Low-temperature drying equipment for producing diacetyl tartaric acid ester of mono (di) glycerides

Abstract

The utility model discloses low-temperature drying equipment for producing diacetyl tartaric acid ester of mono (di) glycerides, which comprises a vacuum box body, the vacuum box body is communicated with a cold air input device, and a cold air circulating system is arranged at the joint of the cold air input device and the vacuum box body. The cold air circulating system comprises an air uniformizing plate and a flow guide structure which are arranged in a stacked mode, a tray mechanism is arranged below the flow guide structure and used for containing diacetyl tartaric acid ester of mono (di) glycerides, and an absorption tank is further arranged on the side, opposite to the cold air input device, of the vacuum box body. According to the technical scheme, the problems of thermal degradation, non-uniform drying and caking of materials in a traditional drying method are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to drying equipment technical field especially relates to a low temperature drying equipment of production diacetyl tartaric acid esters of monoglycerides and diglycerides. BACKGROUND

[0002] As a commonly used food emulsifier, diacetyl tartaric acid esters of monoglycerides and diglycerides are widely used in baking products such as bread and cake to improve dough stability, increase product volume and prolong shelf life. In the existing production process, diacetyl tartaric acid esters of monoglycerides and diglycerides are usually generated by esterification reaction, and then a drying step is needed to obtain stable solid finished products.

[0003] The existing drying technology mainly adopts hot air drying, spray drying or vacuum drying. Although the hot air drying process is simple, it can easily lead to surface oxidation, caking or performance degradation of diacetyl tartaric acid esters of monoglycerides and diglycerides under high temperature conditions. Spray drying requires large equipment investment and high energy consumption, and poses challenges to subsequent material recovery and dust control. Although traditional vacuum drying can reduce material temperature, the air flow organization is not reasonable, which often leads to uneven drying and serious caking, affecting product quality and yield. SUMMARY

[0004] The main purpose of the utility model is to provide a low temperature drying equipment for producing diacetyl tartaric acid esters of monoglycerides and diglycerides, which aims to solve the problems of thermal degradation, uneven drying and caking of materials in traditional drying methods.

[0005] To achieve the above purpose, the utility model provides a low temperature drying equipment for producing diacetyl tartaric acid esters of monoglycerides and diglycerides, which comprises a vacuum box body, the vacuum box body is communicated with a cold air input device, the connection between the cold air input device and the vacuum box body is provided with a cold air circulation system, the cold air circulation system comprises a uniform air distribution plate and a flow guide structure arranged in layers, a tray mechanism is arranged below the flow guide structure for accommodating diacetyl tartaric acid esters of monoglycerides and diglycerides, and an absorption tank is further arranged on the opposite side of the vacuum box body relative to the cold air input device.

[0006] In one possible implementation, the uniform air distribution plate is uniformly provided with a plurality of ventilation holes for uniformly distributing cold air flow.

[0007] In one possible implementation, the flow guide structure comprises an array of regular hexagonal units, and the hexagonal units form a honeycomb topology through common walls.

[0008] In one possible implementation, the tray mechanism comprises a plurality of layers of trays, and each layer of the trays is detachably connected with the inner wall of the vacuum box body.

[0009] In a possible implementation, the upper surface array of the tray is provided with a plurality of grooves.

[0010] The tray is sprayed with an anti-sticking coating on the upper surface.

[0011] In a possible implementation, the tray is provided below with a plurality of vibration pieces to prevent the material from caking or gathering during the drying process.

[0012] The technical scheme of the utility model realizes the efficient drying of diacetyl tartaric acid esters of mono and diglycerides under low temperature conditions, effectively improves the purity and stability of the product, reduces the drying temperature in a vacuum environment, ensures uniform drying through cold air guiding, optimizes the material distribution through the tray structure and prevents sticking, and avoids condensation pollution through the absorption system. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained from the structure shown in the drawings without creative labor.

[0014] Fig. 1 It is a structural schematic view of an embodiment of the low-temperature drying equipment of the utility model;

[0015] Fig. 2 It is a structural schematic view of an embodiment of the low-temperature drying equipment of the utility model;

[0016] Fig. 3 It is another view of the internal structure schematic view of an embodiment of the low-temperature drying equipment of the utility model.

[0017] Explanation of reference numerals:

[0018] 10, vacuum box body; 20, cold gas input device; 30, cold air circulation system; 31, air distribution plate; 32, guiding structure; 40, tray mechanism; 41, tray; 411, vibration piece; 50, absorption tank.

[0019] The realization, functional characteristics and advantages of the utility model will be further described with reference to the drawings combined with the embodiments. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the present application more clear, the following will further describe the present application combined with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0021] To solve the problems in the background art, in combination with the description of the drawings Figs. 1 to 3 The utility model provides a low temperature drying equipment for producing diacetyl tartaric acid esters of monodiglycerides, which comprises a vacuum box 10, a cold gas input device 20 connected to the vacuum box 10, a cold air circulation system 30 arranged at the connection between the cold gas input device 20 and the vacuum box 10, a tray mechanism 40 arranged below the cold air circulation system 30 for accommodating diacetyl tartaric acid esters of monodiglycerides, and an absorption tank 50 arranged at the opposite side of the cold gas input device 20.

[0022] In the embodiment, the device mainly comprises the vacuum box 10, the cold gas input device 20, the cold air circulation system 30, the tray mechanism 40 and the absorption tank 50, and the components closely cooperate with each other to realize efficient and stable drying of diacetyl tartaric acid esters of monodiglycerides in a low temperature environment. In the working process, the vacuum box 10 first forms a low pressure environment through a vacuum pump, significantly reduces the evaporation temperature of the water or solvent on the surface of the material, so that the drying process can be carried out at a temperature much lower than the normal pressure boiling point, thereby effectively avoiding the structural damage or loss of activity of the emulsifier during the drying process. The cold gas input device 20 is used to introduce dry gas (such as cold air or inert gas) after refrigeration into the vacuum box 10. The device is arranged at one end of the box and connected to the cold air circulation system 30 inside. The cold gas first passes through the air equalizing plate 31 to realize preliminary pressure equalization and diffusion, and then is guided by the air guide structure 32 to form a smooth and uniform airflow, which covers the entire tray 41 area, ensuring that each level of material receives a consistent cold air drying environment. The tray mechanism 40 arranged below the air guide structure is used to carry the diacetyl tartaric acid esters of monodiglycerides. The tray 41 can have a multi-layer structure and can be disassembled and maintained. Each layer of the tray 41 is provided with a micro groove to increase the gas contact area and is sprayed with an anti-sticking coating to prevent the material from adhering or remaining during the drying process, facilitating subsequent removal and cleaning. A micro-vibration device can also be arranged below the tray 41 to relieve material caking and accumulation during low-temperature drying through intermittent vibration, further improving drying efficiency and product uniformity. To prevent the moisture or volatile components generated during the drying process from condensing and falling back in the box, the absorption tank 50 is arranged at the opposite side of the cold gas input device 20. The absorption tank 50 can effectively collect water vapor or solvent vapor through physical condensation or adsorption, ensuring the sustainability of the vacuum drying environment and the stability of the drying quality.

[0023] Specifically, the vacuum box 10 is connected with an external air extraction system through a vacuum pump for forming a low-pressure environment required for drying. One end of the vacuum box 10 is provided with a cold air input device 20 which is connected with an external refrigeration system through a connecting flange and can continuously deliver low-temperature dry air in the range of 5-15℃ to the inside of the box. In the connecting area of the cold air input device 20 and the vacuum box 10, a cold air circulation system 30 is arranged, which includes a porous air uniformizing plate 31 arranged in a stack and a honeycomb flow guide structure 32 below the air uniformizing plate 31. The air uniformizing plate 31 is used to realize preliminary pressure equalization and diffusion of the entering cold air in space, and the flow guide structure 32 directs the airflow to the area of the material tray 41 through a multi-channel structure, effectively improving the airflow passability and drying uniformity. A tray mechanism 40 is arranged below the flow guide structure 32, including a plurality of groups of vertically layered trays 41, each of which is made of food-grade stainless steel material and has a surface provided with uniformly distributed micro grooves for increasing the contact area of the material and the cold air; the surface of the tray 41 is sprayed with a low-temperature resistant anti-sticking coating to prevent the material from adhering during the drying process. The tray 41 is detachable for easy cleaning and maintenance. A vibration piece 411 is arranged below each layer of the tray 41 and is driven by piezoelectric or electromagnetic type, with an intermittent start mode, for example, 30 seconds of vibration every 15 minutes, to generate slight vibration and effectively prevent the agglomeration or caking of diacetyl tartaric acid esters of mono and diglycerides during the drying process. An absorption tank 50 is also arranged at the end of the vacuum box 10 opposite to the cold air input device 20 and is connected with the vacuum box 10 through a conduit, and a condensation component or an adsorption material can be arranged inside the absorption tank 50 for collecting the moisture or organic solvent vapor discharged during the drying process to prevent the condensation backflow in the vacuum cavity and affect the drying efficiency and product purity.

[0024] In summary, the present application realizes the efficient drying of diacetyl tartaric acid esters of mono and diglycerides under low-temperature conditions by reducing the drying temperature in a vacuum environment, ensuring the uniform drying by cold air flow guide, optimizing the material distribution and preventing sticking by the structure of the tray 41, and avoiding condensation pollution by the absorption system, which not only improves the purity and stability of the product, but also has strong adaptability and industrial feasibility.

[0025] In a possible implementation, the air uniformizing plate 31 is uniformly provided with a plurality of air holes (not shown) for uniformly distributing the cold air flow.

[0026] In the present embodiment, the air equalization plate 31 serves as an intermediate airflow regulation layer between the cold air input device 20 and the material tray 41, which functions to spatially diffuse and regulate the speed of the cold air flowing in at high speed from a single inlet, so that a smooth and uniform air field is formed before the airflow enters the flow guide structure 32. By uniformly arranging a plurality of air vents on the air equalization plate 31, the cold air can pass through the air equalization plate 31 in a multi-point diffusion manner, thereby greatly reducing the local airflow speed, relieving airflow impact, and avoiding the problem of local over-drying or air field disorder caused by the cold air directly impacting the tray 41. In addition, the aperture, distribution density, and arrangement of these air vents can be customized according to the size of the box, the air volume design, and the drying requirements to achieve the best wind speed attenuation and pressure balance effect. Reasonable design of the air vents can also effectively reduce wind resistance and improve wind energy utilization, so that the airflow received by the subsequent honeycomb flow guide structure 32 is more controllable in directionality and speed, thereby improving the overall drying uniformity.

[0027] Reference Fig. 3 As shown in FIG. 1, in one possible implementation, the flow guide structure 32 includes an array of regular hexagonal cells connected by shared walls to form a honeycomb topology.

[0028] In the present embodiment, the application of the honeycomb structure in the management of the gas flow field is of great significance. The regular hexagonal cells are connected by shared walls to form a highly symmetrical two-dimensional topological network, which not only provides a consistent directional air guide path with equal length flow channels, but also balances high ventilation rate and high structural strength in limited space. The honeycomb structure can effectively prevent airflow short circuiting and vortex generation, allowing the cold air to flow stably, parallelly, and uniformly to the lower tray 41 area during the flow guide process, thereby further improving the controllability of the airflow and the uniformity of the drying. In addition, the honeycomb topology itself has self-supporting structural rigidity, facilitating modular manufacturing and assembly, and is suitable for integration in industrial-scale equipment.

[0029] Reference Fig. 2 and Fig. 3 As shown in FIG. 1, in one possible implementation, the tray mechanism 40 includes a plurality of trays 41, each of which is detachably connected to the inner wall of the vacuum box 10.

[0030] In the present embodiment, the multi-layer tray 41 structure is designed by vertical layering, greatly increasing the material capacity of a single drying batch, meeting the needs of continuous or large-scale production. At the same time, the trays 41 maintain a certain distance, facilitating the free penetration of cold air, improving overall space utilization and uniform air coverage. Each layer of tray 41 is detachably connected to the inner wall of the vacuum box 10, which has great flexibility during equipment cleaning, maintenance and tray 41 replacement. Users can flexibly configure the number of trays 41 according to actual production needs, and efficiently replace the trays 41 when the material type is switched to prevent cross-contamination, improve equipment adaptability and hygiene safety.

[0031] Referring to Fig. 2 and Fig. 3 In one possible implementation, the upper surface of the tray 41 is arrayed with a plurality of grooves (not shown); the tray 41 is sprayed with a non-stick coating on the upper surface.

[0032] In the present embodiment, the provision of a plurality of grooves can achieve directional distribution and positioning of the material, preventing disturbance of the material by the air flow under vacuum conditions. At the same time, the groove structure increases the specific surface area per unit area, which is beneficial to the contact between cold air and material, improving drying efficiency. The non-stick coating (such as polytetrafluoroethylene) has good temperature resistance and hydrophobic properties, which can effectively prevent the material from adhering to the surface of the tray 41 during the drying process, not only improving product recovery rate, but also making subsequent cleaning more convenient, prolonging the service life of the tray 41 and reducing cleaning costs.

[0033] Referring to Fig. 2 and Fig. 3 Fig. 2 Fig. 3 In one possible implementation, a plurality of vibration pieces 411 are provided below the tray 41 to prevent material from clumping or gathering during the drying process.

[0034] In the present embodiment, during low-temperature drying, material is prone to stick or locally gather due to slow evaporation of surface moisture, especially in the emulsifier system with slight viscosity. By configuring vibration pieces 411 below the tray 41, the tray 41 is subjected to low-amplitude, high-frequency mechanical disturbance in the form of intermittent or periodic micro-vibration, which can scatter the material gathering area and keep the material in a loose state, ensuring the continuity and uniformity of heat and mass transfer during the drying process. The addition of vibration pieces 411 greatly improves the problem of clumping and incomplete drying in traditional static drying, which is an important guarantee for the overall drying effect and product quality.

[0035] The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the present application, it is understood that if the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right" and the like are based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationships in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present patent, for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0036] The above is only a preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A low temperature drying apparatus for producing diacetyl tartaric acid ester of mono-diglyceride characterized in that, The application relates to a vacuum box body which is communicated with a cold air input device, a cold air circulation system is arranged at the joint of the cold air input device and the vacuum box body, the cold air circulation system comprises a uniform air distribution plate and a flow guide structure which are arranged in layers, a tray mechanism is arranged below the flow guide structure and is used for accommodating double acetyl tartaric acid mono-diglycerides, and an absorption tank is further arranged on the opposite side of the cold air input device.

2. The low temperature drying apparatus for producing diacetyl tartaric acid mono-diglyceride according to claim 1, characterized by, The uniform air distribution plate is uniformly provided with a plurality of ventilation holes and is used for uniformly distributing cold air flow.

3. The low temperature drying apparatus for producing diacetyl tartaric acid mono-diglyceride according to claim 2, characterized by, The flow guide structure comprises an array of regular hexagonal units, and the hexagonal units form a honeycomb topology through a common wall.

4. The low-temperature drying apparatus for producing diacetyl tartaric acid mono-diglyceride according to any one of claims 1 to 3, characterized by, The tray mechanism comprises a plurality of layers of trays, and each layer of the trays is detachably connected with the inner wall of the vacuum box body.

5. The low temperature drying apparatus for producing diacetyl tartaric acid mono-diglyceride according to claim 4, characterized by, An upper surface of the tray is arrayed with a plurality of grooves. The tray is sprayed with an anti-sticking coating on the upper surface.

6. The low temperature drying apparatus for producing diacetyl tartaric acid mono-diglyceride according to claim 5, characterized by, A plurality of vibration pieces are arranged below the tray to prevent material from caking or gathering during the drying process.

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