Kraft pulp slurry filtration apparatus

Abstract

This utility model discloses a kraft paper pulp filtering device, relating to the technical field of pulp processing equipment. It includes a filter box with a feed pipe fixedly connected to its top. A fixed box is fixedly connected inside the filter box, and two movable seats are rotatably connected inside. Filter screens are embedded inside the movable seats. Pulp is injected into the filter box through the feed pipe, and the pulp is filtered through the filter screens inside the movable seats. The pulp remains on the outer surface of the filter screens. After the water drains, a flipping mechanism drives the two movable seats to flip towards the fixed box, causing the two filter screens to press against two scraper plates. A sliding lifting plate scrapes off the pulp remaining on the filter screens and collects it inside the fixed box. After cleaning, the flipping mechanism drives the filter screens to flip back to their original position for reuse. This device is easy to operate and improves the efficiency of pulp collection.

Description

Technical Field

[0001] This utility model relates to the technical field of pulp processing equipment, specifically a kraft paper pulp filtration device. Background Technology

[0002] Kraft paper, used as packaging material, has high strength and is usually yellowish-brown. Semi-bleached or fully bleached kraft pulp is light brown, cream, or white. Its basis weight is 80-120 g / m2, and its breaking length is generally over 6000 m. It has high tear strength, bursting energy, and dynamic strength. It is mostly produced in rolls, but also in sheets. It is made from sulfate softwood pulp, which is beaten and formed on a fourdrinier paper machine. Pulp filtration refers to the equipment that separates the pulp into water and pulp through a filter screen to control the concentration of the pulp.

[0003] Chinese Patent Publication No. CN205313910U discloses a kraft paper pulp filtration device, characterized in that it includes a buffer tank, a filter screen, a guide plate, a water collection tank, and a liquid collection tank. A direct current pipe is provided below the buffer tank, and a switch valve is installed at the outlet of the direct current pipe. The buffer tank has an opening. A support plate is also provided below the buffer tank, and the support plate is connected to the buffer tank via a support frame. A buffer slide is provided at the opening of the buffer tank, and the buffer slide is connected to the filter screen. The bottom of the filter screen is connected to the liquid collection tank. A guide plate is provided below the filter screen, and the bottom of the filter screen is connected to the water collection tank. The guide plate is fixedly connected to the support plate. The liquid collection tank and the water collection tank have outlets below them.

[0004] However, the inventor of the above-mentioned device believes that it has certain defects. The above-mentioned device uses the method of suspending the filter screen so that the pulp stuck on the filter screen can slide off the filter screen by gravity, which is inefficient and affects the subsequent filtration efficiency of the pulp. Therefore, this utility model provides a kraft paper pulp filtration device. Utility Model Content

[0005] The purpose of this invention is to provide a kraft paper pulp filtration device to solve the problems mentioned in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a kraft paper pulp filtering device, comprising a filter box, a feeding pipe fixedly connected to the top of the filter box, a fixed box fixedly connected inside the filter box, two movable seats rotatably connected inside the filter box, filter screens embedded inside the movable seats, a back box fixedly connected to the back of the filter box, a flipping mechanism inside the back box for driving the two movable seats to flip towards the fixed box, a scraping assembly for scraping material from the filter screen inside the filter box, the scraping assembly including a sliding frame slidably connected to the top wall inside the filter box, a lifting plate fixedly connected to the bottom of the sliding frame, connecting slide rods slidably connected to both sides of the lifting plate, a scraping plate fixedly connected to one end of the connecting slide rod, and a spring sleeved on the connecting slide rod.

[0007] Preferably, the fixed box has water filtration chambers on both sides, and drain pipes are fixedly connected to both sides of the filter box. Water inside the water filtration chambers can be discharged by opening the valves on the drain pipes.

[0008] Preferably, the flipping mechanism includes a rack plate that slides inside the back box, the rotating shaft of the movable seat extends into the back box, and a connecting gear is fixedly connected to the rotating shaft end of the movable seat. The connecting gear meshes with the rack plate. By controlling the rack plate to descend, the meshing action of the rack plate and the connecting gear drives the two connecting gears to rotate toward the rack plate.

[0009] Preferably, a hydraulic rod is fixedly connected to the filter box, and the telescopic end of the hydraulic rod is fixedly connected to the rack plate. The rack plate is driven to slide by activating the hydraulic rod.

[0010] Preferably, a connecting rod is fixedly connected to the top of the rack plate, and a connecting groove is provided on the connecting rod. One end of the sliding frame slides inside the connecting groove. Through the connecting rod and the connecting groove, the rack plate is lowered a certain distance and then the sliding frame is pulled down.

[0011] Preferably, the lifting plate has side sliding grooves on both sides, and one end of the connecting slide rod is slidably connected inside the side sliding groove. The side sliding groove allows the connecting slide rod to slide stably on the side of the lifting plate.

[0012] Preferably, a receiving box is inserted inside the fixed box, and a pull block is fixedly connected to the receiving box to collect the slurry that falls into the receiving box.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This application injects slurry into the filter box through a feeding pipe. The slurry is filtered through a filter screen inside the movable seat. The slurry is retained on the outer surface of the filter screen. After the water drains, the two movable seats are driven to flip towards the fixed box by a flipping mechanism, so that the two filter screens are pressed against the two scraper plates respectively. The lifting plate slides down to scrape off the slurry retained on the filter screen and scrapes it into the fixed box for collection. After cleaning, the filter screen is flipped back to its original position by the flipping mechanism for filtration again. This device is easy to operate and improves the efficiency of slurry collection.

[0015] 2. This application uses a hydraulic rod to pull the rack plate downwards, and the meshing action of the rack plate and the connecting gear drives the two movable seats to flip towards the fixed box. The lifting plate is then driven to descend to scrape off the slurry retained on the surface of the filter screen. Attached Figure Description

[0016] Figure 1 This is a perspective view of a kraft paper pulp filtration device according to the present invention;

[0017] Figure 2 This is a sectional perspective view of the filter box of a kraft paper pulp filtration device according to the present invention;

[0018] Figure 3 This is a perspective view of the flipping mechanism structure of a kraft paper pulp filtration device according to the present invention;

[0019] Figure 4 This utility model relates to a kraft paper pulp filtration device. Figure 1 Enlarged view at point A;

[0020] Figure 5 This is a schematic diagram of the scraping mechanism of a kraft paper pulp filtration device according to the present invention.

[0021] The following are the labels in the diagram: 1. Filter box; 11. Injection pipe; 12. Fixed box; 13. Collection box; 14. Drain pipe; 2. Movable seat; 21. Connecting gear; 22. Rack plate; 23. Hydraulic rod; 3. Filter screen; 4. Lifting plate; 41. Side slide groove; 5. Connecting slide rod; 51. Spring; 6. Scraper; 7. Sliding frame; 8. Connecting rod; 81. Connecting slide groove. Detailed Implementation

[0022] 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.

[0023] Please refer to it again. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A kraft paper pulp filtration device includes a filter box 1. A feeding pipe 11 is fixedly connected to the top of the filter box 1, through which pulp is injected into the interior of the filter box 1. A fixed box 12 is fixedly connected inside the filter box 1. Two movable seats 2 are rotatably connected inside the filter box 1. Filter screens 3 are embedded inside the movable seats 2. The two filter screens 3 are located directly below the discharge end of the feeding pipe 11. The pulp is filtered through the filter screens 3, and the pulp is retained on the surface of the filter screens 3.

[0024] Please refer to it again. Figure 1 , Figure 2 andFigure 3 The fixed box 12 has water filtration chambers on both sides, and drain pipes 14 are fixedly connected to both sides of the filter box 1. Drain valves are fixedly connected to the drain pipes 14. The water filtered by the filter screen 3 flows into the water filtration chambers. The water is discharged by opening the valves on the drain pipes 14. A collection box 13 is inserted into the inside of the fixed box 12. A pull block is fixedly connected to the collection box 13. The collection box 13 is used to collect the slurry that falls into the fixed box 12. By pulling the collection box 13 out of the fixed box 12, it is easy to remove the filter box 1 from the inside of the filter box 1.

[0025] Please refer to it again. Figure 1 , Figure 2 and Figure 3 A back box is fixedly connected to the back of the filter box 1. Inside the back box is a flipping mechanism that drives two movable seats 2 to flip towards the fixed box 12. The flipping mechanism includes a rack plate 22 that slides inside the back box. The rotating shaft of the movable seat 2 extends into the back box. The two ends of the movable seat 2 are fixedly connected to the rotating shaft. One end of the movable seat 2 rotates inside the filter box 1 through the rotating shaft. A connecting gear 21 is fixedly connected to the rotating shaft end of the movable seat 2. The connecting gear 21 meshes with the rack plate 22. Both sides of the rack plate 22 are provided with teeth. A hydraulic rod 23 is fixedly connected to the filter box 1. The telescopic end of the hydraulic rod 23 is fixedly connected to the rack plate 22. By activating the hydraulic rod 23, the rack plate 22 is driven to slide downward. Under the meshing action of the rack plate 22 and the connecting gear 21, the two movable seats 2 are driven to flip towards the fixed box 12.

[0026] Please refer to it again. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The filter box 1 is equipped with a scraping assembly for scraping the filter screen 3. The scraping assembly includes a sliding frame 7 slidably connected to the top wall of the filter box 1. A lifting plate 4 is fixedly connected to the bottom of the sliding frame 7. The sliding frame 7 is a combination of two sliding rods and a crossbar. The lifting plate 4 is fixed to the bottom of the sliding rods. The sliding frame 7 is driven to move up and down, thereby moving the lifting plate 4 up and down inside the filter box 1. Connecting sliding rods 5 are slidably connected to both sides of the lifting plate 4. Side sliding grooves 41 are opened on both sides of the lifting plate 4. One end of the connecting rod 5 is slidably connected to the inside of the side slide groove 41. One end of the connecting rod 5 is fixedly connected to a scraper 6. A spring 51 is sleeved on the connecting rod 5. When the two movable seats 2 are rotated at a certain angle, they come into contact with the scraper 6 at one end of the connecting rod 5. By squeezing the spring 51, the connecting rod 5 is pushed to slide on the side of the lifting plate 4, so that one end of the scraper 6 is always in close contact with the filter screen 3. By controlling the lifting plate 4 to descend, the scraper 6 is driven to scrape off the slurry on the filter screen 3.

[0027] Please refer to it again. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A connecting rod 8 is fixedly connected to the top of the rack plate 22. A connecting groove 81 is provided on the connecting rod 8. One end of the sliding frame 7 slides inside the connecting groove 81. One end of the crossbar on the sliding frame 7 slides inside the connecting groove 81. When the rack plate 22 descends a certain distance, it drives the sliding frame 7 to slide down on the top of the filter box 1, so that the scraping mechanism slides down during the flipping process of the two movable seats 2.

[0028] Working principle: Install the device in a suitable location and connect it to the municipal power supply. Inject slurry into the filter box 1 through the injection pipe 11. The slurry flowing into the movable seat 2 is filtered by two filter screens 3. The filtered slurry remains on the surface of the filter screens 3. After the water drains, the hydraulic rod 23 pulls the rack plate 22 to slide down. Under the action of the rack plate 22 and the connecting gear 21, the two movable seats 2 are driven to flip inside the filter box 1 towards the fixed box 12, so that the filter screen 3 is connected to one end of the scraper plate 6. After the rack plate 22 descends a certain distance, the inner top wall of the connecting slide groove 81 abuts against one end of the sliding frame 7. The connecting rod 8 pulls the sliding frame 7 downward, causing the lifting plate 4 to slide down between the two movable seats 2. During the rotation of the two movable seats 2, the connecting slide rod 5 slides on the side of the lifting plate 4. The scraper plate 6 scrapes the filter screen 3 from top to bottom, scraping the slurry on the filter screen 3 into the collection box 13 for collection. Finally, the water is discharged by opening the valve on the drain pipe 14.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A kraft paper pulp filtration device, comprising a filter box (1), characterized in that: The top of the filter box (1) is fixedly connected to a material injection pipe (11), the inside of the filter box (1) is fixedly connected to a fixed box (12), the inside of the filter box (1) is rotatably connected to two movable seats (2), the inside of the movable seats (2) is inlaid with a filter screen (3), the back of the filter box (1) is fixedly connected to a back box, and the back box is provided with a flipping mechanism that drives the two movable seats (2) to flip towards the fixed box (12). The filter box (1) is equipped with a scraping assembly for scraping the filter screen (3). The scraping assembly includes a sliding frame (7) that is slidably connected to the top wall of the filter box (1). A lifting plate (4) is fixedly connected to the bottom of the sliding frame (7). A connecting slide rod (5) is slidably connected to both sides of the lifting plate (4). A scraping plate (6) is fixedly connected to one end of the connecting slide rod (5). A spring (51) is sleeved on the connecting slide rod (5).

2. The kraft paper pulp filtering device according to claim 1, characterized in that: The fixed box (12) is provided with water filtration chambers on both sides, and the filter box (1) is fixedly connected with drain pipes (14) on both sides.

3. The kraft paper pulp filtering device according to claim 1, characterized in that: The flipping mechanism includes a rack plate (22) that slides inside the back box. The pivot of the movable seat (2) extends into the back box. A connecting gear (21) is fixedly connected to the pivot end of the movable seat (2). The connecting gear (21) meshes with the rack plate (22).

4. The kraft paper pulp filtering device according to claim 3, characterized in that: A hydraulic rod (23) is fixedly connected to the filter box (1), and the telescopic end of the hydraulic rod (23) is fixedly connected to the rack plate (22).

5. The kraft paper pulp filtering device according to claim 4, characterized in that: A connecting rod (8) is fixedly connected to the top of the rack plate (22), and a connecting groove (81) is provided on the connecting rod (8). One end of the sliding frame (7) slides inside the connecting groove (81).

6. The kraft paper pulp filtering device according to claim 1, characterized in that: The lifting plate (4) has side sliding grooves (41) on both sides, and one end of the connecting rod (5) is slidably connected inside the side sliding groove (41).

7. The kraft paper pulp filtering device according to claim 1, characterized in that: A receiving box (13) is inserted inside the fixed box (12), and a pull block is fixedly connected to the receiving box (13).

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