Paper machine and its collecting device

Abstract

The application provides a papermaking machine and a collecting device thereof, characterized in that the collecting device comprises a collecting assembly and a sliding rail, the collecting assembly is in sliding connection with the sliding rail, the collecting device is provided with a collecting area, the collecting assembly can slide into or slide out of the collecting area along the sliding rail, the collecting assembly comprises an outer cover, and when the collecting assembly is located in the collecting area, free matters in the collecting area can be adsorbed on the outer cover. The papermaking machine and the collecting device thereof provided by the application adsorb free matters in the collecting area by the outer cover of the collecting assembly, so that the free matters are prevented from gathering into particles and affecting normal operation of the papermaking machine, the reliability of papermaking machine production is improved, and the cost of equipment and energy consumption is reduced.

Description

Technical Field

[0001] This invention relates to the technical field of collection devices, and more specifically to a papermaking machine and its collection device. Background Technology

[0002] Pulp, fillers, and starch are among the most important raw materials in papermaking. During the paper machine production process, pulp, starch, fillers, and additives are widely used in the wet end process. These raw materials are dewatered by various suction devices in the wire pressing section, transforming them into finished paper. Currently, the general process in the wire pressing section involves evenly distributing white water containing approximately 2% pulp onto the wire mesh through a headbox. The moisture content of the pulp on the wire mesh is further reduced by the action of equipment such as vacuum boxes, vacuum panels, and vacuum rollers. Due to the unique high temperature and suction environment of the wire pressing section, the wire mesh environment contains a large amount of water vapor, which contains a large amount of pulp and paper fibers, starch particles, fillers, and additives. This water vapor containing a large amount of substances easily adheres to the machine frame or other equipment. The condensed particles in the water vapor accumulate over time and grow larger, potentially falling onto the running wire mesh and causing paper breaks in the paper machine's wire section. Therefore, an air supply and exhaust system is installed in the wire section to extract and remove moisture from the wire section, reducing particle condensation. However, due to the special environment and location of the lamination area in the wire section, the exhaust and air supply systems equipped in general paper machines cannot extract moisture from the lamination area in time, resulting in large-scale particle accumulation on the frame in the lamination area, becoming a major hidden danger affecting the normal operation of the paper machine. There are two common methods for dealing with pulp accumulation on the frame in the lamination area. One is to manually clean the surface periodically with a handheld water spray bar, but the operation cycle is long, about 30 minutes each time, and it needs to be cleaned three times a day on average. In addition, the spray water dripping can cause paper defects such as water droplet marks. The other is to study how to add an air supply and exhaust system to the lamination area, but this involves the problem of wire fabric air pressure balance, which requires a lot of cost and time, and cannot quickly and effectively solve the above problems. Summary of the Invention

[0003] One embodiment of this application provides a collection device, which includes a collection component and a slide rail. The collection component is slidably connected to the slide rail. The collection device has a collection area. The collection component can slide into or out of the collection area along the slide rail. The collection component includes an outer cover. When the collection component is located in the collection area, the free matter in the collection area can be adsorbed onto the outer cover.

[0004] According to one embodiment of this application, the collecting device further includes a cable and a fixed pulley. One end of the cable is connected to the collecting component, and the other end passes through the fixed pulley. The cable is used to pull the collecting component to slide along the slide rail, and the fixed pulley is used to change the direction of the tension of the cable.

[0005] According to one embodiment of this application, the collecting component has a multi-segment structure, and the multi-segment collecting components are detachably connected by quick clamps. Each segment of the collecting component has a shackle at one end near the cable, and the cable is detachably connected to the shackle on the outermost side of the collecting component.

[0006] According to one embodiment of this application, the slide rail includes a loading and unloading section located outside the collection area. When the outermost segment of the multi-segment collection assembly slides to the loading and unloading section, the outermost segment of the collection assembly can be removed for cleaning. The cable is then detachably connected to the shackle on the outermost side of the collection assembly located on the slide rail.

[0007] According to one embodiment of this application, the collecting component includes a connecting frame, an outer cover is disposed on the connecting frame, and a roller is installed on the side of the connecting frame opposite to the outer cover, the roller being slidably connected to the slide rail.

[0008] According to one embodiment of this application, the slide rail includes a first groove and a second groove on both sides, and the roller includes a first roller and a second roller, wherein the first roller and the second roller are slidably connected to the first groove and the second groove, respectively.

[0009] According to one embodiment of this application, the cross-section of the first groove is triangular, the cross-section of the second groove is square, and the cross-sectional shapes of the first roller and the second roller are respectively adapted to the cross-sectional shapes of the first groove and the second groove.

[0010] According to one embodiment of this application, the collecting device further includes a mounting bracket, the slide rail is fixedly mounted on the mounting bracket, the mounting bracket is provided with a steam pipe, the steam pipe has multiple holes, external steam can enter the mounting bracket through the steam pipe and the holes, and one end of the mounting bracket is provided with a drain hole, the drain hole is used to discharge the condensate formed by the condensation of steam.

[0011] According to one embodiment of this application, the collection device further includes two columns, a support beam is connected between the two columns, the mounting bracket is fixed on the support beam, and the collection area is located between the columns.

[0012] Another aspect of this application provides a papermaking machine, which includes the collection device described in any of the above embodiments.

[0013] This application provides a paper machine and its collection device, which uses the outer cover of the collection component to adsorb free matter in the collection area, thereby preventing free matter from agglomerating into particles and affecting the normal operation of the paper machine, improving the reliability of paper machine production, and reducing equipment and energy costs. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the collection device of this application;

[0016] Figure 2 yes Figure 1 A cross-sectional view of the mounting bracket, slide rail, and collection components of the collection device shown;

[0017] Figure 3 yes Figure 1 A schematic diagram of the structure of the outer casing and connecting frame of the collection device shown;

[0018] Figure 4 yes Figure 3 A cross-sectional view of the outer casing and connecting frame shown;

[0019] Figure 5 yes Figure 1 A schematic diagram of the slide rail structure of the collection device shown;

[0020] Figure 6 yes Figure 5 A cross-sectional view of the slide rail shown.

[0021] Figure 7 yes Figure 1 A schematic diagram of the mounting bracket for the collection device shown;

[0022] Figure 8 yes Figure 1 A partial structural schematic diagram of the collection device shown.

[0023] Figure 9 This is a partial structural schematic diagram of an embodiment of the papermaking machine of this application. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the invention. Similarly, the following embodiments are only some, not all, embodiments of the present invention, and all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] The terms "first," "second," and "third" used in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movement of components in a specific posture (as shown in the figures). If the specific posture changes, the directional indication will also change accordingly. The terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.

[0026] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] This application provides a collection device 10, which can be referred to in conjunction with the embodiments. Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of an embodiment of the collection device of this application; Figure 2 yes Figure 1 The diagram shows a cross-sectional view of the mounting bracket, slide rail, and collection assembly of the collection device. The collection device 10 includes a collection assembly 110 and a slide rail 120. The collection assembly 110 is slidably connected to the slide rail 120. The collection device 10 has a collection area 101. The collection assembly 110 can slide into or out of the collection area 101 along the slide rail 120. The collection assembly 110 includes an outer cover 111. When the collection assembly 110 is located in the collection area 101, the free matter in the collection area 101 can be adsorbed onto the outer cover 111.

[0028] Optionally, the outer surface of the outer cover 111 has a high roughness, so that particulate matter in the surrounding water vapor can be more easily adsorbed onto the outer surface of the outer cover 111, thereby achieving a collection function. Further, the roughness of the outer surface of the outer cover 111 can be increased through special treatments such as etching or cutting. The outer cover 111 can be made of stainless steel.

[0029] Optionally, the slide rail 120 can be set horizontally, and the collection component 110 can slide into or out of the collection area 101 in the horizontal direction along the slide rail 120.

[0030] Optionally, the collection device 10 also includes a cable 130 and a fixed pulley 140. One end of the cable 130 is connected to the collection assembly 110, and the other end passes through the fixed pulley 140. The cable 130 is used to pull the collection assembly 110 to slide along the slide rail 120, and the fixed pulley 140 is used to change the direction of the tension of the cable 130.

[0031] Furthermore, the cable 130 can be a steel cable hinge for manual pulling, or a steel cable for use with an electric winch. In other embodiments, the cable 130 may also be made of different materials depending on the choice of the pulling system used in actual operation.

[0032] Optionally, the collection component 110 may be connected to the pull cable 130 at only one end. The collection component 110 can be pulled away from the collection area 101 by the pull cable 130 for cleaning. After cleaning, the collection component 110 can be manually pushed back into the collection area 101. In some other embodiments, the collection component 110 may also be connected to different pull cables 130 at both ends. One pull cable 130 is used to pull the collection component 110 away from the collection area 101 for cleaning, and the other pull cable is used to pull the collection component 110 back into the collection area 101 to adsorb free matter.

[0033] Optionally, the collection assembly 110 has a multi-segment structure, and the multiple collection assemblies 110 are detachably connected by quick clamps (not shown in the figure). Each collection assembly 110 has a shackle 113 at one end near the cable 130, and the cable 130 is detachably connected to the outermost shackle 113 of the collection assembly 110.

[0034] Furthermore, the collecting component 110 can be a three-segment structure, with each segment of the collecting component 110 having a length of 3m. In other embodiments, the collecting component 110 can also be a single-segment or multi-segment structure, with the number of segments being 1, 2, 4, 5, 6, 8, etc.

[0035] Optionally, please refer to the following as well. Figure 3 and Figure 4 , Figure 3 yes Figure 1 A schematic diagram of the structure of the outer casing and connecting frame of the collection device shown; Figure 4 yes Figure 3 The diagram shows a cross-sectional view of the outer cover and the connecting frame. The collecting assembly 110 includes a connecting frame 112, an outer cover 111 is mounted on the connecting frame 112, and a roller 115 is mounted on the side of the connecting frame 112 opposite to the outer cover 111. The roller 115 is slidably connected to the slide rail 120.

[0036] Furthermore, the connecting frame 112 is in the shape of a groove, and the roller 115 is installed inside the groove formed by the connecting frame 112. The outer cover 111 can also be in the shape of a groove, and the outer cover 111 is aligned with the groove direction of the connecting frame 112. Furthermore, the edge of the outer cover 111 can be bent inward to reduce the entry of free matter or moisture into the groove formed by the outer cover 111.

[0037] Optionally, a roller sleeve 1121 is fixed inside the connecting frame 112, and the collecting assembly 110 also includes a roller shaft 114, which passes through the roller 115 and is inserted into the roller sleeve 1121, so that the roller 115 is installed on the connecting frame 112.

[0038] Furthermore, a through hole 112101 is provided on the side wall of the roller sleeve 1121. The through hole 112101 is used to install a set screw to fix the roller shaft 114.

[0039] Optionally, the edge of the collecting assembly 110 is provided with a fixing hole 1101 for installing a shackle 113. Specifically, the fixing hole 1101 can be a threaded hole. Further, the fixing hole 1101 can be located at the middle of the upper side wall of the outer cover 111 and the connecting frame 112, and the shackle 113 can pass through the fixing hole 1101 to facilitate smooth pulling of the collecting assembly 110. In some other embodiments, the fixing hole 1101 can also be used to install a rotating lifting ring to facilitate the loading and unloading of the collecting assembly 110.

[0040] Furthermore, the quick clamp can be a general-purpose hardware component. The quick clamp can be welded to the middle of the upper and lower side walls of the collection assembly 110 and located in front of the shackle 113 to facilitate the disassembly and connection between multiple collection assemblies 110 and avoid the connection process being obstructed by the shackle 113.

[0041] In actual production, considering the installation accuracy and the length limitations of the collecting component 110, if the collecting component 110 is too long (e.g., exceeding 3m), it will cause the collecting component 110 to sag naturally. Insufficient contact between the slide rail 120 and the roller 115 can cause the collecting component 110 to jam and become difficult to pull out. Secondly, due to installation accuracy issues, if the slide rail 120 cannot be guaranteed to maintain equidistant distance from the upper and lower rollers 115 on the horizontal plane, it will also cause the pulling to jam. The multi-segment collecting component 110 adopts a detachable design, eliminating the need to disassemble the entire collecting component 110 for cleaning. When a single segment of the collecting component 110 slides out of the collecting area 101, it can be disassembled for cleaning, and the pull cable 130 is then connected to the shackle 113 of the next segment of the collecting component 110. In other embodiments, the collecting component 110 can also be a single-piece design, meaning the collecting component 110 is a single-piece structure. In this case, the collecting component 110 can only be disassembled for cleaning when it slides out of the collecting area 101 as a whole.

[0042] Optionally, the fixed pulley 140 can be fixed to the wall, and the height of the fixed pulley 140 is the same as the height of the shackle 113, so that the cable 130 between the fixed pulley 140 and the shackle 113 remains horizontal, and the direction of the cable 130 passing through the fixed pulley 140 turns vertically downward, so that when the cable 130 is pulled in the vertical direction, the collecting assembly 110 can slide along the slide rail 120 in the horizontal direction.

[0043] Optionally, such as Figure 1 As shown, the slide rail 120 includes a loading and unloading section 121 located outside the collection area 101. When the outermost section of the multi-section collection assembly 110 slides to the loading and unloading section 121, the outermost section of the collection assembly 110 can be removed for cleaning. The cable 130 is then detachably connected to the shackle 113 of the outermost section of the collection assembly 110 located on the slide rail 120.

[0044] Furthermore, the length of each segment of the multi-segment collection assembly 110 can be consistent with the length of the loading / unloading segment 121, so that the single-segment collection assembly 110 sliding out of the collection area 101 can be precisely placed on the loading / unloading segment 121, facilitating the loading and unloading of the single-segment collection assembly 110 and preventing the single-segment collection assembly 110 from naturally sagging. In some other embodiments, the length of the loading / unloading segment 121 may also be different from the length of each segment of the collection assembly 110, such as being longer or shorter, which will not be described in detail here.

[0045] Optionally, please refer to the following as well. Figure 5 and Figure 6 , Figure 5 yes Figure 1 A schematic diagram of the slide rail structure of the collection device shown; Figure 6 yes Figure 5 The diagram shows a cross-sectional view of the slide rail. The slide rail 120 has a first groove 1201 and a second groove 1202 on both sides. The roller 115 includes a first roller 1151 and a second roller 1152, which are symmetrically distributed on both sides of the slide rail 120 and slidably connected to the first groove 1201 and the second groove 1202, respectively. Furthermore, the first roller 1151 and the second roller 1152 are kept on the same horizontal plane to ensure stable and reliable sliding.

[0046] Optionally, the first groove 1201 has a triangular cross-section, and the second groove 1202 has a square cross-section. The cross-sectional shapes of the first roller 1151 and the second roller 1152 are adapted to the cross-sectional shapes of the first groove 1201 and the second groove 1202, respectively. The triangular cross-section of the first groove 1201 has a guiding function, ensuring that the collecting assembly 110 remains on the same straight line during sliding. In other embodiments, the cross-sectional shapes of the first groove 1201 and the second groove 1202 may also be semi-circular or trapezoidal, etc.

[0047] Optionally, please refer to Figure 7 , Figure 7 yes Figure 1 The diagram shows the structural structure of the mounting bracket for the collection device. The collection device 10 also includes a mounting bracket 150, with a slide rail 120 fixedly mounted on it. A steam pipe 151 is provided inside the mounting bracket 150, and multiple evenly distributed holes (not shown in the figure) are opened on the steam pipe 151. External steam can enter the mounting bracket 150 through the steam pipe 151 and the holes. A drain hole 1501 is provided at one end of the mounting bracket 150 to drain condensate formed by the condensation of steam. In some other embodiments, a drain pipe can also be installed at one end of the mounting bracket 150 to drain condensate. Given that the collection device 10 is located near the edge of the paper machine frame in actual production, and the overall heating and cooling rates are not consistent with the frame before and after machine startup and shutdown, it is easy for surrounding moisture to condense and drip onto the mounting bracket 150 of the collection device 10, leading to paper breakage and machine shutdown. Therefore, it is necessary to use steam to heat the mounting bracket 150.

[0048] Furthermore, the steam pipe 151 includes an inlet pipe 1511 and an outlet pipe 1512. The inlet pipe 1511 and the outlet pipe 1512 are welded to the upper and lower sides inside the mounting bracket 150, and one end of the inlet pipe 1511 and the outlet pipe 1512 are connected to form a "U-shaped" steam pipe 151. Specifically, the inlet pipe 1511 can be located above the outlet pipe 1512. Steam can enter the mounting bracket 150 from the inlet pipe 1511, some steam can be discharged from the outlet pipe 1512, and another part of the steam can be discharged from the holes on the steam pipe 151 into the mounting bracket 150, where it will condense into water and be discharged from the drain hole 1501.

[0049] Optionally, considering the issue of condensation when the collection component 110 as a whole is exposed to cold, it can be kept at the same temperature as the surrounding environment by immersing or rinsing it in warm water before and after installation. After installation, the surrounding environment will continuously heat up, bringing the collection component 110 and the mounting bracket 150 to the same temperature as the surrounding environment, allowing the steam supply to be manually or automatically shut off.

[0050] Optionally, a row of horizontally evenly distributed countersunk holes 1203 are provided in the middle of the slide rail 120. The countersunk holes 1203 are T-shaped. The slide rail 120 is fixed to the mounting bracket 150 at the rear by internal hex bolts passing through the countersunk holes 1203.

[0051] Optionally, the rollers 115 and the connecting bracket 112 can be made of the same material as the outer cover 111 to improve heat conduction efficiency and increase the heating efficiency of the collection component 110. Specifically, the rollers 115 and the connecting bracket 112 can be made of stainless steel.

[0052] Optionally, such as Figure 2 As shown, a guide plate 152 is provided on the side of the mounting bracket 150 facing the connecting frame 112. The guide plate 152 is located below the roller 115. The end of the guide plate 152 facing the connecting frame 112 is slightly raised to receive the water droplets condensed at the upper roller 115 and guide the water droplets to flow out at both ends, preventing the paper machine from breaking due to the water droplets condensing and falling.

[0053] Optionally, please refer to Figure 8 , Figure 8 yes Figure 1 The diagram shows a partial structural schematic of the collection device. The collection device 10 also includes two columns 160, with a support beam 170 connecting the two columns 160. A mounting bracket 150 is fixed to the support beam 170, and the collection area 101 is located between the two columns 160. Furthermore, the total length of the collection assembly 110 can be the same as the length of the collection area 101, and the length of the guide plate 152 corresponds to the length of the collection assembly 110.

[0054] Another embodiment of this application provides a papermaking machine; please refer to [link to relevant documentation]. Figure 9 , Figure 9 This is a partial structural schematic diagram of an embodiment of the papermaking machine of this application. The papermaking machine includes the collection device 10 in the above embodiment. Furthermore, the papermaking machine also includes a composite zone frame 20. Free matter in the wire composite zone easily accumulates at the composite zone frame 20, forming particulate matter that falls and affects the operational stability of the papermaking machine. Therefore, the collection area 101 in this application is located below the composite zone frame 20, so that the outer cover 111 can adsorb free matter in the wire composite zone.

[0055] The paper machine and its collection device 10 provided in this embodiment utilize the outer casing 111 of the collection component 110 to adsorb free matter in the collection area 101, preventing the free matter from agglomerating into particles that affect the normal operation of the paper machine, improving the reliability of paper machine production, and reducing equipment and energy costs. The collection device 10 basically solves the problem that fiber-containing moisture on the wire section floats above the frame 20 in the composite zone with the airflow, and that as the fiber-containing moisture accumulates, some fibers gradually condense into particles. Currently, after the collection device 10 is used on the machine, paper defects caused by the condensation and falling of particles on the wire section have decreased by 98.2% compared to before, and there have been no paper breaks caused by the condensation and falling of large pulp clumps and water droplets. It breaks the traditional high-energy-consuming single-selection method of using high-power suction devices and has achieved good working results in actual production.

[0056] The above description is only a part of the embodiments of the present invention and does not limit the scope of protection of the present invention. Any equivalent device or equivalent process transformation made based on the content of the present invention specification and drawings, or direct or indirect application in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A collection device, characterized in that, The collecting device is used in a paper machine, which also includes a composite zone frame. The collecting device includes a collecting component and a slide rail. The collecting component is slidably connected to the slide rail. The collecting device has a collecting area located under the composite zone frame. The collecting component can slide into or out of the collecting area along the slide rail. The collecting component includes an outer cover. When the collecting component is located in the collecting area, the free matter in the collecting area can be adsorbed onto the outer cover. The collection device also includes a mounting bracket, the slide rail is fixedly mounted on the mounting bracket, the mounting bracket is provided with a steam pipe, the steam pipe has multiple holes, external steam can enter the mounting bracket through the steam pipe and the holes, and one end of the mounting bracket is provided with a drain hole, the drain hole is used to discharge the condensate water formed by the cooling of steam.

2. The collecting device according to claim 1, characterized in that, The collecting device also includes a cable and a fixed pulley. One end of the cable is connected to the collecting assembly, and the other end passes through the fixed pulley. The cable is used to pull the collecting assembly to slide along the slide rail, and the fixed pulley is used to change the direction of the tension of the cable.

3. The collecting device according to claim 2, characterized in that, The collection assembly has a multi-segment structure, and the multiple collection assemblies are detachably connected by quick clamps. Each collection assembly has a shackle at the end near the cable, and the cable is detachably connected to the shackle on the outermost side of the collection assembly.

4. The collecting device according to claim 3, characterized in that, The slide rail includes a loading and unloading section located outside the collection area. When the outermost segment of the multi-segment collection assembly slides to the loading and unloading section, the outermost segment of the collection assembly can be removed for cleaning. The cable is then detachably connected to the shackle on the outermost segment of the collection assembly located on the slide rail.

5. The collecting device according to claim 1, characterized in that, The collecting assembly includes a connecting frame, an outer cover is mounted on the connecting frame, and a roller is installed on the side of the connecting frame opposite to the outer cover. The roller is slidably connected to the slide rail.

6. The collecting device according to claim 5, characterized in that, The slide rail has a first groove and a second groove on both sides, and the roller has a first roller and a second roller, which are slidably connected to the first groove and the second groove, respectively.

7. The collecting device according to claim 6, characterized in that, The first groove has a triangular cross-section, the second groove has a square cross-section, and the cross-sectional shapes of the first roller and the second roller are respectively adapted to the cross-sectional shapes of the first groove and the second groove.

8. The collecting device according to claim 7, characterized in that, The collection device also includes two columns, with a support beam connecting the two columns. The mounting bracket is fixed to the support beam, and the collection area is located between the columns.

9. A papermaking machine, characterized in that, Includes the collection device as described in any one of claims 1 to 8.

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