Double-plate screen changing device based on lyocell fibers

Abstract

The utility model provides a double-plate screen exchanger based on lyocell fibers, which relates to the technical field of double-plate screen exchangers, and comprises a screen exchanger main body, a plurality of filter screens, a plurality of filter screens and a plurality of filter screens, the sliding plate is arranged in the sub-runner, the sliding plate is provided with a perforated plate, a drain valve is arranged on the same side of the sliding plate and the top of the screen exchanger body, a material receiving groove is formed in the end, away from the screen exchanger body, of the drain valve, and the sliding plate is connected with the sub-runner; and the displacement sensor is arranged below the screen changer main body. The device achieves material distribution, waste discharge and monitoring of displacement of the sliding plate, and has the advantages of being reasonable in structure, facilitating waste treatment and accurately controlling the position of the sliding plate.

Description

Technical Field

[0001] This utility model relates to the field of dual-plate screen changer technology, and more specifically, to a dual-plate screen changer device based on lyocell fiber. Background Technology

[0002] Lyocell (Lyocel) materials have several main problems during polymerization production, including high viscosity, easy adhesion to the walls, temperature sensitivity, and easy decomposition due to excessive residence time. They are also prone to static electricity generation and accumulation during production, which can lead to sparks and ignition, thus affecting the overall product quality. These are the most pressing issues to be addressed in the production of this material.

[0003] The existing screen changer structure is basically unable to solve the problem of ignition caused by static electricity accumulation due to material accumulation.

[0004] Therefore, there is an urgent need for a double-plate screen-changing device based on lyocell fiber to replace the existing technology in order to solve the problem of ignition caused by static electricity accumulation due to material accumulation. Utility Model Content

[0005] In view of this, this utility model proposes a double-plate screen changing device based on lyocell fiber, which aims to solve the problem of ignition caused by static electricity accumulation due to material accumulation.

[0006] This utility model provides a dual-plate screen changing device based on lyocell fiber, comprising:

[0007] The main body of the screen changer has a flow channel inside;

[0008] A slide plate is disposed inside the diversion channel and is slidably connected to the diversion channel. The slide plate is provided with a perforated plate, and an exhaust groove is provided on the side of the perforated plate. The slide plate and the top of the screen changer body are provided with exhaust valve mounting holes on the same side. There are two sets of exhaust valve mounting holes, and the lengths of the two sets of exhaust valve mounting holes are different.

[0009] A discharge valve is installed inside the discharge valve mounting hole, and a material receiving trough is provided at the end of the discharge valve away from the main body of the screen changer.

[0010] Furthermore, double-headed bolt positioning posts are distributed at the bottom of the screen changer body. A connecting plate is provided at the end of the double-headed bolt positioning post away from the screen changer body. Cooling pipes are provided on the side of the connecting plate, and through holes are provided on the upper surface of the connecting plate. Two oil cylinders are arranged side by side on the lower surface of the connecting plate. A piston rod is provided inside the oil cylinder, and the piston rod passes through the through hole.

[0011] Furthermore, two sets of displacement sensors are fixedly connected to one side of the connecting plate. The two sets of displacement sensors are arranged parallel to the two hydraulic cylinders respectively. The displacement sensors are equipped with displacement sensor telescopic rods inside, and the ends of the displacement sensor telescopic rods are bolted to the displacement sensor fixing parts.

[0012] Furthermore, the slide plate is provided in two sets, and the two sets of slide plates have the same structure and are respectively horizontally arranged with the two hydraulic cylinders. A piston rod fixing component is fixedly connected to the side of the slide plate near the double-headed bolt positioning column. The displacement sensor fixing component is fixedly connected to the piston rod fixing component, and the piston rod fixing component is connected to the top of the piston rod. The slide plates are arranged correspondingly inside the diversion channel, dividing the diversion channel into a feeding channel and a discharging channel. A U-shaped slide plate cold / hot pipe is opened inside the slide plate. A filter screen is provided on the upper surface of the porous plate, and a pressure ring is provided on the upper surface of the filter screen. The radius of the pressure ring is the same as that of the filter screen.

[0013] Furthermore, the perforated plate has several tapered holes.

[0014] Furthermore, the main body of the screen changer includes an inlet plate and an outlet plate, with upper and lower spacers provided between the inlet plate and the outlet plate, and the inlet plate, outlet plate and spacers are fastened together by bolts.

[0015] Furthermore, the inlet plate and outlet plate are respectively provided with two sets of heat medium heating pipes, and the two sets of heating pipes are symmetrically distributed along the axis of symmetry of the slide plate.

[0016] Furthermore, a pad is provided on the same side of the slide plate as the drain valve mounting hole. The pad is trapezoidal and its inclined side is in contact with the drain valve. The height of the pad is lower than the height of the cold / hot pipe of the slide plate. The slide plate and the pad are bolted together.

[0017] Furthermore, a skateboard temperature sensor is installed inside the skateboard.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1. The basic structure of the screen changer is a double-plate screen changer. The shell is heated by heat transfer oil (heat medium), which can accurately control the internal temperature of the screen changer and avoid affecting the fiber quality due to temperature fluctuations.

[0020] 2. The slide plate is equipped with a discharge mechanism. The discharge volume is adjusted by the discharge valve. The discharge mechanism discharges the deposited material to avoid static electricity accumulation that may cause an explosion. The cold / hot piping of the slide plate is equipped with corresponding temperature measuring points to control the temperature balance of the slide plate, so as to avoid the decomposition and explosion caused by excessive temperature or the impact on product quality due to excessively low temperature. The small holes of the slide plate are machined into tapered holes to reduce the retention of material under pressure.

[0021] 3. The cylinder mounting plate is machined with cooling water channels to reduce heat conduction. Equipment operation generates a large amount of heat; if this heat cannot be dissipated in time, it will affect the normal operation and service life of the equipment. The presence of cooling water channels can remove heat promptly, ensuring that the cylinder and related components operate in a suitable temperature environment, extending the overall service life of the equipment and reducing maintenance costs.

[0022] 4. The screen changer is equipped with a displacement sensor, which, through an electronic control system, controls the solenoid valves of the hydraulic station. This causes the slide plate to perform timed micro-movements (bidirectional fixed-distance movement), preventing material adhesion and retention, ensuring good material flow within the screen changer, and guaranteeing continuous and stable production. Furthermore, this intelligent control method can be flexibly adjusted according to actual production conditions to adapt to different process requirements. Attached Figure Description

[0023] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0024] Figure 1 A schematic diagram of the structure of a double-plate screen-changing device based on lyocell fiber provided in an embodiment of this utility model;

[0025] Figure 2 A cross-sectional view of the main body of the screen switch provided in an embodiment of this utility model;

[0026] Figure 3 A front view of a double-plate screen-changing device based on lyocell fiber provided in an embodiment of this utility model;

[0027] Figure 4 A top view of the screen switch provided in an embodiment of this utility model;

[0028] Figure 5 A schematic diagram of the structure of the skateboard provided in an embodiment of this utility model;

[0029] Figure 6 A cross-sectional view of a double-plate screen-changing device based on lyocell fiber provided in an embodiment of this utility model;

[0030] Figure 7 for Figure 2 Enlarged view of a portion of point A in the middle;

[0031] Figure 8 This is a schematic diagram of the working state position provided for an embodiment of the present utility model.

[0032] In the diagram: 100 - Main body of the screen changer; 110 - Feed channel; 120 - Discharge channel; 130 - Heating medium pipe; 140 - Inlet plate; 150 - Outlet plate; 160 - Gasket; 200 - Slide plate; 201 - Slide plate cold / hot piping; 210 - Drain valve; 211 - Receiving trough; 212 - Drain valve mounting hole; 230 - Gasket block; 240 - Perforated plate; 241 - With tapered small hole; 242 - Exhaust. 250-Filter screen; 260-Pressure ring; 270-Slide plate temperature sensor; 300-Connecting plate; 310-Double-headed bolt positioning post; 320-Cooling pipe; 400-Piston rod fixing part; 410-Piston rod; 420-Displacement sensor; 421-Displacement sensor telescopic rod; 430-Displacement sensor fixing part; 500-Hydraulic cylinder; 600-Screen changing position; 700-Exhaust position; 800-Working position. Detailed Implementation

[0033] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0034] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0035] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0036] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] See Figure 1-6As shown, this embodiment provides a dual-plate screen switching device based on lyocell fiber, comprising:

[0038] The main body of the screen changer 100 has a flow channel inside;

[0039] The slide plate 200 is installed inside the diversion channel and is slidably connected to the diversion channel. The slide plate 200 is provided with a perforated plate 240. The perforated plate 240 has an exhaust groove 242 on its side. The slide plate 200 and the screen changer body 100 are provided with a discharge valve mounting hole 212 on the same side of the top. There are two sets of discharge valve mounting holes 212, and the two sets of discharge valve mounting holes 212 are of different lengths.

[0040] The discharge valve 210 is located inside the discharge valve mounting hole 212, and a receiving groove 211 is provided at the end of the discharge valve 210 away from the screen changer body 100.

[0041] As can be seen from the above, the amount and nature of waste generated vary at different stages of the production process. A shorter installation hole 212 can accommodate a smaller diameter discharge valve 210 for discharging small amounts of fine waste. For example, in the early stages of production, when there are relatively few impurities in the material, the discharge volume can be precisely controlled using a small-diameter discharge valve 210, avoiding excessive material waste. A longer installation hole can accommodate a larger diameter discharge valve 210. After a period of production, when a large amount of waste has accumulated, the larger-diameter discharge valve can quickly discharge a large amount of waste, improving waste discharge efficiency and ensuring production continuity.

[0042] Understandably, the diversion channel inside the screen changer body 100 effectively diverts the material, reducing the filtration pressure on the filter screen 250 and facilitating subsequent processing. The sliding plate 200, located within the diversion channel, allows for easy replacement of the filter screen 250, ensuring the stability and accuracy of the diversion. The exhaust groove 242 on the side of the perforated plate 240 on the sliding plate 200 allows for timely discharge of gas from the device after material filtration, preventing defects such as air bubbles from forming in the product due to residual gas, thus improving product quality and performance. The sliding plate 200 is equipped with a discharge valve 210, which regulates the discharge rate, discharging deposited material and preventing static electricity buildup that could lead to explosions.

[0043] Specifically, the bottom of the screen changer body 100 is provided with double-headed bolt positioning posts 310. The end of the double-headed bolt positioning posts 310 away from the screen changer body 100 is provided with a connecting plate 300. Cooling pipes 320 are provided on the side of the connecting plate 300, and a through hole is provided on the upper surface of the connecting plate 300. A hydraulic cylinder 500 is provided on the lower surface of the connecting plate 300. A piston rod 410 is provided inside the hydraulic cylinder 500 and passes through the through hole.

[0044] Understandably, the hydraulic cylinder 500 contains a piston rod 410 that passes through a through hole, allowing the hydraulic cylinder 500 to apply power to the connected slide plate 200 via the piston rod 410. A cooling pipe 320 is provided on the side of the connecting plate 300 to reduce temperature conduction.

[0045] Specifically, two sets of displacement sensors 420 are fixedly connected to one side of the connecting plate 300. The two sets of displacement sensors 420 are arranged parallel to the two hydraulic cylinders 500 respectively. The displacement sensor 420 has a displacement sensor telescopic rod 421 inside, and the end of the displacement sensor telescopic rod 421 is bolted to the displacement sensor fixing part 430.

[0046] Specifically, two sets of slide plates 200 are provided, and the two sets of slide plates 200 have the same structure. A piston rod fixing member 400 is fixedly connected to the side of the slide plate 200 near the double-headed bolt positioning post 310. The displacement sensor fixing member 430 is fixedly connected to the piston rod fixing member 400, and the piston rod fixing member 400 is connected to the top end of the piston rod 410. The slide plate 200 corresponds to...

[0047] Arranged inside the distribution channel, the distribution channel is divided into a feed channel 110 and a discharge channel 120. The slide plate 200 has a U-shaped slide plate cold / hot pipe 201 inside. The upper surface of the perforated plate 240 is provided with a filter screen 250, and the upper surface of the filter screen 250 is provided with a pressing ring 260, the radius of which is the same as that of the filter screen 250.

[0048] Understandably, the screen changer is equipped with a displacement sensor 420, which controls the solenoid valve of the hydraulic station through the electronic control system, so that the slide plate 200 makes timed micro-movements (bidirectional fixed-distance movement) to avoid material adhesion and retention.

[0049] It is understandable that when the hydraulic cylinder 500 is activated: the piston rod 410 drives the piston rod fixing part 400 and the slide plate 200 to move. At this time, the displacement sensor telescopic rod 421 moves synchronously. The displacement sensor 420 precisely controls the movement distance of the slide plate by setting the movement position distance.

[0050] Understandably, the cold / hot piping 201 of the slide plate, in conjunction with the corresponding temperature measuring points, controls the temperature balance of the slide plate 200 to avoid excessively high temperatures causing decomposition and explosion, or excessively low temperatures affecting product quality.

[0051] See Figure 7 As shown, the perforated plate 240 has several tapered holes 241.

[0052] Understandably, the perforated plate 240 has several tapered holes 241 to reduce material retention under pressure.

[0053] Specifically, the main body 100 of the screen changer includes an inlet plate 140 and an outlet plate 150. Upper and lower pads 160 are provided between the inlet plate 140 and the outlet plate 150. The inlet plate 140, the outlet plate 150 and the pads 160 are fastened together by bolts.

[0054] Specifically, the inlet plate 140 and the outlet plate 150 are respectively provided with two sets of heat medium heating pipes 130, and the two sets of heating pipes are symmetrically distributed along the axis of symmetry of the slide plate.

[0055] Specifically, a pad 230 is provided on the same side of the slide plate 200 as the discharge valve mounting hole 212. The pad 230 is trapezoidal and its inclined side is in contact with the discharge valve 210. The height of the pad 230 is lower than the height of the slide plate cold / hot pipe 201. The slide plate 200 and the pad 230 are bolted together.

[0056] Specifically, a skateboard temperature sensor 270 is installed inside the skateboard 200.

[0057] Understandably, the main body 100 of the screen changer is connected by bolts to the inlet plate 140, the outlet plate 150, and the upper and lower spacers 160 between them, resulting in a stable structure that facilitates installation, disassembly, and maintenance. Two sets of heat medium heating pipes 130, symmetrically distributed along the axis of symmetry of the slide plate, are correspondingly arranged on the inlet plate 140 and the outlet plate 150, which can uniformly regulate the internal temperature of the screen changer and ensure a suitable temperature environment for material processing. A trapezoidal spacer 230 is provided on the same side of the slide plate 200, with its inclined side fitting against the discharge valve 210 and its height lower than the slide plate cold / hot pipes 201. This stabilizes the discharge valve 210 while avoiding interference, and its bolted connection to the slide plate 200 facilitates adjustment and replacement. The slide plate temperature sensor 270 installed inside the slide plate 200 can accurately monitor the temperature of the slide plate 200 in real time. Combined with the slide plate cold / hot pipes 201, it enables precise temperature control of the slide plate 200, thereby ensuring that materials are diverted and filtered at ideal temperatures, comprehensively improving the screen changer's performance and product quality.

[0058] See Figure 8 As shown, during operation, after the filter screen 250 is replaced, there is material loss at the screen trough and discharge channel 120, so air is likely to appear at the screen trough and discharge channel 120. Therefore, air should be vented. During venting, the hydraulic cylinder 500 continues to work, so that the perforated plate 240 moves from the screen changing position 600 to the venting position 700. At this time, the venting groove 242 just exposes the screen changer body 100, and the gas in the screen changer body 100 is discharged from the venting groove 242. When there is material flowing out of the venting groove 242, the surface gas is discharged cleanly. At this time, the hydraulic cylinder 500 works, so that the device enters the working position 800.

[0059] Specifically, the filters 250 on the two sets of perforated plates 240 need to be replaced one after another. When replacing the filters, after replacing the filters 250 on one set of perforated plates 240, the filters 250 on the other set of perforated plates 240 are replaced immediately to ensure the filtration quality of the filter replacement device.

[0060] Compared with the prior art, the beneficial effects of this utility model are as follows: the basic structure of the screen changer is a double-plate screen changer, and the shell is heated by heat transfer oil (heat medium), which can accurately control the internal temperature of the screen changer and avoid the impact of temperature fluctuations on fiber quality. The slide plate 200 is equipped with a discharge mechanism, and the discharge volume is adjusted by the discharge valve 210. The discharge mechanism discharges the deposited material and avoids the accumulation of static electricity that may cause ignition. The cold / hot pipes 201 of the slide plate, together with the corresponding temperature measuring points, control the temperature balance of the slide plate 200 to avoid decomposition and ignition caused by excessive temperature or product quality caused by excessively low temperature. The small holes of the slide plate 200 are processed into tapered holes to reduce the retention of material under pressure. The fixed plate of the hydraulic cylinder 500 is processed with cooling water channels to reduce temperature conduction. The equipment generates a lot of heat during operation. If the heat cannot be dissipated in time, it will affect the normal operation and service life of the equipment. The presence of cooling water channels effectively removes heat, ensuring that the hydraulic cylinder 500 and related components operate within a suitable temperature environment, extending the overall service life of the equipment and reducing maintenance costs. The screen changer is equipped with displacement sensors, which, through an electronic control system, control the solenoid valves of the hydraulic station, causing the slide plate 200 to perform timed micro-motion (bidirectional fixed-distance movement). This prevents material adhesion and retention, ensuring good material flow within the screen changer and guaranteeing continuous and stable production. Furthermore, this intelligent control method can be flexibly adjusted according to actual production conditions to adapt to different process requirements.

[0061] It will be understood by those skilled in the art that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A double-plate screen changing device based on lyocell fiber, characterized in that, include: The main body of the screen changer has a flow channel inside; A slide plate is disposed inside the diversion channel and is slidably connected to the diversion channel. The slide plate is provided with a perforated plate, and an exhaust groove is provided on the side of the perforated plate. The slide plate and the top of the screen changer body are provided with exhaust valve mounting holes on the same side. There are two sets of exhaust valve mounting holes, and the lengths of the two sets of exhaust valve mounting holes are different. A discharge valve is installed inside the discharge valve mounting hole, and a material receiving trough is provided at the end of the discharge valve away from the main body of the screen changer.

2. The double-plate screen changing device based on lyocell fiber according to claim 1, characterized in that, The bottom of the screen changer body is provided with double-headed bolt positioning posts. A connecting plate is provided at the end of the double-headed bolt positioning posts away from the screen changer body. Cooling pipes are provided on the side of the connecting plate, and a through hole is provided on the upper surface of the connecting plate. Two oil cylinders are arranged side by side on the lower surface of the connecting plate. A piston rod is provided inside the oil cylinder, and the piston rod passes through the through hole.

3. The double-plate screen changing device based on lyocell fiber according to claim 2, characterized in that, Two sets of displacement sensors are fixedly connected to one side of the connecting plate. The two sets of displacement sensors are arranged parallel to the two hydraulic cylinders respectively. The displacement sensor has a displacement sensor telescopic rod inside, and the end of the displacement sensor telescopic rod is fastened to the displacement sensor fixing component with bolts.

4. The double-plate screen changing device based on lyocell fiber according to claim 3, characterized in that, Two sets of sliding plates are provided, and the two sets of sliding plates have the same structure and are horizontally arranged with the two hydraulic cylinders respectively. A piston rod fixing component is fixedly connected to the side of the sliding plate near the double-headed bolt positioning column. The displacement sensor fixing component is fixedly connected to the piston rod fixing component, and the piston rod fixing component is connected to the top of the piston rod. The sliding plates are arranged inside the diversion channel to divide the diversion channel into a feeding channel and a discharging channel. A U-shaped sliding plate cold / hot pipe is opened inside the sliding plate. A filter screen is provided on the upper surface of the porous plate, and a pressure ring is provided on the upper surface of the filter screen. The radius of the pressure ring is the same as that of the filter screen.

5. The double-plate screen changing device based on lyocell fiber according to claim 1, characterized in that, The perforated plate has several tapered holes.

6. The double-plate screen changing device based on lyocell fiber according to claim 1, characterized in that, The main body of the screen changer includes an inlet plate and an outlet plate, with upper and lower spacers provided between the inlet plate and the outlet plate. The inlet plate, the outlet plate, and the spacers are fastened together by bolts.

7. The double-plate screen changing device based on lyocell fiber according to claim 6, characterized in that, The inlet plate and outlet plate are respectively provided with two sets of heat medium heating pipes, and the two sets of heating pipes are symmetrically distributed along the symmetry axis of the slide plate.

8. The double-plate screen changing device based on lyocell fiber according to claim 1, characterized in that, A pad is provided on the same side of the slide plate as the drain valve mounting hole. The pad is trapezoidal and its inclined side is in contact with the drain valve. The height of the pad is lower than the height of the cold / hot pipe of the slide plate. The slide plate and the pad are bolted together.

9. The double-plate screen changing device based on lyocell fiber according to claim 1, characterized in that, The skateboard is equipped with a skateboard temperature sensor.

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