CN217707206U

CN217707206U - Fluidizing device

Info

Publication number: CN217707206U
Application number: CN202221437834.5U
Authority: CN
Inventors: 胡少诚; 王桂来; 朱小勇; 张谦
Original assignee: Zhejiang Weierxin Animal Nutrition And Health Products Co ltd; Xinchang Xinhecheng Vitamin Co ltd; Zhejiang NHU Co Ltd
Current assignee: Heilongjiang Xinhecheng Biotechnology Co ltd; Xinchang Xinhecheng Vitamin Co ltd; Zhejiang Weierxin Animal Nutrition And Health Products Co ltd; Zhejiang NHU Co Ltd
Priority date: 2022-06-08
Filing date: 2022-06-08
Publication date: 2022-11-01
Anticipated expiration: 2032-06-08

Abstract

The utility model relates to a fluidizing device, which comprises a housin, separate for last casing with the coaxial setting of casing, the airflow distribution board of casing down, and seted up a plurality of intercommunications and go up the casing, the through-hole of casing down, including the first hole, the second hole, the first hole distributes around airflow distribution board's axle center has many rings, and the second hole encircles the periphery that distributes in the first hole, and the export in first hole is located the epitheca, and its orientation is the tangential direction that uses the center in first hole and airflow distribution board's axle center line as radial circle to airflow distribution board's axle center one side skew, and the axis of the export in second hole is parallel with airflow distribution board's axis. The utility model provides a when forming rotatory air current in the upper shell, the problem of air current center vacuole formation avoids the powder to excessively gather to the wall, has improved space utilization, makes the suspension time of powder in the air current increase greatly, improves the exchange effect of powder and air current, avoids appearing the blind spot, and compact structure is reasonable, is difficult for leaking powder, blocks up.

Description

Fluidizing device

Technical Field

The utility model relates to a powder processing machinery technical field, concretely relates to fluidizer.

Background

The fluidized bed is a device for converting powder materials into fluidized states in a suspension motion under the action of gas or liquid, and is mainly applied to the processes of gas flow drying and gas flow cooling, and occasionally also applied to the process of chemical reaction.

Wherein the fluidized bed is widely applied to the technical field of powder processing machinery. Specifically, the powder is placed on a pore plate, air is introduced into the bottom of the pore plate through a pressure fan (or airflow is generated through an induced draft fan), and the powder is positioned between the initial fluidization speed and the carrying-out speed through the speed of the airflow. The powder violently rolls in the fluidized bed cylinder under the action of the drag force of the airflow, and rapidly exchanges substances and energy with the airflow to achieve the purposes of rapid heat transfer and mass transfer. However, the conventional fluidized bed generally has the following problems: 1. the aperture of the pore plate is generally smaller than the aperture of the particles, otherwise the problem of powder leakage or the problem of pore plate pore canal blockage caused by powder is easy to occur; 2. after the fluidization is finished, the hose is manually disassembled into the pore plate to extract the powder material in vacuum, which wastes time and labor; 3. the retention time of the airflow in the fluidized bed is short, and the utilization rate of hot (cold) quantity is low.

To this, chinese patent document No. CN 204693954U, vertical fluidized bed, which has a fluidized housing, is disclosed, wherein the fluidized housing has an air outlet at the top, an air inlet box at the bottom, a feed inlet at the upper side, a discharge outlet at the lower side, a fluidization plate between the air inlet box and the fluidized housing, and the fluidized housing is integrally composed of an upper cylindrical housing and a lower inverted conical housing; the fluidization plate is provided with a plurality of nail holes in annular array, the opening direction of each nail hole is arranged along the same arc direction, and the nail holes are formed by integrally matching a horizontal plate and a bending plate. Although the problem that the pore of the pore plate is blocked by powder leakage and powder can be alleviated through the nail holes, the utility model still has the following problems: 1. when discharging, the hose needs to be inserted into the discharge hole for manual material pumping, which wastes time and labor; 2. the middle of the fluidized plate is not provided with nail holes, so that the space utilization rate of the fluidized bed is low; 3. because of the structure reason of nail hole, powder dead zone is easily formed on the side wall of the fluidized bed, and the problem of uneven fluidization of the powder exists.

Disclosure of Invention

The utility model aims at providing a fluidizing device can make the powder be difficult for leaking, blockking up to fluidization space utilization is high in the device.

In order to achieve the purpose, the utility model adopts the technical proposal that:

the utility model provides a fluidizing device, includes casing, airflow distribution plate with the coaxial setting of casing will the casing is separated for last casing, lower casing, airflow distribution plate is last to have seted up a plurality of intercommunications go up the through-hole of casing, lower casing, the through-hole includes first hole, second hole, first hole winds airflow distribution plate's axle center distributes and has the multiring, just the second hole encircles the distribution and is in the periphery in first hole, the export in first hole is located in the upper casing, its orientation be with the center in first hole with airflow distribution plate's axle center line is the tangential direction of radial circle to airflow distribution plate's axle center one side skew, the axis of the export in second hole with airflow distribution plate's axis is parallel.

Preferably, an included angle α between the outlet of the first hole and a tangential direction of a circle having a radius equal to a connecting line between the center of the first hole and the axis of the airflow distribution plate is 10 ° to 20 °.

Further preferably, an included angle α between the outlet of the first hole and a tangential direction of a circle having a radius from a line connecting the center of the first hole and the axis of the airflow distribution plate is 12 ° to 18 °.

Preferably, a discharge port is formed in the upper shell, and an included angle beta between the axis of the discharge port and the axis of the upper shell is smaller than 90 degrees.

Further preferably, the upper shell is provided with a first conical barrel section, the caliber of one end, close to the air flow distribution plate, of the first conical barrel section is smaller than the caliber of the other end, far away from the air flow distribution plate, of the first conical barrel section, and the discharge port is formed in the first conical barrel section.

Still further preferably, the upper shell further has a first straight cylinder section, and the first straight cylinder section is connected between one end of the first conical cylinder section and the air flow distribution plate.

Still further preferably, the upper shell further has a second conical barrel section, the second conical barrel section is connected to the other end of the first conical barrel section, the caliber of one end, close to the airflow distribution plate, of the second conical barrel section is larger than the caliber of the other end, far away from the airflow distribution plate, of the second conical barrel section, and an air outlet is formed in the center of the other end of the second conical barrel section.

Still further preferably, a feed inlet is formed in the second conical barrel section.

Still further preferably, the first conical cylinder section is provided with an observation window for observing the interior of the shell.

Preferably, the lower shell is provided with a third conical barrel section, the caliber of one end, close to the air flow distribution plate, of the third conical barrel section is larger than the caliber of the other end, far away from the air flow distribution plate, of the third conical barrel section, and a slag discharge port is formed in the center of the other end of the third conical barrel section.

Further preferably, the lower shell further has a second straight cylinder section, and the second straight cylinder section is connected between one end of the third conical cylinder section and the air flow distribution plate.

Still further preferably, the second straight cylinder section is provided with an air inlet.

Preferably, the upper shell and the lower shell are detachably connected, and the air flow distribution plate is clamped between the upper shell and the lower shell.

Further preferably, the upper housing has an upper connection end face, the lower housing has a lower connection end face, the upper connection end face is connected with the lower connection end face, the upper housing and the lower housing pass through the upper connection end face and the lower connection end face are connected, the upper connection end face and the lower connection end face are connected by penetrating through the first fastener and/or clamping the second fastener at the edge.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the utility model discloses an export orientation of the tangential deviation center of the relative circle that locates of first hole, when having solved the interior formation rotatory air current of upper housing, the problem that the air current center forms the cavity, avoid the powder to excessively gather to the wall, improved space utilization, can make the suspension time of powder in the air current increase greatly, improve the exchange effect of powder and air current, simultaneously through the second hole, make the back in the first hole of outward flange form the air current, avoid appearing the dead zone, form stable rotatory air current in whole upper housing; the whole device has compact and reasonable structure and is not easy to leak powder and block.

Drawings

FIG. 1 is a schematic perspective view of a fluidizing device according to the present embodiment;

FIG. 2 is a schematic front view of a fluidizing apparatus in this embodiment;

FIG. 3 is a schematic top view of the fluidizing apparatus according to the present embodiment;

FIG. 4 isbase:Sub>A schematic cross-sectional view of section A-A of FIG. 3;

FIG. 5 is a schematic bottom view of the fluidization device of this embodiment;

FIG. 6 is a schematic top view of an embodiment of a gas flow distribution plate;

FIG. 7 is a schematic cross-sectional view of section B-B of FIG. 6;

FIG. 8 is a schematic bottom view of the gas distribution plate of the present embodiment.

In the above drawings: 1. a housing; 11. an upper housing; 111. a first straight barrel section; 112. a first conical section; 113. a second conical section; 12. a lower housing; 121. a second straight section; 122. a third conical section; 2. an air flow distribution plate; 21. a first hole; 211. a baffle; 22. a second hole; 31. an air inlet; 32. an air outlet; 33. a feed inlet; 34. a discharge port; 35. a slag discharge port; 36. and (6) an observation window.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-5, a fluidizing device, including a housing 1 and an airflow distribution plate 2, generally, the housing 1 is disposed up and down, the airflow distribution plate 2 is disposed coaxially with the housing 1 and is located in the housing 1, the housing 1 includes an upper housing 11 and a lower housing 12, the upper housing 11 and the lower housing 12 are separated by the airflow distribution plate 2, a plurality of through holes are opened on the airflow distribution plate 2, the through holes communicate with the upper housing 11 and the lower housing 12, a rotating airflow is formed in the housing 1 by guiding the through holes on the airflow distribution plate 2, and the blocking of the airflow distribution plate 2 by powder is avoided.

As shown in fig. 4 and 6-8, the through hole includes a first hole 21 and a second hole 22, inlets of the first hole 21 and the second hole 22 are both in the lower housing 12, outlets of the first hole 21 and the second hole 22 are both in the upper housing 11, the first hole 21 is distributed with a plurality of circles around the axis of the airflow distribution plate 2, the second hole 22 is distributed around the periphery of the first hole 21, specifically, in a range surrounded by the second hole 22, the first hole 21 is covered with a plate body from the second hole 22 to the axis of the airflow distribution plate 2, and a small space is formed between the first hole 21 and the first hole 21. The first hole 21 is used for changing the direction of the air flow and forming the rotating air flow in the upper housing 11, and the second hole 22 is used for solving the dead zone which can not be blown by the outer ring first hole 21.

As shown in fig. 6 and 7, the outlet of the first hole 21 is oriented (b direction in fig. 6): the tangential direction (direction a in fig. 6) of the circle taking the connecting line of the center of the first hole 21 and the axis of the airflow distribution plate 2 as the radius is inclined towards one side of the axis of the airflow distribution plate 2, that is, for the circle where each first hole 21 is located, the airflow has both tangential speed and normal speed after flowing out from the outlet of the first hole 21, and the normal speed is inward, so as to convey the powder to the middle part of the upper shell 11, thereby avoiding the centrifugal force to make the powder completely close to the inner wall surface of the upper shell 11 to move, meanwhile, if only having tangential speed, a cavity without airflow and powder can be generated in the center when the airflow rotates to the upper part, and the powder cannot obtain good substances and energy exchange, and has low efficiency. Specifically, an included angle α (α is an included angle between a and b in fig. 6) between the outlet of the first hole 21 and a tangential direction of a circle having a radius from a line connecting the center of the first hole 21 and the axis of the airflow distribution plate 2 is 10 ° to 20 °, when the angle is too small, the airflow cannot form a sufficient normal speed, when the angle is too large, the airflow is too internal-rotated, and the powder cannot obtain sufficient substance and energy exchange with the airflow. More preferably, the angle α between the outlet of the first hole 21 and the tangential direction of the circle whose radius is equal to the line connecting the center of the first hole 21 and the axis of the gas flow distribution plate 2 is 12 ° to 18 °, which is more favorable for improving the heat and mass transfer process of the powder and the gas flow, and can achieve the best fluidization effect.

Because the outlet of the first hole 21 is inclined inwards, the second hole 22 is arranged outside the first hole 21 of the outermost circle, and the outlet of the second hole 22 faces to the following directions: the axis of the outlet of the second hole 22 is parallel to the axis of the air flow distribution plate 2, so that the powder at the back of each first hole 21 in the outermost circle can be blown upwards, and dead zones are avoided. In the embodiment, a second hole 22 is arranged between every two adjacent first holes 21 of the outermost circle, so that the hidden trouble of dead zones behind every two adjacent first holes 21 of the outer circle is solved.

As shown in fig. 7, specifically, the first holes 21 are nail holes and extend up and down in the airflow distribution plate 2, but a flow guide plate 211 is disposed at the upper end of the first holes 21 to guide the airflow in the above direction, and the flow guide plate 211 is arc-shaped to prevent the airflow from generating a vortex to influence the formation of the rotating airflow in the housing 1; the second holes 22 extend vertically in the airflow distribution plate 2, and are not blocked at the upper ends of the second holes 22.

As shown in fig. 1, 2 and 4, the upper casing 11 and the lower casing 12 are detachably connected, and the airflow distribution plate 2 is sandwiched between the upper casing 11 and the lower casing 12, so that the inspection and the replacement of the orifice plate according to the physical properties of the powder are facilitated. The upper housing 11 has an upper connecting end surface, the lower end of the upper housing 11 extends radially outward to form the upper connecting end surface, the lower housing 12 has a lower connecting end surface, and the upper end of the lower housing 12 extends radially outward to form the lower connecting end surface. The upper connecting end face is connected with the lower connecting end face, and the upper shell 11 and the lower shell 12 are connected with the lower connecting end face through the upper connecting end face. Wherein go up the connection terminal surface and be equipped with multiple fixed form down between the connection terminal surface, go up connection terminal surface, down the connection terminal surface be the flange face, set up the bolt hole between them, connect through wearing to establish first fastener, first fastener can adopt the bolt, also can press from both sides at edge between them and establish the second fastener and connect, and the second fastener can adopt the checkpost. Adopt first fastener can make to connect inseparabler, adopt the second fastener can make the dismouting more convenient, can choose for use one kind alone or choose for use two kinds simultaneously and connect.

The upper shell 11 has a first straight cylinder section 111, a first conical cylinder section 112, and a second conical cylinder section 113, and is described by the airflow distribution plate 2 upward, one end of the first straight cylinder section 111 is connected to the airflow distribution plate 2, the other end of the first straight cylinder section 111 is connected to one end of the first conical cylinder section 112, and the other end of the first conical cylinder section 112 is connected to one end of the second conical cylinder section 113. The first cylindrical section 111 is a right cylinder with a short axial length, and the air flow forms a rotating air flow rapidly in the interval. The second conical section 113 is an inverted cone, the caliber of one end of the first conical section 112 is smaller than that of the other end, and the powder forms a fluidized state in the section and exchanges material and energy with the airflow. The second conical section 113 is a right conical, the caliber of one end of the second conical section 113 is larger than that of the other end thereof, the second conical section 113 is the top of the shell 1, and the shell 1 is capped at the other end of the second conical section 113.

The lower case 12 has a second straight cylinder section 121 and a third conical cylinder section 122, which are described below by the airflow distribution plate 2, one end of the second straight cylinder section 121 is connected to the airflow distribution plate 2, and the other end of the second straight cylinder section 121 is connected to one end of the third conical cylinder section 122. The second cylindrical section 121 is a right circular cylinder, and the device introduces air flow in the interval, so that the air flow enters the upper shell 11 through the first hole 21 and the second hole 22. The third cone section 122 is an inverted cone, the caliber of one end of the third cone section 122 is larger than that of the other end thereof, the third cone section 122 is the bottom of the shell 1, and the shell 1 is bottomed at the other end of the third cone section 122.

As shown in fig. 1 and 5, the housing 1 is provided with an air inlet 31, an air outlet 32, a feed inlet 33, a discharge outlet 34, a slag discharge port 35, and an observation window 36. The air inlet 31 opens onto the first straight section 111, and the air inlet 31 can be connected to a fan. The air outlet 32 is arranged in the center of the other end of the second conical cylinder section 113, and the air flow can smoothly rotate to flow to the air outlet 32 to be discharged by utilizing the upward gradually-shrinking caliber of the second conical cylinder section 113. The feed opening 33 opens into the second cylindrical section 113, i.e. at the top of the housing 1, for feeding. The discharge port 34 is arranged on the first conical cylinder section 112, and an included angle β between the axis of the discharge port 34 and the axis of the upper shell 11 is smaller than 90 °, that is, the discharge port 34 is arranged downward, when the rotating position of the powder rises to the height of the discharge port 34, the powder automatically enters the discharge port 34 under the action of centrifugal force, so that the powder is automatically discharged, and the tangential speed of the powder at the discharge port 34 is conveniently reduced by matching with the inverted cone shape of the second conical cylinder section 113, so that the powder can smoothly enter the discharge port 34. The slag discharge port 35 is provided at the center of the other end of the third conical barrel section 122, and slag falling from the air flow distribution plate 2 can be concentrated toward the middle by using the downwardly gradually shrinking caliber of the third conical barrel section 122 and discharged from the slag discharge port 35 together. The observation window 36 is opened on the first conical section 112, the observation window 36 is provided with a barrier made of transparent material, the observation window 36 is used for observing the inside of the casing 1, so as to be convenient for knowing the fluidization state of the powder, and preferably, the observation window 36 and the discharge port 34 are arranged on the same height to observe the state of the powder to be discharged.

In this embodiment, the outlet 34 can be opened to a greater extent and the operating pressure inside the housing 1 can be made lower than the external atmospheric pressure when the device is in operation. When the particle size difference of the fluidized powder particles is large, a small amount of fine powder always enters the discharge port 34, and at the moment, only a small amount of air needs to enter from the discharge port 34, so that the problem that the fine powder is gathered at the discharge port 34 and cannot be dried effectively can be avoided.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

Claims

1. The utility model provides a fluidizing device, includes casing, airflow distribution plate with the coaxial setting of casing will the casing is separated for last casing, lower casing, airflow distribution plate is last to have seted up a plurality of intercommunications go up the through-hole of casing, lower casing, its characterized in that: the through hole comprises a first hole and a second hole, the first hole is distributed with a plurality of circles around the axis of the airflow distribution plate, the second hole is distributed around the periphery of the first hole, the outlet of the first hole is positioned in the upper shell, the outlet of the first hole deflects towards one side of the axis of the airflow distribution plate in the tangential direction of a circle taking the connecting line of the center of the first hole and the axis of the airflow distribution plate as the radius, and the axis of the outlet of the second hole is parallel to the axis of the airflow distribution plate.

2. The fluidizing apparatus according to claim 1, wherein: the outlet of the first hole faces an included angle alpha of 10-20 degrees with the tangential direction of a circle which has a radius equal to the connecting line of the center of the first hole and the axis of the airflow distribution plate.

3. The fluidizing apparatus according to claim 2, wherein: the outlet of the first hole faces an included angle alpha of 12-18 degrees between the outlet of the first hole and the tangential direction of a circle which has the radius of the connecting line of the center of the first hole and the axis of the airflow distribution plate.

4. The fluidizing apparatus according to claim 1, wherein: the upper shell is provided with a discharge port, and an included angle beta between the axis of the discharge port and the axis of the upper shell is smaller than 90 degrees.

5. The fluidizing apparatus according to claim 4, wherein: the upper shell is provided with a first conical barrel section, the caliber of one end, close to the air flow distribution plate, of the first conical barrel section is smaller than the caliber of the other end, far away from the air flow distribution plate, of the first conical barrel section, and the discharge port is formed in the first conical barrel section.

6. The fluidizing apparatus according to claim 5, wherein: the upper shell is also provided with a first straight cylinder section, and the first straight cylinder section is connected between one end of the first conical cylinder section and the air flow distribution plate.

7. The fluidizing apparatus according to claim 5, wherein: the upper shell is further provided with a second conical barrel section, the second conical barrel section is connected to the other end of the first conical barrel section, the caliber of one end, close to the airflow distribution plate, of the second conical barrel section is larger than the caliber of the other end, far away from the airflow distribution plate, of the second conical barrel section, and an air outlet is formed in the center of the other end of the second conical barrel section.

8. The fluidizing apparatus according to claim 1, wherein: the lower shell is provided with a third conical barrel section, the caliber of one end, close to the airflow distribution plate, of the third conical barrel section is larger than the caliber of the other end, far away from the airflow distribution plate, of the third conical barrel section, and a slag discharge port is formed in the center of the other end of the third conical barrel section.

9. The fluidizing device according to claim 8, wherein: the lower shell is also provided with a second straight cylinder section, and the second straight cylinder section is connected between one end of the third conical cylinder section and the air flow distribution plate.

10. A fluidising apparatus as claimed in claim 1 or 5 or 6 or 7 or 8 or 9 in which: the upper shell and the lower shell are detachably connected, and the air flow distribution plate is clamped between the upper shell and the lower shell.