Fluidization device

Abstract

The fluidization device comprises a flange, canvas and a supporting plate, the flange is used for clamping the canvas, the supporting plate is installed on the flange, and the supporting plate is located below the canvas; air inlet holes are formed in the plate face of the supporting plate and are perpendicular to the supporting plate so that airflow can vertically penetrate through the supporting plate to reach the canvas. The fluidization device has the beneficial effects that the multiple air inlet holes are vertically formed in the supporting plate, and the efficiency of the fluidization device is improved; in addition, the canvas is made of the polyester fiber braided fabric, so that the breathability and durability of the canvas are improved, and the production cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of pneumatic conveying, and in particular to a fluidizing device. Background Art

[0002] A fluidizing device is a device that can disperse gas and is currently widely used in fields such as chemistry, petroleum, and metallurgy. The gas is compressed and transported to the fluidizing device for dispersion. The dispersed gas can be mixed with materials such as particles and dust, and the materials can exhibit a state similar to gas flow. Among them, the performance of the fluidizing device in dispersing gas plays an important role in the gasification effect of the material.

[0003] At present, common fluidizing devices mainly directly rush compressed gas into the fluidizing device through one or more air inlets, and then rely on the internal canvas to disperse the gas; generally, the setting area of the air inlet holes is relatively single, so that the gas volume and gas flow rate faced by different positions on the canvas are quite different; in addition, the material and air permeability of the canvas also determine the gasification performance of the fluidizing device; therefore, there is an urgent need for a fluidizing device that can evenly disperse the gas and is not easy to clog. Utility Model Content

[0004] One of the objects of the present application is to provide a fluidizing device that can solve at least one of the defects in the above-mentioned background technology.

[0005] In order to achieve at least one of the above-mentioned purposes, the technical solution adopted in the present application is: a fluidization device, including a flange, a canvas and a support plate, the flange is used to clamp the canvas, the support plate is installed on the flange, and the support plate is located below the canvas; an air inlet is provided on the plate surface of the support plate, and the air inlet is perpendicular to the support plate, so that the air flow passes vertically through the support plate to reach the canvas.

[0006] Preferably, the support plate is circular, and there are multiple air inlet holes, which are evenly distributed along the radial and / or circumferential direction of the support plate.

[0007] Preferably, the plurality of air inlet holes are divided into a plurality of groups, and the plurality of air inlet holes in each group are arranged at equal intervals along the circumferential direction of the support plate; and the plurality of groups of air inlet holes are arranged at equal intervals along the radial direction of the support plate.

[0008] Preferably, the air inlet is in the shape of an elongated strip.

[0009] Preferably, the air inlet is arc-shaped.

[0010] Preferably, two adjacent groups of air inlet holes are staggered along the circumferential direction.

[0011] Preferably, the arc length corresponding to the misalignment angle between two adjacent groups of the air inlet holes accounts for 30%-60% of the total length of the air inlet holes.

[0012] Preferably, the arc length corresponding to the misalignment angle between two adjacent groups of the air inlet holes accounts for 50% of the total length of the air inlet holes.

[0013] Preferably, the arc length of the air inlet holes is 20%-30% of the corresponding circumferential length of the group of air inlet holes.

[0014] Preferably, the distance between a group of the air inlet holes located on the innermost side of the support plate and the center of the support plate is 10%-15% of the radial length of the support plate.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] There are multiple air inlet holes vertically arranged on the support plate, which can disperse the compressed gas into multiple streams and flow vertically to the canvas, avoiding the phenomenon of uneven ventilation caused by local gas concentration at a certain position of the canvas.

[0017] Designing the canvas material to be a polyester fiber woven fabric can significantly improve the air permeability of the canvas, and has the advantages of wear resistance and low cost. In addition, when gas enters the canvas, the canvas expands and falls off the material attached to its surface, thereby reducing the risk of blockage of the fluidization device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall cross-sectional structure of this application.

[0019] Figure 2 For this application Figure 1 A local enlarged schematic diagram of point A in the middle.

[0020] Figure 3 This is a schematic diagram of the air intake structure of one of the embodiments in this application.

[0021] Figure 4 This is a schematic diagram of the air intake structure of another embodiment of the present application.

[0022] Figure 5 Schematic diagram of the staggered distribution of the air intake holes in this application.

[0023] Figure 6 For this application Figure 5 A partial enlarged schematic diagram of point B in the middle.

[0024] In the figure: flange 1, upper flange 11, lower flange 12, sealing gasket 100, groove 120, protrusion 121, canvas 2, mounting hole 200, support plate 3, air inlet 31, fastening screw 300, clamping plate 4, bolt 400, nut 401. DETAILED DESCRIPTION

[0025] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0026] In the description of this application, it should be noted that for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, the directions and positional relationships indicated are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing this application and simplifying the description, and 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 cannot be understood as limiting the specific scope of protection of this application.

[0027] It should be noted that the terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0028] The terms "comprises" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, product or apparatus.

[0029] One of the preferred embodiments of this application is as follows Figure 1 、 Figure 2 and Figure 3 As shown, a fluidizing device includes a flange 1, a canvas 2, and a support plate 3. The flange 1 can be used to clamp the canvas 2. When the flange 1 and the canvas 2 are installed, the side of the canvas 2 is placed inside the flange 1, and the flange 1 itself clamps the canvas 2 to secure it to the flange 1. The support plate 3 is mounted on the flange 1 and is located below the canvas 2. The support plate 3 is provided with an air inlet 31, which is perpendicular to the end surface of the support plate 3, so that the direction of airflow passing through the air inlet 31 is perpendicular to the support plate 3.

[0030] It should be known that an ordinary fluidizing device generally has an air inlet 31 set in a specific area; when the fluidizing device is running, although the gas passes through the air inlet 31, it cannot be dispersed in time, but needs to diffuse freely inside the fluidizing device before entering the canvas 2; if the gas flow rate is high, it is easy for the gas to enter the canvas 2 before diffusing, thereby making the area on the canvas 2 far away from the air inlet 31 less gas flows through; when the gas volume and gas flow rate in different areas of the canvas 2 are inconsistent, it will affect the gasification effect of the fluidizing device.

[0031] In this embodiment, if Figure 1 and Figure 3 As shown, the support plate 3 is circular in shape, and has a plurality of air inlet holes 31 , which are evenly distributed along the radial and / or circumferential direction of the support plate 31 .

[0032] It is understandable that when the air inlet holes 31 are evenly distributed on the support plate 3, the air flow can be divided into multiple streams by the air inlet holes 31 and pass through the support plate 3, avoiding excessive concentration of gas at a certain position of the fluidizing device to cause uneven ventilation.

[0033] In this embodiment, if Figure 3 As shown, the multiple air inlet holes 31 are divided into multiple groups, and the multiple air inlet holes 31 in each group are arranged at equal intervals along the circumferential direction of the support plate 3; the multiple groups of air inlet holes 31 are arranged at equal intervals along the radial direction of the support plate 3.

[0034] It should be noted that the air intake effect will also vary depending on the shape of the air inlet 31. Typically, the air inlet 31 of a fluidizing device is circular. A smaller diameter of the air inlet 31 can easily become clogged, thus affecting the air intake effect. A larger diameter can affect the airflow dispersion effect. Therefore, to improve the air intake performance of the air inlet 31, the shape of the air inlet 31 can be modified. There are various ways to configure the shape of the air inlet 31, including but not limited to the following two.

[0035] It should be noted that the specific number of groups of air inlet holes 31 and the specific number of air inlet holes 31 included in each group can be adaptively set in combination with the size of the air inlet holes 31 and the size of the support plate 3. For ease of understanding, several specific examples will be used for detailed description below.

[0036] Example 1: Figure 3 and Figure 4 As shown, the air inlet holes 31 can be arranged into four groups along the radial direction of the support plate 3, and each group includes four air inlet holes 31 arranged at equal intervals along the circumferential direction.

[0037] Example 2: For example Figure 5As shown, the air inlet holes 31 can be arranged into four groups along the radial direction of the support plate 3, and each group includes three air inlet holes 31 arranged at equal intervals along the circumferential direction.

[0038] In this embodiment, there are many ways to set the shape of the air inlet 31. However, according to the principles of fluid mechanics, when the gas passes through the air inlet 31 with a flat structure such as a long strip or an arc, the resistance it encounters will be reduced, thereby improving the air intake efficiency of the air inlet 31. Therefore, in this embodiment, the shape of the air inlet 31 can be set to a long strip, that is, Figure 3 As shown, it can also be an arc, that is, Figure 4 and Figure 5 Since the arc-shaped air inlet 31 can also effectively reduce the noise generated when the air flows in the hole, the specific shape of the air inlet 31 in this embodiment can preferably be an arc.

[0039] In this embodiment, for the arc-shaped air inlet holes 31, when the distribution of the air inlet holes 31 is different, the air intake efficiency and structural strength of the air inlet holes 31 will change. There are many distribution methods for the air inlet holes 31. For ease of understanding, the following will describe in detail two distribution methods for the air inlet holes 31.

[0040] Distribution method 1: Figure 4 As shown, the air inlet holes 31 located in adjacent groups in the same direction are arranged in sequence along the radial direction of the support plate 3.

[0041] Distribution method 2: Figure 5 As shown, the air inlet holes 31 located in adjacent groups in the same direction are staggered along the circumferential direction of the support plate 3.

[0042] It is understandable that, for the above-mentioned distribution method one, when two adjacent groups of air inlet holes 31 are arranged in sequence, the air inlet holes 31 are too concentrated in the same area, thereby reducing the structural strength of the support plate 3; at the same time, the area on the support plate 3 where no air inlet holes 31 are provided will also be concentrated, which can easily lead to uneven air intake. For the above-mentioned distribution method two, the two adjacent groups of air inlet holes 31 are staggered along the circumferential direction of the support plate 3, so that the areas on the support plate 3 containing air inlet holes 31 and the areas not containing air inlet holes 31 can be evenly distributed, and each air inlet hole 31 has a safety interval that meets the structural strength of the support plate 3, and also allows the airflow to flow evenly to the air inlet holes 31. Therefore, in order to take into account both the air intake efficiency of the air inlet holes 31 and the structural strength of the support plate 3, the above-mentioned distribution method two is preferably selected.

[0043] In this embodiment, if Figure 5 and Figure 6 As shown, the offset distance between two adjacent groups of air inlet holes 31 is set to L, and the length of L is 30%-60% of the arc length of the air inlet holes 31 in the inner group, and the preferred solution is 50%.

[0044] It should be noted that in order to ensure the stability of air intake into the same group of air intake holes 31, the arc lengths of the air intake holes 31 in the same group are kept consistent, and the arc lengths of the air intake holes 31 are all 20%-30% of the circumferential length corresponding to the air intake holes 31 in the group.

[0045] It can be understood that since the multiple groups of air inlet holes 31 are arranged around the center of the support plate 3, the multiple groups of air inlet holes 31 are in a concentric circular ring-shaped inclusion relationship; so that the arc length of the air inlet holes 31 on the outer ring is greater than the arc length of the air inlet holes 31 on the inner ring, thereby improving the air intake efficiency of the air inlet holes 31.

[0046] It can also be understood that the spacing between adjacent groups of air inlet holes 31 should not be too small, otherwise it will affect the structural strength of the support plate 3; therefore, the spacing size between adjacent groups of air inlet holes 31 is set to 30%-60% of the width of the air inlet hole 31, and the preferred spacing size is 50% of the width of the air inlet hole 31.

[0047] In this embodiment, if Figure 3 As shown, the distance from the air inlet 31 located on the innermost side of the pallet 3 to the center of the pallet 3 is 10%-15% of the radial length of the pallet 3; so that there is enough space at the center position of the pallet 3 to install the clamping plate 4, and the clamping plate 4 is located above the canvas 2, and the canvas 2 can be pressed to the center position of the pallet 3 through the clamping plate 4.

[0048] It should be known that when the fluidization device is working, the air flow enters the canvas 2 and causes the canvas 2 to expand and deform. If the canvas 2 expands too much, it will exceed the deformation range of the canvas 2 and cause the canvas 2 to be damaged; and in the present application, the compression plate 4 can press the center of the canvas 2 to the center position of the support plate 3 and make the canvas 2 concave, thereby limiting the deformation range of the canvas 2 and ensuring the safety of the canvas 2.

[0049] It is understood that, in order to improve the convenience of replacing the canvas 2, the mounting method between the pressing plate 4 and the supporting plate 3 is set to be detachable, that is, the pressing plate 4 is fixed to the upper part of the supporting plate 3 by fasteners. The fastening methods of the fasteners include but are not limited to the threaded engagement of the bolt 400 and the nut 401. The pressing plate 4 can be removed or installed by twisting the bolt 400 or the nut 401. The principle of threaded engagement is well known to those skilled in the art and will not be elaborated in detail here.

[0050] In this embodiment, if Figure 1 and Figure 2 As shown, the flange 1 includes an upper flange 11 and a lower flange 12 , and the canvas 2 is fixedly clamped between the upper flange 11 and the lower flange 12 by press-fitting between the upper flange 11 and the lower flange 12 .

[0051] It should be noted that since the canvas 2 is made of a breathable material, if the canvas 2 is clamped directly to the plane of the upper flange 11 and the lower flange 12, gas can easily diffuse through the canvas 2 to the outside of the fluidizing device, thereby reducing the gasification effect of the fluidizing device. Therefore, to enhance the sealing effect of the fluidizing device, a groove 120 is provided on the mating surface of the lower flange 12; the side of the canvas 2 can be placed in the groove 120. The depth of the groove 120 should not be greater than the thickness of the canvas 2 in its natural state, so that the upper flange 11 and the lower flange 12 can compress and clamp the canvas 2.

[0052] It should also be noted that, based on structural principles, to ensure the fluidizing device's durability, flange 1 is typically constructed of a material with high hardness and minimal deformation, such as metal or rigid plastic. However, it's difficult for the upper flange 11 and lower flange 12, made of metal or rigid plastic, to form a seal. Therefore, to further enhance the seal between the upper and lower flanges 11, 12, a sealing gasket 100 is installed between them. One side of the sealing gasket 100 mates with the upper flange 11, while the other side mates with the lower flange 12 and the canvas 2. When gas diffuses, the sealing gasket 100 blocks the gas from flowing into the gap between the upper and lower flanges 11, 12, thereby ensuring the fluidizing device's seal.

[0053] It is understandable that, considering the durability and sealing performance of the sealing gasket 100 , the sealing gasket 100 can be made of a material having sealing and anti-slip functions, such as rubber and asbestos.

[0054] In this embodiment, if Figure 2 As shown, a plurality of protrusions 121 are provided at the bottom of the groove 120. When the canvas 2 is placed in the groove 120, the upper flange 11 squeezes the canvas 2 and causes the canvas 2 to deform and fit against the protrusions 121, so as to limit the canvas 2 from sliding in the direction of separating from the flange 1, thereby further increasing the clamping effect of the upper flange 11 and the lower flange 12 on the canvas 2.

[0055] It should be known that when the shape of the raised portion 121 is different, the squeezing force on the canvas 2 will also change; in this application, the shape of the raised portion 121 is set to a trapezoid that is narrow at the top and wide at the bottom, so that the canvas 2 fits more closely to the surface of the raised portion 121. In addition, the top of the raised portion 121 is set to a plane to reduce the risk of the canvas 2 being damaged when squeezed by the raised portion 121.

[0056] It is understandable that the canvas 2 needs to be expanded and squeezed for a long time during the gasification process, and ordinary cloth is prone to wear and even tear after long-term use. The stability of the fluidization device can only be maintained by frequently replacing the canvas 2. Therefore, this application selects polyester fiber braid as the canvas 2; polyester fiber braid has good air permeability and is also wear-resistant and low cost.

[0057] In this embodiment, if Figure 2 and Figure 3 As shown, a plurality of corresponding mounting holes 200 are provided near the side edges of the upper flange 11 and the lower flange 12. The mounting holes 200 are distributed at axial intervals along the upper flange 11 and the lower flange 12. After the upper flange 11 and the lower flange 12 are fitted together and the mounting holes 200 at corresponding positions are aligned, the fastening screws 300 can be inserted for reinforcement.

[0058] It is understandable that there are many ways to fit the fastening screw 300 and the mounting hole 200, including but not limited to interference fit and threaded fit, but considering the ease of disassembly of the fluidization device in actual application, the fitting method of the fastening screw 300 and the mounting hole 200 is preferably the above-mentioned threaded fit.

[0059] The above describes the basic principles, main features, and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-described embodiments. The above-described embodiments and the specification merely illustrate the principles of the present application. Various changes and improvements may be made to the present application without departing from the spirit and scope of the present application. These changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A fluidizing device, characterized in that: It includes a flange, a canvas and a support plate, the flange is used to clamp the canvas, the support plate is installed on the flange, and the support plate is located below the canvas; an air inlet is provided on the plate surface of the support plate, and the air inlet is perpendicular to the support plate so that the air flow passes vertically through the support plate to reach the canvas.

2. The fluidizing device according to claim 1, wherein The supporting plate is circular, and the number of the air inlet holes is multiple, and the multiple air inlet holes are evenly distributed along the radial direction and / or circumferential direction of the supporting plate.

3. The fluidizing device according to claim 2, wherein: The multiple air inlet holes are divided into multiple groups, and the multiple air inlet holes in each group are arranged at equal intervals along the circumferential direction of the support plate; the multiple groups of air inlet holes are arranged at equal intervals along the radial direction of the support plate.

4. The fluidizing device according to claim 3, wherein The air inlet is in the shape of an elongated strip.

5. The fluidizing device according to claim 3, wherein: The air inlet is in an arc shape.

6. The fluidizing device according to claim 5, characterized in that Two adjacent groups of air inlet holes are staggered along the circumferential direction.

7. The fluidizing device according to claim 6, wherein: The arc length corresponding to the staggered angle between two adjacent groups of the air inlet holes accounts for 30%-60% of the total length of the air inlet holes.

8. The fluidizing device according to claim 7, wherein: The arc length corresponding to the offset angle between two adjacent groups of the air inlet holes accounts for 50% of the total length of the air inlet holes.

9. The fluidizing device according to claim 5, wherein: The arc length of the air inlet holes is 20%-30% of the circumference length of the corresponding air inlet holes in the group.

10. The fluidizing device according to claim 3, wherein The distance between a group of the air inlet holes located on the innermost side of the support plate and the center of the support plate is 10%-15% of the radial length of the support plate.

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