CN112476689A

CN112476689A - Use method for realizing production of high-quality fibers by utilizing high-precision defibrator

Info

Publication number: CN112476689A
Application number: CN202011242908.5A
Authority: CN
Inventors: 李现超; 于少强; 李显; 李强; 王川; 王磊
Original assignee: Heze Ningfeng Wood Industry Co Ltd
Current assignee: Heze Ningfeng Wood Industry Co Ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-03-12
Anticipated expiration: 2040-11-10
Also published as: WO2022099443A1; CN112476689B

Abstract

The invention relates to a using method for producing high-quality fibers by using a high-precision defibrator, which comprises a grinder shell A and a grinder shell B which are connected together, wherein the grinder shell A and the grinder shell B are combined to form a defibrator cavity, a static grinding disc and a movable grinding disc are arranged in the defibrator cavity, the inner side surfaces of the static grinding disc and the movable grinding disc are grinding surfaces which are matched with each other, and an axial fine adjustment mechanism is arranged on a grinding shaft and used for adjusting a gap between the static grinding disc and the movable grinding disc so as to enable the specification of the ground fibers to meet the requirements and realize the production of the high-quality fibers. The invention has the following beneficial effects: simple mechanical structure, low price, stable operation, no vibration, low motor power, high crushing and decomposing efficiency and the like.

Description

Use method for realizing production of high-quality fibers by utilizing high-precision defibrator

Technical Field

The invention relates to a using method for producing high-quality fibers by using a high-precision defibrator, belonging to the technical field of wood processing.

Background

Wood is a composite material and also a very complex living organism, and all the elongated wooden cells excluding ducts and parenchyma are collectively called fibers. The fiber length is usually between 2-5 mm, the shortest one is about 1mm, and the longest one is 7.438 mm. The average chordwise diameter of the fibers is 0.02-0.04 mm. The minimum size is 0.01mm, and the maximum size is 0.08 mm.

The fiber form greatly affects the medium density fiberboard, the fiber is complete, the slenderness ratio is large, the flexibility and the interweaving performance are good, and the quality of the board is high. Defibration by hot-milling is a mechanical process in which fibers are obtained after heat is applied to weaken the strong bonding of the fibers. The fiber separation is a very complicated physical mechanical and chemical conversion process, i.e. the cooked fiber raw material is forced to be sent into a grinding chamber with high temperature, high humidity and high pressure to be pressed and kneaded between two grinding discs, so that the fiber raw material is decomposed under the action of repeated external forces such as compression, stretching, shearing, torsion, impact, friction, hydrolysis and the like.

The defibrator consists essentially of a feeder, a preheating and boiling device, a grinding device and a discharge device, wherein the grinding device is the main body of the defibrator and has direct influence on the quality of the defibrator. The existing grinding device of the defibrator mainly comprises a grinding head shell, a sealing mechanism, a static grinding sheet, a dynamic grinding sheet, a grinding shaft system and the like. The static grinding disc is fixed on the grinding head shell, and the movable grinding disc is arranged at the end part of the grinding shaft and moves along with the grinding shaft. The existing grinding device of the defibrator lacks an axial fine adjustment mechanism, needs to be disassembled to adjust the gap between the static grinding disc and the movable grinding disc, and reduces the production efficiency. In order to improve the defects, the thermofiner with the axial fine adjustment mechanism is provided, and the axial fine adjustment mechanism is used for adjusting the gap between the static grinding disc and the movable grinding disc so as to enable the specification of the ground fiber to meet the requirements and realize the production of high-quality fiber.

Disclosure of Invention

According to the defects in the prior art, the technical problems to be solved by the invention are as follows: in order to solve one of the problems, a using method for producing high-quality fibers by using a high-precision hot mill is provided.

The invention relates to a using method for producing high-quality fibers by using a high-precision defibrator, which is characterized by comprising the following steps: the high-precision defibrator comprises a grinder shell A and a grinder shell B which are connected together, wherein the grinder shell A and the grinder shell B are combined to form a defibrator cavity, a static grinding disc and a dynamic grinding disc are arranged in the defibrator cavity, the inner side surfaces of the static grinding disc and the dynamic grinding disc are grinding surfaces which are matched with each other, a feeding pipe is arranged on the non-grinding surface of the static grinding disc, the other end of the feeding pipe penetrates through the grinder shell A and extends to the outer side of the grinder shell A, a grinding shaft is arranged on the non-grinding surface of the dynamic grinding disc, the other end of the grinding shaft penetrates through the grinder shell B and extends to the outer side of the grinder shell B, the outer wall of the grinder shell B is provided with a grinding shaft sealing tailstock, the middle part of the grinding shaft is connected with the grinder shell B through the grinding shaft sealing tailstock, and the, the non-grinding surface of the static grinding disc is provided with a flange disc, the static grinding disc is arranged on a grinder shell A through the flange disc, the end surface of the flange disc is integrally provided with a feeding pipe, the inner hole of the feeding pipe is the same as the inner hole of the flange disc, the other end surface of the flange disc is provided with an annular boss, the center of the static grinding disc is provided with a center hole, the annular boss is embedded into the center hole, the flange disc is positioned between the grinder shell A and the static grinding disc, the grinder shell A, the static grinding disc and the flange disc are connected together through fastening bolts, two sides of the outer edge of the flange disc are provided with sealing rings, a grinding shaft is provided with an axial fine adjustment mechanism, and the axial fine adjustment mechanism is used for adjusting the gap between the static grinding disc and the dynamic grinding disc so;

preferably, the high-precision hot mill is used by a method comprising the following steps: the fiber raw material after being cooked is forcibly sent into a grinding chamber with high temperature, high humidity and high pressure through a feeding pipe to be pressed and kneaded between two grinding discs, so that the fiber raw material is decomposed under the action of repeated external forces such as compression, stretching, shearing, torsion, impact, friction, hydrolysis and the like, and separated fibers are discharged through a discharging pipe.

Preferably, the grinder housing A and the grinder housing B are connected together through high-strength bolts, and sealing rings are arranged on matching surfaces of the grinder housing A and the grinder housing B.

Preferably, the axial fine-tuning has rotatory shell body, rotatory shell body and the coaxial setting of grinding axle, thrust bearing A and thrust bearing B are installed respectively to the front end and the tail end of rotatory shell body, thrust bearing A and thrust bearing B's external diameter is installed on the inner wall of grinding the sealed tailstock of axle, thrust bearing A's left side has front end opposite sex sealing washer, thrust bearing B's right side has rear end opposite sex sealing washer.

Preferably, the axial fine-tuning includes rotatory shell body, the one end shutoff of rotatory shell body, other end opening, tail end shutoff board is installed to the open end, the both ends of grinding the axle run through respectively shutoff end and tail end shutoff board, install preceding rubber seal seat, back rubber seal seat and front end spherical concave surface on the grinding spindle in the rotatory shell body, the one end of preceding rubber seal seat supports and leans on the inner wall of rotatory shell body shutoff end, the other end of preceding rubber seal seat has front end spherical concave surface, the one end of back rubber seal seat supports and leans on the inner wall of tail end shutoff board, the other end of tail end shutoff board has rear end spherical concave surface, and the spheroidal both ends in middle part imbed respectively in front end spherical concave surface and the rear end spherical concave surface.

Preferably, annular extrusion deformation grooves are formed in the left side face of the front rubber sealing seat, the right side face of the rear rubber sealing seat, the front spherical concave face and the rear spherical concave face.

Preferably, the middle sphere comprises a ball half body A and a ball half body B which are matched with each other, the ball half body A and the ball half body B are connected together through a half body connecting bolt to be spliced into a sphere, the grinding shaft penetrates through the ball half body A and the ball half body B, a rubber sleeve mounting cavity A and a rubber sleeve mounting cavity B are respectively formed in the matching surfaces of the ball half body A and the ball half body B, a rubber sleeve A and a rubber sleeve B are respectively installed in the rubber sleeve mounting cavity A and the rubber sleeve mounting cavity B, and the inner diameter of the rubber sleeve A and the inner diameter of the rubber sleeve B are sleeved on the grinding shaft.

Preferably, the rubber sleeve A and the rubber sleeve B both comprise a rigid shaft sleeve body and an elastic sleeve sleeved outside the rigid shaft sleeve body, and the elastic sleeve is made of rubber; the outer wall of the elastic sleeve is evenly provided with grooves which are arranged along the axial direction of the elastic sleeve, the rigid shaft sleeve body is in interference fit with the grinding shaft, and the elastic sleeve is in interference fit with the rubber sleeve installation cavity A or the rubber sleeve installation cavity B.

Preferably, the left side of rubber sleeve A and the right side of rubber sleeve B are installed respectively and are transferred the crack backing plate, and rubber sleeve A, rubber sleeve B and transfer the crack backing plate and fill the installation cavity that rubber sleeve installation cavity A and rubber sleeve installation cavity B combined into.

Preferably, the rotary outer shell, the tail end plugging plate and the assembling hole of the grinding shaft are in small clearance fit.

Preferably, the pressure used for cooking softening and hot grinding is 0.75MPa-0.85MPa, the temperature is 100 ℃ -180 ℃ saturated steam cooking and hot grinding, the hot grinding of the hot grinding machine is high-speed hot grinding, and the rotating speed of the hot grinding machine is controlled at 1200-.

Preferably, the front spherical concave surface and the ball half body A are vulcanized together, and the front rubber sealing seat and the rotating outer shell are bonded together.

Compared with the prior art, the invention has the following beneficial effects:

the invention relates to a using method for producing high-quality fibers by utilizing a high-precision defibrator, which is characterized in that a grinding shaft is matched with a tail end adjusting nut, the grinding shaft overcomes the resistance of an axial fine adjustment mechanism, the tail end adjusting nut pulls the grinding shaft to move rightwards so as to reduce the pressure in a grinding disc gap, conversely, the axial fine adjustment mechanism resets so as to increase the pressure in the grinding disc gap and improve the grinding strength, and the axial fine adjustment mechanism is used for adjusting the gap between a static grinding disc and a movable grinding disc so as to enable the specification of the ground fibers to meet the requirement and realize the production of the high-quality fibers.

Simple mechanical structure, low price, stable operation, no vibration, low motor power, high crushing and decomposing efficiency and the like.

Through the setting of the axial fine adjustment mechanism, the grinding disc gap can fluctuate in a small range according to the amount of materials, so that the phenomenon of serious blockage is avoided, and the abrasion resistance and the impact resistance are high.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a first schematic structural diagram of an axial fine adjustment mechanism;

FIG. 3 is a second schematic structural view of the axial fine adjustment mechanism;

in the figure: 1. the grinding device comprises a grinding device shell A2, a grinding device shell B3, a feeding pipe 4, a static grinding sheet 5, a movable grinding sheet 6, a grinding shaft 7, a grinding shaft sealing tailstock 8, a discharging pipe 9, a flange plate 10, an axial fine adjustment mechanism 10.1, a rotary shell body 10.2, a tail end plugging plate 10.3, a front rubber sealing seat 10.4, a rear rubber sealing seat 10.5, a front end spherical concave surface 10.6, a rear end spherical concave surface 10.7, a middle spherical body 10.8, a ring-mounted extrusion deformation groove 10.9, a tail end adjusting nut 11, a thrust bearing A12, a thrust bearing B13, a front end anisotropic sealing ring 14, a rear end anisotropic sealing ring 15, a ball half body A16, a ball half body B17, a half body connecting bolt 18, a rubber sleeve mounting cavity A19, a rubber sleeve mounting cavity B20, a rubber sleeve A21 and a rubber sleeve B.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

the present invention is further illustrated by the following specific examples, which are not intended to limit the scope of the invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Examples

The use method of the high-precision defibrator comprises a grinder shell A1 and a grinder shell B2 which are connected together, the grinder shell A1 and the grinder shell B2 are combined to form a grinding chamber, a static grinding plate 4 and a dynamic grinding plate 5 are arranged in the grinding chamber, the inner side surfaces of the static grinding plate 4 and the dynamic grinding plate 5 are mutually matched grinding surfaces, a feeding pipe 3 is arranged on the non-grinding surface of the static grinding plate 4, the other end of the feeding pipe 3 penetrates through the grinder shell A1 and extends to the outer side of the grinder shell A1, a grinding shaft 6 is arranged on the non-grinding surface of the dynamic grinding plate 5, the other end of the grinding shaft 6 penetrates through the grinder shell B2 and extends to the outer side of the grinder shell B2, the outer wall of the grinder shell B2 is provided with a grinding shaft sealing 7, the middle part of the grinding shaft 6 is connected with a grinder shell B2 through a grinding shaft sealing tailstock 7, the bottom of the grinder shell B2 is provided with a discharge pipe 8, the non-grinding surface of the static grinding disc 4 is provided with a flange 9, the static grinding disc 4 is arranged on a grinder shell A1 through the flange 9, the end surface of the flange plate 9 is integrally formed with a feed pipe 3, the inner hole of the feed pipe 3 is the same as the inner hole of the flange plate 9, the other end surface of the flange plate 9 is provided with an annular boss, the center of the static grinding sheet 4 is provided with a central hole 4.1, the annular boss is embedded in the central hole 4.1, the flange 9 is positioned between the grinder shell A1 and the static grinding disc 4, the grinding device comprises a grinding device shell A1, a static grinding disc 4 and a flange plate 9 which are connected together through fastening bolts, wherein sealing rings are arranged on two sides of the outer edge of the flange plate 9, and an axial fine adjustment mechanism 10 is arranged on a grinding shaft 6;

the use method of the high-precision defibrator comprises the following steps: the fiber raw material after being cooked is forcibly sent into the two grinding discs in the grinding chamber with high temperature, high humidity and high pressure through the feeding pipe 3 to be pressed and kneaded, so that the fiber raw material is decomposed under the repeated external force action of compression, stretching, shearing, torsion, impact, friction, hydrolysis and the like, and the separated fiber is discharged through the discharging pipe 8.

In this embodiment, the grinder housing a1 and the grinder housing B2 are connected together by high-strength bolts, and sealing rings are arranged on the matching surfaces of the grinder housing a1 and the grinder housing B2; the axial fine adjustment mechanism 10 is provided with a rotary outer shell 10.1, the rotary outer shell 10.1 and the grinding shaft 6 are coaxially arranged, the front end and the tail end of the rotary outer shell 10.1 are respectively provided with a thrust bearing A11 and a thrust bearing B12, the outer diameters of the thrust bearing A11 and the thrust bearing B12 are arranged on the inner wall of the grinding shaft sealing tailstock 7, the left side of the thrust bearing A11 is provided with a front end anisotropic sealing ring 13, and the right side of the thrust bearing B12 is provided with a rear end anisotropic sealing ring 14; the axial fine adjustment mechanism 10 comprises a rotary outer shell 10.1, one end of the rotary outer shell 10.1 is blocked, the other end of the rotary outer shell is opened, a tail end blocking plate 10.2 is installed at the opening end, two ends of the grinding shaft 6 respectively penetrate through the blocking end and the tail end blocking plate 10.2, a front rubber sealing seat 10.3, a rear rubber sealing seat 10.4 and a front end spherical concave surface 10.5 are installed on the grinding shaft 6 in the rotary outer shell 10.1, one end of the front rubber sealing seat 10.3 abuts against the inner wall of the blocking end of the rotary outer shell 10.1, the other end of the front rubber sealing seat 10.3 is provided with a front end spherical concave surface 10.5, one end of the rear rubber sealing seat 10.4 abuts against the inner wall of the tail end blocking plate 10.2, the other end of the tail end blocking plate 10.2 is provided with a rear end spherical concave surface 10.6, and two ends of a middle spherical ball 10.7 are respectively embedded into the front end spherical concave surface 10.5 and the rear end spherical concave surface 10.6; the left side surface of the front rubber sealing seat 10.3, the right side surface of the rear rubber sealing seat 10.4, the front spherical concave surface 10.5 and the rear spherical concave surface 10.6 are all provided with annular extrusion deformation grooves 10.8; the middle sphere 10.7 comprises a ball half body A15 and a ball half body B16 which are matched with each other, the ball half body A15 and the ball half body B16 are connected together through a half body connecting bolt 17 to be spliced into a sphere, the grinding shaft 6 penetrates through the ball half body A15 and the ball half body B16, a rubber sleeve mounting cavity A18 and a rubber sleeve mounting cavity B19 are respectively arranged on matching surfaces of the ball half body A15 and the ball half body B16, a rubber sleeve A20 and a rubber sleeve B21 are respectively arranged in the rubber sleeve mounting cavity A18 and the rubber sleeve mounting cavity B19, and the rubber sleeve A20 and the rubber sleeve B21 are sleeved on the inner diameter grinding shaft 6; the rubber sleeve A20 and the rubber sleeve B21 both comprise a rigid shaft sleeve body and an elastic sleeve sleeved outside the rigid shaft sleeve body, and the elastic sleeve is made of rubber; grooves which are arranged along the axial direction of the elastic sleeve are uniformly formed in the outer wall of the elastic sleeve, the rigid shaft sleeve body is in interference fit with the grinding shaft 6, and the elastic sleeve is in interference fit with the rubber sleeve mounting cavity A18 or the rubber sleeve mounting cavity B19; gap adjusting base plates are respectively arranged on the left side of the rubber sleeve A20 and the right side of the rubber sleeve B21, and the rubber sleeve A20, the rubber sleeve B21 and the gap adjusting base plates fill a mounting cavity formed by combining a rubber sleeve mounting cavity A18 and a rubber sleeve mounting cavity B19; the rotary outer shell 10.1, the tail end plugging plate 10.2 and the assembling hole of the grinding shaft 6 are in small clearance fit; the pressure of the steam boiling softening and the hot grinding is 0.75Mpa-0.85Mpa, the temperature is 100 ℃ to 180 ℃ of saturated steam boiling and hot grinding, the hot grinding of the hot grinding machine adopts high-speed hot grinding, and the rotating speed of the hot grinding machine is controlled at 1200-1600 rmin.

The working principle of the invention is as follows: through grinding axle and the cooperation of tail end adjusting nut, grind the axle and overcome the resistance of axial fine-tuning, tail end adjusting nut draws grinding axle and moves right to reduce the pressure in the mill clearance, on the contrary, the axial fine-tuning resets, with the pressure in the increase mill clearance, improves and grinds intensity, and the axial fine-tuning is used for adjusting quiet abrasive disc and moves the clearance between the abrasive disc, so that the fibrous specification that makes the mill out meets the requirements, realizes producing high quality fibre.

The specific adjusting process comprises the following steps: the rear spherical concave surface 10.6 is matched with the thread on the grinding shaft 6, the tail end adjusting nut 10.9 is rotated by means of external force, the contact surface of the grinding shaft 6 with the rubber sleeve A20 and the contact surface of the rubber sleeve B21 are not moved, the grinding shaft 6 pulls the rubber sleeve A20 and the rubber sleeve B21 and extrudes the rear rubber sealing seat 10.4 through the ball half body B16, after the rear rubber sealing seat 10.4 deforms, the grinding shaft 6 moves towards the right side relative to the tail end plugging plate 10.2, the grinding shaft overcomes the resistance of the axial fine adjustment mechanism, and the tail end adjusting nut pulls the grinding shaft to move towards the right side so as to reduce the pressure in the grinding disc gap.

On the contrary, the axial fine adjustment mechanism automatically resets to increase the pressure in the grinding disc gap and improve the grinding strength, and the axial fine adjustment mechanism is used for adjusting the gap between the static grinding disc and the movable grinding disc, so that the specification of the ground fiber meets the requirement, and the production of high-quality fiber is realized.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A use method for realizing production of high-quality fibers by using a high-precision defibrator is characterized by comprising the following steps: the high-precision defibrator comprises a grinder shell A (1) and a grinder shell B (2) which are connected together, wherein the grinder shell A (1) and the grinder shell B (2) are combined to form a defibrator cavity, a static grinding disc (4) and a dynamic grinding disc (5) are arranged in the defibrator cavity, the inner side surfaces of the static grinding disc (4) and the dynamic grinding disc (5) are grinding surfaces which are matched with each other, a feeding pipe (3) is arranged on the non-grinding surface of the static grinding disc (4), the other end of the feeding pipe (3) penetrates through the grinder shell A (1) and extends to the outer side of the grinder shell A (1), a grinding shaft (6) is arranged on the non-grinding surface of the dynamic grinding disc (5), the other end of the grinding shaft (6) penetrates through the grinder shell B (2) and extends to the outer side of the grinder shell B (2), and the outer wall of the grinder shell B (2) is provided with a grinding shaft sealing, the middle part of grinding shaft (6) is connected with grinder shell B (2) through grinding shaft seal tailstock (7), the bottom of grinder shell B (2) has discharging pipe (8), install ring flange (9) on the non-abrasive surface of quiet abrasive disc (4), quiet abrasive disc (4) are installed on grinder shell A (1) through ring flange (9), integrated into one piece has inlet pipe (3) on the terminal surface of ring flange (9), the hole of inlet pipe (3) is the same with ring flange (9) hole, another terminal surface of ring flange (9) has cyclic annular boss, the center of quiet abrasive disc (4) has centre bore (4.1), among cyclic annular boss embedding centre bore (4.1), ring flange (9) are located between grinder shell A (1) and quiet abrasive disc (4), through fastening bolt with grinder shell A (1), The static grinding disc (4) and the flange plate (9) are connected together, sealing rings are arranged on two sides of the outer edge of the flange plate (9), an axial fine adjustment mechanism (10) is arranged on the grinding shaft (6), and the axial fine adjustment mechanism is used for adjusting a gap between the static grinding disc and the movable grinding disc;

the use method of the high-precision defibrator comprises the following steps: the fiber raw material after being cooked is forcibly sent into the two grinding discs in the grinding chamber with high temperature, high humidity and high pressure through the feeding pipe (3) to be pressed and kneaded, so that the fiber raw material is decomposed under the action of repeated external force such as compression, stretching, shearing, torsion, impact, friction, hydrolysis and the like, and the separated fiber is discharged through the discharging pipe (8).

2. The use of a high precision defibrator according to claim 1 for the production of high quality fibers, characterized by: the grinder shell A (1) and the grinder shell B (2) are connected together through high-strength bolts, and sealing rings are arranged on matching surfaces of the grinder shell A (1) and the grinder shell B (2).

3. The use of a high precision defibrator according to claim 2 for the production of high quality fibers, characterized in that: axial fine-tuning (10) has rotatory shell body (10.1), rotatory shell body (10.1) and grinding axle (6) coaxial setting, thrust bearing A (11) and thrust bearing B (12) are installed respectively to the front end and the tail end of rotatory shell body (10.1), install on the inner wall of grinding the sealed tailstock (7) of axle to the external diameter of thrust bearing A (11) and thrust bearing B (12), the left side of thrust bearing A (11) has front end opposite sex sealing washer (13), the right side of thrust bearing B (12) has rear end opposite sex sealing washer (14).

4. The use of a high precision defibrator according to claim 3 for the production of high quality fibers, characterized by: the axial fine adjustment mechanism (10) comprises a rotary outer shell (10.1), one end of the rotary outer shell (10.1) is blocked, the other end of the rotary outer shell is open, a tail end blocking plate (10.2) is installed at the open end, the two ends of the grinding shaft (6) respectively penetrate through the blocking end and the tail end blocking plate (10.2), a front rubber sealing seat (10.3), a rear rubber sealing seat (10.4) and a front end spherical concave surface (10.5) are installed on the grinding shaft (6) in the rotary outer shell (10.1), one end of the front rubber sealing seat (10.3) is abutted against the inner wall of the blocking end of the rotary outer shell (10.1), the other end of the front rubber sealing seat (10.3) is provided with a front end spherical concave surface (10.5), one end of the rear rubber sealing seat (10.4) is abutted against the inner wall of the tail end blocking plate (10.2), and the other end of the tail end blocking plate (10.2) is provided with a rear end spherical concave surface (10.6), two ends of the middle sphere (10.7) are respectively embedded into the front spherical concave surface (10.5) and the rear spherical concave surface (10.6).

5. The use of a high precision defibrator according to claim 4 for the production of high quality fibers, characterized by: and annular extrusion deformation grooves (10.8) are formed in the left side surface of the front rubber sealing seat (10.3), the right side surface of the rear rubber sealing seat (10.4), the front spherical concave surface (10.5) and the rear spherical concave surface (10.6).

6. The use of a high precision defibrator according to claim 5 for the production of high quality fibers, characterized by: the middle sphere (10.7) comprises a ball half body A (15) and a ball half body B (16) which are matched with each other, the ball half body A (15) and the ball half body B (16) are connected together through a half body connecting bolt (17) to form a ball shape in a splicing mode, the grinding shaft (6) penetrates through the ball half body A (15) and the ball half body B (16), a rubber sleeve mounting cavity A (18) and a rubber sleeve mounting cavity B (19) are respectively formed in the matching surfaces of the ball half body A (15) and the ball half body B (16), a rubber sleeve A (20) and a rubber sleeve B (21) are respectively mounted in the rubber sleeve mounting cavity A (18) and the rubber sleeve mounting cavity B (19), and the inner diameter of the rubber sleeve A (20) and the inner diameter of the rubber sleeve B (21) are sleeved on the grinding shaft (6).

7. The use of a high precision defibrator according to claim 6 for the production of high quality fibers, characterized by: the rubber sleeve A (20) and the rubber sleeve B (21) both comprise a rigid shaft sleeve body and an elastic sleeve sleeved outside the rigid shaft sleeve body, and the elastic sleeve is made of rubber; the outer wall of the elastic sleeve is evenly provided with grooves which are arranged along the axial direction of the elastic sleeve, the rigid shaft sleeve body is in interference fit with the grinding shaft (6), and the elastic sleeve is in interference fit with the rubber sleeve installation cavity A (18) or the rubber sleeve installation cavity B (19).

8. The use of a high precision defibrator according to claim 7 for the production of high quality fibers, characterized by: the left side of rubber sleeve A (20) and the right side of rubber sleeve B (21) are installed respectively and are transferred the clearance backing plate, and rubber sleeve A (20), rubber sleeve B (21) and transfer the clearance backing plate and fill the installation cavity that rubber sleeve installation cavity A (18) and rubber sleeve installation cavity B (19) make up.

9. The use of a high precision defibrator according to claim 8 for the production of high quality fibers, characterized by: and small clearance fit is respectively formed among the rotary outer shell (10.1), the tail end plugging plate (10.2) and the assembling holes of the grinding shaft (6).

10. The use of a high precision defibrator according to claim 9 for the production of high quality fibers, characterized by: the pressure of the steam boiling softening and the hot grinding is 0.75Mpa-0.85Mpa, the temperature is 100 ℃ to 180 ℃ of saturated steam boiling and hot grinding, the hot grinding of the hot grinding machine adopts high-speed hot grinding, and the rotating speed of the hot grinding machine is controlled at 1200-1600 r/min.