CN215628996U - Rotor disc of double-disc pulping machine, transmission assembly and double-disc pulping machine - Google Patents
Rotor disc of double-disc pulping machine, transmission assembly and double-disc pulping machine Download PDFInfo
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- CN215628996U CN215628996U CN202122120198.5U CN202122120198U CN215628996U CN 215628996 U CN215628996 U CN 215628996U CN 202122120198 U CN202122120198 U CN 202122120198U CN 215628996 U CN215628996 U CN 215628996U
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Abstract
The application belongs to the technical field of pulping equipment, and particularly relates to a rotor disc of a double-disc pulping machine, wherein the rotor disc is provided with a mounting hole for connecting a transmission shaft, a communication hole surrounding the outer side of the mounting hole, and a grinding disc mounting area positioned on the outer side of the mounting hole; the mounting hole is matched with the transmission shaft, and the area ratio of the grinding sheet mounting area to the communication hole is greater than or equal to 7 and less than or equal to 10. In this application, the mounting hole and the transmission shaft adaptation of rotor dish, the rotor dish passes through the mounting hole and directly is connected with the transmission shaft, compare in the rotor dish through spline housing connection transmission shaft, the space of installation spline housing has been saved to the rotor dish of this application for the area increase of the intercommunicating pore of rotor dish, the resistance that receives the rotor dish when thick liquids flow through the intercommunicating pore is less, help thick liquids to flow from first grinding chamber to the second grinding chamber, make thick liquids evenly distributed grind the chamber in first grinding chamber and second, thereby improve and grind the quality.
Description
Technical Field
The application relates to the technical field of pulping equipment, in particular to a rotor disc of a double-disc pulping machine, a transmission assembly and the double-disc pulping machine.
Background
In prior art refiners usually one rotor disc and two stationary stator discs are included, and the pulp is ground in two grinding chambers between the rotor disc and the two stator discs. The rotor disc can axially move relative to the two stator discs so as to adjust the grinding pressure on two sides of the rotor disc and ensure the grinding quality.
However, during the grinding process, the slurry needs to pass through the communication holes on the rotor disc from the first grinding area to the second grinding area, and when the slurry passes through the communication holes, the slurry is subjected to resistance from the rotor disc, so that the uniform distribution of the slurry on two sides of the rotor disc cannot be realized in a short time, and the refining quality is affected.
It has been found through research that the influence of the rotor disk on the slurry can be reduced by increasing the area of the communication holes. In a traditional double-disc refiner, an involute spline is arranged at one end of a transmission shaft connected with a rotor disc, and the rotor disc is sleeved on the involute spline through a spline sleeve so as to ensure that the rotor disc can axially move relative to the transmission shaft.
As shown in fig. 1, since the conventional rotor disc needs to be provided with the mounting hole 11 having a large area to penetrate the transmission shaft and the spline housing, and the area of the grinding sheet mounting region 13 on the rotor disc is fixed, the opening range of the communication hole 12 is further reduced, and thus the opening area of the communication hole 12 is small.
For this reason, it is desired to design a rotor disk having a sufficient opening range to ensure a large opening area of the communication hole.
Disclosure of Invention
In view of the above problems, the present application provides a rotor disc of a double disc refiner, the rotor disc being directly connected to a driving shaft through a mounting hole, a ratio of an area of a grinding disc mounting region to an area of the communication hole being greater than or equal to 7 and less than or equal to 10. The area of the communication hole is increased, and the resistance of the rotor disc when slurry flows through the communication hole is small, so that the slurry can flow from the first grinding cavity to the second grinding cavity, the slurry is uniformly distributed in the first grinding cavity and the second grinding cavity, and the grinding quality is improved.
According to an embodiment of the present application, a first aspect provides a rotor disc of a double-disc refiner, the rotor disc being provided with a mounting hole for connecting a transmission shaft, a communication hole surrounding outside the mounting hole, and a refiner plate mounting region located outside the mounting hole;
the mounting hole is matched with the transmission shaft, and the ratio of the area of the grinding sheet mounting region to the area of the communication hole is greater than or equal to 7 and less than or equal to 10.
Preferably, the mounting hole is a spline groove matched with the transmission shaft; the transmission shaft is provided with a spline to penetrate through the mounting hole.
Preferably, the spline is a rectangular spline or an involute spline, and the mounting hole is a rectangular spline groove or an involute spline groove matched with the spline.
Preferably, the rotor disc is fixedly connected with the transmission shaft through the mounting hole.
Preferably, the rotor disc is arranged between two stator discs; the rotor disc and one of the stator discs form a first grinding cavity, and the rotor disc and the other stator disc form a second grinding cavity.
According to an embodiment of the present application, a second aspect provides a drive assembly of a double disc refiner, comprising a drive shaft and a rotor disc, the drive shaft comprising an end portion for fixedly connecting the rotor disc;
the rotor disc is provided with a mounting hole for connecting a transmission shaft, a communication hole surrounding the outer side of the mounting hole and a grinding sheet mounting area positioned on the outer side of the mounting hole;
a ratio of an area of the chip mounting region to the communication hole is greater than or equal to 7 and less than or equal to 10.
Preferably, the end part is provided with a spline, and the mounting hole is a spline groove matched with the spline.
Preferably, the spline is a rectangular spline or an involute spline, and the mounting hole is a rectangular spline groove or an involute spline groove matched with the spline.
According to an embodiment of the application, a third aspect provides a double disc refiner comprising the aforementioned rotor disc.
According to an embodiment of the present application, a fourth aspect provides a double disc refiner comprising the aforementioned drive assembly.
In this application, the mounting hole and the transmission shaft adaptation of rotor dish, the rotor dish passes through the mounting hole and directly is connected with the transmission shaft, compare in the rotor dish through spline housing joint drive shaft, the space of installation spline housing has been saved to the rotor dish of this application, the area of abrasive disc installation area can reach 7 to 10 with the proportion of the area of intercommunicating pore, make the area increase of the intercommunicating pore of the rotor dish of this application, the resistance that receives the rotor dish when thick liquids flow through the intercommunicating pore is less, it grinds the chamber to help thick liquids to flow from first grinding chamber to the second, make thick liquids evenly distributed in first grinding chamber and second grinding chamber, thereby improve and grind the quality.
Drawings
FIG. 1 is a schematic structural view of a conventional rotor disk;
FIG. 2 is a schematic view showing a partial structure of the double disc refiner of the present embodiment;
fig. 3 is a partial structural view of the propeller shaft in the present embodiment;
FIG. 4 is a schematic view of an assembly structure of a rotor disc and a transmission shaft according to the present embodiment;
FIG. 5 is a schematic structural view of a rotor disc after being provided with grinding pieces
FIG. 6 is a schematic view of a configuration of a blade mounting area;
in the figure, a rotor disc 1, a mounting hole 11, a communication hole 12, a grinding chip mounting region 13, a stator disc 2, a transmission shaft 3, a spline 31, a first grinding chamber 4 and a second grinding chamber 5.
Detailed Description
The following is further detailed by the specific embodiments:
the present embodiment provides a double disc refiner, as shown in fig. 2, comprising a rotor disc 1 and two stationary stator discs 2. Wherein, the rotor disc 1 and the stator disc 2 are provided with grinding plates. During operation, the rotor disc 1 rotates between the two stator discs 2 and the slurry can be ground in the grinding chamber formed between the rotor disc 1 and the two stator discs 2.
The double-disc refiner uses a motor (not shown in the figure) to provide power for a transmission assembly, and the transmission assembly of the embodiment comprises a coupler, a transmission shaft 3 and a rotor disc 1 which are connected in sequence by the motor.
In the present embodiment, as shown in fig. 3, the drive shaft 3 comprises a first end for connecting the rotor disc and a second end for connecting the coupling (not shown in the figure). Wherein, the first end of the transmission shaft 3 is provided with a spline 31 to be connected with the rotor disc 1.
As shown in fig. 4 to 6, from the center of the rotor disc 1 to the outer diameter direction, a mounting hole 11 for connecting the transmission shaft 3, a communication hole 12 for passing slurry, and a grinding plate mounting region 13 for mounting a grinding plate are sequentially opened on the rotor disc. That is, the mounting hole 11 of the present embodiment is opened in the middle of the rotor disk 1, the communication hole 12 is surrounded outside the mounting hole 11, and the grinding chip mounting region 13 is located outside the communication hole 12.
In this embodiment, the mounting hole 11 is adapted to the spline on the transmission shaft 3, and the mounting hole 11 is a spline groove adapted to the spline 31. The rotor disc 1 is directly connected with the transmission shaft 3 through the mounting hole 11, and compared with the rotor disc 1 connected with the transmission shaft 3 through the spline housing, the rotor disc 1 of the embodiment saves the space for mounting the spline housing. Accordingly, the area of the rotor disc 1 occupied by the mounting holes 11 is small, so that the range of opening holes allowing the communication holes 12 to be opened is increased. Specifically, the ratio of the area of the chip mounting region 13 to the area of the communication hole 12 is greater than or equal to 7 and less than or equal to 10.
It should be noted that, when the ratio of the area of the grinding chip mounting region 13 to the area of the communication hole 12 on the rotor disk 1 is 7, the area of the communication hole 12 is the largest, and the strength requirement of the rotor disk 1 can be just met. When the ratio of the area of the blade mounting region 13 to the area of the communication hole 12 on the rotor disk 1 is 10, the area of the communication hole 12 of the present embodiment is still smaller than that of the communication hole 12 of the conventional rotor disk 1. Also, the ratio of the area of the chip mounting region 13 to the area of the communication hole 12 may be any value of 7 to 10 such as 7.5, 7.8, 8, 8.4, 9, 9.6, and the like.
In the present embodiment, a first grinding chamber 4 is formed between the rotor disc and one of the stator discs, and a second grinding chamber is formed between the other stator disc, and the first grinding chamber 4 is close to the slurry inlet of the refiner; the second grinding chamber 5 is close to the pulp outlet of the refiner. Due to the increased area of the communication holes 12, the slurry is less resistant to the rotor disc 1, which is beneficial to the slurry flowing from the first grinding chamber 4 to the second grinding chamber 5, and the uniform distribution of the slurry on both sides of the rotor disc 1 is realized, thereby improving the refining quality.
It should be noted that the rotor disc 1 of the present application is not only suitable for a conventional transmission assembly, but also suitable for a new transmission assembly designed by a research and development personnel.
In some embodiments, the rotor disc 1 of the present application is mounted on a conventional drive assembly, and the involute spline is formed at one end of the drive shaft 3 connected with the rotor disc 1. The mounting hole 11 of the rotor disc 1 is adapted to the involute spline, the rotor disc 1 being axially movable on the drive shaft 3.
In this embodiment, a research and development personnel designs a novel transmission assembly, as shown in fig. 2, in the novel transmission assembly, the rotor disc 1 of the present application is fixedly connected with the transmission shaft 3 (the rotor disc 1 and the transmission shaft 3 cannot move relatively), and the rotor disc 1 is made to move axially by moving the transmission shaft 3.
One end of the transmission shaft 3 of the embodiment is fixedly connected with the rotor disc 1 through a first spline, and the other end is connected with the coupling through a second spline. The rotor disc 1 is moved axially by moving the drive shaft 3. Compared with the conventional transmission assembly, the first spline of the embodiment mainly transmits torque to the rotor disc 1, and the rotor disc 1 and the transmission shaft 3 do not generate relative displacement, and compared with the conventional transmission assembly, the transmission shaft 3 of the embodiment does not need to design a space for the rotor disc 1 to move, so that the axial length of the transmission shaft 1 can be shortened; further, since the propeller shaft 3 in this embodiment needs to move in the axial direction, a sliding bearing is mounted on the propeller shaft 3. Compared with the conventional structure in which a rolling bearing is mounted on the drive shaft 3, the drive shaft 3 in the present embodiment is subjected to a small bending stress, which contributes to a reduction in the shaft diameter of the drive shaft 3.
Specifically, the rotor disc 1 of the present embodiment is provided with four communication holes 12, the communication holes 12 are preferably strip-shaped holes with radian, and the four communication holes 12 are annularly arrayed outside the first key slot with the center of the rotor disc 1 as the midpoint. Due to the increase of the area of the communication hole 12, when the slurry passes through the rotor disc 1 through the communication hole 12, the resistance of the rotor disc 1 is small, which is beneficial to the slurry flowing from the first grinding chamber 4 to the second grinding chamber 5, so that the slurry is uniformly distributed in the first grinding chamber 4 and the second grinding chamber 5, and the pressure of the two grinding areas tends to be balanced, thereby ensuring the grinding quality. It should be noted that the shape and number of the communication holes 12 may be set according to actual requirements.
In the present embodiment, the blade mounting region 13 is opened with a screw hole for mounting the blade. Specifically, eight grinding plates are uniformly distributed in the grinding area, and each grinding plate is provided with three bolts in a penetrating manner to be installed on the rotor disc 1. It should be noted that the number of the grinding plates and the number of the threaded holes can be set according to actual requirements.
It should be noted that the first spline formed on the transmission shaft 3 may be a rectangular spline or an involute spline according to actual requirements. When the requirement of transmission torque is small, rectangular splines with lower manufacturing cost are preferably used; involute splines are preferred when the need to transmit torque is large. Correspondingly, the mounting hole 11 is a rectangular spline groove or an involute spline groove adapted to the first spline.
The application is not limited solely to the description and embodiments, and additional advantages and modifications will readily occur to those skilled in the art, so that the application is not limited to the specific details, representative apparatus, and illustrative examples shown and described herein, without departing from the spirit and scope of the general concept as defined by the appended claims and their equivalents.
Claims (10)
1. The rotor disc of the double-disc refiner is provided with a mounting hole for connecting a transmission shaft, a communication hole surrounding the outer side of the mounting hole and a grinding disc mounting area positioned on the outer side of the mounting hole; the method is characterized in that:
the mounting hole is matched with the transmission shaft, and the ratio of the area of the grinding sheet mounting region to the area of the communication hole is greater than or equal to 7 and less than or equal to 10.
2. A rotor disc of a double disc refiner according to claim 1, characterized in that: the mounting hole is a spline groove matched with the transmission shaft; the transmission shaft is provided with a spline to penetrate through the mounting hole.
3. A rotor disc of a double disc refiner according to claim 2, characterized in that: the spline is a rectangular spline or an involute spline, and the mounting hole is a rectangular spline groove or an involute spline groove matched with the spline.
4. A rotor disc of a double disc refiner according to any of claims 1-3, characterized in that: the rotor disc is fixedly connected with the transmission shaft through the mounting hole.
5. A rotor disc of a double disc refiner according to claim 4, characterized in that: the rotor disc is arranged between the two stator discs; the rotor disc and one of the stator discs form a first grinding cavity, and the rotor disc and the other stator disc form a second grinding cavity.
6. The transmission assembly of the double-disc refiner comprises a transmission shaft and a rotor disc, wherein the transmission shaft comprises an end part which is used for fixedly connecting the rotor disc; the method is characterized in that:
the rotor disc is provided with a mounting hole for connecting a transmission shaft, a communication hole surrounding the outer side of the mounting hole and a grinding sheet mounting area positioned on the outer side of the mounting hole;
a ratio of an area of the chip mounting region to an area of the communication hole is greater than or equal to 7 and less than or equal to 10.
7. A drive assembly for a double disc refiner according to claim 6, wherein: the end part is provided with a spline, and the mounting hole is a spline groove matched with the spline.
8. A drive assembly for a double disc refiner according to claim 7 wherein: the spline is a rectangular spline or an involute spline, and the mounting hole is a rectangular spline groove or an involute spline groove matched with the spline.
9. Double plate fiberizer, its characterized in that: comprising a rotor disc according to any of claims 1-5.
10. Double plate fiberizer, its characterized in that: comprising a transmission assembly according to any of claims 6-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122120198.5U CN215628996U (en) | 2021-09-03 | 2021-09-03 | Rotor disc of double-disc pulping machine, transmission assembly and double-disc pulping machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122120198.5U CN215628996U (en) | 2021-09-03 | 2021-09-03 | Rotor disc of double-disc pulping machine, transmission assembly and double-disc pulping machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215628996U true CN215628996U (en) | 2022-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122120198.5U Active CN215628996U (en) | 2021-09-03 | 2021-09-03 | Rotor disc of double-disc pulping machine, transmission assembly and double-disc pulping machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215628996U (en) |
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2021
- 2021-09-03 CN CN202122120198.5U patent/CN215628996U/en active Active
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