Spray dryer

Abstract

The utility model provides a spray dryer. The spray dryer comprises a drying tower, an atomizer, a heater, a connecting pipe and an air inlet assembly, the drying tower is internally provided with the air inlet assembly, the air inlet assembly comprises an upper air inlet disc and a lower air inlet pipe, when the drying tower is used, hot air is blown downwards through the upper air inlet disc to heat the interior of the drying tower, hot air is blown upwards and downwards through the lower air inlet pipe at the same time to conduct heating, heating can be more uniform through hot air blowing in multiple directions, and the lower air inlet pipe blows materials upwards, so that the drying tower is more uniform in heating. Certain resistance is generated on the materials, and the falling time of the materials is prolonged; besides, the inclined tuyeres can also blow air to the inner side wall of the drying tower, on one hand, the inner side wall is heated, the drying effect of materials close to the inner side wall is improved, on the other hand, the materials adhered to the inner side wall can be blown off, and the materials are prevented from adhering to the wall. The lighting assembly is arranged on the extension neck on the bin door, lighting can be conducted when the lighting lamp is turned on, the irradiation angle can be adjusted by rotating the rotating sleeve, the position of the lighting lamp can be adjusted by pushing the push rod, and the lighting range is widened.

Description

Technical Field

[0001] The utility model relates to the field of drying equipment, in particular to a spray dryer. Background Art

[0002] A spray dryer is a device that can simultaneously complete drying and granulation. According to process requirements, the pressure, flow rate of the feed liquid pump, and the size of the spray holes can be adjusted to obtain spherical particles with a required size ratio. The spray dryer is a type of continuous atmospheric dryer that sprays the liquid material into a mist with special equipment and dries it by contacting with hot air. When the existing spray dryer is in use, the material is prone to uneven drying, the drying efficiency is not high, the drying effect is not thorough, which easily leads to the dampness of the product, thus affecting the quality of the material, and it is also prone to wall sticking. Moreover, although the existing spray dryer has a viewing window, the interior of the drying tower is not clearly observable without external light sources, and it is impossible to accurately judge the internal working conditions. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems in the related art to a certain extent.

[0004] Therefore, the utility model provides a spray dryer to solve the above problems.

[0005] A spray dryer includes a drying tower, an atomizer, a heater, a connecting pipe, and an air inlet assembly; the atomizer is arranged in the middle of the top of the drying tower, the air inlet assembly is arranged inside the drying tower and is connected to the heater through the connecting pipe; the air inlet assembly includes an upper air inlet disc and a lower air inlet pipe, the upper air inlet disc is circular, the upper air inlet disc is sleeved on the outer periphery of the atomizer and fixed on the top of the drying tower, the lower surface of the upper air inlet disc is provided with 3 circles of uniformly distributed air nozzles, namely the inner ring air nozzles located in the inner layer, the middle air nozzles located in the middle, and the outer ring air nozzles located in the outer layer. The inner ring air nozzles and the outer ring air nozzles are both inclined, and the inner ring air nozzles face the center of the tank, the outer ring air nozzles face the inner wall of the drying tower, and the middle air nozzles are vertically downward; the lower air inlet pipe is located in the middle and lower part of the drying tower, the lower air inlet pipe is an annular pipe, and a plurality of upper air nozzles and lower air nozzles are respectively connected above and below the lower air inlet pipe. The upper air nozzles and the lower air nozzles are both inclined and both face the center of the tank;

[0006] A storage door is provided on the side wall of the drying tower. An extension neck is connected to the outer side wall of the storage door. A window made of a transparent material is fixed to the end face of the extension neck. A lighting assembly is provided on the side wall of the extension neck. The lighting assembly includes a rotating sleeve, a lighting lamp, a lamp head, a push rod, and a spring. The rotating sleeve is rotatably inserted into the side wall of the extension neck, and half of the rotating sleeve is located outside the extension neck and half is located inside the extension neck. A lighting lamp is inserted into one end of the rotating sleeve located inside the extension neck. A lamp head is provided on the lighting lamp and faces the inside of the tower. A push rod is inserted into one end of the rotating sleeve located outside the extension neck. The push rod extends into the rotating sleeve and is connected to the lighting lamp. The spring is sleeved on the push rod located outside the rotating sleeve, and a plug is provided at the end of the push rod.

[0007] Furthermore, a cleaning assembly is also provided on the window. The cleaning assembly includes a rotating shaft, a handle, and a scraping strip. The rotating shaft is rotatably arranged in the center of the window. A scraping strip that fits the window is provided on the rotating shaft inside the window, and a handle is provided on the rotating shaft outside the window.

[0008] Furthermore, the storage door is hinged to the drying tower. A U-shaped clamping member is provided at the edge of the storage door. A screw rod that is used in cooperation with the clamping member is provided on the drying tower. The screw rod is stuck in the clamping member and fixed by a nut.

[0009] Furthermore, the included angle between the inner ring air nozzle and the horizontal plane is 30 - 60°.

[0010] Furthermore, the included angle between the outer ring air nozzle and the horizontal plane is 30 - 60°.

[0011] Furthermore, the included angle between the upper air nozzle and the horizontal plane is 45 - 70°.

[0012] Furthermore, the included angle between the lower air nozzle and the horizontal plane is 45 - 70°.

[0013] Furthermore, the lighting assembly is provided above the extension neck.

[0014] Furthermore, the diameter of the extension neck gradually increases from the window to the side wall of the drying tower, so that the inner side wall of the extension neck forms an inclined guiding surface.

[0015] Advantages and beneficial effects of the present utility model:

[0016] The internal of the spray dryer described in the utility model is provided with an air inlet assembly, and the air inlet assembly includes an upper air inlet disc and a lower air inlet pipe. During use, hot air is blown downward through the upper air inlet disc to heat the inside of the drying tower, and hot air is blown upward and downward simultaneously through the lower air inlet pipe for heating. Blowing hot air in multiple directions can make the heating more uniform. Moreover, the lower air inlet pipe blows the material upward, generating a certain resistance to the material, prolonging the falling time of the material, and improving the drying effect. In addition, the inclined outer ring air nozzles, inner ring air nozzles, upper air nozzles, and lower air nozzles can also blow the air onto the inner side wall of the drying tower. On the one hand, it heats the inner side wall and improves the drying effect of the material close to the inner side wall. On the other hand, it can blow off the material sticking to the inner side wall and prevent the material from sticking to the wall. A lighting assembly is provided on the extension neck of the cabin door, and the lighting assembly includes a rotating sleeve, a lighting lamp, a lamp head, a push rod, and a spring. When lighting is required, the lighting lamp is turned on for lighting. Rotating the rotating sleeve can adjust the irradiation angle, and pushing the push rod can adjust the position of the lighting lamp to increase the lighting range. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of the embodiments in conjunction with the drawings, wherein:

[0018] Figure 1 is a schematic structural diagram of the spray dryer described in the present utility model;

[0019] Figure 2 is an internal structural diagram of the spray dryer described in the present utility model;

[0020] Figure 3 is a schematic structural diagram of the air inlet assembly described in the present utility model;

[0021] Figure 4 is a front structural diagram of the cabin door described in the present utility model;

[0022] Figure 5 is a reverse structural diagram of the cabin door described in the present utility model;

[0023] Figure 6 is a schematic structural diagram of the lighting assembly described in the present utility model.

[0024] Reference numerals:

[0025] 1. Drying tower; 11. Screw; 12. Nut; 2. Atomizer; 3. Heater; 4. Connecting pipe; 5. Air inlet assembly; 51. Upper air inlet plate; 52. Inner ring air nozzle; 53. Middle air nozzle; 54. Outer ring air nozzle; 55. Lower air inlet pipe; 56. Upper air nozzle; 57. Lower air nozzle; 6. Warehouse door; 61. Clamping part; 62. Extension neck; 63. Viewing window; 64. Cleaning assembly; 641. Rotating shaft; 642. Handle; 643. Scraping strip; 65. Lighting assembly; 651. Rotating sleeve; 652. Lighting lamp; 653. Lamp holder; 654. Push rod; 655. Spring; 7. Bracket. Detailed implementation manners

[0026] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0027] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 a limitation to the present utility model.

[0028] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0029] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0030] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the horizontal height of the first feature is less than that of the second feature.

[0031] In the present utility model, the terms "an embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0032] As Figure 1-6 shown, a spray dryer includes a drying tower 1, an atomizer 2, a heater 3, a connecting pipe 4, and an air inlet assembly 5; the atomizer 2 is arranged in the middle of the top of the drying tower 1, the air inlet assembly 5 is arranged inside the drying tower 1 and is connected to the heater 3 through the connecting pipe 4; the air inlet assembly 5 includes an upper air inlet disc 51 and a lower air inlet pipe 55, the upper air inlet disc 51 is circular, the upper air inlet disc 51 is sleeved on the outer periphery of the atomizer 2 and fixed on the top of the drying tower 1, and the lower surface of the upper air inlet disc 51 is provided with 3 circles of evenly distributed air nozzles, which are an inner ring air nozzle 52 located in the inner layer, a middle air nozzle 53 located in the middle, and an outer ring air nozzle 54 located in the outer layer. Both the inner ring air nozzle 52 and the outer ring air nozzle 54 are inclined, and the inner ring air nozzle 52 faces the center of the tank, the outer ring air nozzle 54 faces the inner wall of the drying tower 1, and the middle air nozzle 53 is vertically downward; the lower air inlet pipe 55 is located in the middle and lower part of the drying tower 1, the lower air inlet pipe 55 is an annular pipe, and a plurality of upper air nozzles 56 and lower air nozzles 57 are respectively connected above and below the lower air inlet pipe 55. Both the upper air nozzles 56 and the lower air nozzles 57 are inclined and both face the center of the tank;

[0033] On the side wall of the drying tower 1, there is a storage door 6. On the outer side wall of the storage door 6, an extension neck 62 is connected. On the end face of the extension neck 62, a viewing window 63 made of transparent material is fixed. On the side wall of the extension neck 62, a lighting assembly 65 is provided; the lighting assembly 65 includes a rotating sleeve 651, a lighting lamp 652, a lamp head 653, a push rod 654, and a spring 655. The rotating sleeve 651 is rotatably inserted on the side wall of the extension neck 62, and half of the rotating sleeve 651 is located outside the extension neck 62 and half is located inside the extension neck 62; at one end of the rotating sleeve 651 located inside the extension neck 62, the lighting lamp 652 is inserted. The lighting lamp 652 is provided with a lamp head 653, and the lamp head 653 faces the inside of the tower. At one end of the rotating sleeve 651 located outside the extension neck 62, the push rod 654 is inserted. The push rod 654 extends into the rotating sleeve 651 and is connected to the lighting lamp 652; the spring 655 is sleeved on the push rod 654 located outside the rotating sleeve 651, and a plug is provided at the end of the push rod 654.

[0034] During use, hot air is blown downward through the upper air inlet disc to heat the inside of the drying tower. At the same time, hot air is blown upward and downward through the lower air inlet pipe for heating. Blowing hot air from multiple directions can make the heating more uniform. Moreover, the lower air inlet pipe blows upward on the material, generating a certain resistance to the material, prolonging the falling time of the material, and improving the drying effect; in addition, the inclined outer ring air nozzles, inner ring air nozzles, upper air nozzles, and lower air nozzles can also blow the wind onto the inner side wall of the drying tower. On the one hand, it heats the inner side wall and improves the drying effect of the material close to the inner side wall. On the other hand, it can blow off the material sticking to the inner side wall and prevent the material from sticking to the wall. There is a lighting assembly on the extension neck of the storage door. When lighting is required, turn on the lighting lamp to provide lighting, which is convenient for observing the situation inside the tower. Rotating the rotating sleeve can adjust the irradiation angle, and pushing the push rod can adjust the position of the lighting lamp to increase the lighting range.

[0035] Exemplarily, a cleaning assembly 64 is further provided on the viewing window 63. The cleaning assembly 64 includes a rotating shaft 641, a handle 642, and a scraping strip 643. The rotating shaft 641 is rotatably arranged in the center of the viewing window 63. On the rotating shaft 641 inside the viewing window 63, a scraping strip 643 that fits the viewing window 63 is provided. On the rotating shaft 641 outside the viewing window 63, a handle 642 is provided.

[0036] The cleaning assembly can clean the viewing window to prevent the material from adhering to the viewing window and affecting the observation. During use, turn the handle to scrape off the adhered matter.

[0037] Exemplarily, the storage door 6 is hinged to the drying tower 1. A U-shaped clamping member 61 is provided at the edge of the storage door 6. A screw rod 11 that cooperates with the clamping member 61 is provided on the drying tower 1. The screw rod 11 is stuck in the clamping member 61 and fixed by a nut 12.

[0038] Exemplarily, the included angle between the inner ring air nozzle 52 and the horizontal plane is 30 - 60°. In a specific example, the included angle between the inner ring air nozzle 52 and the horizontal plane is 45°.

[0039] Exemplarily, the included angle between the outer ring air nozzle 54 and the horizontal plane is 30 - 60°. In a specific example, the included angle between the outer ring air nozzle 54 and the horizontal plane is 45°.

[0040] Exemplarily, the included angle between the upper air nozzle 56 and the horizontal plane is 45 - 70°. In a specific example, the included angle between the upper air nozzle 56 and the horizontal plane is 60°.

[0041] Exemplarily, the included angle between the lower air nozzle 57 and the horizontal plane is 45 - 70°. In a specific example, the included angle between the lower air nozzle 57 and the horizontal plane is 60°.

[0042] Exemplarily, the lighting assembly 65 is arranged above the extension neck 62.

[0043] Exemplarily, the diameter of the extension neck 62 gradually increases from the viewing window 63 towards the side wall of the drying tower 1, such that the inner side wall of the extension neck 62 forms an inclined guiding surface.

[0044] Exemplarily, the drying tower is installed on the bracket 7.

[0045] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A spray dryer, characterized in that: include: It includes a drying tower, an atomizer, a heater, a connecting pipe, and an air inlet assembly; the atomizer is arranged in the middle of the top of the drying tower, the air inlet assembly is arranged inside the drying tower, and is connected to the heater through a connecting pipe; the air inlet assembly includes an upper air inlet plate and a lower air inlet pipe, the upper air inlet plate is in a circular shape, the upper air inlet plate is sleeved on the outer periphery of the atomizer and fixed on the top of the drying tower, the lower surface of the upper air inlet plate is provided with 3 circles of evenly distributed air nozzles, which are an inner circle air nozzle located in the inner layer, a middle air nozzle located in the middle, and an outer circle air nozzle located in the outer layer, the inner circle air nozzle and the outer circle air nozzle are both inclined, and the inner circle air nozzle faces the center of the tank, the outer circle air nozzle faces the inner side wall of the drying tower, and the middle air nozzle faces vertically downward; the lower air inlet pipe is located in the middle and lower part of the drying tower, the lower air inlet pipe is an annular pipe, and a plurality of upper air nozzles and lower air nozzles are respectively connected above and below the lower air inlet pipe, and the upper air nozzles and the lower air nozzles are both inclined and face the center of the tank; A warehouse door is provided on the side wall of the drying tower, an extension neck is connected to the outer wall of the warehouse door, a window made of transparent material is fixed on the end face of the extension neck, and a lighting assembly is provided on the side wall of the extension neck; the lighting assembly comprises a rotating sleeve, a lighting lamp, a lamp holder, a push rod and a spring, the rotating sleeve is rotatably inserted on the side wall of the extension neck, and half of the rotating sleeve is located on the outside of the extension neck, and the other half is located on the inside of the extension neck; a lighting lamp is inserted at one end of the rotating sleeve located on the inside of the extension neck, a lamp holder is provided on the lighting lamp, and the lamp holder faces inside the tower, a push rod is inserted at one end of the rotating sleeve located on the outside of the extension neck, the push rod extends into the rotating sleeve and is connected with the lighting lamp; the spring sleeve is arranged on the push rod located outside the rotating sleeve, and a plug is provided at the end of the push rod.

2. The spray dryer according to claim 1, characterized in that The window is also provided with a cleaning assembly, which includes a rotating shaft, a handle and a scraper. The rotating shaft is rotatably arranged in the center of the window, a scraper fitted with the window is arranged on the rotating shaft inside the window, and a handle is arranged on the rotating shaft outside the window.

3. The spray dryer according to claim 1, characterized in that The warehouse door is hinged on the drying tower, a U-shaped clamp is arranged on the edge of the warehouse door, a screw rod used in conjunction with the clamp is arranged on the drying tower, the screw rod is clamped in the clamp and fixed by a nut.

4. The spray dryer according to claim 1, characterized in that The angle between the inner circle air nozzle and the horizontal plane is 30-60°.

5. The spray dryer according to claim 1, characterized in that The angle between the outer ring air nozzle and the horizontal plane is 30-60°.

6. The spray dryer according to claim 1, characterized in that The angle between the upwind nozzle and the horizontal plane is 45-70°.

7. The spray dryer according to claim 1, characterized in that The angle between the downwind nozzle and the horizontal plane is 45-70°.

8. The spray dryer according to claim 1, characterized in that The lighting assembly is arranged above the extension neck.

9. The spray dryer according to claim 1, characterized in that The diameter of the extended neck gradually increases from the viewing window to the side wall of the drying tower, so that the inner side wall of the extended neck forms an inclined guiding surface.

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