Spray drying device for sour cherry fruit powder

Abstract

The utility model relates to an acid cherry fruit powder spray drying device, and belongs to the field of cherry fruit powder preparation, the acid cherry fruit powder spray drying device comprises an air supply system, an exhaust system and a drying tower, the drying tower comprises an outer tower body; an end cover is arranged at the upper end of the inner tower body, an atomizer is arranged in the center of the end cover, the end cover is connected with the top end of the outer tower body, the lower end of the inner tower body extends downwards to be arranged in the outer tower body, a gap is formed between the lower end of the inner tower body and the outer tower body, an air outlet cavity is formed in the end cover, and a first air outlet is formed in the position, corresponding to the gap, of the air outlet cavity. A second air outlet is formed in the position, corresponding to the interior of the inner tower body, of the air outlet cavity, an air inlet is formed in the side face, corresponding to the end cover, of the air outlet cavity, the air inlet is connected with an air supply system, the inner tower body and the outer tower body are detachably arranged, when powder adheres to the inner tower body, only the inner tower body needs to be detached independently for cleaning, overall detaching is not needed, and cleaning is convenient and fast.

Description

TECHNICAL FIELD

[0001] The utility model relates to cherry fruit powder preparation field especially, it relates to a kind of spray drying device of sour cherry fruit powder. BACKGROUND

[0002] Sour cherry sometimes is made into fruit powder for preservation and convenient use, and the preparation steps of sour cherry fruit powder include selecting material, extracting concentrated solution, concentrating extract, spray drying, crushing and sieving, product mixing and the like. Among them, spray drying is the key process of fruit powder preparation, which is mainly realized by spray dryer, and its working principle is that air is filtered and heated, enters the dryer, hot air is evenly into the drying chamber in spiral shape, and the liquid is sprayed into extremely fine mist droplets by high-speed centrifugal atomizer on the top of tower body, and hot air is contacted in parallel in extremely short time. However, the current spray dryer often has the problem of wall sticking during spray drying, and the slurry after wall sticking stays on the tower wall for a long time. Once it falls off and mixes with the rest of the fruit powder, it will affect the quality of the fruit powder. In order to reduce the adhesion of the dried fruit powder on the tower wall, the existing technology is committed to improving the tower body, such as the spray drying tower and drying system disclosed in patent CN118477326A, which mainly makes the hot air direction of each air supply port consistent along the circumferential direction of the tower body, so that a cyclone along the tower wall is formed in the tower body. The airflow of the cyclone blows the slurry and prevents it from sticking to the tower body. Although this reduces the amount of slurry sticking to the tower body to some extent, the degree of material sticking to the wall is related to the wind speed. When the wind speed is not too large, the slurry will inevitably stick to the wall when the wind speed is matched with the spray drying of the atomizer. When the wall sticking is serious, it needs to be stopped for cleaning. However, the current spray drying device is not easy to disassemble, and once it is stopped for cleaning, it needs to be disassembled in whole, which is very troublesome to clean up. CONTENT OF UTILITY MODEL

[0003] At present, when the drying tower of most spray drying devices sticks to the wall, it needs to be stopped for cleaning. The current spray drying device is not easy to disassemble, and once it is stopped for cleaning, it needs to be disassembled in whole, which is very troublesome to clean up. The present application designs a kind of spray drying device of sour cherry fruit powder, and the specific technical scheme adopted is as follows:

[0004] A kind of spray drying device of sour cherry fruit powder, including air supply system, exhaust system and drying tower, air supply system is detachably connected with the top of drying tower, exhaust system is detachably connected with the bottom of drying tower, and drying tower includes:

[0005] outer tower body;

[0006] The inner tower body is provided with an end cover at the upper end, the end cover is provided with an atomizer at the center, the end cover is connected with the top end of the outer tower body, the lower end of the inner tower body extends downwards and is arranged in the outer tower body and has a gap with the outer tower body, the end cover is provided with an air outlet cavity, the air outlet cavity is provided with a first air outlet at the position corresponding to the gap, the air outlet cavity is provided with a second air outlet at the position corresponding to the inner tower body, the side of the air outlet cavity is provided with an air inlet, and the air inlet is connected with a wind supply system.

[0007] Preferably, the inner side wall of the outer tower body is provided with at least two guide grooves, the at least two guide grooves are uniformly and spacedly arranged along a circumference of the outer tower body, the outer side wall of the inner tower body is provided with guide strips matched with the guide grooves, and the at least two guide strips are uniformly and spacedly arranged along a circumference of the inner tower body.

[0008] Preferably, the bottom end of the guide groove is closed, and the bottom surface of the guide strip is tightly attached to the bottom end of the guide groove after the guide strip is in place.

[0009] Preferably, the outer wall of the inner tower body is provided with a plurality of pads, the pads are arranged close to the bottom end of the inner tower body, and the plurality of pads are spacedly arranged along a circumference of the inner tower body.

[0010] Preferably, the upper end of the outer tower body is provided with a flange, the end cover is provided with a plurality of connecting holes close to the outer edge, and the end cover is connected with the outer tower body through bolts.

[0011] Preferably, a flexible sealing gasket is arranged between the end face of the flange and the end cover.

[0012] Preferably, a plurality of first air outlets are arranged, and the plurality of first air outlets are spacedly arranged along a circumference of the end cover.

[0013] Preferably, a plurality of second air outlets are arranged, and the plurality of second air outlets are spacedly arranged along a circumference of the end cover.

[0014] The inner tower body and the outer tower body are detachably arranged, when the inner tower body is bonded with powder, the inner tower body can be cleaned by being separately disassembled, and the whole does not need to be disassembled, so that the cleaning is convenient and fast. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the utility model;

[0016] Figure 2 It is a bottom view of the connection of the inner tower body and the outer tower body;

[0017] Figure 3 It is a structural view of the pads arranged on the outer wall of the inner tower body and the inner wall of the outer tower body.

[0018] In the figure, 1, exhaust system, 2, air intake system, 201, heater, 202, air blower, 203, filter, 3, drying tower, 301, inner tower body, 302, gap, 303, outer tower body, 304, end cover, 305, air outlet cavity, 306, first air outlet, 307, second air outlet, 308, flange, 309, bolt, 310, air inlet, 311, flexible sealing pad, 312, guide groove, 313, guide bar, 314, cushion block, 4, atomizer, 5, tank, 6, power pump. DETAILED DESCRIPTION

[0019] To make the technical features of the present scheme clear, the present utility model will be described in detail below through specific implementation manners and in combination with the drawings.

[0020] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0021] As Figures 1-2 shown, a kind of spray drying device of sour cherry fruit powder, including air supply system, exhaust system 1 and drying tower 3, air supply system is detachably connected with the top of drying tower 3, to facilitate air supply system with drying tower 3 is easily disassembled maintenance or replacement parts, above-mentioned air supply system uses existing structure, mainly including air blower 202, heater 201 and filter 203 etc., filter 203 is used to filter the impurity in air, and the air filtered by air blower 202 is transported into heater 201 and is heated to about 155 ℃-165 ℃ and enters drying tower 3.Exhaust system 1 is detachably connected with the bottom of drying tower 3, to facilitate exhaust system 1 with drying tower 3 is easily disassembled maintenance or replacement parts, above-mentioned exhaust system 1 uses existing structure, mainly including cyclone separator and induced draft fan etc., and cyclone separator can be multi-stage structure, to reduce the amount of fruit powder carried in air of induced draft fan.

[0022] The structure of the drying tower 3 comprises an outer tower body 303, an inner tower body 301 and an atomizer 4. The outer tower body 303 is cylindrical with a tapered discharge port at the lower end, and the inner tower body 301 is also cylindrical with a circular end cover 304 at the upper end. The atomizer 4 is arranged at the center of the end cover 304 and is connected with the external power pump 6 and the material tank 5. The atomizer 4 used here is a centrifugal atomizer 4 of the prior art, and its structure is not described in detail because it is prior art. The end cover 304 is connected with the top end of the outer tower body 303, so that after the inner tower body 301 is placed in the outer tower body 303, the inner tower body 301 can be fixed by connecting the end cover 304 with the outer tower body 303. The inner tower body 301 extends downward from the lower end to the position of the necked port of the outer tower body 303, and a gap 302 is formed between the inner tower body 301 and the outer tower body 303. The end cover 304 has an air outlet cavity 305, and the first air outlet 306 is arranged at the position corresponding to the gap 302, and the second air outlet 307 is arranged at the position corresponding to the inside of the inner tower body 301. In addition, the air inlet 310 is arranged on the side of the end cover 304, and the air inlet 310 is connected with the heater 201 of the air inlet system 2 through a pipeline. Hot air enters the drying tower 3 through the air inlet, the air outlet cavity 305, the first air outlet 306 and the second air outlet 307.

[0023] In one embodiment, in order to improve the stability of the inner tower body 301 and avoid the inner tower body 301 from shaking in the outer tower body 303, at least two guide grooves 312 are arranged on the inner side wall of the outer tower body 303, and the at least two guide grooves 312 are uniformly spaced along a circumference of the outer tower body 303. The outer side wall of the inner tower body 301 is provided with guide strips 313 matched with the guide grooves 312, and the at least two guide strips 313 are uniformly spaced along a circumference of the inner tower body 301. The guide strips 313 of the outer side wall of the inner tower body 301 are inserted into the guide grooves 312 of the outer tower body 303, and the end cover 304 is connected with the upper end of the outer tower body 303 to fix the inner tower body 301.

[0024] Further, in order to avoid the gravity of the inner tower body 301 from concentrating on the end cover 304, the bottom end of the guide groove 312 is closed, and the bottom surface of the guide strip 313 is tightly attached to the bottom end of the guide groove 312 after being in place. In addition to the support of the top end of the outer tower body 303, the bottom end of the guide groove 312 can also support the inner tower body 301.

[0025] In one embodiment, the fixing of the inner tower body 301 in the outer tower body 303 can also be achieved by the following method, for example, Figure 3As shown, a plurality of pads 314 are arranged on the outer wall of the inner tower body 301, the pads 314 are internally provided with a metal framework and externally wrapped with a rubber layer, the pads 314 are arranged close to the bottom end of the inner tower body 301, and the plurality of pads 314 are arranged along the circumference of the inner tower body 301 at intervals, when the inner tower body 301 is placed in the outer tower body 303, the pads 314 are pressed into the gap between the outer tower body 303 and the inner tower body 301 by deformation, and the existence of the pads 314 can reduce the shaking of the inner tower body 301.

[0026] Further, the connecting mode between the end cover 304 and the outer tower body 303 is as follows: a flange 308 is arranged on the upper end of the outer tower body 303, a plurality of connecting holes are arranged on the end cover 304 close to the outer edge, and the end cover 304 is connected with the outer tower body 303 through bolts 309, when it is needed to clean the powder adhered to the inner wall of the inner tower body 301, the bolts 309 are unscrewed, and then the inner tower body 301 is pulled out from the outer tower body 303.

[0027] Further, since the hot air also passes through the gap 302, in order to avoid the leakage of the hot air from the outer edge of the gap 302, a flexible sealing pad 311 is arranged between the end face of the flange 308 and the end cover 304, the purpose of the air inlet in the gap 302 is mainly to balance the air inlet in the inner tower body 301, so as to avoid the blowing of the fruit material into the gap 302.

[0028] Further, in order to make the air outlet uniform and expand the air volume, a plurality of the first air outlets 306 and the second air outlets 307 are arranged respectively, the plurality of first air outlets 306 are arranged along the circumference of the end cover 304 at intervals, and the plurality of second air outlets 307 are arranged along the circumference of the end cover 304 at intervals.

[0029] The specific embodiment cannot be used as a limitation on the protection scope of the utility model, and any alternative improvement or change made by the person skilled in the art to the embodiment of the utility model falls within the protection scope of the utility model.

[0030] The parts not described in the utility model are the known technology of the person skilled in the art.

Claims

1. A spray drying apparatus for sour cherry fruit powder, comprising an air supply system, an exhaust system, and a drying tower, wherein the air supply system is detachably connected to the top of the drying tower, and the exhaust system is detachably connected to the bottom of the drying tower, characterized in that, The drying tower includes: Outer tower body; The inner tower has an end cap at its upper end, with an atomizer at the center of the end cap. The end cap is also connected to the top of the outer tower. The lower end of the inner tower extends downward into the outer tower and has a gap between it and the outer tower. The end cap has an air outlet chamber inside, with a first air outlet corresponding to the gap and a second air outlet corresponding to the position inside the inner tower. The air outlet chamber has an air inlet on the side of the end cap, and the air inlet is connected to the air supply system.

2. The spray drying apparatus for sour cherry fruit powder according to claim 1, characterized in that, The inner wall of the outer tower body is provided with at least two guide grooves, and the at least two guide grooves are evenly spaced around the circumference of the outer tower body. The outer wall of the inner tower body is provided with guide strips that cooperate with the guide grooves, and the at least two guide strips are evenly spaced around the circumference of the inner tower body.

3. The spray drying apparatus for sour cherry fruit powder according to claim 2, characterized in that, The bottom of the guide groove is closed, and after the guide strip is in place, its bottom surface is in close contact with the bottom of the guide groove.

4. The spray drying apparatus for sour cherry fruit powder according to claim 1, characterized in that, The outer wall of the inner tower body is provided with a plurality of pads, which are located near the bottom end of the inner tower body and are spaced apart around the circumference of the inner tower body.

5. A spray drying apparatus for sour cherry fruit powder according to claim 1 or 3, characterized in that, The outer tower body has a flange at its upper end, and the end cover has multiple connection holes near its outer edge. The end cover is connected to the outer tower body by bolts.

6. The spray drying apparatus for sour cherry fruit powder according to claim 5, characterized in that, A flexible sealing gasket is provided between the flange end face and the end cover.

7. The spray drying apparatus for sour cherry fruit powder according to claim 1, characterized in that, Multiple first air outlets are provided, and the multiple first air outlets are arranged at intervals around the circumference of the end cover.

8. A spray drying apparatus for sour cherry fruit powder according to claim 1 or 7, characterized in that, Multiple second air outlets are provided, and the multiple second air outlets are arranged at intervals around the circumference of the end cover.

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