Superfine sand recovery device for concrete mixing plant

Abstract

The utility model discloses a superfine sand recovery device for a concrete mixing plant, which comprises a frame, a cyclone, a dewatering screen and a cleaning tank, a positioning column is fixedly connected to the inner side of the dewatering screen, a vibration motor is mounted at the front end of the positioning column, a leveling plate is mounted at the rear end of the positioning column, a distribution box is mounted in the dewatering screen, and a distribution plate is mounted at the bottom in the distribution box. A material returning box is installed on the upper portion of the rear end of the machine frame through a fixing frame, an overflow pipe is arranged on the upper portion of the rear end of the material returning box, a water returning pipe connected with the cleaning tank is arranged on the lower portion of the rear end of the material returning box, the swirler is installed at the front end of the material returning box through a supporting frame, and the water outlet end of the swirler is connected to the material returning box through a communicating pipe. Superfine sand is uniformly distributed on the screen surface of the dewatering screen under the action of the material distributing plate, so that accumulation is avoided, and the dewatering effect is improved; and through cooperation of a scraping plate and a flattening plate, superfine sand on the screen surface can be flattened, meanwhile, the superfine sand on the screen surface can be prevented from being too thick, and the dewatering effect is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to concrete equipment technical field, concretely is a kind of superfine sand recovery device for concrete mixing station. BACKGROUND

[0002] In the working process of concrete mixing station, a large amount of sewage will be produced, the sewage contains each component of concrete mixture, and there are clay sediments brought by washing site, after separation by sandstone separator, fine aggregate with larger size of gravel grade can be reused, but superfine sand and clay particles with smaller size remain in slurry, in today's increasingly stringent environmental protection requirements, many concrete enterprises use sewage pump to directly use slurry containing superfine sand and clay particles in concrete mixture, the solid content in sewage is higher, and the hardness of superfine sand is higher, which leads to high failure rate of sewage pump, and the presence of clay particles leads to increased slump loss of concrete and reduced stability of concrete quality.

[0003] Therefore, the superfine sand in sewage is usually recycled in the current concrete mixing station, and the superfine sand recovery device is needed when recycling superfine sand, but in the current superfine sand recovery device, the fine sand discharged from the cyclone is usually directly discharged onto the dehydration screen for dehydration, and due to uneven thickness of the laid fine sand, the dehydration effect is uneven, which reduces the dehydration effect. UTILITARIAN CONTENT

[0004] The technical problem to be solved by the utility model is that the thickness of the fine sand laid on the dehydration screen in the current superfine sand recovery device for concrete mixing station is uneven, which leads to uneven dehydration effect and reduces the dehydration effect.

[0005] In order to solve the above problems, the technical scheme of the utility model is as follows: a superfine sand recovery device for concrete mixing station, comprising a rack, a cyclone is installed on the upper part of the rear end of the rack, a dehydration screen is arranged below the cyclone, a cleaning tank is installed below the dehydration screen on the inner side of the rack, a positioning column is fixedly connected to the upper part of the inner side of the dehydration screen, a vibration motor is installed at the front end of the positioning column, and a material leveling plate is installed at the rear end of the positioning column, a distribution box is installed at the position directly below the cyclone inside the dehydration screen, a distribution plate is installed at the bottom of the distribution box, a plurality of discharge holes are formed in the distribution plate, a return material box is installed on the upper part of the rear end of the rack through a fixing frame, an overflow pipe is arranged at the upper part of the rear end of the return material box, a water return pipe connected with the cleaning tank is arranged at the lower part of the rear end of the return material box, the cyclone is installed at the front end of the return material box through a support frame, and the water outlet end of the cyclone is connected to the return material box through a communication pipe.

[0006] Further, the dehydration screen is installed on the rack through a damping support, a material supplementing opening is arranged at the upper part of the side of the cleaning tank, and a discharge pipe is arranged at the lower part of the rear end of the cleaning tank.

[0007] Further, the positioning column is a rectangular column and is obliquely installed inside the dewatering screen.

[0008] Further, one end of the flat material plate is detachably installed on the positioning column by bolts, and the other end is provided with a bent part perpendicular to the screen surface of the dewatering screen.

[0009] Further, a scraping plate is installed at the back of the flat material plate through a supporting rod, and the bottom edge of the scraping plate is provided with sawtooth-shaped scraping teeth.

[0010] Further, the material distribution plate is in an inverted V-shaped structure.

[0011] Further, a filter screen is installed at the upper part of the material return box, the end part of the communication pipe extends to below the filter screen after passing through the filter screen, and the overflow pipe is located above the filter screen.

[0012] Compared with the prior art, the superfine sand is uniformly distributed on the screen surface of the dewatering screen under the action of the material distribution plate, accumulation is avoided, and the dewatering effect is improved; the superfine sand on the screen surface can be leveled through the cooperation of the scraping plate and the flat material plate, and the thickness of the superfine sand on the screen surface can be avoided to be too thick, and the dewatering effect is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is the three-dimensional view of the utility model Figure 1 .

[0014] Figure 2 is the three-dimensional view of the utility model Figure 2 .

[0015] Figure 3 is the sectional view of the dewatering screen of the utility model.

[0016] Figure 4 is the sectional view of the material return box of the utility model.

[0017] As shown in the drawings: 1, rack; 2, cyclone; 3, dewatering screen; 4, cleaning tank; 5, positioning column; 6, vibration motor; 7, flat material plate; 8, material distribution box; 9, material distribution plate; 10, material return box; 11, overflow pipe; 12, backwater pipe; 13, communication pipe; 14, shock absorber; 15, scraping plate; 16, filter screen. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described 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 in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0019] As Figures 1 to 2 shown, a concrete mixing station superfine sand recycling device, including frame 1, frame 1 rear end upper part is installed with cyclone 2, cyclone 2 below is equipped with dehydration screen 3, frame 1 inside is installed with cleaning tank 4 below dehydration screen 3, dehydration screen 3 is installed on frame 1 through damping support 14, the side upper part of cleaning tank 4 is equipped with a feeding port, the rear end lower part is equipped with a discharge pipe, the inside upper part of dehydration screen 3 is fixedly connected with positioning column 5, the front end of positioning column 5 is installed with vibration motor 6, positioning column 5 is rectangular column, and is installed obliquely inside dehydration screen 3.

[0020] The superfine sand treated by sandstone separator enters the cleaning tank through the feeding port, the slurry pump inlet end and the outlet end are connected to the discharge pipe and the input pipe of cyclone 2 respectively, and the sand-water separation is carried out through cyclone 2, and the superfine sand is discharged after dehydration on dehydration screen 3.

[0021] As Figure 3 shown, the inside of dehydration screen 3 is installed with distribution box 8 directly below cyclone 2, distribution box 8 is installed with distribution plate 9 inside the bottom, distribution plate 9 is inverted V-shaped structure, and a plurality of discharge holes are formed on the distribution plate.

[0022] The superfine sand discharged by cyclone 2 falls into distribution box 8, and falls onto the screen surface of dehydration screen 3 through the discharge holes on distribution plate 9, which can improve the uniformity of the material, thereby avoiding the accumulation of superfine sand and improving the dehydration effect.

[0023] The rear end of positioning column 5 is installed with leveling plate 7, one end of leveling plate 7 is detachably installed on positioning column 5 through bolts, and the other end is provided with a bent part perpendicular to the screen surface of dehydration screen 3, and the rear of leveling plate 7 is installed with scraping plate 15 through support rod, and the bottom edge of scraping plate 15 is provided with sawtooth-shaped scraping teeth.

[0024] By adjusting the installation height of leveling plate 7, the spacing between the bottom edge of leveling plate 7 and the screen surface of dehydration screen 3 can be adjusted, and the superfine sand on the screen surface can be leveled by the cooperation of scraping plate 15 and leveling plate 7, and the thickness of the superfine sand on the screen surface can be avoided.

[0025] As Figure 2 and Figure 4 shown, the rear end upper part of frame 1 is installed with return bin 10 through fixing frame, the rear end upper part of return bin 10 is equipped with overflow pipe 11, the rear end lower part is equipped with return pipe 12 connected with cleaning tank 4, cyclone 2 is installed in front end of return bin 10 through support frame, and the water outlet end is connected to return bin 10 through communication pipe 13.

[0026] After dehydration through the dehydration screen 3, the ultrafine sand is effectively separated from water, a small amount of ultrafine sand, mud and the like enters the cleaning tank, and is transported to the cyclone 2 for separation again by the slurry pump, a small amount of ultrafine sand incorrectly separated by the cyclone 2 enters the return tank 10 along with the water flow, and then is returned to the cleaning tank 4 through the return pipe 12, and through multiple cycles, the recovery rate of the fine sand can be effectively improved.

[0027] In specific use, the cyclone 2 discharges the ultrafine sand into the distribution box 8, and the ultrafine sand is uniformly distributed on the screen surface of the dehydration screen 3 under the action of the distribution plate 9, so as to avoid accumulation of the ultrafine sand and improve the dehydration effect; the ultrafine sand on the screen surface can be leveled by cooperation of the scraping plate 15 and the leveling plate 7, and meanwhile, the thickness of the ultrafine sand on the screen surface can be avoided to be too thick, and the dehydration effect is further improved.

[0028] The non-disclosed parts in the utility model are all prior art, and the specific structure and working principle will not be described again.

[0029] It should be noted that, in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the utility model have been shown and described, it is to be understood that the embodiments are merely exemplary and that certain steps can be substituted or deleted, others can be added, and certain characteristics can be substituted for other characteristics, without departing from the spirit and scope of the utility model. The scope of the utility model is defined by the appended claims and their equivalents.

[0031] The utility model and its implementation mode have been described above, and this description is not restrictive, and the embodiment shown in the drawings is only one of the embodiments of the utility model, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired by this, without departing from the creative purpose of the utility model, without creative design, similar structure modes and embodiments of the technical scheme can be designed, which should belong to the protection scope of the utility model.

Claims

1. A superfine sand recycling device for a concrete mixing plant, comprising a frame (1), a cyclone (2) is installed on the upper part of the rear end of the frame (1), a dewatering screen (3) is arranged below the cyclone (2), and a cleaning tank (4) is installed inside the frame (1) below the dewatering screen (3), characterized in that: The positioning column (5) is fixed on the upper inner side of the dehydration screen (3), the vibration motor (6) is installed on the front end of the positioning column (5), and the flat material plate (7) is installed on the rear end of the positioning column (5); the material distribution box (8) is installed inside the dehydration screen (3) directly below the cyclone (2); the material distribution plate (9) is installed on the inner bottom of the material distribution box (8), a plurality of discharge holes are formed in the material distribution plate (9), the return box (10) is installed on the upper end of the rear end of the rack (1) through the fixing frame, the overflow pipe (11) is arranged on the upper end of the rear end of the return box (10), the backwater pipe (12) connected with the cleaning tank (4) is arranged on the lower end of the rear end of the return box (10), the cyclone (2) is installed on the front end of the return box (10) through the support frame, and the water outlet end of the cyclone (2) is connected to the return box (10) through the communication pipe (13).

2. A super fine sand recovery device for a concrete mixing plant according to claim 1, characterized in that: The dehydration screen (3) is installed on the rack (1) through the damping support (14), the side upper end of the cleaning tank (4) is provided with a material supplementing opening, and the lower end of the rear end of the cleaning tank (4) is provided with a discharge pipe.

3. A device for recovering ultra-fine sand for a concrete mixing plant according to claim 1, characterized in that: The positioning column (5) is a rectangular column and is obliquely installed on the inner side of the dehydration screen (3).

4. A super fine sand recovery device for a concrete mixing plant according to claim 1, characterized in that: One end of the flat material plate (7) is detachably installed on the positioning column (5) through bolts, and the other end is provided with a bent portion perpendicular to the screen surface of the dehydration screen (3).

5. A concrete plant ultrafine sand recovery device according to claim 4, characterized in that: The scraping plate (15) is installed on the rear end of the flat material plate (7) through the supporting rod, and the bottom edge of the scraping plate (15) is provided with sawtooth-shaped scraping teeth.

6. A super fine sand recovery device for a concrete mixing plant according to claim 1, characterized in that: The material distribution plate (9) is in an inverted V-shaped structure.

7. A super fine sand recovery device for a concrete mixing plant according to claim 1, characterized in that: The filter screen (16) is installed on the upper end of the return box (10), the end of the communication pipe (13) extends to the lower end of the filter screen (16) after penetrating through the filter screen (16), and the overflow pipe (11) is arranged above the filter screen (16).

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