Welding mask

Abstract

The utility model discloses a welding mask which comprises a mask body, one side of the mask body is in bolted connection with a light filtering protection cover, the side wall of the mask body is fixedly connected with a head sleeve elastic band, the side wall of the mask body is fixedly connected with a breathing tube, the side wall of the breathing tube is fixedly connected with an air inlet cover, and the top of the breathing tube is provided with a pair of fixing grooves. Fixing grooves are formed in the breathing tube, a filter plate and a polytetrafluoroethylene filter plate are arranged in the fixing grooves respectively, an adjusting groove is formed in the portion, located between the fixing grooves, in the breathing tube, and a limiting plate is arranged in the adjusting groove. Then a pull rod is rotated in an arc-shaped groove, so that a limiting plate is rotated to the position, far away from the top of a fixed plate, in an adjusting groove, a pull rod can be pulled to pull out a filter plate and a polytetrafluoroethylene filter plate for cleaning or replacement, and the convenience performance of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding masks, in particular to a welding mask. Background Art

[0002] Welding arcs are often generated during the metal welding process. This welding arc is a strong visible light. Welders cannot look directly at the welding arc during welding, otherwise it will burn the retina and cause retinitis. Therefore, welders need to wear welding masks for protection during welding.

[0003] The welding mask with publication number CN219089902U can be adjusted according to the wearer's head circumference by setting an adjustment belt, a fixing block, Velcro round hairs and Velcro bristles. Under the joint action of the respirator shell, vents, filter net, filter box, breathing place and polytetrafluoroethylene filter membrane, the inhaled air is filtered multiple times.

[0004] However, in actual use, since the filter screen and filter membrane are fixedly installed inside the respirator shell, when the welding mask is used for a long time and the filtering effect of the filter membrane deteriorates and needs to be replaced, or when the filter screen filters too many impurities and the air permeability decreases and needs to be removed and cleaned, it becomes rather troublesome, greatly reducing the convenience of the device.

[0005] Therefore, a welding mask is designed and produced here to solve the problem that it is inconvenient to clean and replace the filter screen and filter membrane. Utility Model Content

[0006] The technical problem to be solved by the utility model is as follows: However, in actual use, since the filter screen and the filter membrane are fixedly installed inside the respirator shell, when the welding mask is used for a long time, the filtering effect of the filter membrane becomes poor and needs to be replaced, or the filter screen filters too many impurities and the air permeability decreases and needs to be taken out and cleaned, it becomes rather troublesome and greatly reduces the convenience of the device. Therefore, a welding mask is proposed.

[0007] The technical solution adopted by the utility model to solve the technical problem is: a welding mask, comprising a mask body, a light filtering protective cover is bolted to one side of the mask body, a head cover elastic band is fixedly connected to the side wall of the mask body, a breathing tube is fixedly connected to the side wall of the mask body, an air intake hood is fixedly connected to the side wall of the breathing tube, a pair of fixing grooves are provided at the top of the breathing tube, a filter plate and a polytetrafluoroethylene filter plate are respectively provided inside the fixing grooves, an adjustment groove is provided inside the breathing tube and between the fixing grooves, a limit plate is provided inside the adjustment groove, a screw is threadedly connected to the top of the breathing tube, the bottom of the screw is rotatably connected to the bottom end of the limit plate, an arc groove is provided at the top of the breathing tube, and a pull rod is fixedly connected to the top of the limit plate and at a position corresponding to the arc groove;

[0008] The screw is rotated to move upward, and the limit plate is driven to slide upward to release the squeeze on the fixed plate. The pull rod is then rotated inside the arc groove to rotate the limit plate to a position inside the adjustment groove away from the top of the fixed plate. The pull rod can be pulled to remove the filter plate and the polytetrafluoroethylene filter plate for cleaning or replacement.

[0009] Preferably, the filter plate and the polytetrafluoroethylene filter plate are both fixedly connected to the top with a fixing plate, and the top of the fixing plate is fixedly connected to a pull rod. The setting of the pull rod facilitates the quick removal of the filter plate and the polytetrafluoroethylene filter plate for cleaning or replacement, thereby improving the convenience of the device.

[0010] Preferably, a sealing ring is fixedly connected to the bottom of the fixed plate. When installing the filter plate and the polytetrafluoroethylene filter plate, the limit plate is driven to slide downward by rotating the screw in the opposite direction to push the fixed plate downward to squeeze the sealing ring, thereby achieving a sealed installation of the filter plate and the polytetrafluoroethylene filter plate, preventing exhaust gas from entering the breathing tube from the fixed groove during welding, which would harm the health of the welder.

[0011] Preferably, a fitting cover is fixedly connected to the side wall of the breathing tube away from the air intake cover, and the side wall of the fitting cover is provided with a rubber ring adapted to the side wall of the fitting cover. The rubber ring can not only increase the sealing performance when the welder's face and the fitting cover are fitted, but also increase the comfort of the welder wearing the rubber ring because the rubber ring is made of a soft material.

[0012] Preferably, the outer wall of the fitting cover is fixedly connected to a limiting ring, and the inner wall of the rubber ring is provided with a limiting groove matched with the limiting ring. The rubber ring is clamped on the outer wall of the limiting ring through the limiting groove, and the rubber ring can be quickly taken out for replacement, which is convenient for replacing the rubber ring when multiple people use the welding mask, making the use of the welding mask more hygienic.

[0013] Compared with the prior art, the utility model has the following beneficial effects: by rotating the screw rod to move upward, the limit plate is driven to slide upward, the extrusion of the fixed plate is released, and then the pull rod is rotated inside the arc groove, so that the limit plate is rotated to a position inside the adjustment groove away from the top of the fixed plate, and the pull rod can be pulled out to remove the filter plate and the polytetrafluoroethylene filter plate for cleaning or replacement, thereby improving the convenience of the device;

[0014] The rubber ring provided can not only increase the sealing performance when the welder's face and the fitting mask are fitted, but also increase the wearing comfort of the welder due to the soft material of the rubber ring. At the same time, the rubber ring is clamped on the outer wall of the limiting ring through the limiting groove, and the rubber ring can be quickly taken out for replacement, which is convenient for replacing the rubber ring when multiple people use the welding mask, making the use of the welding mask more hygienic. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front half-section structure of the welding mask of the utility model;

[0016] Figure 2 It is a partial enlarged structural schematic diagram of A of the utility model;

[0017] Figure 3 This is a schematic diagram of the top view of the breathing tube of the utility model;

[0018] Figure 4 It is a schematic diagram of the overall appearance structure of the fitting cover of the utility model.

[0019] In the figure: 1. mask body; 2. filter protection cover; 3. head cover elastic belt; 4. breathing tube; 5. air intake cover; 6. fixing groove; 7. filter plate; 8. polytetrafluoroethylene filter plate; 9. adjustment groove; 10. limit plate; 11. screw; 12. arc groove; 13. pull rod; 14. fixing plate; 15. pull rod; 16. sealing ring; 17. fitting cover; 18. rubber ring; 19. limit ring; 20. limit groove. DETAILED DESCRIPTION

[0020] The utility model will be further described below in conjunction with the accompanying drawings.

[0021] Example 1

[0022] See also Figure 1-4 The present embodiment provides a welding mask, comprising a mask body 1, a filter protection cover 2 bolted to one side of the mask body 1, a head cover elastic belt 3 fixedly connected to the side wall of the mask body 1, a breathing tube 4 fixedly connected to the side wall of the mask body 1, an air intake cover 5 fixedly connected to the side wall of the breathing tube 4, a pair of fixed grooves 6 are opened at the top of the breathing tube 4, and a filter plate 7 and a polytetrafluoroethylene filter plate 8 are respectively arranged inside the fixed grooves 6. When in use, the mask body 1 is first worn on the head through the head cover elastic belt 3, and the eyes are aligned with the filter protection cover 2 at the same time, and then the area around the mouth is aligned with the outer wall of the fitting cover 17, and welding can be performed. During the welding process, the filter protection cover 2 is used to block the strong light generated during welding to prevent the welder's eyes from directly looking at the welding arc and causing damage. At the same time, the impurities in the incoming gas are filtered by the filter plate 7, and the incoming gas is secondary filtered by the polytetrafluoroethylene filter plate 8, which effectively reduces the harm to the welder's body caused by harmful gases and dust released by welding, and prevents the occurrence of pneumoconiosis occupational diseases.

[0023] The adjusting groove 9 is opened inside the breathing tube 4 and is located between the fixing grooves 6. The limiting plate 10 is arranged inside the adjusting groove 9. The screw 11 is threadedly connected to the top of the breathing tube 4. The bottom of the screw 11 is rotatably connected to the bottom end of the limiting plate 10. The arc groove 12 is opened at the top of the breathing tube 4. The pulling rod 13 is fixedly connected to the top of the limiting plate 10 and corresponds to the arc groove 12. The fixing plate 14 is fixedly connected to the top of the filter plate 7 and the polytetrafluoroethylene filter plate 8. The pulling rod 15 is fixedly connected to the top of the fixing plate 14. The sealing ring 16 is fixedly connected to the bottom of the fixing plate 14.

[0024] When the welding helmet is used for a long time and the filter plate 7 and the polytetrafluoroethylene filter plate 8 need to be taken out for cleaning or replacement, firstly, the screw rod 11 is rotated to move upward in a spiral manner, and at the same time, the limit plate 10 is driven to slide upward to release the squeezing of the fixed plate 14, and then the pull rod 13 is rotated inside the arc groove 12, so that the limit plate 10 is rotated to a position inside the adjustment groove 9 away from the top of the fixed plate 14, and then the pull rod 15 can be pulled out to remove the filter plate 7 and the polytetrafluoroethylene filter plate 8 for cleaning or replacement, thereby improving the convenience performance of the device;

[0025] When installing the filter plate 7 and the polytetrafluoroethylene filter plate 8, first insert the filter plate 7 and the polytetrafluoroethylene filter plate 8 into the fixed groove 6, then rotate the pull rod 13 to rotate inside the arc groove 12, rotate the two sides of the limit plate 10 to above the fixed plate 14, and then rotate the screw rod 11 in the opposite direction to move the limit plate 10 downward to slide downward, and then push the fixed plate 14 downward to squeeze the sealing ring 16, so as to achieve the sealed installation of the filter plate 7 and the polytetrafluoroethylene filter plate 8, avoid exhaust gas from entering the breathing tube 4 from the fixed groove 6 during welding, and cause harm to the health of the welder, and solve the technical problem that it is inconvenient to clean and replace the filter plate 7 and the polytetrafluoroethylene filter plate 8 in the prior art.

[0026] Example 2

[0027] See also Figure 1-4 , further improvements were made on the basis of Example 1:

[0028] Among them, the fitting cover 17 is fixedly connected to the side wall of the breathing tube 4 and away from the side of the air intake cover 5, and the rubber ring 18 adapted to the side wall of the fitting cover 17 is arranged on the side wall of the fitting cover 17. The rubber ring 18 can not only increase the sealing performance when the welder's face and the fitting cover 17 are fitted, but also increase the comfort of the welder wearing it because the rubber ring 18 is made of a soft material.

[0029] Among them, the limiting ring 19 is fixedly connected to the outer wall of the fitting cover 17, and the limiting groove 20 adapted to the limiting ring 19 is opened on the inner wall of the rubber ring 18. The rubber ring 18 is clamped on the outer wall of the limiting ring 19 through the limiting groove 20. At the same time, according to the elasticity of the rubber ring 18 itself, the rubber ring 18 can be quickly taken out for replacement, which is convenient for replacing the rubber ring 18 when multiple people use the welding mask, making the use of the welding mask more hygienic.

[0030] The above are only preferred implementations of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

[0031] Other parts of the present invention not described in detail belong to the prior art and will not be described here.

[0032] Finally, 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 aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A welding helmet, comprising a mask body (1), a filter protection cover (2) being bolted to one side of the mask body (1), a headgear elastic band (3) being fixedly connected to the side wall of the mask body (1), a breathing tube (4) being fixedly connected to the side wall of the mask body (1), and an air intake cover (5) being fixedly connected to the side wall of the breathing tube (4), wherein: A pair of fixing grooves (6) are provided at the top of the breathing tube (4), and a filter plate (7) and a polytetrafluoroethylene filter plate (8) are respectively arranged inside the fixing grooves (6). An adjusting groove (9) is provided inside the breathing tube (4) and located between the fixing grooves (6), and a limiting plate (10) is arranged inside the adjusting groove (9). A screw rod (11) is threadedly connected to the top of the breathing tube (4), and the bottom of the screw rod (11) is rotatably connected to the bottom end of the limiting plate (10). An arc groove (12) is provided at the top of the breathing tube (4), and a pulling rod (13) is fixedly connected to the top of the limiting plate (10) and at a position corresponding to the arc groove (12).

2. A welding mask according to claim 1, characterized in that: The tops of the filter plate (7) and the polytetrafluoroethylene filter plate (8) are both fixedly connected to a fixing plate (14), and the top of the fixing plate (14) is fixedly connected to a pull rod (15).

3. A welding mask according to claim 2, characterized in that: The bottom of the fixed plate (14) is fixedly connected with a sealing ring (16).

4. A welding helmet according to claim 1, characterized in that: A fitting cover (17) is fixedly connected to the side wall of the breathing tube (4) and away from the air intake cover (5), and the side wall of the fitting cover (17) is provided with a rubber ring (18) adapted to the side wall of the fitting cover (17).

5. A welding mask according to claim 4, characterized in that: The outer wall of the fitting cover (17) is fixedly connected to a limiting ring (19), and the inner wall of the rubber ring (18) is provided with a limiting groove (20) adapted to the limiting ring (19).

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