Flue gas waste heat recovery energy-saving equipment

Abstract

The utility model discloses flue gas waste heat recovery energy-saving equipment which comprises an equipment box body, a flue gas inlet is formed in one side of the equipment box body, a flue gas outlet is formed in the other side of the equipment box body, a gas inlet pipeline is fixedly arranged on one side of the top end of the equipment box body, and a gas outlet pipeline is fixedly arranged on the other side of the top end of the equipment box body. And an annular guide pipe communicated with the air inlet pipeline and the air outlet pipeline is fixedly mounted in the equipment box body. Through cooperation of the partition plate and the annular guide pipe, a flue gas flow channel and a gas flow channel are increased, the heat conduction piece is arranged on the surface of the annular guide pipe, the heat conduction performance is improved, the recovery efficiency of waste heat in flue gas is effectively improved, meanwhile, the partition plate is connected with the side face of the fixing plate, and the fixing plate is of a detachable design, so that the heat conduction performance is improved. And smoke dust on the surfaces of the partition plates and the heat-conducting fins can be conveniently cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery, and in particular to a flue gas waste heat recovery energy-saving device. Background Art

[0002] At present, flue gas is generated in the process of industrial processing, and the flue gas will have a large amount of waste heat. In order to reduce industrial production costs, it is necessary to recover and reuse the waste heat in the flue gas. The waste heat recovery of flue gas is mainly carried out through flue gas waste heat recovery equipment.

[0003] When traditional flue gas waste heat recovery equipment is recovering waste heat, the waste heat in the flue gas is mainly recovered through finned tubes inside the flue gas waste heat recovery equipment. Since dust is generated in the flue gas generated by industry, the dust in the flue gas is easy to accumulate on the surface of the finned tubes when passing through the finned tubes inside the waste heat recovery equipment. Over time, thick dust blocks will form on the surface of the finned tubes, thereby affecting the waste heat recovery in the flue gas. For this reason, we have designed a flue gas waste heat recovery energy-saving equipment. Utility Model Content

[0004] The purpose of the utility model is to provide a flue gas waste heat recovery energy-saving device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flue gas waste heat recovery and energy-saving device, comprising an equipment box, a flue gas inlet is provided on one side of the equipment box, a flue gas outlet is provided on the other side of the equipment box, an air inlet pipe is fixedly provided on one side of the top of the equipment box, an air outlet pipe is fixedly provided on the other side of the top of the equipment box, an annular duct connected to the air inlet pipe and the air outlet pipe is fixedly installed inside the equipment box, a heat conducting sheet evenly distributed is fixedly provided on the surface of the annular duct, a fixing plate is snap-connected on one side of the equipment box, a plurality of partitions are installed at intervals on the upper and lower sides of the fixing plate, and the partitions extend to the interior of the equipment box.

[0006] Preferably, a rectangular assembly hole is provided on the front side of the equipment box, and the rectangular assembly hole is nested with the back side of the fixing plate.

[0007] Preferably, grooves are provided on both sides of the back side of the fixing plate, L-shaped blocks are nested inside the two grooves, the L-shaped blocks are in contact with both sides of the inner wall of the rectangular assembly hole, and a return spring is fixedly installed on one side groove wall of the two grooves, and one end of the return spring is fixedly connected to the side of the corresponding L-shaped block.

[0008] Preferably, the groove walls on the other sides of the two grooves are threadedly connected with a threaded push rod, one end of the threaded push rod is in contact and connected with the other side surface of the L-shaped block, and the other end of the threaded push rod is fixedly mounted with a rotating hand wheel.

[0009] Preferably, a support frame is fixedly mounted on the bottom end of the equipment box, and the bottom end of the support frame is provided with evenly distributed anti-slip grooves.

[0010] Preferably, the equipment box body consists of an outer stainless steel shell, an inner stainless steel shell and a thermal insulation board, the outer stainless steel shell and the inner stainless steel shell are nested and connected, and the thermal insulation board is fixed between the outer stainless steel shell and the inner stainless steel shell.

[0011] Technical effects and advantages of the utility model:

[0012] 1. Through the cooperation of the partition and the annular duct, the flow channels of flue gas and gas are increased, and a heat conducting sheet is arranged on the surface of the annular duct to improve the thermal conductivity and effectively improve the recovery efficiency of waste heat in the flue gas. At the same time, the partition is connected to the side of the fixed plate, and the fixed plate is detachable, which is convenient for cleaning the smoke and dust on the surface of the partition and the heat conducting sheet.

[0013] 2. The equipment box is made of an outer stainless steel shell, an inner stainless steel shell and a thermal insulation board, which effectively improves the thermal insulation performance of the equipment box and reduces the heat loss of the flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a structural schematic diagram of a flue gas waste heat recovery energy-saving device.

[0015] Figure 2 This is a schematic diagram of the internal structure of a device box of a flue gas waste heat recovery and energy-saving device of the utility model.

[0016] Figure 3 The utility model is a schematic diagram of the cross-sectional structure of a device box of a flue gas waste heat recovery and energy-saving device.

[0017] Figure 4 This is a schematic diagram of the connection structure between a fixing plate and an equipment box of a flue gas waste heat recovery and energy-saving device of the utility model.

[0018] In the figure: 1. Equipment box; 101. Outer stainless steel shell; 102. Inner stainless steel shell; 103. Thermal insulation board; 2. Air inlet pipe; 3. Air outlet pipe; 4. Fixed plate; 5. Support frame; 6. Rotating hand wheel; 7. Annular duct; 8. Partition; 9. Heat conducting plate; 10. Groove; 11. Reset spring; 12. L-shaped block; 13. Rectangular assembly hole; 14. Threaded push rod. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] The utility model provides Figure 1-4 A flue gas waste heat recovery and energy-saving device shown in the figure includes an equipment box 1, a flue gas inlet is provided on one side of the equipment box 1, a flue gas outlet is provided on the other side of the equipment box 1, an air inlet pipe 2 is fixedly provided on one side of the top of the equipment box 1, and an air outlet pipe 3 is fixedly provided on the other side of the top of the equipment box 1. An annular duct 7 connected with the air inlet pipe 2 and the air outlet pipe 3 is fixedly installed inside the equipment box 1, and a heat conducting sheet 9 evenly distributed is fixedly provided on the surface of the annular duct 7. A fixing plate 4 is snap-connected on one side of the equipment box 1, and a plurality of partitions 8 are installed at intervals on the upper and lower sides of the side of the fixing plate 4, and the partitions 8 extend to the interior of the equipment box 1.

[0021] Specifically, through the cooperation of the partition 8 and the annular duct 7, the flow path of the flue gas and the flow path of the gas are increased, and a heat conductive sheet 9 is arranged on the surface of the annular duct 7 to improve the thermal conductivity and effectively improve the recovery efficiency of the waste heat in the flue gas. At the same time, the partition 8 is connected to the side of the fixed plate 4, and the fixed plate 4 is of a detachable design, which is convenient for cleaning the smoke and dust on the surface of the partition 8 and the heat conductive sheet 9.

[0022] according to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a rectangular assembly hole 13 is opened on the front of the equipment box 1, and the rectangular assembly hole 13 is nested with the back of the fixing plate 4.

[0023] Grooves 10 are provided on both sides of the back side of the fixing plate 4, and L-shaped blocks 12 are nested inside the two grooves 10. The L-shaped blocks 12 are in contact with both sides of the inner wall of the rectangular assembly hole 13. A return spring 11 is fixedly installed on one side groove wall of the two grooves 10, and one end of the return spring 11 is fixedly connected to the side of the corresponding L-shaped block 12.

[0024] The groove walls on the other sides of the two grooves 10 are both threadedly connected with threaded push rods 14 , one end of the threaded push rods 14 is in contact with and connected to the other side surface of the L-shaped block 12 , and the other end of the threaded push rods 14 is fixedly mounted with a rotating hand wheel 6 .

[0025] Specifically, the threaded push rod 14 is driven to rotate by rotating the hand wheel 6, the threaded push rod 14 pushes the L-shaped block 12 to move, and the reset spring 11 controls the reset of the L-shaped block 12 to achieve the embedding and separation of the L-shaped block 12 and the rectangular assembly hole 13, which facilitates the disassembly of the fixing plate 4 and the cleaning of the smoke and dust on the surface of the partition 8 and the annular duct 7.

[0026] according to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a support frame 5 is fixedly installed at the bottom end of the equipment box 1, and the bottom end of the support frame 5 is provided with evenly distributed anti-slip grooves.

[0027] Specifically, the anti-skid grooves provided at the bottom of the support frame 5 increase the stability of the equipment box 1 .

[0028] The equipment box 1 consists of an outer stainless steel shell 101 , an inner stainless steel shell 102 and a thermal insulation board 103 . The outer stainless steel shell 101 and the inner stainless steel shell 102 are nested and connected, and the thermal insulation board 103 is fixed between the outer stainless steel shell 101 and the inner stainless steel shell 102 .

[0029] Specifically, the thermal insulation board 103 is a rock wool board, which improves the thermal insulation performance of the equipment box 1 and reduces the loss of heat from the flue gas inside the equipment box 1.

[0030] Working principle of the utility model: when using the flue gas waste heat recovery and energy-saving equipment, the flue gas enters through the flue gas inlet, and the cold air enters through the air intake pipe 2. The waste heat in the flue gas is recovered through the annular conduit 7 and the heat conductive sheet 9. The heat conductive sheet 9 is made of metal copper and has good thermal conductivity. Through the cooperation of the partition 8 and the annular conduit 7 inside the equipment box 1, the flow channel of the flue gas and the flow channel of the gas are increased, and the waste heat recovery efficiency is improved. When it is necessary to clean the smoke and dust on the surface of the heat conductive sheet 9 and the partition 8, the rotating hand wheel 6 is manually turned to drive the rotation of the threaded push rod 14 by rotating the hand wheel 6. The threaded push rod 14 pushes the L-shaped block 12 to move, so that the L-shaped block 12 is separated from the rectangular assembly hole 13, and then the fixing plate 4 is pulled out, and then the smoke and dust on the surface of the heat conductive sheet 9 and the partition 8 on the inner wall of the equipment box 1 are cleaned, so as to avoid the smoke and dust affecting the conduction of the flue gas flow channel and the thermal conductivity of the heat conductive sheet 9.

[0031] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The specific embodiments described in this article are only used to illustrate the spirit of the utility model. The technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar way, but they will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

Claims

1. A flue gas waste heat recovery energy-saving device, comprising a device housing (1), wherein a flue gas inlet is arranged on one side of the device housing (1), a flue gas outlet is arranged on the other side of the device housing (1), an air inlet duct (2) is fixedly arranged on one side of the top of the device housing (1), and an air outlet duct (3) is fixedly arranged on the other side of the top of the device housing (1), wherein: An annular duct (7) connected to an air inlet duct (2) and an air outlet duct (3) is fixedly installed inside the equipment box (1); evenly distributed heat conducting plates (9) are fixedly installed on the surface of the annular duct (7); a fixing plate (4) is snap-fittedly connected to one side of the equipment box (1); a plurality of partition plates (8) are installed at intervals on the side of the fixing plate (4); and the partition plates (8) extend into the interior of the equipment box (1).

2. The flue gas waste heat recovery and energy-saving equipment according to claim 1 is characterized in that: The front surface of the equipment box (1) is provided with a rectangular assembly hole (13), and the rectangular assembly hole (13) is nested with the back surface of the fixing plate (4).

3. The flue gas waste heat recovery and energy-saving equipment according to claim 2 is characterized in that: Grooves (10) are provided on both sides of the back side of the fixing plate (4), L-shaped clamping blocks (12) are nested inside the two grooves (10), the L-shaped clamping blocks (12) are in contact with both sides of the inner wall of the rectangular assembly hole (13), and a return spring (11) is fixedly installed on one side of the groove wall of the two grooves (10), and one end of the return spring (11) is fixedly connected to the side of the corresponding L-shaped clamping block (12).

4. The flue gas waste heat recovery and energy-saving equipment according to claim 3 is characterized in that: The groove walls on the other sides of the two grooves (10) are both threadedly connected with threaded push rods (14), one end of the threaded push rod (14) is in contact with and connected to the other side of the L-shaped block (12), and the other end of the threaded push rod (14) is fixedly mounted with a rotating hand wheel (6).

5. The flue gas waste heat recovery and energy-saving equipment according to claim 1 is characterized in that: A support frame (5) is fixedly mounted on the bottom end of the equipment box (1), and the bottom end of the support frame (5) is provided with evenly distributed anti-slip grooves.

6. The flue gas waste heat recovery and energy-saving equipment according to claim 5, characterized in that: The equipment box (1) comprises an outer stainless steel shell (101), an inner stainless steel shell (102) and a heat-insulating plate (103); the outer stainless steel shell (101) and the inner stainless steel shell (102) are nested and connected; and a heat-insulating plate (103) is fixedly provided between the outer stainless steel shell (101) and the inner stainless steel shell (102).

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