CN223995620U - Separation sedimentation device for red mud washing - Google Patents

Abstract

The utility model relates to the technical field of red mud treatment, in particular to a separation sedimentation device for red mud washing, which comprises a separation tank, a fixed frame, a filter screen, a scraping and sweeping assembly and a first driving mechanism, wherein a containing cavity is arranged in the separation tank, the fixed frame is rotationally arranged in the containing cavity, the cross section width of the fixed frame is linearly reduced from top to bottom, a plurality of hollowed-out installation areas are arranged on the periphery of the fixed frame, the bottom of the fixed frame is arranged in a closed mode and is spaced from the bottom of the containing cavity, the filter screen is arranged on the fixed frame so as to cover the installation areas, the scraping and sweeping assembly is arranged in the containing cavity and used for scraping and sweeping the filter screen, the first driving mechanism is arranged on the separation tank, and the first driving mechanism is in transmission connection with the fixed frame so as to drive the fixed frame to rotate in the containing cavity. According to the utility model, the red mud in the accommodating cavity can be filtered and separated conveniently and rapidly through the fixing frame and the filter screen, and meanwhile, the filter screen is not blocked in the filtering and separating process.

Description

Separation sedimentation device for red mud washing

Technical Field

The utility model relates to the technical field of red mud treatment, in particular to a separation sedimentation device for red mud washing.

Background

Red mud is a solid waste produced by extracting alumina from bauxite by a Bayer process digestion process, and mainly comprises ferric oxide (the content can reach 40-60%), metal oxides such as silicon dioxide, aluminum oxide, titanium oxide and the like, and silicate minerals such as quartz stone, calcite, aragonite, opal and the like. The iron content is high and the iron is red. In industrial production, the mixed slurry of sodium aluminate solution and red mud is subjected to multi-stage separation procedures such as dilution, sedimentation and filtration, wherein the separation efficiency of the sedimentation procedure directly influences the recovery rate of alumina, the alkali consumption index and the process stability of subsequent procedures.

In some separation and sedimentation devices for red mud washing, fine minerals with high hardness such as quartz stone, calcite, aragonite and opal are contained in red mud during filtration and sedimentation, and the minerals are blocked on the sieve holes of a filter screen during filtration, so that the screen is blocked, and the filtration effect is affected.

Disclosure of utility model

Based on the above, the utility model aims to provide a separation sedimentation device for red mud washing, which aims to solve the technical problem that a screen is blocked due to the fact that some fine minerals with higher hardness are blocked on the screen holes of a filter screen during filtration sedimentation.

The red mud washing separation sedimentation device comprises a separation tank, a fixed frame, a filter screen, a scraping and sweeping assembly and a first driving mechanism, wherein a containing cavity is formed in the separation tank, the fixed frame is rotationally arranged in the containing cavity, the cross section width of the fixed frame is linearly reduced from top to bottom, a plurality of hollowed-out installation areas are formed in the periphery of the fixed frame, the bottom of the fixed frame is sealed and arranged at intervals with the bottom of the containing cavity, the filter screen is arranged on the fixed frame so as to cover the installation areas, the scraping and sweeping assembly is arranged in the containing cavity and used for scraping and sweeping the filter screen, the first driving mechanism is arranged on the separation tank, and the first driving mechanism is in transmission connection with the fixed frame so as to drive the fixed frame to rotate in the containing cavity.

According to some embodiments of the utility model, the scraping assembly comprises a scraping plate and a brush, the scraping plate is fixedly connected to the cavity wall of the accommodating cavity, the scraping plate is close to the outer side of the filter screen, the extending direction of the scraping plate is parallel to the side edge of the cross section of the fixed frame, and the brush is arranged on one side of the scraping plate facing the filter screen.

According to some embodiments of the utility model, the scraping assembly further comprises a connecting rod, one end of the connecting rod is fixedly connected to the cavity wall of the accommodating cavity, and the other end of the connecting rod is connected with one side of the scraping plate, which is opposite to the filter screen.

According to some embodiments of the utility model, the first driving mechanism comprises a first driving motor, a shell of the first driving motor is fixedly arranged at the top of the separating tank, and a rotating shaft of the first driving motor extends into the accommodating cavity and is connected with the top of the fixing frame.

According to some embodiments of the utility model, a ring is arranged at the top of the fixed frame, a connecting frame is arranged in a hollow area in the middle of the ring, the connecting frame is connected with a rotating shaft of the first driving motor, and the bottom of the fixed frame is connected with the connecting frame through a connecting rod.

According to some embodiments of the utility model, the separating tank is provided with a feed inlet and a discharge outlet, and the position of the feed inlet is higher than that of the discharge outlet.

According to some embodiments of the utility model, the separation sedimentation device for red mud washing further comprises a mud discharging assembly, the mud discharging assembly is used for discharging the mud at the bottom of the filter screen out of the accommodating cavity, the mud discharging assembly comprises a conveying pipe, a helical blade and a second driving mechanism, the conveying pipe is rotatably connected at a closed position at the bottom of the fixed frame, one end of the conveying pipe extends to the bottom of the surrounding area of the filter screen, the other end of the conveying pipe extends out of the accommodating cavity and is provided with at least one mud discharging opening, the helical blade is rotatably arranged in the conveying pipe, the second driving mechanism is arranged on the conveying pipe, and the second driving mechanism is in transmission connection with the helical blade so as to drive the helical blade to rotate in the conveying pipe.

According to some embodiments of the utility model, the second driving mechanism comprises a second driving motor, a shell of the second driving motor is fixedly arranged at one end of the conveying pipe, which is positioned outside the accommodating cavity, and a rotating shaft of the second driving motor extends into the conveying pipe and is connected with the spiral blade.

According to some embodiments of the utility model, the outer wall of the circular ring is provided with a sliding groove, the cavity wall of the accommodating cavity is provided with a fixed block, the fixed block is arranged in a clearance with the outer wall of the circular ring, one side of the fixed block, which is close to the circular ring, is provided with a groove, and a rolling assembly is arranged between the sliding groove and the groove.

According to some embodiments of the utility model, the rolling assembly comprises a pulley and a connecting shaft, two ends of the connecting shaft are respectively and fixedly arranged on two side walls of the groove, the pulley is rotatably arranged on the connecting shaft, and the peripheral surface of the pulley is abutted against the bottom wall of the chute.

According to the separating and settling device for red mud washing, the first driving mechanism drives the fixed frame and the filter screen to integrally rotate in the accommodating cavity at a high speed, red mud and sludge poured into the separating tank are filtered and separated by utilizing centrifugal force, in the filtering and separating process, hard mineral substances blocked on the filter screen can be cleaned through the scraping and sweeping assemblies on two sides of the filter screen, the filter screen is prevented from being blocked, and therefore the red mud and sludge can be filtered and separated conveniently and rapidly, meanwhile, red mud accumulated at the bottom of the filter screen can be conveyed out conveniently and rapidly through the mud discharging assembly, and the efficiency in filtering is improved.

Drawings

FIG. 1 is a schematic diagram of a separation sedimentation device for red mud washing according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a separator tank in an embodiment of the utility model;

FIG. 3 is an assembly diagram of a fixing frame and a filter according to an embodiment of the present utility model;

FIG. 4 is an enlarged view of a portion of FIG. 1 at A;

In the figure:

1. A separation tank; 2, a first driving motor, 3, a feed inlet, 4, a discharge port, 5, a support column, 6, a fixed frame, 61, a circular ring, 7, a filter screen, 8, a scraping plate, 9, a connecting rod, 10, a conveying pipe, 11, a helical blade, 12, a second driving motor, 13, a mud discharging port, 14, a conical block, 15, a transmission shaft, 16, a connecting frame, 17, a sliding chute, 18, a fixed block, 19, a groove, 20, a pulley, 21, a brush, 22, a containing cavity, 23, a mounting area, 24 and a connecting shaft.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, plural means two or more. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1 to 4, the utility model discloses a separation sedimentation device for red mud washing, which comprises a separation tank 1, a fixed frame 6, a filter screen 7, a scraping assembly and a first driving mechanism. Specifically, the inside of knockout drum 1 is equipped with holds chamber 22, hold chamber 22 and be used for splendid attire red mud, the lower extreme external surface fixedly connected with support column 5 of knockout drum 1 plays the fixed effect of support, fixed frame 6 rotates to be located in holding chamber 22, fixed frame 6 presents the inverted cone, and the week side of fixed frame 6 is equipped with the installation region 23 of a plurality of fretwork, the bottom closure setting of fixed frame 6, filter screen 7 is installed on fixed frame 6, with cover installation region 23, filter screen 7 so fixed can conveniently filter out the red mud in the red mud sediment, the bottom of fixed frame 6 and the bottom interval setting of holding chamber 22, can avoid the mixed liquor after the filter screen 7 filters to pour into filter screen 7 inside again, scrape and sweep the subassembly and locate in holding chamber 22, be used for scraping and sweep filter screen 7, first actuating mechanism locates on knockout drum 1, first actuating mechanism is connected with fixed frame 6 transmission, in order to drive fixed frame 6 in holding chamber 22 rotation.

In this embodiment, the fixed frame 6 of inverted cone and the filtration of filter screen 7 have lower focus, and overall stability is high when bearing pressure, can make red mud more abundant with filter screen 7 contact moreover, and improve filtration efficiency, in addition can guide red mud to flow along the inclined plane, reduce the detention time of red mud at filter screen 7 surface and reduce the jam probability on filter screen 7 surface, the impurity of interception can be concentrated to the bottom naturally in the filtration process, be convenient for clear up the impurity, reduce the degree of difficulty and the time of clearance work.

In some embodiments of the present utility model, the scraping assembly includes a scraping plate 8 and a brush 21, the scraping plate 8 is fixedly connected to a cavity wall of the accommodating cavity 22, the scraping plate 8 is close to the outer side of the filter screen 7, but the scraping plate 8 does not contact the filter screen 7, the extending direction of the scraping plate 8 is parallel to the side of the cross section of the fixing frame 6, the brush 21 is arranged on the side of the scraping plate 8 facing the filter screen 7, and the brush 21 contacts the filter screen 7.

In the present embodiment, by the scraper 8 and the brush 21 being provided, under the combined action of the scraper 8 and the brush 21 and the rotating filter screen 7, the hard minerals and red mud blocked on the filter screen 7 collide with the scraper 8 and the brush 21 to loosen and fall off from the filter screen 7.

In some embodiments of the present utility model, the scraping assembly further comprises a connecting rod 9, one end of the connecting rod 9 is fixedly connected to the cavity wall of the accommodating cavity 22, and the other end of the connecting rod 9 is connected to the side of the scraping plate 8 facing away from the filter screen 7.

In some embodiments of the present utility model, the first driving mechanism includes a first driving motor 2, a housing of the first driving motor 2 is fixedly arranged at the top of the separation tank 1, a rotating shaft of the first driving motor 2 extends into the accommodating cavity 22, and then the rotating shaft of the first driving motor 2 is connected with the top of the fixed frame 6. When the first driving motor 2 is in a working state, the fixed frame 6 is driven to rotate, and the filter screen 7 is driven to rotate together.

In some embodiments of the present utility model, as shown in fig. 1, a ring 61 is disposed at the top of the fixed frame 6, a connecting frame 16 is disposed in a hollow area in the middle of the ring 61, the connecting frame 16 is connected with a rotating shaft of the first driving motor 2, and the bottom of the fixed frame 6 is connected with the connecting frame 16 through a connecting rod 9. Alternatively, the rotating shaft of the first driving motor 2 may be connected to the connecting frame 16 through the transmission shaft 15, the transmission shaft 15 and the connecting frame 16 are located in the middle of the fixed frame 6, and the fixed frames 6 with different distances may be adapted through the transmission shaft 15.

In some embodiments of the present utility model, as shown in fig. 1 and 2, the outer surface of the upper end of the separation tank 1 is provided with a feed port 3, the outer walls of the left and right sides of the separation tank 1 are provided with discharge ports 4, and the position of the feed port 3 is higher than the position of the discharge ports 4.

In some embodiments of the present utility model, as shown in FIG. 2, a tapered block 14 is fixedly attached to the bottom of the receiving chamber 22. In this embodiment, through setting up toper piece 14, can conveniently raise fixed frame 6 and filter screen 7, realize the bottom of fixed frame 6 and hold the purpose that the bottom interval set up of chamber 22, simultaneously because toper piece 14 can provide ascending holding power, can avoid fixed frame 6 and hold the chamber wall of chamber 22 and bear more red mud because of filter screen 7 and take place the jam when rotating.

In some embodiments of the utility model, the separation sedimentation device for red mud washing further comprises a mud discharging assembly for discharging the mud at the bottom of the filter screen 7 out of the accommodating cavity 22, wherein the mud discharging assembly comprises a conveying pipe 10, a spiral blade 11 and a second driving mechanism. Specifically, the conveying pipe 10 is rotatably connected at a closed position at the bottom of the fixed frame 6, the central axis of the conveying pipe 10 coincides with the rotation axis of the fixed frame 6, the upper end of the conveying pipe 10 extends to the bottom of the area surrounded by the filter screen 7, the lower end of the conveying pipe 10 extends to the outside of the accommodating cavity 22, and the lower end of the conveying pipe 10 is provided with two sludge discharge ports 13. The helical blade 11 is rotatably arranged in the conveying pipe 10, and the second driving mechanism is arranged on the conveying pipe 10 and is in transmission connection with the helical blade 11 so as to drive the helical blade 11 to rotate in the conveying pipe 10. In this embodiment, through setting up helical blade 11, can be fast with the impurity of the filtration of the closed position department of filter screen 7 near fixed frame 6 bottom discharge fast, avoid some higher mineral substance of hardness to pile up in the bottom of filter screen 7, influence the filtration of filter screen 7.

In some embodiments of the present utility model, the second driving mechanism includes a second driving motor 12, a housing of the second driving motor 12 is fixedly disposed at one end of the conveying pipe 10 located outside the accommodating cavity 22, and a rotating shaft of the second driving motor 12 extends into the conveying pipe 10 and is connected to the helical blade 11.

In some embodiments of the present utility model, the outer wall of the ring 61 is provided with a chute 17, the cavity wall of the accommodating cavity 22 is provided with a fixed block 18, the fixed block 18 is arranged in a gap with the outer wall of the ring 61, one side of the fixed block 18, which is close to the ring 61, is provided with a groove 19, and a rolling assembly is arranged between the chute 17 and the groove 19.

In some embodiments of the present utility model, the rolling assembly includes a pulley 20 and a connecting shaft 24, two ends of the connecting shaft 24 are respectively fixed on two side walls of the groove 19, the pulley 20 is rotatably disposed on the connecting shaft 24, and a peripheral surface of the pulley 20 abuts against a bottom wall of the chute 17. In the present embodiment, by the cooperation of the chute 17 and the pulley 20, the assembly structure of the filter screen 7 and the fixed frame 6 can be smoothly rotated when the fixed frame 6 is rotated at a high speed with respect to the separation tank 1.

The working principle of the separation sedimentation device for red mud washing of the application is described in detail as follows:

When the red mud filter is used, the first driving motor 2 is started firstly, the transmission shaft 15 is driven to rotate under the rotation of the first driving motor 2, the fixed frame 6 and the filter screen 7 are driven to rotate at high speed under the rotation of the transmission shaft 15, red mud sludge is poured into the separating tank 1 to be filtered and separated, in the filtering and separating process, hard mineral substances blocked on the filter screen 7 can be cleaned through the scraping plates 8 and the hairbrushes 21 at two sides of the filter screen 7, so that red mud and sludge are filtered and separated rapidly, the filter screen 7 cannot be blocked in the filtering and separating process, the second driving motor 12 is started after a period of operation, the second driving motor 12 drives the spiral blades 11 to rotate, and red mud accumulated at the bottom of the filter screen 7 is conveyed out rapidly.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims (10)

1. The separation sedimentation device for red mud washing is characterized by comprising:

the separating tank is internally provided with a containing cavity;

The fixing frame is rotationally arranged in the accommodating cavity, the cross section width of the fixing frame is linearly reduced from top to bottom, a plurality of hollowed-out installation areas are arranged on the periphery of the fixing frame, and the bottom of the fixing frame is sealed and arranged at intervals with the bottom of the accommodating cavity;

The filter screen is arranged on the fixed frame so as to cover the installation area;

the scraping and sweeping assembly is arranged in the accommodating cavity and is used for scraping and sweeping the filter screen;

The first driving mechanism is arranged on the separating tank and is in transmission connection with the fixed frame so as to drive the fixed frame to rotate in the accommodating cavity.

2. The separation settling device for red mud washing of claim 1, wherein the scraping assembly comprises:

The scraping plate is fixedly connected to the cavity wall of the accommodating cavity, the scraping plate is close to the outer side of the filter screen, and the extending direction of the scraping plate is parallel to the side edge of the cross section of the fixing frame;

The brush is arranged on one side of the scraping plate facing the filter screen.

3. The separation sedimentation device for red mud washing according to claim 2, wherein the scraping and sweeping assembly further comprises a connecting rod, one end of the connecting rod is fixedly connected to the cavity wall of the accommodating cavity, and the other end of the connecting rod is connected with one side of the scraping plate, which is opposite to the filter screen.

4. The separation sedimentation device for red mud washing according to claim 1, wherein the first driving mechanism comprises a first driving motor, a shell of the first driving motor is fixedly arranged at the top of the separation tank, and a rotating shaft of the first driving motor extends into the accommodating cavity and is connected with the top of the fixed frame.

5. The separation sedimentation device for red mud washing according to claim 4, wherein the top of the fixed frame is provided with a circular ring, a connecting frame is arranged in the hollow area in the middle of the circular ring, the connecting frame is connected with the rotating shaft of the first driving motor, and the bottom of the fixed frame is connected with the connecting frame through a connecting rod.

6. The separation sedimentation device for red mud washing according to claim 1, wherein a feed port and a discharge port are arranged on the separation tank, and the position of the feed port is higher than that of the discharge port.

7. The red mud washing separation settling device of any one of claims 1 to 6, further comprising a sludge discharge assembly for discharging sludge at the bottom of the filter screen out of the receiving chamber, the sludge discharge assembly comprising:

the conveying pipe is rotatably connected to the closed position at the bottom of the fixed frame, and one end of the conveying pipe extends to the bottom of the surrounding area of the filter screen;

the spiral blade is rotationally arranged in the conveying pipe;

The second driving mechanism is arranged on the conveying pipe and is in transmission connection with the spiral blade so as to drive the spiral blade to rotate in the conveying pipe.

8. The separation sedimentation device for red mud washing according to claim 7, wherein the second driving mechanism comprises a second driving motor, a shell of the second driving motor is fixedly arranged at one end of the conveying pipe, which is positioned outside the accommodating cavity, and a rotating shaft of the second driving motor extends into the conveying pipe and is connected with the spiral blade.

9. The separation sedimentation device for red mud washing according to claim 5, wherein a chute is formed in the outer wall of the circular ring, a fixed block is arranged on the cavity wall of the accommodating cavity, the fixed block is arranged in a clearance with the outer wall of the circular ring, a groove is formed in one side, close to the circular ring, of the fixed block, and a rolling assembly is arranged between the chute and the groove.

10. The separation sedimentation device for red mud washing according to claim 9, wherein the rolling assembly comprises a pulley and a connecting shaft, both ends of the connecting shaft are respectively fixedly arranged on two side walls of the groove, the pulley is rotatably arranged on the connecting shaft, and the peripheral surface of the pulley is abutted against the bottom wall of the chute.