Dry particle spheroidizing furnace

Abstract

The utility model relates to a dry particle spheroidizing furnace, and belongs to the technical field of dry particle spheroidizing equipment. According to the utility model, through the arrangement of the dry particle powder hopper, the particle blowing air pipe and the collecting pipe, not only can rapid feeding be realized, but also dry particle powder can be screened; the discharging pipe, the cooling air pipe, the fire nozzle, the particle blowing air pipe and the smoke exhaust pipe are sequentially arranged on the furnace body from bottom to top, so that dry particles entering the furnace body are firstly heated until the surfaces are molten in the falling process, and then are cooled and shaped by cold air input by the cooling air pipe to form pearl-shaped particles; according to the utility model, the cooling air pipe is arranged below the fire nozzle, so that cold air blown in through the cooling air pipe can maintain the pressure in the furnace body, and smoke generated by combustion can be prevented from escaping from the discharge pipe of the furnace body.

Description

Technical Field

[0001] The utility model relates to the technical field of dry particle spheroidization equipment, in particular to a dry particle spheroidization furnace. Background Art

[0002] Currently, dry granules are typically produced by crushing. However, these granules are of varying sizes and irregular shapes, with burrs and sharp corners. Directly applying these granules to glaze production can result in poor dispersion and glaze sedimentation. This can lead to accumulation of dry granules after the glaze is applied to the ceramic tile surface, resulting in an uneven glaze surface with pits and dents, affecting the glaze's feel and anti-fouling properties.

[0003] Therefore, it is usually necessary to use a spherical granulation device to further process the dry particles to round the edges and corners of the dry particles to form pearl-like particles. However, the structural design of existing spherical granulation devices (such as powder spheroidization furnaces) is unreasonable and feeding is inconvenient. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a dry particle spheroidizing furnace, which can achieve rapid feeding and screening of dry particle powder by arranging a dry particle powder hopper, a particle blowing duct and a collecting pipe.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A dry particle spheroidization furnace comprises a furnace body, which is provided with a discharge pipe, a cooling air duct, a burner, a feeding mechanism and a smoke exhaust pipe in sequence from bottom to top; the feeding mechanism comprises a dry particle powder hopper, a particle blowing air duct and a collecting pipe; the bottom discharge port of the dry particle powder hopper is connected to the particle blowing air duct; the particle blowing air duct comprises a horizontal pipe section and an inclined pipe section, one end of the inclined pipe section is connected to the horizontal pipe section, and the other end of the inclined pipe section is connected to the furnace body, the inclined pipe section gradually tilts upward from an end away from the furnace body to an end close to the furnace body, and the bottom discharge port of the dry particle powder hopper is connected to the inclined pipe section; the collecting pipe is arranged on the lower side of one end of the horizontal pipe section close to the inclined pipe section.

[0007] Preferably, the collecting pipe is provided with a collecting valve.

[0008] Preferably, one end of the horizontal pipe section away from the inclined pipe section is connected to a particle blowing fan, and the horizontal pipe section is provided with a particle blowing air valve, and the particle blowing air valve is located between the collecting pipe and the particle blowing fan.

[0009] Preferably, the bottom discharge port of the dry granular powder hopper is provided with a hopper valve.

[0010] Preferably, the furnace body includes a thermal insulation brick layer, a thermal insulation cotton layer and a metal layer which are sequentially arranged from the inside to the outside.

[0011] Preferably, the lower portion of the furnace body is funnel-shaped, the discharge pipe is arranged at the bottom of the furnace body, and a discharge valve is provided on the discharge pipe.

[0012] Preferably, the upper portion of the furnace body is in an inverted funnel shape, the smoke exhaust pipe is arranged on the top of the furnace body, a smoke exhaust valve is provided on the smoke exhaust pipe, and a smoke exhaust fan is connected to one end of the smoke exhaust pipe away from the furnace body.

[0013] Preferably, the smoke exhaust pipe is connected with a regulating air duct between the smoke exhaust valve and the furnace body, and the regulating air duct is provided with a regulating air valve.

[0014] Preferably, the burner is provided with a gas interface and a combustion-supporting gas interface, the gas interface is connected to the gas pipe, the combustion-supporting gas interface is connected to the combustion-supporting gas pipe, the gas pipe is provided with a gas valve, and the combustion-supporting gas pipe is provided with a combustion-supporting gas valve.

[0015] Preferably, the number of the burners is not less than three.

[0016] Preferably, the furnace body is provided with at least two rows of burner groups at equal intervals along its height direction, and each row of burner groups includes at least two burners distributed at equal intervals along the circumference of the furnace body. In any two adjacent rows of burner groups, the burners in one row of burner groups are arranged alternately with the burners in the other row of burner groups.

[0017] Preferably, the number of the cooling air ducts is not less than three.

[0018] Preferably, the furnace body is provided with at least two rows of cooling air duct groups at equal intervals along its height direction, and each row of cooling air duct groups includes at least two cooling air ducts distributed along the circumference of the furnace body. In any two adjacent rows of cooling air duct groups, the cooling air ducts in one row of cooling air duct groups are staggered with the cooling air ducts in the other row of cooling air duct groups.

[0019] Preferably, a cooling air valve is provided on the cooling air duct.

[0020] Preferably, the dry pelletizing furnace further comprises a temperature probe device, and the number of the temperature probe devices is not less than two, wherein at least one temperature probe device is arranged in the furnace body, and at least one temperature probe device is arranged in the exhaust pipe.

[0021] Preferably, the dry pelletizing furnace further comprises a frame support structure, and the frame support structure is arranged outside the furnace body.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] The utility model can realize fast feeding and screening of dry granular powder by arranging a dry granular powder hopper, a granular blowing air duct and a collecting pipe;

[0024] The utility model arranges a discharge pipe, a cooling air pipe, a burner, a particle blowing air pipe and a smoke exhaust pipe in order from bottom to top in the furnace body, so that the dry particles entering the furnace body are first heated to melt the surface during the falling process, and then cooled and shaped by the cold air input by the cooling air pipe to form pearl-shaped particles;

[0025] The utility model arranges the cooling air duct below the burner, so that the cold air blown in through the cooling air duct can maintain the pressure in the furnace body and prevent the smoke generated by combustion from escaping from the discharge pipe of the furnace body. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the dry pelletizing furnace provided by the utility model;

[0027] Figure 2 A schematic structural diagram of the feeding mechanism provided by the utility model;

[0028] Figure 3 for Figure 1 Enlarged view of part A.

[0029] In the figure, 1-furnace body, 2-discharge pipe, 3-cooling air duct, 4-burner, 5-exhaust pipe, 6-particle blowing air duct, 7-dry particle powder hopper, 8-collecting pipe, 9-horizontal pipe section, 10-inclined pipe section, 11-hopper valve, 12-particle blowing air valve, 13-collecting valve, 14-discharge valve, 15-exhaust valve, 16-regulating air duct, 17-regulating air valve, 18-temperature detection device, 19-cooling air valve, 20-insulation brick layer, 21-insulation cotton layer, 22-metal layer. DETAILED DESCRIPTION

[0030] In order to better illustrate the purpose, technical solutions and advantages of the present invention, the present invention will be further described below in conjunction with specific embodiments.

[0031] See also Figures 1-2The utility model provides a dry particle spheroidizing furnace, including a furnace body 1, which is provided with a discharge pipe 2, a cooling air duct 3, a burner 4, a feeding mechanism and a smoke exhaust pipe 5 from bottom to top. The feeding mechanism includes a dry particle powder hopper 7, a particle blowing air duct 6 and a collecting pipe 8. The bottom discharge port of the dry particle powder hopper 7 is connected to the particle blowing air duct 6; the particle blowing air duct 6 includes a horizontal pipe section 9 and an inclined pipe section 10, one end of the inclined pipe section 10 is connected to the horizontal pipe section 9, and the other end of the inclined pipe section 10 is connected to the furnace body 1, and the inclined pipe section 10 gradually inclines upward from the end away from the furnace body 1 to the end close to the furnace body 1, and the bottom discharge port of the dry particle powder hopper 7 is connected to the inclined pipe section 10; the collecting pipe 8 is arranged on the lower side of the end of the horizontal pipe section 9 close to the inclined pipe section 10.

[0032] The utility model is provided with a dry granular powder hopper 7, a granular blowing air duct 6 and a collecting pipe 8, which can not only realize rapid feeding but also screen the dry granular powder; the utility model is provided with a discharge pipe 2, a cooling air duct 3, a burner 4, a granular blowing air duct 6 and a smoke exhaust pipe 5 in sequence from bottom to top on the furnace body 1, so that the dry granules entering the furnace body 1 are first heated to melt on the surface during the falling process, and then cooled and shaped by the cold air input by the cooling air duct 3 to form pearl-shaped granules.

[0033] The utility model arranges the cooling air duct 3 below the burner 4 so that the cold air blown in through the cooling air duct 3 can maintain the pressure in the furnace body 1 and prevent the smoke generated by combustion from escaping from the discharge pipe 2 of the furnace body 1.

[0034] In one embodiment, a hopper valve 11 is provided at the bottom discharge port of the dry granular powder hopper 7 .

[0035] In one embodiment, the collecting pipe 8 is provided with a collecting valve.

[0036] In one embodiment, one end of the horizontal pipe section 9 away from the inclined pipe section 10 is connected to a particle blowing fan, and the horizontal pipe section 9 is provided with a particle blowing air valve 12, which is located between the collecting pipe 8 and the particle blowing fan.

[0037] In one embodiment, the lower portion of the furnace body 1 is funnel-shaped, the discharge pipe 2 is disposed at the bottom of the furnace body 1 , and a discharge valve 14 is provided on the discharge pipe 2 .

[0038] In one embodiment, the upper part of the furnace body 1 is in an inverted funnel shape, the smoke exhaust pipe 5 is arranged on the top of the furnace body 1, a smoke exhaust valve 15 is provided on the smoke exhaust pipe 5, and the end of the smoke exhaust pipe 5 away from the furnace body 1 is connected to a smoke exhaust fan (not shown in the figure).

[0039] In one embodiment, the smoke exhaust pipe 5 is connected to a regulating air duct 16 between the smoke exhaust valve 15 and the furnace body 1. The regulating air duct 16 is provided with a regulating air damper 17. Because high-temperature smoke easily corrodes the smoke exhaust pipe 5 and also causes significant damage to the smoke exhaust fan, during the smoke exhaust process, the opening of the regulating air damper 17 can be adjusted to allow cool air to enter the smoke exhaust pipe 5, effectively lowering the temperature within the smoke exhaust pipe 5.

[0040] During use, the outflow rate of the smoke and the air pressure in the furnace body 1 can be adjusted by adjusting the opening of the smoke exhaust valve 15 and the speed of the smoke exhaust fan.

[0041] In one embodiment, the burner 4 is provided with a gas interface and a combustion-supporting gas interface, the gas interface is connected to the gas pipe, the combustion-supporting gas interface is connected to the combustion-supporting gas pipe, a gas valve is provided on the gas pipe, and the combustion-supporting gas pipe is provided with a combustion-supporting gas valve.

[0042] In one embodiment, the number of the burners 4 is no less than three.

[0043] Specifically, the furnace body 1 is provided with at least two rows of burner groups at equal intervals along its height direction, and each row of burner groups includes at least two burners 4 distributed at equal intervals along the circumference of the furnace body 1. In any two adjacent rows of burner groups, the burners 4 in one row of burner groups are arranged alternately with the burners 4 in the other row of burner groups.

[0044] In one embodiment, the number of cooling air ducts 3 is no less than three.

[0045] Specifically, the furnace body 1 is provided with at least two rows of cooling air duct groups at equal intervals along its height direction, and each row of cooling air duct groups includes at least two cooling air ducts 3 distributed circumferentially along the furnace body 1. In any two adjacent rows of cooling air duct groups, the cooling air ducts 3 in one row of cooling air duct groups are staggered with the cooling air ducts 3 in the other row of cooling air duct groups.

[0046] Specifically, a cooling air valve 19 is provided on the cooling air duct 3 .

[0047] In one embodiment, the dry pelletizing furnace further includes a temperature probe device 18. The number of the temperature probe devices 18 is no less than two. At least one temperature probe device 18 is disposed in the furnace body 1 and between any two adjacent rows of burner groups, and at least one temperature probe device 18 is disposed in the exhaust pipe 5. The temperature probe device 18 in the exhaust pipe 5 can detect the temperature in the exhaust pipe 5; the temperature probe device 18 in the furnace body 1 can detect the temperature within the furnace body 1.

[0048] In the present invention, the temperature detection device 18 may be a temperature sensor, such as a radiation pyrometer.

[0049] In one embodiment, the dry pelletizing furnace further comprises a frame support structure (not shown in the figure), which is used to support the furnace body 1. The frame support structure is made of metal, such as iron.

[0050] In one embodiment, the furnace body 1 includes a thermal insulation brick layer 21 , a thermal insulation wool layer 22 , and a metal layer 23 , which are sequentially arranged from the inside to the outside.

[0051] When in use, pour dry granular powder into the dry granular powder hopper 7, the amount of dry granular powder added is two-thirds of the volume of the dry granular powder hopper 7, start the exhaust fan to circulate the gas in the furnace body 1 and reduce the pressure at the same time; ventilate and ignite the burners 4 in the bottom row of burner groups, and use the heat generated by combustion to warm the furnace body 1 for a period of time (such as 4-8 hours); open the cooling air valve 19 and the blowing air valve 12, ventilate and ignite the burners 4 in other rows, and detect the temperature change in the furnace body 1 through the temperature detection device 18 in the furnace body 1. When it is detected that the temperature reaches When the temperature reaches a certain value (e.g., 950°C), the hopper valve 11 is opened, and the dry granular powder falls into the blowing duct 6 under the action of its own gravity. Small dry granules are blown into the furnace body 1 by the blowing air, and large dry granules are discharged through the collecting pipe 8. The dry granules entering the furnace body 1 fall under the action of their own gravity. During the falling process, the dry granules are first heated until the surface is melted, and then cooled and shaped by the cold air blown in by the cooling duct 3, so that the edges and corners of the granules become rounded, forming pearl-shaped granules. The discharge valve 14 is opened, and the formed pearl-shaped granules are discharged through the discharge pipe 2.

[0052] In this utility model, unless otherwise specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention may be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A dry pelletizing furnace, characterized in that: The invention comprises a furnace body, which is provided with a discharge pipe, a cooling air duct, a burner, a feeding mechanism and a smoke exhaust pipe in sequence from bottom to top; the feeding mechanism comprises a dry granular powder hopper, a particle blowing air duct and a collecting pipe; the bottom discharge port of the dry granular powder hopper is connected to the particle blowing air duct; the particle blowing air duct comprises a horizontal pipe section and an inclined pipe section, one end of the inclined pipe section is connected to the horizontal pipe section, and the other end of the inclined pipe section is connected to the furnace body, the inclined pipe section gradually inclines upward from the end away from the furnace body to the end close to the furnace body, and the bottom discharge port of the dry granular powder hopper is connected to the inclined pipe section; the collecting pipe is arranged on the lower side of the end of the horizontal pipe section close to the inclined pipe section.

2. The dry pelletizing furnace according to claim 1, wherein: The collecting pipe is provided with a collecting valve, and the bottom discharge port of the dry granular powder hopper is provided with a hopper valve.

3. The dry pelletizing furnace according to claim 1, wherein: One end of the horizontal pipe section away from the inclined pipe section is connected to a particle blowing fan, and the horizontal pipe section is provided with a particle blowing air valve, and the particle blowing air valve is located between the collecting pipe and the particle blowing fan.

4. The dry pelletizing furnace according to claim 1, wherein: The furnace body comprises a heat-insulating brick layer, a heat-insulating cotton layer and a metal layer which are sequentially arranged from the inside to the outside.

5. The dry pelletizing furnace according to claim 1, wherein: The lower part of the furnace body is funnel-shaped, the discharge pipe is arranged at the bottom of the furnace body, and a discharge valve is arranged on the discharge pipe; The upper part of the furnace body is in an inverted funnel shape. The smoke exhaust pipe is arranged on the top of the furnace body. A smoke exhaust valve is provided on the smoke exhaust pipe. An end of the smoke exhaust pipe away from the furnace body is connected to a smoke exhaust fan.

6. The dry pelletizing furnace according to claim 1, wherein: The smoke exhaust pipe is connected to a regulating air duct between the smoke exhaust valve and the furnace body, and the regulating air duct is provided with a regulating air valve.

7. The dry pelletizing furnace according to claim 1, wherein: The burner is provided with a gas interface and a combustion-supporting gas interface, the gas interface is connected to the gas pipe, the combustion-supporting gas interface is connected to the combustion-supporting gas pipe, the gas pipe is provided with a gas valve, and the combustion-supporting gas pipe is provided with a combustion-supporting gas valve; The number of the burners is no less than three, and the number of the cooling air ducts is no less than three.

8. The dry pelletizing furnace according to claim 1, wherein: The furnace body is provided with at least two rows of burner nozzle groups at equal intervals along its height direction, and each row of burner nozzle groups includes at least two burner nozzles distributed at equal intervals along the circumference of the furnace body. In any two adjacent rows of burner nozzle groups, the burners in one row of burner nozzle groups are arranged alternately with the burners in the other row of burner nozzle groups.

9. The dry pelletizing furnace according to claim 1, wherein: The furnace body is provided with at least two rows of cooling air duct groups at equal intervals along its height direction, and each row of cooling air duct groups includes at least two cooling air ducts distributed along the circumference of the furnace body. In any two adjacent rows of cooling air duct groups, the cooling air ducts in one row of cooling air duct groups are staggered with the cooling air ducts in the other row of cooling air duct groups.

10. The dry pelletizing furnace according to claim 1, wherein: The dry pelletizing furnace further comprises a temperature probe device, and the number of the temperature probe devices is not less than two, wherein at least one temperature probe device is arranged in the furnace body, and at least one temperature probe device is arranged in the exhaust pipe.

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