Spray drying device capable of removing fine powder

Abstract

The utility model relates to the technical field of spray drying, in particular to a spray drying device capable of removing fine powder. According to the technical scheme, the spray dryer comprises a spray dryer body and a filter box, an exhaust pipe is fixedly connected to one side of the upper surface of the spray dryer body, the tail end of the exhaust pipe is fixedly connected to one side of the lower surface of the filter box, and a sealing plate is fixedly installed on the upper surface of the filter box; a connecting pipe is fixedly connected to the position, located above the exhaust pipe, of the upper surface of the sealing plate, a rotating motor is fixedly installed at the axis position of the upper surface of the sealing plate, a filter screen disc is fixed to the tail end of an output shaft of the rotating motor, and a scraping plate is arranged at the position, located below the filter screen disc, of the side, away from the exhaust pipe, in the filter box. In the using process of the spray dryer, fine powder products in discharged dry hot air are filtered out and collected, material waste and environmental pollution are avoided, meanwhile, the filter screen can be prevented from being blocked, and the efficient filtering performance of the filter screen is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of spray drying, in particular to a spray drying device capable of removing fine powder. Background Art

[0002] Spray drying is a drying method that processes solutions, emulsions, suspensions or pastes into powdered or granular dry products. This method uses an atomizer to spray the liquid into extremely fine mist droplets. The drying medium (such as hot air, flue gas or inert gas) is evenly mixed with the mist droplets to exchange energy and vaporize the water (or solvent) to obtain the dried product. This method eliminates the tedious steps of evaporation and crushing and is suitable for many industries such as food, pharmaceuticals, and chemicals. It can improve product production efficiency and ensure the stability of product quality.

[0003] During the use of the current spray drying device, some of the fine powdered product produced after spray drying will be discharged from the inside of the spray dryer along with the drying hot air, which not only causes material waste but also has an impact on the environment. Therefore, we propose a spray drying device that can remove fine powder. Utility Model Content

[0004] The purpose of the utility model is to provide a spray drying device capable of removing fine powder, which has the advantages of filtering out and collecting fine powder products in the dry hot air discharged from the spray dryer during use, thereby avoiding material waste and environmental pollution, and also preventing filter clogging, thereby ensuring the high efficiency of the filter performance. It solves the problem that in the current spray drying device, part of the fine powder products produced after spray drying will be discharged from the inside of the spray dryer along with the dry hot air during use, which not only causes material waste but also has an impact on the environment.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a spray drying device capable of removing fine powder, comprising a spray dryer body and a filter box, wherein an exhaust pipe is fixedly connected to one side of the upper surface of the spray dryer body, and an end of the exhaust pipe is fixedly connected to one side of the lower surface of the filter box, a sealing plate is fixedly installed on the upper surface of the filter box, a connecting pipe is fixedly connected to the upper surface of the sealing plate at a position above the exhaust pipe, a rotating motor is fixedly installed at an axial position of the upper surface of the sealing plate, a filter disc is fixed to the end of the output shaft of the rotating motor, a scraper is provided on the side of the filter box facing away from the exhaust pipe at a position below the filter disc, and a discharge valve is fixedly connected to the side of the lower surface of the filter box facing away from the exhaust pipe.

[0006] Preferably, the sealing plate and the filter box are fixedly connected by bolts.

[0007] Preferably, limiting rings are fixedly installed on the lower surface of the sealing plate and the inner wall of the filter box near the upper surface, and the filter disc is located between the two limiting rings.

[0008] Preferably, the bottom of the inner wall of the filter box is fixedly connected to an elastic telescopic rod at a position below the scraper, and the end of the elastic telescopic rod is fixedly connected to the lower surface of the scraper.

[0009] Preferably, the end of the discharge valve is fixedly connected to a transparent tube, and the end of the transparent tube is fixedly connected to a discharge valve.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0011] 1. The utility model achieves the effect of filtering and collecting fine powder products in the dry hot air discharged from the spray dryer during use by arranging a spray dryer body, a filter box, a filter disc, a rotating motor, a scraper and a discharge valve, thereby avoiding material waste and environmental pollution, and also avoiding filter clogging, ensuring the filter's efficient filtering performance. The spray-dried hot air generated by the spray dryer body when it is in operation is discharged from the exhaust pipe and enters the filter box, and the fine powder products in the hot air are filtered out by the filter disc. The rotating motor drives the filter disc to rotate, and the scraper scrapes off the fine powder products adhering to the filter disc to avoid filter disc clogging. The collected fine powder products are discharged through the discharge valve and reused, and the hot air after the fine powder products are removed is discharged through the connecting pipe.

[0012] 2. The utility model provides an elastic telescopic rod. After the scraper is worn, the elastic force of the elastic telescopic rod can keep the scraper in contact with the lower surface of the filter disc, ensuring that the scraper can always scrape off the fine powder product adhering to the filter disc.

[0013] 3. The utility model provides a limiting ring, which can limit the rotating filter disc and improve the stability of the filter disc during rotation.

[0014] 4. The utility model achieves the effect of facilitating the discharge of the fine powder product collected inside the filter box by arranging a transparent tube and a discharge pipe. When the discharge valve is opened, the fine powder product filtered by the filter disc passes through the discharge valve and is collected in the transparent tube. When the fine powder product in the transparent tube needs to be discharged, the discharge valve is closed and then opened. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 3This is a schematic diagram of the partial main cross-sectional structure of the filter box of the utility model;

[0018] Figure 4 For this utility model Figure 3 Schematic diagram of the enlarged structure of A in the figure.

[0019] Figure numerals: 1. spray dryer body; 2. connecting pipe; 3. rotating motor; 4. sealing plate; 5. filter box; 6. exhaust pipe; 7. discharge valve; 8. transparent tube; 9. unloading valve; 10. filter plate; 11. scraper; 12. elastic telescopic rod; 13. limiting ring. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described below with reference to the accompanying drawings and specific embodiments.

[0021] Example 1

[0022] like Figures 1-4 As shown, the utility model proposes a spray drying device for removing fine powder, including a spray dryer body 1 and a filter box 5. An exhaust pipe 6 is fixedly connected to one side of the upper surface of the spray dryer body 1. Dry hot air and atomized droplets meet inside the spray dryer body 1, and the atomized droplets are dried, and the hot air after spray drying is discharged from the exhaust pipe 6. The end of the exhaust pipe 6 is fixedly connected to one side of the lower surface of the filter box 5. A sealing plate 4 is fixedly installed on the upper surface of the filter box 5. The sealing plate 4 and the filter box 5 are fixedly connected by bolts. The upper surface of the sealing plate 4 is located above the exhaust pipe 6 and is fixedly connected to a connecting plate. Take over 2, a rotating motor 3 is fixedly installed at the axial position of the upper surface of the sealing plate 4, and a filter disc 10 is fixed to the end of the output shaft of the rotating motor 3. Limiting rings 13 are fixedly installed on the lower surface of the sealing plate 4 and the inner wall of the filter box 5 near the upper surface, and the filter disc 10 is located between the two limiting rings 13. The limiting ring 13 limits the rotating filter disc 10, thereby improving the stability of the filter disc 10 during rotation. A scraper 11 is provided on the side of the filter box 5 facing away from the exhaust pipe 6 at a position below the filter disc 10, and a discharge valve 7 is fixedly connected to the side of the lower surface of the filter box 5 facing away from the exhaust pipe 6.

[0023] When the present invention is in use, dry hot air meets atomized droplets inside the spray dryer body 1, and the atomized droplets are dried. The hot air after spray drying is discharged from the exhaust pipe 6 and enters the filter box 5. The fine powder product in the hot air is filtered out through the filter plate 10. The rotating motor 3 drives the filter plate 10 to rotate, and the scraper 11 scrapes off the fine powder product adhering to the filter plate 10 to avoid clogging of the filter plate 10. The collected fine powder product is discharged through the discharge valve 7 and reused. The hot air after removing the fine powder product is discharged through the connecting pipe 2.

[0024] Example 2

[0025] like Figure 2 and Figure 3 As shown, the utility model proposes a spray drying device capable of removing fine powder. Compared with the first embodiment, this embodiment also includes an elastic telescopic rod 12 fixedly connected to the bottom of the inner wall of the filter box 5 at a position below the scraper 11, and the end of the elastic telescopic rod 12 is fixedly connected to the lower surface of the scraper 11.

[0026] In this embodiment, after the scraper 11 is worn, the elastic force of the elastic telescopic rod 12 can keep the scraper 11 in contact with the lower surface of the filter plate 10, ensuring that the scraper 11 can always scrape off the fine powder product adhering to the filter plate 10.

[0027] Example 3

[0028] like Figure 2 and Figure 3 As shown, the present invention proposes a spray drying device capable of removing fine powder. Compared with the first embodiment, this embodiment further includes a transparent tube 8 fixedly connected to the end of the discharge valve 7, and a discharge valve 9 fixedly connected to the end of the transparent tube 8.

[0029] In this embodiment, when the discharge valve 7 is opened, the fine powder product filtered by the filter disc 10 passes through the discharge valve 7 and is collected in the transparent tube 8. When the fine powder product in the transparent tube 8 needs to be discharged, the discharge valve 7 is closed and the discharge valve 9 is opened, which facilitates the discharge of the fine powder product collected inside the filter box 5.

[0030] The above specific embodiments are only several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A spray drying device capable of removing fine powder, comprising a spray drying machine body (1) and a filter box (5), characterized in that: An exhaust pipe (6) is fixedly connected to one side of the upper surface of the spray dryer body (1), and the end of the exhaust pipe (6) is fixedly connected to one side of the lower surface of the filter box (5). A sealing plate (4) is fixedly installed on the upper surface of the filter box (5), and a connecting pipe (2) is fixedly connected to the upper surface of the sealing plate (4) at a position above the exhaust pipe (6). A rotating motor (3) is fixedly installed at the axial position of the upper surface of the sealing plate (4), and a filter disc (10) is fixed to the end of the output shaft of the rotating motor (3). A scraper (11) is provided at a position below the filter disc (10) on the side of the filter box (5) facing away from the exhaust pipe (6). A discharge valve (7) is fixedly connected to the side of the lower surface of the filter box (5) facing away from the exhaust pipe (6).

2. The spray drying device capable of removing fine powder according to claim 1, characterized in that: The sealing plate (4) and the filter box (5) are fixedly connected by bolts.

3. The spray drying device capable of removing fine powder according to claim 1, characterized in that: Limiting rings (13) are fixedly installed on the lower surface of the sealing plate (4) and the inner wall of the filter box (5) near the upper surface, and the filter disc (10) is located between the two limiting rings (13).

4. The spray drying device capable of removing fine powder according to claim 1, characterized in that: The bottom of the inner wall of the filter box (5) is located below the scraper (11) and is fixedly connected to an elastic telescopic rod (12), and the end of the elastic telescopic rod (12) is fixedly connected to the lower surface of the scraper (11).

5. The spray drying device capable of removing fine powder according to claim 1, characterized in that: The end of the discharge valve (7) is fixedly connected to a transparent tube (8), and the end of the transparent tube (8) is fixedly connected to a discharge valve (9).

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