Air tightness detection device for soft bag welding quality detection

Abstract

The utility model discloses an air tightness detection device for soft bag welding quality detection, which relates to the technical field of detection devices, solves the technical problem that a device for detecting the air tightness of a soft bag is lacked in the prior art, and comprises a soft bag, a protection device and an inflation probe, the soft bag is used for preventing the soft bag from bursting and scattering, the inflation probe is used for being inserted into the soft bag to inflate the soft bag, and the inflation probe is connected with an air source through a pipeline; according to the utility model, the purpose of detecting the sealing performance of the soft bag is realized, the structure is simple, the test operation is convenient, the soft bag can be prevented from cracking and scattering, and the device is suitable for detecting various different soft bags.

Description

TECHNICAL FIELD

[0001] The utility model relates to detection device technical field, concretely relates to a kind of air tightness detection device for soft bag welding quality detection. BACKGROUND

[0002] At present, the infusion products of multilayer co-extrusion infusion bag at home and abroad gradually replace traditional glass bottle infusion with its unique light weight, convenient to carry and use, easy degradation and other advantages, and form a rivalrous situation with vertical plastic infusion container. However, the biggest quality problem of soft bag infusion is the leakage during production, transportation and terminal use. How to effectively avoid the flow of defective products from the front end of manufacturing into the market and ensure the quality of bag making is a problem faced by every manufacturer.

[0003] In order to protect product quality, it is necessary to detect the welding strength of the bag body to ensure that the air tightness of the soft bag meets the requirements, and to determine whether there is a situation of insecure welding around the soft bag. Based on this, the present application provides an air tightness detection device for soft bag welding quality detection. SUMMARY

[0004] The utility model aims at providing an air tightness detection device for soft bag welding quality detection to solve the technical problem of lack of device for air tightness detection of soft bag welding quality in the prior art, achieve the purpose of soft bag sealing detection, have simple structure, convenient testing operation, can prevent soft bag from bursting and scattering, and are suitable for detection of various soft bags.

[0005] The utility model realizes the following technical scheme:

[0006] An air tightness detection device for soft bag welding quality detection comprises:

[0007] A soft bag;

[0008] A protection device arranged outside the soft bag for preventing the soft bag and its plastic components from bursting and scattering during detection; and

[0009] An inflation probe for inflating the soft bag by being inserted into the soft bag, which is connected with a gas source through a pipeline.

[0010] Further, the soft bag comprises a bag body, a first interface and a second interface, and the inflation probe is inserted into the soft bag through the first interface or the second interface.

[0011] Further, the first interface is provided with a sealing rubber plug, and the second interface is provided with a medicine plug.

[0012] Further, the protection device comprises an upper parallel plate and a lower parallel plate connected as a whole, and the soft bag is arranged in the gap between the upper parallel plate and the lower parallel plate.

[0013] Further, the upper parallel plate and the lower parallel plate are connected through a spacing adjustment device.

[0014] Further, the spacing adjustment device comprises an adjusting bolt and an adjusting nut.

[0015] Further, the inflatable probe is connected with a compressed air storage tank through a pipeline.

[0016] Further, a pressure reducing valve and a solenoid valve are arranged on the pipeline connecting the inflatable probe with the air source.

[0017] Further, the solenoid valve is electrically connected with a relay.

[0018] Further, the pressure reducing valve, the solenoid valve and the relay are electrically connected with a detection control box.

[0019] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0020] 1. The utility model discloses a protective device is arranged outside the soft bag, can be used for preventing the soft bag and its plastic component from bursting and scattering in the detection process, the soft bag is arranged in the gap between the upper parallel plate and the lower parallel plate of the protective device, and the soft bag is protected in the inside through the arrangement of the upper and lower two parallel plates, if the soft bag bursts under the pressure bearing state, the burst state can be suppressed, and the harm caused to personnel by the scattering of the bag body due to the overhigh pressure in the detection process is avoided.

[0021] 2. The utility model discloses a spacing adjustment device is arranged between the upper parallel plate and the lower parallel plate, and the spacing adjustment device comprises an adjusting bolt and an adjusting nut, for different soft bags, there can be the case that the spacing between the upper and lower two parallel plates needs to be finely adjusted, when adjusting, the spacing between the upper parallel plate and the lower parallel plate is adjusted through the adjusting bolt and the adjusting nut, so as to be suitable for detecting a plurality of different soft bags.

[0022] 3. The utility model discloses a device structure is simple, and the test operation is convenient, is used to input compressed air to the inside of the soft bag to be detected, maintains a stable pressure until the set test time ends, thereby detects the welding effect when the soft bag bears the set pressure, reaches the purpose of the soft bag leakproofness detection, realizes the inspection and accurate control of the welding quality of the soft bag by designing different detection pressure and time, thereby ensures the quality of the production facility bag making, reduces the defective rate of product. DRAWINGS

[0023] The drawings described herein are used to provide further understanding of the embodiments of the utility model, constitute a part of this application, and do not constitute the limitation to the embodiments of the utility model. In the drawings:

[0024] Figure 1 is a structural schematic view of the utility model;

[0025] Figure 2 is a structural schematic view of the protective device;

[0026] Figure 3 is a side view of the protective device;

[0027] Figure 4 is a structural schematic view of the soft bag.

[0028] Markings in the drawings and corresponding component names:

[0029] 1-protective device, 101-upper parallel plate, 102-lower parallel plate, 2-distance adjusting device, 201-adjusting bolt, 202-adjusting nut, 3-soft bag, 301-bag body, 302-first interface, 303-sealing rubber plug, 304-second interface, 305-plug, 4-inflation probe, 5-pressure reducing valve, 6-solenoid valve, 7-relay, 8-detection control box, 9-compressed air storage tank. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail by combining with the embodiment and drawings, the schematic embodiment of the utility model and its description are only used to explain the utility model, and not as the limitation of the utility model.

[0031] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the utility model. However, it is apparent to those skilled in the art that the utility model can be practiced without these specific details. In other embodiments, well-known structures, circuits, materials or processes are not specifically described in order to avoid obscuring the utility model.

[0032] In the entire description, the reference to "one embodiment", "embodiment", "one example" or "example" means that the specific features, structures or characteristics described in conjunction with the embodiment or example are included in at least one embodiment of the utility model. Therefore, the phrases "one embodiment", "embodiment", "one example" or "example" appearing in various places in the entire description do not necessarily refer to the same embodiment or example. In addition, specific features, structures or characteristics can be combined in one or more embodiments or examples in any appropriate combination and / or subcombination. In addition, those skilled in the art should understand that the drawings provided herein are for illustrative purposes, and the drawings are not necessarily drawn to scale. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0033] In the description of the utility model, the indicated orientation or position relation is based on the orientation or position relation shown in the drawings, or is the orientation or position relation commonly placed when the product of the application is used, or is the orientation or position relation commonly understood by the person skilled in the art, and is only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as limiting the application.

[0034] Meanwhile, the terms "arrange", "assemble", "connect", "connect" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication inside two elements. For the person skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0035] Embodiment

[0036] The embodiment provides airtightness detection device for soft bag welding quality detection, as shown in Figures 1-4 , including soft bag 3, protection device 1 and inflation probe 4.

[0037] The soft bag 3 includes bag body 301, first interface 302 and second interface 304, the inflation probe 4 is inserted into the soft bag 3 through the first interface 302 or the second interface 304, the first interface 302 is provided with sealing rubber plug 303, and the second interface 304 is provided with plug 305. The soft bag 3 can be a different structure form infusion bag or dialysis liquid bag, including three-layer co-extrusion infusion film bag, three-layer co-extrusion infusion double-chamber bag, three-layer co-extrusion infusion three-chamber bag, five-layer co-extrusion infusion film bag, peritoneal dialysis liquid bag and the like. As shown in Figure 4 , the inflation probe 4 is inserted into the soft bag 3 through the sealing rubber plug 303 of the first interface 302 to realize inflation of the soft bag 3.

[0038] The protection device 1 is arranged outside the soft bag 3 and is used for preventing the soft bag 3 and plastic components thereof from bursting and scattering during detection, as shown in Figure 2 and 3 , the protection device 1 includes upper parallel plate 101 and lower parallel plate 102 connected as a whole, and the soft bag 3 is arranged in the gap between the upper parallel plate 101 and the lower parallel plate 102. The soft bag 3 is protected in the upper and lower parallel plates, and if the soft bag 3 bursts under pressure, the bursting state can be suppressed, so that the personnel is prevented from being injured due to scattering of the bag body 301 caused by overpressure during detection.

[0039] As a preferred embodiment, as shown in Figure 2As shown, the upper parallel plate 101 and the lower parallel plate 102 are connected through the spacing adjusting device 2, and the spacing adjusting device 2 comprises an adjusting bolt 201 and an adjusting nut 202. For different soft bags 3, there may be a need to fine-tune the spacing between the upper and lower parallel plates, and when adjusting, the spacing between the upper parallel plate 101 and the lower parallel plate 102 is adjusted through the adjusting bolt 201 and the adjusting nut 202, so as to be suitable for detection of a plurality of different soft bags 3.

[0040] The inflation probe 4 is used for inflating the soft bag 3 by being inserted into the soft bag 3, and the inflation probe 4 is connected with the gas source through a pipeline, the gas source is compressed air, and the inflation probe 4 is connected with the compressed air storage tank 9 through a pipeline; a pressure reducing valve 5 and a solenoid valve 6 are arranged on the pipeline connected with the gas source of the inflation probe 4, the solenoid valve 6 is electrically connected with a relay 7, and the pressure reducing valve 5, the solenoid valve 6 and the relay 7 are electrically connected with a detection control box 8. By arranging the pressure reducing valve 5, the gas pressure in the soft bag 3 is controlled, by arranging the solenoid valve 6, the air inlet and the air closing are controlled, and by arranging the relay 7, the detection time parameter is set.

[0041] The device is simple in structure and convenient to test and operate, is used for inputting compressed air into a to-be-detected soft bag 3, maintains a stable pressure until the set test time ends, thereby detecting the welding effect of the soft bag 3 under the set pressure, achieves the purpose of detecting the sealing performance of the soft bag 3, realizes the test and accurate control of the welding sealing quality of the soft bag 3 by designing different detection pressures and times, and thus the quality of the production facility bag-making is ensured, and the defective product rate of products is reduced.

[0042] When the bag body 301 is detected, the inflation probe 4 is inserted into the soft bag 3 through the sealing rubber plug 303, the other interface of the soft bag 3 is sealed by using the medicine plug 305, then the bag body 301 to be detected is placed between the upper parallel plate 101 and the lower parallel plate 102, the gas pressure in the bag body 301 is controlled by adjusting the knob of the pressure reducing valve 5, the time parameter of the relay 7 is set to 30 seconds, the bag body 301 reaches the set pressure 0.15MPa, and the detection is completed after pressure relief.

[0043] When detected, if the welding strength of the bag body 301 to be detected is insufficient, the bag body 301 is a defective product, that is, the welding of the periphery of the soft bag 3 is not firm, then the periphery will burst due to being unable to withstand the detection pressure, and strong explosion sound will be generated; after the phenomenon occurs, the air inlet solenoid valve 6 can be closed and the defective sample can be taken out; if the welding of the periphery of the bag body 301 does not burst under the set pressure / time condition, and the cracking amplitude is small, it is indicated that the welding strength of the bag body 301 meets the requirements, and the product quality is guaranteed.

[0044] Finally, it should be noted that: the above specific examples only to the purpose of the present application, technical scheme and beneficial effects are described in detail, should be understood that the above only for the specific embodiments of the present application has, and is not used to limit the scope of the present application; although the present application is described in detail with reference to the foregoing specific examples, those skilled in the art should be understood: it still can be modified to the technical scheme recorded in the foregoing examples, or part or all of the technical features of the equivalent replacement, improvement, etc.; and these modifications, equivalent replacement, improvement, and do not make the essence of the corresponding technical scheme out of the scope of the embodiments of the present application technical scheme, it should be covered in the scope of the claims and description of the present application.

Claims

1. A gas tightness detection device for soft bag welding quality detection, characterized by, The utility model relates to a kind of safety protection device for soft bag, including: Soft bag (3); Protective device (1) is arranged outside soft bag (3), for preventing soft bag (3) and its plastic component burst and scatter during detection, the protective device (1) includes the upper parallel plate (101) and lower parallel plate (102) connected as a whole, the soft bag (3) is arranged in the gap between the upper parallel plate (101) and lower parallel plate (102), the upper parallel plate (101) and lower parallel plate (102) are connected by spacing adjusting device (2) between, the spacing adjusting device (2) includes adjusting bolt (201) and adjusting nut (202);And Inflatable probe (4) is inserted into soft bag (3) to inflate soft bag (3), and the inflatable probe (4) is connected with gas source by pipeline.

2. The air tightness detection device for soft bag welding quality detection according to claim 1, characterized in that, The soft bag (3) includes bag body (301), first interface (302) and second interface (304), and the inflatable probe (4) is inserted into soft bag (3) through first interface (302) or second interface (304).

3. The air tightness detection device for soft bag welding quality detection according to claim 2, characterized in that, The first interface (302) is provided with sealing rubber plug (303), and the second interface (304) is provided with medicine plug (305).

4. The air tightness detection device for soft bag welding quality detection according to claim 1, characterized in that, The inflatable probe (4) is connected with compressed air storage tank (9) by pipeline.

5. The air tightness detection device for soft bag welding quality detection according to any one of claims 1-4, characterized in that, The pipeline, where the inflatable probe (4) is connected with gas source, is provided with pressure reducing valve (5) and solenoid valve (6).

6. The air tightness detection device for soft bag welding quality detection according to claim 5, characterized in that, The solenoid valve (6) is electrically connected with relay (7).

7. The air tightness detection device for soft bag welding quality detection according to claim 6, characterized in that, The pressure reducing valve (5), solenoid valve (6) and relay (7) are electrically connected with detection control box (8).

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