Boot press roll cooling anti-stick structure

Abstract

This utility model relates to the field of papermaking equipment technology, and in particular to a cooling and anti-sticking structure for shoe-type pressure rolls. It includes a roll body with a spiral cooling channel inside. A cooling water inlet pipe is fixedly connected to the left side of the roll body, and a cooling water outlet pipe is fixedly connected to the right side. A heat-conducting layer is fitted onto the surface of the roll body. This utility model achieves a cooling function through the combination of the spiral cooling channel, cooling water inlet pipe, cooling water outlet pipe, and heat-conducting layer. The left-side rotary joint is connected to an external water supply pipe. During roll rotation, the external water supply pipe delivers low-temperature cooling water to the cooling water inlet pipe through the left-side rotary joint. The low-temperature cooling water is then delivered to the spiral cooling channel, which cools the surfaces of the roll body and the heat-conducting layer, preventing material from adhering to the roll body surface.

Description

Technical Field

[0001] This utility model relates to the field of papermaking equipment technology, specifically to a cooling and anti-sticking structure for shoe pressure rollers. Background Technology

[0002] The shoe press roller is a key component in shoe press equipment, mainly used in the paper industry, where its function is to improve the dewatering efficiency of paper.

[0003] The existing forming process uses a boot roller that lacks an internal cooling structure. During continuous contact with the slurry at a certain temperature, the roller body cannot be effectively cooled, causing the surface temperature of the roller body to continuously rise with the production process. The high temperature environment not only makes the slurry more likely to adhere to the roller surface, but also exacerbates the problem of slurry residue. At the same time, the lack of anti-sticking treatment on the roller surface further increases the probability of slurry adhesion. Under the combined effect of these two factors, it is difficult to separate the paper towel from the roller body after forming, frequently causing roller sticking failures. This not only interrupts the continuity of production, but also causes surface quality defects of the paper towel due to slurry residue, increasing product loss and significantly reducing production efficiency and finished product qualification rate.

[0004] To solve the above technical problems, we designed a cooling and anti-sticking structure for the shoe pressure roller. Utility Model Content

[0005] The purpose of this invention is to provide a cooling and anti-sticking structure for shoe rollers, which has the advantage of cooling the roller surface so that the slurry is less likely to adhere. This solves the problem that traditional shoe rollers do not have an internal cooling structure, which causes the roller surface temperature to accumulate and rise continuously during the production process. The high temperature environment not only makes the slurry more likely to adhere to the roller surface, but also aggravates the problem of slurry residue.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cooling and anti-sticking structure for a shoe pressure roller, comprising a roller body, wherein a spiral cooling channel is provided inside the roller body, a cooling water inlet pipe is fixedly connected to the left side of the roller body, a cooling water outlet pipe is fixedly connected to the right side of the roller body, a heat-conducting layer is sleeved on the surface of the roller body, and an anti-sticking coating is covered on the surface of the heat-conducting layer, and a limiting mechanism is movably connected to the top and bottom of both sides of the roller body through a rotating shaft, and a limiting groove adapted to the limiting mechanism is provided on the top and bottom of both sides of the roller body.

[0007] Preferably, the limiting mechanism includes a baffle, which is movably connected to the roller body via a rotating shaft. Each side of the baffle is threaded with a limiting bolt, and the opposite ends of the limiting bolts extend into the interior of the limiting groove.

[0008] Preferably, both the surface of the cooling water inlet pipe and the surface of the cooling water outlet pipe are fixedly fitted with bushings, and both the left end of the cooling water inlet pipe and the right end of the cooling water outlet pipe are connected to a rotary joint.

[0009] Preferably, the right end of the cooling water inlet pipe is connected to the left side of the spiral cooling channel, and the left end of the cooling water outlet pipe is connected to the right side of the spiral cooling channel.

[0010] Preferably, both the surface of the cooling water inlet pipe and the surface of the cooling water outlet pipe are fixedly connected with reinforcing ribs, and the opposite sides of the reinforcing ribs are riveted to the roller body.

[0011] Preferably, the anti-stick coating is made of Teflon, and the thermally conductive layer is made of aluminum tubing.

[0012] Preferably, guide blocks are fixedly connected to the front and rear sides of the inner cavity of the heat-conducting layer, and guide grooves are provided on the front and rear sides of the roller body, with the opposite side of the guide blocks extending into the interior of the guide grooves.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model has the advantage of cooling function through the combination of spiral cooling channel, cooling water inlet pipe, cooling water outlet pipe and heat conduction layer. The left rotary joint is connected to the external water supply pipe. During the rotation of the roller, the external water supply pipe delivers low temperature cooling water to the cooling water inlet pipe through the left rotary joint. The low temperature cooling water is delivered to the spiral cooling channel through the cooling water inlet pipe. Then the spiral cooling channel cools the surface of the roller and the heat conduction layer to prevent material from adhering to the roller surface.

[0015] 2. This utility model has the advantage of anti-adhesion function through the combination of anti-stick coating, limiting mechanism and limiting groove. The heat-conducting layer is sleeved on the surface of the roller body, and then the baffle is rotated. The baffle limits and fixes the heat-conducting layer to prevent it from falling off the surface of the roller body during rotation. Under the action of the anti-stick coating, the slurry residue can be effectively reduced. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the structure of this utility model;

[0017] Figure 2 This is a three-dimensional sectional view of the roller structure of this utility model;

[0018] Figure 3 This is a perspective view of the roller structure of this utility model;

[0019] Figure 4 This is a three-dimensional view of the thermal conductive layer structure of this utility model;

[0020] Figure 5 This is a perspective view of the limiting mechanism of this utility model;

[0021] Figure 6 This utility model Figure 3 A magnified view of A in the middle.

[0022] In the diagram: 1. Roller body; 2. Spiral cooling channel; 3. Cooling water inlet pipe; 4. Cooling water outlet pipe; 5. Heat-conducting layer; 6. Anti-stick coating; 7. Limiting mechanism; 71. Baffle; 72. Limiting bolt; 8. Limiting groove; 9. Bushing; 10. Rotary joint; 11. Reinforcing rib; 12. Guide block; 13. Guide groove. Detailed Implementation

[0023] Please see Figures 1-6 The shoe pressure roller cooling and anti-sticking structure includes a roller body 1. The roller body 1 has an internal spiral cooling channel 2. This spiral design significantly increases the flow path and residence time of the cooling water within the roller body 1, allowing for more thorough contact with the inner wall of the roller body 1 and maximizing the removal of heat generated during operation. This prevents the surface temperature of the roller body 1 from continuously rising. A cooling water inlet pipe 3 is fixedly connected to the left side of the roller body 1. This inlet pipe is specifically designed to introduce low-temperature cooling water supplied by an external water supply pipeline into the spiral cooling channel 2, providing a stable water source for the cooling system and ensuring continuous cooling. A cooling water drain pipe 4 is fixedly connected to the right side of the roller body 1. A cooling water drain pipe 4 is installed to promptly discharge the cooling water that has absorbed heat and increased in temperature within the spiral cooling channel 2, making room for new low-temperature cooling water and forming a circulating flow of cooling water to maintain the continuous cooling capacity of the cooling system. A heat-conducting layer 5 is fitted onto the surface of the roller body 1, and the surface of the heat-conducting layer 5 is covered with an anti-stick coating 6. The anti-stick coating 6 is made of Teflon, which has extremely low surface energy, making it difficult for slurry to adhere to its surface, fundamentally reducing the problem of slurry residue and avoiding the difficulty of separating the formed paper towel from the roller body 1. The top and bottom of both sides of the roller body 1 are movably connected to a limiting mechanism 7 via a rotating shaft, and the top and bottom of both sides of the roller body 1 are provided with limiting grooves 8 that are adapted to the limiting mechanism 7.

[0024] Please see Figure 1 , Figure 5 and Figure 6 The limiting mechanism 7 includes a baffle 71. The baffle 71 is movably connected to the roller body 1 via a rotating shaft. After rotating the baffle 71, the limiting bolt 72 is tightened so that it extends into the limiting groove 8, which can firmly fix the heat-conducting layer 5 on the surface of the roller body 1 and prevent the heat-conducting layer 5 from falling off when the roller body 1 rotates. The baffle 71 is movably connected to the roller body 1 via a rotating shaft. The opposite side of the baffle 71 is threadedly connected to the limiting bolt 72. The opposite end of the limiting bolt 72 extends into the interior of the limiting groove 8.

[0025] Please see Figure 1 and Figure 3Both the surface of the cooling water inlet pipe 3 and the surface of the cooling water drain pipe 4 are fixedly fitted with bushings 9. By setting bushings 9, it is convenient to install the entire shoe pressure roller structure on the shoe pressure roller bracket, which serves as a connection and transition, reducing the installation difficulty. The left end of the cooling water inlet pipe 3 and the right end of the cooling water drain pipe 4 are connected to rotary joints 10. By setting rotary joints 10, connecting the left end of the cooling water inlet pipe 3 and the right end of the cooling water drain pipe 4, it is possible to maintain a sealed connection with the external water supply pipe and drain pipe while the roller body 1 rotates, to prevent the cooling water from leaking during rotation, and to ensure the sealing and stability of the cooling water circulation.

[0026] Please see Figure 2 The right end of the cooling water inlet pipe 3 is connected to the left side of the spiral cooling channel 2, and the left end of the cooling water drain pipe 4 is connected to the right side of the spiral cooling channel 2.

[0027] Please see Figure 1 The surface of the cooling water inlet pipe 3 and the surface of the cooling water outlet pipe 4 are both fixedly connected with reinforcing ribs 11. By setting the reinforcing ribs 11, the load-bearing capacity and deformation resistance of the cooling water inlet pipe 3 and the cooling water outlet pipe 4 are improved, the probability of damage to the water pipes during long-term use is reduced, and the service life of the entire cooling system is extended. The opposite side of the reinforcing ribs 11 is riveted to the roller body 1.

[0028] Please see Figure 4 The anti-stick coating 6 is made of Teflon, and the thermal conductive layer 5 is made of aluminum tubing.

[0029] Please see Figure 3 and Figure 4 Guide blocks 12 are fixedly connected to the front and rear sides of the inner cavity of the heat-conducting layer 5. Guide grooves 13 are opened on the front and rear sides of the roller body 1. By setting guide blocks 12 and guide grooves 13, they play a guiding role when installing the heat-conducting layer 5, so that the heat-conducting layer 5 can be quickly and accurately fitted onto the designated position of the roller body 1, thereby improving the installation efficiency. The opposite side of the guide blocks 12 extends into the interior of the guide grooves 13.

[0030] In use, the bushing 9 is installed on the surface of the shoe roller bracket, and the rotary joint 10 on the left side is connected to the external water supply pipe. During the rotation of the roller body 1, the external water supply pipe delivers low-temperature cooling water to the cooling water inlet pipe 3 through the rotary joint 10 on the left side. The low-temperature cooling water is delivered to the spiral cooling channel 2 through the cooling water inlet pipe 3. Then, the spiral cooling channel 2 cools down the surface of the roller body 1 and the heat-conducting layer 5 to prevent material from adhering to the surface of the roller body 1. At the same time, since the surface of the anti-stick coating 6 is relatively smooth, the anti-stick coating 6 can effectively reduce slurry residue. When the surface of the anti-stick coating 6 is worn and needs to be replaced, loosen the limit bolt 72, then rotate the baffle 71 to remove the heat-conducting layer 5 from the surface of the roller body 1, and then replace it with a new heat-conducting layer 5 to complete the replacement of the anti-stick coating 6.

[0031] In summary, this cooling and anti-sticking structure for the boot roller, through the cooperation of the spiral cooling channel 2, cooling water inlet pipe 3, cooling water outlet pipe 4, heat-conducting layer 5, anti-sticking coating 6, limiting mechanism 7, and limiting groove 8, solves the problem of traditional boot rollers where the surface temperature of the roller body continuously increases during the production process due to the lack of an internal cooling structure. The high temperature environment not only makes the slurry more likely to adhere to the roller surface, but also exacerbates the problem of slurry residue.

Claims

1. Boot press roller cooling anti-sticking structure, comprising a roller body (1), characterized in that: The roller body (1) is provided with a spiral cooling channel (2) inside. A cooling water inlet pipe (3) is fixedly connected to the left side of the roller body (1), and a cooling water drain pipe (4) is fixedly connected to the right side of the roller body (1). A heat-conducting layer (5) is sleeved on the surface of the roller body (1), and an anti-stick coating (6) is covered on the surface of the heat-conducting layer (5). The top and bottom of both sides of the roller body (1) are movably connected to a limiting mechanism (7) through a rotating shaft. A limiting groove (8) adapted to the limiting mechanism (7) is opened on the top and bottom of both sides of the roller body (1).

2. The shoe press roll cooling anti-stick structure according to claim 1, characterized in that: The limiting mechanism (7) includes a baffle (71), which is movably connected to the roller (1) via a rotating shaft. Each side of the baffle (71) is threaded with a limiting bolt (72), and the opposite ends of the limiting bolts (72) extend into the interior of the limiting groove (8).

3. The shoe press roll cooling anti-stick structure according to claim 1, characterized in that: The surface of the cooling water inlet pipe (3) and the surface of the cooling water outlet pipe (4) are both fixedly fitted with bushings (9), and the left end of the cooling water inlet pipe (3) and the right end of the cooling water outlet pipe (4) are both connected to a rotary joint (10).

4. The shoe press roll cooling anti-stick structure according to claim 1, characterized in that: The right end of the cooling water inlet pipe (3) is connected to the left side of the spiral cooling channel (2), and the left end of the cooling water outlet pipe (4) is connected to the right side of the spiral cooling channel (2).

5. The shoe press roll cooling anti-stick structure according to claim 1, characterized in that: The surface of the cooling water inlet pipe (3) and the surface of the cooling water outlet pipe (4) are both fixedly connected with reinforcing ribs (11), and the opposite side of the reinforcing ribs (11) is riveted to the roller body (1).

6. The shoe press roll cooling anti-stick structure according to claim 1, characterized in that: The anti-stick coating (6) is made of Teflon, and the thermally conductive layer (5) is made of aluminum tube.

7. The shoe press roll cooling anti-stick structure according to claim 1, characterized in that: Guide blocks (12) are fixedly connected to the front and rear sides of the inner cavity of the heat-conducting layer (5), and guide grooves (13) are opened on the front and rear sides of the roller body (1). The opposite side of the guide block (12) extends into the interior of the guide groove (13).

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