CN210733576U

CN210733576U - Waste gas heat recovery device

Info

Publication number: CN210733576U
Application number: CN201921211152.0U
Authority: CN
Inventors: 张建通; 牛卫国; 刘耀峰; 鲍鹏; 宁琛
Original assignee: Luoyang Tobacco Service Centre
Current assignee: Luoyang Tobacco Service Centre
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2020-06-12
Anticipated expiration: 2029-07-30

Abstract

The utility model provides a waste gas heat recovery device, which comprises an oven and a plurality of groups of printing machines, and also comprises a waste gas pipe, an air supply pipe and a return air pipe which are connected with the oven; the air supply pipe comprises an inner pipe at the inner side and an outer pipe sleeved outside the inner pipe, the inner pipe is communicated with the upper end of the printer through an air inlet pipe penetrating through the outer pipe, the lower end of the printer is communicated with the waste gas pipe through an air outlet pipe, and the waste gas pipe is provided with a waste gas port leading to the outside; a return air proportional pipe leading to the return air pipe is arranged at the side part of the air outlet pipe, and an outer pipe proportional pipe leading to the outer pipe is arranged at the side part of the air outlet pipe; the utility model discloses a reduce the heat loss of high temperature steam, retrieve waste heat and gas, cyclic utilization, reduction in production cost.

Description

Waste gas heat recovery device

Technical Field

The utility model relates to a printing technology field particularly, relates to an exhaust gas heat recovery device.

Background

The printing is a technology of transferring printing ink to the surfaces of paper, fabrics, plastic products, leather and other materials through processes of plate making, ink application, pressurization and the like, and copying the contents of the original documents in batches.

SUMMERY OF THE UTILITY MODEL

The utility model discloses just based on at least one of above-mentioned technical problem, provided a new waste gas heat recovery unit, retrieve waste heat waste gas, cyclic utilization.

In view of this, the utility model provides an exhaust gas heat recovery device, which comprises an oven, a plurality of printing machines, an exhaust gas pipe, and an air supply pipe and an air return pipe which are connected with the oven; the air supply pipe comprises an inner pipe at the inner side and an outer pipe sleeved outside the inner pipe, the inner pipe is communicated with the upper end of the printer through an air inlet pipe penetrating through the outer pipe, the lower end of the printer is communicated with the waste gas pipe through an air outlet pipe, and the waste gas pipe is provided with a waste gas port leading to the outside; and the side part of the air outlet pipe is provided with an air return proportion pipe leading to the air return pipe, and the side part of the air outlet pipe is provided with an outer pipe proportion pipe leading to the outer pipe.

Preferably, the outer sides of the air supply pipe and the air return pipe are provided with heat insulation cotton.

Preferably, the outer pipe is provided with a connecting pipe leading to the return air pipe at one side of the oven.

Preferably, the pipeline openings of the return air proportional pipe and the outer pipe proportional pipe are smaller than the pipeline opening of the air outlet pipe.

The utility model has the advantages that: through above technical scheme, reduce the heat loss of high temperature steam, retrieve waste heat and gas, cyclic utilization, reduction in production cost.

Drawings

Fig. 1 shows a schematic structural view of an exhaust gas heat recovery device according to an embodiment of the present invention;

fig. 2 shows a schematic structural view of an air supply pipe and an air return pipe according to an embodiment of the present invention;

in the figure: the device comprises a drying oven 1, a printing machine 2, a waste gas pipe 3, an air supply pipe 4, a return air pipe 5, an inner pipe 6, an outer pipe 7, an air inlet pipe 8, an air outlet pipe 9, a waste gas port 10, an air return proportional pipe 11, an outer pipe proportional pipe 12, heat-preservation cotton 13 and a connecting pipe 14.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

The technical solution of the present invention is further explained with reference to fig. 1 and fig. 2.

As shown in the figure, the utility model provides a waste gas heat recovery device, which comprises an oven 1 and a plurality of groups of printing machines 2, and also comprises a waste gas pipe 3, an air supply pipe 4 and an air return pipe 5 which are connected with the oven 1, wherein the air inlet position of the oven 1 is connected with the air return pipe 5, and the air outlet position of the oven 1 is connected with the air supply pipe 4; the blast pipe 4 comprises an inner pipe 6 at the inner side and an outer pipe 7 sleeved outside the inner pipe 6, the inner pipe 6 is communicated with the upper end of the printer 2 through an air inlet pipe 8 penetrating through the outer pipe 7, the lower end of the printer 2 is communicated with the waste gas pipe 3 through an air outlet pipe 9, and the waste gas pipe 3 is provided with a waste gas port 10 leading to the outside; the side of the air outlet pipe 9 is provided with a return air proportional pipe 11 leading to the return air pipe 5, and the side of the air outlet pipe 9 is provided with an outer pipe proportional pipe 12 leading to the outer pipe 7.

The outer sides of the blast pipe 4 and the return air pipe 5 are provided with heat insulation cotton 13 to reduce heat loss.

The outer tube 7 is provided with a connecting tube 14 to the return air duct 5 at the side of the oven 1.

The pipeline openings of the return air proportional pipe 11 and the outer pipe proportional pipe 12 are smaller than the pipeline opening of the air outlet pipe 9, the pipeline openings of the return air proportional pipe 11 and the outer pipe proportional pipe 12 are proportional to the pipeline opening of the air outlet pipe 9, the flow in the proportional pipeline is adjusted according to the production exhaust flow, the gas flow proportional control can be carried out by carrying out manual valve adjustment, low-temperature waste gas is shunted in a proper amount, and the heat loss is reduced.

During operation, the high temperature steam in the inner tube 6 gets into 2 stoving of printing machines (the drying rate of different printing colour groups is different, required hot gas flow is different, through valve control high temperature steam), some low temperature waste gas passes through exhaust pipe 3 and discharges, some low temperature waste gas passes through outer tube proportion pipe 12 and gets into outer tube 7, outer tube 7 is wrapping up inner tube 6, the low temperature waste gas in the outer tube 7 forms a heat preservation to inner tube 6, reduce the heat loss of high temperature steam in the inner tube 6, some low temperature waste gas passes through return air proportion pipe 11 and gets into return air pipe 5, it is the oven air inlet position department to get into 1 at last, the reheating reduces the energy loss.

Above combine the figure to describe in detail the utility model discloses a technical scheme, the utility model discloses a technical scheme provides a new waste gas heat recovery unit, reduces the heat loss of high temperature steam, retrieves waste heat waste gas, cyclic utilization, reduction in production cost.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an exhaust gas heat recovery unit, includes oven, multiunit printing machine, its characterized in that: the drying oven also comprises an exhaust gas pipe, an air supply pipe and an air return pipe which are connected with the drying oven; the air supply pipe comprises an inner pipe at the inner side and an outer pipe sleeved outside the inner pipe, the inner pipe is communicated with the upper end of the printer through an air inlet pipe penetrating through the outer pipe, the lower end of the printer is communicated with the waste gas pipe through an air outlet pipe, and the waste gas pipe is provided with a waste gas port leading to the outside; and the side part of the air outlet pipe is provided with an air return proportion pipe leading to the air return pipe, and the side part of the air outlet pipe is provided with an outer pipe proportion pipe leading to the outer pipe.

2. The exhaust gas heat recovery device according to claim 1, characterized in that: and heat insulation cotton is arranged on the outer sides of the air supply pipe and the air return pipe.

3. The exhaust gas heat recovery device according to claim 1, characterized in that: and a connecting pipe leading to the air return pipe is arranged on one side of the outer pipe in the oven.

4. The exhaust gas heat recovery device according to claim 1, characterized in that: the pipeline openings of the return air proportional pipe and the outer pipe proportional pipe are smaller than the pipeline opening of the air outlet pipe.