Polishing powder airflow uniform temperature efficient calcining furnace

Abstract

The application relates to the technical field of calcining furnaces, and discloses a high-efficiency calcining furnace with airflow uniform temperature for polishing powder, which comprises a calcining furnace body, a preheating furnace body located at the front end of the calcining furnace body, and a cooling furnace body located at the rear end of the calcining furnace body, one end of the preheating furnace body, the calcining furnace body and the cooling furnace body is rotationally connected with a furnace door through a swing arm, a rotary assembly is embeddedly installed on the outer side of each furnace door, and an arc-shaped sliding frame is slidingly installed on the upper end of a supporting frame. The high-temperature waste gas generated in the calcining furnace body can be sucked into the preheating furnace body by a fan, another charging barrel filled with polishing powder in the preheating furnace body is preheated, the subsequent calcining time is greatly shortened, the calcining efficiency is improved, and energy is saved; the low-temperature gas after preheating can be sucked into the cooling furnace body by another fan, the charging barrel filled with polishing powder in the cooling furnace body is heat-insulated and cooled, the cooling rate is controlled, and the quality of the polishing powder is improved.

Description

Technical Field

[0001] This application relates to the field of calcining furnace technology, specifically a high-efficiency calcining furnace for uniform airflow of polishing powder. Background Technology

[0002] Polishing powder is a crucial industrial precision machining material. Its core purpose is to achieve extremely high flatness, smoothness, and finish on workpiece surfaces through micron- or even nano-level cutting and chemical action. Its applications are extremely wide, covering almost all advanced manufacturing fields with stringent surface quality requirements. During the production process of polishing powder, high-temperature calcination is required to remove organic matter and volatile impurities (such as moisture and organic matter) from the raw materials. At the same time, it decomposes components such as carbonates to generate oxides and improves the physical properties of the material (such as increasing density, strength, and porosity) to meet the requirements of subsequent processing or use. This requires the use of a calcination furnace.

[0003] Chinese patent application CN211147325U discloses a gas-fired calcining furnace. This patented technology includes a gas pipe, a furnace body connected to the gas pipe, and a transmission device. The furnace body comprises an outer shell, within which a combustion chamber is formed, a combustion cavity communicating with the combustion chamber, and a furnace cylinder connected to the transmission device and located within the combustion cavity. The transmission device drives the furnace cylinder to rotate within the combustion cavity. Multiple heating nozzles are evenly arranged on the outer shell, located within the combustion cavity and connected to the gas pipe. A ventilation and exhaust device is provided at the top of the furnace body. The furnace cylinder has ventilation holes communicating with the combustion cavity. This technology achieves the effect of uniform heating during calcination, improving the calcination quality of raw materials. It solves the problem of uneven heating of raw materials, which reduces the quality of calcined materials. However, it does not reuse energy, resulting in excessively long calcination times; and it requires separate cooling equipment, leading to low working efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency calcining furnace for uniform airflow of polishing powder, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high-efficiency calcining furnace for uniform airflow of polishing powder includes a calcining furnace body, a preheating furnace body located at the front end of the calcining furnace body, and a cooling furnace body located at the rear end of the calcining furnace body. Each of the preheating furnace body, calcining furnace body, and cooling furnace body has a furnace door rotatably connected to one end via a swing arm. A rotating component is embedded on the outer side of each furnace door, and a support frame is fixedly connected to the inner side of each furnace door. An arc-shaped sliding frame is slidably installed on the upper end of the support frame, and a loading hopper is provided on the inner side of the arc-shaped sliding frame. A connecting pipe is connected to the rear side of the upper end of the preheating furnace body, and a fan is installed on the front side of the upper end of the preheating furnace body. A connecting pipe is connected to one side of the upper end of the calcining furnace body, and a fan is installed on one side of the upper end of the cooling furnace body. A bent connecting pipe connects the fan and the connecting pipe, and a bent connecting pipe connects the fan and the connecting pipe.

[0007] As a further embodiment of this utility model: a lead screw is rotatably connected to the front side of one end of each of the preheating furnace body, calcining furnace body and cooling furnace body, and a handwheel is engaged with the lead screw. A buckle is provided at the front end of each furnace door, and a handle is fixedly connected to one end of each furnace door near the buckle.

[0008] As a further embodiment of this utility model: an igniter is embedded in the middle of the upper end of the calcining furnace body, and a gas inlet is embedded in the upper end of the calcining furnace body near the rear side of the igniter, and a combustion aid inlet is embedded in the upper end of the calcining furnace body near the front side of the igniter.

[0009] As a further embodiment of this utility model: the rotating component includes a motor, the output end of the motor is fixedly connected to an electric cylinder, the output end of the electric cylinder is fixedly connected to a rotating shaft, and one end of the rotating shaft is fixedly connected to a clamp.

[0010] As a further embodiment of this utility model: the arc-shaped sliding frame includes an arc-shaped frame, a set of sliders is fixedly connected to the lower end of the outer side of the arc-shaped frame, and a set of arc-shaped limiting grooves are provided on the inner side of the arc-shaped frame.

[0011] As a further improvement of this utility model: a set of limiting rings matching the arc-shaped limiting groove are fixedly connected to the outer side of the filling barrel, and the limiting rings are slidably connected to the arc-shaped limiting groove.

[0012] As a further improvement of this utility model: a set of guide rail grooves matching the slider are provided on the inner side of the upper end of the support frame, and the slider is slidably connected in the guide rail grooves.

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

[0014] This invention utilizes a blower, a connecting pipe, and a bent connecting pipe to draw high-temperature exhaust gas generated in the calcining furnace into a preheating furnace. This preheats another charging hopper containing polishing powder within the preheating furnace, significantly shortening the subsequent calcination time, improving calcination efficiency, and saving energy. Furthermore, the blower, connecting pipe, and bent connecting pipe can draw the preheated low-temperature gas into a cooling furnace to insulate and cool the charging hopper containing polishing powder within the cooling furnace, controlling the cooling rate and thus improving the quality of the polishing powder.

[0015] The rotating component can drive the charging bucket to rotate, so that the charging bucket will continuously rotate during the calcination process in the calcination furnace, which ensures the uniformity of airflow and temperature and guarantees the calcination quality.

[0016] When the furnace doors on the preheating furnace, calcining furnace, or cooling furnace are opened, so that two adjacent furnace doors are in contact and aligned, and the rotating component is disengaged from the loading hopper, an external tool is used to move the slider on the arc-shaped sliding frame along the support frame, moving the arc-shaped sliding frame and the loading hopper from one furnace door to another. This allows the polishing powder in the loading hopper to be preheated, calcined, and cooled sequentially, ensuring continuous operation, reducing energy consumption, and improving the quality of the polishing powder. Attached Figure Description

[0017] Figure 1 A schematic diagram of a high-efficiency calcining furnace for uniform airflow of polishing powder.

[0018] Figure 2 This is a schematic diagram of the structure of the calcining furnace body in a high-efficiency calcining furnace for uniform airflow of polishing powder.

[0019] Figure 3 This is a schematic diagram of the furnace door in a high-efficiency calcining furnace for uniform airflow of polishing powder.

[0020] Figure 4 This is a schematic diagram of the exploded structure of the furnace door in a high-efficiency calcining furnace for uniform airflow of polishing powder.

[0021] Figure 5 for Figure 1 A magnified structural diagram of part A in the middle;

[0022] Figure 6 This is a schematic diagram of the structure of a rotating component in a high-efficiency calcining furnace for uniform airflow of polishing powder.

[0023] Figure 7 This is a schematic diagram of the arc-shaped sliding frame in a high-efficiency calcining furnace for uniform airflow of polishing powder.

[0024] In the diagram: 1. Preheating furnace body; 2. Connecting pipe one; 3. Fan one; 4. Bend connecting pipe one; 5. Calcination furnace body; 6. Bend connecting pipe two; 7. Fan two; 8. Cooling furnace body; 9. Furnace door; 10. Swing arm; 11. Handle; 12. Buckle; 13. Lead screw; 14. Handwheel; 15. Connecting pipe two; 16. Gas inlet; 17. Ignition device; 18. Combustion aid inlet; 19. Support frame; 20. Charging hopper; 21. Rotating assembly; 211. Motor; 212. Electric cylinder; 213. Rotating shaft; 214. Clamp; 22. Guide rail groove; 23. Arc-shaped sliding frame; 231. Arc-shaped frame; 232. Slider; 233. Arc-shaped limiting groove; 24. Limiting ring. Detailed Implementation

[0025] Please see Figures 1-7 In this embodiment of the present invention, a high-efficiency calcining furnace for uniform airflow of polishing powder includes a calcining furnace body 5, a preheating furnace body 1 located at the front end of the calcining furnace body 5, and a cooling furnace body 8 located at the rear end of the calcining furnace body 5. One end of each of the preheating furnace body 1, the calcining furnace body 5, and the cooling furnace body 8 is rotatably connected to a furnace door 9 via a swing arm 10. A rotating assembly 21 is embedded on the outer side of each furnace door 9, and a support frame 19 is fixedly connected to the inner side of each furnace door 9. An arc-shaped sliding frame 23 is slidably mounted on the upper end of the support frame 19, and a loading hopper 20 is provided on the inner side of the arc-shaped sliding frame 23. Figure 5 As shown, a lead screw 13 is rotatably connected to the front side of one end of the preheating furnace body 1, the calcining furnace body 5, and the cooling furnace body 8. A handwheel 14 is engaged with the lead screw 13. A buckle 12 is provided at the front end of each furnace door 9, and a handle 11 is fixedly connected to one end of each furnace door 9 near the buckle 12. The polishing powder to be calcined is placed into the loading bucket 20, and the loading bucket 20 is placed on the arc-shaped sliding frame 23. Then, the handle 11 is grasped by hand, and the furnace is pulled. The furnace door 9 rotates at the swing arm 10, closing onto the preheating furnace body 1, calcining furnace body 5, or cooling furnace body 8, while simultaneously allowing the charging bucket 20 to enter the preheating furnace body 1, calcining furnace body 5, or cooling furnace body 8. Then, rotating the screw 13 engages the inner side of the latch 12, and turning the handwheel 14 clockwise locks the furnace door 9 tightly onto the preheating furnace body 1, calcining furnace body 5, or cooling furnace body 8, forming a sealed space. Figure 2As shown, an igniter 17 is embedded in the middle of the upper end of the calcining furnace body 5, and a gas inlet 16 is embedded in the upper end of the calcining furnace body 5 near the rear side of the igniter 17. An auxiliary combustion agent inlet 18 is embedded in the upper end of the calcining furnace body 5 near the front side of the igniter 17. Combustible gas, such as natural gas, is introduced into the interior of the calcining furnace body 5 through the gas inlet 16; and an auxiliary combustion agent, such as oxygen, is introduced into the interior of the calcining furnace body 5 through the auxiliary combustion agent inlet 18. After the combustible gas and the auxiliary combustion agent are mixed in the calcining furnace body 5, the combustible gas is ignited by the igniter 17. After the combustible gas burns, it releases a large amount of heat, which calcines the polishing powder in the charging bucket 20. The calcination temperature is, for example, 800-1300℃.

[0026] exist Figure 1 and Figure 2 In the preheating furnace body 1, a connecting pipe 2 is connected to the rear side of the upper end, and a fan 3 is installed on the front side of the upper end of the preheating furnace body 1. A connecting pipe 15 is connected to one side of the upper end of the calcining furnace body 5, and a fan 7 is installed on one side of the upper end of the cooling furnace body 8. A bent connecting pipe 6 connects the fan 7 and the connecting pipe 2, and a bent connecting pipe 4 connects the fan 3 and the connecting pipe 15. When a charging bucket 20 containing polishing powder is calcined in the calcining furnace body 5, high-temperature exhaust gas is generated. At this time, a negative pressure is generated by the fan 3, which draws the high-temperature exhaust gas in the calcining furnace body 5 through the connecting pipe 15 and the bent connecting pipe 4 in sequence, and then into the preheating furnace body 1. Another charging bucket 20 containing polishing powder inside body 1 is preheated, for example, to 300-450℃; this greatly shortens the subsequent calcination time, improves calcination efficiency, and saves energy; while the charging bucket 20 containing polishing powder after calcination is placed into the cooling furnace body 8 for cooling; at this time, negative pressure is generated by fan 2 7, and the low-temperature exhaust gas preheated in the preheating furnace body 1 is sequentially drawn into the cooling furnace body 8 through connecting pipe 1 2 and bent connecting pipe 2 6, and then kept warm and cooled in the cooling furnace body 8, for example, at 200-300℃, and the cooling rate is controlled, thereby improving the quality of polishing powder.

[0027] exist Figure 4 and Figure 6In the process, the rotating component 21 includes a motor 211, an electric cylinder 212 fixedly connected to the output end of the motor 211, a rotating shaft 213 fixedly connected to the output end of the electric cylinder 212, a clamp 214 fixedly connected to one end of the rotating shaft 213, and a groove matching the clamp 214 opened at one end of the loading barrel 20. The motor 211 drives the electric cylinder 212, the rotating shaft 213 and the clamp 214 to rotate slowly, and the electric cylinder 212 drives the rotating shaft 213 and the clamp 214 to extend slowly, so that the clamp 214 can be inserted into the groove at one end of the loading barrel 20. Then, the motor 211 drives the loading barrel 20 to rotate, so that the loading barrel 20 continuously rotates during the calcination process in the calcination furnace body 5, ensuring the uniformity of airflow and temperature, and ensuring the calcination quality.

[0028] exist Figure 3 , Figure 4 and Figure 7 In the process, the arc-shaped sliding frame 23 includes an arc-shaped frame 231. A set of sliders 232 are fixedly connected to the lower outer end of the arc-shaped frame 231, and an arc-shaped limiting groove 233 is provided on the inner side of the arc-shaped frame 231. A set of limiting rings 24 matching the arc-shaped limiting grooves 233 are fixedly connected to the outer side of the loading barrel 20. The limiting rings 24 are slidably connected to the arc-shaped limiting grooves 233. The loading barrel 20 is limited by the limiting rings 24 and the arc-shaped limiting grooves 233. When the rotating component 21 drives the loading barrel 20 to rotate, it ensures that the loading barrel 20 can rotate stably within the arc-shaped frame 231 without sliding. A set of sliders 232 matching the sliders 232 is provided on the inner side of the upper end of the support frame 19. The matching guide rail groove 22 and the slider 232 are slidably connected in the guide rail groove 22. When the furnace door 9 on the preheating furnace body 1, calcining furnace body 5 or cooling furnace body 8 is opened, the two adjacent furnace doors 9 are brought into contact and aligned; and the rotating component 21 is disengaged from the loading bucket 20. At this time, an external tool, such as a stick, is used to push the arc-shaped sliding frame 23, so that the slider 232 on the arc-shaped sliding frame 23 slides along the support frame 19, moving the arc-shaped sliding frame 23 and the loading bucket 20 from one furnace door 9 to another furnace door 9. This allows the polishing powder in the loading bucket 20 to be preheated, calcined and cooled in sequence, ensuring the continuity of work, reducing energy consumption and improving the quality of polishing powder.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency calcining furnace for uniform airflow of polishing powder, comprising a calcining furnace body (5), a preheating furnace body (1) located at the front end of the calcining furnace body (5), and a cooling furnace body (8) located at the rear end of the calcining furnace body (5), characterized in that, One end of each of the preheating furnace body (1), calcining furnace body (5), and cooling furnace body (8) is rotatably connected to a furnace door (9) via a swing arm (10). A rotating assembly (21) is embedded on the outer side of each furnace door (9), and a support frame (19) is fixedly connected to the inner side of each furnace door (9). An arc-shaped sliding frame (23) is slidably mounted on the upper end of the support frame (19), and a loading hopper (20) is provided on the inner side of the arc-shaped sliding frame (23). The preheating furnace body (1) is connected to the rear side of the upper end by a connecting pipe 1 (2), and a fan 1 (3) is installed on the front side of the upper end of the preheating furnace body (1). The calcining furnace body (5) is connected to one side of the upper end by a connecting pipe 2 (15). The cooling furnace body (8) is connected to one side of the upper end by a fan 2 (7). The fan 2 (7) and the connecting pipe 1 (2) are connected by a bent connecting pipe 2 (6). The fan 1 (3) and the connecting pipe 2 (15) are connected by a bent connecting pipe 1 (4).

2. The high-efficiency calcining furnace for uniform airflow of polishing powder according to claim 1, characterized in that, The front side of one end of the preheating furnace body (1), calcining furnace body (5) and cooling furnace body (8) is rotatably connected to a screw (13), and a handwheel (14) is engaged on the screw (13). Each furnace door (9) is provided with a buckle (12) at the front end, and a handle (11) is fixedly connected to one end of each furnace door (9) near the buckle (12).

3. The high-efficiency calcining furnace for uniform airflow of polishing powder according to claim 1, characterized in that, An igniter (17) is embedded in the middle of the upper end of the calcining furnace body (5), and a gas inlet (16) is embedded in the upper end of the calcining furnace body (5) near the rear side of the igniter (17). An auxiliary combustion agent inlet (18) is embedded in the upper end of the calcining furnace body (5) near the front side of the igniter (17).

4. The high-efficiency calcining furnace for uniform airflow of polishing powder according to claim 1, characterized in that, The rotating assembly (21) includes a motor (211), the output end of which is fixedly connected to an electric cylinder (212), the output end of which is fixedly connected to a rotating shaft (213), and one end of the rotating shaft (213) is fixedly connected to a chuck (214).

5. The high-efficiency calcining furnace for uniform airflow of polishing powder according to claim 1, characterized in that, The arc-shaped sliding frame (23) includes an arc-shaped frame (231), a set of sliders (232) are fixedly connected to the lower end of the outer side of the arc-shaped frame (231), and an arc-shaped limiting groove (233) is opened on the inner side of the arc-shaped frame (231).

6. The high-efficiency calcining furnace for uniform airflow of polishing powder according to claim 5, characterized in that, A set of limiting rings (24) that match the arc-shaped limiting groove (233) are fixedly connected to the outside of the filling barrel (20), and the limiting rings (24) are slidably connected to the arc-shaped limiting groove (233).

7. The high-efficiency calcining furnace for uniform airflow of polishing powder according to claim 5, characterized in that, The upper inner side of the support frame (19) is provided with a set of guide rail grooves (22) that match the slider (232), and the slider (232) is slidably connected in the guide rail grooves (22).

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