Atomizing device of rice polishing machine

Abstract

The utility model discloses a kind of atomizing devices of rice polishing machine, specifically related to rice processing field, including shell, the shell lower part is equipped with several spray nozzles, the shell upper part is equipped with air injection mechanism, the shell upper part is equipped with infusion mechanism, the shell middle part is equipped with guiding mechanism.The atomizing device of rice polishing machine of the utility model, the two-stage atomization structure of " airflow shearing+screen secondary crushing" is innovatively used in the device, air injection mechanism is accelerated airflow through Venturi channel, annular water film formed by infusion mechanism is torn in first level, preliminary liquid filament is formed, then the screen in guiding mechanism is secondary sheared to liquid filament through dense mesh, finally make mist drop diameter stable control in the best interval of 50-100 microns, this size mist drop can soften bran sufficiently, facilitate polishing, also can avoid the rice grain agglomeration caused by excessive moisture, significantly improve the smoothness and whole rice rate of finished product rice.

Description

Technical Field

[0001] This utility model relates to the field of rice processing, and in particular to an atomization device for a rice polishing machine. Background Technology

[0002] In the rice processing industry, polishing is a key process for improving the quality of rice. Its core objective is to remove residual bran powder from the surface of rice grains, giving them a clean and shiny appearance, while simultaneously reducing grain breakage during processing and extending the shelf life of the finished rice. The atomization device, as a core auxiliary component of the rice polishing machine, directly determines the polishing effect. By evenly spraying a fine water mist into the polishing chamber, it softens the bran powder on the surface of the rice grains for easier removal, while preventing problems such as grain clumping due to excessive moisture or bran powder residue and grain abrasion due to insufficient moisture. Therefore, efficient and stable atomization technology has become an important research direction in the field of rice deep processing.

[0003] Chinese Patent Publication No. CN205850943U discloses a water-applying device for a rice polishing machine. This utility model includes a warm water tank, a pressure device, and a water storage pipe. The water temperature in the warm water tank is controlled between 10 and 18°C. While the rice is being polished on the polishing roller, warm water from the warm water tank is simultaneously introduced into the water storage pipe through the inlet pipe. The pressure device also operates, further increasing the water pressure, causing the wet water to be sprayed from the multi-hole nozzles on the water storage pipe, adhering to the surface of the rice. Additionally, water drips from the drain pipe on the water storage pipe onto a conical surface. As the polishing roller rotates, the dripping water splashes back onto the conical surface, further adhering to the rice and ensuring sufficient moisture content on the outer surface of the rice for better polishing on the polishing roller, making the rice less prone to breakage. This utility model has a simple structure and allows the rice to be polished with water mist during processing, increasing the yield of whole rice and demonstrating strong practicality.

[0004] The aforementioned patent documents still have the following defects in practice:

[0005] The device uses a primary atomization method of "pressure water spray + mechanical back splash": On the one hand, the multi-hole nozzle relies solely on the pressure device to increase water pressure to form water mist, without introducing airflow shearing technology. On the other hand, the droplet diameter of water pressure atomization is usually more than several hundred micrometers (far larger than the 50-100 micrometer droplets required for rice polishing), and cannot penetrate the bran powder on the surface of rice grains. Utility Model Content

[0006] The main objective of this invention is to provide an atomizing device for a rice polishing machine, which can effectively solve the problems mentioned above.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] An atomizing device for a rice polishing machine includes a housing, a plurality of spray nozzles at the lower part of the housing, an air jet mechanism at the upper part of the housing, a liquid delivery mechanism at the upper part of the housing, and a guiding mechanism at the middle part of the housing.

[0009] Preferably, the infusion mechanism includes a water-collecting tray, which is disposed on the upper part of the outer shell. A conical block is provided in the middle of the water-collecting tray. A plurality of circular holes are arranged in a ring around the outer ring of the water-collecting tray. A plurality of water-guiding grooves are arranged in a ring around the middle of the water-collecting tray. Two water-guiding blocks are provided in the middle of each of the plurality of water-guiding grooves. An annular plate is provided in the middle of the water-collecting tray.

[0010] Preferably, the infusion mechanism includes a water delivery pipe, the lower part of which is disposed on the upper part of the outer shell, the water delivery pipe is located directly above the conical block, and the water tray is conical.

[0011] Preferably, the jet mechanism includes a plurality of air supply pipes II, which are fixed together on the upper part of the outer shell. An air supply ring is provided on the upper part of the plurality of air supply pipes II. Two air supply pipes I are provided on the upper part of the air supply ring, and jet nozzles are provided on the lower part of the air supply pipes II.

[0012] Preferably, the inner cavities of the first gas supply pipe, the gas supply ring, and the second gas supply pipe are connected.

[0013] Preferably, the guiding mechanism includes a screen, which is disposed in the middle of the inner cavity of the outer shell.

[0014] Preferably, the guiding mechanism further includes three helical blades, which are disposed in the lower part of the inner cavity of the housing.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In this embodiment, traditional devices rely solely on single-pressure atomization, resulting in droplet diameters mostly in the hundreds of micrometers, which cannot effectively penetrate the bran powder on the surface of rice grains. This device innovatively adopts a two-stage atomization structure of "airflow shearing + secondary crushing by screen". The jet mechanism accelerates the airflow through the Venturi channel, tearing the annular water film formed by the liquid delivery mechanism in the first stage to form preliminary liquid filaments. Subsequently, the screen in the guiding mechanism performs secondary shearing on the liquid filaments through dense mesh, ultimately stabilizing the droplet diameter within the optimal range of 50-100 micrometers. Droplets of this size can fully soften the bran powder, making it easy to polish and remove, while avoiding rice grain clumping caused by excessive moisture or bran powder residue and rice grain wear caused by insufficient moisture, significantly improving the smoothness and whole rice yield of the finished rice.

[0017] 2. In this embodiment, during implementation, the liquid delivery mechanism uses a conical block for diversion, a water guide channel for directional guidance, and a water guide block for flow rate control to ensure that the liquid enters the circular holes on the outer ring of the water tray evenly, forming a continuous and uniformly thick annular water film. The air delivery ring design of the jet mechanism ensures that the airflow is radially uniformly distributed, avoiding the problem of "high pressure at the near end and low pressure at the far end," and ensuring that each jet nozzle exerts a consistent shearing force on the water film. The spiral blades of the guiding mechanism further guide the droplets to flow evenly towards the spray nozzles, ultimately achieving uniform spraying of droplets within the polishing chamber. This design effectively solves the defects of traditional devices such as "local over-wetting and local dryness," ensuring that all rice grains receive appropriate wetting, and significantly improving the quality stability of the finished rice after polishing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the infusion mechanism of this utility model;

[0021] Figure 4 This is a schematic diagram of the jet mechanism structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the guiding mechanism structure of this utility model.

[0023] In the diagram: 1. Outer shell; 2. Spray nozzle; 3. Jet mechanism; 31. Gas supply pipe one; 32. Gas supply ring; 33. Gas supply pipe two; 34. Jet nozzle; 4. Liquid delivery mechanism; 41. Water supply pipe; 42. Water tray; 43. Conical block; 44. Annular plate; 45. Water guide groove; 46. Circular hole; 47. Water guide block; 5. Guiding mechanism; 51. Screen; 52. Spiral blade. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] Example 1, as Figure 1 - Figure 2 As shown, an atomizing device for a rice polishing machine includes a housing 1, a plurality of spray nozzles 2 at the lower part of the housing 1, an air jet mechanism 3 at the upper part of the housing 1, a liquid delivery mechanism 4 at the upper part of the housing 1, and a guiding mechanism 5 in the middle of the housing 1.

[0026] In this embodiment, the device is installed on the upper part of the rice polishing machine. When in use, the jet mechanism 3 is connected to the air pump and the liquid delivery mechanism 4 is connected to the water pump. The jet mechanism 3 tears the water film delivered by the liquid delivery mechanism 4, and after being torn a second time by the guide mechanism 5, it is guided to the spray nozzle 2 and sprayed out from the spray nozzle 2. The spray nozzle 2 sprays the rice stream at a set angle to complete the atomization and wetting.

[0027] To ensure that each jet nozzle 34 sprays the corresponding water, refer to Figure 3 The infusion mechanism 4 includes a water tray 42, which is located on the upper part of the outer shell 1. A conical block 43 is provided in the middle of the water tray 42. A number of circular holes 46 are arranged in an annular array on the outer ring of the water tray 42. A number of water guide grooves 45 are arranged in an annular array in the middle of the water tray 42. Two water guide blocks 47 are provided in the middle of each of the water guide grooves 45. An annular plate 44 is provided in the middle of the water tray 42. The infusion mechanism 4 includes a water delivery pipe 41, which is located on the upper part of the outer shell 1. The water delivery pipe 41 is located directly above the conical block 43. The water tray 42 is conical.

[0028] During implementation, the water supply pipe is connected to the water pump. When the water pump is started, water flows through the water supply pipe 41 to the conical block 43 and is diverted to the water tray 42. Then it flows into the water guide groove 45 between the water tray 42 and the annular plate 44. The conical block 43 blocks the liquid falling from the water supply pipe 41 and guides the liquid to the water guide groove 45 around the water tray 42. At the same time, it buffers the impact kinetic energy of the buffer body and avoids liquid splashing. The number of water guide grooves 45 and round holes 46 is the same, forming a radial annular array. The liquid outside the annular plate 44 is guided to the corresponding round hole 46. At the same time, the liquid flow rate is adjusted by the water guide block 47 to ensure that the liquid enters the round hole 46 evenly and forms a water film.

[0029] Example 2: In order to tear the water film, refer to... Figure 4 The jet mechanism 3 includes several air supply pipes 33, which are fixed together on the upper part of the outer shell 1. The upper part of the several air supply pipes 33 is provided with an air supply ring 32. The upper part of the air supply ring 32 is provided with two air supply pipes 31. The lower part of the air supply pipes 33 is provided with a jet nozzle 34. The inner cavities of the air supply pipes 31, the air supply ring 32 and the air supply pipes 33 are connected.

[0030] During implementation, two gas supply pipes 31 are connected to the same air pump, which sends gas into the gas supply ring 32, and then splits it into several gas supply pipes 33. The gas is then ejected by the jet nozzles 34. The gas supply ring 32 ensures that the airflow is radially evenly distributed, avoiding the problem of "high pressure at the near end and low pressure at the far end" caused by single-pipe gas supply. This ensures that the jet nozzles 34 are subjected to consistent force when shearing the liquid film. The gas supply pipes 33 are rigid structures that can support the gas supply ring 32. The jet nozzles 34 are arranged in a ring array with an angle of 5 with the outer shell axis. The lower part is directly opposite the ring liquid film formed at the circular hole 46. Its function is to accelerate the airflow delivered by the gas supply pipes 33, impact the liquid film and tear it, and complete the first-stage airflow shearing. The jet nozzles 34 form a Venturi channel with a larger upper part and a smaller lower part. While accelerating the airflow, the high-speed airflow can flush the residual liquid on the inner wall and reduce the blockage rate.

[0031] To perform a secondary tearing of the liquid filament, see [link / reference]. Figure 5 The guiding mechanism 5 includes a screen 51, which is disposed in the middle of the inner cavity of the outer shell 1. The guiding mechanism 5 also includes three spiral blades 52, which are disposed in the lower part of the inner cavity of the outer shell 1.

[0032] During implementation, the screen 51 performs secondary shearing on the liquid filaments through the mesh, breaking them into finer droplets to meet the requirements of rice polishing for droplet fineness. The spiral blades 52 guide the water mist, control the droplet flow rate, and ensure that all droplets are evenly delivered to several spray nozzles 2.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An atomizing device for a rice polishing machine, comprising a housing (1), characterized in that: The lower part of the outer shell (1) is provided with several spray nozzles (2), the upper part of the outer shell (1) is provided with a jetting mechanism (3), the upper part of the outer shell (1) is provided with an infusion mechanism (4), and the middle part of the outer shell (1) is provided with a guiding mechanism (5).

2. The atomizing device for a rice polishing machine according to claim 1, characterized in that: The infusion mechanism (4) includes a water-collecting tray (42), which is located on the upper part of the outer shell (1). A conical block (43) is provided in the middle of the water-collecting tray (42). A number of circular holes (46) are arranged in an annular array on the outer ring of the water-collecting tray (42). A number of water-guiding grooves (45) are arranged in an annular array in the middle of the water-collecting tray (42). Two water-guiding blocks (47) are provided in the middle of each of the water-guiding grooves (45). An annular plate (44) is provided in the middle of the water-collecting tray (42).

3. The atomizing device for a rice polishing machine according to claim 2, characterized in that: The infusion mechanism (4) includes a water inlet pipe (41), the lower part of which is located on the upper part of the outer shell (1). The water inlet pipe (41) is located directly above the conical block (43), and the water tray (42) is conical.

4. The atomizing device for a rice polishing machine according to claim 1, characterized in that: The jet mechanism (3) includes several air supply pipes (33), which are fixed together on the upper part of the outer shell (1). The upper part of the several air supply pipes (33) is provided with an air supply ring (32), and the upper part of the air supply ring (32) is provided with two air supply pipes (31), and the lower part of the air supply pipes (33) is provided with a jet nozzle (34).

5. The atomizing device for a rice polishing machine according to claim 4, characterized in that: The inner cavities of the first gas pipe (31), the gas ring (32), and the second gas pipe (33) are connected.

6. The atomizing device for a rice polishing machine according to claim 1, characterized in that: The guiding mechanism (5) includes a screen (51), which is disposed in the middle of the inner cavity of the outer shell (1).

7. The atomizing device for a rice polishing machine according to claim 6, characterized in that: The guiding mechanism (5) also includes three helical blades (52), which are disposed in the lower part of the inner cavity of the outer shell (1).

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