Dust particle size screening and collecting device
By designing the dust particle size screening and collection device for rotary screen plates and negative pressure fans, the problems of particles breakage, polymerization and blockage during the screening process in the prior art are solved, and more efficient screening and aggregates are achieved.
Patent Information
- Application Number
- CN202421797697.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-29
AI Technical Summary
The existing particle size screening device can easily lead to particle damage, polymerization, blockage, and problems of high noise and low efficiency during the screening process.
A dust particle size screening and collection device is designed. By rotating the screen plate, small particles are rotated to the edge, and the small particles are adsorbed into the aggregate box by using a negative pressure fan to avoid clogging.
It effectively avoids blockage during the screening process, improves screening efficiency, and reduces particle damage and polymerization.
Smart Images
Figure CN222901813U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of material screening, in particular to a device for screening and collecting dust particle sizes. Background Art
[0002] The particle size screening device is mainly used for separating and classifying materials with different particle sizes. Such devices usually work based on the particle size and shape of the materials, as well as the aperture size of the sieve mesh. It mainly consists of a sieve mesh, a vibration device, and a machine body. The working principle is as follows: Under the action of the vibration device, the material particles move on the sieve mesh. Large particles cannot pass through the aperture of the sieve mesh and thus stay above the sieve mesh; while small particles can pass through the aperture of the sieve mesh and fall into the collection container below. By adjusting the aperture of the sieve mesh and the parameters of the vibration device, precise separation of materials with different particle sizes can be achieved.
[0003] During the screening process, the vibration is strong, which may cause some particle types to be damaged, thus destroying the particle size distribution and affecting the screening results; for some particles, such as fly ash particles, due to strong mutual adsorption, they often aggregate into clusters during screening, affecting the accuracy of the screening results; in addition, some vibrating screens also have disadvantages such as high noise and easy blockage, and the efficiency is low when dealing with fine particle materials; the air flow sieve has a small processing capacity and poor separation effect; the cyclone sieve is easy to be blocked when the material viscosity is high and requires frequent maintenance; the sieve drum has disadvantages such as high noise and easy accumulation of materials. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a device for screening and collecting dust particle sizes to solve the above problems, make the sieve plate rotate, and use the rotational force to rotate the small powder particles with smaller particle sizes and lighter masses to the outside of the sieve plate; by reducing the pressure inside the housing with a negative pressure fan, the powder particles with smaller particle sizes and lighter masses fall into the aggregate box through the holes, avoiding the blockage problem of screening.
[0005] To achieve the above purpose, the utility model provides the following solution:
[0006] A device for screening and collecting dust particle sizes includes a housing, an inner cylinder is coaxially arranged inside the housing, the top surface of the inner cylinder is rotationally and sealingly connected with a sieve plate, the edge of the sieve plate is rotationally and sealingly connected with the inner wall of the housing, the top surface of the housing is fixedly connected with a top cover, a gap is reserved between the top cover and the sieve plate, the bottom surfaces of the housing and the inner cylinder are flush and sealed, a first air outlet assembly is opened at the bottom of the inner wall of the housing, a second air outlet assembly is opened at the bottom of the side wall of the inner cylinder, an aggregate box is arranged between the first air outlet assembly and the second air outlet assembly, a negative pressure assembly is arranged at the bottom of the housing, the air inlet end of the negative pressure assembly is communicated with the first air outlet assembly and the second air outlet assembly, and the rotating shaft of the negative pressure assembly is fixedly connected with the center of the bottom surface of the sieve plate.
[0007] Preferably, a plurality of sieve holes are formed in the edge of the sieve plate, and the plurality of sieve holes are arranged at equal intervals along the central axis direction of the sieve plate.
[0008] Preferably, the first air outlet assembly includes a plurality of first exhaust ports formed in the bottom of the inner wall of the housing, the plurality of first exhaust ports are arranged at equal intervals along the circumferential direction of the housing, an included angle is provided between the first exhaust port and the diameter of the housing, and the first exhaust port is externally communicated with the bottom surface of the housing.
[0009] Preferably, the second air outlet assembly includes a plurality of second exhaust ports formed in the bottom of the inner wall of the inner cylinder, the plurality of second exhaust ports are arranged at equal intervals along the circumferential direction of the inner cylinder, an included angle is provided between the second exhaust port and the diameter of the housing, and the second exhaust port penetrates through the side wall of the inner cylinder.
[0010] Preferably, the aggregate box is of an annular structure, an annular groove is formed in the top surface of the aggregate box, a plurality of air passing holes are formed in the two side walls of the aggregate box, the diameter of the air passing holes is smaller than the particle size of the dust particles, a bottom inclined plate is fixedly connected to the bottom surface of the aggregate box, a discharge pipe is provided at the bottom end of the bottom inclined plate, a solenoid valve is installed on the discharge pipe, and the discharge pipe penetrates through the side wall outside the aggregate box and penetrates out of the housing.
[0011] Preferably, the negative pressure assembly includes a bottom housing fixedly connected to the bottom surface of the housing, a fan is coaxially arranged inside the bottom housing, a motor is fixedly connected to the outer bottom surface of the bottom housing, an output shaft of the motor passes through the bottom surface of the bottom housing and is connected to the fan, the top surface of the fan is axially connected to the rotating shaft, and an air outlet is formed in the bottom surface of the bottom housing.
[0012] Preferably, an air inlet is installed on the top surface of the top cover.
[0013] Preferably, a plurality of first electrodes and a plurality of second electrodes are provided on the inner wall of the housing, a plurality of the second electrodes are arranged on the outer side wall of the inner cylinder, a plurality of the first electrodes are located between the top cover and the sieve plate, a plurality of the second electrodes are located between the sieve plate and the bottom wall of the housing, and the first electrodes and the second electrodes are respectively arranged in a circumferential and axial array.
[0014] Preferably, the plurality of first electrodes are divided into two groups with the diameter of the inner wall of the housing as the demarcation line, a plurality of the first electrodes in one group are positive electrodes, a plurality of the first electrodes in the other group are negative electrodes, the second electrodes located on the inner wall of the housing have the same polarity as the first electrodes on the same side, and the second electrodes located on the inner wall of the housing correspond to the second electrodes located on the outer wall of the inner cylinder one by one and have opposite polarities.
[0015] The utility model has the following technical effects:
[0016] The utility model fills a protective gas inside the housing. The protective gas can be argon. Through the rotation of the sieve plate, the fine particles are rotated to the edge. Through the arrangement of the negative pressure component, the fine particles at the edge of the sieve plate can be adsorbed downward, so that the screened small particles enter the aggregate box, effectively avoiding the problem of blockage in the screening process. Brief Description of the Drawings
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0018] Figure 1 It is a schematic structural diagram of the present utility model;
[0019] Figure 2 It is a schematic internal structure diagram of the present utility model;
[0020] Figure 3 It is a schematic diagram of the housing and inner cylinder structures.
[0021] Among them, 1. Housing; 101. Discharge pipe; 102. First exhaust port; 2. Top cover; 201. Air inlet; 3. Inner cylinder; 301. Second exhaust port; 4. Sieve plate; 401. Sieve holes; 5. Aggregate box; 501. Air passing holes; 502. Bottom inclined plate; 6. Bottom housing; 601. Air outlet; 7. Fan; 8. Motor; 9. First electrode; 10. Second electrode. Detailed Embodiments
[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.
[0023] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below with reference to the drawings and specific embodiments.
[0024] Refer to Figures 1 to 3As shown in the figure, this embodiment provides a dust particle size screening and collection device, which includes a housing 1. An inner cylinder 3 is coaxially arranged inside the housing 1. The top surface of the inner cylinder 3 is hermetically and rotatably connected to a sieve plate 4. The edge of the sieve plate 4 is rotatably and hermetically connected to the inner wall of the housing 1. The top surface of the housing 1 is fixedly connected to a top cover 2, and there is a gap reserved between the top cover 2 and the sieve plate 4. The bottom surfaces of the housing 1 and the inner cylinder 3 are flush and sealed. A first air outlet assembly is opened at the bottom of the inner wall of the housing 1, and a second air outlet assembly is opened at the bottom of the side wall of the inner cylinder 3. An aggregate box 5 is arranged between the first air outlet assembly and the second air outlet assembly. A negative pressure assembly is arranged at the bottom of the housing 1. The air inlet end of the negative pressure assembly is communicated with the first air outlet assembly and the second air outlet assembly, and the rotating shaft of the negative pressure assembly is fixedly connected to the center of the bottom surface of the sieve plate 4.
[0025] In the present utility model, a protective gas is filled inside the housing 1. The protective gas can be selected as argon. Through the rotation of the sieve plate 4, the fine particles are rotated to the edge. Through the setting of the negative pressure assembly, the fine particles at the edge of the sieve plate 4 can be adsorbed downward, so that the screened small particles enter the aggregate box 5, effectively avoiding the problem of blockage during the screening process.
[0026] In a further optimized scheme, a plurality of sieve holes 401 are opened at the edge of the sieve plate 4, and the plurality of sieve holes 401 are arranged at equal intervals along the central axis of the sieve plate 4.
[0027] The sieve holes 401 are used for screening fine particles.
[0028] In a further optimized scheme, the first air outlet assembly includes a plurality of first exhaust ports 102 opened at the bottom of the inner wall of the housing 1. The plurality of first exhaust ports 102 are arranged at equal intervals along the circumferential direction of the housing 1. There is an included angle between the first exhaust port 102 and the diameter of the housing 1, and the first exhaust port 102 is communicated with the outside of the bottom surface of the housing 1.
[0029] In a further optimized scheme, the second air outlet assembly includes a plurality of second exhaust ports 301 opened at the bottom of the inner wall of the inner cylinder 3. The plurality of second exhaust ports 301 are arranged at equal intervals along the circumferential direction of the inner cylinder 3. There is an included angle between the second exhaust port 301 and the diameter of the housing 1, and the second exhaust port 301 penetrates the side wall of the inner cylinder 3.
[0030] Through the settings of the first exhaust port 102 and the second exhaust port 301, a rotating air flow can be formed at the position of the aggregate box 5 to push the fine particles to move, avoiding the fine particles from blocking the aggregate box 5 and affecting the screening.
[0031] For a further optimized solution, the aggregate box 5 is of an annular structure. An annular groove is provided on the top surface of the aggregate box 5. A number of air holes 501 are provided on the two side walls of the aggregate box 5. The diameter of the air holes 501 is smaller than the particle size of the dust particles. A bottom inclined plate 502 is fixedly connected to the bottom surface of the aggregate box 5. An outlet pipe 101 is provided at the bottom end of the bottom inclined plate 502. A solenoid valve is installed on the outlet pipe 101. The outlet pipe 101 penetrates through the side wall outside the aggregate box 5 and penetrates through the outer shell 1.
[0032] Due to the slight vibration during the operation of the equipment, the setting of the bottom inclined plate 502 can ensure that the fine particles after screening gather at the position of the outlet pipe 101, facilitating the discharge of the material.
[0033] For a further optimized solution, the negative pressure assembly includes a bottom shell 6 fixedly connected to the bottom surface of the outer shell 1. A fan 7 is coaxially arranged inside the bottom shell 6. A motor 8 is fixedly connected to the bottom surface outside the bottom shell 6. The output shaft of the motor 8 passes through the bottom surface of the bottom shell 6 and is connected to the fan 7. The top surface of the fan 7 is axially connected to the rotating shaft. An air outlet 601 is provided on the bottom surface of the bottom shell 6.
[0034] The motor 8 drives the fan 7 to rotate, and the fan 7 drives the sieve plate 4 to rotate through the rotating shaft, so that the sieve plate 4 has centrifugal force.
[0035] For a further optimized solution, an air inlet 201 is installed on the top surface of the top cover 2. The function of the air inlet 201 is to connect the protective gas.
[0036] For a further optimized solution, a number of first electrodes 9 and a number of second electrodes 10 are provided on the inner wall of the outer shell 1. A number of second electrodes 10 are provided on the outer side wall of the inner cylinder 3. A number of first electrodes 9 are located between the top cover 2 and the sieve plate 4. A number of second electrodes 10 are located between the sieve plate 4 and the bottom wall of the outer shell 1. The first electrodes 9 and the second electrodes 10 are arranged in circumferential and axial arrays respectively.
[0037] For a further optimized solution, a number of first electrodes 9 are divided into two groups with the inner wall diameter of the outer shell 1 as the demarcation line. A number of first electrodes 9 in one group are positive electrodes, and a number of first electrodes 9 in the other group are negative electrodes. The second electrodes 10 located on the inner wall of the outer shell 1 have the same polarity as the first electrodes 9 on the same side. The second electrodes 10 located on the inner wall of the outer shell 1 correspond to the second electrodes 10 located on the outer wall of the inner cylinder 3 one by one and have opposite polarities.
[0038] Taking the diameter of the outer shell 1 as the demarcation line for the first electrode 9, the two first electrodes 9 corresponding to the positive and negative poles located at the midpoint of the diameter are the farthest apart, and the two first electrodes 9 corresponding to the positive and negative poles located at the ends of the diameter are the closest. By applying voltage and current of corresponding intensities to the two first electrodes 9 corresponding to the positive and negative poles, the uniformity of the electric field above the sieve plate 4 can be ensured. Since the second electrodes 10 are respectively distributed on the inner cylinder 3 and the outer shell 1, the corresponding spacing of this part of the electrodes remains unchanged. Applying uniform voltage and current can ensure the uniformity of the electric field within the entire device.
[0039] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0040] The embodiments described above are only descriptions of the preferred modes of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present utility model shall fall within the protection scope determined by the claims of the present utility model.
Claims
1. A dust particle size screening and collection device, characterized in that: The invention comprises an outer shell (1), wherein an inner cylinder (3) is coaxially arranged inside the outer shell (1), the top surface of the inner cylinder (3) is sealingly and rotatably connected to a sieve plate (4), the edge of the sieve plate (4) is rotatably and sealably connected to the inner wall of the outer shell (1), the top surface of the outer shell (1) is fixedly connected to a top cover (2), a space is reserved between the top cover (2) and the sieve plate (4), the bottom surfaces of the outer shell (1) and the inner cylinder (3) are flush and sealed, the bottom of the inner wall of the outer shell (1) is provided with a first air outlet component, the bottom of the side wall of the inner cylinder (3) is provided with a second air outlet component, a collecting box (5) is provided between the first air outlet component and the second air outlet component, the bottom surface of the outer shell (1) is provided with a negative pressure component, the air inlet end of the negative pressure component is connected to the first air outlet component and the second air outlet component, and the rotating shaft of the negative pressure component is fixedly connected to the center of the bottom surface of the sieve plate (4).
2. A dust particle size screening and collection device according to claim 1, characterized in that: A plurality of sieve holes (401) are provided on the edge of the sieve plate (4), and the plurality of sieve holes (401) are arranged at equal intervals along the central axis of the sieve plate (4).
3. The dust particle size screening and collection device according to claim 1, characterized in that: The first air outlet component comprises a plurality of first exhaust ports (102) provided at the bottom of the inner wall of the outer shell (1); the plurality of first exhaust ports (102) are arranged at equal intervals along the circumference of the outer shell (1); an angle is provided between the first exhaust ports (102) and the diameter of the outer shell (1); and the first exhaust ports (102) are connected to the outside of the bottom surface of the outer shell (1).
4. The dust particle size screening and collection device according to claim 1, characterized in that: The second air outlet assembly comprises a plurality of second exhaust ports (301) provided at the bottom of the inner wall of the inner cylinder (3); the plurality of second exhaust ports (301) are arranged at equal intervals along the circumference of the inner cylinder (3); an angle is provided between the second exhaust ports (301) and the diameter of the outer shell (1); and the second exhaust ports (301) penetrate the side wall of the inner cylinder (3).
5. The dust particle size screening and collection device according to claim 1, characterized in that: The material collecting box (5) is a circular ring structure, the top surface of the material collecting box (5) is provided with an annular groove, the two side walls of the material collecting box (5) are provided with a plurality of air holes (501), the diameter of the air holes (501) is smaller than the particle size of the dust particles, the bottom surface of the material collecting box (5) is fixedly connected with a bottom inclined plate (502), the bottom end of the bottom inclined plate (502) is provided with a discharge pipe (101), a solenoid valve is installed on the discharge pipe (101), and the discharge pipe (101) passes through the side wall outside the material collecting box (5) and passes through the outer shell (1).
6. The dust particle size screening and collection device according to claim 1, characterized in that: The negative pressure component comprises a bottom shell (6) fixedly connected to the bottom surface of the outer shell (1), a fan (7) is coaxially arranged inside the bottom shell (6), a motor (8) is fixedly connected to the outer bottom surface of the bottom shell (6), an output shaft of the motor (8) passes through the bottom surface of the bottom shell (6) and the fan (7), the top surface of the fan (7) is axially connected to the rotating shaft, and an air outlet (601) is opened on the bottom surface of the bottom shell (6).
7. The dust particle size screening and collection device according to claim 1, characterized in that: An air inlet (201) is installed on the top surface of the top cover (2).
8. The dust particle size screening and collection device according to claim 1, characterized in that: The inner wall of the outer shell (1) is provided with a plurality of first electrodes (9) and a plurality of second electrodes (10), and the outer wall of the inner cylinder (3) is provided with a plurality of second electrodes (10); the plurality of first electrodes (9) are located between the top cover (2) and the sieve plate (4), and the plurality of second electrodes (10) are located between the sieve plate (4) and the bottom wall of the outer shell (1); and the first electrodes (9) and the second electrodes (10) are arranged in an array along the circumferential direction and the axial direction, respectively.
9. The dust particle size screening and collection device according to claim 8, characterized in that: The plurality of first electrodes (9) are divided into two groups with the inner wall diameter of the outer shell (1) as a dividing line, wherein the plurality of first electrodes (9) in one group are positive electrodes, and the plurality of first electrodes (9) in the other group are negative electrodes, the second electrodes (10) located on the inner wall of the outer shell (1) have the same polarity as the first electrodes (9) on the same side, and the second electrodes (10) located on the inner wall of the outer shell (1) correspond one-to-one with the second electrodes (10) located on the outer wall of the inner cylinder (3) and have opposite polarities.