A treatment device with papermaking wastewater pulp recovery structure

Abstract

The present invention relates to the field of wastewater treatment technology, and in particular to a treatment device with a papermaking wastewater pulp recovery structure, which includes a housing and a filter assembly, the housing includes a liquid storage chamber and a collection tank; the filter assembly is installed on the housing, the filter assembly includes a central shaft, a filter cloth and a plurality of fixed rods, the central shaft is rotatably installed on the housing, and a filter cloth is installed between two adjacent fixed rods; the filter assembly also includes a plurality of guide plates, the guide plates are arranged on the fixed rods, the guide plates are inclined toward a side away from the filter cloth along the rotation direction of the central shaft, the guide plates are elastic parts, and the guide plates are used to cover the gap between the filter cloth and the collection tank. The treatment device of the present invention adopts a vacuum disc filter for filtering to achieve solid-liquid separation, and the solids can be collected along a preset path through the guide plates, thereby improving the collection effect and the pulp recovery efficiency, and has good application prospects in the treatment of production wastewater in the home appliance industry.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, in particular to a treatment device with a papermaking wastewater pulp recovery structure. Background Art

[0002] The papermaking industry generates a large amount of wastewater during the production process, and wastewater pulp recovery is crucial for resource utilization and environmental protection. Papermaking wastewater is divided into pulping wastewater, mid-stage water and paper machine white water according to its generation stage. Among them, paper machine white water can be directly recycled for production after being treated by flotation or multi-disc vacuum filtration. Usually, papermaking wastewater mainly refers to mid-stage water, which contains lignin, hemicellulose, sugars, residual alkali, inorganic salts, volatile acids, organic chlorides, etc.

[0003] When recycling wastewater pulp, a disc filter is generally used to filter white water. The disc filter is a continuous vacuum filtration device, commonly used for solid-liquid separation. The disc filter includes a housing and a central shaft that can rotate relative to the housing. A plurality of fan-shaped pieces are arranged on the periphery of the central shaft to form a filter disc, wherein each fan-shaped piece forms a separate filter unit, and the filter cloth is sleeved on the fan-shaped piece to form a filter cavity. During the rotation process, the filter unit passes through the adsorption zone, the dehydration zone and the discharge zone in sequence. The filter unit located in the adsorption zone forms a pressure difference inside and outside the filter cavity with the help of a vacuum pump, so that the slurry adheres to the filter cloth to form a filter cake. When the filter cake leaves the liquid surface, it continues to remove water under the action of vacuum in the dehydration zone, and then the filter cake is discharged into the collection tank by back-blowing in the discharge zone. The whole operation process is carried out in a continuous cycle.

[0004] However, when the existing disc filter is performing the filter cake removal process, filter cake debris often falls back into the box through the gap between the collection tank and the filter cloth, resulting in poor collection of the filter cake and affecting the pulp recovery efficiency.

[0005] The information disclosed in the background technology section of the present invention is only intended to deepen the understanding of the general background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0006] Based on this, it is necessary to provide a treatment device with a papermaking wastewater pulp recovery structure to address the problem that the current treatment device has an unsatisfactory pulp solids collection effect.

[0007] The above purpose is achieved through the following technical solutions:

[0008] A treatment device with a papermaking wastewater pulp recovery structure, comprising:

[0009] A box body, the box body comprising a liquid storage chamber for storing papermaking wastewater and a collecting tank for collecting pulp solids;

[0010] A filter assembly is installed on the housing, the filter assembly comprises a central shaft, a filter cloth and a plurality of fixed rods, the central shaft is rotatably installed on the housing, a plurality of the fixed rods are arranged at intervals on the outer periphery of the central shaft, the filter cloth is installed between two adjacent fixed rods, and the filter cloths are enclosed to form a filter cavity; the filter assembly also comprises a plurality of guide plates, the guide plates are arranged on the fixed rods, the guide plates are inclined toward a side away from the filter cloth along the rotation direction of the central shaft, the guide plates are elastic members, and the guide plates are used to cover the gap between the filter cloth and the collecting tank to guide the pulp solids falling off the filter cloth into the collecting tank;

[0011] The central rotating shaft is a hollow shaft, a vacuum pipe is arranged in the central rotating shaft, the vacuum pipe is communicated with the filter chamber, and the vacuum pipe is configured such that when the filter cloth rotates to a first position and a second position along with the central rotating shaft, a negative pressure is generated in the filter chamber, and when the filter cloth rotates to a third position along with the central rotating shaft, a positive pressure is generated in the filter chamber; wherein the first position, the second position and the third position correspond to an adsorption zone, a dehydration zone and a back-blowing zone, respectively;

[0012] A partition is provided in the liquid storage chamber, and a plurality of baffles are provided on the partition. The plurality of baffles are arranged at intervals in the upper and lower directions. The filter assembly can move in the vertical direction, and the moving distance of the filter assembly in the vertical direction is positively correlated with the mass of the filter assembly.

[0013] Furthermore, the liquid storage chamber includes a cleaning groove, which is arranged side by side with the collecting groove, and a partition is arranged between the cleaning groove and the collecting groove, and the filter cloth passes through the cleaning groove during the process of rotating with the central shaft.

[0014] Furthermore, the baffle is inclined from bottom to top toward a side away from the collecting tank.

[0015] Furthermore, a communication port is provided on the partition, and the communication port is located above the corresponding baffle plate and is used to connect the cleaning tank and the collecting tank.

[0016] Furthermore, a plurality of baffles are provided on the partition, and the plurality of baffles are arranged in an upper and lower interval.

[0017] Furthermore, the filter assembly includes a support seat, and the filter assembly is installed on the box body so as to be movable up and down through the support seat. When the weight of the filter assembly increases, the support seat moves downward.

[0018] Furthermore, a slide rail and a slide block that cooperate with each other are arranged between the support seat and the box body to limit the movement of the support seat in the up and down directions relative to the box body; a support platform is provided on the box body, the support seat is installed on the support platform, and a spring is arranged between the support platform and the support seat.

[0019] Furthermore, the filter assembly includes a drive motor, which is connected to a driving gear. A gear ring is fixed to the outer periphery of the central rotating shaft, and the gear ring is meshed with the driving gear. A bearing seat is installed on the outer periphery of the central rotating shaft, and the bearing seat and the drive motor are installed on the support seat.

[0020] Furthermore, each of the fixing rods is provided with two symmetrical guide plates, and the filter cloth is provided with the collecting grooves on both axial sides along the central rotating shaft; and a plurality of groups of the filter cloths are arranged at intervals on the central rotating shaft.

[0021] The beneficial effects of the present invention are:

[0022] The present invention arranges a guide plate next to the filter cloth, and the guide plate can cover the gap between the collection trough and the filter cloth. The guide plate can guide the filter cake that falls off the filter cloth, effectively preventing the relatively broken filter cake from returning to the liquid storage chamber through the gap, ensuring that it is collected along the set path, thereby improving the collection efficiency and reducing material loss.

[0023] The present invention also provides a plurality of baffles. When the guide plate touches the baffle, it will deform and reset, generating a vibration effect, thereby helping to shake off the subsequent filter cakes. The fallen filter cakes enter the collecting tank through the guide plates, thereby helping to improve the separation effect of the filter cakes and the filter components, and further improving the pulp recovery efficiency.

[0024] The present invention can adjust the degree of assisting shaking off according to the weight of the filter cake. When there are more filter cakes and the filter assembly is lower, it will be vibrated by more baffles from the time it touches the first baffle to the time it leaves the baffle. This can avoid damage to the filter cloth caused by excessive vibration, and can make the filter cake fall off better, thus extending the service life of the device and ensuring the stability and reliability of the pulp recovery process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of a treatment device with a papermaking wastewater pulp recovery structure according to an embodiment of the present invention;

[0026] Figure 2 It is a schematic diagram of the exploded structure of a treatment device with a papermaking wastewater pulp recovery structure according to an embodiment of the present invention;

[0027] Figure 3 A first cross-sectional view of a treatment device having a papermaking wastewater pulp recovery structure according to an embodiment of the present invention;

[0028] Figure 4 A second cross-sectional view of a treatment device with a papermaking wastewater pulp recovery structure according to an embodiment of the present invention;

[0029] Figure 5 for Figure 4 A partial enlarged view of the middle A;

[0030] Figure 6 It is a rear view of a treatment device with a papermaking wastewater pulp recovery structure according to an embodiment of the present invention;

[0031] Figure 7 for Figure 6 Cross-sectional view of BB.

[0032] in:

[0033] 100, processing device; 200, housing; 210, liquid storage chamber; 211, cleaning tank; 220, collecting tank; 230, partition; 231, connecting port; 201, spring; 202, support platform; 300, filter assembly; 301, drive motor; 3011, driving gear; 302, central shaft; 3021, gear ring; 303, filter cloth; 3031, filter chamber; 304, fixing rod; 305, vacuum pipe; 306, baffle; 307, guide plate; 310, support seat. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is 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 therefore cannot be understood as a limitation to the present invention.

[0036] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] like Figures 1 to 7 As shown, an embodiment of the present invention provides a treatment device with a papermaking wastewater pulp recovery structure. The treatment device 100 with a papermaking wastewater pulp recovery structure includes a box body 200 and a filter assembly 300 installed on the box body 200.

[0038] The housing 200 includes a liquid storage chamber 210 and a collecting tank 220. The liquid storage chamber 210 stores papermaking wastewater. The collecting tank 220 is used to collect pulp solids (i.e., filter cakes) that fall off from the filter assembly 300. The filter assembly 300 includes a central shaft 302, a filter cloth 303, and a plurality of fixed rods 304. The central shaft 302 is rotatably mounted on the housing 200. The plurality of fixed rods 304 are arranged at intervals on the periphery of the central shaft 302. A filter cloth 303 is installed between two adjacent fixed rods 304. The filter cloth 303 includes a filter chamber 3031.

[0039] The filter assembly 300 further includes a plurality of guide plates 307, which are arranged on the fixed rod 304. Specifically, the fixed rod 304 extends radially along the central rotating shaft 302, and the guide plates 307 are fixed on the corresponding fixed rod 304 and arranged in a circular array around the central rotating shaft 302. At the same time, the guide plates 307 are arranged tilted, and the tilting direction thereof is tilted toward the side away from the filter cloth 303 along the rotation direction of the central rotating shaft 302. Specifically, when one of the guide plates 307 rotates with the central rotating shaft 302 to be located above (including obliquely above) the collecting tank 220, the guide plate 307 is located in a horizontal direction or a nearly horizontal direction, and the lower edge of the guide plate 307 is farther from the filter cloth 303 than the upper edge. The guide plate 307 can cover the gap between the filter cloth 303 and the collecting tank 220 to guide the pulp solids falling off the filter cloth 303 into the collecting tank 220. In other words, the gap between the filter cloth 303 and the collecting tank 220 can be located within the downward projection range of the guide plate 307, so that the pulp solids falling off the filter cloth 303 directly enter the collecting tank 220 along the inclined guide plate 307. In addition, the guide plate 307 is an elastic member, and during the rotation process with the central shaft 302, the guide plate 307 can pass through the gap between the filter cloth 303 and the collecting tank 220, and the guide plate 307 can be deformed and vibrate.

[0040] The treatment device with a papermaking wastewater pulp recovery structure provided by the embodiment of the present invention can guide the filter cake to fall into the collection tank 220 by setting an inclined guide plate 307 on the fixed rod 304, thereby preventing the relatively broken filter cake and debris from returning to the liquid storage chamber 210 through the gap between the filter cloth 303 and the collection tank 220, so that the filter cake is collected along a preset path, thereby improving the collection effect. This design is suitable for treating papermaking wastewater containing a large number of fine particles or fragile filter cakes, and can efficiently collect filter cakes.

[0041] At the same time, the guide plate 307 itself can be deformed and can pass through the gap between the filter cloth 303 and the collecting tank 220 without affecting the rotation of the filter assembly 300. When the guide plate 307 contacts the collecting tank 220, it deforms and resets, forming a vibration effect, which can effectively shake off the filter cake and improve the filter cake shedding effect.

[0042] In some embodiments, the liquid storage chamber 210 includes a cleaning tank 211 arranged side by side with the collecting tank 220. Specifically, the cleaning tank 211 and the collecting tank 220 are arranged alternately along the axial direction parallel to the central rotating shaft 302, and the cleaning tank 211 stores papermaking wastewater and has the same liquid level height as the liquid storage chamber 210. A partition 230 is arranged between the cleaning tank 211 and the collecting tank 220, and the partition 230 is perpendicular to the axial direction of the central rotating shaft 302. Among them, the filter cloth 303 passes through the cleaning tank 211 during the rotation with the central rotating shaft 302. Specifically, the partition 230 forms a tank wall on one side of the collecting tank 220 close to the filter cloth 303, and the cleaning tank 211 is an open tank-shaped space formed by two adjacent partitions 230. The filter cloth 303 is perpendicular to the central rotating shaft 302 in a flat state, and the partition 230 is parallel to the filter cloth 303 in a flat state. When the filter cloth 303 rotates along with the central rotating shaft 302 to reach the top of the cleaning tank 211 and passes through the cleaning tank 211 , the filter cakes falling off the filter cloth 303 may fall into the collecting tank 220 on the other side of the partition 230 .

[0043] Furthermore, if Figure 3 , Figure 4 As shown, a baffle 306 is provided on the partition 230, and the baffle 306 is inclined from bottom to top toward the side away from the collecting tank 220, that is, the baffle 306 is inclined from bottom to top toward the side close to the filter cloth 303 in the corresponding cleaning tank 211. The downward projection of the guide plate 307 can cover a part of the baffle 306. When the baffle 306 contacts the rotating guide plate 307, the baffle 306 moves the guide plate 307, causing the guide plate 307 to deform and then automatically reset. During this process, the guide plate 307 will vibrate, which helps the filter cake to shake and fall off. In this way, the inclined baffle 306 can not only help the filter cake to separate from the filter cloth 303, but also provide a space to avoid damaging the filter cloth 303 due to an excessive contact surface.

[0044] Optionally, the baffle 306 is an arc-shaped plate. Of course, the baffle 306 can also adopt an inclined flat plate structure.

[0045] Specifically, the top of the baffle 306 contacts the filter cloth 303 entering the cleaning tank 211 .

[0046] In other embodiments, there is a gap between the baffle 306 and the filter cloth 303 , and the top of the baffle 306 is in contact with the filter cake on the filter cloth 303 .

[0047] Furthermore, if Figure 4 As shown, the partition plate 230 is provided with a communication port 231, which is located above the corresponding baffle plate 306 and is used to connect the cleaning tank 211 with the collecting tank 220. In this way, the pulp solids on the baffle plate 306 can slide into the collecting tank 220 through the communication port 231, further improving the collection effect.

[0048] It is understandable that the lower portion of the collecting tank 220 is separated from the portion of the liquid storage chamber 210 storing papermaking wastewater, and the upper portion of the collecting tank 220 is connected to the portion of the cleaning tank 211 that does not store papermaking wastewater through the connecting port 231 .

[0049] Furthermore, if Figure 4 As shown, a plurality of baffles 306 are disposed on the partition plate 230 , and the plurality of baffles 306 are arranged at intervals in the vertical direction. In addition, a communication port 231 is disposed between adjacent baffles 306 .

[0050] In an embodiment of the present invention, the central rotating shaft 302 can move up and down relative to the housing 200. When the weight of the filter cake in the filter assembly 300 is greater, the position of the central rotating shaft 302 on the housing 200 is lower. During the rotation process, the filter cloth 303 contacts more baffles 306, and the cleaning force is greater after the filter cake is scraped by multiple baffles 306. Correspondingly, the smaller the weight of the filter cake, the fewer baffles 306 the filter cloth 303 contacts, avoiding unnecessary damage. Therefore, the processing device of the present invention can adjust the degree of the baffle 306 to assist in shaking off according to the weight of the filter cake, thereby meeting the scraping demand for more filter cakes and avoiding excessive damage to the device due to unnecessary contact.

[0051] In some embodiments, Figure 3 , Figure 7 As shown, the central rotating shaft 302 is a hollow shaft, and a vacuum pipe 305 is arranged in the central rotating shaft 302, and the vacuum pipe 305 is connected with the filter chamber 3031. The vacuum pipe 305 is arranged in the central rotating shaft 302 and connected with an external vacuum pumping device. The vacuum pipe 305 is configured as follows: when the filter cloth 303 rotates to the first position with the central rotating shaft 302, the filter chamber 3031 generates negative pressure to suck the papermaking wastewater in the liquid storage chamber 210, so that the pulp in the papermaking wastewater is filtered out through the filter cloth 303, and the pulp outside the filter chamber 3031 can form a filter cake on the filter cloth 303; when the filter cloth 303 rotates to the second position with the central rotating shaft 302, the filter chamber 3031 continues to maintain negative pressure to dehydrate the filter cake adsorbed on the filter cloth 303; when the filter cloth 303 rotates to the third position with the central rotating shaft 302, the filter chamber 3031 generates positive pressure to make the filter cake on the filter cloth 303 fall off. Among them, the first position, the second position, and the third position can correspond to the adsorption area, the dehydration area, and the back-blowing area of ​​a conventional vacuum disc filter, respectively. The working principle of disc vacuum filtration is not described in detail here.

[0052] In some embodiments, Figure 1 , Figure 2As shown, the filter assembly 300 includes a support seat 310, and the filter assembly 300 is installed on the housing 200 through the support seat 310. The support seat 310 can move up and down relative to the housing 200. When the weight of the filter assembly 300 increases, the support seat 310 moves downward, and the height position of the filter assembly 300 on the housing 200 is reduced, so that the filter cloth 303 in the filter assembly 300 can contact more baffles 306, thereby improving the separation effect of the filter cake and the filter cloth 303.

[0053] In some embodiments, Figure 2 As shown, a slide rail and a slider that cooperate with each other are arranged between the support seat 310 and the box body 200 to limit the support seat 310 from moving in the up and down direction relative to the box body 200. A support platform 202 is arranged on the box body 200, and the support seat 310 is mounted on the support platform 202. A spring 201 is arranged between the support platform 202 and the support seat 310. The spring 201 is a compression spring. As the filter cake accumulated on the filter cloth 303 increases, the spring 201 is compressed downward to store potential energy; when the filter cake falls off and the weight is reduced, the spring 201 releases the potential energy to move the filter assembly 300 upward or reset.

[0054] Specifically, when the filter cake increases, the spring 201 is compressed, the filter assembly 300 is lowered, and the filter cloth 303 interacts with more baffles 306, thereby enhancing the vibration effect; otherwise, the vibration is reduced. This adaptive adjustment mechanism not only avoids damage to the device caused by excessive vibration and prolongs the service life of the equipment, but also ensures that the filter cake can be well detached under different filter cake weights, thereby improving the stability and reliability of the device.

[0055] Furthermore, the filter assembly 300 includes a driving motor 301, which is connected to a driving gear 3011, and a gear ring 3021 is fixed to the outer periphery of the central shaft 302, and the gear ring 3021 meshes with the driving gear 3011. A bearing seat is installed on the outer periphery of the central shaft 302, and the bearing seat and the driving motor 301 are installed on the support seat 310.

[0056] like Figure 4 As shown, in some embodiments, two symmetrical guide plates 307 are provided on each fixed rod 304, and the fixed rod 304 and the guide plates 307 extend radially along the central rotating shaft 302. Collection slots 220 are provided on both sides of the filter cloth 303. A plurality of collection slots 220 are arranged side by side in the box body 200, and a group of fixed rods 304 and filter cloth 303 are provided between each two adjacent collection slots 220, and each group of fixed rods 304 and filter cloth 303 are alternately arranged on the periphery of the central rotating shaft 302.

[0057] The working process of the treatment device with papermaking wastewater pulp recovery structure in the above embodiment is as follows: inject papermaking wastewater into the liquid storage chamber 210 in the box body 200; start the driving motor 301, and drive the central shaft 302 located in the bearing seat to rotate through the meshing driving gear 3011 and the ring gear 3021, and the central shaft 302 drives the fixed rod 304 and the filter cloth 303 fixed thereon to rotate. The pressure of the filter chamber 3031 inside the filter cloth 303 is controlled by the vacuum pipe 305 to form a negative pressure. The papermaking wastewater in the liquid storage chamber 210 enters the filter chamber 3031 under the action of the negative pressure, and the pulp solids will remain on the outer surface of the filter cloth 303 to form a filter cake, thereby achieving a preliminary separation of solid and liquid. When the filter cloth 303 leaves the liquid surface with the filter cake, the negative pressure continues to dehydrate the filter cake on the filter cloth 303. Then, when the filter cloth 303 rotates to the upper part of the cleaning tank 211, the filter cloth 303 has not yet contacted the guide plate 307 in the cleaning tank 211. Positive pressure is blown into the filter chamber 3031 to expand the filter cloth 303, and the filter cake attached to the surface of the filter cloth 303 falls off and enters the collection tank 220 along the guide plate 307 below. The guide plate 307 has a guiding function to prevent the debris from falling back into the liquid storage chamber 210 to a certain extent. A part of the filter cake residue remaining on the filter cloth 303 can be shaken off by vibration and enter the collection tank 220 along the baffle plate 306. Among them, because the guide plate 307 is elastic, it will touch multiple baffle plates 306 during the rotation process with the central shaft 302, and deform and reset, thereby generating a vibration effect, which helps the filter cake to further detach. In addition, when there are more filter cakes, the filter assembly 300 will be lowered, the spring 201 will be further compressed, and the filter cloth 303 will be vibrated by more baffles 306 from touching the first baffle 306 to leaving the cleaning tank 211, thereby avoiding damage caused by excessive vibration and effectively helping the filter cake to fall off.

[0058] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A treatment device with a papermaking wastewater pulp recovery structure, characterized in that: include: A box body (200), the box body (200) comprising a liquid storage chamber (210) for storing papermaking wastewater and a collection tank (220) for collecting pulp solids; A filter assembly (300) is mounted on the housing (200), the filter assembly (300) comprising a central rotating shaft (302), a filter cloth (303) and a plurality of fixed rods (304), the central rotating shaft (302) being rotatably mounted on the housing (200), the plurality of fixed rods (304) being arranged at intervals on the periphery of the central rotating shaft (302), the filter cloth (303) being mounted between two adjacent fixed rods (304), and the filter cloth (303) enclosing a filter cavity (3031); the filter The assembly (300) further comprises a plurality of guide plates (307), wherein the guide plates (307) are arranged on the fixing rod (304), and the guide plates (307) are inclined along the rotation direction of the central rotating shaft (302) toward a side away from the filter cloth (303), and the guide plates (307) are elastic members, and the guide plates (307) are used to cover the gap between the filter cloth (303) and the collecting trough (220) so as to guide the pulp solids that fall off the filter cloth (303) into the collecting trough (220); The central rotating shaft (302) is a hollow shaft. A vacuum pipe (305) is arranged in the central rotating shaft (302). The vacuum pipe (305) is in communication with the filter chamber (3031). The vacuum pipe (305) is configured such that when the filter cloth (303) rotates to a first position and a second position along with the central rotating shaft (302), a negative pressure is generated in the filter chamber (3031); and when the filter cloth (303) rotates to a third position along with the central rotating shaft (302), a positive pressure is generated in the filter chamber (3031); wherein the first position, the second position and the third position correspond to an adsorption zone, a dehydration zone and a back-blowing zone, respectively. A partition (230) is provided in the liquid storage chamber (210), a plurality of baffles (306) are provided on the partition (230), the plurality of baffles (306) are arranged vertically and spaced apart, the filter assembly (300) is capable of moving in a vertical direction, and a moving distance of the filter assembly (300) in the vertical direction is positively correlated with a mass of the filter assembly (300); The liquid storage chamber (210) comprises a cleaning groove (211), the cleaning groove (211) and the collecting groove (220) being arranged side by side, a partition plate (230) being arranged between the cleaning groove (211) and the collecting groove (220), and the filter cloth (303) passing through the cleaning groove (211) during the process of rotating with the central rotating shaft (302).

2. A treatment device with a papermaking wastewater pulp recovery structure according to claim 1, characterized in that: The baffle (306) is arranged to be inclined from bottom to top toward a side away from the collecting tank (220).

3. A treatment device with a papermaking wastewater pulp recovery structure according to claim 2, characterized in that: The partition plate (230) is provided with a communication port (231), the communication port (231) being located above the corresponding baffle plate (306) and being used to connect the cleaning tank (211) with the collecting tank (220).

4. The processing device with a papermaking wastewater pulp recovery structure according to claim 2 is characterized in that: A plurality of baffles (306) are disposed on the partition (230), and the plurality of baffles (306) are arranged vertically and spaced apart.

5. The processing device with a papermaking wastewater pulp recovery structure according to claim 1 is characterized in that: The filter assembly (300) comprises a support seat (310), and the filter assembly (300) is mounted on the housing (200) via the support seat (310) so as to be movable up and down. When the weight of the filter assembly (300) increases, the support seat (310) moves downward.

6. The treatment device with a papermaking wastewater pulp recovery structure according to claim 5, characterized in that: A slide rail and a sliding block that cooperate with each other are arranged between the support seat (310) and the box body (200) to limit the support seat (310) from moving in an up-and-down direction relative to the box body (200); a support platform (202) is arranged on the box body (200), the support seat (310) is mounted on the support platform (202), and a spring (201) is arranged between the support platform (202) and the support seat (310).

7. The processing device with a papermaking wastewater pulp recovery structure according to claim 5, characterized in that: The filter assembly (300) comprises a drive motor (301), the drive motor (301) is connected to a driving gear (3011), a gear ring (3021) is fixed to the outer periphery of the central rotating shaft (302), and the gear ring (3021) is meshed with the driving gear (3011); a bearing seat is installed on the outer periphery of the central rotating shaft (302), and the bearing seat and the drive motor (301) are installed on the support seat (310).

8. The treatment device with a papermaking wastewater pulp recovery structure according to claim 1, characterized in that: Two symmetrical guide plates (307) are provided on each of the fixing rods (304); the collecting grooves (220) are provided on both axial sides of the filter cloth (303) along the central rotating shaft (302); and a plurality of groups of filter cloths (303) arranged at intervals are provided on the central rotating shaft (302).

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