Heat exchanger for heating furnace

Abstract

The utility model relates to the technical field of heat exchangers, and in particular to a heat exchanger for a heating furnace, comprising a shell, wherein: the bottom end of the shell is connected to an air inlet hopper, the upper end of the shell is connected to an air outlet hopper, a heat exchange tube for heat exchange is connected to the shell, and an anti-sticking mechanism for preventing dust from adhering to the heat exchange tube is connected to the shell; the anti-sticking mechanism comprises a scraper, the scraper is slidably connected to the heat exchange tube, a connecting rod is fixedly connected to the heat exchange tube, a fixed tube is fixedly connected to the shell, the connecting rod passes through the fixed tube, and a driving component for driving the connecting rod to move is connected to the fixed tube. The utility model drives the connecting rod to reciprocate in the horizontal direction after the driving component is started, and the connecting rod drives the scraper to move. After the scraper moves, the dust adhering to the heat exchange tube is cleaned, so that the dust is separated from the heat exchange tube, and the dust is prevented from adhering to the heat exchange tube and reducing the heat exchange effect of the heat exchange tube.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a heat exchanger for a heating furnace. Background Art

[0002] In the metallurgical industry, a heating furnace is a device that heats materials or workpieces to the rolling and forging temperature. Heating furnaces are used in many industries such as petroleum, chemical industry, metallurgy, machinery, heat treatment, surface treatment, building materials, electronics, materials, light industry, daily chemicals, and pharmaceuticals. When heated by a heating furnace, the heating furnace will produce flue gas with a high temperature. In order to recycle the heat in the flue gas, the flue gas is cooled by heat exchanger. When the heat exchanger is exchanging heat with the flue gas, the dust in the flue gas adheres to the heat exchange tube. After the dust wraps the flue gas, the heat exchange effect of the heat exchange tube on the flue gas is reduced. Utility Model Content

[0003] The utility model aims to solve the problem in the prior art that dust in the flue gas adheres to the heat exchange tube, and after the dust wraps the flue gas, the heat exchange effect of the heat exchange tube on the flue gas is reduced, and a heat exchanger for a heating furnace is proposed.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A heat exchanger for a heating furnace is designed, comprising a shell, wherein:

[0006] The bottom end of the shell is connected to an air inlet hopper, the upper end of the shell is connected to an air outlet hopper, a heat exchange tube for heat exchange is connected to the shell, and an anti-sticking mechanism for preventing dust from adhering to the heat exchange tube is connected to the shell;

[0007] The anti-sticking mechanism includes a scraper, which is slidably connected to the heat exchange tube. A connecting rod is fixedly connected to the heat exchange tube. A fixed tube is fixedly connected to the shell. The connecting rod passes through the fixed tube. A driving component for driving the connecting rod to move is connected to the fixed tube.

[0008] Preferably, a mounting plate is fixedly connected to the shell.

[0009] Preferably, the driving assembly includes a fixing plate, the fixing plate is fixedly connected to the fixing tube, an electric telescopic rod is fixedly connected to the fixing plate, the telescopic end of the electric telescopic rod is fixedly connected to a connecting block, and the connecting block is fixedly connected to the connecting rod.

[0010] Preferably, a filtering mechanism is fixedly connected to the upper end of the air outlet hopper, and the filtering mechanism includes a fixing frame, which is connected to the upper end of the air outlet hopper, a filter is fixedly connected to the upper end of the fixing frame, and collection boxes are connected to both sides of the interior of the fixing frame.

[0011] Preferably, the fixing frame and the collecting box are an integral structure.

[0012] The utility model provides a heat exchanger for a heating furnace, which has the following beneficial effects:

[0013] After the driving component is started, the connecting rod is driven to reciprocate in the horizontal direction, and the connecting rod drives the scraper to move. After the scraper moves, the dust adhering to the heat exchange tube is cleaned, so that the dust is separated from the heat exchange tube, avoiding the dust adhering to the heat exchange tube and reducing the heat exchange effect of the heat exchange tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of a heat exchanger for a heating furnace proposed by the utility model;

[0015] Figure 2 This is a schematic cross-sectional view of a heat exchanger for a heating furnace proposed by the utility model;

[0016] Figure 3 The utility model is a schematic diagram of the connection structure of a heat exchange tube and an anti-sticking mechanism in a heat exchanger for a heating furnace.

[0017] In the figure: shell 1, air inlet hopper 2, air outlet hopper 3, heat exchange tube 4, anti-sticking mechanism 5, filtering mechanism 6, scraper 51, connecting rod 52, fixed tube 53, driving assembly 54, fixed plate 541, electric telescopic rod 542, connecting block 543, fixing frame 61, filter screen 62, collecting box 63. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] Example 1

[0020] Reference Figure 1-3 , a heat exchanger for a heating furnace, comprising a shell 1, wherein:

[0021] The shell 1 is fixedly connected with a mounting plate, the bottom end of the shell 1 is connected with an air inlet hopper 2, the upper end of the shell 1 is connected with an air outlet hopper 3, the shell 1 is connected with a heat exchange tube 4 for heat exchange, and the shell 1 is connected with an anti-sticking mechanism 5 for preventing dust from adhering to the heat exchange tube 4. When the flue gas is heat exchanged, the flue gas enters the shell 1 through the air inlet hopper 2, and the flue gas entering the shell 1 contacts the heat exchange tube 4, and the heat exchange tube 4 exchanges heat with the flue gas. The flue gas after heat exchange is released from the air outlet hopper 3, and the anti-sticking mechanism 5 is activated at set intervals. After the anti-sticking mechanism 5 is activated, the dust adhering to the heat exchange tube 4 is cleaned to maintain the heat exchange effect of the heat exchange tube 4 on the flue gas;

[0022] The anti-sticking mechanism 5 includes a scraper 51, which is slidably connected to the heat exchange tube 4, a connecting rod 52 is fixedly connected to the heat exchange tube 4, a fixed tube 53 is fixedly connected to the shell 1, the connecting rod 52 passes through the fixed tube 53, and the fixed tube 53 is connected to a driving assembly 54 for driving the connecting rod 52 to move. After the driving assembly 54 is started, it drives the connecting rod 52 to reciprocate in the horizontal direction, and the connecting rod 52 drives the scraper 51 to move. After the scraper 51 moves, it cleans the dust adhered to the heat exchange tube 4, so that the dust is separated from the heat exchange tube 4, and the dust is prevented from adhering to the heat exchange tube 4 and reducing the heat exchange effect of the heat exchange tube 4;

[0023] The driving assembly 54 includes a fixed plate 541, which is fixedly connected to the fixed tube 53. The fixed plate 541 is fixedly connected to an electric telescopic rod 542. The telescopic end of the electric telescopic rod 542 is fixedly connected to a connecting block 543. The connecting block 543 is fixedly connected to the connecting rod 52. After the electric telescopic rod 542 is powered on and started, it drives the connecting block 543 to move in the horizontal direction, and the connecting block 543 drives the connecting rod 52 to move in the horizontal direction.

[0024] Working process: when the flue gas is exchanged with heat, the flue gas enters the shell 1 through the air inlet 2, the flue gas entering the shell 1 contacts the heat exchange tube 4, the heat exchange tube 4 exchanges heat with the flue gas, and the flue gas after heat exchange is released from the air outlet 3. After the electric telescopic rod 542 is powered on and started, it drives the connecting block 543 to move in the horizontal direction, the connecting block 543 drives the connecting rod 52 to move in the horizontal direction, and the connecting rod 52 drives the scraper 51 to move. After the scraper 51 moves, it cleans the dust adhering to the heat exchange tube 4, so that the dust is separated from the heat exchange tube 4, to prevent the dust from adhering to the heat exchange tube 4 and reducing the heat exchange effect of the heat exchange tube 4.

[0025] Example 2

[0026] The dust adhering to the heat exchange tube 4 is cleaned by the scraper 51, and the scraped dust is in large pieces. The large pieces of dust are released from the gas outlet hopper 3 along with the flue gas. Figure 2As another preferred embodiment of the utility model, on the basis of embodiment 1, the upper end of the air outlet hopper 3 is fixedly connected with a filtering mechanism 6, and the filtering mechanism 6 includes a fixing frame 61, and the fixing frame 61 is connected to the upper end of the air outlet hopper 3, and the upper end of the fixing frame 61 is fixedly connected with a filter screen 62, and the inner sides of the fixing frame 61 are connected with collecting boxes 63, and the fixing frame 61 and the collecting box 63 are an integrated structure. The smoke released from the air outlet hopper 3 enters the fixing frame 61, and the smoke in the fixing frame 61 passes through the filter screen 62. The filter screen 62 filters the dust in the smoke, and part of the filtered dust falls into the collecting box 63. The collecting box 63 collects the filtered dust, and the dust in the smoke is filtered by the filter screen 62 to reduce the dust in the smoke.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A heat exchanger for a heating furnace, characterized in that: It comprises a housing (1), wherein: The bottom end of the shell (1) is connected to an air inlet hopper (2), the upper end of the shell (1) is connected to an air outlet hopper (3), a heat exchange tube (4) for heat exchange is connected to the shell (1), and an anti-sticking mechanism (5) for preventing dust from adhering to the heat exchange tube (4) is connected to the shell (1); The anti-sticking mechanism (5) comprises a scraper (51), the scraper (51) is slidably connected to the heat exchange tube (4), a connecting rod (52) is fixedly connected to the heat exchange tube (4), a fixed tube (53) is fixedly connected to the shell (1), the connecting rod (52) passes through the fixed tube (53), and a driving component (54) is connected to the fixed tube (53) for driving the connecting rod (52) to move.

2. The heat exchanger for a heating furnace according to claim 1, characterized in that: A mounting plate is fixedly connected to the housing (1).

3. The heat exchanger for a heating furnace according to claim 1, characterized in that: The driving assembly (54) comprises a fixing plate (541), the fixing plate (541) being fixedly connected to the fixing tube (53), the fixing plate (541) being fixedly connected to an electric telescopic rod (542), the telescopic end of the electric telescopic rod (542) being fixedly connected to a connecting block (543), and the connecting block (543) being fixedly connected to the connecting rod (52).

4. The heat exchanger for a heating furnace according to claim 1, characterized in that: The upper end of the air outlet hopper (3) is fixedly connected to a filtering mechanism (6), the filtering mechanism (6) comprising a fixing frame (61), the fixing frame (61) being connected to the upper end of the air outlet hopper (3), the upper end of the fixing frame (61) being fixedly connected to a filter screen (62), and both sides of the interior of the fixing frame (61) being connected to a collecting box (63).

5. The heat exchanger for a heating furnace according to claim 4, characterized in that: The fixing frame (61) and the collecting box (63) are an integral structure.

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