A pulp purification device

Abstract

The utility model discloses a paper pulp purification device belongs to paper production technical field, and it is designed to solve the technical problem of paper pulp purification device under prior art needs frequent shutdown and clears up screen plate, and paper pulp purification efficiency is low. The paper pulp purification device includes purification jar, feed cylinder and scraper, and the bottom of purification jar is provided with screen plate, is used for separating paper pulp impurity and fiber, the feed cylinder is set above purification jar, and the bottom of feed cylinder is communicated with the conveying pipe between purification jar, is used for conveying paper pulp to the inside of purification jar, the scraper is set above screen plate and is contacted with the upper surface of screen plate, the axle rod is arranged in the inside of purification jar, and the bottom of axle rod is connected with scraper, and the motor that is used for driving axle rod and scraper rotation is set up on the feed cylinder. The paper pulp purification device can separate the impurity and fiber in paper pulp effectively, has anti -blocking function simultaneously, reduces screen plate cleaning frequency, guarantees the continuity and stability of paper pulp purification, and improves purification effect.

Description

Technical Field

[0001] This utility model belongs to the field of paper production technology, and specifically relates to a pulp purification device. Background Technology

[0002] In the papermaking industry, pulp purification is a key step in ensuring paper quality. Its core objective is to efficiently separate various impurities from the pulp, such as fiber bundles, plastic fragments, and sand particles, in order to obtain a pure fiber suspension and provide high-quality raw materials for subsequent papermaking processes.

[0003] However, the separation efficiency of traditional pulp purification devices in the impurity separation stage needs improvement. Although some purification devices are equipped with separation components such as screens, impurities easily accumulate and clog the screen holes during operation. Once the screen holes are clogged, the pulp cannot pass through the screen smoothly, leading to interruptions in the purification process and requiring frequent shutdowns to clean the screens. This not only increases production time and labor costs but also reduces the continuous operation capability of the equipment, failing to meet the high-efficiency and stable requirements of large-scale industrial production. Therefore, this application proposes a pulp purification device. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a pulp purification device, which aims to solve the technical problems of the need for frequent shutdowns to clean the screen plates and the low pulp purification efficiency of the existing pulp purification device.

[0005] Technical solution

[0006] To solve the above-mentioned technical problems, this utility model provides a pulp purification device, including a purification cylinder, a feeding cylinder, and a scraper. A screen plate is provided at the bottom of the purification cylinder for separating pulp impurities and fibers. The feeding cylinder is located above the purification cylinder, and a conveying pipe is connected between the bottom of the feeding cylinder and the purification cylinder for conveying pulp into the purification cylinder. The scraper is located above the screen plate and in contact with the upper surface of the screen plate. A shaft is inserted inside the purification cylinder, and the bottom end of the shaft is connected to the scraper. A motor is provided on the feeding cylinder for driving the shaft and the scraper to rotate.

[0007] Preferably, the top of the purification cylinder and the bottom of the feeding cylinder are both configured as conical structures.

[0008] Preferably, a horizontal plate is provided at the top of the feeding cylinder, the motor is mounted on the horizontal plate, the top of the shaft extends into the feeding cylinder through the conveying pipe and is rotatably mounted on the horizontal plate, and the shaft is connected to the output shaft of the motor.

[0009] Preferably, the portion of the shaft located inside the conveying pipe is provided with helical blades, with the top and bottom ends of the helical blades extending into the feeding cylinder and the purification cylinder, respectively.

[0010] Preferably, a lower frame plate is fixedly fitted on the purification cylinder, an upper frame plate is fixedly fitted on the feeding cylinder, multiple connecting columns are vertically connected between the lower frame plate and the upper frame plate, and multiple support columns are vertically arranged at the bottom of the lower frame plate.

[0011] Preferably, the bottom of the purification cylinder is provided with an assembly ring, the sieve plate is embedded in the assembly ring, the inner wall of the assembly ring is provided with a retaining ring for supporting the sieve plate, the bottom end of the purification cylinder is provided with an inner ring plate embedded in the assembly ring, and the sieve plate is clamped between the inner ring plate and the retaining ring.

[0012] Preferably, the outer wall of the purification cylinder and the outer wall of the assembly ring are both provided with lugs, and a pair of lugs are bolted together.

[0013] Preferably, the scraper blades are radially distributed along the shaft, and the scraper blades are curved in an arc shape, with the end of the scraper blade away from the shaft blades sliding in contact with the inner wall of the inner ring plate.

[0014] Beneficial effects

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention effectively separates impurities and fibers from pulp by setting up a sieve plate. At the same time, the scraper rotates under the drive of the shaft to scrape the sieve plate, preventing impurities from accumulating and clogging the sieve holes, reducing the frequency of sieve plate cleaning, ensuring the continuity and stability of pulp purification, and improving the purification effect.

[0017] In this invention, the spiral blades on the shaft can accelerate the speed at which the pulp enters the purification cylinder from the feed cylinder through the conveying pipe, thereby improving the pulp conveying efficiency, reducing the residence time of the pulp during the conveying process, and improving the overall efficiency of the purification process. Attached image description:

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the purification cylinder and the feeding cylinder in this utility model;

[0021] Figure 3 This is a schematic diagram of the scraper blade in this utility model;

[0022] Figure 4 This utility model Figure 2 Enlarged view of point A in the image.

[0023] The markings in the attached diagram are as follows: 1. Purification cylinder; 2. Feeding cylinder; 3. Conveying pipe; 4. Horizontal plate; 5. Motor; 6. Lower frame plate; 7. Upper frame plate; 8. Connecting column; 9. Support column; 10. Screen plate; 11. Shaft; 12. Scraper; 13. Spiral blade; 14. Assembly ring; 15. Inner ring plate; 16. Ear block; 17. Retaining ring. Detailed Implementation

[0024] 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.

[0025] This embodiment provides a pulp purification device, the structural schematic diagram of which is shown below. Figures 1-4 As shown, it includes a purification cylinder 1, a feeding cylinder 2, and a scraper 12.

[0026] In this embodiment, the purification cylinder 1 serves as the main container for pulp purification. Both its top and the bottom of the feeding cylinder 2 are designed with conical structures, which facilitates the flow of pulp and the separation of impurities within the device. The feeding cylinder 2 is positioned above the purification cylinder 1, and the purification cylinder 1 and the feeding cylinder 2 are connected by a conveying pipe 3, which is used to convey the pulp in the feeding cylinder 2 towards the purification cylinder 1.

[0027] Furthermore, a screen plate 10 is provided at the bottom of the purification cylinder 1 for separating impurities and fibers from the pulp. A scraper 12 is provided above the screen plate 10 and in contact with its upper surface. A central shaft 11 passes through the purification cylinder 1, with its bottom end connected to the scraper 12. A horizontal plate 4 is provided at the top of the feeding cylinder 2, and a motor 5 is mounted on the horizontal plate 4. The top end of the shaft 11 extends into the feeding cylinder 2 through the conveying pipe 3 and is rotatably mounted on the horizontal plate 4. At the same time, the shaft 11 is connected to the output shaft of the motor 5, driving the shaft 11 and the scraper 12 to rotate through the motor 5.

[0028] Furthermore, the portion of the shaft 11 located inside the conveying pipe 3 is equipped with helical blades 13, with the top and bottom ends of the helical blades 13 extending into the feed cylinder 2 and the purification cylinder 1, respectively. When the shaft 11 rotates, the helical blades 13 also rotate, which can accelerate the speed at which the pulp enters the purification cylinder 1 from the feed cylinder 2 through the conveying pipe 3, increase the pulp purification pressure, and at the same time play a certain role in stirring the pulp, making the pulp more uniform.

[0029] Furthermore, in this embodiment, an assembly ring 14 is provided at the bottom of the purification cylinder 1, and the sieve plate 10 is embedded in the assembly ring 14. A retaining ring 17 for supporting the sieve plate 10 is provided on the inner wall of the assembly ring 14. The inner ring plate 15 at the bottom of the purification cylinder 1 is embedded in the assembly ring 14, and the sieve plate 10 is clamped between the inner ring plate 15 and the retaining ring 17. This assembly method facilitates the installation and disassembly of the sieve plate 10, and makes it convenient to clean and replace the sieve plate 10. Lugs 16 are provided on both the outer wall of the purification cylinder 1 and the outer wall of the assembly ring 14. A pair of lugs 16 are connected by bolts, which further strengthens the connection between the assembly ring 14 and the purification cylinder 1.

[0030] In this embodiment, the scraper blades 12 are radially distributed along the shaft 11 and are curved in an arc shape. The end of the scraper blade 12 away from the shaft 11 slides in contact with the inner wall of the inner ring plate 15, which is embedded in the bottom of the purification cylinder 1. The bottom end of the shaft 11 is connected to the scraper blades 12. When the shaft 11 rotates, it can drive the scraper blades 12 to rotate and scrape on the upper surface of the sieve plate 10, preventing impurities from clogging the sieve holes of the sieve plate 10 and preventing impurities from adhering to the inner wall of the inner ring plate 15, thus reducing the frequency of sieve plate cleaning.

[0031] Furthermore, in this embodiment, a lower frame plate 6 is fixedly fitted onto the purification cylinder 1, and an upper frame plate 7 is fixedly fitted onto the feeding cylinder 2. Multiple connecting columns 8 are vertically connected between the lower frame plate 6 and the upper frame plate 7, serving to support and fix the relative positions of the feeding cylinder 2 and the purification cylinder 1. Multiple support columns 9 are vertically arranged at the bottom of the lower frame plate 6 to support the entire device on the ground, ensuring the stability of the device.

[0032] Working principle:

[0033] In operation, the pulp to be purified is first poured into the feed cylinder 2, and the motor 5 is started. The motor 5 drives the shaft 11 to rotate. The spiral blades 13 on the shaft 11 rotate accordingly, accelerating the transport of the pulp in the feed cylinder 2 to the purification cylinder 1 through the conveying pipe 3. The pulp entering the purification cylinder 1 flows downwards under the influence of gravity and the conveying action of the spiral blades 13. When passing through the screen plate 10, the fibers in the pulp can pass through the screen holes of the screen plate 10, while impurities are trapped on the screen plate 10. Simultaneously, the shaft 11 drives the scraper 12 to rotate and scrape the upper surface of the screen plate 10, preventing impurities from accumulating and clogging the screen holes, reducing the cleaning frequency of the screen plate 10, and ensuring that the pulp can continuously and smoothly pass through the screen plate 10 for separation. The purified pulp flows out from the bottom of the purification cylinder 1, while the impurities remain inside. The screen plate 10 can be replaced and cleaned later by removing the assembly ring 14 from the bottom of the purification cylinder 1.

[0034] All technical features in this embodiment can be freely combined according to actual needs.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pulp purification device, characterized in that, include: Purification tank (1), the bottom of which is provided with a sieve plate (10) for separating pulp impurities and fibers; Feeding cylinder (2), the feeding cylinder (2) is set above the purification cylinder (1), and a conveying pipe (3) is connected between the bottom of the feeding cylinder (2) and the purification cylinder (1) for conveying pulp into the purification cylinder (1); The scraper (12) is positioned above the sieve plate (10) and in contact with the upper surface of the sieve plate (10). A shaft (11) is inserted inside the purification cylinder (1), and the bottom end of the shaft (11) is connected to the scraper (12). A motor (5) is provided on the feeding cylinder (2) for driving the shaft (11) and the scraper (12) to rotate.

2. The pulp purification device according to claim 1, characterized in that, The top of the purification cylinder (1) and the bottom of the feeding cylinder (2) are both configured as cone-shaped structures.

3. The pulp purification device according to claim 2, characterized in that, The top of the feeding cylinder (2) is horizontally provided with a horizontal plate (4), the motor (5) is mounted on the horizontal plate (4), the top of the shaft (11) passes through the conveying pipe (3) and extends into the feeding cylinder (2) and is rotatably mounted on the horizontal plate (4), and the shaft (11) is connected to the output shaft of the motor (5).

4. The pulp purification device according to claim 3, characterized in that, The portion of the shaft (11) located inside the conveying pipe (3) is provided with a spiral blade (13), the top and bottom ends of which extend into the feed cylinder (2) and the purification cylinder (1), respectively.

5. The pulp purification device according to claim 1, characterized in that, The purification cylinder (1) is fixedly fitted with a lower frame plate (6), the feeding cylinder (2) is fixedly fitted with an upper frame plate (7), and multiple connecting columns (8) are vertically connected between the lower frame plate (6) and the upper frame plate (7). Multiple support columns (9) are vertically arranged at the bottom of the lower frame plate (6).

6. The pulp purification device according to claim 1, characterized in that, The bottom of the purification cylinder (1) is provided with an assembly ring (14), the sieve plate (10) is embedded in the assembly ring (14), the inner wall of the assembly ring (14) is provided with a retaining ring (17) for supporting the sieve plate (10), the bottom end of the purification cylinder (1) is provided with an inner ring plate (15) embedded in the assembly ring (14), and the sieve plate (10) is sandwiched between the inner ring plate (15) and the retaining ring (17).

7. A pulp purification device according to claim 6, characterized in that, The outer wall of the purification cylinder (1) and the outer wall of the assembly ring (14) are both provided with ear blocks (16), and a pair of ear blocks (16) are bolted together.

8. The pulp purification device according to claim 7, characterized in that, The scraper (12) is radially distributed along the shaft (11), and the scraper (12) is curved in an arc shape. The end of the scraper (12) away from the shaft (11) slides in contact with the inner wall of the inner ring plate (15).

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