Spray dryer for solid beverage production

Abstract

The utility model discloses a solid beverage production spray dryer which comprises a feeding tank, a drying tower, an atomizer, a hot air inlet module, a cyclone separator and a cloth bag separator, and the cloth bag separator is arranged behind the cyclone separator. An adjusting mechanism for adjusting the size of an opening of the cyclone separator is arranged at an air inlet of the cyclone separator; the cloth bag separator comprises a cloth bag assembly and a buffer assembly opposite to the air inlet, the cloth bag assembly comprises a plurality of cylindrical cloth bags, and the edge of each cylindrical cloth bag is provided with a convex conical cloth bag structure. The size of the channel can be flexibly adjusted by arranging the adjusting mechanism, so that the separation rate of solid materials in the cyclone separator is increased, the separation burden of a subsequent cloth bag separator is reduced, and the separation efficiency is improved. The cloth bag is arranged to be cylindrical and conical, so that the area of the cloth bag can be increased, the filtering effect is further improved, and meanwhile, the cleaning frequency of the cloth bag is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of spray dryers, and more specifically to a spray dryer for producing solid beverages. Background Art

[0002] Spray dryer is a common industrial equipment used to convert liquid or slurry into powder by atomizing it into small droplets through a sprayer and then drying it quickly in a hot air flow. This drying method is suitable for many different types of materials, especially in the field of food processing, where solid beverages such as milk powder and soy milk powder all require this setting in the production process.

[0003] At present, after spray drying, the spray dryer uses a separator to separate solid powder and gas. Among them, the more commonly used separators are cyclone separators and bag separators. The size of the air inlet of the cyclone separator is fixed. When the air flow is small, there will be a problem of poor centrifugal effect. At the same time, the bag structure of the bag separator is mostly a rectangular structure, the filtering area is small, and the filtering rate is not good. Utility Model Content

[0004] The purpose of the utility model is to provide a spray dryer for producing solid beverages, so as to solve the technical problems existing in the above-mentioned background technology.

[0005] The technical solution of the utility model provides a solid beverage production spray dryer, comprising a feed tank, a drying tower, an atomizer, a hot air intake module, a cyclone separator and a bag separator, wherein the bag separator is arranged after the cyclone separator;

[0006] An adjusting mechanism for adjusting the opening size of the cyclone separator is provided at the air inlet of the cyclone separator; the bag separator includes a bag assembly and a buffer assembly opposite to the air inlet, the bag assembly includes a plurality of cylindrical bags, and an outwardly convex conical bag structure is provided at the edge of each cylindrical bag, and the conical bag structure is circumferentially arranged on the outside of the cylindrical bag.

[0007] In a preferred embodiment, the cloth bag assembly further comprises a sealing cloth bag connecting a plurality of the cylindrical cloth bags, and an air inlet channel is provided between adjacent cylindrical cloth bags.

[0008] In a preferred embodiment, a fixing ring for fixing the cloth bag assembly is disposed outside the cloth bag assembly, and a plurality of cylindrical cloth bags are connected by connecting strips.

[0009] In a preferred embodiment, the buffer assembly includes a bent buffer plate, which is arranged in two rows and staggered. The front buffer plates are connected to the rear buffer plates by a connecting rod, and the rear buffer plates are fixed to the inner wall of the tank body of the bag separator by the connecting rod.

[0010] In a preferred embodiment, the opening of the buffer plate faces the air inlet.

[0011] In a preferred embodiment, the regulating mechanism includes a partition arranged at the air inlet of the cyclone separator and a rotating switch member located on one side of the partition, the partition divides the air inlet into two air inlet spaces, and the rotating switch member is located on the side away from the inner wall of the cyclone separator.

[0012] In a preferred embodiment, the rotary switch element comprises a rotary plate and a micro motor connected to the rotary plate.

[0013] The beneficial effects of the technical solution of the utility model are:

[0014] By setting a rotating plate, the size of the channel can be flexibly adjusted to increase the separation rate of solid materials in the cyclone separator, reduce the separation burden of the subsequent bag separator, and improve the separation efficiency.

[0015] The design of the buffer plate can, on the one hand, slow down the gas after it enters, and on the other hand, a portion of the solid powder can be deposited during the impact process, reducing the burden of subsequent bag separation. At the same time, the gas after buffering is dispersed more evenly, which is more conducive to separation.

[0016] By setting the bag to a cylindrical and conical shape, the bag area can be increased, thereby increasing the filtering effect and reducing the frequency of bag cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 This is a schematic diagram of the structure of the bag separator of the utility model.

[0019] Figure 3 This is a schematic diagram of the structure of the bag assembly and the buffer assembly of the utility model.

[0020] Figure 4 This is a bottom view of the cloth bag assembly of the utility model.

[0021] Figure 5 This is a schematic diagram of the structure of a cyclone separator of the utility model.

[0022] Explanation of the accompanying drawings: 1 feed tank, 2 drying tower, 3 atomizer, 4 hot air intake module, 41 air filter, 42 blower, 43 air heater, 5 cyclone separator, 6 bag separator, 7 adjustment mechanism, 8 partition, 9 rotating plate, 10 micro motor, 11 bag assembly, 12 cylindrical bag, 13 conical bag structure, 14 sealing bag, 15 fixing ring, 16 connecting strip, 17 buffer assembly, 18 buffer plate, 19 connecting rod. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the sake of illustration and convenience of description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0024] like Figure 1-5 As shown, the technical scheme of the utility model provides a spray dryer for solid beverage production, including a feed tank 1, a drying tower 2, an atomizer 3, a hot air intake module 4, a cyclone separator 5 and a bag separator 6, wherein the bag separator 6 is arranged after the cyclone separator 5. The liquid material is pumped into the drying tower 2 through a feed pump, and atomized into small liquid particles by the atomizer 3 and enters the drying tower 2. At the same time, hot air is introduced into the drying tower 2. The hot air module includes an air filter 41, a blower 42 and a heater 43, etc. The air is filtered and then heated and then introduced into the drying tower 2 to contact with the liquid particles, so that the water evaporates instantly, and the particles are quickly dried into powdery substances, and then separated by the cyclone separator 5 and the bag separator 6 in turn, and the air is discharged from the dryer, and the material is discharged from the bottom of the drying tower 2, the cyclone separator 5 and the bag separator 6. This scheme improves the cyclone separator 5 and the bag separator 6 to increase the separation efficiency and separation effect.

[0025] The air inlet of the cyclone separator 5 is provided with an adjusting mechanism 7 for adjusting the opening size of the cyclone separator 5. The adjusting mechanism 7 comprises a partition plate 8 provided at the air inlet of the cyclone separator 5 and a rotating switch member located on one side of the partition plate 8, wherein the partition plate 8 divides the air inlet into two air inlet spaces, and the rotating switch member is located on a side away from the inner wall of the cyclone separator 5. The rotating switch member comprises a rotating plate 9 and a micro motor 10 connected to the rotating plate 9.

[0026] In the above scheme, the air inlet is divided into two channels by setting a partition 8, wherein a rotating plate 9 is set in the channel away from the side of the wind separator, and is opened or closed by a micro motor 10. When the air intake speed is slow, one channel can be closed by the rotating plate 9, so that the airflow entering the cyclone separator 5 can better form a swirl, and the solid powder is better deposited under the action of centrifugal force. At the same time, when the air intake speed is fast, the two channels can be opened at the same time, thereby increasing the air intake volume and improving the separation speed. By setting the rotating plate 9, the size of the channel can be flexibly adjusted to increase the separation rate of solid materials in the cyclone separator, reduce the separation burden of the subsequent bag separator 6, and improve the separation efficiency.

[0027] After being separated by the cyclone separator 5, there is still a certain amount of solid powder in the gas, which then needs to be separated by the bag separator 6. The bag separator 6 includes a bag assembly 11 and a buffer assembly 17 opposite to the air inlet.

[0028] After the gas enters the bag separator 6, it is first buffered by the buffer assembly 17. The buffer assembly 17 includes a buffer plate 18 with a bent arrangement. The buffer plates 18 are arranged in two rows and staggered. The front buffer plates 18 are connected to the rear buffer plates 18 by a connecting rod 19, and the rear buffer plates 18 are fixed to the inner wall of the tank of the bag separator by the connecting rod 19. The opening of the buffer plate 18 faces the air inlet. After entering, the gas hits the buffer plate 18. The design of the buffer plate 18 can decelerate and disperse the gas after entering on the one hand, and on the other hand, a part of the solid powder can be deposited during the collision process, reducing the burden of subsequent bag separation. At the same time, the gas after buffering is more evenly dispersed, which is more conducive to separation. In addition, the buffer plate 18 adopts a bending design, and the separated material will not be deposited on the buffer plate 18.

[0029] The bag assembly 11 includes a plurality of cylindrical bags 12, each of which is provided with an outwardly convex conical bag structure 13 at the edge thereof, and the conical bag structure 13 is circumferentially provided outside the cylindrical bag 12. The bag assembly 11 also includes a sealing bag 14 connecting the plurality of cylindrical bags 12, and an air inlet passage is provided between adjacent cylindrical bags 12. A fixing ring 15 for fixing the bag assembly 11 is provided outside the bag assembly 11, and the plurality of cylindrical bags 12 are connected by a connecting strip 16.

[0030] In the above scheme, by setting the bag to be cylindrical and conical, the area of ​​the bag can be increased, thereby increasing the filtering effect and reducing the frequency of bag cleaning. At the same time, the sealing bag 14 connected to the adjacent cylindrical bag 12 can also be filtered. The adjacent cylindrical bags 12 are connected by connecting strips 16. The outside is fixed by a fixing ring 15 to prevent the cylindrical bag 12 from twisting during the separation process, which affects the separation effect.

[0031] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A spray dryer for producing solid beverages, comprising a feed tank, a drying tower, an atomizer, a hot air intake module, a cyclone separator and a bag separator, characterized in that: The bag separator is arranged after the cyclone separator; An adjusting mechanism for adjusting the opening size of the cyclone separator is provided at the air inlet of the cyclone separator; the bag separator includes a bag assembly and a buffer assembly opposite to the air inlet, the bag assembly includes a plurality of cylindrical bags, and an outwardly convex conical bag structure is provided at the edge of each cylindrical bag, and the conical bag structure is circumferentially arranged on the outside of the cylindrical bag.

2. A solid beverage production spray dryer according to claim 1, characterized in that: The cloth bag assembly also includes a sealing cloth bag connecting a plurality of the cylindrical cloth bags, and an air inlet channel is provided between adjacent cylindrical cloth bags.

3. A solid beverage production spray dryer according to claim 1, characterized in that: A fixing ring for fixing the cloth bag assembly is arranged outside the cloth bag assembly, and a plurality of cylindrical cloth bags are connected by connecting strips.

4. A solid beverage production spray dryer according to claim 1, characterized in that: The buffer assembly includes a bent buffer plate, which is arranged in two rows and staggered. The front buffer plate is connected to the rear buffer plate by a connecting rod, and the rear buffer plate is fixed to the inner wall of the tank of the bag separator by the connecting rod.

5. A solid beverage production spray dryer according to claim 4, characterized in that: The opening of the buffer plate faces the air inlet.

6. A solid beverage production spray dryer according to claim 1, characterized in that: The regulating mechanism comprises a partition plate arranged at the air inlet of the cyclone separator and a rotating switch member located on one side of the partition plate, wherein the partition plate divides the air inlet into two air inlet spaces, and the rotating switch member is located on a side away from the inner wall of the cyclone separator.

7. A solid beverage production spray dryer according to claim 6, characterized in that: The rotary switch element comprises a rotary plate and a micro motor connected to the rotary plate.

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