A high frequency deflaking machine with pre-treatment function

Abstract

The present invention relates to a high-frequency deflaking machine with a pretreatment function, comprising a machine body, a fixed grinding disc and a rotating grinding disc arranged in the machine body, a pulp inlet pipe and a pulp outlet pipe, wherein the fixed grinding disc is connected to the end of the machine body, the rotating grinding disc is coaxially arranged with the fixed grinding disc, a rotating mechanism is fixedly connected to the center of the rotating grinding disc, the rear side of the rotating grinding disc is connected to a pulp inverted cone pipe, and the pulp inlet pipe is arranged above the rear side of the rotating grinding disc; the small opening of the pulp inverted cone pipe faces the rotating grinding disc side, is connected to the pulp inlet pipe at the top, and is connected to a funnel-shaped heavy slag collecting trough at the bottom, the lower part of the funnel of the heavy slag collecting trough is connected to a slag discharge valve, the heavy slag is separated in advance through the heavy slag collecting trough, and primary deflaking is completed, thereby pre-separating and collecting impurities in fiber bundles (clusters), and timely removing the heavy slag, thereby alleviating the screening requirements of subsequent equipment.

Description

Technical Field

[0001] The invention relates to the field of high-frequency deflaking machine equipment, and in particular to a high-frequency deflaking machine with a pre-processing function. Background Art

[0002] High frequency deflaking machine is a kind of equipment that can separate fiber groups into single fibers and wet them. Figure 1 As shown in the figure, the conventional high-frequency deflaking machine process is as follows: the pulp flow enters the machine body from the pulp inlet, passes through the deflaking area between the stator and the rotor for deflaking treatment, and enters the next equipment in the system from the pulp outlet; because the pulp enters from the stator side, the pulp only flows on the inner surface of the stator and the outer surface of the rotor, resulting in that the fiber bundles (clusters) in the pulp cannot be fully deflaked, and the heavy slag in the pulp and the impurities mixed in the fiber clusters cannot be separated and removed; the reason for the analysis is that the pulp enters from the stator side, and only the inner teeth of the stator and the outer teeth of the rotor act, resulting in a short deflaking time. At the same time, the gap between the stator and the rotor is too small, and it does not have the function of preliminarily deflaking the fiber clusters and fiber bundles, resulting in heavy slag and coarse fiber bundles staying inside the equipment. Because there is no heavy slag separation mechanism during the pulping process, the heavy slag mixed in the pulp cannot be effectively separated, which is easy to cause equipment blockage.

[0003] Conventional high-frequency deflaking machines have another problem. They compensate for the wear of the stator and rotor by driving the movement of the rotor through the reciprocating movement of the main shaft. The main shaft and the bearing chamber slide back and forth in the bearing hole of the transmission bracket as a whole when the blade is advanced and retracted. Since they can slide, there must be a gap. This gap will cause the rotor to vibrate when it is working. Such vibration causes the pulping gap to fluctuate, which directly affects the pulping quality. At the same time, the vibration of the rotor will cause the rotary seal to be damaged, resulting in pulp leakage. In addition to pollution and waste of resources, the leakage of pulp requires frequent adjustment of the packing seal and the amount of cooling water because the rotary seal uses a packing seal. The seal is prone to leakage, which makes maintenance frequent and wastes manpower. Summary of the invention

[0004] The purpose of the present invention is to provide a high-frequency deflaking machine with a pretreatment function, which can prolong the deflaking path and deflaking time of the slurry by changing the position of the slurry inlet pipe, so that the slurry can be fully deflaked and the screening requirements of subsequent equipment can be alleviated.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A high-frequency deflaking machine with a pre-treatment function comprises a machine body, a fixed grinding disc and a rotating grinding disc arranged in the machine body, a slurry inlet pipe and a slurry outlet pipe, the fixed grinding disc is connected to the end of the machine body, the rotating grinding disc is coaxially arranged with the fixed grinding disc, a rotating mechanism is fixedly connected to the center of the rotating grinding disc, the rear side of the rotating grinding disc is connected to a slurry inverted cone pipe, and the slurry inlet pipe is arranged above the rear side of the rotating grinding disc; the small opening of the slurry inverted cone pipe faces the rotating grinding disc side, the upper part is connected to the slurry inlet pipe, and the lower part is connected to a funnel-shaped heavy slag collecting trough, and the lower part of the funnel of the heavy slag collecting trough is connected to a slag discharge valve.

[0007] Preferably, the rotating grinding disc includes a hub, a rotor and a main shaft, the hub is connected to the rotating mechanism through the main shaft, the hub includes a spoke plate, a sleeve and an outer ring, the spoke plate is a scattered spoke structure, adjacent spokes are provided with a through channel, the sleeve and the spoke plate are fixedly connected by a rib plate, the outer ring and the small opening of the slurry inverted cone pipe form a dynamic sealing structure with a small gap, a plum blossom-shaped through hole is provided in the middle of the rotor, the rotor is connected to the hub through a fastener, and a flow hole is formed at the channel after the rotor and the hub are assembled.

[0008] Preferably, the sleeve of the wheel hub is connected to the main shaft through a key, and an axial end pressure cover is provided at the end, the axial end pressure cover abuts the sleeve of the wheel hub and is connected to the main shaft through fasteners; a pressure cover is provided at the center of the spoke plate of the wheel hub, the pressure cover is connected to the spoke plate of the wheel hub through fasteners, and a seal is provided at the connection.

[0009] Preferably, a flushing water pipe is provided in the horizontal direction of the heavy slag collecting tank.

[0010] Preferably, the fixed grinding disc includes a stator, a stator seat connected to the stator via fasteners, and a stator seat fixing plate connected to the stator seat via fasteners, a plurality of stator seat baffles are circumferentially spaced on the stator seat, and the stator seat baffles are connected to the stator seat via fasteners.

[0011] Preferably, the fixed grinding disc further comprises an adjusting device for adjusting the horizontal movement of the stator seat, wherein the adjusting device is arranged on the rear side of a machine cover movably sleeved with the stator seat fixing plate, and is fixedly connected with the stator seat fixing plate via a long screw.

[0012] Preferably, a guide rubber and a combined seal are provided at the connection between the stator seat fixing plate and the machine cover.

[0013] The technical effect of the present invention is that the slurry is fed into the slurry from the slurry inlet pipe on the rear side of the rotating grinding disc, the heavy slag is separated in advance through the heavy slag collecting groove, and the primary deflaking is completed, so that the impurities of the fiber bundle (clump) force are pre-separated and collected, and the heavy slag is removed in time. The screened slurry enters the deflaking area between the fixed grinding disc and the rotating grinding disc for further deflaking, and graded deflaking and impurity collection are achieved, so that the slurry is fully deflaked, and the screening requirements of subsequent equipment are reduced through the graded collection of impurities; at the same time, the wear amount of the rotor and the stator is compensated by moving the stator, the high-speed rotating main shaft no longer has axial movement, and there is no radial clearance of the sliding fit, which ensures the reliability of the rotating seal while ensuring the rotation accuracy of the rotor and the stable gap of the moving and fixed gear rings. The stability of the grinding quality makes it possible to use mechanical seals and sealing water flow meters, thereby realizing automatic control, ensuring efficient operation of the equipment and saving manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a high frequency deflaker in the prior art and the direction of working pulp flow;

[0015] Figure 2 It is a schematic diagram of the structure of the present invention and the direction of the working slurry flow;

[0016] Figure 3 for Figure 2 A partial cross-sectional view;

[0017] Figure 4 It is a schematic diagram of the hub structure of the present invention and a cross-sectional view in the direction of A;

[0018] Figure 5 It is a schematic diagram of the rotor structure of the present invention;

[0019] Figure 6 This is a schematic diagram of the structure of the hub and rotor after assembly of the present invention;

[0020] Figure 7 It is a structural schematic diagram of the stator seat and the stator seat baffle of the present invention and a cross-sectional view along the direction A.

[0021] In the accompanying drawings: slurry inlet pipe 1, slurry inverted cone pipe 2, heavy slag collecting tank 3, slag discharge valve 4, opening 5, main shaft 6, containerized mechanical seal 7, wheel hub 8, rotor 9, stator 10, stator seat 11, stator seat baffle 12, stator seat fixing plate 13, machine cover 14, adjustment device 15, frame 16, bottom plate 17, flushing water pipe 18, slurry outlet pipe 19, key 20, shaft end pressure cover 21, pressure cover 22, long screw 23, guide ring 24, combined seal 25, frame side plate 26, machine body 27, plum blossom-shaped through hole 29, flow hole 30, rib plate 31, spoke plate 32, sleeve 33, channel 34, outer ring 35. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] like Figure 2 As shown, a high-frequency deflaking machine with a pre-treatment function comprises a machine body 27, a fixed grinding disc and a rotating grinding disc arranged in the machine body 27, a slurry inlet pipe 1, and a slurry outlet pipe 19. The fixed grinding disc is connected to the end of the machine body 27, and the rotating grinding disc and the fixed grinding disc are coaxially arranged in the machine body 27. A rotating mechanism is fixedly connected to the center of the rotating grinding disc, and the rear side of the rotating grinding disc is connected to a slurry inverted cone pipe 2, and the slurry inlet pipe 1 is arranged above the rear side of the rotating grinding disc; the small opening of the slurry inverted cone pipe 2 faces the rotating grinding disc side, is connected to the slurry inlet pipe 1 at the top, and is connected to a funnel-shaped heavy slag collecting tank 3 at the bottom, and the lower part of the funnel of the heavy slag collecting tank 3 is connected to a slag discharge valve 4; the slurry enters the slurry inverted cone pipe 2 from the rear side of the rotating grinding disc, and due to the slurry inverted cone pipe 2 The inverted cone structure has an inverted cone structure, and the specific gravity of impurities is different from that of slurry. The heavy slag falls into the funnel-shaped (large upper opening and small lower opening) heavy slag collecting tank 3 along the inner wall of the inverted cone pipe 2 for pulp inlet. The lower part of the funnel of the heavy slag collecting tank 3 is connected to the slag discharge valve 4. The slag discharge valve 4 is used to control the discharge of heavy slag. The lower end pipeline of the slag discharge valve 4 extends out from the opening 5 at the bottom plate 17 of the frame 16. The slurry carried by the heavy slag is discharged through the lower end pipeline of the slag discharge valve 4, thereby separating the heavy slag mixed in the slurry, completing the preliminary separation of the heavy slag, and fully stripping the heavy slag in the slurry to realize the collection of heavy slag, alleviating the screening requirements of subsequent equipment, and reducing the wear between the rotor 9 and the stator 10, ensuring the safe operation of the equipment, and at the same time ensuring the operating environment of the equipment.

[0024] like Figure 4 , Figure 5 , Figure 6As shown, the rotating grinding disc includes a hub 8, a rotor 9 and a main shaft 6. The hub 8 is connected to the rotating mechanism through the main shaft 6. The hub 8 includes a spoke plate 32 with a scattered spoke structure, an inner ring sleeve 33 and an outer ring 35 of a dynamic sealing structure that forms a small gap with the small opening of the pulp inverted cone pipe (2). There are through channels 34 between adjacent spokes of the spoke plate 32. The sleeve 33 and the spoke plate 32 are fixedly connected by a reinforcing rib plate 31. The sleeve 33, the spoke plate 32 and the reinforcing rib plate 31 can also be cast as one piece. A plum blossom-shaped through hole 29 is provided in the middle of the rotor 9. The rotor 9 is connected to the hub 8 by bolts. After the rotor 9 and the hub 8 are assembled, a flow hole 30 is formed at the channel. The outer ring 35 forms a dynamic sealing structure with a small gap with the small opening of the pulp inlet inverted cone pipe (2), so that the pulp flows in a closed cavity. Due to the narrow gap between the rotor 9 and the frame side plate 26 and the high-speed rotation of the rotor 9, the pulp forms a liquid water film seal between the rotor 9 and the frame side plate 26, thereby ensuring that the pulp passes through the flow hole 30 formed after the hub 8 and the rotor 9 are assembled. When the pulp passes through the flow hole 30, the rotating scattered spokes disperse the fiber bundles (clusters) and peel off the impurities mixed in the fiber bundles (clusters), thereby completing the initial dispersion process.

[0025] like Figure 2 As shown, the inner ring of the hub 8 is connected to the main shaft 6 through a key 20, and a shaft end pressure cover 21 is provided at one end. The shaft end pressure cover 21 abuts against the inner ring of the hub 8 and is connected to the main shaft 6 through fasteners to ensure that there will be no axial movement when the main shaft 6 drives the hub 8 and the rotor 9 to rotate; a pressure cover 22 is provided at the center of the outer ring of the hub 8, and the pressure cover 22 is connected to the outer ring of the hub 8 through fasteners, and a seal is provided at the connection to achieve sealing protection for the shaft 6 and prevent corrosion of the shaft 6 by the slurry.

[0026] like Figure 2 , Figure 3 As shown, a flushing water pipe 18 is provided in the horizontal direction of the funnel portion of the heavy slag collecting tank 3 , and the flushing water pipe 18 is used to impact the heavy slag into the funnel of the heavy slag collecting area to prevent the slurry from being deposited in the heavy slag collecting tank 3 .

[0027] like Figure 2 , Figure 7As shown, the fixed grinding disc includes a stator 10, a stator seat 11 connected to the stator 10 by fasteners, and a stator seat fixing plate 13 connected to the stator seat 11 by fasteners; the slurry bundle (cluster) after preliminary debonding and the impurities stripped out flow to the stator seat 11 and the stator seat fixing plate 13 in the debonding area, and will enter the debonding area between the stator 10 and the rotor 9. After the slurry flows out from the flow hole, the slurry flow direction changes after encountering the stator seat fixing plate 13 blocking it, and the slurry and impurities are separated at this position, and the stator 10 The space formed between the stator seat 11 and the stator seat fixing plate 13 collects impurities again, and the impurities collected in this area need to be cleaned regularly; a plurality of stator seat baffles 12 are arranged at intervals on the stator seat 11 in the circumferential direction, and the stator seat baffles 12 are connected to the stator seat 11 through fasteners. The stator seat baffles are used to reduce the cavitation damage to the stator seat fixing plate 13 caused by the increase of flow velocity and pressure when the slurry changes direction. After the slurry passes through the gap between the inner surface of the stator 10 and the outer surface of the rotor 9 for dispersion, it flows out from the slurry outlet pipe 19 and enters the subsequent equipment.

[0028] like Figure 2 As shown, the outer ring of the stator seat fixing plate is movably sleeved with a machine cover, the inner cylindrical outer wall is sleeved with a central hole of the machine cover and is movably connected, the machine cover is fixedly connected to the machine body 27, and the rear side is fixedly connected to an adjusting device for adjusting the horizontal movement of the fixed grinding disc. The moving part of the adjusting device is fixedly connected to the stator seat fixing plate 13 through a long screw. The adjusting device is provided with a power mechanism, which drives the moving part to drive the fixed grinding disc to move horizontally. When the rotor 9 and the stator 10 are worn, the fixed grinding disc can be moved by the adjusting device 15, thereby adjusting the rotor 9 and the stator. The toothed disc clearance of 10 is used to compensate for the wear between the rotor 9 and the stator 10. Since the slurry inlet pipe 1 is between the containerized mechanical seal 7 and the rotor 9, if the main shaft 6 is moved axially to drive the rotor 9 to adjust the toothed disc clearance, the rotation of the main shaft 6 will be unstable due to the existence of the clearance, and it is easy to leak slurry. The main shaft 6 does not move axially, but moves at the stator 10, which ensures the rotation accuracy and does not generate vibration. The containerized mechanical seal 7 and the sealing water flow meter can be used to realize automatic control, which can save manpower while ensuring the efficient operation of the equipment.

[0029] A guide ring 24 is provided at the joint between the stator seat fixing plate 13 and the machine cover 14. The guide ring 24 is made of rubber. A combined seal 25 is provided at the joint between the outer ring and the machine cover 14. The guide ring 24 ensures that the stator seat 11 moves smoothly and ensures the geometric accuracy of the movement of the stator 10. The combined seal 25 ensures that the slurry does not leak out during the movement.

Claims

1. A high-frequency deflaking machine with a pre-treatment function, comprising a machine body, a fixed grinding disc and a rotating grinding disc arranged in the machine body, a pulp inlet pipe, and a pulp outlet pipe, wherein the fixed grinding disc is connected to the end of the machine body, the rotating grinding disc is coaxially arranged with the fixed grinding disc, and a rotating mechanism is fixedly connected to the center of the rotating grinding disc, characterized in that: The rear side of the rotating grinding disc is connected to the pulp inlet inverted cone pipe, and the pulp inlet pipe is arranged above the rear side of the rotating grinding disc; the small opening of the pulp inverted cone pipe faces the rotating grinding disc, is connected to the pulp inlet pipe at the top, and is connected to the funnel-shaped heavy slag collection tank at the bottom, the lower part of the funnel of the heavy slag collection tank is connected to the slag discharge valve, and the heavy slag collection tank is provided with a flushing water pipe in the horizontal direction; the rotating grinding disc includes a hub, a rotor and a main shaft, the hub is connected to the rotating mechanism through the main shaft, the hub includes a spoke plate, a sleeve and an outer ring, and the spoke plate is The scattering spoke structure has a through channel between adjacent spokes, the sleeve and the spoke plate are fixedly connected by a rib plate, the outer ring and the small opening of the slurry inverted cone tube form a dynamic sealing structure with a small gap fit, a plum blossom-shaped through hole is provided in the middle of the rotor, the rotor is connected to the hub by a fastener, and a flow hole is formed at the channel after the rotor and the hub are assembled; the fixed grinding disc includes a stator, a stator seat connected to the stator by a fastener, a stator seat fixing plate connected to the stator seat by a fastener, and a stator seat on the stator seat A plurality of stator seat baffles are arranged at intervals in the circumferential direction, and the stator seat baffles are connected to the stator seat by fasteners; when the slurry passes through the flow hole, the rotating scattering spokes de-stack the fiber bundles and peel off the impurities in the fiber bundles, thus completing the initial de-stack process; the slurry bundles after the initial de-stack and the impurities peeled off flow to the stator seat and the stator seat fixing plate in the de-stack area, and then enter the de-stack area between the stator and the rotor. After the slurry flows out from the flow hole, the slurry flows into the stator seat fixing plate when it is blocked. The slurry flow direction changes after that, and the slurry and impurities are separated at this position. The impurities are collected again in the space formed between the stator, the stator seat and the stator seat fixing plate. A plurality of stator seat baffles are arranged at intervals on the stator seat in the circumferential direction. The stator seat baffles are connected to the stator seat through fasteners. The stator seat baffles are used to reduce the cavitation damage to the stator seat fixing plate caused by the increase of flow velocity and pressure when the slurry changes direction. After the slurry passes through the gap between the inner surface of the stator and the outer surface of the rotor for dispersion, it flows out from the slurry outlet pipe and enters the subsequent equipment.

2. A high-frequency deflaking machine with pre-processing function as claimed in claim 1, characterized in that: The sleeve of the wheel hub is connected to the main shaft through a key, and an axial end pressure cover is provided at the end, which abuts against the sleeve of the wheel hub and is connected to the main shaft through fasteners; a pressure cover is provided at the center of the spoke plate of the wheel hub, and the pressure cover is connected to the spoke plate of the wheel hub through fasteners, and a seal is provided at the connection.

3. A high-frequency deflaking machine with a pre-processing function as claimed in claim 1, characterized in that: The outer circular ring of the stator seat fixing plate is movably sleeved with a machine cover, the inner cylindrical outer wall is movably sleeved with the center hole of the machine cover, the machine cover is fixedly connected to the machine body, and the rear side of the machine cover is fixedly connected to an adjusting device for adjusting the horizontal movement of the stator seat fixing plate. The moving part of the adjusting device is fixedly connected to the stator seat fixing plate through a long screw, and the adjusting device controls its moving part to make the stator seat fixing plate move horizontally along the movably sleeved connection between the stator seat fixing plate and the machine cover.

4. A high-frequency deflaking machine with pre-processing function as claimed in claim 1, characterized in that: A guide ring is provided at the connection between the stator seat fixing plate and the machine cover movable sleeve, and a combined sealing member is provided at the connection between the outer circular ring and the machine cover movable sleeve.

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