Wet concrete separation system
By designing a wet concrete separation system and utilizing multi-stage separation devices and control systems, the problem of low wastewater treatment efficiency in mixing plants has been solved, achieving efficient recycling of sand and gravel aggregates and resource reuse, thereby reducing environmental pollution and costs.
Patent Information
- Application Number
- CN202422959656.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-02
AI Technical Summary
Existing wastewater treatment methods are insufficient to meet the complex and diverse wastewater conditions at concrete mixing plants, leading to environmental pollution and resource waste.
A wet concrete separation system was designed, including a clear water tank, a discharge chute, a vibrating screen, a conveyor belt, a sedimentation tank, a hydrocyclone and a dewatering screen. The system achieves multi-stage separation of sand and gravel aggregates by using hydrocyclones connected in series and combining a mixing device and a control system.
It improves the efficiency of wet concrete separation, and the recovered sand and gravel aggregates can be reused in concrete production, reducing the extraction of natural resources, lowering costs, and reducing environmental pollution.
Smart Images
Figure CN223607127U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to concrete recycling technical field, especially relate to a wet concrete separation system. BACKGROUND
[0002] Under the background of the high-speed development of today's society, resource conservation, environmental protection and social sustainable development have become the focus of global attention. As a key material for social infrastructure construction, commercial concrete has ushered in rapid development. While the commercial concrete industry is developing rapidly, the wastewater problem produced by the mixing station is increasingly prominent. These wastewater sources are widespread, including cleaning of the remaining part after the tank truck delivers concrete, cleaning of the non-standard concrete due to operation errors, cleaning of other waste materials in the mixing station and site flushing process. These wastewater contains sand, cement and other conventional building materials. If they are directly discharged, not only will they cause serious pollution to the environment, but also will waste a lot of resources.
[0003] An effective wastewater treatment system must be equipped in the mixing station to treat the wastewater so that it can be discharged or recycled after meeting the national discharge standard. However, the existing wastewater treatment method cannot meet the complex and diverse wastewater conditions of the mixing station. Therefore, there is an urgent need for a wet concrete separation system to effectively separate wet concrete and improve the efficiency of the separation work. SUMMARY
[0004] In view of the deficiencies in the related art, the purpose of the utility model is to provide a wet concrete separation system to solve the problems raised in the background art.
[0005] To achieve the above purpose, the utility model provides the following technical scheme:
[0006] A wet concrete separation system comprises:
[0007] A clean water pool is provided with a first water pump and a sixth water pump;
[0008] A discharge chute is used to collect wet concrete;
[0009] A vibrating screen is arranged below the discharge port of the discharge chute, and the vibrating screen is used to separate stones. The spray pipeline of the vibrating screen is connected with the first water pump;
[0010] A conveying belt is provided with an inlet below the discharge port of the vibrating screen, and the outlet of the conveying belt is located above the stone bin;
[0011] A sand settling tank is provided with a second water pump;
[0012] A primary-secondary cyclone, the primary-secondary cyclone being in communication with the second water pump, the primary-secondary cyclone being configured to separate fine sand;
[0013] A dewatering screen, the dewatering screen being disposed below a discharge outlet of the primary-secondary cyclone, a sewage outlet of the dewatering screen being in communication with a water inlet of the grit chamber via a sewage pipeline, the discharge outlet of the dewatering screen being above the sand bin.
[0014] In some embodiments, the wet concrete separation system further comprises:
[0015] A mixing tank, the mixing tank being in communication with the sewage outlet of the primary-secondary cyclone, the mixing tank being provided with a third water pump and a fourth water pump, the third water pump being in communication with the discharge chute to flush the wet concrete in the discharge chute into the vibrating screen;
[0016] A finished slurry tank, the finished slurry tank being in communication with the fourth water pump via a sewage pipeline, the finished slurry tank being in communication with the sixth water pump via a clean water pipeline, the finished slurry tank being provided with a fifth water pump, the fifth water pump being in communication with the mixing station sewage scale via a sewage pipeline.
[0017] In some embodiments, the primary-secondary cyclone comprises at least two hydrocyclones, the at least two hydrocyclones having different diameters, the at least two hydrocyclones being connected in series from large to small in diameter, the largest-diameter hydrocyclone being in communication with the second water pump, the smallest-diameter hydrocyclone being in communication with the mixing tank via a sewage outlet.
[0018] In some embodiments, the wet concrete separation system further comprises a seventh water pump and a concentration tester device, the seventh water pump being disposed in the finished slurry tank, the seventh water pump being in communication with the concentration tester device.
[0019] In some embodiments, the wet concrete separation system further comprises an anti-clogging device, the anti-clogging device comprising:
[0020] A first pneumatic valve, the first pneumatic valve being disposed below the mixing tank and being in communication with the grit chamber via a sewage pipeline;
[0021] A second pneumatic valve, the second pneumatic valve being disposed below the finished slurry tank and being in communication with the grit chamber via a sewage pipeline;
[0022] An air compressor, the air compressor being in communication with the first pneumatic valve and the second pneumatic valve respectively.
[0023] In some embodiments, the wet concrete separation system further comprises a first stirring device and a second stirring device, the first stirring device comprising a first stirring member disposed in the mixing tank and a first driving member disposed above the mixing tank, an output shaft of the first stirring member being connected to an output shaft of the first driving member, the second stirring device comprising a second stirring member disposed in the finished slurry tank and a second driving member disposed above the finished slurry tank, an output shaft of the second stirring member being connected to an output shaft of the second driving member.
[0024] In some embodiments, the wet concrete separation system further comprises a first liquid level sensor and a second liquid level sensor, the first liquid level sensor is arranged in the mixing tank, and the second liquid level sensor is arranged in the finished slurry tank.
[0025] In some embodiments, the wet concrete separation system further comprises a controller, the controller is electrically connected with the vibrating screen, the first water pump, the second water pump, the third water pump, the fourth water pump, the fifth water pump, the sixth water pump, the seventh water pump, the conveying belt, the primary-secondary cyclone, the dewatering screen, the first driving member, the second driving member and the air compressor, and the controller is communicatively connected with the concentration tester device, the first liquid level sensor and the second liquid level sensor.
[0026] In some embodiments, the wet concrete separation system further comprises a control cabinet, and the controller is arranged in the control cabinet.
[0027] In some embodiments, a preset value of slurry water concentration is stored in the controller, so as to compare the slurry water concentration in the finished slurry tank measured by the concentration tester device with the preset value, and control the sixth water pump to be turned on or turned off according to the comparison result.
[0028] Compared with the prior art, the wet concrete separation system has the following beneficial effects:
[0029] 1. The wet concrete separation system comprises a clean water pool, a discharge chute, a vibrating screen, a conveying belt, a sand settling tank, a primary-secondary cyclone and a dewatering screen, has a simple structure, can effectively realize wet concrete separation, and improves the efficiency of separation work.
[0030] 2. The primary-secondary cyclone of the wet concrete separation system comprises at least two hydraulic cyclones with different diameters and connected in series, efficient classification and fine separation are realized through series combination, the wet concrete separation system is widely applicable in various occasions, the classification efficiency is effectively improved, the operation index is stable, and finer particles are accurately removed.
[0031] 3. The wet concrete separation system can effectively separate a large amount of aggregates such as sand and gravel contained in wet concrete, the recycled sand and gravel aggregates can be reused for concrete production, the exploitation of natural resources is reduced, the damage to the environment is reduced, and the raw material procurement cost is saved. BRIEF DESCRIPTION OF DRAWINGS
[0032] The drawings described herein are used to provide further understanding of the present application, constitute a part of the present application, and the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:
[0033] Fig. 1 FIG. 1 is a structural schematic view of an embodiment of the wet concrete separation system of the present application.
[0034] Fig. 2 The control principle block diagram of one embodiment of the wet concrete separation system of the utility model;
[0035] Fig. 3 The working flow chart of one embodiment of the wet concrete separation system of the utility model.
[0036] In the drawing:
[0037] 1, clean water pool; 2, unloading groove; 3, vibrating screen; 4, conveying belt; 5, sand pool; 6, sub-mother cyclone; 7, dewatering screen; 8, stirring tank; 9, finished product slurry tank; 10, first water pump; 11, second water pump; 12, third water pump; 13, fourth water pump; 14, fifth water pump; 15, sixth water pump; 16, seventh water pump; 17, stone bin; 18, sand bin; 19, stirring station sewage scale; 20, concentration tester device; 21, anti-overflow device; 211, first pneumatic valve; 212, second pneumatic valve; 213, air compressor; 22, first stirring device; 221, first stirring part; 222, first driving part; 23, second stirring device; 231, second stirring part; 232, second driving part; 24, first liquid level sensor; 25, second liquid level sensor; 26, controller; 261, control cabinet. DETAILED DESCRIPTION
[0038] The technical solutions in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0039] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.
[0040] In the description of the utility model, it is necessary to explain that, unless another explicit provision and limitation, the term "installation", "connection", "connect" should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be direct connection, also can be indirectly connected through the intermediate medium, can be two elements inside the communication, for the ordinary skill in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to the specific circumstances.
[0041] Referring to the accompanying drawings Figs. 1 to 3 An illustrative embodiment of the wet concrete separation system is shown, which comprises a clean water tank 1, a discharge chute 2, a vibrating screen 3, a conveying belt 4, a sand settling tank 5, a primary-secondary cyclone 6 and a dehydration screen 7.
[0042] The discharge chute 2 is used to collect wet concrete. Specifically, after the concrete mixer truck with remaining concrete returns to the mixing station, it enters the front of the discharge chute 2. The concrete mixer truck is parked at the designated position, and the driver stops to add water to the concrete mixer truck. After the water is added, the operator pours the wet concrete waste in the concrete mixer truck into the discharge chute 2.
[0043] The first water pump 10 and the sixth water pump 15 are arranged in the clean water tank 1. The vibrating screen 3 is arranged below the discharge port of the discharge chute 2, so that the wet concrete discharged from the discharge port of the discharge chute 2 falls into the vibrating screen 3. The vibrating screen 3 is used to separate the stones in the wet concrete. The spray pipeline of the vibrating screen 3 is connected with the first water pump 10. The first water pump 10 is started to fully clean the stones separated by the vibrating screen 3. The inlet of the conveying belt 4 is arranged below the discharge port of the vibrating screen 3, and the discharge port of the conveying belt 4 is located above the stone bin 17, so as to send the stones into the stone bin 17 through the conveying belt 4. The water inlet of the sand settling tank 5 is connected with the sewage outlet of the vibrating screen 3 through the sewage pipeline, so that the sand-containing mortar water after cleaning the stones enters the sand settling tank 5. The second water pump 11 is arranged in the sand settling tank 5. The second water pump 11 is connected with the primary-secondary cyclone 6, and is used to pump the sand-containing mortar water into the primary-secondary cyclone 6. The primary-secondary cyclone 6 is used to separate fine sand. Specifically, the primary-secondary cyclone 6 performs spin washing to obtain water-containing fine sand and low-concentration sewage. The dehydration screen 7 is arranged below the discharge port of the primary-secondary cyclone 6. The discharge port of the dehydration screen 7 is located above the sand bin 18. The water-containing fine sand enters the dehydration screen 7 and removes most of the water through the dehydration screen 7. Finally, the fine sand enters the sand bin 18 for storage. The sewage outlet of the dehydration screen 7 is connected with the water inlet of the sand settling tank 5 through the sewage pipeline, so that the sewage enters the sand settling tank 5 again to enter the circulation.
[0044] In order to make full use of the wastewater generated in the process of wet concrete separation, the wet concrete separation system further comprises a mixing tank 8 and a finished slurry tank 9 in the embodiment. The mixing tank 8 is connected with the wastewater outlet of the sub-mother cyclone 6, so that the low-concentration wastewater obtained by the sub-mother cyclone 6 is introduced into the mixing tank 8 and can be used as the wastewater source of the wet concrete separation system to flush the discharge chute 2. The third water pump 12 and the fourth water pump 13 are arranged in the mixing tank 8, and the third water pump 12 is connected with the discharge chute 2 to flush the wet concrete in the discharge chute 2 into the vibrating screen 3 by using the wastewater source. The finished slurry tank 9 is connected with the fourth water pump 13 through a wastewater pipeline, and the fourth water pump 13 is used to transport the wastewater in the mixing tank 8 to the finished slurry tank 9. The finished slurry tank 9 is connected with the sixth water pump 15 through a clean water pipeline, and the sixth water pump 15 is used to supplement clean water into the finished slurry tank 9. The fifth water pump 14 is arranged in the finished slurry tank 9, and the fifth water pump 14 is connected with the mixing station wastewater scale 19 through a wastewater pipeline. When the concrete production is performed, the fifth water pump 14 is started to transport the wastewater of a set concentration in the finished slurry tank 9 to the mixing station wastewater scale 19, so that the wastewater is recycled.
[0045] In some embodiments, the sub-mother cyclone 6 comprises at least two hydrocyclones, the diameters of the at least two hydrocyclones are different, the at least two hydrocyclones are connected in series from large to small in diameter, the largest-diameter hydrocyclone is connected with the second water pump 11, and the wastewater outlet of the smallest-diameter hydrocyclone is connected with the mixing tank 8, and the dewatering screen 7 is arranged below the discharge port of the smallest-diameter hydrocyclone. In the embodiment, the sub-mother cyclone 6 comprises two hydrocyclones. Most of the coarse particles in the sand slurry water are separated by the first-stage large-diameter mother cyclone, and the overflow is directly introduced into the second-stage small-diameter sub-cyclone for secondary classification, so that the classification efficiency is improved and the stability of the operation index is maintained. The sub-mother cyclone 6 has the characteristics of high-efficiency classification, fine separation and wide application range. Through the series combination, the sub-mother cyclone 6 can improve the classification efficiency and ensure the stability of the operation index. The sub-cyclone performs fine separation under the remaining pressure, and can remove finer particles, so that the wet concrete separation system of the embodiment can be applied to various occasions requiring high-efficiency classification and removal of fine particles.
[0046] In order to monitor the concentration of the slurry water in the finished slurry tank 9, the wet concrete separation system further comprises a seventh water pump 16 and a concentration tester device 20 in the embodiment. The seventh water pump 16 is arranged in the finished slurry tank 9, and the seventh water pump 16 is connected with the concentration tester device 20. The seventh water pump 16 is used to pump the slurry water in the finished slurry tank 9 into the concentration tester device 20 for slurry water concentration detection.
[0047] The wet concrete separation system further comprises an anti-deposition device 21, which comprises a first pneumatic valve 211, a second pneumatic valve 212 and an air compressor 213. The first pneumatic valve 211 is arranged below the mixing tank 8 and is connected to the grit chamber 5 through a sewage pipeline. The second pneumatic valve 212 is arranged below the finished slurry tank 9 and is connected to the grit chamber 5 through a sewage pipeline. The air compressor 213 is connected to the first pneumatic valve 211 and the second pneumatic valve 212 to provide air source. When the equipment is on standby, the first pneumatic valve 211 and the second pneumatic valve 212 are opened periodically to reflow the sewage with high concentration at the bottom of the mixing tank 8 and the finished slurry tank 9 into the grit chamber 5 through the pipeline.
[0048] The arrangement of the anti-deposition device 21 can effectively prevent deposition, keep the pipeline unobstructed and the tank with normal capacity, ensure the stable and efficient flow and treatment of sewage, avoid system failure and maintenance caused by reduced flow or blockage, ensure the continuity of production and operation, and reduce economic losses caused by shutdown.
[0049] The wet concrete separation system further comprises a first stirring device 22 and a second stirring device 23. The first stirring device 22 comprises a first stirring element 221 arranged in the mixing tank 8 and a first driving element 222 arranged above the mixing tank 8, and the output shafts of the first stirring element 221 and the first driving element 222 are connected. The second stirring device 23 comprises a second stirring element 231 arranged in the finished slurry tank 9 and a second driving element 232 arranged above the finished slurry tank 9, and the output shafts of the second stirring element 231 and the second driving element 232 are connected. The first stirring device 22 and the second stirring device 23 are started intermittently to drive the sewage in the mixing tank 8 and the finished slurry tank 9 to rotate, preventing sedimentation.
[0050] The wet concrete separation system further comprises a first liquid level sensor 24 and a second liquid level sensor 25. The first liquid level sensor 24 is arranged in the mixing tank 8, and the second liquid level sensor 25 is arranged in the finished slurry tank 9. The first liquid level sensor 24 and the second liquid level sensor 25 are used to monitor the liquid level in the mixing tank 8 and the finished slurry tank 9.
[0051] The wet concrete separation system further comprises a controller 26, which is electrically connected to the vibrating screen 3, the first water pump 10, the second water pump 11, the third water pump 12, the fourth water pump 13, the fifth water pump 14, the sixth water pump 15, the seventh water pump 16, the conveying belt 4, the primary-secondary cyclone 6, the dewatering screen 7, the first driving element 222, the second driving element 232 and the air compressor 213, and is communicatively connected to the concentration tester device 20, the first liquid level sensor 24 and the second liquid level sensor 25.
[0052] The wet concrete separation system further comprises a control cabinet 261, and the controller 26 is arranged in the control cabinet 261.
[0053] The controller 26 and the concentration tester device 20 work in cooperation, specifically, the controller 26 stores a preset value of the slurry concentration, compares the slurry concentration in the finished product slurry tank 9 measured by the concentration tester device 20 with the preset value, and controls the sixth water pump 15 to be opened or closed according to the comparison result.
[0054] In the above-mentioned illustrative embodiment, the wet concrete separation system is composed of a clean water pool, a discharge chute, a vibrating screen, a conveying belt, a sand pool, a primary-secondary cyclone and a dehydration screen, has a simple structure, can effectively realize the separation of wet concrete, and improve the efficiency of the separation work.
[0055] It should be finally pointed out that: the various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.
[0056] The above embodiments are only used to illustrate the technical scheme of the present application but not limit it; although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the specific implementation of the present application can be modified or some technical features can be replaced by the equivalent; without departing from the spirit of the technical scheme of the present application, they should be covered in the technical scheme range of the present application claimed for protection.
Claims
1. A wet concrete separation system, characterized in that, The application relates to a wet concrete production system. The system comprises: a clean water tank, which is internally provided with a first water pump and a sixth water pump; a discharge chute, which collects wet concrete; a vibrating screen, which is arranged below a discharge port of the discharge chute and is used to separate stones, and a spray pipeline of the vibrating screen is communicated with the first water pump; a conveying belt, which is provided with an inlet arranged below a discharge port of the vibrating screen and an outlet arranged above a stone bin; a sand settling tank, which is provided with a second water pump and is communicated with a sewage outlet of the vibrating screen through a sewage pipeline; a primary-secondary cyclone, which is communicated with the second water pump and is used to separate fine sand; 2. The wet cast concrete separation system of claim 1, wherein, a dehydration screen, which is arranged below a discharge port of the primary-secondary cyclone, a sewage outlet of the dehydration screen is communicated with a water inlet of the sand settling tank through a sewage pipeline, and a discharge port of the dehydration screen is arranged above a sand bin. The system further comprises: a mixing tank, which is communicated with a sewage outlet of the primary-secondary cyclone and is internally provided with a third water pump and a fourth water pump, the third water pump is communicated with the discharge chute so as to flush wet concrete in the discharge chute into the vibrating screen; 3. The wet concrete separation system of claim 2, wherein, a finished slurry tank, which is communicated with the fourth water pump through a sewage pipeline, is communicated with the sixth water pump through a clean water pipeline, is internally provided with a fifth water pump, and is communicated with a sewage scale of a mixing station through a sewage pipeline.
4. The wet cast concrete separation system of claim 2, wherein, The primary-secondary cyclone comprises at least two hydraulic cyclones, the at least two hydraulic cyclones are different in diameter, the at least two hydraulic cyclones are connected in series from large to small in diameter, a largest-diameter hydraulic cyclone is communicated with the second water pump, and a smallest-diameter hydraulic cyclone is communicated with the mixing tank through a sewage outlet.
5. The wet concrete separation system of claim 4, wherein, The system further comprises a seventh water pump and a concentration tester device, the seventh water pump is arranged in the finished slurry tank and is communicated with the concentration tester device. The system further comprises a prevention device, which comprises: a first pneumatic valve, which is arranged below the mixing tank and is communicated with the sand settling tank through a sewage pipeline; a second pneumatic valve, which is arranged below the finished slurry tank and is communicated with the sand settling tank through a sewage pipeline; 6. The wet concrete separation system of claim 5, wherein, an air compressor, which is communicated with the first pneumatic valve and the second pneumatic valve respectively.
7. The wet cast concrete separation system of claim 6, wherein, The system further comprises a first stirring device and a second stirring device, the first stirring device comprises a first stirring member arranged in the mixing tank and a first driving member arranged above the mixing tank, an output shaft of the first stirring member is connected with the first driving member, the second stirring device comprises a second stirring member arranged in the finished slurry tank and a second driving member arranged above the finished slurry tank, and an output shaft of the second stirring member is connected with the second driving member. The system further comprises a first liquid level sensor and a second liquid level sensor, the first liquid level sensor is arranged in the mixing tank, and the second liquid level sensor is arranged in the finished slurry tank.
8. The wet cast concrete separation system of claim 7, wherein, The controller is electrically connected with the vibrating screen, the first water pump, the second water pump, the third water pump, the fourth water pump, the fifth water pump, the sixth water pump, the seventh water pump, the conveying belt, the primary-secondary cyclone, the dewatering screen, the first driving member, the second driving member and the air compressor respectively, and is in communication connection with the concentration tester device, the first liquid level sensor and the second liquid level sensor respectively.
9. The wet cast concrete separation system of claim 8, wherein, The control cabinet is further provided, and the controller is arranged in the control cabinet.
10. The wet cast concrete separation system of claim 8, wherein, The preset value of the pulp water concentration is stored in the controller, so as to compare the pulp water concentration in the finished product slurry tank measured by the concentration tester device with the preset value, and control the opening or closing of the sixth water pump according to the comparison result.