Multi-stage screening equipment

Abstract

The utility model relates to the technical field of mineral separation, and particularly discloses a multi-stage screening device which comprises flotation mechanisms which are sequentially arranged at intervals and used for carrying out flotation on ores, and a transfer mechanism used for transferring and re-selecting the flotation ores is arranged between the flotation mechanisms. The flotation mechanism comprises seven flotation boxes which are sequentially communicated, flotation assemblies are arranged on the flotation boxes, collecting boxes for collecting foam are arranged on the front sides of the flotation boxes, waste discharge pipes are arranged at the lower positions of the rear ends of the flotation boxes, and communication assemblies are arranged among the flotation boxes. By means of the flotation boxes which are sequentially arranged at intervals, after ore pulp is subjected to flotation through the flotation boxes, foam minerals are scraped and covered into the collecting box at the front end, the ore pulp flows into the next flotation box to be subjected to flotation again, the foam minerals move into the flotation box on the front side through the transfer assembly till the last flotation boxes are subjected to flotation, and if no foam minerals exist, the foam minerals are directly discharged. And continuous operation of multi-stage screening can be achieved, and the mineral screening efficiency and quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mineral processing, in particular to a multi-stage screening device. Background Art

[0002] According to the physical and chemical properties of different minerals in the ore, after the ore is crushed and ground, gravity separation, flotation, magnetic separation, electrostatic separation, etc. are used to separate useful minerals from gangue minerals, and to separate various symbiotic (associated) useful minerals from each other as much as possible, remove or reduce harmful impurities, and obtain the raw materials required for smelting or other industries. Mineral processing can enrich the useful components in the minerals, reduce the consumption of fuel and transportation in smelting or other processing processes, and enable low-grade ores to be economically utilized. At present, when flotation of minerals, it is mainly carried out by a single flotation machine. After flotation, a large amount of useful minerals still exist in the slurry, and repeated flotation back and forth is required. This causes inconvenience to the flotation of the minerals and affects the efficiency of mineral screening. Utility Model Content

[0003] The purpose of this utility model is to provide a multi-stage screening device in order to solve the above problems.

[0004] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0005] A multi-stage screening device comprises flotation mechanisms arranged in sequence and spaced apart for flotation of ore, wherein a transfer mechanism for transferring the flotated ore for reselection is provided between the flotation mechanisms; the flotation mechanism comprises seven flotation boxes connected in sequence, wherein the flotation boxes are provided with flotation components, a collection box for collecting foam is provided at the front side of the flotation boxes, a waste discharge pipe is provided at the lower position of the rear end of the flotation boxes, and a connecting component is provided between the flotation boxes.

[0006] Further configuration: the flotation mechanism includes a first flotation box, a second flotation box is provided on one side of the first flotation box, a third flotation box is provided on one side of the second flotation box, a fourth flotation box is provided on one side of the third flotation box, a fifth flotation box is provided on one side of the fourth flotation box, a sixth flotation box is provided on one side of the fifth flotation box, and a seventh flotation box is provided on one side of the sixth flotation box. Support frames are fixed on the seven flotation boxes. The flotation assembly includes a stirring shaft vertically arranged in each flotation box, a first motor is provided on the rear side of the stirring shaft, a transmission member for power transmission is provided on the output shaft of the first motor and the upper end of the stirring shaft, an impeller is provided at the lower position of the stirring shaft, a bubble scraping shaft is provided through the front side of each flotation box, a scraper is provided on the bubble scraping shaft located in each flotation box, and one end of the bubble scraping shaft is connected to a power source.

[0007] Further configuration: a first foam collection box is provided at the front end of the first flotation box, a second foam collection box is provided at the front end of the second flotation box and the third flotation box, a third foam collection box is provided at the front end of the fourth flotation box and the fifth flotation box, and a fourth foam collection box is provided at the front end of the sixth flotation box and the seventh flotation box. The transfer mechanism includes a first suction pump, a second suction pump and a third suction pump fixed on the support frame. The feed pipe of the first suction pump is inserted into the second foam collection box on the front side of the third flotation box, and the discharge pipe of the first suction pump is placed on the upper side of the first flotation box. The feed pipe of the second suction pump is inserted into the third foam collection box on the front side of the fifth flotation box, and the discharge pipe of the second suction pump is placed on the upper side of the second flotation box. The feed pipe of the third suction pump is inserted into the fourth foam collection box on the front side of the seventh flotation box, and the discharge pipe of the third suction pump is placed on the upper side of the third flotation box.

[0008] Further arrangement: connecting windows are opened through the adjacent wall panels of the flotation box, and the connecting components include hydraulic telescopic columns fixed on the support frame, the hydraulic telescopic columns are respectively arranged on the upper side of the wall panels of adjacent flotation boxes, and the lower ends of the hydraulic telescopic columns are connected to gate plates, and slide grooves are opened on the wall panels of the flotation box on the front and rear sides of the connecting windows.

[0009] It is further configured that the gate plate is slidably connected to the slide groove, and the height of the gate plate is greater than the height of the connecting window.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0011] Through the flotation boxes arranged at intervals in sequence, after the slurry passes through each flotation box for flotation, the foam minerals are scraped into the collection box at the front end, and the slurry flows into the next flotation box for flotation again. The foam minerals move to the flotation box on the front side through the transfer component until the last few flotation boxes are floated. If there is no foam mineral, it is directly discharged, which can realize the uninterrupted operation of multi-stage screening and improve the efficiency and quality of mineral screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0013] Figure 1 It is an axonometric diagram of a multi-stage screening device described in the utility model;

[0014] Figure 2 This is a schematic structural diagram from another perspective of a multi-stage screening device according to the present invention;

[0015] Figure 3This is a schematic diagram of the main structure of a multi-stage screening device described in the utility model;

[0016] Figure 4 This is a partially enlarged structural diagram of a multi-stage screening device described in the utility model;

[0017] Figure 5 It is a partial cross-sectional structural schematic diagram of a multi-stage screening device described in the utility model.

[0018] The following are the descriptions of the reference numerals:

[0019] 1. First flotation box; 11. Agitation shaft; 12. First motor; 13. Foam scraping shaft; 14. Scraper; 15. Second motor; 2. Second flotation box; 3. Third flotation box; 4. Fourth flotation box; 5. Fifth flotation box; 6. Sixth flotation box; 7. Seventh flotation box; 8. Support frame; 9. Waste discharge pipe; 101. First foam collection box; 102. Second foam collection box; 103. Third foam collection box; 104. Fourth foam collection box; 201. First suction pump; 202. Second suction pump; 203. Third suction pump; 301. Connecting window; 302. Chute; 303. Gate; 304. Hydraulic telescopic column. DETAILED DESCRIPTION

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0021] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] like Figure 1-Figure 5 As shown, a multi-stage screening equipment includes flotation mechanisms arranged in sequence and spaced apart for flotation of ore, and a transfer mechanism for transferring the flotated ore for re-selection is provided between the flotation mechanisms; the flotation mechanism includes seven flotation boxes connected in sequence, the flotation boxes are provided with flotation components, the front side of the flotation boxes is provided with a collection box for collecting foam, the rear end of the flotation boxes are provided with a waste pipe 9, and the flotation boxes are provided with a connecting component.

[0024] In this embodiment, the flotation mechanism includes a first flotation box 1, a second flotation box 2 is provided on one side of the first flotation box 1, a third flotation box 3 is provided on one side of the second flotation box 2, a fourth flotation box 4 is provided on one side of the third flotation box 3, a fifth flotation box 5 is provided on one side of the fourth flotation box 4, a sixth flotation box 6 is provided on one side of the fifth flotation box 5, a seventh flotation box 7 is provided on one side of the sixth flotation box 6, and a support frame 8 is fixed on the seven flotation boxes. The flotation assembly includes a stirring shaft 11 vertically arranged in each flotation box, a first motor 12 is provided on the rear side of the stirring shaft 11, and the stirring shaft 12 is provided on the output shaft of the first motor 12. A transmission part for power transmission is provided at the upper end of the shaft 11, an impeller is provided at the lower position of the stirring shaft 11, a bubble scraping shaft 13 is provided through the front side of each flotation box, a scraper 14 is provided on the bubble scraping shaft 13 and located in each flotation box, one end of the bubble scraping shaft 13 is connected to the second motor 15, the second motor 15 is fixed to the support frame 8, and the power is transmitted to the bubble scraping shaft 13 through the sprocket, and the stirring shaft 11 is driven to rotate by the first motor 12, so that the mineral material is suspended on the foam and floats on the upper side, and the second motor 15 drives the bubble scraping shaft 13 to rotate as a whole, so that the scraper 14 scrapes the foam into the corresponding collection boxes on the front side.

[0025] In this embodiment, a first foam collection box 101 is provided at the front end of the first flotation box 1, a second foam collection box 102 is provided at the front end of the second flotation box 2 and the third flotation box 3, a third foam collection box 103 is provided at the front end of the fourth flotation box 4 and the fifth flotation box 5, and a fourth foam collection box 104 is provided at the front end of the sixth flotation box 6 and the seventh flotation box 7. The transfer mechanism includes a first suction pump 201, a second suction pump 202 and a third suction pump 203 fixed to the support frame 8. The feed pipe of the first suction pump 201 is inserted into the second foam collection box 102 on the front side of the third flotation box 3, and the discharge pipe of the first suction pump 201 is placed in the first flotation box 1. On the upper side, the feed pipe of the second suction pump 202 is inserted into the third foam collection box 103 on the front side of the fifth flotation box 5, the discharge pipe of the second suction pump 202 is placed on the upper side of the second flotation box 2, the feed pipe of the third suction pump 203 is inserted into the fourth foam collection box 104 on the front side of the seventh flotation box 7, and the discharge pipe of the third suction pump 203 is placed on the upper side of the third flotation box 3. The foam minerals in the second foam collection box 102, the third foam collection box 103 or the fourth foam collection box 104 are transferred to the first flotation box 1, the second flotation box 2 or the third flotation box 3 through the first suction pump 201, the second suction pump 202 or the third suction pump 203.

[0026] A connecting window 301 is provided through the adjacent wall panels of the flotation box. The connecting component includes a hydraulic telescopic column 304 fixed on the support frame 8. The hydraulic telescopic column 304 is respectively arranged on the upper side of the wall panels of the adjacent flotation boxes. The lower end of the hydraulic telescopic column 304 is connected to a gate plate 303. The wall panels of the flotation box are provided with a slide groove 302 on the front and rear sides of the connecting window 301; the gate plate 303 is slidably connected to the slide groove 302, and the height of the gate plate 303 is greater than the height of the connecting window 301. The hydraulic telescopic column 304 pulls the gate plate 303 up and down to achieve connection or separation of adjacent flotation boxes.

[0027] The working principle and use process of the utility model are as follows: the ore pulp is put into the first flotation box 1, and the stirring shaft 11 is driven to rotate by the first motor 12, so that the ore material is suspended on the foam and floats on the upper side. The second motor 15 drives the foam scraping shaft 13 to rotate as a whole, so that the scraper 14 scrapes the foam into the first foam collection box 101, and then the hydraulic telescopic column 304 between the first flotation box 1 and the second flotation box 2 is contracted, pulling the gate 303 to move upward, so that the slurry enters the second flotation box 2 for flotation operation again, and then gradually passes through the third flotation box 3, the fourth flotation box 4, the fifth flotation box 5, the sixth flotation box 6 and the seventh flotation box 7 for flotation. At the same time, the first suction pump 201 is used to pump the foam in the second foam collection box 102. The flotation material is transported to the first flotation box 1, the second suction pump 202 transports the flotation material in the third foam collection box 103 to the second flotation box 2, and the third suction pump 203 transports the flotation material in the fourth foam collection box 104 to the third flotation box 3, so that the flotation material undergoes multiple flotation. For example, during the flotation process in the fifth flotation box 5, if there are no more foam minerals floating, the gate plate 303 between the fifth flotation box 5 and the sixth flotation box 6 does not need to be pulled upward, and the tailings can be directly discharged through the waste discharge pipe 9 on the rear side of the fifth flotation box 5. If there are foam minerals floating, the tailings continue to enter the sixth flotation box 6 for flotation operation until entering the seventh flotation box 7 and the flotation is completed, so that the flotation can achieve multi-stage uninterrupted continuous operation.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention as claimed.

Claims

1. A multi-stage screening device, characterized in that: The invention comprises flotation mechanisms for flotation of ore arranged in sequence and spaced apart, wherein a transfer mechanism for transferring the flotation ore for reselection is arranged between the flotation mechanisms; the flotation mechanism comprises seven flotation boxes connected in sequence, wherein the flotation boxes are provided with flotation components, a collection box for collecting foam is provided at the front side of the flotation boxes, a waste discharge pipe (9) is provided at the lower position of the rear end of the flotation boxes, and a connecting component is provided between the flotation boxes.

2. A multi-stage screening device according to claim 1, characterized in that: The flotation mechanism comprises a first flotation box (1), a second flotation box (2) is provided on one side of the first flotation box (1), a third flotation box (3) is provided on one side of the second flotation box (2), a fourth flotation box (4) is provided on one side of the third flotation box (3), a fifth flotation box (5) is provided on one side of the fourth flotation box (4), a sixth flotation box (6) is provided on one side of the fifth flotation box (5), a seventh flotation box (7) is provided on one side of the sixth flotation box (6), and a support frame (8) is fixed on the seven flotation boxes. The flotation assembly comprises a stirring shaft (11) vertically arranged in each flotation box, a first motor (12) is arranged on the rear side of the stirring shaft (11), a transmission member for power transmission is arranged on the output shaft of the first motor (12) and the upper end of the stirring shaft (11), an impeller is arranged at the lower position of the stirring shaft (11), a bubble scraping shaft (13) is arranged through the front side of each flotation box, a scraper (14) is arranged on the bubble scraping shaft (13) and located in each flotation box, and one end of the bubble scraping shaft (13) is connected to a power source.

3. A multi-stage screening device according to claim 2, characterized in that: The front end of the first flotation box (1) is provided with a first foam collection box (101), the front ends of the second flotation box (2) and the third flotation box (3) are provided with a second foam collection box (102), the front ends of the fourth flotation box (4) and the fifth flotation box (5) are provided with a third foam collection box (103), and the front ends of the sixth flotation box (6) and the seventh flotation box (7) are provided with a fourth foam collection box (104). The transfer mechanism comprises a first suction pump (201), a second suction pump (202) and a third suction pump (203) fixed on the support frame (8), and the feed pipe of the first suction pump (201) is inserted into the feed pipe. The first suction pump (201) is inserted into the second foam collection box (102) on the front side of the third flotation box (3), the discharge pipe of the first suction pump (201) is placed on the upper side of the first flotation box (1), the feed pipe of the second suction pump (202) is inserted into the third foam collection box (103) on the front side of the fifth flotation box (5), the discharge pipe of the second suction pump (202) is placed on the upper side of the second flotation box (2), the feed pipe of the third suction pump (203) is inserted into the fourth foam collection box (104) on the front side of the seventh flotation box (7), and the discharge pipe of the third suction pump (203) is placed on the upper side of the third flotation box (3).

4. The multi-stage screening device according to claim 3, characterized in that: A communication window (301) is provided through adjacent wall panels of the flotation box. The communication component comprises a hydraulic telescopic column (304) fixed to the support frame (8). The hydraulic telescopic column (304) is respectively arranged on the upper side of the wall panels adjacent to the flotation box. A gate plate (303) is connected to the lower end of the hydraulic telescopic column (304). Slide grooves (302) are provided on the wall panels of the flotation box at the front and rear sides of the communication window (301).

5. The multi-stage screening device according to claim 4, characterized in that: The gate plate (303) is slidably connected to the slide groove (302), and the height of the gate plate (303) is greater than the height of the communication window (301).

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