Raw coal feeding and scattering device

Abstract

The utility model provides a raw coal feeding and scattering device which is arranged on a feeding hopper, a plurality of layers of blade frames are arranged in the feeding hopper, each blade frame is formed by combining a plurality of blades, the blades on the blade frames on the upper layer and the lower layer are arranged in a staggered mode, and the blade frames on the upper layer and the lower layer are arranged in the raw coal feeding hopper. The upper-layer blade frame can preliminarily scatter raw coal, the lower-layer blade frame can further refine the scattering effect, it is ensured that the raw coal enters the swirler in a more uniform and finer particle form, the caked raw coal entering the swirler is fully scattered and better mixed with suspension liquid, and the separation precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cyclones, in particular to a raw coal feeding and dispersing device. Background Art

[0002] A hydrocyclone is a separation and classification device that operates on the principle of centrifugal sedimentation. When the mixed liquid to be separated enters the hydrocyclone tangentially from its periphery at a constant pressure, it generates intense three-dimensional, elliptical, highly rotating, shearing turbulence. Due to the size difference between coarse and fine particles, the majority of the coarse particles are discharged through the hydrocyclone's underflow outlet, while the majority of the fine particles are discharged through the overflow pipe, achieving the purpose of separation and classification.

[0003] When a cyclone is needed to separate raw coal, the raw coal is easily agglomerated due to its own characteristics or external factors. When the agglomerated raw coal enters the cyclone, it is very easy to cause uneven mixing of the raw coal and the heavy medium suspension, resulting in low separation accuracy of the cyclone and affecting the quality of the clean coal. Utility Model Content

[0004] The purpose of the utility model is to solve the deficiencies of the above-mentioned technology and provide a raw coal feeding and breaking up device.

[0005] To this end, the utility model provides a raw coal feeding and breaking up device, which is arranged on a feeding funnel. A multi-layer blade rack is arranged in the feeding funnel. Each blade rack is composed of a plurality of blades, and the blades on the upper and lower blade racks are staggered.

[0006] Preferably, a plurality of the blades are arranged in a circular array.

[0007] Preferably, the cross section of the blade is trapezoidal.

[0008] Preferably, the blade rack is fixedly mounted on the inner wall of the feeding funnel.

[0009] Preferably, the blade rack is detachably connected to the feeding funnel.

[0010] Preferably, an insert block is fixedly mounted on the outer end of each blade, a slot is provided on the inner side of the feed funnel, and the insert block is adapted to be plugged into the slot.

[0011] Preferably, the width of the inner side of the slot cross section is smaller than the width of the outer side thereof.

[0012] Preferably, the length of the slot in which the blade rack at the lower layer is installed is greater than the length of the slot in which the blade rack at the upper layer is installed.

[0013] The beneficial effects of the utility model are as follows: the utility model provides a raw coal feeding and breaking up device, which has the following beneficial effects.

[0014] (1) A multi-layer blade rack is arranged in the raw coal feeding funnel. The raw coal hits the blades and falls into the cyclone, so that the agglomerated raw coal entering is fully dispersed and better mixed with the suspension, thereby improving the sorting accuracy;

[0015] (2) The staggered arrangement of blades on the upper and lower blade racks can form different stirring and shearing force fields. When the raw coal lumps fall, they will be affected by the blades from different directions and angles, thus being more effectively broken up. That is, the upper blade rack can provide a preliminary breakup of the raw coal, while the lower blade rack further refines the breakup effect, ensuring that the raw coal enters the cyclone in a more uniform and finer particle form;

[0016] (3) The blade frame is detachably connected to the feed funnel, which facilitates timely replacement of worn blade frames, improves the efficiency of blade frame installation and disassembly, and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of the raw coal feed dispersing device in Example 1;

[0018] Figure 2 is a cross-sectional view of the feed funnel in Example 1;

[0019] Figure 3 is a schematic structural diagram of the blade rack in Example 1;

[0020] Figure 4 It is a structural schematic diagram of the raw coal feed scattering device in Example 2;

[0021] Figure 5 is a schematic structural diagram of the plug-in block in Example 2;

[0022] Figure 6 is a schematic diagram of the structure of the slot in Example 2;

[0023] Figure 7 Schematic diagram of the upper part of the feeding funnel in Example 2.

[0024] Markings in the figure: 1, feeding funnel; 2, blade rack; 21, first blade rack; 22, second blade rack; 3, blade; 4, insert; 5, slot; 51, first slot; 52, second slot. DETAILED DESCRIPTION

[0025] The present invention is further described below with reference to the accompanying drawings and specific embodiments to facilitate understanding of the present invention. The methods used in the present invention are conventional methods unless otherwise specified; the raw materials and devices used are conventional commercially available products unless otherwise specified.

[0026] Example 1:

[0027] like Figures 1 to 3 As shown, the utility model provides a raw coal feeding and breaking up device, which is arranged on a feeding funnel 1, and a multi-layer blade rack 2 is arranged in the feeding funnel 1, and the blade rack 2 is installed on the upper part of the feeding funnel 1. The number of the blade racks 2 in this embodiment is two, namely a first blade rack 21 and a second blade rack 22, and the first blade rack 21 is installed directly above the second blade rack 22. Each of the blade racks 2 is composed of a plurality of blades 3. The number of the blades 3 in this embodiment is 6, and the six blades 6 are fixedly connected around one end point thereof, and the blades 3 on the upper and lower blade racks 2 are staggered.

[0028] Furthermore, the plurality of blades 3 are arranged in a circular array so that the blades 3 are evenly arranged, thereby better breaking up the agglomerated raw coal.

[0029] Furthermore, the blades 3 have a trapezoidal cross-section. As they rotate, the changes in their shape and angle allow them to better adapt to and contact the coal, thereby more effectively breaking it up. Compared to blades with rectangular or circular cross-sections, trapezoidal blades generate greater shear and impact forces, helping to break up and disperse the coal. Furthermore, because the edges of the trapezoidal blades taper gradually, the coal is more easily dispersed and guided as it passes through, reducing the risk of blockage.

[0030] Furthermore, the blade rack 2 is fixedly mounted on the inner wall of the feeding funnel 1 by welding or other means.

[0031] The working principle of this embodiment is as follows:

[0032] After the agglomerated raw coal enters the feed hopper 1, it first falls onto the upper blade rack 2, which initially breaks up the raw coal. Then it falls onto the lower blade rack 2, which further refines the breaking up effect. The raw coal enters the cyclone in the form of more uniform and finer particles, and is then mixed with the suspension for sorting.

[0033] Example 2:

[0034] like Figures 4 to 7 As shown, based on Example 1, the utility model provides a raw coal feeding and breaking up device, wherein the blade frame 2 is detachably connected to the feeding funnel 1 .

[0035] Furthermore, an insert block 4 is fixedly installed on the outer end of each blade 3, and a slot 5 is opened on the inner side of the feed funnel 1. The insert block 4 is adapted to be plugged into the slot 5. The slot 5 includes a first slot 51 and a second slot 52. The first slot 51 is adapted to be plugged into the insert block 4 on the first blade rack 21, and the second slot 52 is adapted to be plugged into the insert block 4 on the second blade rack 22.

[0036] Furthermore, the width of the inner side of the cross section of the slot 5 is smaller than the width of the outer side. The slot 5 of this embodiment is a T-shaped structure, which prevents the blade rack 2 from falling when the clumped raw coal hits the blade rack 2, plays a better limiting role, and enhances the stability of the raw coal feeding and breaking up process.

[0037] Furthermore, the length of the slot 5 in which the lower blade rack 2 is installed is greater than the length of the slot 5 in which the upper blade rack 2 is installed. The bottom position of the slot 5 is fixed, and the blade rack 2 can be quickly installed in a specified position, which plays a better positioning and limiting role.

[0038] The working principle of this embodiment is as follows:

[0039] First, insert the second blade rack 22 along the second slot 52, and then insert the first blade rack 21 along the first slot 51. After the insertion is completed, repeat the operation of Example 1, and the raw coal can enter the cyclone in a more uniform and finer particle form, and then be mixed with the suspension for sorting.

[0040] In the description of the present invention, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inside", "outside", "back", "middle", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] However, the above description is merely a specific embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. Therefore, the replacement of equivalent components, or equivalent changes and modifications made according to the scope of protection of the patent of the present invention should still fall within the scope covered by the claims of the present invention.

Claims

1. A raw coal feed breaking device, which is arranged on a feed hopper (1), characterized in that: A multi-layer blade rack (2) is provided in the feeding funnel (1), each blade rack (2) is composed of a plurality of blades (3), and the blades (3) on the upper and lower blade racks (2) are staggered.

2. A raw coal feed scattering device according to claim 1, characterized in that: The plurality of blades (3) are arranged in a circular array.

3. A raw coal feed scattering device according to claim 2, characterized in that: The cross section of the blade (3) is trapezoidal.

4. The raw coal feed scattering device according to claim 1, characterized in that: The blade rack (2) is fixedly mounted on the inner wall of the feeding funnel (1).

5. The raw coal feed scattering device according to claim 1, characterized in that: The blade rack (2) is detachably connected to the feeding funnel (1).

6. The raw coal feed scattering device according to claim 5, characterized in that: An insert block (4) is fixedly mounted on the outer end of each blade (3), a slot (5) is provided on the inner side of the feed funnel (1), and the insert block (4) is adapted to be plugged into the slot (5).

7. The raw coal feed scattering device according to claim 6, characterized in that: The width of the inner side of the cross section of the slot (5) is smaller than the width of the outer side thereof.

8. The raw coal feed scattering device according to claim 6, characterized in that: The length of the slot (5) in which the lower blade rack (2) is installed is greater than the length of the slot (5) in which the upper blade rack (2) is installed.

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