A paper machine press roll dewatering device

Abstract

The utility model relates to papermaking technical field, specifically disclose a kind of paper machine press dewatering roller water collection device, including frame, upper press roll and lower press roll on the frame, and the press felt transmission between the upper press roll and the lower press roll, the outside of the lower press roll is provided with fairing shell, the top of the fairing shell is open to avoid press felt and upper press roll;The bottom of the fairing shell forms the flow guide portion of downward inclination;The inner wall surface of the fairing shell is equipped with splash-proof layer;The lowest place of the flow guide portion is connected with the water collection shell of half cylinder shell body structure, the vertical downward of the water collection shell bottom is equipped with flow guide pipe, the lower portion of the flow guide pipe is provided with water collecting tank;Through the three-face surrounding structure of fairing shell to lower press roll and built-in splash-proof layer, effectively solve the problem of press water lateral overflow and spatter in prior art, realize the efficient water collection of press dewatering process, significantly improve the safety and cleanliness of work environment.

Description

Technical Field

[0001] This utility model relates to the field of papermaking technology, and specifically discloses a water collection device for the press dewatering roller of a papermaking machine. Background Technology

[0002] In the press section of a paper machine, the wet paper sheet rests on the press blanket and is dewatered by the upper and lower press rolls. The pressed water mainly adheres to the surface of the lower press roll and is thrown off. In the prior art, such as the utility model patent with authorization announcement number CN222294558U, a scheme is disclosed that an inclined concave water collection plate is set under the press blanket. Although this scheme can collect some of the falling press water, it still has significant shortcomings: the concave water collection plate mainly covers the area below the lower press roll, and its axial ends are open, resulting in the inability to effectively intercept the water flow thrown off the axial ends of the lower press roll and the water flow along the roll surface to both ends, causing lateral overflow and polluting the surrounding environment; the inner wall of the concave water collection plate has a smooth surface, and when the high-speed falling or converging water flow impacts the plate surface, it is easy to splash, and some water droplets will still splash out of the water collection plate; there is a lack of an effective structure to suppress water splashing.

[0003] The aforementioned problems result in a slippery working environment, posing safety hazards and affecting workshop cleanliness. Therefore, there is an urgent need for a water collection device that can effectively prevent lateral overflow and splashing of pressing water. Utility Model Content

[0004] This utility model proposes a water collection device for the press dewatering roller of a paper machine. Through the special surrounding method of the guide shroud for the lower press roller, the setting of the guide part, the application of the anti-splash layer, and the cooperation of the water collection shell, guide pipe and water collection tank, the structural design effectively prevents the side overflow and splashing of press water, solves the problems existing in the prior art, and ensures the safety and cleanliness of the working environment.

[0005] This utility model is implemented as follows: a water collection device for a paper machine press dewatering roll includes a frame, an upper press roll and a lower press roll mounted on the frame, and a press blanket that is transmitted between the upper press roll and the lower press roll. A guide shroud is provided on the outer side of the lower press roll. The guide shroud has a semi-enclosed shell structure. The axial side walls and radial lower wall of the guide shroud together form an enclosure of the circumference of the lower press roll within a range greater than 180 degrees. The top of the guide shroud is open to avoid the press blanket and the upper press roll. The bottom of the guide shroud forms a downwardly inclined guide section. The inner wall of the guide shroud is provided with a splash-proof layer. The lowest point of the guide section is connected to a water collection shell with a semi-cylindrical shell structure. A guide pipe is provided vertically downward at the bottom of the water collection shell, and a water collection trough is provided below the guide pipe.

[0006] As a preferred embodiment of the paper machine press dewatering roller water collection device of this utility model, the inner surface of the guide cover is provided with a smooth coating, which is made of Teflon material.

[0007] As a preferred embodiment of the paper machine press dewatering roller water collection device of this utility model, the anti-splash layer is generally elongated and arranged in a downward inclined direction; the anti-splash layer is a rubber material layer with a rough surface, and the surface is provided with several downward inclined protrusions.

[0008] As a preferred embodiment of the paper machine press dewatering roller water collection device of this utility model, the top open area of ​​the guide cover is covered with a removable maintenance cover plate.

[0009] As a preferred embodiment of the paper machine press dewatering roller water collection device of this utility model, the outer wall surface of the guide cover is provided with reinforcing ribs.

[0010] As a preferred embodiment of the paper machine press dewatering roller water collection device of this utility model, the bottom of the guide shroud is provided with a support column that is fixedly connected to the machine frame.

[0011] In a preferred embodiment of the paper machine press dewatering roller water collection device of this utility model, the length of the guide cover along the axis of the lower press roller is not less than the working width of the roller surface of the lower press roller.

[0012] The beneficial effects of this utility model are:

[0013] 1. Through the special structural design of the guide cover and the application of the anti-splash layer, the water flow thrown out from both ends of the lower pressure roller and the water flow along the roller surface to both ends are effectively prevented from overflowing laterally. At the same time, the splashing caused by water flow impact is reduced, avoiding the pollution of the surrounding environment by the press water, ensuring the cleanliness and safety of the working environment, and reducing the safety hazards caused by the slippery ground.

[0014] 2. The combination of the flow guide cover, water collection shell, flow guide pipe and water collection tank enables effective collection and directional transportation of pressed water, ensuring that the pressed water can be collected and stored smoothly for subsequent processing.

[0015] 3. The removable inspection cover on the top of the flow guide cover facilitates the inspection, maintenance and cleaning of the inside of the water collection device by the staff, which improves the convenience and efficiency of equipment maintenance. In addition, the reinforcing ribs on the outer wall of the flow guide cover enhance its structural strength, enabling it to operate stably and reliably during operation and extending the service life of the water collection device. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 for Figure 1 Schematic diagram of the structure in section AA.

[0019] Figure 3 for Figure 2 An enlarged structural diagram of point B in the middle.

[0020] Figure 4 This is a cross-sectional structural diagram of the air guide cover of this utility model.

[0021] The markings in the diagram are: 1. Frame; 2. Upper pressure roller; 3. Lower pressure roller; 4. Pressing blanket; 5. Flow guide cover; 6. Splash shield; 7. Water collection shell; 8. Flow guide pipe; 9. Water collection trough; 10. Smooth coating; 11. Raised ridge; 12. Inspection cover plate; 13. Reinforcing rib; 14. Support column. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0023] Please see Figure 1-4 A paper machine press dewatering roller water collection device includes a frame 1, an upper press roller 2 and a lower press roller 3 mounted on the frame 1, and a press blanket 4 that is transmitted between the upper press roller 2 and the lower press roller 3. A flow guide shroud 5 is provided on the outer side of the lower press roller 3. The flow guide shroud 5 is a semi-enclosed shell structure. The axial side walls and the radial lower wall of the flow guide shroud 5 together form an enclosure of the circumference of the lower press roller 3 within a range greater than 180 degrees. The top of the flow guide shroud 5 is open to avoid the press blanket 4 and the upper press roller 2. The bottom of the flow guide shroud 5 forms a downwardly inclined flow guide section. The inner wall surface of the flow guide shroud 5 is provided with a splash-proof layer 6. The lowest point of the flow guide section is connected to a water collection shell 7 with a semi-cylindrical shell structure. A flow guide pipe 8 is provided vertically downward at the bottom of the water collection shell 7, and a water collection trough 9 is provided below the flow guide pipe 8.

[0024] In this embodiment: When the paper machine is working, the wet paper sheet is carried by the press blanket 4 and enters between the upper press roll 2 and the lower press roll 3. The upper press roll 2 and the lower press roll 3 squeeze each other to dewater the wet paper sheet. The squeezed water mainly adheres to the surface of the lower press roll 3. As the lower press roll 3 rotates, the water is thrown away from the lower press roll 3. At this time, the semi-enclosed guide cover 5 intercepts most of the thrown water flow and the water flow along the roll surface to both ends. The anti-splash layer 6 on the inner wall of the guide cover 5 reduces the splashing caused by the water flow impact. The intercepted water flow flows downward to the water collection shell 7 under the guidance of the guide part at the bottom of the guide cover 5, and then flows into the water collection tank 9 through the guide pipe 8 at the bottom of the water collection shell 7 for storage, thereby realizing the collection of press water.

[0025] As a technical optimization of this utility model, the inner surface of the flow guide cover 5 is provided with a smooth coating 10, which is made of Teflon material.

[0026] In this embodiment: by setting a smooth coating 10 (made of Teflon material), the frictional resistance between the water flow and the guide plate can be further reduced, allowing the water flow to flow more smoothly on the guide plate, reducing water stagnation and splashing on the guide plate, and improving the water collection efficiency and effect of the water collection device.

[0027] As a technical optimization of this utility model, the splash-proof layer 6 is generally elongated and arranged in a downward inclined direction; the splash-proof layer 6 is a rubber material layer with a rough surface, and the surface is provided with a number of downward inclined protrusions 11.

[0028] In this embodiment: the splash-proof layer 6 is made of rubber, which has good flexibility and wear resistance. Its surface is specially treated to make it rough to increase the friction with water droplets. Several protruding ridges 11 are evenly distributed on the surface of the splash-proof layer 6, and the protruding ridges 11 are long strips and are set in a downward inclined direction, which can effectively change the movement direction of the water droplets, so that the water droplets slide down the protruding ridges 11 to the bottom of the guide cover 5. The protruding ridges 11 and the splash-proof layer 6 are integrally formed, which ensures the firmness and stability of the connection between the two.

[0029] As a technical optimization of this utility model, the top open area of ​​the flow guide shroud 5 is covered with a removable maintenance cover plate 12.

[0030] In this embodiment, the detachable inspection cover 12 facilitates the inspection, maintenance and cleaning of the inside of the water collection device by the staff. Without affecting the normal operation of the water collection device, it is convenient to deal with possible faults and blockages inside the device in a timely manner, so as to ensure the long-term stable operation of the water collection device.

[0031] As a technical optimization of this utility model, the outer wall surface of the flow guide shroud 5 is provided with reinforcing ribs 13.

[0032] In this embodiment, by setting the reinforcing ribs 13, the structural strength and rigidity of the flow guide cover 5 are enhanced, making it less prone to deformation or damage when subjected to water flow impact and various external forces during operation, thus extending the service life of the flow guide cover 5 and ensuring the reliability of the water collection device.

[0033] As a technical optimization of this utility model, the bottom of the flow guide cover 5 is provided with a support column 14 that is fixedly connected to the frame 1.

[0034] In this embodiment, the installation stability of the flow guide shroud 5 is enhanced by the support column 14.

[0035] As a technical optimization of this utility model, the length of the guide cover 5 along the axial direction of the lower pressure roller 3 is not less than the working width of the roller surface of the lower pressure roller 3.

[0036] In this embodiment, the length of the guide cover 5 along the axis of the lower pressure roller 3 is not less than the working width of the roller surface of the lower pressure roller 3, ensuring that the guide cover 5 can completely cover the area where the lower pressure roller 3 may throw out water during operation, effectively preventing water from overflowing from both ends of the lower pressure roller 3, and fully realizing the function of preventing lateral overflow.

[0037] Working principle and usage process of this utility model:

[0038] The wet paper sheet is conveyed by the press blanket 4 to the space between the upper pressure roller 2 and the lower pressure roller 3; the upper pressure roller 2 and the lower pressure roller 3 press the wet paper sheet, squeezing out the water and adhering it to the surface of the lower pressure roller 3; the lower pressure roller 3 rotates, the surface water is thrown off, the guide cover 5 intercepts the water flow, and the inner wall anti-splash layer 6 inhibits water splashing; the intercepted water flow flows into the water collection shell 7 through the guide part at the bottom of the guide cover 5; the water flow in the water collection shell 7 enters the water collection tank 9 for storage through the guide pipe 8; when it is necessary to inspect, maintain or clean the water collection device, the inspection cover 12 on the top of the guide cover 5 can be removed to operate the inside of the device.

[0039] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", 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 utility model 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 utility model.

[0040] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A paper machine press dewatering roll water collection device, comprising a frame (1), an upper press roll (2) and a lower press roll (3) disposed on the frame (1), and a press blanket (4) conveyed between the upper press roll (2) and the lower press roll (3), characterized in that: A flow guide cover (5) is provided on the outer side of the lower pressure roller (3). The flow guide cover (5) is a semi-enclosed shell structure. The axial side walls and radial lower wall of the flow guide cover (5) together form an enclosure of the circumference of the lower pressure roller (3) within a range of more than 180 degrees. The top of the flow guide cover (5) is open to avoid the press blanket (4) and the upper pressure roller (2). The bottom of the flow guide cover (5) forms a downwardly inclined flow guide. The inner wall surface of the flow guide cover (5) is provided with a splash-proof layer (6). The lowest point of the flow guide is connected to a water collection shell (7) with a semi-cylindrical shell structure. A flow guide pipe (8) is provided vertically downward at the bottom of the water collection shell (7). A water collection trough (9) is provided below the flow guide pipe (8).

2. The water collection device for the press dewatering roller of a papermaking machine according to claim 1, characterized in that: The inner surface of the flow guide cover (5) is provided with a smooth coating (10), which is made of Teflon material.

3. The water collection device for the press dewatering roller of a papermaking machine according to claim 1, characterized in that: The splash-proof layer (6) is long and narrow, and is set in a downward direction. The splash-proof layer (6) is a rubber material layer with a rough surface, and has several downward convex ridges (11) on its surface.

4. The water collection device for the press dewatering roller of a papermaking machine according to claim 1, characterized in that: The top open area of ​​the flow guide shroud (5) is covered with a removable maintenance cover (12).

5. A paper machine press dewatering roller water collection device according to claim 1, characterized in that: The outer wall of the flow guide cover (5) is provided with reinforcing ribs (13).

6. The water collection device for the press dewatering roller of a papermaking machine according to claim 1, characterized in that: The bottom of the flow guide cover (5) is provided with a support column (14) that is fixed to the frame (1).

7. A paper machine press dewatering roller water collection device according to claim 1, characterized in that: The length of the guide cover (5) along the axis of the lower pressure roller (3) is not less than the working width of the roller surface of the lower pressure roller (3).

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