Outdoor alcohol lamp air tightness detection tool

Abstract

The utility model discloses an air tightness detection tool for an outdoor alcohol lamp, which relates to the field of air tightness detection and comprises a sealing cover, a sealing seat, an air tightness detector and an air pipe. A horizontal table top is arranged at the lower end of the sealing cover, and an upper sealing rubber mat is attached to the horizontal table top; the inner side of the sealing seat is sleeved with a detachable die holder, and a concave cavity matched with a corresponding alcohol detection lamp is formed in the die holder; the sealing cover is movably arranged above the sealing seat and has the capability of vertically moving towards one side of the sealing seat; a pressurizing hole is formed in the lower end of the sealing cover, an air inlet is formed in the upper portion of the sealing cover, and the pressurizing hole and the air inlet are connected in the sealing cover in a penetrating mode. The air tightness detector is provided with an air source connector and an air outlet, is internally provided with an air pressure sensor, and has the capability of precisely detecting air pressure fluctuation; the air outlet of the air tightness detector is connected with the air inlet through an air pipe, and the air source connector is connected with the air pump to form a communication air path; according to the utility model, the detection process is simplified, and the airtightness detection precision and efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing, specifically a tooling for testing the airtightness of outdoor alcohol lamps. Background Technology

[0002] To ensure their lightweight and portable design, outdoor alcohol lamps often use thin metal sheets as raw materials, which are then processed through stamping and stretching to form a complex hollow cavity structure. However, after the stretching and pressing process, the thin metal sheet in some areas of the alcohol lamp may develop tiny cracks or leakage points due to excessive bending angles and numerous characteristic surfaces. This poses a safety hazard for storing alcohol and for igniting the lamp, necessitating airtightness testing to ensure reliable sealing.

[0003] Currently, airtightness testing generally uses the water-filling observation method, which involves filling the container under test with water and observing whether it leaks. This method is slow, inefficient, and not very effective at detecting tiny leaks. Therefore, a sensitive and efficient method is needed to detect potential leaks. Utility Model Content

[0004] This utility model provides an outdoor alcohol lamp airtightness testing fixture. It pressurizes the alcohol lamp canister by introducing air and pressurizing it. By detecting the change in air pressure inside the canister using an air pressure sensor, it can determine whether there is a leak in the alcohol lamp canister, enabling accurate detection of even the smallest leaks.

[0005] An outdoor alcohol lamp air tightness testing fixture includes a sealing cap, a sealing seat, an air tightness tester, and an air tube.

[0006] The lower end of the sealing cover has a horizontal platform, and an upper sealing gasket is fitted onto the horizontal platform.

[0007] The inner side of the sealing seat is fitted with a detachable mold base, and the inside of the mold base has a recessed cavity that matches the corresponding alcohol lamp for testing.

[0008] The sealing cover is movably positioned above the sealing seat and has the ability to move vertically to one side of the sealing seat.

[0009] The lower end of the sealing cap has a pressure hole, and the upper part of the sealing cap has an air inlet. The pressure hole and the air inlet are connected through the inside of the sealing cap.

[0010] The airtightness tester is equipped with an air source connection port and an air outlet, and has an internal air pressure sensor that can accurately detect air pressure fluctuations. The air outlet and air inlet of the tester are connected via an air tube, and the air source connection port is connected to an air pump, forming a continuous air path.

[0011] As a further improvement of this utility model, it also includes a frame and a lifting device. The frame has two platforms, upper and lower, connected by uprights. The sealing seat is fixedly installed on the upper surface of the lower platform. The sealing cover is located directly above the sealing seat and below the upper platform. The lifting device is fixedly installed on the upper platform, and the output end of the lifting device is fixedly connected to the sealing cover, enabling it to drive the sealing cover to perform vertical lifting and lowering movements.

[0012] As a further improvement of this utility model, the lower platform of the frame is provided with a lifting button for controlling the lifting device and an emergency stop button for cutting off the gas supply to the device.

[0013] As a further improvement of this utility model, there are two lifting buttons, which are respectively located on the left and right sides of the lower platform. When both lifting buttons are pressed at the same time, the lifting device can be driven to operate.

[0014] As a further improvement of this utility model, the lifting device is a cylinder, and an actuating solenoid valve is installed on the cylinder. The actuating solenoid valve is connected to and controls an external air source, and the cylinder is driven by the external air source. The actuating solenoid valve is electrically connected to the lifting button.

[0015] As a further improvement of this utility model, a movable guide rod is vertically installed through the upper platform of the frame. The lower end of the guide rod is located on the lower side of the upper platform and is fixedly connected to the outside of the sealing cover by a crossbar, so that it can move up and down synchronously with the sealing cover.

[0016] As a further improvement of this utility model, a pressure-bearing rubber pad is fitted and installed at the upper end of the recessed cavity of the mold base.

[0017] As a further improvement of this utility model, the bottom outer edge of the mold base is chamfered, and the sealing seat is provided with a through vent hole at the position corresponding to the chamfer of the mold base when it is assembled.

[0018] This utility model discloses an outdoor alcohol lamp airtightness testing fixture. It utilizes a sealing cap and a sealing gasket to achieve a tight seal between the alcohol lamp and the lamp. An airtightness detector introduces gas into the lamp through a central pressure hole in the sealing cap and monitors pressure changes. Based on changes in the pressure sensor, it automatically detects any leaks. Compared to the water-filling leak detection method, this significantly reduces the difficulty of judgment and improves testing accuracy and efficiency. Furthermore, the internal mold of the sealing seat is removable and replaceable, allowing for the use of molds with different internal cavity sizes to perform airtightness testing on alcohol lamps of various sizes, thus achieving fixture versatility. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall tooling of this utility model;

[0020] Figure 2 This is a schematic diagram showing the installation relationship between the sealing cap, sealing seat, and their auxiliary components of this utility model;

[0021] Figure 3 This is a schematic diagram of a half-section of the sealing cap of this utility model;

[0022] Figure 4 This is a schematic diagram of the vent hole at the bottom of the sealing seat of this utility model;

[0023] Figure 5 This is a schematic diagram of the rear air passage connection relationship of this utility model;

[0024] Figure 6 This is a schematic diagram of the frame structure of this utility model;

[0025] Figure 7 This is a schematic diagram of the appearance of the alcohol lamp tested under this utility model.

[0026] Figure 8 This is a schematic diagram of a half-section of the alcohol lamp tested according to this utility model.

[0027] 1. Sealing cover; 2. Sealing seat; 3. Air tightness tester; 4. Frame; 5. Cylinder; 101. Upper sealing gasket; 102. Pressurization hole; 103. Air inlet; 201. Pressure bearing gasket; 202. Mold base; 203. Vent hole; 301. Air source connection port; 302. Air outlet; 401. Lifting button; 402. Emergency stop button; 403. Guide rod. Detailed Implementation

[0028] Specific Implementation Example 1: As shown in the example Figure 1 The outdoor alcohol lamp air tightness testing fixture shown is characterized by comprising a sealing cover 1, a sealing seat 2, an air tightness tester 3, a frame 4, an air pipe, and a cylinder 5.

[0029] The frame 4 includes two rectangular platforms, upper and lower. Two uprights are mounted on each of the left and right sides of the lower platform, with their upper ends fixedly connected to the upper platform. On the front side of the lower platform, there are two lifting buttons 401, one on each side. The emergency stop button 402 is located between the two lifting buttons 401 and can cut off the gas supply to the device in an emergency.

[0030] Cylinder 5 is fixedly mounted in the middle of the upper platform of frame 4. The cylinder rod extends downward through the upper platform of frame 4 to the middle position between the upper and lower platforms of the frame. An actuation solenoid valve is installed on cylinder 5, which is connected to and controls an external air source, driving cylinder 5. The actuation solenoid valve is electrically connected to lifting buttons 401; when both lifting buttons 401 are pressed simultaneously, the cylinder rod extends downward.

[0031] The sealing cap 1 is a cylindrical part with a tapered upper part that is fixedly connected to the end of the cylinder rod, driving it to move vertically up and down. Figure 3 As shown, a tubular structure extends downward from the center of the bottom, with a pressure hole 102 at the center of the tubular structure leading to the interior of the sealing cover 1. The upper conical part of the sealing cover 1 has an oblique air inlet 103 at the conical surface, leading to the interior of the sealing cover 1. The air inlet 103 and the pressure hole 102 are interconnected inside the sealing cover 1. An annular upper sealing gasket 101 fits snugly with the tubular structure of the sealing cover 1, with the upper surface of the upper sealing gasket 101 tightly adhering to the lower surface of the sealing cover 1.

[0032] The sealing seat 2 is a cylindrical part, located on the lower platform of the frame 4, directly below the sealing cover 1. It has a circular, flared edge at the bottom for fixed connection with the lower platform of the frame 4. Inside the sealing seat 2, a cylindrical recess forms a cylindrical cavity, within which a detachable cylindrical mold base 202 is installed. The mold base 202 has a recessed cavity at its center that matches the shape of an alcohol lamp. By replacing mold bases 202 with different cavity sizes, installation and testing of alcohol lamps of different sizes can be achieved. An annular pressure-bearing rubber pad 201 is fitted along the upper edge of the mold base 202. After installation, the upper surface of the pressure-bearing rubber pad 201 is higher than the upper edge of the mold base 202.

[0033] The air tightness tester 3 has an air source connection port 301 and an air outlet 302 on its back. Through an air tube, the air outlet 302 of the air tightness tester 3 is connected to the air inlet 103, and the air source connection port 301 is connected to the air pump, forming a connected air path. The air tightness tester 3 is equipped with an internal air pressure sensor, which can accurately detect air pressure fluctuations.

[0034] Working principle:

[0035] Alcohol lamp products for target detection, such as Figures 7-8 As shown, at the side extrusion thread at the upper edge and at the lower outward-facing edge, there is a possibility of minor leaks due to excessive bending angle caused by the tensile and compressive deformation of the raw metal plate. During testing, an alcohol lamp is fitted into a mold base 202 of the corresponding size, with the outward-facing edge of the alcohol lamp overlapping the pressure-bearing rubber pad 201. Simultaneously pressing the two lifting buttons 401 drives the upper cylinder 5 to push the sealing cover 1 down, abutting against the upper edge of the alcohol lamp. Figure 1As shown, under pressure, the upper sealing gasket 101 adheres to and seals the upper opening of the alcohol lamp, while the threaded part and the outward edge of the upper part of the alcohol lamp are exposed, achieving a tight seal of the inner cavity. The airtightness detector 3 is activated, and the air pump supply is connected from the air source connection port 301. After passing through the internal air pressure sensor, the air is output from the air outlet 302, connected via an air pipe, and input through the air inlet 103 of the sealing cover 1, filling the sealed inner cavity of the alcohol lamp tightly through the pressurization hole 102. If there is a leak at the threaded part and the outward edge of the upper part of the alcohol lamp, the air pressure sensor inside the airtightness detector 3 can determine the presence of a leak by the air pressure difference between the front and rear ends of the air source connection port 301 and the air outlet 302, thus identifying a defective product.

[0036] Specific Implementation Example 2: Based on Specific Implementation Example 1, such as Figure 1 and Figure 5 As shown, a movable guide rod 403 is vertically installed through the upper platform of the frame 4. The lower end of the guide rod 403 is located on the lower side of the upper platform and is fixedly connected to the outside of the sealing cover 1 via a crossbar. It can move up and down synchronously with the sealing cover 1 to form a frame structure. The frame structure formed by the guide rod 403 enables the sealing cover 1 to move more smoothly when pushed by the cylinder rod, preventing the shaking generated during movement from affecting the sealing effect after contact.

[0037] Specific Implementation Example 3: Based on Specific Implementation Example 1 and Specific Implementation Example 2, such as Figure 2 and Figure 4 As shown, a rounded chamfer is made at the bottom of the mold base 202, and a through vent 203 is made at the bottom of the sealing seat 2, corresponding to the position of the chamfer when the mold base 202 is assembled, so as to realize the air pressure communication between the mold base 202 and the outside of the sealing seat 2, which facilitates the disassembly and replacement of the mold base 202.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the scope of the invention. All variations, modifications and substitutions within the spirit and principle of the present invention are within the protection scope of the present utility model.

Claims

1. A fixture for testing the airtightness of outdoor alcohol lamps, characterized in that: Includes a sealing cap (1), a sealing seat (2), an airtightness tester (3), and an air tube; The lower end of the sealing cap (1) is provided with a horizontal platform surface, and an upper sealing gasket (101) is fitted and installed at the horizontal platform surface. The inner side of the sealing seat (2) is fitted with a detachable mold base (202), and the mold base (202) has a recessed cavity that matches the corresponding alcohol lamp for testing; The sealing cover (1) is movably disposed above the sealing seat (2) and has the ability to move vertically to one side of the sealing seat (2); The lower end of the sealing cover (1) is provided with a pressure hole (102), and the upper part of the sealing cover (1) is provided with an air inlet (103). The pressure hole (102) and the air inlet (103) are connected through the inside of the sealing cover (1). The air tightness tester (3) is equipped with an air source connection port (301) and an air outlet (302). It is equipped with an internal air pressure sensor, which has the ability to accurately detect air pressure fluctuations. Through the air pipe, the air outlet (302) of the air tightness tester (3) is connected to the air inlet (103), and the air source connection port (301) is connected to the air pump, forming a connected air path.

2. The outdoor alcohol lamp airtightness testing fixture according to claim 1, characterized in that: It also includes a frame (4) and a lifting device; the frame (4) has two platforms connected by a pole, and the sealing seat (2) is fixedly set on the upper surface of the lower platform; the sealing cover (1) is located directly above the sealing seat (2) and below the upper platform, and the lifting device is fixedly set on the upper platform. The output end of the lifting device is fixedly connected to the sealing cover (1) and can drive the sealing cover (1) to make vertical lifting movements.

3. The outdoor alcohol lamp airtightness testing fixture according to claim 2, characterized in that: The lower platform of the frame (4) is provided with a lifting button (401) for controlling the lifting device and an emergency stop button (402) for cutting off the gas supply to the device.

4. The outdoor alcohol lamp airtightness testing fixture according to claim 3, characterized in that: There are two lifting buttons (401), which are located on the left and right sides of the lower platform respectively. When the two lifting buttons (401) are pressed at the same time, the lifting device can be driven to move.

5. The outdoor alcohol lamp airtightness testing fixture according to claim 4, characterized in that: The lifting device is a cylinder (5), and an actuation solenoid valve is installed on the cylinder (5). The actuation solenoid valve is connected to and controls an external air source, and the cylinder (5) is driven by the external air source. The actuation solenoid valve is electrically connected to the lifting button (401).

6. The outdoor alcohol lamp airtightness testing fixture according to claim 2, characterized in that: A movable guide rod (403) is vertically installed on the upper platform of the frame (4); the lower end of the guide rod (403) is located on the lower side of the upper platform and is fixedly connected to the outside of the sealing cover (1) by a crossbar, so that it can move up and down synchronously with the sealing cover (1).

7. The outdoor alcohol lamp airtightness testing fixture according to claim 1, characterized in that: A pressure-bearing rubber pad (201) is fitted and installed at the upper end of the recessed cavity of the mold base (202).

8. The outdoor alcohol lamp airtightness testing fixture according to claim 1, characterized in that: The bottom outer edge of the mold base (202) is chamfered, and the sealing seat (2) is provided with a through vent (203) at the position corresponding to the chamfer of the mold base (202) when it is assembled.

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