Anti-sticking cyclone screen

Abstract

The utility model discloses an anti-sticking cyclone screen, and belongs to the technical field of screening equipment. Comprising a rotating blade set and a barrel-shaped screen arranged on the periphery of the rotating blade set in a sleeving mode, and a fine powder screening area is defined by the barrel-shaped screen and the rotating blade set; the periphery of the cylindrical screen is sleeved with a horizontal shell, and a fine powder discharging opening is formed in the position, under the cylindrical screen, in the horizontal shell. Wherein a feeding barrel and a coarse powder discharging cover which are communicated with the fine powder screening area are arranged at openings in the two ends of the horizontal shell correspondingly, a spiral conveying rod coaxial with the rotating blade set is arranged in the feeding barrel, and a driving module capable of driving the rotating blade set and the spiral conveying rod to rotate is arranged at one end of the feeding barrel; a gas sealing module capable of introducing gas towards the fine powder screening area is arranged in the feeding cylinder; the anti-sticking cyclone screen solves the problem that in the prior art, materials are prone to adhering to the surface of the screen.

Description

Technical Field

[0001] The utility model belongs to the technical field of screening equipment, and particularly relates to an anti-sticking cyclone sieve. Background Art

[0002] Airflow sieves are widely used in industries such as chemical industry, medicine, food, paper making, metallurgy, building materials, rubber, and machinery. They are a kind of high-precision screening equipment that can screen and classify powdery or granular materials. However, in the process of using the existing cyclone sieves, due to the fact that some materials will generate a certain degree of stickiness under specific circumstances, the problem that materials adhere to the surface of the sieve mesh often occurs. This not only affects the screening efficiency and screening accuracy, but also requires frequent shutdown for cleaning, increasing the production cost and maintenance time. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide an anti-sticking cyclone sieve, which solves the problem that materials are prone to adhere to the surface of the sieve mesh in the prior art.

[0004] To achieve the above object, the technical solution adopted by the utility model is: an anti-sticking cyclone sieve, including a rotating blade group and a cylindrical sieve mesh sleeved on the outer periphery of the rotating blade group. A fine powder screening area is formed between the cylindrical sieve mesh and the rotating blade group;

[0005] A horizontal shell is sleeved on the outer periphery of the cylindrical sieve mesh. A fine powder discharge port is arranged directly below the cylindrical sieve mesh in the horizontal shell;

[0006] Wherein, feeding cylinders and coarse powder discharging covers communicating with the fine powder screening area are respectively arranged at the two open ends of the horizontal shell. A spiral conveyor rod coaxially arranged with the rotating blade group is arranged in the feeding cylinder. A driving module capable of driving the rotating blade group and the spiral conveyor rod to rotate is arranged at one end of the feeding cylinder;

[0007] An air sealing module capable of introducing gas into the fine powder screening area is arranged in the feeding cylinder.

[0008] Optionally, an annular convex part facing the cylindrical sieve mesh is arranged at the open end of the horizontal shell connected to the feeding cylinder;

[0009] Flange collar rings are respectively sleeved on the outer peripheries of the two ends of the cylindrical sieve mesh, and fixing screws are arranged between the flange collar rings;

[0010] The flange collar rings can be sleeved on the outer periphery of the annular convex part, and the flange collar rings can be clamped between the horizontal shell and the coarse powder discharging cover.

[0011] Optionally, the air seal module includes an air seal collar disposed between the feed cylinder and the screw conveyor. A bearing capable of connecting to the screw conveyor and the drive module is provided inside the air seal collar, and an air inlet passage capable of introducing gas into the feed cylinder is provided on the air seal collar.

[0012] Optionally, the rotating blade group includes a shaft tube coaxially arranged with the screw conveyor. A plurality of material pushing blades are provided on the shaft tube. The plurality of material pushing blades are circumferentially distributed along the central axis of the shaft tube. The material pushing blades are spiral and have a long strip rectangular cross section.

[0013] Optionally, one side of the coarse powder discharge cover is hinged to the horizontal housing, and a first buckle is provided between the other side of the coarse powder discharge cover and the horizontal housing.

[0014] Optionally, a breathable cap communicating with the fine powder screening area is provided on the horizontal housing.

[0015] Optionally, a transparent window is detachably connected to the top of the horizontal housing, and a plurality of groups of second buckles are provided between the transparent window and the horizontal housing.

[0016] Optionally, a flange feed port is provided on the feed cylinder in the vertical direction, and the flange feed port is located directly above the screw conveyor.

[0017] Optionally, an ultrasonic vibration device connected to the cylindrical screen is provided inside the horizontal housing.

[0018] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows: The gas introduced into the feed cylinder through the air seal module and the material form a solid-gas mixture under the action of the screw conveyor. At the same time, when the screw conveyor rotates at a high speed, the solid-gas mixture formed by the material and the gas can be pushed to the fine powder screening area. Cooperating with the rotating blade group rotating at a high speed, the material in the solid-gas mixture can be quickly and repeatedly slapped against the inner wall of the cylindrical screen. The material with a smaller particle size can pass through the cylindrical screen and fall into the fine powder discharge port, while the material with a larger particle size can be pushed out of the fine powder screening area by the material pushing blades, effectively preventing the material from adhering to the cylindrical screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present utility model will be further described below with reference to the drawings and embodiments.

[0020] Figure 1 is a schematic structural diagram of an anti-adhesion cyclone screen in a preferred embodiment of the present utility model;

[0021] Figure 2 is a schematic side view structural diagram of an anti-adhesion cyclone screen in a preferred embodiment of the present utility model;

[0022] Figure 3 In the preferred embodiment of the present utility model Figure 2 is a schematic cross-sectional structure diagram taken along line A-A;

[0023] Figure 4 is a schematic top view structure diagram of the anti-sticking cyclone sieve in the preferred embodiment of the present utility model;

[0024] Figure 5 is a schematic structure diagram of the rotating blade group in the preferred embodiment of the present utility model;

[0025] Among them, 1. cylindrical screen; 2. horizontal shell; 201. fine powder discharge port; 202. annular convex part; 3. feed cylinder; 301. flange feed port; 4. coarse powder blanking cover; 5. spiral conveyor rod; 6. drive module; 7. flange collar; 8. fixing screw; 9. shaft tube; 10. dialing blade; 11. first buckle; 12. breather cap; 13. transparent window; 14. second buckle. Detailed implementation manners

[0026] Now, the present utility model will be further described in detail with reference to the accompanying drawings and embodiments. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0027] It should be noted that if there are directional indications (such as up, down, bottom, top, etc.) involved in this embodiment, then such directional indications are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture. If this specific posture changes, then such directional indications will also change accordingly. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. Unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] Such as Figures 1 - 5As shown in the figure, an anti-sticking cyclone sieve includes a rotating blade group and a cylindrical screen 1 sleeved on the outer periphery of the rotating blade group. A fine powder screening area is formed between the cylindrical screen 1 and the rotating blade group. A horizontal shell 2 is sleeved on the outer periphery of the cylindrical screen 1, and a fine powder discharge port 201 is arranged directly below the cylindrical screen 1 inside the horizontal shell 2. Among them, a feeding cylinder 3 communicating with the fine powder screening area and a coarse powder discharging cover 4 are respectively arranged at the two open ends of the horizontal shell 2. A spiral conveying rod 5 coaxially arranged with the rotating blade group is arranged inside the feeding cylinder 3, and a driving module 6 capable of driving the rotating blade group and the spiral conveying rod 5 to rotate is arranged at one end of the feeding cylinder 3. An air sealing module capable of introducing gas into the fine powder screening area is arranged inside the feeding cylinder 3.

[0029] Specifically, a number of uniformly arranged screening holes are provided on the cylindrical screen 1. The outer periphery of the spiral conveying rod 5 is a plate material with one end in a spiral shape. The driving module 6 is a motor. The spiral conveying rod 5 can be fixedly connected to the rotating blade group, and one end of the spiral conveying rod 5 is connected to the output shaft of the motor, that is, the bolt conveying rod and the rotating blade group can be driven to rotate through the driving module 6. When screening materials, the materials can be poured into the feeding cylinder 3 through an opening at one end. To facilitate the pouring of materials, a hopper or the like can be arranged at the opening at one end of the feeding cylinder 3. Subsequently, the driving module 6 drives the spiral conveying rod 5 and the rotating blade group to rotate, and the air sealing module connects to the gas source. Preferably, an inert gas such as nitrogen can be selected to keep the materials in a relatively stable state. When the spiral conveying rod 5 rotates, it can convey the materials into the fine powder screening area. Along with the rotation of the rotating blade group, the materials can be continuously flipped, and at the same time, the materials can be continuously slapped onto the cylindrical screen 1. The materials with smaller particle sizes can pass through the cylindrical screen 1 and fall into the fine powder discharge port 201, while the materials with larger particle sizes can be pushed out of the fine powder screening area under the push of the rotating blade group until they are discharged through the coarse powder discharging cover 4. In this technical solution, the gas introduced into the feeding cylinder 3 by the air sealing module and the materials form a solid-gas mixture under the action of the spiral conveying rod 5. At the same time, when the spiral conveying rod 5 rotates at a high speed, it can push the solid-gas mixture formed by the materials and the gas into the fine powder screening area. Cooperating with the rotating blade group rotating at a high speed, the materials in the solid-gas mixture can be quickly and repeatedly slapped against the inner wall of the cylindrical screen 1, which can effectively prevent the materials from adhering to the cylindrical screen 1.

[0030] As described above, such as Figure 3As shown in the figure, to facilitate the replacement of the cylindrical sieve mesh 1 with different mesh numbers according to different requirements, an annular convex part 202 facing the cylindrical sieve mesh 1 is provided at the opening at one end of the horizontal shell 2 connected to the feed cylinder 3; flange sleeves 7 are respectively sleeved on the outer circumferences of both ends of the cylindrical sieve mesh 1, and fixing screws 8 are arranged between the flange sleeves 7; the flange sleeves 7 can be sleeved on the outer circumference of the annular convex part 202, and the flange sleeves 7 can be clamped between the horizontal shell 2 and the coarse powder discharge cover 4. In the cylindrical sieve mesh 1 of this technical solution, the concentricity with the rotating blade group is maintained through the flange sleeves 7, and at the same time, after the coarse powder discharge cover 4 is opened, it can be quickly disassembled and replaced.

[0031] Further, as Figure 4 shown in the figure, to facilitate the quick disassembly and replacement of the cylindrical sieve mesh 1, one side of the coarse powder discharge cover 4 is hinged to the horizontal shell 2, and a first buckle 11 is arranged between the other side of the coarse powder discharge cover 4 and the horizontal shell 2. The coarse powder discharge cover 4 can be quickly connected to the horizontal shell 2 through the first buckle 11, which is convenient for operation.

[0032] As described above, the air seal module includes an air seal collar arranged between the feed cylinder 3 and the screw conveyor 5. A bearing capable of being connected to the screw conveyor 5 and the drive module 6 is arranged in the air seal collar, and an air inlet passage capable of introducing gas into the feed cylinder 3 is arranged on the air seal collar. One end of the air inlet passage can be connected to a gas source through a quick connector, a gas pipe, etc. While facilitating the input of inert gas into the feed cylinder 3 and the fine powder screening area, it can also achieve the function of airtight seal to prevent materials from entering the drive module 6 through the gap between the screw conveyor 5 and the feed cylinder 3.

[0033] As described above, to increase the effect of the rotating blade group on patting and conveying materials, the rotating blade group includes a shaft tube 9 coaxially arranged with the screw conveyor 5. A number of material distributing blades 10 are arranged on the shaft tube 9. The number of material distributing blades 10 is circumferentially distributed along the central axis of the shaft tube 9. The material distributing blades 10 are spiral, and their cross-sections are long strip rectangles. The material distributing blades 10 have the same spiral direction as the screw conveyor 5.

[0034] As described above, one end of the feed cylinder 3 can be connected to equipment such as a gas conveyor to convey materials into the cyclone sieve through equipment such as a gas conveyor.

[0035] Further, a breathable cap 12 communicating with the fine powder screening area is arranged on the horizontal shell 2 to facilitate gas circulation. A filter screen, a one-way valve, etc. can be arranged in the breathable cap 12, which can promote gas circulation while preventing material diffusion and gas backflow.

[0036] Further, a transparent window 13 is detachably connected to the top of the horizontal shell 2. A number of groups of second buckles 14 are arranged between the transparent window 13 and the horizontal shell 2 to facilitate operators to observe the working state of the cyclone sieve in real time through the transparent window 13.

[0037] Further, a flange feed inlet 301 is vertically arranged on the feed cylinder 3. The flange feed inlet 301 is located directly above the screw conveyor 5, preventing materials from clogging in the feed cylinder 3 and facilitating the assembly of devices such as hoppers and gas conveyors with the cyclone sieve through the flange feed inlet 301.

[0038] Further, an ultrasonic vibration device connected to the cylindrical screen 1 is arranged inside the horizontal housing 2. The ultrasonic vibration device is a prior art. The ultrasonic vibration device can use the high-frequency sound waves of ultrasonic waves to cause the cylindrical screen 1 to oscillate, preventing materials from adhering to the cylindrical screen 1.

[0039] Working principle: When screening materials, first pour the materials into the cyclone sieve through one end opening on the feed cylinder 3. Subsequently, the drive module 6 is started to drive the screw conveyor 5 and the rotating blade group to rotate at high speed; the gas seal module is connected to an inert gas such as nitrogen; the ultrasonic vibration device is turned on. When the screw conveyor 5 rotates at high speed, it can transport the materials to the fine powder screening area; when the material deflecting blades 10 rotate at high speed, they can continuously push and flip the materials, and at the same time, they can also continuously beat the materials onto the cylindrical screen 1, causing the materials with smaller particle sizes to pass through the cylindrical screen 1 and fall into the fine powder discharge port 201, while the materials with larger particle sizes can be pushed out of the fine powder screening area under the push of the material deflecting blades 10 until they are discharged through the coarse powder discharge cover 4, thus completing the screening of the materials.

[0040] Based on the ideal embodiments of the present invention as an inspiration, through the above description, relevant personnel can completely make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. An anti-sticking cyclone screen, characterized in that: It comprises a rotating blade group and a cylindrical screen (1) sleeved on the outer periphery of the rotating blade group, wherein a fine powder screening area is formed between the cylindrical screen (1) and the rotating blade group; A horizontal shell (2) is provided on the outer periphery of the cylindrical screen (1), and a fine powder discharge port (201) is provided in the horizontal shell (2) directly below the cylindrical screen (1); Wherein, a feed barrel (3) and a coarse powder discharge cover (4) which are connected to the fine powder screening area are respectively arranged at the openings at both ends of the horizontal shell (2); a spiral conveying rod (5) which is coaxially arranged with the rotating blade group is arranged in the feed barrel (3); and a driving module (6) which can drive the rotating blade group and the spiral conveying rod (5) to rotate is arranged at one end of the feed barrel (3); A gas sealing module capable of introducing gas toward the fine powder screening area is arranged in the feeding barrel (3).

2. The anti-sticking cyclone screen according to claim 1, characterized in that: An annular protrusion (202) disposed toward the cylindrical screen (1) is provided at an opening at one end of the horizontal shell (2) connected to the feed cylinder (3); The outer circumferences of both ends of the cylindrical screen (1) are respectively sleeved with flange rings (7), and a fixing screw (8) is arranged between the flange rings (7); The flange collar (7) can be sleeved on the outer periphery of the annular protrusion (202), and the flange collar (7) can be clamped between the horizontal shell (2) and the coarse powder discharge cover (4).

3. The anti-sticking cyclone screen according to claim 1 is characterized in that: The air sealing module comprises an air sealing collar arranged between the feed barrel (3) and the screw conveying rod (5), the air sealing collar being provided with a bearing capable of being connected to the screw conveying rod (5) and the driving module (6), and the air sealing collar being provided with an air inlet passage capable of introducing gas into the feed barrel (3).

4. The anti-sticking cyclone screen according to claim 1, characterized in that: The rotating blade group comprises an axial tube (9) coaxially arranged with the spiral conveying rod (5); a plurality of material-moving blades (10) are arranged on the axial tube (9); the plurality of material-moving blades (10) are distributed in a circular pattern along the central axis of the axial tube (9); the material-moving blades (10) are spiral-shaped, and their cross-sections are long rectangular.

5. The anti-sticking cyclone screen according to claim 1, characterized in that: One side of the coarse powder discharge cover (4) is hinged on the horizontal shell (2), and a first buckle (11) is provided between the other side of the coarse powder discharge cover (4) and the horizontal shell (2).

6. The anti-sticking cyclone screen according to claim 1, characterized in that: The horizontal housing (2) is provided with a breathable cap (12) which is in communication with the fine powder screening area.

7. The anti-sticking cyclone screen according to claim 1, characterized in that: A transparent window (13) is detachably connected to the top of the horizontal shell (2), and a plurality of groups of second buckles (14) are provided between the transparent window (13) and the horizontal shell (2).

8. The anti-sticking cyclone screen according to claim 1, characterized in that: A flange feed opening (301) is provided on the feed barrel (3) in the vertical direction, and the flange feed opening (301) is located directly above the spiral conveying rod (5).

9. The anti-sticking cyclone screen according to claim 1, characterized in that: An ultrasonic vibration device connected to the cylindrical screen (1) is arranged in the horizontal shell (2).

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