A gas-solid separator of a three-stage separator

Abstract

This utility model relates to the technical field of cyclone separators, and more particularly to a three-stage gas-solid separator, comprising a cylindrical body, an end cap fixedly connected to the upper end of the cylindrical body, a partition fixedly installed on the inner ring of the end cap, an air inlet pipe penetrating the upper surface of the end cap, and a connecting cylinder fixedly installed at one end of the air inlet pipe penetrating the partition. Airflow holes are evenly spaced on the surface of the connecting cylinder, and a mounting base is integrally formed on the upper surface of the partition. In this three-stage gas-solid separator, one end of the air outlet pipe extends into the air outlet cylinder. When the swirling gas enters the air outlet pipe, it rises along the spiral rod and contacts the non-woven fabric filter, filtering out fine dust impurities. Then, the air containing particulate impurities enters the separator tangentially through the air inlet, creating a rotational motion. Simultaneously, the air propels a scraper to rotate, causing the scraper to rotate along the inner wall of the separator, scraping away the particles adsorbed on the inner wall.

Description

Technical Field

[0001] This utility model relates to the technical field of cyclone separators, and in particular to a gas-solid separator with a three-stage separator. Background Technology

[0002] In chemical production processes, many reactions produce gases containing solid catalyst particles or byproducts. Three-stage gas-solid separators can separate these solid particles, recover the catalyst to improve reaction efficiency, and ensure the normal operation of subsequent processes and product quality. A common separation device is the cyclone separator, which is simple in structure, easy to operate, and has high separation efficiency. It is suitable for separating solid particles with larger diameters. It utilizes the centrifugal force generated by the rotation of airflow to separate solid particles from the gas. It is widely used in chemical, power, and metallurgical industries. Dust-laden gas enters the cyclone separator and rotates. Under the action of centrifugal force, solid particles are thrown against the outer wall of the separator and then slide down the wall to the bottom for discharge, while the gas is discharged from the center. The cyclone separator is a typical device that uses centrifugal force for gas-solid separation. In many three-stage separation systems, the cyclone separator is often used as a key separation unit, utilizing its high-efficiency centrifugal separation characteristics to perform preliminary fine separation of solid particles in gases or liquids, creating favorable conditions for subsequent higher-level separation. For example, in some three-stage separation processes for industrial waste gas treatment, the first two stages may perform coarse separation and pretreatment, while the third stage uses a cyclone separator to further remove finer particles remaining in the waste gas, thereby improving the degree of waste gas purification. Therefore, a gas-solid separator with three stages is needed.

[0003] In existing three-stage gas-solid separators, when solid particles are separated by a cyclone separator, the solid particles are thrown towards the outer wall of the separator due to the centrifugal force generated. They then slide down the wall and are discharged to the bottom. Some smaller solid particles are also adsorbed on the wall of the separator, and some smaller particles also rise with the central vortex, making complete separation impossible.

[0004] To address the aforementioned issues, a search revealed a patent with publication number CN219150438U that discloses a cyclone separator. The patent states that "the inner shell is connected to the outer shell and located within the containment space. The side of the inner shell protrudes outward to form a spiral vane. A gap exists between the outer edge of the spiral vane and the wall of the containment space, allowing separated impurities to fall. The opening of the air intake channel faces the spiral vane to guide the airflow towards it. The spiral vane is used to guide the gas flowing in from the air intake channel to form a vortex to separate impurities from the gas." While the spiral vane can guide the gas flowing in from the air intake channel to form a vortex, its structure also causes some particles to adhere to the spiral structure of the vane. This is especially true for the gas initially entering the shell, which contains a higher particle content, making it easier for particles to accumulate and prevent downward separation, leading to increased internal particle accumulation.

[0005] In light of this, research was conducted on the aforementioned issues, leading to this case. Utility Model Content

[0006] The purpose of this invention is to provide a three-stage gas-solid separator to solve the problem mentioned in the background art. In the existing three-stage gas-solid separators, when solid particles are separated by a cyclone separator, due to the generation of centrifugal force, the solid particles are thrown towards the outer wall of the separator and then slide down the wall to the bottom for discharge. Some smaller solid particles are also adsorbed on the wall of the separator, and some smaller particles also rise with the central vortex, making complete separation impossible.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a gas-solid separator for a three-stage separator, comprising a cylindrical body, an end cap fixedly connected to the upper end of the cylindrical body, a partition plate fixedly installed on the inner ring of the end cap, an air inlet pipe penetrating the upper surface of the end cap, a connecting cylinder fixedly installed at one end of the air inlet pipe penetrating the partition plate, airflow holes evenly spaced on the surface of the connecting cylinder, an integrally formed mounting base on the upper surface of the partition plate, an air outlet cylinder fixedly installed on the upper surface of the mounting base, and an air outlet hole opened on the surface of the air outlet cylinder. A connecting rod is fixedly installed on the inner side of the air outlet cylinder. A non-woven fabric filter screen is fixedly fitted around the outer ring of the connecting rod. An air outlet pipe passes through the surface of the partition. One end of the air outlet pipe passes through and is fixedly connected to a separation cylinder. A dust collection chamber is fixedly connected to the lower end of the separation cylinder. A support frame is fixedly installed on the upper inner side of the dust collection chamber. A fixed shaft passes through and is fixedly connected to one end of the support frame. A ring is connected to the outer ring bearing of the fixed shaft. A connecting block is fixedly installed on the outer ring surface of the ring. A scraper is fixedly connected to the upper surface of the connecting block.

[0008] Preferably, a flange connection pipe for gas discharge is provided on one side of the upper surface of the end cap, and the surface of the partition plate has a porous structure, with the opening positions corresponding one-to-one with the mounting base positions.

[0009] Preferably, a conical block is fixedly installed on the lower inner surface of the connecting cylinder, a guide plate is welded to the outer surface of the conical block, a hemisphere is integrally formed on the upper part of the conical block, and the guide plates are distributed sequentially on both sides of the airflow hole.

[0010] Preferably, a helical rod is fixedly connected to the lower end of the connecting rod, and one end of the helical rod extends into the inside of the air outlet pipe.

[0011] Preferably, the separator is composed of a straight cylinder and a conical cylinder, and an air inlet is integrally formed on one side of the separator. The separator is fixedly connected to one end of the airflow hole through the air inlet.

[0012] Preferably, one end of the air outlet pipe passes through the mounting base and the lower end of the air outlet cylinder, and the upper end of the air outlet pipe abuts against the lower end of the non-woven fabric filter.

[0013] Preferably, the scraper consists of a straight plate and an inclined plate, both of which are L-shaped structures, and one side of the scraper is attached to the inner wall surface of the separation cylinder.

[0014] Preferably, a conical cover is fixedly installed at the upper end of the fixed shaft, and a discharge pipe is fixedly connected to the lower end of the dust collection bin.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: The gas-solid separator of this three-stage separator extends one end of the outlet pipe into the outlet cylinder. When the swirling gas enters the outlet pipe, it rises along the spiral rod and comes into contact with the non-woven fabric filter screen to filter out micro dust impurities. Then, it diffuses through the outlet hole to the space between the cylinder and the partition plate, and can then be discharged through the flange pipe on the cylinder. Secondly, when the air containing particulate impurities enters the separation cylinder tangentially through the inlet port, it forms a rotational motion. At the same time, the air push drives the scraper to rotate. The scraper rotates along the inner wall of the separation cylinder, scraping off the particles adsorbed on the inner wall. Moreover, due to the L-shaped structure, it can form a barrier while scraping off the particles, allowing the particles to fall down along the scraper into the dust collection bin below, and then be discharged through the discharge pipe to the inner side of the cylinder, and then discharged through the conical opening at the bottom of the cylinder. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the external structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the cylinder and the separation cylinder of this utility model;

[0018] Figure 3This is a schematic diagram of the cross-sectional structure of the end cap of this utility model;

[0019] Figure 4 This is a schematic diagram of the interlocking structure of the connecting cylinder and the guide plate of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the air outlet cylinder and the screw rod that cooperate with each other in this utility model;

[0021] Figure 6 This is a schematic diagram of the cross-sectional structure of the separation cylinder of this utility model.

[0022] In the diagram: 1. Cylinder; 2. End cap; 3. Partition plate; 4. Air inlet pipe; 5. Connecting cylinder; 6. Airflow hole; 7. Conical block; 8. Guide plate; 9. Hemisphere; 10. Mounting base; 11. Air outlet pipe; 12. Air outlet hole; 13. Connecting rod; 14. Non-woven filter screen; 15. Spiral rod; 16. Air outlet pipe; 17. Separating cylinder; 18. Air inlet interface; 19. Dust collection bin; 20. Support frame; 21. Fixed shaft; 22. Ring; 23. Connecting block; 24. Scraper; 25. Conical cover; 26. Discharge pipe. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-6 This utility model provides a technical solution: a three-stage gas-solid separator, including a cylinder 1, an end cap 2 fixedly connected to the upper end of the cylinder 1, a partition 3 fixedly installed on the inner ring of the end cap 2, an air inlet pipe 4 penetrating the upper surface of the end cap 2, a connecting cylinder 5 fixedly installed at one end of the air inlet pipe 4 penetrating the partition 3, airflow holes 6 evenly spaced on the surface of the connecting cylinder 5, an integrally formed mounting base 10 on the upper surface of the partition 3, an air outlet cylinder 11 fixedly installed on the upper surface of the mounting base 10, an air outlet hole 12 opened on the surface of the air outlet cylinder 11, and an air outlet hole 12 fixed on the inner side of the air outlet cylinder 11. A connecting rod 13 is fixedly installed, and a non-woven filter screen 14 is fixedly fitted around the outer ring of the connecting rod 13. An air outlet pipe 16 passes through the surface of the partition 3. One end of the air outlet pipe 16 passes through and is fixedly connected to a separation cylinder 17. A dust collection bin 19 is fixedly connected to the lower end of the separation cylinder 17. A support frame 20 is fixedly installed on the upper inner side of the dust collection bin 19. A fixed shaft 21 passes through and is fixedly connected to one end of the support frame 20. A ring 22 is connected to the outer ring bearing of the fixed shaft 21. A connecting block 23 is fixedly installed on the outer ring surface of the ring 22. A scraper 24 is fixedly connected to the upper surface of the connecting block 23.

[0025] Furthermore, a flange connection pipe for gas discharge is provided on one side of the upper surface of the end cover 2. The surface of the partition 3 has a porous structure, and the opening positions correspond one-to-one with the positions of the mounting base 10. Through the setting of the end cover 2, the flange connection pipe set on the upper surface of the end cover 2 adopts the standard flange specification, which facilitates quick connection with external pipelines. At the same time, the end cover 2 and the partition 3 form a closed cavity, which is only for the flow of impurity-removing gas.

[0026] Furthermore, a conical block 7 is fixedly installed on the lower inner surface of the connecting cylinder 5, and a guide plate 8 is welded to the outer surface of the conical block 7. A hemisphere 9 is integrally formed on the upper part of the conical block 7. The guide plates 8 are distributed sequentially on both sides of the airflow hole 6. Through the setting of the conical block 7, the conical block 7 and the guide plate 8 form a graded airflow guiding system. The tilt angle of the conical block 7 guides the airflow to diffuse downwards, and the guide plate 8 accurately guides the airflow to the airflow hole 6. The streamlined design of the hemisphere 9 eliminates the central vortex.

[0027] Furthermore, a spiral rod 15 is fixedly connected to the lower end of the connecting rod 13. One end of the spiral rod 15 extends into the inside of the air outlet pipe 16. Through the setting of the spiral rod 15, the spiral rod 15 can further guide the internally rotating airflow to rise and guide the airflow to disengage from the non-woven filter screen 14.

[0028] Furthermore, the separator 17 is composed of a straight cylinder and a conical cylinder. An air inlet 18 is integrally formed on one side of the separator 17. The separator 17 is fixedly connected to one end of the airflow hole 6 through the air inlet 18. With the setting of the separator 17, the spiral airflow formed in the straight cylinder section can generate centrifugal force, and the conical section accelerates particle sedimentation.

[0029] Furthermore, one end of the air outlet pipe 16 passes through the mounting base 10 and the lower end of the air outlet cylinder 11, and the upper end of the air outlet pipe 16 abuts against the lower end of the non-woven fabric filter screen 14. Through the setting of the non-woven fabric filter screen 14, micro dust particles and impurities in the gas can be filtered.

[0030] Furthermore, the scraper 24 is composed of a straight plate and an inclined plate, both of which are L-shaped structures. One side of the scraper 24 is attached to the inner wall surface of the separation cylinder 17. Through the arrangement of the scraper 24, the scraper 24 can scrape off the particles on the inner wall of the separation cylinder 17 by rotating the airflow.

[0031] Furthermore, a conical cover 25 is fixedly installed on the upper end of the fixed shaft 21, and a discharge pipe 26 is fixedly connected to the lower end of the dust collection bin 19. Through the setting of the conical cover 25, the conical cover 25 can guide the particles to slide down.

[0032] Working principle: First, the gas containing particulate impurities enters the connecting cylinder 5 through the inlet pipe 4. The conical block 7 and the guide plate 8 on the inner side of the connecting cylinder 5 guide and distribute the airflow, so that the gas enters the separation cylinder 17 tangentially through the airflow hole 6 evenly. The guide plate 8 is distributed on both sides of the airflow hole 6 to ensure uniform airflow distribution. When the gas enters the separation cylinder 17 through the inlet port 18, it forms a rotational motion that generates centrifugal force, causing solid particles to be thrown against the inner wall of the separation cylinder 17. At the same time, the rotating airflow pushes the scraper 24 to rotate around the fixed shaft 21. The L-shaped scraper 24 scrapes off the adsorbed particles as it rotates against the inner wall, and guides the particles downward into the dust collection chamber 19 through the inclined plate. The gas after preliminary purification rises through the exhaust pipe 16, and the spiral rod 15 guides the gas to form a spiral upward airflow, which enhances the separation effect. The gas then impacts the non-woven filter screen 14 for secondary filtration. After the dust is intercepted, the clean gas is discharged through the exhaust hole 12 of the exhaust cylinder 11. The particles collected in the dust collection chamber 19 return to the bottom of the cylinder 1 through the discharge pipe 26, and are finally discharged in a concentrated manner through the conical opening.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A three-stage gas-solid separator, comprising a cylindrical body (1), characterized in that: An end cap (2) is fixedly connected to the upper end of the cylinder (1). A partition (3) is fixedly installed on the inner ring of the end cap (2). An air inlet pipe (4) passes through the upper surface of the end cap (2). A connecting cylinder (5) is fixedly installed at one end of the air inlet pipe (4) that passes through the partition (3). Air flow holes (6) are evenly spaced on the surface of the connecting cylinder (5). An integral mounting base (10) is formed on the upper surface of the partition (3). An air outlet cylinder (11) is fixedly installed on the upper surface of the mounting base (10). An air outlet hole (12) is opened on the surface of the air outlet cylinder (11). A connecting rod (13) is fixedly installed on the inner side of the air outlet cylinder (11). 13) The outer ring is fitted with a non-woven filter screen (14), the surface of the partition (3) is penetrated by an air outlet pipe (16), one end of the air outlet pipe (16) is penetrated and fixedly connected to a separation cylinder (17), the lower end of the separation cylinder (17) is fixedly connected to a dust collection chamber (19), a support frame (20) is fixedly installed on the upper inner side of the dust collection chamber (19), one end of the support frame (20) is fixedly connected to a fixed shaft (21), the outer ring bearing of the fixed shaft (21) is connected to a ring (22), the outer ring surface of the ring (22) is fixedly installed with a connecting block (23), and the upper surface of the connecting block (23) is fixedly connected to a scraper (24).

2. The gas-solid separator of a three-stage separator according to claim 1, characterized in that: The upper surface of the end cap (2) is provided with a flange connection pipe for gas discharge, and the surface of the partition (3) has a porous structure, and the opening position corresponds one-to-one with the position of the mounting base (10).

3. The gas-solid separator of a three-stage separator according to claim 1, characterized in that: A conical block (7) is fixedly installed on the lower inner surface of the connecting cylinder (5). A guide plate (8) is welded to the outer surface of the conical block (7). A hemisphere (9) is integrally formed on the upper part of the conical block (7). The guide plates (8) are distributed sequentially on both sides of the airflow hole (6).

4. The gas-solid separator of a three-stage separator according to claim 1, characterized in that: The lower end of the connecting rod (13) is fixedly connected to a spiral rod (15), and one end of the spiral rod (15) extends into the inside of the air outlet pipe (16).

5. The gas-solid separator of a three-stage separator according to claim 1, characterized in that: The separator (17) is composed of a straight cylinder and a conical cylinder. An air inlet (18) is integrally formed on one side of the separator (17). The separator (17) is fixedly connected to one end of the airflow hole (6) through the air inlet (18).

6. The gas-solid separator of a three-stage separator according to claim 1, characterized in that: One end of the air outlet pipe (16) passes through the mounting base (10) and the lower end of the air outlet cylinder (11), and the upper end of the air outlet pipe (16) abuts against the lower end of the non-woven fabric filter screen (14).

7. The gas-solid separator of a three-stage separator according to claim 1, characterized in that: The scraper (24) is composed of a straight plate and an inclined plate, both of which are L-shaped structures. One side of the scraper (24) is attached to the inner wall surface of the separation cylinder (17).

8. The gas-solid separator of a three-stage separator according to claim 1, characterized in that: A conical cover (25) is fixedly installed at the upper end of the fixed shaft (21), and a discharge pipe (26) is fixedly connected to the lower end of the dust collection bin (19).

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