A device and method for recycling pulp molding wastewater fibers

Abstract

The present application relates to paper pulp molding wastewater treatment technical field, especially to a kind of paper pulp molding wastewater fiber recovery processing device and method, including main cylinder, main cylinder both ends are through, several strip grooves are set in the outside of main cylinder, filter unit for filtering fiber in wastewater is arranged in strip groove, push assembly for separating fiber and particulate in main cylinder is also slidably arranged in main cylinder, annular plate is rotatably arranged on the both sides of main cylinder, annular plate of one side is hinged with support column connected with bottom plate, the outside of annular plate of the other side is hinged with push cylinder, drying assembly is arranged between annular plate, the filter unit with screening groove is set in the present application, fiber in paper pulp molding wastewater can be effectively filtered and retained, while wastewater and small particulate are smoothly discharged, and the movable design of arc plate avoids the problem that screening groove utilization is low due to uneven distribution of wastewater, greatly improves fiber recovery efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pulp molding wastewater treatment, and particularly relates to a pulp molding wastewater fiber recovery treatment device and method. BACKGROUND

[0002] With the rapid development of the pulp molding industry, a large amount of fiber-containing wastewater generated in the production process has become a problem that needs to be solved in the industry. These wastewaters not only contain recyclable fiber resources, but also contain suspended solids, organic matter and other pollutants. If directly discharged, it not only causes resource waste, but also causes serious environmental pollution. Therefore, efficient recovery of fibers in wastewater and purification of wastewater are crucial to reduce enterprise costs and implement the concept of circular economy.

[0003] At present, some enterprises use a limiting recovery machine to treat pulp molding wastewater. The device mainly separates the fibers in the wastewater through a roller structure. Its working principle is to use the rotation of the roller and the design of the screen hole to make the fibers adhere to the surface of the roller to achieve preliminary separation. However, this recovery method has obvious defects: first, because impurities and particulate matter are mixed with fibers in the wastewater, a large amount of impurities and particulate matter will be trapped with the fibers during the separation of the roller, resulting in the need for subsequent secondary separation operation, increasing the complexity and time cost of the treatment process; second, the separated fibers have a lot of water inside, which need to be transported to an additional dewatering device and subjected to secondary wastewater separation, which is low in efficiency; third, the roller is prone to clogging the screen hole due to impurities and being corroded by wastewater during long-term contact with wastewater, reducing the separation effect. The existing technology usually installs the entire roller and opens a screening hole on the outside of the roller to screen the wastewater and fibers. Once damaged, the entire roller needs to be replaced, and it cannot be adapted to different types of fiber separation.

[0004] In the prior art, a papermaking wastewater fiber recovery device is disclosed in the patent with publication number CN119287692A. The device uses the trapping effect of the inclined net cloth to separate the fibers in the wastewater through the hydraulic distribution design of the main water distribution channel and the branch water distribution channel. The fiber bundles roll down the inclined net to the collection tank under the action of gravity and water flow, realizing pulp-water separation. However, although this technology improves some of the original problems, there are still aspects that need to be further optimized to better meet the actual production needs.

[0005] 1. High risk of fiber entanglement and blockage: The device relies on the inclined net cloth to trap fibers. When the fiber concentration in the wastewater is high or contains long fibers, the fibers are easy to entangle on the horizontal and vertical ribs of the inclined net or the felt cloth, forming a dense filter layer that is difficult to fall off by itself. Although a water flushing auxiliary interface is designed, long-term operation may still cause a decrease in filtration efficiency due to fiber entanglement, requiring frequent shutdown for cleaning, affecting the continuity of the treatment process, and increasing the cost of manual maintenance.

[0006] 2. Incomplete separation of impurities from fibers: The device mainly traps fibers through the pore size of the inclined mesh cloth, but cannot effectively distinguish between fibers and small impurities with similar density (such as sand, plastic debris, etc.), resulting in a large amount of impurities mixed in the recovered fibers. Although the collection tank has a slope structure, the impurities and fiber bundles are difficult to separate automatically when they roll down together, and additional processes are still needed to purify the recovered fibers, reducing the purity and value of resource recovery.

[0007] Therefore, in the above-mentioned view, the existing technology for pulp molding wastewater treatment still has room for optimization. SUMMARY

[0008] In order to solve the above problems, the present application provides a pulp molding wastewater fiber recovery treatment device, which comprises a main cylinder, the two ends of the main cylinder are through, a plurality of strip grooves are formed on the outer side of the main cylinder, and a filtering unit for filtering fibers in wastewater is arranged in the strip grooves.

[0009] A pushing assembly is further slidably arranged in the main cylinder for separating fibers and particulate matter in the main cylinder.

[0010] A support column connected to the bottom plate is hingedly connected to one side of the annular plate, and a pushing cylinder mounted on the bottom plate through a cylinder seat is hingedly connected to the outer side of the other annular plate.

[0011] A drying assembly for drying fibers is further arranged between the annular plates.

[0012] Preferably, the filtering unit comprises arc-shaped grooves formed on the inner walls of the two sides of the strip groove, and a plurality of adjacent arc-shaped grooves are arranged in a staggered manner, an arc-shaped plate is slidably arranged in the arc-shaped groove, and a plurality of screening grooves are formed on the outer side of the arc-shaped plate in the strip groove.

[0013] Preferably, a ring-shaped cavity is formed on one side of the main cylinder, two through grooves with different diameters are formed in the ring-shaped groove, and the two through grooves are respectively communicated with the corresponding plurality of arc-shaped grooves, and a linkage shaft extending into the ring-shaped cavity is arranged on one side of the arc-shaped plate.

[0014] A ring-shaped ring is rotatably arranged in the ring-shaped cavity, one end of the linkage shaft is connected to the ring-shaped ring, an inner gear ring is arranged on the inner diameter of the ring-shaped ring, a linkage motor is mounted on the inner wall of the ring-shaped cavity through a motor seat, and the main shaft of the linkage motor is connected to the inner gear ring through a gear transmission.

[0015] Preferably, the pushing assembly comprises a conical cylinder slidably arranged in the main cylinder, a support plate is arranged on one side of the main cylinder, a reciprocating screw rod is rotatably arranged on the support plate, and the reciprocating screw rod is threadedly passed through the corresponding conical cylinder on one side.

[0016] The conical barrel is sleeved with a connecting ring outside, and a plurality of bending plates corresponding to the strip-shaped grooves are arranged outside the connecting ring, and one side of the bending plate is located in the corresponding strip-shaped groove.

[0017] Preferably, a convex plate is arranged on the inner wall of the conical barrel, and the inner wall of the convex plate is connected with the reciprocating screw rod through a key groove.

[0018] The conical barrel and the bending plate are jointly provided with a falling groove.

[0019] A circular groove is arranged on one side of the conical barrel, a plugging plate is arranged in the circular groove, a T-shaped groove corresponding to the supporting plate is arranged on the plugging plate, and the inner diameter of the conical barrel extends into the T-shaped groove.

[0020] Preferably, the drying assembly comprises a semicircular frame plate arranged between the annular plates, the semicircular frame plate is corresponding to the outer side of the main barrel inside, and a plurality of through grooves penetrating through the inside of the semicircular frame plate are arranged on the semicircular frame plate.

[0021] Preferably, a series of pipes penetrating through and connected with each other are arranged on the through grooves, and an external connecting pipe is connected with the series of pipes.

[0022] Preferably, a separation assembly for separating particles in the sewage is arranged between the supporting column and the push cylinder, the separation assembly comprises a sliding groove arranged on the supporting column, and a conical frame sliding in the sliding groove, a limiting ring is arranged on one side of the conical frame, and the limiting ring is sleeved outside the telescopic end of the push cylinder.

[0023] Preferably, shafts are arranged on the inner walls of the two sides of the conical frame, a sieve plate is arranged between the shafts, and a separation groove corresponding to the sieve plate is arranged on the conical frame.

[0024] One of the shafts penetrates through the outer wall of the conical frame, is located in the sliding groove and is sleeved with a rotating gear, and a rack engaging with the rotating gear is arranged on the inner wall of the sliding groove.

[0025] In addition, the paper pulp molding wastewater fiber recycling method also comprises the following steps:

[0026] S1, wastewater is discharged: the wastewater is discharged into one side port of the main barrel through an external water supply device, and the wastewater is fully contacted with the filter unit in the strip-shaped groove after entering the main barrel.

[0027] S2, fiber separation: the wastewater is discharged outside the main barrel through the filter unit and the strip-shaped groove, and the fiber is intercepted in the main barrel by the filter unit.

[0028] S3, fiber pushing out: After the water in the fiber is dried by the drying assembly, the pushing cylinder drives the main cylinder to swing along the hinge point of the side supporting column, the two ends of the main cylinder are high and low, so that the particulate matter falls from top to bottom into the pushing assembly for collection, and then the pushing assembly moves from bottom to top in the main cylinder to push the fiber out of the main cylinder.

[0029] S4, device returning: after the fiber is pushed out, the pushing cylinder drives the main cylinder to swing to the initial position, and the steps of S1, S2 and S3 are continued.

[0030] In summary, the present application includes at least one of the following beneficial technical effects:

[0031] Firstly, the present application breaks the limitation of traditional fixed screen by the design of movable arc-shaped plate filtering unit. The arc-shaped plate can flexibly adjust the working area of the screening groove, avoid uneven distribution of wastewater, make the fibers in the pulp molding wastewater be fully filtered and retained, and the wastewater and small particles be quickly discharged, so that the fiber recovery efficiency is significantly improved.

[0032] Secondly, the present application innovates the solid-liquid separation mode through the cooperative operation of the conical cylinder, convex plate and bent plate in the pushing assembly. The vibration force generated by the rotation of the convex plate promotes the efficient falling of the particles in the fiber, and the bent plate pushes the fiber in the strip-shaped groove to ensure the complete recovery of the fiber, realizing the efficient separation of the fiber and the particulate matter.

[0033] Thirdly, the present application cooperates the drying assembly and the separation assembly, the drying assembly uses hot air to dry the fiber, which not only facilitates the falling of the particles in the fiber, but also prevents the strip-shaped groove and the screening groove from being blocked by the fiber; the separation assembly further separates the residual particulate matter in the wastewater, and the combination of the two effectively improves the wastewater treatment quality and the fiber recovery quality. BRIEF DESCRIPTION OF DRAWINGS

[0034] The present application will be further described below in combination with the drawings and examples.

[0035] Figure 1 is a structural schematic diagram of the main body of the present application.

[0036] Figure 2 is a sectional view of the main cylinder of the present application.

[0037] Figure 3 is a structural schematic diagram of the filtering unit of the present application.

[0038] Figure 4 is a planar sectional view of the filtering unit of the present application.

[0039] Figure 5 is a structural sectional view of the filtering unit of the present application from another perspective.

[0040] Figure 6It is the connection diagram of linkage shaft and ring of the application.

[0041] Figure 7 It is the sectional view of the application push assembly.

[0042] Figure 8 It is the schematic diagram of another view of the application push assembly.

[0043] Figure 9 It is the structural schematic diagram of the application drying assembly and separation assembly.

[0044] Figure 10 It is the bottom view of the application separation assembly.

[0045] Figure 11 It is the structural schematic diagram of the application driving unit.

[0046] In the figure, 1, main cylinder; 10, strip-shaped groove; 11, ring-shaped plate; 12, support column; 13, push air cylinder; 2, filtering unit; 20, arc-shaped groove; 21, arc-shaped plate; 22, screening groove; 23, ring-shaped cavity; 24, linkage shaft; 25, ring; 26, inner gear ring; 27, linkage motor; 3, push assembly; 30, conical cylinder; 31, support plate; 32, reciprocating screw rod; 33, connecting ring; 34, bent plate; 35, convex plate; 36, falling groove; 37, blocking plate; 38, T-shaped groove; 4, drying assembly; 40, semicircular frame plate; 41, series pipe; 42, external connecting pipe; 5, separation assembly; 50, sliding groove; 51, conical frame; 52, limiting ring; 53, rotating shaft; 54, sieve plate; 55, separation groove; 56, rotating gear; 57, rack; 6, driving unit; 60, driving cavity; 61, structure groove; 62, outer gear ring; 63, double-shaft motor; 64, ratchet part. DETAILED DESCRIPTION

[0047] The following combines Figures 1 to 11 The embodiments of the application are described in detail.

[0048] The application discloses a paper pulp molding wastewater fiber recycling device and method, which is applied to the process of recycling and processing fibers in paper pulp molding wastewater, can effectively intercept fibers in wastewater through a filtering unit, separate fibers from particles and push out fibers by means of a push assembly, and dry the fibers by using a drying assembly to facilitate subsequent processing; further, the application can separate particles in wastewater by using a separation assembly, and a driving unit can realize independent control of main cylinder rotation and reciprocating screw rod rotation.

[0049] Embodiment one: refer to Figure 1 and Figure 2As shown, including the main cylinder 1, strip-shaped groove 10, filter unit 2, push assembly 3, annular plate 11, support column 12, push cylinder 13 and drying assembly 4, the main cylinder 1 is through at both ends, a plurality of strip-shaped grooves 10 are formed on the outer side of the main cylinder 1, and the filter unit 2 for filtering fibers in the wastewater is arranged in the strip-shaped groove 10.

[0050] The push assembly 3 for separating the fibers and the contained particulate matters in the main cylinder 1 is further slidably arranged in the main cylinder 1.

[0051] The annular plate 11 is rotatably arranged on both sides of the main cylinder 1, the annular plate 11 on one side is hingedly connected with the support column 12 connected with the bottom plate, and the annular plate 11 on the other side is hingedly connected with the push cylinder 13 installed on the bottom plate through the cylinder seat.

[0052] The drying assembly 4 for drying the fibers is further arranged between the annular plates 11.

[0053] In addition, the paper pulp molding wastewater fiber recovery treatment method provided by the present application comprises the following steps:

[0054] S1, wastewater is discharged: the wastewater is discharged into one side port of the main cylinder 1 through an external water supply device, and the wastewater is rotated in the main cylinder 1 after entering, so that the wastewater is fully contacted with the filter unit 2 in the strip-shaped groove 10.

[0055] S2, fiber separation: the wastewater is discharged to the outside of the main cylinder 1 through the filter unit 2 and the strip-shaped groove 10, and the fibers are intercepted in the main cylinder 1 by the filter unit 2.

[0056] S3, fiber pushing out: the moisture in the fibers is then dried by the drying assembly 4, and then the push cylinder 13 drives the main cylinder 1 to swing along the hinge point of the side support column 12, so that the two ends of the main cylinder 1 are high and low, so that the particulate matters fall from top to bottom into the push assembly 3 for collection, and then the push assembly 3 moves from bottom to top in the main cylinder 1 to push the fibers out of the main cylinder 1.

[0057] S4, device returning: after the fibers are pushed out, the push cylinder 13 drives the main cylinder 1 to swing to the initial position, and the steps of S1, S2 and S3 are continued.

[0058] Reference Figure 3 , Figure 4 , Figure 5 and Figure 6The filter unit 2 shown in the figure is used to filter the fibers in the wastewater, specifically, the filter unit 2 comprises an arc-shaped groove 20, an arc-shaped plate 21, a screening groove 22, a ring-shaped cavity 23, a linkage shaft 24, a ring-shaped ring 25, an inner gear ring 26 and a linkage motor 27, the arc-shaped groove 20 is arranged on the inner wall of the two sides of the strip-shaped groove 10, and a plurality of adjacent arc-shaped grooves 20 are distributed alternately, the arc-shaped plate 21 is slidably arranged in the arc-shaped groove 20, a plurality of screening grooves 22 are arranged on the outer side of the arc-shaped plate 21 in the strip-shaped groove 10, the width of the screening groove 22 is smaller than that of the fiber, so that the fiber can be blocked, and the width of the screening groove 22 is greater than that of the particle, so that the particle can be discharged out of the cylinder 1 from the screening groove 22; the arc-shaped plate 21 can slide in the corresponding arc-shaped groove 20 when driven by an external force, when the wastewater enters the main cylinder 1, the wastewater and the fine particulate matter (hereinafter referred to as particle) will flow out through the screening groove 22, and then flow out of the main cylinder 1 from the strip-shaped groove 10, and the fiber contained in the wastewater is blocked in the main cylinder 1 by the screening groove 22.

[0059] That is, if the water flow is small, the wastewater entering the main cylinder 1 from the external water supply device will only be located on one side of the main cylinder 1 and in contact with the screening groove 22 on one side, so that part of the screening groove 22 cannot be utilized, therefore, the arc-shaped plate 21 can be driven by an external force to move, so that the closed end of the arc-shaped plate 21 blocks the strip-shaped groove 10, and then the wastewater is uniformly distributed in the main cylinder 1, the main cylinder 1 is driven to rotate, and the arc-shaped plate 21 is driven to move to the initial position to screen the wastewater.

[0060] In the prior art, a plurality of screening holes are directly arranged on the outer side of the entire circular roller to intercept and screen the fibers, and the roller can be directly driven to rotate by a driving device.

[0061] The difference between the present application and the prior art is that: by arranging a plurality of arc-shaped grooves 20 and arc-shaped plates 21, if a single arc-shaped plate 21 is damaged during long-term use, or if a different type of arc-shaped plate 21 and the screening groove 22 on the outer side need to be replaced, the operator only needs to replace the corresponding arc-shaped plate 21, which greatly reduces the difficulty and cost of maintenance; during manufacturing, the factory only needs to manufacture a single arc-shaped plate 21 and process the screening groove 22 thereon, which simplifies the production process; in addition, the single arc-shaped plate 21 is small in size and light in weight, which is convenient for transportation and installation and disassembly by the operator; the existing roller is more troublesome to install because it is a whole, and needs to be replaced as a whole if it is damaged, and the existing roller cannot achieve the technical effect of uniformly distributing the wastewater in the main cylinder 1 by blocking the screening groove 22 through the movement of the arc-shaped plate 21.

[0062] The adjacent arc-shaped grooves 20 are staggered, because if the plurality of strip-shaped grooves 10 are arranged on the outer side of the main cylinder 1, the distance between the strip-shaped grooves 10 will be reduced, and if the arc-shaped grooves 20 are arranged one by one, the length of the arc-shaped grooves 20 will be shortened, thereby limiting the moving distance of the arc-shaped plates 21, so that part of the screening grooves 22 of the arc-shaped plates 21 still stays in the strip-shaped grooves 10 after moving. By the staggered arrangement of the arc-shaped grooves 20, the length of the adjacent arc-shaped grooves 20 can be effectively prevented from being shortened due to the distance, so that the arc-shaped plates 21 can fully move and the screening efficiency is improved.

[0063] The main cylinder 1 is provided with an annular cavity 23 on one side, two through grooves with different diameters are arranged in the annular cavity, and the two through grooves are respectively communicated with the corresponding arc-shaped grooves 20. One side of the arc-shaped plate 21 is provided with a linkage shaft 24 extending into the annular cavity 23.

[0064] The annular cavity 23 is rotatably provided with an annular ring 25, one end of the linkage shaft 24 is connected with the annular ring 25, an inner gear ring 26 is arranged on the inner diameter of the annular ring 25, a linkage motor 27 is mounted on the inner wall of the annular cavity 23 through a motor base, and the main shaft of the linkage motor 27 is connected with the inner gear ring 26 through gear transmission.

[0065] That is, when the arc-shaped plate 21 is driven to move, the linkage motor 27 is started to drive the inner gear ring 26 to rotate through gear transmission, the inner gear ring 26 drives the annular ring 25 to rotate in the annular cavity 23, and the annular ring 25 drives the plurality of arc-shaped plates 21 to move in the corresponding arc-shaped grooves 20 through the linkage shaft 24.

[0066] Referring to Figure 7 and Figure 8 , that is, a pushing assembly 3 for pushing the fibers in the main cylinder 1 out and separating the particles contained therein. Specifically, the pushing assembly 3 comprises a conical cylinder 30, a support plate 31, a reciprocating wire rod 32, a connecting ring 33, a bent plate 34, a convex plate 35, a falling groove 36, a blocking plate 37 and a T-shaped groove 38. The conical cylinder 30 is slidably arranged in the main cylinder 1, one side of the main cylinder 1 is provided with the support plate 31, the reciprocating wire rod 32 is rotatably arranged on the support plate 31, the support plate 31 is used for supporting the reciprocating wire rod 32, and one side of the reciprocating wire rod 32 is threadedly arranged through the corresponding conical cylinder 30. That is, when the reciprocating wire rod 32 is driven to rotate by an external force, the conical cylinder 30 can be driven to reciprocate in the main cylinder 1.

[0067] The outer side of the conical barrel 30 is sleeved with a connecting ring 33, and the outer side of the connecting ring 33 is provided with a plurality of bending plates 34 corresponding to the strip-shaped grooves 10. One side of the bending plate 34 is located in the corresponding strip-shaped groove 10, that is, the conical barrel 30 can drive the corresponding bending plate 34 to move synchronously through the connecting ring 33, and the end of the bending plate 34 can move in the corresponding strip-shaped groove 10, and the bending plate 34 can also limit and guide the conical barrel 30 in the left and right directions through the corresponding strip-shaped groove 10, so that the conical barrel 30 can rotate with the main barrel 1.

[0068] The inner side wall of the conical barrel 30 rotates with a convex plate 35, and the inner side wall of the convex plate 35 is connected with the reciprocating screw rod 32 through key groove cooperation. The inclined surface of the conical barrel 30 and the bending plate 34 are jointly provided with a falling groove 36. That is, when the reciprocating screw rod 32 drives the conical barrel 30 to move in the left and right directions synchronously, the reciprocating screw rod 32 can also drive the convex plate 35 to rotate in the conical barrel 30 through key groove cooperation. The convex plate 35 can generate a vibration force when rotating. After the fiber is filtered, the fiber is dried by the drying assembly 4, and then the fiber in the main barrel 1 is pushed out by the conical barrel 30. The end of the bending plate 34 can push the fiber in the strip-shaped groove 10. Further, the vibration force generated by the convex plate 35 can drive the fiber to fall off so that the fiber can be pushed by the conical barrel 30.

[0069] The fiber may also contain particles, so it is also necessary to separate the particles. That is, the main barrel 1 can be driven to overturn by the pushing screw rod, so that the two ends of the main barrel 1 are high and low. The conical barrel 30 moves from bottom to top, and when moving, the conical barrel 30 generates a vibration force to drive the particles inside the fiber to fall off while pushing the fiber. The size of the falling groove 36 is smaller than that of the fiber and larger than that of the particles, so the particles can enter the conical barrel 30 through the falling groove 36 for storage. The reason for drying the fiber is to dry the moisture inside the fiber so that the fiber does not absorb water and curl. The particles inside the fiber can fall off.

[0070] That is, in the process of pushing the fiber by the conical barrel 30, in combination with the hot air blown out by the drying assembly 4 through the strip-shaped groove 10, the double action can drive the fiber to continuously roll in the main barrel 1. At the same time, the high-frequency vibration generated by the convex plate 35 can further destroy the binding force between the fiber and the particles, so that the particles quickly fall off from the fiber, effectively improving the separation efficiency.

[0071] Finally, after the conical barrel 30 reciprocates several times, the fiber moves to one side of the main barrel 1, so that the operator can take the fiber out from one side of the main barrel 1.

[0072] The conical cylinder 30 is provided with a circular groove on one side, and a blocking plate 37 is installed in the circular groove. The blocking plate 37 is provided with a T-shaped groove 38 corresponding to the supporting plate 31, and the inner diameter of the conical cylinder 30 extends into the T-shaped groove 38. That is, the operator can take down the blocking plate 37 from one side of the conical cylinder 30 to take out the particles screened out of the conical cylinder 30. The T-shaped groove 38 corresponds to the supporting plate 31, that is, the blocking plate 37 can avoid the supporting plate 31 and the reciprocating screw rod 32 when the T-shaped groove 38 is taken down. The part of the inner diameter of the conical cylinder 30 extending into the T-shaped groove 38 is used to block the T-shaped groove 38 to prevent the particles from falling out of the T-shaped groove 38 in advance.

[0073] The convex plate 35 is matched with the reciprocating screw rod 32 by means of a key groove to make the convex plate 35 rotate synchronously by the rotating force of the reciprocating screw rod 32 to realize the vibration separation function without additional vibration device, which effectively simplifies the equipment structure. During the rotation process, the convex plate 35 can destroy the adhesion between the particles and the inner wall of the conical cylinder 30 by its own vibration force, and directly contact with the inner wall of the conical cylinder 30 to scrape off the adhered particles, so as to ensure that the inner wall of the conical cylinder 30 does not accumulate materials. The separated particles can quickly fall into the falling groove 36, and the operator only needs to open the discharge port at the bottom of the conical cylinder 30 to conveniently complete the centralized collection of the particles, which significantly reduces the difficulty of maintenance operation.

[0074] Referring to Figure 9 The drying assembly 4 is used for drying the fibers; specifically, the drying assembly 4 includes a semicircular frame plate 40, a series connection pipe 41 and an external connecting pipe 42. The semicircular frame plate 40 is arranged between the annular plates 11 and corresponds to the outer side of the main cylinder 1 inside. The semicircular frame plate 40 is provided with a plurality of through grooves penetrating through the inside thereof.

[0075] The through grooves are provided with the series connection pipes 41 penetrating through and connected with each other, and the series connection pipes 41 are provided with the external connecting pipes 42 penetratingly connected thereto.

[0076] That is, the external connecting pipe 42 is used for connecting with the gas supply port of the external drying device (known technology, used for providing hot gas). The external drying device transmits the hot gas into the series connection pipes 41, and then the hot gas moves from the series connection pipes 41 to the space between the semicircular frame plate 40 and the main cylinder 1. The semicircular frame plate 40 plays a role of collecting gas, so that the gas can enter into the main cylinder 1 through the strip-shaped grooves 10 and the screening grooves 22 to dry the fibers. When the fibers are pushed out subsequently, the hot gas can also blow the fibers blocked in the strip-shaped grooves 10 and the screening grooves 22 into the main cylinder 1 when passing through the strip-shaped grooves 10 and the screening grooves 22, so that the conical cylinder 30 can push out the fibers to avoid the strip-shaped grooves 10 and the screening grooves 22 being blocked by the fibers.

[0077] Continuing to refer to Figure 9 and Figure 10As shown, a separation assembly 5 is arranged between the support column 12 and the push cylinder 13 for separating particles in the sewage. Specifically, the separation assembly 5 includes a sliding groove 50, a conical frame 51, a limiting ring 52, a rotating shaft 53, a sieve plate 54, a separation groove 55, a rotating gear 56, and a rack 57. The sliding groove 50 is formed in the support column 12, and the conical frame 51 is slidably arranged in the sliding groove 50. The limiting ring 52 is arranged on one side of the conical frame 51 and is sleeved on the outer side of the telescopic end of the push cylinder 13.

[0078] That is, the conical frame 51 can move up and down under the limiting guidance of the sliding groove 50. The wastewater discharged from the strip-shaped groove 10 and the screening groove 22 can flow into the conical frame 51. When the telescopic end of the push cylinder 13 drives the main cylinder 1 to swing, the limiting ring 52 can also drive the conical frame 51 to move up and down synchronously. When the main cylinder 1 swings to the initial position, the conical frame 51 can also rise to the initial position.

[0079] The rotating shaft 53 is rotatably arranged on the inner walls of the two sides of the conical frame 51, and the sieve plate 54 is arranged between the rotating shafts 53. The separation groove 55 corresponding to the sieve plate 54 is formed in the conical frame 51. That is, the discharged wastewater contains some particles and impurities. When the wastewater passes through the sieve plate 54, the wastewater can flow out from the bottom port of the conical frame 51 through the sieve plate 54, and the particles can be retained on the upper end of the sieve plate 54. Then, when the rotating shaft 53 is driven to rotate by an external force, the rotating shaft 53 can drive the sieve plate 54 to rotate synchronously, so that the sieve plate 54 is inclined. At this time, one side of the sieve plate 54 corresponds to the separation groove 55, so that the impurities on the sieve plate 54 slide off and are discharged out of the conical frame 51 through the separation groove 55 on one side. In addition, the vibration force generated by the rotation of the convex plate 35 can further drive the particles to fall off from the sieve plate 54.

[0080] One side of the rotating shaft 53 penetrates through the outer wall of the conical frame 51 and is located in the sliding groove 50 and is sleeved with the rotating gear 56. The rack 57 engaged with the rotating gear 56 is arranged on the inner side wall of the sliding groove 50.

[0081] That is, when the conical frame 51 descends, the rotating gear 56 cooperates with the rack 57 to drive the rotating shaft 53 to rotate, so that the sieve plate 54 is inclined. When the conical frame 51 moves upward to the initial position, the rotating gear 56 cooperates with the rack 57 to drive the sieve plate 54 to rotate to the initial position.

[0082] Therefore, in practical applications, the separated fibers are usually gathered together, and the width of the screening groove 22 is small, which can only allow small particles to be screened out, so as to form a barrier to the fibers. Considering that the fibers will block and wrap most of the particles, so that they cannot fall through the screening groove 22, a secondary screening is carried out through the falling groove 36: first, the hot gas is introduced through the semi-circular frame plate 40, the serial pipe 41 and the external connecting pipe 42 in the drying assembly 4, so that the fibers are expanded and the internal structure is loose (at this time, the fibers still cannot pass through the falling groove 36), and then the air cylinder 13 is pushed to drive the main cylinder 1 to swing and tilt along the hinge point of the support column 12, so that the center of the whole body is directed towards the falling groove 36, and at the same time, the convex plate 35 vibrates by rotating the reciprocating wire rod 32, and the conical cylinder 30 moves along the inner wall of the main cylinder 1 towards the fibers, so as to promote the particles to separate from the fibers. Since the size of the particles is smaller than the diameter of the falling groove 36, they can fall into the inside of the conical cylinder 30 through the groove holes, while the fibers cannot pass through due to their large size, and finally they are pushed out from the port of the main cylinder 1 by the bent plate 34 on the connecting ring 33 outside the conical cylinder 30, so as to realize efficient separation.

[0083] As can be seen from the above, the main purpose of the screening groove 22 is to separate the fibers from the wastewater, and in this process, a small amount of particles will be discharged with the wastewater and the screening groove 22, but most of the particles will remain in the fibers, so the fibers are dried to make them fluffy and loose, so as to promote the particles inside to separate, and further drive the particles to pass through the gaps between the fibers and fall into the conical cylinder 30 through the falling groove 36 from top to bottom.

[0084] Therefore, the processing flow is divided into the following steps:

[0085] First step: separate the fibers from the wastewater through the screening groove 22 to achieve fiber interception and wastewater and small particle discharge;

[0086] Second step: dry the fibers through the drying assembly 4 to make the fibers fluffy and loose, and at the same time, the main cylinder 1 is tilted to change the angle, and the convex plate 35 vibrates to promote the separation of the fibers and the particles, and the particles fall into the conical cylinder 30 through the falling groove 36 for collection;

[0087] Third step: the fibers are pushed out from the port of the main cylinder 1 by the bent plate 34 outside the conical cylinder 30.

[0088] Example two: refer to Figure 11As shown, on the basis of the first embodiment, in order to drive the main cylinder 1 and the reciprocating screw rod 32 to rotate, a driving cavity 60 is formed on one side of the semicircular frame plate 40, and a driving unit 6 is installed in the driving cavity 60. Specifically, the driving unit 6 comprises the driving cavity 60, a structure groove 61, an external gear ring 62, a double-shaft motor 63 and a ratchet wheel 64. The structure groove 61 is formed on the inner side wall of the driving cavity 60, and corresponds to one side of the main cylinder 1. The external gear ring 62 corresponding to the structure groove 61 is sleeved on the outer side of the main cylinder 1. The double-shaft motor 63 is installed on the inner side wall of the driving cavity 60 through a motor base. The ratchet wheels 64 are sleeved on the outer sides of the two main shafts of the double-shaft motor 63, and the driving directions of the two ratchet wheels 64 are different.

[0089] The ratchet wheel 64 on one side is engaged with the external gear ring 62, and the ratchet wheel 64 on the other side is connected with one end of the reciprocating screw rod 32 through belt transmission.

[0090] In the specific implementation process, when the main cylinder 1 needs to be driven to rotate, the double-shaft motor 63 drives the external gear ring 62 to rotate through the ratchet wheel 64, so that the external gear ring 62 drives the main cylinder 1 to rotate between the annular plates 11. Due to the one-way transmission characteristic of the ratchet wheel, the ratchet wheel 64 on the other side will not drive the reciprocating screw rod 32 to rotate.

[0091] Conversely, when the reciprocating screw rod 32 needs to be driven to rotate, the double-shaft motor 63 drives the ratchet wheel 64 to rotate reversely at this time, so that the ratchet wheel 64 on the other side can drive the reciprocating screw rod 32 to rotate through belt transmission. Since the reciprocating screw rod 32 is provided with a double-direction thread on the outer side, the reciprocating screw rod 32 only needs to rotate in one direction to drive the conical cylinder 30 to reciprocate in the left-right direction in the main cylinder 1. Due to the one-way transmission characteristic of the ratchet wheel, the ratchet wheel 64 on the other side will not drive the external gear ring 62 to rotate.

[0092] Therefore, in the present embodiment, only a single double-shaft motor 63 is needed to drive the main cylinder 1 and the conical cylinder 30 to move through forward and reverse rotation switching, avoiding the increase of maintenance and installation costs caused by the installation of multiple driving devices.

[0093] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, regardless of any point of view.

[0094] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.

Claims

1. A pulp molding wastewater fiber recovery treatment apparatus comprising a main cylinder (1), characterized in that: The main cylinder (1) is through at both ends, and a plurality of strip grooves (10) are formed in the outer side of the main cylinder (1), and a filtering unit (2) for filtering fibers in wastewater is arranged in the strip grooves (10); The main cylinder (1) is further slidably provided with a pushing assembly (3) for separating fibers and particulate matters in the main cylinder (1); The main cylinder (1) is rotatably sleeved with annular plates (11) at both sides, the annular plate (11) on one side is hingedly connected with a support column (12) connected with the bottom plate, and the annular plate (11) on the other side is hingedly connected with a pushing air cylinder (13) mounted on the bottom plate through an air cylinder base; The annular plates (11) are further provided with a drying assembly (4) for drying fibers. The pushing assembly (3) comprises a conical cylinder (30) slidably arranged in the main cylinder (1), and a support plate (31) is arranged on one side of the main cylinder (1), and a reciprocating screw rod (32) is rotatably arranged on the support plate (31), and one side of the reciprocating screw rod (32) is threadedly penetrated through the corresponding conical cylinder (30). The outer side of the conical cylinder (30) is sleeved with a connecting ring (33), and a plurality of bent plates (34) corresponding to the strip grooves (10) are arranged on the outer side of the connecting ring (33), and one side of the bent plate (34) is located in the corresponding strip groove (10). A convex plate (35) is rotatably arranged on the inner side wall of the conical cylinder (30), and the inner side wall of the convex plate (35) is connected with the reciprocating screw rod (32) through a key groove matching mode. A drop groove (36) is formed on the inclined surface of the conical cylinder (30) and the bent plate (34). A circular groove is formed on one side of the conical cylinder (30), and a blocking plate (37) is mounted in the circular groove, a T-shaped groove (38) corresponding to the support plate (31) is formed on the blocking plate (37), and the inner diameter of the conical cylinder (30) extends into the T-shaped groove (38).

2. A pulp molding wastewater fiber recovery treatment device according to claim 1, characterized by: The filtering unit (2) comprises arc-shaped grooves (20) formed on the inner walls of the strip grooves (10) at both sides, and a plurality of adjacent arc-shaped grooves (20) are distributed alternately, and an arc-shaped plate (21) is slidably arranged in the arc-shaped groove (20), and a plurality of screening grooves (22) are formed on the outer side of the arc-shaped plate (21) located in the strip groove (10).

3. A pulp molding wastewater fiber recovery treatment device according to claim 2, characterized by: An annular cavity (23) is formed on one side of the main cylinder (1), two through grooves with different diameters are formed in the annular cavity (23), and the two through grooves are respectively communicated with a plurality of corresponding arc-shaped grooves (20), and one side of the arc-shaped plate (21) is provided with a linkage shaft (24) extending into the annular cavity (23); An annular ring (25) is rotatably arranged in the annular cavity (23), one end of the linkage shaft (24) is connected with the annular ring (25), an inner gear ring (26) is arranged on the inner diameter of the annular ring (25), a linkage motor (27) is mounted on the inner wall of the annular cavity (23) through a motor base, and the main shaft of the linkage motor (27) is connected with the inner gear ring (26) through a gear transmission mode.

4. A pulp molding wastewater fiber recovery treatment device according to claim 1, characterized by: The drying assembly (4) comprises a semicircular frame plate (40) arranged between the annular plates (11), the inside of the semicircular frame plate (40) corresponds to the outer side of the main cylinder (1), and a plurality of through grooves are formed in the semicircular frame plate (40) and communicated with the inside thereof.

5. A pulp-molding wastewater fiber recovery treatment device according to claim 4, characterized by: The through groove on the semicircular frame plate (40) is provided with a series pipe (41) penetrating through and connected with each other, and the series pipe (41) is provided with an external connecting pipe (42) penetratingly connected.

6. A pulp molding wastewater fiber recovery treatment device according to claim 1, characterized by: The support column (12) and the push cylinder (13) are provided with a separation assembly (5) for separating particles in the sewage, the separation assembly (5) comprises a sliding groove (50) opened on the support column (12), and the sliding groove (50) is slidably provided with a conical frame (51), one side of the conical frame (51) is provided with a limiting ring (52), and the limiting ring (52) is sleeved on the outer side of the telescopic end of the push cylinder (13).

7. A pulp-molded wastewater fiber recovery treatment device according to claim 6, characterized by: The inner walls of the two sides of the conical frame (51) are rotatably provided with shafts (53), and the shafts (53) are provided with a sieve plate (54) therebetween, and the conical frame (51) is provided with a separation groove (55) corresponding to the sieve plate (54); One side of the shaft (53) penetrates through the outer wall of the conical frame (51) and is located in the sliding groove (50) and is sleeved with a rotating gear (56), and the inner side wall of the sliding groove (50) is provided with a rack (57) engaged with the rotating gear (56).

8. A method for recovering fibers from paper pulp molding wastewater using the apparatus for recovering fibers from paper pulp molding wastewater according to any one of claims 1 to 7, characterized by, The processing method comprises the following steps: S1, wastewater discharge: the wastewater is discharged into one side of the main cylinder (1) through the external water supply device, and the wastewater enters the main cylinder (1) to rotate, so that the wastewater is fully contacted with the filter unit (2) in the strip-shaped groove (10); S2, fiber separation: the wastewater is discharged to the outside of the main cylinder (1) through the filter unit (2) and the strip-shaped groove (10), and the fiber is intercepted in the main cylinder (1) by the filter unit (2); S3, fiber pushing out: then the moisture in the fiber is dried by the drying assembly (4), and then the push cylinder (13) drives the main cylinder (1) to swing along one side of the support column (12) hinge point, the two ends of the main cylinder (1) are high and low, so that the particles fall from top to bottom into the push assembly (3) for collection, and then the push assembly (3) moves from bottom to top in the main cylinder (1) to push the fiber out of the main cylinder (1); S4, device returning: after the fiber is pushed out, the push cylinder (13) pushes the main cylinder (1) to swing to the initial position, and the steps of S1, S2 and S3 are continued.

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