CN209854448U

CN209854448U - Pulping machine and grinding disc thereof

Info

Publication number: CN209854448U
Application number: CN201920450881.5U
Authority: CN
Inventors: 黄豪杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-04
Filing date: 2019-04-04
Publication date: 2019-12-27
Anticipated expiration: 2029-04-04

Abstract

The utility model relates to a fiberizer and mill thereof. The abrasive disc comprises a defibering abrasive disc and an abrasive disc. The defibering abrasive disc comprises a defibering chassis and defibering grinding teeth arranged on the defibering chassis, and the defibering grinding teeth are provided with cutting edges used for defibering paper pulp. The grinding abrasive disc is arranged around the periphery of the fluffing abrasive disc. The grinding chip comprises a grinding base plate and grinding teeth arranged on the grinding base plate, the grinding teeth having a grinding surface for grinding the pulp. The mill disc integrates the defibering mill disc and the grinding mill disc, so that defibering and grinding processes of paper pulp can be completed simultaneously by one equipment, and compared with the traditional manufacturing process of series defibering machines and pulping machines, the mill disc integrating the defibering mill disc and the grinding mill disc can reduce investment and electricity consumption of one equipment, and the cost of papermaking and pulping is reduced.

Description

Pulping machine and grinding disc thereof

Technical Field

The utility model relates to a papermaking pulping equipment technical field especially relates to a fiberizer and mill thereof.

Background

Paper plays an indispensable role in daily life of people, and paper raw materials are mostly virgin pulp containing wood fibers or similar fiber materials. The pulping machine is one of the most main devices in the papermaking and pulping process, and the traditional plane pulping machine is difficult to crush and defiber bamboo wood raw pulp and wet-strength paper pulp and can meet the papermaking and pulping requirements only by connecting defibers in series. The paper raw material is defibered, cut, separated and broomed by a defibering machine and then ground by a plane refiner to achieve the beating degree required by papermaking.

In the traditional papermaking process, a plurality of defibering machines and a plane pulping machine are required to be connected in series to meet the papermaking pulping requirement, so that the power consumption is high, and the cost is increased.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide a refiner and a millstone thereof aiming at the problem of reducing the cost of papermaking and pulping.

The defibering grinding disc comprises a defibering chassis and defibering grinding teeth arranged on the defibering chassis, wherein the defibering grinding teeth are provided with cutting edges used for defibering paper pulp; and the number of the first and second groups,

and the grinding abrasive disc is arranged around the periphery of the defibering abrasive disc and comprises a grinding chassis and grinding abrasive teeth arranged on the grinding chassis, and the grinding abrasive teeth are provided with grinding surfaces for grinding the paper pulp.

The defibering abrasive disc and the grinding abrasive disc are integrated on the abrasive disc, and the grinding abrasive disc is arranged on the periphery of the defibering abrasive disc, so that the paper pulp can be firstly crushed, devillicate and broomed through the defibering abrasive disc, and then is ground into qualified paper pulp through the grinding abrasive disc. The traditional plane mill that can only grind paper pulp of contrast, the mill of this application is through discongesting paper pulp, can keep the fiber length of paper pulp, improves the wet weight of paper pulp to improve the performance and the quality of paper pulp. Simultaneously, through the mill of this application, adopt an equipment can accomplish simultaneously and dredge and the grinding technology to paper pulp, compare in the traditional manufacturing process that need series connection fluffer and fiberizer, the mill through the integrated mill of dredging the abrasive disc of loosing and grinding the abrasive disc of this application can reduce the investment and the power consumption of an equipment to papermaking slurrying's cost has been reduced.

In one embodiment, the number of the defibering grinding teeth is multiple, the defibering grinding teeth form a first grinding tooth group and a second grinding tooth group on the defibering chassis, the first grinding tooth group and the second grinding tooth group are arranged in a fan shape, and the first grinding tooth group and the second grinding tooth group are alternately arranged in the circumferential direction of the defibering chassis.

In one embodiment, a head groove is formed between the adjacent first grinding tooth group and the second grinding tooth group, and the width of the head groove is gradually decreased along the direction away from the center of the grinding disc.

In one embodiment, the thickness of the defibering chassis increases in a direction away from the center of the grinding disc, and the width and height of the defibering teeth decrease in the first and/or second sets of grinding teeth.

In one embodiment, the grinding teeth are curved away from the direction of rotation of the grinding disc.

A refiner comprising:

the main shaft is used for being connected with the driving piece;

the pulp inlet pipe is used for inputting paper pulp;

the rotating disc is connected with the main shaft and is provided with the grinding disc; and the number of the first and second groups,

the movable disc is arranged opposite to the rotating disc and connected with the pulp inlet pipe, and the grinding disc is arranged on the movable disc.

The pulping machine is provided with the grinding disc with the defibering grinding disc and the grinding disc, and the grinding disc is arranged on the periphery of the defibering grinding disc, so that the pulp can be firstly crushed, devillicate and broomed through the defibering grinding disc after entering the pulp inlet pipe, and then enters the grinding disc to be ground into qualified pulp. Compare the traditional plane fiberizer that can only grind paper pulp, the performance and the quality of paper pulp can be improved to the defibrator of this application. Simultaneously, the defibering and the grinding process to paper pulp can be accomplished simultaneously to the fiberizer of this application, compare in the traditional manufacturing process that needs series connection defibering machine and fiberizer, can reduce the investment and the power consumption of an equipment through the fiberizer of this application to the cost of papermaking pulping has been reduced.

In one embodiment, the refiner further comprises a base and a shell connected with the base, the shell is provided with a cavity, a mounting hole and a pulp outlet, the rotating disc is arranged in the cavity, the main shaft rotatably penetrates through the mounting hole and is connected with the rotating disc, and the pulp outlet is communicated with the cavity.

In one embodiment, the refiner further comprises an end cover, the end cover is connected with the shell and sleeved outside the pulp inlet pipe, and the end cover is provided with an advancing and retreating assembly which is connected with the pulp inlet pipe and used for adjusting the distance between the rotating disc and the movable disc.

In one embodiment, the driving and reversing assembly comprises a worm and a worm wheel matched with the worm, a first thread is arranged on the outer wall of the slurry inlet pipe, the worm wheel is sleeved outside the slurry inlet pipe and provided with a second thread meshed with the first thread, and the worm can be rotated to drive the slurry inlet pipe to move relative to the end cover.

In one embodiment, the refiner further comprises a slip guide movably passing through the end cover in the axial direction of the end cover and connected with the moving disc.

Drawings

FIG. 1 is a schematic diagram of a grinding disc according to one embodiment;

FIG. 2 is a schematic view of a defibering plate of the abrasive disc shown in FIG. 1;

FIG. 3 is a sectional view showing the structure of a refiner according to an embodiment;

FIG. 4 is a schematic view of an embodiment of a refiner with an end cover open;

fig. 5 is a right side view of the refiner shown in fig. 4.

Description of reference numerals:

10. pulping machine; 100. a grinding disc; 110. defibering the grinding disc; 111. fluffing the chassis; 112. loosening and grinding teeth; 1121. cutting edges; 113. a pulp outlet; 114. a first set of grinding teeth; 115. a second set of grinding teeth; 116. a head tank; 120. grinding the grinding disc; 121. grinding the base plate; 122. grinding and grinding the teeth; 130. a main shaft; 131. a bearing seat; 132. a base; 140. a pulp inlet pipe; 141. a first thread; 151. rotating the disc; 152. a movable tray; 160. a housing; 161. a cavity; 162 mounting holes; 163. a pulp outlet; 170. an end cap; 171. a worm; 172. a worm gear; 173. a box body; 174. a hand wheel; 181. a guide slider; 182. a guide sliding sleeve.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention can be embodied in many different forms other than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention, and it is therefore not to be limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-2, embodiments of the present application provide a grinding disc 100 that may be used in a refiner. Specifically, the abrasive disc 100 includes a fluffing abrasive disc 110 and an abrasive disc 120. Wherein the defibering plate 110 is disposed at a middle position of the grinding disc 100. The defibering grinding plate 110 is provided with a pulp inlet 113 in the center, and the defibering grinding plate 110 comprises a defibering base plate 111 and defibering grinding teeth 112 arranged on the defibering base plate 111. Further, the defibering teeth 112 have cutting edges 1121. The cutting edge 1121 is disposed at one end of the defibering teeth 112 away from the defibering bottom plate 111, so that the cutting edge 1121 of the defibering grinding plate 110 can defiber the pulp after the pulp flows into the grinding disc 100 from the pulp inlet 113. Wherein, the defibering refers to that the pulp is crushed, devillished, broomed and the like in the paper-making pulping production so as to lead the fiber cell walls to generate phenomena of fluffing, tearing, devillished and the like, thereby improving the beating degree of the pulp.

The grinding abrasive discs 120 are arranged around the periphery of the fluffing abrasive disc 110, i.e. the grinding abrasive discs 120 are arranged around the circumference of the fluffing abrasive disc 110. The abrasive sheet 120 and the defibering sheet 110 may be a unitary structure or may be separate pieces. Further, the abrasive disc 120 comprises an abrasive bottom disc 121 and abrasive grinding teeth 122 arranged on said abrasive bottom disc 121. The grinding toothing 122 has an abrasive surface for grinding the pulp, in particular the abrasive surface is formed by the end surface of the grinding toothing 122 remote from the grinding bottom disc 121, which may be a planar surface or a surface with granular protrusions or grooves. The grinding chip 120 can grind the defibered pulp through a grinding surface to obtain pulp that meets the papermaking requirements. Further, a plurality of grinding teeth 122 are disposed at intervals, and the grinding teeth 122 extend in a strip shape in a direction away from the center of the grinding disc 100, so that a slurry outlet groove is formed between two adjacent grinding teeth 122. The pulp outlet groove is used for leading out the paper pulp.

The grinding disc 100 is integrated with the fluffing grinding disc 110 and the grinding disc 120, and the grinding disc 120 is disposed at the periphery of the fluffing grinding disc 110, so that the pulp can be crushed, devillicate and broomed by the fluffing grinding disc 110, and then is ground into qualified pulp by the grinding disc 120. Compared with the traditional plane millstone which can only grind paper pulp, the millstone 100 of the application can keep the fiber length of the paper pulp by defibering the paper pulp, and improves the wet weight of the paper pulp, thereby improving the performance and the quality of the paper pulp. Meanwhile, through the grinding disc 100 of the application, the defibering and grinding processes of the paper pulp can be completed simultaneously by adopting one device, and compared with the traditional manufacturing process needing the defibering machine and the pulping machine in series, the grinding disc 100 integrating the defibering grinding disc 110 and the grinding disc 120 can reduce the investment and the electricity consumption of one device, thereby reducing the cost of papermaking and pulping.

With continued reference to fig. 1-2, specifically, the disintegration grinding tooth 112 has at least one cutting edge 1121, and further, when the disintegration grinding tooth 112 has a plurality of cutting edges 1121, the plurality of cutting edges 1121 are not collinear, for example, the disintegration grinding tooth 112 may be in the shape of a triangle or a triangular prism, and a plurality of edges on the triangle or the triangular prism may be used as cutting edges of the disintegration grinding tooth 112.

Further, the number of the defibering teeth 112 is plural, and the plural defibering teeth 112 are regularly arranged on the defibering chassis 111, so as to form a first set of grinding teeth 114 arranged along the radial direction of the defibering chassis 111 and a second set of grinding teeth 115 arranged in a fan shape. And the first grinding tooth groups 114 and the second grinding tooth groups 115 are alternately arranged along the circumferential direction of the fluffing chassis 111. Further, a head tank 116 is formed between the adjacent first tooth grinding set 114 and the second tooth grinding set 115, and the head tank 116 is used for guiding the pulp.

Further, the first set of grinding teeth 144 arranged in a radial direction enables the extension direction of the headbox 116 to be parallel or approximately parallel to the radial direction of the defibering chassis 111, thereby facilitating the flow of pulp from the pulp inlet 113 into the defibering plate 110 and the flow of defibered pulp into the grinding plate 120. Further, the width of the headbox 116 decreases in a direction away from the center of the refiner disc 100, i.e., the headbox 116 near the stock inlet 113 is wider, thereby allowing the yet coarser pulp to flow smoothly into the defibering refiner plate 110. And the headbox 116 is narrower adjacent the refiner plate 120 to ensure that the pulp remains in the defibering plate 110 for a sufficient time to allow the pulp to be fully defibered. Further, the radial direction of the head tank 116 is not formed in the second grinding tooth group 115 arranged in a fan shape so that the pulp can be sufficiently defibered.

Specifically, in a direction away from the center of the grating disc 100, the widths of the defibering teeth 112 in the first set 114 of grating teeth and/or the second set 115 of grating teeth are in a decreasing trend, and the heights of the defibering teeth 112 in the axial direction of the grating disc 100 are also in a decreasing trend. That is, on the defibering plates 110, the defibering teeth 112 near the inner rings of the defibering plates 110 are larger and higher, while the defibering teeth 112 near the outer rings are smaller and lower. Thus, the bigger the size of the defibering teeth 112 closer to the inner ring of the defibering grinding plate 110, the more sparse the arrangement density, and the method is suitable for coarse pulp grinding. The smaller the size of the defibering teeth 112 closer to the outer ring of the defibering grinding plate 110 is, the denser the arrangement density is, and the defibering teeth are suitable for fine grinding of paper pulp, so that the paper pulp entering from the center of the defibering grinding plate 110 can firstly pass through the defibering teeth 112 closer to the inner ring for coarse grinding, and then the defibering teeth 112 closer to the outer ring for fine grinding, and further the defibering quality of the paper pulp is improved.

Further, in the direction away from the center of the grinding disc 100, the thickness of the defibering chassis 111 gradually increases, that is, the surface of the first disc bottom is inclined, the thickness near the center of the defibering chassis 111 is smaller, and the thickness near the outer ring of the defibering chassis 111 is larger, and the thickness variation of the defibering chassis 111 and the height variation of the defibering teeth 112 are complementary, so as to ensure that the end of the defibering teeth 112 away from the defibering chassis 111 can be located on the same plane.

Specifically, the number of the grinding teeth 122 is also plural, and the plural grinding teeth 122 are arranged along the circumferential direction of the grinding base plate 121. Further, the grinding abrasive disc 120 is a plane abrasive disc, the thickness of the grinding chassis 121 is uniform, and the heights of the plurality of grinding teeth 122 in the axial direction of the abrasive disc are equal, so that the end surfaces of the grinding teeth 122 far away from the grinding chassis 121 are located on the same plane, and the grinding quality of the pulp on the grinding abrasive disc 120 can be guaranteed. Further, the grinding teeth 122 are bent away from the rotational direction of the grinding disc 100, so that the resistance of the pulp to the grinding plate 120 can be reduced, and the contact area of the grinding plate 120 with the pulp can be increased, so that the pulp can be sufficiently ground.

Further, referring to fig. 3-5, the present embodiment also provides a refiner 10, specifically, the refiner 10 includes a main shaft 130, a pulp inlet pipe 140, a rotating disc 151 and a moving disc 152. The main shaft 130 is used to connect with a driving member to transmit torque of the driving member. The spindle 130 is also coupled to the turn disc 151 to drive the turn disc 151 to rotate. The grinding disc 100 of any of the above embodiments is provided on the rotating disc 151. The movable disc 152 is arranged opposite to the rotary disc 151 and the movable disc 152 is also provided with the grinding disc 100 of any of the above embodiments, further, the pulp inlet pipe 140 is connected with the movable disc 152, and pulp is input between the movable disc 152 and the rotary disc 151 through the pulp inlet 113 on the movable disc 152, and then the movable disc 152 and the rotary disc 151 cooperate with each other to defiber and grind the pulp.

The refiner 10 is provided with the refiner disc 100 having the defibering refiner plate 110 and the grinding refiner plate 120, and the grinding refiner plate 120 is provided at the periphery of the defibering refiner plate 110, so that the pulp can be firstly crushed, devillicate and broomed by the defibering refiner plate 110 after entering from the pulp inlet pipe 140, and then enter the grinding refiner plate 120 to be ground into qualified pulp. Contrast the traditional plane fiberizer that can only grind paper pulp, the fiberizer 10 of this application can keep paper pulp fiber length through discongesting paper pulp, improves the wet weight of paper pulp to can improve the performance and the quality of paper pulp. Meanwhile, the pulping machine 10 can simultaneously complete the defibering and grinding processes of the paper pulp, and compared with the traditional manufacturing process which needs the defibering machine and the pulping machine connected in series, the pulping machine 10 can reduce the investment and the power consumption of one device, thereby reducing the cost of papermaking and pulping.

Specifically, the refiner 10 may further include a base 132 and a bearing housing 131, and the main shaft 130 may be rotatably connected to the base 132 through the bearing housing 131. The drive member may be a motor, which is mounted on the base 132. One end of the main shaft 130 is connected to an output shaft of the driving member, and the other end is connected to the rotating disk 151.

Further, the refiner 10 further comprises a housing 160, the housing 160 is connected with the base 132, and the housing 160 is provided with a cavity 161, a mounting hole 162 and a pulp outlet 163 which are communicated with each other. The rotary disk 151 is disposed in the cavity 161, and the main shaft 130 rotatably passes through the mounting hole 162 to be coupled with the rotary disk 151. The pulp outlet 163 communicates with the cavity 161 for pulp outflow.

Further, the refiner 10 further includes an end cover 170, the end cover 170 is connected to the housing 160, for example, one side of the end cover 170 is rotatably connected to one side of the housing 160 through a rotating shaft or a hinge, and the other side of the end cover 170 is locked to or separated from the other side of the housing 160 through a fastener, so that the end cover 170 can open or close the cavity 161 to facilitate maintenance of the grinding disc 100. Further, the end cover 170 is sleeved outside the slurry inlet pipe 140, and the slurry inlet pipe 140 can move relative to the end cover 170, so that the distance between the rotating disc 151 and the moving disc 152 is changed, and different pulping requirements are met.

Further, the end cap 170 is provided with an advancing and retreating assembly, which is connected to the slurry inlet pipe 140 for adjusting the distance between the rotating disc 151 and the moving disc 152 by driving the slurry inlet pipe 140 to move axially. Specifically, referring to fig. 3, the adjustment assembly includes a worm 171 and a worm wheel 172 engaged with the worm 171. Further, the adjustment assembly further comprises a box 173, and the box 173 is fixedly connected with the end cover 170. The worm wheel 172 is rotatably disposed in the case 173. The worm 171 passes through the case 173 and engages with the worm wheel 172. Further, the outer wall of the slurry inlet pipe 140 is provided with a first thread 141, the worm wheel 172 is sleeved outside the slurry inlet pipe 140, and the worm wheel 172 is provided with a second thread meshed with the first thread 141, so that the worm 171 is rotated, the worm 171 can drive the worm wheel 172 to rotate, and since the slurry inlet pipe 140 is in threaded fit with the worm wheel 172 and the movement of the worm wheel 172 in the axial direction is limited by the box 173, the rotation of the worm wheel 172 can drive the slurry inlet pipe 140 to axially move relative to the end cover 170, and further the distance between the rotating disc 151 and the moving disc 152 is changed. Further, a hand wheel 174 is provided on the worm 171 to facilitate rotation of the worm 171.

With continued reference to fig. 3, the refiner 10 further includes a slide guide 181, the slide guide 181 movably penetrates the end cover 170 in the axial direction of the end cover 170 and is connected to the moving plate 152. Further, the number of the sliding guides 181 is at least two, and the sliding guides 181 are uniformly arranged along the circumferential direction of the end cover 170, so as to support the movable plate 152 and limit the rotation of the movable plate 152, and meanwhile, when the gap between the movable plate 152 and the rotary plate 151 is adjusted, the sliding guides 181 play a role in guiding and supporting, thereby preventing the movable plate 152 from shaking and dislocating during the moving process. Further, the refiner 10 further comprises a sliding guide sleeve 182, wherein the sliding guide sleeve 182 is mounted on the end cover 170 and sleeved outside the sliding guide 181, so as to reduce the wear of the sliding guide 181 and the end cover 170. Further, the sliding guide 181 may be a pin.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An abrasive disc, comprising:

and the grinding abrasive disc is arranged around the periphery of the defibering abrasive disc and comprises a grinding chassis and grinding abrasive teeth arranged on the grinding chassis, and the grinding abrasive teeth are provided with grinding surfaces used for grinding the paper pulp.

2. The grinding disc of claim 1, wherein the number of the disintegration teeth is plural, and the plurality of the disintegration teeth form a first grinding tooth group and a second grinding tooth group on the disintegration chassis, wherein the first grinding tooth group and the second grinding tooth group are arranged along a radial direction of the disintegration chassis and are arranged in a fan shape, and the first grinding tooth group and the second grinding tooth group are alternately arranged along a circumferential direction of the disintegration chassis.

3. The grinding disc of claim 2, wherein a headbox is formed between adjacent first and second sets of grinding teeth, the headbox having a decreasing width in a direction away from the center of the grinding disc.

4. The grinding disc of claim 2, wherein the thickness of the fluffing chassis increases in a direction away from the center of the disc, the width and height of the fluffing teeth decreasing in the first set of grinding teeth and/or the second set of grinding teeth.

5. The abrasive disc of claim 1 wherein said abrasive grinding teeth are curved away from a direction of rotation of said abrasive disc.

6. A refiner, characterized by comprising:

the main shaft is used for being connected with the driving piece;

the pulp inlet pipe is used for inputting paper pulp;

a rotating disc connected with the main shaft, wherein the rotating disc is provided with the grinding disc of any one of the claims 1-5; and the number of the first and second groups,

a movable disk, which is arranged opposite to the rotating disk and is connected with the pulp inlet pipe, wherein the movable disk is provided with the grinding disk of any one of the claims 1-5.

7. A refiner as claimed in claim 6, further comprising a base and a housing connected to the base, the housing being provided with a cavity, a mounting hole and a pulp outlet, the rotating disc being disposed in the cavity, the main shaft rotatably passing through the mounting hole and being connected to the rotating disc, the pulp outlet communicating with the cavity.

8. The refiner of claim 7 further comprising an end cap connected to the housing and sleeved outside the slurry inlet pipe, wherein the end cap is provided with an advancing and retreating assembly connected to the slurry inlet pipe for adjusting a distance between the rotating disc and the movable disc.

9. The refiner of claim 8, wherein the advancing and retreating assembly comprises a worm and a worm wheel matched with the worm, the outer wall of the pulp inlet pipe is provided with a first thread, the worm wheel is sleeved outside the pulp inlet pipe and is provided with a second thread meshed with the first thread, and the rotation of the worm can drive the pulp inlet pipe to move relative to the end cover.

10. A refiner as claimed in claim 8, wherein the refiner further comprises a slip guide movably passing through the end cap in an axial direction of the end cap and connected to the moving disc.