CN111304950A - Thick, thin double-grinding formula thick mill equipment based on roll-in - Google Patents

Abstract

The invention provides thick and thin double-grinding type grinding equipment based on rolling, which mainly comprises a grinding generation device, a power driving device, a rolling coarse grinding device consisting of a grinding disc A, a grinding disc B and a press roll, a rolling fine grinding device consisting of the grinding disc B and a grinding disc C, and an anti-sinking auxiliary crushing device consisting of a spoiler A, a spoiler B and a spoiler C. It features that the combination of rotary coarse and fine mills and local rolling and grinding is used to grind pulp. According to the invention, the primary rolling grinding and the rotary coarse grinding of the slurry are realized through the rolling coarse grinding device, the secondary rolling grinding and the rotary fine grinding of the slurry are realized through the rolling fine grinding device, and the anti-sinking and auxiliary pulping of the pulping are realized through the anti-sinking auxiliary pulping device.

Description

Thick, thin double-grinding formula thick mill equipment based on roll-in

Technical Field

The invention relates to a thick and thin double-grinding type grinding device based on rolling, in particular to a grinding device which realizes the generation and output of grinding through a grinding generation device, provides continuous driving force for a rolling coarse grinding device, a rolling fine grinding device and an anti-sinking auxiliary crushing device through a power driving device, realizes the primary rolling grinding and the rotary coarse grinding of slurry through the rolling coarse grinding device, realizes the secondary rolling grinding and the rotary fine grinding of the slurry through the rolling fine grinding device, and realizes the anti-sinking and auxiliary crushing of the grinding through the anti-sinking auxiliary crushing device, belonging to the technical research and development field of the grinding device.

Background

The refiner is one of the most commonly used paper making equipments in paper making industry, and mainly makes the pulp impact and extrude each other in the gap between two millstones through the rotation of the two millstones, and under the action of shearing and grinding, the pulp is ground from coarse to fine, and the binding capacity between fibers in the pulp is enhanced. However, the following problems are caused by the working mode and structural singleness of the existing pulping machine: firstly, the pulping efficiency is low, the two millstones adopted at present carry out butt grinding on slurry, the insufficient grinding is easily caused, if the beating degree of paper pulp required by papermaking is reached, the grinding time needs to be increased, the pulping efficiency is low, and the pulping cost is increased; secondly, the grinding quality is low, the size of paper pulp is easy to be uneven in grinding, and extremely large particles exist in the paper pulp sometimes, so that the grinding quality is reduced, and the grinding disc is easy to wear; thirdly, the fiber mat is not easy to form, the fiber state is not good, the flexibility is low, and the bonding force between the fibers is not ideal enough.

Therefore, aiming at the problems of low refining efficiency, low refining quality, difficult formation of fiber mats and the like commonly existing in the prior refiner in use, the refining equipment with high refining efficiency, high refining quality and easy formation of fiber mats is designed by comprehensively considering the working mode and the structure of the refiner.

Disclosure of Invention

Aiming at the problems of low pulping efficiency, low pulping quality, difficult formation of a fiber mat and the like commonly existing in the use of the existing pulping machine, the invention provides the coarse and fine double-grinding type pulping equipment based on rolling, which can effectively solve the problems.

The invention relates to thick and thin double-grinding type thick and thin pulp grinding equipment based on rolling, which adopts the following technical scheme:

a thick and thin double-grinding type grinding device based on rolling mainly comprises a grinding generation device, a power driving device, a rolling coarse grinding device, a rolling fine grinding device and an anti-sinking auxiliary grinding device, wherein the power driving device is positioned below the grinding generation device; the pulping generation device mainly comprises a grinding cylinder and a cylinder cover, wherein a support ring is installed in the middle of the wall of the grinding cylinder through 6 circumferentially uniformly distributed screws, a pulping outlet is formed in the inner side of the bottom end of the grinding cylinder, 4 circumferentially uniformly distributed support columns are arranged on the outer side of the bottom end of the grinding cylinder, the cylinder cover is installed on the upper end face of the grinding cylinder through 4 circumferentially uniformly distributed screws, 2 symmetrical fan-shaped feed inlets are formed in the cylinder cover, and an inverted cone cylindrical diversion cover is arranged on the lower end face of the cylinder cover; the power driving device mainly comprises a motor and a main shaft, wherein the main shaft is arranged on the motor and is a 4-section stepped shaft, a roller bearing, a bearing cover and a sealing ring are arranged at the joint of the main shaft and the grinding cylinder, and the roller bearing is arranged at the joint of the main shaft and the cylinder cover; the roll-in rough grinding device mainly comprises a grinding disc A, a grinding disc B and a press roll, wherein the grinding disc A is arranged on a main shaft through a flat key, the grinding disc B is arranged on the inner wall of a grinding cylinder, the grinding disc B is supported by a support ring, the grinding disc B is sleeved on the main shaft in an empty way, a sealing ring is arranged at the joint of the grinding disc B and the main shaft, the press roll is respectively arranged on the grinding disc A and the grinding disc B, a sieve mesh A is arranged on the outer side of the grinding disc A, a pressing block A is arranged on the outer side of the lower end face of the; the rolling fine grinding device mainly comprises a grinding disc B and a grinding disc C, wherein the grinding disc C is installed on the main shaft through a flat key, a pressing roller is arranged on the grinding disc C, a pressing block C is arranged on the outer side of the upper end face of the grinding disc C, and a sieve mesh C is arranged on the outer side of the grinding disc C; the anti-settling crushing device mainly comprises a spoiler A, a spoiler B and a spoiler C, wherein the spoiler A and the spoiler B are respectively welded on the inner side and the outer side of the upper end face of the millstone A, and the spoiler C is welded on the outer side of the lower end face of the millstone C.

The grinding disc A, the grinding disc B and the grinding disc C are respectively of a disc-shaped structure, 6 roller holes which are uniformly distributed in the circumferential direction are respectively arranged on the grinding disc A, the grinding disc B and the grinding disc C, annular grooves are respectively arranged on the lower end face of the grinding disc A, the upper end face of the grinding disc B and the upper end face of the grinding disc C, annular discs A, annular discs B and annular discs C are respectively installed in the annular grooves of the grinding disc A, the grinding disc B and the grinding disc C, pressing rollers are respectively installed in the roller holes of the grinding disc A, the grinding disc B and the grinding disc C through rolling shafts, ball bearings and sealing rings, 6 bolts which are uniformly distributed in the circumferential direction are respectively arranged at the joints of the grinding disc A, the grinding disc B and the grinding disc C and the joints of the outer sides of the annular discs A, the annular discs B and the annular discs C, and 12 bolts; the outer side of the upper end of the grinding disc B is provided with a convex ring, the grinding disc B is arranged on the inner wall of the grinding cylinder through the convex ring on the outer side of the upper end, and the number of screws for fixing the convex ring is 6 and the screws are uniformly distributed in the circumferential direction; the distance value between the grinding disc A and the grinding disc B is 2 times of the distance value between the grinding disc B and the grinding disc C.

The number of the pressing blocks A on the grinding disc A is 12, the pressing blocks A are uniformly distributed in the circumferential direction, and the pressing blocks A are of a cuboid structure; the number of the sieve pores A on the grinding disc A is 12, and the sieve pores A are uniformly distributed in the circumferential direction; 2 layers of 6 pressing blocks B which are uniformly distributed in the circumferential direction are arranged on the grinding disc B at equal intervals from inside to outside, the pressing blocks B and the pressing blocks A are equal in height and width, and the length value of the pressing block A is 2 times that of the pressing block B; 2 layers of 6 circumferentially and uniformly distributed sieve pores B are arranged on the grinding disc B, and the diameter value of the sieve pores A is 2 times of that of the sieve pores B; 3 layers of 12 pressing blocks C which are uniformly distributed in the circumferential direction are arranged on the grinding disc C at equal intervals from inside to outside, and the height value, the width value and the length value of each pressing block B are respectively 2 times of those of the pressing blocks C; and 3 layers of 12 circumferentially and uniformly distributed sieve pores B are arranged on the grinding disc C, and the diameter value of each sieve pore B is 2 times that of the sieve pore C.

The quantity of spoiler A, spoiler B and spoiler C is 6 respectively and circumference equipartition, and left, right and the up end of spoiler A and spoiler B are equipped with the triangle sawtooth respectively, and left, right and the lower terminal surface of spoiler C are equipped with the triangle sawtooth respectively, and spoiler A, spoiler B and spoiler C are aequilate, and spoiler C's height value and length value are 2 times of spoiler B height value and length value, and spoiler A and spoiler B's height value are equal, and spoiler B's length value is 2 times of spoiler A length value.

The invention realizes the generation and output of the jordaning through the jordaning generating device, namely, slurry is generated and output through a jordaning outlet after coarse and fine double grinding and rolling grinding in a grinding cylinder of the jordaning generating device; the rolling coarse grinding device, the rolling fine grinding device and the anti-sinking auxiliary crushing device are provided with continuous driving force through the power driving device, namely, the coarse grinding device, the rolling fine grinding device and the anti-sinking auxiliary crushing device are provided with continuous power through a motor and a main shaft in the power driving device; the method comprises the following steps of (1) carrying out primary rolling grinding and rotary coarse grinding on slurry through a rolling coarse grinding device, namely carrying out primary rolling grinding on the slurry through a press roller in the rolling coarse grinding device, and carrying out rotary coarse grinding on the slurry through a grinding disc A and a grinding disc B; the secondary rolling grinding and the rotary fine grinding of the slurry are realized through a rolling fine grinding device, namely, the rough ground slurry is rolled and ground again through a press roller in the rolling fine grinding device, and the slurry is subjected to rotary fine grinding through a grinding disc B and a grinding disc C; the anti-settling and auxiliary pulping of the pulping is realized through the anti-settling and auxiliary pulping device, namely, the spoilers A and B are used for spoiling and shearing the pulp on the grinding disc A, and the spoilers C are used for stirring the pulping at the bottom end of the grinding cylinder, so that the pulping deposition is prevented, and the spoiling and shearing of the pulping is realized, and the pulping quality is improved.

The invention realizes the generation and output of the ground pulp by a ground pulp generating device, namely slurry is generated in a grinding cylinder of the ground pulp generating device after coarse and fine double grinding and rolling grinding and is output by a ground pulp outlet.

The invention is provided with the inverted cone-shaped guide cover at the lower end of the cylinder cover, and slurry entering the grinding cylinder is guided through the design.

The middle part of the wall of the grinding cylinder is provided with the support ring, and the grinding disc B is fixedly supported through the design.

The invention provides continuous driving force for the rolling coarse grinding device, the rolling fine grinding device and the anti-sinking auxiliary grinding device through the power driving device, namely, the motor and the main shaft in the power driving device provide continuous motion for the coarse grinding device, the rolling fine grinding device and the anti-sinking auxiliary grinding device.

The invention is provided with a roller bearing, a bearing cover and a sealing ring at the joint of the main shaft and the grinding cylinder, thereby not only preventing the abrasion between the main shaft and the grinding cylinder, but also realizing the sealing at the joint of the main shaft and the grinding cylinder.

The invention realizes primary rolling grinding and rotary coarse grinding of slurry through a rolling coarse grinding device, namely, the slurry is subjected to primary rolling grinding through a press roller in the rolling coarse grinding device, and the slurry is subjected to rotary coarse grinding through a millstone A and a millstone B, specifically, when the equipment works, the slurry after being sheared and crushed through a spoiler A and a spoiler B enters a space between the millstone A and the millstone B through a sieve pore A, a rotary main shaft drives the millstone A to rotate, the millstone B is fixed on the wall of the millstone, the millstone A rotates relative to the millstone B, the rotary millstone A enables the slurry to mutually impact and extrude in a gap between the millstone A and the millstone B, and under the actions of shearing and grinding, the slurry is ground from coarse to fine, and the binding capacity between fibers in paper pulp is enhanced in the grinding; in addition, the press rolls on the grinding disc A and the grinding disc B roll partial slurry, so that a fiber mat is formed in the slurry under the rolling action, the flexibility of the slurry is improved, and the binding force between fibers is enhanced; in addition, the pressing block A on the grinding disc A and the pressing block B on the grinding disc B have a specific pressurizing effect on local slurry, namely, the slurry in a local area is pressurized and ground through the reduction of a slurry flow channel and the reduction of the gap between the grinding disc A and the grinding disc B, so that the grinding efficiency is improved; the slurry after coarse grinding enters a rolling fine grinding device through a sieve hole B.

The grinding disc B is sleeved on the main shaft in an empty mode, and the grinding disc B is prevented from rotating along with the main shaft through the design.

The grinding disc A and the grinding disc B are provided with the press rolls, and the design realizes the roll pressing of the slurry so as to form the fiber mat.

The invention realizes secondary rolling grinding and rotary fine grinding of slurry by a rolling fine grinding device, namely, the slurry after rough grinding is rolled and ground again by a press roll in the rolling fine grinding device, and the slurry is rotationally fine ground by a millstone B and a millstone C, specifically, when the equipment works, the slurry after rough grinding enters the upper end surface of the millstone C from a sieve hole B, a rotating main shaft drives the millstone C to rotate, so that the slurry impacts and extrudes each other again in the gap between the millstone B and the millstone C, and the slurry is ground and refined again under the action of shearing and grinding, and the binding capacity between fibers in paper pulp is enhanced again in grinding and refining; the compression rollers on the millstone B and the millstone C play a role in rolling local slurry to form a fiber mat, the flexibility of the slurry is improved again, and the binding force between fibers is enhanced; the pressure C on the grinding disc C also plays a role of local pressurized grinding again, and finally, the ground pulp after fine grinding enters the bottom of the grinding cylinder through the sieve holes C.

According to the invention, the sieve pores A, the sieve pores B and the sieve pores C are designed to be sequentially reduced in diameter value, and the control of the size of crushed aggregates in ground pulp after ground pulp is realized through the design, so that the quality of ground pulp is improved.

The invention designs the pressing block A, the pressing block B and the pressing block C to be sequentially reduced in size, and realizes coarse and fine auxiliary grinding of slurry through the design, namely, the auxiliary grinding of the slurry in coarse grinding and fine grinding is realized by reducing the size of the pressing block in different grinding stages.

The invention realizes the anti-sinking and auxiliary pulping of the pulp grinding through the anti-sinking and auxiliary pulping device, namely the spoiler A and the spoiler B are used for performing turbulence shearing and pulping on the pulp on the grinding disc A, and the spoiler C is used for stirring the pulp grinding at the bottom end of the grinding cylinder, so that the pulp grinding deposition is prevented, and the turbulence shearing and pulping of the pulp grinding is realized, thereby improving the pulp grinding quality; in addition, after the ground pulp enters the bottom of the grinding cylinder in the rolling fine grinding device, under the stirring action of the spoiler C, the ground pulp is prevented from being deposited at the bottom of the grinding cylinder, and the secondary shearing and breaking of the ground pulp are realized, so that the overall quality of the ground pulp is improved.

The invention has the beneficial effects that: the device comprises a grinding device, a power driving device, a rolling coarse grinding device, a rolling fine grinding device, a sinking-prevention auxiliary crushing device, a rolling coarse grinding device, a rolling fine grinding device and a sinking-prevention auxiliary crushing device.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a schematic view of the structure of the feed inlet of the present invention on the cylinder cover.

Fig. 3 is a schematic structural view of the pod of the present invention.

Fig. 4 is a schematic view of the construction of the joint of the spindle and the grinding cylinder of the present invention.

Fig. 5 is a schematic view of the structure of the joint of the spindle and the cap of the present invention.

Fig. 6 is a schematic structural view of the rolled rough grinding apparatus of the present invention.

Fig. 7 is a schematic view of the structure of the grinding disc a of the present invention.

Fig. 8 is a partial structural schematic view of the grinding disc a of the present invention.

Fig. 9 is a schematic view of the local arrangement of the press roll, the mesh a and the briquettes a of the present invention on the grinding disc a.

Fig. 10 is a schematic view of the arrangement of the roll holes of the present invention on the ring disk a.

Fig. 11 is a partial structural schematic view of the grinding disk B of the present invention.

Fig. 12 is a schematic view of the local arrangement of the press roll, the screen holes B and the briquettes B on the grinding disc B of the present invention.

Fig. 13 is a schematic view of the arrangement of the roll holes of the present invention on the ring disk B.

Fig. 14 is a schematic structural view of a rolling fine grinding device of the present invention.

Fig. 15 is a partial structural schematic view of the grinding disc C of the present invention.

Fig. 16 is a schematic view showing the local arrangement of the press rolls, the screen holes C and the briquettes C of the present invention on the grinding disc C.

Fig. 17 is a schematic view of the arrangement of the roll holes of the present invention on the ring disk C.

Wherein: 1. pillar, 2, grinding outlet, 3, grinding cylinder, 4, motor, 5, main shaft, 6, compression roller, 7, spoiler C, 8, grinding disc C, 9, grinding disc B, 10, grinding disc A, 11, guide cover, 12, cylinder cover, 13, feed inlet, 14, bearing cover, 15, sealing ring, 16, roller bearing, 17, briquetting A, 18, roller, 19, flat key, 20, bolt, 21, ring disc A, 22, sieve hole A, 23, screw, 24, spoiler A, 25, spoiler B, 26, triangular saw tooth, 27, roller hole, 28, briquetting B, 29, sieve hole B, 30, ring disc B, 31, ring disc C, 32, support ring, 33, sieve hole C, 34 and briquetting C.

Detailed Description

Example (b):

as shown in fig. 1, the thick and thin double-grinding type grinding equipment based on rolling mainly comprises a grinding generation device, a power driving device, a rolling coarse grinding device, a rolling fine grinding device and an anti-sinking auxiliary grinding device, wherein the power driving device is positioned below the grinding generation device, and the rolling coarse grinding device, the rolling fine grinding device and the anti-sinking auxiliary grinding device are sequentially arranged in the grinding generation device from top to bottom.

The invention realizes the generation and output of the jordaning through a jordaning generating device, namely, slurry is generated and output through a jordaning outlet 2 after coarse and fine double grinding and rolling grinding in a grinding cylinder 3 of the jordaning generating device; the power driving device provides continuous driving force for the rolling coarse grinding device, the rolling fine grinding device and the anti-sinking auxiliary crushing device, namely the motor 4 and the main shaft 5 in the power driving device provide continuous power for the coarse grinding device, the rolling fine grinding device and the anti-sinking auxiliary crushing device; the slurry is subjected to primary rolling grinding and rotary coarse grinding through a rolling coarse grinding device, namely the slurry is subjected to primary rolling grinding through a press roller 6 in the rolling coarse grinding device, and the slurry is subjected to rotary coarse grinding through a grinding disc A10 and a grinding disc B9; the secondary rolling grinding and the rotary fine grinding of the slurry are realized through a rolling fine grinding device, namely, the rough ground slurry is rolled and ground again through a press roller 6 in the rolling fine grinding device, and the slurry is subjected to rotary fine grinding through a grinding disc B9 and a grinding disc C8; the anti-settling and auxiliary pulping of the pulping is realized through the anti-settling and auxiliary pulping device, namely, the spoiler A24 and the spoiler B25 are used for turbulent flow shearing and pulping of the pulp on the grinding disc A10, and the spoiler C7 is used for stirring the pulping at the bottom end of the grinding cylinder 3, so that the pulping deposition is prevented, and the turbulent flow shearing and pulping of the pulping is realized, so that the pulping quality is improved.

As shown in fig. 2 and fig. 3, the pulp refining generating device mainly comprises a grinding cylinder 3 and a cylinder cover 12, a support ring 32 is installed in the middle of the wall of the grinding cylinder 3 through 6 circumferentially uniformly distributed screws 23, a pulp refining outlet 2 is arranged on the inner side of the bottom end of the grinding cylinder 3, 4 circumferentially uniformly distributed struts 1 are arranged on the outer side of the bottom end of the grinding cylinder 3, the cylinder cover 12 is installed on the upper end surface of the grinding cylinder 3 through 4 circumferentially uniformly distributed screws 23, 2 symmetrical fan-shaped feed inlets 13 are arranged on the cylinder cover 12, and a reverse conical cylinder-shaped draft shield 11 is arranged on the lower end surface of the cylinder cover.

The invention realizes the generation and output of the ground pulp by a ground pulp generating device, namely slurry is subjected to coarse and fine double grinding and rolling grinding in a grinding cylinder 3 of the ground pulp generating device to generate the required ground pulp and is output by a ground pulp outlet 2, specifically, when the device works, the slurry is poured into the grinding cylinder 3 through a feed inlet 13 on a cylinder cover 12, the slurry is subjected to shearing disintegration by a spoiler A24 and a spoiler B25 in a charging cylinder, primary rolling grinding and rotary coarse grinding between a grinding disc A10 and a grinding disc B9, secondary rolling grinding and rotary fine grinding between the grinding disc B9 and a grinding disc C8, and after anti-sinking shearing disintegration by a spoiler C7, the required ground pulp is generated and is output by the ground pulp.

The invention is provided with an inverted cone-shaped guide cover 11 at the lower end of the cylinder cover 12, and slurry entering the grinding cylinder 3 is guided by the design.

The invention is provided with the support ring 32 in the middle of the wall of the grinding cylinder 3, and the grinding disc B9 is fixedly supported by the design.

Referring to fig. 4 and 5, the power driving device mainly comprises a motor 4 and a main shaft 5, the main shaft 5 is mounted on the motor 4, the main shaft 5 is a 4-segment stepped shaft, a roller bearing 16, a bearing cover 14 and a sealing ring 15 are arranged at the joint of the main shaft 5 and the grinding cylinder 3, and the roller bearing 16 is arranged at the joint of the main shaft 5 and the cylinder cover 12.

The rolling coarse grinding device, the rolling fine grinding device and the anti-sinking auxiliary grinding device are continuously driven by the power driving device, namely the coarse grinding device, the rolling fine grinding device and the anti-sinking auxiliary grinding device are continuously driven by the motor 4 and the main shaft 5 in the power driving device, specifically, when the equipment works, the motor 4 drives the main shaft 5 to rotate, the main shaft 5 sequentially drives the grinding disc C8 and the grinding disc A10 to rotate from bottom to top through the flat key 19, further drives the spoiler A24, the spoiler B25, the pressing block A17 and the pressing roll 6 on the grinding disc A10 to rotate, and drives the spoiler C7, the pressing block C34 and the pressing roll 6 on the grinding disc C8 to rotate.

The invention is provided with a roller bearing 16, a bearing cover 14 and a sealing ring 15 at the joint of the main shaft 5 and the grinding cylinder 3, and by the design, the abrasion between the main shaft 5 and the grinding cylinder 3 is prevented, and the joint of the main shaft 5 and the grinding cylinder 3 is sealed.

Referring to fig. 6, 7, 8, 9, 10, 11, 12 and 13, the roll-in rough grinding device mainly comprises a grinding disc a10, a grinding disc B9 and a press roll 6, wherein the grinding disc a10 is mounted on a main shaft 5 through a flat key 19, a grinding disc B9 is mounted on the inner wall of a grinding cylinder 3, a grinding disc B9 is supported by a support ring 32, a grinding disc B9 is sleeved on the main shaft 5, a seal ring 15 is arranged at the joint of the grinding disc B9 and the main shaft 5, the press roll 6 is mounted on the grinding disc a10 and the grinding disc B9 respectively, a sieve hole a22 is arranged on the outer side of the grinding disc a10, a pressing block a17 is arranged on the outer side of the lower end face of the grinding disc a10, a sieve hole B29 is arranged on the inner side of.

The invention realizes the primary rolling grinding and the rotary coarse grinding of the slurry by a rolling coarse grinding device, namely, the slurry is subjected to the primary rolling grinding by a press roller 6 in the rolling coarse grinding device, and the slurry is subjected to the rotary coarse grinding by a grinding disc A10 and a grinding disc B9, specifically, when the equipment works, the crushed slurry is sheared by a spoiler A24 and a spoiler B25 and enters a space between a grinding disc A10 and a grinding disc B9 through a sieve hole A22, a rotary main shaft 5 drives the grinding disc A10 to rotate, the grinding disc B9 is fixed on the wall of a grinding cylinder 3, the grinding disc A10 rotates relative to the grinding disc B9, the slurry is impacted and extruded mutually in a gap between the grinding disc A10 and the grinding disc B9 by the rotary grinding disc A10, the slurry is ground from coarse to fine under the shearing and grinding effects, and the bonding capability between fibers in the pulp is enhanced; in addition, the press rolls 6 on the grinding disc A10 and the grinding disc B9 roll local slurry, so that a fiber mat is formed in the slurry under the rolling action, the flexibility of the slurry is improved, and the bonding force between fibers is enhanced; in addition, a briquetting A17 on a grinding disc A10 and a briquetting B28 on a grinding disc B9 have a specific pressurizing effect on local slurry, namely, the slurry in a local area is pressurized and ground by reducing a slurry flow channel and reducing gaps between the grinding disc A10 and the grinding disc B9, so that the grinding efficiency is improved; the coarsely ground slurry enters the rolling fine grinding device through a sieve hole B29.

The grinding disc B9 is sleeved on the main shaft 5 in an empty mode, and the grinding disc B9 is prevented from rotating along with the main shaft 5 through the design.

The press rolls 6 are arranged on the grinding disc A10 and the grinding disc B9, and the design realizes the rolling of the slurry so as to form the fiber mat.

Referring to fig. 14, 15, 16 and 17, the rolling fine grinding device mainly comprises a grinding disc B9 and a grinding disc C8, wherein the grinding disc C8 is mounted on the main shaft 5 through a flat key 19, a press roll 6 is arranged on the grinding disc C8, a press block C34 is arranged on the outer side of the upper end face of the grinding disc C8, and a sieve hole C33 is arranged on the outer side of the grinding disc C8.

Grinding disc A10, grinding disc B9 and grinding disc C8 are respectively in a disc-shaped structure, grinding disc A10, grinding disc B9 and grinding disc C8 are respectively provided with 6 circumferentially uniformly distributed roller holes 27, the lower end face of grinding disc A10, grinding disc B9 and the upper end face of grinding disc C8 are respectively provided with annular grooves, annular disc A21, annular disc B21 and annular disc C21 are respectively installed in the annular grooves of grinding disc A21, grinding disc B21 and grinding disc C21, a press roller 6 is respectively installed in the roller holes 27 of grinding disc A21, grinding disc B21 and grinding disc C21 through a roller 18, a ball bearing and a sealing ring 15, 6 circumferentially uniformly distributed bolts 20 are respectively arranged at the inner side connecting positions of grinding disc A21, grinding disc B21 and grinding disc C21, and the outer side connecting positions of grinding disc A21, grinding disc B21 and grinding disc C21 are respectively provided with circumferentially uniformly distributed bolts 20; the outer side of the upper end of the grinding disc B9 is provided with a convex ring, the grinding disc B9 is arranged on the inner wall of the grinding cylinder 3 through the outer side convex ring of the upper end, and the number of screws 23 for fixing the convex ring is 6 and the screws are uniformly distributed in the circumferential direction; the spacing value between abrasive disc a10 and abrasive disc B9 was 2 times the spacing value between abrasive disc B9 and abrasive disc C8.

The number of the pressing blocks A17 on the grinding disc A10 is 12, the pressing blocks A17 are uniformly distributed in the circumferential direction, and the pressing blocks A17 are of cuboid structures; the number of the sieve holes A22 on the grinding disc A10 is 12, and the sieve holes A22 are uniformly distributed in the circumferential direction; 2 layers of 6 pressing blocks B28 which are uniformly distributed in the circumferential direction are arranged on the grinding disc B9 at equal intervals from inside to outside, the pressing blocks B28 and the pressing blocks A17 are equal in height and width, and the length value of the pressing block A17 is 2 times of the length value of the pressing block B28; 2 layers of 6 circumferentially and uniformly distributed sieve holes B29 are arranged on the grinding disc B9, and the diameter value of the sieve hole A22 is 2 times of that of the sieve hole B29; 3 layers of 12 pressing blocks C34 which are uniformly distributed in the circumferential direction are arranged on the grinding disc C8 at equal intervals from inside to outside, and the height value, the width value and the length value of each pressing block B28 are 2 times of those of the pressing block C34; the grinding disc C8 is provided with 3 layers of 12 circumferentially uniformly distributed sieve holes B29, and the diameter value of the sieve holes B29 is 2 times of that of the sieve holes C33.

The method realizes secondary rolling grinding and rotary fine grinding of the slurry through the rolling fine grinding device, namely, the slurry after coarse grinding is rolled and ground again through the press roller 6 in the rolling fine grinding device, and the slurry is rotationally fine ground through the grinding disc B9 and the grinding disc C8, and specifically, when the equipment works, the slurry after coarse grinding enters the upper end face of the grinding disc C8 through the sieve hole B29, the rotating spindle 5 drives the grinding disc C8 to rotate, so that the slurry impacts and extrudes each other again in the gap between the grinding disc B9 and the grinding disc C8, the slurry is ground and refined again under the actions of shearing and grinding, and the bonding capacity between fibers in the paper pulp is enhanced again in grinding and refining; the press rolls 6 on the grinding disc B9 and the grinding disc C8 play a role in rolling local slurry to form a fiber mat, the flexibility of the slurry is improved again, and the bonding force between fibers is enhanced; the pressure C on the grinding disc C8 also acts as a local pressure grinding again, and the finely ground pulp finally enters the bottom of the grinding cylinder 3 through the screen holes C33.

According to the invention, the diameter values of the sieve mesh A22, the sieve mesh B29 and the sieve mesh C33 are designed to be reduced in sequence, and the design realizes the control of the size of crushed aggregates in ground pulp after the ground pulp is ground, so that the quality of ground pulp is improved.

According to the invention, the briquetting A17, the briquetting B28 and the briquetting C34 are designed to be reduced in size in sequence, and coarse and fine auxiliary grinding of slurry is realized through the design, namely, auxiliary grinding of slurry in coarse grinding and fine grinding is realized by reducing the size of the briquetting in different grinding stages.

The anti-settling crushing device mainly comprises a spoiler A24, a spoiler B25 and a spoiler C7, wherein the spoiler A24 and the spoiler B25 are respectively welded on the inner side and the outer side of the upper end face of a grinding disc A10, and the spoiler C7 is welded on the outer side of the lower end face of the grinding disc C8.

The number of the spoilers A24, B25 and C7 is 6 respectively and are circumferentially and uniformly distributed, the left, right and upper end faces of the spoilers A24 and B25 are provided with triangular saw teeth 26 respectively, the left, right and lower end faces of the spoilers C7 are provided with triangular saw teeth 26 respectively, the widths of the spoilers A24, B25 and C7 are equal, the height value and the length value of the spoiler C7 are 2 times of the height value and the length value of the spoiler B25, the height values of the spoilers A24 and B25 are equal, and the length value of the spoiler B25 is 2 times of the length value of the spoiler A24.

The invention realizes the anti-settling and auxiliary pulping of the pulp grinding through the anti-settling and auxiliary pulping device, namely the spoiler A24 and the spoiler B25 carry out turbulence shearing and pulping on the pulp on the grinding disc A10, and the spoiler C7 stirs the pulp grinding at the bottom end of the grinding cylinder 3, thereby not only preventing the pulp grinding from settling, but also realizing the turbulence shearing and pulping of the pulp grinding, and improving the quality of the pulp grinding, in particular to that when the equipment works, the pulp entering from the feeding hole 13 of the cylinder cover 12 enters between the spoiler A24 and the spoiler B25, and the pulp is sheared and crushed under the rotation of the spoiler A24 and the spoiler B25, so that the crushed material in part of the pulp is crushed, and the grinding efficiency is improved for subsequent coarse and fine grinding; in addition, after the ground pulp enters the bottom of the grinding barrel 3 in the rolling fine grinding device, under the stirring action of the spoiler C7, the ground pulp is prevented from depositing at the bottom of the grinding barrel 3, and the secondary shearing and breaking of the ground pulp are realized, so that the overall quality of the ground pulp is improved.

Claims (4)

1. A thick and thin double-grinding type grinding device based on rolling mainly comprises a grinding generation device, a power driving device, a rolling coarse grinding device, a rolling fine grinding device and an anti-sinking auxiliary grinding device, wherein the power driving device is positioned below the grinding generation device; the method is characterized in that: the pulping generation device mainly comprises a grinding cylinder and a cylinder cover, wherein a support ring is installed in the middle of the wall of the grinding cylinder through 6 circumferentially uniformly distributed screws, a pulping outlet is formed in the inner side of the bottom end of the grinding cylinder, 4 circumferentially uniformly distributed support columns are arranged on the outer side of the bottom end of the grinding cylinder, the cylinder cover is installed on the upper end face of the grinding cylinder through 4 circumferentially uniformly distributed screws, 2 symmetrical fan-shaped feed inlets are formed in the cylinder cover, and an inverted cone cylindrical diversion cover is arranged on the lower end face of the cylinder cover; the power driving device mainly comprises a motor and a main shaft, wherein the main shaft is arranged on the motor and is a 4-section stepped shaft, a roller bearing, a bearing cover and a sealing ring are arranged at the joint of the main shaft and the grinding cylinder, and the roller bearing is arranged at the joint of the main shaft and the cylinder cover; the roll-in rough grinding device mainly comprises a grinding disc A, a grinding disc B and a press roll, wherein the grinding disc A is arranged on a main shaft through a flat key, the grinding disc B is arranged on the inner wall of a grinding cylinder, the grinding disc B is supported by a support ring, the grinding disc B is sleeved on the main shaft in an empty way, a sealing ring is arranged at the joint of the grinding disc B and the main shaft, the press roll is respectively arranged on the grinding disc A and the grinding disc B, a sieve mesh A is arranged on the outer side of the grinding disc A, a pressing block A is arranged on the outer side of the lower end face of the; the rolling fine grinding device mainly comprises a grinding disc B and a grinding disc C, wherein the grinding disc C is installed on the main shaft through a flat key, a pressing roller is arranged on the grinding disc C, a pressing block C is arranged on the outer side of the upper end face of the grinding disc C, and a sieve mesh C is arranged on the outer side of the grinding disc C; the anti-settling crushing device mainly comprises a spoiler A, a spoiler B and a spoiler C, wherein the spoiler A and the spoiler B are respectively welded on the inner side and the outer side of the upper end face of the millstone A, and the spoiler C is welded on the outer side of the lower end face of the millstone C.

2. A refining apparatus based on roller press and coarse and fine double grinding as claimed in claim 1, characterized in that: the grinding disc A, the grinding disc B and the grinding disc C are respectively of a disc-shaped structure, 6 roller holes which are uniformly distributed in the circumferential direction are respectively arranged on the grinding disc A, the grinding disc B and the grinding disc C, annular grooves are respectively arranged on the lower end face of the grinding disc A, the upper end face of the grinding disc B and the upper end face of the grinding disc C, annular discs A, annular discs B and annular discs C are respectively installed in the annular grooves of the grinding disc A, the grinding disc B and the grinding disc C, pressing rollers are respectively installed in the roller holes of the grinding disc A, the grinding disc B and the grinding disc C through rolling shafts, ball bearings and sealing rings, 6 bolts which are uniformly distributed in the circumferential direction are respectively arranged at the joints of the grinding disc A, the grinding disc B and the grinding disc C and the joints of the outer sides of the annular discs A, the annular discs B and the annular discs C, and 12 bolts; the outer side of the upper end of the grinding disc B is provided with a convex ring, the grinding disc B is arranged on the inner wall of the grinding cylinder through the convex ring on the outer side of the upper end, and the number of screws for fixing the convex ring is 6 and the screws are uniformly distributed in the circumferential direction; the distance value between the grinding disc A and the grinding disc B is 2 times of the distance value between the grinding disc B and the grinding disc C.

3. A refining apparatus based on roller press and coarse and fine double grinding as claimed in claim 1, characterized in that: the number of the pressing blocks A on the grinding disc A is 12, the pressing blocks A are uniformly distributed in the circumferential direction, and the pressing blocks A are of a cuboid structure; the number of the sieve pores A on the grinding disc A is 12, and the sieve pores A are uniformly distributed in the circumferential direction; 2 layers of 6 pressing blocks B which are uniformly distributed in the circumferential direction are arranged on the grinding disc B at equal intervals from inside to outside, the pressing blocks B and the pressing blocks A are equal in height and width, and the length value of the pressing block A is 2 times that of the pressing block B; 2 layers of 6 circumferentially and uniformly distributed sieve pores B are arranged on the grinding disc B, and the diameter value of the sieve pores A is 2 times of that of the sieve pores B; 3 layers of 12 pressing blocks C which are uniformly distributed in the circumferential direction are arranged on the grinding disc C at equal intervals from inside to outside, and the height value, the width value and the length value of each pressing block B are respectively 2 times of those of the pressing blocks C; and 3 layers of 12 circumferentially and uniformly distributed sieve pores B are arranged on the grinding disc C, and the diameter value of each sieve pore B is 2 times that of the sieve pore C.

4. A refining apparatus based on roller press and coarse and fine double grinding as claimed in claim 1, characterized in that: the quantity of spoiler A, spoiler B and spoiler C is 6 respectively and circumference equipartition, and left, right and the up end of spoiler A and spoiler B are equipped with the triangle sawtooth respectively, and left, right and the lower terminal surface of spoiler C are equipped with the triangle sawtooth respectively, and spoiler A, spoiler B and spoiler C are aequilate, and spoiler C's height value and length value are 2 times of spoiler B height value and length value, and spoiler A and spoiler B's height value are equal, and spoiler B's length value is 2 times of spoiler A length value.

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