Composite suction zone papermaking vacuum roll core

Abstract

This utility model discloses a composite suction zone papermaking vacuum roll core, belonging to the field of papermaking vacuum rolls. The outer end of the roll core's rotating shaft is connected to an assembly roller via a bearing assembly. A vacuum roll sleeve is provided between two assembly rollers. Multiple inserts are provided on the side wall of the vacuum roll sleeve, and the side wall of the assembly roller has fitting slots that mate with the inserts. The insertions and fittings achieve a limiting connection between the assembly roller and the vacuum roll sleeve. The cooperation between the inserts and fittings enables a quick limiting connection between the vacuum roll sleeve and the assembly roller, simplifying assembly and disassembly, ensuring precise alignment, and guaranteeing stable and efficient papermaking liquid suction operation. The spiral connecting strip and flow hole design ensure a firm connection between the vacuum roll sleeve and the spiral connecting strip, improving the liquid suction effect, facilitating quick replacement, and reducing maintenance costs. Vacuum nozzles evenly installed on the roll core generate suction through the internal vacuum chamber, efficiently adsorbing liquids such as pulp. The quick assembly / disassembly system allows for rapid assembly and disassembly when changing vacuum nozzles, reducing downtime and improving equipment utilization.

Description

Technical Field

[0001] This utility model relates to the field of papermaking vacuum rollers, and in particular to a composite suction zone papermaking vacuum roller core. Background Technology

[0002] In papermaking machinery, the papermaking vacuum roll, located at the wet end, plays a crucial role. This component utilizes vacuum suction technology to tightly adhere the wet paper web to the roll surface, achieving the dewatering process. This process helps simplify the pressing steps, thereby improving paper production efficiency. The papermaking vacuum roll mainly consists of the roll body, vacuum chamber, operating and drive-side bearing housings, water spray pipe, air cushion pipe, rubber rollers, and vacuum regulating valve. The roll body is typically made of stainless steel, and its dimensions, such as diameter, width, wall thickness, aperture ratio, and aperture diameter, must be customized according to specific application requirements.

[0003] The core component of a papermaking vacuum roll is the roll core, whose main function is to support the roll sleeve and achieve composite liquid absorption. In the papermaking process, the vacuum roll core absorbs liquid through the suction nozzle, a mechanism crucial to the entire process. However, in practical applications, the papermaking liquid often contains impurities such as particulate matter, which easily deposit at the suction nozzle, causing clogging.

[0004] Clogged nozzles have a series of negative impacts on the papermaking process. First, clogging hinders the nozzle's normal liquid intake function, directly affecting the stability and efficiency of the papermaking process. Second, clogging can cause pressure fluctuations in the vacuum chamber of the vacuum roll core, thus affecting paper quality and uniformity. Furthermore, long-term clogging and impurity buildup can cause wear and corrosion to the roll core, shortening its service life. Utility Model Content

[0005] The main objective of this invention is to provide a composite suction zone papermaking vacuum roll core, which can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A composite suction zone papermaking vacuum roll core includes a roll core shaft, a connector, a roll core body, and vacuum nozzles. The connector is installed at the outer end of the roll core shaft, the roll core body is connected between two roll core shafts, and a plurality of vacuum nozzles are installed on the roll core body.

[0008] The outer end of the roller core shaft is connected to an assembly roller via a bearing assembly. A vacuum roller sleeve is provided between the two assembly rollers. The side wall of the vacuum roller sleeve is provided with multiple inserts. The side wall of the assembly roller is provided with a slot that matches the inserts. The assembly roller and the vacuum roller sleeve are connected by the inserts and the slots to achieve a limiting connection.

[0009] A spiral connecting strip is connected between the two assembly rollers via a threaded connecting sleeve, and the spiral connecting strip is placed on the inner wall of the vacuum roller sleeve. The side wall of the vacuum roller sleeve has flow holes, and bolts are inserted into the flow holes to fix the vacuum roller sleeve and the spiral connecting strip, achieving rapid assembly. Multiple sponge sleeves are sleeved between the spiral connecting strip and the roller core, and the side wall of the sponge sleeve has through holes adapted to the vacuum nozzle. The sponge sleeve has perforations adapted to the roller core.

[0010] In a further alternative, the roller core body and the roller core shaft are designed as a single unit, and the inside of the roller core body is provided with multiple vacuum chambers, each of which is adapted to a vacuum nozzle, and the liquid suction operation is realized through the vacuum nozzle;

[0011] In a further optional embodiment, the bearing assembly includes a bearing housing and a bearing, the bearing being installed in the bearing housing, the bearing housing being fixed to the assembly roller by bolts, and the roller core shaft being limited and connected to the shaft by a limiting annular groove and a limiting annular ring, thereby achieving a limiting connection between the assembly roller and the roller core shaft.

[0012] In a further alternative, multiple inserts are arranged in a ring on the vacuum roller sleeve, the inserts and the vacuum roller sleeve are designed as a single unit, the edges of the inserts are arc-shaped, the connection between the inserts and the slot is provided with an anti-slip sleeve, and the connection between the vacuum roller sleeve and the assembly roller is provided with an anti-slip ring.

[0013] In a further alternative, the threaded connecting sleeve and the spiral connecting strip are designed as a single unit. The spiral connecting strip has multiple waist holes that are directly opposite the flow hole. The outer wall of the threaded connecting sleeve is threaded and is connected to the assembly rod through the threads.

[0014] In a further alternative, the sidewall of the sponge sleeve has a slit for quick application onto the roller core, and multiple sponge sleeves are equidistantly applied onto the roller core and secured by a spiral connecting strip.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] By using the interlocking blocks and inserts, a quick-connection limit is achieved between the vacuum roller sleeve and the assembly roller. This design not only simplifies the assembly and disassembly process and improves work efficiency, but also ensures the precise alignment of the overall structure, guaranteeing the stability and efficiency of the liquid absorption operation during the papermaking process.

[0017] The design of the spiral connecting strip and flow holes allows the vacuum roller sleeve to be securely connected to the spiral connecting strip while ensuring smooth fluid flow, further improving the liquid suction effect. This design also facilitates quick replacement of the vacuum roller sleeve when needed, reducing maintenance costs.

[0018] Vacuum nozzles evenly installed on the roll core generate suction through the vacuum chamber inside the roll core, efficiently adsorbing pulp or other liquid materials onto the roll core, thus improving efficiency and quality in the papermaking process. Meanwhile, the sponge sleeve design not only enhances the overall structural seal but also ensures consistent and reliable liquid absorption.

[0019] The application of the quick-release system allows for rapid disassembly and installation when vacuum nozzles need to be replaced, reducing downtime and increasing equipment utilization. This design also facilitates routine maintenance and extends the equipment's lifespan. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is an exploded view of the overall structure of this utility model;

[0022] Figure 3 This is an exploded view of the roller core, spiral connecting strip, threaded connecting sleeve and sponge sleeve of this utility model;

[0023] Figure 4 The diagram shows the roller core, spiral connecting strip, threaded connecting sleeve, and sponge sleeve of this utility model.

[0024] Figure 5 for Figure 2 Enlarged diagram of point A in the middle.

[0025] In the figure: 1. Roller core shaft; 2. Joint; 3. Roller core body; 4. Vacuum nozzle; 5. Sponge sleeve; 6. Through hole; 7. Perforation; 8. Threaded connecting sleeve; 9. Spiral connecting strip; 10. Assembly roller; 11. Bearing assembly; 12. Vacuum roller sleeve; 13. Flow hole; 14. Insert block; 15. Insert. Detailed Implementation

[0026] 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.

[0027] like Figure 1 - Figure 5 As shown, a composite suction zone papermaking vacuum roll core includes key components such as a core shaft 1, a connector 2, a core body 3, and vacuum nozzles 4. Specifically, the connector 2 is installed at the outer end of the core shaft 1 to ensure structural stability and reliability. The core body 3 connects two core shafts 1, making the entire core structure more robust and durable. Furthermore, multiple vacuum nozzles 4 are evenly installed on the core body 3 to achieve efficient liquid suction.

[0028] To further improve the performance of the vacuum roller, the outer end of the roller core shaft 1 is connected to the assembly roller 10 via a bearing assembly 11. The bearing assembly 11 includes a bearing housing and a bearing. The bearing housing is fixed to the assembly roller 10 by bolts, ensuring the flexibility and stability of rotation. A vacuum roller sleeve 12 is provided between the two assembly rollers 10. The side wall of the vacuum roller sleeve 12 is provided with multiple inserts 14, while the side wall of the assembly roller 10 is provided with a fitting slot 15 that matches the inserts 14. Through the cooperation of the inserts 14 and the fitting slot 15, the assembly roller 10 and the vacuum roller sleeve 12 are connected in a limiting manner, thereby ensuring the precise alignment of the overall structure.

[0029] A spiral connecting strip 9 is connected between the two assembly rollers 10 via a threaded connecting sleeve 8, and the spiral connecting strip 9 is placed on the inner wall of the vacuum roller sleeve 12. Flow holes 13 are provided on the side wall of the vacuum roller sleeve 12. Bolts are inserted into the flow holes 13 to fix the vacuum roller sleeve 12 and the spiral connecting strip 9, thus achieving rapid assembly. To further improve the convenience and reliability of assembly, multiple sponge sleeves 5 are fitted between the spiral connecting strip 9 and the roller core 3. The side wall of the sponge sleeve 5 has through holes 6 adapted to the vacuum nozzle 4, and the sponge sleeve 5 also has perforations 7 adapted to the roller core 3, ensuring the overall sealing and liquid suction effect of the structure.

[0030] It is worth noting that the roll core body 3 and the roll core shaft 1 are integrated into a single design, resulting in a more compact structure and higher strength. The roll core body 3 has multiple vacuum chambers inside, each of which is fitted with a vacuum nozzle 4. Liquid suction is achieved through the vacuum nozzle 4, thereby improving the efficiency and quality of the papermaking process.

[0031] To ensure a stable connection, the bearing in the bearing assembly 11 is installed in a bearing housing, which is fixed to the assembly roller 10 by bolts. The roller core shaft 1 is connected to the shaft through a limiting annular groove and a limiting annular ring, thereby achieving a limiting connection between the assembly roller 10 and the roller core shaft 1, ensuring the stability and accuracy of rotation.

[0032] In terms of detailed design, multiple inserts 14 are arranged in a ring on the vacuum roller sleeve 12. The inserts 14 and the vacuum roller sleeve 12 are integrated into one piece, and the edges of the inserts 14 are arc-shaped to reduce stress concentration. An anti-slip sleeve is provided at the connection between the inserts 14 and the insert 15 to further improve the stability of the connection. An anti-slip ring is provided at the connection between the vacuum roller sleeve 12 and the assembly roller 10 to prevent slippage during high-speed rotation.

[0033] The threaded connecting sleeve 8 and the spiral connecting bar 9 are integrated into one piece. The spiral connecting bar 9 has multiple slotted holes that face the flow hole 13 to ensure smooth fluid flow. The outer wall of the threaded connecting sleeve 8 is threaded and connects to the assembly rod 10 through the threads, making the connection more secure and reliable.

[0034] Finally, the sidewalls of the sponge sleeve 5 have slits for quick placement onto the roller core 3. Multiple sponge sleeves 5 are equidistantly placed on the roller core 3 and secured by spiral connecting strips 9. This design not only improves assembly efficiency but also ensures the uniform distribution of the sponge sleeves 5, thereby guaranteeing the consistency and reliability of the liquid absorption effect.

[0035] Ensure all other parts of the papermaking equipment are correctly installed and debugged. Then, install the composite suction zone papermaking vacuum roll into its predetermined position within the papermaking equipment. Start the papermaking equipment; the roll core shaft 1 is connected to the assembly roller 10 via the bearing assembly 11, causing the vacuum roll to begin rotating. During the papermaking process, pulp or other liquid materials are conveyed to the vacuum roll. Multiple vacuum nozzles 4 generate suction through the vacuum chamber inside the roll core 3, adsorbing the liquid material onto the roll core 3 for subsequent processing. The limiting connection between the vacuum roll sleeve 12 and the assembly roller 10, as well as the design of the spiral connecting strip 9 and the flow holes 13, ensure the stability and efficiency of the liquid suction operation.

[0036] Shut down the papermaking equipment and disconnect the power supply, ensuring safe operation. Then, disassemble the threaded connecting sleeve 8 of the connecting assembly roller 10 and remove the spiral connecting strip 9 from the vacuum roller sleeve 12. Next, remove the vacuum roller sleeve 12, exposing the roller core 3 and the vacuum nozzle 4. Using appropriate tools, such as a wrench or screwdriver, remove the vacuum nozzle 4 that needs replacement from the roller core 3. Be careful not to damage the roller core 3 or other components during disassembly. Install the new vacuum nozzle 4 onto the roller core 3 in its original position and manner, ensuring a secure and well-sealed installation. Then, reinstall the vacuum roller sleeve 12 and the spiral connecting strip 9, tightening the threaded connecting sleeve 8 to ensure a reliable connection. Finally, restart the papermaking equipment and perform necessary adjustments and checks to ensure the vacuum roller is functioning properly.

[0037] 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.

[0038] 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 composite suction zone papermaking vacuum roll core, comprising a core shaft (1), a connector (2), a core body (3), and vacuum nozzles (4), wherein the connector (2) is installed at the outer end of the core shaft (1), the core body (3) is connected between two core shafts (1), and a plurality of vacuum nozzles (4) are installed on the core body (3), characterized in that: The outer end of the roller core shaft (1) is connected to an assembly roller (10) via a bearing assembly (11). A vacuum roller sleeve (12) is provided between the two assembly rollers (10). The side wall of the vacuum roller sleeve (12) is provided with multiple inserts (14). The side wall of the assembly roller (10) is provided with a slot (15) that matches the inserts (14). The assembly roller (10) and the vacuum roller sleeve (12) are connected by the inserts (14) and the slot (15). A spiral connecting strip (9) is connected between the two assembly rollers (10) by a threaded connecting sleeve (8), and the spiral connecting strip (9) is placed on the inner wall of the vacuum roller sleeve (12). The side wall of the vacuum roller sleeve (12) is provided with a flow hole (13). The flow hole (13) is inserted with a bolt to fix the vacuum roller sleeve (12) and the spiral connecting strip (9) and realize quick assembly. Multiple sponge sleeves (5) are sleeved between the spiral connecting strip (9) and the roller core (3), and the side wall of the sponge sleeve (5) is provided with a through hole (6) adapted to the vacuum nozzle (4). The sponge sleeve (5) is provided with a through hole (7) adapted to the roller core (3).

2. The composite suction zone papermaking vacuum roll core according to claim 1, characterized in that: The roller core body (3) and the roller core shaft (1) are designed as a single unit, and the roller core body (3) has multiple vacuum chambers inside, each of which is fitted with a vacuum nozzle (4) to perform liquid suction operation.

3. The composite suction zone papermaking vacuum roll core according to claim 2, characterized in that: The bearing assembly (11) includes a bearing housing and a bearing. The bearing is installed in the bearing housing. The bearing housing is fixed to the assembly rod (10) by bolts. The roller core shaft part (1) is connected to the shaft by a limiting ring groove and a limiting ring, thereby realizing the limiting connection between the assembly rod (10) and the roller core shaft part (1).

4. The composite suction zone papermaking vacuum roll core according to claim 3, characterized in that: Multiple inserts (14) are arranged in a ring on the vacuum roller sleeve (12). The inserts (14) and the vacuum roller sleeve (12) are designed as a single unit. The edges of the inserts (14) are arc-shaped. Anti-slip sleeves are provided at the connection between the inserts (14) and the slot (15). Anti-slip rings are provided at the connection between the vacuum roller sleeve (12) and the assembly roller (10).

5. The composite suction zone papermaking vacuum roll core according to claim 4, characterized in that: The threaded connecting sleeve (8) and the spiral connecting strip (9) are designed as a single unit. The spiral connecting strip (9) has multiple waist holes, which are directly opposite the flow hole (13). The outer wall of the threaded connecting sleeve (8) is threaded and connected to the assembly rod (10) through the thread.

6. The composite suction zone papermaking vacuum roll core according to claim 5, characterized in that: The sidewall of the sponge sleeve (5) has a slit for quick fitting onto the roller core (3). Multiple sponge sleeves (5) are fitted onto the roller core (3) at equal intervals and are restricted by a spiral connecting strip (9).

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