An upper air exhaust pressure type spray drying tower

Abstract

The utility model relates to food processing technical field discloses an upper exhaust pressure type spray drying tower, including base, the base top fixedly connected with support frame, support frame inner wall fixedly connected with drying tower, drying tower inner wall bottom fixedly connected with fluidized bed, the base top left side fixedly connected with high pressure pump, input end links feed pipe, and the output end is connected atomizing nozzle through the feed pipe, right side has air heater, connects the air pipe, and drying tower outer wall near top passes through fixed ring and links cyclone separator. Through high pressure pump, material is transported to the atomizing nozzle in the middle of drying tower inner wall through feed pipe, and material can be fully atomized into fine droplets, and the hot air that enters from air heater through air pipe forms efficient convection contact, and this central atomization design cooperates the upper exhaust structure, makes the contact area of hot air and material droplet maximization, and heat exchange is more fully, and drying time is shortened significantly, and the material processing capacity in unit time is improved.

Description

Technical Field

[0001] This utility model relates to the field of food processing technology, specifically to an upward-exhausting pressure spray drying tower. Background Technology

[0002] Spray drying technology, as a highly efficient method for dehydrating and drying materials, is widely used in various fields such as food processing, pharmaceutical manufacturing, and chemical production. Its core principle is to disperse liquid materials into fine droplets through an atomizing device. Upon contact with hot air, the droplets rapidly evaporate moisture, forming dried granular products. It boasts advantages such as rapid drying speed, stable product quality, and the ability to be produced continuously, thus occupying an important position in industrial production.

[0003] However, existing spray drying equipment still has many problems that need improvement in practical applications. On the one hand, the atomization device layout of some drying towers is unreasonable, such as the atomizing nozzles being off-center from the tower or not being fixed securely, resulting in uneven dispersion of material droplets and limited contact area with hot air. This not only reduces drying efficiency but also easily leads to local over-drying or under-drying of materials, affecting the consistency of product quality.

[0004] On the other hand, the air inlet and outlet structures of traditional drying towers are not optimally designed, resulting in chaotic flow paths of hot air within the tower and insufficient convective heat exchange with the liquid material droplets, leading to energy waste. Furthermore, some equipment lacks an effective secondary drying mechanism, causing the pre-dried material to easily clump together, requiring an additional crushing process, increasing the complexity and cost of the production process. Utility Model Content

[0005] The purpose of this invention is to provide an upward-exhausting pressure spray drying tower to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a top-exhaust pressure spray drying tower, comprising a base, a support frame fixedly connected to the top of the base, a drying tower fixedly connected to the inner wall of the support frame, a fluidized bed fixedly connected to the bottom of the inner wall of the drying tower, a high-pressure pump fixedly connected to the top left side of the base, a feed pipe fixedly connected to the input end of the high-pressure pump, a conveying pipe fixedly connected to the output end of the high-pressure pump, an atomizing nozzle fixedly connected to the other end of the conveying pipe, an air heater fixedly connected to the top right side of the base, an air inlet pipe fixedly connected to the connection end of the air heater, a fixing ring fixedly connected to the outer wall of the drying tower near the top, and a cyclone separator fixedly connected to the inner wall of the fixing ring.

[0007] Preferably, the top of the drying tower has a hole that matches the conveying pipe, and the surface of the conveying pipe is penetrated and fixedly connected to the hole.

[0008] Preferably, the top of the drying tower has a hole near the outer wall that matches the air inlet pipe, and the surface of the air inlet pipe is penetrated and fixedly connected to the hole.

[0009] Preferably, the outer wall of the drying tower is provided with a groove that matches the input pipe of the cyclone separator, and the input pipe of the cyclone separator passes through and is fixedly connected in the groove.

[0010] Preferably, the feed pipe and the atomizing nozzle are located in the center of the inner wall of the drying tower.

[0011] Compared with the prior art, this utility model provides an upward exhaust pressure spray drying tower, which has the following beneficial effects:

[0012] 1. This top-exhaust pressure spray drying tower uses a high-pressure pump to transport materials through a conveying pipe to an atomizing nozzle located in the center of the inner wall of the drying tower. The materials can be fully atomized into fine droplets, forming an efficient convective contact with the hot air entering from the air heater through the air inlet pipe. This central atomization design, combined with the top exhaust structure, maximizes the contact area between the hot air and the material droplets, resulting in more thorough heat exchange, significantly shortening the drying time, and increasing the material throughput per unit time.

[0013] 2. This top-exhaust pressure spray drying tower features a fluidized bed design at the bottom of the inner wall, which allows for secondary fluidized drying of the initially dried material. This effectively prevents material agglomeration and ensures uniform product particle size. Meanwhile, the cyclone separator at the top efficiently separates the dried product from the exhaust gas, reducing material loss and improving product purity. It is particularly suitable for fine chemical, food, and pharmaceutical industries where high particle size and purity are required. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 2 This is a three-dimensional cross-sectional view of the surface of the drying tower of this utility model;

[0017] Figure 3 for Figure 2 Enlarged 3D structural diagram at point A;

[0018] Figure 4 This is a three-dimensional schematic diagram of the fixing ring and cyclone separator of this utility model.

[0019] In the diagram: 1. Base; 2. Support frame; 201. Drying tower; 202. Fluidized bed; 3. High-pressure pump; 301. Feed pipe; 302. Conveying pipe; 303. Atomizing nozzle; 4. Air heater; 401. Air inlet pipe; 5. Fixing ring; 501. Cyclone separator. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] This utility model provides the following technical solution:

[0023] Example 1

[0024] Please see Figure 1-4 This utility model provides a technical solution: a top-exhaust pressure spray drying tower 201, including a base 1, a support frame 2 fixedly connected to the top of the base 1, a drying tower 201 fixedly connected to the inner wall of the support frame 2, a fluidized bed 202 fixedly connected to the bottom of the inner wall of the drying tower 201, a high-pressure pump 3 fixedly connected to the top left side of the base 1, a feed pipe 301 fixedly connected to the input end of the high-pressure pump 3, a conveying pipe 302 fixedly connected to the output end of the high-pressure pump 3, an atomizing nozzle 303 fixedly connected to the other end of the conveying pipe 302, an air heater 4 fixedly connected to the top right side of the base 1, an air inlet pipe 401 fixedly connected to the connection end of the air heater 4, a fixing ring 5 fixedly connected to the outer wall of the drying tower 201 near the top, and a cyclone separator 501 fixedly connected to the inner wall of the fixing ring 5.

[0025] The top of the drying tower 201 has a hole that matches the conveying pipe 302, and the surface of the conveying pipe 302 is penetrated and fixedly connected to the hole.

[0026] The top of the drying tower 201 has a hole near the outer wall that matches the air inlet pipe 401, and the surface of the air inlet pipe 401 is penetrated and fixedly connected to the hole.

[0027] The outer wall of the drying tower 201 has a groove that matches the input pipe of the cyclone separator 501, and the input pipe of the cyclone separator 501 passes through and is fixedly connected in the groove.

[0028] The feed pipe 302 and the atomizing nozzle 303 are located in the center of the inner wall of the drying tower 201.

[0029] In actual operation, when this device is used, the material to be dried first enters the high-pressure pump 3 through the feed pipe 301. Under the pressure of the high-pressure pump 3, the material is conveyed through the conveying pipe 302 to the atomizing nozzle 303 located in the center of the inner wall of the drying tower 201. Since the conveying pipe 302 and the atomizing nozzle 303 are located in the center of the drying tower 201, and the conveying pipe 302 is fixed through the matching hole at the top of the drying tower 201, the stability of the atomization process is ensured. The material is fully atomized into fine droplets here and evenly dispersed in the internal space of the drying tower 201. At the same time, the air heater 4 heats the incoming air, and the generated hot air is conveyed into the drying tower 201 through the air inlet pipe 401. The air inlet pipe 401 is fixed through the matching hole at the top of the drying tower 201 near the outer wall, so that the hot air enters from the top edge of the tower body and forms efficient convection with the atomized material droplets in the center. As hot air rises, it comes into full contact with the falling liquid material droplets, evaporating the moisture in the droplets through heat exchange, thus achieving initial drying of the material. The pre-dried material particles fall under gravity to the fluidized bed 202 at the bottom of the inner wall of the drying tower 201. The fluidized bed 202 maintains the material in a fluidized state through continuous airflow disturbance, undergoing secondary drying to further remove residual moisture, prevent material agglomeration, and ensure drying uniformity. The dust-laden exhaust gas generated during the drying process flows upward and enters the input pipe of the cyclone separator 501 through the matching groove on the outer wall of the drying tower 201. The cyclone separator 501 is securely installed on the outer wall of the drying tower 201 near the top using fixing rings 5. Inside the cyclone separator 501, centrifugal force separates the material particles from the gas in the exhaust gas. The separated material particles can be recycled, while the purified exhaust gas is discharged from the top of the cyclone separator 501, completing the entire drying and separation process.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A top-exhaust pressure spray drying tower (201), comprising a base (1), characterized in that: A support frame (2) is fixedly connected to the top of the base (1). A drying tower (201) is fixedly connected to the inner wall of the support frame (2). A fluidized bed (202) is fixedly connected to the bottom of the inner wall of the drying tower (201). A high-pressure pump (3) is fixedly connected to the top left side of the base (1). A feed pipe (301) is fixedly connected to the input end of the high-pressure pump (3). A conveying pipe (302) is fixedly connected to the output end of the high-pressure pump (3). An atomizing nozzle (303) is fixedly connected to the other end of the conveying pipe (302). An air heater (4) is fixedly connected to the top right side of the base (1). An air inlet pipe (401) is fixedly connected to the connection end of the air heater (4). A fixing ring (5) is fixedly connected to the outer wall of the drying tower (201) near the top. A cyclone separator (501) is fixedly connected to the inner wall of the fixing ring (5).

2. The top-exhaust pressure spray drying tower (201) according to claim 1, characterized in that: The top of the drying tower (201) has a hole that matches the conveying pipe (302), and the surface of the conveying pipe (302) is penetrated and fixedly connected to the hole.

3. The top-exhaust pressure spray drying tower (201) according to claim 1, characterized in that: The top of the drying tower (201) has a hole near the outer wall that matches the air inlet pipe (401), and the surface of the air inlet pipe (401) is penetrated and fixedly connected to the hole.

4. The top-exhaust pressure spray drying tower (201) according to claim 1, characterized in that: The outer wall of the drying tower (201) is provided with a groove that matches the input pipe of the cyclone separator (501), and the input pipe of the cyclone separator (501) passes through and is fixedly connected in the groove.

5. The top-exhaust pressure spray drying tower (201) according to claim 1, characterized in that: The feed pipe (302) and atomizing nozzle (303) are located in the center of the inner wall of the drying tower (201).

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