Full-automatic formaldehyde analysis equipment based on textile fabrics

Abstract

The invention relates to the technical field of textile formaldehyde analysis, in particular to textile-based full-automatic formaldehyde analysis equipment which comprises a detection module, the detection module comprises a reagent adding and sucking assembly, the reagent adding and sucking assembly comprises a first three-axis sliding table module and two Z2-axis bottle plug grabbing manipulators, and the Z2-axis bottle plug grabbing manipulators are arranged on the first three-axis sliding table module. The two Z2-axis bottle plug grabbing manipulators are each provided with a Z1-axis end double-needle head. According to the full-automatic textile formaldehyde analyzer, the whole analysis process is from sample preparation, reagent addition, solution transfer, chromogenic reagent addition, sample treatment to final analysis, automatic operation is basically achieved, manual intervention is reduced, the analysis efficiency and accuracy are improved, and in the injection process, the detection accuracy is greatly improved. The effect of manually shaking the sample bottle is simulated through rotary motion, so that liquid in the bottle can be instantly and preliminarily mixed after a color developing agent is added, the subsequent mixing waiting time is shortened, or water bath heating is more uniform, and the detection efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of formaldehyde analysis technology for textiles, and in particular to a fully automated formaldehyde analysis device based on textiles. Background Technology

[0002] Formaldehyde, a colorless gas, is difficult to detect at low concentrations and is easily masked by other odors, such as those found in air fresheners. At higher concentrations, it has a strong, pungent, and suffocating odor and irritates the eyes and nose. Formaldehyde is currently considered a seriously harmful toxic gas to human health and is frequently found in substandard textiles. Long-term exposure to textiles with high formaldehyde concentrations may cause dizziness, headaches, tearing, nausea, vomiting, coughing, chest tightness, and even leukemia, seriously endangering human health.

[0003] Therefore, a large number of textiles in daily life need to undergo formaldehyde analysis. However, the efficiency of formaldehyde detection is difficult to meet the ever-increasing demand for textile testing. Formaldehyde analysis of textiles requires pretreatment before analysis by the analyzer. The sample pretreatment process is relatively cumbersome, requires high professional skills from personnel, many chemical reagents used in the pretreatment process are too dangerous, and the analysis efficiency is too low. The high staff turnover rate also greatly affects production efficiency.

[0004] A search revealed a patent document with publication number CN215866550U that discloses a fully automated formaldehyde analyzer. However, this application has a limited sample processing capacity, requiring each test to involve separate sample placement, heating, testing, and waste liquid treatment, making batch processing impossible and resulting in a long overall testing time. Furthermore, the liquid in the sample bottle cannot be mixed in time after the addition of the colorimetric reagent, leading to increased waiting time for mixing. Therefore, a fully automated formaldehyde analysis device based on textiles is proposed to solve the aforementioned problems. Summary of the Invention

[0005] In order to address the shortcomings of existing technologies and enable fully automated formaldehyde content detection in textiles, this application provides a fully automated formaldehyde analysis device based on textiles, which has advantages such as good detection effect and solves the problems mentioned above.

[0006] This application provides a fully automated formaldehyde analysis device based on textiles, employing the following technical solution: An automated formaldehyde analysis device based on textiles includes a detection module, which comprises a reagent addition and absorption component. This component includes a three-axis slide module and two Z2-axis stopper-grabbing manipulators, each equipped with a Z1-axis double-needle tip. The device also includes a cleaning component and a vibrating water bath heating component located below the Z2-axis stopper-grabbing manipulators. After the sample (cut and weighed) is placed in the flask, the triangular flask containing the sample is placed sequentially on a flask rack. The Z2-axis stopper-grabbing manipulator of the three-axis slide module picks up the stopper of the triangular flask. One of the Z1-axis double-needle tips from the three-axis slide module moves sequentially to the flask mouth, lowers to a suitable height, and after adding the set amount of extraction reagent, the Z2-axis stopper-grabbing manipulator of the three-axis slide module closes the stopper of the triangular flask. The detection module also includes a three-axis slide module II, a sample bottle lifting assembly, a sample bottle water bath heating assembly, a sample bottle automatic needle insertion assembly, and an analysis assembly. The sample bottle lifting assembly is equipped with a needle injection structure and a lifting frame located outside the sample bottle automatic needle insertion assembly. The needle injection structure includes a hollow clamping sleeve and a guide sleeve. The guide sleeve is fitted onto the outer surface of the clamping sleeve and is rotatably connected to the lifting frame to achieve lifting. The clamping sleeve is provided with a clamping component that works in conjunction with the lifting of the guide sleeve.

[0007] Optionally: The analytical assembly includes an analyzer flow cell assembly, and an infusion pump is installed on the outer wall of the analyzer flow cell assembly; the shaking water bath heating assembly is provided with a flask rack, and a number of clean sample bottles are arranged equidistantly inside the flask rack, wherein the flask rack is fixed on the shaking plate in the shaking water bath heating assembly and placed in the water bath.

[0008] Optionally: The number of automatic needle-sticking components for sample vials is two, and the two automatic needle-sticking components for sample vials are installed equidistantly on the sample vial lifting component. A second cleaning component for cleaning the automatic needle-sticking components for sample vials is provided below the sample vial lifting component.

[0009] Optionally: Both Z1 shaft-end dual needles are connected to the ends of the sample vial automatic needle insertion assembly, which allows the outside of the injection needle to be rinsed with pure water pumped in by the peristaltic pump, and the pump can also draw pure water to rinse the tubing.

[0010] Optionally, a sample bottle rack assembly is also fixed to the bottom side of the sample bottle lifting assembly. After the sample solution and colorimetric reagent are added to the sample bottle, the sample bottle lifting assembly lowers the sample bottle rack assembly of the sample bottle with the added sample solution and colorimetric reagent into the constant temperature water bath position of the sample bottle water bath heating assembly.

[0011] Optionally: the clamping sleeve is rotatably mounted on the bottom outer surface of the automatic needle insertion assembly of the sample bottle, and a conical head is inserted into the bottom of the automatic needle insertion assembly of the sample bottle. The guide sleeve is splinedly connected to the clamping sleeve, and a spline groove is provided on the inner side of the guide sleeve.

[0012] Optional: The guide sleeve is equipped with a guide component, and the automatic needle insertion assembly for sample vials is provided with a guide groove for use with the guide component. The guide groove is composed of a spiral groove and a straight groove, both of which are arranged around the outer surface of the automatic needle insertion assembly for sample vials. The guide component includes a guide shaft fixed inside the guide sleeve, and one end of the guide shaft is rotatably equipped with a guide ball that rolls with the guide groove.

[0013] Optionally: The inner side of the guide sleeve is provided with a conical guide slope that abuts against the clamping member. The clamping member includes a shaft, and two balls and a clamping block are respectively installed at both ends of the shaft. The clamping member abuts against the guide slope, and the clamping block abuts against the sample bottle.

[0014] Optionally: A second return spring is installed between the outer side of the clamping block and the inner side of the clamping sleeve; the clamping sleeve has a telescopic hole for shaft extension and retraction; and the number of clamping components is multiple.

[0015] Optionally, the needle injection structure further includes a buffer component, which includes two connecting pieces distributed vertically, with a return spring fixed between the two connecting pieces. The two connecting pieces are respectively rotated to be installed on the outer surface of the automatic needle insertion assembly of the sample vial and the top side of the guide sleeve.

[0016] In summary, this application includes at least one of the following beneficial technical effects: 1. The present invention automates the entire analytical process, from sample preparation, reagent addition, solution transfer, addition of colorimetric reagent, sample processing to final analysis, thereby reducing manual intervention, improving analytical efficiency and accuracy, and reducing human error.

[0017] 2. In this invention, both the reagent addition and aspiration assembly and the automatic sample vial insertion assembly are equipped with cleaning components. These components can clean the outside of the injection needle and the tubing before and after each operation, ensuring a clean experimental environment, avoiding cross-contamination, and improving the reliability of the analytical results.

[0018] 3. The present invention provides a water bath heating component that can perform water bath oscillation heating on samples according to the set heating temperature, heating time, oscillation frequency and oscillation time, providing a stable and precise environment for chemical reactions, which is beneficial to improving the accuracy and repeatability of the reaction.

[0019] 4. In this invention, when the guide sleeve continues to move downward and the guide shaft enters the spiral guide groove from the straight groove, the guide ball rolls in the guide groove, causing the guide shaft to rotate, which in turn drives the guide sleeve to rotate. The rotational motion simulates the effect of manually shaking the sample bottle, allowing the liquid in the bottle to be initially mixed instantly after the colorimetric reagent is added, reducing the subsequent waiting time for mixing, or making the water bath heating more uniform, thus improving the detection efficiency. Attached Figure Description

[0020] Figure 1 A three-dimensional structural diagram of the fully automated formaldehyde analysis device based on textiles provided in this embodiment; Figure 2 A three-dimensional structural diagram of the reagent addition suction assembly and the shaking water bath heating assembly provided in this embodiment; Figure 3 A three-dimensional structural diagram of the sample vial lifting assembly, sample vial water bath heating assembly, and sample vial automatic needle insertion assembly provided in this embodiment; Figure 4 This is a three-dimensional structural diagram of the analysis component provided in this embodiment; Figure 5 This is a flow path diagram of the automated pipetting assembly provided in this embodiment; Figure 6 A flow path diagram for adding extraction reagents to the aspiration assembly provided in this embodiment; Figure 7 This is a flow diagram of the cleaning assembly provided in this embodiment; Figure 8 This is a schematic diagram of the needle injection structure provided in this embodiment; Figure 9 This is a cross-sectional view of the needle injection structure provided in this embodiment; Figure 10 This is a quarter-section view of the needle injection structure provided in this embodiment; Figure 11 This application Figure 9 A magnified structural diagram of structure A is shown below; Figure 12 This is a bottom view of the needle injection structure provided in this embodiment; Figure 13 This is a bottom view of the buffer structure provided in this embodiment; Figure 14 This is a schematic diagram of the clamping component structure provided in this embodiment.

[0021] Explanation of reference numerals in the attached figures: 101. Three-axis slide stage module one; 102. Cleaning component one; 103. Z2-axis bottle stopper gripping robot; 104. Z1-axis dual needle end; 105. Oscillating water bath heating component; 201. Cleaning component two; 202. Three-axis slide stage module two; 203. Sample bottle lifting component; 204. Sample bottle water bath heating component; 205. Automatic needle insertion component for sample bottles; 2051. Conical head; 206. Sample bottle rack component; 301. Analysis component; 302. Analyzer flow cell assembly; 4. Needle injection structure; 41. Clamping sleeve; 42. Guide sleeve; 43. Buffer component; 431. Connecting piece; 432. Return spring one; 44. Guide shaft; 45. Guide ball one; 46. Guide groove; 47. Spline groove; 48. Clamping component; 481. Shaft; 482. Ball two; 483. Clamping block; 484. Return spring two; 49. Guide slope; 410. Telescopic hole; 5. Lifting frame. Detailed Implementation

[0022] The following is in conjunction with the appendix Figures 1-14 This application will be described in further detail.

[0023] Example 1, such as Figures 1-7 As shown, this is the first embodiment of the present invention. This embodiment provides a fully automated formaldehyde analysis device based on textiles, including a detection module. The detection module includes a reagent addition and absorption component, which includes a three-axis slide module 101 and two Z2-axis bottle stopper gripping manipulators 103. Both Z2-axis bottle stopper gripping manipulators 103 are equipped with Z1-axis end double needles 104. In use, the three-axis slide module 101 provides precise three-dimensional spatial movement capability for the Z2-axis bottle stopper gripping manipulators 103 and the Z1-axis end double needles 104, enabling them to accurately reach designated positions for operations such as gripping bottle stoppers and adding reagents, ensuring the accuracy and repeatability of the operation.

[0024] The reagent addition and aspiration assembly in this embodiment also includes a cleaning assembly 102 and an oscillating water bath heating assembly 105 located below the Z2 axis bottle stopper gripping robot 103. The cleaning assembly 102 cleans the relevant components after each operation, ensuring that each reagent addition operation is carried out in a clean environment, thus avoiding interference from residual reagents to subsequent tests. Specifically, in this embodiment, after the sample has been shredded and weighed, the triangular flask containing the sample is placed on the flask rack. The Z2 axis stopper gripping robot 103 of the three-axis slide module 101 picks up the stopper of the triangular flask. The double needle 104 at one of the Z1 axes of the three-axis slide module 101 moves to the mouth of the flask and lowers it to a suitable height. After adding and setting the amount of extraction reagent, the Z2 axis stopper gripping robot 103 of the three-axis slide module puts the stopper back on the triangular flask.

[0025] The detection module also includes a three-axis sliding stage module 202, a sample bottle lifting assembly 203, a sample bottle water bath heating assembly 204, a sample bottle automatic needle insertion assembly 205, and an analysis assembly 301. The analysis assembly 301 includes an analyzer flow cell assembly 302, and an infusion pump is installed on the outer wall of the analyzer flow cell assembly 302. The shaking water bath heating assembly 105 is equipped with a flask rack, and several clean sample bottles are arranged at equal intervals inside the flask rack. The flask rack is fixed on the shaking plate in the shaking water bath heating assembly 105 and placed in the water bath. After the sample solution and colorimetric reagent in the sample bottle are added, the sample bottle lifting assembly 203 lowers the sample bottle rack to the constant temperature water bath station 204 and performs water bath heating according to the set temperature and time. After water bath heating, the sample bottle rises to the loading / unloading station for draining and natural cooling. Once cooled to the set temperature, it rises to the needle injection station. The automatic needle injection assembly 205 first cleans the tubing, injection needle, and flow cuvette, then inserts the needle into the sample bottle to draw up the prepared solution and injects it into the flow cell of the analysis assembly 301. The analyzer then starts working to analyze the formaldehyde content and records and uploads the data. After analysis, the automatic needle injection assembly 205 rises to remove the needle, cleans the injection needle and tubing, and repeats the operation to complete the analysis of each sample bottle solution. After analysis, the tubing of the entire device is cleaned, and the sample bottle lifting assembly 203 lowers the sample bottle rack after the water bath to the loading / unloading station, waiting for a new sample bottle to be replaced for a new sample analysis test.

[0026] It should be noted that there are two sample vial automatic needle insertion components 205, and the two sample vial automatic needle insertion components 205 are installed equidistantly on the sample vial lifting component 203. A cleaning component 201 for cleaning the sample vial automatic needle insertion components 205 is provided below the sample vial lifting component 203.

[0027] Furthermore, both Z1 axis ends of the dual needles 104 and the ends of the sample vial automatic needle insertion assembly 205 are connected to peristaltic pumps, allowing the outside of the injection needles to be rinsed with pure water pumped in by the peristaltic pumps. At the same time, the pumps can also draw pure water to rinse the tubing. Specifically, a sample vial rack assembly 206 is also fixed to the bottom side of the sample vial lifting assembly 203. After the sample solution and colorimetric reagent in the sample vial are added, the sample vial lifting assembly 203 lowers the sample vial rack assembly 206 of the sample vial with added sample solution and colorimetric reagent into the constant temperature water bath position of the sample vial water bath heating assembly 204. In addition, pure water is pumped into the overflow tank of the cleaning tank by a peristaltic pump to rinse the outside of the injection needle and the tubing. The Z2 axis stopper gripping robot 103 of the three-axis slide module 101 picks up the stopper of the triangular flask. The Z1 axis double needle 104A adds the extraction reagent and then puts the stopper on. The operation is repeated to complete the addition of reagents to all flasks. After that, the water bath heating and shaking function is turned on and the water bath shaking heating is performed according to the set parameters. It should be noted that the sample bottle lifting assembly 203 raises the sample bottle rack containing the clean sample bottles to the needle injection station. The automatic needle injection assembly 205 first cleans the metering pump, tubing, and injection needle. After cleaning, it waits, and then after the water bath oscillation heating is completed, the Z2 axis bottle stopper gripping robot 103 grips the bottle stopper. The Z1 axis end double needle 104B draws the reacted solution from the triangular flask into the metering pump. The automatic needle injection assembly 205 moves the needle to the designated sample bottle position, injects the solution into the sample bottle after needle insertion, and then the metering pump switches the multi-port valve to add colorimetric reagent to the sample bottle. The automatic needle injection assembly 205 rises and removes the needle, cleans the injection needle and tubing, and repeats the operation to complete the quantitative sampling of the solution in each flask.

[0028] Example 2, as Figures 8-14 As shown, this is the second embodiment of the present invention. Unlike the first embodiment, the sample vial lifting assembly 203 is provided with a needle injection structure 4 and a lifting frame 5 located outside the sample vial automatic needle insertion assembly 205. Specifically, a conical head 2051 is inserted and installed at the bottom end of the sample vial automatic needle insertion assembly 205. When injecting into the sample vial, the sample vial automatic needle insertion assembly 205 moves down first, and at the same time, the needle injection structure 4 also moves down synchronously. With this action, the conical head 2051 on the sample vial automatic needle insertion assembly 205 can fit more closely and accurately into the inlet end of the sample vial, providing a good foundation for subsequent injection operations.

[0029] like Figures 8-13 As shown, the needle injection structure 4 in this embodiment includes a hollow clamping sleeve 41 and a guide sleeve 42. The guide sleeve 42 is fitted onto the outer surface of the clamping sleeve 41 and is rotatably connected to the lifting frame 5 to achieve lifting. The clamping sleeve 41 contains a clamping member 48 that works in conjunction with the lifting of the guide sleeve 42. During use, the clamping member 48 smoothly engages with the end of the sample vial as the needle injection structure 4 moves downward, achieving initial positioning and fixation of the vial. It should be noted that the clamping sleeve 41 is made of high-strength, corrosion-resistant materials, such as stainless steel, to ensure that it will not be damaged by reagent corrosion or frequent mechanical movements during long-term use, thus ensuring the stability and reliability of the structure. The design with a certain gap between the guide sleeve 42 and the clamping sleeve 41 ensures that the guide sleeve 42 can move smoothly relative to the clamping sleeve 41 while avoiding wobbling due to excessive gap, which could affect operational accuracy.

[0030] like Figure 11 As shown, the clamping sleeve 41 is rotatably mounted on the bottom outer surface of the sample vial automatic needle insertion assembly 205. The guide sleeve 42 is splinedly connected to the clamping sleeve 41, and a spline groove 47 is provided on the inner side of the guide sleeve 42, so that the guide sleeve 42 can have a certain degree of rotational freedom relative to the clamping sleeve 41 during the lifting and lowering process. To achieve the rotation of the guide sleeve 42, such as Figure 11 As shown, a guide component is installed inside the guide sleeve 42, and a guide groove 46 for use with the guide component is provided on the sample vial automatic needle insertion assembly 205. The guide groove 46 is composed of a spiral groove and a straight groove, both of which are arranged around the outer surface of the sample vial automatic needle insertion assembly 205. The guide component includes a guide shaft 44 fixed inside the guide sleeve 42. One end of the guide shaft 44 is rotatably mounted with a guide ball 45 that rolls with the guide groove 46. When the guide sleeve 42 continues to move downward, the guide shaft 44 enters the spiral guide groove 46 from the straight groove. The guide ball 45 rolls in the guide groove 46, causing the guide shaft 44 to rotate, which in turn drives the guide sleeve 42 to rotate. The rotational motion simulates the effect of manually shaking the sample vial, allowing the liquid in the vial to be initially mixed instantly after the addition of the colorimetric reagent, reducing the subsequent waiting time for mixing, or making the water bath heating more uniform, thus improving the detection efficiency. The guide ball 45 is made of high-precision, wear-resistant steel ball, which reduces wear and extends service life.

[0031] like Figure 13 As shown, the inner side of the guide sleeve 42 is provided with a conical guide slope 49 that abuts against the clamping member 48. The clamping member 48 includes a shaft 481, and two ends of the shaft 481 are respectively equipped with ball bearings 482 and clamping blocks 483. The clamping member 48 abuts against the guide slope 49, and the clamping blocks 483 abut against the sample bottle. It should be noted that during the injection process, the lifting frame 5 begins to move downward, thereby driving the guide sleeve 42 to move downward. When the guide sleeve 42 moves down, the guide shaft 44 will enter the spiral guide groove 46 from the straight groove on the guide sleeve 42. This positional change causes the guide shaft 44 to rotate. Before the guide shaft 44 enters the spiral guide groove 46, when the guide sleeve 42 is in the straight groove position and moves down, the guide slope 49 on the guide sleeve 42 will squeeze the shaft 481. After the shaft 481 is squeezed, it will cause the clamping block 483 to move further, thereby clamping the sample bottle more firmly and ensuring that the bottle will not shake or shift in subsequent operations.

[0032] like Figure 13 and Figure 14 As shown, a return spring 484 is installed between the outer side of the clamping block 483 and the inner side of the clamping sleeve 41. The clamping sleeve 41 has a telescopic hole 410 for the extension and retraction of the shaft 481. There are multiple clamping parts 48, which are used to engage with the end of the sample bottle during the downward movement of the needle injection structure 4 to achieve initial positioning and fixation of the bottle. Furthermore, the surface of the clamping block 483 that abuts against the sample bottle is made of anti-slip rubber material to increase the friction between the clamping block 483 and the sample bottle.

[0033] In addition, the needle injection structure 4 also includes a buffer 43, such as Figure 13As shown, the buffer component 43 includes two connecting pieces 431 arranged vertically. A return spring 432 is fixed between the two connecting pieces 431. The two connecting pieces 431 are respectively mounted on the outer surface of the automatic needle insertion assembly 205 of the sample vial and the top side of the guide sleeve 42. During the lifting and lowering of the guide sleeve 42, the buffer component 43 can play a buffering role, reducing the impact force caused by the unstable movement or sudden stop of the lifting frame 5, protecting the entire needle injection structure 4 from damage, and extending the service life of the equipment.

[0034] Combined with appendix Figures 1-14 The working principle of the above embodiments is as follows: After the textile sample is cut into pieces and weighed, it is placed in a triangular flask and then placed on the flask rack of the shaking water bath heating component 105. The reagent addition and aspiration component and the automatic sample bottle needle insertion component 205 are cleaned first. The peristaltic pump pumps pure water into the overflow tank of the cleaning tank to rinse the outside of the injection needle and the tubing. The bottle stopper gripping robot 103 on the Z2 axis of the three-axis slide module 101 picks up the stopper of the triangular flask. The extraction reagent is added by the double needle 104A at the Z1 axis end, and the bottle stopper is closed. The operation is repeated to complete the addition of reagents to all flasks. Then, the water bath heating and shaking function are turned on and the water bath shaking heating is performed according to the set parameters. At the same time, the sample bottle lifting component 203 raises the sample bottle rack with the clean sample bottles to the needle insertion position. The automatic sample bottle needle insertion component 205 first cleans the metering pump, tubing and injection needle, and waits after cleaning. After the water bath oscillation heating is completed, the Z2-axis stopper-grabbing robot 103 picks up the stopper, and the Z1-axis dual-needle tip 104B draws the reacted solution from the Erlenmeyer flask into the metering pump. The automatic sample vial insertion assembly 205 moves the needle to the designated sample vial position, inserts the needle, and injects the solution into the sample vial. Then, the metering pump switches to a multi-port valve to add colorimetric reagent to the sample vial. The automatic sample vial insertion assembly 205 rises and removes the needle, cleans the injection needle and tubing, and repeats the operation to complete the quantitative sampling of the solution in each flask. After the sample solution and colorimetric reagent are added to the sample vial, the sample vial lifting assembly 203 lowers the sample vial rack to the constant temperature water bath position of the sample vial water bath heating assembly, and performs water bath heating according to the set temperature and time. After water bath heating is completed, it rises to the loading and unloading position for draining and natural cooling. After cooling to the set temperature, it rises to the needle injection position. The automatic needle injection assembly 205 first cleans the tubing, injection needle, and flow cuvette, then inserts the needle into the sample vial to draw up the treated solution and injects it into the flow cell of the analysis assembly 301. The analyzer starts working to analyze the formaldehyde content and records and uploads the data. After analysis is completed, the automatic needle injection assembly 205 rises and removes the needle, cleans the injection needle and tubing, and repeats the operation to complete the analysis of each sample vial solution. After the analysis is completed, the pipeline of the entire device is cleaned. The sample bottle lifting assembly 203 lowers the water-bathed sample bottle rack to the loading and unloading station, waiting for the replacement of new sample bottles for new sample analysis and testing. Additionally, during the injection process, the lifting frame 5 begins to move downwards, which in turn drives the guide sleeve 42 to move downwards. As the guide sleeve 42 moves downwards, the guide shaft 44 enters the spiral guide groove 46 from the straight groove on the guide sleeve 42. This positional change causes the guide shaft 44 to rotate. Before the guide shaft 44 enters the spiral guide groove 46, when the guide sleeve 42 is in the straight groove position and moving downwards, the guide slope 49 on the guide sleeve 42 will squeeze the shaft 481. After the shaft 481 is squeezed, it will cause the clamping block 483 to move further, thereby clamping the sample bottle more firmly and ensuring that the bottle will not shake or shift during subsequent operations.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fully automated formaldehyde analysis device based on textiles, characterized in that: The system includes a detection module, which comprises a reagent addition and aspiration assembly. The reagent addition and aspiration assembly includes a three-axis slide module (101) and two Z2-axis bottle stopper gripping robots (103), each equipped with a Z1-axis dual-needle tip (104). The reagent addition and aspiration assembly also includes a cleaning assembly (102) and an oscillating water bath heating assembly (105) located below the Z2-axis bottle stopper gripping robots (103). After the sample has been shredded and weighed, the triangular flasks containing the sample are placed on the flask rack. The Z2 axis stopper gripping robot (103) of the three-axis slide module (101) grips the stopper of the triangular flask. The double needle (104) at one of the Z1 axes of the three-axis slide module (101) will move to the mouth of the flask and lower it to a suitable height. After adding and setting the amount of extraction reagent, the Z2 axis stopper gripping robot (103) of the three-axis slide module will put the stopper of the triangular flask on. The detection module also includes a three-axis slide module 2 (202), a sample bottle lifting assembly (203), a sample bottle water bath heating assembly (204), a sample bottle automatic needle insertion assembly (205), and an analysis assembly (301). The sample bottle lifting assembly (203) is provided with a needle injection structure (4) and a lifting frame (5) located outside the sample bottle automatic needle insertion assembly (205). The needle injection structure (4) includes a hollow-shaped clamping sleeve (41) and a guide sleeve (42). The guide sleeve (42) is fitted on the outer surface of the clamping sleeve (41), and the guide sleeve (42) is rotatably connected to the lifting frame (5) to achieve lifting. The clamping sleeve (41) is provided with a clamping component (48) for use in conjunction with the lifting of the guide sleeve (42).

2. The fully automated formaldehyde analysis device based on textiles according to claim 1, characterized in that: The analytical component (301) includes an analyzer flow cell component (302), and an infusion pump is installed on the outer wall of the analyzer flow cell component (302); the oscillating water bath heating component (105) is provided with a flask rack, and a number of clean sample bottles are arranged equidistantly inside the flask rack, wherein the flask rack is fixed on the oscillating plate in the oscillating water bath heating component (105) and placed in a water bath.

3. The fully automated formaldehyde analysis device based on textiles according to claim 1, characterized in that: The number of sample bottle automatic needle insertion components (205) is two, and the two sample bottle automatic needle insertion components (205) are installed equidistantly on the sample bottle lifting component (203). A second cleaning component (201) for cleaning the sample bottle automatic needle insertion components (205) is provided below the sample bottle lifting component (203).

4. The fully automated formaldehyde analysis device based on textiles according to claim 1, characterized in that: Both Z1 shaft-end double needles (104) and the sample vial automatic needle insertion assembly (205) are connected to peristaltic pumps, so that the outside of the injection needle can be rinsed by pure water pumped in by the peristaltic pump, and the pipeline can also be rinsed by pure water pumped in by the pump.

5. The fully automated formaldehyde analysis device based on textiles according to claim 1, characterized in that: The sample bottle lifting assembly (203) is also fixed with a sample bottle rack assembly (206) on the bottom side. After the sample solution and colorimetric reagent in the sample bottle are added, the sample bottle lifting assembly (203) lowers the sample bottle rack assembly (206) of the sample bottle with added sample solution and colorimetric reagent to the constant temperature water bath position of the sample bottle water bath heating assembly (204).

6. The fully automated formaldehyde analysis device based on textiles according to claim 1, characterized in that: The clamping sleeve (41) is rotatably mounted on the bottom outer surface of the sample bottle automatic needle insertion assembly (205), and a conical head (2051) is inserted into the bottom of the sample bottle automatic needle insertion assembly (205). The guide sleeve (42) is splinedly connected to the clamping sleeve (41), and a spline groove (47) is provided on the inner side of the guide sleeve (42).

7. The fully automated formaldehyde analysis device based on textiles according to claim 1, characterized in that: The guide sleeve (42) is equipped with a guide component inside, and the sample bottle automatic needle insertion assembly (205) is provided with a guide groove (46) for use with the guide component. The guide groove (46) is composed of a spiral groove and a straight groove with a spiral shape, and both are arranged around the outer surface of the sample bottle automatic needle insertion assembly (205). The guide component includes a guide shaft (44) fixed inside the guide sleeve (42). One end of the guide shaft (44) is rotatably equipped with a guide ball (45) that rolls with the guide groove (46).

8. The fully automated formaldehyde analysis device based on textiles according to claim 1, characterized in that: The inner side of the guide sleeve (42) is provided with a guide slope (49) that is conical in shape and abuts against the clamping member (48). The clamping member (48) includes a shaft (481). Two balls (482) and a clamping block (483) are respectively installed at both ends of the shaft (481). The clamping member (48) abuts against the guide slope (49), and the clamping block (483) abuts against the sample bottle.

9. The fully automated formaldehyde analysis device based on textiles according to claim 8, characterized in that: A second return spring (484) is installed between the outer side of the clamping block (483) and the inner side of the clamping sleeve (41). The clamping sleeve (41) has a telescopic hole (410) for the extension and retraction of the shaft (481) inside. There are multiple clamping parts (48).

10. The fully automated formaldehyde analysis device based on textiles according to claim 1, characterized in that: The needle injection structure (4) also includes a buffer (43), which includes two connecting pieces (431) distributed vertically. A reset spring (432) is fixed between the two connecting pieces (431). The two connecting pieces (431) are respectively rotated to the outer surface of the sample vial automatic needle insertion assembly (205) and the top side of the guide sleeve (42).

Images