A dewatering device for duplex paper

Abstract

This utility model discloses a dewatering device for offset paper, belonging to the field of offset paper dewatering technology. A sliding bearing assembly is installed inside the chute. The sliding bearing assembly and the electric push rod are connected via a connector. Two sliding bearing assemblies are connected to a dewatering movable roller via a first connecting shaft. Two first limiting water-absorbing rings are fitted onto the dewatering movable roller. The dewatering operation is performed by limiting the workpiece through the dewatering movable roller and the first limiting water-absorbing rings. The limiting water-absorbing ring design allows for precise limiting of dewatering on the offset paper. Both limiting water-absorbing rings can tightly adhere to the offset paper, effectively absorbing excess water. This limiting design improves dewatering efficiency and ensures stable dewatering quality. A water storage tank can collect wastewater generated during dewatering. The wastewater flows into the water storage tank through the water-absorbing rings, avoiding environmental pollution and equipment damage caused by wastewater overflow. The drain port at the bottom of the water storage tank facilitates wastewater discharge and treatment, improving equipment cleanliness and maintenance convenience.

Description

Technical Field

[0001] This utility model relates to the field of dehydration technology for double-sided coated paper, and in particular to a dehydration device for double-sided coated paper. Background Technology

[0002] In the modern papermaking industry, the equipment and dewatering devices involved in the production of offset paper play a crucial role. Offset paper production primarily relies on the paper machine, the core piece of equipment whose function is to convert pulp into paper. A well-designed paper machine ensures the uniformity and quality of the paper. Furthermore, a series of auxiliary equipment, such as pulp preparation systems, white water recovery systems, and chemical addition systems, work together to ensure the smooth operation of the production process.

[0003] In the production process of offset paper, the dewatering unit plays an indispensable role. Its main function is to remove excess water from the pulp to achieve the required dryness of the paper. A typical dewatering unit includes a press section and a drying section. The press section is usually located in the middle of the paper machine, using mechanical pressure to remove moisture from the paper sheet. This section consists of press rolls and press blankets, where the press rolls apply pressure, while the press blankets assist in absorbing and removing moisture. The drying section is located at the rear of the paper machine, removing residual moisture from the paper sheet using methods such as hot air or infrared radiation. The drying section typically consists of multiple drying cylinders and a hot air system. The hot air system provides the necessary high-temperature drying air, while the drying cylinders further reduce the moisture content through contact heating.

[0004] In practical applications of offset paper dewatering equipment, although the adjustable-gap roller design aims to achieve efficient dewatering through compression, the fixed width of the rollers makes it difficult to adapt to various paper widths during the compression dewatering process. This results in the paper edges, especially the edges of wider papers, being subjected to stronger compression forces, leading to excessive water removal. This phenomenon not only reduces dewatering efficiency but may also cause excessive damage to the paper edges.

[0005] During the extrusion process of offset paper, the paper tends to adhere to the rollers. This is mainly due to the adhesion of sticky substances or moisture on the paper surface to the roller surface under high pressure. This adhesion not only affects the continuity of the dewatering operation but can also damage the paper surface, thus affecting the quality of the final product. Utility Model Content

[0006] The main objective of this invention is to provide a dehydration device for double-sided coated paper, which can effectively solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A dewatering device for double-sided coated paper includes a support frame, a chute, and an electric push rod. The chute is located on the side wall of the support frame, and the electric push rod is bolted to the support frame. The telescopic end of the electric push rod moves up and down in the chute. The chute is equipped with a sliding bearing assembly. The sliding bearing assembly and the electric push rod are connected by a connector. The two sliding bearing assemblies are connected to a dewatering movable roller through a first connecting shaft. The dewatering movable roller is fitted with two first limiting water suction rings. The dewatering operation is performed by limiting the dewatering of the workpiece through the dewatering movable roller and the first limiting water suction rings. A fixed bearing assembly is installed on the lower side wall of the support frame. Two fixed bearing assemblies are connected to a dehydration fixed roller via a second connecting shaft. The dehydration fixed roller and the dehydration movable roller cooperate with each other, and the dehydration operation of the workpiece between the dehydration fixed roller and the dehydration movable roller is realized by an electric push rod. A water storage tank is installed at the lower end of the support frame, and a drain port is installed at the lower edge of the water storage tank. Wastewater is collected through the water storage tank and drained through the drain port.

[0008] In a further preferred embodiment, two second limiting water-absorbing rings are sleeved on the dewatering fixed roller, the second limiting water-absorbing rings are directly opposite the first limiting water-absorbing rings, the inner edge of the second limiting water-absorbing rings is arc-shaped, and the second limiting water-absorbing rings are threaded onto the dewatering fixed roller. In a further preferred embodiment, the first limiting absorbent ring and the second limiting absorbent ring have the same structure, and the first limiting absorbent ring and the second limiting absorbent ring include a limiting ring, an absorbent layer and a sponge inner layer. The sponge inner layer is located in the inner cavity of the limiting ring, and the absorbent layer is provided between the limiting ring and the sponge inner layer. The inner wall of the limiting ring is provided with threads. In a further preferred embodiment, both ends of the dewatering movable roller and the dewatering fixed roller are provided with threaded portions, the dewatering fixed roller is fixed to the second connecting shaft by bolts, and the dewatering movable roller is fixed to the first connecting shaft by bolts; In a further preferred embodiment, the connector is connected to the telescopic end of the electric push rod by bolts. The cross-section of the connector is designed in an inverted "T" shape. The upper end of the sliding bearing assembly has a T-shaped hole, and the connector is inserted into the T-shaped hole of the sliding bearing assembly. In a further preferred embodiment, the water storage tank is connected to the support frame by bolts, and the upper opening of the water storage tank is directly opposite the dehydration fixed roller and the dehydration movable roller to realize the collection of wastewater from the dehydration of the items to be processed. A valve is installed on the drain port to realize the opening and closing of the drain port.

[0009] Compared with the prior art, the present invention has the following beneficial effects: The design of the limiting absorbent rings allows for precise and controlled dehydration of the coated paper. Both the first and second limiting absorbent rings adhere tightly to the paper, effectively absorbing excess moisture. This limiting design not only improves dehydration efficiency but also ensures consistent dehydration quality.

[0010] The water storage tank ensures timely collection of wastewater generated during the dehydration process. Wastewater flows into the tank through a suction ring, preventing overflow and environmental pollution and equipment damage. Furthermore, the drain outlet at the bottom of the tank facilitates wastewater discharge and treatment, improving equipment cleanliness and maintenance convenience. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side view of the overall structure of this utility model; Figure 3 This is a front view of the overall structure of this utility model; Figure 4 The diagram shows the dewatering movable roller, dewatering fixed roller, and limiting water suction ring of this utility model.

[0012] In the diagram: 1. Support frame; 2. Slide groove; 3. Electric push rod; 4. Connector; 5. Sliding bearing assembly; 6. First connecting shaft; 7. Dewatering movable roller; 8. First limiting water suction ring; 9. Fixed bearing assembly; 10. Second connecting shaft; 11. Dewatering fixed roller; 12. Second limiting water suction ring; 13. Water storage tank; 14. Drain outlet. Detailed Implementation

[0013] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0014] like Figure 1 - Figure 4 As shown, a dewatering device for offset paper includes a support frame 1, a slide 2, and an electric push rod 3. The slide 2 is cleverly mounted on the side wall of the support frame 1, while the electric push rod 3 is securely mounted on the support frame 1 by bolts. The telescopic end of the electric push rod 3 can move freely up and down in the slide 2 to achieve its function.

[0015] A sliding bearing assembly 5 is installed inside the groove of the slide 2. This sliding bearing assembly 5 is connected to the electric push rod 3 via a connector 4, thus ensuring an effective connection between the two. Furthermore, two sliding bearing assemblies 5 are connected together via a first connecting shaft 6, which in turn is connected to a dewatering movable roller 7. Two first limiting suction rings 8 are fitted onto the roller of the dewatering movable roller 7, and these two suction rings can perform limiting dewatering operations on the workpiece.

[0016] A fixed bearing assembly 9 is installed on the lower side wall of the support frame 1. Two fixed bearing assemblies 9 are connected together by a second connecting shaft 10, which in turn is connected to a dewatering fixed roller 11. The dewatering fixed roller 11 cooperates with the dewatering movable roller 7, and the dewatering operation of the workpiece can be realized between the dewatering fixed roller 11 and the dewatering movable roller 7 by the action of the electric push rod 3. To further improve the dewatering process, a water storage tank 13 is installed at the lower end of the support frame 1, and a drain port 14 is installed on the lower edge of the water storage tank 13. Wastewater can be collected through the water storage tank 13 and drained through the drain port 14.

[0017] Two second limiting suction rings 12 are fitted onto the dewatering fixed roller 11, and these two suction rings are directly opposite the first limiting suction ring 8. The inner edge of the second limiting suction ring 12 is arc-shaped to better fit with the first limiting suction ring 8. The second limiting suction ring 12 is threaded onto the dewatering fixed roller 11 to ensure its firmness.

[0018] The first limiting absorbent ring 8 and the second limiting absorbent ring 12 have the same structure. They include a limiting ring, an absorbent layer, and a sponge inner layer. The sponge inner layer is located in the inner cavity of the limiting ring, and the absorbent layer is disposed between the limiting ring and the sponge inner layer. The inner wall of the limiting ring is threaded for connection with the dewatering roller.

[0019] Both ends of the dewatering movable roller 7 and the dewatering fixed roller 11 are provided with threaded portions for connection to the connecting shaft. The dewatering fixed roller 11 is fixed to the second connecting shaft 10 by bolts, while the dewatering movable roller 7 is fixed to the first connecting shaft 6 by bolts. This ensures the stability and reliability of the dewatering rollers.

[0020] Connector 4 is connected to the telescopic end of electric actuator 3 by bolts. Connector 4 has an inverted "T" shaped cross-section to mate with sliding bearing assembly 5. The upper end of sliding bearing assembly 5 has a T-shaped hole into which connector 4 can be inserted to achieve connection between the two.

[0021] The water storage tank 13 is connected to the support frame 1 by bolts. The upper opening of the water storage tank 13 faces the fixed dewatering roller 11 and the movable dewatering roller 7 to collect the wastewater generated during the dewatering process of the items to be processed. A valve is installed on the drain port 14, which can control the opening and closing of the drain port 14, thereby achieving precise control of wastewater discharge.

[0022] Ensure the equipment power is connected and turned on. Check that all connections are secure, especially the connections between the electric push rod 3, the sliding bearing assembly 5, the moving dewatering roller 7, and the fixed dewatering roller 11. Confirm that the water storage tank 13 is correctly installed at the lower end of the support frame 1, and check that the valve at the drain port 14 is closed. Turn on the power switch to start the electric push rod 3. The telescopic end of the electric push rod 3 moves up and down in the slide groove 2, driving the connector 4 and the sliding bearing assembly 5 to move.

[0023] Place the coated paper to be processed between the fixed dewatering roller 11 and the movable dewatering roller 7. Adjust the thrust of the electric push rod 3 to ensure that the first limiting suction ring 8 and the second limiting suction ring 12 are in close contact with the coated paper, performing a limiting dewatering operation. The width of the first limiting suction ring 8 and the second limiting suction ring 12 is adjusted along the dewatering rollers to adapt to the workpiece. The coated paper passes between the dewatering rollers, and excess water is absorbed by the suction rings and flows into the water storage tank 13. Monitor the dewatering effect and adjust the thrust or speed of the electric push rod 3 as needed. Ensure that the wastewater in the water storage tank 13 does not overflow; if necessary, open the valve of the drain port 14 to discharge it. When the coated paper is dewatered, turn off the power to the electric push rod 3. Remove the dewatered coated paper.

[0024] Ensure the equipment power is off and the electric push rod 3 is stopped. Wipe the surfaces of the moving dehydration roller 7 and the stationary dehydration roller 11 with a clean cloth or paper towel to remove any residual paper scraps or stains. For stubborn stains, use a suitable amount of detergent to wipe them off, then rinse thoroughly with clean water. Remove the first limiting absorbent ring 8 and the second limiting absorbent ring 12 and clean them separately. Rinse the inner and outer surfaces of the absorbent rings with clean water to remove any residual moisture and stains. After cleaning, allow the absorbent rings to air dry or wipe them dry with a clean cloth.

[0025] Open the valve at drain port 14 to completely drain the wastewater from storage tank 13. Rinse the inside of storage tank 13 with clean water to ensure no residual dirt remains. After cleaning, close the valve at drain port 14. Check that all connections are secure, especially the connections between the electric push rod 3, sliding bearing assembly 5, moving dewatering roller 7, and fixed dewatering roller 11. Confirm that components such as slide 2, connecting shaft, and connector 4 are clean and free of foreign objects or stains. If necessary, lubricate to ensure smooth operation of the equipment. Reinstall all components in place, ensuring secure connections. Confirm that the equipment has been restored to its initial state and is ready for the next use.

[0026] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A dewatering device for double-sided coated paper, comprising a support frame (1), a slide groove (2), and an electric push rod (3), wherein the slide groove (2) is located on the side wall of the support frame (1), and the electric push rod (3) is bolted to the support frame (1), and the telescopic end of the electric push rod (3) moves up and down in the slide groove (2), characterized in that: The chute (2) is equipped with a sliding bearing assembly (5), and the sliding bearing assembly (5) and the electric push rod (3) are connected by a connector (4). The two sliding bearing assemblies (5) are connected to a dewatering roller (7) through a first connecting shaft (6). The dewatering roller (7) is fitted with two first limiting water suction rings (8). The dewatering roller (7) and the first limiting water suction rings (8) limit the dewatering operation of the work to be processed. The lower side wall of the support frame (1) is equipped with a fixed bearing assembly (9). The two fixed bearing assemblies (9) are connected to a dehydration fixed roller (11) through a second connecting shaft (10). The dehydration fixed roller (11) and the dehydration movable roller (7) cooperate with each other and the dehydration operation of the work to be processed between the dehydration fixed roller (11) and the dehydration movable roller (7) is realized by an electric push rod (3). A water storage tank (13) is installed at the lower end of the support frame (1), and a drain port (14) is installed at the lower edge of the water storage tank (13). Wastewater is collected through the water storage tank (13) and drained through the drain port (14).

2. The dewatering device for offset paper according to claim 1, characterized in that: The dewatering fixed roller (11) is fitted with two second limiting water absorption rings (12), which are directly opposite the first limiting water absorption ring (8). The inner edge of the second limiting water absorption ring (12) is arc-shaped, and the second limiting water absorption ring (12) is threaded onto the dewatering fixed roller (11).

3. The dewatering device for offset paper according to claim 2, characterized in that: The first limiting water-absorbing ring (8) and the second limiting water-absorbing ring (12) have the same structure. The first limiting water-absorbing ring (8) and the second limiting water-absorbing ring (12) include a limiting ring, a water-absorbing layer and a sponge inner layer. The sponge inner layer is located in the inner cavity of the limiting ring. The water-absorbing layer is provided between the limiting ring and the sponge inner layer. The inner wall of the limiting ring is provided with threads.

4. The dewatering device for offset paper according to claim 3, characterized in that: The dewatering movable roller (7) and the dewatering fixed roller (11) are provided with threaded parts at both ends. The dewatering fixed roller (11) is fixed to the second connecting shaft (10) by bolts, and the dewatering movable roller (7) is fixed to the first connecting shaft (6) by bolts.

5. A dewatering device for offset paper according to claim 4, characterized in that: The connector (4) is connected to the telescopic end of the electric push rod (3) by bolts. The cross-section of the connector (4) is an inverted "T" shape. The upper end of the sliding bearing assembly (5) is provided with a T-shaped hole. The connector (4) is inserted into the T-shaped hole of the sliding bearing assembly (5).

6. A dewatering device for offset paper according to claim 5, characterized in that: The water storage tank (13) is connected to the support frame (1) by bolts, and the upper opening of the water storage tank (13) is directly opposite the dewatering fixed roller (11) and the dewatering movable roller (7) to realize the collection of wastewater from the dewatering of the items to be processed. A valve is installed on the drain port (14) to realize the opening and closing of the drain port (14).

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