Multi-stage material separating, screening and collecting device

Abstract

The utility model relates to the technical field of spray dryer equipment, in particular to a multi-stage material separating, screening and collecting device which comprises a material receiving barrel arranged on the lower portion of a spray dryer, a first material receiving pipe is arranged on the upper portion of the material receiving barrel, and a second material receiving pipe is arranged on the lower portion of the material receiving barrel. The screening mechanism used for screening materials is arranged in the middle of the material receiving barrel, the materials are screened in the material receiving barrel through the screening mechanism, and then the materials are conveyed and stored in a grading mode through the first material receiving opening and the second material receiving opening. According to the drying device, the materials can be directly subjected to grading treatment after drying is completed, the transfer process is reduced, the operation efficiency is improved, meanwhile, contact between the materials and the outside world can be reduced, and the purity of the materials is kept.

Description

Technical Field

[0001] This utility model relates to the technical field of spray dryer equipment, specifically to a multi-stage screening and collecting device for spray dryers. Background Technology

[0002] Spray drying technology, as a highly efficient and continuous drying method, is widely used in the drying of various liquid materials. However, after drying, traditional spray dryers usually require a transfer step to screen the material to separate particles of different sizes. This not only increases the complexity of the production process but may also lead to contamination or loss of materials during transfer.

[0003] Existing spray dryers, such as the Chinese patent (application number: 202222564846.0), disclose a spray dryer with a grading function, comprising: a dryer body, a support plate installed on the surface of the dryer body, two vertical plates installed on the left and right sides of the bottom of the support plate, a mounting plate installed at the bottom of the two vertical plates, and a grading and screening mechanism located on top of the mounting plate. The grading and screening mechanism includes a movable shell and a connecting plate, with the movable shell located on top of the mounting plate. This invention achieves grading and screening through the cooperation of the movable shell, screen, top block, connecting plate, servo motor, protrusion, moving block, fixed rod, movable plate, and spring, thus ensuring that materials of different sizes are screened out, improving the screening effect. Furthermore, the screen can be disassembled and replaced as needed, facilitating the replacement of screens with different aperture sizes, thus improving applicability.

[0004] Although the equipment has the function of screening after drying, the material collection process is not disclosed, and the screened material still needs to be transferred for transportation and collection, which cannot effectively improve production efficiency. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a multi-stage material sorting and collection device capable of directly sieving materials after drying.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a multi-stage material sorting and collecting device, comprising a receiving cylinder disposed at the lower part of a spray dryer, a first receiving pipe disposed at the upper part of the receiving cylinder, a second receiving pipe disposed at the lower part of the receiving cylinder, and a screening mechanism for screening materials disposed in the middle part of the receiving cylinder.

[0007] As a further improvement to the above technical solution:

[0008] The screening mechanism includes a screen plate disposed below the first receiving pipe, and a vibrating block is disposed on the screen plate.

[0009] The sieve plate is inclined and extends outward from the end closest to the first receiving pipe, with the horizontal height gradually increasing.

[0010] The screen plate is surrounded by a support frame that is connected to the inner wall of the receiving cylinder. A drive shaft that passes through the vibrating block is provided on the support frame. One end of the drive shaft extends to the outside of the receiving cylinder and is provided with a drive source.

[0011] The feed end of the first receiving pipe is equipped with a screen, and a material drop gap is provided between the end of the support frame facing the first receiving pipe and the side wall of the receiving cylinder.

[0012] A baffle plate is provided above the first receiving pipe. One end of the baffle plate is connected to the inner wall of the receiving cylinder, and the other end extends to the top of the screen plate.

[0013] The beneficial effects of this utility model embodiment are as follows: The multi-stage material sorting and collecting device includes a receiving cylinder located at the bottom of the spray dryer. A first receiving pipe is provided at the upper part of the receiving cylinder, and a second receiving pipe is provided at the lower part of the receiving cylinder. A screening mechanism for screening materials is provided in the middle of the receiving cylinder. The materials are screened by the screening mechanism in the receiving cylinder, and then graded and collected through the first and second receiving ports. Compared with the existing traditional method of collecting materials and then screening them, this method can directly grade the materials after drying, reduce the transfer process, improve work efficiency, and also reduce the contact between the materials and the outside world, maintaining the purity of the materials. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0015] Figure 2 This is a cross-sectional view of Example 1;

[0016] Figure 3 This is a schematic diagram of the sieve plate in Example 1;

[0017] Figure 4 This is a schematic diagram of the installation structure of the conveying channel in Example 2.

[0018] In the diagram: 1. Spray dryer; 2. Receiving cylinder; 3. First receiving pipe; 4. Second receiving pipe; 5. Screen plate; 6. Vibrating block; 7. Support frame; 8. Drive shaft; 9. Drive source; 10. Screen; 11. Material drop gap; 12. Baffle plate; 13. Conveying channel. Detailed Implementation

[0019] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0020] like Figure 1-3 As shown, the multi-stage material sorting and collecting device of this embodiment includes a receiving cylinder 2 installed at the lower part of the spray dryer 1. A first receiving pipe 3 is provided at the upper part of the receiving cylinder 2, and a second receiving pipe 4 is provided at the lower part of the receiving cylinder 2. A screening mechanism for screening materials is provided in the middle of the receiving cylinder 2. The material dried by the spray dryer 1 is transferred through the receiving cylinder 2. The material is screened by the screening mechanism in the receiving cylinder 2. Then, the material is graded and collected through the first receiving port 3 and the second receiving port 4. Compared with the existing traditional method of collecting material and then screening it, this method can directly grade the material after drying, reduce the transfer process, improve the operation efficiency, and at the same time reduce the contact between the material and the outside world, maintaining the purity of the material.

[0021] The screening mechanism includes a screen plate 5 located below the first receiving pipe 3. The screen plate 5 is equipped with a vibrating block 6, which is a cam. After the vibrating block 6 rotates and strikes the screen plate 5, the material falling on the screen plate 5 vibrates, which can improve the screening efficiency.

[0022] The screen plate 5 is inclined and extends outward from the end closest to the first receiving pipe 3, with the horizontal height gradually increasing. The inclination angle of the screen plate 5 is 1-3 degrees, which can improve screening efficiency without the problem of material rolling down too fast, thus reducing screening accuracy.

[0023] The screen plate 5 is provided with a support frame 7 around its perimeter, which is connected to the inner wall of the receiving cylinder 2. The lower part of the support frame 7 has a drive shaft 8 that passes through the vibrating block 6. One end of the drive shaft 8 extends to the outside of the receiving cylinder 2 and is provided with a drive source 9. The drive source 9 is a drive motor, which drives the vibrating block 6 to rotate and strike the screen plate 5 to perform screening operations.

[0024] The feed end of the first receiving pipe 3 is equipped with a screen 10. The end of the support frame 7 facing the first receiving pipe 3 is provided with a material drop gap 11 between it and the side wall of the receiving cylinder 2. The mesh number of the screen 10 is the same as that of the screen plate 5. When a large material is accidentally sucked in by the first screening pipe 3, it will be intercepted by the screen 10. The intercepted material will fall through the material drop gap 11 and be drawn away by the second receiving pipe 4.

[0025] A baffle plate 12 is provided above the first receiving pipe 3. One end of the baffle plate 12 is connected to the inner wall of the receiving cylinder 2, and the other end extends to the top of the screen plate 5. The design of the baffle plate 12 can prevent the material from falling directly into the first receiving pipe 3 when it falls.

[0026] The working principle / assembly process of this solution: After the material is dried, it falls into the receiving cylinder 2 and then continues to fall onto the baffle plate 12. It rolls along the baffle plate 12 onto the screen plate 5 for screening. Fine particles and impurities fall after passing through the screen plate 5 and are then extracted through the second receiving pipe 4. Materials with the required diameter continue to slide down with the vibration of the screen plate 5 and are screened again through the screen 10. Materials with the required particle size are extracted by the first receiving pipe 3. Materials with a larger volume but lighter weight are blocked by the screen 10. In actual operation, in order to further improve the screening accuracy, a conveying channel 13 is connected below the material drop gap to separate and convey unqualified materials with larger particle size after screening by the screen plate 5 and unqualified materials with a larger volume but lighter weight intercepted by the screen 10 from fine particles and impurities for subsequent processing.

[0027] Example 2

[0028] The similarities to Example 1 will not be repeated here, the differences being: Figure 4 As shown, the conveying channel 13 is located outside the receiving cylinder 2, and its upper end is connected to the first receiving pipe 3. The first receiving pipe 3 is equipped with a screen 10 located on the right side of the conveying channel 13. A vibrator is installed on the screen 10. Placing the conveying channel 13 outside can independently recover materials with larger volume and smaller mass, further improving the screening and recovery efficiency of materials.

[0029] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.

[0031] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0032] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A multi-stage material separation and collection device, comprising a receiving cylinder (2) disposed at the lower part of a spray dryer (1), characterized in that: The upper part of the receiving cylinder (2) is provided with a first receiving pipe (3), the lower part of the receiving cylinder (2) is provided with a second receiving pipe (4), and the middle part of the receiving cylinder (2) is provided with a screening mechanism for screening materials.

2. The multi-stage material separation, screening, and collection device according to claim 1, characterized in that: The screening mechanism includes a screen plate (5) disposed below the first receiving pipe (3), and a vibrating block (6) is disposed on the screen plate (5).

3. The multi-stage material separation, screening, and collection device according to claim 2, characterized in that: The sieve plate (5) is inclined and extends outward from the end near the first receiving pipe (3), with the horizontal height gradually increasing.

4. The multi-stage material separation, screening, and collection device according to claim 2, characterized in that: The screen plate (5) is provided with a support frame (7) connected to the inner wall of the receiving cylinder (2) around its perimeter. The support frame (7) is provided with a drive shaft (8) that passes through the vibrating block (6). One end of the drive shaft (8) extends to the outside of the receiving cylinder (2) and is provided with a drive source (9).

5. The multi-stage material separation, screening, and collection device according to claim 4, characterized in that: The feed end of the first receiving pipe (3) is provided with a screen (10), and a material drop gap (11) is provided between the end of the support frame (7) facing the first receiving pipe (3) and the side wall of the receiving cylinder (2).

6. The multi-stage material separation, screening, and collection device according to claim 5, characterized in that: A baffle plate (12) is provided above the first receiving pipe (3). One end of the baffle plate (12) is connected to the inner wall of the receiving cylinder (2), and the other end extends to the top of the screen plate (5).

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