Printing and dyeing flue gas waste heat conversion device

Abstract

The utility model provides a printing and dyeing flue gas waste heat conversion device, which relates to the technical field of printing and dyeing waste gas waste heat recovery and comprises a casing, a flue gas channel is arranged in the casing along the length direction of the casing, at least three spiral heat exchange tubes are arranged in the flue gas channel along the length direction of the casing, and the heat exchange tubes are arranged in the casing. The multiple heat exchange pipes are crossed at an angle and attached to one another, and a cleaning mechanism used for cleaning the outer walls of the heat exchange pipes is arranged in the flue gas channel. According to the printing and dyeing flue gas waste heat conversion device, when flue gas passes through the flue gas channel, the arc-shaped outer wall of the heat exchange pipe can increase the resistance when the flue gas passes through, the contact area of the flue gas and water is large, meanwhile, when the water passes through the spiral heat exchange pipe, due to the long stroke, the heat exchange time is greatly prolonged, and compared with a traditional straight pipe structure, the heat exchange efficiency is greatly improved. And the heat exchange effect is obviously improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery of printing and dyeing exhaust gas, in particular to a printing and dyeing fume waste heat conversion device. Background Art

[0002] During the weaving, printing and dyeing process, some printing and dyeing equipment will emit printing and dyeing waste gas, which contains not only pollutants such as volatile organic compounds, but also many particulate debris, and the temperature of the printing and dyeing waste gas is also relatively high. The treatment of printing and dyeing waste gas not only includes the purification and filtration of the waste gas, but also requires the recovery of its waste heat.

[0003] The waste heat recovery device in the prior art usually uses the waste gas to heat the clean water. However, since the heat exchange tubes are often straight tubes, the water and flue gas pass through faster and the contact time is shorter, resulting in unsatisfactory heat exchange effect and the exhaust gas temperature is still very high. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a printing and dyeing fume waste heat conversion device, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a printing and dyeing smoke waste heat conversion device, including a casing, a smoke channel is arranged in the casing along its length direction, at least three heat exchange tubes are arranged in the smoke channel along its length direction, the heat exchange tubes are spiral, and several heat exchange tubes are cross-fitted with each other at an angle, and a cleaning mechanism for cleaning the outer wall of the heat exchange tube is arranged in the smoke channel.

[0008] Preferably, the cleaning mechanism includes a spray pipe, a plurality of spray heads and a brushing assembly, wherein the plurality of spray heads are arranged along the length direction of the flue gas channel, the plurality of spray heads are connected to the spray pipe one by one, and the brushing assembly corresponds to the outer wall of the heat exchange tube.

[0009] Preferably, the brushing assembly includes two gear rings, at least three sets of gears, at least one set of rollers and a cleaning brush, the three sets of gears are meshed outside the gear rings in a planetary arrangement, the gears are pivotally connected to the casing, the roller is arranged between the two gear rings, the cleaning brush is arranged on the outer wall of the roller, and the casing is provided with a motor coaxially connected to the gears.

[0010] Preferably, the gears are arranged in four groups, and the four groups of gears are distributed outside the gear ring in a rectangular shape.

[0011] Preferably, each of the rollers is pivotally connected to the gear ring.

[0012] Preferably, a sewage pipe communicating with the smoke channel is provided at the bottom of the casing.

[0013] (III) Beneficial effects

[0014] The utility model provides a printing and dyeing fume waste heat conversion device, which has the following beneficial effects:

[0015] 1. In the printing and dyeing flue gas waste heat conversion device, when the flue gas passes through the flue gas channel, the arc of the outer wall of the heat exchange tube can increase the resistance of the flue gas passing through, and the contact area between the flue gas and water is also larger. At the same time, when the water passes through the spiral heat exchange tube, due to its longer stroke, the heat exchange time will also be greatly increased. Compared with the traditional straight tube structure, the heat exchange effect is significantly improved.

[0016] 2. When thick oil stains accumulate on the outer wall of the heat exchange tube of the printing and dyeing fume waste heat conversion device, the outer wall of the spiral heat exchange tube is regularly cleaned by a cleaning mechanism, thereby effectively avoiding the reduction of heat exchange efficiency due to oil stain coverage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an external axonometric drawing of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the cleaning mechanism of the utility model.

[0019] In the figure: 1 casing, 2 flue gas channel, 3 heat exchange tube, 4 spray pipe, 5 sewage pipe, 6 gear ring, 7 roller, 8 cleaning brush, 9 gear, 10 motor. DETAILED DESCRIPTION

[0020] The utility model provides a printing and dyeing fume waste heat conversion device, such as Figure 1-2 As shown, it includes a casing 1, in which a smoke channel 2 is arranged along its length direction, the inlet of the smoke channel 2 is connected to the smoke exhaust port of the shaping machine, and the outlet of the smoke channel 2 is connected to the electrostatic dust purifier, which is an existing commercially available product and will not be described in detail.

[0021] like Figure 1-2As shown, at least three heat exchange tubes 3 are arranged in the flue gas channel 2 along its length direction. The three heat exchange tubes 3 can be connected to the water inlet pipe and the water outlet pipe end to end, and the three heat exchange tubes 3 can also be connected end to end, so that the water circulates back and forth several times to improve the heat exchange efficiency. The heat exchange tube 3 is spiral, and the three heat exchange tubes 3 are all on the same axis and at different angles. Several heat exchange tubes 3 are cross-fitted with each other at an angle, and the three heat exchange tubes 3 are stuck in their gaps to form a ring structure. At the same time, the arc of the outer wall of the heat exchange tube 3 can increase the resistance of the flue gas when passing through, and the contact area between the flue gas and the water is also large. At the same time, when the water passes through the spiral heat exchange tube 3, due to its long travel, the heat exchange time will also be greatly increased. Compared with the traditional straight tube structure, the heat exchange effect is significantly improved.

[0022] A cleaning mechanism for cleaning the outer wall of the heat exchange tube 3 is arranged in the flue gas channel 2 .

[0023] like Figure 2 As shown, the cleaning mechanism includes a spray pipe 4, a plurality of spray heads and a brushing assembly, the spray head is arranged in the smoke channel 2, the plurality of spray heads are arranged along the length direction of the smoke channel 2, the spray heads correspond to the heat exchange tube 3 up and down, the plurality of spray heads are connected to the spray pipe 4 one by one, and the spray pipe 4 is connected to the water source through a water pump. The brushing assembly corresponds to the outer wall of the heat exchange tube 3.

[0024] The specific brushing assembly includes two gear rings 6, at least three sets of gears 9, at least one set of rollers 7 and a cleaning brush 8. The three sets of gears 9 are meshed outside the gear rings 6 in a planetary arrangement. In this embodiment, four sets of gears 9 are provided, and the four sets of gears 9 are distributed outside the gear rings 6 in a rectangular shape. The gear ring 6 is in the middle of the four sets of gears 9, and the four sets of gears 9 are used to support the gear ring 6. The gear 9 is pivoted on the housing 1, and the housing 1 is provided with a motor 10 coaxially connected with the gear 9. When the motor 10 drives the gear 9 to rotate, the gear 9 can drive the gear ring 6 to rotate. The roller 7 is provided between the two gear rings 6, and a plurality of rollers 7 are arranged on the gear ring 6 at equal angles in the circumferential direction. In this embodiment, four rollers 7 are provided. The cleaning brush 8 is provided on the outer wall of the roller 7 and corresponds to the outer wall of the heat exchange tube 3. When the gear ring 6 rotates, the roller 7 is driven to clean the outer surface of the heat exchange tube 3 in the circumferential direction. The cleaning brush 8 is a dense thin strip fiber structure, which can clean the gaps between the heat exchange tubes 3.

[0025] A sewage pipe 5 communicating with the smoke passage 2 is provided at the bottom of the casing 1. The sewage pipe 5 is used to discharge sewage in the smoke passage 2.

[0026] In order to improve the cleaning effect, each roller 7 is pivotally connected to the gear ring 6. When the gear ring 6 rotates, the cleaning brush 8 contacts the outside of the heat exchange tube 3 and rotates under the action of resistance. The rotation of the cleaning brush 8 increases the cleaning effect.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A printing and dyeing smoke waste heat conversion device, characterized in that: The invention comprises a casing (1), wherein a smoke passage (2) is arranged in the casing (1) along its length direction, wherein at least three heat exchange tubes (3) are arranged in the smoke passage (2) along its length direction, wherein the heat exchange tubes (3) are spiral-shaped, and a plurality of heat exchange tubes (3) are intersected at an angle and fitted to each other, and wherein a cleaning mechanism for cleaning the outer wall of the heat exchange tube (3) is arranged in the smoke passage (2).

2. The printing and dyeing fume waste heat conversion device according to claim 1 is characterized in that: The cleaning mechanism comprises a spray pipe (4), a plurality of spray heads and a brushing assembly, wherein the plurality of spray heads are arranged along the length direction of the smoke channel (2), the plurality of spray heads are connected to the spray pipe (4) one by one, and the brushing assembly corresponds to the outer wall of the heat exchange tube (3).

3. The printing and dyeing fume waste heat conversion device according to claim 2 is characterized in that: The brushing assembly comprises two gear rings (6), at least three sets of gears (9), at least one set of roller shafts (7) and a cleaning brush (8); the three sets of gears (9) are meshed outside the gear rings (6) in a planetary arrangement; the gears (9) are pivotally connected to a housing (1); the roller shaft (7) is arranged between the two gear rings (6); the cleaning brush (8) is arranged on the outer wall of the roller shaft (7); and a motor (10) coaxially connected to the gears (9) is arranged on the housing (1).

4. The printing and dyeing fume waste heat conversion device according to claim 3 is characterized in that: The gears (9) are provided in four groups in total, and the four groups of gears (9) are distributed outside the gear ring (6) in a rectangular shape.

5. The printing and dyeing fume waste heat conversion device according to claim 3 is characterized in that: Each of the roller shafts (7) is pivotally connected to the gear ring (6).

6. The printing and dyeing fume waste heat conversion device according to claim 1 is characterized in that: The bottom of the casing (1) is provided with a sewage discharge pipe (5) which is in communication with the smoke passage (2).

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