Fully automatic fiber dissolution quantitative testing device

Abstract

This utility model discloses a fully automatic quantitative fiber dissolution testing device, including a frame, a reagent tank, a water tank, a waste liquid tank, and a dissolution container. The reagent tank and 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 water tank are connected to the dissolution container through pipes, and the dissolution container is connected to the waste liquid tank through pipes. An aeration and stirring device is installed on the frame above the dissolution container. When stirring is required, the aeration and stirring device aerates the dissolution container. This utility model, through the reasonable layout of the components, utilizes the aeration and stirring device to effectively stir the substances in the dissolution container. Furthermore, the reagent tank and water tank adopt a specific structure and are equipped with level gauges for liquid level monitoring.

Description

Technical Field

[0001] This utility model relates to a fiber dissolution testing device, and more specifically to a fully automatic quantitative fiber dissolution testing device. Background Technology

[0002] Quantitative analysis of fiber composition is a core step in textile testing. Chemical dissolution methods, such as those in GB / T2910.11, selectively dissolve a specific fiber component using a particular reagent and calculate the component proportion using the remaining fiber mass. However, traditional testing methods have the following significant drawbacks:

[0003] 1. Low efficiency of manual operation. Existing laboratories generally adopt a manual single-sample processing mode. The operation process includes reagent addition, timed stirring, filtration and washing, drying and weighing, etc., which takes 2-3 hours per sample. For batch testing needs, such as enterprise quality control or third-party testing, the efficiency bottleneck of manual operation leads to long testing cycles, high costs, and is prone to errors due to differences in operator proficiency.

[0004] 2. Damage to fibers caused by stirring methods. To accelerate dissolution, existing technologies often employ mechanical stirring, such as blade stirrers or magnetic stirring. However, mechanical force can easily cause fibers to adhere to the stirring rod, severely affecting detection accuracy. Magnetic stirring, on the other hand, requires placing magnetic particles inside the container, making it difficult to adapt to high-throughput equipment and posing a risk of magnetic particle contamination.

[0005] 3. Limitations of automated equipment. Although some automated equipment has emerged in recent years, the following problems still exist:

[0006] Low throughput: Most devices only support parallel processing of 4-8 samples, which cannot meet the needs of large-scale testing; High risk of leakage: Insufficient sealing at the connection between reagent flow channels and containers, and highly corrosive reagents such as concentrated sulfuric acid are prone to leakage and damage to the equipment; Limited functionality: Lack of integrated temperature control and rinsing, still requiring manual operation.

[0007] 4. Challenges in quality control and standardization. The GB / T2910.11 standard has strict regulations on parameters such as reagent dosage, temperature control, and number of rinsing cycles. Manual operation is prone to process deviations, such as a liquid volume error of >5%. In addition, traditional methods are difficult to monitor abnormalities such as reagent leakage and waste liquid overflow in real time, posing safety hazards.

[0008] Based on the above, the existing technology has a utility model patent with announcement number CN218496927U entitled "A Fiber Composition Analysis Device", which discloses that a dissolving vessel is set up to dissolve fibers, and an automatic stirring is achieved by a stirrer during the dissolution process. However, the stirring is achieved by a stirring motor driving a stirring rod to rotate in the dissolving vessel, which also leads to the problem mentioned in point 2 above. Utility Model Content

[0009] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a fully automatic fiber dissolution quantitative testing device that will not damage the fibers due to stirring during the dissolution process.

[0010] To achieve the above objectives, this utility model provides the following technical solution: a fully automatic fiber dissolution quantitative testing device, comprising a frame, a reagent tank, a water tank, a waste liquid tank, and a dissolving container. The reagent tank and the water tank are installed on the top of the frame, the dissolving 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 water tank are connected to the dissolving container through pipes from top to bottom, and the dissolving container is connected to the waste liquid tank through pipes from top to bottom. An aeration and stirring device is provided on the frame above the dissolving container. When stirring is required, the aeration and stirring device inflates the dissolving container.

[0011] As a further improvement of this utility model, the dissolving container includes a fixed bed fixedly installed in the middle of the frame and several containers arranged on the fixed bed. The fixed bed is provided with a reagent flow channel, which is connected to several containers to inject reagents into the containers. The reagent flow channel is connected to a reagent tank and a water tank through a pipe.

[0012] As a further improvement of this utility model, the container includes an outer cup and an inner cup. The outer cup is fixedly installed on a fixed bed, and the inner cup is inserted into the outer cup, with its lower end communicating with the reagent flow channel.

[0013] As a further improvement of this utility model, 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 restrict the inner cup from sliding down.

[0014] As a further improvement of this utility model, a lid is placed inside the inner cup, and an air tube is fixed at the center of the lid. The lower end of the air tube extends to a position near the lower end of the inner cup. When a stirring operation is required, the aeration stirring device injects stirring gas into the air tube, and the stirring gas is output from the lower end of the air tube. The lid has several air outlets, which are circumferentially distributed on the lid with the air tube as the center. The gas output from the lower end of the air tube passes through the liquid and is discharged into the atmosphere through the air outlets.

[0015] As a further improvement of this utility model, a glass frosted core plate is fixed inside the inner cup near the lower end, which divides the internal space of the inner cup into upper and lower parts.

[0016] As a further improvement of this utility model, an installation groove is provided on the fixed bed at the position relative to the end of the reagent flow channel. The lower end of the outer cup is inserted into the installation groove and sealed and fixed to the groove wall by a sealing ring.

[0017] As a further improvement of this utility model, the air-filled stirring device includes an air-filled crossbeam and an air-filled rod. Several air-filled nozzles are arranged at the lower end of the air-filled rod. The air-filled rod is slidably set on the air-filled crossbeam and can be raised and lowered at the same time. When stirring is required, the air-filled rod is slidably moved above the inner cup and then lowered. The air-filled nozzles are connected to the upper end of the air pipe and inflate towards the air pipe.

[0018] As a further improvement of this utility model, the dissolving container also includes a constant temperature water tank, which is fixedly installed in the frame and filled with constant temperature water. The fixed bed with the container is set in the constant temperature water tank.

[0019] As a further improvement of this utility model, it also includes a vacuum drain ball, the upper side of which is connected to a valve and then connected to a dissolving container, the lower side of which is connected to a valve and then connected to a waste liquid tank, and a vacuum device is also connected to the side of the vacuum drain ball.

[0020] The beneficial effects of this utility model patent are:

[0021] Compared to traditional methods for quantitative analysis of fiber composition in the background art, this invention has significant advantages. Traditional manual operation is inefficient, with single sample processing taking 2-3 hours. This invention, however, achieves automated operation, significantly shortening detection time, improving batch detection efficiency, reducing detection costs, and minimizing errors introduced by differences in operator skill. Traditional stirring methods, such as mechanical stirring, can cause fibers to adhere to the stirring rod, affecting accuracy. Magnetic stirring is difficult to adapt to high-throughput equipment and poses a risk of magnetic contamination. This invention uses an air-filled stirring device, avoiding damage to the fibers, improving detection accuracy, and is more suitable for high-throughput equipment. Existing automated equipment has low throughput, high leakage risk, and limited functionality. This invention improves throughput through a rational layout of components, optimizes the sealing structure to reduce leakage risk, and integrates modules such as a constant temperature water bath, making it more comprehensive and reducing manual intervention. In terms of quality control and standardization, traditional manual operation is prone to process deviations and makes it difficult to monitor abnormalities in real time. This invention can better control parameters such as reagent dosage according to standards, monitor abnormalities in real time, and eliminate safety hazards. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the fully automatic fiber dissolution quantitative testing device of this utility model;

[0023] Figure 2 for Figure 1 Schematic diagram of the central channel;

[0024] Figure 3 for Figure 1 A schematic diagram of the structure of the dissolving container;

[0025] Figure 4 This is a schematic diagram of the vacuum drainage ball section. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the embodiments shown in the accompanying drawings.

[0027] Reference Figure 1 As shown, the fully automated fiber dissolution quantitative testing device of this embodiment includes a frame 1, a reagent tank 2, a water tank 3, a waste liquid tank 4, and a dissolution container 6. The reagent tank 2 and water tank 3 are installed at the top of the frame 1, the dissolution container 6 is installed in the middle of the frame 1, and the waste liquid tank 4 is installed at the bottom of the frame 1. The reagent tank 2 and water tank 3 are connected to the dissolution container 6 via pipes running from top to bottom, and the dissolution container 6 is connected to the waste liquid tank 4 via pipes running from top to bottom. An aeration and stirring device 7 is positioned above the dissolution container 6 on the frame 1. When stirring is required, the aeration and stirring device 7 aerates the dissolution container 6. The liquid in the reagent tank 2 and water tank 3 flows by gravity into the dissolution container 6 through pipes, and the waste liquid after the reaction flows into the waste liquid tank 4. The aeration and stirring device 7 aerates the dissolution container 6 by generating airflow disturbance. Compared to the mechanical stirring method used in the prior art, this structure avoids damage to the fibers caused by manual reagent addition and mechanical stirring through automated pipeline connection and aeration stirring. It solves the problems of low efficiency of manual operation and fiber damage caused by stirring in the traditional method. At the same time, compared to the method of driving the dissolving container 6 to swing and stir, the connection between the dissolving container 6 and the pipeline is fixed, so it is not easy to have leakage problems. Solenoid valves are installed in the connected pipelines to control the flow of liquid. In this embodiment, there are two reagent tanks 2, namely a sulfuric acid tank and a dilute ammonia tank.

[0028] Furthermore, refer to Figure 2 and Figure 3 As shown, the dissolving container 6 includes a fixed bed 61 fixedly installed in the middle of the frame 1 and several containers 62 arranged on the fixed bed 61. The fixed bed 61 has a reagent flow channel that communicates with the containers 62 and is connected to the reagent tank 2 and the water tank 3 via pipes, allowing reagents to be injected into the containers 62. The reagent flow channel evenly distributes the liquid from the reagent tank 2 and the water tank 3 to each container 62, enabling parallel processing of multiple samples. This design supports the simultaneous operation of multiple containers 62, significantly improving the detection throughput, solving the problem of low throughput in existing automated equipment, and meeting the needs of large-scale detection, such as... Figure 2As shown in the figure, this embodiment provides a flow channel structure design for simultaneous liquid inlet of 8 containers 62, 2 containers 62, 2 containers 62, and 4 containers 62. For the flow channel for simultaneous liquid inlet of 8 containers 62, a combination of a main channel and four branch channels is adopted, with each container 62 correspondingly set at the end of the branch channel. For the flow channels for simultaneous liquid inlet of 2 containers 62, 2 containers 62, and 4 containers 62, two independent flow channels, a combination of a main channel and four branch channels are adopted, with each container 62 correspondingly set at the end of the branch channel and the end of the independent flow channel.

[0029] Furthermore, container 62 includes an outer cup 621 and an inner cup 622. The outer cup 621 is fixed on the fixed bed 61, and the inner cup 622 is inserted into the outer cup 621, with its lower end communicating with the reagent flow channel. The reagent enters the inner cup 622 through the reagent flow channel. The inner and outer cup structure facilitates disassembly and cleaning. After the experiment is completed, the inner cup 622 can be directly removed from the outer cup 621 for weighing. In addition, in this embodiment, the upper end of the inner cup 622 extends upwards through the upper part of the outer cup 621, further facilitating the user's handling of the inner cup 622.

[0030] Furthermore, the side wall at the upper end of the inner cup 622 bends 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 restrict the inner cup 622 from sliding down. By forming a 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, which increases the flow rate into the inner cup 622.

[0031] Furthermore, a lid 623 is placed inside the inner cup 622. A gas tube 626 is fixed to the center of the lid 623, with its lower end extending near the lower end of the inner cup 622. When stirring is required, the aeration stirring device 7 injects stirring gas into the gas tube 626. The stirring gas exits from the lower end of the gas tube 626 and enters the liquid. The lid 623 has several vent holes 627, which are circumferentially distributed around the gas tube 626. The gas exiting from the lower end of the gas tube 626 passes through the liquid and is discharged into the atmosphere through the vent holes 627. During stirring, the aeration stirring device 7 injects stirring gas into the gas tube 626, and the gas exits from the vent holes 627, forming an airflow for stirring. The gas enters the bottom of the inner cup 622 through the gas tube 626 and disperses and overflows from the vent holes 627, driving the solution flow and achieving contactless stirring. This pneumatic stirring method avoids the adhesion and contamination of fibers by mechanical stirring blades or magnetic particles, solves the problem of fiber damage caused by traditional stirring methods, and improves detection accuracy. At the same time, an air outlet plate 6261 is set at the lower end of the air pipe 626. Several air outlet holes are opened on the lower end face of the air outlet plate 6261. By utilizing the function of the air outlet plate 6261, the stirring gas can be better introduced into the inner cup 622, achieving a better stirring effect. Furthermore, when the inner cup 622 is removed for weighing, it is weighed together with the cover 623.

[0032] Furthermore, a glass frit plate 6222 is fixed near the lower end inside the inner cup 622, dividing the internal space of the inner cup 622 into upper and lower parts. The glass frit plate 6222 filters fibers, allowing the dissolved liquid to flow through the plate into the lower space. This structure achieves effective separation of fibers and solution, facilitating subsequent filtration and cleaning operations, avoiding fiber clogging of the flow channel, and improving the smoothness of the detection process.

[0033] Furthermore, 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 sealed and fixed to the groove wall by a sealing ring. The sealing ring ensures a sealed connection between the outer cup 621 and the fixed bed 61, preventing reagent leakage from the connection. In this embodiment, the sealing method involves providing a sealing ring 6211 for installation on the lower outer wall of the outer cup 621, and then installing sealing rings 6212 on the upper and lower end faces of the sealing ring 6211. At the same time, an annular groove 6213 for sealing is provided on the groove wall near the bottom of the groove. When the outer cup 621 is inserted, the sealing ring 6211 is embedded in the annular groove 6213, and the sealing is achieved by the sealing ring 6212 abutting against it.

[0034] Furthermore, refer to Figure 1As shown, the aeration and stirring device 7 includes an aeration beam 71 and an aeration rod 72. Several inflation nozzles are arranged at the lower end of the inflation rod 72. The inflation rod 72 is slidably mounted on the aeration beam 71 and can be raised and lowered simultaneously. When stirring is required, the inflation rod 72 moves horizontally above the inner cup 622 and then lowers, with the inflation nozzles engaging with the upper end of the air pipe 626, inflating the air pipe 626. Through the raising and lowering of the aeration beam 71 and the horizontal movement of the inflation rod 72, precise engagement of the inflation nozzles with the air pipes 626 of multiple containers 62 is achieved, allowing for sequential or simultaneous inflation and stirring of each container 62. This movable inflatable structure supports automated stirring of multiple containers 62. With parallel processing of multiple containers, it significantly improves detection efficiency and realizes automated control of high-throughput detection. In this embodiment, the translation of the inflatable rod 72 can be achieved by sliding cylinder or lead screw. The lifting and lowering of the inflatable rod 72 is achieved by setting a base that can be translated and connected to the inflatable crossbeam 71, so that the inflatable rod 72 can be lifted and lowered on the base.

[0035] Furthermore, the dissolving container 6 also includes a constant-temperature water bath 63 fixedly installed within the frame 1, filled with constant-temperature water. The fixed bed 61, carrying the container 62, is positioned within the constant-temperature water bath 63. The constant-temperature water bath 63 provides a constant temperature environment for the container 62, and the constant-temperature water within the bath 63 is supplied by a temperature control device, ensuring that the dissolving process takes place at a standard temperature. This temperature control design meets the stringent temperature control requirements of the GB / T2910.11 standard, improving the accuracy and standardization of the test results.

[0036] Furthermore, 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 a valve and then to the dissolving container 6. The lower side of the vacuum drainage ball 8 is connected to a valve and then to the waste liquid tank 4. The side of the vacuum drainage ball 8 is also connected to a vacuum device. By setting up the vacuum drainage ball 8, during the drainage process, the upper and lower valves are first opened to discharge the liquid into the waste liquid tank 4. Then, the upper and lower valves are closed, and the vacuum device is started to draw a vacuum into the vacuum drainage ball 8. After the drawing stops, the upper valve is opened, and the liquid in the flow channel is forcefully drawn into the vacuum drainage ball 8 by the vacuum negative pressure. Finally, the lower valve is opened to achieve the final drainage. Compared with the method of directly draining liquid through a pipe, the drainage effect is better and it can better avoid liquid residue inside the flow channel.

[0037] In summary, this solution constructs a fully automated quantitative fiber dissolution detection system through the layered layout of the frame 1, the parallel processing of multiple containers 62, the non-contact stirring of the aeration stirring device 7, the high-precision sealing structure, and the integrated design of the constant temperature water bath 63. Compared with the prior art, this device solves the problems of low efficiency of manual operation, fiber damage caused by stirring, low throughput, high risk of leakage, and inaccurate temperature control. It achieves automated, high-throughput detection of multiple samples, avoids fiber damage caused by mechanical stirring, improves sealing performance and temperature control accuracy, and meets the high-efficiency, accurate, and standardized requirements for quantitative analysis of fiber components in textile testing.

[0038] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A fully automatic fiber dissolution quantitative testing device, comprising a frame (1), a reagent tank (2), a water tank (3), a waste liquid tank (4), and a dissolution container (6), wherein the reagent tank (2) and the water tank (3) are installed at the top of the frame (1), the dissolution container (6) is installed in the middle of the frame (1), and the waste liquid tank (4) is installed at the bottom of the frame (1); the reagent tank (2) and the water tank (3) are connected to the dissolution container (6) via pipes from top to bottom, and the dissolution container (6) is connected to the waste liquid tank (4) via pipes from top to bottom, characterized in that: The frame (1) is provided with an aeration stirring device (7) above the dissolving container (6). When a stirring operation is required, the aeration stirring device (7) is aerated into the dissolving container (6).

2. The fully automated fiber dissolution quantitative testing device according to claim 1, characterized in that: The dissolving container (6) includes a fixed bed (61) fixedly installed in the middle of the frame (1) and several containers (62) arranged on the fixed bed (61). The fixed bed (61) is provided with a reagent flow channel, which is connected to several containers (62) to inject reagent into the containers (62). The reagent flow channel is connected to the reagent tank (2) and the water tank (3) through a pipe.

3. The fully automated 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). The outer cup (621) is fixedly installed on the fixed bed (61), and the inner cup (622) is inserted into the outer cup (621), with its lower end connected to the reagent flow channel.

4. The fully automated fiber dissolution quantitative testing device according to claim 3, characterized in that: The upper sidewall of the inner cup (622) bends 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 restrict the inner cup (622) from sliding down.

5. The fully automated fiber dissolution quantitative testing device according to claim 3 or 4, characterized in that: The inner cup (622) contains a lid (623), and a gas tube (626) is fixed in the center of the lid (623). The lower end of the gas tube (626) extends to a position close to the lower end of the inner cup (622). When stirring is required, the gas-filling stirring device (7) injects stirring gas into the gas tube (626). The stirring gas is output from the lower end of the gas tube (626) and enters the liquid. The lid (623) has several vent holes (627). The several vent holes (627) are distributed in a circle on the lid (623) with the gas tube (626) as the center. The gas output from the lower end of the gas tube (626) passes through the liquid and is discharged into the atmosphere through the vent holes (627).

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

7. The fully automated fiber dissolution quantitative testing device according to claim 3 or 4, characterized in that: An installation 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 installation groove and sealed and fixed to the groove wall by a sealing ring.

8. The fully automated 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). Several aeration nozzles are arranged at the lower end of the aeration rod (72). The aeration rod (72) can be slidably set 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 slidably moved above the inner cup (622) and then lowered. The aeration nozzles are connected to the upper end of the air pipe (626) and aeration is performed towards the air pipe (626).

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

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

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