Stirring and air inlet all-in-one machine for fluidized bed

Abstract

The utility model relates to the technical field of fluidized beds, and discloses a stirring and air inlet all-in-one machine for a fluidized bed, which comprises a flange plate, a flange supporting pipe fixedly mounted at the center of the lower end of the flange plate, a magnetic coupler fixedly mounted at the lower end of the flange supporting pipe, and a gear motor fixedly mounted at the lower end of the magnetic coupler. The output end of the gear motor is connected and assembled with the driving end of the magnetic coupler, a rotating shaft is rotationally installed in the flange supporting pipe through a rotating part, the lower end of the rotating shaft is connected with the working end of the magnetic coupler, the upper end of the rotating shaft penetrates through the flange plate and is fixedly provided with a stirring part, and an air supply assembly is arranged at the top of the flange supporting pipe; an air seal assembly is arranged at the bottom of the flange supporting pipe, and an air guide valve seat communicates with one side of the lower end of the flange plate. According to the utility model, through a stirring, air inlet, discharging and uniform distribution structure which is integrally mounted on the flange plate at the bottom of the bed body, powder inside the bed body can be stirred and discharged more smoothly while air flow is uniformly input, and the structural integration degree is high.

Description

Technical Field

[0001] This utility model relates to the field of fluidized bed technology, specifically to an integrated stirring and air-inlet machine for fluidized beds. Background Technology

[0002] The fluidized beds currently in use mainly consist of a gas distribution plate, bed body, internal components (such as heat exchange tubes and cyclone separators), and feeding, discharging, and stirring devices.

[0003] A gas distribution plate is located at the bottom of the bed, uniformly distributing the incoming airflow and suspending the powder to form a fluidized state similar to a fluid. The bed is the place where the powder reacts with the gas or transfers heat, and is usually a tank. Among the internal components, heat exchange tubes can regulate the bed temperature, and a cyclone separator is used to separate the gas-solid mixture to prevent the powder from being carried out of the bed by the airflow. The feeding device continuously replenishes the powder, the discharging device discharges the reaction products, and the stirring device is used to stir the powder inside. The high-speed airflow suspends the powder, and efficient mixing and reaction are achieved through the fluidized state.

[0004] The feeding, discharging, mixing, and distribution plates are all located at the bottom of the bed. Each part needs to be individually positioned, installed, and sealed, resulting in numerous and scattered components.

[0005] Therefore, in order to solve the above problems, an integrated stirring and air intake machine for fluidized beds is proposed. Utility Model Content

[0006] The purpose of this invention is to provide an integrated stirring and air intake machine for fluidized beds, which integrates functions to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A fluidized bed stirring and air-intake integrated machine includes a flange, a flange support pipe fixedly installed at the center of the lower end of the flange, a magnetic coupler fixedly installed at the lower end of the flange support pipe, a geared motor fixedly installed at the lower end of the magnetic coupler, the output end of the geared motor being connected and assembled with the drive end of the magnetic coupler, a rotating shaft rotatably installed inside the flange support pipe via a rotating component, the lower end of the rotating shaft being connected to the working end of the magnetic coupler, the upper end of the rotating shaft passing through the flange and fixedly installed with a stirring component, an air supply assembly provided at the top of the flange support pipe, and an air seal assembly provided at the bottom of the flange support pipe.

[0009] A gas guide valve seat is connected to one side of the lower end of the flange. A cylinder is installed at the lower end of the gas guide valve seat through a sealing assembly. A first air seal pipe is connected to one side of the gas guide valve seat, and a discharge pipe is connected to the other side of the gas guide valve seat.

[0010] Specifically, the air supply assembly includes an air guide tube, an air supply pipe, and an air guide ring. An annular groove is provided on the circumferential side of the flange support tube, and the air guide ring is fitted into the annular groove. An air supply pipe is connected to one side of the air guide ring. An air guide tube is fixedly installed on the top of the circumferential side of the rotating shaft. A through hole connecting the annular groove is provided at the upper end of the flange support tube.

[0011] Furthermore, the bottom of the circumferential side of the air guide duct is provided with a flared air guide surface, and the top of the flange is provided with a flared air guide groove, forming an air guide diffusion channel between the flared air guide surface and the flared air guide groove.

[0012] Specifically, the sealing assembly includes a sealing rod, a metal bellows, and a support cylinder. The lower end of the air guide valve seat is fixedly assembled with the cylinder through the support cylinder. The push rod of the cylinder extends into the support cylinder and is fixedly installed with the sealing rod. A stop ring is fixedly installed on the bottom of the circumferential side of the sealing rod. The sealing rod is fitted with a metal bellows, and both ends of the metal bellows are fixedly assembled with the stop ring and the air guide valve seat, respectively.

[0013] Furthermore, a sealing gasket is embedded at the upper end of the metal bellows.

[0014] Specifically, the gas seal assembly includes an air inlet channel and a second gas seal pipe. The bottom of the flange support pipe has an air inlet channel, and the side wall of the flange support pipe is fixedly installed with a second gas seal pipe that communicates with the air inlet channel. The end of the air inlet channel away from the second gas seal pipe is connected to the interior of the magnetic coupler.

[0015] Specifically, a first cooling cylinder is fixedly installed on the bottom of the circumferential side of the flange support pipe, and a second cooling cylinder is fixedly installed on the bottom of the circumferential side of the air guide valve seat.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] The integrated structure of stirring, air intake, material discharge, and uniform distribution via the flange at the bottom of the bed allows for uniform airflow while stirring the powder inside the bed. It also facilitates smoother material discharge. The overall structure is highly integrated and easy to assemble. All moving parts are sealed to ensure an isolated environment inside the bed and prevent leakage. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic front view of the structure of this utility model;

[0020] Figure 3 This is a schematic cross-sectional view of the structure of this utility model;

[0021] Figure 4This is a partial sectional view of the structure of the air supply component of this utility model;

[0022] Figure 5 This is a partial sectional view of the structure of the sealing component of this utility model;

[0023] Figure 6 This is a partial sectional view of the structure of the air seal assembly of this utility model.

[0024] In the diagram: 1 Gear motor, 2 Magnetic coupler, 3 Air seal assembly, 31 Air inlet channel, 32 Second air seal pipe, 4 Flange support pipe, 5 First cooling cylinder, 6 Air supply assembly, 61 Air guide duct, 62 Air supply pipe, 63 Through hole, 64 Air guide ring, 65 Annular groove, 7 Flange, 8 Agitator, 9 Rotary shaft, 10 Air guide valve seat, 11 Second cooling cylinder, 12 Sealing assembly, 121 Sealing rod, 122 Metal bellows, 123 Abutment ring, 124 Support cylinder, 125 Sealing gasket, 13 Cylinder, 14 First air seal pipe, 15 Discharge pipe. Detailed Implementation

[0025] 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.

[0026] Contents of the example:

[0027] Please see Figure 1 , Figure 2 , Figure 3 A bed-type agitator and air intake unit is provided, including a flange 7. A flange support pipe 4 is fixedly installed at the center of the lower end of the flange 7 by welding. The flange 7 can be installed at the bottom of the bed by bolts, which also facilitates subsequent disassembly and maintenance. The flange 7 and the flange support pipe 4 serve as the mounting base for other components.

[0028] A magnetic coupler 2 is fixedly installed at the lower end of the flange support pipe 4. A geared motor 1 is fixedly installed at the lower end of the magnetic coupler 2. The output end of the geared motor 1 is connected and assembled with the drive end of the magnetic coupler 2. A rotating shaft 9 is rotatably installed inside the flange support pipe 4 through a rotating component. The lower end of the rotating shaft 9 is connected to the working end of the magnetic coupler 2. The upper end of the rotating shaft 9 passes through the flange 7 and is fixedly installed with a stirring component 8.

[0029] A stepped hole is provided at the inner bottom of the flange support pipe 4. The rotating part installed in the stepped hole can ensure the stability of the self-rotation of the rotating shaft 9. The rotating part is a conventional structure with structures such as bearings, top rings, rotary seals, and snap rings. There are two rotary seals and bearings distributed up and down. The bearings are positioned by the top ring, and finally limited by the snap ring at the bottom, so that while the rotating shaft 9 can rotate smoothly, the gap between the flange support pipe 4 and the rotating shaft 9 can also be sealed.

[0030] The magnetic coupling 2 is preferably a permanent magnet coupling, which is a conventional component with structures such as a housing, a driving rotor (embedded with permanent magnets), and a driven rotor (made of copper or aluminum conductor materials). It transmits torque in a non-contact manner by magnetic force, has the functions of vibration isolation and overload protection, and the sealing form is static sealing, which can achieve zero leakage and will not cause problems such as the decline of sealing performance due to the wear of the sealing surface.

[0031] The stirring member 8 is in the shape of a Chinese character "ri", which is more likely to trigger the turbulent state and improve the stirring efficiency, so that there will be no dead zone after the powder is fluidized and the fluidization is more uniform.

[0032] The reduction motor 1 is a conventional component with structures such as a frequency conversion motor and a reduction gearbox. As a power source, the reduction motor 1 drives the stirring member 8 to rotate through the magnetic coupling 2 and then through the rotating shaft 9 to stir the powder inside the bed body.

[0033] A air supply component 6 is provided at the top of the flange support pipe 4 for uniformly sending air into the bed body; a gas seal component 3 is provided at the bottom of the flange support pipe 4 for sealing the connection between the magnetic coupling 2 and the flange support pipe 4.

[0034] On one side of the lower end of the flange 7, a gas guide valve seat 10 is connected and installed. The lower end of the gas guide valve seat 10 is installed with a cylinder 13 through a sealing component 12. On one side of the gas guide valve seat 10, a first gas seal pipe 14 is connected and installed, and on the other side of the gas guide valve seat 10, a discharge pipe 15 is connected and installed.

[0035] The cylinder 13 can realize the on-off of the gas guide valve seat 10 and the discharge pipe 15 through the sealing component 12. When the gas guide valve seat 10 and the discharge pipe 15 are cut off, the inert gas introduced into the first gas seal pipe 14 is used to increase the gas pressure here and is greater than the gas pressure inside the bed body to achieve the seal at the gas valve seat 10; when the gas guide valve seat 10 and the discharge pipe 15 are connected for discharging materials, the first gas seal pipe 14 can input inert gas at the same time to assist the discharge of the powder and prevent the powder from bridging.

[0036] Please refer to Figure 4 , the structure of the air supply component 6:

[0037] The air supply assembly 6 includes an air guide tube 61, an air supply pipe 62, and an air guide ring 64. An annular groove 65 is provided on the circumferential side of the flange support pipe 4, and the air guide ring 64 is fitted on the annular groove 65. The air supply pipe 62 is connected to one side of the air guide ring 64. The air guide tube 61 is fixedly installed on the top of the circumferential side of the rotating shaft 9. The air guide tube 61 can rotate with the rotating shaft 9. The upper end of the flange support pipe 4 is provided with a through hole 63 that connects to the annular groove 65. There are 8 to 12 through holes 63 distributed in a circle.

[0038] High-pressure gas enters the annular groove 65 inside the air guide ring 64 through the air supply pipe 62, and then is discharged upward through multiple through holes 63, and enters the bed body along the circumferential side surface of the air guide tube 61.

[0039] The bottom of the circumferential side of the air guide duct 61 is provided with a flared air guide surface (small at the bottom and large at the top), and the top of the flange 7 is provided with a flared air guide groove (large at the top and small at the bottom). An air guide diffusion channel is formed between the flared air guide surface and the flared air guide groove. The air guide diffusion channel is used to guide the airflow discharged from the through hole 63 to form a uniformly distributed and diffused airflow state. In conjunction with the rotating agitator 8, it is conducive to the formation of a fluidized state.

[0040] Please see Figure 5 The structure of sealing assembly 12:

[0041] The sealing assembly 12 includes a sealing rod 121, a metal bellows 122, and a support cylinder 124. The lower end of the air valve seat 10 is fixedly assembled with the cylinder 13 via the support cylinder 124. The push rod of the cylinder 13 extends into the support cylinder 124 and is fixedly installed with the sealing rod 121. A retaining ring 123 is fixedly installed on the bottom of the circumferential side of the sealing rod 121. The metal bellows 122 is sleeved on the sealing rod 121. Both ends of the metal bellows 122 are fixedly assembled with the retaining ring 123 and the air valve seat 10, respectively. The retaining ring 123 is used to support the bottom of the metal bellows 122.

[0042] After the cylinder 13 pushes and pulls the sealing rod 121, it can realize the on-off control of the air guide valve seat 10 and the discharge pipe 15. During the process, the metal bellows 122 always seals the gap between the sealing rod 121 and the air guide valve seat 10, thereby ensuring the sealing of the bed body. This is also a static seal, which can achieve zero leakage and will not cause the sealing performance to decline due to the wear of the sealing surface.

[0043] The metal corrugated pipe 122 is a metal pipe with a regular wavy shape. It has a corrugated pipe body and connecting ends at both ends, and the flexible connection is achieved by the elastic deformation of the corrugated pipe body.

[0044] A sealing gasket 125 is embedded at the upper end of the metal bellows 122. After the sealing gasket 125 is installed, it can improve the sealing between the upper end of the metal bellows 122 and the air valve seat 10. Then, the two ends of the metal bellows 122 are fixedly assembled with the abutment ring 123 and the air valve seat 10 respectively by welding to ensure the sealing and isolation effect.

[0045] Please see Figure 6 The structure of the air seal assembly 3:

[0046] The gas seal assembly 3 includes an air inlet channel 31 and a second gas seal pipe 32. The bottom of the flange support pipe 4 is provided with an air inlet channel 31. The side wall of the flange support pipe 4 is fixedly installed with a second gas seal pipe 32 that communicates with the air inlet channel 31. The end of the air inlet channel 31 away from the second gas seal pipe 32 is connected to the interior of the magnetic coupler 2.

[0047] The second gas seal pipe 32 is used to introduce inert gas into the space between the magnetic coupler 2 and the flange support pipe 4 through the air inlet channel 31, so that the gas pressure here is greater than the internal pressure of the bed, thereby ensuring the sealing of the rotating parts.

[0048] A first cooling cylinder 5 is fixedly installed on the bottom of the circumferential side of the flange support pipe 4, and a second cooling cylinder 11 is fixedly installed on the bottom of the circumferential side of the air guide valve seat 10. Both the first cooling cylinder 5 and the second cooling cylinder 11 are provided with water inlet and water outlet. When in use, the low temperature water passing through the first cooling cylinder 5 and the second cooling cylinder 11 will cool down the rotating sealing ring in the rotating part and the sealing gasket 125 in the sealing assembly 12, so as to avoid the high temperature affecting the elastic sealing performance of the rotating sealing ring and the sealing gasket 125.

[0049] The working principle of this embodiment:

[0050] During installation, flange 7 is fixed to the bottom of the bed with bolts;

[0051] The air supply duct 62 is connected to an external air source device (mainly composed of a gas generator, a gas compressor, and a gas storage tank) through an air passage to provide stable nitrogen, acetylene, and silane for use in the bed.

[0052] The second gas seal pipe 32 and the first gas seal pipe 14 are also connected to the same external gas source equipment to provide stable nitrogen for sealing or auxiliary discharge.

[0053] The geared motor 1, cylinder 13 and other electrical components are electrically connected to the control cabinet of the external fluidized bed for unified control and cooperation.

[0054] In use, the flange support pipe 4 serves as a support structure, and the built-in rotating shaft 9 is driven by the magnetic coupler 2 and the geared motor 1 to achieve non-contact torque transmission. The top of the rotating shaft 9 is equipped with a Z-shaped stirring component 8, which efficiently triggers turbulence and eliminates fluidization dead zone.

[0055] High-pressure gas enters the bed through the air supply pipe 62, annular groove 65 and through hole 63 in the air supply assembly 6, and forms a uniform airflow with the air guide diffusion channel. It works in conjunction with the rotating agitator 8 to optimize the fluidization effect.

[0056] The cylinder 13 controls the opening and closing of the air guide valve seat 10 and the discharge pipe 15 through the sealing assembly 12. When cutting off, the inert gas introduced through the first air seal pipe 14 pressurizes and seals the material. When discharging, the inert gas introduced assists in the discharge of the powder.

[0057] In addition, the gas sealing assembly 3 inputs inert gas to the magnetic coupler 2 through the second gas sealing pipe 32 to maintain the internal pressure higher than the bed body and enhance the sealing performance; the first cooling cylinder 5 and the second cooling cylinder 11 cool the rotating sealing ring and sealing gasket 125 through low temperature water circulation, extend the service life of the sealing components, and ensure the long-term stable operation of the equipment.

[0058] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0059] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fluidized bed stirring and air-inlet integrated machine, including a flange (7), characterized in that: A flange support pipe (4) is fixedly installed at the center of the lower end of the flange (7). A magnetic coupler (2) is fixedly installed at the lower end of the flange support pipe (4). A geared motor (1) is fixedly installed at the lower end of the magnetic coupler (2). The output end of the geared motor (1) is connected to the drive end of the magnetic coupler (2). A rotating shaft (9) is rotatably installed inside the flange support pipe (4) through a rotating component. The lower end of the rotating shaft (9) is connected to the working end of the magnetic coupler (2). The upper end of the rotating shaft (9) passes through the flange (7) and is fixedly installed with a stirring component (8). An air supply component (6) is provided at the top of the flange support pipe (4). An air seal component (3) is provided at the bottom of the flange support pipe (4). A gas valve seat (10) is connected to one side of the lower end of the flange (7). A cylinder (13) is installed at the lower end of the gas valve seat (10) through a sealing assembly (12). A first air seal pipe (14) is connected to one side of the gas valve seat (10), and a discharge pipe (15) is connected to the other side of the gas valve seat (10).

2. The fluidized bed with integrated agitation air-inlet machine according to claim 1, characterized in that: The air supply assembly (6) includes an air guide tube (61), an air supply pipe (62), and an air guide ring (64). The flange support pipe (4) has an annular groove (65) on its circumferential side. The annular groove (65) is fitted with the air guide ring (64). The air supply pipe (62) is connected to one side of the air guide ring (64). The air guide tube (61) is fixedly installed on the top of the circumferential side of the rotating shaft (9). The upper end of the flange support pipe (4) has a through hole (63) that connects to the annular groove (65).

3. The fluidized bed with integrated agitation air-inlet machine according to claim 2, characterized in that: The bottom of the circumferential side of the air guide tube (61) is provided with an flared air guide surface, and the top of the flange (7) is provided with a flared air guide groove. An air guide diffusion channel is formed between the flared air guide surface and the flared air guide groove.

4. The fluidized bed with integrated gas agitation blender of claim 1, wherein: The sealing assembly (12) includes a sealing rod (121), a metal bellows (122), and a support cylinder (124). The lower end of the air valve seat (10) is fixedly assembled with the cylinder (13) through the support cylinder (124). The push rod of the cylinder (13) extends into the support cylinder (124) and is fixedly installed with the sealing rod (121). A stop ring (123) is fixedly installed on the bottom of the circumferential side of the sealing rod (121). The sealing rod (121) is fitted with a metal bellows (122). The two ends of the metal bellows (122) are fixedly assembled with the stop ring (123) and the air valve seat (10) respectively.

5. The integrated stirring and air-intake machine for fluidized beds according to claim 4, characterized in that: A sealing gasket (125) is embedded at the upper end of the metal bellows (122).

6. The fluidized bed with integrated gas agitation blender of claim 1, wherein: The gas seal assembly (3) includes an air inlet channel (31) and a second gas seal pipe (32). The bottom of the flange support pipe (4) is provided with an air inlet channel (31). The side wall of the flange support pipe (4) is fixedly installed with a second gas seal pipe (32) that communicates with the air inlet channel (31). The end of the air inlet channel (31) away from the second gas seal pipe (32) is connected to the interior of the magnetic coupler (2).

7. The integrated gas agitation machine for fluidized bed as claimed in claim 1 wherein: The flange support pipe (4) has a first cooling cylinder (5) fixedly installed on the bottom of its circumferential side, and the air guide valve seat (10) has a second cooling cylinder (11) fixedly installed on the bottom of its circumferential side.

Images