Annular heating and ventilating device for pulverized coal

Abstract

The utility model relates to the technical field of pulverized coal feeding, in particular to an annular pulverized coal heating and ventilating device, which adopts the technical scheme that the annular pulverized coal heating and ventilating device comprises a fan, a conveying pipe and a discharging pipe, the conveying pipe is mounted at an air outlet of the fan, a first rotating shaft is rotatably mounted in the conveying pipe, and a first stirring rod is mounted on the first rotating shaft; the conveying pipe is installed at the tail end of the material conveying pipe, a protection pipe is arranged on the outer side of the conveying pipe, heating pipes distributed at equal intervals are arranged on the outer surface of the conveying pipe, the discharging pipe is installed at the tail end of the conveying pipe and communicated with the conveying pipe, and an annular pipe communicated with the discharging pipe is installed at the upper end of the discharging pipe. The annular pipe is composed of eight pipelines from outside to inside and from large to small, and annular channels are formed among the pipelines. The pulverized coal burner has the advantages of being capable of heating air and pulverized coal, conveying the pulverized coal through the annular channel, enabling the pulverized coal to be evenly distributed, and being capable of improving burning heating efficiency and reducing energy consumption under the cooperation of the air and the pulverized coal.

Description

Technical Field

[0001] The utility model relates to the technical field of coal powder feeding, in particular to a coal powder annular heating and ventilation device. Background Art

[0002] Pulverized coal refers to coal with a particle size of less than 0.5 mm. Its high energy density and abundant reserves make it one of the indispensable fuels in industrial stoves and other equipment. Pulverized coal is widely used as boiler fuel in the production process of steel, cement, glass, ceramics, textiles, printing and dyeing industries.

[0003] When pulverized coal is used as fuel, it needs to be transported to the combustion chamber through a fan for combustion. However, direct transportation tends to make the pulverized coal more concentrated after entering and the distribution is not uniform. Moreover, when the external ambient temperature is low, low-temperature air will enter the combustion chamber. The effects of these two factors will affect the heating efficiency and increase energy consumption. Utility Model Content

[0004] The purpose of the utility model is to provide a coal powder annular heating and ventilation device, which can heat air and coal powder, and transport coal powder through an annular channel to make the coal powder evenly distributed. The cooperation of the two can improve the combustion heating efficiency and reduce energy consumption, thereby solving the problems raised by the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coal powder annular heating and ventilation device, comprising a fan, a conveying pipe and a discharge pipe, a conveying pipe is installed at the air outlet of the fan, a discharge pipe is installed at the upper end of the conveying pipe, a first rotating shaft is rotatably installed in the conveying pipe, a first stirring rod is installed on the first rotating shaft, the conveying pipe is installed at the end of the conveying pipe, a protective pipe is arranged on the outside of the conveying pipe, and equidistantly distributed heating pipes are arranged on the outer surface of the conveying pipe, the discharge pipe is installed at the end of the conveying pipe, the discharge pipe is connected with the conveying pipe, an annular pipe connected with the discharge pipe is installed at the upper end of the discharge pipe, the annular pipe is composed of eight pipes from large to small from outside to inside, and an annular channel is formed between the pipes.

[0006] When using the coal powder annular heating and ventilation device of the utility model,

[0007] Coal powder is added into the material box, and the coal powder can enter the conveying pipe through the discharge pipe, and air can be supplied into the conveying pipe by the operation of the fan, and the coal powder can be transported under the action of wind. At the same time, the first rotating shaft can be rotated by the operation of the first driving device, and the coal powder can be broken up by the first stirring rod, so that the coal powder can be transported conveniently. When the coal powder is transported through the conveying pipe, the coal powder and air in the conveying pipe can be heated by the operation of the heating pipe, and the coal powder can be discharged from the conveying pipe and enter the discharge pipe. The second rotating shaft can be rotated by the operation of the second driving device, and the airflow can be disturbed and the coal powder can be broken up by the second stirring rod, so that the coal powder enters multiple annular channels and is discharged from multiple annular channels, so that the discharged coal powder can be evenly distributed.

[0008] Preferably, the feed pipe is connected to the feed conveying pipe, a material box is installed at the upper end of the feed pipe, and a feed port is provided at the upper end of the material box.

[0009] Preferably, a first driving device is installed at the lower end of the feeding pipe, and the main shaft of the first driving device is connected to the axis of the first rotating shaft.

[0010] Preferably, an equipment cavity is formed between the protection tube and the feed pipe, and the heating tube is located in the equipment cavity.

[0011] Preferably, a second rotating shaft is rotatably mounted at the center of the lower end surface of the annular tube, the second rotating shaft is located in the discharge pipe, and a second stirring rod is mounted on the second rotating shaft.

[0012] Preferably, a second driving device is installed in the annular tube, and a main shaft of the second driving device is connected to the axis of the second rotating shaft.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: when the coal powder is transported through the conveying pipe, the coal powder and air in the conveying pipe can be heated by the heating pipe, and when the coal powder is discharged, it passes through multiple annular channels, so that the discharged coal powder can be evenly distributed. The cooperation of the two can improve the combustion heating efficiency and reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view structural schematic diagram of the utility model;

[0015] Figure 2 It is a rear view structural schematic diagram of the utility model;

[0016] Figure 3 It is a first cross-sectional structural schematic diagram of the utility model in a front view;

[0017] Figure 4 It is a second cross-sectional structural schematic diagram of the utility model in a front view.

[0018] The reference numerals and names in the figures are as follows:

[0019] 101. Fan; 102. Feed pipe; 103. First drive device; 104. Feed pipe; 105. Material box; 106. Feed inlet; 107. First rotating shaft; 108. First stirring rod; 201. Delivery pipe; 202. Protection pipe; 203. Equipment cavity; 204. Heating pipe; 301. Discharge pipe; 302. Annular pipe; 303. Annular channel; 304. Second drive device; 305. Second rotating shaft; 306. Second stirring rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example

[0022] See also Figures 1 to 4 The utility model provides an embodiment: a coal powder annular heating and ventilation device, comprising:

[0023] A fan 101, a conveying pipe 201 and a discharge pipe 301, wherein a conveying pipe 102 is installed at the air outlet of the fan 101, a discharge pipe 104 is installed at the upper end of the conveying pipe 102, a first rotating shaft 107 is rotatably installed in the conveying pipe 102, a first stirring rod 108 is installed on the first rotating shaft 107, the conveying pipe 201 is installed at the end of the conveying pipe 102, a protective pipe 202 is arranged on the outer side of the conveying pipe 201, and heating pipes 204 are arranged on the outer surface of the conveying pipe 201 at equal intervals, the discharge pipe 301 is installed at the end of the conveying pipe 201, the discharge pipe 301 is communicated with the conveying pipe 201, an annular pipe 302 communicated with the discharge pipe 301 is installed at the upper end of the discharge pipe 301, the annular pipe 302 is composed of eight pipes arranged from large to small from outside to inside, and an annular channel 303 is formed between the pipes.

[0024] In this embodiment, coal powder is added into the material box 105, and the coal powder can enter the conveying pipe 102 through the discharge pipe 104. The fan 101 can supply air into the conveying pipe 102, and the coal powder can be transported under the action of wind. At the same time, the first driving device 103 can make the first rotating shaft 107 rotate, and the first stirring rod 108 can break up the coal powder, so as to facilitate the transportation of the coal powder. When the coal powder is transported through the conveying pipe 201, the heating pipe 204 can heat the coal powder and air in the conveying pipe 201, and the coal powder can be discharged from the conveying pipe 201 to enter the discharge pipe 301, and the second driving device 304 can make the second rotating shaft 305 rotate, and the second stirring rod 306 can disrupt the airflow and break up the coal powder, so that the coal powder enters multiple annular channels 303 and is discharged from multiple annular channels 303, so that the discharged coal powder can be evenly distributed.

[0025] Furthermore, the feed pipe 104 is connected to the feed pipe 102 , a material box 105 is installed at the upper end of the feed pipe 104 , and a feed port 106 is provided at the upper end of the material box 105 .

[0026] Furthermore, a first driving device 103 is installed at the lower end of the feeding pipe 102, and the main shaft of the first driving device 103 is connected to the axis of the first rotating shaft 107. The first rotating shaft 107 can be rotated by the operation of the first driving device 103.

[0027] Furthermore, an equipment cavity 203 is formed between the protection tube 202 and the feed tube 102, and the heating tube 204 is located in the equipment cavity 203. The protection tube 202 can be provided to insulate and protect the heating tube 204.

[0028] Furthermore, a second rotating shaft 305 is rotatably mounted at the center of the lower end surface of the annular tube 302 . The second rotating shaft 305 is located in the discharge tube 301 . A second stirring rod 306 is mounted on the second rotating shaft 305 .

[0029] Furthermore, a second driving device 304 is installed in the annular tube 302, and the main shaft of the second driving device 304 is connected to the axis of the second rotating shaft 305. The second rotating shaft 305 can be rotated by the operation of the second driving device 304.

[0030] The fan 101, the first drive device 103 and the second drive device 304 in the utility model are well-known devices, and their working principles and circuit connections are well known to technicians in the field, and are conventional means or common knowledge, so they will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A coal powder annular heating and ventilation device, comprising a fan (101), a conveying pipe (201) and a discharge pipe (301), characterized in that: A material delivery pipe (102) is installed at the air outlet of the fan (101), a material discharge pipe (104) is installed at the upper end of the material delivery pipe (102), a first rotating shaft (107) is rotatably installed in the material delivery pipe (102), a first stirring rod (108) is installed on the first rotating shaft (107), the delivery pipe (201) is installed at the end of the material delivery pipe (102), a protective pipe (202) is arranged on the outer side of the delivery pipe (201), and the delivery pipe (201) is provided with a plurality of protective pipes (202). The outer surface of the pipe (201) is provided with equidistantly distributed heating pipes (204); the discharge pipe (301) is installed at the end of the conveying pipe (201); the discharge pipe (301) is connected to the conveying pipe (201); an annular pipe (302) connected to the discharge pipe (301) is installed at the upper end of the discharge pipe (301); the annular pipe (302) is composed of eight pipes arranged from large to small from outside to inside, and an annular channel (303) is formed between the pipes.

2. A pulverized coal annular heating and ventilation device according to claim 1, characterized in that: The feed pipe (104) is in communication with the feed pipe (102), a material box (105) is installed at the upper end of the feed pipe (104), and a feed port (106) is provided at the upper end of the material box (105).

3. A pulverized coal annular heating and ventilation device according to claim 1, characterized in that: A first driving device (103) is installed at the lower end of the conveying pipe (102), and the main shaft of the first driving device (103) is connected to the axis of the first rotating shaft (107).

4. The coal powder annular heating and ventilation device according to claim 1, characterized in that: An equipment cavity (203) is formed between the protection tube (202) and the material delivery tube (102), and the heating tube (204) is located in the equipment cavity (203).

5. The coal powder annular heating and ventilation device according to claim 1, characterized in that: A second rotating shaft (305) is rotatably mounted at the center of the lower end surface of the annular tube (302). The second rotating shaft (305) is located inside the discharge tube (301), and a second stirring rod (306) is mounted on the second rotating shaft (305).

6. A pulverized coal annular heating and ventilation device according to claim 5, characterized in that: A second driving device (304) is installed in the annular tube (302), and the main shaft of the second driving device (304) is connected to the axis of the second rotating shaft (305).

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