Waste heat recovery device of heating furnace

Abstract

The utility model discloses a heating furnace waste heat recovery device, which belongs to the technical field of heating furnace devices, and comprises a furnace body, a smoke conveying pipe and a cleaning box, the cleaning box is fixedly sleeved on the smoke conveying pipe, the top surface of the cleaning box is provided with a rectangular hole, a rectangular block is clamped in the rectangular hole, and the rectangular block is fixedly sleeved on the smoke conveying pipe. The lower end of the rectangular block is fixedly connected with a filter screen, the filter screen extends into the cleaning box, the interior of the cleaning box is longitudinally and slidably connected with a transverse plate, the lower end of the transverse plate is fixedly connected with a scraping plate, the lower end of the scraping plate is tightly attached to the side wall of the filter screen, and the top surface of the cleaning box is fixedly provided with a motor. And the tail end of a rotating shaft of the motor is fixedly connected with a lead screw, the lead screw rotationally extends into the cleaning box, the lead screw penetrates through the transverse plate in a threaded mode, and the tail end of the smoke conveying pipe is fixedly connected with a heat exchange box. Compared with the prior art, the device can effectively filter solid particles in waste heat flue gas, so that the waste heat recovery efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of heating furnace devices, in particular to a heating furnace waste heat recovery device. Background Art

[0002] Chamber gas heating furnaces are widely used in industrial production. They are the main production equipment in smelting, forging, manufacturing, heat treatment, drying and other industries. Chamber heating furnaces that use gas and liquid fuel as furnace heat sources are extremely widely used. At present, in order to achieve energy saving, most chamber gas heating furnaces will recycle the flue gas heat.

[0003] During the waste heat recovery process of the existing heating furnace, the flue gas with heat is mixed with a large amount of solid particles, and these solid particles will adhere to the inside of the pipe or the heat recovery device, which will affect the heat conduction and the efficiency of waste heat recovery. Therefore, a heating furnace waste heat recovery device is urgently needed to solve this problem. Utility Model Content

[0004] The utility model aims to provide a waste heat recovery device for a heating furnace to solve the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a waste heat recovery device for a heating furnace, comprising a furnace body in the waste heat recovery device for a heating furnace, the furnace body having a smoke outlet fixedly connected to a smoke conveying pipe, the top surface of the furnace body being fixedly connected to a cleaning box, the cleaning box being fixedly sleeved on the smoke conveying pipe, the top surface of the cleaning box being provided with a rectangular hole, the inside of the rectangular hole being clamped with a rectangular block, the lower end of the rectangular block being fixedly connected to a filter screen, and the filter screen extends to the inside of the cleaning box, the inside of the cleaning box being longitudinally slidably connected to a cross plate, the lower end of the cross plate being fixedly connected to a scraper, the lower end of the scraper being tightly fitted on the side wall of the filter screen, the top surface of the cleaning box being fixedly installed with a motor, the end of the rotating shaft of the motor being fixedly connected to a screw rod, the screw rod being rotatably extended to the inside of the cleaning box, the screw rod threadingly penetrates the cross plate, and the end of the smoke conveying pipe is fixedly connected to a heat exchange box.

[0006] Preferably, a limit rod is longitudinally fixedly connected to the interior of the cleaning box, and the limit rod and the lead screw are symmetrically arranged.

[0007] Preferably, the limiting rod slides through the transverse plate.

[0008] Preferably, the inner wall of the cleaning box is symmetrically provided with strip grooves, and the side walls of the transverse plate are symmetrically fixedly connected with limiting blocks.

[0009] Preferably, the two limit blocks fixedly connected to the side walls of the transverse plate are respectively slidably connected to the insides of two strip-shaped grooves opened on the inner wall of the cleaning box.

[0010] Preferably, a strip-shaped hole is provided at the lower side of the cleaning box, and a collecting frame is clamped inside the strip-shaped hole.

[0011] Preferably, one side of the collecting frame is attached to the side wall of the filter screen.

[0012] Compared with the prior art, the technical effects and advantages of the utility model are as follows:

[0013] When the solid particles in the waste heat flue gas need to be filtered, the rectangular block and the filter screen are first inserted into the rectangular hole to filter the solid particles in the flue gas; when the dust on the surface of the filter screen needs to be cleaned, the motor is first started to drive the screw rod to rotate, and the screw rod drives the horizontal plate with threads passing through the rod wall to move downward, and at the same time, the horizontal plate and the scraper fixedly connected to the lower end of the horizontal plate are used to scrape the solid particles on the surface of the screen downward, so as to effectively clean the surface of the filter screen, thereby improving the filtering effect of the filter screen. Compared with the prior art, the device can effectively filter the solid particles in the waste heat flue gas, thereby improving the recovery efficiency of the waste heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a three-dimensional cross-sectional view of the cleaning box in the utility model;

[0017] Figure 3 It is a schematic diagram of the connection of the cross plate, screw rod and scraper in the utility model.

[0018] Description of reference numerals:

[0019] In the figure: 1. furnace body; 2. smoke conveying pipe; 3. cleaning box; 4. heat exchange box; 5. rectangular hole; 6. rectangular block; 7. filter; 9. horizontal plate; 10. motor; 11. screw rod; 12. scraper; 13. limit rod; 14. limit block; 15. strip hole; 16. collection frame. DETAILED DESCRIPTION

[0020] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0021] Unless otherwise defined, the directions of up, down, left, right, front, back, inside and outside involved in this document are based on the directions of up, down, left, right, front, back, inside and outside in the figures shown in the present utility model, and are explained here together.

[0022] The connection method can be bonding, welding, bolt connection, etc., depending on actual needs.

[0023] like Figures 1 to 3 The main structure of a waste heat recovery device for a heating furnace shown in the figure is a furnace body 1, a smoke outlet of the furnace body 1 is fixedly connected to a smoke conveying pipe 2, a cleaning box 3 is fixedly connected to the top surface of the furnace body 1, the cleaning box 3 is fixedly sleeved on the smoke conveying pipe 2, a rectangular hole 5 is opened on the top surface of the cleaning box 3, a rectangular block 6 is clamped inside the rectangular hole 5, a filter screen 7 is fixedly connected to the lower end of the rectangular block 6, and the filter screen 7 extends to the inside of the cleaning box 3, a cross plate 9 is longitudinally slidably connected to the inside of the cleaning box 3, a scraper 12 is fixedly connected to the lower end of the cross plate 9, and the lower end of the scraper 12 is tightly fitted on the side wall of the filter screen 7, a motor 10 is fixedly installed on the top surface of the cleaning box 3, and a screw rod is fixedly connected to the end of the rotating shaft of the motor 10 11, the screw rod 11 rotates and extends to the interior of the cleaning box 3, the screw rod 11 threadedly penetrates the cross plate 9, the interior of the cleaning box 3 is longitudinally fixedly connected with a limit rod 13, and the limit rod 13 and the screw rod 11 are symmetrically arranged, the limit rod 13 slides through the cross plate 9, the inner wall of the cleaning box 3 is symmetrically provided with strip grooves, the side wall of the cross plate 9 is symmetrically fixedly connected with limit blocks 14, the two limit blocks 14 fixedly connected on the side wall of the cross plate 9 are respectively slidably connected to the inside of the two strip grooves opened on the inner wall of the cleaning box 3, thanks to the setting of the limit rod 13 and the two limit blocks 14, the sliding direction of the cross plate 9 and the scraper 12 is effectively limited, and the end of the smoke conveying pipe 2 is fixedly connected with the heat exchange box 4.

[0024] A strip hole 15 is provided at the lower side of the cleaning box 3, and a collecting frame 16 is clamped inside the strip hole 15. One side of the collecting frame 16 is attached to the side wall of the filter screen 7. The collecting frame 16 can effectively collect solid particles and dust scraped off the surface of the filter screen 7, thereby facilitating the removal of dust from the interior of the cleaning box 3.

[0025] How it works

[0026] When the waste heat recovery device of the heating furnace is used, the rectangular block 6 and the filter screen 7 fixedly connected to the lower end of the rectangular block 6 are first inserted into the interior of the rectangular hole 5 and the rectangular block 6 is fixedly installed. Then, the flue gas with waste heat in the furnace body 1 will enter the interior of the cleaning box 3 through the smoke conveying pipe 2, so as to filter the solid particles in the flue gas through the filter screen 7; when the dust on the surface of the filter screen 7 is to be cleaned, the motor 10 is first started, and the motor 10 drives the screw rod 11 fixedly connected to the end of its rotating shaft to rotate, and the screw rod 11 drives the cross plate 9 with threads passing through its rod wall to move downward, and at the same time, the cross plate 9 and the scraper 12 fixedly connected to the lower end thereof are used to scrape the solid particles on the surface of the filter screen 7 downward, and at the same time, thanks to the setting of the limit rod 13 and the two limit blocks 14, the sliding direction of the cross plate 9 and the scraper 12 is effectively limited, so as to effectively clean the surface of the filter screen 7, thereby improving the filtering effect of the filter screen 7.

[0027] It should be noted that, in this article, relational terms such as one and two are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0028] 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 heating furnace waste heat recovery device, comprising a furnace body (1) in the heating furnace waste heat recovery device, characterized in that: The smoke outlet of the furnace body (1) is fixedly connected to a smoke delivery pipe (2), the top surface of the furnace body (1) is fixedly connected to a cleaning box (3), the cleaning box (3) is fixedly sleeved on the smoke delivery pipe (2), the top surface of the cleaning box (3) is provided with a rectangular hole (5), the interior of the rectangular hole (5) is clamped with a rectangular block (6), the lower end of the rectangular block (6) is fixedly connected to a filter screen (7), and the filter screen (7) extends to the interior of the cleaning box (3), and the interior of the cleaning box (3) is longitudinally slidably connected A horizontal plate (9) is provided, the lower end of the horizontal plate (9) is fixedly connected to a scraper (12), the lower end of the scraper (12) is tightly fitted on the side wall of the filter screen (7), a motor (10) is fixedly installed on the top surface of the cleaning box (3), the end of the rotating shaft of the motor (10) is fixedly connected to a screw rod (11), the screw rod (11) rotates and extends to the inside of the cleaning box (3), the screw rod (11) is threadedly penetrated through the horizontal plate (9), and the end of the smoke conveying pipe (2) is fixedly connected to a heat exchange box (4).

2. A heating furnace waste heat recovery device according to claim 1, characterized in that: A limiting rod (13) is longitudinally fixedly connected to the interior of the cleaning box (3), and the limiting rod (13) and the screw rod (11) are symmetrically arranged.

3. A heating furnace waste heat recovery device according to claim 2, characterized in that: The limiting rod (13) slides through the transverse plate (9).

4. The heating furnace waste heat recovery device according to claim 1, characterized in that: The inner wall of the cleaning box (3) is symmetrically provided with strip-shaped grooves, and the side walls of the transverse plate (9) are symmetrically fixedly connected with limit blocks (14).

5. A heating furnace waste heat recovery device according to claim 4, characterized in that: The two limit blocks (14) fixedly connected to the side wall of the horizontal plate (9) are respectively slidably connected to the inside of two strip-shaped grooves opened on the inner wall of the cleaning box (3).

6. The heating furnace waste heat recovery device according to claim 1, characterized in that: A strip-shaped hole (15) is provided at the lower side of one side of the cleaning box (3), and a collection frame (16) is clamped inside the strip-shaped hole (15).

7. A heating furnace waste heat recovery device according to claim 6, characterized in that: One side of the collecting frame (16) is attached to the side wall of the filter screen (7).

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