Paper pulp filter press

Abstract

A paper pulp filter press comprises a filter press main body and a circulating flushing assembly, the circulating flushing assembly is arranged on the filter press main body, the filter press main body comprises a conveying roller and a filter pressing roller, the conveying roller and the filter pressing roller are both fixedly arranged on the filter press main body, and the filter press main body is configured to drive the conveying roller and the filter pressing roller to rotate. Conveying filter cloth is arranged on the conveying rollers, and the conveying filter cloth is driven to convey paper pulp when rotating; and the circulating flushing assembly comprises a flushing nozzle which is arranged on the return stroke section of the conveying filter cloth. The filter cloth is prevented from being interfered in a slurry bearing area by arranging the flushing spray heads on the return stroke section for conveying the filter cloth, and meanwhile, the filter cloth is cleaned in a no-load state, so that the cleaning energy consumption is reduced, and the cleaning effect is improved, thereby realizing the online cleaning of the filter cloth, preventing the blockage problem and ensuring the stable and efficient operation of the filter pressing process.

Description

Technical Field

[0001] The present invention belongs to the technical field of pulp pressure filtration, and specifically refers to a pulp pressure filter. Background Art

[0002] A pulp pressure filter is a solid-liquid separation device commonly used in industries such as papermaking, chemical engineering, and environmental protection. It is mainly used to press and filter the moisture in the pulp to obtain pulp with a lower moisture content and improve the subsequent processing efficiency. Currently, common pulp pressure filters mostly use filter cloth as the filtration medium. During the filtration process, the liquid in the pulp passes through the filter cloth under pressure, while the solid pulp remains on the surface of the filter cloth to form a filter cake.

[0003] In the actual application process, due to the large amount of fine fibers and impurities in the pulp, the filter cloth is extremely prone to clogging after long-term use, resulting in a decrease in filtration efficiency, affecting the pressure filtration effect and work rhythm. In order to remove the residual pulp or impurities on the filter cloth, some existing pressure filter designs are equipped with cleaning and scraping mechanisms, such as mechanical scraper devices, etc., for periodic or continuous cleaning of the filter cloth.

[0004] However, the above cleaning mechanism has problems such as complex structure and inconvenient maintenance, increasing the complexity of the overall machine structure. It not only occupies a large space but also has problems such as fast wear and high failure rate during operation, affecting the stability and service life of the equipment. Summary of the Invention

[0005] In view of the above situation, to overcome the defects of the prior art, the present invention provides a pulp pressure filter to at least partially solve the above technical problems.

[0006] The technical solution adopted by the present invention is as follows: The present invention provides a pulp pressure filter, including a pressure filter main body and a circulating flushing assembly, and the circulating flushing assembly is arranged on the pressure filter main body; the pressure filter main body includes a conveying roller and a pressure filtering roller, both the conveying roller and the pressure filtering roller are fixedly arranged on the pressure filter main body, the pressure filter main body is configured to drive the conveying roller and the pressure filtering roller to rotate, a conveying filter cloth is arranged on the conveying roller, and the conveying filter cloth drives the conveying of the pulp when rotating; the circulating flushing assembly includes a flushing nozzle, and the flushing nozzle is arranged on the return section of the conveying filter cloth.

[0007] Furthermore, the circulating flushing assembly includes a pressurized water pump and a water tank, the water tank is arranged below the conveying filter cloth, the pressurized water pump is arranged on the water tank and communicated with the flushing nozzle; a filter is arranged in the water tank, and the filter is arranged at the connection position between the water tank and the pressurized water pump.

[0008] Further, the circulating flushing assembly includes a light transmittance detector which is arranged on both sides of the conveying filter cloth, and the light transmittance detector is configured to detect the light transmittance of the conveying filter cloth; the light transmittance detector is electrically connected to the pressure pump, and the light transmittance detector controls the start and stop of the pressure pump.

[0009] Further, the filter press main body includes a filter press bracket, the conveying roller and the filter press roller are rotatably arranged on the filter press bracket, a conveying motor and a filter press motor are arranged on the filter press bracket, the conveying motor is configured to drive the conveying roller to rotate, and the filter press motor is configured to drive the filter press roller to rotate; a filter press filter cloth is arranged on the filter press roller, and the filter press roller drives the filter press filter cloth to move when rotating.

[0010] Further, the filter press main body includes a tensioning roller and a pneumatic lifting rod, the tensioning roller is rotatably arranged on the pneumatic lifting rod, the pneumatic lifting rod is arranged on the filter press bracket, the surface of the tensioning roller contacts the conveying filter cloth, and the pneumatic lifting rod is configured to drive the tensioning roller to lift.

[0011] Further, a feeding bin is further included, the feeding bin is arranged on one side of the filter press main body, a feeding port is arranged on the feeding bin, the position of the feeding port corresponds to the position of the conveying filter cloth, and the position of the feeding port is higher than the upper surface of the conveying filter cloth.

[0012] Further, a stirring rod is arranged inside the feeding bin, the stirring rod is rotatably connected to the feeding bin, and a material distributing rod is arranged on the surface of the stirring rod along the axis in a linear array.

[0013] Further, a discharging bin is further included, the discharging bin is arranged at the position of the filter press roller, a discharging roller is arranged inside the discharging bin, the discharging roller is rotatably connected to the discharging bin, and the discharging roller is configured to discharge the dry material inside the discharging bin.

[0014] Further, a receiving slope is arranged on the discharging bin, the receiving slope is tangent to the surface of the filter press roller, and guiding plates are symmetrically arranged on both sides of the receiving slope.

[0015] Compared with the prior art, the present invention has the following advantages: By arranging flushing nozzles on the return section of the conveying filter cloth, interference of the filter cloth in the slurry receiving area is avoided, and at the same time, the filter cloth is cleaned in the no-load state, saving cleaning energy consumption and improving the cleaning effect, so as to realize the on-line cleaning of the filter cloth, prevent the occurrence of blockage problems, and ensure the stable and efficient operation of the filter press process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a perspective view of the pulp filter press proposed by the embodiment of the present invention; Figure 2Rear view of the pulp filter press proposed in the embodiment of the present invention; Figure 3 Top view of the pulp filter press proposed in the embodiment of the present invention; Figure 4 Is Figure 3 The cross-sectional view along the A-A direction in; Figure 5 Cross-sectional view of the pulp filter press proposed in the embodiment of the present invention; Figure 6 Is Figure 5 The enlarged view at position I in;

[0017] Wherein, 100, filter press main body, 200, circulating flushing assembly, 300, feeding bin, 400, discharging bin, 101, conveying roller, 102, filtering roller, 103, tensioning roller, 104, filter press bracket, 105, conveying filter cloth, 106, conveying motor, 107, filtering filter cloth, 108, filtering motor, 109, pneumatic lifting rod, 201, flushing nozzle, 202, pressurized water pump, 203, water tank, 204, filter, 205, light transmittance detector, 301, feeding port, 302, stirring rod, 303, material distributing rod, 401, receiving ramp, 402, guiding plate, 403, discharging roller.

[0018] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention.

[0021] As Figures 1-6As shown in the figure, a pulp filter press proposed in this embodiment includes a filter press main body 100 and a circulating flushing assembly 200. The circulating flushing assembly 200 is arranged on the filter press main body 100 and is used to periodically or continuously clean the filter cloth of the filter press main body 100 to ensure that the filter cloth maintains good water permeability during long-term operation, extend the service life of the filter cloth, and improve the filtering efficiency.

[0022] Specifically, the filter press main body 100 includes a conveying roller 101 and a filtering roller 102. The conveying roller 101 and the filtering roller 102 are respectively arranged on the filter press main body 100 and are fixedly supported by a frame structure. A transmission assembly is arranged inside the filter press main body 100, which can drive the conveying roller 101 and the filtering roller 102 to rotate synchronously or differentially, so as to realize the continuous transmission and pressing treatment of pulp in the filtering area.

[0023] A conveying filter cloth 105 is wound around the conveying roller 101. The conveying filter cloth 105 forms a closed circular running path and continuously circulates under the drive of the roller, which is used to carry and convey pulp. The pulp is conveyed to the conveying filter cloth 105 through a feeding device and enters the filtering area between the conveying roller 101 and the filtering roller 102 along with the movement of the filter cloth. Under the squeezing action between the two rollers, the liquid part in the pulp is filtered and discharged by the filter cloth, thus forming a preliminarily dehydrated pulp filter cake. The conveying filter cloth 105 further conveys the filter cake downstream and enters the collection area.

[0024] To solve the problem that the filter cloth is easily blocked by pulp fibers and residues after long-term operation, this embodiment is equipped with a circulating flushing assembly 200. The circulating flushing assembly 200 includes a flushing nozzle 201. The flushing nozzle 201 is arranged on the return section of the conveying filter cloth 105, that is, the section where the filter cloth returns to the feeding end after completing the pulp-bearing and filtering operations. This section of the filter cloth no longer bears pulp, which is convenient for centralized cleaning.

[0025] The flushing nozzle 201 is connected to a high-pressure water source pipeline and can spray high-pressure water columns, which directly act on the conveying filter cloth 105 on the return section, scouring and stripping the pulp debris, fiber impurities, etc. attached to its surface. The flushing frequency and intensity can be set according to the working conditions to achieve automatic control, avoid manual intervention, and improve the operating efficiency.

[0026] By arranging the flushing nozzle 201 on the return section of the conveying filter cloth 105, the interference of the filter cloth in the pulp-bearing area is avoided, and at the same time, the filter cloth is cleaned in the no-load state, saving cleaning energy consumption and improving the cleaning effect, so as to realize the online cleaning of the filter cloth, prevent the occurrence of blockage problems, and ensure the stable and efficient operation of the filtering process.

[0027] The circulating flushing assembly 200 proposed in this embodiment further includes a pressurized water pump 202 and a water tank 203, which are used to realize the circulating cleaning of the filter cloth, reduce the waste of cleaning water, and improve the energy saving of the equipment operation.

[0028] Specifically, the water tank 203 is arranged below the return section of the conveying filter cloth 105, and is used to collect the cleaning water after being sprayed by the flushing nozzle 201, the water filtered out during the pressing of the pulp, and impurities such as pulp residues and water stains washed off the surface of the filter cloth. The water tank 203 has a long strip structure, and its length covers the return section of the conveying filter cloth 105, which is beneficial to receiving the liquid dripping below the cleaning area.

[0029] The pressurized water pump 202 is arranged on the side of the water tank 203 and is connected to the flushing nozzle 201 through a connecting pipe. The suction port of the pressurized water pump 202 is arranged in the water tank 203, and can suck the water collected in the water tank 203, and after pressurization, it is conveyed to the flushing nozzle 201 to realize the recycling of the cleaning water, thereby reducing the water resource consumption during the operation of the system.

[0030] In order to prevent impurities or pulp residues in the water from clogging or wearing the pressurized water pump 202, a filter 204 is provided at the connection position between the water tank 203 and the pressurized water pump 202. The filter 204 is used to preliminarily filter the solid particles and impurities in the recycled water to ensure the cleanliness of the water body entering the pressurized water pump 202, improve the system stability and service life. The filter 204 adopts a detachable structure, which is convenient for regular cleaning and maintenance.

[0031] The circulating flushing assembly 200 proposed in this embodiment further includes a light transmittance detector 205 to realize the real-time monitoring of the pollution degree of the conveying filter cloth 105 and the automatic control of the cleaning process, and further improve the intelligence level and operation efficiency of the equipment.

[0032] Specifically, the light transmittance detectors 205 are symmetrically arranged on both sides of the conveying filter cloth 105 in the area of its return section. The light transmittance detector 205 can adopt the infrared detection principle, and by emitting and receiving light signals on both sides of the filter cloth, it can judge the light transmittance of the filter cloth in real time. The filter cloth has a certain light transmission ability in the normal cleaning state; when a large amount of pulp residues or impurities adhere to the surface of the filter cloth, its light transmittance will decrease significantly.

[0033] There is an electrical connection between the light transmittance detector 205 and the pressurized water pump 202, and a closed-loop control system is formed. When the conveying filter cloth 105 is running in the return section, when the light transmittance detector 205 monitors that the light transmittance of the filter cloth is lower than the preset threshold, it is automatically determined that there is a blockage or pollution phenomenon on the filter cloth. At this time, the light transmittance detector 205 issues a control signal to start the pressurized water pump 202.

[0034] After receiving the working signal, the pressurized water pump 202 draws recycled water from the water tank 203 and pressurizes it to the flushing nozzle 201. The flushing nozzle 201 sprays high-pressure water flow to the surface of the filter cloth to quickly clean the filter cloth and remove pulp residues and impurities attached to the surface. When the transmittance returns to the normal range, the transmittance detector 205 controls the pressurized water pump 202 to stop working, completing an automatic cleaning.

[0035] Through the automatic detection and control mechanism, this embodiment not only improves the timeliness and effectiveness of filter cloth cleaning, avoids serious blockage of the filter cloth causing reduced filtration efficiency, but also reduces the waste of water resources and energy consumption caused by ineffective flushing, and is suitable for continuously operating pulp filter press conditions.

[0036] The filter press body 100 proposed in this embodiment includes a filter press bracket 104. The filter press bracket 104 serves as the skeleton structure of the entire machine and is used to support and fix various functional components to ensure the stability of the equipment operation and structural reliability during the filtration operation. The conveying roller 101 and the filter press roller 102 are both rotatably connected to the filter press bracket 104 through the bearing assembly to form a stable transmission structure.

[0037] A conveying motor 106 and a filter press motor 108 are provided on the filter press bracket 104. The conveying motor 106 is connected to the conveying roller 101 in a transmission manner to drive the conveying roller 101 to rotate continuously, thereby driving the conveying filter cloth 105 wrapped thereon to perform a cyclic conveying operation to achieve continuous transmission of pulp; the filter press motor 108 is connected to the filter press roller 102 in a transmission manner to drive the filter press roller 102 to rotate, so that the filter press cloth 107 on its surface can move synchronously with the rotation of the roller.

[0038] A filter cloth 107 is provided on the filter press roller 102. The filter cloth 107 is displaced as the filter press roller 102 rotates. When the pulp is conveyed to the filter pressing area between the conveying roller 101 and the filter press roller 102 by the conveying filter cloth 105, the pulp is dehydrated under the squeezing action of the two rollers. At the same time, the water is discharged from the pulp through the filtering action of the filter cloth 107.

[0039] The filter press body 100 proposed in this embodiment further includes a tensioning roller 103 and a pneumatic lifting rod 109, which are used to dynamically adjust the tension state of the conveying filter cloth 105, so as to ensure the stability and filtering efficiency of the conveying filter cloth 105 during operation.

[0040] The tensioning roller 103 is rotatably arranged on the free end of the pneumatic lifting rod 109 through a bearing assembly, and the pneumatic lifting rod 109 is vertically arranged on the filter press bracket 104. The cylindrical outer surface of the tensioning roller 103 keeps in contact with the return section of the conveying filter cloth 105, and can rotate synchronously with the movement of the filter cloth during its rotation, avoiding additional friction and wear on the filter cloth.

[0041] The pneumatic lifting rod 109 can automatically expand and contract according to the set tension force through the cylinder structure provided inside it, and then drive the tension roller 103 to move up and down in the vertical direction. By changing the height of the tension roller 103, the running tension of the conveying filter cloth 105 can be effectively adjusted, realizing the automatic adjustment of the tension state of the filter cloth.

[0042] The filter press proposed in this embodiment further includes a feeding bin 300, which is used to continuously supply the pulp to be processed to the conveying filter cloth 105, ensuring the continuity and high efficiency of the filtering process. The feeding bin 300 is installed on one side of the filter press main body 100, and its bottom is fixedly connected to the ground through a support member to ensure the running stability.

[0043] A feeding port 301 is provided at the lower part of the feeding bin 300. The position of the feeding port 301 is set to correspond to the upper surface of the conveying filter cloth 105, ensuring that the pulp material can accurately fall on the bearing area of the conveying filter cloth 105. The height of the feeding port 301 is higher than the running track of the conveying filter cloth 105, so that the pulp can naturally fall under the action of gravity and spread smoothly and evenly on the surface of the filter cloth.

[0044] In actual use, when the conveying motor 106 drives the conveying filter cloth 105 to run, the pulp in the feeding bin 300 continuously feeds the conveying filter cloth 105 through the feeding port 301. After the pulp is evenly laid on the conveying filter cloth 105, it then enters the pressing area between the conveying roller 101 and the filter pressing roller 102 to realize dehydration and solid-liquid separation treatment.

[0045] A stirring rod 302 is provided inside the feeding bin 300 proposed in this embodiment. The stirring rod 302 is rotationally connected to the feeding bin 300, usually supported by a bearing assembly, and driven by an independent stirring drive motor to rotate. The stirring rod 302 continuously stirs and disperses the pulp stored in the feeding bin 300, preventing the pulp from settling or caking due to standing still, and ensuring the uniformity and continuity of feeding.

[0046] A plurality of distributing rods 303 are arranged on the outer surface of the stirring rod 302 along its axial direction. The distributing rods 303 are arranged in a linear array. When the stirring rod 302 rotates, these distributing rods 303 can effectively push and disperse the pulp in multiple directions, and evenly distribute the pulp during the stirring process, thereby avoiding local material accumulation or uneven feeding.

[0047] During the working process, the stirring rod 302 rotates continuously and slowly, driving the material distributing rod 303 to continuously agitate the pulp in the bin, so that the pulp always maintains appropriate fluidity and consistency. When the pulp falls onto the conveying filter cloth 105 through the feeding port 301, its distribution is more uniform, which helps the subsequent pressure filtration process to proceed stably, improves the utilization rate of the filter cloth and the dehydration efficiency. By arranging the stirring rod 302 and the material distributing rod 303 in the feeding bin 300, the phenomena such as pulp caking and bridging are prevented, and the operation reliability and working efficiency of the pressure filtration equipment are further enhanced.

[0048] The pressure filter proposed in this embodiment further includes a discharge bin 400. The discharge bin 400 is arranged at the lower position of the pressure filtration roller 102 and at the end of the pressure filtration completion area, and is used to receive and collect the dry material during the pressure filtration process. After the pressure filtration roller 102 presses the pulp, the filtrate is discharged through the filter cloth, and the remaining solid part is the dry material, which falls into the discharge bin 400.

[0049] In order to improve the discharge efficiency of the dry material and prevent the dry material from accumulating and blocking in the discharge bin 400, a discharge roller 403 is arranged inside the discharge bin 400. The discharge roller 403 is rotationally connected to the discharge bin 400 through a bearing assembly. The discharge roller 403 is arranged in the bottom area of the discharge bin 400, and its surface can be designed as a spiral structure or provided with a scraper according to needs, for agitating and pushing the dry material.

[0050] During the working process of the pressure filter, the pressure filtration roller 102 continuously squeezes the pulp into dry material and falls into the discharge bin 400. Then the discharge roller 403 starts to rotate, driving the dry material to move towards the discharge port of the discharge bin 400 and discharging the discharge bin 400, realizing continuous discharging, and improving the automation degree and production efficiency.

[0051] The discharge bin 400 proposed in this embodiment is also provided with a receiving ramp 401. The receiving ramp 401 is arranged in an inclined plane structure. One end of it is tangentially connected to the surface of the pressure filtration roller 102, and the other end extends into the discharge bin 400, for smoothly receiving the dry material falling off from the pressure filtration roller 102. By arranging the receiving ramp 401, the dry material discharged by the pressure filtration roller 102 can naturally slide into the discharge bin 400. Guide plates 402 are symmetrically arranged on both sides of the receiving ramp 401 to guide the dry material, preventing the dry material from splashing or falling off and shifting, and improving the efficiency and neatness of material collection.

[0052] It should be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0053] The above describes the present invention and its embodiments. Such description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design, without creative efforts, structural forms and embodiments similar to the technical solution without departing from the gist of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A pulp filter press, characterized in that: It includes a filter press main body (100) and a circulating flushing assembly (200), and the circulating flushing assembly (200) is arranged on the filter press main body (100); The filter press main body (100) includes conveying rollers (101) and filter pressing rollers (102). Both the conveying rollers (101) and the filter pressing rollers (102) are fixedly arranged on the filter press main body (100). The filter press main body (100) is configured to drive the conveying rollers (101) and the filter pressing rollers (102) to rotate. A conveying filter cloth (105) is arranged on the conveying rollers (101), and when the conveying filter cloth (105) rotates, it drives the conveying filter cloth (105) to convey pulp; The circulating flushing assembly (200) includes flushing nozzles (201), and the flushing nozzles (201) face the surface of the conveying filter cloth (105) in the return section.

2. The pulp filter press according to claim 1, characterized in that: The circulating flushing assembly (200) includes a pressurizing water pump (202) and a water tank (203). The water tank (203) is arranged below the conveying filter cloth (105), and the pressurizing water pump (202) is arranged on the water tank (203) and is communicated with the flushing nozzles (201); A filter (204) is arranged in the water tank (203), and the filter (204) is arranged at the connection position between the water tank (203) and the pressurizing water pump (202).

3. The pulp filter press according to claim 2, wherein: The circulating flushing assembly (200) includes a light transmittance detector (205). The light transmittance detector (205) is arranged on both sides of the conveying filter cloth (105), and the light transmittance detector (205) is configured to detect the light transmittance of the conveying filter cloth (105); The light transmittance detector (205) is electrically connected to the pressurizing water pump (202), and the light transmittance detector (205) controls the start and stop of the operation of the pressurizing water pump (202).

4. The pulp filter press according to claim 1, wherein: The filter press main body (100) includes a filter press support (104). The conveying rollers (101) and the filter pressing rollers (102) are rotatably arranged on the filter press support (104). A conveying motor (106) and a filter pressing motor (108) are arranged on the filter press support (104). The conveying motor (106) is configured to drive the conveying rollers (101) to rotate, and the filter pressing motor (108) is configured to drive the filter pressing rollers (102) to rotate; A filter pressing filter cloth (107) is arranged on the filter pressing rollers (102), and when the filter pressing rollers (102) rotate, it drives the filter pressing filter cloth (107) to move.

5. The pulp filter press according to claim 4, characterized in that: The filter press main body (100) includes a tensioning roller (103) and a pneumatic lifting rod (109). The tensioning roller (103) is rotatably arranged on the pneumatic lifting rod (109). The pneumatic lifting rod (109) is arranged on the filter press support (104). The surface of the tensioning roller (103) contacts the conveying filter cloth (105), and the pneumatic lifting rod (109) is configured to drive the tensioning roller (103) to lift and lower.

6. The pulp filter press according to claim 5, wherein: It further includes a feeding bin (300), the feeding bin (300) is arranged on one side of the filter press main body (100), a feeding port (301) is provided on the feeding bin (300), the position of the feeding port (301) corresponds to the position of the conveying filter cloth (105), and the position of the feeding port (301) is higher than the upper surface of the conveying filter cloth (105).

7. The pulp filter press according to claim 6, characterized in that: A stirring rod (302) is arranged inside the feeding bin (300), the stirring rod (302) is rotatably connected to the feeding bin (300), and a distributing rod (303) arranged in a linear array is provided on the surface of the stirring rod (302) along the axis.

8. The pulp filter press according to claim 4, wherein: It further includes a discharging bin (400), the discharging bin (400) is arranged at the position of the filter pressing roller (102), a discharging roller (403) is arranged inside the discharging bin (400), the discharging roller (403) is rotatably connected to the discharging bin (400), and the discharging roller (403) is configured to discharge the dry material inside the discharging bin (400).

9. The pulp filter press according to claim 8, wherein: A receiving slope (401) is provided on the discharging bin (400), the receiving slope (401) is tangent to the surface of the filter pressing roller (102), and guiding plates (402) are symmetrically arranged on both sides of the receiving slope (401).

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