CN215490608U

CN215490608U - Fluidized bed dryer

Info

Publication number: CN215490608U
Application number: CN202121770100.4U
Authority: CN
Inventors: 王学亮
Original assignee: Shanghai Yanan Pharm Co ltd
Current assignee: Shanghai Yanan Pharm Co ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2022-01-11
Anticipated expiration: 2031-07-30

Abstract

The utility model provides a fluidized bed dryer, which comprises a support frame, wherein a drying chamber is arranged on the upper side of the support frame, a bottom chamber is arranged below the drying chamber, a material bearing chamber is arranged between the bottom chamber and the drying chamber, and a lifting device is arranged on the support frame; an air outlet is formed in the side wall of the drying cavity, a dust catching bag is arranged in the drying cavity, and the dust catching bag is positioned on the lower side of the air outlet; an air inlet is formed in the side wall of the bottom cavity, and a heater is arranged at the air inlet; a screen plate for placing materials is arranged in the material bearing cavity. Inside sending the material into the desiccator or seeing off the desiccator inside through bearing material cavity, the gas through the heater heating loops through the otter board and catches the dirt bag in the air intake gets into the desiccator, and the rethread air outlet flows, has realized the drying operation to the material, and catches the dirt bag through flexible electric cylinder drive and be elevating movement shake the dust, helps improving ventilation effect, and helps improving the efficiency of dry material.

Description

Fluidized bed dryer

Technical Field

The utility model relates to the technical field of structural design of dryers, in particular to a fluidized bed dryer.

Background

The fluidization technology originated in 1921, and was first applied to dry industrial mass production, which was a Dorl-Orlevern solid fluidization device established in the United states in 1948, and China did not start to develop the technology until 1958. In the fluidized bed drying process, bulk materials are placed on the pore plate, gas is conveyed from the lower part of the pore plate, so that the material particles are in a suspension state just like liquid boiling, the material particles are fully contacted with the gas, and quick heat transfer and moisture transfer are carried out. The fluidized drying has the advantages of good heat transfer effect, uniform temperature distribution, various operation forms, adjustable material retention time, low investment cost, small maintenance workload and the like, and is widely developed and applied.

The prior Chinese patent with publication number CN210773059U discloses a fluidized bed dryer, which comprises a box body and is characterized in that an inner cavity of the box body is divided into a filter cavity, a fluidization cavity and an air cavity which are communicated from top to bottom through two layers of air distribution plates; the top wall of the filter cavity is provided with an exhaust port, the upper part of the filter cavity is provided with a bag type dust collector, the air outlet end of the bag type dust collector is communicated with the exhaust port, and the lower part of the filter cavity is provided with an active carbon filter layer and a drying agent filter layer from top to bottom; the upper portion lateral wall in fluidization chamber is equipped with the feed inlet, the lower part lateral wall in fluidization chamber is equipped with the discharge gate, the surface of the lateral wall in fluidization chamber is equipped with the heat preservation, leave the heat preservation chamber between heat preservation and the fluidization chamber outer wall, set up heating coil in the heat preservation chamber, heating coil is the heliciform cladding on the box, heating coil connects first heater, first heater sets up in the heat preservation surface.

The inventor believes that the fluidized bed dryer in the prior art has low material drying efficiency, poor ventilation effect and low drying speed, and has a point to be improved.

SUMMERY OF THE UTILITY MODEL

In view of the deficiencies in the prior art, it is an object of the present invention to provide a fluid bed dryer.

The fluidized bed dryer comprises a support frame, wherein a drying chamber is arranged on the upper side of the support frame, a bottom chamber is arranged below the drying chamber, a material bearing chamber is arranged between the bottom chamber and the drying chamber, and a lifting device for lifting the material bearing chamber is arranged on the support frame; an air outlet is formed in the side wall of the drying cavity, a dust collecting bag is arranged in the drying cavity and is positioned on the lower side of the air outlet, and the dust collecting bag is attached to or in clearance fit with the inner wall of the lower side of the drying cavity; an air inlet is formed in the side wall of the bottom cavity, and a heater is arranged at the air inlet; the material supporting cavity is internally provided with a screen plate for placing materials, the mesh size of the screen plate allows airflow to pass through, and the mesh size of the screen plate does not allow the materials to pass through.

Preferably, the lifting device comprises a lifting electric cylinder and a metal ring, the metal ring is sleeved on the outer wall of the bottom cavity, a lug is arranged on the outer wall of the metal ring, the cylinder body of the lifting electric cylinder is fastened and mounted on the support frame, and the piston rod of the lifting electric cylinder is fastened and connected with the lug.

Preferably, the lug and the lifting electric cylinder are respectively provided with one group on two sides of the metal ring which are oppositely arranged.

Preferably, the height of the metal ring is greater than or equal to the sum of the gap between the material bearing chamber and the drying chamber plus the gap between the material bearing chamber and the bottom chamber.

Preferably, the drying chamber is frustum-shaped, the opening of the small diameter of the drying chamber is located at the lower side, an installation frame is arranged in the drying chamber, the installation frame is located at the lower side of the air outlet, the dust catching bag covers the installation frame from bottom to top, the bag opening of the dust catching bag is tightly connected with the installation frame, and the bag body of the dust catching bag extends to the opening at the bottom of the drying chamber.

Preferably, the shape of mounting bracket is the disc, the central axis of mounting bracket and the central axis collineation of drying chamber, just the mounting bracket is the fretwork setting.

Preferably, be connected with flexible motor between the roof of drying chamber and the mounting bracket, the organism fastening installation of flexible motor is on the roof of drying chamber, just the telescopic link and the mounting bracket fastening connection of flexible motor.

Preferably, an air filter screen is further arranged at the air inlet.

Preferably, the meshes of the mesh plate are uniformly arranged.

Preferably, after the supporting material chamber is lifted in place by the lifting device, the bottom chamber, the supporting material chamber and the drying chamber are matched to form a closed space, and central axes of the bottom chamber, the supporting material chamber and the drying chamber are collinear.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, the material is conveyed into the dryer or out of the dryer through the material bearing chamber, the gas heated by the heater enters the dryer from the air inlet, sequentially passes through the screen plate and the dust catching bag from bottom to top and flows out of the dryer through the air outlet, so that the drying operation of the material is realized, and the telescopic electric cylinder drives the mounting frame and the dust catching bag to do lifting motion to shake down the dust on the dust catching bag, thereby being beneficial to improving the ventilation effect and improving the efficiency of drying the material;

2. according to the utility model, the material is supported by the screen plates with uniformly arranged meshes, so that the material is supported on one hand, and the air can be uniformly distributed on the other hand, thereby being beneficial to improving the effect and efficiency of drying the material;

3. according to the utility model, the lifting electric cylinder and the metal ring are matched to lift the material supporting cavity, so that on one hand, power is provided for lifting the material supporting cavity, and on the other hand, the metal ring is used for sealing the gap between the bottom cavity and the material supporting cavity, so that the stability of the working environment in the drying machine is improved, and the effect and efficiency of drying materials are improved.

Drawings

Other features, objects and advantages of the utility model will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic sectional view of the front overall structure of a fluidized bed dryer embodying the present invention;

fig. 2 is a schematic sectional view showing the overall structure of the side of the fluidized bed dryer according to the present invention.

Reference numerals:

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the utility model, but are not intended to limit the utility model in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the utility model. All falling within the scope of the present invention.

As shown in fig. 1, the fluidized bed dryer provided by the present invention includes a support frame 1, wherein the support frame 1 is a metal frame body having a certain structural strength, and the support frame 1 stands on the ground for the installation base of the whole fluidized bed dryer. The upside of support frame 1 has drying chamber 2 through bolt-up installation, and the bottom cavity 3 is equipped with to the solid mounting on support frame 1 of drying chamber 2 below, and movable mounting has bearing material chamber 4 between bottom cavity 3 and the drying chamber 2, and still is provided with the lifting device 5 that is used for lifting bearing material chamber 4 on the support frame 1.

As shown in fig. 2, an air outlet 6 is formed in the side wall of the drying chamber 2, a dust collecting bag 7 is installed in the drying chamber 2, the dust collecting bag 7 is located on the lower side of the air outlet 6, the dust collecting bag 7 is attached to the inner wall of the lower side of the drying chamber 2 or in small clearance fit with the inner wall of the lower side of the drying chamber 2, an air inlet 8 is formed in the side wall of the bottom chamber 3, and the air inlet 8 and the air outlet 6 are located on the same side. The gas enters the fluidized bed dryer from the air inlet 8, the gas dries the materials through the material bearing chamber 4, then the dust in the gas is captured by the dust capturing bag 7, and then the gas is discharged through the air outlet 6.

As shown in fig. 2, the drying chamber 2 is frustum-shaped, the opening of the small diameter of the drying chamber 2 is located at the lower side, a telescopic motor 9 is fixedly mounted at the center of the top wall of the drying chamber 2, the telescopic rod of the telescopic motor 9 is collinear with the central axis of the drying chamber 2, and an installation frame 10 is fixedly mounted at the end of the telescopic rod of the telescopic motor 9. The mounting bracket 10 is the disc, and the mounting bracket 10 has certain structural strength for the metal support body, and the mounting bracket 10 is the fretwork setting, and the central axis of mounting bracket 10 and the central axis collineation of drying chamber 2.

The dust catching bag 7 covers the mounting frame 10 from bottom to top, the opening of the dust catching bag 7 is fixedly connected with the mounting frame 10 through a rope, and the bag body of the dust catching bag 7 extends to the opening at the bottom of the drying chamber 2. The studio, mounting bracket 10 are located the downside of air outlet 6, and catch the inner wall laminating or the close clearance fit of dirt bag 7 and dry 2 downside, and gaseous this moment need just can discharge through air outlet 6 through catching dirt bag 7. The telescopic motor 9 is started to drive the mounting frame 10 and the dust catching bag 7 to do lifting movement, so that dust attached to the dust catching bag 7 is shaken off, and the ventilation effect and the drying efficiency can be improved.

As shown in fig. 1 and 2, the bearing material chamber 4 is frustum-shaped, and the opening of the bearing material chamber 4 with a small diameter is located at the lower side, and the opening at the upper side of the bearing material chamber 4 can be matched with the opening at the lower end of the drying chamber 2. The screen plate 11 used for placing materials is horizontally arranged in the material bearing chamber 4, the mesh size of the screen plate 11 allows airflow to pass through, the mesh size of the screen plate 11 does not allow materials to pass through, and the meshes of the screen plate 11 are uniformly arranged. With the help of being the even mesh that sets up on otter board 11, can improve the effect of dividing the wind, and then can improve drying efficiency.

Bottom cavity 3 is cylindrical, and the upside of bottom cavity 3 is to open the setting, and the opening of the 3 upside of bottom cavity and the opening adaptation of bearing material cavity 4 downside. The air inlet 8 is provided with a heater 12 and an air filter screen 13, the heater 12 is an electric heater, and the electric heater heats the air passing through the air inlet 8, so that the drying efficiency and the drying effect can be improved. The air filter screen 13 positioned at the air inlet 8 can filter impurities in the air, so that the air entering the dryer is clean air, and the material is prevented from being polluted by the impurities in the air.

The lifting device 5 is used for lifting the bearing material chamber 4, so that the top of the bearing material chamber 4 is tightly attached to the bottom of the drying chamber 2. The lifting device 5 comprises a lifting electric cylinder 14 and a metal ring 15, the metal ring 15 is coaxially sleeved on the outer wall of the bottom cavity 3 and is in sliding fit with the outer wall, two sides of the metal ring 15 which are oppositely arranged are respectively provided with a lug 16 in an integrated forming mode, the two lugs 16 are horizontally arranged, and the lifting electric cylinder 14 and the lugs 16 are arranged in a one-to-one correspondence mode.

The cylinder bodies of the two lifting electric cylinders 14 are all fastened and installed on the support frame 1, the piston rods of the two lifting electric cylinders 14 are all vertically arranged, and the end portions of the piston rods of the two lifting electric cylinders 14 are all fastened and connected with the corresponding lugs 16. When bearing material chamber 4 is stable to be placed on bottom cavity 3, two lifting electric jar 14 start simultaneously, and under two lifting electric jar 14's lifting effect, becket 15 upward movement promoted bearing material chamber 4 upward movement, and after the top of bearing material chamber 4 and the bottom of dry chamber 2 closely laminated, two lifting electric jars 14 closed.

The height of becket 15 is greater than the clearance between bearing material chamber 4 and the drying chamber 2 and adds the clearance sum between bearing material chamber 4 and the bottom chamber 3, thereby realized when the top of bearing material chamber 4 and the bottom close fitting of drying chamber 2, becket 15 can seal the clearance between bearing material chamber 4 and the bottom chamber 3 completely, make bottom chamber 3, the cooperation of 2 three of bearing material chamber 4 and drying chamber forms the enclosure space, and bottom chamber 3, the central axis collineation of bearing

material chamber

4 and 2 three of drying chamber. The fluidized bed dryer has the advantages that the stable working environment is ensured when the fluidized bed dryer performs drying operation, and the stability of the fluidized bed dryer in working is improved.

Principle of operation

In the work, a material is placed on the screen plate 11 in the bearing material chamber 4, the bearing material chamber 4 is conveyed to the position above the bottom chamber 3, then the two lifting electric cylinders 14 are started simultaneously, the lifting electric cylinders 14 drive the metal ring 15 to move upwards and push the bearing material chamber 4 until the top of the bearing material chamber 4 is completely attached to the bottom of the drying chamber 2, the two lifting electric cylinders 14 are stopped, and at the moment, the bottom chamber 3, the bearing material chamber 4 and the drying chamber 2 are matched to form a closed space; the air heated by the heater 12 enters the dryer from the air inlet 8, sequentially passes through the screen plate 11 and the dust catching bag 7 from bottom to top and then flows out of the dryer through the air outlet 6, so that the drying operation of the material is realized; the mounting rack 10 moves up and down under the action of the telescopic motor 9 and drives the dust catching bag 7 to move up and down, so that dust on the dust catching bag 7 is vibrated down, the ventilation effect is improved, and the drying efficiency is improved.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the utility model. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims

1. The fluidized bed dryer is characterized by comprising a support frame (1), wherein a drying chamber (2) is arranged on the upper side of the support frame (1), a bottom chamber (3) is arranged below the drying chamber (2), a material bearing chamber (4) is arranged between the bottom chamber (3) and the drying chamber (2), and a lifting device (5) for lifting the material bearing chamber (4) is arranged on the support frame (1);

an air outlet (6) is formed in the side wall of the drying chamber (2), a dust collecting bag (7) is arranged in the drying chamber (2), the dust collecting bag (7) is located on the lower side of the air outlet (6), and the dust collecting bag (7) is attached to or in clearance fit with the inner wall of the lower side of the drying chamber (2);

an air inlet (8) is formed in the side wall of the bottom chamber (3), and a heater (12) is arranged at the air inlet (8); a mesh plate (11) used for placing materials is arranged in the material bearing chamber (4), the mesh size of the mesh plate (11) allows airflow to pass through, and the mesh size of the mesh plate (11) does not allow the materials to pass through.

2. The fluidized bed dryer as claimed in claim 1, characterized in that the lifting device (5) comprises a lifting electric cylinder (14) and a metal ring (15), the metal ring (15) is sleeved on the outer wall of the bottom chamber (3), a lug (16) is arranged on the outer wall of the metal ring (15), the cylinder body of the lifting electric cylinder (14) is tightly mounted on the support frame (1), and the piston rod of the lifting electric cylinder (14) is tightly connected with the lug (16).

3. The fluidized bed dryer according to claim 2, wherein the lugs (16) and the lifting cylinders (14) are provided in groups on opposite sides of the metal ring (15).

4. Fluidized bed dryer according to claim 2, characterized in that the height of the metal ring (15) is greater than or equal to the sum of the gap between the material-bearing chamber (4) and the drying chamber (2) plus the gap between the material-bearing chamber (4) and the bottom chamber (3).

5. The fluidized bed dryer according to claim 1, wherein the drying chamber (2) is frustum-shaped, the opening of the drying chamber (2) with a small diameter is located at the lower side, a mounting frame (10) is arranged in the drying chamber (2), the mounting frame (10) is located at the lower side of the air outlet (6), the dust collection bag (7) covers the mounting frame (10) from the bottom to the top, the mouth of the dust collection bag (7) is tightly connected with the mounting frame (10), and the bag body of the dust collection bag (7) extends to the opening at the bottom of the drying chamber (2).

6. The fluidized bed dryer according to claim 5, characterized in that the mounting frame (10) is disc-shaped, the central axis of the mounting frame (10) is collinear with the central axis of the drying chamber (2), and the mounting frame (10) is openworked.

7. The fluidized bed dryer according to claim 5, characterized in that a telescopic motor (9) is connected between the top wall of the drying chamber (2) and the mounting frame (10), the body of the telescopic motor (9) is tightly mounted on the top wall of the drying chamber (2), and the telescopic rod of the telescopic motor (9) is tightly connected with the mounting frame (10).

8. The fluidized bed dryer according to claim 1, wherein an air filter (13) is further provided at the air inlet (8).

9. The fluidized bed dryer according to claim 1, wherein the meshes of the mesh plate (11) are uniformly arranged.

10. The fluidized bed dryer according to claim 1, wherein after the supporting material chamber (4) is lifted into position by the lifting device (5), the bottom chamber (3), the supporting material chamber (4) and the drying chamber (2) cooperate to form a closed space, and the central axes of the bottom chamber (3), the supporting material chamber (4) and the drying chamber (2) are collinear.