Rotary drum type pulper not prone to being blocked and used for paper pulp manufacturing

Abstract

The rotary drum type pulper for paper pulp manufacturing is not prone to being blocked and comprises a mounting plate, supporting legs are installed at the four corners of the lower portion of the mounting plate, and a feeding shell is installed on one side of the upper surface of the mounting plate. Under the action of the outer drum, the inner drum, the water inlet and a related transmission mechanism, when the inner drum finishes or is performing pulping work, water is added to the joint of the inner walls of the outer drum and the inner drum from the water inlet in advance, then the water inlet is blocked by a wooden plug, and then the related transmission mechanism is driven by the servo motor to drive the inner drum to perform pulping work. The outer drum and the inner drum can rotate oppositely, force generated between the outer drum and the inner drum can enable water to backwash sieve holes of the inner drum, the water penetrates through a sieve plate of the inner drum from outside to inside from the top of the outer drum and is sprayed into the inner drum, and therefore fibers blocking the sieve holes can be backwashed back into the drum, the sieve holes are cleaned, adhesive fibers on impurities are washed, and the sieve holes are effectively prevented from being blocked. The pulping efficiency and the paper pulp quality are improved.

Description

Technical Field

[0001] This utility model belongs to the field of pulping technology, and more specifically, it relates to a rotary drum pulper for papermaking that is not prone to clogging. Background Technology

[0002] In the pulp manufacturing industry, rotary drum pulpers are widely used equipment that play a vital role in the waste paper pulping process. With increasing environmental awareness and emphasis on resource recycling, the proportion of waste paper used as a raw material for papermaking is constantly rising.

[0003] To meet this demand, rotary drum pulpers are designed to process unsorted waste paper, integrating pulping and screening processes into one. They can effectively remove light and heavy impurities such as plastics, foils, and hot melt adhesives from the pulp, and can operate under high-consistency conditions to allow fibers to fully swell and separate, preserving fiber strength and length and improving pulp yield. However, existing rotary drum pulpers still have some shortcomings in practical applications. For example, when processing waste paper containing a large number of impurities, the screen holes are easily clogged, affecting pulping efficiency and pulp quality.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a rotary drum pulper for pulp manufacturing that is not easy to clog, in order to achieve a more practical purpose. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a rotary drum pulper for pulp manufacturing that is not prone to clogging, achieved through the following specific technical means:

[0006] A non-clogging rotary drum pulper for pulp manufacturing includes a mounting plate with support legs installed at the four lower corners. A feed housing is installed on one side of the upper surface of the mounting plate, with a feed inlet at the top. A conveying pipe is rotatably installed on one side of the feed housing, with a conveying auger rotatably installed on the inner wall of the conveying pipe. The left side of the conveying pipe is connected to the feed housing, and an inner drum is installed at one end of the conveying pipe. The right side of the conveying pipe is connected to the inner drum. The inner wall of the inner drum has multiple screen holes, and an outer drum is installed on the outer side of the inner drum. Two water inlets are opened on the outer surface of the outer drum. A transmission mechanism is installed above the mounting plate.

[0007] Preferably, the transmission mechanism includes two driven gears, each driven gear having a driving gear meshing on one side, and a transmission rod being mounted on one side of both driving gears. Pulleys are respectively mounted on the outer sides of the transmission rod and the conveying pipe, and a transmission belt is drivingly connected between the two pulleys.

[0008] Preferably, the transmission mechanism further includes a servo motor, which is installed on one side of the feeding housing. The output end of the servo motor is connected to one end of the transmission rod, and a fixing plate is rotatably installed on the other end of the transmission rod. The bottom of the fixing plate is fixed to the mounting plate.

[0009] Preferably, fixing brackets are symmetrically installed on both sides of the upper surface of the mounting plate, and connecting blocks are installed on one side of the inner wall of each of the two fixing brackets, and rotating rings are installed on the same side of the two connecting blocks.

[0010] Preferably, an annular groove is provided on the outer side of the outer drum, and the rotating ring is rotatably connected to the inner wall of the annular groove.

[0011] Preferably, both ends of the outer drum and the inner drum are provided with two sealing rings.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model, through the action of an outer drum, an inner drum, a water inlet, and related transmission mechanisms, allows water to be added to the inner wall joint of the outer and inner drums before the inner drum has finished or is in the process of pulping. The water inlet can then be plugged with a wooden stopper. A servo motor drives the transmission mechanism, causing the outer and inner drums to rotate in opposite directions. The force generated between them allows water to backwash the screen holes of the inner drum. Water is sprayed from the top of the outer drum through the screen plate of the inner drum, thus flushing back the fibers clogging the screen holes into the drum. This cleans the screen holes and washes away the adhering fibers on the impurities, effectively preventing screen clogging and improving pulping efficiency and pulp quality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of a rotary drum pulper for pulp manufacturing that is not prone to clogging, according to this utility model.

[0015] Figure 2 This is a schematic diagram of the pulley and drive belt structure of a rotary drum pulper for pulp manufacturing that is not prone to clogging.

[0016] Figure 3 This is a cross-sectional structural diagram of a rotary drum pulper for pulp manufacturing that is not prone to clogging, according to this utility model.

[0017] Figure 4 This is a partial cross-sectional structural diagram of a rotary drum pulper for pulp manufacturing that is not prone to clogging, according to this utility model.

[0018] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0019] 1. Mounting plate; 2. Support leg; 3. Feed housing; 4. Feed inlet; 5. Fixing frame; 6. Connecting block; 7. Outer drum; 8. Inner drum; 9. Conveying pipe; 10. Conveying auger; 11. Driven gear; 12. Drive gear; 13. Pulley; 14. Transmission belt; 15. Servo motor; 16. Fixing plate; 17. Rotating ring; 18. Annular groove; 19. Transmission rod; 20. Water inlet; 21. Sealing ring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Example:

[0022] As attached Figure 1 To be continued Figure 4 As shown:

[0023] This utility model provides a rotary drum pulper for pulp manufacturing that is not prone to clogging, including a mounting plate 1. Support legs 2 are installed at the four corners of the mounting plate 1. A feed housing 3 is installed on one side of the upper surface of the mounting plate 1. A feed inlet 4 is provided at the top of the feed housing 3. A conveying pipe 9 is rotatably installed on one side of the feed housing 3. A conveying auger 10 is rotatably installed on the inner wall of the conveying pipe 9. The left side of the conveying pipe 9 is connected to the feed housing 3. An inner drum 8 is installed at one end of the conveying pipe 9. The right side of the conveying pipe 9 is connected to the inner drum 8. Multiple screen holes are provided on the inner wall of the inner drum 8. An outer drum 7 is provided on the outer side of the inner drum 8. Two water inlets 20 are opened on the outer surface of the outer drum 7. A transmission mechanism is provided above the mounting plate 1.

[0024] The transmission mechanism includes two driven gears 11, each driven gear 11 has a driving gear 12 meshing on one side, and a transmission rod 19 is installed on one side of both driving gears 12. Pulleys 13 are installed on the outer sides of the transmission rod 19 and the conveying pipe 9, respectively, and a transmission belt 14 is connected between the two pulleys 13.

[0025] The transmission mechanism also includes a servo motor 15, which is installed on one side of the feed housing 3. The output end of the servo motor 15 is connected to one end of the transmission rod 19. The other end of the transmission rod 19 is rotatably mounted with a fixing plate 16. The bottom of the fixing plate 16 is fixed to the mounting plate 1. Under the action of the outer drum 7, inner drum 8, water inlet 20 and related transmission mechanisms, when the inner drum 8 has completed or is in the process of pulping, water is added to the inner wall of the outer drum 7 and inner drum 8 through the water inlet 20 beforehand. Then, the water inlet 20 can be blocked with a wooden plug. Afterwards, the servo motor 15 drives the related transmission mechanism to make the outer drum 7 and inner drum 8 rotate in opposite directions. The force generated between the two can make the water backwash the screen holes of the inner drum 8. The water from the top of the outer drum 7 passes through the screen plate of the inner drum 8 from the outside to the inside. This can backwash the fibers that block the screen holes back into the drum, cleaning the screen holes and washing away the adhesive fibers on the impurities, effectively preventing screen blockage and improving pulping efficiency and pulp quality.

[0026] Among them, fixing brackets 5 are symmetrically installed on both sides of the upper surface of the mounting plate 1, and connecting blocks 6 are installed on one side of the inner wall of the two fixing brackets 5, and rotating rings 17 are installed on the same side of the two connecting blocks 6.

[0027] The outer drum 7 has an annular groove 18 on its outer side, and the rotating ring 17 is rotatably connected to the inner wall of the annular groove 18. Through the corresponding installation of the rotating ring 17 and the annular groove 18, the outer drum 7 remains relatively stable when rotating, thus improving the stability of the device.

[0028] Both ends of the outer drum 7 and the inner drum 8 are provided with two sealing rings 21. The two sealing rings 21 prevent water from leaking out from both sides and improve the sealing performance of the device.

[0029] The working principle of this embodiment is as follows: Waste paper enters the feed housing 3 through the feed inlet 4, and then is conveyed to the inner drum 8 through the conveying auger 10 in the conveying pipe 9 to prepare for the subsequent pulping operation. After the pulping operation is completed in the inner drum 8, or during the pulping operation, water is added to the inner wall of the inner drum 8 and the outer drum 7 through the two water inlets 20 on the outer drum 7. Then, the water inlets 20 are plugged with wooden plugs to prevent water from flowing out.

[0030] Secondly, the servo motor 15 starts and drives the drive gear 12 to rotate through the transmission rod 19, which in turn drives the driven gear 11 meshing with the drive gear 12 to rotate. At the same time, under the action of the two pulleys 13 and the transmission belt 14, the rotation of the driven gear 11 causes the outer drum 7 and the inner drum 8 to rotate in opposite directions. When the outer drum 7 and the inner drum 8 rotate in opposite directions, the water is sprayed from the top of the outer drum 7 from the outside to the inside through the screen plate of the inner drum 8 under the force generated between the outer drum 7 and the inner drum 8. In this way, the water can flush the fibers that block the screen holes back into the drum, and at the same time wash away the adhesive fibers on the impurities, effectively preventing the screen holes from clogging and improving pulping efficiency and pulp quality.

[0031] Finally, during rotation, the annular groove 18 on the outer side of the outer drum 7 cooperates with the rotating ring 17 on the inner wall of the fixed frame 5, so that the outer drum 7 remains relatively stable during rotation, improving the stability of the device. The sealing rings 21 at both ends of the outer drum 7 and the inner drum 8 prevent water from leaking out from both sides, further improving the sealing performance of the device, ensuring the smooth progress of the backwashing process and the quality of pulp manufacturing. Through the above working principle, this rotary drum pulper can effectively prevent screen blockage during pulping, improve the quality of pulp and production efficiency, while maintaining the stability and sealing of the equipment, providing reliable technical support for pulp manufacturing.

[0032] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A non-clogging rotary drum pulper for pulp manufacturing, comprising a mounting plate (1), characterized in that: Support legs (2) are installed at the four corners of the mounting plate (1). A feeding shell (3) is installed on one side of the upper surface of the mounting plate (1). A feeding port (4) is provided at the top of the feeding shell (3). A conveying pipe (9) is rotatably installed on one side of the feeding shell (3). A conveying auger (10) is rotatably installed on the inner wall of the conveying pipe (9). The left side of the conveying pipe (9) is connected to the feeding shell (3). An inner drum (8) is installed at one end of the conveying pipe (9). The right side of the conveying pipe (9) is connected to the inner drum (8). A plurality of sieve holes are provided on the inner wall of the inner drum (8). An outer drum (7) is provided on the outer side of the inner drum (8). Two water inlets (20) are opened on the outer surface of the outer drum (7). A transmission mechanism is provided above the mounting plate (1).

2. The non-clogging drum-type pulper for pulp manufacturing according to claim 1, characterized in that: The transmission mechanism includes two driven gears (11), and a driving gear (12) is meshed on one side of each of the two driven gears (11). A transmission rod (19) is installed on one side of both driving gears (12). A pulley (13) is installed on the outer side of the transmission rod (19) and the conveying pipe (9), respectively. A transmission belt (14) is connected between the two pulleys (13).

3. The non-clogging drum-type pulper for pulp manufacturing according to claim 2, characterized in that: The transmission mechanism also includes a servo motor (15), which is installed on one side of the feed housing (3). The output end of the servo motor (15) is connected to one end of the transmission rod (19). The other end of the transmission rod (19) is rotatably mounted with a fixing plate (16), and the bottom of the fixing plate (16) is fixed to the mounting plate (1).

4. The non-clogging drum-type pulper for pulp manufacturing according to claim 1, characterized in that: Fixing brackets (5) are symmetrically installed on both sides of the upper surface of the mounting plate (1). A connecting block (6) is installed on one side of the inner wall of each of the two fixing brackets (5), and a rotating ring (17) is installed on the same side of the two connecting blocks (6).

5. The non-clogging drum-type pulper for pulp manufacturing according to claim 4, characterized in that: The outer drum (7) has an annular groove (18) on its outer side, and the rotating ring (17) is rotatably connected to the inner wall of the annular groove (18).

6. The non-clogging drum-type pulper for pulp manufacturing according to claim 5, characterized in that: Both ends of the outer drum (7) and the inner drum (8) are provided with two sealing rings (21).

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