Spraying mesh belt type combined drying system

Abstract

The utility model relates to the technical field of spray drying, and discloses a spray mesh belt type combined drying system which comprises a drying tower and a conveying mesh belt, one end of the drying tower is used for feeding materials and hot air, the other end of the drying tower is open and corresponds to the conveying mesh belt, and the drying tower tends to expand from top to bottom. Materials dried by the drying tower can fall on the conveying net belt, the conveying net belt is divided into a plurality of drying sections in the conveying direction, and hot air or cold air can be introduced into each drying section to dry the materials. According to the drying tower, a conical section on the lower portion is omitted, but the drying tower is of an open structure, the risk that materials are accumulated at the lower end of the drying tower is avoided, the drying tower is suitable for processing food material particles, the retention time of the materials is prolonged due to the drying effect of the conveying net belt, the materials are slowly dried and crystallized, and moisture in the particles is fully diffused; and particle caking caused by continuous diffusion of water is further avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of spray drying, in particular to a spray mesh belt type combined drying system. Background Art

[0002] Powder particles in the food field, such as fruit powder, vegetable powder, chicken powder, etc., are processed by equipment such as spray drying towers. First, the feed liquid is transported to the nozzle in the drying tower. The nozzle disperses the feed liquid into fine droplets and sprays them evenly into the tower. At the same time, hot air is introduced into the tower. The sprayed droplets are fully in contact with the hot air, and the water on the surface of the droplets evaporates rapidly to form a solid particle shell. As the water continues to evaporate, the water inside the particles gradually diffuses outward and evaporates. The particles gradually dry and solidify, and their shape and size gradually stabilize. The dried powder particles and hot air are discharged out of the tower, and some of the powder particles entrained by the hot air enter the cyclone separator, bag filter and other equipment together with the hot air to separate the powder particles from the hot air.

[0003] The spray drying tower, cyclone separator, bag filter and other equipment constitute the drying system. The traditional drying system for processing food particles has some defects:

[0004] The traditional spray drying tower is columnar at the top and conical at the bottom. When processing materials with high viscosity, strong moisture absorption, high sugar content, and high oil content, it is easy for materials to accumulate or even agglomerate in the cone section. If these lumps of materials stay in the dryer for too long, they will change color or lose their flavor. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a spray mesh belt type combined drying system.

[0006] According to the utility model, a spray mesh belt type combined drying system is proposed, which includes a drying tower and a conveying mesh belt, one end of the drying tower is used to enter the material and hot air, and the other end is open and corresponds to the conveying mesh belt;

[0007] Different from the traditional drying system, the drying tower expands from top to bottom, so that the materials dried by the drying tower can fall on the conveyor belt. The conveyor belt is divided into several drying sections in the conveying direction of the conveyor belt. Hot air or cold air can be introduced into each drying section to dry the materials.

[0008] The advantages of such a setting are: the drying tower in the drying system eliminates the lower cone section and is replaced with an open structure, which avoids the risk of material accumulation at the lower end of the drying tower and is suitable for the processing of food material particles; and the open end of the drying tower corresponds to the conveyor mesh belt, and the drying effect of the conveyor mesh belt prolongs the residence time of the material, and the material dries slowly and crystallizes slowly, ensuring that the moisture in the particles is fully diffused, further avoiding the agglomeration of particles caused by the continued diffusion of moisture.

[0009] In some examples of the present invention, the drying system further comprises a mesh belt box, the transport mesh belt is placed in the mesh belt box, and a docking port is formed on the mesh belt box, and the docking port is connected to the open end of the drying tower;

[0010] The purpose of such arrangement is that the material dried in the drying tower completely enters the transport mesh belt in the mesh belt box through the docking port, thus preventing the material from being scattered outside the drying system.

[0011] In some examples of the utility model, the interface is provided with a material baffle plate extending from the open end of the drying tower into the mesh belt box, and the function of the material baffle plate is to guide the material so that the material particles are completely received by the transport mesh belt.

[0012] In some examples of the present invention, the transport mesh belt is an annular mesh belt, which is supported and driven by wheels arranged at both ends of the annular mesh belt, and the wheels are driven to rotate by a power component such as a motor.

[0013] In some examples of the present invention, support members are provided at sections of the conveyor mesh belt for receiving materials, and the support members are used to support the conveyor mesh belt so that the conveyor mesh belt is not deformed by the gravity of the materials.

[0014] In some examples of the present invention, the support member extends along the conveyor mesh belt, and the support member is one or more of a grid structure, a woven structure, and a punching structure, that is, the support member provides support at the position where the material stays on the conveyor mesh belt, and the support member needs to be a porous structure to facilitate the flow of air from the upper end of the conveyor mesh belt to the lower end of the conveyor mesh belt, thereby passing through the material and exchanging heat with the material.

[0015] In some examples of the utility model, air inlets and air outlets are provided at positions corresponding to each drying section of the mesh belt box. After hot air or cold air enters the mesh belt box through the air inlet, it acts on the material and is discharged through the air outlet.

[0016] In some examples of the present invention, the drying system further includes a cyclone dust collector, and each air outlet is connected to an input end of the cyclone dust collector, so that particles entrained by the wind body are separated by the action of the cyclone dust collector.

[0017] In some examples of the present invention, the drying system further includes a bag dust collector, the wind output end of the cyclone dust collector is connected to the input end of the bag dust collector, and the cyclone dust collector is used to further separate the powder particles.

[0018] In some examples of the present invention, the powder output end of the cyclone dust collector and the powder output end of the bag dust collector are both connected to the drying tower through a powder return pipe, that is, the powder particles separated by the cyclone dust collector and the bag dust collector enter the drying tower again for drying and granulation operations.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of the spray mesh belt combined drying system in the embodiment of the utility model.

[0022] Figure 2 It is a schematic diagram of the transportation process of materials on the transport network belt in the embodiment of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the transport mesh belt in the embodiment of the utility model;

[0024] Figure 4 A schematic diagram of an implementation of a support member in an embodiment of the utility model;

[0025] Figure 5 It is a schematic diagram of the structure of the air outlet box in the embodiment of the utility model.

[0026] Description of reference numerals:

[0027] Drying tower 1, nozzle 11, hot air inlet 12;

[0028] Transport mesh belt 2;

[0029] Drying sections a1, a2, a3;

[0030] Mesh belt box 3, docking port 31, material baffles 32a, 32b, air inlet 33, second air baffle 34;

[0031] Wheel body 4;

[0032] Support member 5;

[0033] Air outlet box 6, first air shield 61, air outlet 62;

[0034] Cyclone dust collector 7, wind body output end 71, powder output end 72 of cyclone dust collector;

[0035] Bag dust collector 8, powder output end 81 of the bag dust collector;

[0036] Anti-powder tube 9. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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 therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0041] Figure 1 It is a structural schematic diagram of the spray mesh belt combined drying system.

[0042] Figure 2 A schematic diagram of the transportation process of materials on the transport network;

[0043] Figure 3 It is a structural schematic diagram of the transport mesh belt;

[0044] Figure 4 is a schematic diagram of an implementation method of a support member;

[0045] Figure 5 It is a structural schematic diagram of the air outlet box;

[0046] Reference below Figure 1 to Figure 5 The spray mesh belt combined drying system of the embodiment of the utility model is shown.

[0047] For details, please see the attached Figure 1 The combined drying system includes a drying tower 1 and a conveyor mesh belt 2. One end of the drying tower 1 is used for the entry of materials and hot air, and the other end is open and corresponds to the conveyor mesh belt 2. The drying tower 1 tends to expand from top to bottom, so that the materials dried by the drying tower 1 can fall on the conveyor mesh belt 2.

[0048] Please continue to see the attached Figure 1 A nozzle 11 is arranged inside the upper end of the drying tower 1, and the liquid is atomized into small droplets through the nozzle 11 and diffused in the drying tower 1; a hot air inlet 12 is also arranged at the upper end of the drying tower 1, and the hot air inlet 12 is used to introduce hot air outside the drying tower 1 into the drying tower 1, so that the hot air meets the atomized small droplets to form powder particles.

[0049] Please continue to see the attached Figure 1 , it is divided into three drying sections a1, a2, and a3 in the conveying direction of the transport mesh belt 2. Hot air can be introduced into the drying sections a1 and a2, and cold air can be introduced into the drying section a3 to dry the material and cool the material. The cooled material is discharged as a finished product.

[0050] Please see attached Figure 2The material falls onto the conveyor mesh belt 2 at the open end of the drying tower 1, forming a certain amount of accumulation M on the conveyor mesh belt 2. As the conveyor mesh belt 2 moves, it passes through the drying sections a1, a2, and a3 in sequence. After being further dried by hot air in the drying sections a1 and a2, it passes through the drying section a3 and is dried by cold air, and is finally discharged from the end of the conveyor mesh belt 2.

[0051] Please see attached Figure 3 In one embodiment of the combined drying system, the transport mesh belt 2 is a non-metallic woven mesh with holes, or a metal perforated mesh, and the shape of the mesh is square;

[0052] In other embodiments, the shape of the mesh may also be circular, rectangular, or other shapes.

[0053] Please continue to see the attached Figure 1 The combined drying system also includes a mesh belt box 3, the transport mesh belt 2 is placed in the mesh belt box 3, and a docking port 31 is formed on the mesh belt box 3, the docking port 31 is connected with the open end of the drying tower 1, so that the material at the open end of the drying tower 1 completely enters the mesh belt box 3 and falls onto the transport mesh belt 2.

[0054] Please continue to see the attached Figure 1 The docking port 31 is provided with a baffle plate extending from the open end of the drying tower 1 into the mesh belt box 3, wherein the baffle plate includes baffle plates 32a and 32b, wherein the baffle plate 32a is closer to one end of the transport mesh belt 2, and the baffle plate 32b is closer to the middle of the transport mesh belt 2, and the baffle plate 32a extends to contact with the transport mesh belt 2 to prevent the material from falling at one end of the transport mesh belt 2, and a space for the material to pass is reserved between the baffle plate 32b and the transport mesh belt 2.

[0055] Please continue to see the attached Figure 1 The transport mesh belt 2 is an annular mesh belt, which is supported and driven by wheel bodies 4 arranged at both ends of the annular mesh belt. The wheel bodies 4 are rotatably installed in the mesh belt box 3. One of the wheel bodies 4 serves as a driving wheel and is driven by a motor, and the other wheel body 4 serves as a driven wheel to assist the transmission of the transport mesh belt 2.

[0056] Please continue to see the attached Figure 1 A support member 5 is provided at the section of the conveyor mesh belt 2 for receiving materials, that is, a support member 5 is installed in the inner ring of the conveyor mesh belt 2, and the support member 5 is in contact with the upper end of the conveyor mesh belt 2 to form support for the upper end of the conveyor mesh belt 2, and the support member 5 extends along the conveyor mesh belt 2.

[0057] Please see attached Figure 4 The support member 5 is a grid structure, which is a steel member, and the steel member is an oblique flat steel or round steel, which can better disperse the drag of the transport mesh belt 2;

[0058] Please continue to see the attached Figure 1 The combined drying system also includes an air outlet box 6, which is a box body arranged inside the annular transport mesh belt 2. Figure 5 It can be known from the shape of the air outlet box 6 that the air outlet box 6 extends along the transport mesh belt 2 and is divided into four areas by the first wind shield 61 in the direction of its extension. The four areas correspond to the open end of the drying tower 1 and the three drying sections a1, a2, and a3. One end of the first wind shield 61 is connected to the air outlet box 6, and the other end forms a gap with the air outlet box 6 for the air to pass through.

[0059] Please continue to see the attached Figure 5 The upper end of the air outlet box 6 is closed by the support member 5, so that the wind can enter the air outlet box 6 through the support member 5, stay in the air outlet box 6 and dry the material.

[0060] Please continue to see the attached Figure 1 The mesh belt box 2 is provided with air inlets 33 and air outlets 62 at positions corresponding to the three drying sections a1, a2, and a3. There are three air inlets 33, which correspond to the three drying sections a1, a2, and a3 respectively, and the air inlets 33 are opened on the mesh belt box 3. There are four air outlets 62, which correspond to the open end of the drying tower 1 and the three drying sections a1, a2, and a3 respectively, and the air outlets 62 are opened on the air outlet box 6.

[0061] Please continue to see the attached Figure 1 Three second wind shields 34 are also arranged between the three air inlets 33. The three second wind shields 34 separate the three air inlets 33, thereby preventing the air bodies from moving against each other to a certain extent.

[0062] Please continue to see the attached Figure 1 A space for materials to pass through is reserved between the three second wind deflectors 34 and the transport mesh belt 2 .

[0063] Please continue to see the attached Figure 1 The combined drying system further comprises a cyclone dust collector 7 , and the four air outlets 62 are all connected to the input end of the cyclone dust collector 7 .

[0064] Please continue to see the attached Figure 1 The combined drying system further comprises a bag dust collector 8 , and the wind body output end 71 of the cyclone dust collector 7 is connected to the input end of the bag dust collector 8 .

[0065] Please continue to see the attached Figure 1 The powder output end 72 of the cyclone dust collector 7 and the powder output end 81 of the bag dust collector 8 are both connected to the liquid inlet end of the drying tower 1 through the powder return pipe 9.

[0066] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0067] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A spray mesh belt combined drying system, characterized in that: It includes a drying tower and a conveyor mesh belt. One end of the drying tower is used for the entry of materials and hot air, and the other end is open and corresponds to the conveyor mesh belt. The drying tower tends to expand from top to bottom, so that the materials dried by the drying tower can fall on the conveyor mesh belt. The conveyor mesh belt is divided into several drying sections in the transmission direction, and hot air or cold air can be introduced into each drying section to dry the materials.

2. A spray mesh belt type combined drying system according to claim 1, characterized in that: It comprises a mesh belt box body, the transport mesh belt is placed in the mesh belt box body, and a docking port is formed on the mesh belt box body, and the docking port is connected with the open end of the drying tower.

3. A spray mesh belt type combined drying system according to claim 2, characterized in that: The docking interface is provided with a material blocking plate extending from the open end of the drying tower into the mesh belt box.

4. A spray mesh belt type combined drying system according to any one of claims 1 to 3, characterized in that: The transport mesh belt is an annular mesh belt, which is supported and driven by wheels arranged at both ends of the annular mesh belt.

5. A spray mesh belt type combined drying system according to any one of claims 1 to 3, characterized in that: The sections of the transport mesh belt used for receiving materials are provided with support members.

6. A spray mesh belt type combined drying system according to claim 5, characterized in that: The support member extends along the transport mesh belt, and the support member is one or more of a grid structure, a woven structure, and a punching structure.

7. A spray mesh belt type combined drying system according to claim 2 or 3, characterized in that: The mesh belt box is provided with an air inlet and an air outlet at a position corresponding to each drying section.

8. The spray mesh belt type combined drying system according to claim 7, characterized in that: It also includes a cyclone dust collector, and each of the air outlets is connected to an input end of the cyclone dust collector.

9. A spray mesh belt type combined drying system according to claim 8, characterized in that: It also includes a bag dust collector, and the wind body output end of the cyclone dust collector is connected to the input end of the bag dust collector.

10. A spray mesh belt type combined drying system according to claim 9, characterized in that: The powder output end of the cyclone dust collector and the powder output end of the bag dust collector are both connected to the drying tower through a powder return pipe.

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