Dust removal equipment

Abstract

This utility model provides a dust removal device, belonging to the field of chemical equipment technology. It includes a dust removal cylinder unit, comprising a straight dust removal cylinder, a conical cylinder, and a material hopper at the bottom, connected sequentially from top to bottom. The straight dust removal cylinder is equipped with an inlet pipe and an outlet pipe, and a baffle plate is installed inside the inlet pipe to prevent material blockage. The inner wall of the conical cylinder has protruding structures to reduce airflow velocity and prolong its residence time. The dust removal device provided by this utility model can effectively solve the problem of low separation efficiency caused by internal blockage in cyclone dust collectors, improve dust removal and separation effects, increase the production efficiency of solid materials, reduce energy loss, and lower enterprise production costs, thereby enhancing the competitiveness and influence of products in the market to a certain extent.

Description

Technical Field

[0001] This utility model belongs to the field of chemical equipment technology, specifically relating to a dust removal device. Background Technology

[0002] In chemical production, after drying, solid sodium cyanide is settled in a cyclone dust collector under the action of induced draft. After the solid material is compacted and formed, the finished product is produced. Some solid material is carried in the gas and enters the gas scrubbing tower for recovery. During this process, due to material blockage in the cyclone dust collector, ineffective settling often occurs, resulting in a large amount of solid material directly entering the gas scrubbing tower through the induced draft. This causes excessive sodium cyanide content in the gas scrubbing tower, leading to waste of solid sodium cyanide. At the same time, the treatment of the gas scrubbing liquid also greatly increases the energy consumption of solid sodium cyanide production, increases the company's production costs, and significantly reduces the company's market competitiveness. Utility Model Content

[0003] This utility model provides a dust removal device, which aims to solve the problems of low solid material separation efficiency caused by internal blockage of cyclone dust collectors, resulting in waste of solid sodium cyanide, low product yield, and high energy loss.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a dust removal device is provided, comprising: a dust removal cylinder unit, the dust removal cylinder unit comprising a dust removal straight cylinder, a conical cylinder and a material hopper located at the bottom, connected sequentially from top to bottom; the dust removal straight cylinder is provided with an air inlet pipe and an air outlet pipe, the air inlet pipe is provided with a baffle plate for preventing material blockage; the inner wall of the conical cylinder is provided with a protruding structure for reducing airflow speed and prolonging its residence time.

[0005] In one possible implementation, the baffle plate extends in a wavy, curved manner along the centerline of the air inlet duct.

[0006] In one possible implementation, the two sides of the baffle plate are respectively connected to the air inlet duct via a rotating swing mechanism; the rotating swing mechanism includes an electric push rod installed on the air inlet duct, the lower end of the electric push rod is hinged to the two sides of the baffle plate, and the two hinge points are in the same plane as the center line of the air inlet duct; the two electric push rods extend and retract to push the baffle plate to swing back and forth about the center line of the air inlet duct as an axis to turbulent the airflow.

[0007] In one feasible manner, the angle range α of the baffle plate swinging is 15°-45°.

[0008] In one possible implementation, the protrusion structure includes at least two rings of toothed protrusions that surround the inner wall of the conical cylinder and are distributed in a toothed pattern, with adjacent rings of toothed protrusions being staggered.

[0009] In one possible implementation, the conical cylinder is a jacketed structure with an annular cavity inside; the outer wall of the conical cylinder has an air inlet hole communicating with the annular cavity; and the inner wall of the conical cylinder has an air outlet communicating with the annular cavity.

[0010] In one possible implementation, the air inlets are located between two adjacent rings of toothed bosses and are evenly distributed along the circumferential direction of the inner wall of the conical cylinder.

[0011] In one feasible approach, the walls of the air inlet are formed into a frustum shape, so that the outlet diameter of the air inlet gradually decreases.

[0012] In one possible implementation, a vibrating screening unit is also included, which is located inside the dust removal cylinder; the vibrating screening unit is located below the air outlet duct and above the air inlet duct.

[0013] In one possible implementation, the vibrating screening unit includes a vibrating screen and a cross supporting the vibrating screen, the four ends of the cross supporting the inner wall of the dust collection cylinder.

[0014] Compared with the prior art, the dust removal device provided by this utility model has the following advantages: By setting baffles in the air inlet pipe, the material entering the air inlet pipe is guided and stirred to a certain extent, so that the direction of local flow of the material changes when the material passes through the air inlet pipe, making the material concentration more uniform and thus avoiding material blockage; At the same time, a protruding structure is set in the conical cylinder at the bottom of the dust removal cylinder unit. After the dried material enters the dust removal cylinder along the airflow, it is thrown against the cylinder wall by the centrifugal force generated by the rotating airflow and gradually slides into the conical cylinder. When it encounters the protruding structure set in the inner wall of the conical cylinder, it is blocked and the airflow rotation speed is reduced, which can also extend the residence time of the dried material in the dust removal device, allowing the solid material to settle for more time, further improving the separation efficiency, thereby reducing the content of solid material in the gas and avoiding the risk of solid material being discharged from the air outlet pipe with the airflow. This design not only avoids material blockage but also improves the sedimentation and separation of solid materials, increases the yield of solid sodium cyanide products, avoids waste of solid materials, and reduces energy consumption in later processing, thereby reducing the company's production costs and enhancing its market competitiveness. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the dust removal device provided in an embodiment of the present utility model; Figure 2 This is a schematic diagram of the boss structure provided in an embodiment of the present utility model; Figure 3 This is a front view structural schematic diagram of the rotary swing mechanism provided in an embodiment of the present utility model; Figure 4 A schematic diagram of the structure of the rotary swing mechanism driving the baffle plate to swing according to an embodiment of this utility model; Figure 5 The diagram shows the structure of the baffle plate provided in the air inlet duct from different angles according to the embodiment of the present utility model. Figure (a) is the front view, and Figure (b) is the side view of Figure (a). Figure 6 This is a schematic diagram of the air blowing hole provided in an embodiment of the present utility model; Figure 7 This is a schematic diagram of the structure of the vibrating screening unit provided in an embodiment of the present invention; Explanation of reference numerals in the attached figures: 1. Electric push rod; 2. Air inlet duct; 3. Baffle plate; 4. Dust removal cylinder; 5. Conical cylinder; 6. Material silo; 7. Raised structure; 8. Air blowing hole; 9. Steam duct; 10. Vibrating screen; 11. Vibrating motor; 12. Air outlet duct; 13. Cross; 14. Toothed boss; 15. Support plate. Detailed Implementation

[0016] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0017] Please see Figures 1 to 7 The dust removal device provided by this utility model will now be described. The dust removal device includes: a dust removal cylinder unit, which includes a dust removal straight cylinder 4, a conical cylinder 5, and a material bin 6 at the bottom, connected sequentially from top to bottom; the dust removal straight cylinder 4 is provided with an air inlet pipe 2 and an air outlet pipe 12, and a baffle plate 3 for preventing material blockage is provided in the air inlet pipe 2; the inner wall of the conical cylinder 5 is provided with a protruding structure 7 for reducing the airflow speed and prolonging its residence time.

[0018] Compared with the prior art, the dust removal device provided by this utility model has the following advantages: By setting the baffle 3 in the air inlet pipe 2, the material entering the air inlet pipe 2 is guided and stirred to a certain extent, so that the direction of local flow of the material changes when it passes through the air inlet pipe 2, making the material concentration more uniform and thus avoiding material blockage; At the same time, a protruding structure 7 is set in the conical cylinder 5 at the bottom of the dust removal cylinder unit. After the dried material enters the dust removal cylinder 4 along the airflow, it is thrown towards the cylinder wall by the centrifugal force generated by the rotating airflow and gradually slides into the conical cylinder 5. When it encounters the protruding structure 7 set in the inner wall of the conical cylinder 5, it is blocked and the airflow rotation speed is reduced, which can also extend the residence time of the dried material in the dust removal device, so that the solid material has more time to settle, further improving the separation efficiency, thereby reducing the content of solid material in the gas and avoiding the risk of solid material being discharged from the air outlet pipe 12 with the airflow. This design not only avoids material blockage but also improves the sedimentation and separation of solid materials, increases the yield of solid sodium cyanide products, avoids waste of solid materials, and reduces energy consumption in later processing, thereby reducing the company's production costs and enhancing its market competitiveness.

[0019] In this application, the dust collector cylinder 4 includes multiple cylindrical sections, which are connected sequentially from bottom to top by a stop joint, facilitating disassembly and assembly. For example, for one cylindrical section, a contraction step smaller than its normal diameter is provided at the lower end, the outer diameter of the upper end is the same as its normal diameter, and the inner diameter is adapted to the contraction step at its lower end, so that the multiple cylindrical sections can overlap and fit together.

[0020] Optionally, flanges are installed at both the top and bottom ends of each cylindrical section, and the cylindrical sections are detachably connected together by flanges and bolts. The number of cylindrical sections is 2-4, and the connection process ensures good airtightness and no external leakage, while also facilitating disassembly for cleaning and maintenance.

[0021] The bottommost material bin 6 is cone-shaped and is used to collect settled solid materials to facilitate the discharge of solid materials.

[0022] Explained, overall yield refers to the ratio between the total amount of raw materials input and the total amount of products actually generated in a chemical or industrial production process. Specifically, overall yield can be calculated using the following formula: Yield = Actual qualified output / Theoretical output × 100%, or Yield = Amount of raw material used to produce the target product / Amount of raw material fed × 100%. Yield is an important indicator of production process efficiency, usually expressed as a percentage by mass or volume. A higher yield indicates that more of the raw material is effectively utilized to produce the target product.

[0023] In some embodiments, see Figure 1As shown, the baffle plate 3 extends in a wavy, curved shape along the centerline of the air inlet duct 2. Since the air inlet direction is consistent with the centerline of the air inlet duct 2, the baffle plate 3 also curves along the air inlet direction, causing the material to enter the dust removal cylinder 4 along the curvature of the baffle plate 3 under the influence of the airflow. In this way, as the material moves forward, it will be disturbed by the baffle plate 3, which has a mixing function and can prevent the material from clogging the air inlet duct 2.

[0024] To effectively solve the problem of material clogging in the air inlet pipe 2 and avoid clogging caused by uneven material concentration during feeding, this application also disturbs the material by swinging the baffle plate 3. In this way, the material is disturbed by the bending structure of the baffle plate 3 in the direction of material flow, and in the direction perpendicular to the material flow, the linear path of the material flow can be changed by the rotation and reciprocating swing of the baffle plate 3 in the air inlet pipe 2, thereby improving the uniformity of material concentration.

[0025] For example, the material flow direction at different locations can be divided into several channels. By swinging the baffle plate 3, the material in the first channel can be moved into the second channel to continue flowing. As the baffle plate 3 swings back and forth, the material continuously switches channels in the flow direction, thereby avoiding material blockage caused by different material concentrations.

[0026] See Figure 1 , Figures 3 to 6 As shown, the specific implementation of the oscillation of the baffle plate 3 is achieved by setting a rotating oscillation mechanism on both sides of the baffle plate 3. The rotating oscillation mechanism includes an electric push rod 1 installed on the air inlet duct 2. The lower end of the electric push rod 1 is hinged to both sides of the baffle plate 3, and the two hinge points are on the same plane as the center line of the air inlet duct 2. The two electric push rods 1 extend and retract to push the baffle plate 3 to oscillate back and forth around the center line of the air inlet duct 2 to turbulent the airflow.

[0027] Support plates 15 are provided on both sides of the air inlet duct 2. The electric push rod 1 is installed on the support plate 15. The electric push rod 1 extends downward into the air inlet duct 2 and pushes the baffle plate 3 to swing back and forth.

[0028] In some embodiments, see Figure 4 As shown, the swing angle 'a' of the baffle 3 is 15°-45°. The swing angle of the baffle 3 can be controlled by adjusting the extension length of the electric push rod 1, and the swing angle can be adjusted at any time according to different material concentrations.

[0029] A pressure sensor is installed on the electric push rod 1. The rotation angle of the baffle plate 3 is adjusted according to the data fed back by the pressure sensor, which facilitates remote control and adjustment and can minimize the intensity of manual labor.

[0030] In some embodiments, see Figure 1 and Figure 2 The protruding structure 7 includes at least two rings of toothed protrusions 14 arranged in a toothed pattern around the inner wall of the conical cylinder 5, with adjacent rings of toothed protrusions 14 staggered. This arrangement creates layers of obstruction for the material, effectively reducing the airflow rotation speed and extending the residence time of the dried material in the dust removal device by altering the material's movement trajectory and collision energy absorption. This allows the solid material to settle effectively, significantly improving the gas-solid separation effect.

[0031] See Figure 2 The illustration in this application shows three concentric rings of toothed bosses 14, with the distance L between two adjacent rings of toothed bosses 14 being 500-600mm. The vertical distance h from the highest point of the toothed boss 14 to the inner wall of the conical cylinder 5 is 200-250mm; at the same layer height or within the same ring, the center distance between two adjacent toothed bosses 14 is 300mm-400mm.

[0032] Optionally, the toothed boss 14 is frustum-shaped or frustum-shaped, for example, a quadrangular frustum.

[0033] In some embodiments, see Figure 1 As shown, the conical cylinder 5 has a jacketed structure with an annular cavity inside. The outer wall of the conical cylinder 5 has an air inlet hole communicating with the annular cavity. The inner wall of the conical cylinder 5 has an air blowing hole 8 communicating with the annular cavity. The air inlet hole is connected to an air supply device. Steam or compressed air enters the annular cavity and is blown into the conical cylinder 5 through the air blowing hole 8, agitating the material. This causes the solid material to settle during collisions, preventing material accumulation on the inner wall of the conical cylinder 5, improving the overall yield of solid material, increasing material utilization and productivity, reducing material loss, and thus lowering the company's production costs.

[0034] Optionally, multiple steam pipes 9 are provided in the annular cavity, and steam pipes 9 are provided with air outlets that are connected to air blowing holes 8.

[0035] In some embodiments, see Figure 1 and Figure 2 The air blowing holes 8 are located between two adjacent toothed protrusions 14 and are evenly distributed along the circumferential direction of the inner wall of the conical cylinder 5.

[0036] In some embodiments, see Figure 2 and Figure 6 The walls of the air inlet 8 are formed into a frustum shape, so that the outlet diameter of the air inlet 8 gradually decreases. This design can effectively enhance the pressure of the airflow blown by steam, prevent the problem of low purging pressure caused by airflow diffusion, and ensure the unobstructed flow of the air inlet 8.

[0037] The diameter ratio of the bottom surface of the frustum-shaped air hole 8 to the top surface of the air hole 8 is 1.5-2.0:1.0, which ensures that the airflow has a certain pressure and guarantees the smooth flow of the air hole 8.

[0038] See Figure 1 and Figure 7 As shown, the dust removal device provided by this utility model also includes a vibrating screening unit, which is located inside the dust removal cylinder 4. The vibrating screening unit is located below the outlet duct 12 and above the inlet duct 2. In this application, the outlet duct 12 is located at the top of the dust removal cylinder 4, and the inlet duct 2 is located on the upper side of the dust removal cylinder 4. The separated gas also carries some solid material. When passing through the vibrating screening unit, larger solid particles are blocked and change direction when colliding with the vibrating screening unit, falling back into the dust removal cylinder 4. The gas is discharged from the outlet duct 12 through the vibrating screening unit. By screening the gas to be discharged, solid material can be prevented from being discharged directly from the outlet duct 12, reducing the content of solid material in the gas, thereby reducing the energy consumption of the gas scrubbing tower in treating solid material, reducing the waste of solid material, and thus improving the overall yield of solid material products.

[0039] Because some of the solid material will adhere to the vibrating screen unit after being blocked, clogging the screen holes and preventing gas from escaping, it will also reduce the processing efficiency and effect of the device. Therefore, the vibrating screen unit has the functions of vibration and screening, which can vibrate the solid material attached to the vibrating screen 10 down, so that it falls back into the dust removal cylinder 4 and finally settles into the material bin 6, thereby improving the product yield and reducing waste.

[0040] In some embodiments, see Figure 7 As shown, the vibrating screening unit includes a vibrating screen 10 and a cross 13 supporting the vibrating screen 10. The four ends of the cross 13 are supported on the inner wall of the dust removal cylinder 4.

[0041] The vibrating motor 11 can be installed at the bottom of the vibrating screen 10 or on the dust removal cylinder 4.

[0042] See Figure 1 The vertical distance H between the vibrating screen 10 and the top of the dust removal cylinder 4 is 500mm; the vibrating screen 10 is fixed by the crossbar 13. A pressure sensor is installed on the vibrating screen 10 to ensure stable airflow during normal production and to promptly report and clear pressure fluctuations after material blockage.

[0043] The working process of the dust removal device provided in this application is as follows: The dried material enters the air inlet duct 2 under the action of the induced draft. The baffle 3 inside is rotated at an angle by the electric push rod 1 to adapt to changes in the production conditions at any time, avoid material blockage caused by different material concentrations, and ensure that the airflow rotates evenly in the dust removal cylinder 4 to maintain the best separation efficiency.

[0044] The dried material enters the dust removal cylinder 4 along the airflow. Through the centrifugal force generated by the rotating airflow, the material is thrown against the cylinder wall. After passing through multiple dust removal cylinders 4, it slides into the conical cylinder 5. Through the deceleration of multiple rings of toothed protrusions 14, the rotation speed of the airflow is reduced and the residence time of the dried material in the cylinder is extended, further improving the separation efficiency.

[0045] Subsequently, the solid material settles into the material silo 6, while the airflow is discharged from the outlet duct 12 through the vibrating screen 10 and enters the subsequent air scrubbing tower system. The pressure sensor obtains information on the blockage status based on the pressure change of the vibrating screen 10. Then, based on the feedback from the pressure sensor, the vibrating motor 11 vibrates the vibrating screen 10 to shake off and clean the material attached to the vibrating screen 10. This can effectively solve the problem of low separation efficiency caused by blockage of the vibrating screen 10, further improve the separation effect of dust removal, and increase the production efficiency of solid powder.

[0046] It should be noted that the installation and fixing methods of the pressure sensors for detecting the baffle plate 3 and the vibrating screen 10 are common knowledge, and this article will not describe the installation position and fixing method of the pressure sensors.

[0047] The dust removal device provided by this utility model can effectively solve the problem of low separation efficiency caused by internal blockage of cyclone dust collectors compared with the prior art, improve the dust removal and separation effect, increase the production efficiency of solid materials, reduce a lot of energy consumption loss, reduce the production cost of enterprises, and thus improve the competitiveness and influence of products in the market to a certain extent.

[0048] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dust removal device, characterized in that, include: The dust collector cylinder unit includes a dust collector straight cylinder (4), a conical cylinder (5), and a material hopper (6) connected sequentially from top to bottom; the dust collector straight cylinder (4) is provided with an air inlet pipe (2) and an air outlet pipe (12), and the air inlet pipe (2) is provided with a baffle plate (3) to prevent material blockage; the inner wall of the conical cylinder (5) is provided with a protruding structure (7) to reduce the airflow speed and prolong its residence time.

2. The dust extraction device of claim 1, wherein The baffle (3) extends in a wavy shape along the center line of the air inlet duct (2).

3. The dust extraction device of claim 2, wherein The two sides of the baffle plate (3) are respectively connected to the air inlet pipe (2) through a rotating swing mechanism; the rotating swing mechanism includes an electric push rod (1) installed on the air inlet pipe (2), the lower end of the electric push rod (1) is hinged to the two sides of the baffle plate (3), and the two hinge points are in the same plane as the center line of the air inlet pipe (2); the two electric push rods (1) extend and retract to push the baffle plate (3) to swing back and forth about the center line of the air inlet pipe (2) to cause airflow disturbance.

4. The dust extraction device of claim 3, wherein The angle range a of the baffle plate (3) swinging is 15°-45°.

5. The dust extraction device of claim 1, wherein The protruding structure (7) includes at least two toothed protrusions (14) that surround the inner wall of the conical cylinder (5) and are distributed in a toothed pattern, with the two adjacent toothed protrusions (14) arranged in a staggered manner.

6. The dust extraction device of claim 5, wherein The conical cylinder (5) has a jacket structure and an annular cavity inside; the outer wall of the conical cylinder (5) has an air inlet hole that communicates with the annular cavity; the inner wall of the conical cylinder (5) is provided with an air blowing hole (8) that communicates with the annular cavity.

7. The dust extraction device of claim 6, wherein The air holes (8) are located between two adjacent toothed bosses (14) and are evenly distributed along the circumferential direction of the inner wall of the conical cylinder (5).

8. The dust extraction device of claim 6, wherein The walls of the air inlet (8) are arranged in a frustum shape so that the outlet diameter of the air inlet (8) gradually decreases.

9. The dust extraction device of claim 1, wherein It also includes a vibrating screening unit located inside the dust removal cylinder (4); the vibrating screening unit is located below the air outlet pipe (12) and above the air inlet pipe (2).

10. The dust extraction device of claim 9, wherein The vibrating screening unit includes a vibrating screen (10) and a cross (13) supporting the vibrating screen (10). The four ends of the cross (13) are supported on the inner wall of the dust removal cylinder (4).

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