Tailing lifting device of flotation column and flotation column

Abstract

The utility model relates to the technical field of flotation, in particular to a tailing lifting device of a flotation column and the flotation column. The utility model provides a tailing lifting device of a flotation column. The tailing lifting device comprises a tailing barrel, a fixed sleeve, a sliding sleeve and a driving assembly. Discharging holes are formed in the side wall of the tailing barrel; the fixed sleeve is vertically and fixedly arranged in the tailing barrel, and the lower end of the fixed sleeve extends out of the tailing barrel and is used for communicating with a tailing discharging mechanism; the fixed sleeve is sleeved with the sliding sleeve in a sliding mode, and tailing slurry overflows to the tailing barrel through the upper end of the sliding sleeve; the driving assembly is arranged on the tailing barrel and drives the sliding sleeve to slide on the fixed sleeve. Tailing pulp enters the tailing barrel of the tailing lifting device from the upper end of the sliding sleeve in an overflow mode, and during use, the position of the sliding sleeve is adjusted through the driving assembly, so that the overflow liquid level of the tailing pulp can be adjusted, the liquid level of the tailing pulp in the flotation column is adjusted, and the flotation concentrate grade and yield are adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of flotation, in particular to a tailings lifting device of a flotation column and a flotation column. Background Art

[0002] The flotation column is a highly efficient and energy-saving mineral processing equipment, which is widely used in mineral processing, metallurgy, coal cleaning and other industries. Usually, the flotation column generally includes: a cylindrical barrel, an aerator, a ore feeding device, a foam overflow or scraping device, a compressed air input system and a tailings discharge system. During the operation of the flotation column, the liquid level of the tailings slurry in the flotation column directly affects the grade and yield of the flotation concentrate, and is a very important part of the flotation column. In view of this, the utility model proposes a flotation column tailings lifting device and a flotation column including the above-mentioned flotation column tailings lifting device, which are used to adjust the liquid level of the flotation column tailings slurry. Utility Model Content

[0003] One of the purposes of the utility model is to provide a tailings lifting device for a flotation column, which is used to adjust the liquid level of tailings slurry in the flotation column. The utility model also provides a flotation column, including the tailings lifting device for the flotation column.

[0004] In one aspect, the utility model provides a tailings lifting device for a flotation column, wherein the flotation column comprises a tailings discharging mechanism; the tailings lifting device comprises: a tailings cylinder, a fixed sleeve, a sliding sleeve and a driving assembly;

[0005] The tailings cylinder is hollow inside, and a discharge hole communicating with the outside is opened on the side wall;

[0006] The fixed sleeve is vertically fixed in the tailings cylinder, and the lower end of the fixed sleeve extends out of the tailings cylinder and is used to communicate with the tailings discharge mechanism;

[0007] The sliding sleeve is slidably mounted on the fixed sleeve, and the tailings slurry overflows into the tailings cylinder through the upper end of the sliding sleeve;

[0008] The driving assembly is arranged on the tailings cylinder, is connected to the sliding sleeve, and drives the sliding sleeve to slide on the fixed sleeve.

[0009] Further, the driving assembly includes a screw rod and a driving member;

[0010] The screw rod is arranged on the tailings cylinder, and one end of the screw rod is connected to the sliding sleeve, and the other end of the screw rod is connected to the driving member. The driving member drives the screw rod to move along its own axial direction on the tailings cylinder.

[0011] Furthermore, the driving member is a hand wheel.

[0012] Furthermore, the driving assembly also includes a screw nut;

[0013] The screw nut is fixed on the hand wheel and is rotatably arranged on the tailings cylinder. The screw is inserted into the screw nut.

[0014] Furthermore, a bracket is provided at the upper end of the tailings cylinder, and the screw nut is provided on the bracket.

[0015] Furthermore, the bracket is provided with a wear-resistant fixing sleeve, and the screw nut is rotatably arranged in the wear-resistant fixing sleeve.

[0016] Furthermore, the tailings lifting device also includes a connecting assembly;

[0017] The connecting assembly is arranged at the upper end of the sliding sleeve, and the screw rod is rotationally connected to the connecting assembly.

[0018] Further, the connection assembly includes a crossbeam and a connecting rod;

[0019] The screw rod is connected to the cross beam, and the cross beam is connected to the sliding sleeve through the connecting rod.

[0020] Furthermore, the connecting rod is a stud bolt.

[0021] Another embodiment of the utility model further provides a flotation column, including the tailings lifting device of the flotation column described in any of the above embodiments.

[0022] Beneficial effects of the utility model:

[0023] The utility model provides a tailings lifting device for a flotation column, the flotation column comprises a tailings discharging mechanism; the tailings lifting device comprises: a tailings cylinder, a fixed sleeve, a sliding sleeve and a driving assembly; the tailings cylinder is hollow inside, and a side wall is provided with a discharging hole communicating with the outside; the fixed sleeve is vertically fixed in the tailings cylinder, and the lower end of the fixed sleeve extends out of the tailings cylinder and is used to communicate with the tailings discharging mechanism; the sliding sleeve can be slidably mounted on the fixed sleeve, and the tailings slurry overflows into the tailings cylinder through the upper end of the sliding sleeve; the driving assembly is arranged on the tailings cylinder, the driving assembly is connected to the sliding sleeve, and drives the sliding sleeve to slide on the fixed sleeve.

[0024] The tailings lifting device is connected to the tailings discharge mechanism of the flotation column. The tailings slurry enters the tailings cylinder of the tailings lifting device from the upper end of the sliding sleeve by overflow. When in use, the position of the sliding sleeve is adjusted by the driving component, so that the overflow level of the tailings slurry can be adjusted, thereby adjusting the liquid level of the tailings slurry in the flotation column, thereby adjusting the flotation concentrate grade and yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the structure of a flotation column with a tailings lifting device provided in an embodiment of the utility model;

[0027] Figure 2 A schematic structural diagram of a tailings lifting device provided in an embodiment of the utility model.

[0028] Icons: 11- ore pulp preprocessor; 12- concentrate collection mechanism; 13- feeding mechanism; 14- middling cyclone mechanism; 15- tailings discharge mechanism; 16- middling distributor; 17- microbubble generator; 19- column;

[0029] 21-tailings cylinder; 22-fixed sleeve; 23-sliding sleeve; 24-screw; 25-driving member; 251-handwheel; 26-crossbeam; 27-connecting rod; 271-stud bolt; 28-screw nut; 29-wear-resistant fixing sleeve; 30-bracket. DETAILED DESCRIPTION

[0030] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] like Figure 1 and Figure 2As shown, one embodiment of the utility model provides a tailings lifting device for a flotation column, and the tailings lifting device is applied to a flotation column, and the flotation column includes a tailings discharge mechanism 15. Further, the tailings lifting device includes: a tailings cylinder 21, a fixed sleeve 22, a sliding sleeve 23 and a driving assembly; the tailings cylinder 21 is hollow inside, and a discharge hole connected to the outside is opened on the side wall; the fixed sleeve 22 is vertically fixed in the tailings cylinder 21, and the lower end of the fixed sleeve 22 extends out of the tailings cylinder 21 and is used to communicate with the tailings discharge mechanism 15; the sliding sleeve 23 can be slidably mounted on the fixed sleeve 22, and the tailings slurry overflows into the tailings cylinder 21 through the upper end of the sliding sleeve 23; the driving assembly is arranged on the tailings cylinder 21, the driving assembly is connected to the sliding sleeve 23, and drives the sliding sleeve 23 to slide on the fixed sleeve 22.

[0032] The tailings lifting device provided in this embodiment is applied to a flotation column, wherein the flotation column includes a column 19, a slurry preprocessor 11, a concentrate collecting mechanism 12, a feeding mechanism 13, a middling cyclone mechanism 14, a tailings discharging mechanism 15, a middling distributor 16, and a micro-bubble generator 17. During use, the feed slurry is fully mixed with the reagent in the slurry preprocessor 11, and then enters the column 19 through the feeding mechanism 13 and fully counter-currently collides with the rising micro-bubbles distributed on the cross section of the column 19, and the lighter concentrate overflows from the upper concentrate collecting mechanism 12 in an overflow manner, and the heavier tailings are discharged through the tailings discharging mechanism 15 located at the bottom of the column 19. In order to improve the concentrate recovery rate, the middling slurry is transported from the middle of the column 19 to the middling distributor 16 above through the middling circulation pump, and then transported to the microbubble generator 17 through multiple branch pipes by the middling distributor 16, and then transported to the middling cyclone mechanism 14 to form a cyclone force field. The lighter flotation clean coal cyclones up, and the heavier tailings cyclones to the bottom of the main body under the action of gravity, enter the tailings discharge tank through static pressure, and then are discharged to the tailings barrel.

[0033] Further, the tailings lifting device provided in this embodiment includes a tailings cylinder 21, a fixed sleeve 22, a sliding sleeve 23 and a driving assembly. Among them, the tailings cylinder 21 is the main body of the tailings lifting device, and its interior is hollow, including a top wall, a bottom wall and a side wall connected between the top wall and the bottom wall, and a discharge hole is opened on the side wall to connect the inside of the tailings cylinder 21 with the outside, and the tailings slurry entering the tailings cylinder 21 can be discharged outward through the discharge hole. The fixed sleeve 22 is a cylindrical structure with open ends, and the fixed sleeve 22 is arranged on the bottom wall of the tailings cylinder 21. Specifically, the bottom wall of the tailings cylinder 21 is opened with a through hole, and the fixed sleeve 22 is arranged in the through hole, and the outer edge of the fixed sleeve 22 is fixedly connected to the inner edge of the through hole, and the axis of the fixed sleeve 22 is parallel to the axis of the tailings cylinder 21. Preferably, the axis direction of the fixed sleeve 22 coincides with the axis of the tailings cylinder 21, and both are arranged vertically. One end of the fixed sleeve 22 is located outside the tailings cylinder 21 and is used to communicate with the tailings discharge mechanism 15 of the flotation column. The two can be connected by flanges. The other end of the fixed sleeve 22 is located inside the tailings cylinder 21, so that the tailings slurry discharged by the tailings discharge mechanism 15 can enter the tailings cylinder 21. The sliding sleeve 23 is also a cylindrical mechanism with open ends. The sliding sleeve 23 is mounted on the fixed sleeve 22, and the two can slide relative to each other. When in use, the tailings slurry enters the fixed sleeve 22 and overflows from the upper end of the sliding sleeve 23 into the tailings cylinder 21. The drive assembly is arranged on the tailings cylinder 21, and the drive assembly is connected to the sliding sleeve 23 and can drive the sliding sleeve 23 to slide on the fixed sleeve 22. The sliding sleeve 23 is driven to slide by the drive assembly, so that the overflow level of the tailings slurry can be adjusted.

[0034] Optionally, in this embodiment, the sliding sleeve 23 can be directly sleeved outside the fixed sleeve 22, or a structure such as a slide rail can be provided between the inner wall of the sliding sleeve 23 and the outer wall of the fixed sleeve 22 to ensure the stability of the sliding sleeve 23 when sliding.

[0035] The tailings lifting device of the flotation column provided in this embodiment is connected to the tailings discharging mechanism 15 located at the bottom of the flotation column body 19, so that the tailings lifting device and the interior of the column body 19 form a "communicating vessel" structure, and the tailings slurry enters the tailings cylinder 21 of the tailings lifting device from the upper end of the sliding sleeve 23 by overflow. When in use, the position of the sliding sleeve 23 is adjusted by the driving component, so that the overflow level of the tailings slurry can be adjusted, thereby adjusting the liquid level of the tailings slurry in the flotation column, thereby adjusting the flotation concentrate grade and yield.

[0036] The tailings lifting device of the flotation column provided in the embodiment of the utility model is as follows: Figure 2As shown, the driving assembly includes a screw rod 24 and a driving member 25; the screw rod 24 is arranged on the tailings cylinder 21, and one end is connected to the sliding sleeve 23, and the other end is connected to the driving member 25. The driving member 25 drives the screw rod 24 to move along its own axial direction on the tailings cylinder 21.

[0037] In this embodiment, the drive assembly is driven by a screw rod 24 and a driving member 25, and the screw rod 24 has the advantages of simple structure and strong stability. Specifically, the screw rod 24 is arranged on the tailings cylinder 21 through the driving member 25. When in use, the driving member 25 rotates relative to the screw rod 24, so that the screw rod 24 can move along its own axial direction on the tailings cylinder 21, thereby driving the sliding sleeve 23 connected to the screw rod 24 to slide on the fixed sleeve 22. The driving member 25 is connected to one end of the screw rod 24 away from the sliding sleeve 23, and is used to drive the screw rod 24 to move, thereby driving the sliding sleeve 23 to move.

[0038] It is understandable that, in this embodiment, the driving component may also adopt a telescopic cylinder such as a pneumatic cylinder, an oil cylinder or an electric cylinder, which can also achieve the purpose of being connected to the sliding sleeve 23 and driving the sliding sleeve 23 to move in this embodiment.

[0039] In this embodiment, the driving member 25 rotates to drive the screw rod 24 to move along the axial direction of the screw rod 24 itself, that is, the screw rod 24 does not rotate, thereby preventing the sliding sleeve 23 from rotating with the screw rod 24 during use, thereby facilitating operation by operators.

[0040] The tailings lifting device of the flotation column provided in the embodiment of the utility model is as follows: Figure 2 As shown, the driving member 25 is a hand wheel 251 .

[0041] Optionally, in this embodiment, the driving member 25 is a hand wheel 251, which is rotatably arranged at the top of the tailings cylinder 21; the hand wheel 251 has a center hole, and during assembly, an internal thread structure matching the screw rod 24 may be machined in the center hole, so that the screw rod 24 can be assembled to the tailings cylinder 21 through the hand wheel 251, or a screw nut 28 matching the screw rod 24 may be arranged in the center hole of the hand wheel 251. During use, by rotating the hand wheel 251, under the action of the hand wheel 251, the screw rod 24 can move along its axial direction. By setting the driving member 25 as the hand wheel 251, the hand wheel 251 has the characteristics of simple structure and low cost.

[0042] It can be understood that in this embodiment, the driving member 25 can also be a driving motor, the shaft of the driving motor is a hollow shaft and has an internal thread structure that matches the screw rod 24. In this way, it can also achieve the purpose of driving the screw rod 24 to move along its own axial direction in this embodiment.

[0043] The tailings lifting device of the flotation column provided in the embodiment of the utility model is as follows: Figure 2 As shown, the driving assembly further includes a screw nut 28 ; the screw nut 28 is fixed on the hand wheel 251 and is rotatably disposed on the tailings cylinder 21 , and the screw 24 is inserted into the screw nut 28 .

[0044] Furthermore, in the present embodiment, the driving assembly also includes a screw nut 28, which is arranged corresponding to the above-mentioned screw 24. The screw nut 28 is fixed to the center hole of the handwheel 251 and is also rotatably arranged on the tailings cylinder 21. In this way, the handwheel 251 can be rotatably installed on the tailings cylinder 21, and the screw 24 is passed through the above-mentioned screw nut 28. When in use, by rotating the handwheel 251, the screw 24 can be driven to move along its own axial direction, thereby driving the sliding sleeve 23 connected thereto to move.

[0045] The tailings lifting device of the flotation column provided in the embodiment of the utility model is as follows: Figure 2 As shown, a bracket 30 is provided at the upper end of the tailings cylinder 21 , and the screw nut 28 is provided on the bracket 30 .

[0046] In this embodiment, a bracket 30 is further provided at the upper end of the tailings cylinder 21, and a hole for mounting the screw nut 28 is provided on the bracket 30, so that the screw nut 28 can be rotatably arranged on the tailings cylinder 21. By arranging the bracket 30 on the tailings cylinder 21, the structure of the tailings lifting device can be modularized, thereby facilitating transportation, assembly and production, and facilitating inspection and maintenance by operators.

[0047] Furthermore, the tailings lifting device of the flotation column provided in the embodiment of the utility model is as follows: Figure 2 As shown, the bracket 30 is provided with a wear-resistant fixing sleeve 29 , and the screw nut 28 is rotatably disposed in the wear-resistant fixing sleeve 29 .

[0048] In this embodiment, in order to improve the wear resistance of the bracket 30, a wear-resistant sleeve is also provided on the bracket 30, and the screw nut 28 is rotatably arranged in the wear-resistant sleeve, thereby avoiding wear of the bracket 30 during long-term use. The wear-resistant sleeve can be made of wear-resistant alloys, or wear-resistant materials such as ceramics.

[0049] The tailings lifting device of the flotation column provided in the embodiment of the utility model is as follows: Figure 2 As shown, the tailings lifting device further includes a connecting assembly; the connecting assembly is arranged at the upper end of the sliding sleeve 23, and the screw rod 24 is rotatably connected to the connecting assembly.

[0050] In this embodiment, the tailings lifting device also includes a connecting assembly for connecting the sliding sleeve 23 and the screw rod 24. By setting the connecting assembly, the screw rod 24 can be kept away from the sliding sleeve 23 to avoid contact between the tailings slurry and the screw rod 24, thereby preventing the normal operation of the screw rod 24 from being affected.

[0051] Specifically, the tailings lifting device of the flotation column provided in the embodiment of the utility model is as follows: Figure 2 As shown, the connecting assembly includes a crossbeam 26 and a connecting rod 27 ; the screw rod 24 is connected to the crossbeam 26 , and the crossbeam 26 is connected to the sliding sleeve 23 via the connecting rod 27 .

[0052] In this embodiment, the connecting assembly is a frame structure, which includes a crossbeam 26 and a connecting rod 27. The end of the screw rod 24 away from the hand wheel 251 is fixedly connected to the center of the crossbeam 26. A plurality of connecting rods 27 are provided. In this embodiment, two are preferably provided to save costs. The two connecting rods 27 are respectively located at both ends of the crossbeam 26, so as to ensure that the crossbeam 26 is evenly stressed. When there are three or more connecting rods 27, all connecting rods 27 are evenly arranged on the crossbeam 26. The end of the connecting rod 27 away from the crossbeam 26 is fixedly connected to the above-mentioned sliding sleeve 23. Through the above structural coordination, the distance between the sliding sleeve 23 and the screw rod 24 can be increased, and the tailings slurry is prevented from contacting the screw rod 24, thereby affecting the service life of the screw rod 24.

[0053] The tailings lifting device of the flotation column provided in the embodiment of the utility model is as follows: Figure 2 As shown, the connecting rod 27 is a stud bolt 271 .

[0054] In this embodiment, preferably, the connecting rod 27 is a stud bolt 271, which can not only achieve the purpose of connecting the cross beam 26 and the sliding sleeve 23, but also adjust the distance between the cross beam 26 and the sliding sleeve 23, thereby improving the applicability of the tailings lifting device and matching tailings cylinders 21 of various lengths.

[0055] It can be understood that, in this embodiment, the connecting rod 27 can also be a common metal part, which can also achieve the purpose of connecting the crossbeam 26 and the sliding sleeve 23 in this embodiment.

[0056] Another embodiment of the utility model further provides a flotation column, comprising the tailings lifting device of the flotation column described in any of the above embodiments.

[0057] The flotation column provided in this embodiment includes the tailings lifting device mentioned above. By setting the tailings lifting device, the tailings lifting device is connected to the tailings discharge mechanism 15 located at the bottom of the flotation column body 19, so that the tailings lifting device and the interior of the column 19 form a "communicating vessel" structure, and the tailings slurry enters the tailings cylinder 21 of the tailings lifting device from the upper end of the sliding sleeve 23 in an overflow manner. When in use, the position of the sliding sleeve 23 is adjusted by the driving component, so that the overflow level of the tailings slurry can be adjusted, thereby adjusting the liquid level of the tailings slurry in the flotation column, thereby adjusting the flotation concentrate grade and yield.

[0058] In the description of the present invention, it should be noted that the terms "upper" and "lower" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0059] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tailings lifting device for a flotation column, the flotation column comprising a tailings discharge mechanism (15); characterized in that: The tailings lifting device comprises: a tailings cylinder (21), a fixed sleeve (22), a sliding sleeve (23) and a driving assembly; The tailings cylinder (21) is hollow inside, and a discharge hole communicating with the outside is opened on the side wall; The fixed sleeve (22) is vertically fixed in the tailings cylinder (21), and the lower end of the fixed sleeve (22) extends out of the tailings cylinder (21) and is used to communicate with the tailings discharge mechanism (15); The sliding sleeve (23) is slidably mounted on the fixed sleeve (22), and the tailings slurry overflows into the tailings cylinder (21) through the upper end of the sliding sleeve (23); The driving assembly is arranged on the tailings cylinder (21), is connected to the sliding sleeve (23), and drives the sliding sleeve (23) to slide on the fixed sleeve (22).

2. The tailings lifting device of the flotation column according to claim 1, characterized in that: The driving assembly comprises a screw rod (24) and a driving member (25); The screw rod (24) is arranged on the tailings cylinder (21), and one end of the screw rod is connected to the sliding sleeve (23), and the other end of the screw rod is connected to the driving member (25). The driving member (25) drives the screw rod (24) to move along its own axial direction on the tailings cylinder (21).

3. The tailings lifting device of the flotation column according to claim 2, characterized in that: The driving member (25) is a hand wheel (251).

4. The tailings lifting device of the flotation column according to claim 3, characterized in that: The drive assembly also includes a screw nut (28); The screw nut (28) is fixed on the hand wheel (251) and is rotatably arranged on the tailings cylinder (21). The screw (24) is inserted into the screw nut (28).

5. The tailings lifting device of the flotation column according to claim 4, characterized in that: A bracket (30) is provided at the upper end of the tailings cylinder (21), and the screw nut (28) is arranged on the bracket (30).

6. The tailings lifting device of the flotation column according to claim 5, characterized in that: The bracket (30) is provided with a wear-resistant fixing sleeve (29), and the screw nut (28) is rotatably arranged in the wear-resistant fixing sleeve (29).

7. The tailings lifting device of the flotation column according to claim 2, characterized in that: The tailings lifting device also includes a connecting assembly; The connecting assembly is arranged at the upper end of the sliding sleeve (23), and the screw rod (24) is rotationally connected to the connecting assembly.

8. The tailings lifting device of the flotation column according to claim 7, characterized in that: The connecting assembly comprises a crossbeam (26) and a connecting rod (27); The screw rod (24) is connected to the cross beam (26), and the cross beam (26) is connected to the sliding sleeve (23) via the connecting rod (27).

9. The tailings lifting device of the flotation column according to claim 8, characterized in that: The connecting rod (27) is a stud bolt (271).

10. A flotation column, characterized in that: A tailings lifting device comprising a flotation column as claimed in any one of claims 1 to 9.

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