Negative-pressure sterile weighing device for food outer package
By combining a negative pressure aseptic weighing device with ultraviolet irradiation and a stirring component, the problem of contamination during food packaging is solved, achieving efficient weighing and filling in an aseptic environment, and ensuring food safety and quality stability.
Patent Information
- Application Number
- CN202423255542.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-28
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-28
AI Technical Summary
Existing aseptic weighing devices for food outer packaging are not efficient enough in the sterilization and filling processes, and the existing equipment does not demonstrate the integration of sterilization and filling, which makes food easily contaminated during the packaging process.
The negative pressure aseptic weighing device, combined with ultraviolet irradiation and negative pressure technology, ensures that food is weighed and filled in an aseptic environment through stirring components and pressure reduction mechanisms, preventing external contaminants from entering.
It enables efficient weighing and filling of food in a sterile environment, improving food safety and quality stability, reducing the risk of bacterial contamination, and extending food shelf life.
Smart Images
Figure CN223623686U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of food packaging technology, and in particular to a negative pressure aseptic weighing device for food outer packaging. Background Technology
[0002] In daily life, as people's living standards improve and their attention to food safety increases, the market demands higher and higher standards of aseptic food production. Consumers are increasingly inclined to purchase foods produced and packaged in aseptic environments to ensure food quality and safety. In the food processing industry, to meet market demands and enhance product competitiveness, companies are also placing greater emphasis on aseptic operations during food production, especially in the food packaging stage. This necessitates devices capable of accurate weighing in aseptic environments to guarantee the quality and hygiene standards of food packaging.
[0003] The aseptic weighing device for food outer packaging mainly consists of an aseptic operating chamber and a weighing device. The aseptic operating chamber creates a sterile environment through ultraviolet irradiation, and the weighing device, an electronic balance, is placed inside to accurately measure the weight of the food. During operation, the food sample enters the aseptic operating chamber via a transfer device, and the operator uses tools to place the sample on the electronic balance for weighing. The entire process ensures that the food is weighed in a sterile environment, avoiding microbial contamination.
[0004] In existing technologies, only the weighing of packaging is performed, and subsequent processes do not involve disinfection and sterilization. This leads to the contamination of food filling in the packaging, highlighting the importance of integrated filling. Traditional equipment that only uses ultraviolet irradiation for sterilization is insufficient. Therefore, a negative pressure aseptic weighing device for food outer packaging is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a negative pressure aseptic weighing device for food outer packaging, which aims to improve the problems of integrated weighing and filling under aseptic conditions and inefficient sterilization in the prior art.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a negative pressure aseptic weighing device for food outer packaging, comprising a protective shell, a filling mechanism provided on the top inner side of the protective shell, a protective door provided on the outer side of the protective shell, a weighing platform provided on the bottom inner side of the protective shell, multiple ultraviolet lamps provided on both sides inside the protective shell, and a pressure reducing mechanism provided on the rear inner side of the protective shell.
[0007] The filling mechanism includes a first outer shell, the upper outer side of which is installed on the inner top of the protective shell. A stirring assembly is provided on the top of the first outer shell, a fixed frame is rotatably connected to the outer side of the stirring assembly, a threaded plate is provided on the bottom outer side of the stirring assembly, a connecting block is provided on the outer side of the first outer shell, i.e., the top of the protective shell, and a second outer shell is fixedly connected to the bottom of the first outer shell. A support plate is provided on the rear side of the second outer shell, and a rotating assembly is provided on the top of the support plate.
[0008] As a further description of the above technical solution: the stirring assembly includes a motor, the bottom of which is mounted on the top of the housing, a rotating shaft is provided at the fixed output end of the motor, and a rotating frame is provided on the outside of the rotating shaft;
[0009] As a further description of the above technical solution: the outer side of the fixing frame is fixedly installed on the inner side of the outer casing, the outer side of the rotating shaft is fixedly connected to the inner side of the threaded plate, and the outer side of the threaded plate is rotatably connected to the inner side of the outer casing.
[0010] As a further description of the above technical solution: the rotating assembly includes a second motor, the bottom of which is fixedly connected to the top of the support plate, and a rotating column is fixedly connected to the output end of the second motor;
[0011] As a further description of the above technical solution: the outer side of the support plate, that is, the side away from the second outer shell, is installed on the inner rear side of the protective shell, and the top of the first outer shell is provided with an entrance;
[0012] As a further description of the above technical solution: the pressure reduction mechanism includes a blower, the outer side of which is fixedly connected to the inner rear side of the protective shell, a motor is fixedly connected to the rear side of the blower, an air inlet pipe is provided at the bottom of the blower, and a pump body is provided at one end of the air inlet pipe, i.e. the end away from the blower.
[0013] As a further description of the above technical solution: a water ring is provided on the inner side of the pump body, and an impeller is rotatably connected to the inner side of the pump body;
[0014] As a further description of the above technical solution: an exhaust pipe is fixedly connected to the upper outer side of the pump body, and one end of the exhaust pipe, that is, the end away from the pump body, is fixedly connected to the inner rear part of the protective shell.
[0015] This utility model has the following beneficial effects:
[0016] 1. In this utility model, the stirring is carried out by a motor-driven rotating shaft and rotating frame, and the rotation of the threaded plate and rotating column makes the transfer of food during the packaging process smoother, improves the packaging efficiency, and the uniform stirring and distribution makes the food content in each package more uniform, ensuring product consistency. The re-weighing ensures that the food weight meets the standard requirements, improves the quality stability of the product, reduces the risk of bacterial contamination, and provides consumers with safer food.
[0017] 2. In this utility model, the motor drives the blower blades to rotate, drawing air from inside the protective shell into the pump body. The motor drives the impeller, and with the help of the water ring, the air is discharged to the exhaust pipe, thereby creating a negative pressure inside the protective shell. In food packaging, this negative pressure can prevent untreated air and contaminants such as bacteria from entering. Combined with ultraviolet irradiation, it can extend the shelf life of food and improve food safety. Attached Figure Description
[0018] Figure 1 This is a three-dimensional schematic diagram of a negative pressure aseptic weighing device for food outer packaging proposed in this utility model;
[0019] Figure 2 This is a schematic diagram of the structure of the ultraviolet lamp of a negative pressure aseptic weighing device for food outer packaging proposed in this utility model.
[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0021] Figure 4 This is a schematic diagram of the structure of the support plate of a negative pressure aseptic weighing device for food outer packaging proposed in this utility model;
[0022] Figure 5 This is a schematic diagram of the blower of a negative pressure aseptic weighing device for food outer packaging proposed in this utility model.
[0023] Legend:
[0024] 1. Protective shell; 2. Protective door; 3. Weighing platform; 4. Filling mechanism; 401. Outer shell one; 402. Motor one; 403. Rotating shaft; 404. Fixing frame; 405. Connecting block; 406. Rotating frame; 407. Threaded plate; 408. Outer shell two; 409. Rotating column; 410. Support plate; 411. Motor two; 412. Inlet; 5. Ultraviolet lamp; 6. Pressure reducing mechanism; 601. Blower; 602. Motor three; 603. Air inlet pipe; 604. Pump body; 605. Impeller; 606. Water ring; 607. Exhaust pipe. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] Reference Figures 2 to 4 This utility model provides an embodiment of a negative pressure aseptic weighing device for food outer packaging, including a protective shell 1. The protective shell 1 can isolate the internal weighing area from the external environment, preventing external bacteria, dust and other contaminants from entering. It can ensure that under negative pressure, outside air cannot enter the interior of the protective shell 1. A filling mechanism 4 is provided on the top inner side of the protective shell 1, and a protective door 2 is provided on the outer side of the protective shell 1. The protective door 2 is made of glass to facilitate observation of the internal situation, making it more convenient to place and take out the food outer packaging. A weighing platform 3 is provided on the bottom inner side of the protective shell 1. The weighing platform 3 accurately measures the weight of the food outer packaging. Through a high-precision weighing sensor, the weight of the food outer packaging can be accurately converted into an electrical signal and transmitted to the display screen on the outer side of the protective shell 1. Multiple ultraviolet lamps 5 are provided on both sides of the interior of the protective shell 1. The ultraviolet lamps 5 use the bactericidal effect of ultraviolet light to disinfect the air inside the protective shell 1 and the food outer packaging. Ultraviolet light can destroy bacteria, viruses and other microorganisms, causing them to lose their ability to reproduce and survive. A pressure reducing mechanism 6 is provided on the rear inner side of the protective shell 1.
[0027] The filling mechanism 4 includes a first outer shell 401, which supports and protects the internal components. 401 provides installation space for components such as the stirring assembly and the threaded plate. The upper outer side of the first outer shell 401 is installed on the inner top of the protective shell 1. The stirring assembly is installed on the top of the first outer shell 401. A fixing frame 404 is rotatably connected to the outer side of the stirring assembly. The fixing frame 404 provides stable support for the rotating shaft 403, ensuring that the rotating shaft 403 will not shake or deviate during rotation. A threaded plate 407 is installed at the bottom outer side of the stirring assembly. 407 transports food from the upper part to the lower part of the first outer shell. A connecting block 405 is installed on the outer side of the first outer shell 401, i.e., the top of the protective shell 1. The bottom of the first outer shell 401 is fixedly connected to a second outer shell 408. The second outer shell 408 is an internal space used to hold food and also provides installation space for the rotating assembly. A support plate 410 is provided on the rear side of the outer casing 408. The support plate 410 provides stable support for the motor 411 and the rotating column. A rotating assembly is provided on the top of the support plate 410.
[0028] The mixing assembly includes a first motor 402, the bottom of which is mounted on the top of a first housing 401. A rotating shaft 403 is mounted on the fixed output end of the first motor 402, driving the rotating shaft 403 to rotate. A rotating frame 406 is mounted on the outer side of the rotating shaft 403, transmitting the rotational power from the first motor to the rotating frame 406, enabling the rotating frame 406 to mix the food. The outer side of a fixed frame 404 is fixedly mounted on the inner side of the first housing 401. The outer side of the rotating shaft 403 is fixedly connected to the inner side of a threaded plate 407, which is rotatably connected to the inner side of the first housing 401. The rotating assembly includes a second motor 411, the bottom of which is fixedly connected to the top of a support plate 410. A rotating column 409 is fixedly connected to the output end of the second motor 411, driving the column 409 to rotate. The outer side of the support plate 410, that is, the side away from the outer shell 408, is installed on the inner rear side of the protective shell 1. The top of the outer shell 401 is provided with an inlet 412, which distributes the food evenly under the drive of the motor 411.
[0029] Reference Figure 1 , Figure 4 , Figure 5 The pressure-reducing mechanism 6 includes a blower 601, which is fixedly connected to the rear side of the inner casing 1. A motor 602 is fixedly connected to the rear side of the blower 601, which drives the internal fan blades of the blower 601 to rotate. An air inlet pipe 603 is provided at the bottom of the blower 601, which guides the air in the protective casing 1 to the pump body 604. The blower 601 draws the air in the protective casing 1 into the pump body 604. The pump body 604 is provided at one end of the air inlet pipe 603, which is away from the blower 601. The pump body 604 compresses and discharges the air delivered by the air inlet pipe. The inner side of the pump body 604 is provided with... A water ring 606 is provided to form a sealed environment inside the pump body 604 to prevent air leakage. An impeller 605 is rotatably connected to the inner side of the pump body 604. The impeller 605 rotates under the drive of the motor, generating a strong airflow that draws air into the pump body 604. After compression, the air is discharged to the exhaust pipe. The speed of the impeller and the shape of the blades directly affect the working efficiency and pressure reduction effect of the pump body 604. An exhaust pipe 607 is fixedly connected to the upper outer side of the pump body 604. The exhaust pipe 607 guides the air discharged from the pump body 604 to the outside. One end of the exhaust pipe 607, that is, the end away from the pump body 604, is fixedly connected to the inner rear part of the protective shell 1.
[0030] Working principle: The person measuring places the food packaging on the weighing platform 3 for measurement. The display screen on the outside of the protective shell 1 displays the net weight of the empty packaging bag. Under the irradiation of the ultraviolet lamp 5, the food packaging bag is sterilized while being weighed to ensure food safety.
[0031] The food to be packaged is put into the inlet 412. The motor 402 drives the rotating shaft 403 to rotate inside the outer shell 401 under the constraint of the fixed frame 404. When the food reaches the middle of the outer shell 401, the rotating shaft 403 drives the rotating frame 406 to rotate, which stirs the food evenly and makes the food transport smoother. When the food reaches the bottom of the outer shell 401, the special shape of the threaded plate 407 prevents it from blocking the bottom of the outer shell 401. The food reaches the second outer shell 408. The motor 411 supported by the support plate 410 drives the rotating column 409 to rotate inside the second outer shell 408, so that the food is evenly distributed at the bottom of the second outer shell 408. Then, the food is filled into different sizes of packaging bags through the different discharge ports at the bottom of the second outer shell 408. After filling, the food is weighed again to ensure the quality standard of the food and avoid bacterial contamination after packaging and weighing.
[0032] The blower 601 is driven by motor 602 to rotate the fan blades inside the blower, drawing air from the protective shell 1 into the air inlet pipe 603. The air is then transferred through the air inlet pipe 603 to the pump body 604. Inside the pump body 604, the motor drives the impeller 605 to rotate, passing through the water ring 606 to the exhaust pipe 607. The air is then discharged from the exhaust pipe 607, reducing the air pressure inside the blower 601 and effectively preventing bacterial growth. Combined with the irradiation of the ultraviolet lamp 5, this achieves a highly efficient sterilization effect.
[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A negative pressure aseptic weighing device for food outer packaging, comprising a protective shell (1), characterized in that: The protective shell (1) has a filling mechanism (4) on the top inner side, a protective door (2) on the outer side, a weighing platform (3) on the bottom inner side, multiple ultraviolet lamps (5) on both sides inside the protective shell (1), and a pressure reducing mechanism (6) on the rear inner side of the protective shell (1). The filling mechanism (4) includes a first outer shell (401), the upper outer side of which is installed on the inner side of the top of the protective shell (1). A stirring assembly is provided on the top of the first outer shell (401), and a fixing frame (404) is rotatably connected to the outer side of the stirring assembly. A threaded plate (407) is provided on the bottom of the outer side of the stirring assembly. A connecting block (405) is provided on the outer side of the first outer shell (401), i.e., the top of the protective shell (1). A second outer shell (408) is fixedly connected to the bottom of the first outer shell (401). A support plate (410) is provided on the rear side of the second outer shell (408), and a rotating assembly is provided on the top of the support plate (410).
2. The negative pressure aseptic weighing device for food outer packaging according to claim 1, characterized in that: The stirring assembly includes a motor (402), the bottom of which is mounted on the top of the outer casing (401). A rotating shaft (403) is provided at the fixed output end of the motor (402), and a rotating frame (406) is provided on the outside of the rotating shaft (403).
3. The negative pressure aseptic weighing device for food outer packaging according to claim 2, characterized in that: The outer side of the fixing bracket (404) is fixedly installed on the inner side of the outer shell (401), the outer side of the rotating shaft (403) is fixedly connected to the inner side of the threaded plate (407), and the outer side of the threaded plate (407) is rotatably connected to the inner side of the outer shell (401).
4. The negative pressure aseptic weighing device for food outer packaging according to claim 2, characterized in that: The rotating assembly includes a second motor (411), the bottom of which is fixedly connected to the top of the support plate (410), and a rotating column (409) is fixedly connected to the output end of the second motor (411).
5. The negative pressure aseptic weighing device for food outer packaging according to claim 4, characterized in that: The outer side of the support plate (410), that is, the side away from the second outer shell (408), is installed on the inner rear side of the protective shell (1), and the top of the first outer shell (401) is provided with an entrance (412).
6. The negative pressure aseptic weighing device for food outer packaging according to claim 1, characterized in that: The pressure reducing mechanism (6) includes a blower (601), the outer side of which is fixedly connected to the inner rear side of the protective shell (1), a motor (602) is fixedly connected to the rear side of the blower (601), an air inlet pipe (603) is provided at the bottom of the blower (601), and a pump body (604) is provided at one end of the air inlet pipe (603), that is, the end away from the blower (601).
7. The negative pressure aseptic weighing device for food outer packaging according to claim 6, characterized in that: A water ring (606) is provided on the inner side of the pump body (604), and an impeller (605) is rotatably connected to the inner side of the pump body (604).
8. The negative pressure aseptic weighing device for food outer packaging according to claim 7, characterized in that: An exhaust pipe (607) is fixedly connected to the upper outer side of the pump body (604), and one end of the exhaust pipe (607), that is, the end away from the pump body (604), is fixedly connected to the inner rear part of the protective shell (1).