Empty can airtightness detection device

Abstract

The utility model discloses an empty can airtightness detection device, which is characterized in that the position of an empty can is determined through a bottom positioning groove, the empty can corresponds to a sealing ring of a cavity pressing plate, a hydraulic cylinder pushes the cavity pressing plate to enable the sealing ring to be tightly combined with the opening of the empty can, an inflation hose is inserted into one side of the cavity pressing plate, and detection gas is introduced. Meanwhile, the gas sensor is arranged to detect the concentration of the detected gas, if the concentration of the detected gas around the tank body is changed, the gas tightness of the tank body has a problem, and the gas extraction hose is inserted into the other side to collect the detected gas into the gas collection container, so that the reuse of the detected gas is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of empty can detection, in particular to an empty can air tightness detection device. Background Art

[0002] In the field of food processing and storage, canned food is a common packaging form, and its airtightness is crucial to ensure the quality and safety of food. Good airtightness can effectively extend the shelf life of food and maintain the flavor and nutritional value of food.

[0003] However, in the actual production process, due to improper production process, packaging materials or operation, the empty cans may have poor airtightness. If canned food with unqualified airtightness flows into the market, it will not only cause food deterioration, but also pose a threat to consumers' health.

[0004] Most of the existing detection devices place the empty can in water, pressurize the empty can through a pressurizing device, and see whether bubbles appear around the empty can to judge the air tightness. This method causes some small leaks to take a long time to manifest, and there are certain errors in manual observation, resulting in inaccurate detection results. In order to solve this problem, an empty can air tightness detection device is proposed. Utility Model Content

[0005] The utility model aims to provide an empty can air tightness detection device to effectively solve the problem that the empty can air tightness detection result is not accurate enough.

[0006] The utility model is realized by the following technical solutions:

[0007] An empty tank air tightness detection device comprises a base, a vertical guide column is installed on the upper surface of the base, a cavity pressure plate which can slide up and down along the guide column is sleeved on the guide column, and also comprises an upper and lower telescopic assembly, the upper and lower telescopic assembly comprises a fixed part and a telescopic part, the upper end of the guide column is connected to the fixed part, the telescopic part is arranged in the fixed part, and the telescopic part is connected to the upper surface of the cavity pressure plate, an inflation hose is inserted into the cavity pressure plate through one side of the cavity pressure plate, and an exhaust hose which can convey gas is inserted into the other side of the cavity pressure plate, and a connecting hole connecting the empty tank and the airway is provided below the cavity pressure plate.

[0008] Furthermore,

[0009] There is an airway inside the cavity pressure plate, and an inflation hole is opened on one side of the cavity pressure plate for the inflation hose to be inserted into the airway, and an exhaust hole is opened on the other side for the exhaust hose to be inserted into the airway. A sealing ring is provided on the lower surface of the cavity pressure plate, and the sealing ring coincides with the mouth of the empty can. A connecting hole is opened within the range of the lower surface where the sealing ring is located, and a guide hole for the guide column to pass through is opened at a position of the cavity pressure plate that is not an airway.

[0010] Furthermore,

[0011] A positioning groove is formed on the upper surface of the base, and the position of the positioning groove corresponds to the position of the sealing ring on the lower surface of the cavity pressing plate.

[0012] Furthermore,

[0013] It further includes a detection mechanism, which includes a low-position nitrogen sensor, a high-position nitrogen sensor, and an alarm lamp. The low-position nitrogen sensor is arranged inside the connection of the guide post and the base, the high-position nitrogen sensor is arranged at a position as high as an empty tank inside the guide post, and the alarm lamp is arranged on the upper surface of the base. The low-position nitrogen sensor, the high-position nitrogen sensor, and the alarm lamp are electrically connected.

[0014] Furthermore,

[0015] One end of the inflation hose is hermetically connected to the exhaust port of the first air pump, and the other end is inserted into the air duct of the cavity pressing plate through an inflation hole. The intake port of the first air pump is connected to a detection gas container.

[0016] Furthermore,

[0017] One end of the air extraction hose is connected to the intake port of the second air pump, and the other end is inserted into the air duct of the cavity pressing plate through an air extraction hole. The exhaust port of the second air pump is connected to a gas collection container through a pipeline.

[0018] Furthermore,

[0019] A sealing ring is arranged between the inflation hose and the inflation hole.

[0020] Furthermore,

[0021] A sealing ring is arranged between the air extraction hose and the air extraction hole.

[0022] Compared with the prior art, the present utility model has the following advantages and beneficial effects:

[0023] The airtightness detection device for an empty tank of the present utility model is simple and convenient to operate, can realize the recovery of the detection gas, realizes the repeated use of the detection gas, reduces the cost, and reduces the impact on the environment.

[0024] At the same time, sensors are adopted, which can accurately detect tiny leaks, and the detection results are more accurate. An alarm lamp electrically connected to the sensors is also adopted to make the result feedback more intuitive. Description of the Drawings

[0025] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, form a part of this application, and do not constitute a limitation on the embodiments of the present utility model. In the drawings:

[0026] Figure 1 This is a schematic structural view of the present utility model.

[0027] Figure 2 This is a perspective view of the cavity pressing plate.

[0028] Figure 3 This is a left view of the cavity pressing plate.

[0029] Figure 4 This is a top view of the cavity pressing plate.

[0030] Figure 5 This is a bottom view of the cavity pressing plate.

[0031] Figure 6 This is the working state during the device detection.

[0032] Figure 7 This is the working state when the device recovers gas.

[0033] Markings in the attached drawings and corresponding component names:

[0034] 1 - Up - and - down telescopic assembly, 10 - Fixed part, 11 - Telescopic part, 2 - Cavity pressing plate, 20 - Inflation hole, 21 - Communication hole, 22 - Sealing ring, 23 - Guide hole, 24 - Air extraction hole, 25 - Cavity, 3 - Base, 30 - Positioning groove, 4 - Inflation hose, 40 - First air extraction pump, 41 - Detection gas container, 5 - Air extraction hose, 50 - Second air extraction pump, 51 - Gas collection container, 6 - Guide post, 7 - Detection mechanism, 70 - Low - level nitrogen sensor, 71 - High - level nitrogen sensor, 72 - Alarm lamp. Specific embodiments

[0035] The following combines the embodiments and the attached drawings to further elaborate on the present utility model in detail, but the implementation manners of the present utility model are not limited thereto.

[0036] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc. is based on the orientation or positional relationship shown in the attached drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0037] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged", "provided with", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0038] Embodiment

[0039] See Figures 1 to 7 :

[0040] An airtightness detection device for an empty can, comprising a base 3. A vertical guide post 6 is installed on the upper surface of the base 3. A cavity pressing plate 2 that can slide up and down along the guide post is sleeved on the guide post 6. It further includes a vertical telescopic assembly 1. The vertical telescopic assembly 1 includes a fixed part 10 and a telescopic part 11. The upper end of the guide post 6 is connected to the fixed part 10. The telescopic part 11 is arranged inside the fixed part 10 and is connected to the upper surface of the cavity pressing plate 2. An inflation hose 4 passes through one side surface of the cavity pressing plate 2 and inserts into an air passage 25. The other side surface of the cavity pressing plate inserts a suction hose 5 that can convey gas. A communication hole is provided below the cavity pressing plate 2 to communicate the empty can 8 and the air passage 25.

[0041] Furthermore,

[0042] There is an air passage 25 inside the cavity pressing plate 2. An inflation hole 20 that just allows the inflation hose 4 to insert into the air passage is provided on the side surface of the cavity pressing plate 2. A suction hole 24 that just allows the suction hose 5 to insert into the air passage is provided on the other side. A sealing ring 22 is arranged on the lower surface of the cavity pressing plate 2, and the sealing ring 22 coincides with the can mouth of the empty can 8. A communication hole 21 is provided within the range of the lower surface where the sealing ring 22 is located. A guide post guiding hole 23 through which the guide post 6 can pass is provided at the position where the cavity pressing plate 2 is not a cavity. The detection gas enters the air passage 25 of the cavity pressing plate 2 through the inflation hose 4 and then discharges from the air passage 25 through the communication hole 21, thereby entering the empty can 8. The sealing ring 22 ensures that the detection gas entering the empty can 8 from the communication hole 23 will not leak. The cavity pressing plate 2 can move on the guide post 6 due to the guide hole 23.

[0043] Furthermore,

[0044] A positioning groove 30 is provided on the upper surface of the base 3, and the position of the positioning groove 30 corresponds to the position of the sealing ring 22 on the lower surface of the cavity pressing plate 2. The positioning groove 30 determines the placement position of the empty can 8.

[0045] Furthermore,

[0046] The detection mechanism 7 includes a low-level nitrogen sensor 70, a high-level nitrogen sensor 71, and an alarm lamp 72. The low-level nitrogen sensor 70 is arranged inside the connection between the guide post 6 and the base 3. The high-level nitrogen sensor 71 is arranged at a position on the inner side of the guide post 6 at the same height as the empty tank 8. The alarm lamp 72 is arranged on the upper surface of the base 3. The low-level nitrogen sensor 70, the high-level nitrogen sensor 71, and the alarm lamp 72 are electrically connected.

[0047] Furthermore,

[0048] One end of the inflation hose 4 is hermetically connected to the exhaust port of the first air pump 40, and the other end is inserted into the air passage 25 of the cavity pressing plate 2 through the inflation hole 20. The intake port of the first air pump 40 is connected to the detection gas container 41.

[0049] Furthermore,

[0050] One end of the air extraction hose 5 is hermetically connected to the intake port of the second air pump 50, and the other end is inserted into the air passage 25 of the cavity pressing plate 2 through the air extraction hole 23. The exhaust port of the second air pump 50 is connected to the gas collection container 51 through a pipeline.

[0051] Furthermore,

[0052] A sealing ring is arranged between the inflation hose 4 and the inflation hole 20.

[0053] Furthermore,

[0054] A sealing ring is arranged between the air extraction hose 5 and the air extraction hole 24.

[0055] The principle of the present utility model is as follows:

[0056] Before starting the detection work, the empty tank 8 needs to be placed with its tank opening upward on the positioning groove 30 of the base 3. Then, the up-and-down telescopic assembly 1 starts to operate. The telescopic part 11 pushes the cavity pressing plate 2 to move downward along the guide post 6, so that the sealing ring 22 on the lower surface of the cavity pressing plate 2 is tightly combined with the tank opening of the empty tank 8, preventing the detection gas from leaking and affecting the detection result.

[0057] One end of the intake port of the first air pump 40 is connected to the detection gas container 41. During detection, the first air pump 40 extracts the detection gas from the detection gas container 41. The exhaust port of the first air pump 40 is connected to the inflation hose 4, and the inflation hose 4 is inserted into the air passage 25 of the cavity pressing plate 2 through the inflation hole 20 opened on the side of the cavity pressing plate. Thus, the detection gas enters the air passage 25 of the cavity pressing plate chamber 2 through the first air pump 40 and the inflation hose 4.

[0058] A communication hole 21 is opened on the lower surface of the cavity pressing plate 2. The communication hole 21 is arranged within the range of the lower surface where the sealing ring 22 is located. Therefore, during detection, the detection gas in the cavity pressing plate 2 can enter the empty tank 8 through the communication hole 21.

[0059] During the detection process, the low-level nitrogen sensor 70 and the high-level nitrogen sensor 71 can detect the concentration of nitrogen around the empty tank. Although there is a small amount of nitrogen in the air, it does not affect the detection result. If the nitrogen concentration changes, the alarm lamp 72 will light up to remind the staff that there is a problem with the airtightness of this empty tank.

[0060] After the detection is completed, the first air pump 40 connected to the detection gas container stops working and stops supplying gas. At this time, the second air pump 50 with its exhaust port connected to the gas collection container is started. One end of the intake port of the second air pump is connected to the air extraction hose 5. The air extraction hose 5 is inserted into the air duct 25 through the air extraction hole 24 opened on the other side of the cavity pressing plate 2. Thus, the detection gas is extracted from the air duct 25 and the empty tank 8 by the second air pump 50 through the air extraction hose 5 and enters the gas collection container 51, completing the collection of the detection gas, realizing the reuse of the detection gas, and reducing the impact on the environment.

[0061] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An empty can air tightness detection device, comprising a base (3), characterized in that: The upper surface of the base (3) is provided with a vertical guide column (6), and a cavity pressure plate (2) is mounted on the guide column (6) and can slide up and down along the guide column (6). The base (3) also includes an upper and lower telescopic assembly (1), and the upper and lower telescopic assembly (1) includes a fixed portion (10) and a telescopic portion (11). The upper end of the guide column (6) is connected to the fixed portion (10), and the telescopic portion (11) is arranged in the fixed portion (10), and the telescopic portion (11) is connected to the upper surface of the cavity pressure plate (2). The inflation hose (4) passes through one side of the cavity pressure plate (2) and is inserted into the cavity pressure plate (2), and the other side of the cavity pressure plate (2) is inserted into an exhaust hose (5) capable of conveying gas. A connecting hole (21) connecting the empty tank (8) and the airway (25) is provided below the cavity pressure plate (2).

2. The empty can air tightness detection device according to claim 1, characterized in that: The cavity pressure plate (2) has an air passage (25) inside, and an inflation hole (20) is provided on one side of the cavity pressure plate (2) for inserting an inflation hose (4) into the air passage, and an exhaust hole (24) is provided on the other side for inserting an exhaust hose (5) into the air passage. A sealing ring (22) is provided on the lower surface of the cavity pressure plate (2), and the sealing ring (22) matches the mouth of the empty can (8). A connecting hole (21) is provided on the lower surface of the sealing ring (22). A guide hole (23) is provided at a position of the cavity pressure plate (2) that is not an air passage, for allowing a guide column (6) to pass through.

3. The empty tank air tightness detection device according to claim 1, characterized in that: A positioning groove (30) is provided on the upper surface of the base (3), and the position of the positioning groove (30) corresponds to the position of the sealing ring (22) on the lower surface of the cavity pressure plate (2).

4. The empty can air tightness detection device according to claim 1, characterized in that: The invention also comprises a detection mechanism (7), wherein the detection mechanism (7) comprises a low nitrogen sensor (70), a high nitrogen sensor (71), and an alarm light (72), wherein the low nitrogen sensor (70) is arranged on the inner side of the connection between the guide column (6) and the base (3), the high nitrogen sensor (71) is arranged on the inner side of the guide column (6) and at a height equal to that of the empty tank (8), and the alarm light (72) is arranged on the upper surface of the base (3), and the low nitrogen sensor (70), the high nitrogen sensor (71), and the alarm light (72) are electrically connected.

5. The empty can air tightness detection device according to claim 2, characterized in that: One end of the inflation hose (4) is sealedly connected to the exhaust port of the first vacuum pump (40), and the other end is inserted into the air passage (25) of the cavity pressure plate (2) through the inflation hole (20). The air inlet of the first vacuum pump (40) is connected to the detection gas container (41).

6. The empty can air tightness detection device according to claim 2, characterized in that: One end of the vacuum hose (5) is connected to the air inlet of the second vacuum pump (50), and the other end is inserted into the air passage (25) of the cavity pressure plate (2) through the vacuum hole (24). The exhaust port of the second vacuum pump (50) is connected to the gas collection container (51) via a pipeline.

7. The empty can air tightness detection device according to claim 2, characterized in that: A sealing ring is provided between the inflation hose (4) and the inflation hole (20).

8. The empty can air tightness detection device according to claim 2, characterized in that: A sealing ring is provided between the air extraction hose (5) and the air extraction hole (24).

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