CN209332465U

CN209332465U - Welding face guard

Info

Publication number: CN209332465U
Application number: CN201821019301.9U
Authority: CN
Inventors: 王雪娇; 陈亮; 杨涛; 李娜
Original assignee: China Petroleum and Natural Gas Co Ltd
Current assignee: China Petroleum and Natural Gas Co Ltd
Priority date: 2018-06-28
Filing date: 2018-06-28
Publication date: 2019-09-03
Anticipated expiration: 2028-06-28

Abstract

The utility model provides a kind of welding face guard, including mask body, and the two sides of mask body are equipped with fixing piece；Mask body is additionally provided with observation window and control device, and observation window includes framework and is arranged in the intracorporal transparent glasses lens of frame and filter glass, and filter glass is arranged in the outside of transparent glasses lens, and one end of filter glass and observation window passes through shaft articulated connection；Control device includes photosensitive sensor, processor, power supply device and transmission device, photosensitive sensor is arranged on the surface of mask body, power supply device is electrically connected with photosensitive sensor, processor and transmission device, photosensitive sensor and transmission device with processor communication connection, the output connection rotating shaft of transmission device.Arc light when the utility model can be according to welding automatically controls the closing of goggles, and so that goggles is moved to initial position after welding arc light disappears, and then realize the protection to staff, while nor affecting on the normal work of staff.

Description

Welding face guard

Technical field

The utility model relates to weld protection tool technology more particularly to a kind of welding face guard.

Background technique

Electric welding is to melt adjacent weldment by high arc temperature using welding rod to need the place connected that the two is made to connect into one Whole welding manner.Its working principle is that: voltage, strengthening electric current are reduced by the transformer in electric welding machine, and produce electric energy Raw huge electric arc heat melts welding rod and relay part to be welded, and welding rod melting keeps the amalgamation between weldment higher.Electric welding is One of material connection processing economy is applicable in, technologically advanced method.Any two metal material can be almost realized with electric welding Material and the welding between certain metal materials and nonmetallic materials；It can be achieved to spell greatly with small, large size, economical rationality be made Structure；The material of different performance, the characteristics of giving full play to a variety of materials can be used in the different parts of structure.It is welded part tool Have the characteristics that air-tightness is good, light-weight；Electric welding can also be achieved welding ultra-thin, between super-fine material.Method that there are many electric welding, Middle arc welding is most widely used welding method, including manual metal-arc welding, submerged-arc welding, plasma arc welding (PAW), gas tungstun arc welding, molten Change pole gas shielded arc welding etc..

Pernicious gas and splash can be generated when carrying out weld job, while strong arc light also can be to staff Eye damage in the prior art generally protects staff using protective face mask.Protective face mask mainly has hand-held Formula and two kinds of head-type, wherein hand screen includes mask body and grip part, and mask body is equipped with goggles, is used for In weld job to the observation of weld seam；Grip part is generally connected to the lower part of mask；When in use, staff one holds face Cover, the other hand control the trend of welding rod.Fillet gas mask includes mask body and fixing head band, the both ends of fixing head band and mask Ontology is fixedly connected, and fixing head band has certain retractility, to adapt to the demand of different operating personnel.Mask body is equipped with Then goggles carries out weld job in use, staff utilizes fixing head band by mask strap again.

But staff is needed to separate a hand in weld job using hand screen to control mask, if work The reaction speed for making personnel relatively then also suffers from injury of the electric arc arc light to eyes slowly, and the operation difficulty of this mode is larger；It adopts With fillet gas mask, due to being not easy to move in the welding process, goggles has blocked the sight of staff, so that work people Member does not see pad situation, frequently results in dislocation, welding quality is difficult to ensure.

Utility model content

In order to overcome the drawbacks described above under the prior art, the purpose of this utility model is to provide a kind of welding protection faces Cover, the arc light when welding face guard of the utility model can be according to welding automatically controls the closing of goggles, and is welding Arc light makes goggles be moved to initial position after disappearing, and then realizes the protection to staff, while nor affecting on work The normal work of personnel.

The utility model provides a kind of welding face guard, including mask body, and the two sides of the mask body, which are equipped with, to be used In the fixing piece fixed with the head of operating personnel；The mask body is additionally provided with observation window and control device, the observation window Including framework and setting in the intracorporal transparent glasses lens of the frame and filter glass, the filter glass is arranged in the transparent glasses lens Outside, one end of the filter glass and the framework passes through shaft articulated connection；The control device includes light sensor Device, processor, power supply device and transmission device, the photosensitive sensor are arranged on the surface of the mask body, the electricity Source device is electrically connected with the photosensitive sensor, processor and transmission device, and the photosensitive sensor and transmission device are and institute Processor communication connection is stated, the output end of the transmission device connects the shaft.

Welding face guard as described above, optionally, the fixing piece include two fixing belts, two fixing belts It being separately positioned in the left and right sides of the mask body, the both ends of the fixing belt are fixedly connected with the mask body, The fixing belt and the mask body surround a wearing space jointly.

Welding face guard as described above, optionally, the framework of the observation window are vertically arranged in described including four Side wall in mask body, orthogonal between the adjacent side wall, the transparent glasses lens and filter glass are arranged at institute State the one end of framework far from the mask body.

Welding face guard as described above is optionally additionally provided with fan, the fan and institute on the side wall of the framework State power supply device electrical connection.

Welding face guard as described above, optionally, the edge of the mask body are equipped with elastic layer.

Welding face guard as described above, optionally, the power supply device are battery.

Welding face guard as described above, optionally, the lower part of the mask body are also connected with neck guard cover.

Welding face guard as described above is optionally additionally provided with respiratory siphon, and one end of the respiratory siphon connects the face Cover body, the other end are connected after passing through the neck guard cover with caisson.

Welding face guard as described above is optionally additionally provided with filtering between the respiratory siphon and the mask body Device, the filter is interior to be equipped with strainer.

Welding face guard as described above, optionally, the strainer are non-woven fabrics.

Welding face guard provided by the utility model, including mask body, the two sides of mask body be equipped with for work The fixed fixing piece in the head of industry personnel；Mask body is additionally provided with observation window and control device, and observation window includes framework and setting In the intracorporal transparent glasses lens of frame and filter glass, filter glass is arranged in the outside of transparent glasses lens, and the one of filter glass and framework End is articulated and connected by shaft；Control device includes photosensitive sensor, processor, power supply device and transmission device, light sensor Device is arranged on the surface of mask body, and power supply device is electrically connected with photosensitive sensor, processor and transmission device, light sensor Device and transmission device with processor communication connection, the output connection rotating shaft of transmission device.The utility model passes through photosensitive biography Arc light when sensor induction welding, when having detected arc light, photosensitive sensor sends the first inductive signal to processor, at this time Processor control transmission device rotates forward, so that filter glass covered transparent glasses lens, realizes the protection to operating personnel；When After weld job is completed, arc light disappears, photosensitive sensor sends the second inductive signal to processor, the transmission of processor control at this time Device rotates backward, so that filter glass returns to initial position, carries out corresponding operation by transparent glasses lens convenient for staff.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is Some embodiments of the utility model, for those of ordinary skill in the art, without creative efforts, It is also possible to obtain other drawings based on these drawings.

Fig. 1 is the structure diagram for the welding face guard that an embodiment of the present invention provides；

Fig. 2 is the sectional view along A-A of Fig. 1；

Fig. 3 is the structure diagram for the control device that an embodiment of the present invention provides；

Fig. 4 is the structure diagram for the welding face guard that another embodiment of the utility model provides；

Fig. 5 is the structure diagram for the welding face guard that the utility model another embodiment provides；

Fig. 6 is the structure diagram for the welding face guard that another embodiment of the utility model provides.

Appended drawing reference:

100- mask body；110- fixing piece；

120- observation window；121- framework；

122- transparent glasses lens；123- filter glass；

124- fan；130- control device；

131- photosensitive sensor；132- processor；

133- power supply device；134- transmission device；

140- neck guard cover；150- respiratory siphon；

160- filter.

Specific embodiment

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.

Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.In the absence of conflict, following implementation Feature in example and embodiment can be combined with each other.

In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", The orientation or positional relationship of the instructions such as " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is based on the figure Orientation or positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the dress of indication or suggestion meaning It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model Limitation.

In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be It is connected directly, the mutual of connection inside two elements or two elements can also be can be indirectly connected through an intermediary Interactively.For the ordinary skill in the art, it can understand that above-mentioned term is practical new at this as the case may be Concrete meaning in type.

It should be noted that term " first ", " second " are only used for facilitating description different in the description of the present invention, Component, be not understood to indicate or imply ordinal relation, relative importance or implicitly indicate indicated technical characteristic Quantity." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one of the features.

It is heated and pressurizeed the difference of situation when the method for electric welding is according to welding, usually divides melting welding, pressure welding and soldering three classes.

Melting welding is in the welding process pressure generally to be not added and completes to weld weldment seam crossing METAL HEATING PROCESS to molten state The method connect.When melting welding, the filling metal that heat source is added by the metal of weldment seam crossing and when necessary, which melts rapidly, forms molten bath, Molten bath extends with the movement of heat source, forms weld seam after cooling.It is different according to electrically heated method using the melting welding of electric energy, point It is several for arc welding, electroslag welding, electron beam welding and Laser Welding.The applicable surface of melting welding is very wide, uses most in various welding methods Generally, arc welding especially therein.

Pressure welding is (to be heated or not heated) welding method for making weldment seam link together under an increased pressure.In pressure welding Filling metal is generally not added in the process.Pressure welding can be divided into electric resistance welding, ratio-frequency welding, diffusion welding (DW), friction according to the difference of welding mechanism Weldering, supersonic welding etc., wherein most widely used with electric resistance welding.Most press welding methods do not have fusion process, do not have as melting welding The problem of useful alloy melting loss of elements and harmful element immerse weld seam, but the welding condition of pressure welding is harsh, and applicable surface is relatively narrow.

Soldering is to melt posterior synechia weldment with the fusing point material (solder) lower than weldment, is connected to weldment seam after cooling Welding method together.

Electric welding is generally divided into striking, arc manipulation and weld seam three steps of ending.

Specifically, striking includes scratching method and hammering method again.Wherein, scratching method is welding rod to be first directed at weldment, then will weld Item is gently scratched as striking a match on weldment surface, and ignite electric arc, welding rod is then lifted 2~4mm rapidly, and make it stable The method of burning；Hammering method is that electrode tip is aligned to weldment, then curved under wrist, so that welding rod is slightly touched weldment, then fast Welding rod is lifted 2~4mm by speed, and wrist is laid flat after the electric arc that ignites, the method for making electric arc keep stablizing burning.This striking method is not It can make weldment surface scratching, and not limited by weldment surface size, shape, so it is drawing of mainly using in welding process Arc method.But this striking method operation is not easy to grasp, and need to improve qualification.

Arc manipulation is most important link in welding process, it directly affects the appearance forming and inherent quality of weld seam.Electric arc Welding rod has several basic exercises on normal operating face after igniting: being gradually sent into towards molten bath direction, gradually moves along welding direction And horizontal swing.Arc manipulation includes linear manipulation of electrode, linear reciprocation manipulation of electrode, zigzag manipulation of electrode, crescent manipulation of electrode, three again The methods of angular manipulation of electrode and ring shape manipulation of electrode.Wherein, when being welded using linear manipulation of electrode, welding rod is not swung laterally, It moves linearly along welding direction.It is usually used in the butt-weld in the downhand position of I shape groove, the first layer weldering of multilayer welding or multi-pass welding； When being welded using linear reciprocation manipulation of electrode, electrode tip swings back and forth along the longitudinal direction of weld seam.Its feature be speed of welding it is fast, Weld seam is narrow, rapid heat dissipation.The first layer that it is suitable for the biggish multilayer welding of thin plate and play movement welds；It is welded using zigzag manipulation of electrode When connecing, electrode tip does zigzag and continuously swings and move forward, and slightly stops a moment on both sides.The purpose of swing is to control It melts the flowing of metal and obtains necessary weld width, to obtain preferable appearance of weld.This arc manipulation method is in production Using relatively wide, be chiefly used in the welding of thick steel plate, downhand welding, overhead welding, the banjo fixing butt jointing of vertical position welding and vertical position welding corner joint；Using crescent moon When shape manipulation of electrode welds, the end of welding rod swings along welding direction crescent.The speed of swing will be according to weld seam Position, joint form, weld width and welding current value determine, while a moment need to be stopped on connector both sides, this be in order to So that weld edge there are enough fusion penetrations, prevents undercut.The characteristics of this arc manipulation method is that metal molten is good, there is longer heat preservation Time, gas are easy to be precipitated, and slag is also easy to float on face of weld, and weldquality is higher, but welds the weld reinforcement come It is higher.The application range and zigzag manipulation of electrode of this arc manipulation method are essentially identical；When being welded using triangle manipulation of electrode, welding rod The movement of continuous triangle shape is done in end, and constantly moves forward.According to the difference of the form of swing, oblique triangle and positive triangle can be divided into Two kinds of shape, oblique triangle manipulation of electrode is suitable for welding the T junction weld seam of downhand welding and overhead position and has the horizontal position welding of groove to stitch, Advantage is the swing of welding rod can be borrowed to control fusing metal, promotes appearance of weld good.Equilateral triangle manipulation of electrode is only applicable to The vertical position welding of bevelled banjo fixing butt jointing and T junction weld seam, feature are once to weld thicker weld seam section, and weld seam is not easy to produce The defects of raw slag inclusion, is conducive to improve production efficiency；Using ring shape manipulation of electrode weld when, electrode tip continuously do positive circle or Oblique ring shape movement, and constantly move forward.Positive ring shape manipulation of electrode is suitable for welding the downhand weld of thicker weldment, its advantage is that molten bath Long there are the time, molten pool metal temperature is high, is conducive to be dissolved in the precipitation of the gases such as oxygen, the nitrogen in molten bath, floats convenient for slag. Oblique ring shape manipulation of electrode is suitable for putting down, face upward the horizontal position welding seam of position T junction weld seam and banjo fixing butt jointing, its advantage is that it is molten to be conducive to control Change metal to be not influenced by gravitation and generate down and drop down phenomenon, is conducive to appearance of weld.

Weld seam ending includes drawing circle ending method and repeatedly current interruption method again.Wherein, it draws circle ending method and refers to that welding rod moves to welding bead Terminal when, do circular motion using the movement of wrist, break electric arc again until filling up arc crater.This method is welded suitable for slab It connects, it is dangerous to have burn-through for plate sheet welding；When current interruption method refers to that welding rod moves to welding bead terminal repeatedly, put out repeatedly at arc crater Arc, striking for several times, until filling up arc crater.This method is suitable for thin plate and high current is welded, but is not suitable for basic electrode, Otherwise stomata can be generated.

It is described below in conjunction with the detailed content to the utility model of attached drawing, so that those skilled in the art can The more detailed content for understanding the utility model.

Fig. 1 is the structure diagram for the welding face guard that an embodiment of the present invention provides；Fig. 2 is the A-A of Fig. 1 to cuing open View；Fig. 3 is the structure diagram for the control device that an embodiment of the present invention provides；Please refer to Fig. 1-Fig. 3.The present embodiment mentions For a kind of welding face guard, including mask body 100, the two sides of mask body 100 are equipped with for the head with operating personnel Fixed fixing piece 110；Mask body 100 is additionally provided with observation window 120 and control device 130, and observation window 120 includes framework 121 The outside of transparent glasses lens 122 is set in the intracorporal transparent glasses lens 122 of frame and filter glass 123, filter glass 123 with being arranged, One end of filter glass 123 and framework 120 is articulated and connected by shaft；Control device 130 includes photosensitive sensor 131, processing Device 132, power supply device 133 and transmission device 134, photosensitive sensor 131 are arranged on the surface of mask body 100, power supply dress It sets 133 to be electrically connected with photosensitive sensor 131, processor 132 and transmission device 134, photosensitive sensor 131 and transmission device 134 With 132 communication connection of processor, the output connection rotating shaft of transmission device 134.

Specifically, the welding face guard of the present embodiment can be used for the construction site of any arc welding, to protect work people Injury of the member from electric arc arc light.Non electrically conductive material any in the prior art can be selected in mask body 100 in the present embodiment It is made, is made for example, rigid plastics can be selected.The structure such as head hoop, fixing piece in the present embodiment can be selected in fixing piece 110 110 include two fixing belts, and two fixing belts are separately positioned in the left and right sides of mask body 100, the both ends of fixing belt It is fixedly connected with mask body 100, fixing belt and mask body 100 surround a wearing space jointly, which is used for It is connect with human ear.It can make staff that need not hold protective face mask by fixing piece 110, and then facilitate the weldering of staff Connect operation.

Observation window 120 includes the framework 121 being vertically arranged in mask body 100, the section of framework 121 in the present embodiment It can be in the shape of any suitable, for example, can be round, triangle or rectangle etc..It is seen in an optional embodiment The framework 121 for examining window 120 includes four side walls being vertically arranged in mask body 100, orthogonal between adjacent side wall, The rectangular in cross-section of framework 121.Transparent glasses lens 122 and filter glass 123,122 He of transparent glasses lens are additionally provided in the framework 121 Filter glass 123 is arranged at the one end of framework 121 far from mask body 100.Wherein, transparent glasses lens 122 are fixed at frame In body 121, the card slot for fixing transparent glasses lens 122 can be set in framework 121, transparent glasses lens 122 may be mounted at the card In slot；One end of filter glass 123 connects one end of framework 121 by articulated mounting, and rotates around the hinged end, filter glass 123 rotation can cover transparent glasses lens 122.For example, filter glass 123 can pass through the upper end of shaft and framework 121 Side wall is connected, and filter glass 123 can be rotated around vertical direction.

The present embodiment further includes the control device 130 for controlling the rotation of filter glass 123, and control device 130 includes light Dependent sensor 131, processor 132, power supply device 133 and transmission device 134, wherein photosensitive sensor 131 is arranged in mask sheet On the surface of body 100, remaining part be can be set in the inside of mask body 100.Power supply device 133 and photosensitive sensor 131, Processor 132 and transmission device 134 are electrically connected, to provide energy for above-mentioned component；Photosensitive sensor 131 and transmission device 134 With 132 communication connection of processor, the output connection rotating shaft of transmission device 134.The transmission device 134 of the present embodiment can select With the form of any suitable in the prior art, for example, transmission device 134 can be micromotor.

When in use, when having detected arc light, photosensitive sensor 131 sends the first induction to processor 132 for this implementation Signal, processor 132 controls transmission device 134 and rotates forward at this time, so that filter glass 123 covered transparent glasses lens 122, it is real Now to the protection of operating personnel；After weld job is completed, arc light disappears, photosensitive sensor 131 sends second to processor 132 Inductive signal, processor 132 controls transmission device 134 and rotates backward at this time, so that filter glass 123 returns to initial position, just It carries out accordingly observing operation by transparent glasses lens 122 in staff.

Further, fan 124, fan 124 and power supply device 133 are additionally provided on the side wall of the framework 121 of the present embodiment Electrical connection.After staff wears, fan 124 can accelerate the air in mask to flow, and keep the cleaning of inner air.

Further, in this embodiment the edge of mask body 100 is equipped with elastic layer, it can by elastic layer and human contact To improve the comfort worn.The elastic layer is chosen as the structure of any suitable in the prior art such as spongy layer.

Further, in this embodiment power supply device 133 be battery or lithium ion battery.

Welding face guard provided in this embodiment, including mask body 100, the two sides of mask body 100, which are equipped with, to be used for The fixed fixing piece 110 with the head of operating personnel；Mask body 100 is additionally provided with observation window 120 and control device 130, observation Window 120 includes framework 121 and setting in the intracorporal transparent glasses lens 122 of frame and filter glass 123, and filter glass 123 is arranged saturating One end of the outside of bright mirror piece 122, filter glass 123 and framework 120 is articulated and connected by shaft；Control device 130 includes light Dependent sensor 131, processor 132, power supply device 133 and transmission device 134, photosensitive sensor 131 are arranged in mask body 100 Surface on, power supply device 133 is electrically connected with photosensitive sensor 131, processor 132 and transmission device 134, photosensitive sensor 131 and transmission device 134 with 132 communication connection of processor, the output connection rotating shaft of transmission device 134.The present embodiment is logical Arc light when 131 induction welding of photosensitive sensor is crossed, when having detected arc light, photosensitive sensor 131 is sent to processor 132 First inductive signal, processor 132 controls transmission device 134 and rotates forward at this time, so that filter glass 123 covered transparent mirror Piece 122 realizes the protection to operating personnel；After weld job is completed, arc light disappears, photosensitive sensor 131 is to processor 132 The second inductive signal is sent, processor 132 controls transmission device 134 and rotates backward at this time, so that filter glass 123 returns to initially Position carries out accordingly observing operation convenient for staff by transparent glasses lens 122.

Fig. 4 is the structure diagram for the welding face guard that another embodiment of the utility model provides；Referring to figure 4..Into one Step, the lower part of mask body 100 is also connected with neck guard cover 140 in the present embodiment, and work can be effectively protected in neck guard cover 140 The infringement of welding slag, ensure that the personal safety of staff when the skin of neck of personnel is from welding.

Fig. 5 is the structure diagram for the welding face guard that the utility model another embodiment provides；Referring to figure 5..Into one Step ground, the present embodiment are additionally provided with respiratory siphon 150, and one end of respiratory siphon 150 connects mask body 100, and the other end passes through neck guard cover It is connected after 140 with caisson, can store fresh air or oxygen in caisson, in this way in the weld job of bad environments Scene, staff can be replenished in time ozone by respiratory siphon 150, and the breathing of effective protection staff is strong Health.

Fig. 6 is the structure diagram for the welding face guard that another embodiment of the utility model provides；Please refer to Fig. 6.Into one Step, filter 160 is additionally provided in the present embodiment between respiratory siphon 150 and mask body 100, is equipped with strainer in filter 160, The structure of any suitable in the prior art can be selected in strainer, such as can select non-woven fabrics, and non-woven fabrics can prevent welding from generating Pernicious gas damage staff respiratory system.

When in use, when having detected arc light, photosensitive sensor 131 is to place for welding face guard provided in this embodiment It manages device 132 and sends the first inductive signal, processor 132 controls transmission device 134 and rotates forward at this time, so that filter glass 123 Transparent glasses lens 122 were covered, realize the protection to operating personnel；After weld job is completed, arc light disappears, photosensitive sensor 131 send the second inductive signal to processor 132, and processor 132 controls transmission device 134 and rotates backward at this time, so that filtering Eyeglass 123 returns to initial position, carries out accordingly observing operation by transparent glasses lens 122 convenient for staff.In addition, the present embodiment The infringement of welding slag when also protecting the skin of neck of staff from welding by the way that neck guard cover 140 is arranged；Pass through setting and gas storage The respiratory system for the pernicious gas damage staff that the connected respiratory siphon 150 of device and filter 160 prevent welding from generating, and When for staff supplement ozone, protect the respiratory health of staff.

Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new The range of each embodiment technical solution of type.

Claims

1. a kind of welding face guard, which is characterized in that including mask body, the two sides of the mask body be equipped with for work The fixed fixing piece in the head of industry personnel；The mask body is additionally provided with observation window and control device, and the observation window includes frame In the intracorporal transparent glasses lens of the frame and filter glass, the outer of the transparent glasses lens is arranged in the filter glass for body and setting One end of side, the filter glass and the framework is articulated and connected by shaft；The control device includes photosensitive sensor, place Reason device, power supply device and transmission device, the photosensitive sensor are arranged on the surface of the mask body, the power supply device Be electrically connected with the photosensitive sensor, processor and transmission device, the photosensitive sensor and transmission device with the processing The output end of device communication connection, the transmission device connects the shaft；

The framework of the observation window includes four side walls being vertically arranged in the mask body, between the adjacent side wall Orthogonal, the transparent glasses lens and filter glass are arranged at the one end of the framework far from the mask body；

Fan is additionally provided on the side wall of the framework, the fan is electrically connected with the power supply device；

The edge of the mask body is equipped with elastic layer；

The lower part of the mask body is also connected with neck guard cover；

Be additionally provided with respiratory siphon, one end of the respiratory siphon connects the mask body, the other end pass through after the neck guard cover with storage Device of air is connected；

It is additionally provided with filter between the respiratory siphon and the mask body, is equipped with strainer in the filter.

2. welding face guard according to claim 1, which is characterized in that the fixing piece include two fixing belts, two A fixing belt is separately positioned in the left and right sides of the mask body, the both ends of the fixing belt and the mask sheet Body is fixedly connected, and the fixing belt and the mask body surround a wearing space jointly.

3. welding face guard according to claim 1, which is characterized in that the power supply device is battery.

4. welding face guard according to claim 1, which is characterized in that the strainer is non-woven fabrics.