Food quick-freezing device

Abstract

The utility model discloses a food quick-freezing device, which belongs to the field of food quick-freezing equipment, and comprises a closed dynamic heat preservation feeding device, the closed dynamic heat preservation feeding device consists of two core parts, namely a heat preservation shell and a multi-section heat preservation feeding mechanism, and high-efficiency and heat-preservation transmission of materials is realized by combining a dynamic sealing door technology; the heat preservation shell tightly wraps the outer portion of a mesh belt of a feeding / discharging port of the spiral instant freezer, a closed space is formed, and heat loss is reduced. The multi-section type heat preservation feeding mechanism is designed in a sectional mode, dynamic sealing doors are installed at an inlet and an outlet of each section, and the sealing doors adopt a quick response mechanism and can be automatically opened when materials approach and quickly closed after the materials pass, so that the dynamic sealing effect is achieved; and at least one dynamic sealing door is kept sealed, so that cold in the instant freezer is prevented from directly exchanging heat with the outside.

Description

Technical Field

[0001] This application belongs to the field of food quick-freezing equipment, and particularly relates to a food quick-freezing device. Background Art

[0002] Quick-frozen foods can reduce the central temperature of the food to below -18°C in an extremely short time, effectively inhibiting the reproduction of microorganisms in the food, thereby extending the shelf life of the food. At the same time, quick-freezing can also slow down the loss of nutrients in the food and maintain the original flavor and texture of the food. For example, during the quick-freezing process of meat products, the loss of nutrients such as protein and fat is relatively small, and it can maintain good tenderness and color. Quick-frozen foods are easy to control during the processing process, and are also convenient for storage and transportation. For food production enterprises, the quick-freezing technology can improve production efficiency and product quality, and reduce production costs. At the same time, for consumers, quick-frozen foods also provide more convenient and diverse diet choices. Among them, spiral quick-freezers are widely used in the quick-freezing industry due to their advantages such as compact structure and wide range of frozen products.

[0003] The currently widely used spiral quick-freezer design tends to be in a continuous operation mode, and its feeding and discharging ports are continuously open to maintain the continuity of the production process. However, this design inevitably brings the phenomenon of "cold leakage at the material ports", that is, significant heat exchange occurs between the cold and hot air inside and outside the device at the feeding port. This exchange not only additionally increases the refrigeration burden of the entire refrigeration system because more energy needs to be consumed to compensate for the cold loss caused by the intrusion of hot air; at the same time, the entry of hot air also leads to a significant increase in the humidity inside the quick-freezing device. The increase in humidity further exacerbates the frosting phenomenon on the surface of the heat exchanger, and these frost layers will gradually accumulate and hinder the effective transfer of heat, thereby reducing the heat exchange efficiency of the evaporator. It can be seen that the existing technology needs to be further improved. Summary of the Utility Model

[0004] The utility model provides a food quick-freezing device, which solves the problem of cold leakage at the feeding and discharging ports of the spiral quick-freezer, reduces cold loss, improves quick-freezing efficiency, and maintains the stability of the production environment.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] A food quick-freezing device includes a closed dynamic heat-insulating feeding device. The closed dynamic heat-insulating feeding device includes a heat-insulating housing and a multi-section heat-insulating feeding mechanism. The heat-insulating housing wraps around the outside of the mesh belt at the inlet / outlet of the spiral quick-freezing machine. The multi-section heat-insulating feeding mechanism is connected to the inlet of the heat-insulating housing and is used to feed materials into the mesh belt inside the heat-insulating housing / or feed the materials on the mesh belt out of the spiral quick-freezing machine. A dynamic sealing door structure is installed in each section of the multi-section heat-insulating feeding mechanism. The dynamic sealing door can quickly open when the material approaches or quickly seal and close after the material enters the next section, ensuring that at least one dynamic sealing door in the multi-section heat-insulating feeding mechanism remains sealed during the process of the material entering the heat-insulating housing, so as to reduce the heat exchange between the internal and external environments.

[0007] The food quick-freezing device of the present application consists of two core parts: a heat-insulating housing and a multi-section heat-insulating feeding mechanism. Combining the dynamic sealing door technology, it realizes the efficient and heat-insulating transmission of materials. The heat-insulating housing tightly wraps around the outside of the mesh belt at the inlet / outlet of the spiral quick-freezing machine, forming a closed space to reduce heat dissipation. The multi-section heat-insulating feeding mechanism is designed in sections, and dynamic sealing doors are installed at the inlet and outlet of each section. The sealing doors adopt a quick response mechanism (such as pneumatic, electric or mechanical linkage), can automatically open when the material approaches, and quickly close after the material passes through, forming a dynamic sealing effect. When the material enters different sections of the multi-section heat-insulating feeding mechanism, at least one dynamic sealing door remains sealed, thus preventing the direct heat exchange between the cold quantity in the quick-freezing machine and the outside world. The design of the heat-insulating housing and the dynamic sealing door effectively reduces energy consumption and reduces the additional cooling capacity required due to temperature fluctuations.

[0008] In a preferred implementation, the multi-section heat-insulating feeding mechanism includes a conveying cylinder body. The dynamic sealing doors are evenly spaced on the conveying cylinder body. The conveying cylinder body is inclined and the discharge port at the bottom end communicates with the inlet of the heat-insulating housing.

[0009] The conveying cylinder body, as the main channel for material transmission, is inclined. Using the gravity effect, the material automatically slides down along the cylinder body until it reaches the discharge port at the bottom end, simplifying the transmission mechanism and significantly reducing energy consumption because no additional power is required to push the material forward.

[0010] In a preferred implementation, the high-end inlet of the conveying cylinder body is connected to the discharge port of the screw conveyor, and the rotation speed of the screw conveyor or the pitch of the screw blade is adjusted to control the amount of material entering the spiral quick-freezing machine.

[0011] According to the production requirements of the spiral quick-freezing machine and the capacity of the conveying cylinder body, the rotation speed of the screw conveyor is reasonably set to ensure that the material can smoothly enter the conveying cylinder body, and at the same time avoid damage to the sealing door caused by excessive material accumulation.

[0012] In a preferred implementation, a monitoring member is provided inside the conveying cylinder to monitor the position of the material inside the conveying cylinder and transmit data to the control system, and the control system controls the opening or closing of the dynamic sealing door.

[0013] In a preferred implementation, the dynamic sealing door structure includes a plurality of controllable sealing airbags, and each airbag realizes rapid inflation and deflation through air pressure adjustment, so as to control the opening and closing of the corresponding section.

[0014] The airbag adopts an inflatable sealing method, so a tighter and more reliable sealing effect can be achieved. When the airbag inflates and expands, it can closely fit the inner wall of the conveying cylinder and the surface of the material, effectively preventing heat dissipation and external environmental interference, and the contact between the airbag and the material can reduce the impact and wear on the material. Through the rapid inflation and deflation of the airbag, the opening and closing speed of the dynamic sealing door is faster and more flexible.

[0015] In a preferred implementation, the airbag is made of high-strength synthetic rubber or polyurethane and a smooth coating is provided on the contact surface of the airbag.

[0016] In a preferred implementation, an inclined mesh belt buffer guiding plate is provided inside the heat preservation housing to receive the material fed by the multi-section heat preservation feeding mechanism and guide it to the mesh belt for conveying.

[0017] In a preferred implementation, the heat preservation housing is of a double-layer structure, and heat preservation materials are filled between the layers.

[0018] In a preferred implementation, temperature sensors are provided in different sections of the multi-section heat preservation feeding mechanism to monitor temperature changes, and based on the temperature change data, the dynamic sealing door is maintained.

[0019] The temperature sensor can monitor the temperature of each section in real time and transmit the data to the control system. By comparing the set temperature with the actual temperature, when the temperature of a certain section shows abnormal fluctuations, the temperature sensor can detect it in time and send out a warning signal, so that the staff can quickly take measures to solve the problem. The maintenance of the dynamic sealing door based on temperature changes significantly improves the automation degree and intelligent level of the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present application and do not constitute an improper limitation to the present invention. In the drawings:

[0021] Figure 1 A schematic implementation structure diagram of the food quick-freezing device of the present application is shown;

[0022] Figure 2 It shows the present applicationFigure 1 Schematic enlarged structure diagram of part A

[0023] Label description:

[0024] 1 - Heat preservation housing; 10 - Inlet; 11 - Buffer guiding plate; 2 - Multi - section heat preservation feeding mechanism; 20 - Dynamic sealing door; 21 - Conveying cylinder; 210 - Monitoring part; 211 - Temperature sensor; 22 - Screw conveyor; 3 - Screw quick freezer; 30 - Mesh belt. Detailed implementation mode

[0025] In the following text, only some exemplary embodiments are simply described. As those skilled in the art can recognize, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0026] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present invention. In the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements. However, indicating a direct connection means that there is no connection relationship constructed through an excessive structure between the two connected main bodies, and only a connection structure is used to connect them to form a whole. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0028] In the present invention, descriptions such as "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include at least one of such features.

[0029] The present utility model will be described below in conjunction with the accompanying drawings of the specification.

[0030] The specific solution adopted is as follows:

[0031] As Figure 1-2 shown, the present utility model provides a food quick-freezing device, which includes a closed dynamic heat-insulating feeding device. The closed dynamic heat-insulating feeding device includes a heat-insulating housing 1 and a multi-stage heat-insulating feeding mechanism 2. The heat-insulating housing is wrapped outside the mesh belt 30 at the inlet / outlet of the spiral quick-freezing machine 3; the multi-stage heat-insulating feeding mechanism is connected to the inlet 10 of the heat-insulating housing and is used to send materials into the mesh belt inside the heat-insulating housing / or send the materials on the mesh belt out of the spiral quick-freezing machine. A dynamic sealing door 20 structure is installed in each section of the multi-stage heat-insulating feeding mechanism. The dynamic sealing door can quickly open when the material approaches or quickly seal and close after the material enters the next section, ensuring that at least one dynamic sealing door in the multi-stage heat-insulating feeding mechanism remains sealed during the process of the material entering the heat-insulating housing, so as to reduce the heat exchange between the internal and external environments.

[0032] The food quick-freezing device of the present application is composed of two core parts, namely a heat-insulating housing and a multi-stage heat-insulating feeding mechanism. Combining with the dynamic sealing door technology, it realizes the efficient and heat-insulating transmission of materials. The heat-insulating housing is constructed with a high-efficiency heat-insulating material such as a vacuum insulation panel to ensure the stability of the internal temperature of the housing and reduce the influence of the external environment on the internal temperature. The heat-insulating housing tightly wraps outside the mesh belt at the inlet / outlet of the spiral quick-freezing machine to form a closed space and reduce heat dissipation. The multi-stage heat-insulating feeding mechanism is designed in sections, and dynamic sealing doors are installed at the inlets and outlets of each section. The sealing doors adopt a quick response mechanism (such as pneumatic, electric or mechanical linkage) and can automatically open when the material approaches and quickly close after the material passes through, forming a dynamic sealing effect.

[0033] When the material enters different sections of the multi-stage heat-insulating feeding mechanism, at least one dynamic sealing door remains sealed, thereby preventing the cold in the quick-freezing machine from directly exchanging heat with the outside world. The design of the heat-insulating housing and the dynamic sealing door effectively reduces energy consumption and reduces the additional cooling capacity required due to temperature fluctuations.

[0034] Refer to Figure 2 , in this embodiment, the multi-stage heat-insulating feeding mechanism includes a conveying cylinder 21, and the dynamic sealing doors are evenly spaced on the conveying cylinder. The conveying cylinder is inclined and the discharge port at the bottom end communicates with the inlet of the heat-insulating housing. The conveying cylinder serves as the main channel for material transmission. By adopting an inclined setting, the gravity effect is used to make the material automatically slide down along the cylinder until it reaches the discharge port at the bottom end, which simplifies the transmission mechanism and significantly reduces energy consumption because no additional power is required to push the material forward. The conveying cylinder is also made of a high-efficiency heat-insulating material to maintain the stability of the internal temperature and reduce the heat exchange with the external environment.

[0035] Further, at the high-end inlet of the conveying cylinder body, which is connected to the discharge port of the screw conveyor 22, adjust the rotation speed of the screw conveyor or the pitch of the screw blade to control the amount of material entering the spiral quick-freezing machine. According to the production requirements of the spiral quick-freezing machine and the capacity of the conveying cylinder body, reasonably set the rotation speed of the screw conveyor to ensure that the material can smoothly enter the conveying cylinder body, and at the same time avoid damage to the sealing door caused by excessive material accumulation.

[0036] In addition, a material quantity monitoring device (such as a photoelectric sensor, a weight sensor, etc.) can be installed at the inlet of the conveying cylinder body to monitor the material flow rate and accumulation situation in real time. Once it is found that there is too much material or accumulation phenomenon, an alarm is immediately issued and the rotation speed or pitch of the screw conveyor is adjusted.

[0037] As a preferred embodiment of the present application, a monitoring member 210, such as a photoelectric sensor, is provided inside the conveying cylinder body to monitor the position of the material inside the conveying cylinder body and transmit the data to the control system, and the control system controls the opening or closing of the dynamic sealing door. The photoelectric sensor should be installed at the front side position of the dynamic sealing door to ensure that the specific position of the material inside the conveying cylinder body can be accurately monitored. The specific installation position may need to be determined according to the actual size of the conveying cylinder body, the characteristics of the material and the layout of the dynamic sealing door. According to the length of the conveying cylinder body and the flow characteristics of the material, photoelectric sensors can be installed at multiple positions to form multi-point monitoring. In this way, the distribution of the material inside the conveying cylinder body can be more accurately grasped, the response speed and accuracy of the control system can be improved, and when the control system judges whether the material is approaching the dynamic sealing door according to the received electrical signal, and controls the opening or closing of the sealing door accordingly.

[0038] As a preferred embodiment of the present application, the structure of the dynamic sealing door 20 includes a plurality of controllable sealing air bags. Each air bag realizes rapid inflation and deflation through air pressure adjustment, so as to control the opening and closing of the corresponding section. The air bags are evenly distributed along the length direction of the conveying cylinder body and cover the sections that need to be sealed. Each air bag is equipped with a high-performance air pump for providing rapid and stable inflation and deflation for the air bag. The air bag adopts an inflatable sealing method, so it can achieve a more tight and reliable sealing effect. When the air bag inflates and expands, it can closely fit the inner wall of the conveying cylinder body and the surface of the material, effectively preventing heat dissipation and external environmental interference, and the contact between the air bag and the material can reduce the impact and wear on the material. Through the rapid inflation and deflation of the air bag, the opening and closing speed of the dynamic sealing door is faster and more flexible.

[0039] Further, the air bag is made of high-strength synthetic rubber or polyurethane, and a smooth coating is provided on the contact surface of the air bag.

[0040] High-strength synthetic rubber has excellent elasticity, wear resistance, oil resistance and chemical corrosion resistance. In the application of dynamic sealing doors, these characteristics enable synthetic rubber airbags to withstand frequent inflation and deflation operations without being easily damaged, and at the same time, they can resist the friction and impact that may occur during the transportation of materials; polyurethane is a high-performance elastomeric material with extremely high wear resistance, tear resistance and aging resistance. Its excellent physical and mechanical properties enable polyurethane airbags to maintain stable shape and sealing performance when subjected to high pressure and high-speed airflow.

[0041] A smooth coating is set on the contact surface of the airbag. Low-friction, high-wear-resistant materials such as polytetrafluoroethylene (PTFE) and silicone rubber can usually be selected. These materials have excellent lubricity and corrosion resistance. The smooth coating can not only protect the airbag surface from direct wear of the material, but also enable the material to pass through the sealing door more smoothly during the conveying process, avoiding the occurrence of material jamming and blockage.

[0042] As a preferred embodiment of the present application, a buffer guide plate 11 with an inclined mesh belt 30 is provided in the insulation shell 1 to receive the material fed by the multi-stage insulation feeding mechanism and guide it to the mesh belt conveyor, optimize the transition process of the material from the multi-stage insulation feeding mechanism to the mesh belt conveyor, and is suitable for handling fragile materials or materials that need to be gently handled, such as steak and other foods. The inclined buffer guide plate can slow down the speed of the material falling, so that the material contacts the guide plate before contacting the mesh belt, thereby dispersing and absorbing part of the impact force. This can effectively prevent the material from directly hitting the mesh belt and reduce the risk of wear and damage to the mesh belt.

[0043] The buffer guide plate should be made of wear-resistant, corrosion-resistant and easy-to-clean materials, such as stainless steel or food-grade plastic. These materials not only have good physical properties, but also meet the hygiene requirements of food production. In order to improve the sliding efficiency of the material and reduce friction resistance, the surface of the guide plate should be kept smooth and flat. If necessary, a layer of low friction coefficient coating can be applied on the surface.

[0044] In addition, the heat-insulating shell 1 adopts a double-layer structure, and heat-insulating materials such as polyurethane foam or aerogel are filled between the layers. Through the combined effect of the double-layer structure and the heat-insulating materials, the heat-insulating shell can significantly reduce the heat transfer rate, thereby maintaining the internal temperature stable. This is particularly important for quick-freezing production lines.

[0045] As a preferred embodiment of the present application, temperature sensors 211 are provided in different sections of the multi-section heat preservation feeding mechanism to monitor temperature changes, and the dynamic sealing door is maintained based on the temperature change data.

[0046] The temperature sensor can monitor the temperature of each section in real time and transmit the data to the control system. These data are important bases for evaluating the heat preservation effect, predicting potential problems, and adjusting control strategies. By comparing the set temperature with the actual temperature, when the temperature of a certain section shows abnormal fluctuations, the temperature sensor can detect it in time and send out a warning signal so that the staff can quickly take measures to solve the problem. The dynamic maintenance of the sealing door based on temperature changes significantly improves the automation and intelligent level of the production line.

[0047] What is not described in this utility model can be realized by adopting or referring to the existing technology.

[0048] The above is only the specific implementation manner of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by this utility model can easily think of various changes or substitutions thereof, and these should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model shall be subject to the protection scope of the claims.

Claims

1. A food quick freezing device, characterized in that: The invention comprises a closed dynamic insulation feeding device, which comprises an insulation shell and a multi-stage insulation feeding mechanism. The insulation shell is wrapped around the outside of the mesh belt at the inlet / outlet of the spiral quick freezer. The multi-stage insulation feeding mechanism is connected to the entrance of the insulation shell and is used to feed the material into the mesh belt in the insulation shell / or to feed the material on the mesh belt out of the spiral quick freezer. A dynamic sealing door structure is installed in each section of the multi-stage insulation feeding mechanism. The dynamic sealing door can be quickly opened when the material approaches or quickly sealed and closed after the material enters the next section, so as to ensure that during the process of the material entering the insulation shell, at least one dynamic sealing door in the multi-stage insulation feeding mechanism remains sealed to reduce heat exchange between the internal and external environments.

2. A food quick freezing device according to claim 1, characterized in that: The multi-stage heat preservation feeding mechanism comprises a conveying cylinder, and dynamic sealing doors are evenly spaced on the conveying cylinder. The conveying cylinder is tilted and a discharge port at the bottom end is connected to the inlet of the heat preservation shell.

3. A food quick freezing device according to claim 2, characterized in that: The high-end inlet of the conveying cylinder is connected to the discharge port of the screw conveyor, and the rotation speed of the screw conveyor or the pitch of the spiral blade is adjusted to control the amount of material entering the spiral quick-freezing machine.

4. A food quick freezing device according to claim 2, characterized in that: A monitoring device is provided in the conveying cylinder to monitor the position of the material in the conveying cylinder and transmit the data to the control system, and the control system controls the opening or closing of the dynamic sealing door.

5. A food quick freezing device according to claim 1, characterized in that: The dynamic sealing door structure includes a plurality of controllable sealing airbags, each of which is rapidly inflated and deflated by regulating air pressure, thereby controlling the opening and closing of the corresponding section.

6. A food quick freezing device according to claim 5, characterized in that: The airbag is made of high-strength synthetic rubber or polyurethane and a smooth coating is arranged on the contact surface of the airbag.

7. A food quick freezing device according to claim 1, characterized in that: A buffer guide plate of an inclined mesh belt is arranged in the heat-insulating shell to receive the material fed by the multi-stage heat-insulating feeding mechanism and guide it to the mesh belt for conveying.

8. A food quick freezing device according to claim 1, characterized in that: The heat-insulating shell is a double-layer structure, and heat-insulating materials are filled between the layers.

9. A food quick freezing device according to claim 1, characterized in that: Temperature sensors are arranged in different sections of the multi-section heat preservation feeding mechanism to monitor temperature changes, and the dynamic sealing door is maintained based on the temperature change data.

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