CN219326957U

CN219326957U - Pressure screen for papermaking pulp

Info

Publication number: CN219326957U
Application number: CN202320858559.2U
Authority: CN
Inventors: 陈树伟
Original assignee: Chongqing Fengkai Paper Products Co ltd
Current assignee: Chongqing Fengkai Paper Products Co ltd
Priority date: 2023-04-18
Filing date: 2023-04-18
Publication date: 2023-07-11
Anticipated expiration: 2033-04-18

Abstract

The utility model discloses a pressure screen for papermaking pulp, which comprises a support frame, wherein a tank body is arranged at the top of the support frame, a first screen cylinder is arranged in the tank body, a second screen cylinder is arranged in the first screen cylinder, a first discharge pipe is connected to the middle position of the bottom end of the tank body in a penetrating way, and a feed pipe is inserted into one side of the top end of the first screen cylinder. Through being provided with spiral bin outlet mechanism in the inside of first row material pipe, carry out the coarse impurity that first filtering screen process was removed through the second screen bowl when using and fall to first row material pipe inside, simultaneously start first driving motor drive screw conveying axle clockwise rotation, evenly quick downwardly directed and through coarse fodder export discharge equipment of coarse fodder that will screen off and import in the first row material pipe through screw conveying axle, thereby the coarse impurity that effectually prevents to screen off blocks up row material pipeline, ensure that the pressure screen carries out continuous stable screening filtration operation to papermaking paper pulp.

Description

Pressure screen for papermaking pulp

Technical Field

The utility model relates to the technical field of papermaking, in particular to a pressure screen for papermaking pulp.

Background

In the paper making process, plant fibers are smashed and processed into paper pulp, and the quality of the paper pulp directly determines the quality of the paper, so that the paper pulp for paper making is required to be screened by a pressure screen to filter out coarse impurities contained in the paper pulp, the quality of the paper pulp is improved, and the quality of paper making is improved;

the utility model discloses a pressure screen for papermaking pulp, which is disclosed by the utility model with an authorized publication number of CN218521522U and comprises a tank body, wherein a discharge pipe I is arranged on the left side of the bottom of the tank body, a feed pipe is arranged on the left side of the top of the tank body, a screen cylinder I is arranged on the inner wall of the tank body through a connecting seat, a discharge pipe II is arranged on the bottom of the screen cylinder I, the bottom of the discharge pipe II extends out of the tank body, a motor is detachably arranged on the right side of the top of the tank body, a belt pulley I is arranged at the output end of the motor, a rotating rod is rotatably connected with the middle part of the top of the tank body through a bearing, a belt pulley II is arranged at the top of the rotating rod, a belt is connected with the outer wall of the belt pulley I and the outer wall of the belt pulley II in a matched manner, and the bottom of the rotating rod extends into the screen cylinder I. The device can be effectual carries out filtering operation to paper pulp, through setting up multiple filter equipment, filters more thoroughly, and filter effect is more ideal, improves the filterable efficiency to paper pulp, accords with actual use demand more. However, the technical scheme is that coarse impurities screened out in the application process pass through a pipeline discharge device, and pipelines are easily blocked in the process of discharging the coarse impurities, so that the technical problem that the screened coarse impurities cannot be effectively discharged to prevent the pipeline from being blocked exists.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides the pressure screen for papermaking pulp, which can solve the technical problems that the screened crude impurities are easy to block a pipeline in the process of discharging the crude impurities through a pipeline discharging device, and the screened crude impurities cannot be effectively discharged to prevent the pipeline.

In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a pressure screen for papermaking paper pulp, includes the support frame, the top of support frame is provided with the jar body, the inside of jar body is provided with first screen cylinder, the inside of first screen cylinder is provided with the second screen cylinder, the intermediate position department cross-under of jar body bottom has first row material pipe, one side grafting on first screen cylinder top has the inlet pipe, the opposite side on jar body top is provided with second driving motor, second driving motor's output is provided with the drive shaft, the top between the inside both sides of second screen cylinder is provided with the link, the intermediate position department swing joint on jar inside top has the transmission shaft, be provided with belt pulley assembly between the bottom of drive shaft and the outside top of transmission shaft, one side grafting of jar body bottom has the second to arrange the material pipe, one side grafting of first screen cylinder bottom has the third to arrange the material pipe, the inside of first row material pipe is provided with spiral discharge mechanism, the both ends on both sides are provided with clearance structure between first screen cylinder and the second screen cylinder.

As a preferable technical scheme of the utility model, the spiral discharging mechanism comprises a spiral conveying shaft, the spiral conveying shaft is arranged in the first discharging pipe, a first driving motor is arranged at the bottom end of the first discharging pipe, and coarse material outlets are respectively arranged at the bottom ends of two sides of the interior of the first discharging pipe.

As an optimized technical scheme of the utility model, the cleaning structure comprises first cleaning scrapers which are respectively arranged at the top ends of two sides of the interior of the first screen cylinder, the top parts of two sides of the second screen cylinder are respectively and fixedly connected with first connecting vertical plates, the bottom ends of two sides of the second screen cylinder are respectively and fixedly connected with second connecting vertical plates, and one side of each second connecting vertical plate is respectively provided with a second cleaning scraper.

As a preferable technical scheme of the utility model, the bottom end of the transmission shaft penetrates through the middle position of the top end of the first screen cylinder and the top of the connecting frame to be fixedly connected, the bottom of the feeding pipe penetrates through one side of the top of the first screen cylinder and extends into the second screen cylinder, the top end of the first discharge pipe penetrates through the bottom end of the first screen cylinder and the bottom end of the second screen cylinder to be movably connected, the first discharge pipe is communicated with the second screen cylinder, and the bottom end of the third discharge pipe penetrates through the other side of the bottom end of the tank body.

As a preferable technical scheme of the utility model, the bottom end of the spiral conveying shaft penetrates through the bottom end of the first discharge pipe and is fixedly connected with the output end of the first driving motor, and the top end of the spiral conveying shaft extends to the inside of the second screen cylinder.

As a preferable technical scheme of the utility model, the first cleaning scraping plate and the second cleaning scraping plate are respectively arc-shaped, and one side of the first connecting vertical plate is respectively fixedly connected with the middle position of the inner side of the first cleaning scraping plate.

Compared with the prior art, the utility model has the following beneficial effects:

1. the spiral discharging mechanism is arranged in the first discharging pipe, coarse impurities screened by the first filtering screening process through the second screening cylinder fall into the first discharging pipe when the filter press is used, meanwhile, the first driving motor is started to drive the spiral conveying shaft to rotate clockwise, coarse materials screened and guided into the first discharging pipe are uniformly and rapidly conveyed downwards through the spiral conveying shaft and discharged out of the device through the coarse material outlet, so that the screened coarse impurities are effectively prevented from blocking the discharging pipe, continuous and stable screening and filtering operation of the pressure screen on paper pulp is ensured, and the operability is strong;

2. through being provided with the clearance structure at the both ends of both sides between first screen drum and second screen drum, through first connection riser and second connection riser respectively with first clearance scraper blade and second clearance scraper blade fixed connection in the outside of second screen drum when using to laminate first clearance scraper blade and second clearance scraper blade and the inside lateral wall of first screen drum, the pressure sieve rotates when the operation is filtered the paper pulp and drives first clearance scraper blade and second clearance scraper blade and rotate the impurity of adhesion at the inside lateral wall of first screen drum when filtering, thereby prevent to remove impurity jam first screen drum mesh when filtering and influence the normal screening operation of pressure sieve, the practicality is strong.

Drawings

FIG. 1 is a schematic cross-sectional elevation view of the present utility model;

FIG. 2 is a schematic view of a front partial cross-sectional structure of a first discharge pipe according to the present utility model;

FIG. 3 is an enlarged schematic view of the structure of FIG. 1A according to the present utility model;

fig. 4 is a schematic top view partially in cross-section of a second screen cylinder according to the utility model.

Wherein: 1. a support frame; 2. a first driving motor; 3. a first discharge pipe; 4. a second discharge pipe; 5. a tank body; 6. a first screen drum; 7. a second screen drum; 8. a first cleaning blade; 9. a feed pipe; 10. a pulley assembly; 11. a connecting frame; 12. a transmission shaft; 13. a second driving motor; 14. a drive shaft; 15. a first connecting riser; 16. a second cleaning blade; 17. a screw conveying shaft; 18. a third discharge pipe; 19. a coarse material outlet; 20. and a second connecting riser.

Detailed Description

In order that the manner in which the above recited features, objects and advantages of the present utility model are obtained will become readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the utility model. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents, etc. used in the following examples are commercially available unless otherwise specified.

Examples

Referring to fig. 1-4, the utility model provides a pressure screen for papermaking pulp, comprising a supporting frame 1, a tank 5 is arranged at the top of the supporting frame 1, a first screen drum 6 is arranged in the tank 5, a second screen drum 7 is arranged in the first screen drum 6, a first discharge pipe 3 is connected in a penetrating way at the middle position of the bottom end of the tank 5, the top end of the first discharge pipe 3 penetrates through the bottom end of the first screen drum 6 and the bottom end of the second screen drum 7 to be movably connected, the first discharge pipe 3 is communicated with the second screen drum 7, a feed pipe 9 is inserted at one side of the top end of the first screen drum 6, the bottom of the feed pipe 9 penetrates through one side of the top of the first screen drum 6 and extends to the inside of the second screen drum 7, the other side of the top end of the tank body 5 is provided with a second driving motor 13, the output end of the second driving motor 13 is provided with a driving shaft 14, the top end between two sides of the inside of the second screen drum 7 is provided with a connecting frame 11, the middle position of the top end of the inside of the tank body 5 is movably connected with a transmission shaft 12, the bottom end of the transmission shaft 12 penetrates through the top end of the first screen drum 6 and the middle position of the top of the connecting frame 11 to be fixedly connected, a belt pulley assembly 10 is arranged between the bottom end of the driving shaft 14 and the top end of the outside of the transmission shaft 12, one side of the bottom end of the tank body 5 is spliced with a second discharge pipe 4, one side of the bottom end of the first screen drum 6 is spliced with a third discharge pipe 18, and the bottom end of the third discharge pipe 18 penetrates through the other side of the bottom end of the tank body 5;

as a further implementation manner of this embodiment, as shown in fig. 1 and 2, a spiral discharging mechanism is disposed in the first discharging pipe 3, the spiral discharging mechanism includes a spiral conveying shaft 17, the spiral conveying shaft 17 is disposed in the first discharging pipe 3, a first driving motor 2 is disposed at the bottom end of the first discharging pipe 3, the bottom end of the spiral conveying shaft 17 penetrates through the bottom end of the first discharging pipe 3 and the output end of the first driving motor 2 to be fixedly connected, the top end of the spiral conveying shaft 17 extends to the inside of the second screen drum 7, the screened coarse impurities can be conveyed and discharged downwards through the spiral conveying shaft 17 uniformly and rapidly, coarse material outlets 19 are disposed at the bottom ends of two sides of the inside of the first discharging pipe 3 respectively, so that the screened coarse impurities are effectively prevented from blocking the discharging pipe, continuous and stable screening and filtering operation of the paper pulp by the pressure screen is ensured, and the operability is strong;

when the coarse fodder discharging device is used, the first driving motor 2 is started to drive the spiral conveying shaft 17 to rotate clockwise, coarse fodder which is sieved out and guided into the first discharging pipe 3 is uniformly and quickly conveyed downwards through the spiral conveying shaft 17 and discharged out of the device through the coarse fodder outlet 19;

as a further implementation manner of this embodiment, as shown in fig. 1, 3 and 4, cleaning structures are disposed at two ends of two sides between the first screen drum 6 and the second screen drum 7, the cleaning structures include arc-shaped first cleaning blades 8, the first cleaning blades 8 are respectively disposed at top ends of two sides inside the first screen drum 6, the tops of two sides of the second screen drum 7 are respectively and fixedly connected with first connecting risers 15, one side of each first connecting riser 15 is respectively and fixedly connected with a middle position inside the first cleaning blade 8, bottom ends of two sides of the second screen drum 7 are respectively and fixedly connected with second connecting risers 20, one side of each second connecting riser 20 is respectively provided with arc-shaped second cleaning blades 16, and impurities adhered to inner side walls of the first screen drum 6 during filtering are scraped by rotation of the first cleaning blades 8 and the second cleaning blades 16 during operation, so that the normal screen removing operation of the pressure screen is prevented from being influenced by the first screen drum 6 due to blockage of impurities during screen removing and filtering, and the feasibility is strong;

when the pulp screening device is used, the first cleaning scraping plate 8 and the second cleaning scraping plate 16 are respectively and fixedly connected to the outside of the second screen drum 7 through the first connecting vertical plate 15 and the second connecting vertical plate 20, the first cleaning scraping plate 8 and the second cleaning scraping plate 16 are attached to the inner side wall of the first screen drum 6, and when the pressure screen is operated to screen and filter pulp, the second screen drum 7 rotates to drive the first cleaning scraping plate 8 and the second cleaning scraping plate 16 to rotate so as to scrape impurities adhered to the inner side wall of the first screen drum 6 during filtering;

the specific working principle is as follows:

when the pressure screen is used, firstly, pulp to be screened is guided into the second screen drum 7 through the feeding pipe 9, meanwhile, the second driving motor 13 is started to drive the driving shaft 14 to rotate and drive the transmission shaft 12 to rotate through the belt pulley assembly 10, so that the second screen drum 7 is driven to rotate through the connecting frame 11 to carry out a first screening program on the pulp, coarse impurities screened out in the first filtering screen removing process through the second screen drum 7 fall into the first discharging pipe 3, meanwhile, the first driving motor 2 is started to drive the spiral conveying shaft 17 to rotate clockwise, coarse materials screened out and guided into the first discharging pipe 3 are conveyed downwards uniformly and quickly through the spiral conveying shaft 17 and discharged out of the device through the coarse material outlet 19 to prevent blockage, and the pulp screened out through the second screen drum 7 is driven to pass through the first screen drum 6 to carry out a second screening program, finer impurities screened out through the second screening program are discharged through the third discharging pipe 18, the second screen drum 7 is driven to rotate to drive the first cleaning scraper 8 and the second cleaning scraper 16 to rotate to adhere to the inner side wall of the first screen drum 6 when the first cleaning scraper is driven to rotate, and then the pulp is discharged through the first screening pipe 4 to ensure that the filtering screen is discharged through the first screening pipe 4.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a pressure screen for papermaking pulp, includes support frame (1), its characterized in that: the top of support frame (1) is provided with jar body (5), the inside of jar body (5) is provided with first screen cylinder (6), the inside of first screen cylinder (6) is provided with second screen cylinder (7), the intermediate position department cross-under of jar body (5) bottom has first row material pipe (3), peg graft in one side on first screen cylinder (6) top has inlet pipe (9), the opposite side on jar body (5) top is provided with second driving motor (13), the output of second driving motor (13) is provided with driving shaft (14), the top between the inside both sides of second screen cylinder (7) is provided with link (11), the intermediate position department swing joint on the inside top of jar body (5) has transmission shaft (12), be provided with belt pulley assembly (10) between the top of driving shaft (14) and transmission shaft (12) outside, peg graft in one side on jar body (5) bottom has second row material pipe (4), one side on first screen cylinder (6) bottom is provided with third row material pipe (18), peg graft in one side of first screen cylinder (6) and be provided with spiral material pipe (3) between the both ends of first screen cylinder (7).

2. A pressure screen for papermaking pulp as set forth in claim 1, wherein: the spiral discharging mechanism comprises a spiral conveying shaft (17), the spiral conveying shaft (17) is arranged in the first discharging pipe (3), a first driving motor (2) is arranged at the bottom end of the first discharging pipe (3), and coarse material outlets (19) are respectively arranged at the bottom ends of two sides of the inside of the first discharging pipe (3).

3. A pressure screen for papermaking pulp as set forth in claim 1, wherein: the cleaning structure comprises a first cleaning scraping plate (8), the first cleaning scraping plate (8) is respectively arranged at the top ends of two sides of the interior of a first screen drum (6), the top parts of two sides of a second screen drum (7) are respectively fixedly connected with a first connecting vertical plate (15), the bottom ends of two sides of the second screen drum (7) are respectively fixedly connected with a second connecting vertical plate (20), and one side of each second connecting vertical plate (20) is respectively provided with a second cleaning scraping plate (16).

4. A pressure screen for papermaking pulp as set forth in claim 1, wherein: the bottom of transmission shaft (12) runs through the intermediate position department fixed connection at the top of first screen (6) and link (11) top, the bottom of inlet pipe (9) runs through one side at first screen (6) top and extends to the inside of second screen (7), the bottom of first screen (6) and the bottom swing joint of second screen (7) are run through on the top of first row material pipe (3), and first row material pipe (3) and second screen (7) are linked together, the opposite side of jar body (5) bottom is run through to the bottom of third row material pipe (18).

5. A pressure screen for papermaking pulp as set forth in claim 2, wherein: the bottom end of the spiral conveying shaft (17) penetrates through the bottom end of the first discharge pipe (3) and the output end of the first driving motor (2) to be fixedly connected, and the top end of the spiral conveying shaft (17) extends to the inside of the second screen drum (7).

6. A pressure screen for papermaking pulp as set forth in claim 3, wherein: the first cleaning scraping plate (8) and the second cleaning scraping plate (16) are respectively arc-shaped, and one side of the first connecting vertical plate (15) is fixedly connected with the middle position of the inner side of the first cleaning scraping plate (8) respectively.