A dewatering structure for a wire paper machine

Abstract

This utility model discloses a dewatering structure for a long-wire paper machine, belonging to the technical field of long-wire paper machines. It includes a machine housing, with four conveying rollers rotatably connected to the inner cavity of the housing. A forming screen is fitted around the outer side of the four conveying rollers. A first reduction motor is fixedly installed on the outer side of the housing. The output shaft of the first reduction motor is connected to one end of a conveying roller shaft via a coupling. Two support rollers are rotatably connected to the inner cavity of the housing. In this utility model, when pulp is added to the forming screen, a second reduction motor drives a rotating rod and a push rod to rotate. The push rod pushes the forming screen to make the pulp on top more uniform, while simultaneously causing water in the pulp to fall due to vibration. An electric telescopic rod drives a pressing roller to move downwards to press the pulp on the forming screen. The cooperation of the support rollers and the pressing rollers dewaters the pulp on the forming screen, resulting in good practicality.

Description

Technical Field

[0001] This utility model relates to the field of long-wire paper machine technology, and more specifically, to a dewatering structure for a long-wire paper machine. Background Technology

[0002] Frozen foods require low-temperature preservation (such as beverages, dairy products, frozen drinks, seafood, meat, etc.), and frozen food packaging paperboard is an important packaging material for these frozen foods. The waterproof paperboard used can be divided into hydrophobic corrugated paperboard, water-proof corrugated paperboard, and water-resistant corrugated paperboard according to the degree of waterproofing and waterproofing processing methods. The fourdrinier paper machine is a machine used for papermaking and is the most widely used papermaking machine.

[0003] A search revealed that utility model patent CN216275009U discloses a dewatering structure for a wire-type paper machine, including a transport module, a vacuum dewatering module, and a secondary dewatering module. The transport module is fixedly connected to the vacuum dewatering module, and the secondary dewatering module is located above the transport module. The secondary dewatering module includes a mounting plate, telescopic rods, a squeeze roller, a mounting base, and a papermaking blanket. Two telescopic rods are fixedly connected to the lower surface of the mounting plate, and the moving ends of the telescopic rods are fixedly connected to the upper surface of the mounting base. The two mounting bases are rotatably connected to both ends of the squeeze roller. The papermaking blanket is located below the squeeze roller and is tangent to the circumferential side of the squeeze roller. This patent effectively squeezes and dewaters the pulp by using the telescopic rods to drive the squeeze roller downwards and cooperate with the rotating drum. This facilitates the papermaking blanket to carry the paper into subsequent processes. A vacuum pump extracts air from the vacuum chamber to create negative pressure, which, in conjunction with a filter membrane, filters out the water from the pulp. However, the above patent still has the following shortcomings: relying solely on vacuum negative pressure adsorption and the squeezing of the squeeze roller to dewater the pulp is not very effective. Therefore, we have proposed a dewatering structure for a long wire paper machine. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a dewatering structure for a wire paper machine.

[0005] To solve the above problems, this utility model adopts the following technical solution: a dewatering structure for a long-wire paper machine, including a machine housing, four conveying rollers rotatably connected to the inner cavity of the machine housing, a forming wire sleeved on the outer side of the four conveying rollers, a first reduction motor fixedly installed on the outer side of the machine housing, the output shaft of the first reduction motor being connected to one end of a conveying roller shaft via a coupling, two support rollers rotatably connected to the inner cavity of the machine housing, the top surfaces of the two support rollers being in contact with the inner surface of the forming wire, a water receiving box fixedly connected to the inner cavity of the machine housing, a drying mechanism provided at the end of the machine housing, a squeezing mechanism provided at the top of the machine housing, a water absorption mechanism provided in the inner cavity of the machine housing, multiple rotating rods rotatably connected to the inner cavity of the machine housing, multiple push rods fixedly connected to the sides of the multiple rotating rods, multiple second reduction motors fixedly installed on the outer side of the machine housing, the output shafts of the multiple second reduction motors being respectively connected to the ends of the multiple rotating rods via couplings, and a headbox provided at one end of the top of the machine housing.

[0006] As a preferred embodiment of this utility model, the drying mechanism includes two support frames fixedly connected to the end of the machine casing. Multiple electromagnetic heating rollers are rotatably connected to the inner side of the two support frames, and multiple third reduction motors are fixedly installed on the outer side of one support frame. The output shafts of the multiple third reduction motors are respectively connected to one end of the rotating shaft of the electromagnetic heating roller through a coupling. The other end of the multiple electromagnetic heating rollers is fixedly connected to a power supply line through an electric slip ring.

[0007] As a preferred embodiment of this utility model, the extrusion mechanism includes an arched frame fixedly connected to the top of the machine housing, an electric telescopic rod fixedly installed on the top surface of the arched frame, a U-shaped frame fixedly connected to the output end of the electric telescopic rod, and two extrusion rollers rotatably connected to the inner side of the U-shaped frame, with the two extrusion rollers respectively located directly above the two support rollers.

[0008] As a preferred embodiment of this utility model, the water absorption mechanism includes a water absorption box fixedly connected to the inner cavity of the casing and an air pump fixedly installed on the front of the casing. The input end of the air pump extends into the inner cavity of the water absorption box, and a water intake port is provided on the top of the water absorption box. A filter membrane is fixedly sleeved in the inner cavity of the water intake port.

[0009] As a preferred embodiment of this utility model, three drain valves are fixedly installed on the back of the housing, and the ends of the three drain valves extend into the inner cavities of the housing, the water suction box and the water receiving box, respectively.

[0010] In a preferred embodiment of this utility model, the side of the formed mesh is fitted to the inner wall of the machine casing.

[0011] Compared with the prior art, the advantages of this utility model are: (1) In this utility model, when the pulp is added to the forming wire, the second deceleration motor drives the rotating rod and push rod to rotate, and the push rod pushes the forming wire to make the pulp on the top of it uniform. At the same time, the water in the pulp is vibrated and falls off. In addition, the electric telescopic rod drives the extrusion roller to move down to extrude the pulp on the forming wire. The pulp on the forming wire is extruded and dehydrated by the cooperation of the support roller and the extrusion roller.

[0012] (2) In this utility model, the suction pump is used to generate suction force at the water inlet to absorb and dehydrate the paper. In addition, the third geared motor is used to drive the electromagnetic heating roller located below to rotate clockwise. The power supply line is used to energize multiple electromagnetic heating rollers to generate heat, and the heat is used to heat and dehydrate the paper, resulting in good dehydration quality. Attached Figure Description

[0013] Figure 1 is a schematic diagram of the overall structure of the front of this utility model.

[0014] Figure 2 is a schematic diagram of the overall structure of the back of this utility model.

[0015] Figure 3 is a schematic cross-sectional view of the present invention.

[0016] Figure 4 is a schematic diagram of the push rod of this utility model.

[0017] The following are the labels in the diagram: 1. Machine casing; 2. Drying mechanism; 3. Extrusion mechanism; 4. Conveyor roller; 5. Forming mesh; 6. First geared motor; 7. Headbox; 8. Water receiving box; 9. Water suction mechanism; 10. Rotating rod; 11. Push rod; 12. Second geared motor; 13. Support frame; 14. Electromagnetic heating roller; 15. Third geared motor; 16. Power supply line; 17. Water suction box; 18. Water suction port; 19. Filter membrane; 20. Air pump; 21. Support roller; 22. Arched frame; 23. Electric telescopic rod; 24. U-shaped frame; 25. Extrusion roller; 26. Drain valve. Detailed Implementation

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

[0019] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example 1

[0021] Please refer to Figures 1-4. A dewatering structure for a long-wire paper machine includes a housing 1. Four conveyor rollers 4 are rotatably connected to the inner cavity of the housing 1. A forming wire 5 is sleeved on the outer side of the four conveyor rollers 4. A first reduction motor 6 is fixedly installed on the outer side of the housing 1. The output shaft of the first reduction motor 6 is connected to one end of the shaft of a conveyor roller 4 via a coupling. Two support rollers 21 are rotatably connected to the inner cavity of the housing 1. The top surfaces of the two support rollers 21 are in contact with the inner surface of the forming wire 5. A water receiving box 8 is fixedly connected to the inner cavity of the housing 1. A drying mechanism 2 is provided at the end of the housing 1. A squeezing mechanism 3 is provided at the top of the housing 1. A water absorption mechanism 9 is provided in the inner cavity of the housing 1. Multiple rotating rods 10 are rotatably connected to the inner cavity of the housing 1. Multiple push rods 11 are fixedly connected to the sides of each of the multiple rotating rods 10. Multiple second reduction motors 12 are fixedly installed on the outer side of the housing 1. The output shafts of the multiple second reduction motors 12 are respectively connected to the multiple rotating rods 10 via couplings. The ends are connected, and a headbox 7 is provided at one end of the top of the casing 1.

[0022] In this embodiment, a controller is provided at the front of the housing 1 to control the device, and the device is powered by the power supply of an external device. This is prior art and will not be described in detail.

[0023] Specifically, please refer to Figures 1 to 3. The drying mechanism 2 includes two support frames 13 fixedly connected to the end of the housing 1. Multiple electromagnetic heating rollers 14 are rotatably connected to the inner side of the two support frames 13. Multiple third reduction motors 15 are fixedly installed on the outer side of one support frame 13. The output shafts of the multiple third reduction motors 15 are respectively connected to one end of the rotating shaft of the electromagnetic heating roller 14 through a coupling. The other end of the multiple electromagnetic heating rollers 14 is fixedly connected to a power supply line 16 through an electric slip ring.

[0024] In this embodiment, the electromagnetic heating rollers 14 are powered by the power supply line 16 so that the multiple electromagnetic heating rollers 14 generate heat to heat, dehydrate and dry the paper. The multiple electromagnetic heating rollers 14 are arranged vertically, and the third reduction motor 15 drives only the lower electromagnetic heating rollers 14.

[0025] Specifically, please refer to Figures 1 to 3. The extrusion mechanism 3 includes an arched frame 22 fixedly connected to the top of the housing 1. An electric telescopic rod 23 is fixedly installed on the top surface of the arched frame 22. A U-shaped frame 24 is fixedly connected to the output end of the electric telescopic rod 23. Two extrusion rollers 25 are rotatably connected to the inner side of the U-shaped frame 24. The two extrusion rollers 25 are located directly above the two support rollers 21.

[0026] In this embodiment, the electric telescopic rod 23 drives the U-shaped frame 24 and the extrusion roller 25 to move up and down, so that the extrusion roller 25 and the support roller 21 cooperate to extrude the pulp on the forming wire 5, so as to extrude and dewater the paper.

[0027] Specifically, please refer to Figures 1 and 3. The water suction mechanism 9 includes a water suction box 17 fixedly connected to the inner cavity of the housing 1 and an air pump 20 fixedly installed on the front of the housing 1. The input end of the air pump 20 extends into the inner cavity of the water suction box 17. A water suction port 18 is provided on the top of the water suction box 17. A filter membrane 19 is fixedly sleeved in the inner cavity of the water suction port 18.

[0028] In this embodiment, the top surface of the suction port 18 is flush with the top surfaces of the forming mesh 5 and the multiple electromagnetic heating rollers 14 located below, ensuring that the formed paper can move smoothly.

[0029] Specifically, please refer to Figures 2 and 3. Three drain valves 26 are fixedly installed on the back of the housing 1. The ends of the three drain valves 26 extend into the inner cavities of the housing 1, the water suction box 17, and the water receiving box 8, respectively.

[0030] In this embodiment, water is drained from the inner cavities of the casing 1, water receiving box 8, and water suction box 17 through three drain valves 26.

[0031] Specifically, please refer to Figure 1, where the side of the forming mesh 5 is attached to the inner wall of the housing 1.

[0032] In this embodiment, the inner wall of the housing 1 is used to limit the forming net 5 to prevent the forming net 5 from deviating on the conveying roller 4.

[0033] Working principle: In use, firstly, the first reduction motor 6 is started to drive a conveyor roller 4 to rotate. The conveyor roller 4 drives the forming wire 5 to rotate clockwise. At the same time, pulp is added from the headbox 7 onto the forming wire 5, and the forming wire 5 drives the pulp to move forward. Then, the second reduction motor 12 is started to drive the rotating rod 10 to rotate. The rotating rod 10 drives the push rod 11 to intermittently push the top of the forming wire 5, so that the pulp on the top of the forming wire 5 is vibrated and becomes uniform. At the same time, the water in the pulp falls through the forming wire 5 onto the water collection box 8. In addition, the electric telescopic rod 23 is started to drive the U-shaped frame 24 and the pressure roller 25 to move down. The pressure roller 25 and the support roller 21 work together to squeeze the pulp on the forming wire 5, thereby causing the water in the pulp to be released. Then, the paper formed on the forming wire 5 moves from above the water suction port 18 to the inside of the upper and lower electromagnetic heating rollers 14. At this time, the vacuum pump 20 is started to pump air into the water suction box 17. The air inside the suction box 17 is drawn out, and the negative pressure inside the suction box 17 causes the suction port 18 to generate suction. The suction of the suction port 18 is used to absorb water from the paper, so that the water is collected in the inner cavity of the suction box 17. Finally, the power supply line 16 is used to power the electromagnetic heating roller 14 to generate heat, and the third reduction motor 15 is started to drive the electromagnetic heating roller 14 located below to rotate clockwise. The electromagnetic heating roller 14 is used to move the paper and use the heat on the electromagnetic heating roller 14 to heat the paper in order to dehydrate and dry the paper.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A dewatering structure for a wire mesh paper machine, comprising a machine housing (1), characterized in that: Four conveying rollers (4) are rotatably connected to the inner cavity of the housing (1). A forming mesh (5) is sleeved on the outer side of the four conveying rollers (4). A first geared motor (6) is fixedly installed on the outer side of the housing (1). The output shaft of the first geared motor (6) is connected to one end of the shaft of a conveying roller (4) through a coupling. Two support rollers (21) are rotatably connected to the inner cavity of the housing (1). The top surface of the two support rollers (21) is in contact with the inner surface of the forming mesh (5). A water receiving box (8) is fixedly connected to the inner cavity of the housing (1). The end of the housing (1) is provided with A drying mechanism (2) is provided. A squeezing mechanism (3) is provided on the top of the housing (1). A water absorption mechanism (9) is provided in the inner cavity of the housing (1). Multiple rotating rods (10) are rotatably connected to the inner cavity of the housing (1). Multiple push rods (11) are fixedly connected to the sides of the multiple rotating rods (10). Multiple second reduction motors (12) are fixedly installed on the outer side of the housing (1). The output shafts of the multiple second reduction motors (12) are respectively connected to the ends of the multiple rotating rods (10) through couplings. A headbox (7) is provided at one end of the top of the housing (1).

2. The dewatering structure of a wire-type paper machine according to claim 1, characterized in that: The drying mechanism (2) includes two support frames (13) fixedly connected to the end of the housing (1). Multiple electromagnetic heating rollers (14) are rotatably connected to the inner side of the two support frames (13). Multiple third reduction motors (15) are fixedly installed on the outer side of one support frame (13). The output shafts of the multiple third reduction motors (15) are respectively connected to one end of the rotating shaft of the electromagnetic heating roller (14) through a coupling. The other end of the multiple electromagnetic heating rollers (14) is fixedly connected to a power supply line (16) through an electric slip ring.

3. The dewatering structure of a wire-type paper machine according to claim 1, characterized in that: The extrusion mechanism (3) includes an arched frame (22) fixedly connected to the top of the housing (1). An electric telescopic rod (23) is fixedly installed on the top surface of the arched frame (22). A U-shaped frame (24) is fixedly connected to the output end of the electric telescopic rod (23). Two extrusion rollers (25) are rotatably connected to the inner side of the U-shaped frame (24). The two extrusion rollers (25) are located directly above the two support rollers (21).

4. The dewatering structure of a wire-type paper machine according to claim 1, characterized in that: The water suction mechanism (9) includes a water suction box (17) fixedly connected to the inner cavity of the housing (1) and an air pump (20) fixedly installed on the front of the housing (1). The input end of the air pump (20) extends into the inner cavity of the water suction box (17). A water inlet (18) is provided at the top, and a filter membrane (19) is fixedly sleeved inside the water inlet (18).

5. The dewatering structure of a wire-type paper machine according to claim 4, characterized in that: Three drain valves (26) are fixedly installed on the back of the housing (1), and the ends of the three drain valves (26) extend into the inner cavity of the housing (1), the water suction box (17) and the water receiving box (8), respectively.

6. The dewatering structure of a wire-type paper machine according to claim 1, characterized in that: The side of the formed mesh (5) is attached to the inner wall of the housing (1).

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