Horizontal centrifugal concentrator and method thereof

Abstract

According to the horizontal centrifugal concentrator and the method thereof, a discharging pipe is arranged at the lower end of a blocking cover, a conveying pipe is rotationally arranged at the front end of the blocking cover and can be inserted into a rotary drum, a plurality of discharging holes located in the rotary drum are formed in the rear end of the conveying pipe, a gear ring located in front of the blocking cover is arranged on the peripheral side of the conveying pipe, and the discharging holes are communicated with the gear ring. When ore pulp circulates in the barrel, the third motor is started, the stirring rods can rotate, the multiple stirring rods can provide a mixing effect for the ore pulp in the barrel, the number of the stirring assemblies is not forcibly regulated, the ore pulp can be mixed more evenly when entering the rotary drum, and in the feeding process of the ore pulp, the feeding efficiency of the ore pulp is greatly improved. The slurry can be uniformly dispersed, so that the slurry can uniformly enter the rotary drum, and the stability and the separation effect of the structure during use can be further ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of ore dressing machines, in particular to a horizontal centrifugal ore dressing machine and a method thereof. Background Art

[0002] Horizontal centrifugal concentrator is an important ore sorting equipment. The slurry is fed into the inner wall of the drum from the feeder through the feed nozzle at two points. As the drum rotates at high speed, under the action of centrifugal force, heavy minerals are deposited on the inner wall of the drum and rotate with the drum. Light ore particles rotate with the drum at a certain differential speed and flow along the slope of the drum from the feed end to the discharge end in a spiral flow to discharge tailings. After a certain separation time, the feeder automatically turns to the concentrate discharge position to stop feeding. After the tailings are discharged, the discharger is ready to intercept the concentrate, and the high-pressure flushing water valve automatically opens to flush the concentrate, and all components are reset to start the next separation cycle;

[0003] The existing Yunnan Tin centrifugal concentrator feeds the slurry into a horizontal drum. When the drum rotates, the concentrate adheres to the inner wall of the drum under the action of inertial centrifugal force, and the tailings and water are thrown out from the large end of the drum. When the material is fed, most of the slurry enters the drum directly, which makes it difficult to achieve uniform dispersion. As a result, the material cannot enter the drum evenly, which will cause impact and uneven distribution when entering the drum, affecting the stability and separation effect of the centrifuge. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a horizontal centrifugal concentrator and a method thereof.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a horizontal centrifugal ore concentrator, comprising a frame, a shell is provided on the frame, a baffle is provided at the front end of the shell, a drum is provided inside the shell, a first motor is provided at the rear end of the frame, a first transmission shaft connected to the drum is provided at the output end of the first motor, a discharge pipe is provided at the lower end of the baffle, a feed pipe is rotatably provided at the front end of the baffle, and the feed pipe can be inserted into the drum, and a plurality of discharge holes located inside the drum are provided at the rear end of the feed pipe, a gear ring located in front of the baffle is provided on the circumferential side of the feed pipe, and a fourth motor is fixedly provided at the front end of the baffle, and a gear disc meshing with the gear ring is provided at the output end of the fourth motor;

[0008] A feed pipe is provided in front of the delivery pipe, a barrel is fixedly arranged between the feed pipe and the delivery pipe, a transfer seat is provided at the front end of the barrel to be docked with the rear end of the feed pipe, and the feed pipe is rotatably connected with the transfer seat, the feed pipe is fixed in front of the baffle through a support rod, a plurality of stirring assemblies are provided on the barrel, the stirring assembly includes a third motor and a stirring rod, the third motor is fixed on the outer wall of the barrel, the stirring rod is located inside the barrel, and a second transmission shaft that penetrates the barrel and is connected to the stirring rod is provided at the output end of the third motor;

[0009] A first valve is provided at the front end of the feed pipe, a water inlet pipe is provided above the feed pipe, the junction between the water inlet pipe and the feed pipe is located at the rear side of the first valve, and a second valve is provided on the water inlet pipe.

[0010] In order to facilitate assembly of the cylinder, the present invention has the following improvements: two first docking flanges are symmetrically arranged at both ends of the cylinder, a second docking flange is arranged at the front end of the feed pipe and the rear end of the adapter, and the first docking flange and the second docking flange are docked with bolts.

[0011] Furthermore, an improvement of the present invention is that both the first valve and the second valve are solenoid valves.

[0012] Furthermore, the present invention is improved in that two support rods are symmetrically arranged at the portion of the material conveying pipe located at the blocking cover, and the support rods are provided with scraping rods contacting the inner wall of the blocking cover.

[0013] In order to make the present structure smoother when discharging materials, the improvements of the present invention are that a support plate is provided inside the discharge pipe, a box body is provided at the lower end of the support plate, a clearing screw penetrating the discharge pipe is rotatably provided in the middle part of the support plate, a driven gear block located inside the box body is provided at the bottom end of the clearing screw, a second motor is provided at the bottom of the frame, a rotating shaft penetrating the discharge pipe is provided at the output end of the second motor, and a driving gear block located inside the box body and cooperating with the driven gear block is provided at one end of the rotating shaft.

[0014] Furthermore, an improvement of the present invention is that the first motor, the second motor, the third motor and the fourth motor are all servo motors.

[0015] A method for using a horizontal centrifugal concentrator as claimed in any one of claims 1 to 6, comprising the following steps:

[0016] Step 1: Open the first valve, close the second valve, and the slurry enters the drum through the feed pipe, the cylinder and the conveying pipe;

[0017] Step 2: The slurry will be mixed evenly after passing through the cylinder;

[0018] Step 3: Start the first motor, and the drum rotates in the shell;

[0019] Step 4: Under the action of inertial centrifugal force, the concentrate will adhere to the inner wall of the drum, and the tailings and water will enter the baffle cover and then be discharged at the discharge pipe;

[0020] Step 5: Open the second valve and close the first valve. The flushing liquid will enter the feed pipe through the water inlet pipe, and then enter the conveying pipe to flush the concentrate attached to the inner wall of the drum;

[0021] Step 6: The washed concentrate will be discharged from the discharge pipe along with the washing liquid.

[0022] Further, the present invention has the following improvements: when the ore pulp flows in the cylinder, the third motor is started to rotate the stirring rod, and the plurality of stirring rods can provide a mixing effect for the ore pulp in the cylinder;

[0023] When this structure is in the process of discharging materials, the second motor is started to make the rotating shaft drive the driving gear block to rotate. Through the action of meshing, the driving gear block drives the driven gear block and the dredging screw to rotate in the discharging pipe, providing a dredging effect for the materials in the discharging pipe.

[0024] (III) Beneficial effects

[0025] Compared with the prior art, the present invention provides a horizontal centrifugal concentrator and method thereof, which have the following beneficial effects:

[0026] Starting the fourth motor can make the toothed disc drive the toothed ring to rotate through meshing, thereby making the conveying pipe rotate in the middle part of the blocking cover, making the multiple discharge holes rotate in the drum, so that the slurry can enter the drum evenly at multiple positions;

[0027] When the slurry flows in the cylinder, the third motor is started to rotate the stirring rod. The multiple stirring rods can provide a mixing effect for the slurry in the cylinder, and there is no mandatory requirement for the number of stirring components. The slurry can be mixed more evenly when entering the drum. During the feeding process, the slurry can be evenly dispersed so that the slurry can evenly enter the drum, thereby ensuring the stability and separation effect of the structure when in use.

[0028] When this structure is in the process of discharging, the second motor is started to make the rotating shaft drive the driving gear block to rotate. Through the action of meshing, the driving gear block drives the driven gear block and the dredging screw to rotate in the discharging pipe, providing a dredging effect for the material in the discharging pipe, so that the material liquid will not be blocked and accumulated in the discharging pipe, avoiding the phenomenon of backflow of the material liquid in the discharging pipe, and making the material liquid more stable during the discharging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0030] Figure 2 For the present invention Figure 1 The main view;

[0031] Figure 3 It is a schematic diagram of the internal structure of the cylinder in the present invention;

[0032] Figure 4 It is a schematic diagram of the internal structure of the blocking cover in the present invention;

[0033] Figure 5 Schematic diagram of the internal structure of the discharge pipe in the present invention;

[0034] In the figure: 1. frame; 2. shell; 3. first motor; 4. drum; 5. baffle; 6. discharge pipe; 7. second motor; 8. rotating shaft; 9. support plate; 10. box; 11. driving gear block; 12. driven gear block; 13. unblocking screw; 14. conveying pipe; 15. cylinder; 16. feed pipe; 17. adapter; 18. first valve; 19. water inlet pipe; 20. second valve; 21. third motor; 22. stirring rod; 23. gear ring; 24. fourth motor; 25. gear disc; 26. support rod; 27. scraper rod; 28. discharge hole. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1-5 A horizontal centrifugal ore concentrator of the present invention comprises a frame 1, a shell 2 is provided on the frame 1, a baffle 5 is provided at the front end of the shell 2, a drum 4 is provided inside the shell 2, a first motor 3 is provided at the rear end of the frame 1, a first transmission shaft connected to the drum 4 is provided at the output end of the first motor 3, a discharge pipe 6 is provided at the lower end of the baffle 5, a feed pipe 14 is rotatably provided at the front end of the baffle 5, and the feed pipe 14 can be inserted into the drum 4, and a plurality of discharge holes 28 located inside the drum 4 are provided at the rear end of the feed pipe 14, a gear ring 23 located in front of the baffle 5 is provided on the circumferential side of the feed pipe 14, and a fourth motor 24 is fixedly provided at the front end of the baffle 5, and a gear disc 25 meshing with the gear ring 23 is provided at the output end of the fourth motor 24;

[0037] A feed pipe 16 is provided in front of the delivery pipe 14, a barrel 15 is fixedly arranged between the feed pipe 16 and the delivery pipe 14, a transfer seat 17 is provided at the front end of the barrel 15 to dock with the rear end of the feed pipe 16, and the feed pipe 16 is rotatably connected to the transfer seat 17, the feed pipe 16 is fixed in front of the baffle 5 through a support rod, a plurality of stirring components are provided on the barrel 15, the stirring components include a third motor 21 and a stirring rod 22, the third motor 21 is fixed on the outer wall of the barrel 15, the stirring rod 22 is located inside the barrel 15, and the output end of the third motor 21 is provided with a second transmission shaft that penetrates the barrel 15 and is connected to the stirring rod 22;

[0038] A first valve 18 is provided at the front end of the feed pipe 16 , a water inlet pipe 19 is provided above the feed pipe 16 , the junction between the water inlet pipe 19 and the feed pipe 16 is located at the rear side of the first valve 18 , and a second valve 20 is provided on the water inlet pipe 19 .

[0039] In this embodiment, two first docking flanges are symmetrically arranged at both ends of the cylinder 15, and a second docking flange is arranged at the front end of the feed pipe 14 and the rear end of the adapter 17. The first docking flange and the second docking flange are docked with bolts, and the flange docking method can facilitate the assembly of the cylinder 15 between the feed pipe 14 and the adapter 17.

[0040] In this embodiment, both the first valve 18 and the second valve 20 can be solenoid valves, which have the advantages of high precision and convenient operation.

[0041] In this embodiment, two support rods 26 are symmetrically arranged at the part of the conveying pipe 14 located at the baffle cover 5, and a scraper rod 27 contacting the inner wall of the baffle cover 5 is provided on the support rod 26. When the conveying pipe 14 rotates, the support rod 26 can drive the scraper rod 27 to rotate on the inner wall of the baffle cover 5, which can provide a scraping effect on the inner wall of the baffle cover 5, making it difficult for materials to adhere to the inner wall of the baffle cover 5.

[0042] In this embodiment, a support plate 9 is provided inside the discharge pipe 6, and a box body 10 is provided at the lower end of the support plate 9. A clearing screw 13 penetrating the discharge pipe 6 is rotatably provided in the middle part of the support plate 9, and a driven gear block 12 located inside the box body 10 is provided at the bottom end of the clearing screw 13. A second motor 7 is provided at the bottom of the frame 1, and a rotating shaft 8 penetrating the discharge pipe 6 is provided at the output end of the second motor 7. A driving gear block 11 located inside the box body 10 and cooperating with the driven gear block 12 is provided at one end of the rotating shaft 8, which can make the present structure smoother when discharging.

[0043] In the present embodiment, the first motor 3 , the second motor 7 , the third motor 21 and the fourth motor 24 are all servo motors, which have the advantages of strong stability and good controllability.

[0044] A method for using a horizontal centrifugal concentrator as claimed in any one of claims 1 to 6, comprising the following steps:

[0045] Step 1: Open the first valve 18 and close the second valve 20. The slurry enters the drum 4 through the feed pipe 16, the cylinder 15 and the delivery pipe 14, and then sprays out at the multiple discharge holes 28. At this time, the fourth motor 24 is started, so that the gear disc 25 drives the gear ring 23 to rotate through the meshing effect, and then the delivery pipe 14 can rotate in the middle part of the stop cover 5, and the multiple discharge holes 28 can rotate in the drum 4, so that the slurry can enter the drum 4 evenly at multiple positions.

[0046] Step 2: The slurry will be mixed evenly after passing through the cylinder 15. When the slurry flows in the cylinder 15, the third motor 21 is started to rotate the stirring rod 22. The plurality of stirring rods 22 can provide a mixing effect for the slurry in the cylinder 15, and the number of stirring components is not mandatory here. The slurry can be mixed more evenly when entering the drum 4. During the feeding process, the slurry can be evenly dispersed, so that the slurry can be evenly entered into the drum 4, thereby ensuring the stability and separation effect of the structure when in use;

[0047] Step 3: Start the first motor 3, and the drum 4 rotates in the housing 2;

[0048] Step 4: Under the action of inertial centrifugal force, the concentrate will adhere to the inner wall of the drum 4, and the tailings and water will enter the retaining cover 5 and then be discharged at the discharge pipe 6;

[0049] Step 5: When it is necessary to collect the concentrate, open the second valve 20, close the first valve 18, stop feeding the slurry, and then allow the flushing liquid to enter the feed pipe 16 through the water inlet pipe 19, and then enter the conveying pipe 14, and finally spray to the inner wall of the drum 4 at multiple discharge holes 28. There is no mandatory requirement for the inner diameter of the discharge hole 28, and the concentrate attached to the inner wall of the drum 4 is flushed;

[0050] Step 6: The washed concentrate will be discharged from the discharge pipe 6 along with the washing liquid;

[0051] When the present structure is in the process of discharging, the second motor 7 is started to make the rotating shaft 8 drive the driving gear block 11 to rotate. Through the meshing effect, the driving gear block 11 drives the driven gear block 12 and the dredging screw 13 to rotate in the discharging pipe 6, providing a dredging effect for the material in the discharging pipe 6, so that the material liquid will not be blocked and accumulated in the discharging pipe 6, and the backflow of the material liquid in the discharging pipe 6 can be avoided, which can make the material liquid more stable during the discharging process. Here, the rotation connection mode between the adapter 17 and the feeding pipe 16 can be realized by a sealing bearing or a shaft seal and other structures.

[0052] In the description of this article, it should be noted that relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0053] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A horizontal centrifugal concentrator, comprising a frame (1), a shell (2) being provided on the frame (1), a baffle (5) being provided at the front end of the shell (2), a rotating drum (4) being provided inside the shell (2), a first motor (3) being provided at the rear end of the frame (1), a first transmission shaft connected to the rotating drum (4) being provided at the output end of the first motor (3), and characterized in that: A discharge pipe (6) is provided at the lower end of the blocking cover (5); a feed pipe (14) is rotatably provided at the front end of the blocking cover (5), and the feed pipe (14) can be inserted into the interior of the rotating drum (4); a plurality of discharge holes (28) located inside the rotating drum (4) are provided at the rear end of the feed pipe (14); a gear ring (23) located in front of the blocking cover (5) is provided on the circumferential side of the feed pipe (14); a fourth motor (24) is fixedly provided at the front end of the blocking cover (5); and a gear disc (25) meshing with the gear ring (23) is provided at the output end of the fourth motor (24); A feed pipe (16) is provided in front of the conveying pipe (14); a barrel (15) is fixedly arranged between the feed pipe (16) and the conveying pipe (14); a transfer seat (17) is provided at the front end of the barrel (15) and is connected to the rear end of the feed pipe (16); and the feed pipe (16) and the transfer seat (17) are rotatably connected; the feed pipe (16) is fixed in front of the baffle (5) through a support rod; a plurality of stirring components are provided on the barrel (15); the stirring components include a third motor (21) and a stirring rod (22); the third motor (21) is fixed on the outer wall of the barrel (15); the stirring rod (22) is located inside the barrel (15); and the output end of the third motor (21) is provided with a second transmission shaft that penetrates the barrel (15) and is connected to the stirring rod (22); A first valve (18) is provided at the front end of the feed pipe (16), a water inlet pipe (19) is provided above the feed pipe (16), a junction between the water inlet pipe (19) and the feed pipe (16) is located at the rear side of the first valve (18), and a second valve (20) is provided on the water inlet pipe (19).

2. A horizontal centrifugal concentrator according to claim 1, characterized in that: Two first docking flanges are symmetrically arranged at both ends of the cylinder (15), and a second docking flange is arranged at the front end of the material conveying pipe (14) and the rear end of the adapter seat (17), and the first docking flange and the second docking flange are docked with each other via bolts.

3. A horizontal centrifugal concentrator according to claim 2, characterized in that: The first valve (18) and the second valve (20) are both solenoid valves.

4. A horizontal centrifugal concentrator according to claim 3, characterized in that: Two support rods (26) are symmetrically arranged at the portion of the material conveying pipe (14) located at the blocking cover (5), and a scraping rod (27) contacting the inner wall of the blocking cover (5) is arranged on the support rod (26).

5. A horizontal centrifugal concentrator according to claim 4, characterized in that: A support plate (9) is provided inside the discharge pipe (6), a box body (10) is provided at the lower end of the support plate (9), a dredging screw (13) penetrating the discharge pipe (6) is rotatably provided in the middle part of the support plate (9), a driven gear block (12) located inside the box body (10) is provided at the bottom end of the dredging screw (13), a second motor (7) is provided at the bottom of the frame (1), a rotating shaft (8) penetrating the discharge pipe (6) is provided at the output end of the second motor (7), and a driving gear block (11) located inside the box body (10) and cooperating with the driven gear block (12) is provided at one end of the rotating shaft (8).

6. A horizontal centrifugal concentrator according to claim 5, characterized in that: The first motor (3), the second motor (7), the third motor (21) and the fourth motor (24) are all servo motors.

7. A method for using a horizontal centrifugal concentrator according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: Open the first valve (18), close the second valve (20), and the slurry enters the drum (4) through the feed pipe (16), the cylinder (15) and the conveying pipe (14); Step 2: The slurry is mixed evenly after passing through the cylinder (15); Step 3: Start the first motor (3), and the drum (4) rotates in the housing (2); Step 4: Under the action of inertial centrifugal force, the concentrate will adhere to the inner wall of the drum (4), and the tailings and water will enter the retaining cover (5) and then be discharged at the discharge pipe (6); Step 5: Open the second valve (20) and close the first valve (18), and the flushing liquid will enter the feed pipe (16) through the water inlet pipe (19), and then enter the conveying pipe (14) to flush the concentrate attached to the inner wall of the drum (4); Step 6: The washed concentrate is discharged from the discharge pipe (6) along with the washing liquid.

8. The method for using a horizontal centrifugal concentrator according to claim 7, characterized in that: When the ore pulp flows in the cylinder (15), the third motor (21) is started to rotate the stirring rod (22), and the plurality of stirring rods (22) can provide a mixing effect for the ore pulp in the cylinder (15); When the structure is in the process of discharging materials, the second motor (7) is started, so that the rotating shaft (8) drives the driving gear block (11) to rotate. Through the action of meshing, the driving gear block (11) drives the driven gear block (12) and the dredging screw (13) to rotate in the discharging pipe (6), thereby providing a dredging effect for the materials in the discharging pipe (6).

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