A dry vacuum dewatering device for a paper machine wire section

Abstract

The utility model discloses a kind of dry vacuum dewatering devices for paper machine net department, it is related to papermaking equipment technical field, including vacuum box main body, the front side of the vacuum box main body is fixedly installed with control panel, the top of the vacuum box main body is fixedly installed with assembly frame. The utility model is when operating personnel dismounts dehydration panel, first reverse rotation of the threaded push rod of limiting mechanism, release the clamping constraint of the both sides of panel;Subsequently, the drive motor of the inner cavity both sides of vacuum box main body is started, and the push block connected to the output end of motor moves along horizontal direction, drives fixed column to move in sliding slot, and drives movable push plate to translate to dehydration panel direction, after movable push plate and panel edge contact, continue to exert horizontal thrust, panel is slowly pushed out from the mounting area of assembly frame, and operating personnel can directly and easily take down panel from device exterior, without in-depth operation inside vacuum box main body, avoid the difficulty of taking out caused by narrow operation space.

Description

Technical Field

[0001] This utility model relates to the field of papermaking equipment technology, specifically to a dry vacuum dewatering device for the wire section of a papermaking machine. Background Technology

[0002] In the modern papermaking industry, the wire section, as a core component of the paper machine, undertakes the crucial tasks of paper web formation and dewatering. Its dewatering efficiency and quality directly affect the physical properties of the paper, production efficiency, and energy consumption. Among these components, the vacuum dewatering unit, as the core equipment of the wire section's dewatering system, creates a negative pressure environment within a vacuum chamber to extract moisture from the paper web through dewatering elements. This is a key step in transforming the paper web from a wet sheet to a semi-dry one.

[0003] Currently, the vacuum dewatering devices commonly used in the wire section of papermaking machines mainly consist of a vacuum chamber body, a dewatering panel, vacuum pipelines, and control valves. Their working principle involves using a vacuum pump to create negative pressure within the vacuum chamber through the vacuum pipelines. During operation, the paper web comes into contact with the dewatering panel, and moisture, under the pressure difference, enters the vacuum chamber through the dewatering holes on the panel and is ultimately discharged through the drainage system.

[0004] During the operation of the vacuum dewatering unit in the wire section of the paper machine, pulp fibers, fine fillers and impurities carried by the wet paper web will enter the water passage of the dewatering tray along with the water during the dewatering process, thus forming a blockage inside the tray that is difficult to clean, thereby affecting the efficiency of the drying process. Utility Model Content

[0005] The purpose of this invention is to provide a dry vacuum dewatering device for the wire section of a papermaking machine to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A dry vacuum dewatering device for the wire section of a papermaking machine includes a vacuum chamber body, a control panel fixedly installed on the front side of the vacuum chamber body, an assembly frame fixedly installed on the top of the vacuum chamber body, a dewatering panel detachably connected to the inside of the assembly frame, and a vacuum pump fixedly installed at the bottom of the inner cavity of the vacuum chamber body.

[0008] Also includes:

[0009] A limiting mechanism is provided on the inner side of the assembly frame to limit and fix the dehydration panel for stable dehydration processing.

[0010] The pushing mechanism is located at both ends of the inner cavity of the vacuum chamber body and is used to push the dehydration panel to be disassembled for maintenance and cleaning.

[0011] A further improvement of the present invention is that the limiting mechanism includes a fixed base, and two clamping plates are movably installed at both ends of the fixed base. Threaded push rods are movably connected to both ends of the clamping plates, and one end of the threaded push rod extends to the outside of the fixed base.

[0012] A further improvement of this utility model is that: a grid plate is fixedly installed inside the vacuum chamber body, and a locking block is fixedly installed at both ends of the grid plate. A plug-in plate is detachably connected inside the locking block, and the top of the plug-in plate is fixedly installed at the bottom of both ends of the dehydration panel.

[0013] A further improvement of the present invention is that the pushing mechanism includes a movable push plate, the movable push plate has grooves on both sides, a fixed column is movably installed inside the groove, a pushing block is fixedly installed at one end of the fixed column, and a drive motor is fixedly connected to the left end of the pushing block.

[0014] A further improvement of this utility model is that: a limiting plate is fixedly installed on the top of the movable push plate, spring columns are fixedly installed at both ends of the limiting plate, a clamping plate is fixedly connected to the telescopic end of the spring column, and the inner side of the clamping plate is arranged on both sides of the plug-in plate.

[0015] A further improvement of this utility model is that: a vacuum tube is fixedly connected to the input end of the vacuum pump, and a top plate is movably sleeved on the top of the vacuum tube.

[0016] A further improvement of this utility model is that a connecting pipe is fixedly connected to the output end of the vacuum pump, and the other end of the connecting pipe extends to the right side of the vacuum chamber body.

[0017] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0018] 1. This utility model provides a dry vacuum dewatering device for the wire section of a papermaking machine. When the operator installs the dewatering panel, he first aligns the plug plates at the bottom of both ends of the panel with the clips at both ends of the grid plate inside the vacuum chamber body, and inserts them vertically along the preset slots of the clips until the bottom of the panel is in contact with the surface of the grid plate. Then, he rotates the threaded push rod, which drives the clip plate connected to its inner side to move along the guide rail of the fixed base through the threaded transmission until the two clip plates are tightly attached to the edges of the panel from both sides and keep them in a clamped state, forming a stable constraint on the panel and preventing the panel from loosening or shifting due to negative pressure suction, wire pressure or vibration during the subsequent dewatering process, thus facilitating stable dewatering processing of the equipment.

[0019] 2. This utility model provides a dry vacuum dewatering device for the wire section of a papermaking machine. When the operator disassembles the dewatering panel, he first rotates the threaded push rod of the limiting mechanism in the opposite direction to release the clamping constraints on both sides of the panel. Then, he starts the drive motors on both sides of the inner cavity of the vacuum chamber. The push block connected to the output end of the motor moves horizontally, driving the fixed column to move in the slide groove and driving the movable push plate to move horizontally towards the dewatering panel. After the movable push plate contacts the edge of the panel, it continuously applies a horizontal pushing force to slowly push the panel out of the mounting area of ​​the assembly frame. The operator can easily remove the panel directly from the outside of the device without having to go deep into the vacuum chamber to operate, avoiding the difficulty of removing parts due to the narrow operating space. Attached Figure Description

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

[0021] Figure 2 This is a schematic diagram of the main structure of the vacuum chamber of this utility model;

[0022] Figure 3 This is a schematic diagram of the dehydration panel structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the fixed base structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the push block structure of this utility model.

[0025] In the diagram: 1. Vacuum chamber body; 2. Control panel; 3. Assembly rack; 4. Dehydration panel; 5. Vacuum pump; 6. Grating plate; 31. Fixed base; 32. Clamping plate; 33. Threaded push rod; 52. Top plate; 53. Connecting pipe; 54. Vacuum tube; 61. Clamping block; 62. Limiting plate; 63. Drive motor; 64. Movable push plate; 621. Spring column; 622. Clamping plate; 631. Pushing block; 632. Fixed column; 633. Slide groove. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to embodiments:

[0027] like Figure 1-5 As shown, this utility model has the following three specific embodiments.

[0028] Example 1

[0029] This utility model provides a dry vacuum dewatering device for the wire section of a papermaking machine, including a vacuum box body 1, a control panel 2 fixedly installed on the front side of the vacuum box body 1, an assembly frame 3 fixedly installed on the top of the vacuum box body 1, a dewatering panel 4 detachably connected inside the assembly frame 3, and a vacuum pump 5 fixedly installed at the bottom of the inner cavity of the vacuum box body 1.

[0030] Also includes:

[0031] A limiting mechanism is installed inside the assembly frame 3 to limit and fix the dehydration panel 4 for stable dehydration processing.

[0032] The pushing mechanism is located at both ends of the inner cavity of the vacuum chamber body 1. It is used to push the dehydration panel 4 to be disassembled for maintenance and cleaning.

[0033] like Figure 1 As shown, the operator aligns the dewatering panel 4 with the preset mounting slot of the assembly frame 3 and slowly pushes it in until the edge of the panel is in contact with the inner reference surface of the assembly frame 3, ensuring that the dewatering holes of the dewatering panel 4 are aligned with the inner cavity channel of the vacuum chamber body 1. When the dewatering panel 4 reaches the designated position, it is clamped and fixed from both sides with the limiting mechanism on the inner side of the assembly frame 3 to prevent the panel from shifting due to vacuum suction or wire vibration during subsequent dewatering, thus ensuring dewatering stability. The wet paper web of the paper machine wire moves to above the dewatering panel 4, and the vacuum pump 5 at the bottom of the inner cavity of the vacuum chamber body 1 is started using the control panel 2 system. The vacuum pump 5 draws air from the inner cavity of the vacuum chamber body 1 through the pipeline, creating a stable negative pressure environment in the inner cavity. Due to the negative pressure in the inner cavity of the vacuum chamber body 1, the water in the wet paper web passes through the mesh of the wire and the dewatering holes of the dewatering panel 4 in sequence under the pressure difference and enters the inner cavity of the vacuum chamber body 1. The water entering the inner cavity mixes with the air to form an air-water mixture, which is eventually extracted from the outside of the device by the vacuum pump 5 and discharged after being processed by the subsequent air-water separation equipment. The wet paper web achieves increased dryness due to water loss, completing the dehydration process. After processing, when it is necessary to disassemble and replace the dehydration panel 4, the limit mechanism is unlocked and, in conjunction with the pushing mechanism at both ends, the dehydration panel 4 is slowly pushed out of the mounting slot of the assembly frame 3. The operator can directly remove it from the assembly frame 3 to clean the dehydration holes and replace damaged parts.

[0034] Example 2

[0035] The difference from Embodiment 1 is that this embodiment discloses a fixed base 31 and a movable push plate 64. The limiting mechanism includes the fixed base 31, with locking plates 32 movably installed at both ends of the fixed base 31. Threaded push rods 33 are movably connected to both ends of the locking plates 32, with one end of the threaded push rods 33 extending to the outside of the fixed base 31. A grid plate 6 is fixedly installed inside the vacuum chamber body 1, with locking blocks 61 fixedly installed at both ends of the grid plate 6. A plug-in plate is detachably connected inside the locking blocks 61, and the top of the plug-in plate is fixedly installed on the dehydration panel 4. At the bottom of both ends, the pushing mechanism includes a movable push plate 64. The movable push plate 64 has grooves 633 on both sides. A fixed column 632 is movably installed inside the groove 633. A push block 631 is fixedly installed at one end of the fixed column 632. A drive motor 63 is fixedly connected to the left end of the push block 631. A vacuum tube 54 is fixedly connected to the input end of the vacuum pump 5. A top plate 52 is movably sleeved on the top of the vacuum tube 54. A connecting pipe 53 is fixedly connected to the output end of the vacuum pump 5. The other end of the connecting pipe 53 extends to the right side of the vacuum chamber body 1.

[0036] like Figure 2 , 3As shown in Figures 4 and 5, the operator first aligns the plug plates at the bottom of both ends of the dehydration panel 4 with the locking blocks 61 at both ends of the grid plate 6 inside the vacuum chamber body 1, and inserts them vertically along the preset slots of the locking blocks 61 until the bottom of the dehydration panel 4 is in contact with the surface of the grid plate 6. The operator then rotates the threaded push rod 33 on the outside of the fixed base 31 in the limiting mechanism, which drives the locking plate 32 connected to its inner side to move along the guide rail of the fixed base 31 through threaded transmission until the two locking plates 32 are tightly attached to the edges of the dehydration panel 4 from both sides and are kept in a clamped state. The operator sets the target negative pressure value through the control panel 2, and the system starts the vacuum pump 5 at the bottom of the inner cavity of the vacuum chamber body 1. Vacuum pump 5 draws air from the inner cavity of vacuum chamber 1 through connecting pipe 53 at its output end. Simultaneously, vacuum pipe 54 at its input end forms a negative pressure channel, accelerating the discharge of air from the inner cavity. This allows a stable negative pressure environment to be quickly established within the inner cavity of vacuum chamber 1. Under pressure difference, moisture from the wet paper web of the paper machine passes through the mesh openings, the dewatering holes of the dewatering panel 4, and the through holes of the grid plate 6, entering the vacuum pipe 54. The water-air mixture is drawn into vacuum pump 5 through vacuum pipe 54 and then discharged from the outside of vacuum chamber 1 through connecting pipe 53. After the water is separated by the air-water separation equipment, the air is discharged in compliance with standards, and the wet paper web achieves increased dryness due to rapid moisture loss, completing the dewatering process. After the dewatering process is completed, the operator reverses the threaded push rod 33 of the limit mechanism to release the clamping constraints on both sides of the panel, starting the drive motors 63 on both sides of the inner cavity of vacuum chamber 1. The push block 631 connected to its output end moves horizontally. The fixed post 632 at one end of the push block 631 is embedded in the sliding grooves 633 on both sides of the movable push plate 64. As the push block 631 moves, the fixed post 632 slides in the sliding grooves 633 and drives the movable push plate 64 to move horizontally towards the dewatering panel 4. After the movable push plate 64 contacts the edge of the dewatering panel 4, it continuously applies a horizontal pushing force to slowly push the dewatering panel 4 out of the mounting area of ​​the assembly frame 3, making it easy for the operator to remove.

[0037] Example 3

[0038] The difference from Embodiment 2 is that this embodiment discloses a limiting plate 62 and a spring post 621. The limiting plate 62 is fixedly installed on the top of the movable push plate 64, and the spring posts 621 are fixedly installed on both ends of the limiting plate 62. The telescopic ends of the spring posts 621 are fixedly connected to clamps 622, and the inner sides of the clamps 622 are arranged on both sides of the plug-in plate.

[0039] like Figure 5As shown, the operator first aligns the plug-in plates at the bottom of both ends of the dehydration panel 4 with the locking blocks 61 at both ends of the grid plate 6 inside the vacuum chamber body 1, and inserts them vertically along the preset slots of the locking blocks 61. The two sides of the plate will contact the clamping plates 622 at both ends of the top limiting plate 62 of the movable push plate 64, and push the clamping plates 622 to move outward. When the clamping plates 622 move, they will stretch the spring column 621, and the spring column 621 will generate a reverse elastic force, causing the clamping plates 622 to fit tightly against the two sides of the plug-in plate, thereby further limiting and clamping the dehydration panel 4.

[0040] The working principle of the dry vacuum dewatering device used in the wire section of this papermaking machine will be explained in detail below.

[0041] like Figure 1-5 As shown, the operator first aligns the plug plates at the bottom of both ends of the dehydration panel 4 with the locking blocks 61 at both ends of the grid plate 6 inside the vacuum chamber body 1, and inserts them vertically along the preset slots of the locking blocks 61 until the bottom of the dehydration panel 4 is in contact with the surface of the grid plate 6. The operator then rotates the threaded push rod 33 on the outside of the fixed base 31 in the limiting mechanism, which drives the locking plate 32 connected to its inner side to move along the guide rail of the fixed base 31 through threaded transmission until the two locking plates 32 are tightly attached to the edges of the dehydration panel 4 from both sides and are kept in a clamped state. The operator sets the target negative pressure value through the control panel 2, and the system starts the vacuum pump 5 at the bottom of the inner cavity of the vacuum chamber body 1. Vacuum pump 5 draws air from the inner cavity of vacuum chamber 1 through connecting pipe 53 at its output end. Simultaneously, vacuum pipe 54 at its input end forms a negative pressure channel, accelerating the discharge of air from the inner cavity. This rapidly creates a stable negative pressure environment within the inner cavity of vacuum chamber 1. Under pressure difference, moisture from the wet paper web of the paper machine passes sequentially through the mesh openings, the dewatering holes of the dewatering panel 4, and the through-holes of the grid plate 6, entering the vacuum pipe 54. The water-air mixture is drawn into vacuum pump 5 through vacuum pipe 54 and then discharged outside vacuum chamber 1 through connecting pipe 53. After water separation by air-water separator, the air is discharged in compliance with standards, while the wet paper web achieves increased dryness due to rapid moisture loss, completing the dewatering process.

[0042] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A dry vacuum dewatering device for the wire section of a papermaking machine, comprising a vacuum chamber body (1), characterized in that: A control panel (2) is fixedly installed on the front side of the vacuum chamber body (1), an assembly frame (3) is fixedly installed on the top of the vacuum chamber body (1), a dehydration panel (4) is detachably connected inside the assembly frame (3), and a vacuum pump (5) is fixedly installed at the bottom of the inner cavity of the vacuum chamber body (1). Also includes: A limiting mechanism is provided on the inner side of the assembly frame (3) to limit and fix the dehydration panel (4) for stable dehydration processing; The pushing mechanism is located at both ends of the inner cavity of the vacuum chamber body (1) and is used to push the dehydration panel (4) to be disassembled for maintenance and cleaning.

2. The dry vacuum dewatering device for the wire section of a papermaking machine according to claim 1, characterized in that: The limiting mechanism includes a fixed base (31), with a clamping plate (32) movably installed at both ends of the fixed base (31), and a threaded push rod (33) movably connected at both ends of the clamping plate (32), with one end of the threaded push rod (33) extending to the outside of the fixed base (31).

3. A dry vacuum dewatering device for the wire section of a papermaking machine according to claim 1, characterized in that: The vacuum chamber body (1) is fixedly installed with a grid plate (6), and the two ends of the grid plate (6) are fixedly installed with a locking block (61). The locking block (61) is detachably connected with a plug plate, and the top of the plug plate is fixedly installed at the bottom of both ends of the dehydration panel (4).

4. A dry vacuum dewatering device for the wire section of a papermaking machine according to claim 1, characterized in that: The pushing mechanism includes a movable push plate (64), on both sides of the movable push plate (64) are provided with sliding grooves (633), and a fixed column (632) is movably installed inside the sliding groove (633). A pushing block (631) is fixedly installed at one end of the fixed column (632), and a drive motor (63) is fixedly connected to the left end of the pushing block (631).

5. A dry vacuum dewatering device for the wire section of a papermaking machine according to claim 1, characterized in that: A limiting plate (62) is fixedly installed on the top of the movable push plate (64). Spring columns (621) are fixedly installed at both ends of the limiting plate (62). A clamping plate (622) is fixedly connected to the telescopic end of the spring column (621). The inner side of the clamping plate (622) is arranged on both sides of the plug-in plate.

6. A dry vacuum dewatering device for the wire section of a papermaking machine according to claim 1, characterized in that: The vacuum pump (5) has a vacuum tube (54) fixedly connected to its input end, and a top plate (52) is movably sleeved on the top of the vacuum tube (54).

7. A dry vacuum dewatering device for the wire section of a papermaking machine according to claim 1, characterized in that: The output end of the vacuum pump (5) is fixedly connected to a connecting pipe (53), and the other end of the connecting pipe (53) extends to the right side of the vacuum chamber body (1).

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