A wood pulp double-disc refiner

Abstract

The utility model discloses a kind of wood pulp double-disc mill beating device, it is related to beating technical field, including beating box, the wood pulp feeding chute is fixed in the top of beating box, double stirring mechanism, double-disc mill beating mechanism and auxiliary beating mechanism are arranged from top to bottom in the box of beating box, the double stirring mechanism includes the rotating motor one being located in the middle position of beating box top, the rotating motor one bottom is connected with shaft one, the shaft one is extended to beating box inside by the hole opening of upper box body passing through. The utility model realizes the efficient stirring mixing of wood pulp by the forward and reverse operation of motor in double stirring mechanism, and the stirring blade mixes wood pulp, realizes the efficient stirring mixing of wood pulp, realizes more fine grinding of wood pulp by setting auxiliary beating mechanism, and the remnant precipitate is handled by the flexible three collecting tanks in the precipitate impurity processing device, and the cleanliness of device is improved.

Description

Technical Field

[0001] This utility model relates to the field of pulping technology, specifically to a wood pulp double-disc mill pulping device. Background Technology

[0002] The double-disc pulping unit is a modern, highly efficient, continuous pulping system and a core piece of equipment in the pulp and paper industry. Its core working principle is as follows: two high-speed rotating metal discs with specific textured surfaces form a fine-grinding zone. Pulp of a certain concentration is pumped into the center of the two discs. Under centrifugal force, the pulp is forced through the narrow gap between the discs. During this process, the fibers are subjected to intense shearing, compression, friction, and kneading, resulting in physical changes. Through these actions, the pulp ultimately achieves the ideal freeness and fiber morphology, thus endowing the subsequent paper with the required physical properties such as strength, uniformity, and air permeability. The double-disc pulping unit is not merely an equipment upgrade; it represents a more advanced, efficient, and controllable production method. Its widespread adoption is a hallmark of the modern paper industry, playing an irreplaceable role in promoting technological progress and industrial upgrading across the entire sector.

[0003] The existing double-disc wood pulp mill has limited functionality and adjustability, and has the following shortcomings: the existing double-disc wood pulp mill lacks efficient mixing methods for wood pulp, resulting in low mixing efficiency; at the same time, the existing device lacks auxiliary pulping and grinding mechanisms; after the pulping process is completed, there is sediment at the bottom of the device, and the existing device neglects the treatment of the remaining sediment. Utility Model Content

[0004] The purpose of this utility model is to provide a wood pulp double-disc grinding and beating device, which can effectively solve the technical problems of existing devices lacking efficient mixing and stirring methods, lacking auxiliary beating and grinding mechanisms, and neglecting the treatment of residual sediments after the beating work is completed. It improves the mixing and grinding capabilities of the device, while also improving the cleanliness of the device and extending its service life.

[0005] The objective of this utility model can be achieved through the following technical solutions: A wood pulp double-disc milling and beating device includes a beating box, a wood pulp feeding trough fixed on the top of the beating box, and a double stirring mechanism, a double-disc milling and beating mechanism and an auxiliary beating mechanism arranged from top to bottom inside the beating box; The dual stirring mechanism includes a first rotary motor located at the top center of the pulping tank. The bottom of the first rotary motor is connected to a first rotating shaft. The first rotating shaft extends into the pulping tank through an opening in the upper housing. A first cylinder is fixed to the outside of the first rotating shaft. Stirring blades are radially fixed to the side of the first cylinder. A second rotating shaft is connected to the bottom of the first rotating shaft. A slot is provided at the top of the second rotating shaft to facilitate the rotation of the first rotating shaft. One end of a first support rod is radially fixed to the outside of the second rotating shaft. The other end of the first support rod is fixed to the inner housing of the pulping tank. A second rotating shaft is connected to the bottom of the second rotating shaft. A slot is provided at the bottom of the second rotating shaft to facilitate the rotation of the second rotating shaft. A second cylinder is fixed to the outside of the second rotating shaft. Stirring blades are radially fixed to the side of the second cylinder. The second rotating shaft extends into the bottom of the pulping tank through an opening in the lower housing. A second rotary motor is connected to the bottom of the second rotating shaft.

[0006] As a further embodiment of this utility model, the double-disc grinding and pulping mechanism includes an upper grinding disc located below the second cylinder and vertically fixed to the outside of the second rotating shaft. Grinding teeth are fixed at the bottom of the upper grinding disc. A grinding plate is provided directly below the upper grinding disc. A hole for the second rotating shaft to pass through is opened in the center of the grinding plate. Grinding teeth are fixed at the top and bottom of the grinding plate. One end of a second support rod is radially fixed to the outside of the grinding plate. The other end of the second support rod is fixed to the inner box of the pulping box. A lower grinding disc located below the grinding plate and outside the second rotating shaft is vertically fixed. Grinding teeth are fixed at the top of the lower grinding disc.

[0007] As a further embodiment of this utility model, the center positions of the upper and lower grinding discs are fixed perpendicularly to the second rotating shaft.

[0008] As a further embodiment of this utility model, the auxiliary pulping mechanism includes a third grinding disc located below the lower grinding disc and vertically fixed to the outside of the second rotating shaft. Grinding teeth are fixed at the bottom of the third grinding disc, and the center of the third grinding disc is vertically fixed to the second rotating shaft.

[0009] As a further embodiment of this utility model, the auxiliary pulping mechanism also includes grinding teeth fixed to the bottom of the pulping box, the grinding teeth being located directly below the third grinding disc.

[0010] As a further embodiment of this utility model, a sedimentation and debris treatment device is provided at the bottom edge of the pulping tank. The sedimentation and debris treatment device includes a rectangular groove opened at the bottom edge of the pulping tank, a collection groove sliding in the three rectangular grooves, and a push-pull handle fixed on the outside of the collection groove. The push-pull handle is located on the periphery of the pulping tank body.

[0011] As a further embodiment of this utility model, shock absorbers are fixed at the four corners of the bottom of the pulping box, and columns are fixed at the bottom of the shock absorbers.

[0012] As a further embodiment of this utility model, a door is provided at one end of the pulping box, and a sealing strip is provided at the connection position between the door and the pulping box.

[0013] As a further embodiment of this utility model, the pulping box has symmetrical pulp outlets on one side of the lower part, and a collection box is placed on the lower part of the pulping box corresponding to the pulp outlet.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This invention achieves efficient mixing of wood pulp by using the forward and reverse rotation of the motor in the dual stirring mechanism and the stirring blades to stir and mix the wood pulp. This invention achieves finer grinding of wood pulp by setting an auxiliary pulping mechanism; This invention utilizes three flexibly sliding collection tanks in the sedimentation and impurity treatment device to treat residual sediment, thereby improving the cleanliness of the device. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model from one perspective; Figure 2 This is a schematic diagram of the overall structure of this utility model from another perspective; Figure 3 This is a schematic diagram of the upper structure of the dual stirring mechanism of this utility model; Figure 4 This is a schematic diagram of the lower structure of the dual stirring mechanism of this utility model; Figure 5 This is a schematic diagram of the double-disc grinding and pulping mechanism of this utility model; Figure 6 This is a schematic diagram of the grinding plate and its connected structure of this utility model; Figure 7 This is a schematic diagram of the auxiliary pulping mechanism of this utility model; Figure 8 This is a schematic diagram of the lower structure of the auxiliary pulping mechanism of this utility model; Figure 9 This is a schematic diagram of the sedimentation impurity treatment device of this utility model; Figure 10 This is a schematic diagram of the rectangular tank structure in the sedimentation impurity treatment device of this utility model; Figure 11 This is a schematic diagram of the collection tank and its connected structure in the sedimentation impurity treatment device of this utility model.

[0017] In the diagram: 1. Pulping box; 2. Pulp feeding trough; 3. Double stirring mechanism; 4. Double-disc grinding and pulping mechanism; 5. Auxiliary pulping mechanism; 6. Rotary motor one; 7. Rotating shaft one; 8. Cylinder one; 9. Stirring blade; 10. Round handle; 11. Support rod one; 12. Rotating shaft two; 13. Cylinder two; 14. Rotary motor two; 15. Upper grinding disc; 16. Grinding teeth; 17. Grinding plate; 18. Support rod two; 19. Lower grinding disc; 20. Third grinding disc; 21. Sedimentation and impurity treatment device; 22. Rectangular trough; 23. Collection trough; 24. Push-pull handle; 25. Shock absorber; 26. Column; 27. Box door; 28. Pulp outlet; 29. ​​Collection box. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] See appendix Figure 1-11 As shown, a wood pulp double-disc milling and beating device includes a pulping box 1, a wood pulp feeding trough 2 fixed on the top of the pulping box 1, a double stirring mechanism 3, a double-disc milling and beating mechanism 4 and an auxiliary beating mechanism 5 arranged from top to bottom inside the pulping box 1, shock absorbers 25 fixed at the four corners of the bottom of the pulping box 1, and columns 26 fixed at the bottom of the shock absorbers 25, a box door 27 opened at one end of the pulping box 1, a sealing strip is provided at the connection position between the box door 27 and the pulping box 1, and pulp outlets 28 are symmetrically opened on the lower part of one side of the pulping box 1, and a collection box 29 is placed on the lower part of the side of the pulping box 1 corresponding to the pulp outlet 28.

[0020] Specifically, sealing strips are provided at the box door 27, the three collection troughs 23, and the connection points between the upper and lower motors and the box body. Due to the presence of the sealing strips, the device has good sealing performance. When the box door 27 is closed, the wood pulp is poured into the pulping box 1 through the wood pulp feeding trough 2. Finally, the target pulp is discharged through the two sets of pulp outlets 28 and collected by the collection box 29.

[0021] See appendix Figure 1-4As shown, the dual stirring mechanism 3 includes a rotary motor 6 located at the top center of the pulping tank 1. The bottom of the rotary motor 6 is connected to a rotating shaft 7. The rotating shaft 7 extends into the pulping tank 1 through an opening in the upper housing. A cylinder 8 is fixed to the outside of the rotating shaft 7. Stirring blades 9 are radially fixed to the side of the cylinder 8. A round handle 10 is connected to the bottom of the rotating shaft 7. A slot is provided on the upper part of the round handle 10 to facilitate the rotation of the rotating shaft 7. One end of a support rod 11 is radially fixed to the outside of the round handle 10. The other end of the support rod 11 is fixed to the inner housing of the pulping tank 1. A second rotating shaft 12 is connected to the bottom of the round handle 10. A slot is provided at the bottom of the round handle 10 to facilitate the rotation of the second rotating shaft 12. A cylinder 13 is fixed to the outside of the second rotating shaft 12. Stirring blades 9 are radially fixed to the side of the cylinder 13. The second rotating shaft 12 extends into the bottom of the pulping tank 1 through an opening in the lower housing. A rotary motor 14 is connected to the bottom of the second rotating shaft 12.

[0022] Specifically, the motor and the rotating shaft are linked by the rotor to ensure the normal operation of the rotation. The rotating motor 6 and the rotating motor 14 are started, so that the two sets of motors drive the connected rotating shaft to rotate in different directions. The eight sets of stirring blades 9 on the cylinder 8 and the eight sets of stirring blades 9 on the cylinder 2 stir the wood pulp in opposite directions, so that the wood pulp is better mixed. The support of the four support rods 11 makes the rotating part more stable.

[0023] See appendix Figure 1-2 As shown in Figure 5-8, the double-disc grinding and pulping mechanism 4 includes an upper grinding disc 15 located below the second cylinder 13 and vertically fixed to the outside of the second rotating shaft 12. Grinding teeth 16 are fixed at the bottom of the upper grinding disc 15. A grinding plate 17 is arranged directly below the upper grinding disc 15. A hole for the second rotating shaft 12 to pass through is opened in the center of the grinding plate 17. Grinding teeth 16 are fixed at the top and bottom of the grinding plate 17. One end of a second support rod 18 is radially fixed to the outside of the grinding plate 17. The other end of the second support rod 18 is fixed to the inner box of the pulping box 1. A shaft 12 is vertically fixed below the grinding plate 17. The outer lower grinding disc 19 has grinding teeth 16 fixed on its top. The center of the upper grinding disc 15 and the lower grinding disc 19 is fixed perpendicularly to the second rotating shaft 12. The auxiliary pulping mechanism 5 includes a third grinding disc 20 located below the lower grinding disc 19 and fixed perpendicularly to the outer side of the second rotating shaft 12. Grinding teeth 16 are fixed at the bottom of the third grinding disc 20, and the center of the third grinding disc 20 is fixed perpendicularly to the second rotating shaft 12. The auxiliary pulping mechanism 5 also includes grinding teeth 16 fixed to the bottom of the pulping box 1, with the grinding teeth 16 located directly below the third grinding disc 20.

[0024] Specifically, due to the centrifugal force of the wood pulp and the gravity of the viscous material, the viscous portion of the wood pulp concentrates in the lower half of the pulping tank 1. The grinding plate 17 is securely connected to the inner wall of the tank via four support rods 18. The rotary motor 14 drives the rotating shaft 12 to rotate, which in turn drives the upper grinding disc 15 and the lower grinding disc 19 near the grinding plate 17 to rotate. Multiple sets of grinding teeth 16 at four positions thoroughly grind and pulp the wood pulp. Additionally, the bottom of the pulping tank 1 contains a relatively large amount of viscous material. The rotating shaft 12 also drives the third grinding disc 20 to rotate, where multiple sets of grinding teeth 16 at two positions thoroughly grind and pulp the bottom wood pulp. The bottom of the tank also functions as the grinding plate 17. The stirring blades 9 and the grinding teeth 16 work together to repeatedly stir, mix, and grind the wood pulp.

[0025] See appendix Figure 1 , 9 As shown in -11, a sedimentation and impurity treatment device 21 is provided at the bottom edge of the pulping tank 1. The sedimentation and impurity treatment device 21 includes a rectangular groove 22 opened at the bottom edge of the pulping tank 1. A collection groove 23 slides in the three rectangular grooves 22. A push-pull handle 24 is fixed on the outside of the collection groove 23. The push-pull handle 24 is located on the outside of the pulping tank 1.

[0026] Specifically, during the movement of the pulp, centrifugal force will throw the sediment into the three collection tanks 23. After turning off the first rotary motor 6 and the second rotary motor 14, and after the target wood pulp is discharged, the box door 27 is opened, and the three sets of push-pull handles 24 are pulled to collect the sediment accumulated in the collection tanks 23.

[0027] In addition, during the entire operation of the device, the four sets of shock absorbers 25 reduced the vibration of the pulping box 1, keeping the device in a safe working state.

[0028] The working principle of this utility model is as follows: The pulping tank 1, wood pulp feeding trough 2, double stirring mechanism 3, double disc milling mechanism 4, auxiliary pulping mechanism 5, sedimentation and impurity treatment device 21, shock absorber 25, column 26, and collection box 29 are assembled together. The tank door 27 is closed, and wood pulp is poured into the pulping tank 1 through the wood pulp feeding trough 2. Rotary motors 1-6 and 2-14 are started, causing the two motors to drive their connected shafts to rotate in different directions. The eight sets of stirring blades 9 on cylinder 1-8 and cylinder 2-13 stir the wood pulp in opposite directions, allowing for better mixing. The support of four support rods 1-11 makes the rotating part more stable. Due to the centrifugal force of the wood pulp and the gravity of the viscous material, the viscous part of the wood pulp will concentrate in the lower half of the pulping tank 1. The grinding plate 17 is stably connected to the inner wall of the tank through four support rods 2-18. The rotary motor 2-14 drives... Rotating shaft 12 drives the upper grinding disc 15 and lower grinding disc 19 near grinding plate 17 to rotate. Multiple grinding teeth 16 at four positions thoroughly grind and pulp the wood pulp. The bottom of the pulping tank 1 contains a relatively large amount of viscous material. Rotating shaft 12 also drives the third grinding disc 20 to rotate. Multiple grinding teeth 16 at two positions thoroughly grind and pulp the bottom wood pulp. The bottom of the tank also acts as the grinding plate 17. The stirring blades 9 and grinding teeth 16 work together to repeatedly stir, mix, and grind the wood pulp. During the movement of the pulp, centrifugal force throws the sediment into the three collection tanks 23. After turning off rotating motor 6 and rotating motor 14, the target pulp is discharged through two sets of pulp outlets 28 and collected by the collection tank 29. Opening the tank door 27 and pulling the three sets of push-pull handles 24 collects the sediment accumulated in the collection tank 23. This invention achieves efficient mixing of wood pulp by rotating the motor in both directions in the dual stirring mechanism 3 and mixing the stirring blades 9. By setting up the auxiliary pulping mechanism 5, the wood pulp can be ground more finely. The residual sediment is treated by the three collection tanks 23 in the sedimentation and impurity treatment device 21, which can be flexibly pushed and pulled, thus improving the cleanliness of the device.

[0029] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A wood pulp double-disc grinding and beating device, comprising a beating box (1), characterized in that: The pulping box (1) is fixed with a wood pulp feeding trough (2) at the top. The pulping box (1) is equipped with a double stirring mechanism (3), a double disc mill pulping mechanism (4) and an auxiliary pulping mechanism (5) from top to bottom. The dual stirring mechanism (3) includes a rotary motor (6) located at the top center of the mixing tank (1). The bottom of the rotary motor (6) is connected to a rotating shaft (7). The rotating shaft (7) extends through an opening in the upper body into the mixing tank (1). A cylinder (8) is fixed to the outside of the rotating shaft (7). A stirring blade (9) is radially fixed to the side of the cylinder (8). A round handle (10) is connected to the bottom of the rotating shaft (7). A slot is provided on the upper part of the round handle (10) to facilitate the rotation of the rotating shaft (7). The outer diameter of the round handle (10) is... One end of a support rod (11) is fixed, and the other end of the support rod (11) is fixed to the inner box of the pulping box (1). The bottom of the round handle (10) is connected to the rotating shaft (12). The bottom of the round handle (10) is provided with a slot to facilitate the rotation of the rotating shaft (12). The outer side of the rotating shaft (12) is fixed with a cylinder (13). The side of the cylinder (13) is radially fixed with stirring blades (9). The rotating shaft (12) extends through the opening in the lower box to the bottom of the pulping box (1). The bottom of the rotating shaft (12) is connected to a rotary motor (14).

2. The wood pulp double-disc grinding and beating device according to claim 1, characterized in that: The double-disc grinding and pulping mechanism (4) includes an upper grinding disc (15) located below the cylinder (13) and vertically fixed to the outside of the rotating shaft (12). The bottom of the upper grinding disc (15) is fixed with grinding teeth (16). A grinding plate (17) is provided directly below the upper grinding disc (15). A hole for the rotating shaft (12) to pass through is opened in the center of the grinding plate (17). Grinding teeth (16) are fixed at the top and bottom of the grinding plate (17). One end of a support rod (18) is radially fixed to the outside of the grinding plate (17). The other end of the support rod (18) is fixed to the inner box of the pulping box (1). A lower grinding disc (19) located below the grinding plate (17) and located outside the rotating shaft (12) is vertically fixed. Grinding teeth (16) are fixed at the top of the lower grinding disc (19).

3. The wood pulp double-disc grinding and beating device according to claim 2, characterized in that: The center of the upper grinding disc (15) and the lower grinding disc (19) are fixed perpendicularly to the second rotating shaft (12).

4. The wood pulp double-disc grinding and beating device according to claim 1, characterized in that: The auxiliary pulping mechanism (5) includes a third grinding disc (20) located below the lower grinding disc (19) and vertically fixed to the outside of the second rotating shaft (12). The bottom of the third grinding disc (20) is fixed with grinding teeth (16), and the center of the third grinding disc (20) is vertically fixed to the second rotating shaft (12).

5. The wood pulp double-disc grinding and beating device according to claim 1, characterized in that: The auxiliary pulping mechanism (5) also includes grinding teeth (16) fixed to the bottom of the pulping box (1), and the grinding teeth (16) are located directly below the third grinding disc (20).

6. The wood pulp double-disc grinding and beating device according to claim 1, characterized in that: The bottom edge of the pulping tank (1) is provided with a sedimentation and impurity treatment device (21). The sedimentation and impurity treatment device (21) includes a rectangular groove (22) opened at the bottom edge of the pulping tank (1). A collection groove (23) slides in the three rectangular grooves (22). A push-pull handle (24) is fixed on the outside of the collection groove (23). The push-pull handle (24) is located on the outside of the pulping tank (1).

7. The wood pulp double-disc grinding and beating device according to claim 1, characterized in that: The bottom of the pulping box (1) is fixed with shock absorbers (25) at the four corners, and the bottom of the shock absorbers (25) is fixed with columns (26).

8. The wood pulp double-disc grinding and beating device according to claim 1, characterized in that: The pulping box (1) has a door (27) at one end, and a sealing strip is provided at the connection position between the door (27) and the pulping box (1).

9. A wood pulp double-disc grinding and beating device according to claim 1, characterized in that: The pulping box (1) has symmetrical pulp outlets (28) on one side of the lower part, and a collection box (29) is placed on the lower part of the side of the pulping box (1) corresponding to the pulp outlet (28).

Images