Spray drying device for preparing rapeseed oil microcapsules

Abstract

The utility model provides a spray drying device for preparing rapeseed oil microcapsules. The spray drying device is characterized in that a liquid inlet pipe is arranged at the upper part of a spray drying tank, a plurality of uniformly distributed oil spraying heads are arranged on the lower side of the liquid inlet pipe, a hot air pipe is arranged at the lower part of the spray drying tank, and a plurality of uniformly distributed air outlet heads are arranged on the upper side of the hot air pipe; the liquid inlet pipe and the hot air pipe are vortex pipes, a screen is arranged in the middle of the spray drying tank, uniform mesh holes are formed in the screen, and the aperture of the mesh holes is larger than the maximum particle size of microcapsules; an exhaust pipe is arranged at the top of the spray drying tank; a discharge pipe is arranged at the bottom of the spray drying tank. According to the device, spray drying equipment is optimized, the vortex type liquid inlet pipe and the hot air pipe are arranged, the contact efficiency of hot air and liquid is improved, and therefore rapid drying is achieved; through the screen arranged on the spray drying tank, the speed of hot air can be reduced, the hot air is prevented from directly blowing the rapeseed oil emulsion, and the product quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of rapeseed oil microcapsule preparation, and more specifically, to a spray drying device for rapeseed oil microcapsule preparation. Background Art

[0002] In the food industry, microencapsulation technology is widely used in protecting sensitive ingredients, controlling release, and improving product stability. As a common edible oil, rapeseed oil can be effectively prevented from oxidation and deterioration through microencapsulation treatment, thus extending its shelf life. However, existing spray drying devices have problems such as low efficiency and poor microencapsulation effect during the processing. Therefore, developing a highly efficient and controllable spray drying device is of great significance for improving the quality of rapeseed oil microcapsules. Summary of the Utility Model

[0003] Based on the above technical problems, the utility model proposes a spray drying device for rapeseed oil microcapsule preparation, which can achieve efficient microencapsulation treatment and improve product quality.

[0004] A spray drying device for rapeseed oil microcapsule preparation includes: a spray drying tank, an inlet pipe is provided at the upper part of the spray drying tank, several uniformly distributed oil spray nozzles are provided below the inlet pipe, a hot air pipe is provided at the lower part of the spray drying tank, and several uniformly distributed air outlets are provided above the hot air pipe; both the inlet pipe and the hot air pipe are vortex pipes, a screen is provided in the middle of the spray drying tank, the screen is provided with uniform mesh holes, and the aperture of the mesh holes is larger than the maximum particle size of the microcapsules; an exhaust pipe is provided at the top of the spray drying tank, and a discharge pipe is provided at the bottom of the spray drying tank.

[0005] Preferably, an exhaust fan is further provided on the exhaust pipe.

[0006] Preferably, a gauze net is provided above the inlet pipe, and the mesh holes of the gauze net are smaller than the minimum particle size of the microcapsules.

[0007] Preferably, the screen is rotatably arranged in the spray drying tank.

[0008] Advantageous Effects:

[0009] 1. The device optimizes the spray drying equipment, and the vortex inlet pipe and hot air pipe are set to improve the contact efficiency between hot air and liquid, thus achieving rapid drying;

[0010] 2. By setting the screen in the spray drying tank, it can reduce the wind speed of the hot air, avoid the hot air blowing directly on the rapeseed oil emulsion, and ensure product quality;

[0011] 3. By setting the gauze net, the loss of microcapsules is effectively prevented, and the production environment is kept clean. Description of the Drawings

[0012] Figure 1 Shows the schematic internal structure of the present utility model Figure 1 ;

[0013] Figure 2 Shows the schematic internal structure of the present utility model Figure 2 ;

[0014] Figure 3 Shows the schematic diagram of the overall structure of the present utility model. Detailed Description of the Invention

[0015] In order to more clearly understand the above objects, features and advantages of the present utility model, the present utility model will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0016] As Figures 1 to 3 shown, a spray drying device for the preparation of rapeseed oil microcapsules, an inlet pipe 3 is provided at the upper part of the spray drying tank 1, and a plurality of uniformly distributed oil injection nozzles 5 are provided on the lower side of the inlet pipe 3. The oil injection nozzles 5 can uniformly spray rapeseed oil emulsion into the spray drying tank 1. The connecting pipe 4 at the outer end of the inlet pipe 3 is connected to an oil delivery device, and the oil delivery device delivers the mixed emulsion of rapeseed oil into the inlet pipe 3.

[0017] A hot air pipe 7 is provided at the lower part of the spray drying tank 1. The outer connecting pipe 8 of the hot air pipe 7 passes through the spray drying tank and is connected to a hot air blower. A plurality of uniformly distributed air outlets 9 are provided on the upper side of the hot air pipe 7, and the air outlets 9 are uniformly distributed; both the inlet pipe 3 and the hot air pipe 7 are vortex pipes. A screen 6 is provided in the middle of the spray drying tank 1. The screen 6 is provided with uniform mesh holes, and the aperture of the mesh holes is larger than the maximum particle size of the microcapsules; an exhaust pipe 11 is provided on the tank cover 2 at the top of the spray drying tank 1, and a discharge pipe 10 is provided at the bottom of the spray drying tank 1.

[0018] The hot air from the air outlet 9 is in a heat dissipation state from bottom to top. At a certain distance from the air outlet 9 (the screen 6 is arranged a little below this position), the hot air completely covers the spray drying tank 1. The hot air outlet wind speed of the air outlet 9 should ensure that the microcapsules will not fall onto the air outlet 9, and there is a gap between the air outlets 9. When the microcapsules are dried and formed, they will pass through the hot air pipe 7 and fall to the bottom of the spray drying tank 1 and be discharged from the discharge pipe 10.

[0019] In a possible implementation manner, on the basis of natural exhaust, an exhaust fan 12 can also be arranged on the exhaust pipe 11 to improve the exhaust efficiency.

[0020] In a possible implementation, a gauze mesh 13 is provided above the liquid inlet pipe 3. The mesh holes of the gauze mesh 13 are smaller than the minimum particle size of the microcapsules. By providing the gauze mesh 13, the loss of the microcapsules can be effectively prevented.

[0021] In a possible implementation, the sieve mesh 6 is rotatably arranged in the spray drying tank 1. The main function of the sieve mesh 6 is to slow down the wind speed. However, some microcapsules will remain on the sieve mesh 6. Therefore, the sieve mesh 6 is set in a rotatable mode, and rotating shafts 14 are provided at both ends thereof. By externally rotating the rotating shafts 14 to change the angle of the sieve mesh 6, the remaining microcapsules can fall to the bottom of the spray drying tank 1.

[0022] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A spray drying device for the preparation of rapeseed oil microcapsules, characterized in that, Including: A spray drying tank, an inlet pipe is provided at the upper part of the spray drying tank, several uniformly distributed oil spray nozzles are provided on the lower side of the inlet pipe, a hot air pipe is provided at the lower part of the spray drying tank, and several uniformly distributed air outlets are provided on the upper side of the hot air pipe; both the inlet pipe and the hot air pipe are vortex pipes, a sieve is provided in the middle of the spray drying tank, the sieve is provided with uniform mesh holes, and the aperture of the mesh holes is larger than the maximum particle size of the microcapsules; an exhaust pipe is provided at the top of the spray drying tank, and a discharge pipe is provided at the bottom of the spray drying tank.

2. The spray drying device for preparing rapeseed oil microcapsules according to claim 1, wherein, An exhaust fan is further provided on the exhaust pipe.

3. The spray drying device for preparing rapeseed oil microcapsules according to claim 1, characterized in that, A gauze net is provided above the inlet pipe, and the mesh holes of the gauze net are smaller than the minimum particle size of the microcapsules.

4. The spray drying device for preparing rapeseed oil microcapsules according to claim 1, wherein The sieve is rotatably arranged in the spray drying tank.

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