A shoe press roll with a multi-point pressurization mechanism

Abstract

The utility model discloses a kind of boot pressure roller with multi-point pressurizing mechanism, including bottom plate, the top of bottom plate is symmetrically provided with two fixed frame, boot pressure roller assembly is arranged between two fixed frame, the boot pressure roller assembly includes and the inside fixed connection of two fixed frame H-shaped main body frame, the top of H-shaped main body frame is fixedly connected with shoe plate, the top of shoe plate is embedded with air bag array, the top of air bag array is covered with protective sleeve, air bag array is made of multiple groups of micro air bag, micro high-speed electromagnetic servo valve is mounted in shoe plate side interior, the utility model relates to papermaking industry technical field;A kind of boot pressure roller with multi-point pressurizing mechanism, by setting air bag array in the top of shoe plate, provide uniform pressure for paper, to reduce the wear and tear of boot cover, when working, through the cooperation of detection element, micro high-speed electromagnetic servo valve and micro air bag, dynamic adjustment to press section shape is realized.

Description

Technical Field

[0001] This utility model relates to the field of papermaking technology, specifically a shoe roller with a multi-point pressing mechanism. Background Technology

[0002] The papermaking industry is a highly integrated, continuous production process, with its core step being the dewatering and shaping of pulp into paper. This process typically involves using mechanical pressure to squeeze out moisture from the wet paper web and strengthen fiber bonds, thereby increasing the paper's toughness. Unlike the "line" pressure zone formed by traditional roll presses, shoe presses, through their unique "boot-shaped" pressure plate working in conjunction with the rotating roll shell, create a "surface" pressure zone several times, or even ten times, wider than traditional presses. This significantly extends the time the wet paper web is subjected to high pressure, greatly improving dewatering efficiency.

[0003] Traditional presses rely on a large, single hydraulic chamber to provide pressure. On a roll surface several meters wide, it's difficult to ensure absolutely uniform pressure due to structural deformation, processing errors, and wear. This easily leads to inconsistent dehydration of the paper in the transverse direction, resulting in moisture streaks and severely affecting the uniformity of paper thickness. Furthermore, traditional presses have limited adaptability to the pressure curves of different paper types, and cannot dynamically compensate for real-time moisture distribution and thickness changes during the pressing process. This easily causes localized under-pressing or over-pressing, affecting the final product quality.

[0004] Therefore, this utility model provides a shoe pressure roller with a multi-point pressing mechanism, which solves the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a shoe roller with a multi-point pressing mechanism, which solves the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a shoe roller with a multi-point pressurization mechanism, comprising a base plate, two fixed frames symmetrically arranged on the top of the base plate, a shoe roller assembly disposed between the two fixed frames, the shoe roller assembly comprising an I-shaped main frame fixedly connected to the inner side of the two fixed frames, support frames fixedly connected to both sides of the I-shaped main frame, the I-shaped main frame and the support frames forming the main frame of the roller body, an oil cavity disposed within the main frame, a shoe cover sleeved on the outside of the support frames, a shoe plate fixedly connected to the top of the I-shaped main frame, an airbag array embedded in the top of the shoe plate, a protective cover covering the top of the airbag array, the airbag array being composed of multiple sets of micro airbags, with four micro airbags arranged as a group in the horizontal direction.

[0007] Preferably, a miniature high-speed electromagnetic servo valve is installed inside the side of the boot plate. One end of the miniature high-speed electromagnetic servo valve is connected to the air inlet of four miniature airbags to form an air path. A pressure sensor is installed at the liquid inlet of each miniature airbag. The other side of the miniature high-speed electromagnetic servo valve is connected to the oil chamber.

[0008] Preferably, a cleaning component is installed on the side of the fixing frame, the cleaning component including a connecting frame fixedly connected to the side of the fixing frame, and a fixing plate is provided on the inner side of the connecting frame.

[0009] Preferably, T-shaped sliders are provided on both sides of the fixing plate, the T-shaped sliders are slidably connected to the inner side of the connecting frame, and a cleaning block is fixedly connected to the side of the fixing plate, the cleaning block being in contact with the outside of the boot cover.

[0010] Preferably, a guide rod is fixedly connected inside the connecting frame, and a sliding seat is slidably connected outside the guide rod. The sliding seat is rotatably connected to the fixed plate via a rotating rod.

[0011] Preferably, a spring is provided on the outside of the guide rod, one end of the spring is fixedly connected to the inner wall of the connecting frame, and the other end of the spring is fixedly connected to the side of the sliding seat.

[0012] Preferably, a back roller is rotatably connected between the two fixed frames, the back roller is located above the shoe pressure roller assembly, and guide frames are fixedly connected to both sides of the fixed frames. The two guide frames are located on both sides of the back roller, and a detection element is arranged parallel to the top of the guide frame near the paper feeding side. The side of the detection element is fixedly connected to the fixed frame.

[0013] Preferably, a collection box is slidably connected to the top of the base plate, the collection box is located below the shoe pressure roller assembly, and a handle is fixedly connected to the side of the collection box.

[0014] Beneficial effects This invention provides a shoe pressure roller with a multi-point pressing mechanism. Compared with the prior art, it has the following advantages: (1) A shoe pressure roller with a multi-point press mechanism provides uniform pressure to the paper by setting an airbag array on the top of the shoe plate, thereby reducing the wear of the shoe cover. Multiple sets of micro airbags form an airbag array and are embedded in the top of the shoe plate. One row of micro airbags is set as a group. During operation, hydraulic oil is filled into the micro airbags through a micro high-speed electromagnetic servo valve. At the same time, the pressure in the micro airbags is monitored in real time by a pressure sensor. Different units are controlled by PLC to output different pressures and dynamically adjust the shape of the pressing area, thereby compensating for the wear or deformation of the back roller. At the same time, the detection element enables the device to adapt to different types of paper, increasing the applicability of the device.

[0015] (2) A boot pressure roller with a multi-point pressure mechanism, by setting a cleaning component, realizes the cleaning process of the boot cover. It can clean the outer surface of the boot cover during the rotation of the boot cover, preventing it from entering between the back roller and the boot pressure roller assembly and causing wear to the boot cover. At the same time, during the cleaning process, the spring can push the sliding seat to move, and at the same time drive the rotating rod to deflect, thereby pushing the fixed plate to move, so that the side of the cleaning block is always in contact with the outside of the boot cover. This design can avoid the problem of accelerated wear due to excessive pressure or incomplete cleaning due to insufficient pressure, and achieve the cleaning effect while protecting the boot cover. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the external structure of this utility model; Figure 2 This is a side cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the distribution of the miniature airbags of this utility model; Figure 4 This is a schematic cross-sectional view of the boot plate of this utility model; Figure 5 This is a cross-sectional schematic diagram of the cleaning component of this utility model.

[0017] In the diagram: 1. Base plate; 2. Fixing frame; 3. Back roller; 4. Shoe pressure roller assembly; 5. Guide frame; 6. Detection element; 7. Cleaning assembly; 8. Collection box; 9. Handle; 401. I-shaped main frame; 402. Support frame; 403. Shoe plate; 404. Shoe cover; 405. Miniature airbag; 406. Protective cover; 407. Pressure sensor; 408. Miniature high-speed electromagnetic servo valve; 701. Connecting frame; 702. Guide rod; 703. Sliding seat; 704. Rotating rod; 705. Fixing plate; 706. Cleaning block; 707. T-shaped slider; 708. Spring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example: Please see Figure 1-5A shoe roller with a multi-point pressurization mechanism includes a base plate 1. Two fixed frames 2 are symmetrically arranged on the top of the base plate 1. A shoe roller assembly 4 is arranged between the two fixed frames 2. The shoe roller assembly 4 includes an I-shaped main frame 401 fixedly connected to the inner side of the two fixed frames 2. Support frames 402 are fixedly connected to both sides of the I-shaped main frame 401. The I-shaped main frame 401 and the support frames 402 form the main frame of the roller. An oil cavity is provided inside the main frame. A shoe cover 404 is sleeved on the outside of the support frame 402. A shoe plate 403 is fixedly connected to the top of the I-shaped main frame 401. An airbag array is embedded in the top of the shoe plate 403. The top of the airbag array is covered with a protective cover 406. The airbag array is composed of multiple sets of micro airbags 405, with four micro airbags 405 arranged in a horizontal direction as a group. A miniature high-speed electromagnetic servo valve 408 is installed inside the side of the shoe plate 403. One end of the miniature high-speed electromagnetic servo valve 408 is connected to the air inlet of four miniature airbags 405 to form an air passage. A pressure sensor 407 is installed at the liquid inlet of the miniature airbags 405. The other side of the miniature high-speed electromagnetic servo valve 408 is connected to the oil chamber. A cleaning component 7 is installed on the side of the fixing frame 2. The cleaning component 7 includes a connecting frame 701 that is fixedly connected to the side of the fixing frame 2. A fixing plate 705 is provided on the inner side of the connecting frame 701. Both sides of the fixing plate 705 are provided with T-shaped sliders 707, which are slidably connected to the inner side of the connecting frame 701. A cleaning block 706 is fixedly connected to the side of the fixing plate 705, and the cleaning block 706 is attached to the outside of the boot cover 404. The connecting frame 701 is internally fixedly connected to a guide rod 702, and the guide rod 702 is externally slidably connected to a sliding seat 703. The sliding seat 703 is rotatably connected to the fixed plate 705 via a rotating rod 704. A spring 708 is provided on the outside of the guide rod 702. One end of the spring 708 is fixedly connected to the inner wall of the connecting frame 701, and the other end of the spring 708 is fixedly connected to the side of the sliding seat 703. A back roller 3 is rotatably connected between two fixed frames 2. The back roller 3 is located above the shoe pressure roller assembly 4. Guide frames 5 are fixedly connected to both sides of the fixed frame 2. The two guide frames 5 are located on both sides of the back roller 3. A detection element 6 is arranged parallel to the top of the guide frame 5 near the paper feeding side. The side of the detection element 6 is fixedly connected to the fixed frame 2. A collection box 8 is slidably connected to the top of the base plate 1. The collection box 8 is located below the shoe pressure roller assembly 4. A handle 9 is fixedly connected to the side of the collection box 8.

[0020] like Figure 1 - Figure 4By setting an airbag array on the top of the shoe plate 403, uniform pressure is provided to the paper, thereby reducing wear on the shoe cover 404. Multiple sets of micro airbags 405 form an airbag array and are embedded in the top of the shoe plate 403. A row of micro airbags 405 is set as a group. During operation, the micro high-speed electromagnetic servo valve 408 is controlled by PLC to work and fill the micro airbags 405 with hydraulic oil. At the same time, the pressure sensor 407 monitors the pressure in the micro airbags 405 in real time, and the PLC controls different units to output different pressures to dynamically adjust the shape of the pressure zone, thereby compensating for the wear or deformation of the back roller 3. At the same time, the detection element 6 enables the device to adapt to different types of paper, increasing the applicability of the device.

[0021] During use, when the miniature high-speed electromagnetic servo valve 408 pumps hydraulic oil into 405, pressure can be built up instantly and act on the shoe sleeve 404, forming a stable supporting force on the shoe sleeve 404. The miniature high-speed electromagnetic servo valve 408 is set as a Moger E024 series miniature servo valve. During use, the paper passes sequentially through the top of the guide frame 5 and between the back roller 3 and the shoe pressure roller assembly 4. When the paper is at the top of the guide frame 5, the detection element 6 will detect the moisture of the paper passing through the top of the guide frame 5. The detection element 6 has infrared moisture sensors distributed on the side facing the paper. The array's detection process is as follows: the infrared moisture sensor of the detection element 6 emits infrared light onto the paper surface, and the moisture content at that point can be accurately calculated by measuring the change in the intensity of the reflected or transmitted light; then the control system compares the detected value with the preset value, and precisely controls the hydraulic oil flow and pressure of each micro airbag 405 by controlling the micro high-speed electromagnetic servo valve 408, and dynamically adjusts the shape of the pressure zone. The protective sleeve 406 set on the top of the shoe plate 403 is a flexible structure to prevent the micro airbag 405 from directly contacting the shoe sleeve 404 and causing wear. During the paper extrusion process, the pressure sensor 407 senses the pressure on the micro airbags 405 and together with the control system, forms a complete dynamic pressure adjustment structure. By controlling the micro airbags 405 in different parts, dynamic adjustment or compensation is made between the back roller 3 and the shoe pressure roller assembly 4 to ensure that the paper production quality remains stable.

[0022] like Figure 1 and Figure 5By setting the cleaning component 7, the cleaning process of the boot cover 404 is realized. It can clean the outer surface of the boot cover 404 during the rotation of the boot cover 404, preventing it from entering between the back roller 3 and the boot pressure roller assembly 4 and causing wear to the boot cover 404. At the same time, during the cleaning process, the spring 708 can push the sliding seat 703 to move, and at the same time drive the rotating rod 704 to deflect, thereby pushing the fixed plate 705 to move, so that the side of the cleaning block 706 is always in contact with the outside of the boot cover 404. This design can avoid the problem of accelerated wear due to excessive pressure or incomplete cleaning due to insufficient pressure, achieving a cleaning effect while protecting the boot cover 404.

[0023] During use, the shoe cover 404 is forced to rotate under the friction of the moving back roller 3 and the paper. Since the cleaning block 706 is in contact with the surface of the shoe cover 404, the waste attached to the surface of the shoe cover 404 will be scraped off by the cleaning block 706 and fall into the collection box 8 for collection during rotation. The spring 708 ensures that the cleaning block 706 is always in contact with the outer surface of the shoe cover 404. The reaction force generated by the spring 708 due to compression acts on the sliding seat 703, thereby driving the sliding seat 703 to slide outside the guide rod 702. Then the rotating rod 704 acts on the fixed plate 705, giving it a supporting force, which drives the fixed plate 705 and the cleaning block 706 to fit tightly with the outer surface of the shoe cover 404. This design can avoid the problem of accelerated wear due to excessive pressure or incomplete cleaning due to insufficient pressure, achieving a cleaning effect while protecting the shoe cover 404.

[0024] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" 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 thereof 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 process, method, article, or apparatus.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shoe roller with a multi-point pressing mechanism, comprising a base plate (1), characterized in that: Two fixed frames (2) are symmetrically arranged on the top of the base plate (1). A shoe roller assembly (4) is arranged between the two fixed frames (2). The shoe roller assembly (4) includes an I-shaped main frame (401) fixedly connected to the inner side of the two fixed frames (2). Support frames (402) are fixedly connected to both sides of the I-shaped main frame (401). The I-shaped main frame (401) and the support frames (402) form the main frame of the roller. An oil cavity is provided in the main frame. A shoe cover (404) is sleeved on the outside of the support frame (402). A shoe plate (403) is fixedly connected to the top of the I-shaped main frame (401). An airbag array is embedded in the top of the shoe plate (403). The top of the airbag array is covered with a protective sleeve (406). The airbag array is composed of multiple sets of micro airbags (405). Four micro airbags (405) are arranged in a group.

2. A shoe roller with a multi-point pressing mechanism according to claim 1, characterized in that: A miniature high-speed electromagnetic servo valve (408) is installed inside the side of the boot plate (403). One end of the miniature high-speed electromagnetic servo valve (408) is connected to the air inlet of four miniature airbags (405) to form an air path. A pressure sensor (407) is installed at the liquid inlet of the miniature airbags (405). The other side of the miniature high-speed electromagnetic servo valve (408) is connected to the oil chamber.

3. A shoe roller with a multi-point pressing mechanism according to claim 1, characterized in that: The side of the fixing frame (2) is equipped with a cleaning component (7), the cleaning component (7) includes a connecting frame (701) fixedly connected to the side of the fixing frame (2), and a fixing plate (705) is provided on the inner side of the connecting frame (701).

4. A shoe roller with a multi-point pressing mechanism according to claim 3, characterized in that: Both sides of the fixing plate (705) are provided with T-shaped sliders (707), the T-shaped sliders (707) and the inner side of the connecting frame (701) are slidably connected, and the side of the fixing plate (705) is fixedly connected with a cleaning block (706), the cleaning block (706) and the outside of the boot cover (404) are attached.

5. A shoe roller with a multi-point pressing mechanism according to claim 3, characterized in that: The connecting frame (701) is internally fixedly connected to a guide rod (702), and the guide rod (702) is externally slidably connected to a sliding seat (703). The sliding seat (703) is rotatably connected to a rotating rod (704) and a fixed plate (705).

6. A shoe roller with a multi-point pressing mechanism according to claim 5, characterized in that: A spring (708) is provided on the outside of the guide rod (702). One end of the spring (708) is fixedly connected to the inner wall of the connecting frame (701), and the other end of the spring (708) is fixedly connected to the side of the sliding seat (703).

7. A shoe roller with a multi-point pressing mechanism according to claim 1, characterized in that: A back roller (3) is rotatably connected between the two fixed frames (2). The back roller (3) is located above the shoe pressure roller assembly (4). Guide frames (5) are fixedly connected to both sides of the fixed frame (2). The two guide frames (5) are located on both sides of the back roller (3). A detection element (6) is arranged parallel to the top of the guide frame (5) near the paper feed side. The side of the detection element (6) is fixedly connected to the fixed frame (2).

8. A shoe roller with a multi-point pressing mechanism according to claim 1, characterized in that: A collection box (8) is slidably connected to the top of the base plate (1). The collection box (8) is located below the shoe pressure roller assembly (4). A handle (9) is fixedly connected to the side of the collection box (8).

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