Circulating device of pulverized coal feeding system

Abstract

The utility model relates to the technical field of coal chemical industry, in particular to a circulating device of a pulverized coal feeding system, which adopts the technical scheme that the circulating device comprises a pulverized coal tank, a discharging pipe and a fan, the lower end of the pulverized coal tank is provided with a blanking pipe, the blanking pipe is communicated with the pulverized coal tank, the lower end of the blanking pipe is closed, and the inner wall of the bottom end of the blanking pipe is rotatably provided with a first rotating shaft; the first rotating shaft extends into the pulverized coal tank, a spiral blade is arranged on the first rotating shaft, the discharging pipe is installed at the side end of the discharging pipe, the discharging pipe communicates with the discharging pipe, a second rotating shaft is rotatably installed on the inner wall of the upper end of the discharging pipe, scattering rods distributed in an array mode are installed on the second rotating shaft, and a blowing pipe is installed at the tail end of the discharging pipe; the blowing pipe is communicated with the discharging pipe, the fan is installed at the starting end of the blowing pipe, and the fan comprises a shell, third driving equipment, an air outlet pipe and an air inlet pipe. The pulverized coal feeding device has the advantages that pulverized coal can be conveyed and scattered, and it is guaranteed that the pulverized coal is stably fed in a circulating mode.

Description

Technical Field

[0001] The utility model relates to the technical field of coal chemical industry, in particular to a circulation device for a coal powder feeding system. Background Art

[0002] Coal powder refers to coal with a particle size of less than 0.5 mm. It is the product of coal processed by mechanical methods such as crushing and grinding. Coal powder is widely used in many industrial fields, especially in the power, chemical and metallurgical industries.

[0003] When using coal powder as fuel, it needs to be added into the equipment. At present, coal powder is fed by injection. During the feeding process of coal powder, it is easy to feed too much or too little, which will affect the operation of boiler equipment. In addition, coal powder is easy to agglomerate due to the stored raw materials, which will affect the injection work of coal powder. Utility Model Content

[0004] The utility model aims to provide a circulation device for a coal powder feeding system, which has the advantages of being able to convey and disperse coal powder, ensuring stable circulation feeding of coal powder, and 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 feeding system circulation device, comprising a coal powder tank, a discharge pipe and a fan, a lower end of the coal powder tank is installed with a discharge pipe, the discharge pipe is connected with the coal powder tank, and the lower end of the discharge pipe is closed, a first rotating shaft is rotatably installed on the inner wall of the bottom end of the discharge pipe, the first rotating shaft extends into the coal powder tank, and spiral blades are arranged on the first rotating shaft, the discharge pipe is installed on the side end of the discharge pipe, and the discharge pipe is connected with the discharge pipe, a second rotating shaft is rotatably installed on the inner wall of the upper end of the discharge pipe, and array-dispersing rods are installed on the second rotating shaft, a blowing pipe is installed at the end of the discharge pipe, the blowing pipe is connected with the discharge pipe, the fan is installed at the starting end of the blowing pipe, and the fan comprises a shell, a third driving device, an air outlet pipe and an air inlet pipe.

[0006] When using the coal powder feeding system circulation device of the utility model,

[0007] The coal powder is added into the coal powder tank through the feeding pipe and the feeding hopper. When the coal powder is fed, the first rotating shaft is rotated by the operation of the first driving device, and the coal powder can enter the feeding pipe under the action of the spiral blades. Under the continuous conveying of the spiral blades, the coal powder can enter the discharging pipe. The second rotating shaft is rotated by the operation of the second driving device, and the coal powder can be broken up by the action of the breaking rod to prevent the coal powder with agglomerates from entering. The broken up coal powder can enter the blowing pipe, and the blowing pipe can be blown by the operation of the fan. The coal powder can be transported and fed under the action of the wind.

[0008] Preferably, a feed pipe is installed on one side of the upper end surface of the pulverized coal tank, and a feed hopper is provided at the upper end of the feed pipe.

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

[0010] Preferably, a second driving device is installed at the upper end of the discharge pipe, and the main shaft of the second driving device is connected to the axis of the second rotating shaft.

[0011] Preferably, an impeller is rotatably installed in the shell, the third driving device is arranged at the rear end of the shell, the main shaft of the third driving device is connected to the axis of the impeller, the air inlet pipe is arranged at the front end of the shell, the air outlet pipe is arranged at the side end of the shell, and the end of the air outlet pipe is connected to the blowing pipe.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: when feeding coal powder, the coal powder is transported by spiral blades, and the coal powder feeding amount can be controlled under the transportation of the spiral blades to prevent excessive or insufficient feeding, and the coal powder can be broken up during the coal powder feeding process to prevent agglomerated coal powder from entering. The cooperation of the two ensures the stable circulation feeding of coal powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front view structural schematic diagram of the utility model;

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model in a front view;

[0015] Figure 3 It is a rear view structural schematic diagram of the utility model.

[0016] The reference numerals and names in the figures are as follows:

[0017] 101. pulverized coal tank; 102. feed pipe; 103. feed hopper; 104. discharge pipe; 105. first drive device; 106. first rotating shaft; 107. spiral blade; 201. discharge pipe; 202. second drive device; 203. injection pipe; 204. second rotating shaft; 205. breaking rod; 301. fan; 302. housing; 303. third drive device; 304. air outlet pipe; 305. air inlet pipe. DETAILED DESCRIPTION

[0018] 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.

[0019] Example

[0020] See also Figures 1 to 3 The utility model provides an embodiment: a circulation device for a pulverized coal feeding system, comprising:

[0021] A pulverized coal tank 101, a discharge pipe 201 and a fan 301, wherein a discharge pipe 104 is installed at the lower end of the pulverized coal tank 101, the discharge pipe 104 is connected to the pulverized coal tank 101, and the lower end of the discharge pipe 104 is closed, and a first rotating shaft 106 is rotatably installed on the inner wall of the bottom end of the discharge pipe 104, the first rotating shaft 106 extends into the pulverized coal tank 101, and a spiral blade 107 is arranged on the first rotating shaft 106, the discharge pipe 201 is installed at the side end of the discharge pipe 104, and the discharge The tube 201 is connected with the discharge pipe 104, and a second rotating shaft 204 is rotatably installed on the inner wall of the upper end of the discharge pipe 201, and the second rotating shaft 204 is installed with array-distributed breaking rods 205, and a blowing pipe 203 is installed at the end of the discharge pipe 201, and the blowing pipe 203 is connected with the discharge pipe 201, and the fan 301 is installed at the starting end of the blowing pipe 203, and the fan 301 includes a shell 302, a third driving device 303, an air outlet pipe 304 and an air inlet pipe 305.

[0022] In this embodiment, coal powder is added into the coal powder tank 101 through the feeding pipe 102 and the feeding hopper 103. When the coal powder is fed, the first driving device 105 is operated to rotate the first rotating shaft 106, and the coal powder can enter the discharge pipe 104 under the action of the spiral blade 107. Under the continuous conveyance of the spiral blade 107, the coal powder can enter the discharge pipe 201, and the second driving device 202 can make the second rotating shaft 204 rotate. Under the action of the breaking rod 205, the coal powder can be broken up to prevent the coal powder from agglomerating. The broken up coal powder can enter the blowing pipe 203, and the fan 301 can blow air into the blowing pipe 203, so that the coal powder can be transported and fed under the action of the wind.

[0023] Furthermore,

[0024] A feed pipe 102 is installed on one side of the upper end surface of the pulverized coal tank 101, and a feed hopper 103 is provided on the upper end of the feed pipe 102. The pulverized coal can be added into the pulverized coal tank 101 through the cooperation of the feed pipe 102 and the feed hopper 103.

[0025] Furthermore,

[0026] A first driving device 105 is installed at the lower end of the feed tube 104, and the main shaft of the first driving device 105 is connected to the axis of the first rotating shaft 106. The first rotating shaft 106 can be rotated by the operation of the first driving device 105.

[0027] Furthermore,

[0028] The upper end of the discharge pipe 201 is provided with a second driving device 202, and the main shaft of the second driving device 202 is connected to the axis of the second rotating shaft 204. The second rotating shaft 204 can be rotated by the operation of the second driving device 202.

[0029] Furthermore,

[0030] An impeller is rotatably mounted in the housing 302, the third driving device 303 is disposed at the rear end of the housing 302, the main shaft of the third driving device 303 is connected to the axis of the impeller, the air inlet pipe 305 is disposed at the front end of the housing 302, the air outlet pipe 304 is disposed at the side end of the housing 302, and the end of the air outlet pipe 304 is connected to the blowing pipe 203. The third driving device 303 can make the impeller rotate at a high speed, and when the impeller rotates at a high speed, external air can enter from the air inlet pipe 305, and can blow air into the blowing pipe 203 through the air outlet pipe 304.

[0031] The first drive device 105, the second drive device 202 and the fan 301 in the utility model are well-known devices, and their working principles and circuit connections are well known to technicians in the field. They are all conventional means or common knowledge and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0032] 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 circulation device for a pulverized coal feeding system, comprising a pulverized coal tank (101), a discharge pipe (201) and a fan (301), characterized in that: A feed pipe (104) is installed at the lower end of the pulverized coal tank (101), the feed pipe (104) is connected to the pulverized coal tank (101), and the lower end of the feed pipe (104) is closed. A first rotating shaft (106) is rotatably installed on the inner wall of the bottom end of the feed pipe (104), the first rotating shaft (106) extends into the pulverized coal tank (101), and a spiral blade (107) is arranged on the first rotating shaft (106). The discharge pipe (201) is installed at the side end of the discharge pipe (104), and the discharge pipe (201) is connected to the discharge pipe (104). ), a second rotating shaft (204) is rotatably mounted on the inner wall of the upper end of the discharge pipe (201), and the second rotating shaft (204) is mounted with dispersing rods (205) distributed in an array, a blowing pipe (203) is mounted at the end of the discharge pipe (201), and the blowing pipe (203) is connected to the discharge pipe (201), and the fan (301) is mounted at the starting end of the blowing pipe (203), and the fan (301) includes a shell (302), a third driving device (303), an air outlet pipe (304) and an air inlet pipe (305).

2. A pulverized coal feeding system circulation device according to claim 1, characterized in that: A feed pipe (102) is installed on one side of the upper end surface of the pulverized coal tank (101), and a feed hopper (103) is arranged at the upper end of the feed pipe (102).

3. A pulverized coal feeding system circulation device according to claim 1, characterized in that: A first driving device (105) is installed at the lower end of the feed tube (104), and the main shaft of the first driving device (105) is connected to the axis of the first rotating shaft (106).

4. A pulverized coal feeding system circulation device according to claim 1, characterized in that: A second driving device (202) is installed at the upper end of the discharge pipe (201), and the main shaft of the second driving device (202) is connected to the axis of the second rotating shaft (204).

5. The pulverized coal feeding system circulation device according to claim 1, characterized in that: An impeller is rotatably mounted in the shell (302); the third driving device (303) is arranged at the rear end of the shell (302); the main shaft of the third driving device (303) is connected to the axis of the impeller; the air inlet pipe (305) is arranged at the front end of the shell (302); the air outlet pipe (304) is arranged at the side end of the shell (302); and the end of the air outlet pipe (304) is connected to the blowing pipe (203).

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