Dynamic separation device for discharged materials of ball mill for chemical fertilizer production

Abstract

A dynamic separation device for discharged materials of a ball mill for chemical fertilizer production comprises a separation device body, the separation device body comprises a separation barrel and a housing, separation holes are formed in the circumference of the separation barrel, the housing is installed outside the separation barrel, the two ends of the separation barrel extend out of the housing, and a slurry opening is formed in the bottom of the housing; and an air back-blowing device is arranged outside the separation cylinder. The ball mill rotates to drive the separation barrel to rotate, slurry is separated through the separation barrel, the separated slurry is discharged from the slurry discharging port, and small-particle ore is discharged to the conveying belt from the other end of the separation barrel, so that recycling can be facilitated; the mud and particles in the separation holes are reversely blown by compressed air, the dredging effect of the separation holes is better, and the device is simple in structure and free of quick-wear parts, and the maintenance workload cannot be increased.

Description

Technical Field

[0001] The utility model relates to the technical field of fertilizer production equipment, in particular to a ball mill discharge dynamic separation device for fertilizer production. Background Art

[0002] In the process of fertilizer production, it is necessary to put the phosphate ore crushed into large particles into a wet ball mill for grinding, and grind the phosphate ore into a slurry of suitable particle size. When the slurry is discharged from the discharge port 11 of the ball mill, a separation device will be set below the discharge port to filter the slurry, and then the small particles of ore separated by the separation device will be put into the ball mill again. The separation device currently used by our company is roughly the same as the ball mill discharge side screen structure disclosed in CN216704565U. Although this structure can filter and separate the slurry, the small particles of ore after filtration and separation remain in the filter screen and can only be raked out manually with tools, and the screen is also easy to clog, which is inconvenient to use.

[0003] The Chinese patent document CN216538753 discloses a ball mill with a discharge screen structure, which discloses filtering through a filter screen 6 and cleaning the filter screen 6 by rotating a cleaning brush 14, but its shortcomings are that, first, the small particles of ore in the filter screen 6 are not easy to be taken out from the discharge pipe 4; second, because the cleaning brush 14 is rotating, when the bristles are rotating, whether the bristles are nylon or steel wire, the bristles will be tilted and swept across the surface of the filter screen 6, and the filter screen has a certain thickness, so the cleaning effect of the blockage in the filter screen hole is poor; third, after using the cleaning brush 14 for a period of time, the cleaning brush 14, as a consumable part, needs to be stopped and replaced, which increases the maintenance workload. Based on the above reasons, the inventor designed a ball mill discharge dynamic separation device for fertilizer production. Utility Model Content

[0004] The technical problem to be solved by the utility model is: to solve the problems existing in the above-mentioned background technology, and to provide a dynamic separation device for ball mill discharge for fertilizer production, wherein one end of the separation cylinder is connected and fixed to the discharge port of the ball mill, and the rotation of the ball mill drives the separation cylinder to rotate, and the slurry is separated by the separation cylinder, and the separated slurry is discharged from the slurry discharge port, and the small particles of ore are discharged from the other end of the separation cylinder, so that it can be easily recovered and recycled, and an air backflush device is installed on the outside of the separation cylinder to perform compressed air backflush on the separation holes on the separation cylinder, so that the separation holes are better unblocked, and the device has a simple structure, no wearing parts, and will not increase the maintenance workload.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a dynamic separation device for ball mill discharge for fertilizer production, including a separation device body, the separation device body including a separation cylinder and a cover shell, the separation cylinder is provided with separation holes on the circumference, the cover shell is installed on the outside of the separation cylinder, both ends of the separation cylinder extend out of the cover shell, a slurry port is provided at the bottom of the cover shell, an air backflush device is installed in the cover shell and on the outside of the separation cylinder; in use, the separation cylinder is connected and fixed to the discharge port of the ball mill.

[0006] The air backflush device includes a main air pipe, a transverse pipe and an air nozzle. The main air pipe is connected to the transverse pipe. The transverse pipe is located in a housing and is axially arranged along the separation cylinder. The main air pipe passes through the housing. Multiple air nozzles are installed on the transverse pipe, and the air nozzles face the outer wall of the separation cylinder.

[0007] The air backflush device also includes a longitudinal pipe, a main air pipe is connected to the longitudinal pipe, and a plurality of transverse pipes are connected to the longitudinal pipe. The longitudinal pipe is an arc-shaped pipe adapted to the separation barrel.

[0008] A solenoid valve is installed at the air inlet end of the air back-blowing device.

[0009] The separation cylinder is a cylindrical structure with a uniform outer diameter, or a conical structure with one end connected to the discharge port being small and the other end being large, and spiral blades are installed inside the separation cylinder.

[0010] The outer walls of both ends of the separation cylinder located in the housing are respectively provided with blocking rings.

[0011] The cover shell comprises a lower shell and an upper shell, the slurry port is arranged at the bottom of the lower shell, and the lower shell and the upper shell are connected by flange plate bolts.

[0012] A flange is provided at one end of the separation cylinder, and the separation cylinder is connected to the discharge port via the flange.

[0013] The utility model has the following beneficial effects:

[0014] 1. The separation cylinder plays a filtering role. One end of the separation cylinder is connected and fixed to the discharge port of the ball mill. The rotation of the ball mill drives the separation cylinder to rotate. The slurry is separated by the separation cylinder and discharged from the slurry discharge port. Small particles of ore are discharged from the other end of the separation cylinder to the conveyor belt, so that it can be easily recycled. By installing an air backflush device on the outside of the separation cylinder, the mud and particles in the separation hole are backflushed with compressed air, and the separation hole is better unblocked. The device has a simple structure, no wearing parts, and will not increase the maintenance workload.

[0015] 2. A solenoid valve is installed at the air inlet end of the air back-blowing device, which controls the on and off of compressed air. When in use, the solenoid valve can be opened and closed in a pulsed manner to form an intermittent blow airflow and improve the back-blowing dredging effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the utility model in use state.

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.

[0019] Figure 3 for Figure 2 Schematic diagram of the BB section structure.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the air back-blowing device of the utility model.

[0021] In the figure:

[0022] Ball mill 10, discharge port 11, separation device body 20, separation cylinder 21, separation hole 211, spiral blade 212, baffle ring 213, flange 214, cover shell 22, slurry port 221, lower shell 222, upper shell 223, air backflush device 23, main air pipe 231, longitudinal pipe 232, transverse pipe 233, air nozzle 234, solenoid valve 235, conveyor belt 30. DETAILED DESCRIPTION

[0023] like Figure 1-4 As shown, a dynamic separation device for ball mill discharge for fertilizer production includes a separation device body 20, wherein the separation device body 20 includes a separation cylinder 21 and a cover shell 22, the separation cylinder 21 is provided with separation holes 211 on its circumference, the cover shell 22 is installed on the outside of the separation cylinder 21, both ends of the separation cylinder 21 extend out of the cover shell 22, a slurry port 221 is provided on the bottom of the cover shell 22, an air backflush device 23 is installed inside the cover shell 22 and on the outside of the separation cylinder 21; in use, the separation cylinder 21 is connected and fixed to the discharge port 11 of the ball mill 10. The separation cylinder 21 plays a filtering role. One end of the separation cylinder 21 is connected and fixed to the discharge port 11 of the ball mill 10. The rotation of the ball mill 10 drives the separation cylinder 21 to rotate. The slurry is separated by the separation cylinder 21, and the separated slurry is discharged from the slurry discharge port 221. The small particles of ore are discharged from the other end of the separation cylinder 21 to the conveyor belt 30, so that it can be easily recovered and recycled. By installing an air backflush device 23 on the outside of the separation cylinder 21, the mud and particles in the separation hole 211 are backflushed with compressed air, and the separation hole is better unblocked. The device has a simple structure, no wearing parts, and will not increase the maintenance workload.

[0024] Specifically, the air backflush device 23 includes a main air pipe 231, a transverse pipe 233 and an air nozzle 234. The main air pipe 231 is connected to the transverse pipe 233. The transverse pipe 233 is located in the cover shell 22 and is axially arranged along the separation cylinder 21. The main air pipe 231 passes through the cover shell 22. Multiple air nozzles 234 are installed on the transverse pipe 233. The air nozzles 234 face the outer wall of the separation cylinder 21, and the backflush and dredging of the separation cylinder 21 is achieved through the air nozzles.

[0025] Furthermore, the air backflush device 23 further includes a longitudinal tube 232, the main air pipe 231 is connected to the longitudinal tube 232, and a plurality of transverse tubes 233 are connected to the longitudinal tube 232, wherein the longitudinal tube 232 is an arc-shaped tube adapted to the separation cylinder 21. Figure 4 , multiple transverse tubes 233 are connected to the longitudinal tube 232, so that the air nozzles 234 form multiple rows, and the back-blowing dredging effect is better. Specifically, 3-5 transverse tubes 233 are provided, and the air nozzles 234 on each transverse tube 233 are arranged in a staggered manner.

[0026] Furthermore, an electromagnetic valve 235 is installed at the air inlet end of the air back-blowing device 23, and the on-off of the compressed air is controlled by the electromagnetic valve 235. When in use, the electromagnetic valve 235 can be opened and closed in a pulsed manner to form an intermittent impact airflow, thereby improving the back-blowing dredging effect.

[0027] Preferably, the air nozzle 234 is a comb-shaped air nozzle.

[0028] For details, see Figure 2 The separation cylinder 21 is a cylindrical structure with a uniform outer diameter, or a conical structure with a small end connected to the discharge port 11 and a large end. A spiral blade 212 is installed inside the separation cylinder 21. By setting the spiral blade 212, the small particles of ore in the separation cylinder 21 can be discharged smoothly. Specifically, the spiral blade 212 is a continuous spiral steel plate.

[0029] See also Figure 2 The separation cylinder 21 is provided with retaining rings 213 on the outer walls at both ends of the housing 22 to prevent the separated slurry from flowing out from both ends along the outer walls of the separation cylinder 21.

[0030] See also Figure 1 In order to facilitate inspection and maintenance, the cover shell 22 includes a lower shell 222 and an upper shell 223, the slurry port 221 is arranged at the bottom of the lower shell 222, and the lower shell 222 and the upper shell 223 are connected by flange plate bolts.

[0031] See also Figure 1 , 2 A flange 214 is provided at one end of the separation cylinder 21 , and the separation cylinder 21 is connected to the discharge port 11 via the flange 214 .

[0032] The action process or principle of the utility model is as follows:

[0033] When in use, one end of the separation cylinder 21 is connected and fixed to the discharge port 11 of the ball mill 10 , and the main air pipe 231 of the air backflush device 23 is connected to the compressed air source, and the main air pipe 231 is installed with a solenoid valve 235 .

[0034] The rotation of the ball mill 10 drives the separation drum 21 to rotate, and the slurry is separated by the separation drum 21. The separated slurry flows into the cover shell 22 and is discharged from the slurry outlet 221 to the slurry tank below.

[0035] The small particles of ore are discharged from the other end of the separation cylinder 21 onto the conveyor belt 30 so as to be fed into the feed port of the ball mill 10, thereby being conveniently recovered and recycled.

[0036] An air backflush device 23 is installed outside the separation cylinder 21 , and the electromagnetic valve 235 is opened and closed in a pulsed manner to form an intermittent impact airflow to backflush and dredge the mud and particles in the separation hole 211 .

Claims

1. A ball mill discharge dynamic separation device for fertilizer production, comprising a separation device body (20), characterized in that: The separation device body (20) comprises a separation cylinder (21) and a cover shell (22); the separation cylinder (21) is provided with separation holes (211) on its circumference; the cover shell (22) is installed outside the separation cylinder (21); both ends of the separation cylinder (21) extend out of the cover shell (22); a slurry port (221) is provided at the bottom of the cover shell (22); an air backflush device (23) is installed inside the cover shell (22) and outside the separation cylinder (21); in a use state, the separation cylinder (21) is connected and fixed to a discharge port (11) of a ball mill (10).

2. A ball mill discharging dynamic separation device for fertilizer production according to claim 1, characterized in that: The air backflush device (23) comprises a main air pipe (231), a transverse pipe (233) and an air nozzle (234); the main air pipe (231) is connected to the transverse pipe (233); the transverse pipe (233) is located in the housing (22) and is arranged along the axial direction of the separation cylinder (21); the main air pipe (231) passes through the housing (22); a plurality of air nozzles (234) are installed on the transverse pipe (233), and the air nozzles (234) face the outer wall of the separation cylinder (21).

3. A ball mill discharging dynamic separation device for fertilizer production according to claim 2, characterized in that: The air backflush device (23) further comprises a longitudinal tube (232), the main air pipe (231) being connected to the longitudinal tube (232), and a plurality of transverse tubes (233) being connected to the longitudinal tube (232), wherein the longitudinal tube (232) is in an arc shape adapted to the separation cylinder (21).

4. A ball mill discharge dynamic separation device for fertilizer production according to any one of claims 1 to 3, characterized in that: A solenoid valve (235) is installed at the air inlet end of the air backflush device (23).

5. The ball mill discharging dynamic separation device for fertilizer production according to claim 1, characterized in that: The separation cylinder (21) is a cylindrical structure with a uniform outer diameter, or a conical structure with one end connected to the discharge port (11) being small and the other end being large. A spiral blade (212) is installed inside the separation cylinder (21).

6. A ball mill discharge dynamic separation device for fertilizer production according to claim 1 or 5, characterized in that: The separation cylinder (21) is provided with material blocking rings (213) respectively installed on the outer walls at both ends located inside the cover (22).

7. A ball mill discharge dynamic separation device for fertilizer production according to claim 1, characterized in that: The cover shell (22) comprises a lower shell (222) and an upper shell (223); the slurry port (221) is arranged at the bottom of the lower shell (222); the lower shell (222) and the upper shell (223) are connected by flange plate bolts.

8. The ball mill discharging dynamic separation device for fertilizer production according to claim 1, characterized in that: A flange (214) is provided at one end of the separation cylinder (21), and the separation cylinder (21) is connected to the discharge port (11) via the flange (214).

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