CN215066004U

CN215066004U - Respirator breathing resistance test machine

Info

Publication number: CN215066004U
Application number: CN202120624193.3U
Authority: CN
Inventors: 孙志略; 熊正燕
Original assignee: Zhongke Convergence Fujian Testing Technology Co ltd
Current assignee: Zhongke Convergence Fujian Testing Technology Co ltd
Priority date: 2021-03-26
Filing date: 2021-03-26
Publication date: 2021-12-07
Anticipated expiration: 2031-03-26

Abstract

The utility model discloses a mask resistance test machine of breathing, including the test machine main part, be equipped with the head mould that is used for wearing the test gauze mask in the test machine main part, be equipped with the intercommunication in the head mould the mouth of head mould is to the breathing pipe of bottom, wherein, test machine main part one side is equipped with the head mould mount pad that is used for installing the head mould, the head mould can be dismantled and locate on the head mould mount pad, be equipped with on the head mould mount pad and be used for doing the trachea of breathing pipe air feed, tracheal inlet end with the test machine main part is connected, tracheal end of giving vent to anger with can dismantle the connection through connecting device between the breathing pipe.

Description

Respirator breathing resistance test machine

Technical Field

The utility model relates to a gauze mask tester technical field, concretely relates to gauze mask resistance test machine of breathing.

Background

The gauze mask generally indicates to wear and is used for filtering the air of business turn over oral-nasal part to reach the apparatus that blocks harmful gas, smell, droplet business turn over wearer's oral-nasal, in order to make the protectiveness of gauze mask obtain guaranteeing, need breathe the resistance test to the gauze mask, satisfy the national requirement, protect user's safety, in order to accelerate the test of gauze mask respiratory resistance, need a tester of being convenient for to install different model gauze masks to detect.

In the Chinese invention application number: CN201810313029.3 discloses a mask breathing resistance testing machine, which comprises a cabinet body, a detection device, a head die and an industrial personal computer connected with the detection device, wherein the detection device comprises a high-pressure blower provided with an air inlet interface and an air outlet interface; the switching valve is connected with the air inlet interface and the air outlet interface of the high-pressure blower through pipelines and comprises a first outlet which is used for switching the connection of the first outlet with the air inlet interface or the air outlet interface; the flowmeter is connected with the first outlet and outputs a detection flow rate signal based on the gas flow rate of the first outlet; one end of the breathing pipeline is connected with the flowmeter, and the other end of the breathing pipeline is connected to the head die; the micro-pressure meter is connected to the breathing pipeline and used for detecting the air pressure in the breathing pipeline and outputting a corresponding air pressure signal; this respiratory resistance tester, in the use, the gauze mask of different model sizes all uses same head mould to test, causes the inaccuracy that detects data easily, and single head mould makes the gauze mask application range that detects single to the application range's of gauze mask shortcoming has been reduced.

SUMMERY OF THE UTILITY MODEL

Therefore, to the above-mentioned problem, the utility model provides a can quick replacement head mould to solve the gauze mask of the not big or small gauze mask of model and all use the gauze mask breathing resistance tester that same head mould carries out the problem of testing.

For realizing the above-mentioned purpose, the technical scheme of the utility model a mask resistance test machine of breathing is provided, including the test machine main part, be equipped with the head mould that is used for wearing the test gauze mask in the test machine main part, be equipped with the intercommunication in the head mould the mouth of head mould is to the breathing pipe of bottom, test machine main part one side is equipped with the head mould mount pad that is used for installing the head mould, the head mould can be dismantled and locate on the head mould mount pad, be equipped with on the head mould mount pad and be used for doing the trachea of breathing pipe air feed, tracheal inlet end with the test machine main part is connected, tracheal giving vent to anger the end with can dismantle the connection through connecting device between the breathing pipe.

The further improvement is that: connecting device locates including fixed locating on the first mould mount pad lie in trachea gas outlet department be used for with breathing pipe sliding connection's connecting pipe, fixed locating the connecting pipe top is used for the connecting pipe with sealed sealing washer, at least one are located during breathing pipe sliding connection be used for connecting breathing pipe on the connecting pipe will the first mould is fixed in locking means on the connecting pipe, locate be used for the release on the first mould locking means's release.

The further improvement is that: locking device includes follows the connecting pipe is radially located slide groove on the connecting pipe, slide locate slide the inslot be used for to support in breathing pipe is last with the fixed fastener of head mould, locate breathing pipe is last be used for with the spacing fastener groove of fastener cooperation.

The further improvement is that: the clamping piece comprises a sliding clamping block which is slidably arranged in the sliding groove and an abutting spring which is arranged between the sliding clamping block and the sliding groove and used for driving the sliding clamping block to abut against the clamping groove.

The further improvement is that: the end face of the sliding clamping block abutting against the clamping groove is an arc-shaped end face.

The further improvement is that: the releasing device comprises a releasing channel which is radially arranged on the head die and is positioned at the clamping groove and used for communicating the breathing pipeline with the outside, a push rod which is slidably arranged in the releasing channel and used for pushing the sliding fixture block to be separated from the clamping groove, and a resetting device which is arranged between the push rod and the head die and used for resetting after the push rod pushes the sliding fixture block to be separated from the clamping groove.

The further improvement is that: the reset device is a reset spring sleeved on the push rod.

The further improvement is that: the head die is detachably provided with a pressing device used for tightly attaching the test mask to the mouth and the nose of the head die.

The further improvement is that: the pressing device comprises two fixed columns which are respectively arranged on two sides of the head die, an elastic pressure belt which is wound on the front of the head die and detachably connected to the two fixed columns and used for tightly attaching the test mask to the mouth and the nose of the head die, and clamping rings which are arranged on two sides of the elastic pressure belt and used for connecting the elastic pressure belt with the fixed columns.

The further improvement is that: the elastic pressing belt comprises a nose bridge elastic pressing belt used for enabling the testing mask to be tightly attached to the nose bridge of the head model and a lower jaw elastic pressing belt used for enabling the testing mask to be tightly attached to the lower jaw of the head model, two ends of the nose bridge elastic pressing belt and two ends of the lower jaw elastic pressing belt are fixedly connected through the clamping rings, and a nose bridge clamping block used for being attached to the nose bridge of the head model is arranged on the nose bridge elastic pressing belt.

A gauze mask respiratory resistance test machine, following beneficial effect has:

1. the utility model discloses a set up locking means and release and can be quick install fast and dismantle the head mould on the head mould mount pad, can change corresponding head mould when testing the gauze mask of different specifications to guarantee the accuracy of test result, and promote the use variety of test machine, solve single head mould detection range and make the single problem of gauze mask application range that detects for a short time.

2. The utility model discloses a set up will slide the fixture block support in that terminal surface of block groove sets up to circular-arc terminal surface for slide the fixture block and change the slip in breathing pipe, and can be more in the same direction as smooth entering breathing pipe, quick convenient when having guaranteed the die installation.

3. The utility model discloses a set up closing device for the test gauze mask laminates the head mould more when wearing on the head mould, guarantees the leakproofness in the testing process.

4. The utility model discloses well closing device presses area and lower jaw elastic pressure area through setting up bridge of the nose elastic pressure for the test gauze mask is located bridge of the nose and can hugs closely the head mould with lower jaw department, and does not influence the test gauze mask test result that is located head mould oronasal department, has guaranteed the accuracy of test result, and bridge of the nose elastic pressure area is equipped with the bridge of the nose fixture block that is used for laminating the head mould nose bridge, has reduced the production that the test gauze mask is located bridge of the nose department space when wearing greatly, has improved the accuracy nature of test greatly.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of the breathing tube of the present invention;

FIG. 3 is a schematic structural view of the head mold of the present invention in an installed state;

FIG. 4 is an enlarged view taken at A in FIG. 3;

fig. 5 is a schematic view of the structure of the pressing device in use;

fig. 6 is a schematic structural view of the pressing device of the present invention.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

Referring to fig. 1 and 2, a mask breathing resistance testing machine comprises a testing machine main body 1, wherein a head mold 2 used for wearing a testing mask is arranged on the testing machine main body 1, a breathing pipeline 21 communicating a mouth part of the head mold to the bottom part is arranged in the head mold 2, as shown in fig. 1 and 3, a head mold mounting seat 3 used for mounting the head mold is arranged on one side of the testing machine main body 1, the head mold 2 is detachably arranged on the head mold mounting seat 3, an air pipe 11 used for supplying air to the breathing pipeline 21 is arranged on the head mold mounting seat 3, an air inlet end of the air pipe 11 is connected with the testing machine main body 1, and an air outlet end of the air pipe 11 is detachably connected with the breathing pipeline 21 through a connecting device;

the connecting device comprises a connecting pipe 41 fixedly arranged on the head die mounting seat 3 and positioned at the air outlet end of the air pipe 11 and used for being in sliding connection with the breathing pipeline 21, a sealing ring 42 fixedly arranged at the top end of the connecting pipe 41 and used for sealing when the connecting pipe 41 is in sliding connection with the breathing pipeline 21, at least one locking device arranged on the connecting pipe 41 and used for connecting the breathing pipeline 21 to fix the head die 2 on the connecting pipe 41, and a releasing device arranged on the head die 2 and used for releasing the locking device, wherein the number of the locking devices is two, and the two locking devices are symmetrically arranged on the connecting pipe 41, so that the number of the releasing devices used for releasing the locking devices is also two; the locking device and the releasing device are arranged, so that the head die can be quickly installed and detached on the head die installation seat 3, and the head die with the corresponding size can be replaced when the masks with different specifications are tested, so that the accuracy of a test result is ensured, and the use diversity of a testing machine is improved;

referring to fig. 4, the locking device includes a sliding groove 51 disposed on the connecting pipe 41 along the radial direction of the connecting pipe 41, a locking member slidably disposed in the sliding groove 51 for abutting against the breathing conduit 21 to fix the head mold, and a locking groove 52 disposed on the breathing conduit 21 for limiting the locking member in cooperation with the locking member, the locking member includes a sliding block 53 slidably disposed in the sliding groove 51, a resisting spring 54 disposed between the sliding block 53 and the sliding groove 51 for driving the sliding block 53 to abut against the locking groove 52, in order to make the locking member slide more easily in the breathing conduit 21, wherein the end surface of the sliding block 53 abutting against the locking groove 52 is an arc-shaped end surface, the locking groove 52 is matched with the sliding block 53, so that the locking groove 52 is an arc-shaped locking groove, and in order to make the head mold 2 mounted on the connecting pipe 41 more easily in the present invention, namely, the clamping piece can enter the breathing pipeline 21 more smoothly, so that a fillet is arranged at the inlet of the breathing pipeline 21 positioned at the bottom of the head die 2, the clamping piece can enter the breathing pipeline 21 more smoothly by matching the fillet with the sliding clamping block 53 with an arc-shaped end surface, and the rapid and convenient installation of the head die is ensured;

referring to fig. 4, the releasing device includes a releasing channel 61 radially disposed on the head mold at the engaging groove 52 for communicating the breathing conduit 21 with the outside, a push rod 62 slidably disposed in the releasing channel 61 for pushing the sliding fixture block 53 to be separated from the engaging groove 52, and a resetting device disposed between the push rod 62 and the head mold 2 for resetting the sliding fixture block 53 after the push rod 62 pushes the sliding fixture block 53 to be separated from the engaging groove 52, wherein the resetting device is a resetting spring 63 sleeved on the push rod 62.

Referring to fig. 5, because the fitting degree of the test mask worn on the head model 2 cannot be compared with the fitting degree of the test mask worn on the head of a real human body, especially, a gap exists at the bridge of the nose, and if the fitting degree is not enough when the test mask is worn, the gap between the test mask and the head model 2 is too large, so that the accuracy of the test is affected, a pressing device for tightly attaching the test mask to the mouth and nose of the head model 2 is detachably arranged on the head model 2, and the pressing device comprises two fixing posts 71 respectively arranged at two sides of the head model 2, an elastic pressure belt wound around the front of the head model 2 and detachably connected to the two fixing posts 1 for tightly attaching the test mask to the mouth and nose of the head model, and clamping rings 72 arranged at two sides of the elastic pressure belt for connecting the elastic pressure belt with the fixing posts 71;

referring to fig. 5 and 6, the elastic pressing belt includes a nose bridge elastic pressing belt 73 for tightly fitting the test mask onto the nose bridge of the head model 2 and a mandible elastic pressing belt 74 for tightly fitting the test mask onto the mandible of the head model 2, two ends of the nose bridge elastic pressing belt 73 and two ends of the mandible elastic pressing belt 74 are fixedly connected through the snap ring 72, and a nose bridge clamping block 75 for tightly fitting the nose bridge of the head model 2 is arranged on the nose bridge elastic pressing belt 73.

The working principle is as follows:

firstly, selecting a head die 2 suitable for the wearing of a test mask, aligning a breathing pipeline 21 at the bottom of the head die 2 with a connecting pipe 41 on a head die mounting seat 3, enabling a clamping piece on the connecting pipe 41 to enter the breathing pipeline 21 along a fillet of the breathing pipeline 21, completing the mounting of the head die 2 when a sliding clamping block 53 abuts against a clamping groove 52, wearing the test mask on the head die 2, then buckling a clamping ring 72 at one end of an elastic pressure belt on a fixing column 71 at one side of the head die 2, then winding the elastic pressure belt on the front section of the head die 2, buckling the clamping ring 72 at the other end on the fixing column 71 at the other side of the head die 2, finally adjusting the positions of a nose bridge elastic pressure belt 73 and a mandible elastic pressure belt 74, tightly sticking a nose bridge clamping block 75 on the nose bridge of the head die 2, and completing the wearing of the test mask;

when the head die 2 needs to be replaced, the push rod 62 on the head die is pressed, the slide block 53 is pushed by the push rod 62 to be separated from the clamping groove rear 52, so that the clamping state of the clamping piece is released, and then the head die is lifted from the head die mounting seat 3 along with the movement, and the head die is detached.

Having shown and described the basic principles and essential features of the invention and its advantages, it will be understood by those skilled in the art that the present invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but is susceptible to various changes and modifications without departing from the spirit and scope of the invention, all of which are intended to be covered by the appended claims and their equivalents.

Claims

1. The utility model provides a mask respiratory resistance test machine, includes the test machine main part, be equipped with the head mould that is used for wearing the test gauze mask in the test machine main part, be equipped with the intercommunication in the head mould the mouth of head mould is to the respiratory tube way of bottom, its characterized in that: the testing machine comprises a testing machine main body and is characterized in that a head die mounting seat used for mounting a head die is arranged on one side of the testing machine main body, the head die is detachably arranged on the head die mounting seat, an air pipe used for supplying air to a breathing pipeline is arranged on the head die mounting seat, the air inlet end of the air pipe is connected with the testing machine main body, and the air outlet end of the air pipe is detachably connected with the breathing pipeline through a connecting device.

2. The mask respiratory resistance testing machine of claim 1, wherein: connecting device locates including fixed locating on the first mould mount pad lie in trachea gas outlet department be used for with breathing pipe sliding connection's connecting pipe, fixed locating the connecting pipe top is used for the connecting pipe with sealed sealing washer, at least one are located during breathing pipe sliding connection be used for connecting breathing pipe on the connecting pipe will the first mould is fixed in locking means on the connecting pipe, locate be used for the release on the first mould locking means's release.

3. The mask respiratory resistance testing machine of claim 2, wherein: locking device includes follows the connecting pipe is radially located slide groove on the connecting pipe, slide locate slide the inslot be used for to support in breathing pipe is last with the fixed fastener of head mould, locate breathing pipe is last be used for with the spacing fastener groove of fastener cooperation.

4. The mask respiratory resistance testing machine of claim 3, wherein: the clamping piece comprises a sliding clamping block which is slidably arranged in the sliding groove and an abutting spring which is arranged between the sliding clamping block and the sliding groove and used for driving the sliding clamping block to abut against the clamping groove.

5. The mask respiratory resistance testing machine of claim 4, wherein: the end face of the sliding clamping block abutting against the clamping groove is an arc-shaped end face.

6. The mask respiratory resistance testing machine of claim 4, wherein: the releasing device comprises a releasing channel which is radially arranged on the head die and is positioned at the clamping groove and used for communicating the breathing pipeline with the outside, a push rod which is slidably arranged in the releasing channel and used for pushing the sliding fixture block to be separated from the clamping groove, and a resetting device which is arranged between the push rod and the head die and used for resetting after the push rod pushes the sliding fixture block to be separated from the clamping groove.

7. The mask respiratory resistance testing machine of claim 6, wherein: the reset device is a reset spring sleeved on the push rod.

8. The mask respiratory resistance testing machine of claim 1, wherein: the head die is detachably provided with a pressing device used for tightly attaching the test mask to the mouth and the nose of the head die.

9. The mask respiratory resistance testing machine of claim 8, wherein: the pressing device comprises two fixed columns which are respectively arranged on two sides of the head die, an elastic pressure belt which is wound on the front of the head die and detachably connected to the two fixed columns and used for tightly attaching the test mask to the mouth and the nose of the head die, and clamping rings which are arranged on two sides of the elastic pressure belt and used for connecting the elastic pressure belt with the fixed columns.

10. The mask respiratory resistance testing machine of claim 9, wherein: the elastic pressing belt comprises a nose bridge elastic pressing belt used for enabling the testing mask to be tightly attached to the nose bridge of the head model and a lower jaw elastic pressing belt used for enabling the testing mask to be tightly attached to the lower jaw of the head model, two ends of the nose bridge elastic pressing belt and two ends of the lower jaw elastic pressing belt are fixedly connected through the clamping rings, and a nose bridge clamping block used for being attached to the nose bridge of the head model is arranged on the nose bridge elastic pressing belt.