CN113533167A

CN113533167A - Air permeability tester

Info

Publication number: CN113533167A
Application number: CN202110800719.3A
Authority: CN
Inventors: 巫日涵; 巫班金
Original assignee: Shenzhen Refond Equipment Co ltd
Current assignee: Shenzhen Refond Equipment Co ltd
Priority date: 2021-07-15
Filing date: 2021-07-15
Publication date: 2021-10-22

Abstract

The invention discloses a gas permeability tester, which comprises a tester, wherein a fixing mechanism is arranged at the upper part of the tester, a testing mechanism is arranged at the lower part of the tester, a fixing frame of the fixing mechanism is hinged with the rear part of a mounting rod of a testing head, the tail end of the mounting rod is hinged with a moving frame penetrating through a working table, the moving frame is provided with a photoelectric sensor at the middle part of a Z-shaped support groove connected below the working table, the working table is hinged with a moving block in front of the moving frame, the moving block penetrates through the working table downwards and is connected with an electromagnet, one end of a first ventilating pipe of the testing mechanism provided with a first photoelectric switch is upwards communicated with the testing head, the other end of the first ventilating pipe is downwards communicated with the upper part of a rotary table, the lower part of the rotary table is communicated with an exhaust fan, and a silencer is arranged at a gas outlet of the exhaust fan. The air permeability tester adopting the structure is simple to operate, can realize quick replacement and identification of the test head, and can adjust the diameter of the test pipeline.

Description

Air permeability tester

Technical Field

The invention relates to the technical field of fabric air permeability testers, in particular to an air permeability tester.

Background

The air permeability tester is an instrument for testing the air permeability of textiles. During testing, a tested sample is placed in a channel with a fixed cross section, certain pressure difference is generated between the upper surface and the lower surface of the tested sample by specific airflow, and the airflow passing through the fabric can be automatically calculated by testing software according to the pressure difference cross section, so that the air permeability of the fabric is calculated. The existing air permeability tester on the market usually needs to manually input the size of a testing head, and the diameter of a measuring pipeline is not adjustable.

Disclosure of Invention

The invention aims to provide an air permeability tester which is simple to operate, can realize quick replacement and identification of a test head, and can adjust the diameter of a test pipeline.

In order to achieve the purpose, the invention provides a ventilation tester which comprises a tester, wherein a fixing mechanism is arranged at the upper part of the tester, a testing mechanism is arranged at the lower part of the tester, a fixing frame of the fixing mechanism is hinged with the rear part of a mounting rod of a testing head, a moving frame penetrating through a working table top is hinged at the tail end of the mounting rod, a photoelectric sensor is arranged in the middle of a Z-shaped support groove connected below the working table top, a moving block is hinged at the front part of the moving frame of the working table top, the moving block penetrates through the working table top downwards and is connected with an electromagnet, one end of a first ventilation pipe of the testing mechanism, provided with a first photoelectric switch, is upwards communicated with the testing head, the other end of the first ventilation pipe of the testing mechanism is downwards communicated with the upper part of a rotating disc, the lower part of the rotating disc is communicated with an exhaust fan, and a silencer is arranged at an air outlet of the exhaust fan.

Preferably, the carousel edge is equipped with the ventilation hole of a plurality of different diameters size, the pivot of carousel passes through the belt pulley connection of belt and motor, the ventilation hole downwards through the second ventilation pipe with the air exhauster intercommunication, the ventilation hole upwards with first ventilation pipe intercommunication.

Preferably, the fixing rod of the testing head is connected with the mounting groove of the mounting rod, the fixing rod is connected with the top of the mounting groove through a screw, and a ventilation plate is arranged between the testing head and the first ventilation pipe.

Preferably, the tail end of the mounting rod is provided with a limiting groove connected with the top of the moving block, and the upper part of the groove is connected with the bottom of the moving block.

Preferably, the electromagnet is connected with the lower part of the working table, and the guide rod at the lower part of the support is connected with the guide groove on the side wall of the movable frame.

Preferably, the locking lever cover in test head middle part is equipped with first spring, test head one side is equipped with the handle.

Preferably, the tail end of the mounting rod is connected with one end of a second spring, and the other end of the second spring is connected with the working table.

Preferably, a second photoelectric switch is arranged on one side of the rotating disc.

Therefore, the air permeability tester adopting the structure is simple to operate, can realize quick replacement and identification of the test head, and can adjust the diameter of the test pipeline.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

FIG. 1 is a schematic view of a permeability tester according to the present invention;

FIG. 2 is a front view of a permeability tester of the present invention;

FIG. 3 is a cross-sectional view of a fixing mechanism of the air permeability tester of the present invention;

FIG. 4 is a front view of a turntable of a testing mechanism of an air permeability tester according to the present invention.

Reference numerals

1. A fixing mechanism; 2. a testing mechanism; 3. a test head; 4. a fixed mount; 5. mounting a rod; 6. a moving block; 7. a turntable; 8. an exhaust fan; 9. a first vent pipe; 10. a muffler; 11. a second vent pipe; 12. a motor; 13. a movable frame; 14. a second spring; 15. an electromagnet; 16. a work table; 17. a photosensor; 18. a support; 19. a first photoelectric switch; 20. a second photoelectric switch; 21. a vent hole; 22. fixing the rod; 23. a gas permeable plate; 24. a limiting groove.

Detailed Description

The technical solution of the present invention is further illustrated by the accompanying drawings and examples.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Fig. 1 is a schematic view of a gas permeability tester of the present invention, fig. 2 is a front view of a gas permeability tester of the present invention, fig. 3 is a sectional view of a fixing mechanism of a gas permeability tester of the present invention, fig. 4 is a front view of a turntable of a testing mechanism of a gas permeability tester of the present invention, and as shown in the figure, a gas permeability tester includes a tester, in which a fixing mechanism 1 is provided at an upper portion of the tester, and a testing mechanism 2 is provided at a lower portion thereof. The fixed frame 4 of the fixing mechanism 1 is hinged with the rear part of the mounting rod 5 of the test head 3, and the tail end of the mounting rod 5 is hinged with a movable frame 13 penetrating through the working table surface 16. A photoelectric sensor 17 is arranged in the middle of a groove of a Z-shaped support 18 connected below a working table surface 16 of the moving frame 13, a moving block 6 is hinged to the working table surface 16 in front of the moving frame 13, and the moving block 6 penetrates through the working table surface 16 downwards to be connected with an electromagnet 15. The first vent pipe 9 of the testing mechanism 2 is provided with one end of a first photoelectric switch 19 which is communicated with the testing head 3 upwards, the other end of the first photoelectric switch is communicated with the upper part of the turntable 7 downwards, the lower part of the turntable 7 is communicated with the exhaust fan 8, and the air outlet of the exhaust fan 8 is provided with a silencer 10. The fixing mechanism 1 fixes the fabric, and the testing mechanism 2 tests the air permeability of the fabric. The fabric is placed at the position of the test head 3, when the test head 3 is pressed downwards, the front end of the installation rod 5 hinged on the fixed frame 4 is downward, and the rear end of the installation rod is tilted upwards. The moving frame 13 moves upward along with the mounting rod 5, the second spring 14 is stretched, and the electromagnet 15 is connected to the lower portion of the moving block 6 when the photoelectric sensor 17 detects a change in position. The upper part of the moving block 6 is connected with the mounting rod 5, the tail end of the mounting rod 5 is fixed, and therefore the test head 3 is guaranteed to fix the fabric. After the test head 3 is pressed again, the photoelectric sensor 17 senses a signal, the electromagnet 15 releases the moving block 6, the second spring 14 recovers deformation, and the tail end of the mounting rod 5 is driven to move downwards, so that the test head 3 is driven to be lifted upwards, and the fabric is replaced. After the exhaust fan 8 is started, air at the fabric is extracted downwards, so that the air permeability test of the fabric is completed. The silencer 10 is arranged at the air outlet of the exhaust fan 8, so that the noise generated when the tester works is greatly reduced, and the noise pollution to the test environment is reduced. The size of the test head 3 can be rapidly identified by the arrangement of the first photoelectric switch 19, and errors in manual input of the size of the test head 3 are avoided. In addition to the first photoelectric switch 19, a reed switch, a proximity sensor, a micro switch, or the like may be used to perform the same function.

The edge of the rotary disk 7 is provided with a plurality of vent holes 21 with different diameters, and the rotating shaft of the rotary disk 7 is connected with a belt pulley of the motor 12 through a belt. The vent 21 is communicated with the exhaust fan 8 through a second vent pipe 11 downwards, and the vent 21 is communicated with the first vent pipe 9 upwards. The motor 12 drives the rotating disc 7 to rotate through a belt, so that the size of the vent hole 21 between the first vent pipe 9 and the second vent pipe 11 is changed, and the air flow at the fabric position is changed. The arrangement of the vent holes 21 with different diameters realizes a gas measuring pipeline with variable vent caliber, which can be controlled by a program and driven by the motor 12. By switching the vent holes 21 of different diameters, the measuring ranges can be switched to measure the airflows of different sizes.

The fixed rod 22 of the test head 3 is connected with the mounting groove of the mounting rod 5, the fixed rod 22 is connected with the top of the mounting groove through a screw, and a ventilation plate 23 is arranged between the test head and the first ventilation pipe 9. When changing test head 3, unscrew the screw earlier, take out dead lever 22 from the mounting groove is inside again, accomplish taking off of test head 3. The test head 3 of different sectional areas has the dead lever 22 of equidimension, need change a series of parts when avoiding changing different test heads 3, is convenient for realize the quick replacement of test head 3. Dead lever 22 and mounting groove phase-match guarantee the stability of test head 3 in the use, improve the work efficiency of tester. The breathable plate 23 is arranged, so that the fabric can be conveniently fixed between the testing head 3 and the breathable plate 23 for testing.

The tail end of the mounting rod 5 is provided with a limiting groove 24 connected with the top of the moving block 6, and the upper part of the groove is connected with the bottom of the moving block 6. When the mounting rod 5 is locked, the top of the moving block 6 is connected with the limiting groove 24 and abuts against the mounting rod 5 so that the mounting rod cannot rotate. After the mounting rod 5 is unlocked, the moving block 6 rotates away from the limiting groove 24, and the mounting rod 5 can rotate freely. The limiting groove 24 is larger than the top of the moving block 6, so that the moving block 6 can smoothly enter and exit along the limiting groove 24.

The electromagnet 15 is connected with the lower part of the working table 16, and a guide rod at the lower part of the bracket 18 is connected with a guide groove on the side wall of the movable frame 13. The guide rod moves along the guide slot, so that the movable frame 13 has a fixed motion track, and further, the fixed motion track of the installation rod 5 hinged with the movable frame is ensured.

The check lock cover in 3 middle parts of test head is equipped with first spring, and 3 one sides of test head are equipped with the handle. The setting of first spring provides decurrent pressure for the clamping face of test head 3 with the fabric contact, guarantees that test head 3 can adapt to the sample of different thickness, and provides stable clamping-force all the time, guarantees the gas tightness around the fabric, improves the accuracy of tester.

The end of the mounting rod 5 is connected with one end of a second spring 14, and the other end of the second spring 14 is connected with a work table 16. The second spring 14 is provided to ensure that the mounting rod 5 maintains the tilting state of one end of the test head 3 when not locked.

A second photoelectric switch 20 is arranged on one side of the rotary disk 7, and the second photoelectric switch 20 is arranged for reading the vent 21 and identifying which vent 21 is between the first vent pipe 9 and the second vent pipe 11.

When in use, the fixing rod 22 of the test head 3 is connected with the mounting groove and fixed by a screw. The fabric is placed on the breathable plate 23, the test head 3 is pressed downwards, the photoelectric sensor 17 detects the movement, the electromagnet 15 is connected with the moving block 6, and finally the moving block 6 locks the mounting rod 5. The motor 12 is started and the vent 21 between the first vent pipe 9 and the second vent pipe 11 is replaced when the rotary disc 7 rotates. The second photoelectric switch 20 recognizes the air vent 21, and after the replacement is completed, the motor 12 stops rotating. And starting the exhaust fan 8 to test the air permeability of the fabric.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the invention without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a gas permeability tester which characterized in that: including the tester, tester upper portion is equipped with fixed establishment, and its lower part is equipped with accredited testing organization, fixed establishment's mount is articulated with test head installation pole rear portion, the terminal articulated removal frame that has a through table surface of installing the pole, the removal frame is in the zigzag support recess middle part that table surface below is connected is equipped with photoelectric sensor, table surface is in removal frame the place ahead articulates there is the movable block, the movable block runs through downwards table surface is connected with the electro-magnet, the first ventilation pipe of accredited testing organization be equipped with first photoelectric switch's one end upwards with the test head intercommunication, its other end downwards with carousel top intercommunication, carousel below and air exhauster intercommunication, the gas outlet of air exhauster is equipped with the silencer.

2. A gas permeability tester as claimed in claim 1, wherein: the carousel edge is equipped with the ventilation hole of a plurality of different diameters size, the belt pulley connection of belt and motor is passed through in the pivot of carousel, the ventilation hole downwards through the second ventilation pipe with the air exhauster intercommunication, the ventilation hole upwards with first ventilation pipe intercommunication.

3. A gas permeability tester as claimed in claim 1, wherein: the fixed rod of the test head is connected with the mounting groove of the mounting rod, the fixed rod is connected with the top of the mounting groove through a screw, and a ventilation plate is arranged between the test head and the first ventilation pipe.

4. A gas permeability tester as claimed in claim 1, wherein: the tail end of the mounting rod is provided with a limiting groove connected with the top of the moving block, and the upper part of the groove is connected with the bottom of the moving block.

5. A gas permeability tester as claimed in claim 1, wherein: the electromagnet is connected with the lower part of the working table surface, and the guide rod at the lower part of the support is connected with the guide groove on the side wall of the movable frame.

6. A gas permeability tester as claimed in claim 1, wherein: the utility model discloses a test head, including test head, the check lock lever cover in middle part is equipped with first spring, test head one side is equipped with the handle.

7. A gas permeability tester as claimed in claim 1, wherein: the tail end of the mounting rod is connected with one end of a second spring, and the other end of the second spring is connected with the working table.

8. A gas permeability tester as claimed in claim 1, wherein: and a second photoelectric switch is arranged on one side of the turntable.