Cyclone separator for flame retardant

By using a quick-release connector and flexible membrane structure design, combined with a motor-driven connecting rod and auger, the problem of difficult disassembly of the flame retardant cyclone separator is solved, enabling rapid maintenance and efficient separation, avoiding cross-contamination and material residue, and improving the service life of the equipment.

CN223628779UActive Publication Date: 2025-12-05HEBEI NAIAN FLAME RETARDANT MATERIALS CO LTD
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Patent Information

Application Number
CN202423163009.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-20
Publication Date
2025-12-05
Estimated Expiration
2034-12-20

AI Technical Summary

Technical Problem

Existing flame retardant cyclone separators are difficult to disassemble, have long maintenance times, and are prone to cross-contamination or material residue, affecting separation efficiency and equipment lifespan.

Method used

The device employs quick-release connectors and a flexible membrane structure, using a combination of springs and limit rings to enable rapid disassembly and installation of the separation mechanism. Combined with a motor-driven connecting rod and an auger, centrifugal force is utilized to achieve efficient separation of flame retardant particles.

Benefits of technology

It enables rapid maintenance, avoids cross-contamination and material residue, and improves separation efficiency and equipment lifespan.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of separators, and provides a flame retardant cyclone separator which comprises a separation box, the separation box is fixedly connected with a conical barrel through a quick-release connector, a collection barrel is fixedly installed at the bottom of the conical barrel, a support is fixedly installed in the collection barrel, and the separation box is fixedly connected with the conical barrel through the quick-release connector. A motor is fixedly installed on the inner side of the support, an output shaft of the motor extends into the conical barrel, a first connecting rod is fixedly connected to the end of the output shaft of the motor, and the outer surface of the first connecting rod is movably sleeved with an annular sleeve. The elastic force recovery effect of the flexible film fixedly installed on the inner side of the circular groove enables the limiting clamping ball originally clamped into the inner side of the trapezoidal sleeve block to recover to the original position in the direction away from the trapezoidal sleeve block, limitation on the trapezoidal sleeve block is relieved, compared with a traditional device, the device can be rapidly disassembled by maintenance personnel, and the maintenance efficiency is improved. By means of the technical scheme, the problem that in the prior art, disassembly is difficult is solved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of separator, specifically, relate to a cyclone separator for flame retardant. BACKGROUND

[0002] In the production process of flame retardant, the solid flame retardant particles generated by reaction are often separated from the airflow to obtain pure products. The flame retardant particles are prone to agglomeration, which affects the separation effect and product yield. The production process is often accompanied by high temperature and high humidity airflow, which causes the equipment to be easily corroded and worn, and the stability and service life are greatly reduced.

[0003] The existing cyclone separator for flame retardant cannot be quickly disassembled by maintenance personnel, and it is very cumbersome to check and maintain when the parts have problems. It takes a lot of time to disassemble the entire equipment, greatly increasing the maintenance time. Cross contamination or material residue caused by incomplete cleaning can affect subsequent separation work, so it needs to be improved and optimized. UTILITY MODEL CONTENT

[0004] The utility model provides a cyclone separator for flame retardant, solve the difficult problem of disassembly in relevant technology.

[0005] The technical scheme of the utility model is as follows: a cyclone separator for flame retardant, comprising a separation box, the separation box and the conical cylinder are fixedly connected through a quick release connector, a collecting cylinder is fixedly installed at the bottom of the conical cylinder, a support is fixedly installed inside the collecting cylinder, a motor is fixedly installed inside the support, and the output shaft of the motor extends into the conical cylinder, a first connecting rod is fixedly connected to the end of the output shaft of the motor, an annular sleeve is movably sleeved on the outer surface of the first connecting rod, a limiting ring is fixedly sleeved on the outer surface of the first connecting rod and located inside the annular sleeve, an L-shaped moving ring is fixedly sleeved on the inner wall of the annular sleeve and located above the limiting ring, a spring is connected between the limiting ring and the L-shaped moving ring, a circular groove is formed in the outer surface of the first connecting rod and located above the spring, the circular groove is evenly spaced in equidistant circumferential array, a limiting ball is placed in the inner side of the circular groove, a second connecting rod is movably installed in the first connecting rod, a trapezoidal sleeve block is fixedly sleeved on the outer surface of the second connecting rod and located inside the circular groove and the limiting ball, a flexible film is fixedly installed in the inner side of the circular groove and located between the limiting ball and the trapezoidal sleeve block, and a separation mechanism is fixedly connected to the end of the second connecting rod.

[0006] As a preferred technical scheme of the utility model, the end of the second connecting rod is fixedly connected with the third connecting rod which extends to the inside of the separation box, the motor is fixedly installed on the inside of the support and the output shaft of the motor extends to the inside of the conical cylinder, the end of the output shaft of the motor is fixedly connected with the first connecting rod, the outer surface of the third connecting rod is fixedly installed with the auger, the top outer surface of the first connecting rod is fixedly installed with the transmission mechanism and the first connecting rod and the second connecting rod are driven through the transmission mechanism.

[0007] As a preferred technical scheme of the utility model, the top outer surface of the first connecting rod is fixedly installed with the cross convex block, the bottom outer surface of the second connecting rod is provided with the cross concave groove, and the cross convex block and the cross concave groove are matched with each other.

[0008] As a preferred technical scheme of the utility model, the outside of the motor on the inside of the support is fixedly installed with the protective cover, and the output shaft of the motor penetrates the protective cover.

[0009] As a preferred technical scheme of the utility model, the inner wall of the conical cylinder is fixedly installed with the flexible buffer plate, and the flexible buffer plate is annular on the inner wall of the conical cylinder.

[0010] As a preferred technical scheme of the utility model, the outer surface of the separation box is fixedly installed with the air inlet connecting pipe, and the air inlet connecting pipe extends to the inside of the separation box.

[0011] As a preferred technical scheme of the utility model, the top of the separation box is fixedly installed with the air outlet pipe, and the air outlet pipe extends to the inside of the separation box.

[0012] As a preferred technical scheme of the utility model, the outer surface of the separation box is fixedly installed with the observation window in the front, and the observation window is transparent.

[0013] As a preferred technical scheme of the utility model, the outer surface of the conical cylinder is fixedly installed with the annular support frame, and the annular support frame is annular on the outside of the conical cylinder.

[0014] As a preferred technical scheme of the utility model, the bottom of the conical cylinder is fixedly installed with the collecting cylinder, and the collecting cylinder is communicated with the conical cylinder.

[0015] The working principle and beneficial effects of the utility model are as follows:

[0016] 1. The utility model discloses a flexible film is fixedly installed in the circular recess inner side elasticity recovery effect makes the originally card into trapezoidal sleeve block inside limit ball restore original position to the direction of trapezoidal sleeve block, remove the restriction to trapezoidal sleeve block, with first connecting rod separates with second connecting rod, thereby can smoothly replace the separating mechanism. When need to reinstall second connecting rod, make staff's external force action of annular sleeve vanishing, because the spring elasticity recovery effect promotes L type mobile ring to move upwards to extrude limit ball and reenter trapezoidal sleeve block inside, realize the fixed between first connecting rod and second connecting rod, compared with traditional device, can make maintenance personnel to detach it quickly, directly check and maintain the component that appears the problem, need not waste a lot of time to disassemble entire equipment, greatly shorten the maintenance time, can also avoid the influence of cross contamination or material residue to subsequent separating work due to incomplete cleaning.

[0017] 2. The utility model discloses a motor output shaft will drive first connecting rod rotation, when first connecting rod rotation will drive second connecting rod rotation through transmission mechanism, when second connecting rod rotation will drive third connecting rod start rotation, when third connecting rod starts rotation will drive auger start rotation, when auger starts rotation will drive the airflow containing flame retardant particle high -speed rotation, because the mass difference of solid particle and gas, under the action of centrifugal force, will realize separating effect, compared with traditional device, this device can make the airflow containing flame retardant particle high -speed rotation in the barrel, and solid particle is thrown to the cylinder wall under the centrifugal force and slides along the wall and falls to the collecting cylinder, and the gas is discharged from the exhaust pipe. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model will be further explained in detail in combination with the drawings and specific embodiment.

[0019] Figure 1 It is the front perspective appearance structure schematic diagram of the utility model;

[0020] Figure 2 It is the section structure schematic diagram of the utility model;

[0021] Figure 3 It is the third connecting rod structure schematic diagram of the utility model;

[0022] Figure 4 It is the motor structure schematic diagram of the utility model;

[0023] Figure 5 It is the annular sleeve structure schematic diagram of the utility model;

[0024] Figure 6 It is the limit ball structure schematic diagram of the utility model;

[0025] Figure 7The cross convex block structure schematic diagram of the utility model discloses.

[0026] In the drawing: 1, separation box;2, quick release connector;3, conical cylinder;4, collecting cylinder;5, support;6, motor;7, first connecting rod;8, limiting ring;9, annular sleeve;10, L-shaped moving ring;11, circular groove;12, limiting ball;13, spring;14, second connecting rod;15, trapezoidal sleeve block;16, cross groove;17, cross convex block;18, third connecting rod;19, auger;20, air inlet connecting pipe;21, exhaust pipe;22, observation window;23, annular support frame;24, flexible buffer plate;25, protective cover;26, flexible film. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are involved in the protection scope of the utility model.

[0028] As Figures 1 to 7 shown, embodiment 1, a kind of flame retardant cyclone separator, including separation box 1, separation box 1 and conical cylinder 3 are fixedly connected by quick release connector 2, the bottom of conical cylinder 3 is fixedly installed with collecting cylinder 4, collecting cylinder 4 is fixedly installed with support 5 inside, support 5 is fixedly installed with motor 6 inside and the output shaft of motor 6 extends to conical cylinder 3 inside, the end of the output shaft of motor 6 is fixedly connected with first connecting rod 7, annular sleeve 9 is movably sleeved on the outer surface of first connecting rod 7, limiting ring 8 is fixedly sleeved on the outer surface of first connecting rod 7 and located inside annular sleeve 9, L-shaped moving ring 10 is fixedly sleeved on the inner wall of annular sleeve 9 and located above limiting ring 8, spring 13 is connected between limiting ring 8 and L-shaped moving ring 10, circular groove 11 is arranged on the outer surface of first connecting rod 7 and located above spring 13, and circular groove 11 is evenly spaced in equidistant circumferential array, limiting ball 12 is placed on the inner side of circular groove 11, second connecting rod 14 is movably installed in first connecting rod 7, trapezoidal sleeve block 15 is fixedly sleeved on the outer surface of second connecting rod 14 and located inside circular groove 11 and limiting ball 12, flexible film 26 is fixedly installed on the inner side of circular groove 11 and located between limiting ball 12 and trapezoidal sleeve block 15, and the end of second connecting rod 14 is fixedly connected with separation mechanism.

[0029] When the worker detaches the separation box 1 through the quick release structure of the quick release connector 2, and then makes the annular sleeve 9 slide downward on the surface of the first connecting rod 7 through external force, at this time the L-shaped moving ring 10 will extrude the spring 13 downward, and the L-shaped moving ring 10 makes the extrusion force of the limiting ball 12 on the top disappear, due to the elastic recovery effect of the flexible film 26 fixedly installed on the inner side of the circular groove 11, the limiting ball 12 originally clamped into the inner side of the trapezoidal sleeve block 15 restores to the original position away from the trapezoidal sleeve block 15, and the restriction on the trapezoidal sleeve block 15 is released, so as to separate the second connecting rod 14 from the first connecting rod 7, so that the separation mechanism can be replaced smoothly. When it is necessary to reinstall the second connecting rod 14, the external force of the worker on the annular sleeve 9 disappears, and due to the elastic recovery effect of the spring 13, the L-shaped moving ring 10 is pushed to move upward, so as to extrude the limiting ball 12 to clamp into the inner side of the trapezoidal sleeve block 15 again, so as to fix the first connecting rod 7 and the second connecting rod 14.

[0030] Due to the elastic recovery effect of the flexible film 26 fixedly installed on the inner side of the circular groove 11, the limiting ball 12 originally clamped into the inner side of the trapezoidal sleeve block 15 restores to the original position away from the trapezoidal sleeve block 15, and the restriction on the trapezoidal sleeve block 15 is released, so as to separate the second connecting rod 14 from the first connecting rod 7, so that the separation mechanism can be replaced smoothly. When it is necessary to reinstall the second connecting rod 14, the external force of the worker on the annular sleeve 9 disappears, and due to the elastic recovery effect of the spring 13, the L-shaped moving ring 10 is pushed to move upward, so as to extrude the limiting ball 12 to clamp into the inner side of the trapezoidal sleeve block 15 again, so as to fix the first connecting rod 7 and the second connecting rod 14, compared with the traditional device, the device can make the maintenance personnel quickly detach it, directly check and maintain the problematic parts, without wasting a lot of time to disassemble the entire equipment, greatly shortening the maintenance time, and also avoiding cross contamination or material residue caused by incomplete cleaning affecting the subsequent separation work.

[0031] In embodiment 2, the end of the second connecting rod 14 is fixedly connected with the third connecting rod 18, the third connecting rod 18 extends to the inside of the separation box 1, the motor 6 is fixedly installed in the inside of the support 5, the output shaft of the motor 6 extends to the inside of the conical cylinder 3, the end of the output shaft of the motor 6 is fixedly connected with the first connecting rod 7, the outer surface of the third connecting rod 18 is fixedly installed with the auger 19, the top outer surface of the first connecting rod 7 is fixedly installed with the transmission mechanism, and the first connecting rod 7 and the second connecting rod 14 are driven through the transmission mechanism.

[0032] When the staff starts the motor 6, the output shaft of the motor 6 will drive the first connecting rod 7 to rotate at this time, when the first connecting rod 7 rotates, it will drive the second connecting rod 14 to rotate through the transmission mechanism, when the second connecting rod 14 rotates, it will drive the third connecting rod 18 to start rotating, when the third connecting rod 18 starts to rotate, it will drive the auger 19 to start rotating, when the auger 19 starts to rotate, it will drive the airflow containing fire retardant particles to rotate at high speed, due to the mass difference between solid particles and gas, under the action of centrifugal force, the separation effect will be realized.

[0033] The output shaft of the motor 6 will drive the first connecting rod 7 to rotate, when the first connecting rod 7 rotates, it will drive the second connecting rod 14 to rotate through the transmission mechanism, when the second connecting rod 14 rotates, it will drive the third connecting rod 18 to start rotating, when the third connecting rod 18 starts to rotate, it will drive the auger 19 to start rotating, when the auger 19 starts to rotate, it will drive the airflow containing fire retardant particles to rotate at high speed, due to the mass difference between solid particles and gas, under the action of centrifugal force, the separation effect will be realized. Compared with the traditional device, the device can make the airflow containing fire retardant particles rotate at high speed in the cylinder, and the solid particles are thrown to the cylinder wall under the action of centrifugal force and slide along the wall to the collecting cylinder 4, while the gas is discharged from the exhaust pipe 21.

[0034] In example 3, the top outer surface of the first connecting rod 7 is fixedly installed with a cross protrusion 17, the bottom outer surface of the second connecting rod 14 is provided with a cross groove 16, and the cross protrusion 17 and the cross groove 16 are matched with each other.

[0035] Through the matching of the cross protrusion 17 and the cross groove 16, the first connecting rod 7 and the second connecting rod 14 can be effectively driven, and the insufficient transmission can be avoided.

[0036] In example 4, the inner side of the support 5 is fixedly installed with a protective cover 25 outside the motor 6, and the output shaft of the motor 6 penetrates the protective cover 25.

[0037] By fixing the protective cover 25 on the inner side of the support 5 outside the motor 6, the solid particles in the fire retardant can be prevented from directly impacting the motor 6, thereby protecting the motor 6.

[0038] In example 5, the inner wall of the conical cylinder 3 is fixedly installed with a flexible buffer plate 24, and the flexible buffer plate 24 is in a surrounding shape on the inner wall of the conical cylinder 3.

[0039] By arranging the flexible buffer plate 24 in a surrounding shape on the inner wall of the conical cylinder 3, the solid particles in the fire retardant can be effectively prevented from repeatedly rebounding and impacting, thereby avoiding affecting the separation.

[0040] The outer surface of the separation box 1 is fixedly provided with an air inlet connecting pipe 20, and the air inlet connecting pipe 20 extends to the inside of the separation box 1.

[0041] The air inlet connecting pipe 20 extends to the inside of the separation box 1, so that the airflow containing the fire retardant particles can be effectively transmitted to the inside of the separation box 1.

[0042] The top of the separation box 1 is fixedly provided with an air outlet pipe 21, and the air outlet pipe 21 extends to the inside of the separation box 1.

[0043] The air outlet pipe 21 extends to the inside of the separation box 1, so that the gas can be discharged along the air outlet pipe 21 under the centrifugal force generated by the separation mechanism.

[0044] The outer surface of the separation box 1 is fixedly provided with an observation window 22, and the observation window 22 is transparent.

[0045] The observation window 22 is transparent, so that the staff can conveniently observe the separation condition in the inside of the separation box 1.

[0046] The outer surface of the conical cylinder 3 is fixedly provided with an annular support frame 23, and the annular support frame 23 is wrapped around the outer side of the conical cylinder 3.

[0047] The annular support frame 23 is wrapped around the outer side of the conical cylinder 3, so that the whole device can be effectively supported, and a stable separation environment is provided for the device.

[0048] The bottom of the conical cylinder 3 is fixedly provided with a collecting cylinder 4, and the collecting cylinder 4 is in communication with the conical cylinder 3.

[0049] The collecting cylinder 4 is in communication with the conical cylinder 3, so that the solid particles after separation can be effectively collected, and the solid particles can be prevented from splashing everywhere.

[0050] The working principle and use process of the device are as follows.

[0051] When the worker detaches the separation box 1 through the quick release structure of the quick release connector 2, and then makes the annular sleeve 9 slide downward on the surface of the first connecting rod 7 by external force, at this time, the L-shaped moving ring 10 will extrude the spring 13 downward, and the L-shaped moving ring 10 makes the extrusion force of the limiting ball 12 on the top disappear, due to the elastic recovery effect of the flexible film 26 fixedly installed on the inner side of the circular groove 11, the limiting ball 12 originally clamped into the inner side of the trapezoidal sleeve block 15 restores to the original position away from the trapezoidal sleeve block 15, and the limitation on the trapezoidal sleeve block 15 is released, so as to separate the second connecting rod 14 from the first connecting rod 7, so that the separation mechanism can be replaced smoothly. When it is needed to reinstall the second connecting rod 14, the worker makes the external force on the annular sleeve 9 disappear, and due to the elastic recovery effect of the spring 13, the L-shaped moving ring 10 is pushed to move upward, so as to extrude the limiting ball 12 to clamp into the inner side of the trapezoidal sleeve block 15 again, and the fixing between the first connecting rod 7 and the second connecting rod 14 is realized.

[0052] When the worker starts the motor 6, at this time, the output shaft of the motor 6 will drive the first connecting rod 7 to rotate, when the first connecting rod 7 rotates, the second connecting rod 14 will be driven to rotate through the transmission mechanism, when the second connecting rod 14 rotates, the third connecting rod 18 will start to rotate, when the third connecting rod 18 starts to rotate, the auger 19 will start to rotate, when the auger 19 starts to rotate, the airflow containing the fire retardant particles will rotate at high speed, due to the mass difference between the solid particles and the gas, under the action of centrifugal force, the separation effect will be realized.

[0053] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one from another entity or action without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0054] Although the embodiments of the present application have been shown and described, it should be understood by those ordinary skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

[0055] The above is only a preferred embodiment of the present application, and does not limit the present application, and any modification, equivalent replacement, improvement and the like made within the spirits and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A cyclone for a flame retardant comprising a separation box (1), characterised in that: The separating box (1) and the conical cylinder (3) are fixedly connected through the quick release connector (2), the bottom of the conical cylinder (3) is fixedly installed with a collecting cylinder (4), the inside of the collecting cylinder (4) is fixedly installed with a support (5), the inner side of the support (5) is fixedly installed with a motor (6), and the output shaft of the motor (6) extends to the inside of the conical cylinder (3), the end of the output shaft of the motor (6) is fixedly connected with a first connecting rod (7), the outer surface of the first connecting rod (7) is movably sleeved with an annular sleeve (9), the outer surface of the first connecting rod (7) is fixedly sleeved with a limiting ring (8) located on the inner side of the annular sleeve (9), the inner wall of the annular sleeve (9) is fixedly sleeved with an L-shaped moving ring (10) located above the limiting ring (8), the spring (13) is connected between the limiting ring (8) and the L-shaped moving ring (10), the outer surface of the first connecting rod (7) is provided with a circular groove (11) located above the spring (13), and the circular grooves (11) are uniformly spaced in an equidistant circumferential array, the inner side of the circular groove (11) is placed with a limiting ball (12), the inside of the first connecting rod (7) is movably installed with a second connecting rod (14), the outer surface of the second connecting rod (14) is fixedly sleeved with a trapezoidal sleeve block (15), and the trapezoidal sleeve block (15) is located on the inner side of the circular groove (11) and the limiting ball (12), the inner side of the circular groove (11) is fixedly installed with a flexible film (26), and the flexible film (26) is located between the limiting ball (12) and the trapezoidal sleeve block (15), and the end of the second connecting rod (14) is fixedly connected with a separating mechanism.

2. A cyclone for use with a fire retardant according to claim 1, characterised in that: The separating mechanism comprises that the end of the second connecting rod (14) is fixedly connected with a third connecting rod (18), and the third connecting rod (18) extends to the inside of the separating box (1), the inner side of the support (5) is fixedly installed with a motor (6), and the output shaft of the motor (6) extends to the inside of the conical cylinder (3), the end of the output shaft of the motor (6) is fixedly connected with a first connecting rod (7), the outer surface of the third connecting rod (18) is fixedly installed with a screw conveyor (19), and the top outer surface of the first connecting rod (7) is fixedly installed with a transmission mechanism, and the first connecting rod (7) and the second connecting rod (14) are driven through the transmission mechanism.

3. A cyclone for use with a fire retardant according to claim 2, characterised in that: The transmission mechanism comprises that the top outer surface of the first connecting rod (7) is fixedly installed with a cross convex block (17), and the bottom outer surface of the second connecting rod (14) is provided with a cross groove (16), and the cross convex block (17) and the cross groove (16) are matched with each other.

4. A cyclone separator for fire retardants as claimed in claim 1, wherein: The inner side of the support (5) is fixedly installed with a protective cover (25) on the outer side of the motor (6), and the output shaft of the motor (6) penetrates the protective cover (25).

5. A cyclone separator for fire retardants as claimed in claim 1, wherein: The inner wall of the conical cylinder (3) is fixedly installed with a flexible buffer plate (24), and the flexible buffer plate (24) is in a surrounding shape on the inner wall of the conical cylinder (3).

6. A cyclone separator for fire retardants as claimed in claim 1, wherein: The outer surface of the separating box (1) is fixedly installed with an air inlet connecting pipe (20), and the air inlet connecting pipe (20) extends to the inside of the separating box (1).

7. A cyclone separator for fire retardants as claimed in claim 1, wherein: The top of the separation box (1) is fixedly provided with an exhaust pipe (21) extending into the interior of the separation box (1).

8. A cyclone separator for fire retardants as claimed in claim 1, wherein: The front surface of the separation box (1) is fixedly provided with an observation window (22) in a transparent manner.

9. A cyclone separator for fire retardants as claimed in claim 1, wherein: The outer surface of the conical cylinder (3) is fixedly provided with an annular support frame (23) in a surrounding manner.

10. A cyclone separator for fire retardants as claimed in claim 1, wherein: The bottom of the conical cylinder (3) is fixedly provided with a collecting cylinder (4) in communication with the conical cylinder (3).