A forming wire edge belt slurry reduction device

Abstract

The utility model relates to papermaking equipment technical field discloses a kind of reducing forming wire edge part with pulp device, including with suction roll transmission connection electric push rod, the inductor of detecting suction roll position, and automatic valve in series on spray water pipe, and electric connection inductor and automatic valve, to link suction roll lifting action with the start-stop of spray system with the production state of equipment represented by it. Device also includes the adjusting locking mechanism of being composed of regulator, connecting block and locking block, for adjusting and fixed the spray angle of high-pressure spray head. The utility model solves the problem that the existing technology in spraying device still continues to spray when equipment shutdown, water resource waste, the utility model can automatically start and stop spraying according to production state, realizes intelligent water saving, effectively reduces production cost, while, adjustable spray head angle also guarantees the cleaning effect of high-efficiency stability, and effectively prolongs the service life of forming wire.

Description

Technical Field

[0001] This utility model relates to the field of papermaking equipment technology, and in particular to a device for reducing pulp carryover at the edge of the forming wire. Background Technology

[0002] In the modern papermaking industry, the forming wire, as a key component that carries and initially dewaters wet pulp, directly affects the quality of paper and the stability of production. During the operation of the forming wire, some pulp inevitably adheres to and remains on the edge areas; this is called edge pulp.

[0003] When the forming wire carries these paper edge pulps down to the return roll area, if it is not effectively cleaned, the wet pulp will continue to accumulate and harden under pressure. This will not only squeeze and wear down the expensive forming wire, shortening its service life, but may also fall off and mix into the pulp circulation system, adversely affecting subsequent production.

[0004] To address this issue, existing technologies typically employ high-pressure water spraying to rinse the edges of the forming wire. By using fixed spray pipes and nozzles, a continuous stream of water is sprayed to peel off and wash away the adhering paper edge pulp. This method effectively achieves the cleaning objective to a certain extent, ensuring smooth production.

[0005] However, existing spray cleaning devices have significant shortcomings in their control methods. These devices' spray systems are often linked to the main power supply of the paper machine, operating continuously once started, or requiring manual start-up and shutdown. This means that the spray system continuously consumes water resources regardless of whether the paper machine is in normal production mode. For example, during non-production periods such as when the equipment is stopped, paper breaks are being addressed, or forming wires or felts are being replaced, this unnecessary spraying continues.

[0006] This continuous spraying operation results in the ineffective consumption of a large amount of clean water, which not only directly increases water bills and wastewater treatment costs, bringing unnecessary economic burdens to enterprises, but also goes against the current development trend of energy conservation, emission reduction and green environmental protection in industrial production.

[0007] Therefore, this utility model proposes a device to reduce the amount of slurry on the edge of the forming mesh, in order to overcome the shortcomings of the prior art. Utility Model Content

[0008] In view of the problem that the spraying system of the existing device for reducing slurry at the edge of the forming mesh cannot automatically start and stop according to the actual production status of the equipment, and continues to spray during non-production periods such as shutdown or mesh replacement, resulting in water waste and increased production costs, this utility model aims to provide a device for reducing slurry at the edge of the forming mesh with an improved structure that can effectively solve the above problems.

[0009] This utility model provides a device for reducing slurry accumulation at the edges of a forming mesh, comprising: a forming mesh, a suction roller, a spray pipe, a high-pressure nozzle; as well as an automatic valve, an electric push rod, and a sensor.

[0010] The automatic valve, electric actuator, and sensor together constitute an automatic control system.

[0011] Furthermore, the output end of the electric push rod is connected to the suction roller, the sensor is located at the position that can sense the lifting and lowering of the suction roller, the automatic valve is connected in series with the spray water pipe, and the signal output end of the sensor is electrically connected to the control end of the automatic valve.

[0012] Preferably, the device further includes a nozzle angle adjustment mechanism, which includes an adjuster and a connecting block. One end of the connecting block is rotatably connected to the high-pressure nozzle, and the other end is drively connected to the adjuster.

[0013] Preferably, the device further includes a housing and a fixing block, both of which are provided with threaded grooves; the adjuster is integrally formed with a locking block, the outer surface of which is provided with threads that cooperate with the threaded grooves.

[0014] Preferably, the high-pressure nozzle is fixedly installed on the water storage tank, the water storage tank is in fluid communication with the spray water pipe, and the connecting block is connected to the outer wall of the water storage tank.

[0015] Preferably, the running path of the forming mesh includes a return roller, and the spray water pipe and the high-pressure nozzle are located below the return roller.

[0016] Preferably, a vacuum roll is provided upstream of the return roll on the running path of the forming mesh.

[0017] Preferably, the apparatus further includes a felt, and the suction roller is used to transfer the paper web formed on the forming wire onto the felt.

[0018] Preferably, a shoe press is also provided on the running path of the felt.

[0019] This utility model has the following beneficial effects: 1. In this utility model, by setting up sensors, electric push rods and automatic valves, and linking the start and stop of the spraying system with the lifting and lowering state of the suction roller, the problem of the existing spraying device continuing to spray in non-production states such as shutdown or screen replacement is solved, which leads to a large waste of water resources and increased production costs. The technical effect of intelligent control of spraying start and stop, significant water conservation and reduced operating costs is achieved.

[0020] 2. In this utility model, by setting an adjustable nozzle angle adjuster, a connecting block, and a locking block and threaded groove for fixing the position, the problem of low cleaning efficiency caused by the fixed nozzle angle in the prior art, which cannot adapt to different working conditions, and is prone to positional displacement due to equipment vibration is solved. The technical effect of ensuring that the spray water flow can efficiently wash the paper pulp at the optimal angle and can maintain the stability of the working state for a long time is achieved. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of a device for reducing the amount of slurry on the edge of a forming mesh, as proposed in this utility model. Figure 2 This is a schematic diagram of a felt fabric for reducing the amount of slurry on the edge of a forming mesh, as proposed in this utility model. Figure 3 This is a schematic diagram of an electric push rod for reducing the amount of slurry on the edge of a forming mesh, as proposed in this utility model. Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of an adjuster for reducing the amount of slurry on the edge of a forming mesh, as proposed in this utility model. Legend: 1. Outer shell; 2. Spray water pipe; 3. Automatic valve; 4. Return roller; 5. Vacuum coiled roller; 6. Forming net; 7. High-pressure nozzle; 8. Suction roller; 9. Shoe pressure; 10. Felt; 11. Electric push rod; 12. Sensor; 13. Water storage tank; 14. Connecting block; 15. Regulator; 16. Locking block; 17. Fixing block; 18. Threaded groove. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0023] Example: Please refer to Figures 1 to 5 This utility model provides a device for reducing slurry on the edge of a forming mesh, which aims to solve the problem that existing cleaning devices for slurry on the edge of forming mesh cannot automatically start and stop according to the production status, resulting in water waste.

[0024] like Figure 1As shown, this device for reducing pulp residue at the edge of the forming wire is applied in papermaking equipment with a forming wire 6. The device includes a spray pipe 2 located on one side of the running path of the forming wire 6, and a suction roller 8 that is vertically mounted above the forming wire 6. A high-pressure nozzle 7 is connected to the spray pipe 2. The core of the device is an automatic control system that links the spray system with the equipment's operating status. This automatic control system includes an electric push rod 11, a sensor 12, and an automatic valve 3. The output end of the electric push rod 11 is connected to the suction roller 8, driving the suction roller 8 to switch between a working position representing normal production and a non-working position representing shutdown. The sensor 12 is located at... The sensor 12 is electrically connected to the control terminal of the automatic valve 3 at the lifting position of the suction roller 8, and is used to output a corresponding control signal according to the position of the suction roller 8. The automatic valve 3 is connected in series in the pipeline of the spray water pipe 2, and is used to receive the control signal from the sensor 12 and perform opening or closing actions. Specifically, when the electric push rod 11 drives the suction roller 8 to descend to the working position, the sensor 12 senses this position and outputs an opening signal. This signal triggers the automatic valve 3 to open through the electrical connection path, thereby supplying water to the spray water pipe 2. When the electric push rod 11 drives the suction roller 8 to rise to the non-working position, the sensor 12 outputs a closing signal, triggering the automatic valve 3 to close and cut off the water supply.

[0025] To further improve cleaning efficiency and ensure its stability, the device for reducing slurry residue at the edge of the forming mesh also includes a nozzle angle adjustment mechanism and its locking structure. The detailed technical solution is described below: Please refer to the following carefully. Figure 4 and Figure 5The nozzle angle adjustment mechanism includes an adjuster 15 and a connecting block 14. The high-pressure nozzle 7 is fixedly mounted on a water storage tank 13, which is in fluid communication with the spray pipe 2. One end of the connecting block 14 is rotatably connected to the outer wall of the water storage tank 13, and the other end is drive-connected to the adjuster 15. By operating the adjuster 15, the connecting block 14 can be moved, thereby causing the water storage tank 13 to swing around its rotatable connection point with the connecting block 14, thus changing the spray angle of the high-pressure nozzle 7 relative to the forming mesh 6 to adapt to the optimal cleaning requirements under different working conditions. To fix the adjusted angle, the... The device is also equipped with a locking structure, which includes a housing 1, a fixing block 17, and a locking block 16 disposed on the regulator 15. Threaded grooves 18 are provided on both the housing 1 and the fixing block 17. The regulator 15 is integrally formed with the locking block 16, and the outer surface of the locking block 16 is provided with threads that cooperate with the threaded grooves 18. When the regulator 15 is adjusted to the predetermined position, the locking block 16 is rotated so that it is screwed into the threaded grooves 18 through the threaded engagement, thereby firmly locking the position of the regulator 15. This structure of adjustment and locking ensures that the sprayed water can act on the paper pulp efficiently and stably.

[0026] Based on the above embodiments, the present invention may further include the following preferred technical solutions: As a preferred layout option, please refer to Figure 1 A return roller 4 is installed on the running path of the forming wire 6. The overall structure of the spray water pipe 2 and the high-pressure nozzle 7 is located below the return roller 4. This arrangement facilitates the rinsing of the edges of the forming wire 6 as it moves downward after bearing the pulp. At the same time, a vacuum roller 5 is also installed upstream of the return roller 4 on the running path of the forming wire 6 for preliminary dewatering of the wet pulp on the forming wire 6.

[0027] As a further preferred embodiment, please refer to Figure 1 and Figure 2 The device also includes a felt 10. When the suction roller 8 is in the working position, it picks up the wet paper web formed on the forming wire 6 after the vacuum roll 5 has been initially dewatered and transfers it to the felt 10, which continues to run with the felt 10. In order to further dewater the paper web, a shoe press 9 is also set in the running path of the felt 10. The wet paper web enters the shoe press 9 with the felt 10 for pressing and dewatering.

[0028] Working principle: In the papermaking process, the forming wire 6 carries the pulp. After initial dewatering by the vacuum roll 5, the pulp at the edge moves downward with the forming wire 6 to the return roll 4 area. As the equipment is in normal production, the electric push rod 11 drives the suction roller 8 to descend to its working position to pick up the paper web on the forming wire 6 and transfer it to the felt 10. The paper web then enters the shoe press 9 for deep dewatering. At the same time, the sensor 12 set on the lifting path of the suction roller 8 will detect that the suction roller 8 is in the working position. Then, through the electrical connection between it and the automatic valve 3, the automatic valve 3 is triggered to open, and the spray water pipe 2 is supplied with water. The high-pressure nozzle 7 on it sprays high-pressure water to strongly wash and peel off the pulp at the edge of the forming wire 6.

[0029] When it is necessary to stop the machine, change the screen, or deal with paper breakage, the electric push rod 11 drives the suction roller 8 to lift up to the non-working position. The sensor 12 immediately detects this position change and triggers the automatic valve 3 to close, cutting off the water supply to the spray pipe 2, thereby stopping the spraying. Through this automatic linkage control of the lifting state of the suction roller 8 with the start and stop of the spraying system, the spraying cleaning is precisely achieved only when necessary, effectively solving the problem of water waste.

[0030] In addition, to achieve the best cleaning effect, the operator can operate the regulator 15 to swing the water tank 13 on which the high-pressure nozzle 7 is installed through the connecting block 14, thereby adjusting the spray angle of the high-pressure nozzle 7. After reaching the ideal angle, the locking block 16, which is integrally set with the regulator 15, is rotated to engage with the threaded groove 18 on the outer shell 1 and the fixing block 17 and lock it in place, thereby maintaining the long-term stability of the spray angle.

[0031] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A device for reducing slurry on the edge of a forming mesh, comprising a forming mesh (6), a suction roller (8) that is vertically and elliptically disposed above the forming mesh (6), and a spray pipe (2) disposed on one side of the running path of the forming mesh (6) and provided with a high-pressure nozzle (7). Its features are, The device further includes an automatic control system, the automatic control system comprising: An automatic valve (3) is connected in series with the spray pipe (2) to control its opening and closing; An electric push rod (11) is connected to the suction roller (8) at its output end and is used to drive the suction roller (8) to rise and fall. And a sensor (12), which is located at the position of the suction roller (8) and is electrically connected to the control terminal of the automatic valve (3) to control the opening or closing of the automatic valve (3) according to the position of the suction roller (8) sensed.

2. The device for reducing slurry residue at the edge of a forming mesh according to claim 1, characterized in that, The device further includes a nozzle angle adjustment mechanism, the nozzle angle adjustment mechanism comprising: Regulator (15); And a connecting block (14), one end of which is rotatably connected to the high-pressure nozzle (7) and the other end is drive-connected to the regulator (15) for adjusting the spray angle of the high-pressure nozzle (7) by operating the regulator (15).

3. The device for reducing slurry residue at the edge of a forming mesh according to claim 2, characterized in that, The device also includes a housing (1) and a fixing block (17), both of which have threaded grooves (18); the regulator (15) has an integrally formed locking block (16), the outer surface of which has threads that cooperate with the threaded grooves (18) for locking the regulator (15) after adjustment.

4. The device for reducing slurry residue at the edge of a forming mesh according to claim 2, characterized in that, The high-pressure nozzle (7) is fixedly installed on the water storage tank (13), the water storage tank (13) is in fluid communication with the spray water pipe (2), and the connecting block (14) is connected to the outer wall of the water storage tank (13).

5. The device for reducing slurry residue at the edge of a forming mesh according to claim 1, characterized in that, The running path of the forming mesh (6) includes a return roller (4), and the spray water pipe (2) and the high-pressure nozzle (7) are located below the return roller (4).

6. The device for reducing slurry residue at the edge of a forming mesh according to claim 5, characterized in that, A vacuum roll (5) is provided upstream of the return roll (4) on the running path of the forming net (6).

7. The device for reducing slurry residue at the edge of a forming mesh according to claim 1, characterized in that, The device also includes a felt (10), and the suction roller (8) is used to transfer the paper web formed on the forming wire (6) onto the felt (10).

8. The device for reducing slurry residue at the edge of a forming mesh according to claim 7, characterized in that, A shoe press (9) is also provided on the running path of the felt (10).

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