CN214992664U - Combined type pressure screen - Google Patents
Combined type pressure screen Download PDFInfo
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- CN214992664U CN214992664U CN202022933633.1U CN202022933633U CN214992664U CN 214992664 U CN214992664 U CN 214992664U CN 202022933633 U CN202022933633 U CN 202022933633U CN 214992664 U CN214992664 U CN 214992664U
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Abstract
The utility model provides a combined type pressure sieve, including the upper cover that sets up on screen frame and the screen frame, advance thick liquid pipe, good thick liquid pipe, heavy sediment replenishment room, the coaxial transmission support that sets up in the screen frame bottom, the coaxial rotor that sets up in transmission support upper portion, the rotor that the internal flow formula screen cylinder and transmission support periphery of rotor below set up forms first screening area, the rotor top the external flow formula screen cylinder forms the second screening area with the rotor that is fixed in screen frame upper portion, the external flow formula screen cylinder that links to each other with the screen frame extends the section of thick bamboo outside with the rotor and forms the third screening area, and the thick liquid gets into the third screening area again after good thick liquid pipeline gets into the third screening area or gets into the second screening area from the light sediment passageway from first screening area. The utility model has the advantages that: the method is suitable for replacing a multi-section and multi-stage traditional screening process, has the advantages of simple screening process, various screening forms, high screening efficiency, strong pulp adaptability and small fiber loss, simplifies the process of a papermaking and pulping screening section, and effectively reduces the equipment investment of papermaking manufacturers.
Description
Technical Field
The utility model relates to a pressurized screen technical field, concretely relates to combined type pressurized screen suitable for replace multistage, multistage traditional screening technology.
Background
At present, the pressure screen is used as the most widely used screening equipment in the pulping line of the domestic paper making industry, the technology of the pressure screen is mature day by day, domestic manufacturers gradually transition to technical innovation from the initial technology introduction, and the pressure screen is adjusted from all aspects to be more suitable for domestic paper making enterprises.
Because the impurity components in the paper pulp for pulping and papermaking by waste paper are complex, the traditional pressure screen has a single screening form and can only screen specific pulp meeting the requirements, the existing screening process usually needs to be provided with a multi-section and multi-stage coarse and fine screening system, the process is complex, the equipment types are multiple, the occupied space of a factory building is large, a pipeline system between equipment is complex, and the overall investment is huge.
Disclosure of Invention
The utility model aims at providing a screening flow is simple, the screening form is various, the screening efficiency is high, thick liquids strong adaptability, the little combined type pressure screen of fibre loss.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:
a composite pressure screen comprises a screen body, an upper cover, a pulp inlet pipe, a fine pulp pipe and a heavy slag collecting chamber which are arranged on the screen body, wherein a transmission bracket is coaxially arranged at the bottom in the screen body, a rotor is coaxially arranged at the upper part of the transmission bracket,
the inward-flow type screen cylinder below the rotor and the rotor wing arranged on the periphery of the transmission bracket form a first screening area, the outward-flow type screen cylinder above the rotor and the rotor wing fixed on the upper part of the screen body form a second screening area, and the outward-flow type screen cylinder connected with the screen body and the extending cylinder wall outside the rotor form a third screening area;
a pulp inlet chamber is arranged between the lower part of the first screening area and the screen body, the second screening area is positioned at the upper side of the first screening area, the third screening area is positioned at the outer side of the first screening area, and the pulp enters the third screening area from the first screening area through a good pulp pipeline or enters the second screening area from a light slag channel and then enters the third screening area;
heavy slag which does not pass through the screen cylinder of the first screening area enters the heavy slag complementary collection chamber at the bottom of the screen body under the action of centrifugal force and gravity, light slag which does not pass through the screen cylinder of the second screening area is discharged through the light slag port arranged on the upper cover, good pulp which passes through the screen cylinder of the third screening area is discharged through the good pulp pipe, and tail pulp which does not pass through the screen cylinder of the third screening area enters the tail pulp chamber through the pumping mechanism.
Furthermore, a dilution water pipe is arranged in the rotating bracket, and dilution water enters between the rotor and the transmission bracket through the dilution water pipe and continuously flows upwards through a dilution water channel in the rotor to enter a dilution turntable of a second screening area; an upper cover static disc is also arranged in the second screening area, the upper cover static disc is connected with the upper cover through a pair of connecting plates, and water holes are formed in the connecting plates; the diluting rotary disc is provided with a plurality of blades with holes, the diluting rotary disc and the upper cover static disc do relative motion to untwist and dilute the light slag, and dilution water enters the light slag port light slag gathering part through water holes and is sprayed to two sides to wash the light slag.
Furthermore, a movable flange arranged at the lower part of the first screening area screen cylinder and a static flange connected with the lower part of the transmission support form a movable seal, a movable flange arranged at the upper part of the second screening area screen cylinder and a static flange connected with the upper cover form a movable seal, and a movable ring arranged at the lower part of the extension cylinder wall at the outer side of the third screening area rotor and a static ring connected with the screen body form a movable seal.
Compared with the prior art, the utility model, have following advantage:
the utility model relates to a combined type pressurized screen is applicable to and replaces multistage, multistage traditional screening process, has that the screening flow is simple, the screening form is various, the screening efficiency is high, thick liquids strong adaptability, the little advantage of fibre loss, has simplified the flow of papermaking pulping screening workshop section, has effectively reduced papermaking producer's equipment investment.
Drawings
Fig. 1 is a schematic view of the internal structure of the composite pressure screen of the present invention.
Detailed Description
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1, the composite pressure screen comprises a screen body 1 and an upper cover 2, a pulp inlet pipe 3, a fine pulp pipe 4 and a heavy slag collecting chamber 5 which are arranged on the screen body 1, wherein a transmission bracket 6 is coaxially arranged at the bottom in the screen body 1, a rotor 7 is coaxially arranged at the upper part of the transmission bracket 6, and a mechanical seal is arranged between the transmission bracket 6 and the rotor 7.
The internal flow type screen cylinder I8 below the rotor 7 and the rotor wing I9 arranged on the periphery of the transmission bracket 6 form a first screening area 10, the external flow type screen cylinder II 11 above the rotor 7 and the rotor wing II 12 fixed on the upper part of the screen body 1 form a second screening area 13, and the external flow type screen cylinder III 14 connected with the screen body 1 and the outer side extending cylinder wall of the rotor 7 form a third screening area 15. The first screening area 10 is a coarse screening area, the second screening area 13 is a light slag screening area, and the third screening area 15 is a fine screening area. Set up screen cylinder and rotor cooperation for near screen cylinder thick liquid stream department forms positive negative pulse, and positive pulse is big and short and short, and the undershoot is little and mild, and positive pulse is greater than the undershoot, and positive pulse makes the thick liquid pass through fast, and the negative pulse reverse suction avoids thick liquids to block up the screen cylinder.
A pulp inlet chamber 16 is arranged between the lower part of the first screening area 10 and the screen body 1, the second screening area 13 is positioned at the upper side of the first screening area 10, the third screening area 15 is positioned at the outer side of the first screening area 10, and the pulp enters the third screening area 15 from the first screening area 10 through a good pulp pipeline 17 or enters the second screening area 13 from a light slag channel 18 and then enters the third screening area 15.
Heavy slag which does not pass through the first screen cylinder 8 of the first screen area 10 enters the heavy slag collecting chamber 5 at the bottom of the screen body 1 under the action of centrifugal force and gravity, light slag which does not pass through the second screen cylinder 11 of the second screen area 13 is discharged through the light slag port 25 arranged on the upper cover 2, good pulp which passes through the third screen cylinder 14 of the third screen area 15 is discharged through the good pulp pipe 4, and tail pulp which does not pass through the third screen cylinder 14 of the third screen area 15 enters the tail pulp chamber 19 through the pumping mechanism. Specifically, a plurality of light slag channels 20 which are uniformly distributed on the circumference are arranged in the rotor 7 and are used for connecting the outside of the first screening area 10 and the inside of the second screening area 13; a plurality of accept pulp channels 21 which are uniformly distributed on the circumference are arranged in the rotor 7 and are used for connecting the inside of the first screening area 10 and the third screening area 15; a plurality of dilution water channels 22 are uniformly distributed on the circumference in the rotor 7 and are used for connecting the upper part of the transmission bracket 6 with a dilution turntable 23 on the upper part of the rotor 7.
Furthermore, a dilution water pipe 20 is arranged in the rotating bracket 6, dilution water enters between the rotor 7 and the transmission bracket 6 through the dilution water pipe 20, and a dynamic seal formed between a dynamic ring four 24 fixed on the rotor 7 and the transmission bracket 6 ensures that the dilution water continuously flows upwards through a dilution water channel 22 in the rotor 7 and enters a dilution rotary table 23 in the second screening area 13; an upper cover static disc 27 is also arranged in the second screening area, the upper cover static disc 27 is connected with the upper cover 2 through a pair of connecting plates 28, and water holes are formed in the connecting plates 28; the diluting rotary disc 23 is provided with a plurality of blades with holes, the diluting rotary disc 23 and the upper cover static disc 27 do relative motion to untwist and dilute the light slag, and dilution water enters the light slag port 25 and gathers the light slag through water holes and sprays the light slag to two sides to wash the light slag.
Further, a dynamic flange I29 arranged at the lower part of the screen cylinder I8 of the first screening area 10 and a static flange I30 connected with the lower part of the transmission bracket 6 form dynamic sealing, so that the pulp which is not screened cannot directly enter the inside of the screen cylinder I8. And a second movable flange 31 arranged at the upper part of the second screen cylinder 11 of the second screening area 13 and a second static flange 32 connected with the upper cover 2 form a movable seal, so that light slag at the position cannot directly enter the outside of the second screen cylinder 11. And a third moving ring 33 arranged at the lower part of the outer extended cylinder wall of the rotor 7 of the third screening area 15 forms a moving seal with a third stationary ring 34 connected with the screen body 1, so that the unscreened pulp cannot enter the tail pulp chamber 19 and the third screening area 15.
The utility model relates to a theory of operation of combined type pressurized screen as follows:
slurry enters the bottom of the screen body 1 along the tangent line of the slurry inlet pipe 3, rotates and rises to the outer side of a first screen cylinder 8 of a first screening area 10 (a coarse screening area), qualified fine slurry enters the inside of the first screen cylinder 8 under the action of the first screen cylinder 8 and a first rotor wing 9 driven by a rotor 7, enters a third screening area 15 (a fine screening area) through a fine slurry channel 21 in the rotor 7, and heavy slag which does not enter the inside of the first screen cylinder 8 is thrown out under the action of centrifugal force and gravity and enters a heavy slag collecting chamber 5 at the bottom of the screen body 1 to be periodically discharged; the residual slurry with light slag in the first screening area 10 (coarse screening area) continuously rotates and rises, enters a second screening area 13 (light slag screening area) through a light slag channel 20 in the rotor 7, and qualified good slurry enters the outer part of the second screen cylinder 11 and enters a third screening area 15 (fine screening area) under the action of the second screen cylinder 11 and the second rotor wing 12 which are driven by the rotor 7 to rotate; the third screening area 15 (fine screening area) is responsible for screening the good pulp from the first screening area 10 (coarse screening area) and the second screening area 13 (light slag screening area), the good pulp enters the outer part of the third screen cylinder 14 and is discharged by the good pulp pipe 4 under the action of the rotary wings 16 and the third screen cylinder 14 which rotate on the outer side of the rotor 7 and extend on the cylinder wall, and a small part of tail pulp which does not pass through the third screen cylinder 14 is pumped into the tail pulp chamber 19 through a pumping mechanism consisting of the movable ring three 33 at the bottom of the rotor 7 and the static ring three 34 at the bottom of the third screen cylinder 14 and is discharged by the tail pulp pipe 20.
The utility model relates to a combined type pressurized screen through the composite construction who sets up three screening district and rotor, has simplified the flow of papermaking pulping screening workshop section, has improved screening efficiency.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the concept of the present invention, and these improvements and decorations should also be considered as the protection scope of the present invention.
Claims (3)
1. The utility model provides a combined type pressure screen, includes the upper cover that sets up on screen frame and the screen frame, advances thick liquid pipe, good thick liquid pipe, heavy sediment replenishment room, and the coaxial transmission support that sets up of bottom in the screen frame, the coaxial rotor that sets up in transmission support upper portion, its characterized in that:
the inward-flow type screen cylinder below the rotor and the rotor wings arranged on the periphery of the transmission bracket form a first screening area, the outward-flow type screen cylinder above the rotor and the rotor wings fixed on the upper part of the screen body form a second screening area, and the outward-flow type screen cylinder and the outer side extension cylinder wall of the rotor form a third screening area;
a pulp inlet chamber is arranged between the lower part of the first screening area and the screen body, the second screening area is positioned at the upper side of the first screening area, the third screening area is positioned at the outer side of the first screening area, and the pulp enters the third screening area from the first screening area through a good pulp pipeline or enters the second screening area from a light slag channel and then enters the third screening area;
heavy slag which does not pass through the screen cylinder of the first screening area enters the heavy slag complementary collection chamber at the bottom of the screen body under the action of centrifugal force and gravity, light slag which does not pass through the screen cylinder of the second screening area is discharged through the light slag port arranged on the upper cover, good pulp which passes through the screen cylinder of the third screening area is discharged through the good pulp pipe, and tail pulp which does not pass through the screen cylinder of the third screening area enters the tail pulp chamber through the pumping mechanism.
2. A composite pressure screen as defined in claim 1, wherein: a dilution water pipe is arranged in the transmission bracket, and dilution water enters between the rotor and the transmission bracket through the dilution water pipe and continuously flows upwards through a dilution water channel in the rotor to enter a dilution turntable of a second screening area; an upper cover static disc is also arranged in the second screening area, the upper cover static disc is connected with the upper cover through a pair of connecting plates, and water holes are formed in the connecting plates; the diluting rotary disc is provided with a plurality of blades with holes, the diluting rotary disc and the upper cover static disc do relative motion to untwist and dilute the light slag, and dilution water enters the light slag port light slag gathering part through water holes and is sprayed to two sides to wash the light slag.
3. A composite pressure screen as defined in claim 2, wherein: the movable flange arranged at the lower part of the screen cylinder of the first screening area and the static flange connected with the lower part of the transmission bracket form a movable seal, the movable flange arranged at the upper part of the screen cylinder of the second screening area and the static flange connected with the upper cover form a movable seal, and the movable ring arranged at the lower part of the outer extension cylinder wall of the rotor of the third screening area and the static ring connected with the screen body form a movable seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022933633.1U CN214992664U (en) | 2020-12-10 | 2020-12-10 | Combined type pressure screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022933633.1U CN214992664U (en) | 2020-12-10 | 2020-12-10 | Combined type pressure screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214992664U true CN214992664U (en) | 2021-12-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022933633.1U Active CN214992664U (en) | 2020-12-10 | 2020-12-10 | Combined type pressure screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214992664U (en) |
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2020
- 2020-12-10 CN CN202022933633.1U patent/CN214992664U/en active Active
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