Viscose Fiber Filtration Value Detection Device

Abstract

A viscose fiber filtration value testing device is disclosed for detecting the filtration value of viscose. The filter cylinder has tube seats welded to both ends, and a cylindrical boss welded to the middle of the filter cylinder, which fits into the cylindrical hole at the top of the main support. A filter cloth is placed between the tube seat and the filter screen at the bottom of the filter cylinder. A rubber sealing ring is placed between the filter screen and the lower pressure cap. Small cylinders on both sides of the locking clamp are hung in the grooves on both sides of the tube seat at the bottom of the filter cylinder. A locking screw tightens the lower pressure cap. One end of the rubber tube passes through the locking clamp and is fitted into the outlet of the lower pressure cap, while the other end of the rubber tube extends into a measuring cup. An air compressor is connected to the air inlet of the upper pressure cap via a compressed air buffer tank. A rubber sealing ring is placed between the tube seat and the upper pressure cap at the top of the filter cylinder. Small cylinders on both sides of the locking clamp are hung in the grooves on both sides of the tube seat at the top of the filter cylinder. A locking screw tightens the upper pressure cap, and a quick-release connector is installed in the air inlet of the upper pressure cap. This invention has a simple structure and high measurement accuracy.

Description

Technical Field

[0001] This utility model relates to the technical field of testing equipment in the chemical fiber production process, specifically a viscose filtration value testing device for viscose fibers. Background Technology

[0002] Currently known devices for detecting the viscose filtration value of viscose fibers include a jacketed container with a tube welded to the center of the container's lid. One end of the tube extends to the bottom of the container, while the other end connects to the outside, with a filter attached to the end of the tube. In use, compressed air is supplied to the container through a tube on a compressed air tank to maintain a constant pressure. The weight of the viscose collected after passing through the end filter at different time intervals is then calculated using a specified formula. A higher value indicates poorer viscose quality, while a lower value indicates better quality. This structure suffers from drawbacks such as structural complexity, difficulty in equipment manufacturing, and large errors in test results, making it difficult to meet the needs of modern viscose fiber industrial production for faster and higher-quality production. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the purpose of this invention is to provide a viscose filtration value detection device for viscose fibers, so as to achieve the purpose of accurately detecting the viscose filtration value.

[0004] To achieve the above-mentioned objectives, the viscose filtration value testing device for viscose fibers of this invention includes a filtration system, a compressed air buffer tank, and an air compressor. The filter cylinder of the filtration system has tube seats welded to both ends, and a cylindrical boss welded to the middle of the filter cylinder. The cylindrical boss fits into the cylindrical hole on the upper part of the main support and is fixed by a set screw. A filter cloth is provided between the tube seat and the filter screen below the filter cylinder, and a rubber sealing ring is placed between the filter screen and the lower pressure cover. Small cylinders on both sides of the locking clamp are hung in the grooves on both sides of the tube seat below the filter cylinder. A locking screw is rotated into the middle of the locking clamp, tightening the lower pressure cover. One end of the rubber tube is fitted into the outlet of the lower pressure cover, communicating with the filter cylinder, and the other end of the rubber tube extends into a measuring cup. The air compressor is connected to the air inlet on the upper pressure cover via the compressed air buffer tank.

[0005] Furthermore, a rubber sealing ring is placed between the upper tube seat and the upper pressure cover of the filter cylinder. The small cylinders on both sides of the locking clamp are hung in the grooves on both sides of the tube seat above the filter cylinder. The locking screw installed in the middle of the locking clamp is rotated and tightens the upper pressure cover. The quick-opening connector is installed in the air inlet of the upper pressure cover and communicates with the filter cylinder.

[0006] Furthermore, the ball valve at the outlet of the compressed air buffer tank is connected to one end of the air pipe, and the other end of the air pipe is connected to a quick-connect coupling.

[0007] Furthermore, the compressed air buffer tank has an exhaust ball valve at its exhaust port, a pressure gauge at its pressure gauge interface, a tank inlet ball valve at its air inlet, and a discharge port at its bottom. The air compressor outlet has a gas control valve connected to one end of an air pipe, and the other end of the air pipe is connected to the tank inlet ball valve. The air compressor is equipped with a safety valve and a pressure regulating valve.

[0008] Furthermore, the filter cloth has a multi-layer structure, consisting of a layer of fine cloth, a layer of double-sided fleece, and three layers of poplin.

[0009] Furthermore, the measuring cup is placed on the base of the main support.

[0010] Furthermore, the filter cylinder, upper pressure cap, locking clamp, locking screw, quick-opening connector, filter screen, lower pressure cap, and pipe seat are made of stainless steel.

[0011] Compared with the prior art, this utility model, when in use, involves starting the air compressor, opening the gas control valve, adjusting the pressure regulating valve, and opening the inlet ball valve of the compressed air buffer tank. Gas enters the compressed air buffer tank through the air pipeline. When the pressure gauge of the compressed air buffer tank reaches the specified pressure, the outlet ball valve of the tank is opened, and gas enters the filter cartridge through the upper quick-release connector of the air pipeline. Timing begins as soon as the first drop of adhesive begins to flow. A measuring cup is prepared to collect the adhesive. The adhesive flowing out from 0-20 minutes is discarded. A second measuring cup is used to collect the weight P1 of the adhesive flowing out from 20-40 minutes, and a third measuring cup is used to collect the weight P2 of the adhesive flowing out from 40-80 minutes. This process is carried out in a constant temperature room, ensuring the adhesive temperature is consistent with the room temperature. The adhesive collected from both processes is weighed on an electronic scale accurate to the gram. The weighing result is used to calculate the filter resistance value Kw using a formula. This invention features a simple structure, high measurement accuracy, and convenient cleaning. By accurately understanding the filtration performance of viscose, it provides a theoretical basis for accelerating and improving the quality of subsequent viscose fiber production, which is beneficial for reducing product costs. Attached Figure Description

[0012] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 for Figure 1 Enlarged view of point I.

[0014] Figure 3 for Figure 1 Enlarged view of section II.

[0015] Figure 4 for Figure 1 A schematic diagram of the structure of the filter cloth.

[0016] Figure 5 for Figure 1 A schematic diagram of the structure of the filter screen.

[0017] In the diagram: 1. Filter housing; 2. Compressed air buffer tank; 3. Air compressor; 4. Rubber gasket; 5. Upper pressure cap; 6. Locking clamp; 7. Locking screw; 8. Quick-release connector; 9. Air duct; 10. Set screw; 11. Main support; 12. Filter cloth; 12-1. Fine cloth; 12-2. Double-sided fleece; 12-3. Poplin; 13. Filter screen; 14. Lower pressure cap; 15. Rubber hose; 16. Measuring cup; 17. Tank outlet ball valve; 18. Tank inlet ball valve; 19. Exhaust ball valve; 20. Gas control valve; 21. Pressure regulating valve; 22. Safety valve; 23. Pipe seat; 24. Cylindrical boss; 25. Pressure gauge; 26. Discharge port. Detailed Implementation

[0018] To make the invention's objectives, technical solutions, and advantages clearer, the present invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the scope of protection of the present invention.

[0019] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the viscose filtration value detection device for viscose fiber of this utility model mainly includes a filtration system, a compressed air buffer tank 2, and an air compressor 3.

[0020] The filter housing 1 of the filtration system has tube seats 23 welded to both ends, and a cylindrical boss 24 welded to the middle of the filter housing 1. The cylindrical boss 24 is fitted into the cylindrical hole on the upper part of the main support 11 and fixed by set screws 10. A filter cloth 12 is provided between the tube seat 23 below the filter housing 1 and the filter screen plate 13. The filter cloth 12 has a three-layer structure, consisting of a layer of fine cloth 12-1, a layer of double-sided fleece 12-2, and a layer of poplin 12-3. A rubber sealing ring 4 is placed between the filter screen plate 13 and the lower pressure cover 14. The small cylinders on both sides of the locking clamp 6 are hung in the grooves on both sides of the tube seat 23 below the filter housing 1. The locking screw 7, which is rotated in the middle of the locking clamp 6, tightens the lower pressure cover 14, ensuring that the adhesive inside the filter housing 1 does not leak. One end of the rubber tube 15 is fitted into the lower pressure cover. The glue outlet of tube 14 is connected to the filter housing 1. The other end of tube 15 extends into the measuring cup 16, which is placed on the base of the main support 11. An appropriate amount of adhesive is poured into the upper part of the filter housing 1. A rubber sealing ring 4 is placed between the upper tube seat 23 and the upper pressure cover 5 of the filter housing 1. The small cylinders on both sides of the locking clamp 6 are hung in the grooves on both sides of the tube seat 23 above the filter housing 1. The locking screw 7, which is installed in the middle of the locking clamp 6, is rotated and tightens the upper pressure cover 5 to ensure that the adhesive in the filter housing 1 does not leak. The quick-opening connector 8 is installed in the air inlet of the upper pressure cover 5 and is connected to the filter housing 1. The filter housing 1, the upper pressure cover 5, the locking clamp 6, the locking screw 7, the quick-opening connector 8, the filter screen 13, the lower pressure cover 14, and the tube seat 23 are made of stainless steel.

[0021] Air compressor 3 is connected to the air inlet on the upper pressure cover 5 via compressed air buffer tank 2; the tank outlet ball valve 17 on the air outlet of compressed air buffer tank 2 is connected to one end of air pipe 9, and the other end of air pipe 9 is connected to quick-opening connector 8; the exhaust port of compressed air buffer tank 2 is equipped with exhaust ball valve 19. After filtering the amount of glue to be measured, the exhaust ball valve 19 is opened to clean the measuring instrument and wait for the next use; the pressure gauge interface of compressed air buffer tank 2 is equipped with pressure gauge 25, and the air inlet of compressed air buffer tank 2 is equipped with tank inlet ball valve 18. In order to facilitate pressure reduction and sewage discharge, an exhaust port 26 is set at the bottom of compressed air buffer tank 2; the outlet of air compressor 3 is equipped with gas control valve 20, which is connected to one end of air pipe 9, and the other end of air pipe 9 is connected to tank inlet ball valve 18; air compressor 3 is equipped with safety valve 22 and pressure regulating valve 21. The function of safety valve 22 is to trip when the pressure exceeds the design pressure of air storage tank, and pressure regulating valve 21 is used to set the required pressure.

[0022] Working principle of this utility model: In use, start the air compressor 3, open the gas control valve 20, adjust the pressure regulating valve 21, and open the inlet ball valve 18 of the compressed air buffer tank 2. Gas enters the compressed air buffer tank 2 through the air pipe 9. When the pressure gauge 25 of the compressed air buffer tank 2 reaches the specified pressure, open the outlet ball valve 17 of the tank. Gas enters the filter cylinder 1 through the quick-opening connector 8 at the top of the air pipe 9. At this time, prepare three measuring cups 16 and a stopwatch, and start timing. Start timing when the first drop of adhesive begins to drip out. Prepare measuring cup 16 to collect the adhesive. Discard the adhesive that flows out from 0-20 minutes. Replace with a second measuring cup 16 to collect the weight P1 of the adhesive that flows out from 20-40 minutes. Replace with a third measuring cup 16 to collect the weight P2 of the adhesive that flows out from 40-80 minutes. Perform this in a constant temperature room, ensuring that the adhesive temperature is consistent with the room temperature. Weigh the adhesive collected in both cases on an electronic scale accurate to grams, and calculate the weight using the formula: Kw={[2-(p2 / p1)] / (p2+p1)}×10 5 ×0.6; round to 5 decimal places; round the result to 3 decimal places.

[0023] Where: p1 = weight of adhesive filtered out (grams) after 20-40 minutes; P2 = Weight of adhesive (grams) filtered out after 40-80 minutes; The filter resistance Kw is calculated; the smaller the Kw value, the better the filtration performance of the viscose. Accurately understanding the filtration performance of viscose provides a theoretical basis for accelerating and improving the quality of subsequent viscose fiber production, which is beneficial for reducing product costs.

[0024] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A viscose filtration value detection device for viscose fibers, characterized in that: The adhesive filtration value testing device includes a filtration system, a compressed air buffer tank (2), and an air compressor (3); the filter cylinder (1) of the filtration system has pipe seats (23) welded to both ends, and a cylindrical boss (24) welded to the middle of the filter cylinder (1). The cylindrical boss (24) is fitted into the cylindrical hole at the top of the main support (11) and fixed by a set screw (10); a filter cloth (12) is provided between the pipe seat (23) below the filter cylinder (1) and the filter screen plate (13), and the filter screen plate (13) is connected to the lower pressure cover (14). The spacer is equipped with a rubber sealing ring (4), and the small cylinders on both sides of the locking clamp (6) are hung in the grooves on both sides of the tube seat (23) below the filter body (1). The locking screw (7) installed in the middle of the locking clamp (6) is rotated and the locking screw (7) is pressed against the lower pressure cover (14). One end of the rubber tube (15) is fitted into the outlet of the lower pressure cover (14) and communicates with the filter body (1). The other end of the rubber tube (15) extends into the measuring cup (16). The air compressor (3) is connected to the air inlet on the upper pressure cover (5) through the compressed air buffer tank (2).

2. The viscose filtration value detection device for viscose fibers according to claim 1, characterized in that: A rubber sealing ring (4) is placed between the upper tube seat (23) and the upper pressure cover (5) of the filter cylinder (1). The small cylinders on both sides of the locking clamp (6) are hung in the grooves on both sides of the tube seat (23) above the filter cylinder (1). The locking screw (7) installed in the middle of the locking clamp (6) is rotated and tightened against the upper pressure cover (5). The quick-opening connector (8) is installed in the air inlet of the upper pressure cover (5) and communicates with the filter cylinder (1).

3. The viscose filtration value detection device for viscose fibers according to claim 1, characterized in that: The compressed air buffer tank (2) has a tank outlet ball valve (17) connected to one end of the air pipe (9), and the other end of the air pipe (9) is connected to a quick-release connector (8).

4. The viscose filtration value detection device for viscose fibers according to claim 1, characterized in that: The compressed air buffer tank (2) is equipped with an exhaust ball valve (19) at its exhaust port, a pressure gauge (25) at its pressure gauge interface, a tank inlet ball valve (18) at its air inlet, and an exhaust port (26) at the bottom of the compressed air buffer tank (2). The air compressor (3) is equipped with a gas control valve (20) at its outlet. The gas control valve (20) is connected to one end of the air pipe (9), and the other end of the air pipe (9) is connected to the tank inlet ball valve (18). The air compressor (3) is equipped with a safety valve (22) and a pressure regulating valve (21).

5. The viscose filtration value detection device for viscose fibers according to claim 1, characterized in that: The filter cloth (12) has a multi-layer structure, consisting of a layer of fine cloth (12-1), a layer of double-sided fleece (12-2), and three layers of poplin (12-3).

6. The viscose filtration value detection device for viscose fibers according to claim 1, characterized in that: The measuring cup (16) is placed on the base of the main support (11).

7. The viscose filtration value detection device for viscose fibers according to claim 1, characterized in that: The filter cylinder (1), upper pressure cover (5), locking clamp (6), locking screw (7), quick-opening connector (8), filter screen (13), lower pressure cover (14), and pipe seat (23) are made of stainless steel.

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