A double series sorting device

Abstract

The present invention discloses a double - series sorting device, which belongs to the technical field of superconducting magnetic separation devices. It includes a transition cylinder, with a first sorting outer cylinder and a second sorting outer cylinder respectively arranged at both ends of the transition cylinder. A first sorting inner cylinder is arranged inside the first sorting outer cylinder, and a first slurry outlet channel is formed by the gap between the first sorting outer cylinder and the first sorting inner cylinder; a second sorting inner cylinder is arranged inside the second sorting outer cylinder, and a second slurry outlet channel is formed by the gap between the second sorting outer cylinder and the second sorting inner cylinder; the first sorting inner cylinder is communicated with the second slurry outlet channel, and the second sorting inner cylinder is communicated with the first slurry outlet channel; magnetic medium assemblies are arranged inside both the first sorting inner cylinder and the second sorting inner cylinder. The present invention changes the traditional series - tank parallel sorting structure to a series - type sorting cavity to realize the sorting operation. The magnetic separation path is longer, more weakly magnetic impurities can be adsorbed, the feeding time for a single operation is longer, the reciprocating working frequency is less, and the loss of the magnetic separation equipment is smaller.

Description

Technical Field

[0001] The present invention relates to the technical field of superconducting magnetic separation devices, and particularly relates to a double-series sorting device. Background Art

[0002] At present, superconducting magnetic separators at home and abroad mainly adopt a sorting mode of reciprocating continuous feeding. The sorting structure under this sorting mode includes an outer sleeve, which can reciprocate along the central axis of the solenoid magnet. The inner area of the outer sleeve is divided into two effective sorting areas and three dummy areas, and the effective sorting areas and the dummy areas are alternately distributed. The middle dummy area separates the two effective sorting areas into two independent sorting units. The effective sorting area is set as a multi-sorting chamber series-tank parallel structure, and each sorting chamber is filled with a magnetic conduction medium to form a number of parallel magnetic separation channels. When one effective sorting area is performing magnetic separation operation inside the magnetic field, the other effective sorting area is performing reverse flushing operation outside the magnetic field, and the two operate alternately to achieve the reciprocating continuous operation mode of the superconducting magnetic separator. At present, superconducting magnetic separators at home and abroad generally follow this mode, which is a recognized sorting technical solution with relatively high efficiency.

[0003] In this sorting mode, there are the following problems: First, the effective sorting area usually adopts a series-tank parallel structure, and there are problems of uneven feeding and uneven flushing between the parallel sorting chambers, which will affect the processing accuracy; Second, the series-tank parallel structure of the effective sorting area is complex, and the utilization degrees of each sorting chamber are different, and the utilization rate of the magnetic separation medium in some sorting chambers is relatively low, which will affect the overall performance of the superconducting magnetic separator; Third, the middle dummy area separates the two effective sorting areas into two independent parts. During use, the inlet and outlet of the pulp in each effective sorting area are located on the same side of the effective sorting area, and there is a 180° turn in the pulp circuit, which will cause serious head loss. Summary of the Invention

[0004] For the problems existing in the prior art, a double-series sorting device provided by the present invention, compared with the traditional series-tank parallel sorting structure, uses a series-type sorting chamber to achieve sorting operation, has a longer magnetic separation path, can adsorb more weakly magnetic impurities, has a longer feeding time for a single operation, a lower reciprocating working frequency, and less loss of the magnetic separation equipment. Moreover, the pulp circuit of the present invention is linear, which can realize the linear recovery of the pulp and eliminate the head loss caused by the 180° turn in the traditional pulp circuit.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A double - series sorting device includes a transition cylinder. The two ends of the transition cylinder are respectively provided with a first sorting outer cylinder and a second sorting outer cylinder connected to the transition cylinder. A first sorting inner cylinder is arranged inside the first sorting outer cylinder, and a first slurry outlet channel is formed in the gap between the first sorting outer cylinder and the first sorting inner cylinder; a second sorting inner cylinder is arranged inside the second sorting outer cylinder, and a second slurry outlet channel is formed in the gap between the second sorting outer cylinder and the second sorting inner cylinder; the first sorting inner cylinder communicates with the second slurry outlet channel, and the second sorting inner cylinder communicates with the first slurry outlet channel; magnetic - conductive medium assemblies are arranged in both the first sorting inner cylinder and the second sorting inner cylinder.

[0007] As a preferred technical solution, both the first sorting inner cylinder and the second sorting inner cylinder are connected with slurry inlet pipes, and both the first slurry outlet channel and the second slurry outlet channel are connected with slurry outlet pipes.

[0008] As a preferred technical solution, a partition plate is arranged inside the transition cylinder, and the partition plate divides the area inside the transition cylinder into a first chamber and a second chamber that are isolated from each other.

[0009] As a preferred technical solution, the cross - sectional area ratio of the water flow between the first chamber and the second slurry outlet channel and between the second chamber and the first slurry outlet channel is 5 - 6:10.

[0010] As a preferred technical solution, the partition plate is provided in two pieces and is in a curved shape.

[0011] As a preferred technical solution, the first chamber communicates with both the first sorting inner cylinder and the second slurry outlet channel respectively; the second chamber communicates with both the second sorting inner cylinder and the first slurry outlet channel respectively.

[0012] As a preferred technical solution, several magnetic - conductive medium assemblies are arranged in both the first sorting inner cylinder and the second sorting inner cylinder, and the magnetic - conductive medium assemblies are distributed along the axial direction of the first sorting inner cylinder or the second sorting inner cylinder.

[0013] As a preferred technical solution, positioning assemblies for positioning the magnetic - conductive medium assemblies are arranged on the inner walls of both the first sorting inner cylinder and the second sorting inner cylinder.

[0014] As a preferred technical solution, the positioning assembly includes two adjacent positioning plates, and there is a gap between the two positioning plates.

[0015] As a preferred technical solution, the magnetic - conductive medium assembly is made of steel wool, steel wire mesh or a medium box.

[0016] The beneficial effects of the present invention are shown in:

[0017] 1. The present invention changes the traditional series-connected pot-type parallel sorting structure to a series-connected sorting chamber to realize the sorting operation. The magnetic separation path is longer, more weakly magnetic impurities can be adsorbed, the feeding time for a single operation is longer, the reciprocating working frequency is less, and the loss of the magnetic separation equipment is smaller.

[0018] 2. The present invention adopts a single magnetic separation path, and the consistency of the finished product quality is better compared with the traditional series-connected pot-type parallel sorting structure.

[0019] 3. The present invention adopts a series-connected sorting chamber structure, which is simpler in structure, has less total filling amount of the magnetic conduction medium, and lower cost compared with the traditional series-connected pot-type parallel sorting structure.

[0020] 4. The pulp circuit of the present invention is linear, which can realize the linear recovery of the pulp and eliminate the head loss caused by the 180° turn in the pulp circuit in the traditional series-connected pot-type parallel sorting structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of a double series-connected sorting device of the present invention.

[0022] In the figure: 1 - transition cylinder, 11 - isolation plate, 21 - first sorting outer cylinder, 22 - first sorting inner cylinder, 23 - first pulp outlet channel, 31 - second sorting outer cylinder, 32 - second sorting inner cylinder, 33 - second pulp outlet channel, 4 - pulp inlet pipeline, 5 - pulp outlet pipeline. DETAILED DESCRIPTION OF THE INVENTION

[0023] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the accompanying drawings.

[0024] Such as Figure 1As shown in the figure, the present invention provides a double - series sorting device, which includes a transition cylinder 1. The two ends of the transition cylinder 1 are respectively provided with a first sorting outer cylinder 21 and a second sorting outer cylinder 31 connected to the transition cylinder 1. A first sorting inner cylinder 22 is arranged inside the first sorting outer cylinder 21, and a first pulp discharge channel 23 is formed in the gap between the first sorting outer cylinder 21 and the first sorting inner cylinder 22; a second sorting inner cylinder 32 is arranged inside the second sorting outer cylinder 31, and a second pulp discharge channel 33 is formed in the gap between the second sorting outer cylinder 31 and the second sorting inner cylinder 32; the first sorting inner cylinder 22 is communicated with the second pulp discharge channel 33 to form a linear pulp circuit; the second sorting inner cylinder 32 is communicated with the first pulp discharge channel 23 to form a second linear pulp circuit, and the two circuits are isolated from each other; magnetic medium assemblies are arranged inside both the first sorting inner cylinder 22 and the second sorting inner cylinder 32. During the magnetic separation operation, when the first sorting inner cylinder 22 is located in a strong magnetic field, the pulp can achieve magnetic separation through the first sorting inner cylinder 22, and the magnetically separated pulp is discharged through the second pulp discharge channel 33. At this time, the second sorting inner cylinder 32 is located outside the strong magnetic field, and the magnetic medium assembly of the second sorting inner cylinder 32 can be flushed, and the magnetic particles washed off can be discharged through the first pulp discharge channel 23; similarly, when the second sorting inner cylinder 32 is located in the strong magnetic field for magnetic separation, the second sorting inner cylinder 32 can be flushed simultaneously.

[0025] In this embodiment, as Figure 1 shown, both the first sorting inner cylinder 22 and the second sorting inner cylinder 32 are connected with a feed pipe 4, and both the first pulp discharge channel 23 and the second pulp discharge channel 33 are connected with a discharge pipe 5. The pulp enters from the feed pipe 4 and is discharged from the discharge pipe 5.

[0026] In this embodiment, as Figure 1 shown, a partition plate 11 is arranged inside the transition cylinder 1. The partition plate 11 divides the area inside the transition cylinder 1 into a first chamber and a second chamber that are isolated from each other. The first chamber is used to connect the first sorting inner cylinder 22 and the second pulp discharge channel 33, and the second chamber is used to connect the second sorting inner cylinder 32 and the first pulp discharge channel 23.

[0027] It should be noted that the first sorting outer cylinder 21 and the second sorting outer cylinder 31 can be integrally formed with the transition cylinder 1 respectively or connected by screws; both the first sorting inner cylinder 22 and the second sorting inner cylinder 32 can be respectively connected and fixed inside the first sorting outer cylinder 21 and the second sorting outer cylinder 31 through the partition plate 11.

[0028] In this embodiment, as Figure 1As shown, there are two partition plates 11, and the partition plates 11 are curved. Since the shapes of the connected first sorting inner cylinder 22 and the second pulp outlet passage 33, as well as the first sorting inner cylinder 22 and the second pulp outlet passage 33, are different, the curved partition plates 11 can effectively connect the first sorting inner cylinder 22 and the second pulp outlet passage 33, and the first sorting inner cylinder 22 and the second pulp outlet passage 33. The transition curved surface of the partition plate 11 enables the pulp to gradually transition from the circular passages of the first and second sorting inner cylinders to the annular passages of the second and first pulp outlet passages.

[0029] It should be noted that since the cross-sections of the first and second pulp outlet passages are annular, in order to ensure that the first chamber and the second chamber formed by the partition plate 11 are respectively connected to the first and second pulp outlet passages while still being isolated from each other, the connections between the first chamber and the first pulp outlet passage 23 and between the second chamber and the second pulp outlet passage 33 can be set as semi-annular. The ends of the first pulp outlet passage 23 that are not directly connected to the first chamber and the ends of the second pulp outlet passage 33 that are not directly connected to the second chamber can be sealed to ensure the closure of the pulp flow passage.

[0030] It should be noted that the cross-sectional area ratio of the water passing through between the first chamber and the second pulp outlet passage 33 and between the second chamber and the first pulp outlet passage 23 is 5 - 6:10. The first chamber and the second chamber are usually in an irregular semi-annular shape. At this cross-sectional area ratio, the semi-annular channel areas of the first chamber and the second chamber can form a turbulent zone, which is particularly conducive to the flow of high-viscosity (such as kaolin) pulp in the narrow channel, and there will be no adhesion or blockage on the pipe wall after long-term use.

[0031] Furthermore, an active agent injection point can be set on the barrel wall of the transition cylinder 1, and the active agent liquid injection point is connected to the first chamber or the second chamber. During the backwashing process, the first chamber and the second chamber are in a negative pressure zone, and the flushing water can inhale a certain dose of the active agent and be fully mixed during the turbulent process; during the backwashing process, the connections between the partition plate 11 and the first sorting inner cylinder 22 and the second sorting inner cylinder 32 form a gradually expanding volume space, and the flushing water with the added active agent diffuses to the circular cross-sectional area of the first sorting inner cylinder 22 or the second sorting inner cylinder 32 here, which can make the reverse cleaning more efficient.

[0032] Even further, a compressed air injection point can also be set on the barrel wall of the transition cylinder 1, and the compressed air injection point is connected to the first chamber or the second chamber; the compressed air breaks into small bubbles in the turbulent zone of the first chamber or the second chamber, enters the first sorting inner cylinder 22 and the second sorting inner cylinder 32 through the partition plate 11, and breaks in the porous medium area of the magnetic medium along with the flushing water flow, prompting the fibers on the magnetic medium to vibrate, which helps to improve the detachment effect of the magnetic adsorbents.

[0033] Specifically, the pulp discharging pipeline 5 is the water inlet end of the flushing water during the backwashing process, and the preferred inlet water pressure range is 0.4 - 0.6 MPa.

[0034] It should be noted that several magnetic medium components are provided in both the first sorting inner cylinder 22 and the second sorting inner cylinder 32. The magnetic medium components are distributed along the axial direction of the first sorting inner cylinder 22 or the second sorting inner cylinder 32, that is, the magnetic medium components are distributed in series; positioning components for positioning the magnetic medium components are provided on the inner walls of the first sorting inner cylinder 22 and the second sorting inner cylinder 32. Specifically, the positioning components include two adjacent positioning plates with a gap between them. The positioning plates are fixed on the inner walls of the first sorting inner cylinder 22 or the second sorting inner cylinder 32, and the magnetic medium components are fixed by clamping the magnetic medium components in the gap between the two positioning plates; in specific use, the magnetic medium components can be set as steel wool, expanded metal or medium boxes.

[0035] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, 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 double - series sorting device, characterized in that, It includes a transition cylinder. At both ends of the transition cylinder, there are respectively a first sorting outer cylinder and a second sorting outer cylinder connected to the transition cylinder. Inside the first sorting outer cylinder, there is a first sorting inner cylinder. The gap between the first sorting outer cylinder and the first sorting inner cylinder forms a first pulp outlet channel; Inside the second sorting outer cylinder, there is a second sorting inner cylinder. The gap between the second sorting outer cylinder and the second sorting inner cylinder forms a second pulp outlet channel; the first sorting inner cylinder communicates with the second pulp outlet channel, and the second sorting inner cylinder communicates with the first pulp outlet channel; there are magnetic medium assemblies inside both the first sorting inner cylinder and the second sorting inner cylinder; Inside the transition cylinder, there is a partition board. The partition board divides the area inside the transition cylinder into a first chamber and a second chamber that are isolated from each other; The cross-sections of both the first pulp outlet channel and the second pulp outlet channel are annular. The connections between the first chamber and the first pulp outlet channel and between the second chamber and the second pulp outlet channel are both semi-annular, ensuring that the first chamber and the second chamber formed by the partition board are respectively connected to the first pulp outlet channel and the second pulp outlet channel while being isolated from each other; the ends of the first pulp outlet channel that are not directly connected to the first chamber and the ends of the second pulp outlet channel that are not directly connected to the second chamber are both sealed to ensure the closure of the pulp flow channel.

2. The double series sorting device according to claim 1, characterized in that, Both the first sorting inner cylinder and the second sorting inner cylinder are connected with feed pipes, and both the first pulp outlet channel and the second pulp outlet channel are connected with discharge pipes.

3. The double series sorting device according to claim 1, characterized in that, The partition board is set to be two pieces, and the partition board is curved.

4. A double series sorting device according to claim 1, characterized in that, The first chamber is respectively connected to the first sorting inner cylinder and the second pulp outlet channel; the second chamber is respectively connected to the second sorting inner cylinder and the first pulp outlet channel.

5. The double series sorting device according to claim 4, characterized in that The cross-sectional area ratio of the water passing area between the first chamber and the second pulp outlet channel and between the second chamber and the first pulp outlet channel is 5 - 6:

10.

6. The double-series sorting device according to claim 1, characterized in that, There are several magnetic medium assemblies inside both the first sorting inner cylinder and the second sorting inner cylinder, and the magnetic medium assemblies are distributed along the axial direction of the first sorting inner cylinder or the second sorting inner cylinder.

7. A double series sorting device according to claim 1 or 6, characterized in that On the inner walls of both the first sorting inner cylinder and the second sorting inner cylinder, there are positioning components for positioning the magnetic medium assemblies.

8. The double-series sorting device according to claim 7, characterized in that, The positioning component includes two adjacent positioning plates, and there is a gap between the two positioning plates.

9. A double series sorting device according to claim 1 or 6, characterized in that, The magnetic medium assembly is set to be steel wool, steel wire mesh or a medium box.

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