Fourdrinier machine
By installing the angle adjustment structure and slurry discharge structure on the long net papermaking machine, and adjusting the bottom angle and height of the slurry box, the problem of paper quality being affected by the angle fixation of the slurry box is solved, and efficient production of a variety of papers is achieved.
Patent Information
- Application Number
- CN202422100730.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-29
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-08-29
AI Technical Summary
In existing long mesh paper making machines, the paper quality is affected by the angle fixation of the pulp box and the mesh part, making it difficult to adapt to the production needs of different types of paper.
By installing the angle adjustment structure and slurry discharge structure on the long mesh papermaking machine, adjusting the opening angle and height of the bottom of the slurry box, the uniform spread of the pulp on the mesh and the fiber orientation adjustment are achieved to meet the production needs of different papers.
The adaptive production of different papers is achieved, the uniformity and fiber orientation of the pulp on the mesh is improved, and the quality and production adaptability of paper are improved.
Smart Images
Figure CN223074506U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of paper machines, in particular to a fourdrinier paper machine. Background Art
[0002] A fourdrinier paper machine is a widely used paper-making equipment that uses the fourdrinier technology to produce paper and paperboard. The characteristic of this machine is that it has a relatively long wire section and can continuously produce paper, with high production efficiency and good paper quality. The main process is that the headbox spreads the pulp on the upper surface of the wire section for water drainage and forming.
[0003] At present, the angle between the pulp outlet at the bottom of the headbox of some fourdrinier paper machines and the upper surface of the wire section is fixed. However, factors such as the fiber orientation inside the paper and the evenness of the pulp spreading on the wire section, which determine the paper quality, are directly affected by the pulp outlet angle, and different types of paper require different pulp outlet angles. Content of the Utility Model
[0004] The purpose of the utility model is to provide a fourdrinier paper machine to solve the problems raised in the above background art.
[0005] To achieve the above purpose, the utility model provides the following technical solutions:
[0006] A fourdrinier paper machine includes a forming structure. At both ends of one side edge of the upper surface of the forming structure, angle adjusting structures are fixedly installed. A pulp discharging structure is rotatably installed between the two angle adjusting structures. The angle adjusting structure includes a box body support plate, and a end block sliding groove is formed through the middle of the box body support plate. A supporting end block is slidably clamped in the end block sliding groove.
[0007] Furthermore: The forming structure includes a frame. Support leg columns are fixedly installed at the four corners of the bottom side of the frame. A mesh belt is embedded on the upper surface of the frame. Driving motors are fixedly installed on the side surfaces of the support leg columns. The two ends of the driving rollers on the front and rear sides of the mesh belt are interconnected with the output ends of the driving motors through a synchronous belt group.
[0008] Furthermore: The front and rear edges of the side surface of the supporting end block are fixedly sleeved with the inner rings of bearings. The two sides of the supporting end block are rotatably connected to the two ends of the base plate of the sliding lead screw through bearings. The sliding lead screw is slidably inserted into the lead screw sliding grooves formed on the front and rear sides of the end block sliding groove. A fastening nut is screwed on one end of the sliding lead screw.
[0009] Furthermore: A number of locking slots are formed at equal angles in a ring shape on the side surface of the supporting end block. A spring bolt is fixedly installed on the top of the box body support plate. The insert piece at the lower end of the spring bolt is clamped with the locking slot.
[0010] Furthermore, the pulp discharge structure includes a pulp box, a multi-way pipe is fixedly installed on the top of the pulp box, a slurry drainage component is fixedly installed on the front and rear box walls inside the pulp box, pulp discharge nozzle slots are opened on the front and rear edges of the bottom opening of the pulp box, a pulp discharge nozzle plug is clamped in the pulp discharge nozzle slot, and the upper edge of the pulp discharge nozzle plug and the upper edge of the outer opening of the pulp discharge nozzle slot are fixedly connected to each other by screws.
[0011] Furthermore, the two groups of box support plates are fixedly installed at the rear ends of the edges of both sides of the upper surface of the frame.
[0012] Furthermore, the two groups of support end blocks are fixedly installed on the two side surfaces of the headbox.
[0013] Compared with the prior art, the beneficial effects of the utility model are:
[0014] 1. Pulp is injected into the pulp discharge structure, and then the pulp is spread on the moving forming structure through the pulp discharge structure to carry out pulp forming and papermaking. The support end block can be rotated in the end block slide to adjust the pointing angle of the bottom opening of the pulp discharge structure, thereby adjusting the pulp discharge angle, the uniformity of the pulp arrangement on the pulp mesh, and the orientation of the fibers, thereby adapting to different types of paper and pulp characteristics. The support end block slides up and down at the end block slide to adjust the distance between the bottom of the pulp discharge structure and the upper surface of the mesh, thereby avoiding the rotation of the pulp discharge structure to adjust the angle. When the height of the pulp discharge structure is adjusted, the upper surface of the mesh interferes with the bottom of the pulp discharge structure. It can be used for the production of various papers and has a certain adaptability. When the support end block slides up and down in the end block slide groove, the sliding screw slides up and down in the screw slide groove synchronously. After the actual height of the pulp discharge structure is adjusted, the fastening nut is tightened to relatively fix the position of the support end block. At the same time, after the support end block rotates to adjust the angle of the pulp discharge structure, the insert at the lower end of the spring pin is inserted into the locking slot to relatively fix the rotation angle of the support end block, thereby relatively locking the pulp discharge structure in the adjusted state.
[0015] 2. The pulp introduced into the headbox is preliminarily dispersed through a multi-way pipe, and then the pulp is collected through the semi-cylindrical groove formed at the top of the two groups of pulp drainage components, and the flow rate is slowed down for secondary dispersion. The pulp is evenly introduced into the bottom of the headbox through the gap between the two groups of pulp drainage components, so that the cross-section quantity of the pulp is more uniform when it is discharged. At the same time, the pulp discharge nozzle at the bottom of the headbox is designed to be detachable. By replacing the pulp discharge nozzle inserts of different heights, pulp discharge nozzle structures with different gaps can be formed to meet different paper production needs. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2It is a schematic diagram of the forming structure in the present utility model;
[0018] Figure 3 It is a schematic diagram of the angle adjustment structure in the present utility model;
[0019] Figure 4 It is a schematic diagram of the pulp discharging structure in the present utility model.
[0020] In the figure: 1. Forming structure; 101. Frame; 102. Support leg column; 103. Mesh belt; 104. Driving motor; 105. Synchronous pulley belt group; 2. Angle adjustment structure; 201. Box body support plate; 202. End block chute; 203. Support end block; 204. Sliding lead screw; 205. Lead screw chute; 206. Tightening nut; 207. Locking slot; 208. Spring bolt; 3. Pulp discharging structure; 301. Flow pulp box; 302. Multi-pass pipe; 303. Pulp drainage assembly; 304. Pulp discharging nozzle slot; 305. Pulp discharging nozzle insert. Detailed implementation manners
[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0022] Please refer to Figures 1 to 4 , in the embodiment of the present utility model, a fourdrinier paper machine includes a forming structure 1. At both ends of one side edge of the upper surface of the forming structure 1, an angle adjustment structure 2 is fixedly installed. A pulp discharging structure 3 is rotatably installed between the two groups of angle adjustment structures 2. The angle adjustment structure 2 includes a box body support plate 201. An end block chute 202 is inserted and opened in the middle of the box body support plate 201. A support end block 203 is slidably clamped in the end block chute 202.
[0023] Specifically, inject pulp into the pulp discharging structure 3, and then spread the pulp on the moving forming structure 1 through the pulp discharging structure 3 to perform the pulp forming and papermaking work. The pointing angle of the bottom opening of the pulp discharging structure 3 can be adjusted by rotating the support end block 203 in the end block chute 202, so as to adjust the discharging angle of the pulp, adjust the evenness of the pulp arranged on the wire section and the orientation of the fibers, and thus adapt to different types of papers and the characteristics of the pulp. By sliding the support end block 203 up and down at the end block chute 202, the distance between the bottom of the pulp discharging structure 3 and the upper surface of the wire section can be adjusted to avoid interference between the upper surface of the wire section and the bottom of the pulp discharging structure 3 when the pulp discharging structure 3 rotates and adjusts the angle. It can be used for the production of various papers and has a certain adaptability.
[0024] Example 1
[0025] As Figure 2 shown, in this embodiment, the forming structure 1 includes a frame 101. Support leg columns 102 are fixedly installed at the four corners of the bottom side of the frame 101. A mesh belt 103 is embedded in the upper surface of the frame 101. Driving motors 104 are fixedly installed on one side surface of each support leg column 102. The two ends of the driving rollers on the front and rear sides of the mesh belt 103 are interconnected with the output ends of the driving motors 104 through a synchronous pulley belt set 105; Two groups of box support plates 201 are fixedly installed at the rear ends of the two side edges of the upper surface of the frame 101.
[0026] In this embodiment, the driving motor 104 drives the driving rollers to rotate through the synchronous pulley belt set 105, thereby controlling the movement of the mesh belt 103. The pulp is spread on the mesh belt 103 through the pulp discharging structure 3, and water is drained from the pulp belt.
[0027] As Figure 3 shown, in this embodiment, the front and rear edges of the side surface of the support end block 203 are fixedly sleeved with the inner ring of the bearing. The two sides of the support end block 203 are rotatably connected to the two ends of the base plate of the sliding lead screw 204 through bearings. The sliding lead screw 204 is slidably inserted into the lead screw chutes 205 opened on the front and rear sides of the end block chute 202. A fastening nut 206 is screwed on one end of the sliding lead screw 204; A plurality of locking slots 207 are annularly and equiangularly formed on the side surface of the support end block 203. A spring latch 208 is fixedly installed on the top of the box support plate 201. The insert piece at the lower end of the spring latch 208 is engaged with the locking slot 207; Two groups of support end blocks 203 are fixedly installed on the two side surfaces of the headbox 301.
[0028] During specific implementation, when the support end block 203 slides up and down in the end block chute 202, the sliding lead screw 204 synchronously slides up and down in the lead screw chute 205. After adjusting the actual height of the pulp discharging structure 3, the fastening nut 206 is tightened to relatively fix the position of the support end block 203. At the same time, after the support end block 203 rotates to adjust the angle of the pulp discharging structure 3, the insert piece at the lower end of the spring latch 208 is inserted into the locking slot 207 to relatively fix the rotation angle of the support end block 203, thereby relatively locking the pulp discharging structure 3 in the adjusted state.
[0029] Example 2
[0030] On the basis of Example 1, in order to supplement the specific method of spreading the pulp on the upper surface of the mesh belt 103 through the pulp discharging structure 3 not mentioned in Example 1.
[0031] As Figure 4As shown, in the present embodiment, the pulp discharge structure 3 includes a flow box 301, a multi-way pipe 302 is fixedly installed on the top of the flow box 301, a slurry drainage assembly 303 is fixedly installed on the front and rear side walls inside the flow box 301, and a pulp discharge nozzle slot 304 is provided on the front and rear side edges of the bottom opening of the flow box 301, a pulp discharge nozzle insert 305 is clamped in the pulp discharge nozzle slot 304, and the upper edge of the pulp discharge nozzle insert 305 and the upper edge of the outer opening of the pulp discharge nozzle slot 304 are fixedly connected to each other by screws.
[0032] In specific implementation, the pulp introduced into the headbox 301 is preliminarily dispersed through the multi-way pipe 302, and then the pulp is collected through the semi-cylindrical grooves formed at the tops of the two groups of slurry drainage components 303, and the flow rate is slowed down, and then dispersed again. The pulp is evenly introduced into the bottom of the headbox 301 through the gap between the two groups of slurry drainage components 303, so that the cross-section quantity of the pulp is more uniform when it is discharged. At the same time, the pulp discharge nozzle at the bottom of the headbox 301 is designed to be detachable, and the pulp discharge nozzle structure with different gaps can be formed by replacing the pulp discharge nozzle inserts 305 of different heights to meet different paper production needs.
[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A Fourdrinier paper machine, comprising a forming structure (1), characterized in that, On one side edge at both ends of the upper surface of the forming structure (1), angle adjustment structures (2) are fixedly installed. A slurry discharging structure (3) is rotatably installed between the two groups of angle adjustment structures (2). The angle adjustment structure (2) includes a box body support plate (201). A end block sliding groove (202) is formed through the middle of the box body support plate (201). A support end block (203) is slidably clamped in the end block sliding groove (202).
2. The Fourdrinier paper machine according to claim 1, characterized in that, The forming structure (1) includes a frame (101). Support leg columns (102) are fixedly installed at the four corners of the bottom side of the frame (101). A mesh belt (103) is embedded on the upper surface of the frame (101). Driving motors (104) are fixedly installed on one side surface of each of the support leg columns (102). The two ends of the driving rollers on the front and rear sides of the mesh belt (103) are interconnected with the output ends of the driving motors (104) through a synchronous pulley belt set (105).
3. The fourdrinier paper machine according to claim 2, characterized in that, The front and rear edges of the side surface of the support end block (203) are fixedly sleeved with the inner rings of bearings. The two sides of the support end block (203) are rotatably connected to the two ends of the base plate of a sliding lead screw (204) through bearings. The sliding lead screw (204) slidably penetrates through lead screw sliding grooves (205) formed on the front and rear sides of the end block sliding groove (202). A fastening nut (206) is screwed onto one end of the sliding lead screw (204).
4. The Fourdrinier paper machine according to claim 3, characterized in that, A number of locking slots (207) are formed at equal angles in a ring shape on the side surface of the support end block (203). A spring bolt (208) is fixedly installed at the top of the box body support plate (201). The insert piece at the lower end of the spring bolt (208) is engaged with the locking slot (207).
5. A fourdrinier paper machine according to claim 4, characterized in that, The slurry discharging structure (3) includes a slurry flow box (301). A multi-way pipe (302) is fixedly installed at the top of the slurry flow box (301). Slurry drainage components (303) are fixedly installed on the front and rear side walls inside the slurry flow box (301). Drainage nozzle slots (304) are formed at the edges of the front and rear openings at the bottom of the slurry flow box (301). A drainage nozzle insert piece (305) is clamped in the drainage nozzle slot (304). The upper edge of the drainage nozzle insert piece (305) and the upper edge of the outer opening of the drainage nozzle slot (304) are fixedly connected to each other by screws.
6. The long net paper machine according to claim 5, characterized in that, The two groups of box body support plates (201) are fixedly installed at the rear ends of the two side edges of the upper surface of the frame (101).
7. The fourdrinier paper machine according to claim 6, characterized in that, The two groups of support end blocks (203) are fixedly installed on the two side surfaces of the slurry flow box (301).