Powder-accumulation-preventing hot air distributor for spray drying tower

Abstract

The utility model discloses a kind of powder-accumulation-preventing hot air distributors for spray drying tower, it is related to hot air distributor field, including gradually expanding flow channel, gradually expanding flow channel top is provided with access hole, access hole is fixedly connected with overhaul structure, gradually expanding flow channel bottom is installed with backflush structure.The whole application has adopted the design of gradually expanding flow channel, while internally installed with two groups of guide vanes, so that hot air can be more evenly distributed in spray drying tower, improve the drying uniformity of material, ensure the stability of product quality;Airflow backflush of backflush structure and two groups of vibration motor can automatically remove the powder that has been attached, solve the problem that traditional hot air distributor is easy to accumulate powder;Gradually expanding flow channel makes hot air and material can be fully contacted, improve heat exchange efficiency, thereby significantly improve the spray drying efficiency, shorten drying time, reduce energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of hot air distributors, specifically a powder-resistant hot air distributor for spray drying towers. Background Technology

[0002] In feed production and processing, spray drying is a commonly used drying technology to convert liquid feed ingredients into powdered products. The hot air distributor, as a key component of the spray drying tower, directly affects drying efficiency and product quality.

[0003] Traditional hot air distributors have several problems, such as uneven hot air distribution leading to inconsistent material drying, with some materials being over-dried while others are under-dried. This affects the uniformity and quality stability of the product. Furthermore, during the drying process, powder tends to accumulate on the inner wall of the hot air distributor, forming dust deposits. These dust deposits not only reduce the heat exchange efficiency of the distributor and increase energy consumption, but may also breed bacteria, contaminating feed products and threatening their safety and quality. Therefore, there is an urgent need for a hot air distributor that can reduce dust accumulation. Utility Model Content

[0004] To achieve the above objectives, this utility model provides the following technical solution: a powder-resistant hot air distributor for a spray drying tower, comprising a gradually expanding flow channel, an inspection port at the top of the gradually expanding flow channel, an inspection structure fixedly connected inside the inspection port, and a back-blowing structure installed at the bottom of the gradually expanding flow channel, the back-blowing structure comprising a vibration motor, the vibration motor comprising two sets and symmetrically fixed on both sides of the gradually expanding flow channel.

[0005] Preferably, the gradually expanding flow channel includes a flow channel body, which is a hollow tubular structure that is wider at the front and narrower at the back. A rear flange is fixedly connected to the rear end of the flow channel body, and a front flange is fixedly connected to the front end of the flow channel body. A first rotating shaft is fixedly connected to the inner wall of the rear end of the flow channel body. Several sets of the first rotating shaft are evenly distributed on the inner wall of the rear end of the flow channel body, and an arc-shaped guide plate is rotatably connected to the surface of each set of the first rotating shaft.

[0006] Preferably, a second rotating shaft is fixedly connected to the inner wall of the middle section of the flow channel body. The second rotating shaft is provided in several groups and is evenly distributed on the inner wall of the middle section of the flow channel body. A flat guide plate is rotatably connected to the surface of each group of second rotating shafts.

[0007] Preferably, the maintenance structure includes an extension tube, the top end of which is rotatably connected to a sealing cover plate via a rotating shaft, and the extension tube is inserted and fixed into the maintenance port opened at the top end of the gradually expanding flow channel.

[0008] Preferably, the backflush structure further includes an air blowing pipe, which is L-shaped. One end of the air blowing pipe is fitted with a sealing ring, and the other end of the air blowing pipe passes through the gradually expanding flow channel and is inserted and fixed inside the gradually expanding flow channel. The other end of the air blowing pipe is fixedly connected to a threaded connector.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] This utility model proposes an anti-powder-accumulation hot air distributor for spray drying towers, which has the following advantages: 1. Uniform hot air distribution: The overall design adopts a gradually expanding flow channel, and two sets of guide plates are installed inside, which makes the hot air distribution in the spray drying tower more uniform, improving the drying uniformity of the material and ensuring the stability of product quality; 2. Effectively prevents powder accumulation: The back-blowing structure and two sets of vibration motors can automatically remove the powder that has been attached, solving the problem of easy powder accumulation in traditional hot air distributors; 3. Improved drying efficiency: The gradually expanding flow channel allows the hot air to fully contact the material, improving the heat exchange efficiency, thereby significantly improving the spray drying efficiency, shortening the drying time, and reducing energy consumption; 4. Reduced production costs: The back-blowing structure realizes automatic removal of accumulated powder, eliminating the need for manual shutdown for cleaning, reducing production interruption time, and lowering labor and equipment maintenance costs. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings:

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 For the present utility model Figure 1 Another structural diagram from another perspective;

[0014] Figure 3 For the present utility model Figure 1 A cross-sectional schematic diagram.

[0015] As shown in the figure: 1. Gradually expanding flow channel; 11. Flow channel body; 12. Rear flange; 13. Front flange; 14. Arc-shaped guide plate; 15. Flat guide plate; 2. Maintenance structure; 21. Extension pipe; 22. Sealing cover plate; 3. Backflush structure; 31. Vibration motor; 32. Air blowing pipe; 33. Sealing ring; 34. Threaded connector. Detailed Implementation

[0016] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0017] Please see Figures 1 to 3This utility model provides a powder-resistant hot air distributor for a spray drying tower, including a gradually expanding flow channel 1. The top of the gradually expanding flow channel 1 is provided with an inspection port, and an inspection structure 2 is fixedly connected inside the inspection port. A back-blowing structure 3 is installed at the bottom of the gradually expanding flow channel 1. The back-blowing structure 3 includes a vibration motor 31. Two sets of vibration motors 31 are provided and symmetrically fixed on both sides of the gradually expanding flow channel 1.

[0018] The gradually expanding flow channel 1 includes a flow channel body 11, which is a hollow tubular structure that is wider at the front and narrower at the back. A rear flange 12 is fixedly connected to the rear end of the flow channel body 11, a front flange 13 is fixedly connected to the front end of the flow channel body 11, and a first rotating shaft is fixedly connected to the inner wall of the rear end of the flow channel body 11. The first rotating shaft is provided in several groups and is evenly distributed on the inner wall of the rear end of the flow channel body 11. An arc-shaped guide plate 14 is rotatably connected to the surface of each group of first rotating shafts.

[0019] A second rotating shaft is fixedly connected to the inner wall of the middle section of the main body 11 of the flow channel. Several sets of the second rotating shaft are evenly arranged on the inner wall of the middle section of the main body 11 of the flow channel. A flat guide plate 15 is rotatably connected to the surface of each set of the second rotating shaft.

[0020] In use, the rear flange 12 is bolted to the outlet of the hot air blower, and the front flange 13 is bolted to the spray drying tower. After the hot air enters the main body of the flow channel 11, multiple sets of arc-shaped guide plates 14 are evenly distributed along the flow direction of the hot air and arranged at a certain interval to form a guide plate group, which can adjust and optimize the flow direction and speed of the hot air. Then the optimized hot air flow passes through multiple sets of flat guide plates 15. The flat guide plates 15 are responsible for rectifying the flow and can effectively guide the hot air. The overall design of the main body of the flow channel 11 is wider at the front and narrower at the back. When the hot air enters the distributor body from the inlet, the cross-sectional area of ​​the flow channel gradually increases. According to the continuity equation and Bernoulli's equation, under the condition of constant flow rate, as the cross-sectional area of ​​the flow channel increases, the flow velocity of the hot air will gradually decrease, and the pressure distribution will be more uniform. This design can effectively avoid the situation where the local flow velocity of the hot air is too fast or too slow when entering the spray drying tower.

[0021] The maintenance structure 2 includes an extension tube 21, the top end of which is rotatably connected to a sealing cover plate 22 via a rotating shaft, and the extension tube 21 is inserted and fixed in the maintenance port opened at the top end of the gradually expanding flow channel 1.

[0022] When maintenance is required, the sealing cover 22 can be rotated open, and the inside of the gradually expanding flow channel 1 can be observed through the extension tube 21 to see if there are any problems such as damage.

[0023] The backflush structure 3 also includes an air blowing pipe 32, which is L-shaped. One end of the air blowing pipe 32 is fitted with a sealing ring 33. One end of the air blowing pipe 32 passes through the gradually expanding flow channel 1 and is inserted and fixed inside the gradually expanding flow channel 1. The other end of the air blowing pipe 32 is fixedly connected to a threaded connector 34.

[0024] When dust accumulates inside the gradually expanding flow channel 1 after long-term use, the front flange 13 is disassembled, and then two sets of vibration motors 31 are driven to vibrate, which will shake off the dust remaining on the inner wall of the gradually expanding flow channel 1. Then, the exhaust pipe of the external fan is installed at the threaded connector 34, and the fan blows air into the gradually expanding flow channel 1 through the air blowing pipe 32. With the hot air blown out by the hot air blower, the detached dust can be blown out towards the front flange 13 side, completing the entire cleaning work.

[0025] It has the following advantages: 1. Uniform hot air distribution: The overall design adopts a gradually expanding flow channel 1, and two sets of guide plates are installed inside, which makes the hot air distribution in the spray drying tower more uniform, improves the drying uniformity of the material, and ensures the stability of product quality; 2. Effectively prevents powder accumulation: The back-blowing structure 3 and the two sets of vibration motors 31 can automatically remove the powder that has been attached, solving the problem of easy powder accumulation in traditional hot air distributors; 3. Improved drying efficiency: The gradually expanding flow channel 1 allows the hot air to fully contact the material, improving the heat exchange efficiency, thereby significantly improving the spray drying efficiency, shortening the drying time, and reducing energy consumption; 4. Reduced production costs: The back-blowing structure 3 realizes automatic removal of accumulated powder, eliminating the need for manual shutdown for cleaning, reducing production interruption time, and lowering labor and equipment maintenance costs.

[0026] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention includes the claims being limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0027] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0028] The contents not described in detail in this specification do not improve upon this application and are all prior art known to those skilled in the art, and therefore are not described in detail.

Claims

1. A powder-resistant hot air distributor for spray drying towers, characterized in that: It includes a gradually expanding flow channel (1), with an inspection port at the top of the gradually expanding flow channel (1), and an inspection structure (2) fixedly connected inside the inspection port. A backflush structure (3) is installed at the bottom of the gradually expanding flow channel (1). The gradually expanding flow channel (1) includes a flow channel body (11), which is a hollow tubular structure that is wider at the front and narrower at the back. Several sets of first rotating shafts are evenly arranged on the inner wall of the rear end of the flow channel body (11), and an arc-shaped guide plate (14) is rotatably connected to the surface of each first rotating shaft. Several sets of second rotating shafts are evenly arranged on the inner wall of the middle section of the flow channel body (11), and a flat guide plate (15) is rotatably connected to the surface of each set of second rotating shafts. The backflush structure (3) includes a vibration motor (31), which has two sets and is symmetrically fixed on both sides of the gradually expanding flow channel (1); it also includes an L-shaped air blowing pipe (32), one end of which passes through the gradually expanding flow channel (1) and is inserted and fixed inside the gradually expanding flow channel (1). The maintenance structure (2) includes an extension tube (21), and a sealing cover plate (22) is rotatably connected to the top end of the extension tube (21) via a rotating shaft.

2. The anti-powder-accumulation hot air distributor for spray drying towers according to claim 1, characterized in that: The rear end of the flow channel body (11) is fixedly connected to a rear flange (12), and the front end of the flow channel body (11) is fixedly connected to a front flange (13).

3. The anti-powder-accumulation hot air distributor for spray drying towers according to claim 1, characterized in that: One end of the air blowing pipe (32) is fitted with a sealing ring (33), and the other end is fixedly connected with a threaded connector (34).

4. The anti-powder-accumulation hot air distributor for spray drying towers according to claim 3, characterized in that: The air blowing pipe (32) has an external fan, and the exhaust pipe of the external fan is installed at the threaded connector (34).

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