CN109487611B - High-efficient paper pulp filter-pressing dewatering equipment - Google Patents
High-efficient paper pulp filter-pressing dewatering equipment Download PDFInfo
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- CN109487611B CN109487611B CN201811623858.8A CN201811623858A CN109487611B CN 109487611 B CN109487611 B CN 109487611B CN 201811623858 A CN201811623858 A CN 201811623858A CN 109487611 B CN109487611 B CN 109487611B
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/18—De-watering; Elimination of cooking or pulp-treating liquors from the pulp
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Abstract
The invention discloses high-efficiency paper pulp filter-pressing dehydration equipment, and relates to the technical field of papermaking mechanical equipment; it includes base, two crowded thick liquid rollers, screw conveyor and locates the frame casing of base both sides, is provided with the dressing trough supporting disk on the base and drives two crowded thick liquid roller pivoted actuating mechanism, and evenly distributed has the extrusion arch on the periphery of two crowded thick liquid rollers, and corresponds in the inboard of two crowded thick liquid rollers to be provided with and is used for accomodating the bellied holding tank of extrusion and drives the protruding power component who stretches out or receive and release in the holding tank of extrusion. Through implementing this technical scheme, can effectively improve two crowded thick liquids rollers and carry the thick liquids nature of taking of thick liquids, and utilize the extrusion arch to carry out the intermeshing extrusion to the thick liquids in the extrusion district, the ejection of compact concentration of thick liquids can reach more than 46%, can effectively perfect the filter-pressing dewatering effect of paper pulp.
Description
Technical Field
The invention relates to the technical field of papermaking mechanical equipment, in particular to high-efficiency paper pulp filter-pressing dehydration equipment.
Background
The modern papermaking process mainly comprises two links: comprises a pulping section and a papermaking section. Pulping is the first step of papermaking, and generally, three methods for converting wood into pulp include mechanical pulping, chemical pulping and semi-chemical pulping; at present, the papermaking raw materials used by large-scale paper mills are basically processed wood pulp and recycled waste paper, and the waste paper is utilized for papermaking, so that the following beneficial effects are achieved: the operation cost can be reduced, the process links are reduced, and direct pulping and papermaking can be realized; energy (such as water, electricity and coal) and labor resources are saved; the raw material cost and the product cost are reduced, the market competitiveness and the occupancy rate of the commodity are enhanced, and the enterprise benefit is improved; the utilization of the waste paper plays a positive role in reducing the pollution of our living environment and solid garbage; green and environment-friendly, and sustainability development is maintained.
The pulp filter-pressing dewatering equipment in the prior art is mainly a double-roller presser, and mainly comprises a pair of squeezing rollers, a pulp tank, a screw conveyor, a scraper and an oil pressure system, wherein the double rollers are horizontally arranged in the pulp tank, and are operated oppositely through the double rollers, pulp is squeezed and dewatered by virtue of linear pressure between the two rollers, filtrate enters a double-roller axial liquid discharge port through a filter screen and is discharged, squeezed pulp rises through the double rollers, the pulp is scraped by the scraper at the side surface of the squeezing rollers and is discharged by a screw pulper, the pulp inlet concentration is 3-5%, and the pulp outlet concentration is about 30%. However, the prior two-roll press has the following technical problems in the use process: the portable pulp extruded by the two pulp extruding rollers at a time is limited, the pulp is extruded only by the linear pressure between the two pulp extruding rollers, the distance between the two pulp extruding rollers needs to be adjusted repeatedly, and the operation is complicated; and improper adjustment easily causes the backflow of the extruded paper pulp fibers to the pulp tank, thereby affecting the squeezing efficiency.
Disclosure of Invention
In order to solve the technical problems that in the prior art, the two pulp squeezing rollers carry poor pulp and the linear pressure extrusion is insufficient, so that the pulp squeezing effect is influenced, the invention aims to provide the high-efficiency pulp press-filtering dehydration equipment, which can effectively improve the pulp carrying performance of the pulp squeezed by the two pulp squeezing rollers, and can improve the press-filtering dehydration effect of the pulp by utilizing the squeezing bulges to carry out mutual meshing extrusion on the pulp in the squeezing area.
The invention specifically adopts the following technical scheme for realizing the purpose:
a high-efficiency paper pulp filter-pressing dehydration device comprises a base, two pulp squeezing rollers, a spiral conveying mechanism and a frame shell, wherein the frame shell is arranged on two sides of the base; when the extrusion protrusions are close to the extrusion area, the power assembly is used for driving the extrusion protrusions positioned in the extrusion area on the pulp extrusion rollers to extend out, and the extrusion protrusions on the two pulp extrusion rollers are mutually meshed to extrude paper pulp; when the extrusion bulge leaves the extrusion area, the power assembly drives the extrusion bulge to be stored and released along the corresponding containing groove.
The extrusion area in the technical scheme is an area where the extrusion bulges on the two squeezing rollers are mutually meshed and extruded.
Optionally, the two pulp squeezing rollers are respectively a driving pulp squeezing roller and a driven pulp squeezing roller, two ends of the driving pulp squeezing roller and two ends of the driven pulp squeezing roller are fixed on the base through bearing seats, the driving mechanism is connected with the driving pulp squeezing roller, and the driven pulp squeezing rollers are meshed with each other through the squeezing bulges on the two pulp squeezing rollers to synchronously rotate. The two squeezing rollers rotate to the squeezing area and are mutually meshed and squeezed through the squeezing bulges on the surfaces of the extended squeezing rollers, so that the driven squeezing rollers can be driven to synchronously rotate and squeeze only by driving the driving squeezing rollers to rotate by one driving piece, a gear structure is not required to be additionally arranged, space and equipment are saved, and the mechanical structure is simpler and more effective; and the rotating speeds of the two squeezing rollers are ensured to be the same, so that the two squeezing rollers synchronously carry slurry to move, and the completeness of the slurry fiber under extrusion is ensured.
Optionally, the driving squeezing roller and the driven squeezing roller are respectively provided with a high-pressure pipe fixedly connected with the base inside, two of the high-pressure pipes are separated by a fixed partition plate to form a high-pressure area and a low-pressure area, the two high-pressure areas are oppositely arranged along one side, close to the squeezing area, of the fixed partition plate, and the squeezing protrusions are driven by the pressure of the high-pressure area or the low-pressure area to extend along the outer side of the accommodating groove or retract and retract towards the inner side of the accommodating groove. In order to facilitate the micro-movement and fixation of the high-pressure pipe on the base, a plurality of threaded holes can be arranged on the base, and the base is supported at two ends of the high-pressure pipe through a support and seals the two ends; in order to avoid the mutual air leakage of the high-pressure area and the low-pressure area, the high-pressure area and the low-pressure area are correspondingly separated, the partition plate can adopt the existing high-pressure resistant material, and a sealing arrangement is adopted in a gap between the partition plate and the rotation of the driving squeezing roller or the driven squeezing roller, so that the rotation of the driving squeezing roller or the driven squeezing roller to the high-pressure area or the low-pressure area can be ensured to drive the squeezing protrusions to move through the corresponding pressure.
Optionally, the radian of the surface of the extrusion bulge completely contained in the containing groove is matched with the radian of the circumferential surface of the extrusion roller; the both ends of high-pressure pipe are provided with the sealed lid that is used for sealed high-pressure district and low-pressure area, sealed lid rotates with the roller of initiative crowded thick liquid roller and driven crowded thick liquid roller to be connected, power component include with the high-pressure pump of high-pressure district intercommunication and with the evacuation pump of low-pressure district intercommunication, the equal fixed mounting of high-pressure pump and vacuum pump is on the base, and the pipeline and the high-pressure district intercommunication of sealed lid are passed to the high-pressure pump, and the pipeline and the low-pressure district intercommunication of vacuum pump warp through sealed lid. In order to better scrape the extruded pulp from the pulp extruding roller, the surface radian of the extruding bulge which is completely contained in the containing groove is designed to be matched with the circumferential surface radian of the pulp extruding roller; in order to better ensure the sealing performance of the high-pressure area and the low-pressure area, the diameter of the sealing cover is designed to be larger than the inner diameter of the corresponding driving squeezing roller or the driven squeezing roller, and a track which rotates in a limiting way with the driving squeezing roller or the driven squeezing roller is arranged on the edge of the sealing cover, so that the sealing performance of the high-pressure area and the low-pressure area in the driving squeezing roller or the driven squeezing roller is better ensured.
Optionally, the extrusion protrusions are in a strip shape and are uniformly distributed along the central axial lines of the two extrusion rollers at equal angles, the bottom of each accommodating groove is provided with an air pressure channel extending to a corresponding high pressure area or low pressure area, and the high pressure pipe is provided with a gap communicated with the air pressure channel; the thickness gap of the air pressure channel is gradually reduced along the direction close to the high-pressure pipe, an elastic part and a limiting iron ball are arranged in the air pressure channel, one end of the elastic part penetrates through the bottom of the accommodating groove to be connected with the extrusion bulge, the other end of the elastic part is connected with the limiting iron ball, and the limiting iron ball can move in the air pressure channel; and a limiting block used for limiting the extrusion protrusion to completely extend out of the accommodating groove is arranged on the inner wall of the air pressure channel. Specifically, the diameter of spacing ball is greater than the minimum clearance of atmospheric pressure passageway, prevent to get into high nip or low-pressure region in, be provided with the elastic construction in extrusion bellied bottom, can avoid two crowded thick liquid rollers mechanical damage to appear in extrusion process, the extrusion arch of extrusion district intermeshing has better degree of engagement, and the design adaptability of elastic construction is to the extrusion clearance of paper pulp, need not to relapse the interval between two squeeze rollers of manual regulation, avoid the complexity operation but still can't guarantee the problem of line pressure's extrusion effect, avoid paper pulp fibre after the extrusion to flow back to the stock chest once more, the paper pulp that the spring restoring force that utilizes the elastic construction to have requires not high to the extrusion force, can further guarantee the integrality of paper pulp fibre in extrusion process.
Optionally, the bottom that the extrusion arch is close to holding tank one side all is provided with pressure sensor, still includes the controller, the controller is connected with pressure sensor, actuating mechanism and power component respectively. Pressure sensor can pass through communication assembly to transmit to the controller to the protruding pressure of receiving of extrusion, and the bellied pressure of real time monitoring extrusion to the real-time pressure of power component output signal regulation high-pressure district or low-pressure area through the controller, according to the extrusion force of the different categorised regulation of extrusion thick liquids to the thick liquids, guarantee the extrusion effect of different ground paste and avoid the crowded thick liquids roller to receive the damage, so that equipment work safely and stably.
Optionally, two sides of the stock chest supporting plate are provided with cleaning mechanisms for cleaning the two squeezing rollers, each cleaning mechanism comprises a cleaning pipeline, a nozzle and a water pump connected with the cleaning pipeline, and the nozzle is connected to the tail end of the cleaning pipeline and fixed on the stock chest supporting plate; and the cleaning pipeline is provided with an electromagnetic valve, and the electromagnetic valve is connected with a controller. The extrusion bulge can be provided with a filter hole communicated with the high-pressure area or the low-pressure area, so that when the extrusion bulge approaches to the low-pressure area, pulp can be filtered and dehydrated in a vacuum filtration mode to achieve the aim of improving the pulp concentration, and a little waste liquid extruded into the air pressure channel by the high-pressure area can be discharged through the low-pressure area to achieve the aim of further performing filter pressing and dehydration on the pulp; and the nozzle of the cleaning mechanism is right opposite to the two squeezing rollers, and can be automatically controlled to spray and clean by setting time, so that the blockage of filter holes or the attachment of residues on the two squeezing rollers is avoided, the cleaning efficiency is improved, and the labor force is saved.
Optionally, still including setting up respectively in two the scraper of crowded thick liquid roller up end and the elastic mechanism of installing on the frame shell, the scraper includes by last scraper rod, V type link and the scraper head that connects gradually under to, the upper end of scraping the cutter rod is connected with elastic mechanism, be equipped with on the frame shell and supply the gliding slide rail from top to bottom of scraper rod, V type link one end is articulated with scraper rod lower extreme, and the corner end of V type link is articulated with the frame shell, the other end with scrape first fixed connection, scrape the scraper head all the time with the roll face contact of crowded thick liquid roller. Specifically, elastic mechanism is including fixing spacing case on the frame casing and locating extension spring and the iron plate in the spacing case, and iron plate and extension spring are connected gradually to the upper end of scraper pole to the scraper can be adjusted automatically along with the removal of crowded thick liquid roller, makes the better thick liquids of peeling off on the crowded thick liquid roller of scraper, and the practicality is good.
Optionally, the screw conveying mechanism is a variable-diameter variable-pitch screw structure, and the screw conveying mechanism comprises a casing, a servo motor, a rotating shaft connected with an output shaft of the servo motor and a telescopic shaft sleeve sleeved on the rotating shaft, the telescopic shaft sleeve is provided with helical blades, a flexible section is arranged on the telescopic shaft sleeve between two adjacent helical blades, a hydraulic pump synchronously rotating with the rotating shaft is arranged on the rotating shaft along the feed end of the screw conveying mechanism, and the flexible shaft sleeve is pushed to move along the direction of the discharge end. Specifically, screw conveying mechanism's pivot is the toper axis body, and the diameter of axis body is crescent to the discharge end from the feed end, and helical blade's pitch reduces gradually to the discharge end from the feed end, and the bellows cover that elastic material made is adopted to the flexible axle sleeve of two adjacent helical blade's flexible section, and the ground paste receives the extrusion promotion that the hydraulic pump is relapse along with spiral propulsion extrusion in, can further improve the filter-pressing dewatering effect of paper pulp.
Optionally, be provided with the water filling port on the casing and with inlet channel and the outlet conduit of water filling port intercommunication, be provided with the check valve of intaking on the inlet channel, the water filling port coats and is stamped the filter screen. On one hand, the design of the water injection port can inject water into the shell of the spiral conveying mechanism to clean the spiral blade and the telescopic shaft sleeve, and the telescopic shaft sleeve and the spiral blade which have elasticity also have better cleaning effect; a sealing block matched with the inner diameter of the shell is arranged at one end, close to the hydraulic pump, of the telescopic shaft sleeve, and black liquor in the slurry flows out along a water outlet pipeline through a filter screen in the process of extruding the slurry; and the tensile in-process of telescopic shaft sleeve, the pressure in the casing reduces, and the check valve starts and can pour into the clear water into to the casing, fully washs thick liquids, and prevents that thick liquids from being excessively extruded and appear that screw conveying mechanism is blocked dead phenomenon.
As described above, the present invention has at least the following advantageous effects:
1. the two squeezing rollers are uniformly provided with the squeezing bulges which can stretch and move, the squeezing bulges can carry more slurry into the squeezing area, the mutually meshed squeezing bulges can fully squeeze the paper pulp, the squeezing bulges can prevent squeezed paper pulp fibers from flowing back into the pulp tank, and the filter-pressing and dewatering effects of the paper pulp are improved; and the inboard at the crowded thick liquid roller corresponds the holding tank that is provided with and extrudes protruding size looks adaptation, receive and release the protruding in-process of extrusion and can effectively stay the bellied surface of extrusion and the periphery of crowded thick liquid roller with the paper pulp that holds in the palm greatly in the extrusion arch, and receive and release the bellied surface radian of extrusion and the periphery radian looks adaptation of crowded thick liquid roller in the holding tank completely, thereby do not influence the paper pulp after the extrusion and be scraped by the scraper in the side of crowded thick liquid roller, again through the output of screw conveyor mechanism, the adjustment to the scraper structure has been saved, this structural design is ingenious.
2. The structural design of the mutually meshed extrusion of the extrusion bulges also omits the design of a driving piece or a gear structure, the driven pulp extrusion roller can be driven to synchronously rotate and extrude only by driving the driving pulp extrusion roller to rotate by the driving piece, the gear structure is not required to be additionally arranged, the space and the equipment are saved, and the mechanical structure is simpler and more effective; and the rotating speeds of the two squeezing rollers are ensured to be the same, so that the two squeezing rollers synchronously carry slurry to move, and the completeness of the slurry fiber under extrusion is ensured.
3. The power for driving the extrusion bulge to move is mainly driven by air pressure, the extrusion bulge can be quickly and conveniently adjusted to extend along the outer side of the accommodating groove or retract and retract towards the inner side of the accommodating groove by changing the pressure of a high-pressure area or a low-pressure area, the design of an elastic structure in an air pressure channel can adaptively adjust the extrusion gap of paper pulp, the interval between two extrusion rollers does not need to be adjusted manually repeatedly, and the problem that the extrusion effect of linear pressure cannot be ensured even in complex operation is avoided; and the mechanical damage of the two squeezing rollers in the squeezing process is avoided, the squeezed paper pulp fibers flow back to the pulp tank again, the paper pulp with low requirement on the squeezing force degree by utilizing the spring restoring force of the elastic structure can be further ensured, and the completeness of the paper pulp fibers in the squeezing process can be further ensured.
4. According to the invention, the pressure sensor is arranged at the bottom of the extrusion bulge, and the pressure sensor is matched with the controller, so that the extrusion force of slurry can be monitored in real time, and the extrusion bulge can be completely accommodated in the accommodating groove when the slurry is scraped; the extrusion force to the thick liquids is adjusted according to different classification of extrusion thick liquids, guarantees the extrusion effect of different ground paste and avoids the crowded thick liquids roller to receive the damage to make equipment work safely and stably.
5. The invention is designed with a cleaning mechanism for cleaning two squeezing rollers, and the squeezing bulges are provided with filter holes communicated with a high-pressure area or a low-pressure area, so that when the squeezing bulges approach to the low-pressure area, pulp can be filtered and dehydrated in a vacuum filtering mode to achieve the aim of improving the pulp concentration, and a little waste liquid squeezed into an air pressure channel by the high-pressure area can be discharged through the low-pressure area to further achieve the aim of pulp filter pressing and dehydration; and the nozzle of the cleaning mechanism is right opposite to the two squeezing rollers, and can be automatically controlled to spray and clean by setting time, so that the blockage of filter holes or the attachment of residues on the two squeezing rollers is avoided, the cleaning efficiency is improved, and the labor force is saved.
6. The reducing rotating shaft of the screw conveying mechanism is provided with the telescopic shaft sleeve capable of moving back and forth, the flexible section made of elastic materials is arranged between two adjacent screw blades on the telescopic shaft sleeve, and slurry is repeatedly extruded and pushed by the hydraulic pump while being pushed and extruded along with the screw, so that the filter pressing and dewatering effects of paper pulp can be further improved.
Drawings
FIG. 1 is a schematic view of a high efficiency press filter dewatering apparatus for pulp according to the present invention;
FIG. 2 is an enlarged cross-sectional view of the intermeshing extrusion of two of the squeeze rolls of FIG. 1;
FIG. 3 is a top view of the connection of the two squeeze rolls of FIG. 1 to the drive mechanism;
FIG. 4 is a schematic view of the screw conveyor of FIG. 1;
fig. 5 is an enlarged schematic view of a portion a in fig. 4.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: 1-base, 2-driving squeezing roller, 21-squeezing bulge, 22-holding groove, 23-squeezing area, 24-roller shaft, 25-air pressure channel, 26-elastic piece, 27-limiting iron ball, 28-limiting block, 3-driven squeezing roller, 4-bearing seat, 5-pulp groove supporting plate, 6-driving mechanism, 61-driving motor, 62-driving gear, 63-driven gear, 64-toothed chain, 7-high pressure pipe, 71-high pressure area, 72-low pressure area, 73-fixed clapboard, 8-cleaning mechanism, 81-cleaning pipeline, 82-nozzle, 83-electromagnetic valve, 9-spiral conveying mechanism, 91-machine shell, 92-servo motor, 93-rotating shaft, 94-telescopic shaft sleeve, 95-helical blade, 96-flexible section, 97-hydraulic pump, 98-sealing block, 10-frame shell, 11-sealing cover, 12-limit box, 13-extension spring, 14-iron block, 15-scraper rod, 16-V type connecting frame, 17-scraper head, 18-slide rail, 30-water inlet pipe, 31-water outlet pipe, 32-one-way valve, 33-feeding end and 34-discharging end.
EXAMPLE 1
The embodiment is basically as shown in figure 1: the embodiment provides a high-efficiency paper pulp filter-pressing dehydration device, which comprises a base 1, two pulp squeezing rollers, a spiral conveying mechanism 9 and rack shells 10 arranged on two sides of the base 1, wherein the rack shells 10 on the two sides are hinged with the base 1 through hydraulic cylinders so that the rack shells 10 on the two sides can rotate towards two outer sides to be opened or closed inwards, a pulp tank supporting plate 5 and a driving mechanism 6 for driving the two pulp squeezing rollers to rotate are arranged on the base 1, the two pulp squeezing rollers are horizontally arranged in the pulp tank supporting plate 5, a liquid outlet can be formed in the bottom of the pulp tank supporting plate, liquid drainage is carried out along the axial direction of the pulp squeezing rollers, and the two pulp squeezing rollers are respectively a driving pulp squeezing roller 2 and a driven pulp squeezing roller; and the two ends of the driving squeezing roller 2 and the driven squeezing roller 3 are fixed on the base 1 through the bearing seats 4.
The screw conveying mechanism 9 is positioned above an extrusion area 23 formed by the two squeezing rollers, the circumferential surfaces of the two squeezing rollers are uniformly distributed with squeezing protrusions 21, and the inner sides of the two squeezing rollers are correspondingly provided with accommodating grooves 22 for accommodating the squeezing protrusions 21 and power components for driving the squeezing protrusions 21 to extend out of or retract along the accommodating grooves 22; specifically, liquid outlet holes can be formed in the circumferential direction of the two squeezing rollers along the non-squeezing protrusion arrangement area, and the liquid outlet holes are communicated with liquid outlet channels arranged in the axial direction of the squeezing rollers, so that liquid can be discharged in the axial direction of the squeezing rollers; when the extrusion protrusions 21 are close to the extrusion area 23, the power assembly is used for driving the extrusion protrusions 21 positioned in the extrusion area on the pulp extrusion roller to extend out, and the power provided by the power assembly enables the extrusion protrusions 21 not to extend out of the accommodating groove 22 completely, so that the extrusion protrusions 21 on the two pulp extrusion rollers are meshed with each other to extrude the paper pulp, and the paper pulp in the extrusion area 23 is fully extruded; when the extrusion bulge 21 leaves the extrusion area 23, the power assembly is used for driving the extrusion bulge 21 extending out of the outer side of the accommodating groove 22 to be accommodated along the corresponding accommodating groove 22, and the surface radian of the extrusion bulge 21 completely accommodated in the accommodating groove 22 is matched with the radian of the circumferential surface of the pulp extruding roller; wherein the squeezing zone 23 is the area where the squeezing protrusions 21 on the two squeezing rolls are squeezed into engagement with each other.
In the embodiment, the driving mechanism 6 is connected with the driving squeezing roll 2, and because the driving squeezing roll is meshed with the squeezing protrusions 21 on the surfaces of the driven squeezing roll for squeezing in the squeezing area 23, and the driven squeezing roll is meshed with the squeezing protrusions on the two squeezing rolls for synchronous rotation, the driving squeezing roll 2 can be driven to rotate by only one driving piece, so that the driven squeezing roll 3 can be driven to synchronously rotate for squeezing without additionally arranging a gear structure, and the space and equipment are saved; as shown in fig. 1 and fig. 3, the driving mechanism 6 includes a driving motor 61, a driving gear 62 connected to an output shaft of the driving motor 61 through a coupling, a driven gear 63 disposed on the roller shaft 24 of the driving squeezing roller 2, and a toothed chain 64 for driving and connecting the driving gear 62 and the driven gear 63, so that the driving squeezing roller 2 is driven by a servo motor 92 to rotate, the driven squeezing roller 3 can be driven to synchronously rotate through the meshed squeezing protrusions 21, the gear toothed chain 64 has a stable driving structure, and the mechanical structure is simple and effective; and the rotating speeds of the two squeezing rollers are ensured to be the same, so that the two squeezing rollers synchronously carry slurry to move, and the completeness of the slurry fiber under extrusion is ensured.
As shown in fig. 1 and 2, the inner sides of the driving squeezing roller 2 and the driven squeezing roller 3 are respectively provided with a high-pressure pipe 7 fixedly connected with the base 1, specifically, in order to facilitate the high-pressure pipe 7 to be slightly moved and fixed on the base 1, a plurality of threaded holes can be arranged on the base 1, the threaded holes are supported at two ends of the high-pressure pipe 7 through a support, and the two ends of the high-pressure pipe 7 are sealed, and a specific sealing structure can adopt the prior art, and is not described herein; a high-pressure area 71 and a low-pressure area 72 are respectively arranged in the high-pressure pipes 7 of the driving squeezing roller 2 and the driven squeezing roller 3; in order to avoid the mutual air leakage of the high-pressure area 71 and the low-pressure area 72, the high-pressure area 71 and the low-pressure area 72 are separated by a fixed partition plate 73, and the straight distance between the upper end and the lower end of each partition plate is the same as the inner diameter of the corresponding driving squeezing roller 2 or driven squeezing roller 3; the baffle can adopt the existing high pressure resistant material, adopts the sealed setting in the baffle and initiative squeeze roll 2 or the driven squeeze roll 3 pivoted clearance, and concrete seal structure can adopt prior art, does not need here to describe in detail.
Two high pressure zones 71 are oppositely arranged along one side of the fixed partition 73 close to the squeezing zone 23, and two low pressure zones 72 are oppositely arranged along the other side of the partition; the extrusion bulge 21 is driven by the pressure of the high pressure area 71 or the low pressure area 72 to extend along the outer side of the accommodating groove 22 or retract towards the inner side of the accommodating groove 22; in practice, it is ensured that the rotation of the driving or driven squeezing roller 2 or 3 to the high-pressure zone 71 or the low-pressure zone 72 can drive the squeezing protrusions 21 to move by corresponding pressure.
In order to effectively seal two ends of the high-pressure pipe 7, sealing covers 11 for sealing a high-pressure area 71 and a low-pressure area 72 are arranged at two ends of the high-pressure pipe 7, a groove for embedding the high-pressure pipe 7 is arranged in the middle of each sealing cover 11, each sealing cover 11 is rotatably connected with a roller shaft 24 of each driving squeezing roller 2 and a roller shaft 24 of each driven squeezing roller 3, specifically, the diameter of each sealing cover 11 is larger than the inner diameter of the corresponding driving squeezing roller 2 or the corresponding driven squeezing roller, a track for limiting rotation of the driving squeezing rollers 2 or the driven squeezing rollers is arranged on the edge of each sealing cover 11, and the specific installation sequence is as follows: firstly, embedding two ends of a high-pressure pipe 7 into a groove of a sealing cover 11, so that the high-pressure pipe 7 is fixedly connected with the sealing cover 11; then, two ends of a roll shaft 24 of the driving squeezing roll 2 or the driven squeezing roll 3 are embedded into the track at the edge of the sealing cover 11, so that the roll shaft 24 is rotatably connected with the sealing cover 11; finally, the sealing cover 11 is fixed on a support of the base 1, and the sealing cover 11 can be used for limiting and better ensuring the sealing performance of a high-pressure area 71 and a low-pressure area 72 in the driving squeezing roller 2 or the driven squeezing; the power assembly comprises a high-pressure pump communicated with the high-pressure area 71 and a vacuum pumping pump communicated with the low-pressure area 72 so as to enable the high-pressure area 71 to generate high pressure and the low-pressure area 72 to reduce the pressure, the high-pressure pump and the vacuum pump are fixedly arranged on the base, the high-pressure pump is communicated with the high-pressure area through a pipeline penetrating through the sealing cover, and the vacuum pump is communicated with the low-pressure area through a pipeline penetrating through the sealing cover; the concrete model of evacuation pump and high-pressure pump, the concrete connection mode of evacuation pump and low-pressure area 72 and the concrete connection mode of high-pressure pump and high-pressure area 71 can adopt prior art, optionally, high-pressure pump and vacuum pump all fixed mounting are on the base, the high-pressure pump is through passing the pipeline and the high-pressure area intercommunication of sealed lid, the vacuum pump is through passing the pipeline and the low-pressure area intercommunication of sealed lid, only need to guarantee that high-pressure area 71 or the corresponding pressure in low-pressure area 72 can drive extrusion arch 21 and extrude thick liquids along the incomplete extension in holding tank 22 outside or receive and release to holding tank 22 inboard can.
The extrusion bulges 21 are in a strip shape, the size of the accommodating grooves 22 is matched with that of the extrusion bulges 21, so that when the extrusion bulges 21 are accommodated in the accommodating grooves 22, slurry attached to the extrusion bulges 21 can overflow on the circumferential surfaces of the pulp squeezing rollers, the extrusion bulges 21 are uniformly distributed along the central axial lines of the two pulp squeezing rollers at equal angles, the bottom of each accommodating groove 22 is provided with an air pressure channel 25 extending to a corresponding high-pressure area 71 or low-pressure area 72, and the high-pressure pipe 7 is provided with a gap communicated with the air pressure channel 25; the thickness gap of the air pressure channel 25 is gradually reduced along the direction close to the high-pressure pipe 7, an elastic part 26 and a limiting iron ball 27 are arranged in the air pressure channel 25, one end of the elastic part 26 penetrates through the bottom of the accommodating groove 22 to be connected with the extrusion bulge 21, the other end of the elastic part is connected with the limiting iron ball, and the elastic part can be made of corrosion-resistant materials such as metal corrugated pipes; the limiting iron ball 27 can move in the air pressure channel, and specifically, the diameter of the limiting iron ball 27 is larger than the minimum gap of the air pressure channel 25; and a stopper 28 for limiting the extrusion protrusion 21 from completely protruding out of the receiving groove 22 is provided on the inner wall of the air pressure channel 25.
This embodiment is provided with the elastic construction in the bottom that extrudes protruding 21, can avoid two crowded thick liquid rollers to appear mechanical damage in extrusion process, the protruding 21 of extrusion of 23 intermeshing in extrusion district has better degree of engagement, and the design adaptability of elastic construction is to the extrusion clearance of paper pulp, need not to relapse the interval between two squeeze rollers of manual regulation, avoid the complexity operation but still can't guarantee the problem of line pressure's extrusion effect, the paper pulp fibre of avoiding after the extrusion flows back to the thick liquid inslot once more, the paper pulp that the spring restoring force that utilizes the elastic construction to have not high requirement to the extrusion degree, can further guarantee the integrality of paper pulp fibre in extrusion process.
The bottom of the extrusion bulge 21 close to one side of the accommodating groove 22 is provided with a pressure sensor, and the extrusion bulge further comprises a controller which is respectively connected with the pressure sensor, the driving mechanism 6 and the power assembly; pressure sensor can pass through communication assembly to transmit to the controller to the protruding 21 pressure of receiving of extrusion, and the protruding 21 pressure of real time monitoring extrusion to the vacuum pump of taking out and the real-time pressure of high-pressure region 71 or low-pressure region 72 of high-pressure pump output signal regulation through the controller, according to the extrusion force of the different categorised regulation of extrusion thick liquids to thick liquids, guarantee the extrusion effect of different ground paste and avoid the pulp extruding roller to receive the damage, so that equipment work safely and stably.
The structure of other aspects of the pulp press filtration dewatering equipment can directly adopt the prior art, and the detailed description will not be provided in the specification; and the above-mentioned electric equipment is connected with the existing power module, and is not described herein again.
The specific implementation manner of this embodiment is: when the pulp squeezing device works, paper pulp is introduced into a pulp tank in the pulp tank supporting plate 5, the driving motor 61 can drive the driving squeezing roller 2 to rotate through the transmission structure of the gear tooth chain 64, and then the squeezing protrusions 21 which are mutually meshed and squeezed drive the driven squeezing roller 3 to synchronously rotate along with the driving squeezing roller 2, when the squeezing protrusions 21 on the driving squeezing roller 2 and the driven squeezing roller 3 are close to the squeezing area 23, the squeezing protrusions 21 on the two squeezing rollers extend out along the accommodating groove 22 through the pressure of the high-pressure area 71 inside the squeezing rollers and are mutually meshed and squeezed in the squeezing area 23; the extrusion bulges 21 extending out along the accommodating groove 22 can extend to the deep part of the pulp in the pulp tank, so that more pulp can be carried into the extrusion area 23, the mutually meshed extrusion bulges 21 can fully extrude the pulp, and the arrangement of the extrusion bulges 21 can also prevent the extruded pulp fiber from flowing back into the pulp tank, thereby perfecting the filter-pressing dehydration effect of the pulp; meanwhile, when the extrusion bulge 21 leaves the extrusion area 23, the outer side pressure of the pulp extrusion roller drives the extrusion bulge 21 extending out of the containing groove 22 to be contained along the corresponding containing groove 22, paper pulp carried on the extrusion bulge 21 can be effectively remained on the surface of the extrusion bulge 21 and the circumferential surface of the pulp extrusion roller in the containing process, the surface radian of the extrusion bulge 21 completely contained in the containing groove 22 is matched with the circumferential surface radian of the pulp extrusion roller, the extruded paper pulp is not influenced to be scraped off by a scraper on the side surface of the pulp extrusion roller and then is output through the spiral conveying mechanism 9, the adjustment of the scraper structure is omitted, the filter pressing and dewatering effect on the paper pulp can be effectively improved, the pulp concentration output by the spiral pulper is detected to be 46%, the structure design is ingenious, and the use is convenient and flexible.
Example 2
Example 2 is substantially the same as example 1 except that: referring to fig. 1, the present embodiment further includes a cleaning mechanism 8 disposed on the left and right sides of the vat supporting plate 5 for cleaning two squeezing rollers, specifically, the cleaning mechanism 8 includes a cleaning pipe 81, a nozzle 82 and a water pump connected to the cleaning pipe 81, the nozzle 82 is connected to the end of the cleaning pipe 81 and fixed on the vat supporting plate 5; and the cleaning pipeline 81 is provided with an electromagnetic valve 83, and the electromagnetic valve 83 is connected with the controller. The extrusion bulge 21 can be provided with a filter hole communicated with the high-pressure area 71 or the low-pressure area 72, so that when the extrusion bulge 21 approaches the low-pressure area 72, pulp can be filtered and dewatered by the conventional vacuum filtration mode to achieve the aim of improving the pulp concentration, and a little waste liquid extruded into the air pressure channel 25 by the high-pressure area 71 can be discharged by the low-pressure area 72 to further achieve the aim of filter pressing and dewatering of the pulp; and the nozzle 82 of the cleaning mechanism 8 is right opposite to the two squeezing rollers, and can be automatically controlled to spray and clean by setting time, so that the blockage of filter holes or the attachment of residues on the two squeezing rollers is avoided, the cleaning efficiency is improved, and the labor force is saved.
Example 3
Example 3 is substantially the same as example 2 except that: the embodiment provides a high-efficiency pulp press filtration dewatering device, please refer to fig. 1, and the embodiment further comprises an improvement of scrapers respectively arranged on the upper end surfaces of two pulp squeezing rollers, specifically, an elastic mechanism is arranged on the frame shell 10, the elastic mechanism comprises a limit box 12 fixed on the frame shell 10, and a tension spring 13 and an iron block 14 arranged in the limit box 12, the scrapers comprise scraper rods 15 sequentially connected from top to bottom, v type link 16 and scraper head 17, the upper end of scraper rod 15 is connected with extension spring 13 through iron plate 14, offers on the frame casing and supplies scraper rod 15 gliding slide rail 18 from top to bottom, and 16 one end of V type link is articulated with scraper rod 15 lower extreme, and the corner end of V type link 16 is articulated with frame casing 10, and the other end and scraper head 17 fixed connection, scraper head 17 all the time with crowded pulp roller's roll surface contact. When the extrusion protrusions 21 on the two squeezing rollers enter the low-pressure area 72 from the high-pressure area 71, the extrusion protrusions 21 are received and released along the containing grooves 22, and the surface radian matched with the radian of the circumferential surface of the squeezing rollers is formed, so that the scraper can automatically adjust along with the movement of the squeezing rollers along the outer side, the scraper head 17 rotates along the roller surface to peel off the slurry and drives the V-shaped connecting frame 16 to rotate, one end of the V-shaped connecting frame 16, which is connected with the scraper rod 15, upwards moves along the sliding rail 18, drives the scraper rod 15 to upwards move along the sliding rail 18, so that the iron block 14 is automatically adjusted along the contraction of the tension spring 13, and the scraper can better peel off the slurry on the squeezing rollers; and the design of the iron block 14 forms pre-tightening pressure on the scraper rod 15, so that a scraper head 17 fixedly connected with the V-shaped connecting frame 16 is always in contact with the roll surface of the pulp squeezing roll to strip pulp.
Example 4
Example 4 is essentially the same as example 3, except that: this embodiment provides a high-efficiency pulp press-filtering dewatering device, please refer to fig. 1, 4 and 5, the screw conveying mechanism 9 is a screw structure with variable diameter and pitch, and the screw conveying mechanism 9 comprises a casing 91, a servo motor 92, a rotating shaft 93 connected with an output shaft of the servo motor 92 and a telescopic shaft sleeve 94 sleeved on the rotating shaft 93, the telescopic shaft sleeve 94 is provided with screw blades 95, the telescopic shaft sleeve 94 between two adjacent screw blades 95 is provided with a flexible section 96, the rotating shaft 93 along the feeding end 33 of the screw conveying mechanism 9 is provided with a hydraulic pump 97 rotating synchronously with the rotating shaft 93, a rotating disc fixedly connected with the rotating shaft 93 is arranged at the feed end 33 of the rotating shaft 93, the central axial line of the rotating disc and the central axial line of the rotating shaft 93 are on the same straight line, and the six hydraulic pumps 97 are uniformly distributed on the rotating disc at equal angles; and the end part of the telescopic shaft sleeve 94 close to the output shaft of the hydraulic pump 97 is provided with a sealing block 98 matched with the inner diameter of the shell 91, the inner side of the sealing block 98 is provided with an inner thread, the outer side of the telescopic shaft sleeve 94 is provided with an outer thread matched with the outer thread of the sealing block 98 for fixedly connecting with the sealing block 98 by threads, the end parts of the output shafts of the six hydraulic pumps 97 are fixedly detachably connected with a sealing sleeve, for example, the output shafts are connected by a buckle or hinged, and the output shafts are used for pushing the sealing block 98 to drive the telescopic shaft sleeve 94 to move back and forth along the. Specifically, the rotating shaft 93 of the spiral conveying mechanism 9 is a conical shaft body, the diameter of the shaft body is gradually increased from the feed end 33 to the discharge end 34, the pitch of the spiral blades 95 is gradually reduced from the feed end 33 to the discharge end 34, the telescopic shaft sleeves 94 of the flexible sections 96 of the two adjacent spiral blades 95 adopt corrugated sleeves made of elastic materials, slurry is repeatedly pushed by the hydraulic pump 97 along with the extrusion of spiral propulsion, the filter pressing and dewatering effect of paper pulp can be effectively improved, and the concentration of the slurry output by the spiral pulper can reach 49%.
In order to facilitate the cleaning of the telescopic shaft sleeve 94 and the helical blades 95 inside the screw conveying mechanism 9, a plurality of water filling ports, a water inlet pipeline 30 and a water outlet pipeline 31 communicated with the water filling ports are arranged on a casing 91 of the screw conveying mechanism 9, the water filling ports are arranged between a feed end 33 and a discharge end 34, a one-way valve 32 for water injection on the inner side of the casing is arranged on the water inlet pipeline 30, and a filter screen is covered on each water filling port. On one hand, the design of the water injection port can inject water into the shell 91 of the spiral conveying mechanism 9 to clean the spiral blades 95 and the telescopic shaft sleeves 94, and the telescopic shaft sleeves 94 and the spiral blades 95 which have elasticity can be cleaned by being pushed by the hydraulic pump 97, so that a better cleaning effect is achieved; on the other hand, a sealing block 98 matched with the inner diameter of the shell 91 is arranged at one end of the telescopic shaft sleeve 94 close to the hydraulic pump 97, so that black liquor in the slurry flows out along the water outlet pipeline 31 through the filter screen in the process of extruding the slurry; and the tensile in-process of telescopic shaft sleeve 94, alright utilize the inside pressure that reduces of cavity to pour into the clear water into in the casing 91 cavity, fully wash thick liquids, also can in time pour water into to inner chamber casing 91 inner chamber under the condition that thick liquids tend to become dry and harden for thick liquids resume mobility, extrude and wash thick liquids, can prevent simultaneously that dead phenomenon by the card from appearing in screw feeding mechanism 9.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (10)
1. The utility model provides a high-efficient paper pulp filter-pressing dewatering equipment, includes base, two crowded thick liquid rollers, screw delivery mechanism and locates the frame casing of base both sides, be provided with the dressing trough supporting disk on the base and drive two crowded thick liquid roller pivoted actuating mechanism, two crowded thick liquid roller level sets up in the dressing trough supporting disk, screw delivery mechanism is located the top of the extrusion district that two crowded thick liquid rollers formed, its characterized in that: extrusion bulges are uniformly distributed on the circumferential surfaces of the two squeezing rollers, and accommodating grooves for accommodating the extrusion bulges and power components for driving the extrusion bulges to stretch along the accommodating grooves are correspondingly arranged on the inner sides of the two squeezing rollers; when the extrusion protrusions are close to the extrusion area, the power assembly is used for driving the extrusion protrusions positioned in the extrusion area on the pulp extrusion rollers to extend out, and the extrusion protrusions on the two pulp extrusion rollers are mutually meshed to extrude paper pulp; when the extrusion bulge leaves the extrusion area, the power assembly drives the extrusion bulge to be stored and released along the corresponding containing groove.
2. The high efficiency pulp press filtration dewatering apparatus of claim 1, further comprising: two the crowded thick liquid roller is initiative crowded thick liquid roller and driven crowded thick liquid roller respectively, and the both ends of initiative crowded thick liquid roller and driven crowded thick liquid roller all fix on the base through the bearing frame, actuating mechanism is connected with initiative crowded thick liquid roller, driven crowded thick liquid roller is through the protruding intermeshing of extrusion on two crowded thick liquid rollers and synchronous rotation.
3. The high efficiency pulp press filtration dewatering apparatus as recited in claim 2, further comprising: the inside of initiative crowded thick liquid roller and driven crowded thick liquid roller is provided with respectively with base fixed connection's high-pressure tube, two separate through fixed partition plate and be formed with high nip and low-pressure area in the high-pressure tube, two high nip sets up along fixed partition plate near extrusion district one side relatively, it extends or receive and releases to the holding tank inboard along the holding tank outside to extrude protruding pressure drive through high nip or low-pressure area.
4. A high efficiency pulp press filtration dewatering apparatus as defined in claim 3, further comprising: the surface radian of the extrusion bulge completely contained in the containing groove is matched with the radian of the circumferential surface of the extrusion roller; the both ends of high-pressure pipe are provided with the sealed lid that is used for sealed high-pressure district and low-pressure area, sealed lid rotates with the roller of initiative crowded thick liquid roller and driven crowded thick liquid roller to be connected, power component include with the high-pressure pump of high-pressure district intercommunication and with the evacuation pump of low-pressure district intercommunication, the equal fixed mounting of high-pressure pump and vacuum pump is on the base, and the pipeline and the high-pressure district intercommunication of sealed lid are passed to the high-pressure pump, and the pipeline and the low-pressure district intercommunication of vacuum pump warp through sealed lid.
5. A high efficiency pulp press filtration dewatering apparatus as defined in claim 3, further comprising: the extrusion bulges are in a strip shape and are uniformly distributed along the central axial lines of the two extrusion rollers at equal angles, the bottom of each accommodating groove is provided with an air pressure channel extending to a corresponding high-pressure area or low-pressure area, and the high-pressure pipe is provided with a gap communicated with the air pressure channel; the thickness gap of the air pressure channel is gradually reduced along the direction close to the high-pressure pipe, an elastic part and a limiting iron ball are arranged in the air pressure channel, one end of the elastic part penetrates through the bottom of the accommodating groove to be connected with the extrusion bulge, the other end of the elastic part is connected with the limiting iron ball, and the limiting iron ball can move in the air pressure channel; and a limiting block used for limiting the extrusion protrusion to completely extend out of the accommodating groove is arranged on the inner wall of the air pressure channel.
6. A high efficiency pulp press dewatering apparatus as claimed in any one of claims 3 to 5, characterized by: the bottom that the extrusion arch is close to holding tank one side all is provided with pressure sensor, still includes the controller, the controller is connected with pressure sensor, actuating mechanism and power component respectively.
7. The efficient pulp press filtration dewatering apparatus of claim 6, further comprising: cleaning mechanisms for cleaning the two squeezing rollers are arranged on two sides of the stock tank supporting plate, each cleaning mechanism comprises a cleaning pipeline, a nozzle and a water pump connected with the cleaning pipeline, and the nozzles are connected to the tail end of the cleaning pipeline and fixed on the stock tank supporting plate; and the cleaning pipeline is provided with an electromagnetic valve, and the electromagnetic valve is connected with a controller.
8. The high efficiency pulp press filtration dewatering apparatus of claim 1, further comprising: still including setting up respectively in two the scraper of crowded thick liquid roller up end and the elastic mechanism of installing on the frame casing, the scraper includes by last scraper rod, V type link and the scraper head that connects gradually under to, the upper end of scraping the cutter rod is connected with elastic mechanism, be equipped with on the frame casing and supply the gliding slide rail from top to bottom of scraper rod, V type link one end is articulated with scraper rod lower extreme, and the corner end of V type link is articulated with the frame casing, the other end and scraper head fixed connection, scrape the scraper head all the time with the roll surface contact of crowded thick liquid roller.
9. The high efficiency pulp press filtration dewatering apparatus of claim 1, further comprising: screw conveying mechanism is the screw rod structure of variable diameter variable pitch, and screw conveying mechanism includes casing, servo motor, establishes the flexible axle sleeve in the pivot with pivot and cover that the servo motor output shaft is connected, be provided with helical blade on the flexible axle sleeve, be provided with flexible section on the flexible axle sleeve between two adjacent helical blade, be provided with the hydraulic pump with pivot synchronous rotation in the pivot of screw conveying mechanism feed end along for promote flexible axle sleeve and remove along the discharge end direction.
10. A high efficiency pulp press filter dewatering apparatus as claimed in claim 9, wherein: the water injection device is characterized in that a water injection port, a water inlet pipeline and a water outlet pipeline are arranged on the casing, the water inlet pipeline is communicated with the water injection port, a water inlet one-way valve is arranged on the water inlet pipeline, and a filter screen covers the water injection port.
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| CN110975371A (en) * | 2019-10-31 | 2020-04-10 | 张东先 | Up-flow type deep penetration pressure thickener |
| CN111018298B (en) * | 2019-12-28 | 2021-11-30 | 泗洪仁益自来水有限公司 | Use method of centrifugal sludge dewatering equipment for water conservancy sludge removal |
| CN111764073B (en) * | 2020-06-23 | 2022-12-20 | 南京秦邦吉品农业开发有限公司 | Pulp passing device for linen production for painting and calligraphy |
| CN111981953B (en) * | 2020-07-31 | 2021-11-05 | 萧云建设股份有限公司 | Depth measuring rope, construction method using depth measuring rope and pile foundation obtained through construction |
| CN115490445A (en) * | 2022-08-16 | 2022-12-20 | 聊城信源集团有限公司 | Gypsum quality optimization method based on disc dehydrator |
| CN116810954B (en) * | 2023-07-17 | 2023-12-19 | 浙江顺威新材料有限公司 | Timber heating conveying mechanism |
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| AU557547B2 (en) * | 1984-08-29 | 1986-12-24 | National Starch & Chemical Corporation | Aqueous coating for meatllised paper |
| CN88201313U (en) * | 1988-02-12 | 1988-09-07 | 宋大兴 | Wet press of paper-making machines |
| DE8810495U1 (en) * | 1988-08-19 | 1988-11-17 | J.M. Voith Gmbh, 7920 Heidenheim | Press roll for the press section of a paper machine |
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| CN203569382U (en) * | 2013-10-31 | 2014-04-30 | 东莞理文造纸厂有限公司 | Improved press roll |
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Address after: No.2, group 9, Yongping village, Xiaogu Town, Qianwei County, Leshan City, Sichuan Province Applicant after: Sichuan Fengsheng Paper Technology Co., Ltd Address before: 614405 Nine Formations of Yongping Village, Xiaogu Town, Qianwei County, Sichuan Province Applicant before: SICHUAN QIANWEI FENGSHENG PAPER LLC |
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