Heavy medium cyclone for cleaning coal dressing

Abstract

The utility model relates to the technical field of coal mine screening, and discloses a dense medium cyclone for cleaning coal dressing. The lower barrel body is fixedly mounted at the bottom opening of the upper barrel body; the feeding pipe is fixedly mounted at the top of the outer side wall of the upper barrel, and an inner cavity of the feeding pipe communicates with an inner cavity of the upper barrel; the positioning pipe is fixedly mounted in the center of the top of the upper barrel, and an inner cavity of the positioning pipe communicates with an inner cavity of the upper barrel; the overflow component is mounted in the positioning pipe; the spiral material lifting component is mounted on the overflow component; and when the spiral material lifting component spirally moves, fine particles screened out in the upper barrel can be lifted upwards. According to the utility model, when the spiral material lifting component in the overflow component runs, fine particles in the overflow component can be lifted upwards and conveyed outwards in a spiral rotation manner, so that the passing speed of the fine particles in the overflow component is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine screening, in particular to a heavy medium cyclone for washing clean coal. Background Art

[0002] Patent document CN213032732U discloses a heavy medium cyclone, comprising: a shell assembly, including an upper barrel body and a lower barrel body installed at the bottom of the upper barrel body; an overflow assembly, including a positioning tube installed at the top of the upper barrel body and an overflow pipe embedded in the inner side of the positioning tube; a feed pipe, wherein the feed pipe is installed at the upper right side of the upper barrel body; wherein the overflow pipe can adjust its position up and down in the inner cavity of the positioning tube.

[0003] The above patent document states in paragraph

[0023] of its specification as follows: "Coarse particles are thrown toward the wall of the vessel due to the large inertial centrifugal force, and gradually flow downward and are discharged from the bottom to become sediment. Fine particles move toward the wall of the vessel at a lower speed and are driven by the liquid flowing toward the center to flow out from the center overflow pipe." It can be seen that the fine particles are transported outward through the overflow pipe.

[0004] However, although the overflow pipe in the above patent document can transport the screened fine particles to the outside, the transport speed of the fine particles by the overflow pipe is relatively slow.

[0005] Based on this, a heavy medium cyclone for washing clean coal is proposed. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] In view of the shortcomings of the prior art, the utility model provides a heavy medium cyclone for washing and cleaning coal to solve the problem raised in the background technology: Patent document CN213032732U discloses a heavy medium cyclone, whose overflow pipe can transport the screened fine particles to the outside, but the overflow pipe has a slow conveying speed for the fine particles.

[0008] (II) Technical solution

[0009] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0010] A heavy medium cyclone for washing clean coal, comprising:

[0011] an upper cylinder having a closed top and an open bottom;

[0012] A lower cylinder, which is fixedly mounted at the bottom opening of the upper cylinder;

[0013] A feed pipe, which is fixedly mounted on the top of the outer wall of the upper cylinder, and the inner cavity of the feed pipe is connected with the inner cavity of the upper cylinder;

[0014] A positioning tube, which is fixedly mounted at the top center of the upper cylinder, and the inner cavity of the positioning tube is connected to the inner cavity of the upper cylinder;

[0015] an overflow component installed in the positioning tube; and

[0016] A spiral material lifting component installed on the overflow component;

[0017] When the spiral material lifting component performs spiral motion, the screened fine particles in the upper cylinder can be lifted upward.

[0018] Preferably, it also includes:

[0019] A positioning structure is installed on the positioning tube.

[0020] Preferably, the cross section of the lower cylinder is conical, and a discharge nozzle is integrally formed at the bottom of the lower cylinder.

[0021] Preferably, an inner spiral section is fixedly installed at the lower position of the inner side wall of the upper cylinder.

[0022] Preferably, the overflow component comprises an overflow pipe, an overflow branch head is fixedly installed at the top of the outer wall of the overflow pipe, the inner cavity of the overflow branch head is connected with the inner cavity of the overflow pipe, and a top cover is fixedly installed on the top of the overflow pipe;

[0023] The overflow pipe is inserted and installed in the positioning pipe;

[0024] The positioning structure comprises a plurality of internally threaded sleeves fixedly mounted on the outer wall of the positioning tube, the plurality of internally threaded sleeves are circumferentially distributed on the outer wall of the positioning tube, and the inner cavity of each of the internally threaded sleeves is connected to the inner cavity of the positioning tube;

[0025] A hexagon socket positioning bolt is threadedly installed on each of the internally threaded sleeves, and each of the hexagon socket positioning bolts can be loosened or tightened in the corresponding internally threaded sleeve. When loosened, the overflow pipe can move upward or downward in the positioning pipe. When tightened, the screw end face of the hexagon socket positioning bolt can abut against the outer side wall of the overflow pipe and generate a clamping force.

[0026] Preferably, the overflow pipe and the overflow branch are in an inverted L shape after being combined.

[0027] Preferably, the spiral material lifting component includes a conveying auger, the conveying auger is rotatably installed in the inner cavity of the overflow pipe, the shaft at the top of the conveying auger penetrates the top cover upward, and after the penetration, the end surface of the shaft at the top of the conveying auger is flush with the upper surface of the top cover;

[0028] An annular fixing frame is sleeved and installed on the shaft rod at the bottom end of the conveying auger, and the outer ring of the annular fixing frame is fixedly installed at the bottom of the inner cavity of the overflow pipe;

[0029] The spiral material lifting component also includes a motor, which is fixedly mounted on the upper surface of the top cover, and after being fixed, the output shaft of the motor is fixedly connected to the shaft rod at the top of the conveying auger;

[0030] The motor can make the conveying auger rotate spirally in the inner cavity of the overflow pipe through its output shaft.

[0031] (III) Beneficial effects

[0032] The utility model provides a heavy medium cyclone for washing clean coal, which has the following beneficial effects:

[0033] 1. In the utility model, when the spiral material lifting component in the overflow component is in operation, it can lift the fine particles in the overflow component upward and transport them outward in the form of spiral rotation to accelerate the passing speed of the fine particles in the overflow component.

[0034] Second, in the utility model, after the overflow component is installed in the positioning tube, it can be adjusted up and down in the positioning tube so that the overflow component is in a suitable position in the positioning tube.

[0035] 3. In the utility model, under the action of the inner spiral section, not only the feeding speed of the slurry in the upper cylinder can be increased, but also the slurry can generate vortex when feeding, thereby enhancing the centrifugal force when the slurry is fed, so as to better screen and separate the coarse particles and fine particles in the slurry.

[0036] 4. In the utility model, the positioning structure includes a plurality of internal threaded sleeves fixedly mounted on the side wall of the positioning tube, each internal threaded sleeve is threadedly mounted with a hexagon socket positioning bolt, and each of the hexagon socket positioning bolts can be loosened or tightened in the corresponding internal threaded sleeve. When loosened, the overflow pipe can move upward or downward in the positioning tube. When tightened, the screw end face of the hexagon socket positioning bolt can abut against the outer side wall of the overflow pipe and generate a clamping force, thereby fixing the position of the overflow pipe.

[0037] 5. In the utility model, the spiral material lifting component includes a conveying auger and a motor. The motor can make the conveying auger rotate spirally in the inner cavity of the overflow pipe through its output shaft. When the conveying auger rotates spirally in the inner cavity of the overflow pipe, the fine particles of the slurry in the overflow pipe can be lifted to the overflow branch head and transported outward through the overflow branch head. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0039] Figure 2 It is a three-dimensional schematic diagram of a partial cross section of the utility model;

[0040] Figure 3 for Figure 2 The enlarged three-dimensional schematic diagram of part A in the middle;

[0041] Figure 4 It is a three-dimensional schematic diagram of a partial cross section of the overflow pipe, the conveying auger and the annular fixing frame of the utility model after being combined;

[0042] Figure 5 It is a three-dimensional schematic diagram of the utility model when viewed from above.

[0043] In the figure: 10, upper cylinder; 20, lower cylinder; 201, discharge nozzle; 30, feed pipe; 40, positioning pipe; 50, overflow pipe; 501, overflow branch; 502, top cover; 60, internal threaded sleeve; 70, hexagon socket positioning bolt; 80, conveying auger; 90, motor; 100, annular fixing frame; 110, internal spiral section. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0045] Embodiment 1

[0046] like Figure 1-5 As shown, the utility model provides a technical solution:

[0047] A heavy medium cyclone for washing clean coal, comprising:

[0048] The upper cylinder 10 has a closed top and an open bottom;

[0049] Among them, the diameter of the upper cylinder 10 is 996mm;

[0050] The lower cylinder 20 is fixedly mounted at the bottom opening of the upper cylinder 10;

[0051] A feed pipe 30 is fixedly mounted on the top of the outer wall of the upper cylinder 10, and the inner cavity of the feed pipe 30 is connected to the inner cavity of the upper cylinder 10;

[0052] Among them, the caliber of the feed pipe 30 is 240mm*240mm;

[0053] A positioning tube 40 is fixedly mounted at the top center of the upper cylinder 10, and the inner cavity of the positioning tube 40 is connected to the inner cavity of the upper cylinder 10;

[0054] An overflow component installed in the positioning tube 40;

[0055] Wherein, the length of the overflow component is 1600 mm; and

[0056] A spiral material lifting component installed on the overflow component;

[0057] When the spiral material lifting component performs spiral motion, the screened fine particles in the upper cylinder 10 can be lifted upward.

[0058] In this embodiment, the heavy medium cyclone is mainly used in the process of washing clean coal. Specifically, in this process, by increasing the size of the feed pipe 30 and the upper cylinder 10 and increasing the length of the overflow component, the raw coal washing rate can be improved. At the same time, the slurry is then introduced through the feed pipe 30. Under the action of pressure, the slurry can be poured into the upper cylinder 10 along the feed pipe 30, and then rotated under the restriction of the wall of the upper cylinder 10.

[0059] In this process, coarse particles are thrown toward the wall of the upper cylinder 10 due to the large inertial centrifugal force, and gradually flow downward and are discharged from the bottom of the lower cylinder 20 to become settled sand, while fine particles move toward the wall of the upper cylinder 10 at a lower speed and are driven by the liquid flowing toward the center into the overflow component. When the spiral material lifting component in the overflow component is in operation, it can lift the fine particles in the overflow component upward in the form of spiral rotation and transport them outward to speed up the passing speed of the fine particles in the overflow component.

[0060] In this embodiment, after the overflow component is installed in the positioning tube 40 , it can be adjusted up and down in the positioning tube 40 so that the overflow component is in a suitable position in the positioning tube 40 .

[0061] Embodiment 2

[0062] like Figure 1-5 As shown, based on the first embodiment, the following improvements are made:

[0063] In order to position the overflow component, the inventor further provides, in this embodiment, a positioning structure installed on the positioning tube 40. The positioning structure installed on the positioning tube 40 can fix the position of the overflow component after the overflow component is adjusted.

[0064] Embodiment 3

[0065] like Figure 1-5 As shown, based on the first embodiment, the following improvements are made:

[0066] In order to increase the material discharge pressure to facilitate overflow, the inventors, in this embodiment, further, the cross section of the lower cylinder 20 is conical, and a discharge nozzle 201 is integrally formed at the bottom of the lower cylinder 20;

[0067] The cone angle of the lower cylinder 20 is 30°.

[0068] Since the cross section of the lower cylinder 20 is conical and the cone angle of the lower cylinder 20 is set to 30°, the feeding pressure of the slurry can be increased to form overflow in the upper cylinder 10 and the lower cylinder 20.

[0069] Embodiment 4

[0070] like Figure 1-5 As shown, based on the first embodiment, the following improvements are made:

[0071] In order to increase the feeding speed of the slurry in the upper cylinder 10 and to enable the slurry to form a vortex in the upper cylinder 10 to enhance the centrifugal force when the slurry is fed, the inventor further fixedly installed an inner spiral section 110 at the lower position of the inner wall of the upper cylinder 10 in this embodiment.

[0072] Under the action of the inner spiral section 110, not only the feeding speed of the slurry in the upper cylinder 10 can be increased, but also the slurry can generate vortex when being fed, thereby enhancing the centrifugal force when the slurry is fed, so as to better screen and separate the coarse particles and fine particles in the slurry.

[0073] Embodiment 5

[0074] like Figure 1-5 As shown, based on the second embodiment, the following improvements are made:

[0075] In order to optimize the specific structure of the overflow component, the inventor further, in this embodiment, the overflow component includes an overflow pipe 50, an overflow branch 501 is fixedly installed at the top of the outer wall of the overflow pipe 50, the inner cavity of the overflow branch 501 is connected to the inner cavity of the overflow pipe 50, and a top cover 502 is fixedly installed on the top of the overflow pipe 50;

[0076] Wherein, the length of the overflow pipe 50 is 1600 mm;

[0077] The overflow pipe 50 is inserted and installed in the positioning pipe 40 . Since the overflow pipe 50 is inserted and installed in the positioning pipe 40 , the overflow pipe 50 can be adjusted up and down in the positioning pipe 40 .

[0078] In order to fix the overflow pipe 50 after adjustment and to optimize the implementation of the positioning structure, the inventors further provide, in this embodiment, a positioning structure including a plurality of internally threaded sleeves 60 fixedly mounted on the outer wall of the positioning pipe 40, wherein the plurality of internally threaded sleeves 60 are circumferentially distributed on the outer wall of the positioning pipe 40, and the inner cavity of each internally threaded sleeve 60 is connected to the inner cavity of the positioning pipe 40;

[0079] A hexagon socket positioning bolt 70 is threadedly installed on each internal threaded sleeve 60, and each hexagon socket positioning bolt 70 can be loosened or tightened in the corresponding internal threaded sleeve 60. When loosened, the overflow pipe 50 can move upward or downward in the positioning tube 40. When tightened, the screw end face of the hexagon socket positioning bolt 70 can abut against the outer wall of the overflow pipe 50 and generate a clamping force, thereby fixing the position of the overflow pipe 50.

[0080] In order to enable fine particles to be transported from the overflow pipe 50 to the outside, the inventor has, in this embodiment, further, formed an inverted L-shape after the overflow pipe 50 and the overflow branch 501 when combined. After the fine particles in the slurry enter the overflow pipe 50, they can be transported to the outside through the overflow branch 501 under the lifting action of the spiral material lifting component.

[0081] Embodiment 6

[0082] like Figure 1-5 As shown, it is improved on the basis of Example 5:

[0083] In order to optimize the specific structure of the spiral material lifting component, the inventor further, in this embodiment, the spiral material lifting component includes a conveying auger 80, which is rotatably installed in the inner cavity of the overflow pipe 50, and the shaft at the top of the conveying auger 80 penetrates the top cover 502 upward, and after the penetration, the end surface of the shaft at the top of the conveying auger 80 is flush with the upper surface of the top cover 502;

[0084] An annular fixing frame 100 is sleeved and installed on the shaft at the bottom end of the conveying auger 80, and the outer ring of the annular fixing frame 100 is fixedly installed at the bottom of the inner cavity of the overflow pipe 50;

[0085] The spiral material lifting component also includes a motor 90, which is fixedly mounted on the upper surface of the top cover 502, and after being fixed, the output shaft of the motor 90 is fixedly connected to the shaft rod at the top of the conveying auger 80;

[0086] The motor 90 can make the conveying auger 80 to perform spiral rotation in the inner cavity of the overflow pipe 50 through its output shaft. When the conveying auger 80 performs spiral rotation in the inner cavity of the overflow pipe 50, the fine particles of the slurry in the overflow pipe 50 can be lifted to the overflow branch 501 and transported outward through the overflow branch 501.

[0087] In summary, the workflow of the utility model is:

[0088] like Figure 1-5 As shown, by increasing the size of the feed pipe 30 and the upper cylinder 10 and increasing the length of the overflow component, the raw coal washing rate can be improved. At the same time, the slurry is then introduced through the feed pipe 30. Under the action of pressure, the slurry can be poured into the upper cylinder 10 along the feed pipe 30, and then rotated under the restriction of the wall of the upper cylinder 10.

[0089] In this process, coarse particles are thrown toward the wall of the upper cylinder 10 due to the large inertial centrifugal force, and gradually flow downward and are discharged from the bottom of the lower cylinder 20 to become settled sand, while fine particles move toward the wall of the upper cylinder 10 at a lower speed and are driven by the liquid flowing toward the center into the overflow component. When the spiral material lifting component in the overflow component is in operation, it can lift the fine particles in the overflow component upward in the form of spiral rotation and transport them outward to speed up the passing speed of the fine particles in the overflow component.

[0090] After the overflow component is installed in the positioning tube 40 , it can be adjusted up and down in the positioning tube 40 so that the overflow component is in a suitable position in the positioning tube 40 .

[0091] Since the cross section of the lower cylinder 20 is conical and the cone angle of the lower cylinder 20 is set to 30°, the feeding pressure of the slurry can be increased to form overflow in the upper cylinder 10 and the lower cylinder 20.

[0092] Under the action of the inner spiral section 110, not only the feeding speed of the slurry in the upper cylinder 10 can be increased, but also the slurry can generate vortex when being fed, thereby enhancing the centrifugal force when the slurry is fed, so as to better screen and separate the coarse particles and fine particles in the slurry.

[0093] The overflow component includes an overflow pipe 50 , and the overflow pipe 50 is plugged and installed in the positioning pipe 40 . Since the overflow pipe 50 is plugged and installed in the positioning pipe 40 , the overflow pipe 50 can be adjusted up and down in the positioning pipe 40 .

[0094] The positioning structure includes a plurality of internal threaded sleeves 60 fixedly mounted on the side wall of the positioning tube 40, each internal threaded sleeve 60 is threadedly mounted with a hexagon socket positioning bolt 70, and each hexagon socket positioning bolt 70 can be loosened or tightened in the corresponding internal threaded sleeve 60. When loosened, the overflow pipe 50 can move upward or downward in the positioning tube 40. When tightened, the screw end face of the hexagon socket positioning bolt 70 can abut against the outer wall of the overflow pipe 50 and generate a clamping force, thereby fixing the position of the overflow pipe 50.

[0095] The spiral material lifting component includes a conveying auger 80 and a motor 90. The motor 90 can make the conveying auger 80 rotate spirally in the inner cavity of the overflow pipe 50 through its output shaft. When the conveying auger 80 rotates spirally in the inner cavity of the overflow pipe 50, the fine particles of the slurry in the overflow pipe 50 can be lifted to the overflow branch 501 and transported outward through the overflow branch 501.

[0096] The above different embodiments can be combined, replaced and used in conjunction with each other.

[0097] It should be noted that, in this article, 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", "comprise" or any other variants 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.

[0098] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heavy medium cyclone for washing clean coal, characterized in that: include: An upper cylinder (10) having a closed top and an open bottom; A lower cylinder (20) fixedly mounted at the bottom opening of the upper cylinder (10); A feed pipe (30) fixedly mounted at the top of the outer wall of the upper cylinder (10), wherein the inner cavity of the feed pipe (30) is in communication with the inner cavity of the upper cylinder (10); A positioning tube (40) fixedly mounted at the top center of the upper cylinder (10), wherein the inner cavity of the positioning tube (40) is in communication with the inner cavity of the upper cylinder (10); An overflow component installed in the positioning tube (40); as well as A spiral material lifting component installed on the overflow component; When the spiral material lifting component performs spiral motion, the screened fine particles in the upper cylinder (10) can be lifted upward.

2. A heavy medium cyclone for clean coal preparation according to claim 1, characterized in that: Also includes: A positioning structure is installed on the positioning tube (40).

3. A heavy medium cyclone for clean coal preparation according to claim 1, characterized in that: The cross section of the lower cylinder (20) is conical, and a discharge nozzle (201) is integrally formed at the bottom of the lower cylinder (20).

4. A heavy medium cyclone for clean coal preparation according to claim 1, characterized in that: An inner spiral section (110) is fixedly mounted at the lower portion of the inner side wall of the upper cylinder (10).

5. A heavy medium cyclone for clean coal preparation according to claim 2, characterized in that: The overflow component comprises an overflow pipe (50), an overflow branch head (501) is fixedly mounted at the top of the outer wall of the overflow pipe (50), the inner cavity of the overflow branch head (501) is connected to the inner cavity of the overflow pipe (50), and a top cover (502) is fixedly mounted on the top of the overflow pipe (50); The overflow pipe (50) is plugged and installed in the positioning pipe (40); The positioning structure comprises a plurality of internally threaded sleeves (60) fixedly mounted on the outer wall of the positioning tube (40), the plurality of internally threaded sleeves (60) being distributed circumferentially on the outer wall of the positioning tube (40), and the inner cavity of each of the internally threaded sleeves (60) being in communication with the inner cavity of the positioning tube (40); Each of the internally threaded sleeves (60) is threadedly mounted with a hexagon socket positioning bolt (70), and each of the hexagon socket positioning bolts (70) can be loosened or tightened in the corresponding internally threaded sleeve (60). When loosened, the overflow pipe (50) can move upward or downward in the positioning pipe (40), and when tightened, the screw end face of the hexagon socket positioning bolt (70) can abut against the outer side wall of the overflow pipe (50) and generate a clamping force.

6. A heavy medium cyclone for clean coal preparation according to claim 5, characterized in that: The overflow pipe (50) and the overflow branch (501) are in an inverted L shape after being assembled.

7. A heavy medium cyclone for clean coal preparation according to claim 5, characterized in that: The spiral material lifting component comprises a conveying auger (80), the conveying auger (80) being rotatably mounted in the inner cavity of the overflow pipe (50), the shaft at the top end of the conveying auger (80) penetrating upwardly through the top cover (502), and after penetrating, the end surface of the shaft at the top end of the conveying auger (80) is flush with the upper surface of the top cover (502); An annular fixing frame (100) is sleeved and mounted on the shaft at the bottom end of the conveying auger (80), and the outer ring of the annular fixing frame (100) is fixedly mounted at the bottom of the inner cavity of the overflow pipe (50); The spiral material lifting component further comprises a motor (90), wherein the motor (90) is fixedly mounted on the upper surface of the top cover (502), and after being fixed, the output shaft of the motor (90) is fixedly connected to the shaft rod at the top end of the conveying auger (80); The motor (90) can cause the conveying auger (80) to rotate spirally in the inner cavity of the overflow pipe (50) through its output shaft.

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