CN201811956U

CN201811956U - Artificial board formaldehyde release tester by catharometry

Info

Publication number: CN201811956U
Application number: CN2010205700125U
Authority: CN
Inventors: 张福基; 高启星; 余志亚
Original assignee: SHANGHAI KELVTE ENVIRONMENTAL TECHNOLOGY Co Ltd
Current assignee: SHANGHAI KELVTE ENVIRONMENTAL TECHNOLOGY Co Ltd
Priority date: 2010-10-21
Filing date: 2010-10-21
Publication date: 2011-04-27
Anticipated expiration: 2020-10-21

Abstract

The utility model discloses an artificial board formaldehyde release tester by catharometry, comprising a test chamber provided with an insulation cover, an air pump and a sampling bottle, wherein the test chamber is externally provided with a water bath type heating jacket, the test chamber is provided with a sampling port, a temperature sensor and an air inlet; an air outlet is sequentially connected with a pressure sensor and a pressure-regulating valve by virtue of pipelines and is connected with a vent valve and a plurality of solenoid valves in parallel, and the solenoid valve is connected with the sampling bottle by virtue of a rubber tube; and the air pump is sequentially connected with a check valve, a particle filter, a formaldehyde filter, a drier and a flowmeter by virtue of pipelines and then is connected with the air inlet of the test chamber. Compared with the prior art, the artificial board formaldehyde release tester in the utility model has the advantages of simple structure, low detection cost and short detection time and is convenient in use, and meanwhile the detected data are accurate, and the comparability is high.

Description

Eudiometry artificial board formaldehyde burst size tester

Technical field

The utility model relates to quality analysis and detection technique field, specifically a kind of eudiometry artificial board formaldehyde burst size tester.

Background technology

The detection of domestic artificial board formaldehyde burst size has four kinds of exsiccator method, perforation extraction, climate box method and eudiometries.The test of exsiccator method is the simplest, and cost is minimum, but owing to the detection surrounding environment being had relatively high expectations and testing factor affecting such as being vulnerable to environmental exact details, container; Perforation extraction more complicated, control requires than higher, and operation is difficult for, and dangerous dosing is bigger; Climate box method test data can illustrate institute's test sample burst size of methanal, but the climate box cost is higher, and sense cycle is long, particularly operation inconvenience concerning general medium-sized and small enterprises; Eudiometry is that sheet material is placed in the cabin body of regulation, and the burst size of methanal of test sample is easy and simple to handle under uniform temperature, humidity, pressure and the air velocity, and cost is moderate, and most important is that sense cycle is short, and it is low to detect cost.

At present, the formaldehyde gas analyser exists temperature on the China market, air pressure is unstable and the control defective, the interior temperature of cabin body that can not satisfy " burst size of methanal is measured eudiometry in GB/T 23825-2009 wood-based plate and the goods thereof " and ISO/FDIS-3 2008 " artificial board formaldehyde burst size is measured the 3rd eudiometry " is even, pressure stability, the requirement that background values content is low and control adopts the PID interlock to control.

Summary of the invention

The purpose of this utility model is a burst size of methanal tester in a kind of wood-based plate that designs at the deficiencies in the prior art and the goods thereof, and its adopts temperature, humidity and pressure in control detection cabin, studies the Changing Pattern of artificial board formaldehyde burst size.The data that detect are accurate, have certain comparability, and detection time is shorter, detect the low characteristics of cost.

The concrete technical scheme that realizes the utility model purpose is: a kind of eudiometry artificial board formaldehyde burst size determinator, comprise the test chamber, source of the gas, the sampling bottle that are provided with muff, be characterized in that test chamber is provided with the water-bath type heating jacket outward, muff is arranged on outside the heating jacket, and test chamber is provided with gas outlet, A temperature sensor and air intake opening; The gas outlet is connected with several solenoid valves with the vent valve of parallel connection after connecting pressure transducer, pressure-regulating valve successively by pipeline, and solenoid valve is connected with sampling bottle by sebific duct; Source of the gas is connected with the air intake opening of test chamber after connecting retaining valve, particulate filter, formaldehyde filtrator, exsiccator and flowmeter successively by pipeline; Heating jacket is connected with the water tank of well heater, B temperature sensor by circulation pipe, and circulation pipe is provided with water circulating pump; Air pump, retaining valve, well heater, B temperature sensor, A temperature sensor, pressure transducer, pressure-regulating valve, vent valve are connected controller with solenoid valve and realize programming Control by PID.

The utility model compared with prior art has simple in structure, and is easy to use, detect the advantage that cost is low, the time is short, and the data that detect is accurate, the comparability height.

Description of drawings

Fig. 1 is the utility model structural representation.

Embodiment

Consult accompanying drawing 1, the utility model comprises: the test chamber 10, source of the gas 1, the sampling bottle 30 that are provided with muff 7, be provided with water-bath type heating jacket 8 outside the test chamber 10, muff 7 is arranged on outside the heating jacket 8, and test chamber 10 is provided with gas outlet 31, A temperature sensor 14 and air intake opening 19; Gas outlet 31 is connected with four solenoid valves 25 with the vent valve 24 of parallel connection after connecting pressure transducer 20, pressure-regulating valve 21 successively by pipeline, and solenoid valve 25 is connected with sampling bottle 30 by sebific duct 29; Source of the gas 1 connects retaining valve 2, particulate filter 3, formaldehyde filtrator 4, exsiccator 5 and flowmeter 6 backs successively by pipeline and is connected with the air intake opening 19 of test chamber 10; Heating jacket 8 is connected with the water tank 13 of well heater 16, B temperature sensor 17 by circulation pipe 12, and circulating line 12 is provided with water circulating pump 15; Source of the gas 1, retaining valve 2, well heater 16, B temperature sensor 17, A temperature sensor 14, pressure transducer 20, pressure-regulating valve 21, vent valve 24 and solenoid valve 25 are connected controller 22 and realize programming Control by PID.

Below will be further elaborated the utility model by specific embodiment:

Embodiment 1

Prepare before a, the test

, sample and cut sample according to the ISO16999 standard, with wood-based plate trimming 50mm behind the sample cool to room temperature, produce 3 by the requirement of 400mmx50mmx gauge, be sealed in room temperature preservation in the vinyl bag immediately.

, the sampling bottle 30 that will install formaldehyde absorbent puts on the sampling support 23, sampling bottle 30 usefulness do not contain the rubber tube 29 connection solenoid valves 25 of formaldehyde.

, open the power supply of PLC controller 22, click that environment temperatures are set to 60 ℃ in touch-screen start key and the test chamber 10; Pressure is adjusted to 1000 ~ 1200 pa; Humidity is lower than 3%RH; This moment, water tank 13 interior well heater 16 and water circulating pumps 15 started, start source of the gas 1 and vent valve 24 then, regulate retaining valve 2 and make flowmeter 6 set flow, temperature sensor 14 and pressure transducer 20 pass to controller 22 with the environmental data in the test chamber 10 and realize programming Control by PID.Well heater 16 quits work when the temperature in the test chamber 10 reaches design temperature, and water circulating pump 15 continues operation; Well heater 16 work when the temperature in the test chamber 10 is lower than design temperature.Be provided with heating protecting device and water level gauge in the water tank 13, when the water temperature in the water tank 13 surpassed 75 ℃, system alarm, well heater 16 stopped heating.The pressure stability that adjusting air pressure makes test chamber 10 is in set pressure, and system can report to the police when test chamber 10 internal gas pressures are higher than setting value, and regulate air pressure valve and get final product this moment.

B, mensuration

Temperature and pressure stability are after a period of time in the cabin 10 to be tested, opening the wood-based plate sample of preparing before hatch door 11 will be tested does not wrap on the support of putting into test chamber 10 in the limit with not containing the formaldehyde aluminium-foil paper, close hatch door 11 then, this moment, test chamber 10 interior temperature can descend to some extent, the utility model according to requirement operation a period of time of setting after, after the temperature of test chamber 10 and air pressure settle out once more, begin to measure.

Click touch-screen up-sampling pattern and set sampling flow process and sampling time, close vent valve 24 then, open first solenoid valve 25 simultaneously, the sampling time is set at 1 hour, and this moment, other three solenoid valves 25 cut out.Automatically close run to time of setting when first solenoid valve 25 after, open second solenoid valve 25 simultaneously, the sampling time is set at 1 hour; Automatically close run to time of setting when second solenoid valve 25 after, open the 3rd solenoid valve 25 simultaneously, the sampling time is set at 1 hour; Automatically close run to time of setting when the 3rd solenoid valve 25 after, open the 4th solenoid valve 25 simultaneously, the sampling time is set at 1 hour; Automatically close run to time of setting when the 4th solenoid valve 25 after, open vent valve 24 simultaneously.

Test sample finishes sampling pattern and the closing device power supply on the back click touch-screen, takes off absorption bottle 30 then and carries out the content of formaldehyde analysis.

C, technological operation index:

Working temperature: 60 ± 0.5 ℃;

Working relative humidity: during≤3%RH(working temperature);

Malleation keeps: 1000～1200Pa;

Flow range: 2～120L/h;

Air inlet background values :≤0.006mg/m3;

Operating room's size: L=555mm, D=96mm;

Volume: 4017ml;

Power: 1.2kw;

Power supply: 220V 50Hz 1KW.

Claims

1. eudiometry artificial board formaldehyde burst size tester, comprise the test chamber (10), source of the gas (1), the sampling bottle (30) that are provided with muff (7), it is characterized in that the outer water-bath type heating jacket (8) that is provided with of test chamber (10), muff (7) is arranged on outside the heating jacket (8), and test chamber (10) is provided with gas outlet (31), A temperature sensor (14) and air intake opening (19); Gas outlet (31) is connected with several solenoid valves (25) with the vent valve (24) of parallel connection after connecting pressure transducer (20), pressure-regulating valve (21) successively by pipeline, and solenoid valve (25) is connected with sampling bottle (30) by sebific duct (29); Source of the gas (1) connects retaining valve (2), particulate filter (3), formaldehyde filtrator (4), exsiccator (5) and flowmeter (6) back successively by pipeline and is connected with the air intake opening (19) of test chamber (10); Heating jacket (8) is connected with the water tank (13) of well heater (16), B temperature sensor (17) by circulation pipe (12), and circulation pipe (12) is provided with water circulating pump (15); Source of the gas (1), retaining valve (2), well heater (16), B temperature sensor (17), A temperature sensor (14), pressure transducer (20), pressure-regulating valve (21), vent valve (24) and solenoid valve (25) are connected controller (22) and realize programming Control by PID.