Slurry treatment system for construction waste treatment workshop

Abstract

The invention discloses a slurry treatment system for a construction waste treatment workshop, the treatment system can separate six materials such as aggregate, coarse aggregate, fine aggregate, organic matters, filter-pressed mud cakes and clear water from construction waste residue soil, treatment paths in the treatment system are mutually crosslinked, so that each material is separated for multiple times, the purity of each material is ensured, and the treatment efficiency is improved. The whole treatment system is clear in process, all units are closely connected, and a complete closed-loop treatment chain is formed. And each step from muck pretreatment to final product output is elaborately designed, so that the treatment efficiency and the treatment quality are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of construction waste treatment systems, and in particular to a mud treatment system for a construction waste treatment workshop. Background Art

[0002] With the acceleration of urbanization, the annual production of construction waste has reached an alarming figure, and its efficient resource processing has become an urgent need for environmental protection and sustainable development. The current treatment technology for construction waste has the following bottlenecks: 1. Single sorting dimension: Traditional processes mostly rely on simple screening or hydrocyclones, which can only separate one or two types of products, and cannot achieve fine sorting of coarse / fine aggregates, organic matter, and mud cakes; 2. Low product quality: The purity of the sorted materials is not high enough to meet the application requirements of high-grade building materials; 3. Insufficient resource recovery rate: Due to the lack of sorting levels, 30-40% of the available aggregates in the slag are discarded with the mud, resulting in a waste of resources. Summary of the invention

[0003] In view of this, the present invention proposes a slurry treatment system for a construction waste treatment workshop, aiming to achieve one-time multi-level treatment of construction waste slag.

[0004] The solution provided by the present invention includes:

[0005] A slurry treatment system for a construction waste treatment workshop, characterized by comprising:

[0006] A slag pretreatment unit, a first separation unit, a second separation unit, a third separation unit and a cross-linking separation unit;

[0007] The slag pretreatment unit includes, in order of treatment, a slurry mixing tank, a drum stone washer, a residual mud tank and a three-layer vibrating screen, wherein the three-layer vibrating screen includes a first-layer screening mechanism for outputting a first material, a second-layer screening mechanism for outputting a second material, and a third-layer screening mechanism for outputting a third material;

[0008] The first separation unit comprises a first conveyor, and the first conveyor is connected to the output end of the first layer screening mechanism;

[0009] The second separation unit includes a spiral sand washer, a bucket sand washer, a coarse sand recovery machine and a second conveyor in the processing order; the spiral sand washer is connected to the output end of the second layer screening mechanism;

[0010] The third separation unit includes a first circulation tank, a first cyclone and a pure mud tank in the processing order; the first circulation tank is connected to the third layer screening mechanism;

[0011] The cross-linking separation unit includes a second circulation pool, a double-layer vibrating screen, and a fine sand recovery machine; the input end of the second circulation pool is connected to the spiral sand washing machine and the coarse sand recovery machine, the output end of the second circulation pool is respectively connected to the double-layer vibrating screen and the fine sand recovery machine, the input end of the fine sand recovery machine is also connected to the output end of the first cyclone, and the output end of the fine sand recovery machine is connected to the pure mud pool.

[0012] As a further optional scheme, the cross-linking separation unit also includes a second cyclone, the input end of the second cyclone is connected to the second circulation pool, the output end of the second cyclone is connected to the double-layer vibrating screen, and the other output end of the second cyclone is connected to the wheel bucket sand washing machine.

[0013] As a further optional solution, a plurality of the second cyclones are arranged in parallel.

[0014] As a further optional solution, the cross-linking separation unit also includes a third cyclone, the input end of the third cyclone is connected to the second circulation pool, the output end of the third cyclone is connected to the fine sand recovery machine, and the other output end of the third cyclone is connected to the wheel bucket sand washing machine.

[0015] As a further optional solution, a plurality of the third cyclones are arranged in series.

[0016] As a further optional solution, the cross-linking separation unit further includes a fourth cyclone, an input end of the fourth cyclone is connected to the fine sand recovery machine, and an output end of the fourth cyclone is connected to the double-layer vibrating screen.

[0017] As a further optional solution, the cross-linking separation unit also includes a sedimentation tank, an input end of the sedimentation tank is connected to the double-layer vibrating screen, an output end of the sedimentation tank is connected to the pure mud tank, and the other output end of the sedimentation tank is connected to a clean water tank.

[0018] As a further optional solution, a plurality of first cyclones are arranged in series.

[0019] As a further optional solution, the slag pretreatment unit also includes a slurry unloading platform for slurry.

[0020] As a further optional solution, the slag pretreatment unit also includes a chain feeder, and the output end of the chain feeder is connected to the drum stone washing machine; an output end of the drum stone washing machine is connected to a third conveyor.

[0021] Compared with the prior art, the construction waste treatment workshop mud treatment system of the present application has at least the following beneficial effects:

[0022] The treatment system can separate construction waste into six materials: aggregate, coarse aggregate, fine aggregate, organic matter, filter cake and clean water. The treatment paths in the treatment system are interconnected, so that each material is separated multiple times to ensure the purity of each material. The entire treatment system has a clear process and each unit is closely connected to form a complete closed-loop treatment chain. From the pretreatment of the slag to the output of the final product, each step has been carefully designed to ensure the treatment efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a top view of a mud treatment system for a construction waste treatment workshop according to an embodiment of the present invention;

[0024] Figure 2 is a top view of a slag pretreatment unit in an embodiment of the present invention;

[0025] Figure 3 is a schematic structural diagram of a cross-linking separation unit in an embodiment of the present invention;

[0026] Figure 4 is a flow chart of a slag pretreatment unit in an embodiment of the present invention;

[0027] Figure 5 is a flow chart of the first separation unit, the second separation unit, the third separation unit and the cross-linking separation unit in an embodiment of the present invention;

[0028] In the figure: 100, slag pretreatment unit; 110, slurry mixing tank; 120, drum stone washing machine; 130, residual mud main tank; 140, three-layer vibrating screen; 150, chain plate feeder; 160, third conveyor; 170, slurry unloading platform;

[0029] 200, first separation unit; 210, first conveyor;

[0030] 300, second separation unit; 310, spiral sand washing machine; 320, bucket sand washing machine; 330, coarse sand recovery machine; 340, second conveyor;

[0031] 400, third separation unit; 410, first circulation pool; 420, first cyclone; 430, pure mud pool;

[0032] 500, cross-linking separation unit; 510, second circulation tank; 520, double-layer vibrating screen; 530, fine sand recovery machine; 540, second cyclone; 550, third cyclone; 560, fourth cyclone; 570, sedimentation tank. DETAILED DESCRIPTION

[0033] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0034] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] refer to Figure 1-5 An embodiment of the present invention shows a slurry treatment system for a construction waste treatment workshop, including a slag pretreatment unit 100 , a first separation unit 200 , a second separation unit 300 , a third separation unit 400 and a cross-linking separation unit 500 .

[0038] Among them, the processing system can separate construction waste into six materials, namely, aggregate, coarse aggregate, fine aggregate, organic matter, filter press mud cake and clean water; in this embodiment, aggregates are such as 40-100mm concrete blocks, bricks, and large rocks; coarse aggregates are such as 10-40mm crushed rocks and gravel; fine aggregates are such as 0.075-10mm natural sand, machine-made sand, and clean fine particles in slag; filter press mud cake is mainly clay, silt, and colloidal particles with a particle size of less than 0.075mm; organic matter is such as wood chips and other floating objects on the surface of the mud.

[0039] For the pretreatment of slag, refer to Figure 2 and Figure 4 The slag pretreatment unit 100 includes a slurry mixing tank 110, a drum stone washer 120, a residual mud tank 130 and a three-layer vibrating screen 140 in the processing order, and the three-layer vibrating screen 140 includes a first-layer screening mechanism for outputting a first material, a second-layer screening mechanism for outputting a second material, and a third-layer screening mechanism for outputting a third material;

[0040] The slag is introduced into the slurry mixing tank 110 in advance, and is transformed into a fluid material state that is easy to control through hydraulic mixing and physical stirring. Specifically, the clay lumps and compacted particles in the slag are broken up through high-pressure water gun spraying combined with mechanical stirring, and the impurities contained are released, and the mixing ratio of water and slag is controlled (usually the water-to-material ratio is 1:3-1:5) to form a mud with moderate fluidity (solid content 15-30%).

[0041] Afterwards, the mud formed in the slurry tank 110 is introduced into the drum stone washer 120, and the aggregate in the mud is screened out by the drum stone washer 120, and the drum stone washer 120 introduces the mud after the aggregate is screened out into the residual mud total tank 130. The residual mud total tank 130 can store the mud formed by the slag, and the residual mud total tank 130 can subsequently output the mud to the three-layer vibrating screen 140. The three-layer vibrating screen 140 includes a first layer screening mechanism, a second layer screening mechanism and a third layer screening mechanism. According to different screens, the first material, the second material and the third material can be screened out.

[0042] Among them, the first material is aggregate; the second material mainly includes coarse aggregate, fine aggregate, organic matter and a small amount of pure mud; the third material mainly includes pure mud, a small amount of fine aggregate and a small amount of organic matter.

[0043] like Figure 3 and Figure 5 As shown, the first material (aggregate) enters the first separation unit 200 and is sent out through the first conveyor 210; in other words, the aggregate has two separation channels, one is separated from the drum stone washing machine 120, and the other is separated by the first screening mechanism of the three-layer vibrating screen 140 and output by the first separation unit 200.

[0044] like Figure 3 and Figure 5As shown, the second material enters the second separation unit 300 and is first separated by the spiral sand washing machine 310. The spiral sand washing machine 310 can separate most of the mud in the second material, and the separated mud is transported to the second circulation pool 510; then the spiral sand washing machine 310 outputs the processed remaining materials (mainly coarse aggregate, fine aggregate and organic matter) to the bucket sand washing machine 320 for further separation, and then the coarse aggregate is recovered by the coarse sand recovery machine 330. The coarse aggregate separated by the coarse sand recovery machine 330 is sent away by the second conveyor 340, thereby obtaining the coarse aggregate.

[0045] like Figure 3 and Figure 5 As shown, the third material enters the third separation unit 400, first enters the first circulation pool 410, and then passes through the first cyclone 420 for separation, and the fine aggregate and organic matter in the third material are separated, and then the remaining pure mud is introduced into the pure mud pool 430. The pure mud stored in the pure mud pool 430 can be subjected to filter press treatment to obtain a filter cake. In order to improve efficiency, the first cyclone 420 can be provided in series with multiple.

[0046] The materials separated in the second separation unit 300 and the third separation unit 400 will enter the cross-linking separation unit 500; specifically, except for the coarse aggregate in the coarse sand recovery machine 330, the remaining materials are transported to the second circulation pool 510, the sedimentation part in the second circulation pool 510 will be transported to the fine sand recovery machine 530, and the floating part in the second circulation pool 510 will be transported to the double-layer vibrating screen 520, wherein the sedimentation part in the second circulation pool 510 is mainly fine aggregate and pure mud, and the floating part is mainly organic matter and pure mud; the fine sand recovery machine 530 can separate the fine aggregate and the pure mud, and then transport the pure mud to the pure mud pool 430, and output the fine aggregate; the double-layer vibrating screen 520 can separate the organic matter and the pure mud, and then transport the pure mud to the pure mud pool 430, and output the organic matter;

[0047] In some preferred embodiments, in order to improve the purity of material separation, Figure 5 As shown, the cross-linking separation unit 500 further includes a second cyclone 540, the input end of the second cyclone 540 is connected to the second circulation pool 510, the output end of the second cyclone 540 is connected to the double-layer vibrating screen 520, and the other output end of the second cyclone 540 is connected to the bucket sand washer 320. To improve efficiency, a plurality of second cyclones 540 may be arranged in parallel.

[0048] Among them, the floating part of the second circulation pool 510 first enters the second cyclone 540 for separation. The second cyclone 540 can separate a small amount of fine aggregate and a small amount of coarse aggregate that may be contained, and transport the separated fine aggregate and coarse aggregate to the bucket sand washing machine 320 for washing and grading, thereby ensuring the separation effect of the coarse aggregate in the second separation unit 300, and is also beneficial to the separation effect of the subsequent double-layer vibrating screen 520.

[0049] In some preferred embodiments, the cross-linking separation unit 500 further includes a third cyclone 550, an input end of the third cyclone 550 is connected to the second circulation pool 510, an output end of the third cyclone 550 is connected to the fine sand recovery machine 530, and another output end of the third cyclone 550 is connected to the bucket sand washer 320. To improve efficiency, a plurality of the third cyclones 550 are arranged in series.

[0050] Among them, the sedimentation part of the second circulation pool 510 first enters the third cyclone 550 for separation. The third cyclone 550 can separate out a small amount of coarse aggregate that may be contained, and transport the separated coarse aggregate to the wheel bucket sand washing machine 320, so as to ensure the separation effect of the coarse aggregate in the second separation unit 300, and also facilitate the separation effect of the subsequent fine sand recovery machine 530.

[0051] In some preferred embodiments, the cross-linking separation unit 500 further includes a fourth cyclone 560 , an input end of the fourth cyclone 560 is connected to the fine sand recovery machine 530 , and an output end of the fourth cyclone 560 is connected to the double-layer vibrating screen 520 .

[0052] Among them, after the fine sand recovery machine 530 separates the pure mud, the remaining material may contain a small amount of organic matter in addition to fine aggregate. The organic matter can be separated by the fourth cyclone 560 and transported to the double-layer vibrating screen 520, thus ensuring the separation effect of fine aggregate and organic matter.

[0053] In some preferred embodiments, the cross-linking separation unit 500 also includes a sedimentation tank 570, an input end of the sedimentation tank 570 is connected to the double-layer vibrating screen 520, an output end of the sedimentation tank 570 is connected to the pure mud pool 430, and the other output end of the sedimentation tank 570 is connected to a clean water pool.

[0054] The pure mud screened out by the double-layer vibrating screen 520 is first introduced into the sedimentation tank 570 for sedimentation separation, the separated clean water is introduced into the clean water tank, and the precipitated pure mud is introduced into the pure mud tank 430, so that the water content of the pure mud in the pure mud tank 430 can be reduced. Figure 1 As shown, the clean water obtained is transported to the fire water pump room for fire fighting purposes.

[0055] In some preferred embodiments, Figure 1 , Figure 2 and Figure 4 As shown, the slag pretreatment unit 100 further includes a slurry unloading platform 170 for slurry. The slurry unloading platform 170 can be used as a receiving hub for external slurry, which is slurry generated by construction sites, municipal engineering or other industrial activities, such as slurry generated by bored piles and rotary piles in pile foundation construction, and slurry for excavating and protecting the wall of the underground continuous wall. The slurry stored in the slurry unloading platform 170 can be transported to the residual slurry pool 130 by a slurry transporter.

[0056] In some preferred embodiments, Figure 2 and Figure 4 As shown, the slag pretreatment unit 100 also includes a chain feeder 150 , and an output end of the chain feeder 150 is connected to the drum stone washer 120 ; an output end of the drum stone washer 120 is connected to a third conveyor 160 .

[0057] In this embodiment, the drum stone washer 120 is fed by combining the slurry tank 110 and the chain plate feeder 150, which is essentially a graded pretreatment strategy designed for the complexity of the slag composition. Among them, the chain plate feeder 150 directly processes large pieces of slag with low mud content, with the purpose of preventing large pieces of hard objects from entering the slurry tank 110 and causing wear or blockage of the mixing blades, while reducing the consumption of water resources (no need to add additional water for stirring). The slurry tank 110 processes high-mud and agglomerated slag, and through high-pressure water washing combined with mechanical stirring, the clay lumps are decomposed into monomer particles, the impurities wrapped are released, and a pumpable homogeneous mud is formed. In this way, the optimal pretreatment method is selected for slag with different physical properties to avoid efficiency losses caused by "one size fits all"; save water consumption, reduce equipment wear, and at the same time improve the aggregate regeneration rate and quality; adapt to the volatility of slag composition and ensure continuous and stable operation of the production line. This design is particularly suitable for projects with complex sources of slag (such as mixed construction waste, river silt, and engineering excavation soil), and the comprehensive processing cost can be reduced by 18-25%.

[0058] In summary, this application provides a construction waste treatment workshop mud treatment system, which can separate construction waste into six materials, namely aggregate, coarse aggregate, fine aggregate, organic matter, filter cake and clean water. The treatment paths in the treatment system are interconnected, so that each material is separated multiple times to ensure the purity of each material. The entire treatment system has a clear process, and each unit is closely connected to form a complete closed-loop treatment chain. From the pretreatment of the slag to the output of the final product, each step has been carefully designed to ensure the treatment efficiency and quality.

[0059] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0060] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A slurry treatment system for a construction waste treatment workshop, characterized in that: include: A slag pretreatment unit, a first separation unit, a second separation unit, a third separation unit and a cross-linking separation unit; The slag pretreatment unit includes, in order of treatment, a slurry mixing tank, a drum stone washer, a residual mud tank and a three-layer vibrating screen, wherein the three-layer vibrating screen includes a first-layer screening mechanism for outputting a first material, a second-layer screening mechanism for outputting a second material, and a third-layer screening mechanism for outputting a third material; The first separation unit comprises a first conveyor, and the first conveyor is connected to the output end of the first layer screening mechanism; The second separation unit includes a spiral sand washer, a bucket sand washer, a coarse sand recovery machine and a second conveyor in the processing order; the spiral sand washer is connected to the output end of the second layer screening mechanism; The third separation unit includes, in order of treatment, a first circulation tank, a first cyclone and a pure mud tank; The first circulation pool is connected to the third layer screening mechanism; The cross-linking separation unit includes a second circulation pool, a double-layer vibrating screen, and a fine sand recovery machine; the input end of the second circulation pool is connected to the spiral sand washing machine and the coarse sand recovery machine, the output end of the second circulation pool is respectively connected to the double-layer vibrating screen and the fine sand recovery machine, the input end of the fine sand recovery machine is also connected to the output end of the first cyclone, and the output end of the fine sand recovery machine is connected to the pure mud pool.

2. The construction waste treatment workshop mud treatment system according to claim 1 is characterized by: The cross-linking separation unit also includes a second cyclone, an input end of the second cyclone is connected to the second circulation pool, an output end of the second cyclone is connected to the double-layer vibrating screen, and another output end of the second cyclone is connected to the bucket sand washing machine.

3. The construction waste treatment workshop mud treatment system according to claim 2 is characterized by: A plurality of the second cyclones are arranged in parallel.

4. The construction waste treatment workshop mud treatment system according to claim 2 is characterized by: The cross-linking separation unit also includes a third cyclone, an input end of the third cyclone is connected to the second circulation pool, an output end of the third cyclone is connected to the fine sand recovery machine, and another output end of the third cyclone is connected to the wheel bucket sand washing machine.

5. The construction waste treatment workshop mud treatment system according to claim 4 is characterized by: A plurality of the third cyclones are arranged in series.

6. The construction waste treatment workshop mud treatment system according to claim 4, characterized in that: The cross-linking separation unit further comprises a fourth cyclone, an input end of the fourth cyclone is connected to the fine sand recovery machine, and an output end of the fourth cyclone is connected to the double-layer vibrating screen.

7. The construction waste treatment workshop mud treatment system according to claim 6, characterized in that: The cross-linking separation unit further comprises a sedimentation tank, an input end of the sedimentation tank is connected to the double-layer vibrating screen, an output end of the sedimentation tank is connected to the pure mud tank, and the other output end of the sedimentation tank is connected to the clean water tank.

8. The construction waste treatment workshop mud treatment system according to claim 1, characterized in that: A plurality of the first cyclones are arranged in series.

9. The construction waste treatment workshop mud treatment system according to claim 1, characterized in that: The slag pretreatment unit also includes a slurry unloading platform for slurry.

10. The construction waste treatment workshop mud treatment system according to claim 1, characterized in that: The slag pretreatment unit also includes a chain feeder, and the output end of the chain feeder is connected to the drum stone washer; an output end of the drum stone washer is connected to a third conveyor.

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