Full-automatic fiber dissolution quantitative testing device

Abstract

The invention discloses a full-automatic fiber dissolution quantitative testing device which comprises a rack, a reagent tank, a clear water tank, a waste liquid tank and a dissolution container, the reagent tank and the clear water tank are installed at the top of the rack, the dissolution container is installed in the middle of the rack, the waste liquid tank is installed at the bottom of the rack, and the reagent tank and the clear water tank are connected with the dissolution container through pipelines. The dissolving container is connected with a waste liquid tank through a pipeline, an air stirring device is arranged on the rack relative to the position above the dissolving container, and the air stirring device inflates the dissolving container when stirring is needed. According to the invention, all parts are reasonably arranged, substances in the dissolving container can be effectively stirred by using the aeration stirring device, and the reagent tank and the clear water tank adopt specific structures and are provided with liquid level meters to realize liquid level monitoring.

Description

Technical Field

[0001] The present invention relates to a fiber dissolution testing device, and more particularly to a fully automatic fiber dissolution quantitative testing device. Background Art

[0002] Quantitative analysis of fiber composition is a core part of textile testing. Chemical dissolution methods, such as those in GB / T2910.11, selectively dissolve a fiber component using a specific reagent and calculate the composition ratio using the remaining fiber mass. However, traditional testing methods have the following significant drawbacks: 1. Low manual operation efficiency. Existing laboratories generally use a manual single-sample processing mode. The operation process includes reagent injection, timed stirring, filtration and cleaning, drying and weighing, etc., and a single sample takes up to 2-3 hours. For batch testing needs such as corporate quality control or third-party testing, the efficiency bottleneck of manual operation leads to long testing cycles and high costs, and is prone to errors due to differences in operator proficiency.

[0003] 2. Stirring damages fibers. To accelerate dissolution, existing technologies often use mechanical stirring, such as blade stirrers or magnetic stirring. However, mechanical force can easily cause fibers to adhere to the stirring rod, seriously affecting detection accuracy. Magnetic stirring, on the other hand, requires the placement of magnets within the container, making it difficult to adapt to high-throughput equipment and posing the risk of magnetic contamination.

[0004] 3. Limitations of automated equipment. Although some automated equipment has been introduced in recent years, the following problems still exist: Low processing throughput: Most devices only support parallel processing of 4-8 samples, which cannot meet the needs of large-scale testing; High leakage risk: The connection between the reagent flow channel and the container is not sealed enough, and highly corrosive reagents such as concentrated sulfuric acid are prone to leakage and damage the equipment; Single function: Lack of integrated constant temperature and flushing, still requires manual assistance.

[0005] 4. Challenges with quality control and standardization. The GB / T2910.11 standard has strict regulations on parameters such as reagent filling volume, temperature control, and flushing times. Manual operation is prone to process deviations, such as a filling volume error of >5%. Furthermore, traditional methods make it difficult to monitor abnormal conditions such as reagent leaks and waste liquid overflows in real time, posing safety risks.

[0006] Based on the above situation, there is an invention patent in the prior art with announcement number CN218496927U, entitled "A device for analyzing fiber components." The invention patent discloses that a dissolving vessel is provided for dissolving fibers, and an agitator is used to achieve automatic stirring during the dissolution process. However, during the stirring process, the agitator achieves stirring by rotating a stirring rod in the dissolving vessel through a stirring motor, which will also cause the problem in the second point above. Summary of the Invention

[0007] In view of the shortcomings of the prior art, the object of the present invention is to provide a fully automatic fiber dissolution quantitative testing device that will not damage the fiber due to stirring operation during the dissolution process.

[0008] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a fully automatic fiber dissolution quantitative testing device, comprising a frame, a reagent tank, a clean water tank, a waste liquid tank and a dissolution container, wherein the reagent tank and the clean water tank are installed on the top of the frame, the dissolution container is installed in the middle of the frame, and the waste liquid tank is installed at the bottom of the frame, the reagent tank and the clean water tank are connected to the dissolution container through a pipe from top to bottom, and the dissolution container is connected to the waste liquid tank through a pipe from top to bottom, and the frame is provided with an aeration stirring device at a position above the dissolution container, and when a stirring operation is required, the aeration stirring device inflates air into the dissolution container.

[0009] As a further improvement of the present invention, the dissolution container includes a fixed bed fixedly installed in the middle of the frame and several containers arranged on the fixed bed, a reagent flow channel is provided in the fixed bed, the reagent flow channel is connected with several containers to inject reagents into the containers, and the reagent flow channel is connected with the reagent tank and the clean water tank through a pipeline. As a further improvement of the present invention, the container includes an outer cup and an inner cup, the outer cup is fixedly mounted on the fixed bed, the inner cup is inserted into the outer cup, and the lower end is connected to the reagent flow channel. As a further improvement of the present invention, the side wall of the upper end of the inner cup is bent outward to form a rim. When the inner cup is inserted into the outer cup, the outer wall of the rim abuts against the upper end of the outer cup to limit the inner cup from sliding down. As a further improvement of the present invention, a lid is placed in the inner cup, and an air pipe is fixed at the center of the lid. The lower end of the air pipe extends to a position close to the lower end of the inner cup. When stirring operation is required, the aeration stirring device injects stirring gas into the air pipe, and the stirring gas is output from the lower end of the air pipe. A plurality of air outlet holes are opened on the lid, and a plurality of the air outlet holes are distributed in a circle on the lid with the air pipe as the center. A plurality of the air outlet holes are distributed in a circle on the lid with the air pipe as the center. The gas output from the lower end of the air pipe passes through the liquid and is discharged from the air outlet holes to the atmosphere.

[0010] As a further improvement of the present invention, a glass sand core plate is fixed at a position near the lower end of the inner cup, and the glass sand core plate divides the internal space of the inner cup into two parts, an upper part and an lower part. As a further improvement of the present invention, a mounting groove is provided on the fixed bed at a position relative to the end of the reagent flow channel, the lower end of the outer cup is inserted into the mounting groove and is sealed and fixed to the groove wall of the mounting groove by a sealing ring. As a further improvement of the present invention, the inflation and stirring device includes an inflation beam and an inflation rod, and a plurality of inflation nozzles are arranged at the lower end of the inflation rod. The inflation rod can be arranged horizontally on the inflation beam and can be raised and lowered at the same time. When stirring operation is required, the inflation rod is moved horizontally to the top of the inner cup and then lowered, and the inflation nozzle is connected to the upper end of the trachea to inflate toward the trachea. As a further improvement of the present invention, the dissolution container further comprises a constant temperature water tank, which is fixedly mounted in the frame and filled with constant temperature water, and the fixed bed is arranged with the container in the constant temperature water tank.

[0011] As a further improvement of the present invention, it also includes a vacuum drainage ball, the upper side of which is connected to a valve and then connected to a dissolution container, the lower side of which is connected to a valve and then connected to a waste liquid tank, and the side of the vacuum drainage ball is also connected to a vacuum device.

[0012] Beneficial effects of this patent: Compared with the traditional quantitative analysis method of fiber composition in the background technology, the present invention has significant advancements. Traditional manual operation is inefficient, and the processing of a single sample takes 2-3 hours. The present invention realizes automated operation, which can greatly shorten the detection time, improve batch detection efficiency, reduce detection costs, and reduce errors introduced by differences in operator proficiency. Traditional stirring methods such as mechanical stirring can easily cause fibers to adhere to the stirring rod, affecting accuracy. Magnetic stirring is difficult to adapt to high-throughput equipment and has the risk of magnetic contamination. The present invention adopts an aerated stirring device to avoid damage to the fiber, improve detection accuracy, and is more suitable for high-throughput equipment. Existing automated equipment has low processing throughput, high leakage risk, and single function. The device of the present invention improves the processing throughput by rationally arranging various components, optimizes the sealing structure to reduce the risk of leakage, and integrates modules such as a constant temperature water tank, which is more comprehensive and reduces manual auxiliary operations. In terms of quality control and standardization, traditional manual operation is prone to process deviations and is difficult to monitor abnormal conditions in real time. The present invention can better accurately control parameters such as reagent filling volume according to standards, monitor abnormal conditions in real time, and eliminate safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of the structure of the fully automatic fiber dissolution quantitative testing device of the present invention; Figure 2 for Figure 1 Schematic diagram of the mid-flow channel; Figure 3 for Figure 1 Schematic diagram of the structure of the dissolution container; Figure 4 It is a structural diagram of the vacuum drainage ball part. DETAILED DESCRIPTION

[0014] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0015] Reference Figure 1 As shown, the fully automatic fiber dissolution quantitative testing device of this embodiment includes a frame 1, a reagent tank 2, a clean water tank 3, a waste liquid tank 4 and a dissolution container 6, wherein the reagent tank 2 and the clean water tank 3 are mounted on the top of the frame 1, the dissolution container 6 is mounted in the middle of the frame 1, and the waste liquid tank 4 is mounted at the bottom of the frame 1. The reagent tank 2 and the clean water tank 3 are connected to the dissolution container 6 through a pipe from top to bottom, and the dissolution container 6 is connected to the waste liquid tank 4 through a pipe from top to bottom. The frame 1 is provided with an aeration stirring device 7 at a position above the dissolution container 6. When a stirring operation is required, the aeration stirring device 7 is inflated toward the dissolution container 6. The liquid in the reagent tank 2 and the clean water tank 3 flows to the dissolution container 6 through the pipe, and the waste liquid after the reaction flows into the waste liquid tank 4. The aeration stirring device 7 generates airflow disturbance by inflating the dissolution container 6 to achieve stirring. Compared with the mechanical stirring method used in the prior art, this structure avoids the damage to the fiber caused by manual addition of reagents and mechanical stirring through automated pipeline connection and inflation stirring, and solves the problems of low manual operation efficiency and fiber damage caused by stirring in traditional methods. At the same time, compared with the method of driving the dissolution container 6 to swing and stir, the connection between the dissolution container 6 and the pipeline is fixed, so it is not easy to leak. Solenoid valves are set in the connected pipelines to realize the control of liquid flow. In this embodiment, there are two reagent tanks 2, namely a sulfuric acid tank and a dilute ammonia water tank, and liquid level gauges are provided on the reagent tank 2 and the clean water tank 3 to facilitate liquid level monitoring.

[0016] Further, refer to Figure 2 and Figure 3 As shown, the dissolution container 6 includes a fixed bed 61 fixedly installed in the middle of the frame 1 and a plurality of containers 62 arranged on the fixed bed 61. A reagent flow channel is provided in the fixed bed 61, which is connected to the container 62 and connected to the reagent tank 2 and the clean water tank 3 through a pipe, and reagents can be injected into the container 62. The reagent flow channel evenly distributes the liquid in the reagent tank 2 and the clean water tank 3 to each container 62, realizing parallel processing of multiple samples. This design supports multiple containers 62 to work simultaneously, significantly improves the detection throughput, solves the problem of low processing throughput of existing automated equipment, and meets the needs of large-scale detection, such as Figure 2As shown in , this embodiment provides a flow channel structure design for simultaneously feeding 8 containers 62 with liquid, simultaneously feeding 2 containers 62 with liquid, simultaneously feeding 2 containers 62 with liquid, and simultaneously feeding 4 containers 62 with liquid. For the flow channel for simultaneously feeding 8 containers 62 with liquid, a main channel plus four branch channels are combined, and the containers 62 are arranged one by one at the end of the branch channels. For the flow channel for simultaneously feeding 2 containers 62 with liquid, simultaneously feeding 2 containers 62 with liquid, and simultaneously feeding 4 containers 62 with liquid, two independent flow channels and a main channel and four branch channels are combined, and the same containers 62 are arranged one by one at the end of the branch channels and the end of the independent flow channels. Furthermore, container 62 comprises an outer cup 621 and an inner cup 622. Outer cup 621 is fixed to fixed bed 61, while inner cup 622 is inserted into outer cup 621, with its lower end connected to a reagent flow channel. Reagent enters inner cup 622 through the reagent flow channel. The inner and outer cup structures facilitate disassembly and cleaning. After the test is completed, inner cup 622 can be directly removed from outer cup 621 for weighing. In addition, in this embodiment, the upper end of inner cup 622 extends upward and out of the upper end of outer cup 621, further facilitating user access to inner cup 622. Furthermore, the side wall of the upper end of the inner cup 622 is bent outward to form a rim 6221. When the inner cup 622 is inserted into the outer cup 621, the outer wall of the rim 6221 is abutted against the upper end of the outer cup 621 to limit the inner cup 622 from sliding down. By forming the rim 6221 above the inner cup 622, the rim 6221 can be used to limit the placement of the inner cup 622. In this way, there is no need to set a support structure at the lower end of the inner cup 622, thereby increasing the flux of the flow channel entering the inner cup 622. Furthermore, a lid 623 is placed within the inner cup 622. An air tube 626 is fixed to the center of the lid 623. The lower end of the air tube 626 extends to a position near the lower end of the inner cup 622. When stirring is required, the aeration stirring device 7 injects stirring gas into the air tube 626. The stirring gas is discharged from the lower end of the air tube 626 and enters the liquid. The lid 623 is provided with a plurality of air outlet holes 627, which are distributed circumferentially around the air tube 626. The gas output from the lower end of the air tube 626 passes through the liquid and is discharged into the atmosphere through the air outlet holes 627. During stirring, the aeration stirring device 7 injects stirring gas into the air tube 626, and the gas is discharged from the air outlet holes 627, forming an air flow stirring. The gas enters the bottom of the inner cup 622 through the air tube 626 and is dispersed and overflowed from the air outlet holes 627, driving the solution to flow and achieve contactless stirring. This aerated stirring method avoids the adhesion and contamination of mechanical stirring blades or magnets to the fibers, solves the problem of fiber damage in traditional stirring methods, and improves detection accuracy. At the same time, an air outlet plate 6261 is provided at the lower end of the air pipe 626, and a plurality of air outlet holes are provided on the lower end surface of the air outlet plate 6261. By utilizing the function of the air outlet plate 6261, the stirred gas can better enter the inner cup 622, thereby achieving a better stirring effect. When the inner cup 622 is taken out and weighed, it will be weighed together with the connecting cover 623.

[0017] Furthermore, a glass sand core plate 6222 is fixed near the lower end of the inner cup 622, dividing the interior space of the inner cup 622 into upper and lower sections. The glass sand core plate 6221 filters the fibers, allowing the dissolved liquid to flow through the sand core plate into the lower space. This structure effectively separates the fibers from the solution, facilitating subsequent filtration and cleaning operations, preventing fiber blockage, and improving the smoothness of the testing process. Furthermore, a mounting groove is defined on the fixed bed 61 relative to the end of the reagent flow path. The lower end of the outer cup 621 is inserted into the mounting groove and is sealed and secured to the groove wall via a sealing ring. The sealing ring ensures a sealed connection between the outer cup 621 and the fixed bed 61, preventing leakage of the reagent from the connection. The sealing method of this embodiment is to provide a sealing ring 6211 for mounting on the lower outer wall of the outer cup 621, and then to attach sealing rings 6212 to the upper and lower end surfaces of the sealing ring 6211. At the same time, an annular groove 6213 for sealing is defined on the groove wall near the bottom of the groove. When the outer cup 621 is installed, the sealing ring 6211 is embedded in the annular groove 6213, and the sealing ring 6212 abuts against the outer cup 6211 to achieve a seal.

[0018] Further, refer to Figure 1As shown, the aeration and stirring device 7 includes an aeration beam 71 and an aeration rod 72. A plurality of aeration nozzles are arranged at the lower end of the aeration rod 72. The aeration rod 72 is arranged to be movably disposed on the aeration beam 71 and can be raised and lowered. When a stirring operation is required, the aeration rod 72 is translated to the top of the inner cup 622 and then lowered. The aeration nozzle is docked with the upper end of the air pipe 626 and air is inflated toward the air pipe 626. Through the translation and lifting of the aeration rod 72, the aeration nozzle is precisely docked with the air pipes 626 of multiple containers 62, and aeration and stirring are performed in each container 62 sequentially or simultaneously. The movable inflatable structure supports the automated stirring operation of multiple containers 62, and cooperates with the parallel processing of multiple containers, which significantly improves the detection efficiency and realizes the automated control of high-throughput detection. The translation of the inflation rod 72 of this embodiment can be achieved by means of a sliding cylinder or a screw rod, and the lifting of the inflation rod 72 is achieved by setting a base that is movably connected to the inflation beam 71, and the inflation rod 72 as a whole can be lifted and lowered on the base. Furthermore, dissolution vessel 6 includes a constant-temperature water tank 63 fixedly mounted within frame 1 and filled with constant-temperature water. Fixed bed 61 and container 62 are positioned within this tank. This provides a constant temperature environment for container 62. The constant-temperature water within tank 63 is supplied by a thermostat, ensuring that the dissolution process proceeds at a standard temperature. This constant-temperature design meets the stringent temperature control requirements of GB / T2910.11, improving the accuracy and standardization of test results.

[0019] Further, refer to Figure 4 As shown, it also includes a vacuum drainage ball 8, the upper side of the vacuum drainage ball 8 is connected to the dissolution container 6 through a valve, and the lower side of the vacuum drainage ball 8 is connected to the waste liquid tank 4 through a valve. The side of the vacuum drainage ball 8 is also connected to a vacuum device. Through the setting of the vacuum drainage ball 8, it is possible to first open the upper and lower valves during the drainage process to discharge the liquid into the waste liquid tank 4, and then close the upper and lower valves, start the vacuum equipment to extract the vacuum drainage ball 8 into a vacuum, and after stopping the extraction, open the upper valve, and use the vacuum negative pressure to force the liquid in the flow channel into the vacuum drainage ball 8, and finally open the lower valve to achieve final drainage. Compared with the method of direct drainage through the pipeline, this has a better drainage effect and can better avoid liquid residue inside the flow channel.

[0020] In summary, this solution utilizes a layered layout of the rack 1, parallel processing of multiple containers 62, contactless stirring by the aeration stirring device 7, a high-precision sealing structure, and an integrated design of a constant-temperature water tank 63 to construct a fully automated fiber dissolution quantitative detection system. Compared to existing technologies, this device addresses issues such as low manual operation efficiency, fiber damage from stirring, low processing throughput, high leakage risk, and inaccurate temperature control. It achieves automated, high-throughput detection of multiple samples, avoids fiber damage caused by mechanical stirring, improves sealing and constant-temperature control accuracy, and meets the requirements for efficient, accurate, and standardized quantitative analysis of fiber composition in textile testing.

[0021] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A fully automatic fiber dissolution quantitative testing device, comprising a frame (1), a reagent tank (2), a clean water tank (3), a waste liquid tank (4) and a dissolution container (6), wherein the reagent tank (2) and the clean water tank (3) are mounted on the top of the frame (1), the dissolution container (6) is mounted in the middle of the frame (1), and the waste liquid tank (4) is mounted at the bottom of the frame (1), the reagent tank (2) and the clean water tank (3) are connected to the dissolution container (6) through a pipe from top to bottom, and the dissolution container (6) is connected to the waste liquid tank (4) through a pipe from top to bottom, and a liquid level gauge is provided on the outer wall of the reagent tank (2) and the clean water tank (3) to monitor the liquid level in the reagent tank (2) and the clean water tank (3), characterized in that: The frame (1) is provided with an aeration stirring device (7) at a position above the dissolution container (6). When a stirring operation is required, the aeration stirring device (7) inflates air into the dissolution container (6).

2. The fully automatic fiber dissolution quantitative testing device according to claim 1, characterized in that: The dissolution container (6) comprises a fixed bed (61) fixedly mounted in the middle of the frame (1) and a plurality of containers (62) arranged on the fixed bed (61). A reagent flow channel is provided in the fixed bed (61), and the reagent flow channel is connected to the plurality of containers (62) so as to inject the reagent into the container (62). The reagent flow channel is connected to the reagent tank (2) and the clean water tank (3) through a pipeline.

3. The fully automatic fiber dissolution quantitative testing device according to claim 2, characterized in that: The container (62) includes an outer cup (621) and an inner cup (622), wherein the outer cup (621) is fixedly mounted on the fixed bed (61), and the inner cup (622) is inserted into the outer cup (621), with the lower end being connected to the reagent flow channel.

4. The fully automatic fiber dissolution quantitative testing device according to claim 3, characterized in that: The side wall of the upper end of the inner cup (622) is bent outward to form a rim (6221). When the inner cup (622) is inserted into the outer cup (621), the outer wall of the rim (6221) abuts against the upper end of the outer cup (621) to limit the inner cup (622) from sliding downward.

5. The fully automatic fiber dissolution quantitative testing device according to claim 3 or 4, characterized in that: A lid (623) is placed in the inner cup (622), and an air pipe (626) is fixed at the center of the lid (623). The lower end of the air pipe (626) extends to a position close to the lower end of the inner cup (622). When stirring operation is required, the aeration stirring device (7) injects stirring gas into the air pipe (626), and the stirring gas is output from the lower end of the air pipe (626) and enters the liquid. A plurality of air outlet holes (627) are opened on the lid (623), and the plurality of air outlet holes (627) are distributed in a circular pattern on the lid (623) with the air pipe (626) as the center. The gas output from the lower end of the air pipe (626) passes through the liquid and is discharged from the air outlet holes (627) to the atmosphere.

6. The fully automatic fiber dissolution quantitative testing device according to claim 3 or 4, characterized in that: A glass sand core plate (6222) is fixed at a position near the lower end of the inner cup (622), and the glass sand core plate (6222) divides the internal space of the inner cup (622) into two parts, an upper part and an lower part.

7. The fully automatic fiber dissolution quantitative testing device according to claim 3 or 4, characterized in that: A mounting groove is provided on the fixed bed (61) at a position relative to the end of the reagent flow channel. The lower end of the outer cup (621) is inserted into the mounting groove and is sealed and fixed to the groove wall of the mounting groove via a sealing ring.

8. The fully automatic fiber dissolution quantitative testing device according to claim 5, characterized in that: The aeration stirring device (7) includes an aeration beam (71) and an aeration rod (72). A plurality of aeration nozzles are arranged at the lower end of the aeration rod (72). The aeration rod (72) is arranged to be movably arranged on the aeration beam (71) and can be raised and lowered at the same time. When a stirring operation is required, the aeration rod (72) is moved to the top of the inner cup (622) and then lowered. The aeration nozzle is docked with the upper end of the air pipe (626) and air is inflated toward the air pipe (626).

9. The fully automatic fiber dissolution quantitative testing device according to any one of claims 2 to 4, characterized in that: The dissolution container (6) further comprises a constant temperature water tank (63), which is fixedly mounted in the frame (1) and filled with constant temperature water. The fixed bed (61) is provided with the container (62) in the constant temperature water tank (63).

10. The fully automatic fiber dissolution quantitative testing device according to any one of claims 1 to 4, characterized in that: It also includes a vacuum drainage ball (8), the upper side of the vacuum drainage ball (8) is connected to a valve and then connected to the dissolution container (6), the lower side of the vacuum drainage ball (8) is connected to a valve and then connected to the waste liquid tank (4), and the side of the vacuum drainage ball (8) is also connected to a vacuum device.

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