Air tightness detection device for fire mask

Abstract

The utility model belongs to the technical field of fire-fighting masks, and particularly discloses an air tightness detection device for a fire-fighting mask, which comprises a device frame, a detection table is fixedly mounted in the device frame, a hollow head mold is arranged in the detection table, an air pump is fixedly mounted on the inner side of the device frame, and a gas outlet is formed in the inner side of the air pump. The device comprises a device frame, a pressure detector is fixedly installed on the device frame, a bottom end suction cup rod is arranged in the device frame, a mask is adsorbed to the bottom of the bottom end suction cup rod, and an automatic attaching mechanism used for driving the bottom end suction cup rod is arranged in the device frame. According to the air tightness detection device of the fire mask, mechanical elements such as the motor, the transmission device and the conveying belt are introduced, relative automatic detection of the air tightness of the fire mask is achieved, compared with pure manual detection and semi-automatic detection, the air tightness detection device does not depend on experience and skills of operators, the influence of human factors on the detection result is reduced, and the detection efficiency is improved. Therefore, the consistency and the accuracy of the detection result are improved.

Description

Technical Field

[0001] The present application relates to the technical field of fire masks, and in particular to an air tightness detection device for fire masks. Background Art

[0002] Fire masks are protective equipment worn by firefighters at fire scenes or other harmful environments. They are used to protect the faces, eyes and respiratory systems of firefighters from fire smoke, toxic gases and other dangerous substances. The air tightness of fire masks is directly related to the safety of firefighters at fire scenes, so they need to be tested for air tightness.

[0003] At present, the air tightness test of fire masks is basically done manually. The fire mask is installed on the mold of the head, and the pressure is tested by a pressure detector to determine whether there is a leak. Since manual testing relies on the experience and skills of the operator, this may affect the consistency and accuracy of the test results. Utility Model Content

[0004] In view of this, the purpose of the utility model is to solve the shortcomings existing in the background technology and to propose an air tightness detection device for a fire mask to solve the problems existing in the prior art.

[0005] To achieve the above purpose, the utility model provides an air tightness detection device for a fire mask, comprising a device frame, a detection platform is fixedly installed inside the device frame, a hollow head mold is arranged inside the detection platform, an air pump is fixedly installed on the inner side of the device frame, a pressure detector is fixedly installed on the device frame, a bottom suction cup rod is arranged inside the device frame, a mask is adsorbed on the bottom of the bottom suction cup rod, a piston is arranged on the outer surface of the bottom suction cup rod, an automatic attachment mechanism for driving the bottom suction cup rod is arranged inside the device frame, the interior of the hollow head mold is hollow, and changes in air pressure can be detected by the pressure detector, a suction cup is arranged at the bottom of the bottom suction cup rod to facilitate adsorption of the mask, and the air supply end of the air pump is passed into the interior of the detection platform to facilitate the airflow into the interior.

[0006] Preferably, the automatic attachment mechanism includes a motor fixedly installed inside the device frame, and the output end of the motor is fixedly connected to a driving wheel. The automatic attachment mechanism can drive the bottom suction cup rod to move downward, thereby tightly attaching the mask at the bottom end of the bottom suction cup rod to the hollow head mold.

[0007] Preferably, the outer surface of the driving wheel is slidably connected to a conveyor belt, and the end of the conveyor belt surface away from the driving wheel is slidably connected to a driven wheel.

[0008] Preferably, a fixing frame is fixedly connected to the inner side of the device frame, a rotating frame is rotatably connected to the inner surface of the fixing frame, and one end of the rotating frame is fixedly connected to the axis of the driven wheel.

[0009] Preferably, the outer surface of the rotating frame is rotatably connected to a driving strip, the top of the bottom suction cup rod is fixedly penetrated by an end shaft, and the outer surface of the end shaft is rotatably connected to the bottom end of the driving strip.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] 1. The air tightness detection device of the fire mask realizes relatively automatic detection of the air tightness of the fire mask by introducing mechanical components such as motors, transmission devices and conveyor belts. Compared with pure manual detection, semi-automatic detection does not rely on the experience and skills of the operator, reduces the influence of human factors on the detection results, and thus improves the consistency and accuracy of the detection results.

[0012] 2. The air tightness detection device of the fire mask can quickly push the fire mask into the detection table for detection, or take it out of the detection table for replacement through the automatic attachment mechanism, ensuring that the mask is not damaged during the pushing or taking out process, ensuring the integrity and safety of the mask, and at the same time speeding up the speed of the entire detection process, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of this application;

[0014] Figure 2 This is a schematic diagram of the internal structure of the test bench for this application;

[0015] Figure 3 This is a schematic diagram of the surface structure of the fixing frame of this application;

[0016] Figure 4 This is a schematic diagram of the surface structure of the rotating rack of this application.

[0017] Among them: 1. Device frame; 2. Testing table; 3. Hollow head mold; 4. Air pump; 5. Pressure tester; 6. Bottom suction cup rod; 7. Mask; 8. Piston; 9. Motor; 10. Driving wheel; 11. Conveyor belt; 12. Driven wheel; 13. Fixed frame; 14. Rotating frame; 15. Driving strip; 16. End shaft. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0019] See also Figure 1-4 A device for detecting air tightness of a fire mask comprises a device frame 1, a detection platform 2 is fixedly installed inside the device frame 1, a hollow head mold 3 is arranged inside the detection platform 2, an air pump 4 is fixedly installed on the inner side of the device frame 1, a pressure detector 5 is fixedly installed on the device frame 1, a bottom suction cup rod 6 is arranged inside the device frame 1, a mask 7 is adsorbed on the bottom of the bottom suction cup rod 6, a piston 8 is arranged on the outer surface of the bottom suction cup rod 6, and an automatic attachment mechanism for driving the bottom suction cup rod 6 is arranged inside the device frame 1.

[0020] Through the above technical solution, when the device is in use, the fire mask 7 to be tested is installed on the bottom end of the bottom suction cup rod 6. The bottom suction cup rod 6 can be pushed downward by the automatic attachment mechanism until the mask 7 is attached to the hollow head mold 3, and the piston 8 is cooperated to relatively seal the inside of the test platform 2. The air flow is injected into the inside of the test platform 2 through the air pump 4, and finally the pressure change inside the hollow head mold 3 is detected by the pressure detector 5.

[0021] Specifically, the automatic attachment mechanism includes a motor 9 fixedly installed inside the device frame 1 , and an output end of the motor 9 is fixedly connected to a driving wheel 10 .

[0022] Through the above technical solution, after the motor 9 is turned on to drive the driving wheel 10 to rotate, the force and motion can be transmitted through the conveyor belt 11, so that the driven wheel 12 rotates synchronously.

[0023] Specifically, the outer surface of the driving wheel 10 is slidably connected to the conveyor belt 11 , and the end of the surface of the conveyor belt 11 away from the driving wheel 10 is slidably connected to the driven wheel 12 .

[0024] Through the above technical solution, the driven wheel 12 will link the rotating frame 14 to rotate on the fixed frame 13 during the rotation process.

[0025] Specifically, a fixing frame 13 is fixedly connected to the inner side of the device frame 1 , a rotating frame 14 is rotatably connected to the inner surface of the fixing frame 13 , and one end of the rotating frame 14 is fixedly connected to the axis of the driven wheel 12 .

[0026] Through the above technical solution, the fixed frame 13 provides support for the rotating frame 14 and facilitates the rotating frame 14 to smoothly perform circular motion.

[0027] Specifically, the outer surface of the rotating frame 14 is rotatably connected to the driving bar 15 , and the top of the bottom suction cup rod 6 is fixedly penetrated by an end shaft 16 , and the outer surface of the end shaft 16 is rotatably connected to the bottom end of the driving bar 15 .

[0028] Through the above technical solution, when the driving bar 15 swings during the rotation of the rotating frame 14, the bottom suction cup rod 6 can be driven.

[0029] Working principle: When the device is testing the air tightness of the fire mask 7, the bottom of the bottom suction cup rod 6 can absorb the mask 7. At this time, the motor 9 is turned on to drive the driving wheel 10 to rotate, and the driven wheel 12 can be driven to rotate through the conveyor belt 11, thereby linking the rotating frame 14 to rotate. During the rotation of the rotating frame 14, the top of the driving bar 15 will rotate along it, and the bottom end of the driving bar 15 will rotate along the end shaft 16. During this process, the driving bar 15 will deflect and push the bottom suction cup rod 6 through the end shaft 16, so that the bottom suction cup rod 6 moves downward until the mask 7 at the bottom of the bottom suction cup rod 6 is completely and stably attached to the hollow head mold 3. At this time, the contact parts between the mask 7 and the hollow head mold 3 are both It fits tightly (that is, the edge contact position of the mask 7 has good sealing), and the piston 8 is inside the testing platform 2, which is sealed, and finally air is introduced into the testing platform 2 through the air pump 4. At this time, the internal pressure of the hollow head mold 3 is detected by the pressure detector 5. If the mask 7 has good sealing, the airflow will not pass through the mask 7 into the hollow head mold 3, that is, the airflow pressure in the hollow head mold 3 will not change. If the mask 7 has insufficient sealing, the airflow can pass through the mask 7 into the hollow head mold 3, thereby changing its internal pressure, that is, it shows that this fire mask 7 has an airtightness problem. The entire device can easily complete the airtightness detection of the fire mask 7 without excessive manual intervention.

[0030] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An air tightness detection device for a fire mask, comprising a device frame (1), characterized in that: A detection platform (2) is fixedly installed inside the device frame (1), a hollow head mold (3) is arranged inside the detection platform (2), an air pump (4) is fixedly installed on the inner side of the device frame (1), a pressure detector (5) is fixedly installed on the device frame (1), a bottom suction cup rod (6) is arranged inside the device frame (1), a mask (7) is adsorbed on the bottom of the bottom suction cup rod (6), a piston (8) is arranged on the outer surface of the bottom suction cup rod (6), and an automatic attachment mechanism for driving the bottom suction cup rod (6) is arranged inside the device frame (1).

2. The air tightness detection device for a fire mask according to claim 1, characterized in that: The automatic attachment mechanism comprises a motor (9) fixedly mounted inside the device frame (1), and an output end of the motor (9) is fixedly connected to a driving wheel (10).

3. The air tightness detection device for a fire mask according to claim 2, characterized in that: The outer surface of the driving wheel (10) is slidably connected to a conveyor belt (11), and the end of the surface of the conveyor belt (11) away from the driving wheel (10) is slidably connected to a driven wheel (12).

4. The air tightness detection device for a fire mask according to claim 3, characterized in that: A fixing frame (13) is fixedly connected to the inner side of the device frame (1), a rotating frame (14) is rotatably connected to the inner surface of the fixing frame (13), and one end of the rotating frame (14) is fixedly connected to the axis of the driven wheel (12).

5. The air tightness detection device for a fire mask according to claim 4, characterized in that: The outer surface of the rotating frame (14) is rotatably connected to a driving strip (15), and a terminal shaft (16) is fixedly penetrated through the top of the bottom suction cup rod (6), and the outer surface of the terminal shaft (16) is rotatably connected to the bottom end of the driving strip (15).

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