Fog recovery device for wet part of fourdrinier machine

Abstract

The utility model provides a fourdrinier paper machine wet part water mist recovery device, which belongs to the field of fourdrinier paper machine water mist treatment and comprises a recovery box, a draught fan is mounted on the recovery box, and a liquid discharge pipe is mounted at the bottom of the recovery box; a recovery assembly; a hose is installed on the filter box, a connecting pipe is connected to the hose, an adjustable support is installed on the recycling box, and a detachable air suction cover is installed at the bottom of the support. By means of reasonable structural design and component combination, adverse effects of water mist and fiber particles on the fan are effectively avoided, the service life of the fan is prolonged, the working efficiency of the fan is improved, shaking is beneficial to further promoting separation of the fiber particles and the water mist, the water mist attached to the fiber particles can be separated more quickly, and the service life of the fan is prolonged. Meanwhile, the fiber particles can be uniformly distributed in the filter box, so that the filter screen is prevented from being locally blocked, and the filtering effect and ventilation performance of the filter box are ensured.

Description

Technical Field

[0001] This utility model relates to the field of water mist treatment technology for long-wire paper machines, and in particular to a water mist recovery device for the wet end of a long-wire paper machine. Background Technology

[0002] Papermaking involves beating raw materials into pulp, then initially dewatering them on the wire mesh to form a wet paper sheet. This sheet is then further dewatered by pressing and finally dried to form paper. During production, a large amount of fiber is carried by moisture, forming water mist. This water mist not only affects the lifespan of equipment and the health of workers, but it can also condense and drip, falling onto the wire mesh and causing pits on the paper surface. These pits can then create defects in the paper during subsequent dewatering and drying processes, reducing product quality. Furthermore, the large amount of dispersed fiber particles also leads to resource waste.

[0003] The prior art, disclosed in CN217068133U, describes a wet-end water mist recovery device for a fourdrinier paper machine. This device includes several suction fans installed inside the mist suction pipe. However, the water mist contains a significant amount of fiber, and the fiber particles and water mist can easily affect the suction fans. Over time, this can lead to blockage of the fan's internal channels, affecting its ventilation volume and operating efficiency. Furthermore, the friction and collision of fiber particles inside the fan accelerates the wear of fan components and shortens its service life. Therefore, this application proposes a wet-end water mist recovery device for a fourdrinier paper machine. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a wet end water mist recovery device for a fourdrinier paper machine.

[0005] An embodiment of this utility model provides a wet end water mist recovery device for a fourdrinier paper machine, comprising:

[0006] A recycling bin, on which a fan is installed, and at the bottom of the recycling bin a drain pipe is installed;

[0007] A recycling assembly includes a mounting frame installed inside a recycling bin and capable of reciprocating shaking. A removable filter box is installed inside the mounting frame. A filter screen is installed at the bottom of the filter box. A flexible hose is installed on the filter box, and a connecting pipe is connected to the flexible hose. An adjustable bracket is installed on the recycling bin, and a removable suction hood is installed at the bottom of the bracket.

[0008] Furthermore, the bottom of the recycling bin is conical, the drain pipe is installed at the bottom of the conical shape, and a control valve is installed on the drain pipe.

[0009] Furthermore, the recycling bin is equipped with two fixing ears, which are fixed to the recycling bin by welding.

[0010] Furthermore, two guide rods are fixed on both sides of the mounting frame. The guide rods pass through the recycling bin and are slidably connected to it. A connecting plate is fixed on the two guide rods at the same end. A spring is fixed on the connecting plate and the recycling bin. A wheel frame is mounted on the connecting plate. A roller is mounted on the wheel frame. An mounting plate is mounted on the recycling bin. A motor is mounted on the mounting plate. A cam is fixed on the output end of the motor. The cam abuts against the roller.

[0011] Furthermore, the bracket is fixed to the recycling bin by a first bolt, and the suction hood is fixed to the bracket by a second bolt.

[0012] Furthermore, the filter box is provided with a first through hole, and the mounting frame is provided with a second through hole. When the filter box is placed in the mounting frame, the first through hole and the second through hole are positioned opposite each other. A slidably disposed locking pin is provided through the first through hole and the second through hole. A conical rubber block is fixed on the locking pin, and the conical rubber block abuts against the inner wall of the filter box.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention effectively solves the adverse effects of water mist and fiber particles on the fan through reasonable structural design and component combination, improves the service life and working efficiency of the fan, and the vibration helps to further promote the separation of fiber particles and water mist, so that the water mist attached to the fiber particles can be removed more quickly. At the same time, it can also make the fiber particles evenly distributed in the filter box, avoid local clogging of the filter screen, and ensure the filtration effect and ventilation performance of the filter box. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a wet end water mist recovery device for a fourdrinier paper machine as described in an embodiment of this utility model.

[0016] Figure 2 This is a rear view of a wet end water mist recovery device for a fourdrinier paper machine as described in an embodiment of this utility model.

[0017] Figure 3 This is a schematic diagram of the motor in a wet end water mist recovery device for a fourdrinier paper machine as described in this embodiment of the present invention.

[0018] Figure 4 This is a schematic diagram of the interior of the recovery box in a wet end water mist recovery device for a fourdrinier paper machine as described in this embodiment of the present invention.

[0019] Figure 5 This is a schematic diagram of the mounting frame in a wet end water mist recovery device for a fourdrinier paper machine as described in an embodiment of this utility model.

[0020] In the above attached diagram: 1. Recycling box, 2. Fixing ear, 3. Hose, 4. Connecting pipe, 5. Suction hood, 6. Bracket, 7. Drain pipe, 8. Mounting plate, 9. Motor, 10. Cam, 11. Roller, 12. Connecting plate, 13. Spring, 14. Guide rod, 15. Wheel frame, 16. Mounting frame, 17. Filter box, 18. Filter screen, 19. First through hole, 20. Locking pin, 21. Conical rubber block, 22. Second through hole, 23. Fan. Detailed Implementation

[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0022] like Figures 1-5 As shown, this utility model embodiment proposes a wet end water mist recovery device for a fourdrinier paper machine, comprising:

[0023] The device mainly includes a recycling bin 1, which is equipped with a cover to facilitate the operation and maintenance of the internal components. Two fixing ears 2 are installed on the recycling bin 1, and these ears are securely welded to the bin. Thus, the fixing ears 2 can be stably fixed to the corresponding frame (not shown in the figure) using fixing bolts, thereby achieving safe and reliable installation of the recycling bin 1 and ensuring the stability of the entire device during operation.

[0024] A blower 23 is installed on the recycling bin 1, serving as the power source for the entire recycling device and providing power for the intake of water mist and fiber particles. A drain pipe 7 is installed at the bottom of the recycling bin 1, which has a conical bottom shape. A control valve is installed on the drain pipe 7. The conical bottom design facilitates liquid collection, and the control valve allows for easy control of the discharge of the recycled liquid, facilitating subsequent processing and reuse.

[0025] The recycling assembly is the core component of this device. The recycling assembly includes a mounting frame 16 installed inside the recycling bin 1 and capable of reciprocating vibration. Two guide rods 14 are fixed to both sides of the mounting frame 16, passing through and slidably connecting to the recycling bin 1. This design ensures the stability of the mounting frame 16 during reciprocating vibration. A connecting plate 12 is fixed to the two guide rods 14 at the same end. A spring 13 is fixed to the connecting plate 12 and the recycling bin 1, providing elastic restoring force for the reciprocating vibration of the mounting frame 16. A wheel frame 15 is mounted on the connecting plate 12, and rollers 11 are mounted on the wheel frame 15. A mounting plate 8 is mounted on the recycling bin 1, and a motor 9 is mounted on the mounting plate 8. A cam 10 is fixed to the output end of the motor 9, and the cam 10 abuts against the rollers 11.

[0026] When the motor 9 starts, the cam 10 rotates, and through the interaction with the roller 11 and the spring 13, it pushes the connecting plate 12 and the mounting frame 16 to reciprocate, thereby realizing the shaking function of the mounting frame 16, which helps to separate fiber particles from water mist and distribute fiber particles in the filter box 17.

[0027] A detachable filter box 17 is installed inside the mounting frame 16. The upper end of the mounting frame 16 has a stepped U-shaped groove. A first through hole 19 passes through the filter box 17, and a second through hole 22 passes through the mounting frame 16. When the filter box 17 is placed inside the mounting frame 16, the first through hole 19 and the second through hole 22 are positioned opposite each other. Sliding locking pins 20 pass through the first through hole 19 and the second through hole 22, and a conical rubber block 21 is fixed to the locking pin 20. The conical rubber block 21 abuts against the inner wall of the filter box 17, utilizing its deformation capability to easily pass through the first through hole 19 and the second through hole 22. This design allows the filter box 17 to be securely installed inside the mounting frame 16, while also facilitating disassembly and replacement, thus improving the ease of maintenance of the device.

[0028] A filter screen 18 is installed at the bottom of the filter box 17. The filter screen 18 can effectively intercept fiber particles, allowing water mist to pass through and achieving preliminary separation of fibers and water mist. A cover is installed at the top of the filter box 17 to prevent fiber particles from escaping. A flexible hose 3 is installed on the filter box 17, and a connecting pipe 4 is connected to the flexible hose 3. The flexible hose 3 and the connecting pipe 4 are fitted with matching threaded connectors, and the two are connected by the threaded connectors. This connection method is convenient and quick, and has good sealing performance, ensuring that water mist and fiber particles can smoothly enter the filter box 17.

[0029] An adjustable bracket 6 is installed on the recycling bin 1. The recycling bin 1 has multiple threaded grooves, and the bracket 6 is fixed to the recycling bin 1 by a first bolt, connecting to the threaded grooves at different heights. This allows for flexible adjustment of the bracket 6's height to adapt to different usage scenarios and needs. A detachable suction hood 5 is installed at the bottom of the bracket 6, and the suction hood 5 is fixed to the bracket 6 by a second bolt. This facilitates the installation, removal, and replacement of the suction hood 5, and also makes it convenient for cleaning and maintenance.

[0030] After installation, inspect all components of the device to ensure that the motor 9, fan 23 and other equipment can start normally, and that all connections are well sealed without loosening or leakage.

[0031] Simultaneously, motor 9 and fan 23 are started. Fan 23, as the power source for the entire recycling device, begins to operate, creating a negative pressure environment within recycling box 1. At this time, the suction hood 5, installed at the bottom of support 6, draws in water mist and fiber particles mixed in with it from the wet end of the four-wire paper machine under the negative pressure. The drawn-in water mist and fiber particles smoothly enter filter box 17 through hose 3 connected to filter box 17 and connecting pipe 4 connected to it via threaded joint. After entering filter box 17, the water mist and fiber particles first come into contact with filter screen 18 installed at the bottom of filter box 17. Filter screen 18 has a suitable pore size, which can effectively intercept fiber particles and allow water mist to pass through, thereby achieving initial separation of fiber and water mist. The separated fiber particles remain in filter box 17, while the water mist continues to move upward.

[0032] Meanwhile, after the motor 9 starts, the cam 10 fixed at its output end begins to rotate. The cam 10 abuts against the roller 11 mounted on the wheel frame 15 of the connecting plate 12. During rotation, the cam 10, through its interaction with the roller 11, combined with the elastic restoring force provided by the spring 13 fixed between the connecting plate 12 and the recycling box 1, pushes the connecting plate 12 and the mounting frame 16, which is installed in the recycling box 1 and has guide rods 14 fixed on both sides, to reciprocate, thus realizing the shaking function of the mounting frame 16. Since the filter box 17 is installed in the mounting frame 16, the shaking of the mounting frame 16 will cause the filter box 17 to shake as well. This shaking helps to further promote the separation of fiber particles and water mist, allowing the water mist attached to the fiber particles to detach more quickly. At the same time, it also allows the fiber particles to be evenly distributed in the filter box 17, avoiding local clogging of the filter screen 18 and ensuring the filtration effect and ventilation performance of the filter box 17.

[0033] The liquid separated by filter screen 18 collects at the conical bottom of the recovery tank 1. The conical bottom design facilitates natural liquid collection and discharge. Once a certain amount of liquid has accumulated in the recovery tank 1, the operator can easily control the discharge of the recovered liquid by controlling the control valve installed on the drain pipe 7, allowing the discharged liquid to be further processed and reused, thus achieving resource recovery and conservation.

[0034] After the device has been running for a period of time, the filter box 17 needs to be cleaned and replaced. Since the filter box 17 installed in the mounting frame 16 can be disassembled, the operator only needs to pull out the locking pin 20 that is slidably set on the first through hole 19 and the second through hole 22. At this time, the conical rubber block 21 fixed on the locking pin 20 no longer abuts against the inner wall of the filter box 17, the locking pin 20 disengages from the first through hole 19, the filter box 17 is no longer fixed, and the filter box 17 can be taken out from the mounting frame 16.

[0035] The stepped groove at the upper end of the mounting frame 16 ensures accurate positioning and secure installation of the filter box 17. After removing the filter box 17, clean the internal fiber particles and inspect and maintain the filter screen 18, replacing it promptly if damaged. After cleaning and maintenance, reinstall the filter box 17 into the mounting frame 16 using the same method to ensure the device continues to operate normally.

[0036] In addition, regular inspection and maintenance of other components of the device, such as motor 9, fan 23, spring 13, and roller 11, and timely replacement of worn or damaged parts, can ensure the long-term stable and efficient operation of the entire wet end water mist recovery device of the long-wire paper machine, providing a reliable guarantee for paper production.

[0037] This utility model effectively solves the adverse effects of water mist and fiber particles on the fan through reasonable structural design and component combination, improves the service life and working efficiency of the fan, and the vibration helps to further promote the separation of fiber particles and water mist, so that the water mist attached to the fiber particles can be removed more quickly. At the same time, it can also make the fiber particles evenly distributed in the filter box 17, avoid local clogging of the filter screen 18, and ensure the filtration effect and ventilation performance of the filter box 17.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A wet-end water mist recovery device for a fourdrinier paper machine, characterized in that, include: A recycling bin (1) is equipped with a fan (23) and a drain pipe (7) is installed at the bottom of the recycling bin (1). The recycling assembly includes a mounting frame (16) installed inside the recycling bin (1) and capable of reciprocating shaking. A removable filter box (17) is installed inside the mounting frame (16). A filter screen (18) is installed at the bottom of the filter box (17). A hose (3) is installed on the filter box (17). A connecting pipe (4) is connected to the hose (3). An adjustable bracket (6) is installed on the recycling bin (1). A removable suction hood (5) is installed at the bottom of the bracket (6).

2. The wet end water mist recovery device for a fourdrinier paper machine according to claim 1, characterized in that, in: The bottom of the recycling bin (1) is conical, the drain pipe (7) is installed at the bottom of the conical shape, and a control valve is installed on the drain pipe (7).

3. The wet end water mist recovery device for a fourdrinier paper machine according to claim 1, characterized in that, in: The recycling bin (1) is equipped with two fixing ears (2), which are fixed to the recycling bin (1) by welding.

4. A wet-end water mist recovery device for a fourdrinier paper machine according to claim 1, characterized in that, in: Two guide rods (14) are fixed on both sides of the mounting frame (16). The guide rods (14) pass through the recycling bin (1) and are slidably connected to it. A connecting plate (12) is fixed on the two guide rods (14) at the same end. A spring (13) is fixed on the connecting plate (12) and the recycling bin (1). A wheel frame (15) is installed on the connecting plate (12). A roller (11) is installed on the wheel frame (15). An mounting plate (8) is installed on the recycling bin (1). A motor (9) is installed on the mounting plate (8). A cam (10) is fixed at the output end of the motor (9). The cam (10) abuts against the roller (11).

5. A wet-end water mist recovery device for a fourdrinier paper machine according to claim 1, characterized in that, in: The bracket (6) is fixed to the recycling bin (1) by the first bolt, and the suction hood (5) is fixed to the bracket (6) by the second bolt.

6. A wet-end water mist recovery device for a fourdrinier paper machine according to claim 1, characterized in that, in: The filter box (17) is provided with a first through hole (19), and the mounting frame (16) is provided with a second through hole (22). When the filter box (17) is placed in the mounting frame (16), the first through hole (19) and the second through hole (22) are arranged opposite to each other. The first through hole (19) and the second through hole (22) are provided with sliding locking pins (20). A conical rubber block (21) is fixed on the locking pin (20), and the conical rubber block (21) abuts against the inner wall of the filter box (17).

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