CN111592129A

CN111592129A - Concrete mixing plant water circulation method and system

Info

Publication number: CN111592129A
Application number: CN202010447650.6A
Authority: CN
Inventors: 高信国
Original assignee: Qingdao Xinda Commercial Concrete Co ltd
Current assignee: Qingdao Xinda Commercial Concrete Co ltd
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2020-08-28

Abstract

The invention discloses a concrete mixing plant water circulation method and system, belonging to the technical field of concrete mixing plants.

Description

Concrete mixing plant water circulation method and system

Technical Field

The invention relates to the technical field of concrete mixing plants, in particular to a water circulation method and a water circulation system for a concrete mixing plant.

Background

At present, a concrete mixing plant often refers to a mixing plant body and a peripheral plant area thereof, and the concrete mixing plant is internally provided with equipment such as a stock bin, a car washing room, a dust falling device and the like besides the mixing plant body, wherein a plurality of equipment all need water and can generate equivalent waste water. The waste water produced by the concrete mixing plant usually contains only silt and is rarely mixed with other impurities, so that the waste water can be recycled by a plurality of mixing plants to be used as water added during concrete mixing.

In the prior art, reference may be made to chinese utility model patent with publication number CN207913371U, which discloses a concrete mixing plant wastewater circulation system, comprising a wastewater collection tank, a sand filtering tank communicated with the wastewater collection tank, the wastewater circulation system further comprising a sedimentation tank and a clarification tank, the sedimentation tank is divided into a first chamber and a second chamber by a filter plate, a mud content detector for detecting mud content in water and a clean water pump for delivering clean water to the clarification tank are arranged in the first chamber; a water inlet pipe communicated with the sand filtering pool and a sand pump for conveying sewage back to the sand filtering pool are arranged in the second chamber; the wastewater circulating system also comprises a controller electrically connected with the mud content detector, the clean water pump and the sediment pump.

The prior art can refer to the chinese utility model patent that the grant bulletin number is CN205925145U, and it discloses a concrete tank car washs sewage cyclic utilization device, including support frame, storage water tank, shale shaker, feeder hopper, stone play hopper and sand play hopper, storage water tank, shale shaker and feeder hopper set gradually on the support frame from bottom to top, are equipped with stone play hopper and sand play hopper in the lower one side of shale shaker.

The above prior art solutions have the following drawbacks: the main sources of waste water in the mixing plant are waste water generated when the mixing plant is cleaned, waste water generated when a car washing device washes a car and waste water collected in precipitation weather, and when the waste water is used everywhere in the mixing plant, the requirements for the waste water are different, and the workers are very troublesome in water circulation control.

Disclosure of Invention

The invention aims to provide a water circulation system of a concrete mixing plant, which can automatically perform automatic precipitation, filtration and distribution on waste water and save labor.

The technical purpose of the invention is realized by the following technical scheme:

a concrete mixing plant water circulation system comprises a mixing plant body, a car washing device, a spraying dust-settling device, a mixing wastewater collecting tank arranged at the mixing plant body, a car washing wastewater collecting tank arranged at the car washing device, a rainwater collecting tank, a sedimentation tank, a primary filtering tank and a secondary filtering tank arranged in a plant area, and further comprises a wastewater collecting system, a wastewater treatment system and a wastewater distribution system;

the wastewater collection system monitors the residual amount of wastewater in the stirring wastewater collection pool, the car washing wastewater collection pool and the rainwater collection pool and sends the residual amount of wastewater to the wastewater treatment system;

the wastewater distribution system receives an input instruction and generates a water supply instruction, the wastewater distribution system sends the water supply instruction to the wastewater treatment system, and the wastewater distribution system guides water in the sedimentation tank into the stirring station body, guides water in the primary filtering tank into the car washing device or guides water in the secondary filtering tank into the spray dust settling device according to the water supply instruction;

waste water processing system receives stirring waste water collecting pit, behind the waste water surplus in car wash waste water collecting pit and the rainwater collecting pit, contrast waste water surplus and setting value, when the waste water surplus exceedes the setting value, then will stir waste water collecting pit, the leading-in sedimentation tank of waste water in car wash waste water collecting pit and the rainwater collecting pit, after waste water processing system receives the water supply instruction, read the water supply target and the amount of supply among the water supply instruction, waste water processing system will be equal to the leading-in one-level of water in the sedimentation tank of the amount of supply and filter in the pond or will be equal to the leading-in one-level of water in the sedimentation tank of the amount of supply.

Through adopting above-mentioned scheme, stirring waste water collecting pit, car wash waste water collecting pit and rainwater collecting pit are used for collecting the waste water in the stirring station, waste water carries out preliminary sedimentation in the waste water pond, after hoarding a certain amount of waste water, waste water collection processing system deposits in leading-in sedimentation tank of waste water, the staff will deposit in the leading-in primary filter tank of water and the secondary filter tank, when the user water, waste water distribution system is automatic calls the sedimentation tank according to the user water consumption, the water in primary filter tank or the secondary filter tank, waste water treatment system can add water to primary filter tank and secondary filter tank according to the water consumption automatically, guarantee that waste water can each local use as far as possible, accomplish the automatic control to water circulation system, effectively save artifically.

The invention is further configured to: the sedimentation tank is fixedly connected with a first transmission pipe, the other end of the first transmission pipe is fixedly connected to the primary filtering tank, the first transmission pipe is fixedly connected with a first control valve, the primary filtering tank is fixedly connected with a second transmission pipe, the other end of the second transmission pipe is fixedly connected to the secondary filtering tank, and the second transmission pipe is fixedly connected with a second control valve;

the wastewater treatment system controls the first control valve and the second control valve according to the water supply target and the water supply amount in the water supply instruction.

Through adopting above-mentioned scheme, water flows to the primary filter pond in the sedimentation tank through first transmission pipe in, and water in the primary filter pond flows to the secondary filter pond through the second transmission pipe in, and first control valve and second control valve are used for controlling the break-make of first transmission pipe and second transmission pipe respectively.

The invention is further configured to: the device comprises a stirring waste water collecting tank, a car washing waste water collecting tank, a rainwater collecting tank, a sedimentation tank, a first-stage filtering tank, a second-stage filtering tank, a first water outlet pipe, a second water outlet pipe, a first spraying dust-settling device and a second spraying dust-settling device, wherein the stirring waste water collecting tank, the car washing waste water collecting tank and the rainwater collecting tank are fixedly connected with a drainage pipeline together;

the wastewater distribution system controls a stirring water supply pump, a car washing water supply pump and a dust fall water supply pump to work according to a water supply instruction;

and the wastewater treatment system judges that when the residual amount of the wastewater exceeds a set value, the electromagnetic valve is controlled to be opened.

Through adopting above-mentioned scheme, the distribution of the water in sedimentation tank, primary filter pond or the second grade filtering pond can be controlled through control stirring working shaft, carwash working shaft and dust fall working shaft to waste water distribution system, and waste water treatment system can open through waste water surplus automatic control solenoid valve and supply water in to the sedimentation tank.

The invention is further configured to: one-level filtering pond top fixedly connected with filter screen, second grade filtering pond top fixedly connected with filter, seted up the cavity in the filter, and the cavity intussuseption is filled with the active carbon, second grade filtering pond fixedly connected with medicine storage tank, medicine storage tank fixedly connected with adds the pencil, adds the pencil and passes the filter and go deep into in the second grade filtering pond, adds fixedly connected with medicine valve on the pencil.

By adopting the above technical scheme, the filter screen is used for once filtering water, filters the tiny particle impurity of aquatic, guarantees that the car washing device can not cause phenomenons such as stifled pipe or pollution automobile body when using circulating water washing vehicle. The filter can filter the material harmful to the human body of some aquatic through active carbon, adds the medicine again and carries out chemical water purification to the secondary filter pond in through adding the pencil, guarantees to spray dust device spun water and is harmless to the human body.

The invention is further configured to: the dosing pipe is fixedly connected with a flow meter, the wastewater treatment system stores a liquid medicine proportion calculation formula, the wastewater treatment system monitors the water storage amount in the secondary filter tank in real time, the wastewater treatment system records the water storage amount left after the water in the secondary filter tank is pumped out, and the water storage amount after the water in the primary filter tank is received by the secondary filter tank, the two storage amounts are subtracted to obtain the water addition amount, the wastewater treatment system calculates the dosage to be added according to the water addition amount and the liquid medicine proportion calculation formula, and the wastewater treatment system controls the dosing valve according to the dosage to be added and the counting number of the flow meter.

By adopting the scheme, the wastewater treatment system can automatically calculate the dosage to be added according to the water adding amount in the secondary filter tank, automatically complete the medicine adding and further reduce the manual work.

The invention is further configured to: the system also comprises a water quality detection system, wherein the water quality detection system comprises a turbidity meter arranged in the sedimentation tank, a first water quality conductivity sensor arranged in the primary filtering tank and a second water quality conductivity sensor arranged in the secondary filtering tank, the turbidity meter detects the turbidity of water in the sedimentation tank, and when the turbidity exceeds a first set value, the water quality detection system prevents the wastewater distribution module from guiding the water in the sedimentation tank into the stirring station body; the first water quality conductivity sensor detects the conductivity of the water in the primary filtering tank, and when the conductivity exceeds a second set value, the water quality detection system prevents the wastewater distribution module from guiding the water in the primary filtering tank into the car washing device; the second water quality conductivity sensor detects the conductivity of the water in the secondary filter tank, and when the conductivity exceeds a third set value, the water quality detection system prevents the wastewater distribution module from guiding the water in the secondary filter tank into the spray dust-settling device.

Through adopting above-mentioned scheme, quality of water in quality of water detection system can automated inspection sedimentation tank, primary filter tank or the second grade filtering ponds, guarantees that the circulating water can accord with the standard when using, avoids causing the problem because quality of water is unqualified.

The invention is further configured to: the dead slot has been seted up at the filter top, and the filter corresponds dead slot position department joint and has the apron, and the apron can cover the dead slot, has seted up the filtration pore on the apron.

Through adopting above-mentioned scheme, the user can change the active carbon in the filter through the apron.

The invention is further configured to: the apron edge sets firmly has elastic arch, and the filter corresponds protruding position department and sets up flutedly, and the arch can the joint in the recess, and the apron top sets firmly the handle.

Through adopting above-mentioned scheme, the handle user of being convenient for opens the apron, and filter chucking can be guaranteed on the apron to protruding and recess.

The invention aims to provide a water circulation method for a concrete mixing plant, which can automatically perform automatic precipitation, filtration and distribution on waste water and save labor.

a water circulation method of a concrete mixing plant comprises the following steps:

firstly, collecting waste water discharged by a mixing station body, waste water generated by car washing and natural rainfall;

secondly, discharging the collected wastewater into a sedimentation tank for sedimentation;

thirdly, guiding the precipitated water into a first-stage filtering tank and a second-stage filtering tank for filtering;

fourthly, the system monitors water used in the plant area, and when the stirring station body needs water and water exists in the sedimentation tank, the system automatically guides the water in the sedimentation tank into the stirring station body according to the requirement; when the car washing device needs water and water exists in the primary filtering tank, the system automatically guides the water in the primary filtering tank into the car washing device according to the requirement; when the spraying dust-settling device needs water and water exists in the secondary filtering tank, the system automatically guides the water in the secondary filtering tank into the spraying dust-settling device according to the requirement;

and fifthly, leading the water with the corresponding amount into the primary filtering tank or the secondary filtering tank by the system according to the amount of the water led out from the primary filtering tank or the secondary filtering tank.

By adopting the scheme, the method can ensure that the waste water can meet the use requirements of all places as much as possible, manual control of water circulation is not needed in the middle, automatic control of the water circulation system is completed, and labor is effectively saved.

The invention is further configured to: further comprising:

sixthly, the system monitors the water quality of the water in the sedimentation tank, the primary filtering tank and the secondary filtering tank, and prevents the water in the sedimentation tank, the primary filtering tank and the secondary filtering tank from being led out when the water quality does not reach the standard.

Through adopting above-mentioned scheme, the system can automated inspection sedimentation tank, the quality of water in first grade filtering ponds or the second grade filtering ponds, guarantees that the circulating water can accord with the standard when using, avoids causing the problem because quality of water is unqualified.

In conclusion, the invention has the following beneficial effects:

1. the stirring wastewater collection pool, the car washing wastewater collection pool and the rainwater collection pool are used for collecting wastewater in the stirring station, the wastewater is primarily precipitated in the wastewater pool, after a certain amount of wastewater is accumulated, the wastewater collection treatment system guides the wastewater into the precipitation pool for precipitation, a worker guides the precipitated water into the primary filtering pool and the secondary filtering pool, when a user uses water, the wastewater distribution system automatically calls the water in the precipitation pool, the primary filtering pool or the secondary filtering pool according to the water consumption of the user, the wastewater treatment system can automatically add water into the primary filtering pool and the secondary filtering pool according to the water consumption, the wastewater can be used in various places as far as possible, the automatic control of a water circulation system is completed, and the labor is effectively saved;

2. the water quality detection system can automatically detect the water quality in the sedimentation tank, the primary filter tank or the secondary filter tank, ensure that the circulating water can meet the standard when in use, and avoid the problem caused by unqualified water quality.

Drawings

FIG. 1 is a general schematic view of a first embodiment;

FIG. 2 is a schematic view of a sedimentation tank, a primary filtration tank and a secondary filtration tank according to the first embodiment;

FIG. 3 is a sectional view of a protruding sedimentation basin according to the first embodiment;

FIG. 4 is a sectional view of a protruded primary filtration tank in the first embodiment;

FIG. 5 is a sectional view of a protruded secondary filtration tank in the first embodiment;

FIG. 6 is a system diagram of a wastewater collection system, a wastewater treatment system, a wastewater distribution system, and a water quality detection system according to one embodiment.

In the figure, 1, a mixing station body; 11. stirring a wastewater collection tank; 2. a car washing device; 21. a car washing wastewater collecting tank; 3. a spray dust-settling device; 31. a rainwater collection tank; 4. a sedimentation tank; 41. a first transfer tube; 411. a first control valve; 42. a drain line; 421. an electromagnetic valve; 43. a sedimentation water outlet pipe; 431. a stirring water supply pump; 5. a primary filtering tank; 51. a second transfer pipe; 511. a second control valve; 52. a first water outlet pipe; 521. a water supply pump for washing the vehicle; 53. filtering with a screen; 6. a secondary filtering tank; 61. a second water outlet pipe; 611. a precipitation water supply pump; 62. a dust-settling water supply pump; 63. a filter plate; 631. a cavity; 632. activated carbon; 633; a through hole; 634. an empty groove; 635. a cover plate; 6351. a filtration pore; 6352. a handle; 6353. a protrusion; 636. a groove; 64. a medicine storage tank; 641. a medicine feeding pipe; 642. a dosing valve; 643. a flow meter; 7. a wastewater collection system; 8. a wastewater treatment system; 9. a wastewater distribution system; 91. a water quality detection system; 911. a turbidity meter; 912. a first water quality conductivity sensor; 913. a second water conductivity sensor.

Detailed Description

The first embodiment is as follows: a concrete mixing plant water circulation system is shown in figures 1 and 2 and comprises a mixing plant body 1, a car washing device 2, a spraying dust-settling device 3, a mixing wastewater collecting tank 11 arranged at the mixing plant body 1, a car washing wastewater collecting tank 21 arranged at the car washing device 2, a rainwater collecting tank 31 arranged in a plant area, a sedimentation tank 4, a primary filtering tank 5 and a secondary filtering tank 6. Stirring waste water collecting pit 11 is used for collecting the waste water that stirring station body 1 flows, and carwash waste water collecting pit 21 is used for collecting the waste water that carwash device 2 flows, and rainwater collecting pit 31 is used for collecting natural precipitation.

As shown in fig. 1 and 2, the mixing wastewater collection tank 11, the car washing wastewater collection tank 21 and the rainwater collection tank 31 are fixedly connected with a drain line 42, and the drain line 42 is fixedly connected to the sedimentation tank 4. The positions of the drain line 42, which are close to the stirring waste water collecting tank 11, the car washing waste water collecting tank 21 and the rainwater collecting tank 31, are all fixedly connected with electromagnetic valves 421. The sedimentation tank 4 is fixedly connected with a first transmission pipe 41, the other end of the first transmission pipe 41 is fixedly connected with the primary filtering tank 5, and the first transmission pipe 41 is fixedly connected with a first control valve 411. The primary filtering pool 5 is fixedly connected with a second delivery pipe 51, the other end of the second delivery pipe 51 is fixedly connected with the secondary filtering pool 6, and the second delivery pipe 51 is fixedly connected with a second control valve 511. Waste water in stirring waste water collecting pit 11, carwash waste water collecting pit 21 and the rainwater collecting pit 31 can get into sedimentation tank 4 through drain line 42, and water in sedimentation tank 4 can get into primary filter tank 5 through first transmission pipe 41, and water in primary filter tank 5 can get into secondary filter tank 6 through second transmission pipe 51.

As shown in fig. 1 and 2, the sedimentation tank 4 is fixedly connected with a sedimentation water outlet pipe 43, the other end of the sedimentation water outlet pipe 43 is fixedly connected to the stirring station body 1, and the sedimentation water outlet pipe 43 is fixedly connected with a stirring water supply pump 431. First water outlet pipe 52 is fixedly connected to primary filter tank 5, first water outlet pipe 52 is fixedly connected to car washing device 2, and first water outlet pipe 52 is fixedly connected to car washing water supply pump 521. The second-stage filter tank 6 is fixedly connected with a second water outlet pipe 61, the second water outlet pipe 61 is fixedly connected to the spraying dust-settling device 3, and the second water outlet pipe 61 is fixedly connected with a dust-settling water supply pump 62. The water in the settling tank 4 can be pumped into the mixing station body 1 through the settling outlet pipe 43 by the mixing water supply pump 431. The water in the primary filter tank 5 can be pumped into the car washer 2 through the first water outlet pipe 52 by the car wash water supply pump 521. The water in the secondary filter tank 6 can be pumped into the spray dedusting device 3 by the dedusting water supply pump 62 through the second water outlet pipe 61.

As shown in fig. 2 and 3, a turbidity meter 911 is provided in the sedimentation tank 4, and the turbidity meter 911 can detect the turbidity of water and transmit the turbidity.

As shown in fig. 2 and 4, a filter screen 53 is fixedly connected to the top of the primary filtering tank 5. The filter screen 53 is used for filtering water once, filtering small particle impurities in the water, and ensuring that the car washing device 2 cannot cause pipe blockage or pollute the car body when using circulating water to wash the car. A first water conductivity sensor 912 is arranged in the primary filtering tank 5, the first water conductivity sensor 912 can detect the conductivity of water, and the water quality can be detected through the conductivity of the water.

As shown in FIG. 5, a filter plate 63 is fixedly connected to the top of the secondary filter tank 6, a cavity 631 is formed in the filter plate 63, and activated carbon 632 is filled in the cavity 631. Empty slot 634 has been seted up at filter 63 top, and filter 63 corresponds empty slot 634 position department joint and has a apron 635, and apron 635 can cover empty slot 634. The edge of the cover plate 635 is fixedly provided with an elastic bulge 6353, the position of the filter plate 63 corresponding to the bulge 6353 is provided with a groove 636, and the bulge 6353 can be clamped in the groove 636. The cover plate 635 is provided with a filtering hole 6351. The medicine storage tank 64 is fixedly connected with a medicine feeding pipe 641, the medicine feeding pipe 641 penetrates through the filter plate 63 and extends into the secondary filter tank 6, and a medicine feeding valve 642 is fixedly connected to the medicine feeding pipe 641. A flow meter 643 is fixedly connected to the dosing tube 641. The filter 63 can filter the substances harmful to human body in a part of water through the active carbon 632, and adds chemical water into the secondary filter tank 6 through the chemical adding pipe 641, so that the water sprayed from the spray dust-settling device is harmless to human body. The user can replace the activated carbon 632 within filter plate 63 through cover plate 635.

As shown in fig. 6, the water circulation system of the concrete mixing plant further comprises a wastewater collection system 7, a wastewater treatment system 8, a wastewater distribution system 9 and a water quality detection system 91. The wastewater collection system 7 monitors the residual amount of wastewater in the stirring wastewater collection tank 11, the car washing wastewater collection tank 21 and the rainwater collection tank 31 and sends the residual amount of wastewater to the wastewater treatment system 8. The wastewater distribution system 9 receives the input command and generates a water supply command, and the wastewater distribution system 9 sends the water supply command to the wastewater treatment system 8. The wastewater distribution system 9 controls the operation of the agitation water supply pump 431, the car wash water supply pump 521 and the dustfall water supply pump 62 according to the water supply instruction. The wastewater treatment system 8 receives the residual amounts of wastewater in the stirring wastewater collection tank 11, the car washing wastewater collection tank 21 and the rainwater collection tank 31 and compares the residual amounts of wastewater with set values. When the residual amount of the wastewater exceeds a set value, all the electromagnetic valves 421 are controlled to be opened. After the wastewater treatment system 8 receives the water supply instruction, the water supply target and the water supply amount in the water supply instruction are read, the wastewater treatment system 8 controls the opening time of the first control valve 411 and the second control valve 511 according to the water supply target and the water supply amount in the water supply instruction, and the wastewater treatment system 8 guides the water in the sedimentation tank 4 equal to the water supply amount into the primary filtration tank 5 or guides the water in the sedimentation tank 4 equal to the water supply amount into the primary filtration tank 5. When the user uses water, the water in the sedimentation tank 4, the primary filter tank 5 or the secondary filter tank 6 is automatically called by the wastewater distribution system 9 according to the water consumption of the user, the wastewater treatment system 8 can automatically add water into the primary filter tank 5 and the secondary filter tank 6 according to the water consumption, the wastewater can be used in all places as far as possible, the automatic control of a water circulation system is completed, and the labor is effectively saved.

As shown in fig. 6, the water quality detection system 91 is connected to a turbidity meter 911, a first water quality conductivity sensor 912, and a second water quality conductivity sensor 913, and receives detected turbidity and conductivity. The water quality detection system 91 compares the turbidity with the first set value. When the turbidity exceeds the first set value, the water quality detection module prevents the wastewater distribution module from introducing the water in the settling tank 4 into the mixing station body 1, i.e., prevents the mixing water supply pump 431 from being started. The water quality detection system 91 compares the conductivity of the water in the primary filter tank 5 detected by the first water conductivity sensor 912 with a second preset value, and when the conductivity exceeds the second preset value, the water quality detection module prevents the wastewater distribution module from guiding the water in the primary filter tank 5 into the car washing device 2, i.e., prevents the car washing water supply pump 521 from being started. The water quality detection system 91 compares the conductivity of the water in the secondary filtration tank 6 detected by the second water conductivity sensor 913 with a third set value, and when the conductivity exceeds the third set value, the water quality detection module prevents the wastewater distribution module from introducing the water in the secondary filtration tank 6 into the spray dedusting apparatus 3, i.e., prevents the precipitation water supply pump 611 from being started.

As shown in fig. 6, the wastewater treatment system 8 stores a chemical proportion calculation formula, the wastewater treatment system 8 monitors the water storage amount in the secondary filter tank 6 in real time, the wastewater treatment system 8 records the water storage amount remaining after the water in the secondary filter tank 6 is pumped out, and the water storage amount after the secondary filter tank 6 receives the water in the primary filter tank 5, and the two are subtracted to obtain the water addition amount. The wastewater treatment system 8 calculates the dosage to be added according to a calculation formula of the addition amount of water and the liquid medicine proportion, and the wastewater treatment system 8 controls the dosing valve 642 according to the dosage to be added and the count of the flow meter 643. The wastewater treatment system 8 can automatically calculate the dosage to be added according to the water adding amount in the secondary filter tank 6, automatically complete the medicine adding and further reduce the manual work.

Embodiment two, a concrete mixing plant water circulation method, the concrete steps are as follows:

firstly, collecting waste water discharged by the mixing station body 1, waste water generated by car washing and natural precipitation.

Secondly, discharging the collected waste water into a sedimentation tank 4 for sedimentation.

And thirdly, guiding the precipitated water into a primary filtering tank 5 and a secondary filtering tank 6 for filtering.

Fourthly, the system monitors water in the plant area, and when the stirring station body 1 needs water and the sedimentation tank 4 is filled with water, the system automatically guides the water in the sedimentation tank 4 into the stirring station body 1 according to the requirement. When the car washing device 2 needs water and the primary filter tank 5 contains water, the system automatically guides the water in the primary filter tank 5 into the car washing device 2 according to the requirement. When spraying dust device 3 needs to use water and there is water in the second grade filtering ponds 6, the system is automatic leading-in spraying dust device 3 with the water in the second grade filtering ponds 6 according to the demand.

And fifthly, leading the water with the corresponding amount into the primary filtering tank 5 or the secondary filtering tank 6 by the system according to the amount of the water led out from the primary filtering tank 5 or the secondary filtering tank 6.

Sixthly, the system monitors the water quality of the water in the sedimentation tank 4, the primary filtering tank 5 and the secondary filtering tank 6, and when the water quality does not reach the standard, the water in the sedimentation tank 4, the primary filtering tank 5 and the secondary filtering tank 6 is prevented from being led out.

The system can automatically detect the water quality in the sedimentation tank 4, the primary filtering tank 5 or the secondary filtering tank 6, ensure that the circulating water can meet the standard when in use, and avoid the problem caused by unqualified water quality.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a concrete mixing plant water circulating system which characterized in that: the device comprises a stirring station body (1), a car washing device (2), a spraying dust-settling device (3), a stirring wastewater collecting tank (11) arranged at the stirring station body (1), a car washing wastewater collecting tank (21) arranged at the car washing device (2), a rainwater collecting tank (31) arranged in a factory area, a sedimentation tank (4), a primary filtering tank (5) and a secondary filtering tank (6), and further comprises a wastewater collecting system (7), a wastewater treatment system (8) and a wastewater distribution system (9);

the wastewater collection system (7) monitors and sends the residual amounts of wastewater in the stirring wastewater collection tank (11), the car washing wastewater collection tank (21) and the rainwater collection tank (31) to the wastewater treatment system (8);

the wastewater distribution system (9) receives an input instruction and generates a water supply instruction, the wastewater distribution system (9) sends the water supply instruction to the wastewater treatment system (8), and the wastewater distribution system (9) guides water in the sedimentation tank (4) into the mixing station body (1), guides water in the primary filtering tank (5) into the car washing device (2) or guides water in the secondary filtering tank (6) into the spraying and dust-settling device (3) according to the water supply instruction;

the waste water treatment system (8) receives and stirs waste water collecting pit (11), compare waste water surplus with the setting value behind the waste water surplus in car washing waste water collecting pit (21) and rainwater collecting pit (31), when the waste water surplus exceeds the setting value, then in leading-in sedimentation tank (4) of waste water in stirring waste water collecting pit (11), car washing waste water collecting pit (21) and the rainwater collecting pit (31), after waste water treatment system (8) received the water supply instruction, read water supply target and the water supply in the water supply instruction, waste water treatment system (8) will be equal to the leading-in one-level filtering pond (5) of water supply in sedimentation tank (4) or will be equal to the leading-in one-level filtering pond (5) of water supply in sedimentation tank (4).

2. The concrete batching plant water circulation system according to claim 1, characterized in that: the sedimentation tank (4) is fixedly connected with a first transmission pipe (41), the other end of the first transmission pipe (41) is fixedly connected to the primary filtering tank (5), the first transmission pipe (41) is fixedly connected with a first control valve (411), the primary filtering tank (5) is fixedly connected with a second transmission pipe (51), the other end of the second transmission pipe (51) is fixedly connected to the secondary filtering tank (6), and the second transmission pipe (51) is fixedly connected with a second control valve (511);

the wastewater treatment system (8) controls the first control valve (411) and the second control valve (511) according to the water supply target and the water supply amount in the water supply instruction.

3. The concrete batching plant water circulation system according to claim 1, characterized in that: the stirring wastewater collection tank (11), the car washing wastewater collection tank (21) and the rainwater collection tank (31) are fixedly connected with a drainage pipeline (42) together, the drainage pipeline (42) is fixedly connected to the sedimentation tank (4), the drainage pipeline (42) is close to the stirring wastewater collection tank (11), the car washing wastewater collection tank (21) and the rainwater collection tank (31) and is fixedly connected with an electromagnetic valve (421), the sedimentation tank (4) is fixedly connected with a sedimentation water outlet pipe (43), the other end of the sedimentation water outlet pipe (43) is fixedly connected to the stirring station body (1), the sedimentation water outlet pipe (43) is fixedly connected with a stirring water supply pump (431), the primary filtering tank (5) is fixedly connected with a first water outlet pipe (52), the first water outlet pipe (52) is fixedly connected to the car washing device (2), the first water outlet pipe (52) is fixedly connected with a car washing water supply pump (521), the secondary filtering tank (6) is fixedly connected with a second water outlet pipe, the second water outlet pipe (61) is fixedly connected to the spraying dust-settling device (3), and the second water outlet pipe (61) is fixedly connected with a dust-settling water supply pump (62);

the wastewater distribution system (9) controls the stirring water supply pump (431), the car washing water supply pump (521) and the dust fall water supply pump (62) to work according to a water supply instruction;

and the wastewater treatment system (8) judges that when the residual amount of the wastewater exceeds a set value, the electromagnetic valve (421) is controlled to be opened.

4. The concrete batching plant water circulation system according to claim 3, characterized in that: one-level filtering pond (5) top fixedly connected with filter screen (53), second grade filtering pond (6) top fixedly connected with filter (63), cavity (631) have been seted up in filter (63), and cavity (631) intussuseption is filled with active carbon (632), second grade filtering pond (6) fixedly connected with medicine storage tank (64), medicine storage tank (64) fixedly connected with adds pencil (641), add pencil (641) and pass filter (63) and go deep into in second grade filtering pond (6), add fixedly connected with on pencil (641) and add pencil (642).

5. The concrete batching plant water circulation system according to claim 4, wherein: a flow meter (643) is fixedly connected to the dosing pipe (641), a chemical proportion calculation formula is stored in the wastewater treatment system (8), the wastewater treatment system (8) monitors the water storage amount in the secondary filter tank (6) in real time, the wastewater treatment system (8) records the water storage amount left after the water in the secondary filter tank (6) is pumped out, the water storage amount after the secondary filter tank (6) receives the water in the primary filter tank (5) is subtracted, the addition amount of the water is obtained, the wastewater treatment system (8) calculates the dosage to be added according to the dosage of the water and the chemical proportion calculation formula, and the wastewater treatment system (8) controls the dosing valve (642) according to the dosage to be added and the count of the flow meter (643).

6. The concrete batching plant water circulation system according to claim 5, wherein: the water quality detection system (91) comprises a turbidity meter (911) arranged in the sedimentation tank (4), a first water quality conductivity sensor (912) arranged in the primary filtering tank (5) and a second water quality conductivity sensor (913) arranged in the secondary filtering tank (6), wherein the turbidity meter (911) detects the turbidity of the water in the sedimentation tank (4), and when the turbidity exceeds a first set value, the water quality detection system (91) prevents the wastewater distribution module from guiding the water in the sedimentation tank (4) into the mixing plant body (1); the first water quality and conductivity sensor (912) detects the conductivity of the water in the primary filter tank (5), and when the conductivity exceeds a second set value, the water quality detection system (91) prevents the wastewater distribution module from guiding the water in the primary filter tank (5) into the car washing device (2); a second water quality conductivity sensor (913) detects the conductivity of the water in the secondary filtration tank (6), and when the conductivity exceeds a third set value, the water quality detection system (91) prevents the wastewater distribution module from directing the water in the secondary filtration tank (6) into the spray dedusting apparatus (3).

7. The concrete batching plant water circulation system according to claim 4, wherein: empty slot (634) have been seted up at filter (63) top, and filter (63) correspond empty slot (634) position department joint has apron (635), and apron (635) can cover empty slot (634), has seted up on apron (635) and has filtered hole (6351).

8. The concrete batching plant water circulation system according to claim 7, wherein: apron (635) edge has set firmly has elastic arch (6353), and filter (63) correspond protruding (6353) position department and set up fluted (636), and arch (6353) can the joint in recess (636), and apron (635) top has set firmly handle (6352).

9. A water circulation method of a concrete mixing plant is characterized by comprising the following steps:

firstly, collecting waste water discharged by a mixing station body (1), waste water generated by car washing and natural rainfall;

secondly, discharging the collected wastewater into a sedimentation tank (4) for sedimentation;

thirdly, guiding the precipitated water into a first-stage filtering tank (5) and a second-stage filtering tank (6) for filtering;

fourthly, the system monitors water used in the plant area, and when the stirring station body (1) needs water and the sedimentation tank (4) contains water, the system automatically guides the water in the sedimentation tank (4) into the stirring station body (1) according to the requirement; when the car washing device (2) needs water and the primary filter tank (5) contains water, the system automatically guides the water in the primary filter tank (5) into the car washing device (2) according to the requirement; when the spraying and dust-settling device (3) needs water and the secondary filter tank (6) contains water, the system automatically guides the water in the secondary filter tank (6) into the spraying and dust-settling device (3) according to the requirement;

and fifthly, the system guides the water with the corresponding amount into the primary filtering tank (5) or the secondary filtering tank (6) according to the amount of the water guided out from the primary filtering tank (5) or the secondary filtering tank (6).

10. The water circulating method for a concrete mixing plant according to claim 9, further comprising:

sixthly, the system monitors the water quality of the water in the sedimentation tank (4), the primary filtering tank (5) and the secondary filtering tank (6), and when the water quality does not reach the standard, the water in the sedimentation tank (4), the primary filtering tank (5) and the secondary filtering tank (6) is prevented from being led out.