Automatic formaldehyde detection equipment and formaldehyde detection method

文档序号:1597967 发布日期:2020-01-07 浏览:13次 中文

阅读说明:本技术 一种自动化式甲醛检测设备及甲醛检测方法 (Automatic formaldehyde detection equipment and formaldehyde detection method ) 是由 邱中原 毕冬宾 杜乃红 丁景策 霍丽洁 刘春玲 莫姣霞 于 2019-10-11 设计创作,主要内容包括:本发明公开一种自动化式甲醛检测设备,包括第一撑架,第一撑架的上端设置有检测保护壳,检测保护壳内设置有支撑定位机构,支撑定位机构上连接有抽样系统、加药系统、水浴系统和总控制器;抽样系统包括大气采样器、干燥瓶和甲醛吸收瓶,甲醛吸收瓶的出气管与干燥瓶相连;甲醛吸收瓶的下端连有第一出液管;加药系统包括第一加药机构、第二加药机构和混药机构,混药机构包括第一混合瓶、第一混药溢流瓶、第一检测瓶和第一样本瓶,水浴系统包括传送机构和恒温水浴锅,传送机构连接在恒温水浴锅侧方的支撑定位机构上,第一检测瓶和第一样本瓶与传送机构相连。本发明还公开一种甲醛检测方法,该方法可更高效准确的检测气候箱内的甲醛含量。(The invention discloses automatic formaldehyde detection equipment which comprises a first support frame, wherein the upper end of the first support frame is provided with a detection protective shell, a supporting and positioning mechanism is arranged in the detection protective shell, and a sampling system, a dosing system, a water bath system and a master controller are connected onto the supporting and positioning mechanism; the sampling system comprises an atmospheric sampler, a drying bottle and a formaldehyde absorption bottle, wherein an air outlet pipe of the formaldehyde absorption bottle is connected with the drying bottle; the lower end of the formaldehyde absorption bottle is connected with a first liquid outlet pipe; the medicine system includes that first adds medicine mechanism, second add medicine mechanism and mix the medicine mechanism, mixes medicine mechanism and includes first mixing flask, first medicine overflow bottle, first detection bottle and the first sample bottle of mixing, and the water bath system includes transport mechanism and constant temperature water bath, and transport mechanism connects on the support positioning mechanism of constant temperature water bath side, and first detection bottle and first sample bottle link to each other with transport mechanism. The invention also discloses a formaldehyde detection method, which can detect the formaldehyde content in the climate box more efficiently and accurately.)

1. An automatic formaldehyde detection device is characterized by comprising a first support frame, wherein the upper end of the first support frame is provided with a detection protective shell, a supporting and positioning mechanism is arranged in the detection protective shell, and a sampling system, a dosing system, a water bath system and a master controller are connected to the supporting and positioning mechanism; the sampling system comprises an atmosphere sampler, a drying bottle and a formaldehyde absorption bottle, wherein an air inlet pipe of the formaldehyde absorption bottle can be connected with an air outlet pipe on the atmosphere sampler through a first air inlet hose, and the air outlet pipe of the formaldehyde absorption bottle is connected with the drying bottle; the lower end of the formaldehyde absorption bottle is connected with a first liquid outlet pipe, and a first electromagnetic valve is arranged on the first liquid outlet pipe;

the medicine feeding system comprises a first medicine feeding mechanism, a second medicine feeding mechanism and a medicine mixing mechanism, the medicine mixing mechanism comprises a first mixing bottle, a first medicine mixing overflow bottle, a first detection bottle and a first sample bottle, the liquid outlet end of a first liquid outlet pipe is connected with the first mixing bottle, the lower end of the first mixing bottle is communicated with the first medicine mixing overflow bottle through a second liquid outlet pipe, and a second electromagnetic valve is arranged on the second liquid outlet pipe;

the upper side end of the first medicine mixing overflow bottle is connected with a medicine mixing overflow pipe, the lower end of the first medicine mixing overflow bottle is communicated with the first detection bottle through a third liquid outlet pipe, and the third liquid outlet pipe is connected with a third electromagnetic valve;

the first dosing mechanism is communicated with the third liquid outlet pipe through a fourth liquid outlet pipe, and the upper part of the fourth liquid outlet pipe is connected with a fourth electromagnetic valve; the second dosing mechanism is connected with the first sample bottle through a fifth liquid outlet pipe, and the upper part of the fifth liquid outlet pipe is connected with a fifth electromagnetic valve;

the water bath system comprises a conveying mechanism and a constant-temperature water bath kettle, the constant-temperature water bath kettle is connected in the bottom of the detection protective shell, the conveying mechanism is connected to a supporting and positioning mechanism on the side of the constant-temperature water bath kettle, and a first detection bottle and a first sample bottle are connected with the conveying mechanism through a first bottle body supporting rod.

2. The automatic formaldehyde detecting device according to claim 1, wherein the first support frame is a square frame, the first support frame comprises a plurality of first support legs and a first reinforcing beam connected between the first support legs, the first reinforcing beam is provided with a bottle storage rack, and the lower ends of the first support legs are connected with first roller assemblies;

the upper end of first strut is provided with first casing limiting plate, detects the protective housing joint and links firmly with first strut through the bolt between two first limiting plates.

3. The automatic formaldehyde detecting device according to claim 1, wherein the detecting protective housing comprises a first housing, and a first door body is connected to a front opening end of the first housing;

the supporting and positioning mechanism comprises a first upper left positioning frame, a first upper right positioning frame, a first middle positioning frame and a first lower right positioning frame, wherein the first upper left positioning frame, the first upper right positioning frame, the first middle positioning frame and the first lower right positioning frame are respectively arranged in the upper left portion, the upper right portion, the middle portion and the lower right portion of the first shell.

4. The automated formaldehyde detecting apparatus according to claim 3, wherein the atmospheric sampling device, the drying bottle and the formaldehyde absorbing bottle are connected to the first upper left positioning frame;

the first dosing mechanism and the second dosing mechanism are connected to the first upper right positioning frame; the first mixing bottle and the first medicine mixing overflow bottle are connected to the first middle positioning frame; the conveying mechanism is connected to the first lower right positioning frame.

5. The automated formaldehyde detecting apparatus according to claim 1, wherein the drying bottle comprises a lower drying bottle body and an upper drying bottle plug connected to the lower drying bottle body, and the air outlet pipe of the formaldehyde absorbing bottle passes through the upper drying bottle plug; a sampler air inlet pipe on the atmospheric sampler is connected with the drying bottle;

the formaldehyde absorption bottles are communicated through a first formaldehyde vent pipe and comprise a lower formaldehyde bottle body and an upper formaldehyde bottle plug connected to the lower formaldehyde bottle body; the first feed liquor tip of first drain pipe has two, is connected with a first solenoid valve on every first feed liquor tip, and first solenoid valve passes through the circuit and is connected with total controller.

6. The automatic formaldehyde detecting equipment according to claim 1, wherein the first dosing mechanism comprises a first dosing bottle and a third dosing bottle, and the second dosing mechanism comprises a second dosing bottle, a fourth dosing positioning bottle and a fifth pure water dosing bottle;

the first dosing quantitative bottle, the second dosing quantitative bottle, the third dosing quantitative bottle, the fourth dosing positioning bottle and the fifth pure water quantitative bottle are vertically arranged from left to right in sequence; the heads of the first dosing quantitative bottle, the second dosing quantitative bottle, the third dosing quantitative bottle, the fourth dosing positioning bottle and the fifth pure water quantitative bottle all penetrate through the upper end face of the detection protective shell.

7. The automatic formaldehyde detecting device according to claim 5, wherein a first overflow receiving cup is disposed on the detecting protective housing between the first dosing bottle and the second dosing bottle, and a second overflow receiving cup is disposed on the detecting protective housing between the third dosing bottle and the fourth dosing positioning bottle; a third overflow receiving cup is arranged on the detection protective shell at the side end of the fifth pure water quantifying bottle;

the first dosing quantitative bottle, the second dosing quantitative bottle, the third dosing quantitative bottle, the fourth dosing positioning bottle and the fifth pure water quantitative bottle are all glass quantitative bottles, the glass quantitative bottles are in a circular tube shape, and the upper parts of the glass quantitative bottles are connected with a first dosing overflow pipe;

there are two fourth solenoid valves and three fifth solenoid valves.

8. The automatic formaldehyde detection device according to claim 1, wherein the first detection bottle and the first sample bottle are glass flasks, and bottle stoppers are arranged at bottle mouths of the first detection bottle and the first sample bottle; the upper part of the first detection bottle is sleeved with a first rubber sleeve, and a first positioning frame is connected outside the first rubber sleeve;

the upper part of the first sample bottle is sleeved with a second rubber sleeve, and a second positioning frame is sleeved outside the second rubber sleeve; the two ends of the lower part of the first bottle body supporting rod are respectively connected with the first positioning frame and the second positioning frame.

9. The automatic formaldehyde detection device according to claim 8, wherein the conveying mechanism comprises a first vertical linear module, the first vertical linear module is connected with the detection protective shell through a first module positioning frame, a first transverse linear module is transversely connected to a first vertical sliding block in the first vertical linear module, and the first transverse linear module can be driven by the first vertical linear module to move up and down;

the first bottle body supporting rod is in an inverted T-shaped frame shape, and a first transverse sliding block in the first transverse linear module is connected with the upper end part of the first bottle body supporting rod;

the constant temperature water bath is connected with the detection protective housing through the pot body support of lower extreme, and first vertical straight line module is located the right-hand of constant temperature water bath, and first horizontal straight line module is located the top of constant temperature water bath.

10. The formaldehyde detection method is characterized in that the automatic formaldehyde detection equipment of any one of claims 1 to 9 is adopted, and the method specifically comprises the following steps:

firstly, putting a sample needing to detect formaldehyde into an external climate box, when air in the climate box is tested, communicating an exhaust pipe of an atmosphere sampler with the climate box, and then connecting an air inlet pipe of a formaldehyde absorption bottle with an air outlet pipe on the atmosphere sampler by using a first air inlet hose;

step two, respectively adding 25mL of absorption liquid into two formaldehyde absorption bottles; respectively adding an acetylacetone solution, an ammonium acetate solution and pure water from left to right in a first dosing quantitative bottle, a second dosing quantitative bottle, a third dosing quantitative bottle, a fourth dosing positioning bottle and a fifth pure water quantitative bottle;

step three, opening a main controller, sending an instruction by the main controller to open the air sampler, controlling the air pumping speed to be 2L/min, and controlling the air pumping time to be 1 h; meanwhile, the master controller controls the constant-temperature water bath to be opened, and the water in the bath is heated until the temperature required by the test is reached;

step four, after 1 hour, finishing air extraction, enabling the water temperature in the constant-temperature water bath to reach the temperature required by the test, sending an instruction by the controller, and closing the air sampler; simultaneously opening a first electromagnetic valve, and enabling absorption liquid to flow into a first mixing bottle from two formaldehyde absorption bottles;

after the absorption liquid is mixed, the controller sends out an instruction, the first electromagnetic valve is closed, the second electromagnetic valve is opened, the mixed absorption liquid flows to a 10mL first medicine mixing overflow bottle, and redundant absorption liquid is discharged through the medicine mixing overflow pipe;

step five, in the dosing process, the controller sends out an instruction and closes the second electromagnetic valve; then opening a third electromagnetic valve and a fifth electromagnetic valve for controlling a fifth pure water quantitative bottle at a time interval of 30 s; the absorption liquid and the pure water respectively flow into the first detection bottle and the first sample bottle;

and step six, the controller sends out an instruction, the third electromagnetic valve is closed, the fourth electromagnetic valve and the other two fifth electromagnetic valves are opened, and the first detection bottle and the first sample bottle are respectively added with 10mL of acetylacetone solution and 10mL of ammonium acetate solution.

Step seven, in the water bath process, after the medicines are added into the first detection bottle and the first sample bottle, the controller sends out an instruction, and all the fourth electromagnetic valves and all the fifth electromagnetic valves are closed;

simultaneously, the first detection bottle and the first sample bottle enter a constant-temperature water bath kettle which is heated to 60 ℃ through a conveying mechanism; after the first detection bottle and the first sample bottle are kept in the constant-temperature water bath for 10min, the volumetric flask is moved out of the constant-temperature water bath through the conveying mechanism;

step eight, closing the first door body, storing the liquid in the first detection bottle and the first sample bottle for 1h in a dark place, and then sending out an alarm by the controller to remind a tester to take out the sample to measure absorbance.

Technical Field

The invention relates to the field of engineering detection, in particular to automatic formaldehyde detection equipment and a formaldehyde detection method.

Background

The current test method for determining formaldehyde release limit in artificial boards and products thereof in China comprises the following steps: climatic chamber method, gas analysis method, dryer method, perforated extraction method. Due to the change of a new standard, the formaldehyde release limit in the artificial board of the interior decoration and finishing material and the product thereof GB 18580-2017 is implemented in 2018, 05 and 01, and the new standard cancels a 40L dryer method and limit values, (9-11) the limit values of the L dryer method and the perforation extraction method; (9-11) the L dryer method and the perforated extraction method are only used for production quality control. The modification only can detect the formaldehyde emission in the artificial board and the product thereof by using a climate box method for a third-party detection mechanism, so that the detection task of the climate box method is suddenly increased, and on one hand, the detection is caused by single detection method; on the other hand, the detection integration equipment is not available in the market, so that the working efficiency is low.

The method for measuring the formaldehyde release limit in the artificial board and the products thereof by the climate box method mainly comprises five steps: firstly, placing a detection sample into a climate box → extracting gas in the box to dissolve in the absorption liquid → adding a reaction reagent into the absorption liquid → secondly, carrying out constant-temperature water bath on the absorption liquid → thirdly, utilizing a spectrophotometer to measure absorbance. The method has complicated measuring steps, so that the working efficiency is low. All types of climate boxes and spectrophotometers in the market can meet the test requirements at present, but all the steps are relatively dispersed and are operated and monitored by workers, so that the automation degree is too low, and particularly the third step and the fourth step are carried out. The invention integrates the steps two to four, realizes automation, improves the working efficiency and reduces the influence of human factors on the test result.

Disclosure of Invention

The invention aims to provide automatic formaldehyde detection equipment which can detect formaldehyde more efficiently and accurately and is more convenient to use.

In order to achieve the purpose, the invention adopts the technical scheme that:

an automatic formaldehyde detection device comprises a first support frame, wherein a detection protective shell is arranged at the upper end of the first support frame, a supporting and positioning mechanism is arranged in the detection protective shell, and a sampling system, a dosing system, a water bath system and a master controller are connected to the supporting and positioning mechanism; the sampling system comprises an atmosphere sampler, a drying bottle and a formaldehyde absorption bottle, wherein an air inlet pipe of the formaldehyde absorption bottle can be connected with an air outlet pipe on the atmosphere sampler through a first air inlet hose, and the air outlet pipe of the formaldehyde absorption bottle is connected with the drying bottle; the lower end of the formaldehyde absorption bottle is connected with a first liquid outlet pipe, and a first electromagnetic valve is arranged on the first liquid outlet pipe;

the medicine feeding system comprises a first medicine feeding mechanism, a second medicine feeding mechanism and a medicine mixing mechanism, the medicine mixing mechanism comprises a first mixing bottle, a first medicine mixing overflow bottle, a first detection bottle and a first sample bottle, the liquid outlet end of a first liquid outlet pipe is connected with the first mixing bottle, the lower end of the first mixing bottle is communicated with the first medicine mixing overflow bottle through a second liquid outlet pipe, and a second electromagnetic valve is arranged on the second liquid outlet pipe;

the upper side end of the first medicine mixing overflow bottle is connected with a medicine mixing overflow pipe, the lower end of the first medicine mixing overflow bottle is communicated with the first detection bottle through a third liquid outlet pipe, and the third liquid outlet pipe is connected with a third electromagnetic valve;

the first dosing mechanism is communicated with the third liquid outlet pipe through a fourth liquid outlet pipe, and the upper part of the fourth liquid outlet pipe is connected with a fourth electromagnetic valve; the second dosing mechanism is connected with the first sample bottle through a fifth liquid outlet pipe, and the upper part of the fifth liquid outlet pipe is connected with a fifth electromagnetic valve;

the water bath system comprises a conveying mechanism and a constant-temperature water bath kettle, the constant-temperature water bath kettle is connected in the bottom of the detection protective shell, the conveying mechanism is connected to a supporting and positioning mechanism on the side of the constant-temperature water bath kettle, and a first detection bottle and a first sample bottle are connected with the conveying mechanism through a first bottle body supporting rod.

Preferably, the first support frame is in a square frame shape and comprises a plurality of first support legs and a first reinforcing beam connected between the first support legs, the first reinforcing beam is provided with a bottle storage rack, and the lower ends of the first support legs are connected with a first roller assembly;

the upper end of first strut is provided with first casing limiting plate, detects the protective housing joint and links firmly with first strut through the bolt between two first limiting plates.

Preferably, the detection protective shell comprises a first shell, and a first door body is connected to the front opening end of the first shell;

the supporting and positioning mechanism comprises a first upper left positioning frame, a first upper right positioning frame, a first middle positioning frame and a first lower right positioning frame, wherein the first upper left positioning frame, the first upper right positioning frame, the first middle positioning frame and the first lower right positioning frame are respectively arranged in the upper left portion, the upper right portion, the middle portion and the lower right portion of the first shell.

Preferably, the atmosphere sampler, the drying bottle and the formaldehyde absorption bottle are connected to the first upper left positioning frame;

the first dosing mechanism and the second dosing mechanism are connected to the first upper right positioning frame; the first mixing bottle and the first medicine mixing overflow bottle are connected to the first middle positioning frame; the conveying mechanism is connected to the first lower right positioning frame.

Preferably, the drying bottle comprises a lower drying bottle body and an upper drying bottle plug connected with the lower drying bottle body, and the air outlet pipe of the formaldehyde absorption bottle penetrates through the upper drying bottle plug; a sampler air inlet pipe on the atmospheric sampler is connected with the drying bottle;

the formaldehyde absorption bottles are communicated through a first formaldehyde vent pipe and comprise a lower formaldehyde bottle body and an upper formaldehyde bottle plug connected to the lower formaldehyde bottle body; the first feed liquor tip of first drain pipe has two, is connected with a first solenoid valve on every first feed liquor tip, and first solenoid valve passes through the circuit and is connected with total controller.

Preferably, the first dosing mechanism comprises a first dosing quantitative bottle and a third dosing quantitative bottle, and the second dosing mechanism comprises a second dosing quantitative bottle, a fourth dosing positioning bottle and a fifth pure water quantitative bottle;

the first dosing quantitative bottle, the second dosing quantitative bottle, the third dosing quantitative bottle, the fourth dosing positioning bottle and the fifth pure water quantitative bottle are vertically arranged from left to right in sequence; the heads of the first dosing quantitative bottle, the second dosing quantitative bottle, the third dosing quantitative bottle, the fourth dosing positioning bottle and the fifth pure water quantitative bottle all penetrate through the upper end face of the detection protective shell.

Preferably, a first overflow receiving cup is arranged on the detection protective shell between the first dosing quantitative bottle and the second dosing quantitative bottle, and a second overflow receiving cup is arranged on the detection protective shell between the third dosing quantitative bottle and the fourth dosing positioning bottle; a third overflow receiving cup is arranged on the detection protective shell at the side end of the fifth pure water quantifying bottle;

the first dosing quantitative bottle, the second dosing quantitative bottle, the third dosing quantitative bottle, the fourth dosing positioning bottle and the fifth pure water quantitative bottle are all glass quantitative bottles, the glass quantitative bottles are in a circular tube shape, and the upper parts of the glass quantitative bottles are connected with a first dosing overflow pipe;

there are two fourth solenoid valves and three fifth solenoid valves.

Preferably, the first detection bottle and the first sample bottle are both glass flasks, and bottle stoppers are arranged at bottle mouths of the first detection bottle and the first sample bottle; the upper part of the first detection bottle is sleeved with a first rubber sleeve, and a first positioning frame is connected outside the first rubber sleeve;

the upper part of the first sample bottle is sleeved with a second rubber sleeve, and a second positioning frame is sleeved outside the second rubber sleeve; the two ends of the lower part of the first bottle body supporting rod are respectively connected with the first positioning frame and the second positioning frame.

Preferably, the conveying mechanism comprises a first vertical straight line module, the first vertical straight line module is connected with the detection protective shell through a first module positioning frame, a first transverse straight line module is transversely connected to a first vertical sliding block in the first vertical straight line module, and the first transverse straight line module can be driven by the first vertical straight line module to move up and down;

the first bottle body supporting rod is in an inverted T-shaped frame shape, and a first transverse sliding block in the first transverse linear module is connected with the upper end part of the first bottle body supporting rod;

the constant temperature water bath is connected with the detection protective housing through the pot body support of lower extreme, and first vertical straight line module is located the right-hand of constant temperature water bath, and first horizontal straight line module is located the top of constant temperature water bath.

The invention also provides a formaldehyde detection method, which can detect the formaldehyde content in the climate box more efficiently and accurately.

In order to achieve the purpose, the invention adopts the technical scheme that:

a formaldehyde detection method adopts the automatic formaldehyde detection equipment, and specifically comprises the following steps:

firstly, putting a sample needing to detect formaldehyde into an external climate box, when air in the climate box is tested, communicating an exhaust pipe of an atmosphere sampler with the climate box, and then connecting an air inlet pipe of a formaldehyde absorption bottle with an air outlet pipe on the atmosphere sampler by using a first air inlet hose;

step two, respectively adding 25mL of absorption liquid into two formaldehyde absorption bottles; respectively adding an acetylacetone solution, an ammonium acetate solution and pure water from left to right in a first dosing quantitative bottle, a second dosing quantitative bottle, a third dosing quantitative bottle, a fourth dosing positioning bottle and a fifth pure water quantitative bottle;

step three, opening a main controller, sending an instruction by the main controller to open the air sampler, controlling the air pumping speed to be 2L/min, and controlling the air pumping time to be 1 h; meanwhile, the master controller controls the constant-temperature water bath to be opened, and the water in the bath is heated until the temperature required by the test is reached;

step four, after 1 hour, finishing air extraction, enabling the water temperature in the constant-temperature water bath to reach the temperature required by the test, sending an instruction by the controller, and closing the air sampler; simultaneously opening a first electromagnetic valve, and enabling absorption liquid to flow into a first mixing bottle from two formaldehyde absorption bottles;

after the absorption liquid is mixed, the controller sends out an instruction, the first electromagnetic valve is closed, the second electromagnetic valve is opened, the mixed absorption liquid flows to a 10mL first medicine mixing overflow bottle, and redundant absorption liquid is discharged through the medicine mixing overflow pipe;

step five, in the dosing process, the controller sends out an instruction and closes the second electromagnetic valve; then opening a third electromagnetic valve and a fifth electromagnetic valve for controlling a fifth pure water quantitative bottle at a time interval of 30 s; the absorption liquid and the pure water respectively flow into the first detection bottle and the first sample bottle;

and step six, the controller sends out an instruction, the third electromagnetic valve is closed, the fourth electromagnetic valve and the other two fifth electromagnetic valves are opened, and the first detection bottle and the first sample bottle are respectively added with 10mL of acetylacetone solution and 10mL of ammonium acetate solution.

Step seven, in the water bath process, after the medicines are added into the first detection bottle and the first sample bottle, the controller sends out an instruction, and all the fourth electromagnetic valves and all the fifth electromagnetic valves are closed;

simultaneously, the first detection bottle and the first sample bottle enter a constant-temperature water bath kettle which is heated to 60 ℃ through a conveying mechanism; after the first detection bottle and the first sample bottle are kept in the constant-temperature water bath for 10min, the volumetric flask is moved out of the constant-temperature water bath through the conveying mechanism;

step eight, closing the first door body, storing the liquid in the first detection bottle and the first sample bottle for 1h in a dark place, and then sending out an alarm by the controller to remind a tester to take out the sample to measure absorbance.

The invention has the beneficial effects that:

the formaldehyde emission in the artificial board and the artificial board product is strictly controlled by using a climatic box method, the formaldehyde content in the indoor environment is prevented from exceeding the standard, and the physical and psychological health of people is guaranteed. A novel test device is manufactured, and the weather box method is more mature. The test steps of the climate box method are automated, labor force is liberated, and working efficiency is improved. The influence of human factors on the test result is reduced.

Drawings

In order to clearly illustrate the embodiments or technical solutions of the present invention in the prior art, the drawings used in the description of the embodiments or prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of the overall structure of an automated formaldehyde detection apparatus.

Fig. 2 is a schematic view of a connection structure of the supporting and positioning mechanism and the detection protective shell.

Fig. 3 is a schematic view of the connection structure of the sampling system and the detection protective shell.

Fig. 4 is a schematic view of a connection structure of the transmission mechanism and the detection protective housing.

Detailed Description

The invention provides an automatic formaldehyde detection device and a formaldehyde detection method, and the invention is further described in detail below in order to make the purpose, technical scheme and effect of the invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The invention is described in detail below with reference to the accompanying drawings:

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