Foam ventilation quantity testing tool

Abstract

The utility model discloses a foam ventilation quantity testing tool which comprises a base, a testing box is fixedly installed above the base, a surge tank is further fixed above the base, and a precision adjusting valve is arranged between the surge tank and the testing box. According to the foam ventilation quantity testing tool, air enters the surge tank through the inflow pipe to form compressed air, after the compressed air is adjusted through the precision adjusting valve, the compressed air makes contact with the foam through one through pipe and enters the other through pipe through the foam, and the air pressure difference between the two through pipes separated by the foam can be tested through the electronic differential pressure gauge; the air flow flowing through the unit area of the foam under certain wind pressure can be tested through the rotor flow meter, the testing structure is simple, the ventilation quantity of the foam can not be accurately tested conveniently, operation is easy, the foam is convenient to assemble and disassemble due to the arrangement of the foam testing clamp, and use convenience is high.

Description

Technical Field

[0001] The utility model relates to the technical field of foam ventilation volume testing, in particular to a foam ventilation volume testing tool. Background Art

[0002] Foam is a material made of foamed plastic particles, referred to as foam. Foam is divided into PU foam, antistatic foam, conductive foam, EPE, antistatic EPE, CR, EVA, bridged PE, SBR, EPDM, etc. Foam has a series of characteristics such as elasticity, light weight, fast pressure-sensitive fixation, easy to use, easy to bend, ultra-thin volume, and reliable performance. The existing foam needs to be tested for ventilation volume during the production process to test the quality of the foam, and then the existing test device has a complex test structure, which is not convenient for accurately testing the ventilation volume of the foam. Therefore, the utility model proposes a foam ventilation volume test tool to solve the above-mentioned problems. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a foam ventilation volume testing tool, which solves the problems mentioned in the above background technology.

[0004] To achieve the above objectives, the utility model is implemented through the following technical solutions: a foam ventilation volume testing tool, including a base, a test box is fixedly installed on the top of the base, a pressure-stabilizing tank is also fixed on the top of the base, a precision regulating valve is arranged between the pressure-stabilizing tank and the test box, the air inlet of the precision regulating valve is connected with the air outlet of the pressure-stabilizing tank through an air inlet pipe, the air outlet of the precision regulating valve is connected with one side of the test box through an air outlet pipe, and an electronic differential pressure gauge and a rotor flowmeter are also installed on the top of the base.

[0005] Preferably, the test box includes an outer shell and a cover fixed to the top of the outer shell, through tubes are fixed on both sides of the inner wall of the outer shell, a hollow receiving seat is fixed between the ends of the two through tubes, and a foam test fixture for fixing foam is inserted inside the hollow receiving seat.

[0006] Preferably, the foam testing fixture comprises an insert block, an open groove for accommodating foam is provided at the bottom of the insert block, round holes communicating with a through pipe are provided at both sides of the insert block, and a pull block is fixed above the insert block.

[0007] Preferably, a through slot adapted to the insert block is provided on the top of the cover.

[0008] Preferably, a pressure monitoring gauge is installed above the pressure stabilizing tank, and the electronic differential pressure gauge is used to test the air pressure difference between the two through pipes. One side of the pressure stabilizing tank is connected to an air inlet pipe.

[0009] Preferably, the rotor flowmeter is used to test the air flowing through a unit area of ​​foam.

[0010] Beneficial Effects

[0011] The utility model provides a foam ventilation test tool. Compared with the prior art, it has the following advantages:

[0012] Beneficial effects:

[0013] In the foam ventilation volume test tool, air enters the pressure regulating tank through the inflow pipe to form compressed air. After being adjusted by the precision regulating valve, the compressed air contacts the foam through the through pipe and enters another through pipe through the foam. The electronic differential pressure gauge can test the air pressure difference between the two through pipes separated by the foam. The rotor flowmeter can test the air flow rate flowing through the unit area of ​​the foam under a certain wind pressure. The test structure is simple, which is not convenient for accurately testing the foam ventilation volume. The operation is simple, and the setting of the foam test fixture is convenient for assembling and disassembling the foam, and it is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the first viewing angle structure of the utility model;

[0015] Figure 2 It is a three-dimensional diagram of the second viewing angle structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the disassembly of the housing and the foam testing fixture of the utility model;

[0017] Figure 4 It is a schematic diagram of the internal structure of the shell of the utility model.

[0018] In the figure: 1-base, 2-test box, 21-housing, 22-cover, 23-through pipe, 24-hollow receiving seat, 25-foam test fixture, 251-insert block, 252-opening groove, 253-round hole, 254-pull block, 3-pressure stabilizing tank, 4-precision regulating valve, 5-inlet pipe, 6-outlet pipe, 7-electronic differential pressure gauge, 8-rotor flowmeter, 9-through slot, 10-pressure monitoring meter, 11-air inlet pipe. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4The utility model provides a technical solution: a foam ventilation volume test tool, including a base 1, a test box 2 is fixedly installed above the base 1, a pressure-stabilizing tank 3 is also fixed above the base 1, a precision regulating valve 4 is arranged between the pressure-stabilizing tank 3 and the test box 2, an air inlet of the precision regulating valve 4 is connected with an air outlet of the pressure-stabilizing tank 3 through an air inlet pipe 5, an air outlet of the precision regulating valve 4 is connected with one side of the test box 2 through an air outlet pipe 6, and an electronic differential pressure gauge 7 and a rotor flowmeter 8 are also installed above the base 1.

[0021] In this embodiment, the test box 2 includes a shell 21 and a cover 22 fixed on the top of the shell 21. The cover 22 has good sealing performance at the contact with the shell 21. Through tubes 23 are fixed on both sides of the inner wall of the shell 21. A hollow receiving seat 24 is fixed between the ends of the two through tubes 23. A foam test fixture 25 for fixing foam is inserted inside the hollow receiving seat 24.

[0022] In this embodiment, the foam test fixture 25 includes an insert block 251, and an open groove 252 for accommodating foam is provided at the bottom of the insert block 251. The setting of the open groove 252 makes it convenient to insert the foam, and the positioning of the foam is achieved by squeezing the foam and the inner wall of the open groove 252. Circular holes 253 connected to the through pipe 23 are provided on both sides of the insert block 251, and a pull block 254 is fixed above the insert block 251. The setting of the pull block 254 makes it convenient to hold the insert block 251 by hand, and to facilitate the installation and removal of the insert block 251. The contact between the insert block 251 and the hollow accommodating seat 24 has good sealing.

[0023] In this embodiment, a through slot 9 adapted to the insert block 251 is provided on the top of the cover 22 to facilitate the insertion and placement of the insert block 251 , and the contact between the insert block 251 and the through slot 9 has good sealing performance.

[0024] In this embodiment, a pressure monitoring gauge 10 is installed above the pressure-stabilizing tank 3 to monitor the internal air pressure of the pressure-stabilizing tank 3. The two test tubes on the electronic differential pressure gauge 7 are respectively connected and fixed to the through pipes 23. The two electronic differential pressure gauges 7 are used to test the air pressure difference between the two through pipes 23. One side of the pressure-stabilizing tank 3 is connected to an air inlet pipe 11 to facilitate the entry of external air into the pressure-stabilizing tank 3.

[0025] In this embodiment, the test head of the rotor flowmeter 8 is connected and fixed to the test box 2, and the rotor flowmeter 8 is used to test the air flow rate flowing through the foam per unit area under a certain wind pressure.

[0026] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0027] When in use, the entire plug block 251 is pulled out from the hollow receiving seat 24 by the pull block 254, and then the foam to be tested is inserted into the open groove 252. The foam is positioned by squeezing and contacting the inner wall of the open groove 252, and then the plug block 251 is inserted into the hollow receiving seat 24. The air enters the pressure regulating tank 3 through the inflow pipe 11 to form compressed air. After being adjusted by the precision regulating valve 4, the compressed air contacts the foam through the through pipe 23 and enters another through pipe 23 through the foam. The electronic differential pressure gauge 7 can test the air pressure difference between the two through pipes 23 separated by the foam, and the rotor flowmeter 8 can test the air flow rate flowing through the unit area of ​​the foam under a certain wind pressure.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A foam ventilation rate test tool, comprising a base (1), characterized in that: A test box (2) is fixedly mounted above the base (1), a pressure stabilizing tank (3) is also fixed above the base (1), a precision regulating valve (4) is arranged between the pressure stabilizing tank (3) and the test box (2), an air inlet of the precision regulating valve (4) is connected to an air outlet of the pressure stabilizing tank (3) via an air inlet pipe (5), an air outlet of the precision regulating valve (4) is connected to one side of the test box (2) via an air outlet pipe (6), and an electronic differential pressure gauge (7) and a rotor flow meter (8) are also mounted above the base (1).

2. A foam ventilation rate test tool according to claim 1, characterized in that: The test box (2) comprises an outer shell (21) and a cover (22) fixed to the top of the outer shell (21); through tubes (23) are fixed to both sides of the inner wall of the outer shell (21); a hollow receiving seat (24) is fixed between the ends of the two through tubes (23); a foam testing fixture (25) for fixing foam is inserted into the hollow receiving seat (24).

3. A foam ventilation rate testing tool according to claim 2, characterized in that: The foam testing fixture (25) comprises an insert block (251), an open groove (252) for accommodating foam is provided below the insert block (251), round holes (253) communicating with the through pipe (23) are provided on both sides of the insert block (251), and a pull block (254) is fixed above the insert block (251).

4. A foam ventilation rate testing tool according to claim 3, characterized in that: A through slot (9) adapted to the insert block (251) is provided above the sealing cover (22).

5. The foam ventilation rate test tool according to claim 1, characterized in that: A pressure monitoring gauge (10) is installed above the pressure stabilizing tank (3), and the electronic differential pressure gauge (7) is used to test the air pressure difference between the two through pipes (23). One side of the pressure stabilizing tank (3) is connected to an air inlet pipe (11).

6. A foam ventilation rate testing tool according to claim 1, characterized in that: The rotor flowmeter (8) is used to test the air flow rate flowing through the foam per unit area.

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