CN215887747U

CN215887747U - Screening sand discharging device

Info

Publication number: CN215887747U
Application number: CN202122085328.6U
Authority: CN
Inventors: 李文俊
Original assignee: Changqing Lee and Man Paper Manufacturing Co Ltd
Current assignee: Changqing Lee and Man Paper Manufacturing Co Ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-02-22
Anticipated expiration: 2031-08-31

Abstract

The utility model belongs to the technical field of papermaking processes, and particularly discloses a screening sand outlet device which comprises a box body and a driving mechanism, wherein a cylinder is arranged at the center of the box body, the middle lower part of the box body is positioned in the cylinder and is a good pulp area, the middle lower part of the box body is positioned outside the cylinder and is a residue pulp area, and the upper part of the box body is a screening area; the cylinder is provided with a filter screen, the driving mechanism is used for driving the filter screen to rotate, the part of the filter screen corresponding to the slurry area is a folded plate, and the folded plate can be folded downwards under the action of gravity; the improved slurry screening device is characterized in that a slurry inlet pipeline communicated with the screening area is connected to the upper end of the box body, a slurry outlet is formed in the good slurry area, a slag outlet is formed in the slag slurry area, and an air booster pump is arranged in the screening area. Compared with the prior art, the device can separate good pulp at one time, thoroughly separate pulp, and has simple process flow and convenient operation.

Description

Screening sand discharging device

Technical Field

The utility model belongs to the technical field of papermaking processes, and particularly discloses a screening and sand-producing device.

Background

At present, the equipment for screening paper pulp is mainly a pressure screen, and the paper pulp screened by the pressure screen enters a desander for sand production. When the prior art is used for sand discharging, paper pulp enters a barrel of a sand remover along the tangential direction through certain pressure, the paper pulp is made to flow downwards in a vortex-shaped vortex mode under the action of centrifugal force and the influence of vortex motion, namely, the paper pulp is made to flow downwards, and in the flow descending process, gravel and impurities with large specific gravity in the paper pulp are thrown to the barrel wall of the sand remover under the action of the centrifugal force and are settled at the bottom of the sand remover under the action of self gravity. In this way, the slurry is only separated once, which is difficult to separate completely, thus causing resource waste; and meanwhile, the pressure screen and the sand remover are adopted to screen the slurry to produce sand, so that more equipment is used in the process flow, and the operation is complicated.

Disclosure of Invention

The utility model aims to provide a screening and sand producing device, which aims to solve the problems that the existing equipment is incomplete in separation and complex in operation when used for screening and producing sand from slurry.

In order to achieve the purpose, the basic scheme of the utility model is as follows: a screening sand outlet device comprises a box body and a driving mechanism, wherein a cylinder is arranged at the center of the box body, a good pulp area is arranged at the middle lower part of the box body in the cylinder, a residue pulp area is arranged at the middle lower part of the box body outside the cylinder, and a screening area is arranged at the upper part of the box body; the cylinder is provided with a filter screen, the driving mechanism is used for driving the filter screen to rotate, the part of the filter screen corresponding to the slurry area is a folded plate, and the folded plate can be folded downwards under the action of gravity; the improved slurry screening device is characterized in that a slurry inlet pipeline communicated with the screening area is connected to the upper end of the box body, a slurry outlet is formed in the good slurry area, a slag outlet is formed in the slag slurry area, and an air booster pump is arranged in the screening area.

The working principle of the basic scheme is as follows: the device can be used for screening and sanding the slurry, firstly, the driving mechanism is started to drive the filter screen to rotate, and the folded plate can be horizontally unfolded under the centrifugal action; at the moment, the slurry is introduced into the screening area in the box body through the slurry inlet pipeline, the filter sieve rotates to carry out centrifugal separation on the slurry, and gravel and impurities are thrown to the edge of the filter sieve under the action of centrifugal force. After the filter sieve rotates for a period of time, the air booster pump is started to boost the screening area, and the good pulp which is centrifuged by the filter sieve can enter the good pulp area through the filter sieve under the action of pressure. After the slurry is separated, the filter sieve is stopped to rotate through the driving mechanism, and the folded plate is folded downwards under the action of gravity, so that gravel and impurities at the edge of the filter sieve and slag slurry with higher concentration can fall into the slag slurry area. The good pulp can be collected through the grout outlet of the good pulp area, and the slag pulp containing oil impurities and gravel can be collected through the slag outlet of the slag pulp area.

The beneficial effect of this basic scheme lies in:

1. centrifugal filtration, screening, slagging tap can be accomplished to this device, and centrifugal action through the filter sieve and the pressure boost effect of air booster pump can let and filter going on smoothly, and effectively separate out the good thick liquid.

2. The device can complete the screening and slag tapping of the slurry in the box body, and the equipment used in the whole process is only one, so that the operation is simple and convenient.

3. The device can obtain good pulp in a screening process through the dual functions of centrifugation and filtration of the filter sieve, and can thoroughly separate pulp.

Compared with the prior art, the device can separate good pulp at one time, thoroughly separate pulp, and has simple process flow and convenient operation.

Further, the driving mechanism comprises a support plate and a motor, the motor is fixed on the support plate, and an output shaft of the motor is fixedly connected with the center of the filter screen.

The motor drives the filter sieve to rotate, so that the centrifugal action of the filter sieve on the slurry can be guaranteed.

Further, be equipped with the annular in the box, filter sieve edge is equipped with the traveller with annular sliding connection.

The annular groove is matched with the sliding column, so that the rotation process of the filter screen is better, smooth and stable.

Further, the folded plate is a plurality of, and the numbers of the sliding columns and the folded plates are the same.

The rotation process of the filter screen can be more stable, and the slag slurry can enter the slag slurry area more smoothly.

Furthermore, the folded plates are connected with the filter screen through hinges, and the number of the folded plates and the number of the sliding columns are four.

The filter screen is easier to manufacture and install and has simple structure on the premise of keeping stable rotation.

Furthermore, a backflow pipeline is arranged outside the box body, one end of the backflow pipeline is connected with the middle of the slag slurry area, and the other end of the backflow pipeline is communicated with the slurry inlet pipeline.

The slag slurry after the sediment in the slag slurry area can enter the device again for screening and slag discharging, and the slurry is separated for a plurality of times, so that the slurry is more thoroughly separated.

Drawings

FIG. 1 is a schematic view of an embodiment of a sand screen apparatus of the present invention;

fig. 2 is a cross-sectional view at a-a in fig. 1.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a box body 10, a cylinder 11, a good pulp area 12, a pulp outlet 121, a slag pulp area 13, a return pipeline 131, a slag outlet 132, a screening area 14, a pulp inlet pipeline 15, an air booster pump 16, a motor 20, a support plate 21, a filter screen 22, a folded plate 23, a hinge 231, an annular groove 24 and a sliding column 25.

As shown in fig. 1 and 2, the screening sand discharging device comprises a box body 10 and a driving mechanism, wherein a box cover is detachably arranged on the upper portion of the box body 10, the box cover is connected with a slurry inlet pipeline 15 communicated with a screening area 14, and a pump is arranged on the slurry inlet pipeline 15 in order to enable slurry to smoothly flow into the box body 10. A cylinder 11 is arranged at the center of the box body 10, a good pulp area 12 is arranged in the cylinder 11 at the middle lower part of the box body 10, a residue pulp area 13 is arranged outside the cylinder 11 at the middle lower part of the box body 10, and a screening area 14 is arranged at the upper part of the box body 10; the accept zone 12 is provided with a slurry outlet 121, the reject zone 13 is provided with a slag outlet 132, and the screening zone 14 is provided with an air booster pump 16. A backflow pipeline 131 is arranged outside the box body 10, one end of the backflow pipeline 131 is connected with the middle of the slag slurry area 13, and the other end of the backflow pipeline 131 is communicated with the slurry inlet pipeline 15.

The cylinder 11 is provided with a filter screen 22, the filter screen 22 is provided with filter holes for filtering gravel and impurities, the box body 10 is internally provided with a ring groove 24, and the edge of the filter screen 22 is provided with a sliding column 25 which is in sliding connection with the ring groove 24. The filter sieve 22 is provided with a folded plate 23 at the part corresponding to the pulp area 13, the folded plate 23 is connected with the filter sieve 22 through a hinge 231, the folded plate 23 can be folded downwards under the action of gravity, the folded plate 23 and the filter form a filter disc under the centrifugal action of the filter sieve 22, namely, the folded plate 23 is horizontally unfolded under the centrifugal action of the rotation of the filter sieve 22. The number of the folded plates 23 is multiple, the number of the slide columns 25 is the same as that of the folded plates 23, the number of the folded plates 23 is four, and one folded plate 23 is arranged between two adjacent slide columns 25. The driving mechanism is used for driving the filter screen 22 to rotate, and in this embodiment, the driving mechanism includes a motor 20 and a support plate 21, the support plate 21 is fixed on the inner wall of the cylinder 11, the motor 20 is fixed on the support plate 21, and an output shaft of the motor 20 is fixedly connected with the center of the filter screen 22.

The specific implementation process is as follows: the device can be used for screening and producing sand for slurry, the driving mechanism is started to drive the filter sieve 22 to rotate, and the folded plate 23 can be horizontally unfolded under the centrifugal action to form the disc-shaped filter sieve 22; at this point the slurry is passed through the slurry inlet conduit 15 into the screening zone 14 within the housing 10 and the rotation of the filter screen 22 will centrifuge the slurry and, under the influence of the centrifugal force, the grit and impurities will be thrown towards the edges of the filter screen 22. After the filter screen 22 has been rotated for a period of time, the air booster pump 16 is activated to boost the screening region 14, and the accepts that have been centrifuged by the filter screen 22 may be forced through the filter screen 22 into the accepts region 12. After the slurry is separated, the rotation of the filter screen 22 is stopped by the driving mechanism, and the folded plate 23 is folded downwards under the action of gravity, so that gravel and impurities at the edge of the filter screen 22 and slurry with higher concentration can enter the slurry area 13 through the folded plate. The good pulp can be collected through the grout outlet 121 of the good pulp area 12, the slag pulp can enter the box body 10 again through the return pipeline 131 for centrifugal screening after being precipitated in the slag pulp area 13, and finally the slag pulp containing oil impurities and gravel can be collected through the slag outlet 132 of the slag pulp area 13.

The foregoing is merely an example of the present invention and common general knowledge in the art of designing and/or characterizing particular aspects and/or features is not described in any greater detail herein. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several variations and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The utility model provides a screening sand device which characterized in that: the device comprises a box body and a driving mechanism, wherein a cylinder is arranged at the center of the box body, a good pulp area is arranged in the cylinder at the middle lower part of the box body, a residue pulp area is arranged outside the cylinder at the middle lower part of the box body, and a screening area is arranged at the upper part of the box body; the cylinder is provided with a filter screen, the driving mechanism is used for driving the filter screen to rotate, the part of the filter screen corresponding to the slurry area is a folded plate, and the folded plate can be folded downwards under the action of gravity; the improved slurry screening device is characterized in that a slurry inlet pipeline communicated with the screening area is connected to the upper end of the box body, a slurry outlet is formed in the good slurry area, a slag outlet is formed in the slag slurry area, and an air booster pump is arranged in the screening area.

2. The sand screening device of claim 1, wherein the drive mechanism comprises a support plate and a motor, the motor is fixed on the support plate, and an output shaft of the motor is fixedly connected with the center of the filter screen.

3. The sand screening device as claimed in claim 2, wherein a ring groove is formed in the box body, and a sliding column slidably connected with the ring groove is arranged at the edge of the filter screen.

4. A sand screen as claimed in claim 3, wherein the flaps are plural and the number of said posts and flaps is the same.

5. The sand screening device of claim 4, wherein the four flaps and the four sliding columns are hinged to the filter screen.

6. The sand screening device according to claim 5, wherein a return pipe is arranged outside the box body, one end of the return pipe is connected with the middle part of the slurry area, and the other end of the return pipe is communicated with the slurry inlet pipe.