CN210066335U

CN210066335U - Multipurpose pulping machine

Info

Publication number: CN210066335U
Application number: CN201920793981.8U
Authority: CN
Inventors: 张婷宇; 王昊; 陈勇; 姚嘉玲; 刘华国
Original assignee: Nanning Institute
Current assignee: Nanning Institute
Priority date: 2019-05-29
Filing date: 2019-05-29
Publication date: 2020-02-14
Anticipated expiration: 2029-05-29

Abstract

The utility model provides a multipurpose pulping machine, belonging to the field of raw material processing; the utility model discloses a: a housing and a cylindrical grinding cylinder; the shell is of a vertically arranged round tube-shaped structure with two open ends, the bottom end of the shell is provided with a feed inlet, and the top end of the shell is provided with a discharge outlet; the grinding column is a rotatable cylindrical structure and is sleeved in the shell; a gap is formed between the outer side surface of the grinding column and the inner wall of the shell; the feed inlet is provided with a spiral conveying pipe which is communicated with the gap; and the spiral conveying pipe corresponds to the bottom end of the grinding column; a plurality of ultrasonic transducers are arranged on the shell; the ultrasonic transducers are arranged on the inner wall of the shell and face the grinding column. The multipurpose pulping machine of the utility model grinds the materials through the clearance between the grinding column and the shell; and the ultrasonic wave action is added in the grinding process, so that the grinding efficiency is improved, and the technical problem that high-concentration slurry is easy to scale is effectively solved.

Description

Multipurpose pulping machine

Technical Field

The utility model relates to a processing equipment manufacturing technology especially relates to a multipurpose fiberizer, belongs to pulping equipment and makes technical field.

Background

The modern paper making procedure can be divided into main steps of pulping, modulation, papermaking, processing and the like, wherein pulping is the first step of papermaking, generally, methods for converting wood into paper pulp comprise three methods, namely a mechanical pulping method, a chemical pulping method and a semi-chemical pulping method, wherein a pulping machine can be widely applied to the chemical pulping method and the semi-chemical pulping method, but due to the difference of pulping raw materials, the pulp which is crushed in the early stage often contains blocky pulp with larger volume, the pulp enters the pulping machine and is bridged to form larger pulp masses, not only the pulp is difficult to enter a feeding screw, but also the screw cannot normally rotate due to the blockage among the screws, so that the screw is damaged and the production is stopped, and the large loss is brought to enterprises, and the problem is avoided by only increasing the blocky pulp which is subjected to water flushing and thin bridging in the prior art, and the concentration of the pulp is greatly reduced, and becomes a low concentration slurry, so that the production efficiency cannot be improved.

In addition, in the processes of cleaning, reacting and milling, the medicament reacts with the biomass raw material to easily generate a scaling phenomenon; however, the scaling phenomenon is different according to different raw materials, production processes and products, the scaling problem of producing the softwood pulp is serious, and the scaling mainly occurs in a sodium silicate storage tank and a conveying pipeline thereof, a bleaching liquid preparation device and a conveying pipeline thereof, a disc mill, a slurry mixing device, a bleaching pulp dewatering device and the like.

Investigation of the cause of scale formation shows that sodium silicate and calcium silicate precipitates form a scale layer on the metal surface. After fouling, the milling and heat transfer effects of the equipment decrease, which in turn leads to an increase in the dosage.

Therefore, there is a need in the art for a versatile refiner that avoids scaling and is suitable for high consistency slurries.

SUMMERY OF THE UTILITY MODEL

The utility model provides a multipurpose fiberizer to solve among the prior art fiberizer and be suitable for the concentration lower, and the technical problem of easy scale deposit.

The utility model discloses a multipurpose fiberizer, include: a housing and a cylindrical grinding cylinder;

the shell is of a vertically arranged round tube-shaped structure with two open ends, the bottom end of the shell is provided with a feed inlet, and the top end of the shell is provided with a discharge outlet; the grinding column is a rotatable cylindrical structure and is sleeved in the shell; a gap is formed between the outer side surface of the grinding column and the inner wall of the shell;

the feed inlet is provided with a spiral conveying pipe which is communicated with the gap; and the spiral conveying pipe corresponds to the bottom end of the grinding column;

a plurality of ultrasonic transducers are arranged on the shell; the ultrasonic transducers are arranged on the inner wall of the shell and face the grinding column.

The multipurpose pulping machine is characterized in that the bottom end of the grinding column is provided with a stirring rod, and the stirring rod is provided with a plurality of flow guide holes.

The multipurpose pulping machine is characterized in that the discharge hole is provided with a discharge pipe; the discharge pipe is horizontally arranged, and an exhaust valve is arranged on the discharge pipe.

The multipurpose refiner as described above, wherein the top end of the grinding cylinder is provided with a sealing disc; the sealing disc is covered on the top of the shell;

the edge of sealed dish is provided with the sealing ring, sealed dish passes through the sealing ring cover is established the outside of shell.

A multi-purpose refiner as claimed in above, wherein the distance between the refiner columns and the inner wall of the casing is 1.5-2.7 mm.

A multi-purpose refiner as claimed in above, wherein said refiner further comprises: a storage bin; the bin is connected with the spiral conveying pipe; the bin is located below the shell, and the horizontal height of the bin is lower than that of the grinding column.

The multipurpose pulping machine is characterized in that the side surface of the grinding column is provided with a plurality of flow guide grooves.

A multipurpose refiner as claimed in above, wherein the top of the refiner post is provided with a coupling.

The multipurpose pulping machine of the utility model grinds the materials through the clearance between the grinding column and the shell; and the ultrasonic wave action is added in the grinding process, so that the grinding efficiency is improved, and the technical problem that high-concentration slurry is easy to scale is effectively solved.

Drawings

Fig. 1 is a structural view of a multipurpose refiner according to an embodiment of the present invention.

Detailed Description

As shown in FIG. 1; the multipurpose refiner of this embodiment includes: a shell 1 and a cylindrical grinding column 2; the side and end faces of the grinding column 2 are grinding faces.

The shell 1 is of a vertically arranged round tube-shaped structure with two open ends, the bottom end of the shell is provided with a feed inlet, and the top end of the shell is provided with a discharge outlet; the grinding column 2 is a rotatable cylindrical structure and is sleeved in the shell 1; the cylindrical structure is provided with a rotating shaft which is vertically arranged and is perpendicular to the horizontal plane, and the grinding column rotates around the rotating shaft.

In general, a discharge pipe 11 is arranged on the discharge hole; the tapping pipe 11 is arranged horizontally, and a venting valve 15 is attached to the tapping pipe 11. The air discharge valve 15 is used to discharge air generated during the milling process, thereby avoiding problems of malfunction and insufficient grinding due to excessive air accumulation.

A gap is reserved between the outer side surface of the grinding column 2 and the inner wall of the shell 1; the gap is used for grinding the slurry; the gap is a grinding cavity for grinding the slurry.

The feeding hole is provided with a spiral conveying pipe 3, the spiral conveying pipe 3 is communicated with the gap, and the conveying spiral pipe is used for inputting the slurry into the gap to be milled; and the spiral conveying pipe 3 corresponds to the bottom end of the grinding column 2; the slurry is led into the end face of the grinding column, and the slurry enters the gap for grinding through the dispersion and stirring action of the end face. The bottom end of the spiral conveying pipe 3 is provided with a conveying motor 30, and the conveying motor 30 is used for driving a conveying spiral in the spiral conveying pipe 3.

A plurality of ultrasonic transducers 10 are arranged on the shell 1; a plurality of ultrasonic transducers 10 are mounted on the inner wall of the housing 1 and all face the grinding column 2.

The ultrasonic transducer utilizes the strong cavitation effect, mechanical vibration, disturbance effect, high acceleration, emulsification, diffusion, crushing, stirring and other multi-stage effects generated by ultrasonic radiation pressure to increase the motion frequency and speed of substance molecules, thereby fibrillation is realized among the fine fiber bundles in the slurry, and the beating degree is greatly improved.

The ultrasonic transducer is used for descaling, and is mainly used for treating fluid by utilizing an ultrasonic strong sound field, so that the physical form and chemical properties of a descaling substance in the fluid are changed in a series under the action of the ultrasonic field, and the descaling substance is dispersed, crushed, loosened and is not easy to adhere to a pipe wall to form scale, thereby achieving the purpose of scale prevention.

Further, the bottom end of the grinding column 2 is provided with a stirring rod 20, and a plurality of flow guide holes are formed in the stirring rod 20. The stirring rod 20 is used for dispersing and uniformly stirring the entering high-concentration slurry, so that the slurry is prevented from being adhered to the end surface of the grinding column 2 to block the pulping machine.

It should be noted that, the bottom end of the casing 1 is also provided with a plurality of ultrasonic transducers, and the ultrasonic transducers correspond to the stirring rods, so as to avoid the scaling of the stirring rods and further improve the pulping efficiency and the pulping quality.

The multipurpose pulping machine of the utility model grinds the materials through the clearance between the grinding column and the shell; and the ultrasonic wave action is added in the grinding process, so that the grinding efficiency is improved, and the technical problem that high-concentration slurry is easy to scale is effectively solved. And the high-concentration slurry is forcibly pressed into a grinding cavity of the pulping machine through a spiral conveying pipe, and the slurry continuously rises and is discharged from a discharge port at the top of the shell in the grinding process; the feeding from bottom to top avoids the difficult problem that the slurry is difficult to start after stopping, and the slurry can stay in the grinding chamber for a longer time.

The multipurpose refiner of the present embodiment, wherein the top end of the grinding cylinder 2 is provided with a sealing disc 21; the sealing disc 21 is covered on the top of the shell 1; the seal disk 21 is typically fixed to the top of the grinding cylinder and rotates with the grinding cylinder. A seal gasket and thrust bearing are typically disposed between the seal plate and the housing.

The edge of sealed dish 21 is provided with sealing ring 23, sealed dish 21 passes through sealing ring 23 cover is established the outside of shell 1 to guarantee that the thick liquids in the clearance do not leak outward.

Preferably, a plurality of diversion trenches are formed in the side surface of the grinding column 2, so that the ground slurry can gradually rise to the discharge pipe along the diversion trenches in the grinding process.

Normally, a coupling 22 is arranged at the top of the grinding column 2, and the coupling 22 is used for connecting with a driving motor; the driving motor is used for driving the grinding column to rotate.

In this embodiment, it is preferable that the distance between the grinding cylinder 2 and the inner wall of the housing 1 is 1.5 to 2.7mm, so as to more effectively exert the mechanical vibration and cavitation of the ultrasonic wave.

The multipurpose refiner of this embodiment still includes: a stock bin 4; the bin 4 is connected with the spiral conveying pipe 3; the bin 4 is positioned below the shell 1, and the horizontal height of the bin 4 is lower than that of the grinding column 2. Therefore, the screw conveying pipe can extrude partial water in the process of conveying the pulp upwards, and the pulp grinding efficiency is further improved.

Additionally, this the utility model discloses a multipurpose fiberizer cost of manufacture is not high, and the design is exquisite, and compact structure is firm stable, is difficult for the scale deposit, installs and removes simply, and convenient operation is applicable to the high concentration thick liquids of various wood pulp or straw pulp and mills.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A multi-purpose refiner, characterized in that it comprises: a housing and a cylindrical grinding cylinder;

2. The multipurpose refiner of claim 1 wherein the bottom end of the refiner column is provided with a stirring rod, and the stirring rod is provided with a plurality of flow guide holes.

3. The multipurpose refiner of claim 1 wherein said outlet port has a discharge pipe mounted thereon; the discharge pipe is horizontally arranged, and an exhaust valve is arranged on the discharge pipe.

4. A multipurpose refiner as claimed in claim 1, characterized in that the top end of the refining cylinder is provided with a sealing disc; the sealing disc is covered on the top of the shell;

5. A multipurpose refiner as claimed in any one of claims 1 to 4, characterized in that the distance between the refining cylinder and the inner wall of the casing is 1.5-2.7 mm.

6. A multi-purpose refiner as claimed in any one of claims 1 to 4, characterized in that said refiner further comprises: a storage bin; the bin is connected with the spiral conveying pipe; the bin is located below the shell, and the horizontal height of the bin is lower than that of the grinding column.

7. A multi-purpose refiner as claimed in any one of claims 1 to 4, wherein a plurality of channels are formed on the side of the refining column.

8. A versatile refiner as claimed in any one of claims 1-4, characterized in that the top of the refiner post is provided with a coupling.