Quantitative pulverized coal supply device capable of preventing dust from overflowing

Abstract

The utility model relates to the technical field of pulverized coal quantitative supply, and discloses an anti-dust-emitting pulverized coal quantitative supply device which comprises an anti-dust-emitting structure, a conveying structure and a main body structure, the conveying structure is located on the lower surface of the anti-dust-emitting structure, and the main body structure is located at the bottom of the anti-dust-emitting structure; the dust overflowing prevention structure comprises a feeding port, a feeding machine is arranged at the bottom of the feeding port, a discharging port is fixedly connected to the bottom of the feeding machine, a protective cover is fixedly connected to the outer wall of the discharging port, a weighing hopper is arranged in the protective cover, and a first discharger is fixedly connected to the bottom of the weighing hopper. A water pipe is fixedly connected to the side away from the protective cover, and an atomizing nozzle is fixedly connected to the outer wall of the water pipe. According to the utility model, through the arrangement of the atomization nozzle, when pulverized coal enters and exits from the weighing hopper at the discharge port, the protective cover plays a role in primary protection, and meanwhile, water mist is sprayed through the atomization nozzle, so that dust suspended in the air can be controlled to fly, and the working condition environment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of quantitative supply of coal powder, in particular to a quantitative supply device of coal powder capable of preventing dusting. Background Art

[0002] The preparation of pulverized coal refers to the process of processing raw coal into pulverized coal with a particle size and moisture content that meet the requirements of blast furnace coal injection through a coal mill. The requirements of the blast furnace injection system for pulverized coal are: more than 80% of the particle size is less than 74μm, and the moisture content is not more than 1%. According to the coal grinding equipment, it can be divided into two types: ball mill pulverization process and medium speed mill pulverization process.

[0003] When the cement rotary kiln is in operation, coal powder needs to be quantitatively supplied. During the supply process, it needs to be weighed in advance and then blown by the Roots blower. The coal powder will generate a lot of dust during the process of entering and exiting the hopper scale. At this time, the dust causes frequent dust in the scale room and poor working environment, which not only affects the stable operation of the coal powder scale, but also poses a major safety hazard. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a pulverized coal quantitative supply device which can prevent ash emission.

[0005] The utility model is implemented by the following technical scheme: a quantitative supply device for pulverized coal with dust prevention, comprising a dust prevention structure, a conveying structure and a main structure, wherein the conveying structure is located on the lower surface of the dust prevention structure, and the main structure is located at the bottom of the dust prevention structure;

[0006] The anti-dust structure includes a feed port, a feed machine is provided at the bottom of the feed port, a discharge port is fixedly connected to the bottom of the feed machine, a protective cover is fixedly connected to the outer wall of the discharge port, a weighing bucket is provided inside the protective cover, a first discharger is fixedly connected to the bottom of the weighing bucket, a water pipe is fixedly connected to the side away from the protective cover, and an atomizing nozzle is fixedly connected to the outer wall of the water pipe.

[0007] As a further improvement of the above solution, the protective cover is configured as a hollow structure, and the number of the water pipes is set to two and they are symmetrically distributed left and right with the protective cover as the center.

[0008] As a further improvement of the above solution, the atomizing nozzles are provided in a plurality and are distributed at equal intervals.

[0009] Through the above technical scheme, the protective cover plays the primary protective role when the coal powder enters and exits the weighing bucket at the discharge port. At the same time, the water pipe is connected to the external water tank, so that water mist is sprayed through the atomizing nozzle. The water mist forms a fog curtain around the supply machine, which can control the dust suspended in the air to fly, realize secondary protection, and improve the working environment.

[0010] As a further improvement of the above scheme, the conveying structure includes an intermediate coal powder bin, the bottom of which is fixedly connected to an intermediate coal powder bin discharger, and the bottom of which is fixedly connected to a quantitative screw conveyor.

[0011] As a further improvement of the above solution, the intermediate pulverized coal bin is fixedly connected to the first discharger.

[0012] Through the above technical solution, the pulverized coal falls into the intermediate pulverized coal bin and flows into the intermediate pulverized coal bin unloader, and then enters the quantitative screw conveyor.

[0013] As a further improvement of the above solution, the main structure includes a connecting pipe, the bottom of the connecting pipe is fixedly connected to a powder conveying pipe, the bottom of the powder conveying pipe is fixedly connected to a Roots blower, and a bracket is arranged on the side away from the Roots blower.

[0014] As a further improvement of the above solution, the connecting pipe is fixedly connected to the quantitative screw conveyor, the water pipe is arranged on the outer wall of the bracket, and the supply machine is arranged on the top of the bracket.

[0015] Through the above technical solution, the pulverized coal is in the pulverized coal conveying pipe, and then the Roots blower is used to convey the pulverized coal to the boiler burner.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The utility model provides a protective cover, a water pipe and an atomizing nozzle. When the coal powder enters and exits the weighing bucket at the discharge port, the protective cover plays a primary protective role. At the same time, the water pipe is connected to an external water tank, so that water mist is sprayed through the atomizing nozzle. The water mist forms a mist curtain around the supply machine, which can control the dust suspended in the air to fly, realize secondary protection, and improve the working environment.

[0018] The utility model sets an intermediate coal powder bin, and the coal powder falls into the intermediate coal powder bin and flows into the intermediate coal powder bin discharger, and then enters the quantitative screw conveyor. The coal powder is in the powder conveying pipe. The roots blower is used to convey the coal powder to the boiler burner. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the overall cross-sectional structure of the utility model;

[0022] Figure 4 For this utility model Figure 3 A schematic diagram of the enlarged structure of the middle part;

[0023] Figure 5 For this utility model Figure 3 Schematic diagram of the enlarged structure of part B in the middle.

[0024] Description of main symbols:

[0025] 1. Anti-dusting structure; 101. Feeding port; 102. Feeding machine; 103. Discharging port; 104. Protective cover; 105. Weighing bucket; 106. First discharger; 107. Water pipe; 108. Atomizing nozzle; 2. Conveying structure; 201. Intermediate pulverized coal bin; 202. Intermediate pulverized coal bin discharger; 203. Quantitative screw conveyor; 3. Main structure; 301. Connecting pipe; 302. Powder conveying pipe; 303. Roots blower; 304. Bracket. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0027] Example:

[0028] Please combine Figure 1-5 The present embodiment is a pulverized coal quantitative supply device for preventing dust emission, comprising an anti-dusting structure 1, a conveying structure 2 and a main structure 3, wherein the conveying structure 2 is located on the lower surface of the anti-dusting structure 1, and the main structure 3 is located at the bottom of the anti-dusting structure 1;

[0029] The anti-dust structure 1 includes a feed port 101, a feed machine 102 is arranged at the bottom of the feed port 101, a discharge port 103 is fixedly connected to the bottom of the feed machine 102, a protective cover 104 is fixedly connected to the outer wall of the discharge port 103, a weighing bucket 105 is arranged inside the protective cover 104, a first discharger 106 is fixedly connected to the bottom of the weighing bucket 105, a water pipe 107 is fixedly connected to the side away from the protective cover 104, and an atomizing nozzle 108 is fixedly connected to the outer wall of the water pipe 107.

[0030] The protective cover 104 is configured as a hollow structure, and two water pipes 107 are configured and are symmetrically distributed left and right with the protective cover 104 as the center.

[0031] There are several atomizing nozzles 108 and they are evenly spaced. When the pulverized coal enters and exits the weighing bucket 105 at the discharge port 103, the protective cover 104 plays a primary protective role. At the same time, the water pipe 107 is connected to the external water tank, so that the atomizing nozzle 108 sprays water mist, and the water mist forms a mist curtain around the supply machine 102, which can control the dust suspended in the air to fly, realize secondary protection, and improve the working environment.

[0032] The conveying structure 2 comprises an intermediate coal powder bin 201 , the bottom of which is fixedly connected to an intermediate coal powder bin discharger 202 , and the bottom of which is fixedly connected to a quantitative screw conveyor 203 .

[0033] The intermediate pulverized coal bin 201 is fixedly connected to the first discharger 106 .

[0034] The main structure 3 includes a connecting pipe 301 , a powder conveying pipe 302 is fixedly connected to the bottom of the connecting pipe 301 , a Roots blower 303 is fixedly connected to the bottom of the powder conveying pipe 302 , and a bracket 304 is provided on a side away from the Roots blower 303 .

[0035] The connecting pipe 301 is fixedly connected to the quantitative screw conveyor 203 , the water pipe 107 is arranged on the outer wall of the bracket 304 , and the supply machine 102 is arranged on the top of the bracket 304 .

[0036] The implementation principle of a pulverized coal quantitative supply device for preventing dust emission in the embodiment of the present application is as follows: when the pulverized coal enters and exits the weighing bucket 105 at the discharge port 103, the protective cover 104 plays the primary protective role, and at the same time, the water pipe 107 is connected to the external water tank, so that water mist is sprayed through the atomizing nozzle 108, and the water mist forms a mist curtain around the supply machine 102, which can control the dust suspended in the air to fly, realize secondary protection, and improve the working environment. After the pulverized coal falls into the intermediate pulverized coal bin 201 at the first discharger 106, it flows into the intermediate pulverized coal bin discharger 202, and then enters the quantitative screw conveyor 203 to be transported to the powder conveying pipe 302, and then the Roots blower 303 is used to transport the pulverized coal to the boiler burner.

[0037] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A pulverized coal quantitative supply device for preventing dust emission, characterized in that: It comprises an anti-dust structure (1), a conveying structure (2) and a main structure (3), wherein the conveying structure (2) is located on the lower surface of the anti-dust structure (1), and the main structure (3) is located at the bottom of the anti-dust structure (1); The anti-dust structure (1) comprises a feed port (101), a feeder (102) is arranged at the bottom of the feed port (101), a discharge port (103) is fixedly connected to the bottom of the feeder (102), a protective cover (104) is fixedly connected to the outer wall of the discharge port (103), a weighing bucket (105) is arranged inside the protective cover (104), a first discharger (106) is fixedly connected to the bottom of the weighing bucket (105), a water pipe (107) is fixedly connected to the side away from the protective cover (104), and an atomizing nozzle (108) is fixedly connected to the outer wall of the water pipe (107).

2. The device for quantitatively supplying pulverized coal to prevent dusting according to claim 1, characterized in that: The protective cover (104) is configured as a hollow structure, and the water pipes (107) are provided in two numbers and are symmetrically distributed with the protective cover (104) as the center.

3. The device for quantitatively supplying pulverized coal to prevent dusting according to claim 1, characterized in that: The atomizing nozzles (108) are provided in a plurality and are distributed at equal intervals.

4. The device for quantitatively supplying pulverized coal to prevent dusting according to claim 1, characterized in that: The conveying structure (2) comprises an intermediate coal powder bin (201), the bottom of the intermediate coal powder bin (201) being fixedly connected to an intermediate coal powder bin discharger (202), and the bottom of the intermediate coal powder bin discharger (202) being fixedly connected to a quantitative screw conveyor (203).

5. The device for quantitatively supplying pulverized coal to prevent dusting according to claim 4, characterized in that: The intermediate pulverized coal bin (201) is fixedly connected to the first discharger (106).

6. The device for quantitatively supplying pulverized coal to prevent dusting according to claim 1, characterized in that: The main structure (3) comprises a connecting pipe (301), the bottom of the connecting pipe (301) is fixedly connected to a powder conveying pipe (302), the bottom of the powder conveying pipe (302) is fixedly connected to a Roots blower (303), and a bracket (304) is provided on a side away from the Roots blower (303).

7. A pulverized coal quantitative supply device for preventing dust emission as claimed in claim 6, characterized in that: The connecting pipe (301) is fixedly connected to the quantitative screw conveyor (203), the water pipe (107) is arranged on the outer wall of the bracket (304), and the supply machine (102) is arranged on the top of the bracket (304).

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