Food detection vacuumizing sample storage equipment
By employing dynamic gas-tight sealing technology and a high-pressure inert gas cylinder-driven control airbag seal, combined with real-time pressure regulation via an electronic barometer and solenoid valve, the problem of vacuum reduction caused by sealing ring aging has been solved, thereby improving the reliability and operational efficiency of food testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG ZHONGZHENG FOOD TECH TESTING CO LTD
- Filing Date
- 2025-04-18
- Publication Date
- 2026-04-14
AI Technical Summary
Existing food vacuum sample storage equipment suffers from slow air leakage due to aging of the sealing rings or wear of the interfaces. After long-term storage, the vacuum level decreases, affecting food quality and test results.
It adopts dynamic gas-tight sealing technology, using a high-pressure inert gas cylinder to drive and control the expansion and sealing of the airbag. Combined with an electronic barometer and a solenoid valve for real-time closed-loop pressure regulation, it achieves the switching between vacuuming and feeding modes through a three-way ball valve type conversion controller, replacing the traditional sealing ring.
It improves seal life, reduces the risk of seal failure, reduces sample contamination rate, and significantly enhances the reliability and operational efficiency of food testing.
Smart Images

Figure CN224117952U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of food testing equipment technology, specifically a food testing vacuum sample storage device. Background Technology
[0002] Food safety is a major concern in modern life. Therefore, the results of food safety tests largely determine people's perception of whether a food is safe. Sometimes, in order to preserve samples for a long time during food testing, vacuum processing is often required.
[0003] Currently, food vacuum sample storage equipment mainly adopts three steps: evacuation, sealing, and maintenance. Current food sealing equipment mainly relies on sealing rings to achieve sealing. However, due to the aging of the sealing rings or wear of the interfaces, slow air leakage occurs. After long-term storage, the vacuum level decreases, causing the seal to fail and the food to spoil. In view of this, in-depth research was conducted on the above problems, which led to this case. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a vacuum sample storage device for food testing, which solves the existing technical problems.
[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a food testing vacuum sample storage device, including a storage tank, the storage tank being a cylindrical hollow shell, the top of the storage tank being integrally provided with a cover, the bottom of the storage tank being provided with a discharge port, the discharge port being closed by a valve, the cover being provided with a multi-purpose connector, and the multi-purpose connector being connected to a conversion controller;
[0006] The conversion controller includes a conversion head, which is threadedly connected to a multi-purpose connector. A conversion valve is provided on the conversion head. The conversion valve is a three-way ball valve. One end of the conversion valve is connected to a vacuum pipe, and the other end of the conversion valve is connected to a feed pipe.
[0007] The multi-purpose connector is axially provided with a vacuum sealing plug structure, which includes a vacuum sealing connector. The vacuum sealing connector is located at the top of the multi-purpose connector. A telescopic controller is connected to the vacuum sealing connector. A guide piston is connected to the bottom end of the telescopic controller. A control airbag is integrally provided at the bottom of the guide piston. A high-pressure inert gas cylinder is connected to the top end of the telescopic controller.
[0008] The high-pressure inert gas cylinder, the control airbag, and the inner cavity of the telescopic controller form a passage.
[0009] Preferably, a connection interface is provided on one side of the middle section of the multi-purpose connector, and the connection interface is threadedly connected to the conversion controller.
[0010] Preferably, an electronic barometer is installed on the air supply line of the control airbag, and an electromagnetic valve is installed at the outlet of the high-pressure inert gas cylinder, with the electronic barometer connected to the electromagnetic valve.
[0011] Preferably, the telescopic controller consists of a threaded seat mounted on a vacuum sealing connector, a threaded rod mounted on the threaded seat, and an air intake channel passing through the threaded rod.
[0012] Preferably, the bottom end of the air intake channel extends through the guide piston into the control airbag, and the top end of the air intake channel is provided with a movable joint, which is connected to the high-pressure inert gas cylinder through an air intake pipe.
[0013] Beneficial effects
[0014] This invention provides a vacuum sample storage device for food testing. It offers the following advantages: This device uses dynamic gas-tight sealing technology to replace traditional sealing rings. It controls the expansion and sealing of the air bladder via a high-pressure inert gas cylinder, combined with a real-time closed-loop pressure regulation system using an electronic barometer and solenoid valve. This improves the aging resistance and extends the sealing life compared to conventional rubber sealing rings. A three-way ball valve-type switching controller enables switching between vacuuming and feeding modes, increasing operational efficiency. Compared to solutions relying on static sealing, it reduces the risk of seal failure, decreases sample contamination rates, and significantly improves the reliability of food testing. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of a food testing vacuum sample storage device according to the present invention.
[0016] Figure 2 This is a cross-sectional structural diagram of a food testing vacuum sample storage device according to the present invention.
[0017] Figure 3 This is a partial three-dimensional structural diagram of a food testing vacuum sample storage device according to the present invention.
[0018] In the diagram: 1. Storage tank; 2. Cover; 3. Discharge port; 4. Multi-purpose connector; 5. Conversion controller; 6. Vacuum sealing plug structure; 51. Converter head; 52. Converter valve; 53. Vacuum tube; 54. Feed tube; 61. Vacuum sealing connector; 62. Telescopic controller; 63. Guide piston; 64. Control airbag; 65. High-pressure inert gas cylinder; 66. Electronic barometer; 67. Solenoid valve; 621. Threaded seat; 622. Threaded rod; 623. Air inlet pipe. Detailed Implementation
[0019] 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.
[0020] Please see Figure 1-3 This utility model provides an implementation scheme: In modern food testing, in order to preserve food for a long time, vacuum sample storage equipment is required. Conventional vacuum sample storage equipment mainly uses sealing rings for sealing. However, with long-term use, the sealing rings are very prone to aging, resulting in poor sealing, food contamination, and affecting test results.
[0021] To address the aforementioned issues, this application discloses a food testing vacuum sample storage device, comprising a storage tank 1, which is a cylindrical hollow shell used as a food storage container. A cover 2 is integrally installed on the top of the storage tank 1 to seal the top. A discharge port 3 is located at the bottom of the storage tank 1 and is closed by a valve. The valve can be switched to open and close the discharge port 3 to discharge the material. A multi-purpose connector 4 is installed on the cover 2, and a conversion controller 5 is connected to the multi-purpose connector 4. The conversion controller 5 can switch between vacuuming and feeding modes. The multi-purpose connector 4 is used to connect the conversion controller 5 and a vacuum sealing plug structure 6 to achieve the functions of feeding, vacuuming, and sealing.
[0022] According to the instruction manual Figure 1-3 It can be seen that the above-mentioned conversion controller 5 includes a conversion head 51, which is threadedly connected to the multi-purpose connector 4. A conversion valve 52 is provided on the conversion head 51. The conversion valve 52 is a three-way ball valve. One end of the conversion valve 52 is connected to the vacuum tube 53, and the other end of the conversion valve 52 is connected to the feed tube 54.
[0023] In the specific implementation process, the converter 51 is connected to the multi-purpose connector 4. The converter 51 is equipped with a three-way ball valve. By switching the different conduction paths of the conversion valve 52, the converter 51 can be connected to the vacuum tube 53 or the feeding tube 54 respectively. When vacuuming is required, the vacuum tube 53 is connected to the external vacuuming equipment. The vacuuming equipment connects the converter 51, the multi-purpose connector 4 and the storage tank 1 to form a vacuuming system. Then, vacuuming is performed. After vacuuming is completed, the feeding tube 54 is connected to the external food storage equipment. Then, the conversion valve 52 is used to connect the feeding tube 54 to the storage tank 1. Then, the food is sent into the storage tank 1 by using the vacuum action and the pump action.
[0024] According to the instruction manual Figure 1-3 It can be seen that the multi-purpose connector 4 is provided with a vacuum sealing plug structure 6 in the axial direction. The vacuum sealing plug structure 6 includes a vacuum sealing connector 61. The vacuum sealing connector 61 is provided at the top of the multi-purpose connector 4. A telescopic controller 62 is connected to the vacuum sealing connector 61. A guide piston 63 is connected to the bottom end of the telescopic controller 62. A control airbag 64 is integrally provided at the bottom of the guide piston 63. A high-pressure inert gas cylinder 65 is connected to the top end of the telescopic controller 62.
[0025] In the specific implementation process, after the food filling is completed, the vacuum sealing plug structure 6 can be used to seal the multi-purpose connector 4 to achieve vacuum sealing. Specifically, the vacuum sealing connector 61 is axially connected to the multi-purpose connector 4. The telescopic controller 62 on the vacuum sealing connector 61 can control the guide piston 63 to drive the control airbag 64 to move. The telescopic controller 62 lowers the control airbag 64 into the multi-purpose connector 4, opens the high-pressure gas cylinder to allow high-pressure air to enter the control airbag 64, and causes the airbag to expand and seal the multi-purpose connector 4 to complete the vacuum seal. This requires the high-pressure inert gas cylinder 65 to form a passage with the control airbag 64 and the inner cavity of the telescopic controller 62.
[0026] As a preferred option, the multi-purpose connector 4 is further provided with a connection interface on one side of the middle section. The connection interface is threadedly connected to the conversion controller 5, which facilitates the disassembly of the conversion controller 5 for inspection and cleaning.
[0027] As a preferred option, an electronic barometer 66 is installed on the air supply line of the control airbag 64, and an electromagnetic valve 67 is installed at the outlet of the high-pressure inert gas cylinder 65. The electronic barometer 66 is connected to the electromagnetic valve 67. After the control airbag 64 seals the multi-purpose connector 4, the gas pressure inside the control airbag 64 is kept constant. The pressure inside the control airbag 64 is detected by the electronic barometer 66, and air is replenished in conjunction with the electromagnetic valve 67 to prevent leakage of the control airbag 64 and thus avoid sealing failure.
[0028] As a preferred embodiment, the telescopic controller 62 further comprises a threaded seat 621 mounted on the vacuum sealing connector 61, a threaded rod 622 mounted on the threaded seat 621, and an air intake channel passing through the threaded rod 622. By engaging the threaded rod 622 with the threaded seat 621, the linear movement of the threaded rod 622 can be controlled, thereby adjusting the position of the guide piston 63, and thus adjusting the position of the control airbag 64.
[0029] As a preferred option, the bottom end of the air intake channel extends through the guide piston 63 into the control airbag 64, and the top end of the air intake channel is provided with a movable joint, which is connected to the high-pressure inert gas cylinder 65 through the air intake pipe 623.
[0030] In summary, this food testing vacuum sample storage device uses dynamic gas-tight sealing technology to replace traditional sealing rings. It uses a high-pressure inert gas cylinder 65 to drive and control the expansion and sealing of the air bladder 64. Combined with an electronic barometer 66 and a solenoid valve for real-time closed-loop pressure regulation, it offers improved aging resistance and a longer sealing life compared to conventional rubber sealing rings. The device also features a three-way ball valve-type switching controller 5 to switch between vacuuming and feeding modes, improving operational efficiency. Compared to solutions relying on static sealing, it reduces the risk of seal failure, decreases sample contamination rates, and significantly enhances the reliability of food testing.
[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A food testing vacuum sample storage device, comprising a storage tank (1), wherein the storage tank (1) is a cylindrical hollow shell, a cover (2) is integrally provided on the top of the storage tank (1), and a discharge port (3) is provided at the bottom of the storage tank (1), the discharge port (3) being closed by a valve, characterized in that, The cover (2) is provided with a multi-purpose connector (4), and a conversion controller (5) is connected to the multi-purpose connector (4). The conversion controller (5) includes a conversion head (51), which is threadedly connected to a multi-purpose connector (4). A conversion valve (52) is provided on the conversion head (51). The conversion valve (52) is a three-way ball valve. One end of the conversion valve (52) is connected to a vacuum tube (53), and the other end of the conversion valve (52) is connected to a feed tube (54). The multi-purpose connector (4) is provided with a vacuum sealing plug structure (6) in the axial direction. The vacuum sealing plug structure (6) includes a vacuum plug connector (61). The vacuum plug connector (61) is provided at the top of the multi-purpose connector (4). A telescopic controller (62) is connected to the vacuum plug connector (61). A guide piston (63) is connected to the bottom end of the telescopic controller (62). A control airbag (64) is integrally provided at the bottom of the guide piston (63). A high-pressure inert gas cylinder (65) is connected to the top end of the telescopic controller (62). The high-pressure inert gas cylinder (65) forms a passage with the control airbag (64) and the inner cavity of the telescopic controller (62).
2. The food testing vacuum sample storage device according to claim 1, characterized in that, The multi-purpose connector (4) has a connection interface on one side of its middle section, and the connection interface is threadedly connected to the conversion controller (5).
3. The food testing vacuum sample storage device according to claim 2, characterized in that, An electronic barometer (66) is installed on the air supply line of the control airbag (64), and an electromagnetic valve (67) is installed at the outlet of the high-pressure inert gas cylinder (65). The electronic barometer (66) is connected to the electromagnetic valve (67).
4. The food testing vacuum sample storage device according to claim 3, characterized in that, The telescopic controller (62) consists of a threaded seat (621) installed on a vacuum sealing connector (61), a threaded rod (622) installed on the threaded seat (621), and an air intake channel passing through the threaded rod (622).
5. The food testing vacuum sample storage device according to claim 4, characterized in that, The bottom end of the air intake channel extends through the guide piston (63) into the control airbag (64), and the top end of the air intake channel is provided with a movable joint, which is connected to the high-pressure inert gas cylinder (65) through the air intake pipe (623).