CN103924785A - Thickened cement preblend mortar green construction method - Google Patents

Abstract

The invention relates to a cement preblend mortar green construction technology and device and provides a thickened cement preblend mortar green construction method. According to the method, a center station unit, a terminal station unit and a constant pressure pump spraying unit are used, a long-distance distributed control mode is used, the center station unit controls and manages the terminal station unit through a long-distance communication network, so that all kinds of mortar are prepared automatically through the terminal station unit, the mortar is conveyed to a construction site for construction through the constant pressure pump spraying unit, whole-course quality is tracked through a two-dimension code identification management system, and all waste water and waste mortar for equipment washing are used for mortar preparing through a waste water recovery processing unit.

Description

Green construction method of thickened cement ready-mixed mortar

technical field

The invention relates to green construction technology and equipment of ready-mixed mortar. the

Background technique

In 2007, the Ministry of Commerce, the Ministry of Public Security, the Ministry of Construction, the General Administration of Quality Supervision, Inspection and Quarantine, and the State Environmental Protection Administration issued the "Notice on Prohibiting On-site Mixing of Mortar Work in Some Cities within a Time Limit" (Shang Gaifa [2007] No. 205), Guangzhou as the first batch Cities that banned on-site mixing of mortar within a limited period began to promote the use of ready-mixed mortar in 2008, but the effect was not satisfactory. The main reason is that there are defects in the two ready-mixed mortars currently used: the wet-mixed mortar is limited by the time limit of use, and the dry-mixed mortar has segregation and dust during the distribution process; the two are only substitutes for traditional mortars, and the construction method has not changed. the

Contents of the invention

The purpose of the present invention is to provide a green construction method of thickened cement ready-mixed mortar, which adopts the remote collection and distribution control mode, and the central station controls and manages the terminal station through the remote communication network, so that the terminal station can automatically prepare various types of mortar required for the project , use a pump sprayer to send it to the construction points of each floor of the building site for direct spraying operation, completely solve the quality problems such as storage and transportation of dry powder mortar, segregation of wet mortar, and outdated failure of wet mortar; at the same time, it is convenient for construction quality supervision and tracking, and all waste water and waste slurry can be reused , Realize the green construction of ready-mixed mortar. the

The purpose of the present invention is achieved through the following technical solutions:

The green construction method of thickened cement ready-mixed mortar is used for the production, use and management of thickened cement ready-mixed mortar. Thickened cement ready-mixed mortar is made by mixing thickened cement, aggregate and water and is suitable for construction It is a building material used for plastering or laying bricks on the surface of objects. The thickened cement can be directly provided by the manufacturer, or it can be obtained by mixing the general cement + thickener used in daily use. The aggregate is mainly sand.

The equipment used in the present invention includes a central station unit, a terminal station unit, and a constant pressure pump spray unit. The remote collection and distribution control method is adopted, and the central station unit supplies thickened cement and prefabricated aggregates to the terminal station unit. The network controls and manages the terminal station unit, so that the terminal station unit can automatically prepare all kinds of mortar required by the project, and send it to the construction site by the constant pressure pump spray unit for construction operation. The quality of the whole process is tracked through the two-dimensional code identification management system, and the cleaning The waste water and waste mortar of the equipment are all used to prepare mortar through the waste water recovery and treatment unit. the

(1) Central station unit

This unit is the central management organization of the whole system, responsible for managing the operation of all terminal stations in the system; this unit is set in the ready-mixed mortar factory, including the central control and dispatching system, the specimen curing room and the laboratory.

The central control dispatching system is equipped with two-dimensional code identification management system, ERP management system and communication management system, and monitors and manages each terminal station unit in real time through the 3G+internet network; the two-dimensional code identification management system receives each batch of mortar sent by the terminal station The two-dimensional code identification of the sample and its construction site data, combined with the identification test data sent by the laboratory, carry out file management and data analysis, and automatically generate a project quality report; the test piece curing room has national standard maintenance conditions and is used for Continue to maintain the mortar product test pieces sent by the terminal station; the laboratory is equipped with a full set of testing and analysis instruments to test the quality of the test pieces that have reached the curing age. the

(2) Terminal station unit

This unit is a device for manufacturing ready-mixed mortar. It is installed near the construction site. The main equipment includes terminal station control system, mixer, cement storage, sand storage, activator storage, waste water recovery and treatment unit and specimen identification system.

There is a discharge valve at the lower end of the mixer;

The cement storage warehouse is equipped with a material level gauge, a dust collector, a vibrator attached to the wall, a cement feeder, a cement weighing hopper and a cement discharge valve; the cement in the cement storage warehouse passes through the cement feeder, cement measurement hopper and cement discharge valve into the blender;

The sand warehouse is equipped with a hygrometer, a vibrator attached to the wall, a sand feeder, a sand metering bucket and a sand bucket tractor; the sand in the sand warehouse enters the sand metering bucket through the sand feeder, and is pulled by the sand bucket machine into the mixer;

The activator warehouse is equipped with a material level gauge, activator feeding machine, activator metering hopper, and discharge valve; the activator in the activator library is sent to the mixer through the activator feeding machine, activator metering hopper, and discharge valve.

The waste water recovery and treatment unit is equipped with a waste water tank, a sand filter machine, a purifier, a slurry pump, a spray head, a flow meter, a turbidity meter and a waste sand metering feeder; the sand filter machine is placed in the waste water tank, and it will enter the waste water tank The sand in the waste water is separated and output, and the waste sand is sent to the mixer through the waste sand metering feeder; the purifier pipe is connected to the waste water tank, and the purifier separates the waste water from the clear water and slurry by sedimentation, and the slurry in the purifier is pumped by the slurry pump The water in the purifier is sent to the mixer through the flow meter and turbidity meter along the slurry pipe; the clean water in the purifier is sprayed onto the sand filter machine through the return pipe, pipeline pump and sprinkler head, and then returns to the waste water pool. The purifier is equipped with an automatic water replenishment device. the

The terminal station control system is the management and control center of the terminal station, which includes a central control module with input and output interfaces, a 3G communication module responsible for contacting the central station, and a two-dimensional code identification module responsible for product quality tracking. Contact with the central control and dispatching system of the central station; the input interface of the central control module is connected with the material level gauge of the cement storage warehouse, the weighing sensor of the cement measuring bucket, the material level gauge of the activator warehouse, the weighing sensor of the activator measuring bucket, and the sand weighing bucket The load cell, flow meter, turbidity meter, and hygrometer are electrically connected; the output interface of the central control module is connected to the mixer, slurry discharge valve, dust collector, wall vibrator, cement feeder, cement discharge valve, and activator feeder. Material machine, activator discharge valve, sand feeder, sand mixing bucket tractor, sand storage wall vibrator, waste sand metering feeder, slurry pump electrical connection of waste water recovery and treatment unit. the

The specimen identification system of the terminal station unit is a facility for mortar product quality tracking, including specimen production equipment, standard curing boxes, and two-digit code readers; 

The specimen identification system is electrically connected to the terminal station control system. The specimen identification system reads the QR code identification of each batch of mortar and sends it to the terminal station control system. The terminal station control system sends the QR code identification and construction site and other information To the central control dispatching system of the central station, at the same time, artificial sampling is made to make test pieces and the corresponding QR codes are attached to them, and then they are transported to the central station unit for maintenance and testing, and the test data are sent to the central control dispatching system for processing.

The working principle of the terminal station:

When the user needs mortar, the operator of the terminal station requests the production task instruction from the central control and dispatching system of the central station through the terminal station control system, and the terminal station control system calls out the memory formula according to the reply instruction to give various raw material configurations for each working cycle start the cement feeder to add cement in the cement storage to the cement metering hopper, and at the same time start the waste sand metering feeder to add the waste sand produced by the waste water recovery and treatment unit to the sand metering hopper; the weighing sensor of the cement metering hopper will correspond The current signal of the cement weight is sent to the control system of the terminal station for judgment, and the feeding is stopped when it reaches 50-90% of the predetermined weight; similarly, the sensor of the sand metering bucket sends the current signal corresponding to the weight of waste sand to the control system of the terminal station for judgment, and when the predetermined weight is reached The weight stops feeding, and at the same time starts the sand feeder to feed the sand metering bucket to a predetermined value; then, the terminal station control system performs static weight measurement on the sand metering bucket, and adjusts the cement in the formula according to the actual total weight in the bucket. The given amount of slurry; start the sand bucket tractor to lift the sand metering bucket to the feed port of the mixer, touch the lifting bucket discharge door, the sand will be automatically discharged into the mixer, and delay 1 after the sand bucket tractor starts seconds to start the mixer.

The control system of the terminal station starts the slurry pump of the high-efficiency purifier of the wastewater recovery unit to send the slurry to the mixer along the slurry pipe according to the adjusted given amount, and analyzes the cement and clean water in the slurry flow through the flow meter and turbidity meter content, when the converted water content of the slurry reaches a given value, the slurry pump is shut down, and the given amount of the activator is calculated according to the cement content in the slurry (the activator is an active material containing CaO, such as Ca(OH) ₂ , the activator The function is to make the slurry achieve the effect close to that of cement), start the activator feeder to feed the activator metering hopper to a given value and put it into the mixer through the discharge valve, and restart the cement feeder to measure the cement at the same time When the hopper feeds, when the adjusted given amount is reached, the feeding is stopped and the cement discharge valve is started to put the cement into the mixer.

Cement, waste sand, sand, slurry and activator are stirred in the mixer until the formula setting time, the control system of the terminal station opens the slurry discharge valve, and puts the slurry into the transport vehicle. Complete a batching cycle like this. the

The control system of the terminal station sends all the working data of the mortar preparation process to the central control system of the central station through the 3G communication module;

Samples are taken from each batch of mortar products to make test pieces, affixed with a QR code, read through the terminal station control system and sent to the central station. The test pieces are placed in a standard curing box, and are regularly transported to the central station for test piece maintenance. The maintenance room will continue to be maintained, and it will be sent to the laboratory for inspection after reaching the age.

(3) Constant pressure pump spray unit

This unit is a device for pumping mortar and spraying construction. Its structure includes a constant pressure controller, a slurry collecting hopper, a mortar pumping machine, a slurry delivery steel pipe, a constant pressure distributor, a slurry delivery hose, an air compressor, Gas pipes, spray guns; slurry collecting hoppers are connected to the mortar pump sprayer and placed on the ground floor of the construction site, and the slurry delivery steel pipe connects the mortar pump sprayer to the constant pressure distributor installed on the construction floor, and more than one is installed at the bottom of the constant pressure distributor The output pipe with valve, the spray gun is connected to the output pipe with valve through the slurry delivery hose, the air compressor is connected to the spray gun through the air pipe, the slurry regulating valve and the air volume regulating valve are installed on the spray gun; the pressure sensor is installed on the upper part of the constant pressure distributor and It is electrically connected to the constant voltage controller through the signal line.

Its working principle:

The mortar produced at the terminal station is sent to the slurry collection hopper by the transport vehicle or directly, pressurized by the mortar pump sprayer, sent to the constant pressure distributor installed on the construction floor through the slurry delivery steel pipe, and then transferred to the slurry delivery hose. Spray gun; the compressed air output by the air compressor is sent into the spray gun through the air pipe to make the mortar form a jet and spray on the wall. The slurry regulating valve and air volume regulating valve on the spray gun can start and stop spraying and adjust the shape and flow of the jet; installed in a constant pressure The pressure sensor in the distributor transmits the pressure signal to the constant pressure controller to make it frequency-converted to adjust the slurry output pressure of the mortar pump sprayer to keep the pressure in the constant pressure distributor stable; in addition, the constant pressure controller also controls the mortar pump sprayer Work intermittently during constant pressure to keep the mortar in the pipeline wriggling to overcome the thixotropic resistance of the machine-sprayed mortar.

The present invention has the following prominent substantive features and significant progress:

1. The present invention realizes the integrated construction scheme of pulping, pumping, spraying construction and management, reduces construction personnel and labor intensity, improves construction quality and construction efficiency, and reduces engineering costs;

2. The terminal station adopts innovative follow-up control precision batching technology, which effectively guarantees the accuracy of raw material ratio;

3. The central station realizes real-time management of each terminal station through the remote distributed control system, optimizes resource allocation and production scheduling, and maximizes comprehensive benefits;

4. Adopting the combination technology of constant pressure distributor and intelligent frequency modulation control hydraulic pump sprayer, it overcomes the static resistance caused by the inherent thixotropy of the pump spray mortar and the discontinuous characteristics of the output mortar of the hydraulic pump sprayer, and realizes continuous slurry output from the spray gun and a Machine multi-gun, elevation pump spray and automatic adjustment of output power of pump spray machine with construction height;

5. Adopt QR code quality tracking management system to manage the whole process of preparation, construction and inspection of ready-mixed mortar; effectively guarantee the quality of mortar construction results;

6. The wastewater reuse system adopts innovative high-efficiency purifiers and waste pulp stimulation regeneration technology; high-efficiency purifiers are used to replace traditional sedimentation tanks, speed up the separation of waste pulp, and save floor space.

Description of drawings

Fig. 1 is the structural representation of central station unit of the present invention. the

Fig. 2 is a schematic diagram of the structure of the terminal station unit of the present invention. the

Fig. 3 is a schematic diagram of the structure of the constant pressure pump spray unit of the present invention. the

Detailed ways

The present invention will be further described below with specific embodiment:

Referring to Figure 1, Figure 2 and Figure 3, the green construction method of thickened cement ready-mixed mortar, the equipment includes a central station unit 1, a terminal station unit 2, and a constant pressure pump spray unit 3; the present invention adopts a remote collection and distribution control method, and the central station unit 1 uniformly supplies thickened cement and prefabricated aggregates to the terminal station unit 2, and the central station unit 1 controls and manages the terminal station unit 2 through the remote communication network, so that the terminal station unit 2 can automatically prepare various types of mortar required for the project. The pressure pump spray unit 3 is pumped to the construction site for spray plastering and masonry grouting operations; the system tracks the quality of mortar preparation and the whole process of construction through the two-dimensional code identification management system, and the waste water and waste mortar used for cleaning equipment Wastewater recovery treatment unit 4 is all reused as preparing mortar.

The configuration rules for the green construction method of thickened cement ready-mixed mortar are: One central station unit can manage multiple terminal station units, one terminal station unit is equipped with a waste water recovery and treatment unit, and the mortar produced by one terminal station unit can supply multiple constant pressure Pump spray unit use. the

1. Central station unit

The unit is set in the ready-mixed mortar production plant, including a central control dispatching system 11, a specimen curing room 12, and a laboratory 13. The central control dispatching system 11 of this example uses a set of multifunctional HP workstations, which is equipped with a two-dimensional code identification management system, an ERP management system and a communication management system, and monitors and manages the terminal station unit 2 in real time through a 3G+internet network; two-dimensional code The identification management system receives the two-dimensional code identification of each batch of mortar samples and the construction site data sent by the terminal station unit 2, combines the identification test piece detection data sent by the laboratory 13, performs file management and data analysis, and automatically generates engineering quality report. The test piece curing room 12 has the national standard curing conditions, and is used for continuing to maintain the mortar product test pieces sent by the terminal station. Laboratory 13 is equipped with a full set of testing and analysis instruments for testing the quality of test pieces that have reached the maintenance age.

2. Terminal station unit

This unit is a device for manufacturing ready-mixed mortar, which is installed near the construction site. The main equipment includes terminal station control system 20, mixer 26, cement storage 21, sand storage 22, activator storage 24, waste water recovery treatment unit 4 and test pieces Identification system5.

The top of the mixer 26 is provided with an exhaust pipe 263 and the lower end is provided with a slurry discharge valve 262;

The cement storage 21 is provided with a material level meter 212, a dust collector 213, a wall vibrator 214, a cement feeder 215, a cement weighing hopper 216, and a cement discharge valve 217; the cement in the cement storage 21 passes through the cement feeder 215 , cement metering hopper 216 and cement discharge valve 217 enter mixer 26.

The sand warehouse 22 is provided with a hygrometer 223, a wall vibrator 224, a sand feeder 225, a sand metering bucket 226 and a sand bucket tractor 227; The bucket 226 is brought into the mixer 26 by the sand lifting bucket tractor 227. the

The activator warehouse 24 is provided with a material level meter 245, an activator feeder 242, an activator metering hopper 243, and a discharge valve 244; 244 into the blender 26. the

The waste water recovery treatment unit 4 is provided with a waste water tank 41, a sand filter machine 42, a purifier 43, a slurry pump 44, a spray head 45, a flow meter 231, a turbidity meter 232, and a waste sand metering feeder 25; a sand filter machine 42 Placed in the waste water tank 41, it will enter the sand separation output in the waste water of the waste water tank 41, and the waste sand is sent into the mixer 26 through the waste sand metering feeder 25; the purifier 43 is connected to the waste water tank 41, and the purifier 43 will The waste water is precipitated to separate clean water and slurry. The slurry is sent to the mixer 26 by the slurry pump 44 along the slurry pipe 23 through the flow meter 231 and the turbidity meter 232. The clean water is sprayed to the filter sand through the return pipe, the pipeline pump 437 and the spray head 45. On the machine 42, get back in the waste water pool 41 again, and the purifier 43 is provided with an automatic water supply device 46. the

The terminal station control system 20 includes a central control module with input and output interfaces, a 3G communication module responsible for contacting the central station, and a two-dimensional code identification module responsible for product quality tracking, which communicates with the central control dispatching system 11 of the central station through the 3G network , the input interface of the central control module is connected to the weighing sensor of the cement storage warehouse material level gauge 212, the cement weighing bucket 216, the activator warehouse material level gauge 245, the weighing sensor of the activator weighing bucket 243, and the weighing sensor of the sand weighing bucket 226. Heavy sensor, flow meter 231, turbidity meter 232, and hygrometer 223 are electrically connected; the output interface is connected to the mixer 26, the slurry discharge valve 262, the dust collector 213, the wall vibrator 214, the cement feeder 215, and the cement discharge valve 217 , activator feeder 242, activator discharge valve 244, sand feeder 225, sand mixing bucket tractor 227, vibrator 224 attached to the sand warehouse wall, waste sand metering feeder 25, waste water recovery treatment unit 4 The paddle pump 44 is electrically connected. the

The terminal station control system 20 selects the memory formula according to the instructions sent by the central control dispatching system 11 of the central station. The mixer 26 mixes cement, sand, waste sand, slurry and activator into mortar, and all the prepared mortar is discharged each time. The valve 262 is directly unloaded to the constant pressure pump spray unit 3 or unloaded to the mortar transport vehicle 39 and then transported to the constant pressure pump spray unit 3 . the

The components of the specimen identification system 5 include specimen making equipment, a standard curing box, and a two-dimensional code reader. the

When the user needs mortar, the operator of the terminal station requests the production task instruction from the central control dispatching system 11 of the central station 1 through the terminal station control system 20. Dosing of various raw materials. the

The control procedure is as follows:

Start the cement feeder 215 to add the cement in the cement storage 21 to the cement metering hopper 216, the weighing sensor of the cement metering hopper 216 sends the current signal corresponding to the cement weight to the terminal station control system 20 for judgment, and stop feeding when it reaches 90% of the predetermined weight .

Start the waste sand feeder 25 to add the waste sand produced by the waste water recovery treatment unit 4 into the sand metering bucket 226; the sensor of the sand metering bucket 226 sends the current signal corresponding to the sand weight to the terminal station control system 20 for judgment, and the predetermined weight is reached That is to say, stop feeding. the

Start the sand feeder 225 to feed the sand metering bucket 226 to a predetermined value; the terminal station control system 20 performs static weight measurement on the sand metering bucket 33, and adjust the amount of cement and slurry in the formula according to the actual total weight of sand in the bucket. Set the amount; start the sand bucket tractor 227 to lift the sand metering bucket 226 to the feed port of the mixer 26, touch the lifting bucket discharge door, the sand will be automatically discharged into the mixer, and the sand bucket tractor 227 will start after 1 second The mixer 26 works. the

The terminal station control system 20 starts the slurry pump 44 of the high-efficiency purifier to send the slurry produced by the waste water recovery treatment unit 4 into the mixer 26 along the slurry pipe 23 according to the adjusted given amount, and passes through the flow meter 231 and the turbidity meter 232 Analyze the cement and clear water content in the slurry flow. When the converted clear water content of the slurry reaches a given value, the slurry pump is shut down, and the given amount of activator is calculated according to the cement content in the slurry flow (the activator in this embodiment is Ca(OH) ₂ ).

Start the activator feeder 242 to feed the activator metering hopper 243 to a given value and put it into the mixer 26 through the discharge valve 244 . the

Finally, restart the cement feeder 215 to add cement, so that when the given amount is reached, the feed is stopped and the cement discharge valve 217 is started to put cement into the mixer 26. the

Cement, waste sand, sand, slurry and activator are stirred in the mixer 26 until the formula setting time, the terminal station control system 20 opens the slurry discharge valve 262, and the slurry mortar is put into the transport vehicle. Complete a batching cycle like this. the

The terminal station control system 20 sends all the working data of the mortar preparation process to the central station through the 3G communication module;

Samples are taken from each batch of mortar products to make test pieces, affixed with a two-digit code mark, read through the terminal station control system 20 and sent to the central station, the test pieces are put into the standard curing box, and sent to the central station regularly. Conservation room 12 continues to maintain, and after reaching the age, send laboratory 13 to check.

Terminal station technical indicators:

1. Capacity: 30M ³ /h;

2. Environmental indicators: meet the relevant requirements of Jianzhi [2007] No. 223 "Green Construction Guidelines";

3. Terminal station operator: 1 person;

4. Raw material reserves in the terminal station:

1), special cementitious material thickened cement) 45 tons;

2), aggregate sand: 70 M ³ ;

5. Installed power: 34KW.

3. Constant pressure pump spray unit

The constant pressure pumping unit 3 includes a constant pressure controller 30, a slurry collecting hopper 31, a mortar pumping machine 32, a slurry delivery steel pipe 33, a constant pressure distributor 34, a pressure sensor 341, a signal line 342, a slurry delivery hose 35, an air Compressor 36, air pipe 37, spray gun 38.

The slurry collecting hopper 31 is connected with the mortar pump sprayer 32 and placed on the ground floor of the construction site. The slurry delivery steel pipe 33 connects the mortar pump sprayer 32 to the constant pressure distributor 34 installed on the construction floor. The bottom of the constant pressure distributor 34 is installed with 3 A valve output pipe 343, the spray gun 38 is connected to the band valve output pipe 343 by the slurry delivery hose 35, the air compressor 36 is connected to the spray gun 38 by the air pipe 37, the slurry regulating valve and the air volume regulating valve are housed on the spray gun; the pressure sensor 341 is installed It is on the upper part of the constant voltage distributor 34 and is electrically connected to the constant voltage controller 30 through the signal line 342 . the

When working, the mortar produced by the terminal station 2 is transported by the mortar transport vehicle 39 to the slurry collection hopper 31 of the unit, pressurized by the mortar pump sprayer 32, and enters the constant pressure distributor 34 installed on the construction floor through the slurry delivery steel pipe 33 Inside, the slurry delivery hose 35 is transferred to the spray gun 38; the compressed air output by the air compressor 36 is sent to the spray gun 38 through the air pipe 37, so that the mortar forms a jet and sprays on the wall, and the slurry regulating valve and air volume regulating valve on the spray gun 38 It can start and stop the spraying and adjust the jet shape and flow rate; the pressure sensor 341 installed in the constant pressure distributor 34 transmits the pressure signal to the constant pressure controller 30, so that it can be adjusted by frequency conversion to adjust the slurry output pressure of the mortar pump sprayer 32 to maintain The pressure in the constant pressure distributor 34 is stable; in addition, the constant pressure controller 30 also controls the mortar pump sprayer 32 to work intermittently during the constant pressure period, so that the mortar in the slurry delivery steel pipe 33 keeps wriggling to overcome the thixotropy of the machine-sprayed mortar resistance. the

Technical indicators of constant pressure pump spray unit:

1. Mortar pump sprayer

(1) Maximum output pressure: 6MP;

(2) Maximum output flow: 6 M ³ /h;

(3) Working method: hydraulic piston type;

(4) Control method: frequency conversion speed regulation;

2. Constant pressure distributor

(1) I/O interface: one input and three output;

(2) Volume: 36 liters.

4. Further description of the waste water recycling unit

The waste water pool 41 is welded with steel plates, the outer surface is sprayed with anti-corrosion paint, and the inner surface is pasted with a fiberglass anti-corrosion layer;

The sand filter 42 is a screw conveyor with an open top. The inner and outer walls are sprayed with anti-corrosion paint.

Purifier 43 is made of glass fiber reinforced plastic material garden tank, the top is equipped with adding cover maintenance hole 431 and slurry outlet 436, and the upper side of the tank wall is equipped with water inlet pipe 432, and its inner port is inserted to near bottom in the tank, and outlet pipe 435 is in The other upper side of the tank wall; the slurry pump 44 is a submersible pump, which is installed at the bottom of the purifier, and the slurry outlet pipe 439 connected to the slurry pump 44 is connected to the slurry pipe 23 after being drawn out from the slurry outlet 436; There is an automatic water supply device 46 with a float valve, and the driving power line of the slurry pump 44 is drawn out from the slurry outlet port 436 and connected to the control system 20 of the terminal station. the

working principle:

The waste water and waste mortar from cleaning mixers and transport vehicles are poured into the waste water tank 41. Under the action of gravity, the sand is first precipitated and taken out by the sand filter machine 42. The sand metering feeder 25 is used as the mortar raw material; the slurry water in the waste water pool 41 flows out and is treated by the purifier 43, and the precipitated clean water is sent to the spray head 45 above the sand filter machine 42 through the return pipe and the pipeline pump 437 to spray out the sand for sand washing , The slurry is extracted by the slurry pump 44 for the terminal station to prepare mortar; the consumed water is replenished by injecting clear water from the automatic water supply device 46, and the water intake is controlled by a float valve to keep the water level of the entire purifier 43 constant.

Technical indicators of wastewater recovery treatment unit:

1. Volume of waste slurry pool: 20M ³ ;

2. Volume of high-efficiency purifier: 2M ³ ;

3. Pump power: 1.1 KW;

4. Power of sand filter machine: 4 KW.

Claims (7)

1. The green construction method of thickened cement ready-mixed mortar. The equipment includes a central station unit (1), a terminal station unit (2), and a constant pressure pump spray unit (3). (1) Set up in the ready-mixed mortar production plant, including central control dispatching system (11), specimen curing room (12), laboratory (13), central control dispatching system (11) equipped with ERP management system and communication management System, the central station unit (1) monitors and manages each terminal station unit (2) in real time through the 3G+internet network, so that the terminal station unit (2) can automatically prepare all kinds of mortar required for the project, and the constant pressure pump spray unit ( 3) Sent to the construction site for construction operations, the waste water and waste mortar from the cleaning equipment are all used for preparing mortar after being treated by the waste water recovery treatment unit (4) located in the terminal station unit (2). 2. the thickened cement ready-mixed mortar green construction method according to claim 1, is characterized in that: The terminal station unit (2) is installed near the construction site, and the main equipment includes the terminal station control system (20), mixer (26), cement storage (21), sand storage (22), activator storage (24) and waste water recycling processing unit (4); A slurry discharge valve (262) is provided at the lower end of the mixer (26); The cement storage (21) is equipped with a material level meter (212), a dust collector (213), a wall vibrator (214), a cement feeder (215), a cement measuring hopper (216) and a cement discharge valve (217) ; The cement in the cement storage (21) enters the mixer (26) through the cement feeder (215), the cement weighing hopper (216) and the cement discharge valve (217); The sand warehouse (22) is equipped with a hygrometer (223), a wall vibrator (224), a sand feeder (225), a sand weighing bucket (226) and a sand bucket tractor (227); the sand warehouse (22 ) enters the sand metering bucket (226) through the sand feeder (225), and is brought into the mixer (26) by the sand bucket tractor (227); The activator storehouse (24) is equipped with a material level gauge (245), an activator feeder (242), an activator metering hopper (243), and a discharge valve (244); the activator storehouse (24) is fed through the activator Machine (242), activator metering hopper (243) and discharge valve (244) are sent into mixer (26); Wastewater recovery and treatment unit (4) is equipped with waste water pool (41), sand filter machine (42), purifier (43), slurry pump (44), sprinkler head (45), flow meter (231), turbidity meter (232) and waste sand metering feeder (25); the sand filter machine (42) is placed in the waste water tank (41), which separates and outputs the sand in the waste water entering the waste water tank (41), and the waste sand passes through the waste sand The metering feeder (25) feeds into the mixer (26); the pipe of the purifier (43) is connected to the waste water pool (41), and the purifier (43) separates the waste water from sedimentation to clear water and slurry, and the slurry is pumped by the slurry pump (44 ) into the mixer (26) along the slurry pipe (23) through the flow meter (231) and turbidity meter (232); clean water is sprayed to the sand filter machine ( 42) Go back to the waste water pool (41), and the purifier (43) is equipped with an automatic water replenishment device (46); The terminal station control system (20) includes a central control module with input and output interfaces, a 3G communication module responsible for contacting the central station, and a two-dimensional code identification module responsible for product quality tracking, which communicates with the central control dispatching system of the central station through the 3G network (11) Contact, the input interface of the central control module is connected with the cement storage level meter (212), the weighing sensor of the cement metering hopper (216), the activator library level meter (245), and the activator metering hopper (243) The weighing sensor, the weighing sensor of the sand measuring bucket (226), the flow meter (231), the turbidity meter (232), and the hygrometer (223) are electrically connected; the output interface is connected to the mixer (26) and the slurry discharge valve ( 262), dust collector (213), wall vibrator (214), cement feeder (215), cement discharge valve (217), activator feeder (242), activator discharge valve (244) , sand feeder (225), sand bucket tractor (227), sand storehouse wall vibrator (224), waste sand metering feeder (25), slurry pump for waste water recovery treatment unit (4) ( 44) electrical connection; The terminal station control system (20) selects the memory formula according to the instructions sent by the central control dispatching system (11) of the central station, and the mixer (26) mixes cement, sand, waste sand, slurry and activator into mortar, and prepares each time All the mortar is directly unloaded to the constant pressure pump spray unit (3) through the unloading valve (262) or unloaded to the mortar transport vehicle (39) and then transported to the constant pressure pump spray unit (3). 3. The green construction method of thickened cement ready-mixed mortar according to claim 2, characterized in that: the central control dispatching system (11) is equipped with a two-dimensional code identification management system; the terminal station unit (2) also includes a test piece Identification system (5): it includes test piece production equipment, standard curing box, two-digit code reader, and the test piece identification system (5) is electrically connected to the terminal station control system (20); The specimen identification system (5) reads the two-dimensional code identification of each batch of mortar through the two-digit code reader and sends it to the terminal station control system (20), and the terminal station control system (20) uses the two-dimensional code identification and construction The position data is sent to the central control and dispatching system (11) of the central station unit (1), and at the same time, samples are produced and the test pieces are pasted with corresponding QR codes, and then transported to the central station unit (1) for maintenance and testing, and the test data are sent to the central station The control scheduling system (11) performs processing. 4. The green construction method of thickened cement ready-mixed mortar according to claim 2, characterized in that: The purifier (43) of the wastewater reuse unit (4) is a simple and efficient purifier. The device is a cylindrical fiberglass tank with a spherical crown at the upper and lower ends. The upper end is equipped with an inspection door (431), a discharge nozzle (436) and belt The automatic water replenishment device (46) of the ball valve, the slurry pump (44) is installed at the bottom of the glass fiber reinforced plastic tank, and one end of the slurry outlet pipe (439) is connected to the slurry pump (44) through the discharge nozzle (436). The other end is connected to the slurry pipe (23), and the electric wire passes through the outlet pipe (436) to connect the slurry pump (44) to the terminal station control system (20). The water outlet pipe (435), the inner connection pipe of the water inlet pipe (432) leads to the middle and lower part of the glass fiber reinforced plastic tank, the inner port of the water outlet pipe (435) is located at the inner upper part of the glass fiber reinforced plastic tank, and the outer port is connected to the return pipe. 5. The green construction method of thickened cement ready-mixed mortar according to claim 2, characterized in that the preparation of the mortar at the terminal station adopts the method of fine control quantity and coarse control quantity to ensure the proportioning accuracy, and all operations are controlled by the terminal station control system (20) The control is completed, the specific steps are as follows: 5.1) First add the pre-added amount of cement into the mixer (26) through the cement feeder (215), cement metering hopper (216) and cement discharge valve (217), and the pre-added amount of cement is the amount of cement added this time 50-90% of 5.2) Start the waste sand metering feeder (25) to add the formula amount of waste sand to the sand metering hopper (226) and statically measure the actual feeding amount; 5.3) Start the sand feeder (225) to add the formula amount of sand and statically measure the actual feeding amount. The terminal station control system (20) simultaneously calculates Step 5.2 and the total actual amount of sand and water added this time, and then according to the requirements of the mix ratio, set the given amount of water and cement; 5.4) Start the slurry pump (44) to add the slurry recovered from waste water to the mixer (26), and at the same time add water and cement based on the dynamic measurement values of the flow meter (231) and turbidity meter (232), so that the cumulative The amount of water added reaches the given amount of water in step 5.3; 5.5) Calculate the addition amount of the activator based on the accumulated cement amount in step 5.4 and add the activator to the mixer (26) through the activator feeder (242), the activator metering hopper (243) and the discharge valve (244) Make the amount of activator added; 5.6) According to the cumulative amount of cement in step 5.4 and the pre-added amount of cement in step 5.1, feed the mixer ( 26) Finely adjust the amount of cement added so that the total amount of cement added this time reaches the given amount of cement determined in step 5.3, and a batching cycle is completed. 6. The green construction method of thickened cement ready-mixed mortar according to claim 1 or 2 or 3 or 4 or 5, characterized in that: The constant pressure pumping unit (3) includes a constant pressure controller (30), a slurry collecting hopper (31), a mortar pumping machine (32), a slurry delivery steel pipe (33), a constant pressure distributor (34), a pressure sensor ( 341), signal line (342), slurry delivery hose (35), air compressor (36), air pipe (37), spray gun (38); the slurry collecting bucket (31) is connected with the mortar pump sprayer (32) and placed On the ground floor of the construction site, the slurry delivery steel pipe (33) connects the mortar pump sprayer (32) to the constant pressure distributor (34) installed on the construction floor, and more than one belt belt is installed at the bottom of the constant pressure distributor (34). The valve output pipe (343), the spray gun (38) is connected to the valve output pipe (343) through the slurry delivery hose (35), the air compressor (36) is connected to the spray gun (38) through the air pipe (37), and the slurry is installed on the spray gun A material regulating valve and an air volume regulating valve; the pressure sensor (341) is installed in the upper part of the constant pressure distributor (34) and is electrically connected to the constant pressure controller (30) through the signal line (342). 7. The green construction method of thickened cement ready-mixed mortar according to claim 6, characterized in that: The constant pressure distributor (34) in the constant pressure pump spray unit (3) is a hemispherical cylindrical sealed steel tank with upper and lower ends, and a slurry inlet pipe (345) is installed in the lower half of the sealed steel tank, and the slurry inlet pipe The upper port of (345) is located in the middle of the sealed steel tank, the lower end of the slurry inlet pipe (345) passes through the steel tank and is connected to the feed valve (344), and the feed valve (344) is connected to the slurry delivery steel pipe (33) At the end port of the feed valve (344), there are 3 to 4 discharge valves (343) connected to the inside of the sealed steel tank, and each discharge valve (343) is equipped with a quick connector to seal the upper end of the steel tank It is equipped with a reverse buckle sealing inspection door (347) and a pressure sensor (341); the pressure sensor (341) is connected to the constant pressure controller (30) through a signal line (342).