Quantitative control pulp supply system of paper machine

Abstract

The utility model relates to the technical field of paper towel production, in particular to a quantitative control pulp supply system of a paper machine, which comprises a material storage barrel, a rotating shaft, a rotating driving component, a lifting driving component, a shunting component and a backflow mechanism. A feeding hopper communicated with the interior of the storage barrel is arranged on the storage barrel. The rotating shaft is located in the storage barrel and connected with the stirring paddle, the rotating shaft is slidably connected with the sleeve, the sleeve is connected with the grinding frustum, and the grinding sleeve is arranged in the storage barrel. The rotation driving assembly drives the rotating shaft to rotate. The lifting driving assembly drives the grinding frustum to ascend and descend so as to adjust the size of the gap between the grinding frustum and the grinding sleeve. One discharging end of the flow dividing assembly communicates with the discharging pipe, the other discharging end of the flow dividing assembly communicates with the guide pipe, and a flow meter is arranged in the discharging pipe. The input end of the backflow mechanism communicates with the guide pipe, and the output end of the backflow mechanism is inserted into the storage barrel and located above the grinding sleeve. According to the paper pulp grinding device, paper pulp can be ground circularly, large-particle impurities are avoided, discharging is uniform, and the discharging amount is controllable.

Description

Technical Field

[0001] The utility model relates to the technical field of paper towel production, in particular to a quantitative control pulp supply system of a papermaking machine. Background Art

[0002] Paper towels are manufactured using a papermaking machine. This machine transforms a water-based suspension of pulp that meets papermaking requirements through a series of processes, including dehydration through filters, mechanical extrusion, and drying. The papermaking machine comprises three main components: forming, pressing, and drying. These components are equipped with the necessary finishing, winding, and transmission devices, as well as auxiliary systems such as pulp supply, pulp and white water circulation, vacuum, ventilation, broke handling, lubrication, and automatic control. Pulp supply is crucial in paper towel production, but existing papermaking machine pulp supply systems are often prone to blockage and discharging issues, requiring improvement.

[0003] The technical solution disclosed in the Chinese patent with authorization announcement number CN214938763U is achieved by setting a control mechanism, which drives the rotating rod to rotate through a motor, thereby driving the support rod to rotate, so that the support rod squeezes the water pump switch. After a certain period of time, the water pump switch automatically resets, thereby turning on the water pump to allow the pulp raw material to enter the papermaking machine, thereby achieving the purpose of controlling the amount of pulp entering the papermaking machine.

[0004] However, this device still has some shortcomings: the pulp lacks a refined structure, so the large particles of impurities contained in the pulp are discharged along the conveying pipe, affecting the quality of the paper. In addition, the stirring mechanism in the device only works when discharging the material, and its stirring efficiency is low, and it cannot completely refine the agglomerated materials in the pulp. Utility Model Content

[0005] The utility model aims to solve the problems existing in the background technology and propose a quantitative control pulp supply system for a papermaking machine.

[0006] The technical solution of the utility model is a quantitative control pulp supply system of a papermaking machine, which comprises a storage barrel. A feeding hopper connected to the interior of the storage barrel is arranged on the storage barrel.

[0007] The rotating shaft is located in the storage barrel and is connected to the rotation, the rotating shaft is connected to the stirring paddle, and a sleeve is set on the rotating shaft along its radial sliding direction, the sleeve is connected to the grinding cone, and a grinding sleeve is set on the outside of the grinding cone in the storage barrel.

[0008] The rotary drive assembly is connected to the storage barrel and drives the rotating shaft to rotate, thereby simultaneously driving the stirring paddle and the grinding cone to rotate.

[0009] The lifting drive assembly is connected to the material storage barrel and drives the grinding cone to rise and fall to adjust the size of the gap between the grinding cone and the grinding sleeve.

[0010] A diversion component, wherein the input end of the diversion component is connected to the discharge end of the storage barrel, one discharge end of the diversion component is connected to the discharge pipe and the other discharge end is connected to the guide pipe, and a flow meter is arranged in the discharge pipe.

[0011] And a reflux mechanism is connected to the material storage barrel, and the input end of the reflux mechanism is communicated with the guide pipe, and the output end of the reflux mechanism is inserted into the material storage barrel and located above the grinding sleeve.

[0012] Preferably, a plurality of limiting grooves are provided on the inner wall of the channel of the sleeve along its radial direction, and a plurality of limiting blocks are provided on the rotating shaft along its radial direction, and the limiting blocks are inserted into the limiting grooves and slidably connected thereto.

[0013] Preferably, the lifting drive assembly includes a hydraulic cylinder, a bracket rotatably connected to the sleeve is sleeved on the sleeve, a cylinder barrel of the hydraulic cylinder is connected to the storage barrel, and a push rod of the hydraulic cylinder is connected to the bracket.

[0014] Preferably, the flow diversion assembly includes a tee and a regulating valve. The tee has three interconnected connectors arranged in a circular array around its axis. The top connector connects to the feed pipe, while the two lower connectors connect to the discharge pipe and guide pipe, respectively. The feed pipe is connected to the bottom of the storage barrel and communicates with its discharge port. The regulating valve is located within the tee and is rotatably connected thereto. When not in a discharge mode, the regulating valve connects the feed pipe and guide pipe. When in a discharge mode, the regulating valve connects the feed pipe and the discharge pipe.

[0015] Preferably, the regulating valve includes a valve body and a motor B. The valve body is located in a tee and is rotatably connected thereto. A diversion channel is provided on the valve body, and the opening angle of the diversion channel at both ends is 120 degrees. The motor B is connected to the tee and drives the valve body to rotate.

[0016] Preferably, the reflux mechanism includes a riser, an auger, and a transmission assembly. The input end of the riser is connected to the guide tube, and the output end of the riser is connected to the return pipe. The return pipe is inserted into the storage barrel and is not above the grinding sleeve. The auger is located within the riser and is rotatably connected thereto. The central axis of the auger is connected to the rotating shaft via the transmission assembly.

[0017] Preferably, the transmission assembly includes a pulley and a toothed belt, the two pulleys are respectively arranged on the rotating shaft and the central axis of the auger, and the pulleys on both sides are connected by a toothed belt transmission.

[0018] Compared with the prior art, the present invention has the following beneficial technical effects:

[0019] By setting a grinding cone and a grinding sleeve, the grinding cone rotates along with the rotating shaft, thereby effectively grinding and refining the raw materials, and the gap between the grinding cone and the inner wall of the grinding sleeve is controlled and adjusted by a hydraulic cylinder, so that the degree of pulp refinement can be controlled; by setting a three-way pipe, a regulating valve is set in the three-way pipe, and the discharge end of the three-way pipe is connected to the discharge pipe and the reflux mechanism respectively, when discharging, the discharge pipe discharges the material and measures the discharge amount by a flow meter, and when the discharge amount reaches the set amount, it switches to the output end of the storage barrel to connect the reflux mechanism, and the auger in the reflux mechanism rotates to lift the raw materials in the bottom layer of the pulp to the top of the grinding sleeve, and the grinding sleeve is used to grind and refine it again to avoid the appearance of large particles of impurities in the pulp. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 Schematic diagram of the internal structure of the storage barrel and guide tube;

[0022] Figure 3 Schematic diagram of the internal structure of the tee pipe.

[0023] Figure numerals: 1. Frame; 2. Storage barrel; 3. Feed hopper; 4. Rotating shaft; 5. Agitator; 6. Motor A; 7. Sleeve; 8. Grinding cone; 9. Grinding sleeve; 10. Bracket; 11. Hydraulic cylinder; 12. Discharge pipe; 13. Tee; 131. Connecting seat; 14. Regulating valve; 141. Valve body; 1411. Diversion channel; 142. Motor B; 15. Discharge pipe; 16. Flow meter; 17. Guide pipe; 18. Lifting pipe; 19. Return pipe; 20. Auger; 21. Transmission assembly. DETAILED DESCRIPTION

[0024] Example 1

[0025] like Figure 1-Figure 3As shown, the present invention proposes a quantitatively controlled pulp supply system for a papermaking machine, comprising a storage barrel 2, a rotating shaft 4, a rotary drive assembly, a lifting drive assembly, a diversion assembly, and a reflux mechanism. The bottom of the storage barrel 2 is connected to the frame 1, and the storage barrel 2 is provided with a feed hopper 3 connected to the interior thereof. The rotating shaft 4 is located within the storage barrel 2 and is connected to the rotating shaft 4. The rotating shaft 4 is connected to the stirring paddle 5, and a sleeve 7 is provided on the rotating shaft 4 for sliding movement along its radial direction. The sleeve 7 is connected to the grinding cone 8. The inner wall of the channel of the sleeve 7 is provided with a plurality of radial limit grooves. The rotating shaft 4 is provided with a plurality of radial limit blocks. The limit blocks are inserted into the limit grooves and are slidably connected thereto. A grinding sleeve 9 is provided on the outside of the grinding cone 8 within the storage barrel 2. The rotary drive assembly includes, but is not limited to, a motor A6, which is connected to the storage barrel 2 and drives the rotating shaft 4 to rotate, thereby simultaneously driving the stirring paddle 5 and the grinding cone 8 to rotate. The lifting drive assembly includes a hydraulic cylinder 11. A bracket 10 is mounted on the sleeve 7 and rotatably connected to it. The cylinder barrel of the hydraulic cylinder 11 is connected to the material storage barrel 2, and the push rod of the hydraulic cylinder 11 is connected to the bracket 10. A lifting drive assembly is connected to the material storage barrel 2 and drives the grinding cone 8 up and down to adjust the gap between the grinding cone 8 and the grinding sleeve 9. The flow diverter assembly is connected to the discharge end of the material storage barrel 2 and includes a tee 13 and a regulating valve 14. The tee 13 is provided with three interconnected connectors 131 arranged in a circular array around its axis. The top connector 131 connects to the feed pipe 12, while the two lower connectors 131 connect to the discharge pipe 15 and guide pipe 17, respectively. The feed pipe 12 is connected to the bottom of the material storage barrel 2 and communicates with its discharge port. The regulating valve 14 is located within the tee 13 and rotatably connected to it. A flowmeter 16 is located within the discharge pipe 15. The regulating valve 14 includes a valve body 141 and a motor B 142. The valve body 141 is located within the tee 13 and is rotatably connected thereto. A guide channel 1411 is provided on the valve body 141, with the opening angle at both ends of the guide channel 1411 being 120 degrees. A motor B 142 is connected to the tee 13 and drives the valve body 141 to rotate. The regulating valve 14 connects the feed pipe 12 and the guide pipe 17 in the non-discharging state, and connects the feed pipe 12 and the discharge pipe 15 in the discharging state. The reflux mechanism includes a lifting pipe 18, an auger 20, and a power mechanism. The input end of the lifting pipe 18 is connected to the guide pipe 17, and the output end of the lifting pipe 18 is connected to the return pipe 19. The return pipe 19 is inserted into the storage barrel 2 and is not above the grinding sleeve 9. The auger 20 is located within the lifting pipe 18 and is rotatably connected thereto. The power mechanism drives the auger 20 to rotate.

[0026] In this embodiment, the motor 6 is kept running, and the regulating valve 14 is adjusted to the output end of the material storage barrel 2 and the guide pipe 17, and the raw material is added to the material storage barrel 2 along the feed hopper 3. At this time, the raw material flows downward through the gap between the grinding sleeve 9 and the grinding cone 8. The large particle impurities are quickly refined under the action of the grinding sleeve 9 and the grinding cone 8. Then the raw material is stirred by the stirring paddle 5 in the material storage barrel 2, and the raw material at the bottom enters the lifting pipe 18 along the three-way pipe 13 and the guide pipe 17. The pulp is lifted by the auger 20 along the return pipe 1 9 enters the storage barrel. At this time, the hydraulic cylinder 11 is started to properly pull up the grinding cone 8 to reduce the gap between the grinding sleeve 9 and the grinding cone 8, thereby further refining the slurry. This cycle will prevent precipitation and agglomeration from occurring in the raw materials. When discharging, the regulating valve 14 is adjusted to connect the output end of the storage barrel 2 and the discharge pipe 15. The discharge pipe 15 discharges the material in a quantitative manner. When the flow meter 16 counts to the set value, click B142 to drive the valve body 141 to rotate to restore the connection between the three-way pipe 13 and the storage barrel 2 and the guide pipe 17.

[0027] Example 2

[0028] like Figure 1 and Figure 2 As shown, the present invention proposes a quantitative control pulp supply system for a papermaking machine. Compared with Example 1, the power mechanism includes a transmission assembly, and the transmission assembly 21 includes a pulley and a toothed belt. The two pulleys are respectively arranged on the rotating shaft 4 and the central axis of the auger 20, and the pulleys on both sides are connected by a toothed belt transmission.

[0029] In this embodiment, while the motor A6 drives the rotating shaft 4 to rotate, the auger 20 is driven to rotate through the pulley and the toothed belt, thereby reducing power-consuming equipment and lowering the energy consumption of the entire device.

[0030] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A quantitative control pulp supply system for a papermaking machine, characterized in that: include A material storage barrel (2), wherein a feed hopper (3) is provided on the material storage barrel (2) and is in communication with the interior of the material storage barrel; A rotating shaft (4) is located in the storage barrel (2) and is connected to the rotating shaft (4), the rotating shaft (4) is connected to the stirring paddle (5), and a sleeve (7) is provided on the rotating shaft (4) for sliding along its radial direction, the sleeve (7) is connected to the grinding cone (8), and a grinding sleeve (9) is provided outside the grinding cone (8) in the storage barrel (2); A rotary drive assembly connected to the storage barrel (2) and driving the rotating shaft (4) to rotate, thereby simultaneously driving the stirring paddle (5) and the grinding cone (8) to rotate; A lifting drive assembly is connected to the material storage barrel (2) and drives the grinding cone (8) to move up and down to adjust the size of the gap between the grinding cone (8) and the grinding sleeve (9); A diverter assembly, wherein the input end of the diverter assembly is connected to the discharge end of the storage barrel (2), one discharge end of the diverter assembly is connected to a discharge pipe (15) and the other discharge end is connected to a guide pipe (17), and a flow meter (16) is provided in the discharge pipe (15); and a reflux mechanism connected to the material storage barrel (2), wherein the input end of the reflux mechanism is communicated with the guide tube (17), and the output end of the reflux mechanism is inserted into the material storage barrel (2) and is located above the grinding sleeve (9).

2. A quantitative control pulp supply system for a papermaking machine according to claim 1, characterized in that: A plurality of limiting grooves are arranged on the inner wall of the channel of the sleeve (7) along its radial direction, and a plurality of limiting blocks are arranged on the rotating shaft (4) along its radial direction. The limiting blocks are inserted into the limiting grooves and are slidably connected thereto.

3. A quantitative control pulp supply system for a papermaking machine according to claim 2, characterized in that: The lifting drive assembly comprises a hydraulic cylinder (11); a bracket (10) is sleeved on the sleeve (7) and is rotatably connected to the sleeve; the cylinder barrel of the hydraulic cylinder (11) is connected to the storage barrel (2), and the push rod of the hydraulic cylinder (11) is connected to the bracket (10).

4. The quantitative control pulp supply system for a papermaking machine according to claim 1, characterized in that: The flow dividing assembly comprises a three-way pipe (13) and a regulating valve (14); three interconnected connecting seats (131) are arranged on the three-way pipe (13) in a ring array around its axis, wherein the uppermost connecting seat (131) is connected to the feed pipe (12), and the two connecting seats (131) at the lower end are respectively connected to the discharge pipe (15) and the guide pipe (17); the feed pipe (12) is connected to the bottom of the storage barrel (2) and is connected to its discharge port; the regulating valve (14) is located in the three-way pipe (13) and is rotatably connected thereto; the regulating valve (14) conducts the feed pipe (12) and the guide pipe (17) in a non-discharging working state, and conducts the feed pipe (12) and the discharge pipe (15) in a discharging working state.

5. The quantitative control pulp supply system for a papermaking machine according to claim 4, characterized in that: The regulating valve (14) comprises a valve body (141) and a motor B (142); the valve body (141) is located in the three-way pipe (13) and is rotatably connected thereto; a guide channel (1411) is provided on the valve body (141), and the opening angle of the two ends of the guide channel (1411) is 120 degrees; the motor B (142) is connected to the three-way pipe (13) and drives the valve body (141) to rotate.

6. The quantitative control pulp supply system for a papermaking machine according to claim 1, characterized in that: The reflux mechanism comprises a lifting pipe (18), an auger (20) and a transmission assembly (21); the input end of the lifting pipe (18) is connected to the guide pipe (17), the output end of the lifting pipe (18) is connected to the return pipe (19), and the return pipe (19) is inserted into the storage barrel (2) and is not above the grinding sleeve (9); the auger (20) is located in the lifting pipe (18) and is rotatably connected thereto, and the central axis of the auger (20) is transmission-connected to the rotating shaft (4) through the transmission assembly (21).

7. A quantitative control pulp supply system for a papermaking machine according to claim 6, characterized in that: The transmission assembly (21) comprises a pulley and a toothed belt. The two pulleys are respectively arranged on the rotating shaft (4) and the central axis of the auger (20). The pulleys on both sides are connected by toothed belt transmission.

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