Sterile sampling device for food detection

Abstract

The utility model provides a sterile sampling device for food detection, which relates to the technical field of food detection and comprises an exhaust pipe, a first communicating pipe is fixedly communicated with the center of the bottom of the exhaust pipe, a second communicating pipe is inserted between the inner surface walls of the first communicating pipe, and a one-way valve is mounted between the inner surface walls of the second communicating pipe. The bottom of the second communicating pipe is fixedly communicated with a sample pipe, and the center of the bottom of the sample pipe is fixedly communicated with a liquid suction pipe. According to the liquid food sampling device, after liquid food sampling is completed, the second sealing cover is installed at the bottom end of the liquid suction pipe, then the two long buckles and the short buckles are pinched to be separated, the sample pipe and the air suction pipe can be separated by pulling the sample pipe downwards, and then the sample pipe containing the liquid food can be directly submitted for inspection; according to the design, the exhaust pipe and the sample pipe are separated, so that the problem that the accuracy of a detection result is influenced due to the fact that qualified samples are polluted by defective samples can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of food detection, in particular to a sterile sampling device for food detection. Background Art

[0002] With the rapid development of the economy and the continuous progress of society, people's living standards have been increasing day by day, and the requirements for food safety have also become higher and higher, especially for liquid foods. And the sampler is one of the most commonly used instruments in the detection process of liquid foods.

[0003] In the prior art, such as Chinese Patent Publication No. CN210638955U, there is disclosed a sterile sampling device for liquid food detection, including a liquid sampling barrel in the structure of a syringe. One end of the bottom of the liquid sampling barrel is provided with a needle head seat. A piston rod is arranged inside the liquid sampling barrel. One end of the liquid sampling barrel away from the needle head seat is provided with a sealing piece. One end of the piston rod passing through the top of the sealing piece is provided with a handle. One end of the piston rod located at the bottom inner cavity of the liquid sampling barrel is provided with a piston. A vent hole is opened at the position of the outer wall of the needle head seat close to one end of the liquid sampling barrel. The liquid sampling barrel is also provided with a needle head cooperating with the needle head seat at one end of the needle head seat, which solves the problems in the prior art that it is difficult to control the amount of the detected food solution extracted and pushed out, and at the same time, the liquid remaining at the position of the needle head seat cannot be discharged in time.

[0004] Although the above patent solves the problems that it is difficult to control the amount of the detected food solution extracted and pushed out, and at the same time, the liquid remaining at the position of the needle head seat cannot be discharged in time, however, after the sampling device extracts a sample of liquid food, it needs to be injected into a sample tube, and then the sample extraction of different liquid foods is repeated. During this process, different liquid foods will enter the inside of the sampling device. Therefore, the problematic samples remaining inside the sampling device will contaminate the qualified samples, affecting the accuracy of the detection results. Therefore, in view of the above problems, we propose a new sterile sampling device for food detection. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the problem in the prior art that after the sampling device extracts a sample of liquid food, it needs to be injected into a sample tube, and then the sample extraction of different liquid foods is repeated. During this process, different liquid foods will enter the inside of the sampling device. Therefore, the problematic samples remaining inside the sampling device will contaminate the qualified samples, affecting the accuracy of the detection results, and to propose a sterile sampling device for food detection.

[0006] To achieve the above object, the present utility model adopts the following technical solution: a sterile sampling device for food detection, including an air extraction pipe, a first communication pipe is fixedly connected and communicated at the center of the bottom of the air extraction pipe, a second communication pipe is inserted between the inner walls of the first communication pipe, a one-way valve is installed between the inner walls of the second communication pipe, a sample pipe is fixedly connected and communicated at the bottom of the second communication pipe, a liquid suction pipe is fixedly connected and communicated at the center of the bottom of the sample pipe, short buckles are symmetrically and fixedly connected near the two side edges at the top of the sample pipe, long buckles are symmetrically and fixedly connected near the two side edges at the bottom of the air extraction pipe, and the long buckles and the short buckles are snap-connected.

[0007] Preferably, a piston is arranged between the inner walls of the air extraction pipe, and a connecting rod is fixedly connected to the center of the top of the piston.

[0008] Preferably, the top end of the connecting rod is fixedly connected with a pull handle, and hanging ears are symmetrically and fixedly connected to the outer surface of the air extraction pipe near the top.

[0009] Preferably, the bottom end of the liquid suction pipe is threadedly connected with a second sealing cover.

[0010] Preferably, an air inlet pipe is fixedly connected and communicated at the position near the front side at the top of the sample pipe, and the top end of the air inlet pipe is threadedly connected with a first sealing cover.

[0011] Preferably, a socket is fixedly connected to the position near the middle at the top of the sample pipe, and a positioning column is fixedly connected to the position near the middle at the bottom of the air extraction pipe.

[0012] Preferably, the bottom end of the positioning column is inserted and connected with the socket.

[0013] Compared with the prior art, the advantages and positive effects of the present utility model are as follows.

[0014] 1. In the present utility model, after the sampling of liquid food by this device is completed, the second sealing cover is installed at the bottom end of the liquid suction pipe, and then the two long buckles are pinched to separate them from the short buckles and the sample pipe is pulled downward, so that the sample pipe and the air extraction pipe can be separated. Then, the sample pipe filled with liquid food can be directly sent for inspection. This design can effectively solve the problem that the problem sample contaminates the qualified sample and affects the accuracy of the detection result by making the air extraction pipe and the sample pipe into a detachable design.

[0015] 2. In the present utility model, when it is necessary to take out the liquid food inside the sample pipe, by rotating and disassembling the first sealing cover and the second sealing cover, air can enter the sample pipe from the air inlet pipe, so that the sample is discharged from the second communication pipe under the action of gravity. This design has a clever structure, the device is small and has high practicability. Description of the Drawings

[0016] Figure 1 The present utility model provides a three-dimensional view of a sterile sampling device for food detection;

[0017] Figure 2 The present utility model provides a schematic structural view of an air extraction pipe of a sterile sampling device for food detection;

[0018] Figure 3 The present utility model provides a schematic structural view of a sample tube of a sterile sampling device for food detection;

[0019] Figure 4 The present utility model provides a schematic structural view of the sample tube from another angle of a sterile sampling device for food detection.

[0020] Legend: 1. Air extraction pipe; 11. Hanging ear; 12. First connecting pipe; 2. Piston; 21. Connecting rod; 22. Pull handle; 3. Positioning column; 31. Long buckle; 4. Sample tube; 41. Second connecting pipe; 42. Liquid suction pipe; 5. Check valve; 51. Intake pipe; 52. First sealing cover; 6. Insert sleeve; 61. Short buckle; 62. Second sealing cover. Detailed implementation manners

[0021] In order to more clearly understand the above-mentioned objects, features and advantages of the present utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0022] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the limitations of the specific embodiments disclosed in the following specification.

[0023] Embodiment 1, as Figures 1-4 shown, the present utility model provides a sterile sampling device for food detection, including an air extraction pipe 1. A first connecting pipe 12 is fixedly connected to the center of the bottom of the air extraction pipe 1. A second connecting pipe 41 is inserted between the inner walls of the first connecting pipe 12. A check valve 5 is installed between the inner walls of the second connecting pipe 41. The bottom of the second connecting pipe 41 is fixedly connected to a sample tube 4. A liquid suction pipe 42 is fixedly connected to the center of the bottom of the sample tube 4. Short buckles 61 are symmetrically and fixedly connected to the top of the sample tube 4 near both side edges. Long buckles 31 are symmetrically and fixedly connected to the bottom of the air extraction pipe 1 near both side edges. The long buckles 31 and the short buckles 61 are snap-connected. A piston 2 is arranged between the inner walls of the air extraction pipe 1. A connecting rod 21 is fixedly connected to the center of the top of the piston 2. The top end of the connecting rod 21 is fixedly connected to a pull handle 22. Hanging ears 11 are symmetrically and fixedly connected to the outer surface of the air extraction pipe 1 near the top. The bottom end of the liquid suction pipe 42 is threadedly connected to a second sealing cover 62.

[0024] The effect achieved by the entire Example 1 is that when using this device to sample liquid food, first place the bottom end of the liquid suction pipe 42 in the liquid food, and then hold the air extraction pipe 1 and pull the pull handle 22. At this time, the pull handle 22 will drive the connecting rod 21 and the piston 2 to move upward. At this time, the space below the piston 2 inside the air extraction pipe 1 increases, gradually pumping the air inside the sample tube 4 into the air extraction pipe 1 to form a negative pressure state. Under the action of the negative pressure, the liquid food will enter the inside of the sample tube 4 through the liquid suction pipe 42 to complete the sampling. After the sampling of the liquid food is completed by this device, install the second sealing cover 62 at the bottom end of the liquid suction pipe 42. Then, by pinching the two long buckles 31 inward with the index finger and thumb, the long buckles 31 and the short buckles 61 can be separated. Subsequently, by pulling down the sample tube 4, the second connecting pipe 41 at the top of the sample tube 4 can be disengaged from the inside of the first connecting pipe 12 at the bottom of the air extraction pipe 1, so as to achieve the purpose of removing the sample tube 4. At this time, since a one-way valve 5 is provided inside the second connecting pipe 41 at the top of the sample tube 4, the sample cannot pass through, and the lower liquid suction pipe 42 is blocked by the second sealing cover 62. Furthermore, the sample tube 4 containing the liquid food can be directly sent for inspection. This design, by making the air extraction pipe 1 and the sample tube 4 into a detachable design, can effectively solve the problem that the problem sample contaminates the qualified sample and affects the accuracy of the test result. Moreover, the structure of the sample tube 4 is simple and the manufacturing cost is low, which is conducive to large-scale promotion and use in the market. At the same time, the snap connection of the long buckles 31 and the short buckles 61 and the insertion connection of the second connecting pipe 41 and the first connecting pipe 12 also make the disassembly and replacement of the sample tube 4 convenient.

[0025] Example 2, as Figures 1-4 shown, a gas inlet pipe 51 is fixedly connected to the top of the sample tube 4 near the front side. The top end of the gas inlet pipe 51 is threadedly connected with a first sealing cover 52. A socket 6 is fixedly connected to the top of the sample tube 4 near the middle. A positioning post 3 is fixedly connected to the bottom of the air extraction pipe 1 near the middle. The bottom end of the positioning post 3 is inserted and connected with the socket 6.

[0026] The effect achieved by the entire Example 2 is that when it is necessary to take out the liquid food inside the sample tube 4, by rotating and removing the first sealing cover 52 and the second sealing cover 62, air can enter the inside of the sample tube 4 from the gas inlet pipe 51, so that the sample is discharged from the second connecting pipe 41 under the action of gravity. This design has a clever structure, a small device, and high practicability. Through the cooperation of the positioning post 3 and the socket 6, a limiting effect is achieved, so that when the air extraction pipe 1 and the sample tube 4 are connected, the positions of the long buckles 31 and the short buckles 61 can be accurately aligned, and the operation is relatively convenient.

[0027] Working principle: When using this device to sample liquid food, first place the bottom end of the liquid suction pipe 42 into the liquid food, then hold the air extraction pipe 1 and pull the handle 22. At this time, the handle 22 will drive the connecting rod 21 and the piston 2 to move upward. At this time, the space below the piston 2 inside the air extraction pipe 1 increases, gradually sucking the air inside the sample pipe 4 into the air extraction pipe 1 to form a negative pressure state. Under the action of the negative pressure, the liquid food will enter the inside of the sample pipe 4 through the liquid suction pipe 42 to complete the sampling. After sampling the liquid food through this device, install the second sealing cover 62 at the bottom end of the liquid suction pipe 42. Then, by pinching the two long buckles 31 inward with the index finger and thumb, the long buckles 31 and the short buckles 61 can be separated. Subsequently, by pulling down the sample pipe 4, the second connecting pipe 41 at the top of the sample pipe 4 can be disengaged from the inside of the first connecting pipe 12 at the bottom of the air extraction pipe 1, so as to achieve the purpose of removing the sample pipe 4. At this time, since a one-way valve 5 is provided inside the second connecting pipe 41 at the top of the sample pipe 4, the sample cannot pass through, and the lower liquid suction pipe 42 is blocked by the second sealing cover 62. Thus, the sample pipe 4 containing the liquid food can be directly sent for inspection. This design, by making the air extraction pipe 1 and the sample pipe 4 into a detachable design, can effectively solve the problem that the problem sample contaminates the qualified sample and affects the accuracy of the test result. When it is necessary to take out the liquid food inside the sample pipe 4, by rotating and removing the first sealing cover 52 and the second sealing cover 62, air can enter the inside of the sample pipe 4 from the air inlet pipe 51, so that the sample is discharged from the second connecting pipe 41 under the action of gravity. This design has a clever structure, a small device, and high practicability.

[0028] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A sterile sampling device for food testing, comprising a suction tube (1), characterized in that: The center of the bottom of the air extraction pipe (1) is fixedly connected to a first connecting pipe (12); a second connecting pipe (41) is inserted between the inner walls of the first connecting pipe (12); a one-way valve (5) is installed between the inner walls of the second connecting pipe (41); the bottom of the second connecting pipe (41) is fixedly connected to a sample tube (4); the center of the bottom of the sample tube (4) is fixedly connected to a liquid pipette (42); the top of the sample tube (4) is symmetrically fixedly connected to short clips (61) near the two side edges; the bottom of the air extraction pipe (1) is symmetrically fixedly connected to long clips (31) near the two side edges; the long clips (31) and the short clips (61) are snap-connected.

2. The aseptic sampling device for food testing according to claim 1, characterized in that: A piston (2) is arranged between the inner surface walls of the exhaust pipe (1), and a connecting rod (21) is fixedly connected to the center of the top of the piston (2).

3. The aseptic sampling device for food testing according to claim 2, characterized in that: The top end of the connecting rod (21) is fixedly connected to a pull handle (22), and the outer surface of the exhaust pipe (1) is symmetrically fixedly connected to a hanging ear (11) near the top.

4. The aseptic sampling device for food testing according to claim 3, characterized in that: The bottom end of the liquid suction tube (42) is threadedly connected to a second sealing cover (62).

5. The aseptic sampling device for food testing according to claim 4, characterized in that: The top of the sample tube (4) is fixedly connected to an air inlet pipe (51) near the front side, and the top end of the air inlet pipe (51) is threadedly connected to a first sealing cover (52).

6. The aseptic sampling device for food testing according to claim 5, characterized in that: A sleeve (6) is fixedly connected to the top of the sample tube (4) near the middle, and a positioning column (3) is fixedly connected to the bottom of the exhaust tube (1) near the middle.

7. The aseptic sampling device for food testing according to claim 6, characterized in that: The bottom end of the positioning column (3) is plug-connected with the insert sleeve (6).

Images