A dust removal heating furnace

Abstract

The utility model provides a dust removal heating furnace, which relates to the technical field of heating furnaces, including a heating furnace body, a dust removal device and a purification device, wherein a dust suction port is arranged on the heating furnace body; the dust removal device is connected to the dust suction port, a drain port is arranged at the bottom of the dust removal device, and an air outlet is arranged at the top of the dust removal device; the purification device is connected to the bottom of the dust removal device, and the purification device includes a water suction pipe, a filter box and a filter structure, one end of the water suction pipe is connected to the drain port, the end of the water suction pipe away from the dust removal device is connected to the filter box, a first water suction pump is arranged on the water suction pipe, the filter structure is arranged in the filter box, and a drain pipe is arranged at the end of the filter box away from the water suction pipe, and the drain pipe is connected to the dust removal device; the dust removal heating furnace of the utility model can realize the reuse of waste water while effectively protecting the environment.

Description

Technical Field

[0001] The utility model relates to the technical field of heating furnaces, in particular to a dust removal heating furnace. Background Art

[0002] A heating furnace is a device that heats materials or workpieces to the rolling and forging temperature. Heating furnaces include continuous heating furnaces and chamber heating furnaces. Heating furnaces used for metal heat treatment are also called heat treatment furnaces. Furnaces that heat steel ingots before initial rolling or make the internal temperature of steel ingots uniform are called soaking furnaces. In a broad sense, heating furnaces also include soaking furnaces and heat treatment furnaces. With the widespread application of aluminum in the fields of automobiles, aviation, and construction, the aluminum processing industry has a growing demand for aluminum heating furnaces. Existing aluminum heating furnaces burn fuel when heating materials and will generate a lot of dust. Dust removal operations need to be performed in a timely manner to avoid dust pollution of the environment.

[0003] A Chinese invention patent with publication number CN109163560A discloses a heating furnace with a dust removal device, including a furnace body, a cylinder fixedly connected to the inner wall of the furnace body, the cylinder divides the furnace body into a heating chamber and a combustion chamber, a burner fixedly connected to the inner wall of the furnace body, a fuel pipe fixedly connected to the side wall of the furnace body, a support plate fixedly connected to the side wall of the furnace body, a dust removal water tank fixedly connected to the upper surface of the support plate, a furnace cover fixedly connected to the upper surface of the furnace body, and an exhaust fan fixedly connected to the upper surface of the furnace body. When the heating furnace is working, first the fuel enters the furnace body through the fuel pipe and burns, and then the generated dust is transported to the dust removal water tank through the exhaust fan and the U-shaped smoke exhaust pipe, and then the dust enters the dust removal water tank and is treated with water dust reduction, and then the dust-free smoke is discharged.

[0004] However, in the above technical solution, the wastewater in the dust removal water tank after water dust reduction treatment is directly discharged from the drain pipe, which cannot be reused and causes secondary pollution to the environment. It not only wastes water resources, but also may cause further damage to the ecological environment due to harmful substances contained in the wastewater. Utility Model Content

[0005] Based on this, in order to solve the problem of secondary pollution to the environment caused by the inability to reuse wastewater, the purpose of the utility model is to provide a dust removal heating furnace, and its specific technical solution is as follows:

[0006] A dust removal heating furnace comprises a heating furnace body, a dust removal device and a purification device, wherein the heating furnace body is provided with a dust suction port; the dust removal device is connected to the dust suction port, a drain port is provided at the bottom of the dust removal device, and an air outlet is provided at the top of the dust removal device; the purification device is connected to the bottom of the dust removal device, the purification device comprises a water suction pipe, a filter box and a filter structure, one end of the water suction pipe is connected to the drain port, the end of the water suction pipe away from the dust removal device is connected to the filter box, a first water suction pump is provided on the water suction pipe, the filter structure is arranged in the filter box, and a drain pipe is provided at the end of the filter box away from the water suction pipe, and the drain pipe is connected to the dust removal device.

[0007] Furthermore, the dust removal device includes a dust suction pipe, a dust removal box and a dust removal structure. The dust removal box is provided with a dust inlet, one end of the dust suction pipe is connected to the dust suction port, and the end of the dust suction pipe away from the dust suction port is connected to the dust inlet, an air suction pump is provided on the dust suction pipe, the dust removal structure is arranged in the dust removal box, the drain port is arranged at the bottom of the dust removal box, the air outlet is arranged at the top of the dust removal box, and the dust removal structure is connected to the drain pipe.

[0008] Furthermore, the dust removal structure includes a spray assembly and a filter assembly, the spray assembly is arranged above the dust inlet, the filter assembly is arranged below the dust inlet, and the spray assembly is connected to the drain pipe.

[0009] Furthermore, the spray assembly includes a second water suction pump, a water storage tank, a water outlet pipe and a plurality of spray nozzles, the water storage tank is connected to the drain pipe, the water outlet pipe is connected to the water storage tank, the second water suction pump is arranged on the drain pipe, each spray nozzle is arranged on the water outlet pipe, and the water storage tank is provided with a water inlet.

[0010] Furthermore, the water outlet pipe is arranged in a spiral shape, and the spray nozzles are evenly and equidistantly arranged on the water outlet pipe.

[0011] Furthermore, the filter assembly includes a coarse metal grid and a fine metal grid, and the coarse metal grid and the fine metal grid are sequentially arranged below the dust inlet from top to bottom.

[0012] Furthermore, the bottom of the filter box body is gradually reduced from top to bottom to form a cone, and the drain port is arranged at the bottom of the cone.

[0013] Further, the filtering structure includes a first filter part and a second filter part, the first filter part and the second filter part are connected, the water suction pipe is connected to the first filter part, and the drainage pipe is connected to an end of the second filter part away from the first filter part.

[0014] Furthermore, the first filter portion includes a first outer shell, a first filter layer, a second filter layer and a partition screen, the first filter layer, the second filter layer and the partition screen are all arranged in the first outer shell, the partition screen is arranged between the first filter layer and the second filter layer, the first filter layer is arranged on a side close to the water suction pipe, and the first outer shell is connected to the second filter portion.

[0015] Furthermore, the second filter portion includes a second shell and a ceramic filter element, the ceramic filter element is arranged in the second shell, the second shell is communicated with the first filter portion, and the drain pipe is communicated with an end of the second shell away from the first filter portion.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows: the dust removal heating furnace of the utility model is provided with a dust removal device, and the dust removal device effectively captures the smoke and exhaust gas generated by the heating furnace body through the dust suction port, ensuring that the smoke can be efficiently sucked in and processed, and a large amount of smoke and particulate matter are intercepted, which greatly reduces the content of harmful substances in the exhaust gas. The treated exhaust gas is then discharged through the outlet, and its pollution degree to the environment is effectively reduced; by providing a purification device, the purification device includes a water suction pipe, a filter box and a filter structure, and the wastewater discharged from the bottom of the dust removal device can be effectively collected and processed. The wastewater is first sucked into the filter box through the water suction pipe and the first water suction pump, and then filtered through the filter structure. The filter structure can effectively remove impurities and particulate matter in the wastewater, so that the wastewater meets the reuse standard, and the treated wastewater returns to the dust removal device through the drain pipe, realizing the recycling of wastewater; the dust removal heating furnace of the utility model can realize the reuse of wastewater while effectively protecting the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention may be further understood from the following description in conjunction with the accompanying drawings. The components in the drawings are not necessarily drawn to scale, but the emphasis is placed on illustrating the principles of the embodiments. In different views, the same figure numerals designate corresponding parts.

[0018] Figure 1 It is a structural schematic diagram of a dust removal heating furnace according to an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of the internal structure of the dust removal device according to one embodiment of the utility model;

[0020] Figure 3 It is a top view of the water outlet pipe according to one embodiment of the utility model;

[0021] Figure 4 It is a schematic diagram of the internal structure of a purification device described in one embodiment of the utility model.

[0022] Description of reference numerals:

[0023] 1. Heating furnace body; 2. Dust removal device; 21. Drain port; 22. Air outlet; 23. Dust suction pipe; 24. Dust removal box; 241. Dust inlet; 25. Dust removal structure; 251. Spray assembly; 2511. Second water suction pump; 2512. Water storage tank; 2513. Water outlet pipe; 2514. Spray nozzle; 252. Filter assembly; 2521. Coarse metal grid; 2522. Fine metal grid; 26. Air suction pump; 3. Purification device; 31. Water suction pipe; 32. Filter box; 33. Filter structure; 331. First filter part; 3311. First shell; 3312. First filter layer; 3313. Second filter layer; 3314. Partition net; 332. Second filter part; 3321. Second shell; 3322. Ceramic filter element; 34. First water suction pump; 35. Drain pipe. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with its embodiments. It should be understood that the specific implementation methods described here are only used to explain the utility model and do not limit the protection scope of the utility model.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0027] The “first” and “second” mentioned in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.

[0028] like Figure 1-4As shown, a dust removal heating furnace in one embodiment of the utility model comprises a heating furnace body 1, a dust removal device 2 and a purification device 3, the heating furnace body 1 is provided with a dust suction port; the dust removal device 2 is connected to the dust suction port, a drain port 21 is provided at the bottom of the dust removal device 2, and an air outlet 22 is provided at the top of the dust removal device 2; the purification device 3 is connected to the bottom of the dust removal device 2, the purification device 3 comprises a water suction pipe 31, a filter box 32 and a filtering structure 33, one end of the water suction pipe 31 is connected to the drain port 21, the end of the water suction pipe 31 away from the dust removal device 2 is connected to the filter box 32, a first water suction pump 34 is provided on the water suction pipe 31, the filtering structure 33 is arranged in the filter box 32, the end of the filter box 32 away from the water suction pipe 31 is provided with a drain pipe 35, the drain pipe 35 is connected with the dust removal device 2, and the dust removal device 2 is provided with a dust suction port. The outlet effectively captures the smoke and exhaust gas generated by the heating furnace body 1, ensuring that the smoke can be efficiently inhaled and treated, a large amount of smoke and particulate matter is intercepted, greatly reducing the content of harmful substances in the exhaust gas, and the treated exhaust gas is discharged through the outlet 22, which effectively reduces the degree of pollution to the environment; by setting a purification device 3, the purification device 3 includes a water suction pipe 31, a filter box 32 and a filter structure 33, the waste water discharged from the bottom of the dust removal device 2 can be effectively collected and treated, the waste water is first sucked into the filter box 32 through the water suction pipe 31 and the first water suction pump 34, and then filtered through the filter structure 33, the filter structure 33 can effectively remove impurities and particulate matter in the waste water, so that the waste water meets the reuse standard, and the treated waste water returns to the dust removal device 2 through the drain pipe 35, realizing the recycling of waste water.

[0029] As a preferred embodiment of the utility model, it may also have the following additional technical features: the dust removal device 2 includes a dust suction pipe 23, a dust removal box 24 and a dust removal structure 25, the dust removal box 24 is provided with a dust inlet 241, one end of the dust suction pipe 23 is connected to the dust suction port, and the end of the dust suction pipe 23 away from the dust suction port is connected to the dust inlet 241, and the dust suction pipe 23 is provided with an air suction pump 26, through the action of the air suction pump 26, the smoke generated by the heating furnace body 1 is sucked into the dust removal box 24, and the dust removal structure 25 is arranged in the dust removal box 24. Inside the box body 24, the drain port 21 is arranged at the bottom of the dust removal box body 24, the air outlet 22 is arranged at the top of the dust removal box body 24, the dust removal structure 25 is connected with the drain pipe 35, and the drain port 21 arranged at the bottom of the dust removal box body 24 enables the waste water generated during the dust removal process to be discharged smoothly, which is convenient for subsequent collection and treatment. After being connected to the purification device 3, the waste water can be extracted and filtered, and then returned to the dust removal device 2, so as to realize the recycling of waste water and improve the efficiency and convenience of waste water recovery.

[0030] As a preferred embodiment of the utility model, it may also have the following additional technical features: the dust removal structure 25 includes a spray component 251 and a filter component 252, the spray component 251 is arranged above the dust inlet 241, and the filter component 252 is arranged below the dust inlet 241, and the spray component 251 is connected to the drain pipe 35. Through the cooperation of the spray component 251 and the filter component 252, smoke particles and other harmful substances can be effectively removed to prevent these pollutants from being directly discharged into the environment.

[0031] As a preferred embodiment of the utility model, it may also have the following additional technical features: the spray assembly 251 includes a second water suction pump 2511, a water storage tank 2512, a water outlet pipe 2513 and a plurality of spray nozzles 2514, the water storage tank 2512 is connected to the drain pipe 35, the water outlet pipe 2513 is connected to the water storage tank 2512, the second water suction pump 2511 is arranged on the drain pipe 35, and each spray nozzle 2514 is arranged on the water outlet pipe 2513. Waste water is extracted from the drainage pipe 35 and stored in the water storage tank 2512. The waste water is then sprayed into the dust removal box 24 through the water outlet pipe 2513 and the spray nozzle 2514 to spray the incoming smoke and dust, thereby realizing the reuse of waste water, saving precious water resources and reducing production costs. The water storage tank 2512 is provided with a water inlet, which can replenish the spray liquid in time at the water inlet, and the gas after the dust reduction treatment is discharged from the gas outlet 22.

[0032] As a preferred embodiment of the utility model, it may also have the following additional technical features: the water outlet pipe 2513 is arranged in a spiral shape, and each spray nozzle 2514 is evenly and equidistantly arranged on the water outlet pipe 2513, which can effectively improve the spray coverage area and uniformity. Since the water outlet pipe 2513 is spiral, it can be arranged along a specific path or space, so that the spray nozzle 2514 can cover a wider area. The spray nozzles 2514 are evenly and equidistantly arranged on the water outlet pipe 2513, ensuring that the wastewater or liquid can be evenly sprayed to the place that needs to be treated, avoiding the situation where there is too much or too little liquid in certain areas, and improving the uniformity and efficiency of the spray. At the same time, the spiral water outlet pipe 2513 design can improve the flow state of the fluid, reduce the turbulence and resistance of the fluid, and improve the spraying effect. When the fluid flows in the spiral tube, due to the guiding effect of the tube wall, it can flow more smoothly, which helps to maintain a stable spray pressure and flow rate.

[0033] As a preferred embodiment of the utility model, it may also have the following additional technical features: the filter assembly 252 includes a coarse metal grid 2521 and a fine metal grid 2522, and the coarse metal grid 2521 and the fine metal grid 2522 are arranged in sequence from top to bottom below the dust inlet 241, and the combination of the coarse metal grid 2521 and the fine metal grid 2522 achieves the effect of graded filtration. The coarse metal grid 2521 mainly intercepts large particles of smoke and impurities, while the fine metal grid 2522 further filters out smaller particles. Since the size and density of particles in the smoke may be different, by arranging the coarse metal grid 2521 and the fine metal grid 2522 in sequence from top to bottom, it can be ensured that after the smoke passes through the dust inlet 241, it is first sprayed and then preliminarily filtered by the coarse metal grid 2521, and then finely filtered by the fine metal grid 2522.

[0034] As a preferred embodiment of the utility model, it may also have the following additional technical features: the bottom of the filter box 32 is gradually reduced from top to bottom to form a cone, and the drain outlet 21 is arranged at the bottom of the cone, so that the wastewater can flow smoothly to the bottom, and thus be concentrated at the drain outlet 21 for discharge, avoiding the wastewater from being dispersed or retained inside the filter box 32, ensuring that the wastewater can be discharged efficiently and quickly, and improving the efficiency of wastewater treatment.

[0035] As a preferred embodiment of the utility model, it may also have the following additional technical features: the filtering structure 33 includes a first filter part 331 and a second filter part 332, the first filter part 331 and the second filter part 332 are connected, the water suction pipe 31 is connected to the first filter part 331, and the drain pipe 35 is connected to an end of the second filter part 332 away from the first filter part 331. Through the combined use of the first filter part 331 and the second filter part 332, the waste liquid can be filtered twice, thereby effectively removing impurities and particulate matter therein. This double filtering mechanism greatly improves the cleanliness of the waste liquid.

[0036] As a preferred embodiment of the utility model, it may also have the following additional technical features: the first filter part 331 includes a first shell 3311, a first filter layer 3312, a second filter layer 3313 and a partition 3314, the first filter layer 3312, the second filter layer 3313 and the partition 3314 are all arranged in the first shell 3311, the first shell 3311 as the main structure of the first filter part 331, can protect the internal filter layer and the partition 3314, and prevent them from being damaged, the partition 3314 is arranged between the first filter layer 3312 and the second filter layer 3313, the first filter layer 3312 is arranged on the side close to the water suction pipe 31, the first shell 3311 is connected to the second filter part 332, the first filter layer 3312, the second filter layer 3313 and the partition 3314 are connected to ... The design realizes graded filtration of wastewater. By setting the first filter layer 3312 on the side close to the suction pipe 31, the wastewater first passes through the first filter layer 3312 for preliminary filtration to remove most of the impurities. Then, after being blocked and refined by the partition 3314, the wastewater enters the second filter layer 3313 for deep filtration. The first filter layer 3312 is mainly used to remove large particles of impurities in the wastewater, and the partition 3314 plays a role of blocking and further refining the filtration to ensure that larger particles do not enter the second filter layer 3313. The second filter layer 3313 filters smaller particles. This graded filtration mechanism effectively improves the filtration effect of the wastewater and makes it cleaner. In this embodiment, the first filter layer 3312 is set as a cotton cloth layer, and the second filter layer is set as an activated carbon layer.

[0037] As a preferred embodiment of the utility model, it may also have the following additional technical features: the second filter part 332 includes a second shell 3321 and a ceramic filter element 3322, the ceramic filter element 3322 is arranged in the second shell 3321, the second shell 3321 is connected to the first filter part 331, the drain pipe 35 is connected to the end of the second shell 3321 away from the first filter part 331, the ceramic filter element 3322 can achieve deep filtration of the waste liquid, and can capture and remove tiny particles, harmful substances and heavy metal ions that have not been filtered out in the previous stage, thereby further improving the cleanliness and purity of the waste water.

[0038] The working process of the dust removal heating furnace of this embodiment is as follows: when the heating furnace body 1 is started to start the heating process, a large amount of smoke and exhaust gas will be generated, and these smoke and exhaust gas will be discharged through the dust suction port set on the heating furnace body 1. Under the action of the suction pump 26, the smoke and exhaust gas will be sucked into the dust inlet 241 of the dust removal box 24 through the dust suction pipe 23, and the spray liquid will be injected into the water storage tank 2512. After passing through the water storage tank 2512 and the water outlet pipe 2513, it will finally be evenly sprayed on the smoke and exhaust gas through each spray nozzle 2514. The settled smoke particles and waste water will fall into the bottom of the dust removal box 24 together, and will be filtered by the coarse metal mesh frame 2521 and the fine metal mesh frame 2522. Part of the particles are intercepted, and the waste gas after dust removal is discharged from the top air outlet 22 of the dust removal box 24. The waste water at the bottom of the dust removal box 24 is discharged through the drain port 21 and enters the filter box 32 of the purification device 3. The waste water first enters the first filter part 331, and is filtered by the first filter layer 3312 and the second filter layer 3313. The filtered waste water enters the second filter part 332 and is deeply filtered by the ceramic filter element 3322 to remove tiny particles and harmful substances. The purified waste water returns to the water storage tank 2512 through the drain pipe 35, and the spray component 251 extracts waste water from the drain pipe 35 through the second water suction pump 2511 to realize the recycling of waste water.

[0039] The dust removal heating furnace of this embodiment has a reasonable structural design and is easy to use. This structure can also be used for other equipment with similar usage requirements. In this embodiment, the dust removal heating furnace can realize the reuse of wastewater while effectively protecting the environment.

[0040] In the description of the above embodiments, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, "several" and "multiple" mean more than one, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" and "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0041] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction between the combinations of these technical features, they should be considered to be within the scope recorded in this specification.

[0042] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A dust removal heating furnace, characterized in that: include: A heating furnace body, wherein the heating furnace body is provided with a dust suction port; A dust removal device, the dust removal device is connected to the dust suction port, a drain port is provided at the bottom of the dust removal device, and an air outlet is provided at the top of the dust removal device; A purification device, wherein the purification device is connected to the bottom of the dust removal device, the purification device comprises a water suction pipe, a filter box and a filter structure, one end of the water suction pipe is connected to the drain port, and the end of the water suction pipe away from the dust removal device is connected to the filter box, a first water suction pump is arranged on the water suction pipe, the filter structure is arranged in the filter box, and a drain pipe is arranged at one end of the filter box away from the water suction pipe, and the drain pipe is connected to the dust removal device.

2. The dust removal heating furnace according to claim 1, characterized in that: The dust removal device includes a dust suction pipe, a dust removal box and a dust removal structure. The dust removal box is provided with a dust inlet, one end of the dust suction pipe is connected to the dust suction port, and the end of the dust suction pipe away from the dust suction port is connected to the dust inlet, an air suction pump is provided on the dust suction pipe, the dust removal structure is arranged in the dust removal box, the drain port is arranged at the bottom of the dust removal box, the air outlet is arranged at the top of the dust removal box, and the dust removal structure is connected to the drain pipe.

3. The dust removal heating furnace according to claim 2, characterized in that: The dust removal structure comprises a spray assembly and a filter assembly, wherein the spray assembly is arranged above the dust inlet, the filter assembly is arranged below the dust inlet, and the spray assembly is communicated with the drain pipe.

4. The dust removal heating furnace according to claim 3, characterized in that: The spray assembly includes a second water suction pump, a water storage tank, a water outlet pipe and a plurality of spray nozzles. The water storage tank is connected to the drain pipe, the water outlet pipe is connected to the water storage tank, the second water suction pump is arranged on the drain pipe, each spray nozzle is arranged on the water outlet pipe, and the water storage tank is provided with a water inlet.

5. The dust removal heating furnace according to claim 4, characterized in that: The water outlet pipe is arranged in a spiral shape, and the spray nozzles are evenly and equidistantly arranged on the water outlet pipe.

6. The dust removal heating furnace according to claim 3, characterized in that: The filter assembly comprises a coarse metal grid and a fine metal grid, and the coarse metal grid and the fine metal grid are arranged below the dust inlet in sequence from top to bottom.

7. The dust removal heating furnace according to claim 2, characterized in that: The bottom of the filter box body is gradually reduced from top to bottom to form a cone, and the drain port is arranged at the bottom of the cone.

8. The dust removal heating furnace according to claim 1, characterized in that: The filter structure includes a first filter part and a second filter part, the first filter part and the second filter part are connected, the water suction pipe is connected to the first filter part, and the drainage pipe is connected to an end of the second filter part away from the first filter part.

9. The dust removal heating furnace according to claim 8, characterized in that: The first filter part includes a first outer shell, a first filter layer, a second filter layer and a partition screen. The first filter layer, the second filter layer and the partition screen are all arranged in the first outer shell. The partition screen is arranged between the first filter layer and the second filter layer. The first filter layer is arranged on a side close to the water suction pipe. The first outer shell is connected to the second filter part.

10. The dust removal heating furnace according to claim 8, characterized in that: The second filter part includes a second shell and a ceramic filter element. The ceramic filter element is arranged in the second shell. The second shell is communicated with the first filter part. The drain pipe is communicated with an end of the second shell away from the first filter part.

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