Atomizing disc capable of narrowing SPAN value and atomizer

Abstract

The atomizing disc comprises an upper disc body and a lower disc body, the center of the lower disc body is provided with a rotating main shaft penetrating through the lower disc body, and the side wall of the lower disc body is provided with a plurality of liquid outlet guide columns penetrating in the radial direction of the lower disc body; the upper disc body is fixedly connected to the lower disc body, the upper disc body and the lower disc body form a feeding cavity around the rotating main shaft, and the upper disc body and the lower disc body can rotate along with rotation of the rotating main shaft. And the atomizer is formed by connecting a rotating main shaft of the atomizing disc with the conical surface of the atomizer main body. According to the atomizing disc, due to the fact that the height difference exists between the bottom face of the feeding cavity and the discharging guide column, materials exist in the feeding cavity all the time, when the atomizing disc rotates at a high speed, the materials in the feeding cavity can be thrown into hot air through the hole channels in the liquid outlet guide column to be rapidly dried, powder with even particles is formed, and therefore the atomizing disc can be used for atomizing materials. And the particle size of the powder and the effect of narrowing the SPAN value can be achieved by adjusting parameter changes such as the number and the length of the liquid outlet guide columns, and convenience and high efficiency are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of atomization equipment, in particular to an atomization disk and an atomizer capable of narrowing a SPAN value. Background Art

[0002] Centrifugal atomization drying involves feeding a prepared suspension or emulsion into a centrifugal atomizer, where the liquid is ejected at high speed from the rotating atomizer disk, forming a mist of particles. This is then flash-evaporated to produce a solid powder. The atomizer is the core component of a centrifugal spray drying system, and the atomizer disk is its core. The disk's design directly influences the particle morphology and SPAN value after drying. Spray drying users generally desire products with a low SPAN value, so research and development of atomizer disks that can narrow the SPAN value are particularly important. Summary of the Invention

[0003] The purpose of the utility model is to provide an atomizing disk and an atomizer capable of narrowing the SPAN value in order to overcome the problem that there is no device capable of narrowing the SPAN value in the prior art.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] One of the technical solutions of the present invention is to provide an atomizing disk capable of narrowing the SPAN value, comprising:

[0006] The lower disc body has a rotating main shaft at its center that passes through the lower disc body, and a plurality of liquid outlet guide pillars that pass through the lower disc body in a radial direction are provided on the side wall;

[0007] The upper disc body is fixedly connected to the lower disc body, and the upper disc body and the lower disc body form a feeding cavity around the rotating main shaft. The upper disc body and the lower disc body can rotate with the rotation of the rotating main shaft.

[0008] In some specific embodiments, the liquid outlet guide column is in the shape of a tapered hole, and the diameter of the liquid outlet guide column located on the outer side of the lower disk body side wall is smaller than the diameter of the liquid outlet guide column located on the inner side of the lower disk body side wall.

[0009] In some specific embodiments, the taper of the liquid outlet guide column is 10°.

[0010] In some specific embodiments, the number of the liquid outlet guide columns is 3-5.

[0011] In some embodiments, the diameter of the upper disk is greater than the diameter of the lower disk.

[0012] In some specific embodiments, the diameter of the upper disc is 140 mm, and the diameter of the lower disc is 105 mm.

[0013] In some specific embodiments, the feed cavity has a diameter of 70 mm and a depth of 20 mm.

[0014] In some embodiments, the total thickness of the atomizing disk is 40 mm.

[0015] In some specific embodiments, the upper plate and the lower plate are connected and fixed by fastening screws.

[0016] A second technical solution of the present invention is to provide an atomizer, comprising the atomizer disk as described in one of the above technical solutions, wherein the rotating main shaft of the atomizer disk is connected to the atomizer body via a conical surface.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The atomizing disk provided by the utility model is connected to a plurality of discharge guide pillars on the side wall of the lower disk body by interference fit. Due to the height difference between the bottom surface of the feed cavity and the discharge guide pillars, there is always material in the feed cavity. When the atomizing disk rotates at high speed, the material in the feed cavity will be thrown into the hot air through the holes in the liquid discharge guide pillars, and will be quickly dried to form a powder with uniform particles. The particle size of the powder and the effect of narrowing the SPAN value can be achieved by adjusting the number, length and other parameters of the liquid discharge guide pillars, which is simple, convenient and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the present utility model.

[0020] The following are marked in the figure:

[0021] 1 is the upper disc body, 2 is the liquid outlet guide column, 3 is the lower disc body, 4 is the rotating spindle, 5 is the feed chamber, and 6 is the fastening screw. DETAILED DESCRIPTION

[0022] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0024] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0025] In the following embodiments, unless otherwise specified, functional components or structures are conventional components or structures used in the art to achieve corresponding functions.

[0026] Example 1:

[0027] This embodiment provides an atomizer disk capable of narrowing the SPAN value, comprising an upper disk body 1 and a lower disk body 3. Specifically, a rotating spindle 4 is provided at the center of the lower disk body 3, extending therethrough. Several liquid outlet guide posts 2 are radially extending therethrough on the sidewalls. The liquid outlet guide posts 2 are installed with the lower disk body 3 in an interference fit. The upper disk body 1 is fixedly connected to the lower disk body 3, and together with the lower disk body 3, a feed chamber 5 is formed around the rotating spindle 4. The upper disk body 1 and the lower disk body 3 can rotate with the rotation of the rotating spindle 4.

[0028] The liquid outlet guide post 2 is tapered, with the diameter of the opening on the outside of the lower disc 3 being smaller than the diameter on the inside. The length of the liquid outlet guide post 2 affects the size of the dried particles. The taper of the liquid outlet guide post 2 can be selected based on the product's particle size requirements. For example, the taper of the liquid outlet guide post 2 can be 10°. The number of liquid outlet guide posts 2 also affects the SPAN value. The number of liquid outlet guide posts 2 can be selected based on the product's particle size requirements. Generally, the number of liquid outlet guide posts 2 can be 3-5. To ensure the stability of the atomizer disk, a design with a larger top and smaller bottom is adopted. That is, the diameter of the upper disc 1 is larger than that of the lower disc 3. For example, the diameter of the upper disc 1 is 140 mm, and the diameter of the lower disc 3 is 105 mm. Other dimensional relationships of the atomizer disk include: the feed chamber 5 has a diameter of 70 mm and a depth of 20 mm. The total thickness of the atomizer disk is 40 mm.

[0029] The upper plate 1 and the lower plate 3 are both made of titanium alloy with an overall roughness requirement of 1.6. The two are connected and fixed by fastening screws 6.

[0030] When the atomizer disk provided in this embodiment is in operation, it is driven by a high-speed motor to rotate at high speed. At the same time, the configured material enters the feed pipeline of the atomizer through the feed system and is further transported to the feed hole of the liquid distribution disk. The material enters the feed chamber of the atomizer evenly through the liquid distribution disk. Due to the height difference between the bottom surface of the feed chamber 5 and the discharge guide column 2, there is always material in the feed chamber 5. When the atomizer disk rotates at high speed, the material in the feed chamber 5 is thrown into the hot air through the hole in the discharge guide column 2 and is quickly dried to form a powder with uniform particles. The atomizer disk can operate stably for a long time at high speed and can optimize the particle size and narrow the SPAN value by changing the parameters (number and length) of the liquid discharge guide column. The material to be dried is flash evaporated in a hot air temperature environment to obtain a solid powder, achieving the purpose of converting the liquid slurry into a powder of the desired particle size. In actual use, the SPAN value of the product produced by centrifugal spraying using the atomizer disk is significantly narrower than the SPAN value of products produced using other types of atomizer disks.

[0031] Example 2:

[0032] This embodiment provides an atomizer, which includes the atomizer disk as described in Example 1. The rotating main shaft 4 of the atomizer disk is connected to the atomizer body via a conical surface and is fixed with a nut, the screw thread direction of which is opposite to the rotation direction of the atomizer disk.

[0033] To facilitate disassembly, a thin layer of molybdenum disulfide grease can be applied to the mounting surface of the rotating spindle 4 of the atomizing disk before installation. Special tools should be used during disassembly to prevent deformation of the rotating spindle 4.

[0034] After the installation is completed, the dynamic balance test is carried out on the whole, and the dynamic balance can be made to meet the relevant requirements by metal cutting.

[0035] The above description of the embodiments is intended to facilitate understanding and use of the utility model by those skilled in the art. Those skilled in the art will readily be able to make various modifications to these embodiments and apply the general principles described herein to other embodiments without requiring inventive effort. Therefore, the utility model is not limited to the above-described embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of this utility model without departing from the scope of this utility model should be within the scope of protection of this utility model.

Claims

1. An atomizing disk capable of narrowing the SPAN value, characterized in that: include: The lower disc body (3) has a rotating main shaft (4) penetrating the lower disc body (3) at its center, and a plurality of liquid outlet guide columns (2) penetrating along its radial direction are provided on its side wall; An upper disc body (1) is fixedly connected to the lower disc body (3), and together with the lower disc body (3), a feed chamber (5) is formed around the rotating main shaft (4). The upper disc body (1) and the lower disc body (3) can rotate along with the rotation of the rotating main shaft (4).

2. The atomizer disk capable of narrowing the SPAN value according to claim 1, characterized in that: The liquid outlet guide column (2) is in the shape of a tapered hole, and the diameter of the liquid outlet guide column located on the outer side of the side wall of the lower disk body (3) is smaller than the diameter of the liquid outlet guide column located on the inner side of the side wall of the lower disk body (3).

3. The atomizer disk capable of narrowing the SPAN value according to claim 2, characterized in that: The taper of the liquid outlet guide column (2) is 10°.

4. The atomizer disk capable of narrowing the SPAN value according to claim 1, characterized in that: The number of the liquid outlet guide columns (2) is 3-5.

5. The atomizer disk capable of narrowing the SPAN value according to claim 1, characterized in that: The diameter of the upper disc body (1) is greater than the diameter of the lower disc body (3).

6. The atomizer disk capable of narrowing the SPAN value according to claim 5, characterized in that: The diameter of the upper disc (1) is 140 mm, and the diameter of the lower disc (3) is 105 mm.

7. The atomizer disk capable of narrowing the SPAN value according to claim 6, characterized in that: The feed cavity (5) has a diameter of 70 mm and a depth of 20 mm.

8. The atomizer disk capable of narrowing the SPAN value according to claim 7, characterized in that: The total thickness of the atomizing disk is 40 mm.

9. The atomizer disk capable of narrowing the SPAN value according to claim 1, characterized in that: The upper disc body (1) and the lower disc body (3) are connected and fixed by fastening screws (6).

10. An atomizer, characterized in that: The atomizing disk comprises the atomizing disk as claimed in any one of claims 1 to 9, wherein the rotating main shaft (4) of the atomizing disk is connected to the atomizer body via a conical surface.

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