Squeezing and drying device of paper machine

Abstract

The utility model discloses a squeezing and drying device of a paper machine, which comprises a squeezing box, two ends of the squeezing box are respectively provided with a notch for paper to pass through, one side of the squeezing box, which is provided with two groups of notches, is respectively provided with a conveying roller in a rotating way, and two groups of squeezing mechanisms are matched with each other to drive the paper to pass through. A squeezing motor in the squeezing mechanism can drive squeezing rollers on the outer walls of two rotating rods to be matched, paper is squeezed to extrude out water in the paper, a heating pipe is matched with a ventilation mechanism, and the interior of the squeezing box is heated through the heating pipe; two sets of ventilation fans in the ventilation mechanism are started to extract hot air in the squeezing box and convey the hot air into a fan cover communicated with the ventilation fans, the hot air extracted by the ventilation fans is conveyed back into the squeezing box from the other set of fan cover through an air pipe, the hot air circularly flows in the squeezing box, squeezed paper is dewatered, and residual water in the paper is evaporated. And the paper can reach the required drying degree, so that the paper can be uniformly and quickly dried.

Description

Technical Field

[0001] The utility model relates to the technical field of paper machines, in particular to a pressing and drying device for a paper machine. Background Technique

[0002] Papermaking is an important invention of the ancient Chinese working people. Along with the development of society and the progress of modern mechanical equipment, people use modern paper machines to replace traditional manual papermaking. The pulp suitable for making paper is diluted with water to a suitable concentration, and is initially dewatered in the wire section of the paper machine to form wet paper towels. Then the wet paper towels are pressed and dewatered by a pressing device, and finally dried into paper. The pressing device is an essential part of the paper machine. At present, the pressing device of the paper machine has a complex structure and inconvenient paper feeding.

[0003] For example, a pressing device of a paper machine (publication number: CN215164150U) includes an upper pressing roller and a lower pressing roller. There is a gap for the paper to pass between the upper pressing roller and the lower pressing roller. A water-absorbing felt is arranged between the paper and the lower pressing roller. A first roller group, a second roller group and a third roller group are arranged below the lower pressing roller. The water-absorbing felt is arranged in a ring shape on the first roller group, the second roller group and the third roller group. The beneficial effects of the utility model are as follows: The utility model presses the water in the paper by the simultaneous rotation of the upper pressing roller and the lower pressing roller, and absorbs the water squeezed out of the paper by the water-absorbing felt. A heating device is arranged inside the upper pressing roller and / or the lower pressing roller, which can not only accelerate the movement speed of water molecules on the paper, improve the pressing speed and efficiency of the paper, but also ensure the smoothness of the paper. In addition, the water-absorbing felt is squeezed and heated and dried by the cooperation of the first roller group, the second roller group and the third roller group to ensure the dryness of the water-absorbing felt and improve the pressing speed and efficiency of the paper.

[0004] Based on the retrieval of the above patent and the discovery of the equipment in the existing technology, it is found that when the above equipment is applied, the heating device is installed inside the pressing roller. Especially in a production environment with high intensity and continuous operation, the wear and aging speed of these components may be accelerated, and the regular maintenance and replacement of the heating device are inconvenient. Moreover, the water-absorbing felt is prone to shedding hair and adhering to the paper during long-term use. Therefore, we need to propose a pressing and drying device for a paper machine. Content of the Utility Model

[0005] The purpose of the utility model is to provide a pressing and drying device for a paper machine. Through the cooperation of two pressing mechanisms, the water inside the paper can be squeezed out. Then, through the cooperation of the heating pipe and the ventilation mechanism, the water in the pressed paper is removed, and the residual water in the paper is evaporated, so that the paper reaches the required dryness degree, so as to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A pressing and drying device for a paper machine, comprising a pressing box. Both ends of the pressing box are provided with notches for the paper to pass through. A conveying roller is rotatably installed on one side of the pressing box at both notches. One side of one of the conveying rollers is provided with two pressing mechanisms for pressing the paper.

[0008] The pressing mechanism includes two rotating rods. The two rotating rods are rotatably installed symmetrically up and down inside the pressing box. One end of the two rotating rods penetrates the pressing box and is fixedly sleeved with a gear. The two gears are meshed. The other end of one of the rotating rods penetrates the pressing box and is fixedly connected with a pressing motor. The outer walls of the two rotating rods are fixedly sleeved with pressing rollers.

[0009] An installation shell is installed at the inner bottom of the pressing box. A heating pipe is installed inside the installation shell. A ventilation mechanism is installed at the top of the pressing box.

[0010] Preferably, the ventilation mechanism includes two ventilation openings opened at the top of the pressing box. Wind covers are fixedly installed at the tops of the two ventilation openings. An air duct is fixedly communicated with the tops of the two wind covers.

[0011] Preferably, two ventilation fans are installed inside one of the ventilation openings. The two ventilation fans are symmetrically fixedly installed inside the ventilation opening through brackets.

[0012] Preferably, two guiding rollers for guiding the paper are installed above the heating pipe in the pressing box. The two guiding rollers are arranged corresponding to each other up and down.

[0013] Preferably, two air inlets are symmetrically opened below the heating pipe in the pressing box. Dust-proof nets are fixedly installed inside the two air inlets.

[0014] Preferably, a temperature sensor is fixedly installed at the inner top of the pressing box. A control panel is fixedly installed on one outer wall of the pressing box. The control panel is electrically connected to the pressing motor, the heating pipe, the ventilation fan and the temperature sensor through wires respectively.

[0015] Preferably, a water receiving box is fixedly installed inside the pressing box. The water receiving box is located below the two pressing mechanisms.

[0016] Preferably, a drain pipe is fixedly communicated with the bottom of the water receiving box. The bottom of the drain pipe penetrates the pressing box and extends to the bottom of the pressing box.

[0017] Compared with the prior art, the beneficial effects of the present utility model are:

[0018] Through the cooperation of two sets of pressing mechanisms, the utility model can drive the pressing rollers on the outer walls of two sets of rotating rods through the pressing motors in the pressing mechanisms to press the paper and squeeze out the moisture inside. Then, through the cooperation of the heating pipes and the ventilation mechanism, the heating pipes heat the inside of the pressing box, and two ventilation fans in the ventilation mechanism are started to extract the hot air inside the pressing box and transport it into the connected air hoods. The hot air extracted by the ventilation fans is transported back into the pressing box through the air ducts, so that the hot air circulates inside the pressing box, removes water from the pressed paper, evaporates the residual moisture in the paper, and makes the paper reach the required drying degree to ensure that the paper can be dried evenly and quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the side view of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the cross-section of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the pressing mechanism of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the pressing box and the ventilation mechanism of the utility model.

[0023] In the figure: 1. Pressing box; 2. Notch; 3. Conveyor roller; 4. Pressing mechanism; 41. Rotating rod; 42. Gear; 43. Pressing motor; 44. Pressing roller; 5. Installation shell; 6. Heating pipe; 7. Ventilation mechanism; 71. Ventilation opening; 72. Ventilation fan; 73. Air hood; 74. Air duct; 8. Guide roller; 9. Water receiving box; 10. Drain pipe; 11. Temperature sensor; 12. Control panel; 13. Air inlet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figures 1-4 , the present utility model provides a technical solution:

[0026] A pressing and drying device for a paper machine, including a pressing box 1. Notches 2 for the paper to pass through are provided at both ends of the pressing box 1. Conveyor rollers 3 are rotatably installed on one side of the pressing box 1 at both notches 2. Two pressing mechanisms 4 for pressing the paper are installed on one side of one of the conveyor rollers 3;

[0027] The pressing mechanism 4 includes two groups of rotating rods 41, and the two groups of rotating rods 41 are rotatably installed symmetrically up and down inside the pressing box 1. One end of each of the two groups of rotating rods 41 penetrates through the pressing box 1 and is fixedly sleeved with a gear 42. The two groups of gears 42 are meshed. The other end of one of the rotating rods 41 penetrates through the pressing box 1 and is fixedly connected to a pressing motor 43. The outer walls of the two groups of rotating rods 41 are fixedly sleeved with pressing rollers 44, which is convenient for driving the rotating rod 41 connected thereto to rotate through the pressing motor 43, making the gear 42 at the end of the rotating rod 41 mesh with the other group of gears 42, and then driving the two groups of rotating rods 41 to rotate synchronously. Through the cooperation of the two groups of pressing rollers 44, the moisture inside the paper is squeezed out;

[0028] An installation shell 5 is installed at the inner bottom of the pressing box 1. A heating pipe 6 is installed inside the installation shell 5. The installation shell 5 is provided with upper and lower openings, and there are no less than three groups of heating pipes 6. A ventilation mechanism 7 is installed at the top of the pressing box 1.

[0029] The ventilation mechanism 7 includes two ventilation openings 71 opened at the top of the pressing box 1. Wind hoods 73 are fixedly installed at the tops of the two ventilation openings 71. An air duct 74 is fixedly communicated at the tops of the two wind hoods 73, which is convenient for communicating the two wind hoods 73 through the air duct 74.

[0030] Two ventilation fans 72 are installed inside one of the ventilation openings 71. The two ventilation fans 72 are symmetrically and fixedly installed inside the ventilation opening 71 through brackets, which is convenient for starting the two ventilation fans 72 to extract the hot air inside the pressing box 1 and transport it into the connected wind hood 73. Through the air duct 74, the hot air extracted by the ventilation fans 72 is transported back into the pressing box 1 from the other wind hood 73, so that the hot air circulates inside the pressing box 1 to remove water from the pressed paper.

[0031] Two guiding rollers 8 for guiding the paper are installed above the heating pipe 6 in the pressing box 1. The two guiding rollers 8 are arranged corresponding to each other up and down, which is convenient for guiding the pressed paper through the two guiding rollers 8 and at the same time limiting the paper to prevent the paper from shifting and shaking when the ventilation fans 72 extract the air inside the pressing box 1.

[0032] Two air inlets 13 are symmetrically opened below the heating pipe 6 in the pressing box 1. Dust-proof nets are fixedly installed inside the two air inlets 13, which is convenient for air to enter the pressing box 1 through the air inlets 13.

[0033] A temperature sensor 11 is fixedly installed on the inner top of the pressing box 1. The temperature sensor 11 monitors the temperature inside the pressing box 1. One outer wall of the pressing box 1 is fixedly installed with a control panel 12. The control panel 12 is electrically connected to the pressing motor 43, the heating pipe 6, the ventilation fan 72 and the temperature sensor 11 through wires, facilitating the control of the components electrically connected thereto through the control panel 12.

[0034] A water receiving box 9 is fixedly installed inside the pressing box 1. The water receiving box 9 is located below the two pressing mechanisms 4, facilitating the collection of the water squeezed out when the two pressing mechanisms 4 press the paper.

[0035] The bottom of the water receiving box 9 is fixedly communicated with a drain pipe 10. The bottom of the drain pipe 10 penetrates through the pressing box 1 and extends to the bottom of the pressing box 1, facilitating the discharge of the water collected by the water receiving box 9 through the drain pipe 10.

[0036] Working principle: When the present utility model is in use, through the cooperation of the two pressing mechanisms 4, the pressing motor 43 in the pressing mechanism 4 can drive the pressing rollers 44 on the outer walls of the two rotating rods 41 to cooperate to press the paper and squeeze out the moisture inside it. Then, through the cooperation of the heating pipe 6 and the ventilation mechanism 7, the heating pipe 6 heats the inside of the pressing box 1. The two ventilation fans 72 in the ventilation mechanism 7 start to extract the hot air inside the pressing box 1 and transport it into the hood 73 communicated therewith. Through the air duct 74, the hot air extracted by the ventilation fan 72 is transported back into the pressing box 1 from the other hood 73, enabling the hot air to circulate inside the pressing box 1 to remove the water from the pressed paper and evaporate the residual moisture in the paper, so that the paper reaches the required drying degree to ensure that the paper can be dried evenly and quickly.

[0037] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A press drying device for a paper machine, characterized in that: It includes a pressing box (1), both ends of the pressing box (1) are provided with notches (2) for the paper to pass through, and conveying rollers (3) are rotatably installed on one side of the two notches (2). A pressing mechanism (4) for pressing the paper is installed on one side of one of the conveying rollers (3). The pressing mechanism (4) includes two rotating rods (41). The two rotating rods (41) are rotatably installed inside the pressing box (1) symmetrically up and down. One end of each of the two rotating rods (41) penetrates through the pressing box (1) and is fixedly sleeved with a gear (42). The two gears (42) are meshed. The other end of one of the rotating rods (41) penetrates through the pressing box (1) and is fixedly connected to a pressing motor (43). Pressing rollers (44) are fixedly sleeved on the outer walls of the two rotating rods (41). An installation shell (5) is installed at the inner bottom of the pressing box (1), a heating pipe (6) is installed inside the installation shell (5), and a ventilation mechanism (7) is installed at the top of the pressing box (1).

2. The pressing and drying device of a paper machine according to claim 1, characterized in that: The ventilation mechanism (7) includes two ventilation openings (71) opened at the top of the pressing box (1). Wind hoods (73) are fixedly installed at the tops of the two ventilation openings (71). An air duct (74) is fixedly communicated with the tops of the two wind hoods (73).

3. The pressing and drying device of a paper machine according to claim 2, characterized in that: Two ventilation fans (72) are installed inside one of the ventilation openings (71). The two ventilation fans (72) are symmetrically fixedly installed inside the ventilation opening (71) through brackets.

4. The pressing and drying device of a paper machine according to claim 1, characterized in that: Two guiding rollers (8) for guiding the paper are installed above the heating pipe (6) in the pressing box (1). The two guiding rollers (8) are arranged corresponding to each other up and down.

5. The pressing and drying device of a paper machine according to claim 1, characterized in that: Two air inlets (13) are symmetrically opened below the heating pipe (6) in the pressing box (1). Dust-proof nets are fixedly installed inside the two air inlets (13).

6. The pressing and drying device of a paper machine according to claim 3, characterized in that: A temperature sensor (11) is fixedly installed at the inner top of the pressing box (1), and a control panel (12) is fixedly installed on one outer wall of the pressing box (1). The control panel (12) is electrically connected to the pressing motor (43), the heating pipe (6), the ventilation fan (72), and the temperature sensor (11) through wires respectively.

7. The pressing and drying device of a paper machine according to claim 1, characterized in that: A water receiving box (9) is fixedly installed inside the pressing box (1). The water receiving box (9) is located below the two pressing mechanisms (4).

8. The pressing and drying device of a paper machine according to claim 7, characterized in that: A drain pipe (10) is fixedly communicated with the bottom of the water receiving box (9). The bottom of the drain pipe (10) penetrates through the pressing box (1) and extends to the bottom of the pressing box (1).

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