CN210834593U

CN210834593U - Filter performance detection clamp for mask

Info

Publication number: CN210834593U
Application number: CN201921382957.1U
Authority: CN
Inventors: 苏鹤群; 陆冰
Original assignee: Jiangsu Guojian Testing Technology Co ltd
Current assignee: Jiangsu Guojian Testing Technology Co ltd
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2020-06-23
Anticipated expiration: 2029-08-23

Abstract

The utility model discloses a filtering performance detection clamp of a mask, which comprises an upper clamp and a lower clamp, wherein the upper clamp comprises a hollow upper clamp shell and a hollow upper clamp inner cavity, and the lower clamp comprises a hollow lower clamp base and a hollow mask inspection platform; the mask to be detected is arranged on the mask to be detected table, the upper clamp is covered on the lower clamp, the lower contour surface of the inner cavity of the upper clamp is pressed on the contour edge of the mask to be detected, and the air flow channel of the upper clamp is communicated with the air flow channel of the lower clamp in an air flow mode; the upper contour surface of the mask to be detected table and the lower contour surface of the inner cavity of the upper clamp are elastic bodies, and the shapes of the elastic bodies are saddle surfaces which are mutually attached; the upper clamp and the lower clamp are provided with annular rubber rings which are mutually occluded, and the lower clamp is provided with an arc-shaped supporting bridge. The utility model discloses simple structure, convenient to use can strut and wait to examine the gauze mask, increases filter area, still possesses good gas tightness simultaneously, can effectively improve gauze mask filtering property detection test's test quality and efficiency of software testing.

Description

Filter performance detection clamp for mask

Technical Field

The utility model relates to a check out test set field especially relates to a filtering capability of gauze mask detects anchor clamps.

Background

The wearing mask can effectively filter air sucked into the lung by the pool, and is very important when pedestrians, medical staff and factory workers need to isolate dust, germs and toxic gas and select a proper mask. The protective filtering type mask can effectively filter out a plurality of harmful substances in the air. Aiming at the specific requirements of workers in various industries, China has developed corresponding mask standards to standardize the domestic mask market. The standard of protective filter masks implemented in China is mostly mandatory product standard, and the filtering efficiency is an important detection item. According to the standards, filtration efficiency testing requires that the mask body be attached to the test device in an airtight manner using suitable clamps. The fixing mode of the traditional clamp is complicated, the efficiency is low, the air tightness is poor, and the detection result is easily influenced.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the not enough of existence among the prior art, the utility model provides a filtering capability of gauze mask detects anchor clamps, this anchor clamps simple structure, convenient to use can strut and wait to examine the gauze mask, and increase filter area still possesses good gas tightness simultaneously, can effectively improve the test quality and the efficiency of software testing that filter gauze mask performance detects the experiment.

The technical scheme is as follows: in order to achieve the above object, the utility model discloses a filtering performance detection clamp for a mask, which comprises an upper clamp and a lower clamp, wherein the upper clamp comprises a hollow upper clamp shell and a hollow upper clamp inner cavity, the upper clamp inner cavity is integrally formed inside the upper clamp shell, and the upper clamp shell and the upper clamp inner cavity form an upper clamp airflow channel; the lower fixture comprises a hollow lower fixture base and a hollow mask inspection platform, the mask inspection platform is integrally formed on the lower fixture base, and the lower fixture base and the mask inspection platform form a lower fixture airflow channel; the gauze mask is examined and is waited to treat bench and be provided with and examine the gauze mask, it establishes to go up the anchor clamps cover on the anchor clamps down, the lower profile face pressfitting of going up the anchor clamps inner chamber is examining gauze mask profile edge, go up anchor clamps airflow channel with anchor clamps airflow channel air current intercommunication down.

Further, go up the lower profile face of anchor clamps inner chamber with the last profile face of waiting to examine the platform of gauze mask is the elastomer, works as the lower profile face pressfitting of last anchor clamps inner chamber is in when the profile face is examined to the gauze mask is examined to examine a platform, go up anchor clamps shell lower profile face with there is a section interval between the profile face on the lower anchor clamps base.

Furthermore, a plurality of first annular rubber rings are arranged on the inner wall of the upper clamp shell at equal intervals, and a plurality of second annular rubber rings are arranged on the outer wall of the mask to-be-detected table at equal intervals; when the lower contour surface of the inner cavity of the upper clamp is pressed on the contour surface of the mask to be detected on the platform, the first annular rubber rings and the second annular rubber rings are mutually staggered to form an occlusion shape.

Furthermore, the upper contour surface of the mask to be detected table and the lower contour surface of the inner cavity of the upper clamp are saddle surfaces which are mutually attached; the gauze mask is examined and is waited to wait to be provided with and spanes lower anchor clamps airflow channel's arc support bridge.

Furthermore, a plurality of air holes are formed in the arc-shaped supporting bridge.

Furthermore, a plurality of positioning blocks are arranged on the outer wall of the mask to-be-detected table; and a plurality of positioning grooves corresponding to the positioning blocks are formed in the inner wall of the upper clamp shell.

Has the advantages that: the utility model discloses a filtering performance detection clamp of a mask, which comprises an upper clamp and a lower clamp, wherein the upper clamp and the lower clamp the end surface shape of the mask to be detected into saddle surfaces which are mutually laminated, and an arc-shaped supporting bridge is also arranged on the lower clamp, so that the mask can be unfolded, and the filtering area of the mask is increased; the end faces of the mask to be detected, clamped by the upper clamp and the lower clamp, are both arranged to be elastic bodies, so that the mask can be pressed better, and the air tightness is increased; meanwhile, the upper clamp and the lower clamp are also provided with annular rubber rings which are meshed with each other, so that the air tightness of the clamps is further increased, and the test quality and the test efficiency of the mask filtering performance test are improved.

Drawings

FIG. 1 is a schematic view of a clamp structure;

FIG. 2 is a schematic view of a lower clamp structure;

FIG. 3 is a schematic view of the upper clamp structure;

FIG. 4 is a three-dimensional schematic view of a clamp assembly;

figure 5 is a side view of the clamp assembly.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The mask filtering performance detection clamp shown in fig. 1 to 5 comprises an upper clamp 1 and a lower clamp 2, wherein the upper clamp 1 comprises a hollow upper clamp shell 11 and a hollow upper clamp inner cavity 12, the upper clamp inner cavity 12 is integrally formed inside the upper clamp shell 11, and an upper clamp airflow channel 13 is formed by the upper clamp shell 11 and the upper clamp inner cavity 12; the lower clamp 2 comprises a hollow lower clamp base 21 and a hollow mask inspection platform 22, the mask inspection platform 22 is integrally formed on the lower clamp base 21, and the lower clamp base 21 and the mask inspection platform 22 form a lower clamp airflow channel; the mask to be detected is arranged on the mask to be detected table 22, the upper clamp 1 covers the lower clamp 2, the lower contour surface of the inner cavity 12 of the upper clamp is pressed on the contour edge of the mask to be detected, clamping and fixing of the mask to be detected are achieved, and the upper clamp airflow channel 13 is in airflow communication with the lower clamp airflow channel 23; during detection, gas passes through the mask to be detected from the gas flow channel.

The lower contour surface of the inner cavity 12 of the upper clamp and the upper contour surface of the mask to-be-detected table 22 are elastic bodies, so that the pressing effect of the mask to be detected can be improved, and meanwhile, the air tightness is improved; work as the lower profile surface pressfitting of last anchor clamps inner chamber 12 is in when the platform 22 upper profile surface is examined to the gauze mask, go up anchor clamps shell 11 lower profile surface with there is a section interval between the profile surface on the anchor clamps base 21 down, keep the state that does not laminate, thereby can guarantee the lower profile surface of last anchor clamps inner chamber 12 with the gauze mask is examined the last profile surface of examining platform 22 and is kept the pressfitting to examining the gauze mask all the time.

A plurality of first annular rubber rings 71 are equidistantly arranged on the inner wall of the upper clamp shell 11, and a plurality of second annular rubber rings 72 are equidistantly arranged on the outer wall of the mask to-be-detected table 22; the height of the protruding part of the annular rubber ring is slightly larger than the distance between the inner wall of the upper clamp shell 11 and the upper outer wall of the mask to-be-detected table 22; when the lower contour surface of the inner cavity 12 of the upper clamp is pressed on the upper contour surface of the mask inspection platform 22, the first annular rubber rings 71 and the second annular rubber rings 72 are mutually staggered to form an occlusion shape, and the annular rubber rings are tightly attached to the wall of the clamp, so that the clamp has good air tightness, and further, the detection error of the mask filtering performance caused by insufficient air tightness is reduced.

The shapes of the upper contour surface of the mask to be detected table 22 and the lower contour surface of the upper clamp inner cavity 12 are saddle surfaces which are mutually attached, so that the mask to be detected can be effectively unfolded by the saddle surfaces, the filtering area of the mask is increased, and the accuracy of a detection test is improved; the gauze mask is examined and is provided with on the platform 22 and span lower anchor clamps airflow channel 23's arc supports bridge 6 for supplementary the gauze mask of examining is examined to strut.

The arc-shaped supporting bridge 6 arranged in the airflow channel can generate certain blocking effect on airflow, and meanwhile, the direction is changed, so that a part of filtering area of the mask to be detected is reduced; therefore, the plurality of air holes 61 are formed in the arc-shaped supporting bridge 6, so that the influence of the arc-shaped supporting bridge 6 on air flow can be reduced, and meanwhile, the contact area between the arc-shaped supporting bridge 6 and the mask is also reduced.

A plurality of positioning blocks 41 are arranged on the outer wall of the mask to-be-detected table 22; a plurality of positioning grooves 42 corresponding to the positioning blocks 41 are arranged on the inner wall of the upper clamp shell 11; the positioning between the upper clamp and the lower clamp can be realized by matching the positioning block 41 with the positioning groove 42, so that the use of the clamps is facilitated.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. The utility model provides a filterability of gauze mask detects anchor clamps which characterized in that: the clamp comprises an upper clamp (1) and a lower clamp (2), wherein the upper clamp (1) comprises a hollow upper clamp shell (11) and a hollow upper clamp inner cavity (12), the upper clamp inner cavity (12) is integrally formed in the upper clamp shell (11), and the upper clamp shell (11) and the upper clamp inner cavity (12) form an upper clamp airflow channel (13); the lower clamp (2) comprises a hollow lower clamp base (21) and a hollow mask inspection platform (22), the mask inspection platform (22) is integrally formed on the lower clamp base (21), and the lower clamp base (21) and the mask inspection platform (22) form a lower clamp airflow channel; the gauze mask is provided with on examining platform (22) to be examined and is examined the gauze mask, it establishes to go up anchor clamps (1) cover anchor clamps (2) are last down, the lower profile surface pressfitting of going up anchor clamps inner chamber (12) is examining the gauze mask profile edge of examining, go up anchor clamps airflow channel (13) with lower anchor clamps airflow channel (23) air current intercommunication.

2. The mask filtering performance detecting jig according to claim 1, wherein: go up the lower profile face of anchor clamps inner chamber (12) with the last profile face of platform (22) is examined to the gauze mask is the elastomer, works as the lower profile face pressfitting of last anchor clamps inner chamber (12) is in when platform (22) upper profile face is examined to the gauze mask, go up anchor clamps shell (11) lower profile face with there is a section interval between the profile face on lower anchor clamps base (21).

3. The mask filtering performance detecting jig according to claim 1, wherein: a plurality of first annular rubber rings (71) are arranged on the inner wall of the upper clamp shell (11) at equal intervals, and a plurality of second annular rubber rings (72) are arranged on the outer wall of the mask to-be-detected table (22) at equal intervals; when the lower contour surface of the inner cavity (12) of the upper clamp is pressed on the upper contour surface of the mask inspection platform (22), the first annular rubber rings (71) and the second annular rubber rings (72) are mutually staggered and meshed.

4. The mask filtering performance detecting jig according to claim 1, wherein: the upper contour surface of the mask to-be-detected table (22) and the lower contour surface of the upper clamp inner cavity (12) are saddle surfaces which are mutually attached; the gauze mask is provided with on examining platform (22) and spans arc support bridge (6) of lower anchor clamps airflow channel (23).

5. The mask filtering performance detecting jig according to claim 4, wherein: the arc-shaped supporting bridge (6) is provided with a plurality of air holes (61).

6. The mask filtering performance detecting jig according to claim 1, wherein: a plurality of positioning blocks (41) are arranged on the outer wall of the mask to-be-detected table (22); and a plurality of positioning grooves (42) corresponding to the positioning blocks (41) are formed in the inner wall of the upper clamp shell (11).