CN208193410U - Smog chemical experiment breathing mask - Google Patents

Abstract

The utility model discloses a comprehensive gas mask for chemical experiments. The mask body is provided with an eye protection part, a poison filtering part and a breathing part, and a ventilation mechanism is arranged inside the poison filtering channel of the poison filtering part, and the poison filtering channel is located outside the mask body. One end is provided with a connection mechanism, and the canister is detachably fixed on the connection mechanism. The ventilation mechanism includes a seal and a breather. The movable part of the seal moves radially along the filter channel to open the first position and the filter channel. Close the second position of the drug filtering channel, the connecting mechanism is provided with a control part, the control part can control the axial movement of the ventilator along the drug filtering channel to drive the movable part to move from the second position to the first position; the feeding mechanism includes a miniature oxygen tank , an oxygen channel, a feeding port and an airflow regulator, and the oxygen channel on the mask body is connected to the miniature oxygen tank and the feeding port. With the gas mask provided by the utility model, the wearer can safely replace the gas canister in the working environment.

Description

Comprehensive chemical experiment gas mask

technical field

The utility model relates to a gas mask, in particular to a comprehensive chemical experiment gas mask.

Background technique

A gas mask is a personal special labor protection product, and it is also an individual protective product. It is worn on the head to protect people's respiratory organs, eyes and face, and is a personal protective equipment to prevent poisonous gases, dust, bacteria, toxic and harmful gases or steam and other toxic substances. . Gas masks are widely used in petroleum, chemical industry, mining, metallurgy, military, fire protection, emergency rescue, health and epidemic prevention, technology and environmental protection, machinery manufacturing and other fields, and can also play an important role in cities with severe smog and photochemical smog. Respiratory protection.

The gas mask is equipped with a canister and a breathing part. The polluted air is filtered through the canister and then sent to the inside of the mask body for the wearer to breathe. The exhaust gas discharged by the user is discharged to the outside of the mask body through the breathing part. , the poison filtering effect of the canister is time-sensitive. As the use time increases, the filtering effect gradually weakens, and the canister needs to be replaced frequently. In actual use, when the wearer finds the canister in the polluted air environment When it needs to be replaced, if the canister is replaced in a polluted air environment, polluted air and toxic gas will enter the inside of the mask body. If it is replaced in a suitable environment, it will cause inconvenience to the wearer.

Utility model content

The purpose of the utility model is to provide a comprehensive chemical experiment gas mask to solve the deficiencies in the prior art.

In order to achieve the above object, the utility model provides the following technical solutions:

A full-scale chemical experiment gas mask, including a mask body, the mask body is provided with an eye protection part, a poison filtering part and a breathing part, the poison filtering part includes a poison filtering channel, and a ventilation channel is arranged inside the poison filtering channel Mechanism, the drug filter channel is located at the outer end of the mask body with a connection mechanism, the canister is detachably fixed on the connection mechanism, the ventilation mechanism includes a seal and a breather, the seal It includes a movable part, and the radial movement of the movable part along the poison filtering channel has a first position for opening the poison filtering channel and a second position for closing the poison filtering channel, and the connecting mechanism is provided with a control part , the control part can control the axial movement of the breather along the poison filter channel to drive the movable member to move from the second position to the first position; it also includes a feeding mechanism, the feeding mechanism includes a micro-oxygen Tank, oxygen delivery channel, feeding port and airflow regulator, the oxygen delivery channel is arranged on the mask body, the oxygen delivery channel connects the miniature oxygen tank and the feeding port, and the airflow regulator is arranged on the miniature mask body. on the oxygen tank.

The material of the mask body is plastic, metal or rubber.

In the above-mentioned comprehensive chemical experiment gas mask, the sealing member includes an annular fixing plate, the edge of the annular fixing plate is fixed on the side wall of the poison filtering channel, and the annular fixing plate is provided with an accommodating cavity, so There are multiple accommodating cavities, and the multiple accommodating cavities are arranged along the circumferential direction of the annular fixing plate.

In the above-mentioned full-scale chemical experiment gas mask, the movable part is a fan-shaped plate, and an elastic member is arranged in the accommodating chamber, and one end of the elastic member is fixed on the bottom wall of the accommodating chamber, and the fan-shaped plate is fixed on the The other end of the elastic member, the side of the fan-shaped plate away from the accommodating cavity encloses a circular ventilation groove.

In the above-mentioned full-scale chemical experiment gas mask, the ventilation part includes a conical body, and one end of the conical body close to the movable part is provided with a restricting part, and the restricting part always passes through the circular ventilation groove, and the restricting part A ventilation hole is provided on the side wall between the part and the other end of the cone.

In the above-mentioned comprehensive chemical experiment gas mask, there are at least two chutes arranged on the inner wall of the drug filtering channel, the chute is arranged along the length direction of the drug filtering channel, and the cone The side wall of the body is provided with a slider, the slider is limited in the chute, and can move along the chute to drive the axial movement of the cone along the drug filtering channel; the chute A compression spring is arranged inside, one end of the compression spring is fixed on the side wall of the chute, and the slider is connected with the other end of the compression spring.

In the above-mentioned comprehensive chemical experiment gas mask, the connecting mechanism includes a connecting cylinder arranged at the end of the poison filtering channel, and an annular groove is arranged on the connecting cylinder, and the inner part of the annular groove is arranged to fix the The fixed part of the canister.

In the above-mentioned comprehensive chemical experiment gas mask, the bottom of the annular groove is provided with an active channel connected with the poison filtering channel, the control part is arranged in the active channel, and one end of the control part is located in the annular Inside the groove, the other end of the control part presses against the end of the cone, and the control part can move along the active channel to drive the cone to move from the second position to the first position.

In the above-mentioned comprehensive chemical experiment gas mask, the oxygen delivery channel is arranged inside the mask body, an arc-shaped air outlet plate is arranged below the gas outlet end of the poison filtering channel, and the oxygen delivery port is arranged on the arc-shaped air outlet plate There are a plurality of air outlets on the air outlet, and the air outlets are all in communication with the oxygen delivery channel.

In the above technical solution, the utility model provides a comprehensive chemical experiment gas mask, the mask body is provided with an eye protection part, a poison filtering part, a breathing part and a support mechanism, the poison filtering part includes a poison filtering channel, a poison filtering channel A seal and a breather are arranged inside, and a connection mechanism is arranged at the end of the poison filtering channel, and the canister is detachably fixed on the connection mechanism. When the canister is fixed on the connection mechanism, the connection mechanism controls the breather The air filter and the seal open the filter channel, and the air is filtered and processed by the canister and then sent to the mask body. When the canister is disassembled from the connecting mechanism, the breather and the seal close the filter channel to prevent polluted air and Toxic gas enters the inside of the mask body, and oxygen can be supplied to the inside of the mask body through the feeding mechanism at this time, so that the wearer can safely replace the canister in the working environment, and the polluted air and toxic gas will not affect the mask body. The wearer deals damage.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. For some embodiments described, those skilled in the art can also obtain other drawings according to these drawings.

Fig. 1 is the structural representation of the full-scale chemical experiment gas mask that the utility model embodiment provides;

Fig. 2 is a schematic structural view of the poison filtering channel provided by the embodiment of the present invention;

Fig. 3 is a schematic structural diagram of the seal provided by the embodiment of the present invention.

Explanation of reference signs:

1. Mask body; 1.1. Eye protection part; 1.2. Breathing part; 1.3. Miniature oxygen tank; 1.4. Oxygen delivery channel; 1.5. Airflow regulator; 2.3. Compression spring; 3. Seal; 3.1. Annular fixed plate; 3.2. Accommodating cavity; 3.3. Sector plate; 3.4. Elastic part; Restriction part; 4.3, ventilation hole; 4.4, slider; 5, connecting mechanism; 5.1, connecting cylinder; 5.2, annular groove; 5.3, movable channel;

Detailed ways

In order to make those skilled in the art better understand the technical solution of the utility model, the utility model will be further introduced in detail below in conjunction with the accompanying drawings.

As shown in Figures 1-3, a comprehensive chemical experiment gas mask provided by the embodiment of the present invention includes a mask body 1, which is provided with an eye protection part 1.1, a poison filtering part 2 and a breathing part 1.2, and a poison filtering part 1.2. Part 2 includes a drug filtering channel 2.1, which is provided with a ventilation mechanism inside. The drug filtering channel 2.1 is located outside the mask body 1 and is provided with a connecting mechanism 5. The drug canister is detachably fixed on the connecting mechanism 5. The ventilation mechanism includes The sealing part 3 and the ventilation part 4, the sealing part 3 includes a movable part, the radial movement of the movable part along the poison filtering channel 2.1 has a first position for opening the poison filtering channel 2.1 and a second position for closing the poison filtering channel 2.1, the connecting mechanism 5 A control part 5.4 is arranged on it, and the control part 5.4 can control the axial movement of the ventilator 4 along the poison filtering channel 2.1 to drive the movable part to move from the first position to the second position to the first position; it also includes a feeding mechanism, which includes a micro-oxygen Tank 1.3, oxygen channel 1.4, feeding port and airflow regulator 1.5, oxygen channel 1.4 is arranged on the mask body 1, oxygen channel 1.4 connects miniature oxygen tank 1.3 and feeding port, and airflow regulator 1.5 is arranged on the miniature oxygen tube.

Specifically, the mask body 1 is a full-face mask. The mask body 1 covers the user's face to protect the face from poisonous substances, while allowing air circulation and ensuring the user's field of vision. The mask body 1 is provided with eye protection Part 1.1, the eye protection part 1.1 is arranged on the upper part of the mask body 1 to ensure the user's field of vision. The mask body 1 is provided with a poison filtering part 2, which includes a poison filtering channel 2.1 and a connecting mechanism 5. The poison channel 2.1 runs through the mask body 1, the end of the poison filter channel 2.1 located outside the mask body 1 is the air intake end, the end of the poison filter channel 2.1 located inside the mask body 1 is the gas outlet end, and the connecting mechanism 5 is arranged at the inlet of the poison filter channel 2.1 At the gas end, the connection mechanism 5 can be a connection cylinder 5.1, a connection ring or other mechanisms. The canister can be fixed through the connection mechanism 5, and the canister can be replaced quickly. The lower part of the mask body 1 is also provided with a The breathing part 1.2, the breathing part 1.2 can be a breathing hole, a breathing channel or a breathing tube, the air exhaled by the wearer is discharged through the breathing part 1.2, a one-way exhalation valve is arranged at the inlet of the breathing part 1.2, and a one-way exhalation valve is arranged at the outlet of the breathing part 1.2 The end can also be provided with a dust cover; the poison filter channel 2.1 is provided with a ventilation mechanism, the ventilation mechanism includes a seal 3 and a vent 4, the seal 3 can be a sealing plate or a seal ring and other mechanisms, and the seal 3 is provided with a movable part, the movable part can move along the radial direction of the poison filtering channel 2.1, when the movable part moves to the first position, the movable part moves along the radial direction of the poison filtering channel 2.1 to the inside of the sealing member 3, so that the poison filtering channel 2.1 is opened, At this time, the air filtered by the filter canister can be delivered to the inside of the mask body 1 through the filter channel 2.1 for the wearer to use. When the movable part moves to the second position, the movable part traverses the inside of the filter channel 2.1, so that the filter The poison channel 2.1 is closed to separate the inside of the mask body 1 from the outside. At this time, the canister can be replaced. In order to realize that when the canister is removed, the movable part automatically moves from the first position to the second position. After the canister is installed, the movable part also moves from the second position to the first position, and the inside of the canister 2.1 is also provided with a breather 4 and a control part 5.4, and the breather 4 can be a conical ventilation gas, a ventilator or For other mechanisms, the control part 5.4 is located on the connection mechanism 5, and the control part 5.4 can control the movement of the breather 4 along the axis of the drug filter channel 2.1 along the interior of the drug filter channel 2.1. When the canister is installed, the pressure of the canister is located at The control part 5.4 on the connection mechanism 5 makes the control part 5.4 drive the breather 4 to move axially inward along the poison filter channel 2.1, so that the movable part moves from the second position to the first position, and opens the poison filter channel 2.1. When the poison canister is removed, the breather 4 moves outward axially along the poison filter passage 2.1 under the action of the control member, so that the movable part returns from the first position to the second position. At this time, the poison filter passage 2.1 is closed, which can The poison canister is replaced, so that the poison filter channel 2.1 is automatically closed after the canister is removed, preventing toxic gas from entering the inside of the mask body 1, and the poison filter tube is installed Finally, the poison filter channel 2.1 is opened, so that the wearer can replace the poison canister in a complicated environment.

In this embodiment, in order to facilitate the replacement of the canister by the wearer in a complex environment, a support mechanism is also provided on the mask body 1, and the support mechanism includes a miniature oxygen tank 1.3, an oxygen delivery channel 1.4, a support port and an airflow regulator 1.5 , the miniature oxygen tank 1.3 is arranged on the side of the mask body 1, the airflow regulator 1.5 is arranged on the miniature oxygen tank 1.3, the flow rate of the oxygen output by the miniature oxygen tank 1.3 can be controlled by the airflow regulator 1.5, and the oxygen delivery channel 1.4 is arranged on On the mask body 1, the miniature oxygen tank 1.3 is connected to the oxygen delivery channel 1.4 through the oxygen delivery tube, and the feeding port is set inside the mask body 1 and communicated with the oxygen delivery channel 1.4. When the canister is replaced, the movable part closes the filter channel 2.1, now open the miniature oxygen tank 1.3, the miniature oxygen tank 1.3 delivers oxygen to the inside of the mask body 1 through the oxygen delivery channel 1.4, for the wearer to use. The air is filtered and delivered to the inside of the mask body 1.

In the comprehensive chemical experiment gas mask provided by the embodiment of the utility model, the mask body 1 is provided with an eye protection part 1.1, a poison filtering part 2, a breathing part 1.2 and a support mechanism, and the poison filtering part 2 includes a poison filtering channel 2.1, a poison filtering channel 2.1 is provided with a sealing member 3 and a breather 4, and a connection mechanism 5 is provided at the end of the drug filtering channel 2.1, and the connection mechanism 5 is detachably fixed with a canister. When the canister is fixed on the connection mechanism 5 When the connection mechanism 5 controls the ventilation part 4 and the sealing part 3 to open the poison passage 2.1, the air is filtered and processed by the canister and then transported to the mask body 1. When the canister is disassembled from the connection mechanism 5, the ventilation part 4 and the sealing member 3 close the poison filter channel 2.1 to prevent polluted air and poisonous gas from entering the inside of the mask body 1, and at this time, oxygen can be provided to the inside of the mask body 1 through the support mechanism, so that the wearer can use it in the working environment It is safe to replace the canister, and the polluted air and toxic gas will not cause harm to the wearer.

In this embodiment, preferably, the sealing member 3 includes an annular fixing plate 3.1, the edge of the annular fixing plate 3.1 is fixed on the side wall of the drug filtering channel 2.1, and the annular fixing plate 3.1 is provided with a housing chamber 3.2, and the housing chamber 3.2 has A plurality of accommodating cavities 3.2 are arranged along the circumferential direction of the annular fixed plate 3.1; the movable part is a fan-shaped plate 3.3, and an elastic member 3.4 is arranged in the accommodating cavity 3.2, and one end of the elastic member 3.4 is fixed on the bottom wall of the accommodating cavity 3.2, and the fan-shaped plate 3.3 is fixed on the other end of the elastic member 3.4, and the side of the fan-shaped plate 3.3 away from the accommodation chamber 3.2 forms a circular ventilation groove 3.5; the accommodation chamber 3.2 is arranged along the radial direction of the poison filtering channel 2.1, and the fan-shaped plate 3.3 and the accommodation chamber 3.2 are aligned One corresponding setting, when the ventilator 4 drives the fan-shaped plate 3.3 to move from the second position to the first position, the fan-shaped plate 3.3 moves along the radial direction of the poison filtering channel 2.1 to the interior of the accommodation chamber 3.2, and when the fan-shaped plate 3.3 moves to the interior of the accommodation chamber 3.2 At this time, a ventilation gap is formed between each fan-shaped plate 3.3, and at this time, the fan-shaped plate 3.3 presses against the elastic member 3.4 so that the elastic member 3.4 has pressure. Return from the first position to the second position under the action of the fan, at this time, the fan-shaped plate 3.3 and the breather 4 jointly seal the poison filtering channel 2.1.

In this embodiment, preferably, the breather 4 includes a conical body 4.1, and one end of the conical body 4.1 close to the movable part is provided with a restricting part 4.2, and the restricting part 4.2 always passes through the circular ventilation groove 3.5, and the restricting part 4.2 and the conical body 4.1 Ventilation holes 4.3 are provided on the side wall between the other ends; chute 2.2 is provided on the inner wall of the drug filtering channel 2.1, there are at least two chute 2.2, and the chute 2.2 is arranged along the length direction of the drug filtering channel 2.1, and the cone The side wall of the body 4.1 is provided with a slider 4.4, the slider 4.4 is limited in the chute 2.2, and can move along the chute 2.2 to drive the cone 4.1 to move axially along the poison filtering channel 2.1; the chute 2.2 is provided with a compression spring 2.3, one end of the compression spring 2.3 is fixed on the side wall of the chute 2.2, and the slider 4.4 is connected with the other end of the compression spring. From the air inlet end of the poison filtering channel 2.1 to the air outlet end, the radial dimension of the cone 4.1 gradually decreases, the restricting part 4.2 is located on the side of the cone 4.1 close to the gas outlet end of the poison filtering channel 2.1, and the restricting part 4.2 is always located in the circle In the ventilating groove 3.5, when the conical body 4.1 moves inwardly along the poison filter channel 2.1 under the drive of the control part 5.4, the conical body 4.1 presses each fan-shaped plate 3.3, so that each fan-shaped plate 3.3 shrinks to the inside of the accommodation chamber 3.2, and opens Toxic filtering channel 2.1, at this time, the slider 4.4 on the cone 4.1 presses against the compression spring 2.3, and when the pressure of the control part 5.4 on the cone 4.1 disappears, the cone 4.1 moves outwards and returns to the initial position under the effect of compression paralysis At this time, each fan-shaped plate 3.3 and the restricting part 4.2 on the cone-shaped body 4.1 jointly close the poison filtering channel 2.1, which can prevent poisonous gas from entering the inside of the mask body 1.

In this embodiment, preferably, the connecting mechanism 5 includes a connecting cylinder 5.1 arranged at the end of the drug filtering channel 2.1, an annular groove 5.2 is arranged on the connecting cylinder 5.1, and a fixing device for fixing the canister is arranged inside the annular groove 5.2. part; the bottom of the annular groove 5.2 is provided with an active channel 5.3 connected with the poison filtering channel 2.1, the control part 5.4 is arranged in the active channel 5.3, one end of the control part 5.4 is located inside the annular groove 5.2, and the other end of the control part 5.4 is pressed At the end of the cone 4.1, the control part 5.4 is movable along the movable channel 5.3 to drive the cone 4.1 to move from the second position to the first position. The outer side wall of the connecting cylinder 5.1 is closely connected with the side wall of the poison filtering channel 2.1, the annular groove 5.2 extends along the axis of the connecting cylinder 5.1 to a certain length, and the inner part of the annular groove 5.2 is provided with a fixed part, which can be an inner The screw or the card slot fixes the canister through the fixing part. One end of the control part 5.4 is located inside the annular groove 5.2 and blocks the stroke of the connection between the canister and the fixing part. When the internal movement of the groove 5.2 is connected with the fixed part, the end of the canister presses against the control part 5.4, so that the control part 5.4 moves along the movable channel 5.3, so that the control part 5.4 drives the movement of the cone 4.1 to open the filter channel 2.1, when the canister is removed from the inside of the annular groove 5.2, the control part returns to the initial position under the action of the cone 4.1, so that the canister 2.1 is automatically closed after the canister is removed to avoid the entry of toxic gases After reaching the inside of the mask body 1 and installing the drug filter tube, the drug filter channel 2.1 is opened, so that the wearer can replace the drug filter tank in a complicated environment.

In this embodiment, preferably, the oxygen delivery channel 1.4 is arranged inside the mask body 1, and an arc-shaped air outlet plate is arranged below the air outlet of the poison filtering channel 2.1, and the oxygen delivery port is a plurality of air outlet holes arranged on the arc-shaped air outlet plate, and the outlet The air holes are all connected to the oxygen delivery channel 1.4; a plurality of air outlet holes are arranged at intervals along the arc-shaped air outlet plate, and the air outlet direction of the air outlet holes faces the breathing position of the wearer's nose.

Some exemplary embodiments of the present utility model have been described above only by way of illustration. Undoubtedly, for those skilled in the art, without departing from the spirit and scope of the present utility model, various Modifications are made to the described embodiments. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present utility model.

Claims (7)

1. A comprehensive chemical experiment gas mask, comprising a mask body, the mask body is provided with an eye protection portion, a poison filter portion and a breathing portion, it is characterized in that the poison filter portion includes a poison filter channel, and the filter filter A ventilation mechanism is provided inside the poison channel, and a connection mechanism is provided at one end of the filter channel located outside the mask body, and the drug canister is detachably fixed on the connection mechanism, and the ventilation mechanism includes a seal and a breather, The sealing member includes a movable part, and the movable part has a first position for opening the poison filtering channel and a second position for closing the poison filtering channel along the radial movement of the poison filtering channel. A control part is provided, and the control part can control the axial movement of the ventilation part along the poison filtering channel to drive the movable part to move from the second position to the first position; Also includes a support mechanism, the support mechanism includes a miniature oxygen tank, an oxygen supply channel, a supply port and an airflow regulator, the oxygen delivery channel is arranged on the mask body, and the oxygen delivery channel connects the miniature oxygen tank and the support mouth, and the airflow regulator is arranged on the miniature oxygen tank. 2. The full-scale chemical experiment gas mask according to claim 1, wherein the sealing member comprises an annular fixing plate, and the edge of the annular fixing plate is fixed on the side wall of the poison filtering channel, so that The annular fixing plate is provided with accommodating cavities, and there are multiple accommodating cavities, and the plurality of accommodating cavities are arranged along the circumferential direction of the annular fixing plate. 3. The full-scale chemical experiment gas mask according to claim 2, wherein the movable part is a fan-shaped plate, an elastic member is arranged in the accommodation chamber, and one end of the elastic member is fixed on the side of the accommodation chamber. On the bottom wall, the fan-shaped plate is fixed to the other end of the elastic member, and the side of the fan-shaped plate away from the accommodating cavity encloses a circular ventilation slot. 4. The full-scale chemical experiment gas mask according to claim 3, wherein the breather comprises a conical body, and the end of the conical body near the movable part is provided with a restricting part, and the restricting part is always worn through A ventilation hole is provided on the side wall between the restricting part and the other end of the cone through the circular ventilation groove. 5. The full-scale chemical experiment gas mask according to claim 4, characterized in that, the inner side wall of the poison filtering channel is provided with chutes, and there are at least two chutes, and the chutes are arranged along the The length direction of the filtering channel is set, the side wall of the cone is provided with a slider, the slider is limited in the chute, and can move along the chute to drive the cone to move along the filter. Axial movement of poison channel; A compression spring is arranged in the chute, one end of the compression spring is fixed on the side wall of the chute, and the slider is connected with the other end of the compression spring. 6. The comprehensive chemical experiment gas mask according to claim 1, wherein the connecting mechanism comprises a connecting cylinder arranged at the end of the poison filtering channel, and an annular groove is arranged on the connecting cylinder, A fixing part for fixing the canister is arranged inside the annular groove. 7. The full-scale chemical experiment gas mask according to claim 6, characterized in that, the bottom of the annular groove is provided with an active channel communicating with the poison filtering channel, and the control part is arranged on the active channel Inside, one end of the control part is located inside the annular groove, the other end of the control part is pressed against the end of the cone, and the control part can move along the active channel to drive the cone from the The second position moves to the first position.