Fiber recycling machine suitable for viscose waste alkali liquor treatment process

Abstract

The utility model discloses a fiber recycling machine suitable for a viscose waste alkali liquor treatment process, and belongs to the technical field of resource recycling in viscose production. The fiber recycling machine is arranged on the rear side of a station of the presser and comprises a shell, a rotating main shaft and a filtering roller, the rotating main shaft and the filtering roller are arranged in the shell, filtering holes are evenly distributed in the filtering roller, and the filtering roller is arranged on the rotating main shaft in a sleeving mode. One end of the rotating main shaft extends out of the shell and is connected with a motor with a speed reducer; helical ribbons which are uniformly distributed are arranged on the inner wall of the filtering roller, a helical ribbon groove is formed between every two adjacent helical ribbons, and the helical ribbons, the filtering roller and the shell are coaxially arranged; a connecting short shaft is arranged between the rotating spindle and the speed reducer, one end of the connecting short shaft extends into a shaft hole of the speed reducer, and the other end of the connecting short shaft is connected with a coupler and the rotating spindle. The problems that an existing fiber recycling machine is poor in separation efficiency, poor in separation quality and the like are solved.

Description

Technical Field

[0001] The utility model relates to a fiber recovery machine, in particular to a fiber recovery machine suitable for a viscose waste alkali liquor treatment process, belonging to the technical field of resource recovery in viscose fiber production. Background Art

[0002] Viscose fiber, abbreviated as viscose fiber, also known as viscose filament, is a kind of man-made fiber. For the production of viscose fiber, it mainly includes processes such as impregnation, pressing, crushing, aging, yellowing, grinding, filtration, ripening, defoaming and spinning.

[0003] In the pressing process, after the pulp porridge is acted on by a press, reflux alkali liquor and alkali cellulose are obtained. Among them, the pressing alkali liquor still contains some alkali cellulose. To realize the recovery of alkali cellulose in the pressing alkali liquor and the filtration of alkali liquor, a fiber recovery machine is generally used for filtration. The fiber recovery machine uses the rotational centrifugal action of a filter roller to separate the alkali cellulose and alkali liquor in the reflux alkali liquor. The specific working process involved is as follows: the alkali liquor after pressing by the press enters the filter roller from the reflux alkali inlet, the motor drives the rotating main shaft and the filter roller to rotate, filters the alkali cellulose carried in the reflux alkali liquor, and finally realizes the separate recovery of alkali cellulose and alkali liquor.

[0004] However, the existing fiber recovery machine still has the following deficiencies:

[0005] First, the separation efficiency and separation quality are poor;

[0006] Second, it cannot ensure the orderly and effective discharge of the separated fiber and alkali liquor;

[0007] Third, one end of the rotating main shaft in the fiber recovery machine is directly installed in the shaft hole of the reducer. After the fiber recovery machine runs for a period of time, the rotating main shaft is prone to bending deformation, resulting in the non-concentricity of the rotating main shaft and damaging the shaft hole of the reducer during rotation; the shaft head of the rotating main shaft also shows phenomena such as shaft surface wear and keyway damage.

[0008] Although the prior art CN219076625U discloses "a fiber recovery machine with a baffle device", it mainly solves the problems of poor sealing and easy leakage of the fiber recovery machine by setting a baffle device between the fixed point of the rotating cylinder on the main shaft and the fixed point of the housing on the main shaft to prevent the alkali liquor from flowing along the main shaft.

[0009] Therefore, a fiber recovery machine is needed that can ensure the separation efficiency and separation quality of alkali cellulose and alkali liquor in the reflux alkali liquor, reduce the wear of the rotating main shaft, and reduce the damage to the shaft hole of the reducer during rotation. Summary of the Invention

[0010] In order to solve the problems of poor separation efficiency and poor separation quality of the existing fiber recovery machine, the utility model provides a fiber recovery machine suitable for a viscose waste alkali liquor treatment process.

[0011] To achieve the above technical objectives, the following technical solutions are proposed:

[0012] A fiber recovery machine applicable to the viscose spent lye treatment process is arranged at the rear side of the working station of a press. The fiber recovery machine includes a housing, a rotating main shaft and a filter drum arranged in the housing. The filter drum is evenly distributed with filter holes and is sleeved on the rotating main shaft. One end of the rotating main shaft extends to the outside of the housing and is connected to a motor with a speed reducer.

[0013] On the inner wall of the filter drum, spiral bands are evenly arranged, and spiral band grooves are formed between adjacent spiral bands. The spiral bands, the filter drum and the housing are coaxially arranged.

[0014] A connecting short shaft is arranged between the rotating main shaft and the speed reducer. One end of the connecting short shaft extends into the shaft hole of the speed reducer, and the other end is connected to the rotating main shaft through a coupling.

[0015] Furthermore, a flushing liquid inlet is arranged at the upper part of the housing, a reflux lye inlet is arranged in the middle of the housing, a fiber outlet and a lye outlet are arranged at the bottom of the housing. The lye outlet is arranged near the reflux lye inlet, and the fiber outlet is arranged far from the reflux lye inlet. This setting can better cooperate with the spiral bands to convey materials, and at the same time, ensure the orderly and effective discharge of the separated fibers and lye.

[0016] Furthermore, the housing includes an upper housing and a lower housing. The setting of this split housing facilitates the assembly, maintenance and replacement of the equipment, etc. The bottom of the lower housing is inclined, which is convenient for collecting and discharging the lye after centrifugal separation.

[0017] Furthermore, the housing includes an upper housing and a lower housing. The setting of this split housing facilitates the assembly, maintenance and replacement of the equipment, etc. A liquid guide groove for guiding the lye to the lye outlet is arranged on the lower housing, which is convenient for collecting and discharging the lye after centrifugal separation.

[0018] Furthermore, the liquid guide groove is inclined and extends to the lye outlet.

[0019] Furthermore, the aperture of the filter holes is 15 - 20 mm.

[0020] Furthermore, the thickness of the spiral bands is 1.5 - 2.5 mm, and the width of the spiral bands is 100 - 120 mm; the width of the spiral band grooves is 140 - 160 mm, and the height of the spiral band grooves is 100 - 120 mm.

[0021] Furthermore, the spiral bands are fixedly arranged on the inner wall of the filter drum by welding (spot welding). This setting effectively ensures the integrity of the filter drum structure, and further improves the stability of its related work.

[0022] Further, a filter screen is sleeved outside the filter drum, and the filter screen is fixed on the filter drum in a detachable manner (the two ends of the filter screen are provided with clamping plates, and the clamping plates are connected by bolts to clamp the filter screen on the filter cylinder).

[0023] Further, the aperture of the filter screen is 2-3 mm.

[0024] In this technical solution, the positional relationships such as "rear side of the work station", "inside", "above", "one end", "between", "the other end", "upper part", "middle part", "bottom part", "close to", "far from", "bottom part", "outside" are defined according to the actual use conditions, which are conventional terms in this technical field and also the conventional terms for those skilled in the art during actual use.

[0025] Adopting this technical solution brings the following beneficial technical effects:

[0026] First, by arranging a spiral ribbon inside the filter drum in the present utility model, it is ensured that during the conveyance of the material (reflux caustic liquor), the separation of fibers from the caustic liquor is achieved, thereby ensuring the recovery of fibers and solving the problems of poor separation efficiency and poor separation quality of existing fiber recovery machines;

[0027] Second, in the present utility model, the direct connection type of the rotating main shaft and the reducer is changed to a coupling connection, which can effectively buffer the wear and tear on the shaft hole of the reducer and the shaft head of the rotating long shaft due to the bending deformation of the rotating long shaft. This not only reduces the failure rate of the fiber recovery machine and saves production costs, but also avoids the work of maintenance, replacement, etc. due to equipment failures, thereby ensuring the separation efficiency and separation quality of the fiber recovery machine, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is the front view of the present utility model;

[0029] Figure 2 It is the side view of the present utility model;

[0030] Figure 3 It is the schematic diagram of the distribution of the spiral ribbon and the filter holes of the present utility model;

[0031] In the figure, 1. housing, 11. upper housing, 12. lower housing, 13. flushing liquid inlet, 14. reflux caustic liquor inlet, 15. fiber outlet, 16. caustic liquor outlet, 2. rotating main shaft, 3. filter drum, 31. filter holes, 32. spiral ribbon, 33. spiral ribbon groove, 4. reducer, 5. motor, 6. connecting short shaft, 7. filter screen, 8. coupling. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following is a clear and complete description of the technical solutions in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0033] Embodiment 1

[0034] A fiber recovery machine applicable to the viscose spent lye treatment process is arranged at the rear side of the working station of the press. As Figure 1-2 shown, the fiber recovery machine includes a housing 1, a rotating main shaft 2 and a filter drum 3 arranged in the housing 1. Filter holes 31 (with a pore diameter of 15 - 20 mm) are evenly distributed on the filter drum 3, and the filter drum 3 is sleeved on the rotating main shaft 2; one end of the rotating main shaft 2 extends to the outside of the housing 1 and is connected to a motor 5 with a speed reducer 4. As Figure 3 shown, spiral bands 32 are evenly arranged on the inner wall of the filter drum 3, and spiral grooves 33 (which are a complete diversion groove and are spirally distributed, facilitating the separation of fibers and lye during the conveyance of materials) are formed between adjacent spiral bands 32. The spiral bands 32, the filter drum 3 and the housing 1 are coaxially arranged; a connecting short shaft 6 is arranged between the rotating main shaft 2 and the speed reducer 4. One end of the connecting short shaft 6 extends into the shaft hole of the speed reducer 4, and the other end is connected to the rotating main shaft 2 through a coupling 8. Because, among them, through the setting of the connecting short shaft 6, when the rotating main shaft 2 is deformed, it can be replaced in time to solve problems such as wear of the rotating main shaft 2 and damage to the shaft hole of the speed reducer 4 caused by the bending deformation of the rotating main shaft 2, thereby improving the centrifugal separation efficiency and quality.

[0035] Among them, both ends of the rotating main shaft 2 are welded to the inner surface of the filter drum 3 with brackets, and both ends of the rotating long shaft are supported by bearing seats. A spiral groove 33 is arranged inside the filter roller. The alkali cellulose is transported along the spiral groove 33 to the outlet end and is output from the fiber recovery machine through the alkali cellulose outlet; the lye flows through the filter holes of the filter roller surface to the inner walls of the upper and lower outer shells and is output from the lye outlet 16 of the fiber recovery machine.

[0036] For the reflux lye at the reflux lye inlet 14: the sodium hydroxide content is about 200 g / L, and the alkali cellulose content is 60 - 80 g / L;

[0037] For the fibers at the fiber outlet 15: the alkali content is 5 - 8%;

[0038] For the lye at the lye outlet 16: the sodium hydroxide content is about 220 g / L, and the alkali cellulose content is 10 - 15 g / L.

[0039] Embodiment 2

[0040] On the basis of Embodiment 1, this embodiment further defines the housing 1 to further illustrate the technical solution.

[0041] A flushing liquid inlet 13 is provided at the upper part of the housing 1, a reflux caustic liquid inlet 14 is provided in the middle of the housing 1, a fiber outlet 15 and a caustic liquid outlet 16 are provided at the bottom of the housing 1. The caustic liquid outlet 16 is arranged near the reflux caustic liquid inlet 14, and the fiber outlet 15 is arranged far from the reflux caustic liquid inlet 14. This setting can better cooperate with the conveying of materials by the spiral ribbon 32. At the same time, it ensures the orderly and effective discharge of the separated fibers and caustic liquid.

[0042] In addition, the housing 1 includes an upper housing 11 and a lower housing 12. The setting of this split housing 1 facilitates the assembly, maintenance, replacement, etc. of the equipment. The bottom of the lower housing 12 is inclined, which is convenient for collecting and discharging the caustic liquid after centrifugal separation.

[0043] Alternatively, the housing 1 includes an upper housing 11 and a lower housing 12. The setting of this split housing 1 facilitates the assembly, maintenance, replacement, etc. of the equipment. A liquid guiding groove for guiding the caustic liquid to the caustic liquid outlet 16 is provided on the lower housing 12, which is convenient for collecting and discharging the caustic liquid after centrifugal separation. The liquid guiding groove is inclined and extends to the caustic liquid outlet 16.

[0044] For the connection between the upper housing 11 and the lower housing 12, it can be connected by a flange or the like.

[0045] Embodiment 3

[0046] On the basis of Embodiments 1-2, this embodiment further defines the spiral ribbon 32 to further illustrate the technical solution.

[0047] The thickness of the spiral ribbon 32 is 1.5 - 2.5 mm, and the width of the spiral ribbon 32 is 100 - 120 mm; the width of the spiral ribbon groove 33 is 140 - 160 mm, and the height of the spiral ribbon groove 33 is 100 - 120 mm. This setting effectively ensures the conveying efficiency of the materials. At the same time, it ensures the separation efficiency and quality of the alkali cellulose and the caustic liquid.

[0048] Among them, the spiral ribbon 32 is fixedly arranged on the inner wall of the filter drum 3 by welding (spot welding). This setting effectively ensures the integrity of the structure of the filter drum 3, and further improves the stability of its related work.

[0049] Embodiment 4

[0050] On the basis of Embodiments 1-3, in order to further ensure the filtering effect, this embodiment further defines:

[0051] A filter screen 7 is sleeved outside the filtering drum 3. The filter screen 7 is fixed on the filtering drum 3 in a detachable manner (both ends of the filter screen 7 are provided with clamping plates, and the clamping plates are connected by bolts to clamp the filter screen 7 on the filter drum). Among them, the aperture of the filter screen 7 is 2-3 mm.

[0052] This setting ensures that the material passes through two layers of filtration of the filtering drum 3 and the filter screen 7, improving the separation effect of alkali cellulose and alkali liquor.

Claims

1. A fiber recovery machine applicable to the viscose waste alkali liquor treatment process, which is arranged at the rear side of the working position of a press. The fiber recovery machine comprises a housing (1), a rotating main shaft (2) and a filter drum (3) arranged in the housing (1). Filter holes (31) are evenly distributed on the filter drum (3), and the filter drum (3) is sleeved on the rotating main shaft (2). One end of the rotating main shaft (2) is connected to a motor (5) with a speed reducer (4). It is characterized in that: On the inner wall of the filter drum (3), there are evenly distributed spiral bands (32). Between adjacent spiral bands (32), there are spiral band grooves (33). The spiral bands (32), the filter drum (3) and the housing (1) are coaxially arranged; Between the rotating main shaft (2) and the speed reducer (4), there is a connecting short shaft (6). One end of the connecting short shaft (6) extends into the shaft hole of the speed reducer (4), and the other end is connected to the rotating main shaft (2) through a coupling (8).

2. The fiber recovery machine applicable to the viscose spent lye treatment process according to claim 1, wherein: On the upper part of the housing (1), there is a flushing liquid inlet (13). In the middle of the housing (1), there is a reflux alkali liquor inlet (14). At the bottom of the housing (1), there are a fiber outlet (15) and an alkali liquor outlet (16). The alkali liquor outlet (16) is arranged near the reflux alkali liquor inlet (14), and the fiber outlet (15) is arranged far from the reflux alkali liquor inlet (14).

3. The fiber recovery machine applicable to the viscose spent lye treatment process according to claim 1 or 2, characterized in that: The housing (1) comprises an upper housing (11) and a lower housing (12), and the bottom of the lower housing (12) is inclined.

4. The fiber recovery machine applicable to the viscose spent lye treatment process according to claim 1 or 2, characterized in that: The housing (1) comprises an upper housing (11) and a lower housing (12). On the lower housing (12), there is a liquid guiding groove for guiding the alkali liquor to the alkali liquor outlet (16).

5. The fiber recovery machine applicable to the viscose spent lye treatment process according to claim 4, characterized in that: The liquid guiding groove is inclined and extends to the alkali liquor outlet (16).

6. The fiber recovery machine applicable to the viscose spent lye treatment process according to claim 1, characterized in that: The aperture of the filter hole (31) is 15 - 20 mm.

7. The fiber recovery machine applicable to the viscose spent lye treatment process according to claim 1, wherein: The thickness of the spiral band (32) is 1.5 - 2.5 mm, and the width of the spiral band (32) is 100 - 120 mm; the width of the spiral band groove (33) is 140 - 160 mm, and the height of the spiral band groove (33) is 100 - 120 mm.

8. The fiber recovery machine applicable to the viscose spent lye treatment process according to claim 1 or 7, characterized in that: The spiral band (32) is fixedly arranged on the inner wall of the filter drum (3) by welding.

9. The fiber recovery machine applicable to the viscose spent lye treatment process according to claim 1, wherein: Outside the filter drum (3), there is a filter screen (7) sleeved, and the filter screen (7) is fixedly arranged on the filter drum (3) in a detachable manner.

10. The fiber recovery machine applicable to the viscose spent lye treatment process according to claim 9, characterized in that: The aperture of the filter screen (7) is 2 - 3 mm.

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