A pulp dewatering device

Abstract

This utility model discloses a pulp dewatering device, belonging to the field of pulp dewatering technology. It includes a support frame, a first dewatering component, a belt, a second dewatering component, a pressing component, a feeding component, and a storage component. The first dewatering component includes two first rotating rollers. In this utility model, by setting up the first dewatering component, the second dewatering component, and the pressing component, several pressure rollers press the second conveyor belt under the action of spring force. The pressed second conveyor belt presses the pulp below it, allowing the liquid in the pulp to pass through the first conveyor belt and move into the storage tank. Furthermore, impurities attached to the surfaces of the first and second conveyor belts are scraped off by scrapers and fall into the receiving component below. When dewatering the pulp, the device automatically cleans the impurities attached to the surface of the dewatering structure, preventing blockage and ensuring efficient pulp dewatering.

Description

Technical Field

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

[0002] Pulp is an important raw material for papermaking. Pulping involves heating the raw material to a certain temperature to break down lignocellulose into fibers and separating the fibers from impurities. After papermaking, a large amount of wastewater is generated. This wastewater contains a lot of fibers, binders, and other materials, which need to be filtered and further treated. To improve separation efficiency, centrifugation is usually used. During high-speed rotation, the pulp is filtered to trap solid residue. However, as the rotation time increases, the residue trapped by the filter adheres to the filter, which can affect the liquid discharge and the dewatering efficiency of the pulp. Therefore, a pulp dewatering device is needed to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to provide a pulp dewatering device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a pulp dewatering device, comprising a support frame, a first dewatering component, a belt, a second dewatering component, a pressing component, a feeding component, and a storage component. The first dewatering component includes two first rotating rollers, which are rotatably connected within the support frame and driven by a first transmission belt. One of the first rotating rollers is connected to a motor.

[0005] The second dewatering assembly includes a drive roller, several driven rollers, and support rollers. The drive roller, several driven rollers, and support rollers are rotatably connected within a support frame. The drive roller is driven by the several driven rollers and support rollers via a second transmission belt.

[0006] Another first rotating roller is connected to the drive roller via a belt drive;

[0007] The extrusion assembly includes several slide rods, the bottom end of which is connected to a fixed frame. A spring is fitted over the slide rod, and the two ends of the spring are respectively connected to a support frame and a fixed frame. A pressure roller is rotatably connected inside the fixed frame, and the top ends of the slide rods are connected to the same movable plate.

[0008] As a preferred embodiment, the cross-sectional shape of the first conveyor belt is set to U-shape, and the second conveyor belt overlaps with the interior of the first conveyor belt.

[0009] As a preferred embodiment, the feeding assembly is connected to the support frame, and the feeding assembly is located between the first conveyor belt and the second conveyor belt, and the feeding assembly is a belt conveyor.

[0010] As a preferred embodiment, the storage assembly includes a storage box connected within a support frame, with a discharge pipe connected to the back of the storage box, and the storage box communicating with the discharge pipe.

[0011] As a preferred embodiment, several pressure rollers are arranged on one side of the feeding assembly, which is located below the idler rollers.

[0012] As a preferred embodiment, the second conveyor belt overlaps with the bottom of several pressure rollers.

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

[0014] This invention comprises a first dewatering component, a second dewatering component, and a pressing component. Several pressure rollers press a second conveyor belt under the action of spring force. The pressed second conveyor belt presses the pulp below it, allowing the liquid in the pulp to pass through the first conveyor belt and move into the storage tank. Meanwhile, impurities attached to the surfaces of the first and second conveyor belts are scraped off by scrapers and fall into the receiving component below. When dewatering the pulp, the device can automatically clean the impurities attached to the surface of the dewatering structure, making it less likely for the dewatering structure to be blocked and thus affecting its normal dewatering operation, thereby ensuring the dewatering efficiency of the pulp.

[0015] This invention incorporates springs, slide bars, movable plates, fixed frames, and pressure rollers. The elastic force of the springs varies depending on their distance from the rollers; the greater the distance, the greater the elastic force. Under the action of the spring force, the fixed frame can drive the pressure rollers to squeeze the pulp between the first and second conveyor belts, with the squeezing force increasing sequentially. This allows the water in the pulp to be gradually squeezed out as the force increases, thus improving the dewatering quality of the pulp. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention from the front view;

[0017] Figure 2 This is a rear-view three-dimensional structural schematic diagram of the present invention;

[0018] Figure 3 This is a frontal three-dimensional cross-sectional structural diagram of the present invention.

[0019] In the diagram: 1. Support frame; 2. First dewatering assembly; 21. First rotating roller; 22. First conveyor belt; 23. Motor; 3. Belt; 4. Second dewatering assembly; 41. Second conveyor belt; 42. Drive roller; 43. Driven roller; 44. Support roller; 5. Extrusion assembly; 51. Slide bar; 52. Fixed frame; 53. Spring; 54. Movable plate; 55. Pressure roller; 6. Feeding assembly; 7. Storage assembly; 71. Storage box; 72. Discharge pipe. Detailed Implementation

[0020] The present invention will be further described below with reference to the embodiments.

[0021] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0022] Please see Figure 1-3 This utility model provides a pulp dewatering device, including a support frame 1, a first dewatering component 2, a belt 3, a second dewatering component 4, a pressing component 5, a feeding component 6, and a storage component 7. The first dewatering component 2 includes two first rotating rollers 21, which are rotatably connected in the support frame 1. The two first rotating rollers 21 are connected by a first transmission belt 22, and one of the first rotating rollers 21 is connected to a motor 23.

[0023] The second dewatering assembly 4 includes a drive roller 42, several driven rollers 43 and a support roller 44. The drive roller 42, several driven rollers 43 and the support roller 44 are rotatably connected in the support frame 1. The drive roller 42 is connected to the several driven rollers 43 and the support roller 44 through the second transmission belt 41.

[0024] Another first rotating roller 21 is connected to the drive roller 42 via belt 3. By setting the first transmission belt 22, which is a transmission belt with filter holes, the first transmission belt 22 can also be used as a filter structure for pulp dewatering operation when conveying pulp.

[0025] The extrusion assembly 5 includes several slide rods 51. The bottom end of each slide rod 51 is connected to a fixed frame 52. A spring 53 is sleeved on each slide rod 51. The two ends of the spring 53 are connected to a support frame 1 and a fixed frame 52, respectively. A pressure roller 55 is rotatably connected inside the fixed frame 52. The top ends of the slide rods 51 are connected to the same movable plate 54. By setting the springs 53, the elastic force of the springs 53 varies according to their distance from the idler roller 44. The springs 53 closer to the idler roller 44 have a smaller elastic force, and the springs 53 further away from the idler roller 44 have a larger elastic force. The larger the distance from the idler roller 44, the greater the elastic force of the several springs 53, which are equipped with springs 53, slide bars 51, movable plates 54, fixed frames 52 and pressure rollers 55. The greater the distance from the idler roller 44, the greater the elastic force. Because the fixed frame 52 can drive the pressure roller 55 to squeeze the pulp between the first conveyor belt 22 and the second conveyor belt 41 under the action of the elastic force of the springs 53, and the squeezing force increases in sequence, the water in the pulp can be gradually squeezed out as the force increases, thus improving the dewatering quality of the pulp.

[0026] The first conveyor belt 22 has a U-shaped cross-section. The second conveyor belt 41 overlaps internally with the first conveyor belt 22. The feeding assembly 6 is connected to the support frame 1 and is located between the first conveyor belt 22 and the second conveyor belt 41. The feeding assembly 6 is a belt conveyor. However, by setting the feeding assembly 6, it can also be a screw conveyor or other feeding structure.

[0027] The storage component 7 includes a storage box 71, which is connected to the support frame 1. A discharge pipe 72 is connected to the back of the storage box 71, and the storage box 71 is connected to the discharge pipe 72. Several pressure rollers 55 are arranged on one side of the feeding component 6, which is located below the support roller 44. The second conveyor belt 41 overlaps with the bottom of the several pressure rollers 55. By setting a slide rod 51 and the support frame 1, the slide rod 51 can limit the fixed frame 52 because it is slidably connected inside the support frame 1. This prevents the fixed frame 52 from shaking during movement, and the pressure rollers 55 connected to the fixed frame 52 can move smoothly along the axial direction of the slide rod 51.

[0028] A receiving assembly is provided below the first conveyor belt 22. The receiving assembly is used to store the impurities that fall from the first conveyor belt 22 and the second conveyor belt 41. A scraper is provided on one side of the first conveyor belt 22 and the second conveyor belt 41. The scraper can scrape off the pulp impurities that have been squeezed and dewatered from the surface of the first conveyor belt 22 and the second conveyor belt 41.

[0029] The working principle and usage process of this utility model are as follows: When it is necessary to dewater the pulp, the pulp is first conveyed to the first conveyor belt 22 and the second conveyor belt 41 through the feeding component 6, and the pulp falls from one end of the feeding component 6 onto the surface of the first conveyor belt 22.

[0030] The working motor 23 drives one of the first rotating rollers 21 to rotate. The rotating first rotating roller 21 drives another first rotating roller 21 to rotate via the first conveyor belt 22. The other rotating first rotating roller 21 drives the drive roller 42 to rotate via the belt 3. The rotating drive roller 42 drives the second conveyor belt 41 to rotate outside of several driven rollers 43 and support rollers 44, so that the pulp moves between the first conveyor belt 22 and the second conveyor belt 41.

[0031] Several pressure rollers 55 squeeze the second conveyor belt 41 under the action of spring 53. The squeezed second conveyor belt 41 squeezes the pulp below it, so that the liquid in the pulp can pass through the first conveyor belt 22 and move into the storage box 71. The impurities attached to the surfaces of the first conveyor belt 22 and the second conveyor belt 41 are scraped off by the scrapers located at one end of the first dewatering component 2 and the second dewatering component 4 and fall into the receiving component below.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pulp dewatering device, comprising a support frame (1), a first dewatering component (2), a belt (3), a second dewatering component (4), a pressing component (5), a feeding component (6), and a storage component (7), characterized in that: The first dehydration assembly (2) includes two first rotating rollers (21), which are rotatably connected in the support frame (1). The two first rotating rollers (21) are connected by a first transmission belt (22), and one of the first rotating rollers (21) is connected to a motor (23). The second dewatering assembly (4) includes a drive roller (42), a plurality of driven rollers (43) and a support roller (44). The drive roller (42), the plurality of driven rollers (43) and the support roller (44) are rotatably connected in the support frame (1). The drive roller (42) is driven by the plurality of driven rollers (43) and the support roller (44) through a second transmission belt (41). Another first rotating roller (21) is connected to the drive roller (42) via a belt (3); The extrusion assembly (5) includes several slide rods (51), the bottom end of which is connected to a fixed frame (52). A spring (53) is fitted over the slide rod (51), and the two ends of the spring (53) are connected to a support frame (1) and a fixed frame (52) respectively. A pressure roller (55) is rotatably connected inside the fixed frame (52). The top ends of the several slide rods (51) are connected to the same movable plate (54).

2. A paper pulp dewatering device according to claim 1, characterized in that The cross-sectional shape of the first conveyor belt (22) is set to U-shape, and the second conveyor belt (41) overlaps with the inside of the first conveyor belt (22).

3. A paper pulp dewatering device according to claim 1, characterized in that: The feeding assembly (6) is connected to the support frame (1). The feeding assembly (6) is located between the first conveyor belt (22) and the second conveyor belt (41). The feeding assembly (6) is a belt conveyor.

4. The pulp dewatering device according to claim 1, characterized in that: The storage component (7) includes a storage box (71) connected inside the support frame (1), and a discharge pipe (72) is connected to the back of the storage box (71), and the storage box (71) is connected to the discharge pipe (72).

5. A paper pulp dewatering device according to claim 1, characterized in that: Several pressure rollers (55) are located on one side of the feeding assembly (6), which is located below the idler roller (44).

6. The pulp dewatering device according to claim 1, characterized in that: The second conveyor belt (41) overlaps with the bottom of several pressure rollers (55).

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