Anti-blocking cyclone cylinder for preheater

Abstract

The utility model discloses an anti-blocking cyclone cylinder for a preheater, which relates to the technical field of preheaters and comprises a cyclone cylinder, an air inlet pipe matched with the cyclone cylinder penetrates through the top of the cyclone cylinder, and a discharge pipe is arranged at the bottom end of the cyclone cylinder; an anti-blocking mechanism is arranged in the discharging pipe in a penetrating mode and used for preventing the cyclone from being blocked. And a gas outlet assembly penetrates through the middle of the top end of the cyclone and is used for increasing the gas discharge rate. The cyclone barrel, the air inlet pipe, the discharging pipe, the anti-blocking mechanism and the air outlet assembly are arranged in a matched mode, so that effective anti-blocking measures can be achieved, the situation that shutdown cleaning is needed due to blockage of the cyclone barrel is greatly reduced, continuity and stability of a production line are guaranteed, meanwhile, direct physical impact can be avoided, and the production efficiency is improved. The equipment abrasion and damage risks caused by repeated striking are reduced, the service life of the equipment is prolonged, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of preheater technology, and more specifically, to an anti-clogging cyclone for a preheater. Background Technology

[0002] In cement processing, the use of preheaters is crucial for fully utilizing the heat inside the kiln, reducing the heat consumption of clinker firing, and minimizing the floor space occupied by the firing equipment. However, after long-term operation, material accumulation and scaling can easily occur in the cone section of the cyclone separator in the preheater, leading to blockage problems. This forces the system to be shut down for cleaning, severely impacting production efficiency. Therefore, it is necessary to design an anti-blockage cyclone separator for preheaters to solve the blockage problem, ensure the continuity and stability of production, avoid losses caused by downtime for maintenance, and guarantee overall economic benefits.

[0003] For example, Chinese patent CN217125741U discloses a cyclone preheater with an anti-clogging structure, including a preheater body, an air outlet, an air inlet pipe, a guide cylinder, a mounting sleeve, a drive motor, a drive bevel gear, a fixing plate, a push rod, and a baffle. The rotating sleeve continuously rotates, pushing the push rods at various positions, repeatedly striking the guide cylinder to prevent blockage. However, in the anti-clogging process of the aforementioned cyclone preheater, the vibration generated by the repeated striking of the guide cylinder by the push rods to clear accumulated material requires precise control of the striking force. Improper striking force not only fails to effectively clear accumulated material but may also damage the equipment. In particular, long-term repeated mechanical impacts accelerate component wear, shorten equipment lifespan, and increase the complexity and cost of equipment maintenance.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes an anti-clogging cyclone for preheaters to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] A preheater anti-clogging cyclone includes a cyclone, an air inlet pipe that cooperates with the cyclone is provided through the top of the cyclone, and a discharge pipe is provided at the bottom of the cyclone; wherein, an anti-clogging mechanism is provided through the interior of the discharge pipe to prevent the cyclone from being blocked; and an air outlet component is provided through the middle of the top of the cyclone to increase the gas discharge rate.

[0008] Furthermore, to remove accumulated material at the discharge pipe, the gear ring meshing with the bevel gear rotates under the action of the motor, driving the rotating rod and rotating block to rotate. The rotation of the rotating rod and rotating block can act more evenly on the accumulated material, effectively dispersing and agitating it, thus more efficiently preventing blockage. At the same time, the combined structure of the rotating rod and rotating block can ensure normal discharge when no blockage occurs. The anti-blockage mechanism includes rotating columns symmetrically arranged inside the discharge pipe, with a cone-shaped part located at the end of the rotating column away from the discharge pipe and on the outside of the discharge pipe. The gears include a bevel gear with a gear ring meshing at its bottom end. A protective shell connected to the unloading pipe is located on the outside of the gear ring. The gear ring and the unloading pipe are connected by a bearing. A motor that mates with the protective shell is located at the end of one set of bevel gears away from the unloading pipe. Several rotating rods that mate with the unloading pipe are located at the other end of the rotating column. Rotating blocks are located inside the rotating rods. The rotating rods are arc-shaped rods that mate with the unloading pipe, and the rotating rods are evenly arranged and circumferentially distributed at the other end of the rotating column. Arc-shaped surfaces are provided at both ends of the rotating blocks, and arc-shaped surfaces are provided on both sides of the rotating blocks.

[0009] Furthermore, to increase the gas discharge rate, the airflow velocity increases and the pressure decreases under the action of the contraction section. According to Bernoulli's principle, the static pressure decreases when the flow velocity increases. Then, the fluid reaches the narrowest part of the throat, where the flow velocity reaches its maximum and the pressure reaches its minimum. After that, the fluid enters the expansion section, where the pipe gradually widens, the flow velocity slows down, and the pressure recovers. This effectively increases the gas discharge rate, making the cyclone more efficient. The gas discharge assembly includes an expansion section, a throat, and a contraction section arranged sequentially from top to bottom at the top of the cyclone. The connection between the expansion section and the contraction section forms the throat. The expansion section is a conical structure with a gradually increasing diameter along the direction away from the discharge pipe. The contraction section is a conical structure with a gradually increasing diameter along the direction closer to the discharge pipe. The connection between the throat and the expansion section, and the connection between the throat and the contraction section, are both smooth arc-shaped transition structures.

[0010] The beneficial effects of this utility model are as follows:

[0011] 1. This utility model, through the coordinated design of a cyclone separator, an air inlet pipe, a discharge pipe, an anti-blocking mechanism, and an air outlet assembly, not only achieves effective anti-blocking measures, greatly reducing the need for machine shutdown for cleaning due to cyclone blockage, thus ensuring the continuity and stability of the production line, but also avoids direct physical impact, reducing the risk of equipment wear and damage caused by repeated impacts, extending the service life of the equipment, and reducing maintenance costs.

[0012] 2. Through the anti-blocking mechanism, the gear ring meshing with the bevel gear can rotate under the action of the motor, which in turn drives the rotating rod and rotating block to rotate. The rotation of the rotating rod and rotating block can act more evenly on the accumulated material, effectively disperse and agitate the material, thereby more efficiently preventing the occurrence of blockage. At the same time, through the combined structure of the rotating rod and rotating block, the normal discharge of material can be guaranteed when there is no blockage.

[0013] 3. Through the air outlet component, the airflow velocity increases and the pressure decreases under the action of the contraction section. According to Bernoulli's principle, the static pressure decreases when the flow velocity increases. Then, the fluid reaches the narrowest part of the throat, where the flow velocity reaches its maximum and the pressure reaches its minimum. After that, the fluid enters the expansion section, where the pipe gradually widens, the flow velocity slows down, and the pressure recovers. This effectively increases the gas discharge rate, making the cyclone more efficient. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of an anti-clogging cyclone for a preheater according to an embodiment of the present utility model;

[0016] Figure 2 This is one of the cross-sectional views of an anti-clogging cyclone for a preheater according to an embodiment of the present utility model;

[0017] Figure 3 This is a second cross-sectional view of an anti-clogging cyclone for a preheater according to an embodiment of the present utility model;

[0018] Figure 4 This is one of the partial structural schematic diagrams of the anti-blocking mechanism in an anti-blocking cyclone for a preheater according to an embodiment of the present utility model;

[0019] Figure 5 This is a second partial structural schematic diagram of the anti-blocking mechanism in an anti-blocking cyclone for a preheater according to an embodiment of the present utility model.

[0020] In the picture:

[0021] 1. Cyclone; 2. Inlet pipe; 3. Discharge pipe; 4. Anti-clogging mechanism; 401. Rotating column; 402. Bevel gear; 403. Gear ring; 404. Protective shell; 405. Bearing 1; 406. Motor; 407. Rotating rod; 408. Rotating block; 4081. Arc surface 1; 4082. Arc surface 2; 409. Bearing 2; 410. Sensor; 5. Exhaust assembly; 501. Throat; 502. Expansion section; 503. Contraction section. Detailed Implementation

[0022] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0023] According to an embodiment of the present invention, an anti-clogging cyclone for a preheater is provided.

[0024] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figures 1-5 As shown, the preheater anti-clogging cyclone according to an embodiment of the present invention includes a cyclone 1, an air inlet pipe 2 that cooperates with the cyclone 1 is provided through the top of the cyclone 1, and a discharge pipe 3 is provided at the bottom of the cyclone 1; wherein, an anti-clogging mechanism 4 is provided through the inside of the discharge pipe 3 to prevent the cyclone 1 from being blocked; and an air outlet assembly 5 is provided through the middle of the top of the cyclone 1 to increase the gas discharge rate.

[0025] By utilizing the above-mentioned technical solution of this utility model, the utility model, through the coordinated arrangement of the cyclone 1, air inlet pipe 2, unloading pipe 3, anti-blocking mechanism 4 and air outlet component 5, can not only achieve effective anti-blocking measures and greatly reduce the need for machine shutdown for cleaning due to cyclone blockage, thus ensuring the continuity and stability of the production line, but also avoid direct physical impact, reduce the risk of equipment wear and damage caused by repeated impacts, extend the service life of the equipment, and reduce maintenance costs.

[0026] In one embodiment, the anti-blocking mechanism 4 includes a rotating column 401 symmetrically arranged inside the unloading pipe 3. A bevel gear 402 is provided at the end of the rotating column 401 away from the unloading pipe 3 and located outside the unloading pipe 3. A gear ring 403 meshes with the bottom of the bevel gear 402. A protective shell 404 connected to the unloading pipe 3 is provided outside the gear ring 403. The gear ring 403 and the unloading pipe 3 are connected by a bearing 405. A motor 406 cooperating with the protective shell 404 is provided at the end of one set of bevel gears 402 away from the unloading pipe 3. Several rotating rods 407 cooperating with the unloading pipe 3 are provided at the other end of the rotating column 401. Rotating blocks 408 are provided inside the rotating rods 407. The moving rod 407 is an arc-shaped rod that cooperates with the unloading pipe 3, and several rotating rods 407 are evenly arranged and distributed in a circular pattern at the other end of the rotating column 401; the two ends of the rotating block 408 are provided with arc-shaped surfaces 4081, and the two sides of the rotating block 408 are provided with arc-shaped surfaces 4082; under the rotation of the motor 406, the gear ring 403 that meshes with the bevel gear 402 rotates, driving the rotating rods 407 and the rotating block 408 to rotate. The rotation of the rotating rods 407 and the rotating block 408 can act more evenly on the accumulated material, effectively disperse and agitate the material, thereby more efficiently preventing the occurrence of blockage. At the same time, through the combined structure of the rotating rods 407 and the rotating block 408, the normal discharge of material can be ensured when there is no blockage.

[0027] In addition, it should be noted that the aforementioned rotating column 401 and the unloading pipe 3 are connected by bearing 409.

[0028] In addition, it should be noted that a sensor 410 is installed at the bottom of the discharge pipe 3. The sensor 410 is an infrared sensor. When the discharge pipe 3 is not blocked, the sensor 410 will always detect the obstruction caused by the falling material. When the sensor 410 cannot detect the obstruction caused by the falling material, it indicates that the top of the discharge pipe 3 is blocked. The sensor 410 is existing technology and will not be elaborated on here.

[0029] The working principle of the anti-blocking mechanism 4: By starting the motor 406, a set of bevel gears 402 connected to the motor 406 are driven to rotate, which causes the gear ring 403 meshing with the bevel gears 402 to rotate. The rotation of the gear ring 403 drives another set of bevel gears 402 to rotate, which causes the rotating column 401 connected to the bevel gears 402 to rotate, which drives the rotating rod 407 and the rotating block 408 to rotate, thereby turning the material and preventing the cyclone 1 from being blocked.

[0030] In one embodiment, the exhaust assembly 5 includes, from top to bottom, an expansion section 502, a throat 501, and a contraction section 503 arranged sequentially at the top of the cyclone 1. The throat 501 is formed at the junction of the expansion section 502 and the contraction section 503. The expansion section 502 is a conical structure with a gradually increasing diameter along the direction away from the discharge pipe 3. The contraction section 503 is a conical structure with a gradually increasing diameter along the direction closer to the discharge pipe 3. The junctions between the throat 501 and the expansion section 502, and between the throat 501 and the contraction section 503, are smooth arc transition structures. Under the action of the contraction section 503, the airflow velocity increases while the pressure decreases. According to Bernoulli's principle, the static pressure decreases when the flow velocity increases. Then, the fluid reaches the narrowest part of the throat 501, where the flow velocity reaches its maximum and the pressure reaches its minimum. Afterward, the fluid enters the expansion section 502, where the pipe gradually widens, the flow velocity slows down, and the pressure recovers. This effectively increases the gas discharge rate, making the cyclone more efficient.

[0031] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0032] In practical applications, raw materials and hot exhaust gas first enter the cyclone separator 1 through the inlet pipe 2. The hot exhaust gas usually comes from the kiln tail or cooler and contains a large amount of heat. These hot air streams rotate at high speed inside the cyclone separator, generating a strong centrifugal force. Due to the centrifugal force, heavier particles are thrown against the cylinder wall and move downwards along the cylinder wall. During this process, the material is preheated, and most of the particles settle to the bottom of the cyclone separator and are discharged through the discharge pipe 3. When the sensor 410 fails to detect the obstruction caused by the falling material, the top of the discharge pipe 3... The blockage is caused by the rotation of the motor 406, which causes the gear ring 403 meshing with the bevel gear 402 to rotate, driving the rotating rod 407 and the rotating block 408 to rotate. The rotation of the rotating rod 407 and the rotating block 408 can act more evenly on the accumulated material, effectively dispersing and agitating the material, thereby more efficiently preventing the blockage (the working principle of the anti-blockage mechanism 4 is as described above). At the same time, the relatively clean exhaust gas after the initial separation is discharged into the air inlet pipe 2 of the next stage cyclone 1 through the air outlet component 5 at the top for secondary preheating and separation.

[0033] In summary, by utilizing the above-mentioned technical solution of this utility model, through the coordinated arrangement of the cyclone 1, air inlet pipe 2, unloading pipe 3, anti-blocking mechanism 4, and air outlet assembly 5, effective anti-blocking measures can be achieved, greatly reducing the need for machine shutdown for cleaning due to cyclone blockage, ensuring the continuity and stability of the production line. Simultaneously, direct physical impact can be avoided, reducing the risk of equipment wear and damage caused by repeated impacts, extending equipment lifespan, and lowering maintenance costs. Through the anti-blocking mechanism 4, under the rotation of the motor 406, the gear ring 403 meshing with the bevel gear 402 rotates, driving the rotating rod 407 and rotating block 408 to rotate. The rotation of the rotating block 408 can act more evenly on the accumulated material, effectively dispersing and agitating it, thus preventing blockages more efficiently. Simultaneously, the combined structure of the rotating rod 407 and the rotating block 408 ensures normal discharge even when no blockage occurs. Through the air outlet assembly 5, under the action of the contraction section 503, the airflow velocity increases while the pressure decreases. According to Bernoulli's principle, increased velocity leads to decreased static pressure. The fluid then reaches its maximum velocity and minimum pressure at the narrowest part of the throat 501. Afterward, the fluid enters the expansion section 502, where the pipe gradually widens, the velocity decreases, and the pressure recovers, effectively increasing the gas discharge rate and making the cyclone separator more efficient.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A preheater anti-clogging cyclone separator, comprising a cyclone separator (1), characterized in that, The top of the cyclone (1) is provided with an air inlet pipe (2) that cooperates with the cyclone (1), and the bottom of the cyclone (1) is provided with a discharge pipe (3). The unloading pipe (3) is internally equipped with an anti-blocking mechanism (4) to prevent the cyclone (1) from being blocked. An exhaust assembly (5) is provided through the top center of the cyclone (1) to increase the gas discharge rate.

2. The anti-clogging cyclone separator for a preheater according to claim 1, characterized in that, The anti-blocking mechanism (4) includes a rotating column (401) symmetrically arranged inside the unloading pipe (3). A bevel gear (402) is provided at one end of the rotating column (401) away from the unloading pipe (3) and located on the outside of the unloading pipe (3). A gear ring (403) is provided at the bottom end of the bevel gear (402) and meshes with it. A protective shell (404) connected to the unloading pipe (3) is provided on the outside of the gear ring (403). The gear ring (403) and the unloading pipe (3) are connected by a bearing (405). A motor (406) that cooperates with the protective shell (404) is provided at one end of the bevel gear (402) away from the unloading pipe (3). The other end of the rotating column (401) is provided with a plurality of rotating rods (407) that cooperate with the unloading pipe (3), and a rotating block (408) is provided inside the plurality of rotating rods (407).

3. The anti-clogging cyclone separator for a preheater according to claim 1, characterized in that, The air outlet assembly (5) includes an expansion section (502), a throat (501) and a contraction section (503) arranged sequentially from top to bottom on the top of the cyclone (1). The throat (501) is formed by the contraction at the connection between the expansion section (502) and the contraction section (503).

4. The anti-clogging cyclone separator for a preheater according to claim 2, characterized in that, The rotating rod (407) is an arc-shaped rod that cooperates with the unloading pipe (3), and several of the rotating rods (407) are evenly arranged and distributed in a circle at the other end of the rotating column (401).

5. The anti-clogging cyclone separator for a preheater according to claim 2, characterized in that, The rotating block (408) has an arc-shaped surface (4081) at both ends and an arc-shaped surface (4082) on both sides.

6. The anti-clogging cyclone separator for a preheater according to claim 3, characterized in that, The expansion section (502) is a tapered structure whose diameter gradually increases in the direction away from the unloading pipe (3).

7. The anti-clogging cyclone separator for a preheater according to claim 3, characterized in that, The contraction section (503) is a tapered structure whose diameter gradually increases along the direction close to the unloading pipe (3).

8. The anti-clogging cyclone separator for a preheater according to claim 3, characterized in that, The connection between the throat (501) and the expansion section (502) and the connection between the throat (501) and the contraction section (503) are both smooth arc transition structures.

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