阅读说明：本技术 新型高浓度双区转子 (Novel high-concentration double-zone rotor ) 是由 石鑫浩 张亚林 徐莉莉 于 2019-10-15 设计创作，主要内容包括：本发明涉及筛选设备技术领域,特别是涉及新型高浓度双区转子,现有转子能量消耗大,且不能够解决良浆浓度高的问题,新型高浓度双区转子,包括外表面带有多个凸块的外壳体,转子外设置筛鼓与外壳体形成筛选区,外壳体一端设置中心开孔并带有轴套的封头,外壳体内设置与外壳体同轴的内筒体,内筒体远离封头的一端与外壳体之间设置有隔板,隔板与外壳体之间形成开口,隔板连接与内筒体对应的下筒体,外壳体表面依次交错设置有长孔状的B区浆液进口和菱形的粗渣进口,粗渣进口与隔板之间设置有导流板,长孔上方设置有导流条,隔板上设置有第二入口,不增加转子表面凸块并解决良浆浓度过高的问题,在筛选设备技术领域具有良好的发展前景。(The invention relates to the technical field of screening equipment, in particular to a novel high-concentration double-area rotor, which has high energy consumption and can not solve the problem of high concentration of good pulp, and comprises an outer shell, wherein the outer surface of the outer shell is provided with a plurality of lugs, a screen cylinder is arranged outside the rotor to form a screening area with the outer shell, one end of the outer shell is provided with a seal head with a central hole and a shaft sleeve, an inner cylinder coaxial with the outer shell is arranged in the outer shell, a baffle plate is arranged between one end of the inner cylinder, which is far away from the seal head, and the outer shell, an opening is formed between the baffle plate and the outer shell, the baffle plate is connected with a lower cylinder corresponding to the inner cylinder, the surface of the outer shell is sequentially provided with a long-hole-shaped B-area pulp inlet and a rhombic coarse slag inlet in a staggered manner, a guide plate is arranged between the coarse slag inlet and the baffle plate, has good development prospect in the technical field of screening equipment.)

1. The novel high-concentration double-zone rotor comprises an outer shell (3) with a plurality of lugs (7) on the outer surface, wherein the lugs (7) are arranged on the surface of the outer shell (3) in an array manner, a screen drum (13) and the outer shell (1) are arranged outside the rotor to form an annular screening zone together, the novel high-concentration double-zone rotor is characterized in that one end of the outer shell (3) is provided with a seal head (2) with a central hole, the center of the seal head (2) is provided with a shaft sleeve (1) and sinks into the rotor through the hole, an inner cylinder (4) coaxial with the outer shell (3) is arranged in the outer shell (3), one end of the inner cylinder (4) is connected with the seal head (2), the other end of the inner cylinder (4) extends to the middle position of the outer shell (3), a partition plate (10) is arranged between one end of the inner cylinder (4) far away from the seal head and the outer shell (3), the partition plate (10) is connected with the inner, the baffle is connected lower barrel (8) that corresponds with interior barrel (4), shell body (3) surface is crisscross in proper order and is provided with B district thick liquid import (14) of long pore form and rhombus thick sediment import (15), be provided with between thick sediment import and baffle (10) and be used for with the sediment from thick sediment import water conservancy diversion to the guide plate (6) of rotor lower half, the one end that the slot hole is close to head (2) is provided with water conservancy diversion strip (9), be close to on the baffle head (2) surface between interior barrel (4) and shell body (3) is provided with and supplies the thick liquid to get into second entry (12) in the rotor, each thick sediment import sets up thick sediment import shell (5) of being convenient for thick sediment to get into thick sediment import outward.

2. The novel high-concentration double-zone rotor as claimed in claim 1, wherein the shaft sleeve (1) is used for a pressure screen transmission shaft to pass through, and the shaft sleeve (1) and the pressure screen transmission shaft are tightly matched through arranging an expansion sleeve so as to achieve the purpose of transmitting the torque of the rotor rotation.

3. The novel high-concentration double-zone rotor as claimed in claim 1, wherein the guide strips (9) are formed by rolling steel strips, the radian of the inner surface of each guide strip (9) is completely attached to the outer surface of the outer shell (3), the guide strips (9) are higher than the bottom surface of the heavy slag inlet shell, and the distance between each guide strip (9) and the bottom surface of the heavy slag inlet shell is 20-25 mm.

4. The novel high-concentration double-zone rotor as claimed in claim 1, wherein each guide plate (6) is formed by bending and cutting a square steel plate, and two bending surfaces of each baffle plate are triangular and form an included angle of more than 90 degrees with a main plate.

5. The novel high-concentration double-zone rotor as recited in claim 1, wherein each coarse slag inlet shell (5) is formed by welding an arc-shaped plate and two similar triangular plates with an arc edge in a combined manner, and each coarse slag inlet shell (5) is welded on the outer surface of the outer shell (3) and corresponds to each rhombic coarse slag inlet on the outer shell (3) in a one-to-one manner.

6. A new high-consistency dual zone rotor according to claim 5, characterized in that the height of each coarse slag inlet shell (5) is lower than the height of the bumps (7).

7. The novel high-concentration double-zone rotor as claimed in claim 1, wherein the outer shell (3) is formed by welding steel plate rolls with uniform thickness, the outer shell (3) is machined inside and outside, the inner cylinder (4) is formed by welding after the steel plate material is rolled, and the lower cylinder (8) is formed by welding after the corrosion-resistant steel plate material is rolled.

8. A new high-concentration dual-zone rotor according to claim 1, characterized in that there are a plurality of said second inlets (12), each of said second inlets being arranged equidistantly around the center of the head (2) in a ring shape at the edge position of the head.

9. A new high-concentration dual-zone rotor according to claim 1, characterized in that each of said projections (7) is cast from corrosion-resistant steel.

Technical Field

The invention relates to the technical field of screening equipment, in particular to a novel high-concentration double-zone rotor.

Background

The rotor is mainly applied to a large-scale screening equipment pressure screen in the screening stage in the pulping and papermaking industry; the rotor of the traditional cylindrical pressure sieve is generally provided with a shaft sleeve, a sealing head, a cylinder body and lugs, wherein the cylinder body is of a sealed cylinder structure, the lugs are arranged outside the cylinder body according to a certain rule, the whole screening length from screening to pulp feeding to coarse slag discharging is realized, the thickening phenomenon of the pulp inevitably occurs, the rotor mainly has larger fluidity passing through sieve holes or sieve gaps compared with the fiber due to water, in order to reduce the phenomenon, the lower part of the rotor needs to be provided with more lugs and more dilution water to reduce the concentration of good pulp, and therefore the ideal screening effect is achieved.

However, the number of the lugs at the lower part of the barrel rotor is large at present, and the resistance of the rotor to liquid is large in the rotation process of the rotor in the liquid, so that the energy consumption is increased, and the use amount of black liquor is increased due to the addition of a large amount of dilution water.

Chinese patent CN 207452562U discloses a novel pressure sieve rotor, which comprises a cylindrical rotor body, pulse lugs are uniformly and symmetrically distributed on the outer circumferential surface of the rotor body, a sieve drum which forms an annular sieving area together with the outer circumferential surface of the rotor body is arranged outside the outer circumferential surface of the rotor body, and a long hole which divides the annular sieving area into a first sieving area and a second sieving area is arranged on the rotor body above a transmission partition plate.

During operation of the rotor, the slurry flows through the rotor over a large area, causing a large resistance to the rotating slurry, thereby increasing energy consumption.

Disclosure of Invention

In view of the above situation, the present invention provides a novel high-concentration dual-zone rotor to overcome the defects of the prior art, and solves the problems that the energy consumption of the prior rotor is large and the concentration of the good pulp cannot be too high without increasing the number of the bumps on the surface of the rotor.

The technical scheme is that the novel high-concentration double-area rotor comprises an outer shell, wherein the outer surface of the outer shell is provided with a plurality of convex blocks, the convex blocks are arrayed on the surface of the outer shell, a screen cylinder and the outer shell are arranged outside the rotor to form an annular screening area, one end of the outer shell is provided with a seal head with a central opening, the seal head bulges in the direction far away from the inside of the rotor, the connecting position of the rotor can be raised, so that a sufficient space is reserved to adapt to a transmission system, the top of the seal head is provided with an exhaust hole, the central position of the seal head is provided with a shaft sleeve and sinks into the rotor through the opening, the seal head and the shaft sleeve are welded and formed, the shaft sleeve is welded and formed by seal head parts, the phenomenon that the rotor connected by bolts is seized by threads under the action of high torque force is avoided, an inner cylinder coaxial with the, thereby reducing the resistance caused by slurry turbulence and reducing energy loss, wherein one end of the inner barrel is connected with the end enclosure, the other end of the inner barrel extends to the middle position of the outer shell, a partition plate is arranged between one end of the inner barrel, which is far away from the end enclosure, and the outer shell, the partition plate is connected with the inner barrel and forms an opening with the outer shell, the partition plate is connected with the lower barrel corresponding to the inner barrel, the outer surface of the lower barrel is smooth and forms a space with smooth inner wall without cotton hanging with the outer shell, the surface of the outer shell is sequentially provided with a long hole-shaped B area slurry inlet and a rhombic coarse slag inlet in a staggered manner, a guide plate for guiding slurry from the coarse slag inlet to the lower half part of the rotor is arranged between the coarse slag inlet and the partition plate, one end of the long hole, which is close to the end enclosure, between the inner barrel and the outer shell, is provided with, the slurry entering the rotor through the second inlet synchronously rotates along with the movement of the rotor in a space formed by the inner cylinder and the outer shell, the outer surface of the inner cylinder and the inner surface of the outer shell are smooth so as to ensure that the wall surface of the space formed by the inner cylinder and the outer shell is smooth and does not hang cotton, a coarse slag inlet shell facilitating coarse slag to enter the coarse slag inlets is arranged outside each rhombic coarse slag inlet, and the outer surface of the coarse slag inlet cover is streamline.

Furthermore, the shaft sleeve is formed by processing an anti-corrosion stainless steel material, the shaft sleeve is used for a pressure screen transmission shaft to pass through, the shaft sleeve and the pressure screen transmission shaft are tightly matched through the expansion sleeve, so that the purpose of transmitting the torque of the rotation of the rotor is achieved, the inner hole of the shaft sleeve is processed and is in adaptive connection with the expansion sleeve, and the expansion sleeve is tightly held with the pressure screen transmission shaft.

Furthermore, the diversion strip is formed by rolling a steel plate strip to reduce the resistance when the slurry flows, the radian of the inner surface of the diversion strip is completely attached to the outer surface of the outer shell and fixed with the outer shell in a welding mode, the diversion strip is higher than the bottom surface of the heavy slag inlet shell, and the distance between the diversion strip and the bottom surface of the heavy slag inlet shell is 20-25 mm.

Furthermore, each guide plate is formed by bending and cutting a square steel plate, two bending surfaces of each baffle plate are triangular and form an included angle larger than 90 degrees with the main plate, a space formed by bending each guide plate completely covers a rhombic coarse slag inlet on the outer shell, and an opening formed between the lower part of each guide plate and the outer shell completely corresponds to the opening formed between the lower part of each guide plate and the outer shell, so that a smooth channel for coarse slag to flow from the coarse slag inlet to the B screening area at the lower half part of the rotor is formed.

Still further, each coarse slag import shell is formed by an arc and two class set squares combination welding, class set square includes the long limit of an arc and two mutually perpendicular's minor face, each the arc long limit of class set square is fixed with the arc and is welded, each a minor face welding of coarse slag import shell is in the outer surface of shell body and with each coarse slag import one-to-one on the shell body, keep consistent so that the cooperation is used, coarse slag import shell links up smoothly with the rhombus coarse slag import junction of outer surface of shell body surface, does not have step and closed angle to guarantee not hang the cotton.

Furthermore, the height of each coarse slag inlet shell is lower than the height of the bump, and the height of each coarse slag inlet is 1mm-2mm lower than the height of the bump.

Further, the shell body is formed by the steel sheet edge rolling welding and with head welded fastening, the equal machining inside and outside the shell body guarantees that the wall thickness is even unanimous, interior barrel by steel sheet material edge rolling back welded fastening and with head welded fastening, interior barrel when welding with the head, keep concentric with the shell body, down the barrel by corrosion-resistant steel sheet material edge rolling welded fastening to pass through welded mode fixed connection with the baffle by corrosion-resistant material steel sheet cutting shaping, the baffle is with rotor inside two parts about being cut apart into, and the upper half is acted as the inner wall by interior barrel, and the latter half is acted as the inner wall by lower barrel.

Furthermore, the second inlets are arranged at the edge of the seal head in an annular shape at equal intervals around the center of the seal head and are uniformly distributed circumferentially, and the sum of the opening areas of the shell body for the slurry inlets in the B area is not smaller than the sum of the opening areas of the second inlets on the seal head, so that the slurry is prevented from being blocked or blocked due to the fact that the slurry stays in the cavity due to the large inlet area and the small outlet area.

Furthermore, each lug is formed by casting corrosion-resistant steel, and when the rotor rotates, the lug and the screen cylinder form a working area, so that continuous screening can be ensured.

The rotor is divided into two parts by a partition plate, the upper half part of the rotor with an inner cylinder body is a screening area A, the lower half part of the rotor with a lower cylinder body is a screening area B, and after slurry containing fibers and heavy slag enters a pressure screen cavity, the slurry is divided into two parts by different modes of entering the rotor and respectively enters the screening area A and the screening area B.

The flow of the liquid slurry entering the A screening area is as follows: after the pulp enters the pressure screen cavity, in the A screening area, qualified fibers and black liquor enter a good pulp pipe through screen gaps, and the remaining heavy slag and unqualified fibers continue to precipitate downwards; when heavy slag and unqualified fibers reach the upper surface of the flow guide strip, the rotating rotor brings the heavy slag and the fibers into a rhombic heavy slag inlet, and the heavy slag and the fibers enter a space formed by an outer shell and a lower cylinder at the lower half part of the rotor through a channel formed between a coarse slag inlet and a baffle plate by the flow guide plate and finally reach a slag discharge area at the bottom;

the flow of the liquid slurry entering the B screening area is as follows: the slurry enters a space formed between the inner cylinder and the outer shell in the rotor cavity from a plurality of second inlets on the rotor end enclosure, and is discharged to a B screening area from a B area slurry inlet on the surface of the outer shell, qualified fibers and black liquor can enter a good slurry pipe through screen gaps, and the remaining heavy slag and unqualified fibers continue to precipitate downwards to a slag discharge area at the bottom of the rotor.

The invention has the technical effects that the inner cylinder, the partition plate and the lower cylinder are arranged in the rotor, the inner part of the rotor is divided into two parts, the original whole screening area is divided into an upper layer and a lower layer according to different flow directions of liquid slurry, the height from the slurry inlet to the slag discharge area of each layer is reduced, the shortened distance is half of the original design, the purpose that the slurry is not obviously thickened is achieved on the premise of not increasing the number of outer convex blocks of the rotor, dilution water is not required to be injected at all, the rotor can adapt to the slurry with higher concentration, the core screening function is met, the average energy consumption is low, the consumption of diluted black liquor can be greatly reduced, the energy is saved, the environment is protected, and the energy consumption is less.

Drawings

FIG. 1 is a schematic diagram of the present invention.

Fig. 2 is a schematic view of the slurry flow path structure of the present invention.

Fig. 3 is a schematic top view of the present invention.

FIG. 4 is a schematic view of the coarse slag inlet shell structure of the present invention.

Fig. 5 is a schematic view of a baffle configuration of the present invention.

1. The device comprises a shaft sleeve, 2 parts of a seal head, 3 parts of an outer shell, 4 parts of an inner cylinder, 5 parts of a coarse slag inlet shell, 6 parts of a guide plate, 7 parts of a lug, 8 parts of a lower cylinder, 9 parts of a guide strip, 10 parts of a partition plate, 11 parts of a first opening, 12 parts of a second inlet, 13 parts of a screen cylinder, 14 parts of a slurry inlet in a B area, 15 parts of a coarse slag inlet and 16 parts of a slag discharging area. 17.A screening area and 18.B screening area.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicating the directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.