CN213147159U

CN213147159U - Paperboard drying device

Info

Publication number: CN213147159U
Application number: CN202021485552.3U
Authority: CN
Inventors: 何玮
Original assignee: Putian Zhaowei Environmental Protection Paper Products Co ltd
Current assignee: Putian Zhaowei Environmental Protection Paper Products Co ltd
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2021-05-07
Anticipated expiration: 2030-07-24

Abstract

The utility model discloses a paperboard drying device, which comprises a drying bin, wherein a paperboard placing rack is arranged in the drying bin, and drying pipes are arranged on the left side and above the paperboard placing rack; the drying air bin is arranged on the left side of the drying bin, and a drying air main pipe is arranged above the left side of the drying air bin; the fan is arranged on the right side of the drying bin, a fan inlet pipe and a fan outlet pipe are arranged on the fan, and a water-gas separator is arranged on the fan outlet pipe; the secondary air bin, the secondary air bin sets up in the fan right side, the secondary air bin top is equipped with the secondary tuber pipe, be equipped with the check valve on the secondary tuber pipe, the end of secondary tuber pipe passes through screwed connection with the top in dry air bin. The problem that exists among the solution prior art that this device can be better satisfies the needs that the cardboard was dried, creates better economic benefits.

Description

Paperboard drying device

Technical Field

The utility model belongs to cardboard processing field especially relates to a cardboard drying device.

Background

The paperboard is the most used raw material for packaging cartons at present, has good shock resistance, is printable, has light weight, can be recycled, and is widely applied to the fields of product packaging and the like. And after the semi-finished product is manufactured, certain moisture is often contained, so that the compressive strength of the semi-finished product is reduced. Therefore, drying is needed in the production process, so that the quality of the paperboard is ensured. The prior paperboard drying method generally adopts a natural drying machine and a tunnel type drying machine, but the two drying machines have unsatisfactory effect and poor drying effect in actual application. In addition, the drying equipment in the prior art directly discharges the hot air to the atmosphere, which also causes waste of heat source.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects in the prior art, the inventor develops a paperboard drying device by combining the production technical experience of the inventor in the paperboard processing field for many years so as to solve the problems in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a paperboard drying device comprises a drying bin, wherein a paperboard placing rack is arranged in the drying bin, and drying pipes are arranged on the left side and the upper side of the paperboard placing rack; the drying air bin is arranged on the left side of the drying bin, and a drying air main pipe is arranged above the left side of the drying air bin; the fan is arranged on the right side of the drying bin, a fan inlet pipe and a fan outlet pipe are arranged on the fan, and a water-gas separator is arranged on the fan outlet pipe; the secondary air bin, the secondary air bin sets up in the fan right side, the secondary air bin top is equipped with the secondary tuber pipe, be equipped with the check valve on the secondary tuber pipe, the end of secondary tuber pipe passes through screwed connection with the top in dry air bin.

Furthermore, the medium temperature range of the drying air main pipe is 50-55 ℃, the medium in the drying air main pipe is compressed air, a drying air main valve is arranged on the drying air main pipe, a first pressure gauge is arranged on the upper left side of the drying air bin, and the working pressure of the drying air bin is 0.2-0.3 Mpa.

Further, the drying pipe comprises a first bending part, a second bending part and a third bending part, the first bending part extends from the lower part of the left side of the drying bin to the lower part of the right side of the drying bin and is connected with the lower part of the right side of the drying bin, a first automatic control valve is installed on the first bending part, the second bending part is arranged longitudinally, the third bending part is arranged transversely, drying holes are formed in the second bending part and the third bending part, and the drying holes in the second bending part and the paperboard placing rack are located on the same horizontal plane.

Furthermore, the fan inlet pipe is connected with the middle of the drying bin through screws, a fan hand valve is arranged on the fan outlet pipe, and the tail end of the fan outlet pipe is connected with the upper left side of the secondary air bin.

Furthermore, a second automatic control valve is arranged on the secondary air pipe.

Further, a second pressure gauge is installed above the right side of the secondary air bin, an emptying pipe is arranged at the top of the right side of the secondary air bin, and an emptying valve is arranged on the emptying pipe.

Compared with the prior art, the utility model has the advantages of it is following:

1. this device can guarantee that dry wind carries out the drying and blows hot to the cardboard in vertical and horizontal two dimensions through equipment such as stoving storehouse, drying tube, dry wind storehouse and secondary wind storehouse, guarantees the final stoving effect of cardboard.

2. The device is also provided with a water-gas separator, so that gas and liquid of the dried gas can be separated and then flow back to the drying bin through the secondary air pipe, the full utilization of a heat source is realized, and heat source resources are saved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of a drying duct.

Reference numerals: 1. drying bin, 2, drying pipe, 3, first automatic control valve, 4, drying air bin, 5, drying air main pipe, 6, drying air main valve, 7, first pressure gauge, 8, fan inlet pipe, 9, fan, 10, fan outlet pipe, 11, fan hand valve, 12, moisture separator, 13, secondary air pipe, 14, second automatic control valve, 15, check valve, 16, secondary air bin, 17, second pressure gauge, 18, emptying pipe, 19, emptying valve, 20, cardboard rack, 201, first kink, 202, second kink, 203, third kink, 204, drying hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

As shown in fig. 1 and 2, a paperboard drying device comprises a drying bin 1, a paperboard placing rack 20 is arranged in the drying bin 1, and drying pipes 2 are arranged on the left side and the upper side of the paperboard placing rack 20; the drying air bin 4 is arranged on the left side of the drying bin 1, and a drying air main pipe 5 is arranged above the left side of the drying air bin 4; the fan 9 is arranged on the right side of the drying bin 1, a fan inlet pipe 8 and a fan outlet pipe 10 are arranged on the fan 9, and a water-gas separator 12 is arranged on the fan outlet pipe 10; the secondary air bin 16, the secondary air bin 13 sets up in fan 9 right side, the 16 tops in secondary air bin are equipped with secondary air pipe 13, be equipped with check valve 15 on the secondary air pipe 13, the end of secondary air pipe 13 passes through screwed connection with the top in dry air bin 4.

In this embodiment, the check valve is provided to prevent the hot air in the drying air box 4 and the secondary air duct 13 from flowing backwards.

In this embodiment, the medium temperature range of the drying air main pipe 5 is 50 ℃ to 55 ℃, the medium in the drying air main pipe 5 is compressed air, the drying air main pipe 5 is provided with a drying air main valve 6, the upper left side of the drying air bin 4 is provided with a first pressure gauge 7, and the working pressure of the drying air bin 4 is 0.2Mpa to 0.3 Mpa.

As shown in fig. 1 and 2, in order to obtain a better drying effect for the paperboard, the inventor sets the drying pipe 2 into three bending portions, which include a first bending portion 201, a second bending portion 202 and a third bending portion 203, the first bending portion 201 extends from the lower portion of the left side of the drying bin 1 to the lower portion of the right side of the drying bin 4 and is connected therewith, the first bending portion 201 is provided with a first automatic control valve 3, the second bending portion 202 is vertically arranged, the third bending portion 203 is horizontally arranged, the second bending portion 202 and the third bending portion 203 are provided with drying holes 204, and the drying holes on the second bending portion 202 and the paperboard placing rack 20 are located on the same horizontal plane.

In this embodiment, the fan inlet pipe 8 is connected with the middle of the drying bin 1 through a screw, the fan outlet pipe 10 is provided with a fan hand valve 11, and the tail end of the fan outlet pipe 10 is connected with the upper left side of the secondary air bin 16. The inlet pipe 8 of the fan is connected with the middle part of the drying bin 1, so that hot air at the top and the bottom of the drying bin 1 can penetrate through the paper board, and the paper board can obtain better drying performance.

In this embodiment, a second automatic control valve 14 is disposed on the secondary air duct 13. The arrangement of the first and second

automatic control valves

3, 14 allows a high degree of automation of the device.

In this embodiment, a second pressure gauge 17 is installed above the right side of the secondary air bin 16, an emptying pipe 18 is arranged at the top of the right side of the secondary air bin 16, and an emptying valve 19 is arranged on the emptying pipe 18.

When the device is used specifically, firstly, the drying air main valve 6 is opened, hot air reaches the drying air bin 4 through the drying air main pipe 5, then the first automatic control valve 3 is opened, the hot air passes through the drying holes 204 on the drying pipe 2 to dry the paper board, meanwhile, the fan 9 is started, under the action of the fan 9, the dried hot air enters the water-gas separator 12 on the fan outlet pipe 10 through the fan inlet pipe 8, the hot air is separated from water-gas in the fan outlet pipe 10 by the water-gas separator 12 and then reaches the secondary air bin 16, because the fan 9 is always in a working state, the pressure of the secondary air bin 16 can be gradually increased, when the pressure of the secondary air bin 16 is higher than 0.3Mpa, the second automatic control valve 14 is opened, so that the dried secondary air flows back to the drying air bin through the secondary air pipe 13, because the check valve 15 is arranged on the secondary air pipe 13, there is no fear of the blowback of hot air. Thus, the heat source is saved on the premise of ensuring the drying effect.

Through multiple times of measurement and calculation by the inventor, the temperature of the hot air in the secondary air pipe 13 is about 5 ℃ lower than that of the drying air main pipe 5, and after the secondary air in the secondary air pipe 13 is mixed with the hot air in the drying air main pipe 5, the temperature of the hot air in the drying air bin 4 is between 50 ℃ and 52 ℃, so that the process indexes are met. And after the drying operation is finished, opening an exhaust valve 19 on an exhaust pipe 18, and completely discharging residual pressure in the equipment.

In this document, references to left, right, middle, bottom, etc. directional terms are defined as those terms refer to the structures in the drawings as well as the positions of the structures relative to each other, merely for clarity and convenience of the description. It is to be understood that the use of the directional terms should not be taken to limit the scope of the present invention.

It should be noted that the above-mentioned embodiments are illustrative and not restrictive of the technical solutions of the present invention, and equivalents of those skilled in the art or other modifications made in the prior art are intended to be included within the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a cardboard drying device which characterized in that:

the paper board drying device comprises a drying bin, wherein a paper board placing rack is arranged in the drying bin, and drying pipes are arranged on the left side and the upper side of the paper board placing rack;

the drying air bin is arranged on the left side of the drying bin, and a drying air main pipe is arranged above the left side of the drying air bin;

the fan is arranged on the right side of the drying bin, a fan inlet pipe and a fan outlet pipe are arranged on the fan, and a water-gas separator is arranged on the fan outlet pipe;

the secondary air bin, the secondary air bin sets up in the fan right side, the secondary air bin top is equipped with the secondary tuber pipe, be equipped with the check valve on the secondary tuber pipe, the end of secondary tuber pipe passes through screwed connection with the top in dry air bin.

2. A board drying apparatus according to claim 1, wherein: the medium temperature range of the drying air main pipe is 50-55 ℃, the medium in the drying air main pipe is compressed air, a drying air main valve is arranged on the drying air main pipe, a first pressure gauge is arranged on the upper left side of the drying air bin, and the working pressure of the drying air bin is 0.2-0.3 Mpa.

3. A board drying apparatus according to claim 1, wherein: the drying pipe comprises a first bending part, a second bending part and a third bending part, the first bending part extends from the lower part of the left side of the drying bin to the lower part of the right side of the drying bin and is connected with the lower part of the right side of the drying bin, a first automatic control valve is installed on the first bending part, the second bending part is arranged longitudinally, the third bending part is arranged transversely, drying holes are formed in the second bending part and the third bending part, and the drying holes in the second bending part and the paperboard placing rack are located on the same horizontal plane.

4. A board drying apparatus according to claim 1, wherein: the fan inlet pipe is connected with the middle of the drying bin through screws, a fan hand valve is arranged on the fan outlet pipe, and the tail end of the fan outlet pipe is connected with the upper left side of the secondary air bin.

5. A board drying apparatus according to claim 1, wherein: and a second automatic control valve is arranged on the secondary air pipe.

6. A board drying apparatus according to claim 1, wherein: the secondary air bin is characterized in that a second pressure gauge is installed above the right side of the secondary air bin, an emptying pipe is arranged at the top of the right side of the secondary air bin, and an emptying valve is arranged on the emptying pipe.