Automatic formaldehyde content testing workstation

Abstract

The utility model discloses an automatic formaldehyde content testing workstation which comprises a machine table, a liquid injection module, a color developing module, a cooling module, a grabbing module, a liquid suction mechanism and a spectrophotometer, the grabbing module comprises a first grabbing mechanism suspended above the liquid injection module and the color development module, and a second grabbing mechanism suspended above the color development module and the cooling module. A certain volume of color developing agent is injected into the colorimetric tube through the liquid injection module, then the colorimetric tube is moved into the color developing module for color developing, and then the colorimetric tube is moved into the cooling module for cooling. And the liquid suction mechanism injects the cooled analysis liquid in the colorimetric tube into a cuvette of the spectrophotometer, and the absorbance of the sample liquid is measured. According to the utility model, the automatic detection of the formaldehyde content of a specific product is realized, the matching degree of detection data and a sample is improved, the detection data is real and effective, the requirement of detecting the formaldehyde content of the specific product is met, and the detection efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of specific product detection equipment, in particular to an automatic formaldehyde content testing workstation. Background Art

[0002] Formaldehyde is a colorless gas with a pungent odor. It is easily soluble in water, alcohol and ether. Formaldehyde has very active chemical and biological activities. Formaldehyde is toxic to the human body. The symptoms of formaldehyde poisoning mainly include eye burning, tearing, eyelid edema, keratitis, rhinitis, loss of smell, pharyngitis or bronchitis, etc. In severe cases, laryngeal spasm, glottal edema and pulmonary edema may occur. Long-term exposure to low concentrations of formaldehyde may cause headaches, weakness, digestive disorders, visual impairment, palpitations, insomnia and other symptoms.

[0003] However, in some specific products, due to problems with raw materials and production processes, formaldehyde may remain in certain products. As specific products, especially fabrics used for underwear, toy fabrics, daily paper, etc., if there is formaldehyde residue or even formaldehyde exceeds the standard, it is easy to cause formaldehyde poisoning due to its close proximity to the human body, which has a greater impact on people's health.

[0004] At present, the formaldehyde detection of specific products on the market generally adopts manual hydrolysis extraction of samples, and after adding the color developer to the extracted sample liquid, it is placed in a water bath at a certain temperature for a certain period of time for color development, and then the color-developed sample liquid is cooled at room temperature and away from light for a specified time. After the color development is completed, it is placed in a spectrophotometer for testing, and the formaldehyde content value of the sample liquid is calculated according to the absorbance-formaldehyde concentration standard curve. The methods used in the prior art basically require manual operation. When there are many samples to be tested, repeated operations can easily make the test personnel feel tired. In addition, due to the long time required for color development and cooling after color development, manual detection alone can easily cause the problem of incorrect matching between test data and samples, which poses a great hidden danger.

[0005] Therefore, the prior art has defects and needs to be improved. Utility Model Content

[0006] The utility model aims to overcome the deficiencies of the prior art and provide a formaldehyde content automatic testing workstation.

[0007] The technical solution of the utility model is as follows: a formaldehyde content automated testing workstation is provided, comprising: a machine platform, a liquid injection module arranged in the machine platform, a color development module arranged beside the liquid injection module, a cooling module arranged beside the color development module, a grabbing module arranged above the liquid injection module, the color development module and the cooling module, a liquid suction mechanism arranged beside the cooling module, and a spectrophotometer connected to the liquid suction mechanism, a plurality of colorimetric tubes are placed on the liquid injection module, the grabbing module moves the colorimetric tubes to the color development module or the cooling module in sequence, the grabbing module comprises: a first grabbing mechanism suspended above the liquid injection module and the color development module, and a second grabbing mechanism suspended above the color development module and the cooling module, the first grabbing mechanism moves above the liquid injection module and the color development module, and the second grabbing mechanism moves above the color development module and the cooling module.

[0008] Further, the injection module includes: a bottle rack arranged on the machine platform, and a injection tube arranged above the bottle rack, the colorimetric tube is placed on the bottle rack, and the first grasping mechanism includes: a first X-axis moving module, a first Y-axis moving module arranged on the first X-axis moving module, a first Z-axis moving module arranged on the moving end of the first Y-axis moving module, a capping mechanism arranged on the moving end of the first Z-axis moving module, and a bottle body clamping mechanism arranged next to the capping mechanism.

[0009] Furthermore, the injection tube is arranged on the moving end of the first Z-axis moving module.

[0010] Furthermore, the color development module includes: a water bath disposed on the machine platform, an oscillating mechanism disposed in the water bath, and an oscillating bottle rack disposed on the oscillating mechanism.

[0011] Furthermore, the second gripping mechanism includes: a second X-axis moving module, a second Y-axis moving module arranged on the second X-axis moving module, a second Z-axis moving module arranged on the moving end of the second Y-axis moving module, and a pneumatic bottle picking clamp arranged on the moving end of the second Z-axis moving module.

[0012] Furthermore, the liquid suction mechanism includes: a liquid suction Y-axis moving mechanism arranged on the machine platform, a liquid suction X-axis moving mechanism arranged on the liquid suction Y-axis moving mechanism, a liquid suction bracket arranged on the machine platform, a liquid suction Z-axis moving mechanism arranged on the liquid suction bracket, a liquid suction head arranged on the moving end of the liquid suction Z-axis moving mechanism, and a liquid suction pump arranged on the machine platform, the cooling module is arranged on the liquid suction X-axis moving mechanism, the liquid suction Y-axis moving mechanism drives the cooling module to move between the grabbing module and the liquid suction bracket, and the liquid suction pump is respectively connected to the liquid suction head and the spectrophotometer.

[0013] Furthermore, a plurality of shading plates are arranged around the machine.

[0014] Furthermore, the shading plate is arranged beside the color development module and the cooling module.

[0015] Furthermore, a code reader is arranged on the machine platform, and the code reader is arranged beside the first grabbing mechanism.

[0016] By adopting the above scheme, the utility model injects a certain volume of color developer into the colorimetric tube through the liquid injection module, and then moves the colorimetric tube to the color development module through the first gripping mechanism, and oscillates and shakes the mixed liquid in the colorimetric tube and heats it in a water bath, so that the color developer and the extraction sample liquid are fully mixed and the formaldehyde in the extraction sample liquid is developed. After the oscillation and water bath heating are completed, the colorimetric tube is moved to the cooling module through the second gripping mechanism, and cooled at room temperature and away from light for a certain period of time. The liquid suction mechanism injects the cooled analysis liquid in the colorimetric tube into the cuvette of the spectrophotometer, and measures the absorbance of the sample liquid under the wavelength conditions specified in the test standard. The utility model realizes the automation of the formaldehyde content detection of a specific product, improves the matching degree between the detection data and the sample, makes the detection data true and valid, meets the needs of formaldehyde content detection of a specific product, and effectively improves the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a top view of the utility model. DETAILED DESCRIPTION

[0019] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] See also Figure 1 , Figure 2The utility model provides a formaldehyde content automatic testing workstation, comprising: a machine 1, a liquid injection module 2 arranged in the machine 1, a color development module 3 arranged beside the liquid injection module 2, a cooling module 4 arranged beside the color development module 3, a grabbing module 5 arranged above the liquid injection module 2, the color development module 3 and the cooling module 4, a liquid suction mechanism 6 arranged beside the cooling module 4, and a spectrophotometer 7 connected to the liquid suction mechanism 6, the liquid injection module A number of colorimetric tubes are placed on group 2, and the grabbing module 5 moves the colorimetric tubes to the color developing module 3 or the cooling module 4 in sequence. The grabbing module 5 includes: a first grabbing mechanism 51 suspended above the liquid injection module 2 and the color developing module 3, and a second grabbing mechanism 52 suspended above the color developing module 3 and the cooling module 4. The first grabbing mechanism 51 moves above the liquid injection module 2 and the color developing module 3, and the second grabbing mechanism 52 moves above the color developing module 3 and the cooling module 4.

[0021] When testing the formaldehyde content of a sample, the sample is first dissolved and extracted, and then the extract of the sample is extracted and placed in a colorimetric tube, and the colorimetric tube is placed on the injection module 2. A specified volume of a color developer is injected into the colorimetric tube through the injection module 2, and then the colorimetric tube is moved to the color development module 3 through the first grabbing mechanism 51, and the mixed solution in the colorimetric tube is shaken and heated in a water bath so that the color developer and the extracted sample liquid are fully mixed and the extracted sample liquid is colored. After the oscillation and water bath heating are completed, the colorimetric tube is moved to the cooling module through the second grabbing mechanism 52 for room temperature light-proof cooling. The liquid aspiration mechanism 6 injects the cooled analysis liquid in the colorimetric tube into the cuvette of the spectrophotometer 7, and the absorbance of the sample liquid is measured under the condition of a specified wavelength.

[0022] The injection module 2 includes: a bottle rack 21 arranged on the machine 1, and an injection tube 22 arranged above the bottle rack 21, the colorimetric tube is placed on the bottle rack 21, and the first grasping mechanism 51 includes: a first X-axis moving module 511, a first Y-axis moving module 512 arranged on the first X-axis moving module 511, a first Z-axis moving module 513 arranged on the moving end of the first Y-axis moving module 512, a capping mechanism 514 arranged on the moving end of the first Z-axis moving module 513, and a bottle body clamping mechanism arranged beside the capping mechanism 514.

[0023] The colorimetric tube is clamped and fixed by the bottle clamping mechanism, and the bottle cap on the colorimetric tube is screwed out by the cap removal mechanism 514, so as to inject the developer into the colorimetric tube through the injection tube 22, and then the bottle cap is screwed on the colorimetric tube by the cap removal mechanism 514 to ensure the airtightness of the colorimetric tube after the developer is added. In some embodiments, the cap removal mechanism 514 includes a hollow shaft motor and a clamping claw cylinder, and the clamping claw cylinder is driven to rotate by the hollow shaft motor, so that when the clamping claw cylinder clamps the bottle cap of the colorimetric tube, the bottle cap is rotated so that the bottle cap is screwed off the colorimetric tube.

[0024] The injection tube 22 is arranged on the moving end of the first Z-axis moving module 513, so that after the cap removal mechanism 514 removes the bottle cap from the colorimetric tube, the color developer is directly injected into the colorimetric tube through the injection tube 22, thereby improving the overall efficiency and avoiding repeated clamping and fixing operations.

[0025] The color development module 3 includes: a water bath 31 disposed on the machine 1, an oscillating mechanism disposed in the water bath 31, and an oscillating bottle rack 32 disposed on the oscillating mechanism. When the first grabbing mechanism 51 places the colorimetric tube injected with the color developer in the oscillating bottle rack 32, the colorimetric tube is shaken by the oscillating mechanism, and a water bath environment of a certain temperature is provided by the water bath 31, and color development is performed in a dark environment according to the standard prescribed time.

[0026] The second gripping mechanism 52 includes: a second X-axis moving module 521, a second Y-axis moving module 522 disposed on the second X-axis moving module 521, a second Z-axis moving module 523 disposed on the moving end of the second Y-axis moving module 522, and a pneumatic bottle-taking gripper 524 disposed on the moving end of the second Z-axis moving module 523. In some embodiments, the cooling module 4 is a bottle rack, and the colorimetric tube is gripped by activating the bottle-taking gripper 524, and then the colorimetric tube is moved to the bottle rack of the cooling module 4 by the second gripping mechanism 52 for placement, so as to be cooled at room temperature on the cooling module 4.

[0027] The liquid suction mechanism 6 includes: a liquid suction Y-axis moving mechanism 61 arranged on the machine 1, a liquid suction X-axis moving mechanism 62 arranged on the liquid suction Y-axis moving mechanism 61, a liquid suction bracket 63 arranged on the machine 1, a liquid suction Z-axis moving mechanism 64 arranged on the liquid suction bracket 63, a liquid suction head 65 arranged on the moving end of the liquid suction Z-axis moving mechanism 64, and a liquid suction pump arranged on the machine, the cooling module 4 is arranged on the liquid suction X-axis moving mechanism 62, the liquid suction Y-axis moving mechanism 61 drives the cooling module 4 to move between the grabbing module 5 and the liquid suction bracket 63, and the liquid suction pump is respectively connected to the liquid suction head 65 and the spectrophotometer 7. The cooling module 4 is moved to the bottom of the liquid suction bracket 63 by the liquid suction Y-axis moving mechanism 61, and the position of the cooling module 4 is adjusted by the liquid suction X-axis moving mechanism 62, so that the colorimetric tube to be sucked is moved to the bottom of the liquid suction head 65, and the liquid suction head 65 is inserted into the colorimetric tube by the liquid suction Z-axis moving mechanism 64. The liquid suction pump is started, and the sample liquid in the colorimetric tube is sucked by the liquid suction head 65, and the sucked sample liquid is sent to the cuvette in the spectrophotometer 7 for formaldehyde content detection.

[0028] A plurality of shading plates are arranged around the machine 1. The shading plates are arranged beside the color development module 3 and the cooling module 4. By using the shading plates to shield the light in the environment, the color developer in the colorimetric tube can meet the requirement of light-proof color development.

[0029] The machine 1 is provided with a code reader, which is arranged beside the first grabbing mechanism 51. A unique QR code or bar code is pasted on the side wall of each colorimetric tube. When the first grabbing mechanism grabs the colorimetric tube 51, the colorimetric tube is moved to the side of the code reader, and the QR code or bar code on the colorimetric tube is scanned by the code reader, so that the current sample is archived in the control system, and the test result is made to correspond to the file corresponding to the QR code or bar code. In subsequent tests, the data obtained by the spectrophotometer 7 is uploaded to the control system, and a corresponding visual chart is generated in the system to meet the needs of query and archiving.

[0030] In summary, the utility model injects a certain volume of color developer into the colorimetric tube through the liquid injection module, and then moves the colorimetric tube to the color development module through the first gripping mechanism, and oscillates and shakes the mixed liquid in the colorimetric tube and heats it in a water bath, so that the color developer and the extraction sample liquid are fully mixed and the formaldehyde in the extraction sample liquid is developed. After the oscillation and water bath heating are completed, the colorimetric tube is moved to the cooling module through the second gripping mechanism, and cooled at room temperature and away from light for a certain period of time. The liquid aspiration mechanism injects the cooled analysis liquid in the colorimetric tube into the cuvette of the spectrophotometer, and measures the absorbance of the sample liquid under the wavelength conditions specified in the test standard. The utility model realizes the automation of the formaldehyde content detection of a specific product, improves the matching degree between the detection data and the sample, makes the detection data true and valid, meets the needs of formaldehyde content detection of a specific product, and effectively improves the detection efficiency.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A formaldehyde content automated testing workstation, characterized in that: include: A machine, a liquid injection module arranged in the machine, a color development module arranged beside the liquid injection module, a cooling module arranged beside the color development module, a grabbing module arranged above the liquid injection module, the color development module and the cooling module, a liquid suction mechanism arranged beside the cooling module, and a spectrophotometer connected to the liquid suction mechanism, a plurality of colorimetric tubes are placed on the liquid injection module, the grabbing module moves the colorimetric tubes to the color development module or the cooling module in sequence, the grabbing module comprises: a first grabbing mechanism suspended above the liquid injection module and the color development module, and a second grabbing mechanism suspended above the color development module and the cooling module, the first grabbing mechanism moves above the liquid injection module and the color development module, and the second grabbing mechanism moves above the color development module and the cooling module.

2. The formaldehyde content automated testing workstation according to claim 1, characterized in that: The liquid injection module includes: a bottle rack arranged on the machine platform, and a liquid injection tube arranged above the bottle rack, the colorimetric tube is placed on the bottle rack, and the first grasping mechanism includes: a first X-axis moving module, a first Y-axis moving module arranged on the first X-axis moving module, a first Z-axis moving module arranged on the moving end of the first Y-axis moving module, a capping mechanism arranged on the moving end of the first Z-axis moving module, and a bottle body clamping mechanism arranged next to the capping mechanism.

3. The formaldehyde content automated testing workstation according to claim 2, characterized in that: The liquid injection pipe is arranged on the moving end of the first Z-axis moving module.

4. The formaldehyde content automated testing workstation according to claim 1, characterized in that: The color development module includes: a water bath arranged on the machine platform, an oscillating mechanism arranged in the water bath, and an oscillating bottle rack arranged on the oscillating mechanism.

5. The formaldehyde content automated testing workstation according to claim 1, characterized in that: The second gripping mechanism includes: a second X-axis moving module, a second Y-axis moving module arranged on the second X-axis moving module, a second Z-axis moving module arranged on the moving end of the second Y-axis moving module, and a pneumatic bottle picking clamp arranged on the moving end of the second Z-axis moving module.

6. The formaldehyde content automated testing workstation according to claim 1, characterized in that: The liquid suction mechanism includes: a liquid suction Y-axis moving mechanism arranged on the machine platform, a liquid suction X-axis moving mechanism arranged on the liquid suction Y-axis moving mechanism, a liquid suction bracket arranged on the machine platform, a liquid suction Z-axis moving mechanism arranged on the liquid suction bracket, a liquid suction head arranged on the moving end of the liquid suction Z-axis moving mechanism, and a liquid suction pump arranged on the machine platform, the cooling module is arranged on the liquid suction X-axis moving mechanism, the liquid suction Y-axis moving mechanism drives the cooling module to move between the grabbing module and the liquid suction bracket, and the liquid suction pump is respectively connected to the liquid suction head and the spectrophotometer.

7. The formaldehyde content automated testing workstation according to claim 1, characterized in that: A plurality of shading plates are arranged around the machine platform.

8. The formaldehyde content automated testing workstation according to claim 7, characterized in that: The shading plate is arranged beside the color developing module and the cooling module.

9. The formaldehyde content automated testing workstation according to claim 1, characterized in that: A code reader is arranged on the machine platform, and the code reader is arranged beside the first grabbing mechanism.

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