CN111851113B

CN111851113B - Energy-saving papermaking dehydration drying device

Info

Publication number: CN111851113B
Application number: CN202010831179.0A
Authority: CN
Inventors: 李康康; 李振祥; 任家国; 辛海涛; 史文明
Original assignee: Qinyang Xinghua Papermaking Equipment Co ltd
Current assignee: Qinyang Xinghua Papermaking Equipment Co ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2022-10-21
Anticipated expiration: 2040-08-18
Also published as: CN111851113A

Abstract

The invention provides an energy-saving dehydration drying device for papermaking, which comprises a box body, wherein a feed inlet and a discharge outlet are arranged on the box body, guide rollers are arranged at the feed inlet and the discharge outlet, a pair of squeeze rollers and a plurality of material pressing rollers which are arranged up and down are sequentially arranged in the box body according to the movement direction of paper, and the squeeze rollers positioned at the upper part are fixedly arranged at the telescopic end of an electro-hydraulic push rod through a mounting frame; the extrusion roller comprises a roller body provided with a cavity, micropores are uniformly distributed on the side surface of the roller body, and a rotating shaft and a rotating pipe are respectively arranged at two ends of the roller body; a pair of blowing heads for blowing the extrusion water are arranged in the box body corresponding to the front of the pair of extrusion rollers; the outside of box is equipped with the air heater, and the air heater is equipped with the air supply pipe to the inside extension of box, is equipped with many fumaroles on the air supply pipe, is equipped with a plurality of jet heads on the fumarole. The invention can continuously and efficiently carry out drainage and drying treatment on paper on the premise of energy saving, and can ensure the processing quality of the paper.

Description

Energy-saving papermaking dehydration drying device

Technical Field

The invention relates to the technical field of papermaking mechanical equipment, in particular to an energy-saving papermaking dewatering and drying device.

Background

The paper making machine is a complete set of equipment which can make paper pulp form paper web and is linked in different parts, and comprises a main machine of a head box, a net part, a pressing part, a drying part, a calender, a paper winder, a transmission part and the like, and an auxiliary system of steam, water, vacuum, lubricating heat recovery and the like. The wire part forming the wet paper web is the core of the paper machine, so the paper machine can be further classified into a fourdrinier paper machine, a gap wire paper machine and a cylinder paper machine according to the structure of the wire part.

Forming a wet paper sheet on the wire part by the slurry and dewatering; then pressing, i.e. mechanically extruding the water from the wet paper sheet from the wire part to raise dryness of paper industry, improve surface property of paper industry and raise smoothness and strength of paper, then feeding the paper into drying part to further dewater the pressed wet paper sheet to make paper industry shrink, fibre combination tight and strength increase.

Traditional squeezing and drying parts are arranged, when squeezing and dewatering are carried out, paper is easy to bond with a squeeze roll, so that the paper is damaged, in addition, a large amount of high-temperature and moist steam is generated when the paper is dried, and the waste of energy is caused by direct discharge.

Disclosure of Invention

The invention aims to provide an energy-saving papermaking dewatering and drying device aiming at the defects of the prior art, and the specific scheme is as follows:

an energy-saving dehydration drying device for papermaking comprises a box body, wherein a feed inlet and a discharge outlet are formed in the box body, guide rollers are arranged at the feed inlet and the discharge outlet, a pair of squeeze rollers and a plurality of pressure rollers which are arranged up and down are sequentially arranged in the box body according to the motion direction of paper, and the squeeze rollers positioned at the upper part are fixedly arranged at the telescopic ends of electric-hydraulic push rods through mounting racks; the extrusion roller comprises a roller body provided with a cavity, micropores are uniformly distributed on the side surface of the roller body, and a rotating shaft and a rotating pipe are respectively arranged at two ends of the roller body; a pair of blowing heads for blowing extrusion water are arranged in the box body corresponding to the front of the pair of extrusion rollers; the air heater is arranged outside the box body and provided with an air supply pipe extending towards the interior of the box body, a plurality of air injection pipes are arranged on the air supply pipe, and a plurality of air injection heads are arranged on the air injection pipes; the top of the box body is provided with a plurality of induced hoods, the top ends of the induced hoods are connected to a shell side inlet of the tubular heat exchanger through a pipeline, an induced draft fan is arranged on the pipeline between the induced hoods and the shell side inlet, and a water collecting tank is arranged below a shell side outlet of the tubular heat exchanger; the tube side inlet of the tube side heat exchanger is used for introducing air, the tube side outlet of the tube side heat exchanger is connected to the air inlet of an exhaust fan through a pipeline, the air outlet pipeline of the exhaust fan is connected to an air distribution pipe, a plurality of branch pipes are arranged on the air distribution pipe, and the branch pipes are respectively connected to the purging pipe and the rotating pipe; the branch pipe is connected with the rotating pipe through a buckle type rotating joint.

Based on the above, a water collecting tank is arranged below the inside of the box body corresponding to the squeezing roller, and the bottom of the water collecting tank slants downwards to a water outlet extending to the outside of the box body.

Based on the above, the surfaces of the extrusion roller and the paper pressing roller are coated with the nano self-cleaning material.

Compared with the prior art, the invention has outstanding substantive characteristics and remarkable progress, and particularly has the following advantages:

1. according to the invention, water vapor in the box body is introduced into the tubular heat exchanger through the induced draft fan, heat in the steam is recovered by using air, and the air after heat exchange enters the box body again through the blowing head and the extrusion roller, so that heat waste is avoided through the structural design.

2. According to the invention, the cavity is arranged in the roller body, the rotating pipe is arranged outside the roller body, the micropores are formed in the side surface of the roller body, and the air after heat exchange is discharged outwards through the micropores.

3. According to the invention, the structural design of the blowing head can quickly discharge the extrusion water, so that the influence of excessive water accumulation on the paper on the subsequent processing quality is prevented.

Drawings

Fig. 1 is a top view of the overall structure of the present invention.

Fig. 2 is a schematic view of the structure of the squeeze roll in the present invention.

FIG. 3 is a top view of the fitting structure of the gas supply pipe and the gas injection pipe in the present invention.

In the figure: 1. a box body; 2. a feed inlet; 3. a discharge port; 4. a squeeze roll; 4-1, a roller body; 4-2. Cavity; 4-3. Micropores; 4-4. A rotating shaft; 4-5, rotating the tube; 5. an electro-hydraulic push rod; 6. a mounting frame; 8. a sweeping head; 9. a water collection tank; 10. a water outlet; 11. a platen roller; 12. a hot air blower; 13. a gas supply pipe; 14. a gas ejector tube; 14-1. A showerhead; 15. an induced draft cover; 16. an induced draft fan; 17. a shell and tube heat exchanger; 18. an exhaust fan; 19. a gas distributing pipe; 20. a branch pipe; 21. paper.

Detailed Description

The technical solution of the present invention is further described in detail by the following embodiments.

Examples

As shown in fig. 1-3, the invention provides an energy-saving dewatering and drying device for papermaking, which comprises a box body 1, wherein a feed inlet 2 and a discharge outlet 3 are arranged on the box body 1, and guide rollers are arranged at the feed inlet 2 and the discharge outlet 3.

A pair of squeeze rollers 4 and a plurality of nip rolls which are arranged up and down are sequentially arranged in the box body 1 according to the moving direction of the paper 21, and the squeeze rollers 4 positioned at the upper part are fixedly arranged at the telescopic end of the electro-hydraulic push rod 5 through a mounting frame 6; the extrusion roller 4 comprises a roller body 4-1 provided with a cavity 4-2, micropores 4-3 are uniformly distributed on the side surface of the roller body 4-1, and a rotating shaft 4-4 and a rotating pipe 4-5 are respectively arranged at two ends of the roller body 4-1; a pair of blowing heads 8 for blowing the extrusion water are arranged in the box body 1 corresponding to the front of the pair of extrusion rollers 4; an air heater 12 is arranged outside the box body 1, the air heater 12 is provided with an air supply pipe 13 extending towards the interior of the box body 1, the air supply pipe 13 is provided with a plurality of air nozzles 14, and the air nozzles 14 are provided with a plurality of air nozzles 14-1.

In order to facilitate the discharge of the water vapor in the box body 1 and simultaneously recover the heat contained in the water vapor, a plurality of induced draft hoods 15 are arranged at the top of the box body 1, the top ends of the induced draft hoods 15 are connected to a shell side inlet of a tubular heat exchanger 17 through a pipeline, an induced draft fan 16 is arranged on the pipeline between the induced draft hoods 15 and the shell side inlet, and a water collecting tank is arranged below a shell side outlet of the tubular heat exchanger 17; the tube side inlet of the tube side heat exchanger 17 is used for introducing air, the tube side outlet of the tube side heat exchanger 17 is connected to the air inlet of the exhaust fan 18 through a pipeline, the air outlet pipeline of the exhaust fan 18 is connected to the air distribution pipe 19, the air distribution pipe 19 is provided with a plurality of branch pipes 20, and the branch pipes 20 are respectively connected to the purging pipe and the rotating pipes 4-5.

In order to ensure the tightness of the connection between the snap-in swivel and the swivel 4-5, the branch pipe 20 is connected to the swivel 4-5 by means of a snap-in swivel.

In order to collect water extruded by the extrusion rollers 4 conveniently, a water collecting tank 9 is arranged below the box body 1 corresponding to the extrusion rollers 4, and the bottom of the water collecting tank 9 slants downwards in an inclined mode to a water outlet 10 extending to the outside of the box body 1.

In order to prevent the squeezing roller 4 and the paper pressing roller 11 from adhering to the paper 21, the surfaces of the squeezing roller 4 and the paper pressing roller 11 are coated with nano self-cleaning materials.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.

Claims

1. The utility model provides an energy-saving papermaking uses dehydration drying device which characterized in that: the paper feeding device comprises a box body (1), wherein a feeding hole (2) and a discharging hole (3) are formed in the box body (1), guide rollers are arranged at the feeding hole (2) and the discharging hole (3), a pair of vertically arranged squeeze rollers (4) and a plurality of pressure rollers are sequentially arranged in the box body (1) according to the movement direction of paper (21), and the squeeze rollers (4) positioned at the upper part are fixedly arranged at the telescopic end of an electro-hydraulic push rod (5) through a mounting frame (6); the extrusion roller (4) comprises a roller body (4-1) provided with a cavity (4-2), micropores (4-3) are uniformly distributed on the side surface of the roller body (4-1), and a rotating shaft (4-4) and a rotating pipe (4-5) are respectively arranged at two ends of the roller body (4-1); a pair of blowing heads (8) for blowing the extrusion water are arranged in the box body (1) corresponding to the front of the pair of extrusion rollers (4); an air heater (12) is arranged outside the box body (1), the air heater (12) is provided with an air supply pipe (13) extending towards the interior of the box body (1), the air supply pipe (13) is provided with a plurality of air injection pipes (14), and the air injection pipes (14) are provided with a plurality of air injection heads (14-1); the top of the box body (1) is provided with a plurality of air hoods (15), the top ends of the air hoods (15) are connected to a shell pass inlet of the tube heat exchanger (17) through a pipeline, an induced draft fan (16) is arranged on the pipeline between the air hoods (15) and the shell pass inlet, and a water collecting tank is arranged below a shell pass outlet of the tube heat exchanger (17); a tube pass inlet of the tube pass heat exchanger (17) is used for introducing air, a tube pass outlet of the tube pass heat exchanger (17) is connected to an air inlet of an exhaust fan (18) through a pipeline, an air outlet pipeline of the exhaust fan (18) is connected to an air distribution pipe (19), a plurality of branch pipes (20) are arranged on the air distribution pipe (19), and the branch pipes (20) are respectively connected to the purging pipe and the rotating pipes (4-5); the branch pipe (20) is connected with the rotating pipe (4-5) through a buckle type rotating joint.

2. The energy-saving dewatering and drying device for papermaking according to claim 1, wherein: a water collecting tank (9) is arranged below the box body (1) corresponding to the squeezing rollers (4), and the bottom of the water collecting tank (9) slants obliquely downwards to extend to a water outlet (10) outside the box body (1).

3. The energy-saving dewatering and drying device for papermaking according to claim 1, characterized in that: the surfaces of the extrusion roller (4) and the paper pressing roller (11) are coated with nano self-cleaning materials.