Equipment for measuring residual gas in vacuum package

Abstract

The utility model relates to the field of detection equipment, in particular to equipment for measuring residual gas in a vacuum package, which comprises a test barrel, a detection device and a control device, the negative pressure assembly comprises a negative pressure pump, a negative pressure pipeline communicated with the negative pressure pump and the test barrel, and a negative pressure sensor arranged on the negative pressure pipeline, and the negative pressure pipeline is connected to one side, facing the test barrel, of the negative pressure sensor and is provided with a one-way valve and a pipeline sensor used for testing water flow of the negative pressure pipeline; the pipeline sensor is arranged on one side, facing the test barrel, of the one-way valve; and the water measuring barrel assembly comprises a water measuring barrel, a water measuring pipeline connected between the water measuring barrel and the test barrel, and a first stop valve arranged on the water measuring pipeline. According to the utility model, the matching connection mode of the testing barrel and the water measuring barrel is optimally designed, so that the existing problems are effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of detection equipment, especially in a kind of equipment for measuring gas residue in vacuum packaging. BACKGROUND

[0002] The gas residue detection of vacuum packaging bag is the key link of packaging quality detection, when carrying out gas residue detection, it is detected by special vacuum gas detection equipment.The patent with the publication number CN 202092713 U discloses vacuum packaging inner gas residue detection device.It is provided with inner barrel and outer barrel that is sleeved in the outer side of inner barrel, and the water of the measuring pipe of inner barrel is monitored to measure residual air content by the negative pressure extraction of outer barrel when entering and exiting detection.When measuring in this way, the water quantity observation of measuring pipe is difficult, and the rising height of measuring pipe is influenced by the coupling of the negative pressure value between inner barrel and outer barrel, the pressure generated by the water column height in measuring pipe and the water bottom of inner barrel, and the gas quantity in packaging bag, so that the pressure generated by the water column height in measuring pipe influences the detection precision of gas volume change. UTILITY MODEL CONTENT

[0003] In order to solve the above technical problems, the utility model provides a kind of equipment for measuring gas residue in vacuum packaging, the cooperation connection mode of test barrel and water measuring barrel is designed by optimization, effectively solve the existing problems.

[0004] In order to solve the above problems, the utility model provides a kind of equipment for measuring gas residue in vacuum packaging, including: test barrel, the test barrel is set to open and close;Negative pressure component, including negative pressure pump, the negative pressure pipeline that is communicated in the negative pressure pump and the test barrel, the negative pressure sensor that is set in negative pressure pipeline, the negative pressure pipeline is connected in the one-way valve and the pipeline sensor for testing the water flow of negative pressure pipeline on the side of negative pressure sensor towards test barrel, the pipeline sensor is set on the side of the one-way valve towards the test barrel;Water measuring barrel component, including water measuring barrel, water measuring pipeline that is connected in the water measuring barrel and the test barrel, first stop valve that is set in water measuring pipeline.

[0005] Further, the negative pressure pipeline is provided with a vacuum chamber between the negative pressure sensor and the one-way valve, and the top of the vacuum chamber is communicated with the negative pressure pipeline.

[0006] Further, the test barrel is further communicated with a water supply pipe, and the water supply pipe is provided with a second stop valve.

[0007] Further, the water measuring pipeline is provided with a water measuring chamber, and the water measuring chamber is provided with a first liquid level sensor.

[0008] Further, the first stop valve is provided with two, and the two sides of the water measuring chamber are respectively provided with the first stop valve, and the water measuring barrel is further connected with a water pressure sensor.

[0009] Furthermore, a weighing sensor is provided on the lower side of the measuring bucket.

[0010] Furthermore, the measuring tank is also equipped with a second liquid level sensor.

[0011] Furthermore, it also includes a mounting base, which includes a housing with a mounting cavity, a mounting hole on the top of the housing, and a support rib in the mounting cavity; the measuring bucket and the test bucket are mounted on the support rib; the device also includes a main unit mounted on the mounting base, the main unit having a display screen, and the main unit being electrically connected to the negative pressure sensor, the pipeline sensor, and the first shut-off valve.

[0012] The beneficial effect of this utility model is that it effectively solves the existing problems by optimizing the connection method between the test bucket and the measuring bucket. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0014] Figure 1 This is a schematic diagram of the circuit connection according to an embodiment of the present invention.

[0015] Figure 2 for Figure 1 A schematic diagram of the structure of the embodiment shown.

[0016] Figure 3 for Figure 2 The illustrated embodiment is a structural diagram after removing the test tank, water measuring tank, vacuum chamber, and water measuring chamber.

[0017] Figure 4 for Figure 1 The illustrated embodiment is shown in a side cross-sectional view.

[0018] The components include: 1. Test tank; 2. Negative pressure pump; 3. Negative pressure pipeline; 4. Sample; 5. Negative pressure sensor; 6. One-way valve; 7. Pipeline sensor; 8. Measuring tank; 9. Measuring pipeline; 10. Water supply pipe; 11. First shut-off valve; 12. Second shut-off valve; 13. Vacuum chamber; 14. Measuring chamber; 15. First liquid level sensor; 16. Weighing sensor; 17. Second liquid level sensor; 18. Housing; 19. Support rib; 20. Main unit; 2001. Display screen; 21. Water pressure sensor. Detailed Implementation

[0019] In order to more clearly illustrate the overall concept of the present utility model, the following will be described in detail in an exemplary manner in combination with the accompanying drawings.

[0020] It should be noted that in the following description, many specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model can also be implemented in other ways different from those described herein, therefore, the protection scope of the present utility model is not limited by the specific embodiments disclosed below.

[0021] In addition, in the description of the present utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present utility model.

[0022] In the present utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. However, it is noted that direct connection means that the connection between the two main bodies does not form a connection relationship through an excessive structure, but is connected to form a whole only through the connection structure. For ordinary skilled persons in the art, the specific meaning of the above terms in the present utility model can be understood according to the specific circumstances.

[0023] In the present utility model, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0024] In the present utility model, as Figures 1 to 4As shown, a device for measuring residual gas in a vacuum package is provided, comprising: a test barrel 1 arranged to be openable and closable; a negative pressure assembly comprising a negative pressure pump 2, a negative pressure pipeline 3 connected between the negative pressure pump 2 and the test barrel 1, a negative pressure sensor 5 arranged in the negative pressure pipeline 3, the negative pressure pipeline 3 being provided with a one-way valve 6 and a pipeline sensor 7 for testing water flow of the negative pressure pipeline 3 on the side of the negative pressure sensor 5 towards the test barrel 1, the pipeline sensor 7 being arranged on the side of the one-way valve 6 towards the test barrel 1; a water measuring barrel 8 assembly comprising the water measuring barrel 8, a water measuring pipeline 9 connected between the water measuring barrel 8 and the test barrel 1, a first stop valve 11 arranged in the water measuring pipeline 9.

[0025] In use, the sample 4 to be detected is placed in the test barrel 1, and the test barrel 1 is filled with water. In the closed state of the first stop valve 11, the negative pressure pump 2 provides negative pressure, and the water in the test barrel 1 is gradually drawn out by the negative pressure pipeline 3, and the water flowing out of the water measuring barrel is replaced by the air expanded in the sample 4. When the negative pressure value measured by the negative pressure sensor 5 of the negative pressure pipeline 3 tends to be stable, it indicates that the air expansion of the sample 4 reaches the limit. At this time, the first stop valve 11 can be opened, and the water in the water measuring barrel gradually enters the test barrel 1, and the sample 4 gradually shrinks. After the water in the test barrel 1 is replenished. By measuring the water reduction of the water measuring barrel 8, the maximum expansion volume of the air in the sample 4 can be measured. At this time, the content of air in the packaging bag can be calculated by the ratio of water and air density (1:722), and the contents of oxygen, nitrogen, carbon dioxide and other gases can be calculated in the same way. In this way, the measurement of the gas content in the packaging without destroying the vacuum state of the packaging is realized.

[0026] The technical advantage of the utility model lies in that, by adopting the water measuring barrel replenishment mode, the water in the water measuring barrel replenished into the test barrel 1 can more truly reflect the volume difference between the expansion limit and the shrinkage of the sample 4, compared with the volume change mode of the water column of the metering pipe in the prior art, the utility model reduces the influence of residual air in the water injection of the test barrel 1 on the test precision. Moreover, in the utility model, the water volume change of the water measuring barrel is directly measured, which is easier to observe and measure the water volume change of the water measuring barrel 8 compared with the prior art, and also reduces the influence of the water column pressure of the metering pipe on the expansion volume of the sample 4. In the specific embodiment, the pipeline sensor 7 preferably adopts a flow sensor or a liquid level sensor.

[0027] For the opening and closing mode of the test barrel, in the illustrated embodiment, further specifically, the test barrel comprises a barrel body and a cover body screwing on the barrel body.

[0028] In the preferred embodiment, for the structure of the utility model, further specific said, the negative pressure pipeline 3 between the negative pressure sensor 5 and the one-way valve 6 is equipped with a vacuum chamber 13, the top of the vacuum chamber 13 communicates the negative pressure pipeline 3.

[0029] As shown in the figure, by setting the vacuum chamber 13, the water drawn by the test barrel 1 can enter the vacuum chamber 13 when the negative pressure pump 2 starts the negative pressure, so as to prevent the drawn water from entering the negative pressure pump.

[0030] In the preferred embodiment, for the structure of the utility model, further specific said, the test barrel 1 is also communicated with a water supply pipe 10, and the water supply pipe 10 is equipped with a second stop valve 12. As shown in the figure, the water can be conveniently injected into the test barrel 1.

[0031] In the preferred embodiment, for the structure of the utility model, further specific said, the water measuring pipeline 9 is equipped with a water measuring chamber 14, and the water measuring chamber 14 is equipped with a first liquid level sensor 15. As shown in the figure, by setting the water measuring chamber 14, when the first stop valve 11 is opened after the sample 4 is expanded, the gas existing in the water measuring pipeline 9 can be prevented from entering the test barrel, thereby preventing the influence on the test result caused thereby.

[0032] In the preferred embodiment, for the structure of the utility model, further specific said, the first stop valve 11 is provided with two, and the water measuring chamber 14 is provided with the first stop valve 11 on both sides, and the water measuring barrel is also connected with a water pressure sensor 21. As shown in the figure, by setting two stop valves, the left stop valve of the water measuring chamber can be used to keep the bottom of the water measuring barrel closed during the negative pressure drawing process of the test barrel. When the test barrel changes from the negative pressure state to the normal pressure state (the left and right stop valves of the water measuring chamber are opened), the water pressure sensor 21 detects that the water pressure in the water measuring barrel changes to a stable normal pressure state (in the embodiment shown in the figure, the water pressure sensor is arranged at the position where the water measuring barrel bottom and the water measuring pipeline are connected, and the normal pressure state needs to be superimposed with the vertical water pressure of the test barrel), at this time, it indicates that the normal pressure in the measuring barrel is restored, and the right stop valve of the water measuring chamber can be closed. In this way, when there is air in the water measuring chamber and there is a liquid level difference between the water measuring barrel and the water measuring chamber, the water flow between the water measuring chamber and the water measuring barrel can be prevented from affecting the precision.

[0033] In the preferred embodiment, for the structure of the utility model, further specific said, the lower side of the water measuring barrel 8 is equipped with a weighing sensor 16.

[0034] In the preferred embodiment, for the structure of the utility model, further specific said, the water measuring barrel 8 is also equipped with a second liquid level sensor 17.

[0035] In the preferred embodiment, for the structure of the utility model, further specific said, the utility model still includes the mounting seat, the mounting seat includes the casing 18 with installation cavity, the top of casing 18 is equipped with mounting hole, the casing 18 is equipped with support rib 19 in the installation cavity;The water measuring bucket 8 and the test barrel 1 are installed in the support rib 19;The equipment still includes the host computer 20 installed in the mounting seat, the host computer 20 has display screen 2001, the host computer 20 is electrically connected with negative pressure sensor 5, pipeline sensor 7, first stop valve 11.

[0036] As shown in the figure, the water measuring bucket 8 and the test barrel 1, the water measuring chamber 14, the vacuum chamber 13 are located on the upper side of the mounting seat as a whole, by setting the support rib 19 in the installation cavity, the support rib 19 can support the test barrel 1, the water measuring bucket 8, so that the installation cavity can have the space of arranging the water measuring pipeline 9, the negative pressure pipeline 3, the wire, so that the whole equipment is more regular and concise.

[0037] In the illustrated embodiment, for the structure of the utility model, further specific said, the host computer 20 can select the existing host computer 20 with display screen 2001 and processor, so as to display the values of negative pressure sensor 5, pipeline sensor 7, first liquid level sensor 15, second liquid level sensor 17, weighing sensor 16 through display screen 2001, and the host computer 20 can also be used to control the opening and closing of negative pressure pump 2, first stop valve 11 and second stop valve 12.

[0038] Each of the embodiments in the specification is described in a progressive manner, and the same and similar parts of each embodiment can be referred to each other, and each embodiment mainly describes the difference from other embodiments. Especially, for the system embodiment, because it is basically similar to the method embodiment, so the description is relatively simple, and the related parts can refer to the part of the method embodiment.

[0039] The above is only the embodiment of the application and is not used to limit the application. The application can have various changes and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the application shall be included in the scope of claims of the application.

Claims

1. An apparatus for measuring the residual gas in a vacuum package, characterized by, The utility model relates to a water quality testing device, comprising: a test barrel arranged to be openable and closable; a negative pressure assembly comprising a negative pressure pump, a negative pressure pipeline connected between the negative pressure pump and the test barrel, and a negative pressure sensor arranged in the negative pressure pipeline, wherein the negative pressure pipeline is provided with a one-way valve and a pipeline sensor for testing water flow in the negative pressure pipeline on the side of the negative pressure sensor facing the test barrel, and the pipeline sensor is arranged on the side of the one-way valve facing the test barrel; a water measuring barrel assembly comprising a water measuring barrel, a water measuring pipeline connected between the water measuring barrel and the test barrel, and a first stop valve arranged in the water measuring pipeline.

2. The apparatus for measuring gas residue in a vacuum package according to claim 1, wherein The negative pressure pipeline is provided with a vacuum chamber between the negative pressure sensor and the one-way valve, and the top of the vacuum chamber is connected to the negative pressure pipeline.

3. The apparatus for measuring gas residue in a vacuum package according to claim 1, wherein The test barrel is further connected to a water supply pipeline provided with a second stop valve.

4. The apparatus for measuring gas residue in a vacuum package according to claim 1, wherein The water measuring pipeline is provided with a water measuring chamber provided with a first liquid level sensor.

5. The apparatus for measuring gas residue in a vacuum package according to claim 4, wherein The first stop valve is provided with two, and the water measuring chamber is provided with the first stop valve on both sides thereof, and the water measuring barrel is further connected to a water pressure sensor.

6. The apparatus for measuring gas residue in a vacuum package according to claim 1, wherein The lower side of the water measuring barrel is provided with a weighing sensor.

7. The apparatus for measuring gas residue in a vacuum package according to claim 1, wherein The water measuring barrel is further provided with a second liquid level sensor.

8. The apparatus for measuring gas residue in a vacuum package according to claim 1, wherein The utility model further comprises a mounting seat comprising a casing provided with a mounting cavity, a mounting hole arranged on the top of the casing, and a support rib arranged in the mounting cavity of the casing; the water measuring barrel and the test barrel are mounted on the support rib. The device further comprises a host computer mounted on the mounting seat, wherein the host computer is provided with a display screen and is electrically connected to the negative pressure sensor, the pipeline sensor, and the first stop valve.

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