CN114483093A - Large ground grouting pump station system and control method - Google Patents

Large ground grouting pump station system and control method Download PDF

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Publication number
CN114483093A
CN114483093A CN202111507333.XA CN202111507333A CN114483093A CN 114483093 A CN114483093 A CN 114483093A CN 202111507333 A CN202111507333 A CN 202111507333A CN 114483093 A CN114483093 A CN 114483093A
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CN
China
Prior art keywords
cement
pump
water
storage cylinder
grouting pump
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Pending
Application number
CN202111507333.XA
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Chinese (zh)
Inventor
颜威合
李博
张守金
詹东阳
孙庆润
刘传超
姚强
蔡青峰
张效瑞
刘凯飞
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Henan Coal Science Research Institute Keming Electromechanical Equipment Co ltd
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Henan Coal Science Research Institute Keming Electromechanical Equipment Co ltd
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Priority to CN202111507333.XA priority Critical patent/CN114483093A/en
Publication of CN114483093A publication Critical patent/CN114483093A/en
Pending legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04—Lining with building materials
    • E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
    • E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/02—Controlling the operation of the mixing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/0404—Proportioning
    • B28C7/0418—Proportioning control systems therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/12—Supplying or proportioning liquid ingredients
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/12—Supplying or proportioning liquid ingredients
    • B28C7/126—Supply means, e.g. nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/16—Discharge means, e.g. with intermediate storage of fresh concrete
    • B28C7/162—Discharge means, e.g. with intermediate storage of fresh concrete by means of conveyors, other than those comprising skips or containers, e.g. endless belts, screws, air under pressure
    • B28C7/163—Discharge means, e.g. with intermediate storage of fresh concrete by means of conveyors, other than those comprising skips or containers, e.g. endless belts, screws, air under pressure using a pump
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C9/00—General arrangement or layout of plant
    • B28C9/02—General arrangement or layout of plant for producing mixtures of clay or cement with other materials
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires

Abstract

The invention relates to a large-scale ground grouting pump station system, which comprises a grouting pump station, wherein the grouting pump station comprises: the water tank is internally provided with a water pump and a first liquid level meter; a cement storage tank for storing cement; a cement quantitative adding machine communicated with the cement storage tank; the ejector is respectively communicated with the cement quantitative adding machine and the water pump; the ejector, the first cement slurry storage cylinder and the second cement slurry storage cylinder are sequentially communicated, and a liquid level meter II and a densimeter are arranged in the second cement slurry storage cylinder; the grouting pump is communicated with the cement slurry storage cylinder II; the mixer is communicated with the grouting pump, a slurry outlet of the mixer is also communicated with a high-pressure slurry conveying pipeline, and a pressure sensor is arranged on the high-pressure slurry conveying pipeline; and the control cabinet is used for controlling the electric equipment. The invention also relates to a control method of the large-scale ground grouting pump station system. The large ground grouting pump station realizes automatic operation, realizes full automation of pulping, improves pulping efficiency, and can be popularized and applied.

Description

Large ground grouting pump station system and control method
Technical Field
The invention relates to the technical field of pulping equipment, in particular to a large-scale ground grouting pump station system and a control method.
Background
The method of grouting and the like for geologic body transformation is an active method for maintaining stability of a roadway, and the grouting has good sealing performance, so that the method becomes a key means for controlling roadway deformation and water plugging and controlling.
The underground grouting of the coal mine is applied more and mainly used for grouting reinforcement, grouting water plugging, grouting fire prevention and extinguishment, hole sealing in gas drainage and the like. According to the grouting flow, pressure and arrangement place, the system is divided into a large grouting pump station positioned on the ground and a small grouting pump station arranged in an underground coal mine roadway.
For the occasions with small grouting flow, a small-sized grouting machine, even a manual stirring grouting machine and a grouting pump are mostly adopted, and the grouting operation is carried out on a connecting pipeline after the grouting machine arrives at the site. The large grouting pump station on the ground is mainly suitable for being transported to the underground of a coal mine in a long distance through a pipeline when a large amount of cement paste is needed, and the requirements on the grouting pump station are high flow and high pressure.
However, the existing grouting pump station in China generally depends on manual operation, and has the problems of low automation degree, low operation efficiency, high labor intensity, high dust concentration in an operation site, poor water-cement ratio control precision, insufficient safety protection means and the like. For example, the application publication No. CN109352829A discloses a grouting system for mine and a construction process, the grouting system is built on the ground, the construction work amount is large, and the mine car is adopted to perform back and forth soil borrowing operation, so that the labor intensity is high.
Disclosure of Invention
The invention provides a large-scale ground grouting pump station system and a control method thereof, aiming at solving the problems of high labor intensity and low automation degree of the existing grouting pump station, and the system and the control method can realize automatic grouting operation.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a large-scale ground slip casting pump station system, is including laying the slip casting pump station on ground, the slip casting pump station includes:
the water tank is used for containing water, a water pump and a first liquid level meter are arranged in the water tank, the water pump pumps water, and the first liquid level meter monitors the water level;
the device comprises a cement storage tank, a feeding screw machine and a feeding screw machine, wherein the cement storage tank is used for storing powdery cement, and one side of the cement storage tank is hermetically communicated with the feeding screw machine and is used for conveying cement into the cement storage tank;
the cement quantitative adding machine is communicated with the cement storage tank in a sealing way;
the ejector is used for mixing water and powdery cement, and inlets at two ends of the ejector are respectively communicated with the cement quantitative adding machine and the water pump;
the jet device comprises a first cement slurry storage cylinder, a second cement slurry storage cylinder, an ejector outlet, a first cement slurry storage cylinder and a second cement slurry storage cylinder, wherein the first cement slurry storage cylinder and the second cement slurry storage cylinder are sequentially communicated;
the grouting pump is used for pumping cement slurry, and is communicated with the second cement slurry storage cylinder, and a flow meter is arranged between the grouting pump and the second cement slurry storage cylinder;
the mixer is communicated with the grouting pump, a pressure gauge is arranged at a slurry outlet of the mixer, the slurry outlet of the mixer is also communicated with a high-pressure slurry conveying pipeline, and a pressure sensor is arranged on the high-pressure slurry conveying pipeline;
the control cabinet is respectively and electrically connected with the water pump, the first liquid level meter, the feeding screw machine, the cement quantitative adding machine, the first cement slurry storage cylinder, the second liquid level meter, the densimeter, the grouting pump, the flowmeter and the pressure sensor, and the control cabinet is used for centralized control of all electric equipment.
Furthermore, the water pump comprises a pump body and a water pump motor for driving the pump body, the pump body and the water pump motor are respectively arranged inside and outside the water tank, a water suction port of the pump body is positioned at the bottom of the water tank, and a water discharge port of the pump body is positioned at the upper part of the water tank; the water pump motor is electrically connected with the control cabinet, and the water pump motor can pump out water in operation.
Furthermore, the cement storage tank comprises a tank body and tank legs which are annularly arranged on the peripheral side of the tank body, and one side of the cement storage tank is also provided with an overhauling crawling ladder, so that the storage tank is convenient for personnel to overhaul and maintain;
the feeding screw machine is obliquely arranged and comprises a feeding screw assembly, a cement hopper, a feeding screw motor and a discharge opening, and the discharge opening is communicated with the top of the tank body and provided with a feeding sealing dust cover for sealing.
Further, the cement quantitative adding machine is positioned below the cement storage tank and comprises an adding screw, an adding motor for driving the adding screw, an adding hopper communicated with the adding screw and an adding outlet; the adding screw is a shaftless screw, the cement storage tank and the adding hopper are communicated, and a blanking sealing dustproof cover is arranged between the cement storage tank and the adding hopper for sealing.
Further, the ejector is positioned below the cement quantitative adding machine and comprises a water absorption section, a mud absorption section and a slurry outlet section; the water suction section is communicated with the water pump through a first pipeline, the sludge suction section is communicated with the adding outlet, a jet flow sealing dust cover is arranged between the sludge suction section and the adding outlet for sealing, and a second pipeline is arranged between the slurry outlet section and the first cement slurry storage cylinder for communicating.
Furthermore, the first cement slurry storage cylinder and the second cement slurry storage cylinder both comprise a slurry storage cylinder body and a stirring assembly, the stirring assembly comprises a stirring motor, a stirring shaft, stirring blades and turbulence rods arranged on the inner wall of the slurry storage cylinder body, and the turbulence rods and the stirring blades are arranged in a vertically staggered manner, so that the stirring effect can be improved; and a connecting pipe is arranged between the first cement slurry storage cylinder and the second cement slurry storage cylinder to communicate.
Furthermore, the grouting pump is a hydraulic double-liquid grouting pump, a third pipeline is arranged between a grout suction port of the grouting pump and the second cement slurry storage barrel to be communicated, and the flowmeter is arranged on the third pipeline; and a pipeline IV is arranged between the grouting pump slurry outlet and the mixer slurry inlet and is communicated with the mixer slurry inlet.
A control method for a large ground grouting pump station system comprises the following steps:
step 1: manually starting a control cabinet, wherein the control cabinet firstly controls a first cement paste storage cylinder and a second cement paste storage cylinder to start;
step 2: the first liquid level meter monitors whether the water level in the water tank reaches a set target, and if the water level reaches the set target, the water pump is started and the frequency is set, the quantitative cement adding machine is started in a delayed mode and the frequency is set;
the first liquid level meter monitors whether the water level in the water tank reaches a lower limit, if the water level does not reach the lower limit, the water pump and the cement quantitative adding machine are continuously operated, and if the water level reaches the lower limit, the water pump and the cement quantitative adding machine are stopped;
and step 3: the second liquid level meter monitors whether the liquid level of the cement paste reaches a set height, if the liquid level does not reach the set height, the water pump and the cement quantitative adding machine are continuously operated, and if the liquid level reaches the set height, the grouting pump is started and the frequency is set;
the second liquid level meter monitors whether the liquid level of the cement paste reaches an upper limit and a lower limit, if the liquid level of the cement paste is higher than the upper limit, the water pump and the cement quantitative adding machine are stopped, and if the liquid level of the cement paste is lower than the lower limit, the frequency of a grouting pump is reduced;
and 4, step 4: the densimeter monitors whether the density of the cement slurry is lower than a set value, if the density of the cement slurry is lower than the set value, the frequency of a water pump is reduced, if the density of the cement slurry is higher than the set value, the frequency of a cement quantitative adding machine is reduced,
and 5: the pressure sensor monitors whether the pressure of the high-pressure slurry conveying pipeline is higher than a set value or not, if the pressure of the high-pressure slurry conveying pipeline is lower than the set value, the grouting pump is continuously operated, and if the pressure of the high-pressure slurry conveying pipeline is higher than the set value, the grouting pump, the cement quantitative adding machine and the water pump are stopped;
step 6: and (3) manually judging whether grouting is continued or not, if so, manually starting the control cabinet again, repeating the steps 1-5, if not, starting the grouting pump to evacuate the cement slurry, starting the water pump to clean after evacuation is finished, and stopping the water pump, the grouting pump, the first cement slurry storage cylinder and the second cement slurry storage cylinder after cleaning is finished to finish grouting operation.
Through the technical scheme, the invention has the beneficial effects that:
the automatic feeding device has reasonable structural design, can realize automatic water feeding, automatic quantitative powder cement feeding, automatic suction of the powder cement through the Venturi effect of the ejector, mixing of the powder cement and water to prepare cement slurry, feeding the cement slurry into the first cement slurry storage cylinder and the second cement slurry storage cylinder, automatic stirring and precipitation prevention through the stirring assembly, and finally, long-distance conveying of the slurry through the high-pressure grouting pump.
The automatic water feeding and quantitative powder cement feeding device is matched with the electronic densimeter to realize automatic adjustment and accurate control of the slurry concentration. The powdery cement enters the jet device through the negative pressure suction inlet of the jet device, and the pollution caused by dust discharge is thoroughly avoided. The addition screw of the cement quantitative adding machine adopts a shaftless screw, so that the cement bonding can be effectively reduced. The feeding sealing dust cover, the discharging sealing dust cover and the jet flow sealing dust cover can effectively prevent the environmental pollution possibly caused by the leakage of cement dust in the working process.
The invention realizes the functions of automatic concentration adjustment, automatic process control and automatic overpressure shutdown protection in the whole pulping and grouting process through the mutual matching of a plurality of liquid level meters, pressure sensors, electromagnetic flow meters, control cabinets and the like, forms a set of large-scale ground grouting pump station capable of realizing automatic operation, realizes the full automation of pulping, reduces the labor intensity of workers, improves the pulping efficiency and has good application and popularization values.
Drawings
Fig. 1 is a schematic overall structure diagram of a large ground grouting pump station system.
FIG. 2 is a schematic diagram of a water tank structure of a large ground grouting pump station system according to the invention.
Fig. 3 is a schematic structural diagram of a cement storage tank of a large ground grouting pump station system.
FIG. 4 is a schematic diagram of a cement quantitative adding machine of the large-scale ground grouting pump station system.
Fig. 5 is a schematic diagram of a first cement slurry storage cylinder and a second cement slurry storage cylinder of the large-scale ground grouting pump station system.
FIG. 6 is a schematic view of a grouting pump of a large-scale ground grouting pump station system of the present invention.
Fig. 7 is a flow chart of the operation of the large ground grouting pump station system of the invention.
The reference numbers in the drawings are as follows: 1 is a water tank, 2 is a cement storage tank, 201 is a tank body, 202 is a tank foot, 3 is a cement quantitative adding machine, 31 is an adding screw, 32 is an adding motor, 33 is an adding hopper, 34 is an adding outlet, 4 is an ejector, 41 is a water suction section, 42 is a mud suction section, 43 is a mud discharge section, 5 is a cement slurry storage cylinder I, 6 is a cement slurry storage cylinder II, 7 is a grouting pump, 8 is a mixer, 9 is a control cabinet, 10 is a water pump, 101 is a pump body, 102 is a water pump motor, 11 is a liquid level meter I, 12 is a vibration motor, 13 is a feeding screw, 131 is a feeding screw assembly, 132 is a cement hopper, 133 is a feeding screw motor, 134 is a discharge port, 14 is a feeding sealing dust cover, 15 is an overhauling ladder, 16 is a blanking sealing, 17 is a support, 18 is a pipeline I, 19 is a jet sealing, 20 is a pipeline II, 21 is a dust cover, 22 is a connecting pipe III, 23 is a slurry storage cylinder, 24 is a stirring assembly, 241 is a stirring motor, 242 is a stirring shaft, 243 is a stirring blade, 244 is a turbulence rod, 25 is a liquid level meter II, 26 is a densimeter, 27 is a flowmeter, 28 is a pressure gauge, 29 is a high-pressure slurry conveying pipeline, 30 is a pressure sensor, and 40 is a pipeline IV.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings in which:
as shown in fig. 1-7, a large-scale ground grouting pump station system comprises a grouting pump station arranged on the ground, wherein the grouting pump station comprises a water tank 1, a cement storage tank 2, a cement quantitative adding machine 3, a jet device 4, a first cement slurry storage cylinder 5, a second cement slurry storage cylinder 6, a grouting pump 7, a mixer 8 and a control cabinet 9.
The water tank 1 is used for containing water for pulping, a water pump 10 is arranged in the water tank 1, and the water pump 10 is electrically connected with the control cabinet 9. The water pump 10 comprises a pump body 101 and a water pump motor 102 for driving the pump body 101, wherein the pump body 101 and the water pump motor 102 are respectively arranged on the inner side and the outer side of the water tank 1.
The water suction port of the pump body 101 is positioned at the bottom of the water tank 1, and the water discharge port of the pump body 101 is positioned at the upper part of the water tank 1. The water pump motor 102 of the water pump 10 is electrically connected with the control cabinet 9, and the control cabinet 9 controls the start and stop of the water pump motor 102 to further control the water outlet of the water tank 1.
In order to monitor the liquid level in the water tank 1 in time, a first liquid level meter 11 is further arranged in the water tank 1, and the first liquid level meter 11 is electrically connected with the control cabinet 9, so that the liquid level data of the water tank 1 are sent to the control cabinet 9.
The cement storage tank 2 is used for storing cement ash, the cement storage tank 2 comprises a tank body 201 and tank legs 202 which are circumferentially arranged on the tank body 201, the tank body 201 is higher than the ground, and a larger space exists between the tank body and the ground.
Jar body 201 top is the toper for the discharge gate for feed inlet, below, be provided with vibrating motor 12 on the discharge gate lateral wall, vibrating motor 12 is connected with switch board 9, and vibrating motor 12 can make things convenient for the unloading of cement ash.
In order to convey cement ash into the tank body 201 conveniently, a feeding screw 13 is hermetically communicated with one side of the cement storage tank 2, the feeding screw 13 is electrically connected with the control cabinet 9, and the cement ash can be conveyed into the tank body 201 through the feeding screw 13.
Specifically, the feeding screw 13 is obliquely arranged, and the feeding screw 13 includes a feeding screw assembly 131, a cement hopper 132, a feeding screw motor 133 and a discharge port 134. The lower part of the feeding spiral assembly 131 is communicated with the cement hopper 132, the cement hopper 132 is close to the ground, the upper part of the feeding spiral assembly 131 is communicated with the discharge port 134, and the discharge port 134 is communicated with the top of the tank body 201.
The feeding screw motor 133 is further arranged above the feeding screw assembly 131, the feeding screw motor 133 of the feeding screw 13 is connected with a speed reducer, the feeding screw motor 133 is electrically connected with the control cabinet 9, the feeding screw motor 133 is controlled by the control cabinet 9 to drive the feeding screw assembly 131, and then cement ash can be conveyed from the cement hopper 132 to the discharge opening 134 and stored in the tank body 201.
In order to avoid the leakage of dust when the discharge port 134 discharges dust, a feeding sealing dust cover 14 is arranged between the tank body 201 and the discharge port 134, and the feeding sealing dust cover 14 can prevent the dust leakage from causing environmental pollution when the feeding screw 13 conveys cement dust into the tank body 201.
In order to facilitate the maintenance of the tank body 201, one side of the cement storage tank 2 is also provided with a maintenance crawling ladder 15, and the maintenance crawling ladder 15 extends to the upper side of the tank body 201 from the ground.
The cement quantitative adding machine 3 is positioned below the tank body 201, and the cement quantitative adding machine 3 is communicated with the cement storage tank 2 in a sealing mode. The cement quantitative adding machine 3 is electrically connected with the control cabinet 9, so as to control the quantitative blanking of the cement ash in the tank body 201.
The cement quantitative adding machine 3 comprises an adding screw 31, an adding motor 32 for driving the adding screw 31, an adding hopper 33 communicated with the adding screw 31 and an adding outlet 34. The adding motor 32 of the cement quantitative adding machine 3 is connected with a speed reducer, the adding motor 32 is electrically connected with the control cabinet 9, the control cabinet 9 controls the adding motor 32 to be started and stopped, so that cement ash can be conveyed to the adding outlet 34 from the adding hopper 33, and the adding screw 31 is a shaftless screw.
The tank 201 of the cement storage tank 2 is communicated with the additive hopper 33, so that cement ash in the tank 201 can fall into the cement quantitative adding machine 3. In order to avoid the leakage of dust during the ash discharge of the tank 201, a blanking sealing dust cover 16 is arranged between the lower part of the tank 201 and the adding hopper 33, and the blanking sealing dust cover 16 can prevent the leakage of dust from causing environmental pollution when the tank 201 conveys cement ash into the adding hopper 33.
When the cement quantitative adding machine 3 is installed, the bottom of the cement quantitative adding machine is also provided with a support 17, the support 17 is used for supporting the cement quantitative adding machine 3, and then the cement quantitative adding machine 3 is at a certain height from the ground.
The ejector 4 mixes water and cement ash, and the ejector 4 is located cement ration interpolation machine 3 below, 4 both ends entrances of ejector communicate cement ration interpolation machine 3 and water pump 10 respectively.
The ejector 4 comprises a water suction section 41, a sludge suction section 42 and a slurry outlet section 43. The first pipeline 18 is arranged between the water suction section 41 and the water pump 10 to be communicated, the sludge suction section 42 is communicated with the adding outlet 34, and a jet flow sealing dust cover 19 is arranged between the sludge suction section and the adding outlet to seal, so that the environment pollution caused by dust leakage when the cement quantitative adding machine 3 conveys cement ash into the jet ejector 4 can be prevented through the jet flow sealing dust cover 19.
The first cement slurry storage cylinder 5 and the second cement slurry storage cylinder 6 are used for stirring and storing the slurry, and the outlet of the ejector 4, the first cement slurry storage cylinder 5 and the second cement slurry storage cylinder 6 are sequentially communicated. Specifically, a second pipeline 20 is arranged between the grout outlet section 43 of the ejector 4 and the first grout storage cylinder 5 for communication, and a connecting pipe 21 is arranged between the bottoms of the first grout storage cylinder 5 and the second grout storage cylinder 6 for communication.
The first cement slurry storage cylinder 5 and the second cement slurry storage cylinder 6 are both electrically connected with the control cabinet 9, and the control cabinet 9 is further used for controlling operation. The first cement slurry storage cylinder 5 and the second cement slurry storage cylinder 6 both comprise a slurry storage cylinder body 23 and a stirring assembly 24.
The stirring assembly 24 comprises a stirring motor 241, a stirring shaft 242, stirring blades 243 and a turbulence bar 244 arranged on the inner wall of the slurry storage barrel 23, wherein the stirring motor 241 is electrically connected with the control cabinet 9, and further the operation of the stirring assembly 24 is controlled.
The stirring motor 241 is connected with a speed reducer, the stirring motor 241 is connected with the stirring shaft 242, the stirring shaft 242 extends into the slurry storage barrel 23, the stirring shaft 242 is provided with a plurality of layers of stirring blades 243, and the turbulence bars 244 and the stirring blades 243 are vertically arranged in a staggered manner, so that a good stirring effect can be achieved.
In order to timely monitor the slurry condition, a second liquid level meter 25 and a densimeter 26 are arranged in the second cement slurry storage cylinder 6, and the second liquid level meter 25 and the densimeter 26 are both electrically connected with the control cabinet 9. The second liquid level meter 25 is used for monitoring the liquid level of the second cement slurry storage cylinder 6, and the density meter 26 is used for monitoring the density of the second cement slurry storage cylinder 6 and sending the liquid level data and the density data to the control cabinet 9.
The grouting pump 7 is a hydraulic double-liquid grouting pump, a mechanical grouting pump or a pneumatic grouting pump can be adopted, the grouting pump 7 is electrically connected with the control cabinet 9, the motor of the grouting pump 7 is controlled to run, the motor used by the water pump motor 102, the adding motor 32 and the grouting pump 7 is a variable frequency motor, and the slurry is pressurized and output through the grouting pump 7.
The utility model discloses a grouting pump, including grouting pump 7, grout storage cylinder two 6, pipeline three 22 is provided with between and flowmeter 27 between the grout storage cylinder two 6, and is concrete, and grouting pump 7 inhale thick liquid mouth and grout storage cylinder two 6 between be provided with pipeline three 22 in order to communicate, lay on the pipeline three 22 flowmeter 27, flowmeter 27 are used for the monitoring to carry to the volume of grout in grouting pump 7, and flowmeter 27 is connected with switch board 9 electricity, and flowmeter 27 realizes the instantaneous measurement and the accumulative total measurement of slip casting flow.
The blender 8 communicates with grouting pump 7, promptly 7 grout outlet of grouting pump with be provided with pipeline four 40 in order to communicate between the blender 8 grout inlet. The slurry outlet of the mixer 8 is provided with a pressure gauge 28, and the pressure gauge 28 can visually display the slurry outlet pressure.
The slurry outlet of the mixer 8 is also communicated with a high-pressure slurry conveying pipeline 29, a pressure sensor 30 is arranged on the high-pressure slurry conveying pipeline 29, the pressure sensor 30 is used for monitoring pressure signals in the high-pressure slurry conveying pipeline 29, and the pressure sensor 30 is electrically connected with the control cabinet 9.
The control cabinet 9 comprises a frequency converter, a grouting recorder, an automatic stirring and monitoring control panel, a motor comprehensive protector, an alternating current contactor, a circuit breaker, an intermediate relay, a start button, a stop button, an emergency stop and an alarm device.
When the grouting pump station system is applied, the cement storage tank 2 is filled with the powdery cement in advance through the feeding screw machine 13, and the adding hopper 33 of the cement quantitative adding machine 3 is filled with the powdery cement; meanwhile, water is added into the water tank 1, water contained in the water tank 1 can be filled in a building mode of digging a pit on the ground, the water is pumped into the water suction section 41 of the ejector 4 by the water pump 10 through the first pipeline 18, and in the process that the water flows to the slurry outlet section 43 of the ejector 4, powdery cement is sucked and mixed with the water to form cement slurry, and the cement slurry enters the first cement slurry storage cylinder 5 through the second pipeline 20. The first cement slurry storage cylinder 5 is communicated with the second cement slurry storage cylinder 6, and the first cement slurry storage cylinder 5 and the second cement slurry storage cylinder 6 can store cement slurry and can also be realized in a building form of digging a pit on the ground. The high-pressure grouting pump 7 sucks in cement slurry through a third pipeline 22, and the cement slurry is pressurized by the high-pressure grouting pump 7 and then is conveyed remotely through a fourth pipeline 40, the mixer 8 and the high-pressure slurry conveying pipeline 29.
A control method for a large ground grouting pump station system comprises the following steps:
step 1: the control cabinet 9 is manually started, the grouting pump station system starts to operate, the control cabinet 9 firstly controls the first cement slurry storage cylinder 5 and the second cement slurry storage cylinder 6 to start, and then the two stirring assemblies 24 start to operate to respectively stir cement slurries in the first cement slurry storage cylinder 5 and the second cement slurry storage cylinder 6.
Step 2: the first liquid level meter 11 monitors whether the water level in the water tank 1 reaches a set target or not, if the water level reaches the set target, the control cabinet 9 controls the water pump 10 to be started and sets the operating frequency of the water pump 10, and the cement quantitative adding machine 3 is started in a delayed mode and sets the operating frequency.
The water pump 10 operates to pump the water in the water tank 1 into the ejector 4 through the first pipeline 18, the cement quantitative adding machine 3 operates to convey the powdery cement in the tank body 201 into the ejector 4, the water and the powdery cement are mixed to form cement paste, and the cement paste is conveyed into the first cement paste storage cylinder 5 through the second pipeline 20.
The first liquid level meter 11 monitors whether the water level in the water tank 1 reaches a lower limit or not, if the water level reaches the lower limit, the water pump 10 and the cement quantitative adding machine 3 are continuously operated, then cement slurry is continuously produced, and if the water level reaches the lower limit, the water pump 10 and the cement quantitative adding machine 3 are stopped to operate, and the water tank 1 needs to be restarted after water sources are supplemented.
And step 3: and the second liquid level meter 25 monitors whether the liquid level of the cement paste in the second cement paste storage cylinder 6 reaches a set height, if the liquid level does not reach the set height, the water pump 10 and the cement quantitative adding machine 3 are continuously operated, so that the cement paste is continuously added into the second cement paste storage cylinder 6, and if the liquid level reaches the set height, the grouting pump 7 is started and the operation frequency is set, the cement paste is pumped.
The second liquid level meter 25 monitors whether the liquid level of the cement paste in the second cement paste storage cylinder 6 reaches an upper limit and a lower limit, and if the liquid level is higher than the upper limit, the water pump 10 and the cement quantitative adding machine 3 are stopped, no cement paste is added into the second cement paste storage cylinder 6; if the lower limit is lower than the lower limit, the running frequency of the grouting pump 7 is reduced, namely the rotating speed of the grouting pump 7 is reduced, and the pumping flow rate of the cement slurry is further reduced.
And 4, step 4: the densimeter 26 regularly monitors whether the density of the cement slurry in the second cement slurry storage cylinder 6 is lower than a set value or not, and if the density of the cement slurry is lower than the set value and the frequency of the water pump 10 is reduced, the rotating speed of the water pump motor 102 is reduced, so that the specific gravity of water is reduced; if the frequency of the cement quantitative adding machine 3 is higher than the set value, the rotating speed of the adding motor 32 is reduced, so that the specific gravity of the cement is reduced.
And 5: the pressure sensor 30 monitors whether the pressure of the high-pressure slurry conveying pipeline 29 is higher than a set value, if the pressure is lower than the set value, the grouting pump 7 is continuously operated, and if the pressure is higher than the set value, the grouting pump station system stops operating, the cement quantitative adding machine 3, the water pump 10 and the grouting pump 7 are stopped in a delayed mode, and no cement slurry is pumped into the high-pressure slurry conveying pipeline 29.
Step 6: manually judging whether grouting is continued or not, if the grouting is continued, manually starting the control cabinet 9 again, repeating the steps 1-5, and carrying out grouting operation again; if not, starting the grouting pump 7 to evacuate the cement grout in the first cement grout storage cylinder 5 and the second cement grout storage cylinder 6, starting the water pump 10 after evacuation is finished to deliver water to the first cement grout storage cylinder 5 and the second cement grout storage cylinder 6 to clean the first cement grout storage cylinder 5 and the second cement grout storage cylinder 6, and stopping the water pump 10, the grouting pump 7, the first cement grout storage cylinder 5 and the second cement grout storage cylinder 6 after cleaning is finished to finish grouting operation.
The above-described embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the invention, so that equivalent changes or modifications in the structure, features and principles described in the present invention should be included in the claims of the present invention.

Claims (8)

1. The utility model provides a large-scale ground slip casting pump station system, is including laying the slip casting pump station on ground, its characterized in that, the slip casting pump station includes:
the water tank (1), wherein a water pump (10) and a first liquid level meter (11) are arranged in the water tank (1);
the device comprises a cement storage tank (2), wherein one side of the cement storage tank (2) is hermetically communicated with a feeding screw machine (13);
the cement quantitative adding machine (3), the cement quantitative adding machine (3) is communicated with the cement storage tank (2) in a sealing way;
the inlet at the two ends of the ejector (4) is respectively communicated with the cement quantitative adding machine (3) and the water pump (10);
the jet device comprises a first cement slurry storage cylinder (5) and a second cement slurry storage cylinder (6), wherein the outlet of the jet device (4), the first cement slurry storage cylinder (5) and the second cement slurry storage cylinder (6) are sequentially communicated, and a second liquid level meter (25) and a densimeter (26) are arranged in the second cement slurry storage cylinder (6);
the grouting pump (7) is communicated with the second cement slurry storage barrel (6), and a flow meter (27) is arranged between the grouting pump (7) and the second cement slurry storage barrel;
the mixer (8), the said mixer (8) communicates with grouting pump (7), the slurry outlet of the mixer (8) has pressure gauges (28), the slurry outlet of the mixer (8) also communicates with the high-pressure slurry pipeline (29), there are pressure sensors (30) on the said high-pressure slurry pipeline (29);
the control cabinet (9), switch board (9) are connected with water pump (10), level gauge (11), material loading screw machine (13), cement ration interpolation machine (3), grout storage cylinder (5), grout storage cylinder two (6), level gauge two (25), densimeter (26), grouting pump (7), flowmeter (27) and pressure sensor (30) electricity respectively.
2. The large-scale ground grouting pump station system according to claim 1, characterized in that the water pump (10) comprises a pump body (101) and a pump motor (102) for driving the pump body (101), the pump body (101) and the pump motor (102) are respectively arranged inside and outside the water tank (1), a water suction port of the pump body (101) is positioned at the bottom of the water tank (1), and a water discharge port of the pump body (101) is positioned at the upper part of the water tank (1);
the water pump motor (102) is electrically connected with the control cabinet (9).
3. The large-scale ground grouting pump station system according to claim 1, characterized in that the cement storage tank (2) comprises a tank body (201) and tank legs (202) which are circumferentially arranged on the periphery of the tank body (201), and one side of the cement storage tank (2) is further provided with an overhauling ladder (15);
the feeding screw machine (13) is obliquely arranged, the feeding screw machine (13) comprises a feeding screw assembly (131), a cement hopper (132), a feeding screw motor (133) and a discharge opening (134), and the discharge opening (134) is communicated with the top of the tank body (201) and provided with a feeding sealing dust cover (14) for sealing.
4. The large-scale ground grouting pump station system according to claim 1, characterized in that the cement quantitative adding machine (3) is located below the cement storage tank (2), the cement quantitative adding machine (3) comprises an adding screw (31), an adding motor (32) for driving the adding screw (31), an adding hopper (33) communicated with the adding screw (31) and an adding outlet (34);
the adding screw (31) is a shaftless screw, the cement storage tank (2) and the adding hopper (33) are communicated, and a blanking sealing dust cover (16) is arranged between the cement storage tank and the adding hopper for sealing.
5. The large ground grouting pump station system according to claim 4, characterized in that the ejector (4) is located below the cement dosing machine (3), the ejector (4) comprises a water suction section (41), a mud suction section (42) and a slurry outlet section (43);
the water suction section (41) is communicated with the water pump (10) through a first pipeline (18), the sludge suction section (42) is communicated with the adding outlet (34) and is provided with a jet flow sealing dust cover (19) therebetween for sealing, and a second pipeline (20) is arranged between the slurry outlet section (43) and the first cement slurry storage cylinder (5) for communicating.
6. The large-scale ground grouting pump station system according to claim 1, wherein the first cement slurry storage cylinder (5) and the second cement slurry storage cylinder (6) both comprise a slurry storage cylinder body (23) and a stirring assembly (24), the stirring assembly (24) comprises a stirring motor (241), a stirring shaft (242), stirring blades (243) and turbulence rods (244) arranged on the inner wall of the slurry storage cylinder body (23), and the turbulence rods (244) and the stirring blades (243) are arranged in a vertically staggered manner;
and a connecting pipe (21) is arranged between the bottoms of the first cement slurry storage cylinder (5) and the second cement slurry storage cylinder (6) to communicate.
7. The large ground grouting pump station system according to claim 1, wherein the grouting pump (7) is a hydraulic double-liquid grouting pump, a third pipeline (22) is arranged between a slurry suction port of the grouting pump (7) and the second cement slurry storage barrel (6) for communication, and the flowmeter (27) is arranged on the third pipeline (22);
and a pipeline four (40) is arranged between the slurry discharging port of the grouting pump (7) and the slurry inlet of the mixer (8) to be communicated.
8. The control method of the large-scale ground grouting pump station system based on any one of claims 1 to 7 is characterized by comprising the following steps:
step 1: the control cabinet (9) is manually started, and the control cabinet (9) firstly controls the starting of the first cement slurry storage cylinder (5) and the second cement slurry storage cylinder (6);
and 2, step: the first liquid level meter (11) monitors whether the water level in the water tank (1) reaches a set target or not, if the water level reaches the set target, the water pump (10) is started and the frequency is set, the quantitative cement adding machine (3) is started in a delayed mode and the frequency is set;
the first liquid level meter (11) monitors whether the water level in the water tank (1) reaches a lower limit, if the water level does not reach the lower limit, the water pump (10) and the cement quantitative adding machine (3) are continuously operated, and if the water level reaches the lower limit, the water pump (10) and the cement quantitative adding machine (3) are stopped;
and step 3: a second liquid level meter (25) monitors whether the liquid level of the cement paste reaches a set height, if the liquid level does not reach the set height, the water pump (10) and the cement quantitative adding machine (3) are continuously operated, and if the liquid level reaches the set height, the grouting pump (7) is started and the frequency is set;
a second liquid level meter (25) monitors whether the liquid level of the cement paste reaches an upper limit and a lower limit, if the liquid level of the cement paste is higher than the upper limit, the water pump (10) and the cement quantitative adding machine (3) are stopped, and if the liquid level of the cement paste is lower than the lower limit, the frequency of a grouting pump (7) is reduced;
and 4, step 4: the densimeter (26) monitors whether the density of the cement slurry is lower than a set value, if the density of the cement slurry is lower than the set value, the frequency of the water pump (10) is reduced, if the density of the cement slurry is higher than the set value, the frequency of the cement quantitative adding machine (3) is reduced,
and 5: the pressure sensor (30) monitors whether the pressure of the high-pressure slurry conveying pipeline (29) is higher than a set value, if the pressure is lower than the set value, the grouting pump (7) is continuously operated, and if the pressure is higher than the set value, the grouting pump (7), the cement quantitative adding machine (3) and the water pump (10) are stopped;
step 6: and (3) manually judging whether grouting is continued or not, if so, manually starting the control cabinet (9) again, repeating the steps 1-5, if not, starting the grouting pump (7) to evacuate the cement slurry, starting the water pump (10) to clean after evacuation is finished, and stopping the water pump (10), the grouting pump (7), the first cement slurry storage cylinder (5) and the second cement slurry storage cylinder (6) after cleaning is finished to finish grouting operation.
CN202111507333.XA 2021-12-10 2021-12-10 Large ground grouting pump station system and control method Pending CN114483093A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111507333.XA CN114483093A (en) 2021-12-10 2021-12-10 Large ground grouting pump station system and control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111507333.XA CN114483093A (en) 2021-12-10 2021-12-10 Large ground grouting pump station system and control method

Publications (1)

Publication Number Publication Date
CN114483093A true CN114483093A (en) 2022-05-13

Family

ID=81492046

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111507333.XA Pending CN114483093A (en) 2021-12-10 2021-12-10 Large ground grouting pump station system and control method

Country Status (1)

Country Link
CN (1) CN114483093A (en)

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