Flotation treatment device for ardealite

Abstract

The utility model discloses a phosphogypsum flotation treatment device, which comprises a flotation tank, a discharge pipe, a foam pipe and a cofferdam, foam feed ports are arranged on two sides of the outer surface of the foam pipe in a penetrating manner, and the foam pipe comprises a foam sweeping-out mechanism for sweeping out impurity foam. The foam sweeping-out mechanism comprises two bearing seats fixed to the two sides of the upper surface of the foam pipe respectively and a driving shaft located between the two bearing seats, and a plurality of rotary scraping blades annularly distributed at equal intervals are fixedly arranged in the middle of the outer surface of the driving shaft. The foam sweeping-out mechanism is arranged in the foam pipe, the fluidity of impurity foams can be effectively improved through continuous one-way sweeping of the rotary scraping blades, the impurity foams are swept out, and therefore the impurity foams are continuously discharged; and through the arranged foam gathering mechanism, overflowing impurity foam can be moved to the foam feeding openings in the two sides of the foam pipe, the impurity foam enters the foam pipe, and gathering of the impurity foam is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of phosphogypsum processing, in particular to a flotation processing device for phosphogypsum. Background Art

[0002] Phosphogypsum is a solid waste generated during the wet-process phosphoric acid production process. Its primary component is calcium sulfate dihydrate, along with other impurities such as incompletely decomposed phosphate rock, residual phosphoric acid, fluoride, acid-insoluble matter, and organic matter. Fluorine and organic matter have the greatest impact on the resource utilization of phosphogypsum. These impurities reduce the quality of phosphogypsum, preventing it from meeting the quality requirements of gypsum raw materials and restricting its use.

[0003] Chinese patent CN219324313U discloses a phosphogypsum water flotation device, comprising a flotation tank with an opening at the top, a reactor provided in the flotation tank, a discharge pipe connected to the bottom of the flotation tank, a cofferdam provided at the top of the flotation tank, the opening at the top of the cofferdam being closed by a top cover, and the cofferdam being connected to a foam pipe; the reactor comprises a flow guide hood fixedly connected to the reactor via a plurality of connecting rods, a core tube provided in the flow guide hood, a plurality of annular orifice plates fixedly provided in an annular cavity between the core tube and the flow guide hood, a confluence shell fixedly connected to the lower end of the core tube, and the confluence shell being connected to the phosphogypsum pipe, the flotation agent pipe, the compressed air pipe, and the flushing water pipe. During use, phosphogypsum slurry, flotation agent, compressed air, and flushing water are fed into the manifold housing 10 via the phosphogypsum pipe 13, flotation agent pipe 14, compressed air pipe 6, and flushing water pipe 7, where they are mixed and reacted to form a slurry. The slurry and bubbles pass through the core pipe 17 and enter the annular cavity. The slurry in the annular cavity passes through the annular orifice plates 18 in sequence from top to bottom. As the slurry passes through the annular orifice plates 18, the bubbles in the slurry are cut by the annular orifice plates 18 and reacted to form foam, which then enters the flotation tank 5. Impurities in the slurry adhere to the surface of the foam. Under the action of buoyancy, the foam overflows into the cofferdam 2 and is finally discharged from the foam pipe 4. The slurry that has been cleaned is discharged from the discharge pipe 11, thus completing the phosphogypsum water flotation process. However, due to the variety of impurities in the phosphogypsum, the impurity content in the generated foam is relatively high, resulting in reduced fluidity of the impurity foam. If only the horizontally arranged foam pipe 4 is relied upon, it is difficult to continuously complete the discharge of the impurity foam, resulting in an increased probability of blockage. Utility Model Content

[0004] The utility model aims to solve the above-mentioned problems existing in the prior art phosphogypsum water flotation device and provides a phosphogypsum flotation treatment device which can discharge impurity foam smoothly and reduce the occurrence of clogging.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: The present invention provides a flotation treatment device for phosphogypsum, comprising a flotation tank, a discharge pipe, a foam pipe and a cofferdam, wherein both sides of the outer surface of the foam pipe are provided with a foam feed port, the foam pipe comprises a foam sweeping mechanism for sweeping out impurity foam, the foam sweeping mechanism comprises two bearing seats respectively fixed on both sides of the upper surface of the foam pipe, and a drive shaft located between the two bearing seats, and a plurality of rotating scrapers distributed in a circular shape and at equal intervals are fixedly provided in the middle of the outer surface of the drive shaft. The cofferdam comprises a cover body provided on the top of the cofferdam, and the cover body and the cofferdam are integrally formed, there are two foam sweeping mechanisms, and the two foam sweeping mechanisms are respectively located at the two ends of the inside of the foam pipe, the setting of the foam feed port allows the impurity foam to gather into the foam pipe, and the inner surface of the foam feed port is provided with a slope to prevent the impurity foam from being blocked during the gathering period.

[0006] Preferably, the cross-section of the foam tube is designed to be in the shape of a square. The two ends of the drive shaft are rotatably mounted on two bearing seats via bearings. The outer end of one of the drive shafts is connected to the output end of an external first drive member via a reducer. The first drive member is a servo motor. A synchronous pulley is fixedly mounted in the middle of the outer end of the drive shaft, and a toothed transmission belt is used to drive the two synchronous pulleys. The rotating scraper is used to sweep away impurity foam to ensure its continued fluidity. The outer surface of the rotating scraper, facing away from the end of the drive shaft, has a slope. The two synchronous pulleys have the same structure, ensuring the synchronous rotation of the two drive shafts.

[0007] Preferably, the device further comprises a foam collecting mechanism for cleaning and collecting overflowed impurity foam, the foam collecting mechanism comprising a first fixing frame mounted on the upper surface of the cofferdam, a fixing shaft mounted on the upper surface of the first fixing frame, the fixing shaft being coaxial with the cofferdam, two cross bars being provided on either side of the outer surface of the fixing shaft, a torsion spring being provided on the outer surface of the fixing shaft and at each cross bar position, the cross bars and the fixing shaft being elastically connected by the torsion spring, wherein the torsion spring is used to reset the cross bars, causing the two cross bars to merge with each other.

[0008] Preferably, a vertical pole is fixedly provided at the outer end of the horizontal bar, a surrounding scraper is fixedly provided at the bottom end of the vertical pole, the surrounding scraper has a fan-shaped structure, a sealing strip is provided on the outer surface of the surrounding scraper, and a bubble scraper is fixedly provided on one side of the outer surface of the surrounding scraper, the bubble scraper has a fan-shaped structure, the outer surface of the sealing strip contacts the inner surface of the cofferdam, the lower surface of the bubble scraper contacts the upper surface of the flotation tank, and a track groove is provided through the middle of the upper surface of the cofferdam. The track groove is used to guide the vertical pole, and the track groove has an arc-shaped structure. The sealing strip is made of rubber material to increase friction at the joint and improve the cleaning effect. The bubble scraper is used to collect impurity foam floating on the top of the flotation tank.

[0009] Preferably, the foam gathering mechanism further includes a second fixed frame mounted on the upper surface of the cofferdam, and two fixed winding columns relatively fixed on both sides of the upper surface of the cofferdam. A winding wheel is rotatably mounted inside the second fixed frame, and two traction lines are respectively provided on both sides of the outer surface of the winding wheel. The two ends of the traction line are respectively connected to the winding wheel and the vertical pole. The outer end of the winding wheel is connected to the output end of the external second driving member through a coupling. The second driving member is a servo motor. The cross-section of the winding wheel is designed in an I-shaped structure. The two traction lines are respectively used to pull the two vertical poles, and the fixed winding column is used to guide the traction line.

[0010] Therefore, the utility model has the following beneficial effects:

[0011] (1) By setting a foam sweeping mechanism inside the foam tube and using the continuous unidirectional sweeping of the rotating scraper, the fluidity of the impurity foam can be effectively improved and the impurity foam can be swept out, thereby continuously completing the discharge of the impurity foam and reducing the probability of blockage;

[0012] (2) Through the foam gathering mechanism, the two synchronously sliding scrapers can move the overflowed impurity foam to the foam inlet positions on both sides of the foam pipe, and make the impurity foam enter the foam pipe, so as to achieve the gathering of impurity foam and facilitate the next step of discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an overall planar sectional view of the present utility model.

[0014] Figure 2 It is an overall side sectional view of the present utility model.

[0015] Figure 3 This is a side view of the local structure of the utility model Figure 1 .

[0016] Figure 4 This is a side view of the local structure of the utility model Figure 2 .

[0017] In the figure: 100, flotation tank; 200, discharge pipe; 300, foam pipe; 301, foam inlet; 400, foam sweeping mechanism; 401, first driving member; 402, reducer; 403, rotating scraper; 404, bearing seat; 405, driving shaft; 406, toothed transmission belt; 407, synchronous pulley; 500, cofferdam; 600, foam gathering mechanism; 601, fixed winding column; 602, bubble scraper; 603, surrounding scraper; 604, vertical pole; 605, track groove; 606, first fixed frame; 607, second fixed frame; 608, winding wheel; 609, second driving member; 610, fixed shaft; 611, torsion spring; 612, cross bar; 613, sealing strip; 614, traction line. DETAILED DESCRIPTION

[0018] like Figure 1 、 Figure 2 As shown, Figure 1-4 As shown, a flotation treatment device for phosphogypsum of the present invention includes a flotation tank 100, a discharge pipe 200, a foam pipe 300 and a cofferdam 500. The cross-section of the foam pipe 300 is designed in a U-shaped structure. The discharge pipe 200 is arranged at the bottom of the flotation tank 100, the cofferdam 500 is arranged at the top of the flotation tank 100, and the foam pipe 300 is fixedly arranged on the outer surface of the bottom of the cofferdam 500 for discharging impurity foam. As a prior art, this case will not be described in detail. In this case, the flotation treatment process of phosphogypsum adopts the implementation means provided in the patent mentioned in the above background technology. In this device, the foam pipe 300 includes a foam sweeping mechanism 400 for sweeping out impurity foam. Specifically, foam inlets 301 are provided on both sides of the outer surface of the foam tube 300. The foam sweeping mechanism 400 includes two bearing seats 404 respectively fixed on both sides of the upper surface of the foam tube 300, and a drive shaft 405 located between the two bearing seats 404. The two ends of the drive shaft 405 are respectively rotatably arranged with the two bearing seats 404 through bearings. A plurality of rotating scrapers 403 distributed in a circular shape and at equal intervals are fixedly provided in the middle of the outer surface of the drive shaft 405. The outer end of one drive shaft 405 is connected and assembled with the output end of the external first drive member 401 through a reducer 402. The first drive member 401 is installed on the reducer 402, and the reducer 402 is installed on the foam tube 300. The first drive member 401 is a servo motor. A synchronous pulley 407 is fixedly installed in the middle of the outer end of the drive shaft 405, and the two synchronous pulleys 407 are transmitted by a toothed transmission belt 406.

[0019] Furthermore, the device also includes a foam gathering mechanism 600 for cleaning and gathering overflowed impurity foam. Specifically, the foam gathering mechanism 600 includes a first fixed frame 606 installed on the upper surface of the cofferdam 500. A fixed shaft 610 is installed on the upper surface of the first fixed frame 606. The fixed shaft 610 is coaxial with the cofferdam 500. Two cross bars 612 are respectively provided on both sides of the outer surface of the fixed shaft 610. A torsion spring 611 is provided on the outer surface of the fixed shaft 610 and at the position of each cross bar 612. The cross bar 612 and the fixed shaft 610 are elastically arranged through the torsion spring 611. The outer surface of the cross bar 612 is provided with a spring. A vertical pole 604 is fixedly provided at the end, a track groove 605 is opened through the middle of the upper surface of the cofferdam 500, and a surrounding scraper 603 is fixedly provided at the bottom end of the vertical pole 604, which is used to clean the impurity foam at the bottom end of the inner surface of the cofferdam 500. The surrounding scraper 603 is designed in a fan-shaped structure, and a sealing strip 613 is provided on the outer surface of the surrounding scraper 603. The outer surface of the sealing strip 613 contacts the inner surface of the cofferdam 500. A bubble scraper 602 is fixedly provided on one side of the outer surface of the surrounding scraper 603. The lower surface of the bubble scraper 602 contacts the upper surface of the flotation tank 100. The bubble scraper 602 is designed in a fan-shaped structure.

[0020] Specifically, the foam gathering mechanism 600 also includes a second fixed frame 607 installed on the upper surface of the cofferdam 500, and two fixed winding columns 601 relatively fixed on both sides of the upper surface of the cofferdam 500. A winding wheel 608 is rotatably installed inside the second fixed frame 607, and two traction lines 614 are respectively provided on both sides of the outer surface of the winding wheel 608. The two ends of the traction line 614 are respectively connected to the winding wheel 608 and the vertical pole 604. The outer end of the winding wheel 608 is connected to the output end of the external second driving member 609 through a coupling. The second driving member 609 is installed on the second fixed frame 607, and the second driving member 609 is a servo motor.

[0021] According to the above, the utility model sets a foam sweeping mechanism 400 inside the foam tube 300, and uses the continuous unidirectional sweeping of the rotating scraper 403 to effectively improve the fluidity of the impurity foam and sweep out the impurity foam, so as to continuously complete the discharge of the impurity foam and reduce the probability of blockage. The utility model sets a foam gathering mechanism 600, and uses two synchronously sliding surrounding scrapers 603 to move the overflowed impurity foam to the foam feed port 301 on both sides of the foam tube 300, and make the impurity foam enter the foam tube 300, so as to achieve the gathering of the impurity foam and facilitate the next step of discharge.

[0022] The embodiment described above is only a preferred solution of the present invention and does not limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. A flotation treatment device for phosphogypsum, comprising a flotation tank (100), a discharge pipe (200), a foam pipe (300) and a cofferdam (500), characterized in that: Foam inlets (301) are provided on both sides of the outer surface of the foam tube (300). The foam tube (300) includes a foam sweeping mechanism (400) for sweeping out impurity foam. The foam sweeping mechanism (400) includes two bearing seats (404) respectively fixed on both sides of the upper surface of the foam tube (300), and a driving shaft (405) located between the two bearing seats (404). A plurality of rotating scrapers (403) distributed in an annular shape and at equal intervals are fixedly provided in the middle of the outer surface of the driving shaft (405).

2. The flotation treatment device for phosphogypsum according to claim 1, characterized in that: The cross section of the foam tube (300) is designed in a U-shaped structure. The two ends of the drive shaft (405) are respectively rotatably arranged with two bearing seats (404) through bearings. The outer end of one of the drive shafts (405) is connected and assembled with the output end of an external first drive member (401) through a reducer (402). The first drive member (401) is a servo motor. A synchronous pulley (407) is fixedly installed in the middle of the outer end of the drive shaft (405). The two synchronous pulleys (407) are driven by a toothed transmission belt (406).

3. The flotation treatment device for phosphogypsum according to claim 1, characterized in that: The invention also includes a foam gathering mechanism (600) for cleaning and gathering overflowed impurity foam, wherein the foam gathering mechanism (600) includes a first fixing frame (606) mounted on the upper surface of the cofferdam (500), a fixing shaft (610) being mounted on the upper surface of the first fixing frame (606), the fixing shaft (610) being coaxial with the cofferdam (500), two cross bars (612) being respectively arranged on both sides of the outer surface of the fixing shaft (610), a torsion spring (611) being arranged on the outer surface of the fixing shaft (610) and at the position of each cross bar (612), and the cross bar (612) and the fixing shaft (610) being elastically arranged via the torsion spring (611).

4. The flotation treatment device for phosphogypsum according to claim 3, characterized in that: A vertical rod (604) is fixedly provided at the outer end of the horizontal rod (612), and a surrounding scraper (603) is fixedly provided at the bottom end of the vertical rod (604). The surrounding scraper (603) is designed in a fan-shaped structure. A sealing strip (613) is provided on the outer surface of the surrounding scraper (603). A bubble scraper (602) is fixedly provided on one side of the outer surface of the surrounding scraper (603). The bubble scraper (602) is designed in a fan-shaped structure. The outer surface of the sealing strip (613) contacts the inner surface of the cofferdam (500), and the lower surface of the bubble scraper (602) contacts the upper surface of the flotation tank (100). A track groove (605) is provided through the middle of the upper surface of the cofferdam (500).

5. The flotation treatment device for phosphogypsum according to claim 3, characterized in that: The foam gathering mechanism (600) further includes a second fixed frame (607) mounted on the upper surface of the cofferdam (500), and two fixed winding columns (601) relatively fixed on both sides of the upper surface of the cofferdam (500). A winding wheel (608) is rotatably mounted inside the second fixed frame (607). Two traction lines (614) are respectively provided on both sides of the outer surface of the winding wheel (608). The two ends of the traction line (614) are respectively connected to the winding wheel (608) and the vertical pole (604). The outer end of the winding wheel (608) is connected to the output end of an external second driving member (609) through a coupling. The second driving member (609) is a servo motor.

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