Ore pulp coarse particle screening device for phosphorite

Abstract

The invention relates to a filtering device, and provides an ore pulp coarse particle screening device for phosphorite, which comprises a separating device and a slurry pipe connected with the separating device, the separating device comprises a bracket, a tank body arranged on the bracket, a slurry discharging opening formed in the lower side wall of the tank body, a feeding pipe arranged in the tank body in a penetrating manner, a filter screen arranged in the tank body and arranged on the outer wall of the feeding pipe in a sleeving manner, a traction pipe connected with one end of the filter screen, and a first driving device used for driving the traction pipe to move in the axial direction; the baffle is arranged at one end, far away from the traction pipe, in the feeding pipe; the second driving device is used for driving the tank body to rotate; the slurry pipe is communicated with one end, which is arranged outside the tank body, of the feeding pipe; one end of the filter screen away from the traction pipe is connected with the outer wall of the feeding pipe. According to the ore pulp coarse particle screening device for phosphorite, large particles in phosphorite ore pulp can be efficiently separated out.

Description

Technical Field

[0001] The present invention relates to the technical field of filtering devices, and more particularly, to a slurry coarse particle screening device for phosphate rock. Background Art

[0002] After many ores such as phosphate rock are mined, before they are finely processed, they need to be crushed and ground into particles and powders finer than a certain size. For some phosphate rocks that already contain a high amount of water, the efficiency of crushing and grinding the phosphate rock in a semi-dry and semi-wet state is very low. Therefore, a certain amount of water is usually added to the phosphate rock for wet grinding.

[0003] The concentration of the slurry after wet grinding is very high, and it has a certain fluidity, but is much lower than that of water. However, there are still a large number of coarse particles in the slurry, and the coarse particles need to be ground a second time to meet the corresponding standards before subsequent processing can be carried out.

[0004] However, due to the high concentration of the slurry and the relatively small size of the particles to be filtered (usually less than 3 mm), it is very easy to clog the filtering device during filtration. After a certain amount of filtration, the filtering device needs to be cleaned, otherwise it will easily become clogged. Common filtering devices with backwashing functions will mix a large amount of water during the flushing process, increasing the burden on subsequent processing. Therefore, designing a slurry separation device that can efficiently filter and automatically clean can effectively improve production efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a slurry coarse particle screening device for phosphate rock, which can efficiently separate large particles from the phosphate rock slurry.

[0006] The embodiments of the present invention are achieved through the following technical solutions: The slurry coarse particle screening device for phosphate rock of the present invention includes a separation device and a slurry pipe connected to the separation device; the separation device includes a bracket, a tank body provided on the bracket, a slurry discharge port opened on the lower side wall of the tank body, a feed pipe passing through the tank body, a filter net provided in the tank body and sleeved on the outer wall of the feed pipe, a traction pipe connected to one end of the filter net, a first driving device for driving the traction pipe to move axially, a baffle provided at the end of the feed pipe away from the traction pipe inside the feed pipe, and a second driving device for driving the tank body to rotate; the filter net is spherical, and the slurry pipe is communicated with the end of the feed pipe outside the tank body; the end of the filter net away from the traction pipe is connected to the outer wall of the feed pipe, a feed port is opened on the side wall of the part of the feed pipe provided in the tank body, and the traction pipe is provided between the feed pipe and the tank body.

[0007] Further, one end of the traction pipe arranged outside the tank body is provided with an annular clamping plate; the first driving device includes a push plate sleeved outside the clamping plate, a clamping groove opened on the inner side of the push plate, and a telescopic cylinder connected to the push plate; the clamping plate is clamped in the clamping groove.

[0008] Further, a push rod is arranged inside the feed pipe, one end of the push rod is connected to the baffle plate, and the other end passes through the end wall of the feed pipe and is connected to the push plate through a connecting rod.

[0009] Further, the outer wall of the part of the feed pipe arranged inside the traction pipe is provided with a spiral chute, and the inner wall of the traction pipe is provided with a sliding block, and the sliding block is slidably arranged in the chute.

[0010] Further, a guide rod is arranged inside the feed pipe, and the guide rod is fixedly connected to the inner wall of the feed pipe through a fixing rod; the push rod is of a hollow structure, and the guide rod is arranged inside the push rod.

[0011] Further, the telescopic cylinder is one of a pneumatic type, a hydraulic type or an electric type.

[0012] Further, a pair of telescopic cylinders are provided, and the pair of telescopic cylinders are both arranged on opposite sides of the tank body.

[0013] Further, a discharge pipe is connected to one end of the feed pipe away from the slurry pipe, and the discharge pipe is a flexible pipe.

[0014] Further, the second driving device includes a rotating shaft connected to the outer wall of the tank body, a motor, and a transmission belt for connecting the motor and the rotating shaft; the motor is arranged on the bracket.

[0015] Further, a pair of separation devices are provided, and the slurry pipe is simultaneously communicated with the pair of separation devices; a three-way valve is arranged on the slurry pipe; the slurry pipe is a flexible pipe.

[0016] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects: the slurry coarse particle screening device for phosphate ore of the present invention, when in use, pumps the slurry into the feed pipe through the slurry pipe (at this time the tank body and the feed pipe are kept horizontal), and then the feed port on the slurry barrel feed pipe enters the interior of the filter screen, and after the filter screen is stretched open, the slurry overflows from the gap of the filter screen and is discharged from the slurry discharge port on the lower side of the tank body, while large particles of impurities remain in the filter screen. When the large particles in the filter screen need to be cleaned after a certain period of time, the pumping of the slurry can be stopped. The first drive device is used to drive the traction tube to move. The traction tube pulls the filter screen during the movement, so that the filter screen is gradually pulled from a sphere (or ellipsoid) to a tube, so that the large particles inside are squeezed into the feed tube through the feed port, and then the second drive device drives the tank body to rotate as a whole, so that the feed tube becomes vertical, the baffle is removed, and the large particles can be discharged through the feed tube, and then the baffle is blocked again, and the second drive device is used to readjust the tank body to a horizontal position, and the first drive device pushes the traction tube back to its original position, and the filtration can be restarted. In this way, the entire device not only has a more efficient filtration efficiency, but also can automatically clean the filter cloth efficiently, with higher overall operating efficiency and a higher degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic diagram of the structure of a slurry coarse particle screening device for phosphate ore provided in an embodiment of the present invention;

[0019] Figure 2 A schematic diagram of the structure inside the tank provided by an embodiment of the present invention;

[0020] Figure 3 A schematic diagram of the structure of the filter screen part provided by an embodiment of the present invention;

[0021] Figure 4 A schematic diagram of the structure of a slurry discharge port provided in an embodiment of the present invention;

[0022] Figure 5 A schematic diagram of the structure of a push rod part provided by an embodiment of the present invention;

[0023] Figure 6 A schematic diagram of the structure of a chute portion provided by an embodiment of the present invention;

[0024] Figure 7Structural schematic diagram of the push plate part provided by the embodiment of the present invention.

[0025] Icons: 11 - bracket, 12 - motor, 13 - transmission belt, 14 - rotating shaft, 21 - tank body, 22 - slurry discharge port, 23 - feed pipe, 24 - filter screen, 25 - traction pipe, 26 - clamping plate, 27 - push plate, 28 - telescopic cylinder, 29 - connecting rod, 210 - push rod, 211 - sliding groove, 212 - baffle plate, 213 - feed port, 31 - slurry pipe, 32 - three-way valve. Detailed implementation manners

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. Generally, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0028] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0029] In the description of the present invention, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the product of this application is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0030] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0031] Embodiment

[0032] The following is further described in conjunction with specific embodiments. As shown in the attached Figure 1 - attached Figure 7As shown, the slurry coarse particle screening device for phosphate ore of this embodiment includes a separation device and a slurry pipe 31 connected to the separation device; the separation device includes a bracket 11, a tank body 21 arranged on the bracket 11, a slurry discharge port 22 opened on the lower side wall of the tank body 21, a feed pipe 23 passing through the tank body 21, a filter screen 24 arranged in the tank body 21 and sleeved on the outer wall of the feed pipe 23, and a traction pipe 25 connected to one end of the filter screen 24, which is used to drive the traction pipe 25 to move axially The first driving device is a baffle 212 arranged inside the feed pipe 23 away from the end of the traction pipe 25, and a second driving device for driving the tank body 21 to rotate; the filter screen 24 is spherical, and the slurry pipe 31 is connected to the end of the feed pipe 23 arranged outside the tank body 21; the end of the filter screen 24 away from the traction pipe 25 is connected to the outer wall of the feed pipe 23, and the side wall of the part of the feed pipe 23 arranged in the tank body 21 is provided with a feed port 213, and the traction pipe 25 is arranged between the feed pipe 23 and the tank body 21. Specifically, the openings at both ends of the tank body 21 are narrow. When in use, the slurry is pumped into the feed pipe 23 through the slurry pipe 31 (at this time, the tank body 21 and the feed pipe 23 are kept horizontal), and then the feed port 213 on the slurry barrel feed pipe 23 enters the interior of the filter screen 24, and after the filter screen 24 is stretched open, it overflows from the gap of the filter screen 24 and is discharged from the slurry discharge port 22 on the lower side of the tank body 21, while large particles of impurities remain in the filter screen 24. When the large particles in the filter screen 24 need to be cleaned after a certain period of time, the pumping of the slurry can be stopped, and the first driving device can be used to drive the traction The tube 25 moves, and the traction tube 25 pulls the filter screen 24 during the movement, so that the filter screen 24 is gradually pulled from a sphere (or ellipsoid) into a tube, so that the large particles inside are squeezed into the feed tube 23 through the feed port 213, and then the second drive device drives the tank body 21 to rotate as a whole, so that the feed tube 23 becomes a vertical state, and the baffle 212 is removed, and the large particles can be discharged through the feed tube 23, and then the baffle 212 is blocked again, and the tank body 21 is readjusted to a horizontal state using the second drive device, and the first drive device pushes the traction tube 25 back to its original position, and the filtering can be restarted. In this way, the entire device not only has a more efficient filtering efficiency, but also can automatically clean the filter cloth efficiently, and the overall operating efficiency is higher and the degree of automation is higher.

[0033] In this embodiment, the traction tube 25 is provided with a ring-shaped clamping plate 26 at one end outside the tank body 21; the first driving device includes a push plate 27 sleeved on the outside of the clamping plate 26, a clamping groove provided on the inside of the push plate 27, and a telescopic cylinder 28 connected to the push plate 27; the clamping plate 26 is clamped in the clamping groove. Specifically, the telescopic cylinder 28 can drive the clamping plate 26 and the traction tube 25 to reciprocate by pushing (or pulling) the push plate 27, so as to achieve the purpose of pulling the filter screen 24.

[0034] In the present embodiment, a push rod 210 is provided inside the feed pipe 23. One end of the push rod 210 is connected to the baffle 212, and the other end passes through the end wall of the feed pipe 23 and is connected to the push plate 27 through a connecting rod 29. Specifically, the movement of the baffle 212 is coordinated with the traction pipe 25 through the push rod 210 and the push plate 27. In this way, when large particles need to be discharged, when the telescopic cylinder 28 pushes the push rod 210 and the traction pipe 25 to move, the baffle 212 will also be pulled by the push rod 210 and the connecting rod 29 at the same time. At this time, the baffle 212 will move to one end of the feed pipe 23 close to the traction pipe 25 inside. As the feed pipe 23 becomes vertical, after the large particles are discharged, at this time, the telescopic cylinder 28 pulls the push plate 27, the traction pipe 25, the push rod 210, the push plate 27 and the baffle 212 back to their original positions. When the baffle 212 returns to its original position, it will push out the large particles remaining inside the feed pipe 23 together, avoiding a large amount of large particles remaining inside.

[0035] On the outer wall of the part of the feed pipe 23 arranged inside the traction pipe 25 in the present embodiment, a spiral chute 211 is provided, and a slider is arranged on the inner wall of the traction pipe 25. The slider is slidably arranged in the chute 211. Specifically, as shown in the attached Figure 6 figure, in this way, during the axial movement of the traction pipe 25, due to the cooperation of the slider and the chute 211, the traction pipe 25 will also rotate. The rotation of the traction pipe 25 will drive the rotation of the filter cloth, so that the filter cloth is twisted together, which can better adhere to the feed pipe 23 and better squeeze the large particles into the feed pipe 23.

[0036] In the present embodiment, a guide rod is provided inside the feed pipe 23. The guide rod is fixedly connected to the inner wall of the feed pipe 23 through a fixing rod; the push rod 210 is of a hollow structure, and the guide rod is arranged inside the push rod 210. Specifically, the function of the guide rod is to make the movement of the baffle 212 and the push rod 210 more stable.

[0037] The telescopic cylinder 28 in the present embodiment is one of a pneumatic type, a hydraulic type or an electric type. There are a pair of telescopic cylinders 28, and the pair of telescopic cylinders 28 are both arranged on opposite sides of the tank body 21.

[0038] One end of the feed pipe 23 in the present embodiment, which is far from the slurry pipe 31, is connected with a discharge pipe, and the discharge pipe is a flexible pipe.

[0039] The second driving device in the present embodiment includes a rotating shaft 14 connected to the outer wall of the tank body 21, a motor 12, and a transmission belt 13 for connecting the motor 12 and the rotating shaft 14; the motor 12 is arranged on the bracket 11.

[0040] In this embodiment, a pair of separation devices are provided, and the slurry pipe 31 is connected to the pair of separation devices at the same time; a three-way valve 32 is provided on the slurry pipe 31; the slurry pipe 31 is a soft pipe. Specifically, since the input of slurry needs to be stopped when cleaning impurities, multiple separation devices can be provided, and the flow direction of the slurry is controlled by the three-way valve 32, so that the slurry can be continuously and comfortably filtered, and the slurry with a high content of large particles can also be well processed, without the need for frequent manual cleaning of the filter device, and without the need to shut down, and the whole process is carried out continuously.

[0041] In summary, the slurry coarse particle screening device for phosphate ore of this embodiment, when in use, pumps the slurry into the feed pipe 23 through the slurry pipe 31 (at this time, the tank body 21 and the feed pipe 23 are kept horizontal), and then the feed port 213 on the slurry barrel feed pipe 23 enters the interior of the filter screen 24, and after the filter screen 24 is stretched open, it overflows from the gap of the filter screen 24 and is discharged from the slurry discharge port 22 on the lower side of the tank body 21, while large particles of impurities remain in the filter screen 24. When the large particles in the filter screen 24 need to be cleaned after a certain period of time, the pumping of the slurry can be stopped, and the first driving device can be used to drive The traction tube 25 moves, and the traction tube 25 pulls the filter screen 24 during the movement, so that the filter screen 24 is gradually pulled from a sphere (or ellipsoid) to a tube, so that the large particles inside are squeezed into the feed pipe 23 through the feed port 213, and then the second drive device drives the tank body 21 to rotate as a whole, so that the feed pipe 23 becomes a vertical state, and the baffle 212 is removed, and the large particles can be discharged through the feed pipe 23, and then the baffle 212 is blocked again, and the tank body 21 is readjusted to a horizontal state using the second drive device, and the first drive device pushes the traction tube 25 back to its original position, and the filtering can be restarted. In this way, the entire device not only has a more efficient filtering efficiency, but also can automatically clean the filter cloth efficiently, and the overall operating efficiency is higher and the degree of automation is higher.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A slurry coarse particle screening device for phosphate ore, characterized in that: It comprises a separation device and a slurry pipe (31) connected to the separation device; The separation device comprises a support (11), a tank body (21) arranged on the support (11), a pulp discharge port (22) provided on the lower side wall of the tank body (21), a feed pipe (23) passing through the tank body (21), a filter screen (24) arranged in the tank body (21) and sleeved on the outer wall of the feed pipe (23), a traction pipe (25) connected to one end of the filter screen (24), a first driving device for driving the traction pipe (25) to move axially, a baffle (212) arranged in the feed pipe (23) at one end away from the traction pipe (25), and a second driving device for driving the tank body (21) to rotate; The filter screen (24) is spherical, and the slurry pipe (31) is connected to one end of the feed pipe (23) located outside the tank body (21); one end of the filter screen (24) away from the traction pipe (25) is connected to the outer wall of the feed pipe (23), and a feed port (213) is provided on the side wall of the part of the feed pipe (23) located inside the tank body (21), and the traction pipe (25) is located between the feed pipe (23) and the tank body (21).

2. The slurry coarse particle screening device for phosphate ore according to claim 1, characterized in that: The traction tube (25) is provided with an annular clamping plate (26) at one end outside the tank body (21); the first driving device comprises a push plate (27) sleeved on the outside of the clamping plate (26), a clamping groove provided on the inside of the push plate (27), and a telescopic cylinder (28) connected to the push plate (27); the clamping plate (26) is clamped in the clamping groove.

3. The slurry coarse particle screening device for phosphate ore according to claim 2, characterized in that: A push rod (210) is provided in the feed pipe (23), one end of the push rod (210) is connected to the baffle (212), and the other end passes through the end wall of the feed pipe (23) and is connected to the push plate (27) via a connecting rod (29).

4. The slurry coarse particle screening device for phosphate ore according to claim 1, characterized in that: The outer wall of the portion of the feed pipe (23) disposed inside the traction pipe (25) is provided with a spiral slide groove (211), and the inner wall of the traction pipe (25) is provided with a slider, which is slidably disposed in the slide groove (211).

5. The slurry coarse particle screening device for phosphate ore according to claim 3, characterized in that: A guide rod is provided inside the feed pipe (23), and the guide rod is fixedly connected to the inner wall of the feed pipe (23) via a fixing rod; The push rod (210) is a hollow structure, and the guide rod is arranged inside the push rod (210).

6. The slurry coarse particle screening device for phosphate ore according to claim 2, characterized in that: The telescopic cylinder (28) is of pneumatic, hydraulic or electric type.

7. The slurry coarse particle screening device for phosphate ore according to claim 6, characterized in that: A pair of telescopic cylinders (28) are provided, and the pair of telescopic cylinders (28) are both arranged on two opposite sides of the tank body (21).

8. The slurry coarse particle screening device for phosphate ore according to claim 1, characterized in that: One end of the feed pipe (23) away from the slurry pipe (31) is connected to a discharge pipe, and the discharge pipe is a soft pipe.

9. The slurry coarse particle screening device for phosphate ore according to claim 1, characterized in that: The second driving device comprises a rotating shaft (14) connected to the outer wall of the tank body (21), a motor (12), and a transmission belt (13) for connecting the motor (12) and the rotating shaft (14); the motor (12) is arranged on the bracket (11).

10. The slurry coarse particle screening device for phosphate ore according to any one of claims 1 to 9, characterized in that: The separation device is provided with a pair, and the slurry pipe (31) is communicated with the pair of separation devices at the same time; a three-way valve (32) is provided on the slurry pipe (31); the slurry pipe (31) is a soft pipe.

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