed water-gas separation cavity and a first water storage cavity which are arranged left and right by a vertical overflow baffle plate, and the top of the overflow baffle plate is provided with a vacuum cavity which is communicated with each other;
the tank body is provided with a vacuum pump suction port communicated with the vacuum cavity and a communicating pipe first port; the tank body is provided with a well pipe joint communicated with the water-gas separation cavity and a coil pipe inlet, and is provided with a communicating pipe second joint communicated with the second water storage cavity, a water pump joint, a nozzle seat and a coil pipe outlet;
a water-gas sinking pipe is arranged in the water-gas separation cavity, the upper port of the water-gas sinking pipe is connected with the well pipe interface, and the lower port of the water-gas sinking pipe is close to the diaphragm plate and is opened;
a two-position three-way valve is connected between the first connector of the communicating pipe and the second connector of the communicating pipe, and the other port of the two-position three-way valve is provided with an air inlet;
a water drain valve is arranged on the diaphragm plate between the second water storage cavity and the first water storage cavity;
a first floating ball switch is arranged in the second water storage cavity from bottom to top;
the mechanical vacuum pump is provided with a vacuum pump air suction port, a vacuum pump air exhaust port and a vacuum pump water inlet, and the vacuum pump air suction port is provided with a vacuum pump check valve;
the vacuum pump water tank is provided with a water tank air inlet, a water tank air outlet, a water tank water supply port and a coil pipe connector;
a second float switch is arranged in the vacuum pump water tank from bottom to top;
the water pump is provided with a water pump water suction port and a water pump water discharge port, the water pump water suction port is provided with a water pump check valve, the water pump water discharge port is provided with a four-way valve, a main channel of the four-way valve is a water discharge port, one end bypass is connected with a nozzle seat of the second water storage cavity through a first electromagnetic valve, and the other end bypass is connected with a water tank water supply port of the vacuum pump water tank through a second electromagnetic valve;
the cooling coil is arranged in the water-gas separation cavity of the separator body, one end of the cooling coil is led out from a coil inlet and connected with a coil interface of the vacuum pump water tank, and the other end of the cooling coil is led out from a coil outlet and connected with a vacuum pump water inlet of the mechanical vacuum pump through a filter screen;
the nozzle is arranged on a nozzle seat in the second water storage cavity;
the mechanical vacuum pump, the water pump and the vacuum pump water tank are arranged on the outer side of the separator body;
the vacuum pump suction port of the mechanical vacuum pump is connected with the vacuum pump suction port pipeline of the separator body, and the vacuum pump exhaust port is connected with the water tank air inlet pipeline of the vacuum pump water tank;
the water pump water suction port of the water pump is connected with the water pump interface of the separator body;
the electric control cabinet is arranged at the outer side of the separator body; the PLC programmable controller is arranged in the electric control cabinet and is electrically connected with the mechanical vacuum pump, the water drain valve, the two-position three-way valve, the first electromagnetic valve, the second electromagnetic valve, the first floating ball switch and the second floating ball switch respectively.
At least one maintenance hole is arranged on the tank body of the separator body.
A vacuum meter is arranged on the vacuum cavity of the separator body.
The bottom surface of the vacuum pump water tank is equal to the top edge of the overflow baffle plate in the separator body.
The invention has the technical effects that:
1) Separation of water and gas
The invention is provided with a water-gas separation cavity, a first water storage cavity and a second water storage cavity in the separator body; during operation, the water-gas mixture pumped by the deep well of the foundation pit enters the water-gas separation cavity through the water-gas sinking pipe, is guided to the bottom of the water-gas separation cavity through the water-gas sinking pipe and is discharged, water is deposited in the water-gas separation cavity, rises along with the water level in the water-gas separation cavity, gradually passes through the overflow partition plate, flows into the first water storage cavity, flows into the second water storage cavity through the water drain valve through the first water storage cavity, overflows from the liquid level, is pumped by the mechanical vacuum pump through the vacuum pump suction interface of the vacuum cavity, monitors the vacuum degree through the vacuum gauge, and implements water-gas separation.
2) Intermittent water discharge of water pump from separator body
In order to facilitate intermittent drainage of the water pump from the separator body and meet the aim of realizing continuous operation of the mechanical vacuum pump, a water drain valve is arranged on a diaphragm plate between the second water storage cavity and the first water storage cavity; so that the lower cavity and the upper cavity of the separator body divided by the diaphragm plate are divided into chambers with different inner cavity pressures, and the two-position three-way valve is switched to communicate with the atmosphere to pressurize the second water storage cavity, thereby realizing the change of the pressure in the second water storage cavity and facilitating the water pump to realize water drainage from the separator body.
The floating ball switch in the second water storage cavity is driven to ascend or descend by the water level, and the PLC programmable controller is triggered to work by the upper limit or the lower limit of the floating ball switch, so that the water pump can automatically and intermittently drain water from the separator body.
3) Buffering impact on water storage cavity during pressure conversion
Because the water pump realizes intermittent drainage from the separator body, the two-position three-way valve is communicated with the atmosphere, the pressure in the second water storage cavity rises, and after drainage is finished, in order to balance the pressure difference between the second water storage cavity and the first water storage cavity, the invention is beneficial to the stable operation.
4) Circulation cooling of mechanical vacuum pump
In order to overcome the defect that a mechanical vacuum pump is easy to heat and scald in continuous operation, a cooling coil is arranged in a water-gas separation cavity, one end of the cooling coil is led out from a coil inlet and connected with a coil interface of a vacuum pump water tank, the other end of the cooling coil is led out from a coil outlet and connected with a mechanical vacuum pump (a vacuum pump water inlet of the mechanical vacuum pump through a filter screen, so that cold water circulation of the mechanical vacuum pump is ensured, and the filter screen is arranged to prevent impurities from entering the mechanical vacuum pump.
5) Dredging in the second water storage cavity
In order to ensure that sludge in the second water storage cavity is not deposited when the water pump intermittently drains water from the separator body, the invention is provided with the nozzle in the second water storage cavity, and when the water pump drains water, the first electromagnetic valve communicates the four-way with the nozzle of the nozzle seat on the second water storage cavity, and the nozzle sprays water to impact water disturbance in the second water storage cavity so as to prevent sludge deposition.
6) Automatic water replenishing for water tank of vacuum pump
In order to control the liquid level of the vacuum pump water tank, the invention sets a second float switch in the vacuum pump water tank, the second float switch triggers a PLC programmable controller of the electric control cabinet to control the opening or closing of a second electromagnetic valve, when the water pump drains water, the water pump automatically supplements water to the vacuum pump water tank through the water tank water supply port.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a circuit control block diagram of the electric control cabinet of the present invention.
Description of the embodiments
Examples
The working process of the invention comprises the following steps:
referring to fig. 1 and 2, in order to facilitate drainage of the separator body 1 and to meet the purpose of continuous operation of the mechanical vacuum pump 2, a water-gas separation chamber 114, a first water storage chamber 115 and a second water storage chamber 112 are provided in the separator body 1; when the mechanical vacuum pump 2 is started, the vacuum pump check valve 24 is automatically opened, the pressure in the separator body 1 begins to be reduced, the water-gas mixture pumped by the deep well of the foundation pit enters the water-gas separation cavity 114 through the water-gas sinking pipe 161 and is guided to the bottom of the water-gas separation cavity by the water-gas sinking pipe to be discharged, water is deposited in the water-gas separation cavity 114 and gradually passes through the overflow baffle 113 along with the rise of the water level in the water-gas separation cavity 114, and flows into the first water storage cavity, and gas is pumped out from the vacuum pump suction interface 11 of the vacuum cavity 116 on the tank body by the mechanical vacuum pump 2 to realize water-gas separation; the water then flows through the drain valve 121 on the diaphragm 111 from the first reservoir 115 into the second reservoir 112 and is discharged from the second reservoir 112 by the pump 3.
Referring to fig. 1 and 2, as the water level in the second water storage chamber 112 increases, the water level drives the float switch 122 in the second water storage chamber 112 to rise, when the water level in the second water storage chamber 112 reaches a set upper limit, the float switch 122 triggers the PLC programmable controller to work at the upper limit, and sequentially closes the water drain valve 121, in order to facilitate the water pump 3 to drain, when the water is drained, the two-position three-way valve 123 is switched to a position communicated with the air inlet 151, meanwhile, the two-position three-way valve 123 closes a passage between the first interface 12 of the communicating pipe and the second interface 13 of the communicating pipe, the second water storage chamber 112 is communicated with the atmosphere, the second water storage chamber 112 begins to be pressurized, the water pump 3 is started, the water pump check valve 33 is opened by itself, when the water level in the second water storage cavity 112 reaches the set lower limit, the floating ball switch 122 triggers the PLC to work at the lower limit, the water pump 3 is stopped, the water drain valve 121 is opened, the two-position three-way valve 123 is reset and the air inlet 151 is closed, meanwhile, the first interface 12 of the communicating pipe is communicated with the second interface 13 of the communicating pipe, water is continuously stored in the first water storage cavity 115 during the water draining of the second water storage cavity 112, the mechanical vacuum pump 2 is always in a continuous normal working state, and the reciprocating cycle is performed in such a way, and the water-air separation and intermittent water draining processes of the water pump 3 are completed under the continuous working state of the mechanical vacuum pump 2, so that the advantage of high water pumping efficiency of the mechanical vacuum pump 2 is fully exerted.
Referring to fig. 1, a water vapor sinking pipe 161 of the present invention is connected with a pumping pipe of a deep well of a foundation pit; the water is supplied to the vacuum pump water inlet 23 of the mechanical vacuum pump 2 through the cooling coil 5 by the coil pipe connector 44 of the vacuum pump water tank 4;
referring to fig. 1 and 2, the working process of the invention is controlled by a PLC programmable controller of an electric control cabinet 7, and the PLC programmable controller is used for controlling the mechanical vacuum pump 2, the water pump 3, the water drain valve 121, the two-position three-way valve 123, the first solenoid valve 312, the second solenoid valve 311, the first float switch 122 and the second float switch 45 respectively, so as to implement the purposes of water-gas separation and intermittent drainage of the water pump 3 under the continuous working state of the mechanical vacuum pump 2, thereby fully playing the advantage of high pumping efficiency of the mechanical vacuum pump 2.
Referring to fig. 1, in order to overcome the defect that the mechanical vacuum pump is easy to generate heat and scald in continuous operation, the invention adopts the following measures when the water tank 4 of the vacuum pump supplies water to the mechanical vacuum pump 2:
the cooling coil 5 is arranged between the vacuum pump water tank 4 and the vacuum pump water inlet 23 of the mechanical vacuum pump 2, and in order to keep the cooling coil 5 cool, the cooling coil 5 is arranged in the water-gas separation cavity 114, and the cooling coil 5 is cooled by the water in the water-gas separation cavity 114, so that the heat of the mechanical vacuum pump 2 is reduced, and the mechanical vacuum pump 2 is ensured to work in a cold water circulation environment;
in order to prevent impurities from entering the mechanical vacuum pump 2, a filter screen 25 is arranged in front of a vacuum pump water inlet 23 of the mechanical vacuum pump 2;
in order to ensure the height difference between the liquid level of the vacuum pump water tank 4 and the mechanical vacuum pump 2, the invention sets the lifting position of the vacuum pump water tank 4, namely the bottom surface of the vacuum pump water tank 4 is equal to the top edge of the overflow baffle 113 in the separator body 1, and water in the vacuum pump water tank 4 automatically flows into the mechanical vacuum pump 2 through the vacuum pump water inlet 23 by the pressure difference of the liquid level;
in order to control the liquid level of the vacuum pump water tank 4, a second float switch 45 is arranged in the vacuum pump water tank 4, a PLC programmable controller of the electric control cabinet 7 is triggered by the second float switch 45, the second electromagnetic valve 311 is controlled to be opened or closed, and water is supplied to the vacuum pump water tank 4 by the water pump 3 through a water tank water supply port 43.
Referring to fig. 1, in order to ensure that sludge in the second water storage cavity 112 is not deposited when the water pump 3 realizes intermittent drainage from the separator body, the invention arranges the nozzle 6 in the second water storage cavity 112, the nozzle 6 is arranged on the nozzle seat 18 in the second water storage cavity 112, the bypass of the four-way valve 34 on the water pump drainage outlet 32 is connected with the nozzle seat 18 of the second water storage cavity 112 through the first electromagnetic valve 312, when the water pump drains water, the first electromagnetic valve 312 communicates the four-way valve 34 with the nozzle 6 of the nozzle seat 18 on the second water storage cavity 112, and water of the water pump 3 is shunted by the four-way valve 34 and sprayed out by the nozzle 6 to impact the water disturbance in the second water storage cavity 112 so as to prevent sludge deposition.
Referring to fig. 1, in order to increase the opening speed of the valve, the two-position three-way valve 123 and the drain valve 121 of the present invention are solenoid valves or pneumatic valves.

Claims (4)

1. The mechanical pump group integrated with the deep vacuum well dewatering and pumping and draining of the foundation pit is characterized by comprising a separator body (1), a mechanical vacuum pump (2), a water pump (3), a vacuum pump water tank (4), a cooling coil (5), a nozzle (6) and an electric control cabinet (7);
the separator body (1) is in a tank shape, the tank body is divided into an upper cavity and a lower cavity which are arranged up and down by a diaphragm (111), and the lower cavity is a second water storage cavity (112); the upper cavity is divided into a semi-closed water-gas separation cavity (114) and a first water storage cavity (115) which are arranged left and right by a vertical overflow baffle plate (113), and the top of the overflow baffle plate (113) is provided with a vacuum cavity (116) which is communicated with each other;
the tank body is provided with a vacuum pump air suction interface (11) communicated with the vacuum cavity (116) and a communicating pipe first interface (12); the tank body is provided with a well pipe joint (16) and a coil pipe inlet (15) which are communicated with the water-gas separation cavity (114), and is provided with a communicating pipe second joint (13), a water pump joint (14), a nozzle seat 18 and a coil pipe outlet (17) which are communicated with the second water storage cavity (112);
a water vapor sinking pipe (161) is arranged in the water vapor separation cavity (114), the upper opening of the water vapor sinking pipe (161) is connected with the well pipe connector (16), and the lower opening of the water vapor sinking pipe (161) is close to the diaphragm plate (111) and is open;
a two-position three-way valve (123) is connected between the first communicating pipe interface (12) and the second communicating pipe interface (13), and an air inlet (151) is arranged on the other port of the two-position three-way valve (123);
a water drain valve (121) is arranged on the diaphragm (111) between the second water storage cavity (112) and the first water storage cavity (115);
a first float switch (122) is arranged in the second water storage cavity (112) from bottom to top;
the mechanical vacuum pump (2) is provided with a vacuum pump suction port (21), a vacuum pump exhaust port (22) and a vacuum pump water inlet (23), and the vacuum pump suction port (21) is provided with a vacuum pump check valve (24);
the vacuum pump water tank (4) is provided with a water tank air inlet (41), a water tank air outlet (42), a water tank water supply port (43) and a coil pipe connector (44);
a second float switch (45) is arranged in the vacuum pump water tank (4) from bottom to top;
the water pump (3) is provided with a water pump water suction port (31) and a water pump water discharge port (32), the water pump water suction port (31) is provided with a water pump check valve (33), the water pump water discharge port (32) is provided with a four-way valve (34), wherein a main channel of the four-way valve (34) is a water discharge port, one end of the water pump is connected with a nozzle seat (18) of a second water storage cavity (112) through a first electromagnetic valve (312), and the other end of the water pump is connected with a water tank water supply port (43) of a vacuum pump water tank (4) through a second electromagnetic valve (311);
the cooling coil (5) is arranged in a water-gas separation cavity (114) of the separator body (1), one end of the cooling coil (5) is led out from a coil inlet (15) and is connected with a coil interface (44) of the vacuum pump water tank (4), and the other end of the cooling coil (5) is led out from a coil outlet (17) and is connected with a vacuum pump water inlet (23) of the mechanical vacuum pump (2) through a filter screen 25;
the nozzle (6) is arranged on a nozzle seat (18) in the second water storage cavity (112);
the mechanical vacuum pump (2), the water pump (3) and the vacuum pump water tank (4) are arranged on the outer side of the separator body (1);
the vacuum pump suction port (21) of the mechanical vacuum pump (2) is connected with the vacuum pump suction port (11) of the separator body (1) through a pipeline, and the vacuum pump exhaust port (22) is connected with the water tank air inlet (41) of the vacuum pump water tank (4) through a pipeline;
the water pump water suction port (31) of the water pump (3) is connected with the water pump interface (14) of the separator body (1);
the electric control cabinet (7) is arranged at the outer side of the separator body (1); a PLC programmable controller is arranged in the electric control cabinet (7), and is electrically connected with the mechanical vacuum pump (2), the water pump (3), the water drain valve (121), the two-position three-way valve (123), the first electromagnetic valve 312, the second electromagnetic valve 311, the first floating ball switch (122) and the second floating ball switch (45) respectively.
2. A mechanical pump group integrated with vacuum deep well dewatering and pumping of foundation pit according to claim 1, wherein at least one maintenance hole is arranged on the tank body of the separator body (1).
3. The mechanical pump group integrated with the dewatering and drainage of the deep vacuum well of the foundation pit according to claim 1, wherein a vacuum meter is arranged on a vacuum cavity (116) of the separator body (1).
4. The mechanical pump group integrated with the dewatering and pumping of the deep vacuum well of the foundation pit according to claim 1 is characterized in that the bottom surface of the vacuum pump water tank (4) is equal to the top edge of the overflow baffle plate (113) in the separator body (1).
CN202310274210.9A 2023-03-21 2023-03-21 Mechanical pump group integrating vacuum deep well dewatering and pumping of foundation pit Pending CN116180784A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310274210.9A CN116180784A (en) 2023-03-21 2023-03-21 Mechanical pump group integrating vacuum deep well dewatering and pumping of foundation pit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310274210.9A CN116180784A (en) 2023-03-21 2023-03-21 Mechanical pump group integrating vacuum deep well dewatering and pumping of foundation pit

Publications (1)

Publication Number Publication Date
CN116180784A true CN116180784A (en) 2023-05-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310274210.9A Pending CN116180784A (en) 2023-03-21 2023-03-21 Mechanical pump group integrating vacuum deep well dewatering and pumping of foundation pit

Country Status (1)

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CN (1) CN116180784A (en)

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