Cyclone dust collector for separating silicon dioxide

Abstract

The utility model relates to the technical field of silicon dioxide production, in particular to a cyclone dust collector for separating silicon dioxide, which is used for separating ground silicon dioxide and comprises a main body, a feeding module, a dust collecting module and an air outlet module, the air outlet module comprises a first air outlet pipe and a second air outlet pipe; the second air outlet pipe sleeves the outer side of the first air outlet pipe; and the air flow enhancing mechanism communicates with the dust collecting module and the feeding module, and communicates and conveys enhanced air flow to the dust collecting module and the feeding module. According to the cyclone dust collector for separating silicon dioxide, enhanced airflow is respectively conveyed to the feeding module and the dust collecting module through the airflow enhancing mechanism, so that the overall flow velocity and central ascending airflow are enhanced, and the separation efficiency is accelerated. Meanwhile, the air outlet module with the first air outlet pipe and the second air outlet pipe is adopted, ascending air flow is segmented, silicon dioxide fine particles are further separated, later separation investment is reduced, and cost is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of silicon dioxide production technology, and in particular to a cyclone dust collector for silicon dioxide separation. Background Technology

[0002] High-purity silicon dioxide, as a high-performance silicon material, occupies an indispensable position in high-tech fields due to its excellent physical properties, such as scratch resistance, high temperature resistance, and corrosion resistance. It is widely used in the manufacture of quartz glass, integrated circuit boards, optical fiber communication, polycrystalline silicon, and optical instruments.

[0003] In recent years, with the widespread use of high-purity silica in materials, electronics, and pharmaceuticals, its market demand has become increasingly strong. Currently, in industrial production, high-purity silica needs to be ground using an air jet mill, and the ground silica is then separated and collected by dust removal equipment to separate silica particles of different sizes.

[0004] Currently, the industry mainly uses cyclone separators to separate ground silica. Cyclone separators use centrifugal force to separate material particles from the airflow. Conventional cyclone separators cannot adjust the airflow after installation, making it impossible to control the particle size of the separated material as needed.

[0005] A technical solution has emerged on the market that introduces secondary airflow at the bottom of the dust collector. This solution can enhance the upward airflow in the center, causing coarse particles to separate at the bottom and ensuring the collection rate of coarse particles.

[0006] However, this approach only slightly improves the separation rate and results in low overall separation efficiency. Furthermore, when dealing with silica requiring particle size separation across multiple ranges, multi-stage dust removal is necessary, leading to higher costs and lower separation efficiency. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide a cyclone dust collector for silica separation, which solves the problems of low separation rate, high cost and low separation efficiency of the multi-stage cyclone separator scheme used in existing dust removal equipment.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a cyclone dust collector for separating silica, used to separate ground silica, comprising:

[0009] The main body has separate cavities inside;

[0010] The feeding module is connected to the main body and supplies air to the separation chamber along the tangential direction of the main body;

[0011] The dust collection module is located at the bottom of the main body;

[0012] The air outlet module is located on the top of the main body and extends from the outside of the main body into the separation chamber.

[0013] The air outlet module includes a first air outlet pipe and a second air outlet pipe. The second air outlet pipe is sleeved outside the first air outlet pipe, and the first air outlet pipe and the second air outlet pipe are respectively connected to the outside.

[0014] It also includes an airflow enhancement mechanism, which is connected to the dust collection module and the feeding module respectively, and the airflow enhancement mechanism delivers enhanced airflow to the dust collection module and the feeding module.

[0015] In one embodiment, the feeding module includes a venturi tube and a feeding pipe, with the venturi tube disposed in the middle of the feeding pipe and the feeding pipe disposed at the top of the main body.

[0016] In one embodiment, the second vent pipe and the first vent pipe together form an interval channel. The interval channel is connected to the outside through the first discharge pipe, and the interval channel is connected to the throat of the venturi tube through the control pipe. The control pipe is provided with a first control valve, and the first discharge pipe is provided with a second control valve.

[0017] In one embodiment, a third vent pipe is provided between the first vent pipe and the second vent pipe, and the third vent pipe divides the spacer channel into a first discharge chamber and a second discharge chamber; the first discharge chamber is connected to the control pipeline and the first discharge pipeline, and the second discharge chamber is connected to the outside through the second discharge pipeline.

[0018] In one embodiment, the length of the second vent pipe within the main body is greater than the length of the third vent pipe within the main body.

[0019] In one embodiment, the second vent pipe includes a cylindrical section and a diffuser section. The cylindrical section is connected to the main body, and the diffuser section extends gradually from the bottom of the cylindrical section in a vertical direction toward the inner surface of the main body.

[0020] In one embodiment, a contraction section is provided between the cylindrical section and the diffusion section.

[0021] In one embodiment, the diameter at the smallest point of the contraction section is larger than the diameter of the third outlet pipe.

[0022] In one embodiment, the airflow enhancement mechanism includes a blower and an air supply duct, the air supply duct being connected to a dust collection module and a venturi tube, and a third control valve being provided on the air supply duct.

[0023] In one embodiment, the air supply duct is connected to the throat of the venturi tube; the air supply duct is arranged around the dust collection module and the airflow delivered by the air supply duct to the separation chamber converges at the axis of the main body.

[0024] The beneficial effects of this utility model are as follows: The cyclone dust collector for silica separation provided by this utility model delivers enhanced airflow to the feeding module and dust collection module through an airflow enhancement mechanism, thereby strengthening the overall flow rate and the central rising airflow and accelerating the separation efficiency. At the same time, the air outlet module with a first air outlet pipe and a second air outlet pipe is used to divide the rising airflow and further separate the fine silica particles, reducing the need for subsequent separation inputs and effectively reducing costs. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0027] Figure 2 A schematic diagram of an embodiment of this utility model with a third air outlet pipe;

[0028] Figure 3 A schematic diagram of an embodiment in which a diffuser section is provided in the second outlet pipe of this utility model;

[0029] Figure 4 This is a schematic diagram of an embodiment of the present invention in which a constriction section is provided in the second air outlet pipe.

[0030] Label Explanation:

[0031] 1. Cyclone dust collector for silica separation; 11. Main body; 111. Separation chamber; 112. Straight cylindrical section; 113. Conical structure; 12. Feeding module; 121. Feeding pipe; 122. Venturi tube; 1221. Throat; 13. Dust collection module; 14. Air outlet module; 141. First air outlet pipe; 142. Second air outlet pipe; 1421. Cylindrical section; 1422. Diffusion section; 1423. Contraction section; 143. Third air outlet pipe; 144. Spacing channel; 1441. First discharge chamber; 1442. Second discharge chamber; 145. Control pipeline; 1451. First control valve; 146. First discharge pipeline; 1461. Second control valve; 147. Second discharge pipeline; 15. Airflow enhancement mechanism; 151. Blower; 152. Air supply pipeline; 153. Third control valve. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] In the description of this utility model, it should be noted that the terminology... " center ” Vertical ” Horizontal ” "superior ” "Down ” "forward ” "back ” "Left ” "right ” Vertical ” "level ” "top ” "end ” "Inside ” "outside ” The orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terminology... " First ” "second ” Used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] Please refer to Figures 1 to 4 A cyclone dust collector 1 for separating silica is disclosed, used to separate ground silica, comprising: a main body 11, a feeding module 12, a dust collection module 13, and an exhaust module 14. The main body 11 is generally conical in shape 113, with a straight cylindrical section 112 at the top, and a separation chamber 111 inside. The feeding module 12 is connected to the straight cylindrical section 112 of the main body 11 and supplies air tangentially to the separation chamber 111. The dust collection module 13 is located at the bottom of the conical structure 113 of the main body 11 and collects settled coarse silica particles. The exhaust module 14 is located at the top of the straight cylindrical section 112 of the main body 11 and extends from the outside of the main body 11 into the separation chamber 111. Specifically, the portion of the exhaust module 14 extending into the separation chamber 111 does not exceed the straight cylindrical section 112.

[0035] The air outlet module 14 includes a first air outlet pipe 141 and a second air outlet pipe 142. The second air outlet pipe 142 is sleeved outside the first air outlet pipe 141, and the first air outlet pipe 141 and the second air outlet pipe 142 are respectively connected to the outside. That is, the first air outlet pipe 141 is located inside the second air outlet pipe 142. The central rising airflow is divided into inner and outer parts at the first air outlet pipe 141 and the second air outlet pipe 142. The inner airflow is transported to the next process by the first air outlet pipe 141, and the outer airflow flows along the second air outlet pipe 142.

[0036] It also includes an airflow enhancement mechanism 15, which is connected to both the dust collection module 13 and the feeding module 12. The airflow enhancement mechanism 15 supplies enhanced airflow to both the dust collection module 13 and the feeding module 12. Specifically, the airflow enhancement mechanism 15 can be connected to an external air supply device to provide compressed gas to the dust collection module 13 and the feeding module 12. The enhanced airflow at the feeding module 12 accelerates the airflow in the feeding module 12, increasing centrifugal force and accelerating the overall velocity of the material airflow, thereby improving the overall separation efficiency. The enhanced airflow at the dust collection module 13 enhances the central rising airflow, keeping it stable, thus separating it at the discharge module and enhancing the separation effect.

[0037] It is understood that the cyclone dust collector 1 for silica separation provided by this utility model delivers enhanced airflow to the feeding module 12 and the dust collection module 13 respectively through the airflow enhancement mechanism 15, thereby strengthening the overall flow rate and the central rising airflow and accelerating the separation efficiency. At the same time, the air outlet module 14 with a first air outlet pipe 141 and a second air outlet pipe 142 is used to divide the rising airflow and further separate the fine silica particles, reducing the need for subsequent separation input and effectively reducing costs.

[0038] In one embodiment, the feeding module 12 includes a venturi tube 122 and a feed pipe 121. The venturi tube 122 is located in the middle of the feed pipe 121, and the feed pipe 121 is located at the top of the main body 11. The venturi tube 122 is positioned in the middle section of the feed pipe 121, and the material airflow is accelerated through the venturi tube 122 before entering the separation chamber 111. This configuration allows for the acceleration of the material airflow through a mechanical structure, eliminating the need for additional power, resulting in low cost and convenient maintenance.

[0039] In one embodiment, the second vent pipe 142 and the first vent pipe 141 together form an interval channel 144. The interval channel 144 is connected to the outside through a first discharge pipe 146, and the interval channel 144 is connected to the throat of the venturi tube 122 through a control pipe 145. A first control valve 1451 is provided on the control pipe 145, and a second control valve 1461 is provided on the first discharge pipe 146. That is, the area between the second vent pipe 142 and the first vent pipe 141 is the interval channel 144. After the central rising airflow moves to the interval channel 144, it flows to the subsequent section or the venturi tube 122 through the first discharge pipe 146 or the control pipe 145. The interval channel 144 is connected to the throat of the venturi tube 122 via the control pipe 145. The airflow velocity is high and the pressure is low in the throat section of the venturi tube 122, which generates suction on the interval channel 144, thereby strengthening the attraction of the exhaust module 14, thus accelerating the longitudinal airflow rate and improving the separation efficiency. The first control valve 1451 and the second control valve 1461 control the flow direction of the airflow in the interval channel 144, allowing the operator to select whether to separate fine particles or enhance the separation efficiency as needed, improving the adjustability of the device.

[0040] In one embodiment, a third vent pipe 143 is provided between the first vent pipe 141 and the second vent pipe 142. The third vent pipe 143 divides the spacer channel 144 into a first discharge chamber 1441 and a second discharge chamber 1442. The first discharge chamber 1441 is connected to the control pipe 145 and the first discharge pipe 146, and the second discharge chamber 1442 is connected to the outside through the second discharge pipe 147. The provision of the third vent pipe 143 allows the operator to simultaneously enhance longitudinal suction and separate fine particles of material as needed, further improving the overall adjustability of the device.

[0041] Preferably, the diameter ratio of the first exhaust pipe 141, the second exhaust pipe 142, and the third exhaust pipe 143 is 1:3 to 6:2 to 3, with the diameter of the second exhaust pipe 142 being larger than that of the third exhaust pipe 143. This configuration ensures that the exhaust module 14 receives as much of the central rising airflow as possible without interfering with the separation of the material airflow, thus guaranteeing the stability of the airflow inside the separation chamber 111.

[0042] In one embodiment, the length of the second exhaust pipe 142 within the main body 11 is greater than the length of the third exhaust pipe 143 within the main body 11. This arrangement ensures that the central rising airflow can be received entirely by the second exhaust pipe 142, preventing the first exhaust pipe 141 from being cut off and affecting the separation of the overall airflow, thus ensuring a stable separation effect.

[0043] In one embodiment, the second vent pipe 142 includes a cylindrical section 1421 and a diffuser section 1422. The cylindrical section 1421 is connected to the main body 11, and the diffuser section 1422 extends gradually from the bottom of the cylindrical section 1421 towards the inner surface of the main body 11 in a vertical direction. Specifically, the second vent pipe 142 does not exceed the straight cylindrical section 112 of the main body 11 to avoid the second vent pipe 142 affecting the spiral flow of the material airflow along the inner wall of the main body 11. The diffuser section 1422 is generally funnel-shaped, which enhances the receiving capacity of the second vent pipe 142 for the central rising airflow. At the same time, the diffuser section 1422 gradually compresses the space inside the separation chamber 111, so that the material airflow is compressed when passing through the outside of the diffuser section 1422. The material airflow is compressed and diffused in the longitudinal direction, forming a longitudinal acceleration and increasing the longitudinal flow rate, thereby improving the separation efficiency. Preferably, the third air outlet pipe 143 is arranged correspondingly to the second air outlet pipe 142, so that the third air outlet pipe 143 can more evenly separate the central rising airflow and ensure the separation effect of fine particles of material.

[0044] In one embodiment, a converging section 1423 is provided between the cylindrical section 1421 and the diffuser section 1422. This arrangement makes the second exhaust pipe 142 form a Venturi structure, which accelerates the central rising airflow and further improves the separation efficiency.

[0045] In one embodiment, the diameter at the smallest point of the contraction section 1423 is larger than the diameter of the third vent pipe 143. This arrangement ensures that the first discharge chamber 1441 is not blocked by the third vent pipe 143, avoids back-mixing of the central rising airflow inside the second vent pipe 142, and ensures stable separation performance.

[0046] In one embodiment, the airflow enhancement mechanism 15 includes a blower 151 and an air supply duct 152. The air supply duct 152 is connected to the dust collection module 13 and the venturi tube 122, and a third control valve 153 is provided on the air supply duct 152. This arrangement allows the operator to control the blower 151 to supply air to the dust collection module 13 or the venturi tube 122 respectively through the third control valve 153. Depending on actual needs, different airflow cycles can be formed in the separation chamber 111 in conjunction with the first control valve 1451 or the second control valve 1461, thereby improving the overall adjustability of the device.

[0047] In one embodiment, the air supply duct 152 is connected to the throat 1221 of the venturi tube 122; the air supply duct 152 is arranged around the dust collection module 13, and the airflow delivered by the air supply duct 152 to the separation chamber 111 converges at the axis of the main body 11. This arrangement allows the material airflow and the enhanced airflow to mix evenly, ensuring an acceleration effect on the material airflow. At the same time, the enhanced airflow at the bottom converges at the axis of the main body 11, ensuring that the enhanced airflow does not disperse the spiral formed by the material airflow flowing along the main body 11, thus ensuring a stable separation effect.

[0048] Specifically, the air supply duct 152 is connected to the dust collection module 13 through the air supply nozzles. At least three air supply nozzles are arranged at intervals around the dust collection module 13. The air supply nozzles are inclined to the horizontal plane, and the enhanced airflows ejected from the air supply nozzles converge at the axis of the main body 11.

[0049] Please refer to Figures 1 to 4 Embodiment 1 of this utility model is: a cyclone dust collector 1 for separating silica, used to separate ground silica, comprising:

[0050] The main body 11 has a separate cavity 111 inside;

[0051] The feeding module 12 is connected to the main body 11 and supplies air to the separation chamber 111 along the tangential direction of the main body 11;

[0052] Dust collection module 13 is located at the bottom of the main body 11;

[0053] The air outlet module 14 is located on the top of the main body 11 and extends from the outside of the main body 11 into the separation cavity 111;

[0054] The air outlet module 14 includes a first air outlet pipe 141 and a second air outlet pipe 142. The second air outlet pipe 142 is sleeved on the outside of the first air outlet pipe 141. The first air outlet pipe 141 and the second air outlet pipe 142 are respectively connected to the outside.

[0055] It also includes an airflow enhancement mechanism 15, which is connected to the dust collection module 13 and the feeding module 12 respectively. The airflow enhancement mechanism 15 delivers enhanced airflow to the dust collection module 13 and the feeding module 12.

[0056] The feeding module 12 includes a venturi tube 122 and a feed pipe 121. The venturi tube 122 is located in the middle of the feed pipe 121, and the feed pipe 121 is located at the top of the main body 11. The second vent pipe 142 and the first vent pipe 141 together form an interval channel 144. The interval channel 144 is connected to the outside through the first discharge pipe 146, and the interval channel 144 is connected to the throat of the venturi tube 122 through the control pipe 145. The control pipe 145 is equipped with a first control valve 1451, and the first discharge pipe 146 is equipped with a second control valve 1461. A third vent pipe 143 is provided between the first vent pipe 141 and the second vent pipe 142. The third vent pipe 143 divides the partition channel 144 into a first discharge chamber 1441 and a second discharge chamber 1442. The first discharge chamber 1441 is connected to the control pipe 145 and the first discharge pipe 146, and the second discharge chamber 1442 is connected to the outside through the second discharge pipe 147.

[0057] In this embodiment, the second vent pipe 142 includes a cylindrical section 1421 and a diffuser section 1422. The cylindrical section 1421 is connected to the main body 11, and the diffuser section 1422 extends gradually from the bottom of the cylindrical section 1421 along a vertical direction towards the inner surface of the main body 11. A contraction section 1423 is provided between the cylindrical section 1421 and the diffuser section 1422. The length of the second vent pipe 142 within the main body 11 is greater than the length of the third vent pipe 143 within the main body 11. The diameter ratio of the first vent pipe 141, the second vent pipe 142, and the third vent pipe 143 is 1:4:2.

[0058] In this embodiment, the airflow enhancement mechanism 15 includes a blower 151 and an air supply duct 152. The air supply duct 152 is connected to the dust collection module 13 and the venturi tube 122. A third control valve 153 is provided on the air supply duct 152. The air supply duct 152 is connected to the throat 1221 of the venturi tube 122. The air supply duct 152 is connected to the dust collection module 13 through air supply nozzles. Three air supply nozzles are arranged at intervals around the dust collection module 13. The air supply nozzles are inclined at 30° to the horizontal plane. The enhanced airflow ejected from the air supply nozzles converges at the axis of the main body 11.

[0059] The working principle of this utility model is as follows: When it is necessary to separate two-stage silica fine particles, the operator opens the first control valve 1451 and closes the second control valve 1461. The first discharge chamber 1441 is connected to the throat 1221 of the venturi tube 122, and the airflow enhancement mechanism 15 only supplies air to the dust collection module 13. After the setup is completed, the operator introduces the material airflow, which spirals downward along the inner wall of the main body 11, separating the coarse particles into the dust collection module 13. The fine particles rise with the central rising airflow, which is guided, accelerated, and received by the second air outlet pipe 142. Then, it is separated by the first air outlet pipe 141 and the third air outlet pipe 143 and enters the first discharge chamber 1441, the second discharge chamber 1442, and the first air outlet pipe 141. The fine particles in the second discharge chamber 1442 and the first air outlet pipe 141 are separated and discharged to the subsequent process. The airflow in the first discharge chamber 1441 flows along the control pipeline 145 to the venturi tube 122, forming a circulation loop. When it is necessary to separate three grades of fine silica particles, the operator opens the second control valve 1461 and closes the first control valve 1451. The first discharge chamber 1441 is connected to the subsequent processing section, and the airflow enhancement mechanism 15 sends air to the dust collection module 13 and the venturi tube 122. The enhanced airflow strengthens the material airflow and the central rising airflow. The fine particles in the central rising airflow are separated and enter the first discharge chamber 1441, the second discharge chamber 1442, and the first air outlet pipe 141, completing the separation and being discharged to the subsequent processing section. During the production process, the operator can adjust the first control valve 1451, the second control valve 1461, and the third control valve 153 in real time as needed, thereby adjusting the particle size of the silica particles finally separated by the dust collection module 13, the first discharge chamber 1441, the second discharge chamber 1442, and the first air outlet pipe 141.

[0060] Although this document uses numerous terms such as main body, separation chamber, straight section, conical structure, feeding module, feeding pipe, venturi tube, throat, dust collection module, air outlet module, first air outlet pipe, second air outlet pipe, cylindrical section, diffusion section, contraction section, third air outlet pipe, interval channel, first discharge chamber, second discharge chamber, control pipeline, first control valve, first discharge pipeline, second control valve, second discharge pipeline, airflow enhancement mechanism, blower, air supply pipeline, and third control valve, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A cyclone dust collector (1) for separating silica, characterized in that, include: The main body (11) has a separate cavity (111) inside. The feeding module (12) is connected to the main body (11) and supplies air to the separation chamber (111) along the tangential direction of the main body (11); A dust collection module (13) is disposed at the bottom of the main body (11); An air outlet module (14) is disposed on the top of the main body (11) and extends from the outside of the main body (11) into the separation cavity (111); The air outlet module (14) includes a first air outlet pipe (141) and a second air outlet pipe (142). The second air outlet pipe (142) is sleeved on the outside of the first air outlet pipe (141). The first air outlet pipe (141) and the second air outlet pipe (142) are respectively connected to the outside. It also includes an airflow enhancement mechanism (15), which is connected to the dust collection module (13) and the feeding module (12) respectively. The airflow enhancement mechanism (15) delivers enhanced airflow to the dust collection module (13) and the feeding module (12).

2. The cyclone dust collector (1) for silica separation according to claim 1, characterized in that: The feeding module (12) includes a venturi tube (122) and a feeding pipe (121). The venturi tube (122) is located in the middle of the feeding pipe (121), and the feeding pipe (121) is located at the top of the main body (11).

3. The cyclone dust collector (1) for silica separation according to claim 2, characterized in that: The second vent pipe (142) and the first vent pipe (141) together form an interval channel (144). The interval channel (144) is connected to the outside through the first discharge pipe (146), and the interval channel (144) is connected to the throat of the venturi tube (122) through the control pipe (145). The control pipe (145) is provided with a first control valve (1451), and the first discharge pipe (146) is provided with a second control valve (1461).

4. The cyclone dust collector (1) for silica separation according to claim 3, characterized in that: A third vent pipe (143) is provided between the first vent pipe (141) and the second vent pipe (142). The third vent pipe (143) divides the interval channel (144) into a first discharge chamber (1441) and a second discharge chamber (1442). The first discharge chamber (1441) is connected to the control pipeline (145) and the first discharge pipeline (146). The second discharge chamber (1442) is connected to the outside through the second discharge pipeline (147).

5. The cyclone dust collector (1) for silica separation according to claim 4, characterized in that: The length of the second vent pipe (142) within the main body (11) is greater than the length of the third vent pipe (143) within the main body (11).

6. The cyclone dust collector (1) for silica separation according to claim 4, characterized in that: The second vent pipe (142) includes a cylindrical section (1421) and a diffuser section (1422). The cylindrical section (1421) is connected to the main body (11), and the diffuser section (1422) extends gradually from the bottom of the cylindrical section (1421) in a vertical direction to the inner surface of the main body (11).

7. The cyclone dust collector (1) for silica separation according to claim 6, characterized in that: A contraction section (1423) is provided between the cylindrical section (1421) and the diffusion section (1422).

8. The cyclone dust collector (1) for silica separation according to claim 7, characterized in that: The diameter of the smallest part of the contraction section (1423) is greater than the diameter of the third vent pipe (143).

9. The cyclone dust collector (1) for silica separation according to claim 2, characterized in that: The airflow enhancement mechanism (15) includes a blower (151) and an air supply duct (152). The air supply duct (152) is connected to the dust collection module (13) and the venturi tube (122). A third control valve (153) is provided on the air supply duct (152).

10. The cyclone dust collector (1) for silica separation according to claim 9, characterized in that: The air supply duct (152) is connected to the throat (1221) of the Venturi tube (122); the air supply duct (152) is arranged around the dust collection module (13) and the airflow delivered by the air supply duct (152) to the separation chamber (111) converges at the axis of the main body (11).

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