Screening device for producing red phosphorus flame retardants with different particle sizes

Abstract

The utility model discloses a screening device for producing red phosphorus flame retardants with different particle sizes, which belongs to the technical field of red phosphorus flame retardant processing equipment and comprises an annular base, and a plurality of supporting legs and a plurality of lower vibration seats are distributed on the annular base at equal intervals in a staggered manner. A vibration cylinder is arranged above a hollow area in the center of the circular-ring-shaped base, a vibration motor is fixed to the center of the lower surface of the vibration cylinder, upper vibration bases corresponding to the lower vibration bases are arranged on the periphery of the outer side face of the vibration cylinder, and vibration springs are arranged between the upper vibration bases and the lower vibration bases. And an integrated screening assembly is arranged in the vibrating cylinder. According to the screening device, the vibration shell and the screen frames are integrally designed, the transmissibility of the vibration motor is guaranteed, meanwhile, the observation window is arranged, the specific screening condition of each layer of screen frame can be observed at any time, and the screening time is reasonably controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of red phosphorus flame retardant processing equipment, and more specifically to a screening device used for producing red phosphorus flame retardants with different particle sizes. Background Art

[0002] Red phosphorus flame retardant is a flame retardant represented by red phosphorus. It is a purple or slightly brown amorphous powder. It is an inorganic halogen-free flame retardant with excellent thermal stability, non-volatility, no corrosive gas, good flame retardant effect, good electrical insulation, etc. There is no toxicity risk during use, small addition amount, no dissolution, high melting point, etc.

[0003] In the production process of red phosphorus flame retardant, the strip material extruded from the extruder needs to be pelletized and cut. The granular materials have different particle sizes, and screening equipment is needed to screen and pack the materials of different particle sizes. In the prior art, a vibrating screen is generally used to screen red phosphorus flame retardant particles of different particle sizes. Its main structure includes a vibration plate at the bottom and a plurality of screen frames with different mesh sizes stacked above the vibration plate. In actual use, the above-mentioned vibrating screen structure has the following problems: first, each layer of the screen frame is a detachable monomer structure, which causes the vibration transmission rate of the vibration motor below to be attenuated more, and the vibration effect is not good enough; second, during the screening process, it is impossible to timely observe the specific screening situation of each layer of the screen frame, and timely discover the problem of screen hole blockage or whether the screening time is appropriate. Utility Model Content

[0004] The utility model aims to provide a screening device for the production of red phosphorus flame retardants with different particle sizes. The vibrating shell and the screen frame of the screening device are both integrated in design, which ensures the transmission rate of the vibration motor. At the same time, an observation window is provided, so that the specific screening situation of each layer of the screen frame can be observed at any time, and the screening time can be reasonably controlled.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A screening device for producing red phosphorus flame retardants of different particle sizes comprises a circular ring base, on which a plurality of support legs and a plurality of lower vibration seats are evenly and staggeredly distributed, a vibration cylinder is arranged above the central hollow area of ​​the circular ring base, a vibration motor is fixed at the central position of the lower surface of the vibration cylinder, upper vibration seats corresponding to the lower vibration seats are arranged around the outer side surface of the vibration cylinder, a vibration spring is arranged between the upper vibration seat and the lower vibration seat, and an integrated screening component is arranged inside the vibration cylinder.

[0007] As a further optimization of this solution, the screening assembly includes a bottom plate, a plurality of arc-shaped notches are provided at the edge of the lower surface of the bottom plate, a plurality of arc-shaped protrusions are provided on the inner side of the vibration cylinder, and the arc-shaped protrusions are aligned and embedded in the arc-shaped notches.

[0008] As a further optimization of the present scheme, a plurality of layers of equally spaced screen frames are arranged above the bottom plate, wherein the screen mesh apertures decrease successively from top to bottom, and the surrounding frames of the plurality of layers of equally spaced screen frames are fixed in series by a plurality of vertical connecting rods, a pressure plate is provided on the rod body above the vertical connecting rod, and the upper end of the vertical connecting rod extends out of the top cover.

[0009] As a further optimization of this solution, a positioning hole for passing the vertical connecting rod is opened on the surface of the top cover, and the top cover is fixed to the connecting ring below by peripheral bolts, and the connecting ring is welded and fixed at the peripheral position of the upper end of the vibration cylinder.

[0010] As a further optimization of this solution, a transparent observation shell is provided on the side of the vibration cylinder, and the center angle of the transparent observation shell is 45 to 60 degrees.

[0011] As a further optimization of this solution, a pressing plate is provided on the lower surface of the top cover.

[0012] As a further optimization of the present solution, a lifting handle is provided between the uppermost screen frame frames in the screen frame.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model can help the staff to observe the specific screening situation of each layer of the screen frame at any time and reasonably control the screening time by means of the transparent observation shell structure arranged on the side of the vibrating cylinder;

[0015] The vibrating drum and screening assembly of the utility model are both of integrated design. The vibrating drum is an integrated structure and is directly connected to the vibrating motor, thus avoiding the vibration attenuation problem of the multi-layer split screen frame structure in the prior art, ensuring the transmission rate of the vibrating motor and improving the vibration screening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the screening device of the utility model;

[0017] Figure 2 This is a schematic diagram of the disassembly structure of the top cover of the screening device of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the utility model when the screening component is taken out;

[0019] In the figure: 1. Vibration cylinder; 2. Vibration motor; 3. Screen frame; 4. Transparent observation shell; 5. Upper vibration seat; 6. Lower vibration seat; 7. Vibration spring; 8. Top cover; 9. Connecting ring; 10. Bolt; 11. Vertical connecting rod; 12. Circular base; 13. Support leg; 14. Positioning hole; 15. Press plate; 16. Screen; 17. Arc-shaped notch; 18. Bottom plate; 19. Arc-shaped protrusion. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the utility model easy to understand, the utility model is further explained below with reference to specific diagrams.

[0021] like Figure 1 As shown, the bottom of the present application includes a circular base 12, on which three support legs 13 and three lower vibration seats 6 are equidistantly and staggeredly distributed, a vibration cylinder 1 is provided above the central hollow area of ​​the circular base 12, a vibration motor 2 is fixed at the central position of the lower surface of the vibration cylinder 1, upper vibration seats 5 corresponding to the lower vibration seats 6 are provided around the outer side of the vibration cylinder 1, a vibration spring 7 is provided between the upper vibration seat 5 and the lower vibration seat 6, and an integrated screening component is provided inside the vibration cylinder 1;

[0022] The vibration cylinder 1 is an integrated structure without layers and is directly connected to the vibration motor 2;

[0023] like Figure 3 As shown, the screening assembly includes a bottom plate 18, three arc-shaped notches 17 are opened at the edge of the lower surface of the bottom plate 18, three arc-shaped protrusions 19 are arranged on the inner side of the vibration cylinder 1, and the arc-shaped protrusions 19 are aligned and embedded in the arc-shaped notches 17, and five layers of equally spaced screen frames 3 are arranged above the bottom plate 18, wherein the apertures of the screen meshes 16 of the screen frames 3 decrease from top to bottom, and the frames around the five layers of equally spaced screen frames 3 are fixed in series by three vertical connecting rods 11, and a pressing plate 15 is arranged on the rod body above the vertical connecting rod 11, and the upper end of the vertical connecting rod 11 extends out of the top cover 8;

[0024] The structure of the top cover 8 is as follows Figure 2 As shown, a positioning hole 14 for passing the vertical connecting rod 11 is opened on the surface of the top cover 8, and the top cover 8 is fixed to the connecting ring 9 below by the outer bolts 10, and the connecting ring 9 is welded and fixed at the outer position of the upper end of the vibration cylinder 1;

[0025] In addition, if Figure 1 As shown, a transparent observation shell 4 is provided on the side of the vibration cylinder 1, and the center angle of the transparent observation shell 4 is 45 degrees;

[0026] The working principle of the present application is that when in use, the top cover 8 is opened, and the screening component is aligned and placed into the interior of the vibration cylinder 1 by pulling the handle. During the process, the arc-shaped protrusion 19 is aligned and embedded into the arc-shaped notch 17 to limit the rotation of the screening component. Then the red phosphorus flame retardant particles to be screened are poured into the interior of the uppermost screen frame 3, the top cover 8 is covered, and the pressure plate 15 is pressed down to vertically limit the screening component so that the vertical connecting rod 11 is aligned and penetrated into the interior of the positioning hole 14. Then the top cover 8 and the connecting ring 9 are fixed by bolts 10, the vibration motor 2 is started, and the screening work begins. The vibration cylinder 1 vibrates continuously, and the materials inside the uppermost screen frame 3 are screened and fall into the lower screen frame 3 in turn, so as to achieve the purpose of screening of different particle sizes. During the process, the staff can observe the screening situation of each layer of the screen frame 3 through the transparent observation shell 4. When blockage is found, it is taken out in time for cleaning, and a reasonable screening vibration time is determined to achieve the purpose of screening.

[0027] The standard parts used in the utility model can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt the conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A screening device for the production of red phosphorus flame retardants of different particle sizes, comprising a circular ring base, on which a plurality of support legs and a plurality of lower vibration seats are staggered and distributed at equal intervals, characterized in that: A vibration cylinder is provided above the central hollow area of ​​the annular base, a vibration motor is fixed at the central position of the lower surface of the vibration cylinder, upper vibration seats corresponding to the lower vibration seats are provided around the outer side surfaces of the vibration cylinder, a vibration spring is provided between the upper vibration seat and the lower vibration seat, and an integrated screening component is provided inside the vibration cylinder.

2. A screening device for producing red phosphorus flame retardants with different particle sizes according to claim 1, characterized in that: The screening assembly comprises a bottom plate, a plurality of arc-shaped notches are provided at the edge of the lower surface of the bottom plate, a plurality of arc-shaped protrusions are provided on the inner side of the vibration cylinder, and the arc-shaped protrusions are aligned and embedded in the arc-shaped notches.

3. A screening device for producing red phosphorus flame retardants with different particle sizes according to claim 2, characterized in that: A plurality of equally spaced screen frames are arranged above the bottom plate, wherein the screen mesh apertures of the screen frames decrease successively from top to bottom, and the surrounding frames of the plurality of equally spaced screen frames are fixed in series by a plurality of vertical connecting rods, a pressure plate is arranged on the upper rod body of the vertical connecting rod, and the upper end of the vertical connecting rod extends out of the top cover.

4. A screening device for producing red phosphorus flame retardants with different particle sizes according to claim 3, characterized in that: A positioning hole for passing the vertical connecting rod is opened on the surface of the top cover, and the top cover is fixed to the connecting ring below by peripheral bolts, and the connecting ring is welded and fixed at the peripheral position of the upper end of the vibration cylinder.

5. A screening device for producing red phosphorus flame retardants with different particle sizes according to claim 4, characterized in that: A transparent observation shell is arranged on the side of the vibration cylinder, and the center angle of the transparent observation shell is 45 to 60 degrees.

6. A screening device for producing red phosphorus flame retardants with different particle sizes according to claim 5, characterized in that: The lower surface of the top cover is pressed down by a pressing plate.

7. A screening device for producing red phosphorus flame retardants with different particle sizes according to claim 6, characterized in that: A lifting handle is provided between the uppermost screen frame frames in the screen frame.

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