A packaging bag sealing tightness detection device

Abstract

The utility model relates to the field of airtightness detection equipment, in particular to a packaging bag sealing tightness detection device, comprising an air pump and a detection mechanism, the detection mechanism is fixedly connected to the air outlet of the air pump, the detection mechanism comprises an air supply pipe, a pressure gauge and a valve body, the pressure gauge is arranged below the air outlet end of the air supply pipe, and the valve body is arranged below the pressure gauge; a fixing part, the fixing part comprises a fixed top cover and a fixed screw bolt, the fixing part is connected to the top of the detection mechanism, and the fixing part and the detection mechanism cooperate with each other; the utility model measures the sealing and the maximum tolerable air pressure of the package through the cooperation of the detection mechanism and the fixing part, the device has a simple structure and low manufacturing cost, and its volume is also smaller than that of general packaging bag airtightness testing equipment, and can be applied to more usage scenarios.

Description

Technical Field

[0001] The utility model relates to the field of airtightness detection equipment, in particular to a packaging bag sealing tightness detection equipment. Background Art

[0002] Packaging bags are generally used as carriers for storing objects. However, when the object to be stored is a fluid, the packaging bag needs to have a certain degree of sealing. In real life, packaging bags with self-sealing structures are generally used or packaging bags are sealed by hot melt equipment. Therefore, in order to test the sealing of packaging bags or the pass rate of hot melt packaging equipment, packaging bag sealing detection equipment is also indispensable.

[0003] There are currently the following problems:

[0004] Most of the existing sealing detection equipment for packaging bags often have complex structures or are slightly large in size, which limits the use scenarios of the detection equipment. In addition, most packaging bag sealing detection equipment, such as a sterilization bag packaging sealing detection equipment with Chinese patent number CN219369045U, can only detect whether the packaging bag is damaged, but cannot measure the maximum tolerable air pressure of the packaging bag. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] In view of the above problems and / or the problems existing in the prior art, the present utility model is proposed.

[0007] Therefore, the first technical problem to be solved by the present invention is that most of the existing sealing detection devices for packaging bags often have a complex structure, or are slightly large in size, or have a single function, which limits the use scenarios of the detection devices.

[0008] In order to solve the above technical problems, the utility model provides the following technical solutions: a packaging bag sealing tightness detection device, comprising an air pump and a detection mechanism, the detection mechanism is fixedly connected to the air outlet of the air pump, the detection mechanism comprises an air supply pipe, a pressure gauge and a valve body, the pressure gauge is arranged below the air outlet end of the air supply pipe, and the valve body is arranged below the pressure gauge; a fixing part, the fixing part comprises a fixed top cover and a fixed screw bolt, the fixing part is connected to the top of the detection mechanism, and the fixing part and the detection mechanism cooperate with each other.

[0009] As a preferred solution of the packaging bag sealing tightness detection device described in the utility model, the fixed top cover and the top of the air pipe are both provided with screw holes, and the fixed bolt passes through the fixed top cover and is threadedly connected with the fixed top cover and the air pipe in turn.

[0010] As a preferred solution of the packaging bag sealing tightness detection equipment described in the utility model, wherein: a limiting plate is provided on the outer wall of the fixed bolt, and the fixed bolt is provided with a connecting groove, one end of the connecting groove is opened at the gap between the limiting plate and the top of the fixed bolt, and the other end is opened at the bottom of the limiting plate.

[0011] As a preferred solution of the packaging bag sealing tightness detection device described in the utility model, a filter plate is arranged on the inner wall of the gas transmission pipe below the pressure gauge.

[0012] As a preferred solution of the packaging bag sealing tightness detection device described in the utility model, the valve body can be any one of a gate valve, a stop valve, a ball valve, a butterfly valve or a plug valve.

[0013] As a preferred solution of the packaging bag sealing tightness detection device described in the utility model, the valve body is a ball valve.

[0014] The beneficial effects of the utility model are as follows: the sealing property and the maximum tolerable air pressure of the package are measured through the cooperation of the detection mechanism and the fixing parts. The device has a simple structure and a low manufacturing cost. Its volume is also smaller than that of general packaging bag air tightness testing equipment, and it can be applied to more usage scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0016] Figure 1 A schematic diagram of the overall structure of a packaging bag sealing tightness detection device provided by the utility model;

[0017] Figure 2 A schematic diagram of the structure of a detection mechanism and a fixing part in a packaging bag sealing tightness detection device provided by the utility model;

[0018] Figure 3 A schematic diagram of the exploded structure of a detection mechanism and a fixing part in a packaging bag sealing tightness detection device provided by the utility model;

[0019] Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure when the barometer is not installed;

[0020] Figure 5 A schematic cross-sectional view of the gas transmission pipe in a packaging bag sealing tightness detection device provided by the utility model;

[0021] Figure 6 The utility model provides a schematic cross-sectional structure diagram of a fixed rotary bolt in a packaging bag sealing tightness detection device. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0025] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0026] Example

[0027] Reference Figures 1 to 6 The present embodiment provides a packaging bag sealing tightness detection device, including an air pump 100 and a detection mechanism 200, the detection mechanism 200 is fixedly connected to the air outlet of the air pump 100, the detection mechanism 200 includes an air supply pipe 201, a pressure gauge 202 and a valve body 203, the pressure gauge 202 is arranged below the air outlet end of the air supply pipe 201, and the valve body 203 is arranged below the pressure gauge 202; a fixing member 300, the fixing member 300 includes a fixed top cover 301 and a fixed screw bolt 302, the fixing member 300 is connected to the top of the detection mechanism 200, and the fixing member 300 and the detection mechanism 200 cooperate with each other.

[0028] Screw holes 301a are provided on the top of the fixed top cover 301 and the gas pipe 201, and the fixed bolt 302 penetrates the fixed top cover 301 and is threadedly connected with the fixed top cover 301 and the gas pipe 201 in sequence; when testing is required, the outer side of the packaging bag is placed on the top of the gas pipe 201, and then the fixed top cover 301 is placed on the inner side of the package, so that the gas pipe 201 and the fixed top cover 301 cooperate to clamp one side of the packaging bag, and then the fixed bolt 302 is threadedly connected with the fixed top cover 301 and the gas pipe 201 in sequence. During the threaded connection, the packaging bag is punctured by the fixed bolt 302, and the fixed top cover 301 and the gas pipe 201 are clamped to prevent the punctured hole of the packaging bag from being damaged. After the packaging bag is sealed, gas is injected into the packaging bag through the punctured hole and the fixed bolt 302 to expand the packaging bag.

[0029] A limiting plate 302a is provided on the outer wall of the fixed bolt 302, and a connecting groove 302b is opened on the fixed bolt 302, one end of the connecting groove 302b is opened at the gap between the limiting plate 302a and the top of the fixed bolt 302, and the other end is opened at the bottom of the limiting plate 302a; when the limiting plate 302a is in contact with the fixed top cover 301, since the fixed bolt 302 and the air pipe 201 are in a threaded connection state at this time, at this time, when the fixed bolt 302 and the air pipe 201 are in a fixed state, due to the limitation of the limiting plate 302a, the fixed top cover 301 cannot rotate, thereby further ensuring that the pressing and clamping part of the packaging bag will not be worn or damaged due to the rotation of the fixed top cover 301, so as to ensure the air tightness of the packaging bag during the connection and testing of the packaging bag with the testing equipment.

[0030] A filter plate 201a is provided on the inner wall of the gas pipe 201 below the pressure gauge 202. The function of the filter plate 201a is to retain the packaging bag fragments punctured by the fixed screw 302 without affecting the overall air tightness of the gas pipe 201, so as to prevent the fragments from clogging the valve body 203 or entering the interior of the air pump 100, thereby shortening the service life of the air pump 100.

[0031] The valve body 203 may be any one of a gate valve, a stop valve, a ball valve, a butterfly valve or a plug valve. In the present embodiment, the valve body 203 is a ball valve 203a.

[0032] Working principle: Connect the detection mechanism 200 to the air outlet of the air pump 100, fix and puncture the packaging bag through the air pipe 201 and the fixing piece 300 according to the above steps, then turn on the power of the air pump 100, and inject gas into the air pipe 201 through the air pump 100. The gas inside the air pipe 201 is injected into the packaging bag through the connecting groove 302b of the fixing screw 302 to expand and the air pressure inside the packaging bag is higher than the standard atmospheric pressure. After completion, rotate the ball valve 203a to make the top of the air pipe 201 and the inside of the packaging bag in a closed state. At this time, the air pressure of the gas inside the packaging bag is read and fed back by the barometer 202. When the sealing degree of the packaging bag is not up to standard or the packaging bag is damaged, the air pressure inside the packaging bag is higher than the external air pressure. At this time, the gas inside the packaging bag is The air will continue to overflow through the gap until the pressure gauge 202 shows that the air pressure inside the packaging bag is the same as the external air pressure, which means that the sealing degree of the packaging bag does not meet the standard. When it is necessary to measure the maximum tolerable air pressure of the packaging bag, on the premise that there is no problem with the sealing of the packaging bag, adjust the fixed position of the packaging bag according to the specific shape of the packaging bag, and continuously inject gas into the packaging bag through the air pump 100 and record the reading of the pressure gauge 202 until the packaging bag is damaged and the pressure gauge 202 returns to normal pressure, the maximum tolerable air pressure of the packaging bag can be measured. After completing the inspection, remove the packaging bag and the fixed top cover 301 by rotating the fixing bolt 302, then remove the pressure gauge 202, and remove the fragments that pierce the packaging bag through the connection between the air supply pipe 201 and the pressure gauge 202.

[0033] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0034] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0035] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A packaging bag sealing tightness detection device, characterized in that: The invention comprises an air pump (100) and a detection mechanism (200), wherein the detection mechanism (200) is fixedly connected to the air outlet of the air pump (100), and the detection mechanism (200) comprises an air delivery pipe (201), a pressure gauge (202) and a valve body (203), wherein the pressure gauge (202) is arranged below the air outlet end of the air delivery pipe (201), and the valve body (203) is arranged below the pressure gauge (202); A fixing member (300), the fixing member (300) comprising a fixing top cover (301) and a fixing screw bolt (302), the fixing member (300) being connected to the top of the detection mechanism (200), and the fixing member (300) and the detection mechanism (200) being in cooperation with each other.

2. The packaging bag sealing tightness detection device according to claim 1, characterized in that: The fixed top cover (301) and the top of the gas pipe (201) are both provided with screw holes (301a), and the fixed screw bolt (302) passes through the fixed top cover (301) and is threadedly connected to the fixed top cover (301) and the gas pipe (201) in sequence.

3. The packaging bag sealing tightness detection device according to claim 2, characterized in that: The outer wall of the fixed rotary bolt (302) is provided with a limiting plate (302a), and the fixed rotary bolt (302) is provided with a connecting groove (302b), one end of the connecting groove (302b) is opened at the gap between the limiting plate (302a) and the top of the fixed rotary bolt (302), and the other end is opened at the bottom of the limiting plate (302a).

4. The packaging bag sealing tightness detection device according to claim 3, characterized in that: A filter plate (201a) is provided on the inner wall of the gas delivery pipe (201) below the pressure gauge (202).

5. The packaging bag sealing tightness detection device according to claim 4, characterized in that: The valve body (203) may be any one of a gate valve, a stop valve, a ball valve, a butterfly valve or a plug valve.

6. The packaging bag sealing tightness detection device according to claim 5, characterized in that: The valve body (203) is a ball valve (203a).

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