A waste heat recovery device of a high-temperature sintering furnace for carbon products

Abstract

This utility model relates to the field of sintering furnace technology and discloses a waste heat recovery device for a high-temperature sintering furnace for carbon products, including a housing. By controlling the rotating handle to rotate the support bolt, a scraper is threadedly installed on it and slidably connected to two U-shaped tubes. When the rotating handle is rotated, the support bolt supports the scraper to move on the U-shaped tubes, thereby scraping off the deposits on the U-shaped tubes. The scraped material falls to the bottom of the housing and into a collection tray. The collection tray is removed periodically to clean the scraped material, thus cleaning the U-shaped tubes. By fixing spray boxes on both sides of the housing and installing spray pipes on the upper side of the spray boxes, the water pump draws water from the inside of the spray boxes and filters it through a filter tank before it enters the spray pipes. The water mist comes into contact with the high-temperature air and absorbs the tiny impurities in the gas before falling to the bottom of the spray boxes. The device has the function of recycling water resources and can solve the problem of air pollution from emitted gas.

Description

Technical Field

[0001] This utility model relates to the field of sintering furnace technology, specifically to a waste heat recovery device for a high-temperature sintering furnace for carbon products. Background Technology

[0002] The waste heat recovery device for high-temperature sintering furnaces of carbon products is an energy-saving device used to recover the waste heat of high-temperature exhaust gas generated during the sintering process. By recovering the waste heat of the high-temperature flue gas emitted from the sintering furnace, it can preheat the combustion air or convert it into steam. It can also heat cold water for use. In addition, waste heat recovery can ensure the stable operation of environmental protection facilities and form a closed-loop energy utilization.

[0003] Chinese patent CN218120655U discloses a waste heat recovery device for a high-temperature sintering furnace suitable for carbon products. The device includes a base, with a sintering furnace body mounted on top of the base. An outlet pipe is fixedly connected to one side of the sintering furnace body, and an outlet valve is installed inside the outlet pipe. A recovery box is fixedly connected to the side of the outlet pipe away from the sintering furnace body. This waste heat recovery device, when activated by an oil pump, allows heated heat transfer oil to enter the interior of the sintering furnace body, achieving efficient recovery and utilization of flue gas waste heat, reducing energy loss, and improving energy conservation and environmental protection. When the concentration of flue gas inside the gas storage chamber reaches a certain value, the piston resets and re-blocks the interior of the sealing block. When the gas pressure inside the gas storage chamber drops to a certain level, the plug, under gravity, re-blocks the bottom of the outlet pipe, thus achieving continuous recovery of flue gas heat and improving the stability of the device's operation.

[0004] The above-mentioned device has the effect of sustainable heat recovery, but the gas produced by the high-temperature sintering furnace of carbon products will contain tiny impurities, which are easy to adhere to the internal pipes of the device, which will lead to heat transfer obstruction and greatly reduce the preheating recovery efficiency. At the same time, if the tiny impurities in the gas are not removed before and after the gas is recovered and discharged, it will cause air pollution. Therefore, it is necessary to provide a waste heat recovery device for the high-temperature sintering furnace of carbon products. Utility Model Content

[0005] The purpose of this invention is to provide a waste heat recovery device for a high-temperature sintering furnace for carbon products, so as to solve the problem that existing devices cannot solve the problem of tiny impurities in the air adhering to the pipes and polluting the air.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a waste heat recovery device for a high-temperature sintering furnace for carbon products, comprising a housing, wherein several U-shaped tubes are fixedly installed in parallel through the housing, and two water guide pipes are fixedly installed in parallel on one side of the several U-shaped tubes; a scale scraping mechanism is provided between the several U-shaped tubes of the housing; the scale scraping mechanism includes several fixed seats, the fixed seats are fixedly installed between the housing and the two U-shaped tubes, and a rotating handle is rotatably installed on the fixed seat; a support bolt is fixedly installed at one end of the rotating handle, and a scraper is threaded on the support bolt; a scale collecting tray is slidably installed at the lower part of the housing.

[0007] Preferably, the two water guide pipes are fixedly installed at both ends of the U-shaped pipe, and the spacing between the four straight pipes on the two U-shaped pipes is consistent.

[0008] Preferably, the support bolt is threadedly installed in the middle of the scraper, and the scraper is slidably mounted on the straight pipe of the two U-shaped tubes.

[0009] Preferably, the lower two sides of the box body are composed of two inclined plates, and the dirt collection tray is located between the two inclined plates.

[0010] Preferably, a dust removal mechanism is provided on both sides of the box body. The dust removal mechanism includes two spray boxes and two water pumps. The two spray boxes are respectively fixedly installed on both sides of the box body. A filter tank is fixedly installed between the input end of the water pump and the spray box, and a spray pipe is fixedly installed on the output end of the water pump. A water injection pipe is fixedly installed on one side of the spray box, and a splash shield is fixedly installed on the other side of the spray box.

[0011] Preferably, the spray box has two strip-shaped holes on its upper side, and the box body is adapted to the strip-shaped holes, and the spray pipe is embedded and fixedly installed on the upper side of the spray box.

[0012] Preferably, the output end of the spray pipe is vertically downward, and the narrow opening of the anti-splash bucket is embedded in the box.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1) The waste heat recovery device of the high-temperature sintering furnace for carbon products controls the rotation of the support bolt by controlling the rotating handle. The scraper is threaded on it and slidably connected to two U-shaped tubes. When the rotating handle is turned, the support bolt supports the scraper to move on the U-shaped tubes, thereby scraping off the deposits on the U-shaped tubes. The scraped material will fall to the bottom of the box and into the sludge collection tray. The U-shaped tubes can be cleaned by periodically removing the sludge collection tray and cleaning off the scraped material.

[0015] 2) The waste heat recovery device of the high-temperature sintering furnace for carbon products is constructed by fixing spray boxes on both sides of the furnace body and installing spray pipes on the upper side of the spray boxes. The water pump draws water from the inside of the spray boxes and filters it through the filter tank before it enters the spray pipes. The water mist comes into contact with the high-temperature air and absorbs the tiny impurities in the gas before falling to the bottom of the spray box, thus removing the tiny impurities. The device has the function of recycling water resources and can solve the problem of air pollution from emitted gas. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a waste heat recovery device for a high-temperature sintering furnace for carbon products in an embodiment of this utility model.

[0017] Figure 2 This is a cross-sectional view of the device in an embodiment of the present utility model;

[0018] Figure 3 This is a cross-sectional exploded view of the scraping mechanism in an embodiment of this utility model;

[0019] Figure 4 This is a three-dimensional structural exploded view of the supporting spring and scraper in an embodiment of this utility model;

[0020] Figure 5 This is a cross-sectional view of the spray box in an embodiment of the present invention.

[0021] In the diagram: 1. Box body; 2. U-shaped pipe; 3. Water guide pipe; 4. Scaling mechanism; 401. Fixing base; 402. Rotary handle; 403. Support bolt; 404. Scraper; 405. Scaling tray; 5. Dust removal mechanism; 501. Spray box; 502. Water pump; 503. Filter tank; 504. Spray pipe; 505. Water injection pipe; 506. Splash shield. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1

[0024] Combination Figures 1-4A waste heat recovery device for a high-temperature sintering furnace for carbon products includes a housing 1, through which several U-shaped tubes 2 are fixedly installed in parallel. Two water guide pipes 3 are fixedly installed in parallel on one side of the several U-shaped tubes 2. A scale scraping mechanism 4 is provided between the several U-shaped tubes 2 in the housing 1. The scale scraping mechanism 4 includes several fixed seats 401, which are fixedly installed between the housing 1 and the two U-shaped tubes 2. A rotating handle 402 is rotatably installed on the fixed seat 401. A support bolt 403 is fixedly installed at one end of the rotating handle 402. A scraper 404 is threaded on the support bolt 403. A scale collection tray 405 is slidably installed on the lower part of the housing 1.

[0025] Two water guide pipes 3 are fixedly installed at both ends of the U-shaped pipe 2, so that the two water guide pipes 3 are used for cold water inlet and cold water outlet respectively. The spacing between the four straight pipes on the two U-shaped pipes 2 is consistent. The support bolt 403 is threadedly installed in the middle of the scraper 404. The scraper 404 is slidably installed on the straight pipes of the two U-shaped pipes 2, ensuring that when the rotating handle 402 is rotated to rotate the support bolt 403, the scraper 404 can move on the two U-shaped pipes 2, so that the attached material on the U-shaped pipes 2 is scraped off. The scraped material will fall into the lower side of the box 1. The lower side of the box 1 is composed of two inclined plates, and the scale tray 405 is located between the two inclined plates, ensuring that the scraped material falls into the scale tray 405. The scale tray 405 can be removed and cleaned periodically.

[0026] Example 2

[0027] See Figure 5 The two sides of the housing 1 are provided with dust removal mechanism 5. The dust removal mechanism 5 includes two spray boxes 501 and two water pumps 502. The two spray boxes 501 are fixedly installed on both sides of the housing 1. A filter tank 503 is fixedly installed between the input end of the water pump 502 and the spray box 501. A spray pipe 504 is fixedly installed on the output end of the water pump 502. A water injection pipe 505 is fixedly installed on one side of the spray box 501. A splash shield 506 is fixedly installed on the other side of the spray box 501.

[0028] Two strip-shaped holes are provided on the upper side of the spray box 501. The strip-shaped holes are located on the upper side of the spray box 501, and the box body 1 is adapted to the strip-shaped holes, so that high-temperature gas can enter the box body 1 through the strip-shaped holes. The spray pipe 504 is embedded and fixedly installed on the upper side of the spray box 501, and the output end of the spray pipe 504 is vertically downward, so that the water is sprayed out as water mist, and further absorbs the tiny impurities in the gas before falling into the bottom of the spray box 501. The sewage is filtered through the filter tank 503 and then enters the spray pipe 504 through the water pump 502 to realize the recycling of water. When in use, clean water is injected into the spray box through the water injection pipe 505 to replenish the consumed water. The narrow opening of the anti-splash bucket 506 is embedded in the box body 1 to prevent water mist from entering the box body 1.

[0029] In actual operation, by controlling the rotating handle 402 to rotate the support bolt 403, the scraper 404 is threaded on it and slidably connected to the two U-shaped tubes 2. When the rotating handle 402 is rotated, the support bolt 403 supports the scraper 404 to move on the U-shaped tubes 2, thereby scraping off the deposits on the U-shaped tubes 2. The scraped material will fall to the bottom of the box 1 and into the dirt collection tray 405. The dirt collection tray 405 can be removed periodically to clean the scraped material and thus clean the U-shaped tubes 2.

[0030] By fixing spray boxes 501 on both sides of the housing 1 and installing spray pipes 504 on the upper side of the spray boxes 501, the water pump 502 draws water from the inside of the spray boxes 501 and filters it through the filter tank 503 before it enters the spray pipes 504. This allows the water mist to come into contact with the high-temperature air and absorb tiny impurities in the gas before falling to the bottom of the spray boxes 501, thus removing tiny impurities. During use, clean water is injected into the spray boxes through the water injection pipe 505 to replenish the consumed water. The narrow opening of the anti-splash bucket 506 is embedded in the housing 1 to prevent water mist from entering the housing 1.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waste heat recovery device for a high-temperature sintering furnace for carbon products, comprising a housing (1), wherein a plurality of U-shaped pipes (2) are fixedly installed in parallel through the housing (1), and two water guide pipes (3) are fixedly installed in parallel on one side of the plurality of U-shaped pipes (2), characterized in that: A scraping mechanism (4) is provided between several U-shaped tubes (2) of the box body (1); The scraping mechanism (4) includes several fixed seats (401), which are fixedly installed between the housing (1) and two U-shaped tubes (2). A rotating handle (402) is rotatably installed on the fixed seat (401), and a support bolt (403) is fixedly installed at one end of the rotating handle (402). A scraper (404) is threaded on the support bolt (403), and a dirt-collecting plate (405) is slidably installed on the lower part of the housing (1).

2. The waste heat recovery device for a high-temperature sintering furnace for carbon products according to claim 1, characterized in that: The two water guide pipes (3) are fixedly installed at both ends of the U-shaped pipe (2), and the spacing between the four straight pipes on the two U-shaped pipes (2) is consistent.

3. The waste heat recovery device for a high-temperature sintering furnace for carbon products according to claim 2, characterized in that: The support bolt (403) is threadedly installed in the middle of the scraper (404), and the scraper (404) is slidably mounted on the straight pipe of the two U-shaped tubes (2).

4. The waste heat recovery device for a high-temperature sintering furnace for carbon products according to claim 1, characterized in that: The lower sides of the box (1) are composed of two inclined plates, and the dirt tray (405) is located between the two inclined plates.

5. The waste heat recovery device for a high-temperature sintering furnace for carbon products according to claim 4, characterized in that: Dust removal mechanisms (5) are provided on both sides of the housing (1). The dust removal mechanism (5) includes two spray boxes (501) and two water pumps (502). The two spray boxes (501) are fixedly installed on both sides of the housing (1). A filter tank (503) is fixedly installed between the input end of the water pump (502) and the spray box (501). A spray pipe (504) is fixedly installed on the output end of the water pump (502). A water injection pipe (505) is fixedly installed on one side of the spray box (501), and a splash shield (506) is fixedly installed on the other side of the spray box (501).

6. The waste heat recovery device for a high-temperature sintering furnace for carbon products according to claim 5, characterized in that: The spray box (501) has two strip holes on its upper side, and the box body (1) is adapted to the strip holes. The spray pipe (504) is embedded and fixedly installed on the upper side of the spray box (501).

7. The waste heat recovery device for a high-temperature sintering furnace for carbon products according to claim 6, characterized in that: The output end of the spray pipe (504) is vertically downward, and the narrow opening of the anti-splash bucket (506) is embedded in the box (1).

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