A fibrous foam separator

Abstract

A kind of fibrous foam separator, comprising: cylinder;The middle part of the cylinder is equipped with stirring shaft;The bottom end of the stirring shaft is equipped with stirring blade;The top end of the cylinder is partially provided with continuous gap;The upper edge of the continuous gap is flush with the upper part of the stirring shaft and is equipped with slag scraping plate;The cylinder outside of the continuous gap is equipped with chute;The bottom of the chute is chute bottom plate, the periphery of the chute bottom plate is equipped with chute side plate, and the upper edge of chute side plate is flush with the top end of cylinder;The chute bottom plate is spirally arranged from one end of continuous gap to the other end, and the lowest point is equipped with overflow port;The inside of the continuous gap is equipped with inwardly extending separation baffle;The middle part of the cylinder is equipped with feed inlet.The fibrous foam separator of the utility model has good foam dross separation effect, can efficiently recycle fiber raw material, saves energy and reduces consumption, reduces environmental pollution, and has low production cost.

Description

Technical Field

[0001] This utility model relates to a fiber foam separator, specifically a fiber foam separator for the tailings of waste paper pulping fine screening. Background Technology

[0002] Utilizing fiber raw materials efficiently is a crucial means for the paper industry to reduce production costs and environmental pollution. Currently, domestic waste paper is a significant fiber raw material for my country's paper industry, accounting for approximately 70% of total fiber raw materials. As a secondary fiber, domestic waste paper typically contains a certain amount of waste residue, with fine screening tailings accounting for as much as 2%, totaling over 1 million tons. Fine screening tailings mainly consist of high-quality long fibers and packaging foam particles, and are currently primarily discharged as solid waste, not only wasting resources but also leading to increased treatment costs and environmental pollution.

[0003] Currently, some factories recycle the fine screen residue as raw material for sand tube paper. However, the foam particles not only contaminate the surface of the drying cylinder of the sand tube paper machine during the drying process, but also affect the quality and appearance of the finished product. Imported complete sets of processing equipment are not only expensive but also require a large area, while there are no mature design solutions for domestically produced equipment. Therefore, there is an urgent need to conduct further in-depth research on fine screen residue recycling technology to achieve efficient utilization of fibers in the waste paper pulping process. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the above-mentioned defects of the existing technology and provide a fiber foam separator with good foam scum separation effect, efficient recovery of fiber raw materials, energy saving and consumption reduction, environmental pollution reduction and low production cost.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: A fiber foam separator includes: a cylinder; a stirring shaft is provided in the middle of the cylinder; stirring blades are provided at the bottom end of the stirring shaft; a continuous notch is opened at the top of part of the cylinder; a scraper is provided at the upper part of the stirring shaft flush with the upper edge of the continuous notch; a chute is provided on the cylinder outside the continuous notch; the bottom of the chute is a chute bottom plate, and a chute side plate is provided around the chute bottom plate, with the upper edge of the chute side plate flush with the top of the cylinder; the chute bottom plate is spirally descending from one end of the continuous notch to the other end, and an overflow port is provided at the lowest point; a separation baffle extending inward is provided inside the continuous notch; and a feed inlet is provided in the middle area of ​​the cylinder. This utility model uses a separation baffle and a chute side plate to achieve slag collection.

[0006] The working process of this fiber foam separator is as follows: fine screen tailings slurry is injected into the cylinder through the feed inlet in the middle of the cylinder, and the stirring shaft is turned on at the same time. When the scraper plate is partially submerged in the fine screen tailings slurry, the foam scum floating in the fine screen tailings slurry is scraped against the inner wall of the cylinder by the rotating scraper plate. The foam scum is blocked by the separation baffle inside the continuous notch and overflows into the chute. Finally, it is discharged from the overflow port to the next stage extrusion equipment.

[0007] Preferably, the upper edge of the cylinder without continuous notches and the upper edge of the chute side plate are provided with reinforcing angle steel.

[0008] Preferably, a level gauge interface is provided at the lower part of the cylinder. The level gauge interface is used to monitor whether the equipment is operating normally.

[0009] Preferably, the cylindrical body is connected to the cone at the bottom.

[0010] Preferably, the cone has a discharge port at its bottom.

[0011] Preferably, the outer side of the cone is provided with reinforcing flat steel along the generatrix.

[0012] Preferably, a pad is provided at the junction of the cylinder and the cone, and a supporting steel pipe with an end-cut shape adapted to the pad is provided on the pad. The pad is used to support the steel pipe and provide local reinforcement to the cylinder.

[0013] Preferably, the bottom end of the supporting steel pipe is provided with a base plate.

[0014] Preferably, the top of the steel pipe is provided with a cover plate. The cover plate can prevent outdoor rainwater from entering the steel pipe and also ensures an aesthetically pleasing and clean appearance.

[0015] Preferably, the outer perimeter of the top of the cylinder is provided with vertical support channels, and the upper edge of the support channels is flush with the upper edge of the cylinder without continuous gaps.

[0016] Preferably, a steel frame is provided across the supporting channel steel.

[0017] Preferably, the steel frame has a connecting plate at its center.

[0018] Preferably, a motor is provided on the connecting plate, and the top end of the stirring shaft passes through the connecting plate and is rotatably connected to the motor. The motor adopts frequency conversion control.

[0019] Preferably, one end of the scraper is fixedly connected to the hub sleeved on the stirring shaft.

[0020] Preferably, the scraper is arc-shaped, perpendicular to the liquid surface, and protrudes in the opposite direction to the rotation of the stirring shaft. Arc-shaped scrapers are more efficient at scraping slag compared to other shapes.

[0021] Preferably, the height of the scraper blade is 80-90 mm.

[0022] Preferably, the shortest distance between the outer end of the scraper and the outer end of the separation baffle is 20-60 mm. Maintaining a certain distance prevents the scraper from colliding with the separation baffle.

[0023] Preferably, the height of the wheel hub above the liquid surface is adjusted up or down or fixed by an adjustable bolt.

[0024] Preferably, the bottom plate of the chute is spirally descending from the end point of the rotation direction of the stirring shaft to the starting point.

[0025] Preferably, the helix angle of the chute bottom plate is 3 to 5°. The helix angle of the chute bottom plate forms a gentle slope with a certain inclination, which allows the separated foam scum to overflow quickly to the next stage extrusion equipment.

[0026] Preferably, a supporting rib is provided between the bottom plate of the chute and the cylinder.

[0027] Preferably, the separation baffle is perpendicular to the liquid surface and tilted in the opposite direction to the rotation of the stirring shaft. This allows the foam and scum scraped off by the scraper to be intercepted at the separation baffle, thus quickly overflowing into the chute.

[0028] Preferably, the tangential angle at the contact point between the separation baffle and the cylinder is 30 to 50°.

[0029] Preferably, the feed inlet is horizontally tangential to the cylinder and feeds in the opposite direction to the rotation direction of the stirring shaft. This tangential and regular dispersion of the fine-screened tailings slurry into the cylinder creates a regular vortex in the fluid, saving stirring power while allowing foam particles to rise quickly and efficiently under the influence of the fluid and gravity, achieving highly efficient separation.

[0030] Preferably, the distance between the feed inlet and the continuous notch is equivalent to 1 / 3 to 2 / 3 of the cylinder height. The foam particles in the fine-screened tailings slurry experience relatively little gravity; if the feed inlet is too far from the upper edge of the cylinder, they will not easily float.

[0031] The beneficial effects of this utility model are as follows: (1) The fiber foam separator of this utility model is optimized and integrated to form a complete set of domestic fine screening tail residue recycling system that can be promoted and applied. It has a good separation effect on foam scum and can efficiently recover fiber raw materials, realizing the efficient utilization of fibers in the waste paper pulping process. (2) The fiber foam separator of this utility model saves energy and reduces consumption, greatly reduces labor and raw material costs, and greatly improves the on-site operating environment, reduces environmental pollution, and solves the problem of tailings treatment in the industry. (3) The fiber foam separator of this utility model has very important application value, and the industrialization of the technological achievement has significant economic, environmental and social benefits. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the fiber foam separator of this utility model; Figure 2 This is a rear longitudinal section schematic diagram of Embodiment 1 of the fiber foam separator of this utility model; Figure 3 This is a top view of Embodiment 1 of the fiber foam separator of this utility model; Figure 4 This is a cross-sectional view of the feed inlet in Embodiment 1 of the fiber foam separator of this utility model; Figure 5 yes Figure 1 Enlarged view of the structure at point A and its right view; The attached figures are labeled as follows: Cylinder 1, continuous notch 1-1, separation baffle 1-2, feed inlet 1-3, reinforcing angle steel 1-4, level gauge interface 1-5, support channel steel 1-6, steel frame 1-7, connecting plate 1-8, support rib 1-9; 2. Stirring shaft, 2-1. Stirring blade, 2-2. Slag scraper, 2-3. Motor, 2-4. 3 chute, 3-1 chute bottom plate, 3-2 chute side plate, 3-3 overflow port; Cone 4, discharge port 4-1, reinforcing flat steel 4-2, pad 4-3, supporting steel pipe 4-4, bottom plate 4-4-1, cover plate 4-4-2. Detailed Implementation

[0033] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0034] Example 1 like Figures 1-5 As shown, a fiber foam separator includes: a cylindrical body 1; a stirring shaft 2 is provided in the middle of the cylindrical body 1; stirring blades 2-1 are provided at the bottom end of the stirring shaft 2; a continuous notch 1-1 is provided at the top of a portion of the cylindrical body 1; a scraper 2-2 is provided at the upper part of the stirring shaft 2, flush with the upper edge of the continuous notch 1-1; a chute 3 is provided on the cylindrical body 1 outside the continuous notch 1-1; the bottom of the chute 3 is a chute bottom plate 3-1, and a chute side plate 3-2 is provided around the chute bottom plate 3-1, with the upper edge of the chute side plate 3-2 flush with the top end of the cylindrical body 1; the chute bottom plate 3-1 is spirally descending from one end of the continuous notch 1-1 to the other end, and an overflow port 3-3 is provided at the lowest point; a separation baffle 1-2 extending inward is provided on the inner side of the continuous notch 1-1; and a feed inlet 1-3 is provided in the middle region of the cylindrical body 1.

[0035] The cylinder 1 without a continuous notch 1-1 and the chute side plate 3-2 are both provided with reinforcing angle steel 1-4; the lower part of the cylinder 1 is provided with a level gauge interface 1-5; the cylinder 1 is connected to a cone 4; the bottom of the cone 4 is provided with a discharge port 4-1; the outer side of the cone 4 is provided with reinforcing flat steel 4-2 along the generatrix; a pad 4-3 is provided at the junction of the cylinder 1 and the cone 4, and a supporting steel pipe 4-4 with an end-cut shape adapted to it is provided on the pad 4-3; the bottom end of the supporting steel pipe 4-4 is provided with a bottom plate 4-4-1; the top end of the steel pipe 4-4 is provided with a cover plate 4-4-2.

[0036] The cylinder 1 has vertical support channels 1-6 around its outer perimeter at the top, with the upper edge of the support channels 1-6 flush with the upper edge of the cylinder 1 without any continuous gaps. A steel frame 1-7 spans the support channels 1-6. A connecting plate 1-8 is located at the center of the steel frame 1-7. A motor 2-3 is mounted on the connecting plate 1-8, and the top of the stirring shaft 2 passes through the connecting plate 1-8 and is rotatably connected to the motor 2-3. The motor 2-3 is frequency-controlled. One end of the scraper 2-2 is fixedly connected to the hub 2-4 fitted onto the stirring shaft 2. The scraper 2-2 is arc-shaped, perpendicular to the liquid surface, and protrudes in the opposite direction to the rotation of the stirring shaft 2. The height of the scraper 2-2 is 80mm. The shortest distance between the outer end of the scraper 2-2 and the outer end of the separation baffle 1-2 is 40mm. The height of the hub 2-4 from the liquid surface is adjusted or fixed by adjustable bolts.

[0037] The bottom plate 3-1 of the chute is spirally descending from the end point to the starting point in the rotation direction of the stirring shaft 2; the spiral angle of the bottom plate 3-1 is 4°; a supporting rib 1-9 is provided between the bottom plate 3-1 and the cylinder 1; the separation baffle 1-2 is perpendicular to the liquid surface and tilted in the opposite direction to the rotation direction of the stirring shaft 2; the tangential angle of the contact point between the separation baffle 1-2 and the cylinder 1 is 40°.

[0038] The feed inlet 1-3 is arranged horizontally and tangentially relative to the cylinder 1, and feeds material in the opposite direction to the rotation direction of the stirring shaft 2; the distance between the feed inlet 1-3 and the continuous notch 1-1 is equivalent to 1 / 3 of the height of the cylinder 1.

[0039] The working process of this fiber foam separator embodiment is as follows: Fine screening tailings slurry is injected into cylinder 1 through feed inlet 1-3 in the middle of cylinder 1. At the same time, stirring shaft 2 is turned on. When scraper 2-2 is partially submerged in the fine screening tailings slurry, the foamy scum floating in the fine screening tailings slurry is scraped towards the inner wall of cylinder 1 by the rotating scraper 2-2. The foamy scum is blocked by the separation baffle 1-2 on the inner side of the continuous notch 1-1 and overflows into chute 3. Finally, it is discharged to the next stage extrusion equipment through overflow port 3-3.

Claims

1. A fiber foam separator, characterized in that, include: cylindrical body; A stirring shaft is provided in the middle of the cylinder; stirring blades are provided at the bottom end of the stirring shaft; a continuous notch is provided at the top of part of the cylinder; a scraper is provided at the upper part of the stirring shaft, flush with the upper edge of the continuous notch; a chute is provided on the cylinder outside the continuous notch; the bottom of the chute is a chute bottom plate, and a chute side plate is provided around the chute bottom plate, with the upper edge of the chute side plate flush with the top of the cylinder; the chute bottom plate is spirally descending from one end of the continuous notch to the other end, and an overflow port is provided at the lowest point; an inwardly extending separation baffle is provided inside the continuous notch; a feed inlet is provided in the middle area of ​​the cylinder.

2. The fiber foam separator according to claim 1, characterized in that: The upper edge of the cylinder without continuous notches and the upper edge of the chute side plate are both provided with reinforcing angle steel; the lower part of the cylinder is provided with a level gauge interface; the lower part of the cylinder is connected to a cone; the bottom of the cone is provided with a discharge port; the outer side of the cone is provided with reinforcing flat steel along the generatrix; a pad is provided at the junction of the cylinder and the cone, and a supporting steel pipe with an end-cut shape adapted to it is provided on the pad; the bottom end of the supporting steel pipe is provided with a base plate; the top end of the steel pipe is provided with a cover plate.

3. The fiber foam separator according to claim 1 or 2, characterized in that: The outer perimeter of the top of the cylinder is provided with vertical support channels, and the upper edge of the support channels is flush with the upper edge of the cylinder without continuous gaps. A steel frame spans the support channels. A connecting plate is provided at the center of the steel frame. A motor is provided on the connecting plate, and the top of the stirring shaft passes through the connecting plate and is rotatably connected to the motor. One end of the scraper is fixedly connected to the hub sleeved on the stirring shaft. The scraper is arc-shaped, perpendicular to the liquid surface, and protrudes in the opposite direction of the stirring shaft's rotation. The height of the scraper is 80-90mm. The shortest distance between the outer end of the scraper and the outer end of the separation baffle is 20-60mm. The height of the hub from the liquid surface is adjusted up and down or fixed by adjustable bolts.

4. The fiber foam separator according to claim 1 or 2, characterized in that: The bottom plate of the chute is spirally descending from the end point to the starting point in the direction of rotation of the stirring shaft; the spiral angle of the bottom plate of the chute is 3 to 5°; a supporting rib is provided between the bottom plate of the chute and the cylinder; the separation baffle is perpendicular to the liquid surface and tilted in the opposite direction of rotation of the stirring shaft; the tangential angle of the contact point between the separation baffle and the cylinder is 30 to 50°.

5. The fiber foam separator according to claim 3, characterized in that: The bottom plate of the chute is spirally descending from the end point to the starting point in the direction of rotation of the stirring shaft; the spiral angle of the bottom plate of the chute is 3 to 5°; a supporting rib is provided between the bottom plate of the chute and the cylinder; the separation baffle is perpendicular to the liquid surface and tilted in the opposite direction of rotation of the stirring shaft; the tangential angle of the contact point between the separation baffle and the cylinder is 30 to 50°.

6. The fiber foam separator according to claim 1 or 2, characterized in that: The feed inlet is horizontally tangential to the cylinder and feeds material in the opposite direction to the rotation direction of the stirring shaft; the distance between the feed inlet and the continuous notch is equivalent to 1 / 3 to 2 / 3 of the cylinder height.

7. The fiber foam separator according to claim 3, characterized in that: The feed inlet is horizontally tangential to the cylinder and feeds material in the opposite direction to the rotation direction of the stirring shaft; the distance between the feed inlet and the continuous notch is equivalent to 1 / 3 to 2 / 3 of the cylinder height.

8. The fiber foam separator according to claim 4, characterized in that: The feed inlet is horizontally tangential to the cylinder and feeds material in the opposite direction to the rotation direction of the stirring shaft; the distance between the feed inlet and the continuous notch is equivalent to 1 / 3 to 2 / 3 of the cylinder height.

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