Waste heat recovery device for aluminum hydroxide production

Abstract

The utility model discloses a waste heat recovery device for aluminum hydroxide production, relates to the technical field of aluminum hydroxide production equipment, and aims to solve the problems that a pipeline is blocked and eroded and the service life of the pipeline is influenced if a part of dust and smoke are contained in gas in a heat recovery process and cannot be effectively treated. A second pipeline and a third pipeline are arranged at the two ends of the heat recoverer respectively, and the second pipeline is connected with the first pipeline through a connector. Dust and the like attached to the filter screen are cleaned through the cleaning mechanism and the collecting mechanism arranged in the connector, the situation that the dust and the like penetrate through the filter screen and cause pipeline blockage, and consequently normal use of equipment is affected is avoided, the dust cleaned away from the filter screen is collected through the collecting mechanism, the situation that the dust falls into the pipeline and causes secondary damage is avoided, and the service life of the equipment is prolonged. And meanwhile, the heat recovery efficiency is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of aluminum hydroxide production equipment, and in particular to a waste heat recovery device for aluminum hydroxide production. Background Technology

[0002] The production of aluminum hydroxide generates a large amount of heat. To reduce resource waste, most manufacturers currently use waste heat recovery devices to recover and reuse the heat. However, during the heat recovery process, the gas contains some dust and smoke. If these are not effectively treated, they will clog and corrode the pipelines, affecting their service life.

[0003] Therefore, this application provides a waste heat recovery device for aluminum hydroxide production to meet the demand. Utility Model Content

[0004] The purpose of this application is to provide a waste heat recovery device for aluminum hydroxide production, which aims to solve the problem that during the heat recovery process, the gas contains some dust and smoke, which, if not effectively treated, will clog and corrode the pipeline, affecting the service life of the pipeline.

[0005] To achieve the above objectives, this application provides the following technical solution: a waste heat recovery device for aluminum hydroxide production, including a dryer and a heat recovery unit. The dryer and the heat recovery unit are connected by a pipe. The top surface of the heat recovery unit is provided with a pipe 1, and the two ends of the heat recovery unit are respectively provided with a pipe 2 and a pipe 3. The pipe 2 is connected to the pipe 1 through a connector.

[0006] The bottom surface of the connector is provided with a placement groove, and a frame is slidably connected in the placement groove. A filter screen is provided on the frame, and a first through hole and a second through hole are provided at the front and back of the placement groove, respectively. A cleaning mechanism is provided on the inner wall of the first through hole, and the cleaning mechanism is slidably connected to the filter screen. A dust collection mechanism is provided at the bottom of the frame. A limiting mechanism is provided on the top surface of the frame, and the limiting mechanism is slidably connected to the frame.

[0007] Preferably, the cleaning mechanism includes a ring gear and an inner beam, a brush, a connecting gear, and a drive gear. A receiving groove is provided on the inner wall of the second perforation. The ring gear is rotatably connected in the receiving groove. An inner beam is provided on the inner wall of the ring gear. A brush is provided in the middle of the inner beam. The brush is slidably connected to the filter screen. A connecting hole communicating with the top is provided on the inner wall of the receiving groove. A connecting gear is rotatably connected in the connecting hole. The connecting gear and the ring gear mesh with each other. A motor is provided on the top surface of the connector. A drive gear that meshes with the connecting gear is provided on the drive shaft of the motor.

[0008] Preferably, the outer wall of the connector is provided with multiple sets of positioning holes, the positioning holes are connected to the receiving groove, a positioning pin is threaded in the positioning hole, and an annular groove is provided on the end face of the ring gear, the annular groove is corresponding to the positioning hole, and the inner end of the positioning pin is slidably connected in the annular groove.

[0009] Preferably, the limiting mechanism includes limiting pins, a frame, and limiting gears. Two sets of Z-shaped limiting pins are slidably connected to the top surface of the connector, and the limiting pins are track-limited by a U-shaped limiting frame. The opposing surfaces of the two sets of limiting pins are provided with teeth. A U-shaped frame is provided in the middle of the top surface of the connector. A motor is provided on the top surface of the frame, and a limiting gear is provided on the bottom surface of the frame. The limiting gear is driven by the motor, and the limiting gear meshes with the teeth. A U-shaped top is provided on the top surface of the frame. The U-shaped groove on the top is adapted to the end of the limiting pin, and a through hole adapted to the top is provided on the connector.

[0010] Preferably, the collecting mechanism includes a receiving hopper, a slot that is interconnected on both sides at the bottom of the frame, and a groove on the top surface of the frame. The groove is connected to the slot through a guide hole, and the receiving hopper is slidably connected in the slot.

[0011] In summary, the technical effects and advantages of this utility model are as follows:

[0012] This invention utilizes a cleaning and collection mechanism within the connector to clean dust and other debris adhering to the filter screen, preventing dust from penetrating the filter and causing blockages in the pipes, thus affecting the normal operation of the equipment. Furthermore, the collection mechanism collects the dust removed from the filter screen, preventing dust from falling into the pipes and causing secondary damage, while also ensuring the efficiency of heat recovery. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application 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 only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the connector structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the exploded structure of the connector of this utility model;

[0017] Figure 4 This is a schematic diagram of the cleaning mechanism structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the limiting mechanism structure of this utility model;

[0019] Figure 6 This is a partial cross-sectional view of the connector of this utility model;

[0020] Figure 7 This is a schematic diagram of the frame structure of this utility model;

[0021] Figure 8 This is a schematic diagram of the receiving hopper structure of this utility model.

[0022] In the diagram: 1. Dryer; 2. Pipe 1; 3. Pipe 2; 4. Heat recovery unit; 5. Pipe 3; 6. Connector; 61. Placement slot; 62. Through hole 1; 63. Through hole 2; 64. Receiving slot; 65. Positioning hole; 66. Adapter hole; 67. Through hole 3; 7. Positioning pin; 8. Ring gear; 81. Ring groove; 9. Inner beam; 10. Brush; 11. Adapter gear; 12. Drive gear; 13. Frame; 14. Groove; 15. Filter screen; 16. Top head; 17. Slot; 18. Guide hole; 19. Receiving hopper; 20. Limiting pin; 21. Frame; 22. Limiting gear. 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] Example: Reference Figure 1-8 The waste heat recovery device for aluminum hydroxide production shown includes a dryer 1. The aluminum hydroxide is processed by the dryer 1, and the heat is discharged through the pipe 2 at the top of the dryer 1. After passing through the connector 6 and the pipe 3, it is transferred to the heat recovery unit 4 to realize heat recovery and reuse. The remaining waste gas is discharged through the pipe 5.

[0025] A filter screen 15 is provided inside the connector 6. The filter screen 15 is used to intercept dust and other particles in the gas to prevent them from adhering to the inner wall of the pipe. In order to prevent excessive dust on the filter screen 15 and cause it to become clogged, a cleaning mechanism for cleaning the filter screen 15 is provided on the connector 6. In order to prevent the dust that has been cleaned off the filter screen 15 from re-adhering, a collection mechanism is provided on the connector 6 to collect the dust and other particles. A limiting mechanism for limiting the internal filter screen 15 is provided at the top of the connector 6.

[0026] The bottom surface of the connector 6 is provided with a placement groove 61, in which a frame 13 is inserted and a filter screen 15 is provided on the frame 13. A top head 16 is provided on the top surface of the frame 13. The top head 16 passes through the through hole 67 on the top of the connector 6. Then the top head 16 cooperates with the limiting mechanism on the top of the connector 6 to limit the frame 13.

[0027] The inner wall of the placement groove 61 is provided with a first perforation 62 and a second perforation 63 respectively. A second pipe 3 is provided in the first perforation 62 and a first pipe 2 is provided in the first perforation 62. A receiving groove 64 is provided on the inner wall of the second perforation 63. A connecting hole 66 connecting to the outside is provided on the inner wall of the receiving groove 64. The cleaning mechanism is located in the receiving groove 64 and is slidably connected to the filter screen 15.

[0028] A collection mechanism is provided at the bottom of frame 13 to collect the fallen dust.

[0029] Cleaning mechanism: The ring gear 8 is rotatably connected within the receiving groove 64, and a transition gear 11 is rotatably connected within the transition hole 66. The transition gear 11 meshes with the ring gear 8. To reduce the friction of the ring gear 8 within the receiving groove 64, six sets of positioning holes 65 communicating with the receiving groove 64 are provided on the outer wall of the connector 6, and positioning pins 7 are threaded into the positioning holes 65. An annular groove 81 is provided on the end face of the ring gear 8, and the annular groove 81 is slidably connected to the inner end of the positioning pin 7, reducing the friction of the ring gear 8 within the receiving groove. The friction within 64, and in order to drive the adapter gear 11 to rotate, a motor is provided on the top surface of the connector 6, and a drive gear 12 is provided on the drive shaft of the motor. The drive gear 12 drives the ring gear 8 to rotate through the adapter gear 11. Therefore, the ring gear 8 is driven to rotate through the above structure. An inner beam 9 is provided on the inner wall of the ring gear 8, and a brush 10 is provided on the end face of the inner beam 9. The brush 10 contacts the filter screen 15 to clean it, so that the dust falls into the collection mechanism and avoids falling into the pipe and causing secondary blockage.

[0030] Limiting mechanism: A U-shaped limiting frame is provided on the top of the connector 6. The limiting frame is used to stabilize the movement trajectory of the Z-shaped limiting pins 20. The opposing surfaces of the two sets of limiting pins 20 are provided with teeth. The two sets of teeth are driven by a limiting gear 22. The limiting gear 22 is suspended at the bottom of the frame 21 (the frame 21 is fixed in the middle of the top surface of the connector 6). A motor for driving the limiting gear 22 is provided on the top surface of the frame 21. The Z-shaped limiting pins 20 cooperate with the U-shaped groove on the top head 16 to limit the frame 13.

[0031] Collection mechanism: After the cleaning mechanism cleans the filter screen 15, the dust falls into the receiving hopper 19 through the guide hole 18 at the bottom of the groove 14 for centralized collection. After contacting the limit of the frame 13, the receiving hopper 19 is removed from the slot 17 and the dust in the receiving hopper 19 is processed.

[0032] The groove 14 is designed to prevent the frame 13 from colliding with the brush 10 and causing physical interference when the frame 13 is removed.

[0033] The working principle of this utility model is as follows: When the dryer 1 is working, its heat is transferred to the pipe 2 through the gas. When it passes through the connector 6, the motor of the cleaning mechanism drives the drive gear 12 to rotate. The drive gear 12 drives the adapter gear 11 to rotate in the adapter hole 66, which in turn drives the ring gear 8, which meshes with the adapter gear 11, to rotate in the receiving groove 64. The ring gear 8 cooperates with the positioning pin 7 through the ring groove 81 to reduce the friction of the ring gear 8 in the receiving groove 64. The rotating ring gear 8 drives the brush 10 to clean the filter screen 15 on the frame 13 through the inner beam 9. The dust that is cleaned off falls into the receiving hopper 19 through the guide hole 18 under the action of gravity, thus completing the cleaning of the filter screen 15 and preventing dust from adhering to the pipe 3, heat recovery unit 4, and pipe 5.

[0034] When maintenance is required on components such as filter screen 15, start the motor of the limiting mechanism. The motor of the limiting mechanism drives the limiting gear 22 to rotate, causing the two sets of limiting pins 20 to move towards each other, releasing the limiting on the top head 16. Then, pull the frame 13 down to separate the frame 13 from the placement slot 61. Then, pull the receiving hopper 19 out of the slot 17 and pour out the dust in the receiving hopper 19.

[0035] The electromechanical connections involved in this utility model are common practices used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments; they are common knowledge.

[0036] Components not described in detail in this article are existing technologies.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 waste heat recovery device for aluminum hydroxide production, comprising a dryer (1) and a heat recovery unit (4), wherein the dryer (1) and the heat recovery unit (4) are connected by a pipeline, characterized in that: The top surface of the heat recovery unit (4) is provided with a pipe (2), and the two ends of the heat recovery unit (4) are respectively provided with a pipe (3) and a pipe (5). The pipe (3) is connected to the pipe (2) through a connector (6). The connector (6) has a placement groove (61) on its bottom surface. A frame (13) is slidably connected in the placement groove (61). A filter screen (15) is provided on the frame (13). A first perforation (62) and a second perforation (63) are provided on the front and back of the placement groove (61), respectively. A cleaning mechanism is provided on the inner wall of the first perforation (62). The cleaning mechanism is slidably connected to the filter screen (15). A dust collection mechanism is provided at the bottom of the frame (13). A limiting mechanism is provided on the top surface of the frame (13). The limiting mechanism is slidably connected to the frame (13).

2. The waste heat recovery device for aluminum hydroxide production according to claim 1, characterized in that: The cleaning mechanism includes a ring gear (8) and an inner beam (9), a brush (10), a connecting gear (11), and a drive gear (12). The inner wall of the perforation (63) is provided with a receiving groove (64). The ring gear (8) is rotatably connected in the receiving groove (64). The inner wall of the ring gear (8) is provided with an inner beam (9). The middle part of the inner beam (9) is provided with a brush (10). The brush (10) is slidably connected to the filter screen (15). The inner wall of the receiving groove (64) is provided with a connecting hole (66) that connects to the top. The connecting gear (11) is rotatably connected in the connecting hole (66). The connecting gear (11) meshes with the ring gear (8). A motor is provided on the top surface of the connector (6). The drive shaft of the motor is provided with a drive gear (12) that meshes with the connecting gear (11).

3. The waste heat recovery device for aluminum hydroxide production according to claim 2, characterized in that: The connector (6) has multiple sets of positioning holes (65) on its outer wall. The positioning holes (65) are connected to the receiving groove (64). A positioning pin (7) is threaded into the positioning hole (65). An annular groove (81) is provided on the end face of the ring gear (8). The annular groove (81) is positioned opposite to the positioning hole (65). The inner end of the positioning pin (7) is slidably connected in the annular groove (81).

4. The waste heat recovery device for aluminum hydroxide production according to claim 2, characterized in that: The limiting mechanism includes a limiting pin (20), a frame (21), and a limiting gear (22). Two sets of Z-shaped limiting pins (20) are slidably connected to the top surface of the connector (6), and the limiting pins (20) are track-limited by a U-shaped limiting frame. The opposing surfaces of the two sets of limiting pins (20) are provided with teeth. A U-shaped frame (21) is provided in the middle of the top surface of the connector (6). A motor is provided on the top surface of the frame (21), and a limiting gear (22) is provided on the bottom surface of the frame (21). The limiting gear (22) is driven by the motor, and the limiting gear (22) meshes with the teeth. A U-shaped top head (16) is provided on the top surface of the frame (13). The U-shaped groove on the top head (16) is adapted to the end of the limiting pin (20), and a through hole (67) adapted to the top head (16) is provided on the connector (6).

5. A waste heat recovery device for aluminum hydroxide production according to claim 2, characterized in that: The collecting mechanism includes a receiving hopper (19), a slot (17) with left and right communication is provided at the bottom of the frame (13), and a groove (14) is provided on the top surface of the frame (13). The groove (14) is connected to the slot (17) through a guide hole (18), and the receiving hopper (19) is slidably connected in the slot (17).

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