Coal cleaning and dust removing device

Abstract

The application relates to a coal cleaning and dust removing device, belonging to the technical field of coal cleaning and dust removing, which comprises a dust removing pipe in a circular tubular structure, a mounting shaft located in the dust removing pipe and having a rotating shaft axis in line with the central line of the length direction of the dust removing pipe, a rotating motor, an output shaft of the rotating motor being coaxially fixedly connected with the mounting shaft and driving the mounting cylinder to rotate, a plurality of leaf fans fixedly connected in the circumferential direction of the mounting shaft, the leaf fans driving gas to flow along the length direction of the dust removing pipe, the initial end of the airflow being the initial end of the dust removing pipe, and the terminal end of the airflow being the terminal end of the dust removing pipe, and an adsorption layer fixedly connected to one side of the leaf fan close to the initial end of the dust removing pipe, and the application has the effect of improving dust removing stability.

Description

Technical Field

[0001] This application relates to the technical field of coal preparation dust removal, and in particular to a coal preparation dust removal device. Background Technology

[0002] Coal preparation, also known as coal washing, is the process of separating clean coal from raw coal to meet the quality requirements of users. A large amount of dust is generated during the coal preparation process. Coal preparation dust removal devices are used to filter impurities in the air during the coal preparation process. Common dust removal devices mainly include bag filters, electrostatic precipitators, and cyclone dust collectors.

[0003] The existing Chinese patent with publication number CN208098598U discloses a coal preparation dust removal device, including a dust discharge cylinder; a strip-shaped support is horizontally installed at the top opening of the dust discharge cylinder; a dust extraction fan is installed at the lower part of the support; a dust outlet is provided on one side wall of the middle part of the dust discharge cylinder; a dust collection bag is installed on the dust outlet; a fixed support is vertically installed on the cylinder wall opposite to the dust outlet; a dust extraction fan is installed on the fixed support; a water spray nozzle is installed upward on the bottom support of the dust discharge cylinder; a coal collection cylinder is connected to the bottom of the dust discharge cylinder; a coal collection mesh is horizontally installed inside the coal collection cylinder; and a water outlet is provided at the bottom of the coal collection cylinder.

[0004] Regarding the aforementioned technologies, the dust generated during the coal preparation process is blown into the dust collection bag by the dust exhaust fan. However, prolonged use may lead to dust blockage of the dust collection bag, resulting in weak dust removal stability. Summary of the Invention

[0005] To address the drawback of weak dust removal stability, this application provides a coal preparation dust removal device.

[0006] This application provides a coal preparation dust removal device, employing the following technical solution: It includes: a dust removal pipe, which is a circular tubular structure; a mounting shaft located inside the dust removal pipe, with its rotation axis collinear with the center line of the dust removal pipe's length direction; a rotating motor, the output shaft of which is coaxially and fixedly connected to the mounting shaft, driving the mounting shaft to rotate; multiple blades fixedly connected to the circumference of the mounting shaft; the blades driving gas to flow along the length of the dust removal pipe, with the airflow starting at the beginning of the dust removal pipe and ending at the end of the dust removal pipe; and an adsorption layer fixedly connected to the side of the blades near the beginning of the dust removal pipe.

[0007] By adopting the above technical solution, the air to be purified is connected to the beginning of the dust removal pipe during use. At this time, the rotating motor is started, and the rotating motor drives the mounting shaft and blades to rotate. During the rotation of the blades, the gas flows from the beginning to the end of the dust removal pipe. At the same time, the adsorption layer adsorbs the dust in the air. During use, the air is always in a circulating state, thereby improving the stability of dust removal.

[0008] Preferably, a dust collection cylinder is provided outside the dust removal pipe. The dust collection cylinder is a tubular structure with one end closed, and the closed end of the dust collection cylinder is close to the air outlet end of the dust removal pipe. A purification layer is fixedly connected to the inner wall of the dust collection cylinder. The dust removal pipe does not abut against the dust collection cylinder. An installation shaft passes through the dust collection cylinder and is rotatably connected to the dust collection cylinder. A rotating motor is fixedly connected to the dust collection cylinder. A stop ring is provided on the outer circumferential wall of the dust removal pipe. The stop ring is located outside the dust collection cylinder and does not abut against the dust collection cylinder. The outer diameter of the stop ring is larger than the outer diameter of the dust collection cylinder, and the outer circumferential surface of the stop ring is inclined to the side close to the end of the dust removal pipe.

[0009] By adopting the above technical solution, after the dust is purified by the adsorption layer, it is directed to the dust collection cylinder by the action of the blades. After being purified by the purification layer on the inner wall of the dust collection cylinder, the gas discharged from the dust removal pipe is purified again, which improves the dust purification effect. When the gas is purified again by the dust collection cylinder, the setting of the stop ring restricts the flow direction of the gas when it is discharged, reducing the impact on the gas at the inlet end of the dust removal pipe. At the same time, the purification of gas is achieved with limited floor space.

[0010] Preferably, a guide tube is provided inside the dust collection hopper. The guide tube has a conical structure, and the pointed end of the guide tube is inserted into the dust removal pipe.

[0011] By adopting the above technical solution, the airflow flows along the length of the dust removal pipe, and the airflow impacts the guide tube. Under the action of the guide tube, the airflow is dispersed and then flows into the dust collection tube circumferentially, thereby increasing the contact area between the gas and the dust collection tube, thus increasing the dust removal rate; and further improving the smoothness of gas flow.

[0012] Preferably, an anti-backflow ring is fixedly connected to the outer circumferential wall of the dust collector pipe outlet end, and the anti-backflow ring gradually tilts to the side away from the end of the dust collector pipe; and the anti-backflow ring does not abut against the dust collection cylinder.

[0013] By adopting the above technical solution, the anti-backflow ring is set to guide the airflow when the gas flows from the dust removal pipe to the dust collection cylinder. At the same time, when the flow rate of the gas in the dust removal pipe is high, the anti-backflow ring can prevent the airflow from forming vortices at the connection between the dust removal pipe and the dust collection cylinder, thereby improving the smoothness of gas flow.

[0014] Preferably, the dust collection hopper is fitted with an outer tube, which is fixedly connected to a stop ring.

[0015] By adopting the above technical solution, the outer tube allows the purified gas to flow out from the end of the dust collection cylinder. At this time, the gas increases the gas flow rate around the rotating motor, thereby achieving cooling of the rotating motor.

[0016] Preferably, the outer pipe is connected to a spraying component, which includes a water supply pipe, a spray head, and a water outlet cylinder. One end of the water supply pipe is closed, and the closed end of the water supply pipe passes through the outer pipe and is connected to the inner wall of the outer pipe. The spray head is fixedly connected to and communicates with the water supply pipe. The water outlet cylinder passes through the outer pipe and communicates with the outer pipe.

[0017] By adopting the above technical solution, when the gas is discharged from the outer pipe, the water supply pipe supplies water to the spray head, thereby further removing impurities contained in the discharged gas.

[0018] Preferably, the blades of adjacent fan blades are staggered.

[0019] By adopting the above technical solution, the blades of adjacent fans are staggered, which enables the gas containing dust to fully contact the adsorption layer; at the same time, it improves the adsorption stability.

[0020] Preferably, the outer pipe is connected to a manifold ring, which is fixedly connected to the inner wall of the outer pipe, and the manifold ring is located at the end of the outlet cylinder away from the stop ring.

[0021] By adopting the above technical solution, the manifold ring is designed to prevent the spray water from being blocked, while simultaneously allowing the gas to flow together.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] Connect the air to be purified to the beginning of the dust collector pipe. Start the rotating motor, which drives the mounting shaft and blades to rotate. During the rotation of the blades, the air flows from the beginning to the end of the dust collector pipe. At the same time, the adsorption layer adsorbs dust in the air. During use, the air is always in a circulating state, thereby improving the stability of dust removal.

[0024] The airflow flows along the length of the dust collection pipe and impacts the guide tube. Under the action of the guide tube, the airflow is dispersed and then flows into the dust collection cylinder circumferentially, thereby increasing the contact area between the gas and the dust collection cylinder and thus increasing the dust removal rate; it also further improves the smoothness of gas flow.

[0025] When the gas is discharged from the outer pipe, the water supply pipe supplies water to the spray head to further remove impurities contained in the discharged gas. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0027] Figure 2 This is a cross-sectional view to show the blade fan;

[0028] Figure 3 yes Figure 2 A magnified view of part A in the diagram.

[0029] In the diagram, 1. Dust removal pipe; 11. Stop ring; 12. Anti-backflow ring; 2. Mounting shaft; 21. Rotating motor; 3. Fan blade; 31. Adsorption layer; 4. Dust collection cylinder; 41. Guide cylinder; 42. Purification layer; 5. Outer pipe; 6. Spray component; 61. Water supply pipe; 62. Spray head; 63. Water outlet cylinder; 7. Combination ring; 8. Mounting ring; 81. Mounting bolt; 9. Connecting component; 91. Limiting rod; 92. Limiting ring; 93. Support rod; 94. Locking rod. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0031] This application discloses a coal preparation dust removal device.

[0032] refer to Figure 1 and Figure 2 The coal preparation dust removal device includes a dust removal pipe 1, an installation shaft 2, a rotating motor 21, a fan blade 3, a dust collection cylinder 4, and an adsorption layer 31. The dust removal pipe 1 is a circular tubular structure, and the gas carrying dust flows along the length of the dust removal pipe 1. The beginning of the airflow is the beginning of the dust removal pipe 1, and the end of the airflow is the end of the dust removal pipe 1. The dust collection cylinder 4 is a circular tubular structure closed at one end. The dust collection cylinder 4 is coaxially sleeved outside the dust removal pipe 1, and the closed end of the dust collection cylinder 4 is close to the outlet end of the dust removal pipe 1. The dust removal pipe 1 does not abut against the dust collection cylinder 4. A purification layer 42 is fixedly connected to the inner wall of the dust collection cylinder 4. The installation shaft 2 is located inside the dust removal pipe 1, and the rotation axis of the installation shaft 2 is collinear with the center line of the length direction of the dust removal pipe 1. The installation shaft 2 passes through the dust collection cylinder 4 and is rotatably connected to the dust collection cylinder 4. The output shaft of the rotating motor 21 is coaxially fixedly connected to the installation shaft 2, and the rotating motor 21 drives the installation shaft 2 to rotate. The rotating motor 21 is fixedly connected to the dust collection cylinder 4.

[0033] refer to Figure 2 and Figure 3 The blades 3 are fixedly connected to the mounting shaft 2 in the circumferential direction. Multiple blades 3 are provided, and all multiple blades 3 are located inside the dust removal pipe 1. The blades 3 are equidistantly distributed along the length direction of the mounting shaft 2. The blades 3 drive the gas to flow along the length direction of the dust removal pipe 1. The blades of adjacent blades 3 are staggered. The adsorption layer 31 is fixedly connected to the side of the blades 3 near the beginning of the dust removal pipe 1.

[0034] refer to Figure 2 and Figure 3 A stop ring 11 is fitted around the outer wall of the dust collection pipe 1. The stop ring 11 is located outside the dust collection cylinder 4 and does not abut against the dust collection cylinder 4. The outer diameter of the stop ring 11 is larger than the inner diameter of the dust collection cylinder 4, and the outer circumference of the stop ring 11 is inclined to the side near the end of the dust collection pipe 1. That is, the stop ring 11 gradually widens from the side near the beginning of the dust collection pipe 1 to the side away from the beginning of the dust collection pipe 1.

[0035] In use, the air to be purified is connected to the beginning of the dust collector pipe 1. The rotating motor 21 is then started, driving the mounting shaft 2 and the fan blades 3 to rotate. During the rotation of the fan blades 3, the gas flows from the beginning to the end of the dust collector pipe 1. Simultaneously, the adsorption layer 31 adsorbs dust particles from the air. The staggered distribution of the fan blades 3 ensures that the dust-laden gas fully contacts the adsorption layer 31, improving adsorption stability and ensuring continuous airflow during use. After being purified by the adsorption layer 31, the dust is directed to the dust collection cylinder 4 by the fan blades 3. After further purification by the purification layer 42 on the inner wall of the dust collection cylinder 4, the gas discharged from the dust collector pipe 1 is purified again, improving the dust purification effect. When the gas is purified again by the dust collection cylinder 4, the stop ring 11 restricts the flow direction of the discharged gas, reducing the impact on the gas at the inlet of the dust collector pipe 1. This achieves gas purification within a limited footprint, enhancing dust collection stability.

[0036] refer to Figure 2 and Figure 3 The dust collection cylinder 4 is fitted with an outer tube 5, which is fixedly connected to the stop ring 11. The outer tube 5 is fixedly connected to the outer circumferential surface of the stop ring 11, and the end of the outer tube 5 facing away from the stop ring 11 is coplanar with the dust collection cylinder 4. The outer tube 5 allows the purified gas to flow out from the end of the dust collection cylinder 4. At this time, the gas increases the gas flow rate around the rotating motor 21, thereby cooling the rotating motor 21.

[0037] refer to Figure 2 and Figure 3 A guide tube 41 is installed inside the dust collection cylinder 4. The guide tube 41 has a conical structure, and its pointed end is inserted into the dust collection pipe 1. The convex surface of the guide tube 41 does not abut against the dust collection pipe 1. Along the radial direction of the dust collection pipe 1, the distance between the convex surface of the guide tube 41 and the dust collection pipe 1 is equal to the distance between the outer diameter of the dust collection pipe 1 and the inner wall of the dust collection cylinder 4. The airflow flows along the length of the dust collection pipe 1. The airflow impacts the guide tube 41, and under the action of the guide tube 41, the airflow is dispersed and then flows into the dust collection cylinder 4 circumferentially, thereby increasing the contact area between the gas and the dust collection cylinder 4, thus increasing the dust removal rate; and further improving the smoothness of gas flow.

[0038] refer to Figure 2 and Figure 3 An anti-backflow ring 12 is fixedly connected to the outer wall of the outlet end of the dust removal pipe 1. The anti-backflow ring 12 gradually tilts away from the end of the dust removal pipe 1, that is, the anti-backflow ring 12 gradually narrows from the side close to the end of the dust removal pipe 1 to the side away from the end of the dust removal pipe 1; and the anti-backflow ring 12 does not abut against the dust collection cylinder 4.

[0039] refer to Figure 2The outer pipe 5 is connected to a spray element 6, which is located between the outer pipe 5 and the dust collection cylinder 4. Specifically, the spray element 6 includes a water supply pipe 61, a spray head 62, and a water outlet cylinder 63. One end of the water supply pipe 61 is closed, and the closed end of the water supply pipe 61 passes through the outer pipe 5 and is connected to the inner wall of the outer pipe 5. Specifically, the water supply pipe 61 is arranged in a ring with the axis of the outer pipe 5 as the center line. The open end of the water supply pipe 61 is connected to an external high-pressure water source. The spray head 62 is fixedly connected to and communicates with the water supply pipe 61. Multiple spray heads 62 are provided, and the multiple spray heads 62 are equidistantly distributed along the circumference of the water supply pipe 61, and the opening of the spray head 62 faces the dust collection cylinder 4. The water outlet cylinder 63 passes through the outer pipe 5 and is fixedly connected to the outer pipe 5. The water outlet cylinder 63 is used to discharge the dust removal water in the outer pipe 5.

[0040] During use, when the gas flows from the dust removal pipe 1 to the dust collection cylinder 4, the anti-backflow ring 12 guides the airflow. Simultaneously, when the gas flow rate within the dust removal pipe 1 is high, the anti-backflow ring 12 prevents the formation of eddies at the connection between the dust removal pipe 1 and the dust collection cylinder 4. When the gas is discharged from the outer pipe 5, the water supply pipe 61 supplies water to the spray head 62, further removing impurities from the discharged gas. This improves the gas purification effect and enhances the smoothness of gas flow.

[0041] refer to Figure 2 and Figure 3 The outer pipe 5 is connected to a manifold ring 7, which is fixedly connected to the inner wall of the outer pipe 5 and located at the end of the water outlet cylinder 63 away from the stop ring 11. The manifold ring 7 is constricted from the end near the stop ring 11 to the end away from the stop ring 11. A mounting ring 8 is fixedly connected to the side of the manifold ring 7 near the stop ring 11, and a mounting bolt 81 is provided between the mounting ring 8 and the outer pipe 5. The mounting bolt 81 is threadedly connected to the mounting ring 8 and the outer pipe 5. The manifold ring 7 is designed to stop the spray water and simultaneously facilitate the collection of gas.

[0042] refer to Figure 2 and Figure 3Specifically, a connector 9 is provided between the outer tube 5 and the dust collection cylinder 4. The connector 9 includes a limiting rod 91, a limiting ring 92, a support rod 93, and a locking rod 94. The limiting rod 91 is vertically fixed to the inner wall of the outer tube 5 and is located at the end of the outer tube 5 near the stop ring 11. Multiple limiting rods 91 are provided and are evenly distributed around the circumference of the outer tube 5. The limiting ring 92 is fixedly connected to the outer wall of the dust collection cylinder 4 and abuts against the limiting rod 91. The limiting ring 92 is located on the side of the limiting rod 91 away from the stop ring 11. The support rod 93 is vertically fixed to the outer wall of the dust collection cylinder 4 and is located on the side of the water outlet cylinder 63 away from the stop ring 11. The locking rod 94 is vertically fixed to the end of the dust collection cylinder 4 away from the stop ring 11. Multiple locking rods 94 are provided and are evenly distributed around the circumference of the dust collection cylinder 4. The locking rod 94 abuts against the mounting ring 8, and the locking rod 94 is located at the end of the mounting ring 8 near the stop ring 11.

[0043] When in use, if it is necessary to clean the fan blades 3, adsorption layer 31, dust collection cylinder 4, and purification layer 42, simply tighten the mounting bolt 81. The mounting bolt 81 will cause the mounting ring 8 to disengage from the outer tube 5. At this time, drag the dust collection cylinder 4 outward to remove the fan blades for cleaning. When reinstalling after cleaning, insert the dust collection cylinder 4 into the outer tube 5 and push the dust collection cylinder 4 until the limiting ring 92 abuts against the limiting rod 91. Then, use the mounting bolt 81 and the mounting ring 8 to limit the locking rod 94, thereby completing the disassembly and assembly of the dust collection cylinder 4. This improves the stability of removing impurities from the air and makes it convenient for staff to clean impurities.

[0044] The implementation principle of the coal preparation dust removal device in this embodiment is as follows: During use, the rotating motor 21 is started, driving the blade fan 3 to rotate. The rotation of the blade fan 3 draws dust-laden gas into the dust removal pipe 1. During the rotation of the blade fan 3, the adsorption layer 31 adsorbs dust from the air. Simultaneously, the airflow is diverted by the guide tube 41 and flows into the dust collection cylinder 4, where the adsorption layer 31 adsorbs dust, thus achieving further purification of the air. Finally, after dust removal by the spray element 6, the air is discharged through the outer pipe 5, thereby improving the stability of dust removal. When the coal preparation dust removal device needs cleaning after prolonged use, simply unscrew the mounting bolts 81 to separate the dust collection cylinder 4 from the outer pipe 5, achieving convenience for operators.

[0045] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A coal cleaning and dust removing device, characterized in that: The utility model provides a dust removal device, including: A dust removal pipe (1) is a circular tube structure; An installation shaft (2) is located in the dust removal pipe (1), and the rotation axis of the installation shaft (2) is collinear with the length direction center line of the dust removal pipe (1); A rotating motor (21) is coaxially fixedly connected with the output shaft of the rotating motor (21) and the installation shaft (2), and drives the installation shaft (2) to rotate; A plurality of leaf fans (3) are fixedly connected to the circumferential direction of the installation shaft (2), and the leaf fans (3) drive gas to flow along the length direction of the dust removal pipe (1), wherein the initial end of the gas flow is the initial end of the dust removal pipe (1), and the terminal end of the gas flow is the terminal end of the dust removal pipe (1); An adsorption layer (31) is fixedly connected to one side of the leaf fan (3) close to the initial end of the dust removal pipe (1); The dust removal pipe (1) is sleeved with a dust setting cylinder (4), the dust setting cylinder (4) is a tubular structure with one end closed, and the closed end of the dust setting cylinder (4) is close to the gas outlet end of the dust removal pipe (1); a purification layer (42) is fixedly connected to the inner wall of the dust setting cylinder (4); the dust removal pipe (1) is not in abutment with the dust setting cylinder (4); the installation shaft (2) penetrates the dust setting cylinder (4) and is rotationally connected with the dust setting cylinder (4), and the rotating motor (21) is fixedly connected with the dust setting cylinder (4); A stop ring (11) is sleeved on the circumferential outer wall of the dust removal pipe (1); the stop ring (11) is located outside the dust setting cylinder (4), and the stop ring (11) is not in abutment with the dust setting cylinder (4); the outer diameter of the stop ring (11) is greater than the outer diameter of the dust setting cylinder (4), and the outer peripheral surface of the stop ring (11) is inclined towards the side close to the terminal end of the dust removal pipe (1), that is, the stop ring (11) gradually presents a flared shape from the side close to the initial end of the dust removal pipe (1) to the side away from the initial end of the dust removal pipe (1); The dust setting cylinder (4) is provided with a flow guide cylinder (41), the flow guide cylinder (41) is a conical structure, and the pointed end of the flow guide cylinder (41) is inserted into the dust removal pipe (1); the convex surface of the flow guide cylinder (41) is not in abutment with the dust removal pipe (1); along the radial direction of the dust removal pipe (1), the distance between the convex surface of the flow guide cylinder (41) and the dust removal pipe (1) is equal to the distance between the outer diameter of the dust removal pipe (1) and the inner wall of the dust setting cylinder (4); The gas outlet end of the dust removal pipe (1) is fixedly connected with an anti-backflow ring (12) on the circumferential outer wall, the anti-backflow ring (12) is gradually inclined towards the side away from the terminal end of the dust removal pipe (1); and the anti-backflow ring (12) is not in abutment with the dust setting cylinder (4); The dust setting cylinder (4) is sleeved with an outer pipe (5), and the outer pipe (5) is fixedly connected with the stop ring (11); The outer pipe (5) is connected with a spraying member (6), and the spraying member (6) comprises a water supply pipe (61), a spraying head (62) and a water outlet cylinder (63); one end of the water supply pipe (61) is closed, and the closed end of the water supply pipe (61) penetrates the outer pipe (5) and is connected to the inner wall of the outer pipe (5); the spraying head (62) is fixedly connected with the water supply pipe (61) and is in communication; and the water outlet cylinder (63) penetrates the outer pipe (5) and is in communication with the outer pipe (5). The outer tube (5) is connected with a collecting ring (7), the collecting ring (7) is fixedly connected to the inner wall of the outer tube (5), and the collecting ring (7) is located at the end of the water outlet cylinder (63) away from the stop ring (11), and the collecting ring (7) is in a conical shape from the end close to the stop ring (11) to the end away from the stop ring (11).

2. The coal cleaning and dust removing device according to claim 1, characterized in that: The adjacent fan blades of the leaf fan (3) are staggered.

Images