CN214277831U

CN214277831U - Test head of hand-held material air permeability tester

Info

Publication number: CN214277831U
Application number: CN202120479350.6U
Authority: CN
Inventors: 张雪波; 邱学明; 张国权; 张炳杰; 董庚亮; 张文斌; 刘欢; 杜显娟; 张黎建; 李猛; 高琮
Original assignee: Laizhou Electron Instrument Co ltd
Current assignee: Laizhou Electron Instrument Co ltd
Priority date: 2021-03-05
Filing date: 2021-03-05
Publication date: 2021-09-24
Anticipated expiration: 2031-03-05

Abstract

The utility model discloses a test head of hand-held type material air permeability apparatus, including the gauge head barrel that has the test end and survey the interface of tubes end, the test end includes that the front end is used for contacting the test mouth bulge loop of sample, surveys the mouth bulge loop outside and is equipped with and surveys a mouthful inclined plane, should survey a mouthful inclined plane front end lean on surveying mouthful bulge loop lateral wall, should survey a mouthful inclined plane rear end diameter is greater than the front end diameter. The portable handheld movable tester for the air permeability of the material can well complete the on-site nondestructive testing of a production field and a storehouse and realize the nondestructive testing of the air permeability of heavy materials, valuable materials and light and thin materials.

Description

Test head of hand-held material air permeability tester

Technical Field

The utility model relates to a test head of material air permeability test instrument, in particular to test head of material air permeability test instrument that portable, can handheld removal. The method is mainly used for detecting the air permeability of the air permeable material.

Background

The conventional test instrument for the air permeability of the existing fabric materials is mainly a fixed instrument arranged in a laboratory, and a test head of the test instrument is fixed on a test table top. In order to measure materials of different air permeability, the test head comprises a tube body on which a disk of a specified area is placed, a test sample is placed on the disk of the specified area, and then the test sample is pressed by a pressing plate having a central hole of the same size as the disk of the area with a set pressure. The main drawbacks of this type of test instrument are: firstly, in order to avoid air flow which does not pass through a test sample from entering a test head (namely air leakage at the edge of a test port), the accuracy of a test result is influenced, and a complex thickness self-adaptive pressure plate is designed for a pressure device, so that the cost of equipment accessories is increased. Meanwhile, the pressure of the pressure plate is usually required to be increased for a thick test sample, and the side wall of the port of the tube body of the test head extrudes the sample, so that the density of a material test part is changed, and the measured result is inaccurate. And secondly, delivering the sample to be cut to a laboratory for testing. On the one hand, the inconvenience of the test is caused, and on the other hand, the cutting of the sample can destroy the integrity of the whole sheet or roll of material, causing waste, especially when the central part of the whole sheet of material is sampled, the waste is more serious.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a test head of hand-held type material air permeability apparatus is provided, but field test material air permeability, needn't cut the sample to it is more accurate to record the result.

The technical scheme of the utility model as follows:

the utility model provides a test head of hand-held type material air permeability apparatus, includes the gauge head barrel that has test end and survey the mouth of pipe end, its characterized in that: the test end comprises a port measuring convex ring with the front end used for contacting a sample, a port measuring inclined plane is arranged on the outer side of the port measuring convex ring, the front end of the port measuring inclined plane leans against the outer side wall of the port measuring convex ring, and the diameter of the rear end of the port measuring inclined plane is larger than that of the front end.

Preferably, the measuring head cylinder comprises a front end cylinder and a rear end cylinder which are in threaded connection with each other, and a protective net is fixedly installed between the front end cylinder and the rear end cylinder; the test end is located on the front end cylinder, and the measuring head cylinder is located on the rear end cylinder.

Further preferably, a starting switch and an indicator light for displaying the state of the starting switch are mounted on the rear end cylinder.

Preferably, it further comprises a sample platen having a central vent hole; the rear end part of the sample pressure plate is provided with an annular inclined plane matched with the side port inclined plane.

Further preferably, the test end has a magnetic body for attracting the sample platen.

The utility model has the advantages of:

the utility model is a portable and hand-held movable type material air permeability testing head, which can conveniently complete the nondestructive testing of production sites and storehouse sites and realize the nondestructive testing of the air permeability of valuable materials; the accuracy of the measurement result of the nondestructive testing of the heavy material and the nondestructive testing of the air permeability of the light and thin material are ensured.

Second, to achieve non-destructive testing accuracy of the permeability properties of the material, it is necessary to prevent the test air stream from flowing from the test port edge of the test head without passing through the test material. The utility model discloses survey mouth department has the unique design who surveys mouthful bulge loop and survey a mouthful inclined plane, if the sample is thicker, let through exerting pressure survey mouthful inclined plane part or whole embedding sample, not only can ensure that the test air current is whole to be the air current through the sample, can not cause the test position density change moreover, further ensured the accuracy of test result.

And thirdly, the test air flow can be ensured to be the air flow passing through the light and thin sample after the light and thin sample is matched with the sample pressure plate.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is an enlarged view of a portion a of fig. 1.

Fig. 3 is a schematic structural diagram of a protection net in an embodiment of the present invention.

Detailed Description

The invention is further described with reference to the following figures and examples.

As shown in fig. 1 and 2, embodiments of the present invention include a probe barrel 2 having a test end 1 and a probe interface end 4. The testing end 1 comprises a port testing convex ring 1-1 with the front end used for contacting a sample, a port testing inclined plane 1-2 is arranged on the outer side of the port testing convex ring 1-1, the front end of the port testing inclined plane 1-2 leans against the outer side wall of the port testing convex ring 1-1, and the diameter of the rear end of the port testing inclined plane 1-2 is larger than that of the front end.

Specifically, the measuring head cylinder 2 includes a front end cylinder and a rear end cylinder which are connected with each other by a screw thread, and a protective net 5 as shown in fig. 3 is fixedly installed between the front end cylinder and the rear end cylinder to prevent impurities from entering the inside of the measuring head. The testing end 1 is located at the front end of the front end cylinder, and the measuring head cylinder 2 is located at the rear end of the rear end cylinder and used for being connected with the flexible body connecting pipe so that the measuring head can move the test sample.

The rear end cylinder body is provided with a starting switch 3 and an indicator light for displaying the state of the starting switch 3, so that the operation is conveniently carried out by hands.

The test tip 1 has a magnetic body for attracting the sample platen 7. When a thin and light sample 6 is tested, the test end 1 is close to the sample plane, and when the sample platen 7 is brought toward the test end 1 with the sample interposed therebetween, the steel sample platen 7 is attracted by the magnetic force of the magnetic body to press the sample 6.

The rear end part of the sample pressure plate 7 is provided with an annular inclined surface matched with the side port inclined surface 1-2. The annular inclined surface is attached to the side-port inclined surface 1-2 when the sample pressure plate 7 presses the sample 6.

The test proves that: the opening measuring convex ring and the opening measuring inclined plane are matched with each other, so that the best sealing effect can be achieved when a thick fabric is tested. For example, a filter material for water treatment, when a sample 6 is tested in a state that a production line or a warehouse is unfolded, a test program of an instrument is started, an operator holds a hand to hold a test head, as long as a test end 1 is pressed into a sample plane, a thin-wall test port convex ring 1-1 is directly embedded into the surface of the sample, if the sample 6 is thick or soft, a test port inclined plane 1-2 can continuously go deep into the sample to ensure that test airflow passes through the sample, a thumb presses a starting switch 3, an indicator light is turned on and simultaneously an instrument executes a test command to start testing the air permeability of the sample, after the test is finished, the indicator light is turned off, and after the indicator light is turned off, the operator can move the test head to perform the next test program.

Claims

1. The utility model provides a test head of hand-held type material air permeability apparatus, includes gauge head barrel (2) that has test end (1) and survey interface of tubes end (4), its characterized in that: the test end (1) comprises a port measuring convex ring (1-1) with the front end used for contacting a sample, a port measuring inclined plane (1-2) is arranged on the outer side of the port measuring convex ring (1-1), the front end of the port measuring inclined plane (1-2) leans against the outer side wall of the port measuring convex ring (1-1), and the diameter of the rear end of the port measuring inclined plane (1-2) is larger than that of the front end.

2. The test head of the hand-held material air permeability tester of claim 1, wherein: the measuring head cylinder (2) comprises a front end cylinder and a rear end cylinder which are in threaded connection with each other, and a protective screen (5) is fixedly arranged between the front end cylinder and the rear end cylinder; the test end (1) is located on the front end cylinder, and the measuring head cylinder (2) is located on the rear end cylinder.

3. The test head of the hand-held material air permeability tester of claim 2, wherein: the rear end cylinder body is provided with a starting switch (3) and an indicator light for displaying the state of the starting switch (3).

4. A test head for a hand-held material air permeability apparatus as claimed in claim 1, 2 or 3, wherein: it also includes a sample platen (7) with a central vent hole; the rear end part of the sample pressure plate (7) is provided with an annular inclined plane matched with the side port inclined plane (1-2).

5. The test head of the hand-held material air permeability tester of claim 4, wherein: the test end (1) has a magnetic body for attracting the sample platen (7).