CN107875535B - Chemical experiment is filter equipment for gas mask convenient to change - Google Patents
Chemical experiment is filter equipment for gas mask convenient to change Download PDFInfo
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- CN107875535B CN107875535B CN201711186893.3A CN201711186893A CN107875535B CN 107875535 B CN107875535 B CN 107875535B CN 201711186893 A CN201711186893 A CN 201711186893A CN 107875535 B CN107875535 B CN 107875535B
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
- A62B23/02—Filters for breathing-protection purposes for respirators
- A62B23/025—Filters for breathing-protection purposes for respirators the filter having substantially the shape of a mask
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- General Health & Medical Sciences (AREA)
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Abstract
The invention discloses a conveniently-replaced filtering device for a chemical experiment gas mask, which comprises a barrel, wherein a filtering cavity is arranged in the barrel, the barrel comprises an insertion section and a filtering section which are connected, the radial size of the insertion section is smaller than that of the filtering section, and a sealing ring is arranged at the joint of the outer walls of the insertion section and the filtering section; the interior activity of filter segment has cup jointed and has born the carrier, bears the radial cross-section of carrier and be semicircle form, bears to be provided with two joint grooves along the axial at least on the carrier, and equal joint has a filtration piece in each draw-in groove, bears the one end setting that deviates from the insertion section on the carrier and supplies the concave part or the bellying of hand application of force loading and unloading. According to the filter device for the chemical experiment gas mask convenient to replace, which is provided by the invention, the cylinder body is detachably connected in the chemical experiment gas mask, and the corresponding filter piece can be replaced in a targeted manner aiming at toxic gas generated in different chemical experiments needing to be filtered, so that the filtration of almost all types of toxic gas is realized.
Description
Technical Field
The invention relates to a gas mask, in particular to a chemical experiment gas mask filter device convenient to replace.
Background
In a chemical laboratory, gases emitted during a part of experiments are toxic and harmful gases, and a part of highly toxic gases such as cyanide can cause great harm to human bodies in a trace amount, so that experiment personnel need to wear gas masks during the part of experiments. For example, the invention patent application with the application publication number of CN106581880A and the application publication date of 2017, 4 and 26 and the name of gas mask for chemical experiments provides the gas mask special for the chemical experiments, which comprises a detachable filter device, a fixed filter device and an air outlet pipe. It realizes the change of activated carbon layer and wet gauze through can dismantling filter equipment.
The prior art has the disadvantages that chemical experiments can generate extremely many types of toxic gases, and all the toxic conditions can not be dealt with by replacing an activated carbon layer and wet gauze, so that the situations that the gas mask in the prior art can deal with are limited.
Disclosure of Invention
The invention aims to provide a chemical experiment gas mask filter device convenient to replace, and the filter device is used for solving the defects in the technology.
In order to achieve the above purpose, the invention provides the following technical scheme:
a chemical experiment gas mask filter device convenient to replace comprises a cylinder body, wherein a filter cavity is arranged in the cylinder body, the cylinder body comprises an insertion section and a filter section which are connected, the radial size of the insertion section is smaller than that of the filter section, and a sealing ring is arranged at the joint of the outer walls of the insertion section and the filter section;
a bearing piece is movably sleeved in the filtering section, the radial section of the bearing piece is semicircular, at least two clamping grooves are axially arranged on the bearing piece, a filtering piece is clamped in each clamping groove, and a groove part or a protruding part for applying force to the hand to assemble and disassemble is arranged at one end of the bearing piece, which is far away from the inserting section;
the outer wall connecting part of the insertion section and the filtering section is in a step shape, and the inner walls of the insertion section and the filtering section are connected through a truncated cone-shaped transition structure.
In the above-mentioned filtering apparatus, the length of the bearing member is greater than the length of the filtering section, and the end portion of the bearing member extending outward from the filtering section is provided with the groove portion or the protrusion portion.
In the filtering device, a section of the filtering cavity, which is located in the filtering section and adjacent to the inserting section, is a reduced section, and the reduced section is in interference fit with the bearing piece.
In the filter device, the end part of the bearing part extending out of the filter section is provided with the plurality of the convex parts in parallel, and one of the convex parts is attached to the end part of the filter section.
In the filtering device, a plurality of groups of clamping pieces are arranged on the bearing piece, each group of clamping pieces comprises two arc-shaped rods which are oppositely arranged, each clamping piece and each clamping groove are arranged in a one-to-one correspondence manner, the two arc-shaped rods are respectively in one-to-one correspondence with the two side walls of the clamping grooves, and the arc-shaped rods are in butt joint with the side walls of the clamping grooves to form a circular ring structure.
Foretell filter equipment, be provided with the arc bead on the inner wall that holds carrier, form between two arc beads the joint groove, the arc bead with the butt joint of arc pole forms the ring structure.
Foretell filter equipment, the one end that holds carrier is the bellmouth column structure that radial dimension reduces in proper order, the bellmouth column structure laminate in round platform form transition structure is last.
In the technical scheme, the conveniently-replaced filtering device for the chemical experiment gas mask provided by the invention has the advantages that the cylinder body is detachably connected in the chemical experiment gas mask, the cylinder body is detachably connected with at least two filtering pieces of different types through the bearing piece, so that the corresponding filtering pieces can be replaced pertinently aiming at toxic gas generated in different chemical experiments needing filtering, and the filtering of almost all types of toxic gas is realized.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a front view of a replaceable filter assembly for a chemical laboratory respirator according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a filter assembly for a chemical laboratory respirator that is easily replaceable according to one embodiment of the present invention;
FIG. 3 is a cross-sectional view of a filter assembly for a chemical laboratory respirator that facilitates replacement according to another embodiment of the present invention;
FIG. 4 is a side view of a filter assembly for a chemical laboratory respirator that facilitates replacement according to an embodiment of the present invention.
Description of reference numerals:
1. a barrel; 1.1, an insertion section; 1.2, a filtering section; 2. a filter chamber; 2.1, a reduction section; 3. a seal ring; 4. a carrier; 6. a filter member; 7. a groove part; 8. a boss portion; 9. a clamping piece; 10. an arc-shaped convex rib.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 4, the easy-to-replace filter device for a chemical experiment respirator provided by the embodiment of the present invention includes a cylinder 1, a filter chamber 2 is disposed in the cylinder 1, the cylinder 1 includes an insertion section 1.1 and a filter section 1.2 which are connected, a radial dimension of the insertion section 1.1 is smaller than a radial dimension of the filter section 1.2, and a seal ring 3 is disposed at a connection position of outer walls of the insertion section 1.1 and the filter section 1.2; a bearing piece 4 is movably sleeved in the filtering section 1.2, the radial section of the bearing piece 4 is semicircular, at least two clamping grooves are axially arranged on the bearing piece 4, a filtering piece 6 is clamped in each clamping groove, and a groove part 7 or a protruding part 8 for loading and unloading force of a hand is arranged at one end of the bearing piece 4, which is far away from the inserting section 1.1; the outer wall junction of the insertion section 1.1 and the filtering section 1.2 is in a step shape, and the inner walls of the insertion section 1.1 and the filtering section 1.2 are connected through a truncated cone-shaped transition structure.
Specifically, the filter equipment that this embodiment provided is used for detachable to install on corresponding chemical experiment gas mask, is provided with one on the inlet channel on this mask and holds the chamber, and barrel 1 is arranged in placing into this and holds the chamber for the gas that gets into in the mask by inlet channel all filters via filter chamber 2 in barrel 1 under the wearing state. Barrel 1 is less than including inserting section 1.1 and fillter 1.2, and the radial dimension of inserting section 1.1 is less than fillter 1.2's radial dimension, the outer wall junction of inserting section 1.1 and fillter 1.2 is provided with sealing washer 3, and inserting section 1.1 is arranged in inserting a predetermined jack on the mask to realize the sealing connection between 1 outer wall of barrel and mask through sealing washer 3, prevent that toxic gas from getting into inside the mask by the outside of barrel 1. The inside of filter segment 1.2 sets up and filters piece 6, and it is used for filtering toxic gas, and the inside activity of filter segment 1.2 has cup jointed and has born piece 4, bears piece 4 promptly and can follow in filter segment 1.2 pull out or fill in filter segment 1.2 in, bears the detachable and installs a plurality of filter pieces 6 that are used for filtering each toxic gas on piece 4. Bear the appearance of piece 4 and agree with mutually with the appearance of the inner wall of filter segment 1.2 in the axial, nevertheless radially, for being convenient for filter 6 installation, it only is half circular, is provided with a plurality of joint grooves on it, so when installation was filtered piece 6, holds and bears and hold piece 4, will filter piece 6 and insert each joint groove one by one according to the order can.
In this embodiment, the specific type of each filter element 6 is selected according to actual needs, and details of this embodiment are omitted. The filter equipment that this embodiment provided takes out barrel 1 from the filter equipment who corresponds earlier when using, takes out through concave part 7 or bellying 8 and holds carrier 4 in barrel 1, and a plurality of filtration pieces 6 that will prepare in advance are inserted one by one according to the order and are held the joint groove that corresponds on carrier 4, and the carrier 4 will be held again and is packed into in the fillter section 1.2, and the corresponding chamber that holds on inserting respirator is inserted barrel 1 through inserting section 1.1 at last, accomplishes the installation.
According to the filter device for the chemical experiment gas mask convenient to replace, which is provided by the embodiment of the invention, the cylinder body 1 is detachably connected in the chemical experiment gas mask, the cylinder body 1 is detachably connected with at least two filter pieces 6 of different types through the bearing piece 4, so that the corresponding filter pieces 6 can be replaced pertinently aiming at toxic gas generated in different chemical experiments needing filtering, and thus, almost all types of toxic gas are filtered.
In this embodiment, further, the length of the bearing member 4 is greater than the length of the filter segment 1.2, that is, one end of the bearing member 4 is located outside the filter segment 1.2, and the end portion of the bearing member 4 extending out of the filter segment 1.2 is provided with the groove portion 7 or the protrusion portion 8, so that the bearing member 4 can be conveniently pulled out of the filter segment 1.2 and pushed into the filter segment 1.2.
In this embodiment, a section of the filter cavity 2 located inside the filter section 1.2 and adjacent to the insertion section 1.1 is a reduced section 2.1 (due to small size change, it is difficult to see difference on the figure), the reduced section 2.1 is in interference fit with the bearing member 4, the interference fit of the end portions enables the bearing member 4 to be stably connected in the filter section 1.2 without shaking on one hand, and on the other hand, the connection of the end portions does not cause excessive resistance to the installation and the removal of the bearing member 4.
In this embodiment, furthermore, it is provided with a plurality of bellying 8 to stretch out on the portion of holding piece 4 that stretches out on the tip of fillter section 1.2 side by side, and one of them bellying 8 laminating in on the tip of fillter section 1.2, on the one hand, bellying 8 is used for increasing the resistance for it is more convenient to hold pulling out and stuffing of piece 4, and on the other hand, bellying 8 laminating in the tip of fillter section 1.2 is used for the location, and it puts in place to explain when this bellying 8 laminates that hold piece 4 is installed, need not to continue the application of force extrusion and is stuffed.
In this embodiment, it is further, it is provided with multiunit joint spare 9 on the carrier 4 to hold, and every group joint spare 9 is including two arc poles of relative setting, each joint spare 9 and each the joint groove one-to-one is arranged, two the arc pole respectively with two lateral walls one-to-ones of joint groove, the arc pole with the lateral wall butt joint in joint groove forms a ring structure, holds carrier 4 and only be semicircle form, is difficult to realize effectual fixed to the radial filtration piece 6 that fills up filter segment 1.2, realizes fixing the firm of filtration piece 6 through the ring structure.
In this embodiment, it is further, be provided with arc bead 10 on the inner wall that holds carrier 4, form between two arc beads 10 the joint groove, arc bead 10 with the arc pole meets mutually and forms the ring structure forms the joint groove through arc bead 10, so make ring structure protrusion in hold the inner wall that holds carrier 4, spacing fixed effect is better.
In this embodiment, furthermore, one end of the bearing part 4 is a bell mouth-shaped structure, i.e. a circular truncated cone shape, of which the radial size is reduced in sequence, and the bell mouth-shaped structure is attached to the circular truncated cone-shaped transition structure, so that the attachment of the bearing part 4 and the filter segment 1.2 is tighter.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (7)
1. A chemical experiment breathing mask filter device convenient to replace comprises a cylinder body, wherein a filter cavity is arranged in the cylinder body, and the chemical experiment breathing mask filter device is characterized in that the cylinder body comprises an insertion section and a filter section which are connected, the radial size of the insertion section is smaller than that of the filter section, and a sealing ring is arranged at the joint of the outer walls of the insertion section and the filter section;
a bearing piece is movably sleeved in the filtering section, the radial section of the bearing piece is semicircular, at least two clamping grooves are axially arranged on the bearing piece, a filtering piece is clamped in each clamping groove, and a groove part or a protruding part for applying force to the hand to assemble and disassemble is arranged at one end of the bearing piece, which is far away from the inserting section;
the outer wall connecting part of the insertion section and the filtering section is in a step shape, and the inner walls of the insertion section and the filtering section are connected through a truncated cone-shaped transition structure.
2. The filter device according to claim 1, wherein the length of the carrier is greater than the length of the filter segment, and the end of the carrier projecting beyond the filter segment is provided with the recessed portion or the protruding portion.
3. The filtration device of claim 2, wherein a section of the filter cavity within the filter section adjacent to the insert section is a reduced section that is an interference fit with the carrier.
4. The filter device according to claim 2, wherein a plurality of said protrusions are juxtaposed on the end of said carrier extending beyond said filter segment, one of said protrusions abutting on the end of said filter segment.
5. The filtering device according to claim 1, wherein a plurality of sets of engaging members are disposed on the supporting member, each set of engaging members includes two arc-shaped rods disposed oppositely, each engaging member and each engaging groove are disposed in a one-to-one correspondence, the two arc-shaped rods respectively correspond to two side walls of the engaging groove, and the arc-shaped rods and the side walls of the engaging grooves are butted to form a circular ring structure.
6. The filtering device as claimed in claim 5, wherein the inner wall of the supporting member is provided with an arc-shaped rib, the clamping groove is formed between two arc-shaped ribs, and the arc-shaped rib is butted with the arc-shaped rod to form the circular ring structure.
7. The filter apparatus of claim 1, wherein one end of the carrier is a flared structure having successively decreasing radial dimensions, the flared structure being attached to the frustoconical transition structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711186893.3A CN107875535B (en) | 2017-11-24 | 2017-11-24 | Chemical experiment is filter equipment for gas mask convenient to change |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711186893.3A CN107875535B (en) | 2017-11-24 | 2017-11-24 | Chemical experiment is filter equipment for gas mask convenient to change |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107875535A CN107875535A (en) | 2018-04-06 |
| CN107875535B true CN107875535B (en) | 2020-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711186893.3A Active CN107875535B (en) | 2017-11-24 | 2017-11-24 | Chemical experiment is filter equipment for gas mask convenient to change |
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| CN (1) | CN107875535B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4964900A (en) * | 1989-01-25 | 1990-10-23 | Mine Safety Appliances Company | Respirator filter means for removal of tritiated water |
| KR20110004412A (en) * | 2008-04-04 | 2011-01-13 | 쓰리엠 이노베이티브 프로퍼티즈 컴파니 | Air filtration device |
| KR101294333B1 (en) * | 2013-01-31 | 2013-08-07 | 이정식 | Rescue breathing device |
| CN205598455U (en) * | 2016-04-20 | 2016-09-28 | 上海宝亚安全装备股份有限公司 | Respirator of positive pressure air respirator of jar is filtered in area |
| CN205598456U (en) * | 2016-04-21 | 2016-09-28 | 江山市科力消防设备有限公司 | Two membrane filtration formula mask shells |
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2017
- 2017-11-24 CN CN201711186893.3A patent/CN107875535B/en active Active
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| CN107875535A (en) | 2018-04-06 |
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Inventor after: Zhang Chengru Inventor after: Wang Qingzhou Inventor before: Zhang Chengru |
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