Engineering slurry treatment system

Abstract

The utility model discloses an engineering slurry treatment system, the engineering slurry treatment system comprises a plate trailer, and a screening assembly, a flocculation assembly and a filter pressing assembly which are arranged on the plate trailer and are connected in sequence, the engineering slurry is sent into the screening assembly for desanding, the slurry after desanding is sent into the flocculation assembly for flocculation concentration, and the filter pressing assembly is arranged on the plate trailer. The concentrated slurry is fed into a filter pressing assembly to be dehydrated and dried, and a mud cake is generated. Therefore, engineering slurry on a construction site can be quickly treated, short-term and long-term engineering slurry treatment requirements on the construction site are facilitated, and the aims of quickly transferring and putting into use are fulfilled. Construction slurry, flushing slurry and the like on an engineering site can be treated, and civilized construction on the construction site is guaranteed. And meanwhile, the requirements of small excavation engineering mud for pile foundations, continuous walls and the like are met, and high adaptability is achieved for the working conditions that the amount is small and a site needs to be continuously transferred.

Description

TECHNICAL FIELD

[0001] The utility model relates to engineering construction technical field especially relates to a engineering slurry treatment system. BACKGROUND

[0002] In the construction site, the generation of engineering slurry is a common phenomenon, especially in small excavation engineering such as pile foundation, continuous wall, due to the relatively small construction quantity, often accompanied by the frequent transfer and disposal of engineering slurry. The traditional engineering slurry treatment method has many drawbacks, such as sedimentation tank treatment, manual removal, etc., which needs a long time to let the slurry naturally sediment or manual cleaning, which cannot meet the high requirements of modern construction site on efficiency. The treatment effect of small amount of slurry is poor, and the treatment efficiency is low, which cannot meet the actual needs of small excavation engineering. A large treatment area is needed, which is particularly inconvenient when it conflicts with other operations in the construction site. The untreated engineering slurry can easily cause water pollution and soil pollution, affecting the environmental sanitation and civilized construction of the construction site. In the case of engineering transfer or the need for rapid evacuation, the traditional slurry treatment method is difficult to adapt, and it is necessary to find a new treatment site, which increases the complexity of engineering management. SUMMARY

[0003] The utility model aims at solving one of the technical problems in the related art at least to some extent.

[0004] Therefore, the embodiment of the utility model provides a treatment system which can realize rapid treatment of engineering slurry, has strong adaptability, is convenient for transfer and use.

[0005] The engineering slurry treatment system of the utility model embodiment comprises a board car and a screening assembly, a flocculation assembly and a filter pressing assembly arranged on the board car, the screening assembly, the flocculation assembly and the filter pressing assembly are distributed along the length direction of the board car, the screening assembly has a feeding port, so that the engineering slurry is sent into the screening assembly through the feeding port to remove sand and screen out coarse aggregate and fine sand, the screening assembly is connected with the flocculation assembly, so that the slurry after sand removal is sent into the flocculation assembly to flocculate and concentrate, and the flocculation assembly is connected with the filter pressing assembly, so that the concentrated slurry is sent into the filter pressing assembly to dewater and dry and generate a slurry cake.

[0006] The engineering slurry treatment system of the utility model embodiment meets the requirements of rapid treatment of engineering slurry in the construction site, and can meet the requirements of short-term and long-term engineering slurry treatment in the construction site, and achieve the purpose of rapid transfer and use. The construction slurry and flushing slurry in the construction site can be treated, and the civilized construction in the construction site is ensured. At the same time, the engineering slurry in small excavation engineering such as pile foundation and continuous wall can be treated, and the treatment system has strong adaptability to the working condition of small amount of slurry and constant transfer of site.

[0007] In some embodiments, the screening assembly comprises a double-layer straight screen and a cyclone, the feed inlet is arranged at the lower layer of the double-layer straight screen to screen out coarse aggregates from the engineering slurry passing through the lower layer of the double-layer straight screen, the inlet of the cyclone is communicated with the lower layer of the double-layer straight screen to separate fine sand from the slurry screened by the lower layer of the double-layer straight screen, and the outlet of the cyclone is communicated with the upper layer of the double-layer straight screen through a pipeline to dehydrate the fine sand separated by the cyclone through the upper layer of the double-layer straight screen.

[0008] In some embodiments, the screening assembly further comprises a tank and a first agitator, the tank has an upward opening, the tank is arranged below the double-layer straight screen to receive the slurry screened by the lower layer of the double-layer straight screen, and the first agitator is arranged at least partially in the tank to agitate the slurry in the tank, and the inlet of the cyclone is communicated with the bottom of the tank through a pipeline.

[0009] In some embodiments, the cyclone is arranged above the double-layer straight screen, and a cyclone pump is arranged on the pipeline between the cyclone and the tank.

[0010] In some embodiments, the flocculation assembly comprises a medicating tank, a dosing tank and a flocculation tank connected in sequence, the medicating tank is arranged to send medicaments into the dosing tank, the dosing tank is arranged to send the dosed medicaments into the flocculation tank, and the overflow outlet of the cyclone is communicated with the flocculation tank through a pipeline to send the slurry overflowed from the cyclone into the flocculation tank for flocculation and concentration.

[0011] In some embodiments, the height of the cyclone is higher than the height of the flocculation tank.

[0012] In some embodiments, the pressure filtration assembly comprises a pressure filter and a water tank, the flocculation tank is communicated with the pressure filter through a pipeline to send the concentrated slurry into the pressure filter for dehydration and drying to generate a slurry cake, and the pressure filter is communicated with the water tank through a pipeline to send the water filtered out from the pressure filter into the water tank.

[0013] In some embodiments, the pressure filtration assembly further comprises a slurry cake belt conveyor arranged below the pressure filter to receive the slurry cake compressed out from the pressure filter.

[0014] In some embodiments, the pressure filter is a diaphragm pressure filter, a diaphragm is arranged in the water tank to divide the inner cavity of the water tank into a first cavity and a second cavity, the first cavity of the water tank is communicated with the water outlet of the pressure filter through a pipeline, and the second cavity of the water tank is communicated with the water passage of the diaphragm of the pressure filter through a pipeline.

[0015] In some embodiments, the first cavity of the water tank is also in communication with the double-layer straight screen and the tank body through a pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic diagram of an engineering slurry treatment system according to an embodiment of the present application.

[0017] Figure 2 is a process flow diagram of an engineering slurry treatment system according to an embodiment of the present application.

[0018] REFERENCE SIGNS:

[0019] 1 - a board car,

[0020] 2 - a screening assembly, 21 - a double-layer straight screen, 211 - a feeding port, 22 - a cyclone, 23 - a tank body, 24 - a first agitator, 25 - a cyclone pump,

[0021] 3 - a flocculation assembly, 31 - a flocculation tank, 32 - a medicine adjusting tank, 33 - a medicine preparation tank, 34 - a second agitator, 35 - a third agitator, 36 - a fourth agitator,

[0022] 4 - a filter pressing assembly, 41 - a filter press, 42 - a water tank, 421 - a first cavity, 422 - a second cavity, 43 - a filter cake belt conveyor. DETAILED DESCRIPTION

[0023] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0024] The engineering slurry treatment system according to the embodiments of the present application is described below in conjunction with the drawings.

[0025] As shown in Figure 1 and Figure 2 , the engineering slurry treatment system according to the embodiments of the present application comprises a board car 1 and a screening assembly 2, a flocculation assembly 3 and a filter pressing assembly 4 arranged on the board car 1, the screening assembly 2, the flocculation assembly 3 and the filter pressing assembly 4 are distributed at intervals along the length direction of the board car 1, realizing integrated modular design, integrated with the axle, and occupying less land compared with the traditional treatment method.

[0026] The screening assembly 2 has a feeding port 211, and the engineering slurry in a slurry storage pool at a construction site is sent into the screening assembly 2 through the feeding port 211, and the engineering slurry is subjected to sand removal operation in the screening assembly 2 to screen out coarse aggregate and fine sand in the slurry, so as to ensure that the amount of sand in the slurry is small.

[0027] The screening assembly 2 is connected with the flocculation assembly 3, and the desanded slurry is sent into the flocculation assembly 3 to perform flocculation and concentration operations. The flocculation assembly 3 is connected with the filter-pressing assembly 4, and the concentrated slurry is sent into the filter-pressing assembly 4 to perform dehydration and drying and to generate a slurry cake.

[0028] The engineering slurry treatment system of the embodiment of the utility model meets the requirement that the engineering slurry at the construction site can be quickly treated, facilitates the short-term and long-term engineering slurry treatment demand at the construction site, and achieves the purpose of quick site transfer and use. The construction slurry, flushing slurry and the like at the engineering site can be treated, and the civilized construction at the construction site is ensured. Meanwhile, the system also meets the requirement of small excavation engineering slurry such as pile foundation and continuous wall, and has strong adaptability to the working condition of small quantity and constant site transfer.

[0029] Moreover, the coarse aggregate, fine sand and dried slurry cake separated in the system are respectively transported to a special stockyard at the construction site, the coarse aggregate and fine sand can be used for hardening of the road surface at the site, and the dried slurry cake can be used for filling of the road surface base, so that the materials are used as local resources, environmental pollution is reduced, and resources are saved.

[0030] In some embodiments, as shown in Figure 1 and Figure 2 The screening assembly 2 includes a double-layer linear screen 21 and a cyclone 22.

[0031] The double-layer linear screen 21 has upper and lower layers of screen meshes, and the mesh size of the upper layer of screen meshes is smaller than that of the lower layer of screen meshes. The feed inlet 211 is arranged at the lower layer of the double-layer linear screen 21, and the engineering slurry is first screened by the lower layer of screen meshes of the double-layer linear screen 21 to separate coarse aggregate. The inlet at the top of the cyclone 22 is communicated with the lower layer of the double-layer linear screen 21, and the slurry screened by the lower layer of screen meshes of the double-layer linear screen 21 is sent into the cyclone 22 to separate fine sand. The outlet at the bottom of the cyclone 22 is communicated with the upper layer of the double-layer linear screen 21 through a pipeline, and the fine sand separated by the cyclone 22 is finally dehydrated by the upper layer of screen meshes of the double-layer linear screen 21.

[0032] It can be understood that the lower layer of screen meshes of the double-layer linear screen 21 has a larger aperture, which is used to screen coarse aggregate (larger solid particles), and the upper layer of screen meshes has a smaller aperture, which is used to dehydrate the fine sand separated by the cyclone to obtain relatively dry fine sand products.

[0033] Therefore, the coarse aggregate, fine sand and slurry water in the engineering slurry are effectively separated and treated and utilized respectively, which not only improves the resource utilization rate but also reduces environmental pollution. The combination of the double-layer linear screen 21 and the cyclone 22 realizes fine separation and dehydration of different particle size levels of materials in the slurry.

[0034] In some embodiments, as shown in Figure 1 and Figure 2As shown, the screening assembly 2 further comprises a tank body 23 and a first agitator 24.

[0035] The tank body 23 has an upward opening, and is arranged below the double-layer linear screen 21 so that the slurry screened by the lower screen of the double-layer linear screen 21 falls into the tank body 23. The inlet of the cyclone 22 is connected to the bottom of the tank body 23 through a pipeline.

[0036] It can be understood that the lower screen of the double-layer linear screen 21 has a large flow area, which is not convenient to directly enter the cyclone 22. Therefore, the tank body 23 is arranged below the double-layer linear screen 21, which is used as an intermediate buffer, and then the slurry is transported into the cyclone 22 through a pipeline, thereby improving the feasibility of system operation.

[0037] Optionally, the tank body 23 is inverted conical so that the slurry is collected at the bottom of the tank body 23, thereby facilitating the feeding into the cyclone 22.

[0038] Further, at least part of the first agitator 24 is arranged in the tank body 23, and the first agitator 24 is used to agitate the slurry in the tank body 23, thereby preventing the occurrence of sludge in the tank body 23.

[0039] Further, the cyclone 22 is arranged above the double-layer linear screen 21, and a cyclone pump 25 is arranged on the pipeline between the cyclone 22 and the tank body 23. The cyclone pump 25 is used to pump the slurry in the tank body 23 into the cyclone 22. In this way, the fine sand discharged from the bottom outlet of the cyclone 22 directly falls onto the upper screen of the double-layer linear screen 21 under the action of gravity, thereby reducing the number of pumps.

[0040] In some embodiments, as shown in Figs. 1 and 2, Figure 1 and Figure 2 The flocculation assembly 3 comprises a preparation tank 33, a dosing tank 32 and a flocculation tank 31 connected in sequence.

[0041] The preparation tank 33 is used to feed the medicament into the dosing tank 32 for dispensing, the dosing tank 32 is used to feed the dispensed medicament into the flocculation tank 31, and the overflow outlet of the cyclone 22 is connected to the flocculation tank 31 through a pipeline, so that the overflow slurry of the cyclone 22 is fed into the flocculation tank 31 for flocculation and concentration.

[0042] It can be understood that the overflow slurry of the cyclone 22 flows into the flocculation tank 31, and the dosing tank 32 adds the medicament (e.g., flocculant) into the flocculation tank 31 through a dosing pump, so that the slurry is flocculated and concentrated.

[0043] Optionally, in order to mix the slurry and the medicament sufficiently, a second agitator 34 is arranged on the flocculation tank 31. Similarly, a third agitator 35 is arranged on the dosing tank 32, and a fourth agitator 36 is arranged on the preparation tank 33, thereby ensuring uniform mixing of the materials and improving the efficiency and quality of the pharmaceutical process.

[0044] Further, the height of the cyclone 22 is higher than the height of the flocculation tank 31, so as to ensure that the overflow slurry can effectively flow into the flocculation tank 31.

[0045] In some embodiments, as shown in Figure 1 and Figure 2 , the filter-press assembly 4 comprises a filter press 41 and a water tank 42.

[0046] The flocculation tank 31 is communicated with the filter press 41 through a pipeline, so that the concentrated slurry is sent into the filter press 41 for dewatering and drying to generate a cake, and the filter press 41 is communicated with the water tank 42 through a pipeline, so that the water filtered out of the filter press 41 is sent into the water tank 42.

[0047] In the embodiment, the outlet side of the flocculation tank 31 is provided with a pump, which pumps the concentrated slurry into the filter press 41 for filter-pressing operation. The water tank 42 is located below the filter press 41, and the water filtered out of the filter press 41 flows into the water tank 42 under the action of gravity.

[0048] Optionally, the filter press 41 is a diaphragm filter press. The water tank 42 is provided with a diaphragm, so as to divide the inner cavity of the water tank 42 into a first cavity 421 and a second cavity 422. The first cavity 421 of the water tank 42 is communicated with the water outlet of the filter press 41 through a pipeline, and the second cavity 422 of the water tank 42 is communicated with the water passage of the diaphragm of the filter press 41 through a pipeline.

[0049] That is, the water in the second cavity 422 of the water tank 42 serves to provide the required water amount for secondary pressing of the equipment in the high-pressure diaphragm filter press 41, further improves the dryness of the filter cake, and optimizes the solid-liquid separation effect.

[0050] It can be understood that after the filter press 41 completes the preliminary filtration and pressing process, the filter cake still contains a certain amount of water. Further improving the dryness, the water in the second cavity 422 of the water tank 42 is pumped into the filter press 41 by using a pressurized pump, so as to expand the diaphragm in the filter press 41 and further extrude the filter cake, thereby discharging more water.

[0051] In some embodiments, as shown in Figure 2 , the first cavity 421 of the water tank 42 is further communicated with the double-layer linear screen 21 and the tank body 23 through a pipeline.

[0052] In this way, the clean water filtered out of the filter press 41 enters the water tank 42, which is used for spraying of the double-layer linear screen 21, backflushing of the tank body 23 below the screen, or cleaning of the construction site, thereby improving the utilization rate of water resources.

[0053] In some embodiments, as shown in Figure 1 and Figure 2As shown, the filter-press assembly 4 further comprises a cake belt conveyor 43, which is located below the filter press 41 so that the cake compressed by the filter press 41 falls onto the cake belt conveyor 43. Specifically, to reduce the floor space, the cake belt conveyor 43 is erected between the filter press 41 and the water tank 42.

[0054] To sum up, the engineering mud treatment system of the embodiment of the utility model can greatly improve the portability and site adaptability of the system, and greatly reduce the installation cost and temporary building cost. The miniaturized design meets the miniaturized land occupation demand, and the movable design can quickly change the site, meeting the site mud treatment with short construction period, small land occupation and small treatment capacity. The mud is locally recycled, reducing environmental pollution and saving resources.

[0055] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0056] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0057] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0058] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0059] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0060] Although the above embodiments have been shown and described, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. Changes, modifications, replacements and variations of the above embodiments made by those skilled in the art are within the scope of the present application.

Claims

1. An engineered slurry treatment system, characterized by, The invention relates to a board cart and a screening assembly, a flocculation assembly and a filter-pressing assembly arranged on the board cart, the screening assembly, the flocculation assembly and the filter-pressing assembly are spaced along the length direction of the board cart, the screening assembly has a feeding port for feeding the engineering slurry into the screening assembly to remove sand and screen out coarse aggregates and fine sand, the screening assembly is connected with the flocculation assembly to feed the slurry after sand removal into the flocculation assembly to flocculate and concentrate, and the flocculation assembly is connected with the filter-pressing assembly to feed the slurry after concentration into the filter-pressing assembly to dewater and dry to form a slurry cake.

2. The engineered mud treating system of claim 1, wherein, The screening assembly comprises a double-layer linear screen and a cyclone, the feeding port is arranged on the lower layer of the double-layer linear screen to screen out coarse aggregates from the slurry through the lower layer screen, the inlet of the cyclone is communicated with the lower layer of the double-layer linear screen to separate fine sand from the slurry after screening through the lower layer screen, and the outlet of the cyclone is communicated with the upper layer of the double-layer linear screen through a pipeline to dewater the fine sand separated from the cyclone through the upper layer screen.

3. The engineered mud treating system of claim 2, wherein, The screening assembly further comprises a tank and a first agitator, the tank has an upward opening, and the tank is arranged below the double-layer linear screen to allow the slurry after screening through the lower layer screen to fall into the tank, at least a part of the first agitator is arranged in the tank, and the first agitator is used to agitate the slurry in the tank, and the inlet of the cyclone is communicated with the bottom of the tank through a pipeline.

4. The engineered mud treating system of claim 3, wherein, The cyclone is arranged above the double-layer linear screen, and a cyclone pump is arranged on the pipeline between the cyclone and the tank.

5. The engineered mud treating system of claim 3, wherein, The flocculation assembly comprises a preparation tank, a mixing tank and a flocculation tank connected in sequence, the preparation tank is used to feed the medicine into the mixing tank to be mixed, the mixing tank is used to feed the mixed medicine into the flocculation tank, the overflow outlet of the cyclone is communicated with the flocculation tank through a pipeline to feed the slurry overflowed from the cyclone into the flocculation tank to be flocculated and concentrated.

6. The engineered mud treating system of claim 5, wherein, The height of the cyclone is higher than the height of the flocculation tank.

7. The engineered mud treating system of claim 5, wherein, The filter-pressing assembly comprises a filter press and a water tank, the flocculation tank is communicated with the filter press through a pipeline to feed the slurry after concentration into the filter press to dewater and dry to form a slurry cake, and the filter press is communicated with the water tank through a pipeline to feed the water filtered out from the filter press into the water tank.

8. The engineered mud treating system of claim 7, wherein, The filter-pressing assembly further comprises a slurry cake belt conveyor, and the slurry cake belt conveyor is arranged below the filter press to allow the slurry cake compressed from the filter press to fall onto the slurry cake belt conveyor.

9. The engineered mud treating system of claim 7, wherein, The filter press is a diaphragm filter press, a diaphragm is arranged in the water tank to divide the inner cavity of the water tank into a first cavity and a second cavity, the first cavity of the water tank is communicated with the drain port of the filter press through a pipeline, and the second cavity of the water tank is communicated with the water passing port of the diaphragm of the filter press through a pipeline.

10. The engineered mud treating system of claim 9, wherein, The first cavity of the water tank is further communicated with the double-layer linear screen and the tank through a pipeline.

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