Sorting device with cross-flow sorting function

Abstract

The utility model provides a sorting device with a cross-flow sorting function. The sorting device sequentially comprises a ladder-flow sorting part, a first discharging device and a cross-flow sorting part from a feeding end to a discharging end, the ladder flow sorting part comprises a first air distribution plate and a first air supply mechanism; the through-flow sorting part comprises a second air distribution plate and a through-flow discharging device; a plurality of first air holes are formed in the first air distribution plate in an array mode, and the maximum radial size of the first air holes is smaller than or equal to the effective sorting particle size lower limit of materials to be sorted. A plurality of second air holes are formed in the second air distribution plate in an array mode, and the maximum radial size of the second air holes is larger than the effective sorting particle size lower limit of the materials to be sorted. And the through-flow discharging device is arranged below the second air distribution plate and is used for discharging the to-be-sorted materials flowing through the second air distribution plate. By means of the arrangement, part of materials can enter the through-flow discharging device through the second air holes and are discharged out of the sorting machine, the whole sorting precision is improved, and the problem that a mixed layer is difficult to sort is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sorting, in particular to a sorting device with through-flow sorting. Background Art

[0002] Wind sorting equipment usually separates materials into layers according to density under the action of a force field, and then discharges different materials by layer. When the particle size ratio of the material to be sorted exceeds the particle size ratio of the wind sorting equipment, mixed layers may be produced, resulting in reduced sorting accuracy, and coal containing gangue or gangue containing coal does not meet the requirements. Utility Model Content

[0003] The main purpose of the utility model is to provide a sorting device with through-flow sorting to solve the problem in the related art that the sorting accuracy decreases when the sorting particle size ratio is exceeded.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a sorting device with through-flow sorting, which includes, from the feed end to the discharge end, a step-flow sorting part, a first discharging device, and a through-flow sorting part in sequence; the step-flow sorting part includes a first air distribution plate and a first air supply mechanism; the through-flow sorting part includes a second air distribution plate and a through-flow discharging device; a plurality of first air holes are arranged in an array on the first air distribution plate, and the maximum radial dimension of the first air holes is less than or equal to the lower limit of the effective sorting particle size of the material to be sorted; a plurality of second air holes are arranged in an array on the second air distribution plate, and the maximum radial dimension of the second air holes is greater than the lower limit of the effective sorting particle size of the material to be sorted; the through-flow discharging device is arranged below the second air distribution plate, and is used to discharge the material to be sorted that flows through the second air distribution plate.

[0005] Furthermore, the second air hole is a circular hole, a long circular hole, or a polygonal hole.

[0006] Furthermore, the second air hole is a long circular hole with a length-to-width ratio of 1.5-4.

[0007] Furthermore, the included angle of the second air holes along the material flow direction is 20°-70°, and the second air holes in two adjacent rows are arranged in a mirror-image manner.

[0008] Furthermore, the through-flow discharge device includes a second air chamber arranged below the second air distribution plate and connected to the second air distribution plate, a second air supply pipe is connected below the second air chamber, and a discharge device is provided below the second air supply pipe.

[0009] Furthermore, it also includes an air inlet main pipe, the first air supply mechanism includes a first air chamber and a first air supply pipe, the first air chamber is connected and arranged below the first air distribution plate, the first air supply pipe is connected and arranged below the first air chamber, and the air inlet ends of the first air supply pipe and the second air supply pipe are both connected to the air inlet main pipe.

[0010] Furthermore, a plurality of first air supply mechanisms and a plurality of flow-through discharge devices are provided along the width direction of the sorting device; the first air supply pipes of the plurality of first air supply mechanisms and the second air supply pipes of the plurality of flow-through discharge devices are all connected to the air inlet main pipe.

[0011] Furthermore, it includes a plurality of air inlet main pipes, which are arranged one by one correspondingly with the first air supply mechanism and the through-flow discharge device.

[0012] Furthermore, a plurality of second air supply pipes are connected to the unloading device through branch pipes.

[0013] Further, the unloading device rotates the unloader or the gate valve.

[0014] The technical solution of the utility model is applied, and from the feed end to the discharge end, it includes: a ladder flow sorting part, a first discharging device, and a through-flow sorting part in sequence; the ladder flow sorting part includes a first air distribution plate and a first air supply mechanism; the through-flow sorting part includes a second air distribution plate and a through-flow discharging device; a plurality of first air holes are arranged in an array on the first air distribution plate, and the maximum radial dimension of the first air holes is less than or equal to the lower limit of the effective sorting particle size of the material to be sorted; a plurality of second air holes are arranged in an array on the second air distribution plate, and the maximum radial dimension of the second air holes is greater than the lower limit of the effective sorting particle size of the material to be sorted; the through-flow discharging device is arranged below the second air distribution plate, and is used for discharging the material to be sorted that flows through the second air distribution plate. Through the above arrangement, the material enters the sorting bed from the feeding end, and is gradually stratified in the cascade sorting section. The bottom layer is large-particle high-density material, and upwards are a mixed layer of small-particle high-density and large-particle low-density, and a small-particle low-density layer; before entering the through-flow sorting section, the large-particle high-density material in the bottom layer is directly discharged after passing through the first discharging device, and the remaining material continues to move into the through-flow sorting section. Since the inner diameter of the second air hole is larger than the lower limit of the material sorting, part of the material will enter the through-flow discharging device through the second air hole and be discharged from the sorting machine, so that the material that continues to move forward is further purified, the accuracy of the entire sorting is improved, and the problem of difficult sorting of the mixed layer is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 A side view schematic diagram of a first embodiment of a sorting device according to the utility model is shown;

[0017] Figure 2 Shows Figure 1 A partial enlarged view of the sorting device at A;

[0018] Figure 3A schematic diagram showing that the discharge device is a rotary discharger or a gate valve.

[0019] The above drawings include the following reference numerals:

[0020] Feeding end; 2. Discharging end; 3. Step flow sorting section; 4. First discharging device; 5. Through-flow sorting section; 6. First air distribution plate; 7. First air hole; 8. First air supply mechanism; 9. Second air distribution plate; 9-1. Second air hole; 10. Through-flow discharging device; 11. Second air chamber; 12. Second air supply duct; 13. Discharging device; 14. First air chamber; 15. First air supply duct; 16. Air inlet main pipe; 17. Branch pipe. DETAILED DESCRIPTION

[0021] 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. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] like Figure 1As shown, in the embodiment, a sorting device with through-flow sorting includes, from the feed end 1 to the discharge end 2, a ladder flow sorting part 3, a first discharge device 4, and a through-flow sorting part 5; the ladder flow sorting part 3 includes a first air distribution plate 6 and a first air supply mechanism 8; the through-flow sorting part 5 includes a second air distribution plate and a through-flow discharge device; the first discharge device 4 is arranged in the ladder flow sorting part 3 There is a gap between the first air distribution plate and the through-flow sorting part 5, and between the first air distribution plate and the second air distribution plate. The gap is the entrance of the first discharge device 4, which is used to discharge the materials in the bottom layer of the ladder flow sorting part 3; a plurality of first air holes 7 are arranged in an array on the first air distribution plate 6, and the maximum radial size of the first air holes 7 is less than or equal to the lower limit of the effective sorting particle size of the material to be sorted; when the material to be sorted is in the ladder flow sorting part 3, since the size of the first air hole 7 is less than or equal to the lower limit of the effective sorting particle size of the material to be sorted, the material to be sorted will not leak through the first air hole 7, but will be lifted by the wind, and stratification is achieved under the action of vibration; a plurality of second air holes 9-1 are arranged in an array on the second air distribution plate 9, and the second air holes 9- 1 has a maximum radial dimension that is larger than the lower limit of the effective sorting particle size of the material to be sorted; when the material to be sorted enters the through-flow sorting section, the bottom layer contacts the second air distribution plate 9. Since the maximum radial dimension of the second air hole 9-1 is larger than the lower limit of the effective sorting particle size of the material to be sorted, some of the bottom layer materials that are smaller than the inner diameter of the second air hole 9-1 will leak out; the material contacting the second air distribution plate 9 is a mixed layer of large particles with low density and small particles with high density, so the small particles with high density will leak out through the second air hole 9-1, thereby improving and enhancing the accuracy of the discharge end; the through-flow discharge device is arranged below the second air distribution plate 9, and is used to discharge the material to be sorted that flows through the second air distribution plate 9.

[0023] It should be noted that, usually the first air hole 7 and the second air hole 9-1 are circular holes, but regular polygons, such as regular octagons, etc., may also be used. The aforementioned effective sorting particle size is the material particle size range that a sorting device can sort in a fixed process, but this effective sorting particle size range is not equivalent to the sorting range. For example, the sorting device of the utility model can sort materials of 1-80 mm, but the ratio of the sorting particle size in the same sorting process or flow is 4-7 times, that is, the material entering a certain sorting device can be 1-7 mm or 7-49 mm, and both particle size ranges can be effectively sorted, but if it directly enters 1-49 or larger, it cannot be effectively sorted because the particle size range is too large and the various parameters cannot be coordinated to achieve ideal stratification.

[0024] like Figure 2 As shown, the second air hole 9-1 is a long circular hole with semicircular ends and a rectangular middle, forming a long circular hole. The air hole designed in this way can effectively reduce the blockage phenomenon. At this time, the maximum radial dimension refers to the dimension of the long side.

[0025] Specifically, the aspect ratio of the second air hole 9-1 in the shape of an elongated circular hole can be set to 1.5-4 to further reduce clogging. Compared with the circular hole, even if a material is stuck in the elongated circular hole, due to its elongated design, material can also leak out from other positions. With the continuous action of vibration and wind, the stuck material will also fall off, thereby reducing the possibility of clogging.

[0026] like Figure 2 As shown, the angle of the second air holes 9-1 of the long circular holes along the material flow direction is 20°-70°, and the second air holes 9-1 of two adjacent rows are arranged in a mirror-image manner.

[0027] Specifically, after the second air hole 9-1 is set as a long round hole, the arrangement problem is involved. It can be arranged with the long axis direction consistent with the material movement direction, or it can be arranged with the long axis perpendicular to the material movement direction. Preferably, it is arranged at a certain angle, and its long axis is 20°-70° with the material movement direction. It can be tilted to the left, or it can be tilted to the right in a mirror image, or as shown in FIG. Figure 2 As shown, the second air holes 9-1 in two adjacent rows are arranged in a mirror-image manner to prevent material blockage.

[0028] like Figure 2 As shown, the through-flow discharge device includes a second air chamber 11 disposed below the second air distribution plate 9 and connected to the second air distribution plate 9, a second air supply pipe 12 is connected below the second air chamber 11, and a discharge device 13 is provided below the second air supply pipe 12.

[0029] Specifically, the function of the through-flow discharge device 10 is designed for the mixed layer. A second air chamber 11 is arranged under the second air distribution plate 9. The cross-sectional area of ​​the upper end is larger than that of the lower end. In addition to uniform air distribution, it can also provide a channel for the through-flowing materials to be collected and discharged. The second air supply pipe 12 is connected below the second air chamber 11, and a discharge device 13 is arranged below the second air supply pipe 12. The materials that flow through the second air distribution plate 9 enter the second air chamber 11 and are discharged through the second air supply pipe 12 after being collected. The discharge device 13 is installed on the bottom side wall of the second air supply pipe 12. The through-flowing materials are continuously discharged through the discharge device, which can be continuous discharge or intermittent discharge.

[0030] like Figure 1 As shown, the first air supply mechanism 8 includes a first air chamber 14 and a first air supply pipe 15 . The first air chamber 14 is connected and arranged below the first air distribution plate 6 , and the first air supply pipe 15 is connected and arranged below the first air chamber 14 .

[0031] Specifically, the cross-sectional area of ​​the upper end of the first air chamber 14 is larger than that of the lower end. The upper end is connected to the first air distribution plate 6, and the lower end is connected to the first air supply duct 15. The wind enters the first air chamber 14 after passing through the first air supply duct 15, achieving the effect of uniform air distribution. The wind entering the ladder flow sorting section is uniform on the entire air distribution plate.

[0032] like Figure 1 As shown, it also includes an air inlet main pipe 16 , and the air inlet ends of the first air supply pipe 15 and the second air supply pipe 12 are both connected to the air inlet main pipe 16 .

[0033] Specifically, a section of the air inlet pipe 16 is connected to a fan to provide air to the entire sorting device. From the air inlet end to the air outlet end, the air inlet ends of the first air supply pipe 15 and the second air supply pipe 12 are both connected to the air inlet pipe 16. The cross-sectional area of ​​the air inlet pipe 16 gradually decreases, so that the air volume entering the first air supply pipe 15 and the second air supply pipe 12 is different, and regulating valves are provided on the first air supply pipe 15 and the second air supply pipe 12 to control the air volume entering the sorting bed. The air volume in the through-flow sorting section is smaller than that in the ladder flow sorting section.

[0034] like Figure 1 As shown, a plurality of first air supply mechanisms 8 and a plurality of through-flow discharge devices 10 are provided along the width direction of the sorting device.

[0035] Specifically, when the width of the sorting bed exceeds a certain value or the length exceeds a certain value, in order to achieve uniform air distribution, the air distribution plate needs to be divided into several areas, and an air supply mechanism is set under each area. Multiple air supply mechanisms can be arranged along the width direction, multiple air supply mechanisms can be arranged along the material movement direction, or multiple air supply mechanisms can be arranged in both the length and width directions.

[0036] like Figure 1 As shown, the first air supply pipes of the plurality of first air supply mechanisms 8 and the second air supply pipes 12 of the plurality of flow-through discharge devices are all connected to the main air inlet pipe 16 .

[0037] Specifically, there is one air inlet pipe 16, and the plurality of first air supply pipes 15 and the plurality of second air supply pipes 12 are connected to the one air inlet pipe 16 regardless of whether they are arranged along the width direction or the length direction of the sorting bed. One end of the air inlet pipe is connected to the fan, and a plurality of air outlets are provided on the side wall of the pipe to connect to the first air supply pipe 15 and the second air supply pipe 12.

[0038] like Figure 1 As shown, it includes a plurality of air inlet main pipes 16, and the air inlet main pipes 16 are arranged one by one correspondingly with the first air supply mechanism 8 and the through-flow discharge device.

[0039] Specifically, a plurality of air inlet pipes 16 are provided, and each air inlet pipe 16 is connected to one or more first air supply pipes 12 and second air supply pipes 15 arranged in the length direction. Each air inlet pipe is independently connected to a fan to independently control the air supply volume.

[0040] like Figure 3 As shown, a plurality of second air supply pipes are connected to the unloading device via branch pipes 17 .

[0041] Specifically, when a plurality of second air supply pipes are provided, they can be connected to a discharge device through a branch pipe 17 according to the on-site working conditions.

[0042] like Figure 3 As shown, the unloading device is a rotary unloader or a gate valve, and other unloading devices that can realize the unloading function can be applied to the present application.

[0043] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0044] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein are interpreted accordingly.

[0045] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0046] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A sorting device with through-flow sorting, characterized in that: From the feed end to the discharge end, it includes: a stepped flow sorting section, a first discharging device, and a through-flow sorting section in sequence; the stepped flow sorting section includes a first air distribution plate and a first air supply mechanism; the through-flow sorting section includes a second air distribution plate and a through-flow discharging device; a plurality of first air holes are arranged in an array on the first air distribution plate, and the maximum radial dimension of the first air holes is less than or equal to the lower limit of the effective sorting particle size of the material to be sorted; a plurality of second air holes are arranged in an array on the second air distribution plate, and the maximum radial dimension of the second air holes is greater than the lower limit of the effective sorting particle size of the material to be sorted; the through-flow discharging device is arranged below the second air distribution plate, and is used for discharging the material to be sorted that flows through the second air distribution plate.

2. A sorting device with through-flow sorting according to claim 1, characterized in that: The second air hole is a circular hole, a long circular hole or a polygonal hole.

3. A sorting device with through-flow sorting according to claim 2, characterized in that: The second air hole is a long circular hole with a length-to-width ratio of 1.5-4.

4. A sorting device with through-flow sorting according to claim 3, characterized in that: The included angle of the second air holes along the material flow direction is 20°-70°, and the second air holes in two adjacent rows are arranged in a mirror-image manner.

5. A sorting device with through-flow sorting according to claim 1, characterized in that: The through-flow discharge device includes a second air chamber disposed below the second air distribution plate and connected to the second air distribution plate, a second air supply pipe is connected below the second air chamber, and a discharge device is provided below the second air supply pipe.

6. A sorting device with through-flow sorting according to claim 5, characterized in that: It also includes an air inlet main pipe, the first air supply mechanism includes a first air chamber and a first air supply pipe, the first air chamber is connected and arranged below the first air distribution plate, and the first air supply pipe is connected and arranged below the first air chamber; the air inlet ends of the first air supply pipe and the second air supply pipe are both connected to the air inlet main pipe.

7. A sorting device with through-flow sorting according to claim 6, characterized in that: A plurality of the first air supply mechanisms and a plurality of the through-flow discharge devices are provided along the width direction of the sorting device, and the first air supply pipes of the plurality of the first air supply mechanisms and the second air supply pipes of the plurality of the through-flow discharge devices are all connected to the air inlet main pipe.

8. A sorting device with through-flow sorting according to claim 7, characterized in that: It comprises a plurality of air inlet main pipes, and the air inlet main pipes are arranged in one-to-one correspondence with the first air supply mechanism and the through-flow discharge device.

9. A sorting device with through-flow sorting according to claim 8, characterized in that: A plurality of the second air supply pipes are connected to the unloading device via branch pipes.

10. A sorting device with through-flow sorting according to any one of claims 5 to 8, characterized in that: The unloading device is a rotary unloader or a gate valve.

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