Pulverized coal preparation safety operation fire preventing and extinguishing device

Abstract

The utility model relates to the technical field of pulverized coal preparation, in particular to a pulverized coal preparation safety operation fire preventing and extinguishing device. According to the technical scheme, the coal mill comprises a top cover, a box body and a coal mill box, coal bunkers are installed on the two sides of the upper end face of the coal mill box in a penetrating mode, protection plates are arranged on the two sides of the coal bunkers, the lower end face of the box body is fixed to the upper side of the coal mill box through supporting rods, the upper ends of the protection plates penetrate through the box body, and the top cover is fixed to an opening in the upper end of the box body; the device comprises a top cover, butt joint cylinders are distributed in a notch in the lower end face of the top cover in an array mode, nozzles are arranged in the butt joint cylinders, an alarm device is fixed to the middle of the notch in the lower end of the top cover, a flow dividing box is installed in the middle of the top cover in an embedded mode, a separation frame is fixed to the interior of the flow dividing box, and guide pipes are installed on the two sides of the flow dividing box in a penetrating mode; a storage box is fixed to the middle of the upper end face of the top cover. The device has the advantages that carbon dioxide spraying protection is achieved, pulverized coal is prevented from being damaged, multi-channel point position simultaneous operation is achieved, and safety is high.

Description

Technical Field

[0001] The utility model relates to the technical field of coal powder preparation, in particular to a fire prevention and extinguishing device for safe operation of coal powder preparation. Background Art

[0002] Cement plays a vital role in the construction industry and is widely used in the construction of houses, bridges, roads and other infrastructure. However, there is a serious challenge in the cement production process, which is the safety issue related to coal powder preparation. The coal powder preparation system plays a key role in cement production, but it is also accompanied by a high risk of dust explosion. In recent years, there have been many fires and explosions in coal powder preparation systems.

[0003] Coal mills are needed to produce coal powder in cement. During the processing of coal mills, dust explosions are likely to occur due to high pressure and other reasons. Therefore, protective fire extinguishing equipment is needed to protect them. Existing protective equipment uses direct liquid spraying, which is easy to damage coal powder and inconvenient to use. In addition, the existing protective equipment has a single protective channel, which is not satisfied with the coal mill's multiple channels and coal bunkers, and has low safety. Utility Model Content

[0004] The purpose of the utility model is to provide a fire extinguishing device for safe operation of coal powder preparation, which has the advantages of carbon dioxide spraying protection, avoiding damage to coal powder and simultaneous operation of multiple channel points, high safety, and solves the problems in the above-mentioned background technology.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a fire extinguishing device for safe operation of coal powder preparation, comprising a top cover, a box body and a coal mill box, coal bunkers are installed through both sides of the upper end surface of the coal mill box, and protective plates are provided on both sides of the coal bunker, the lower end surface of the box body is fixed to the upper side of the coal mill box by a support rod, and the upper end of the protective plate passes through the box body, the top cover is fixed at the upper end opening of the box body, and docking tubes are distributed in an array in the recess of the lower end surface of the top cover, and a nozzle is provided inside the docking tube, an alarm device is fixed in the middle of the lower end recess of the top cover, a diverter box is embedded and installed in the middle of the top cover, a partition frame is fixed inside the diverter box, conduits are installed through both sides of the diverter box, a storage box is fixed in the middle of the upper end surface of the top cover, and solenoid valve tubes are installed through both sides of the storage box, and the lower end of the solenoid valve tube passes through and connects to the inside of the diverter box.

[0006] When using a coal powder preparation safety operation fire extinguishing device in the technical solution, the operator starts the device through the external control equipment, detects the fire alarm signal through the built-in sensors of the coal mill and the coal bunker, and starts the corresponding solenoid valve tube through the central control equipment. At this time, the compressed carbon dioxide built into the storage box is introduced into the corresponding passage in the diversion box through the solenoid valve tube, and the carbon dioxide is introduced into the coal mill and the coal bunker respectively through the conduit and the nozzle. The internal oxygen content is reduced by filling with carbon dioxide gas, so that the fire is eliminated and safety is ensured.

[0007] Preferably, a foot pad is fixed on the outer side of the lower end surface of the coal mill, and a total of four foot pads are provided, and the four foot pads are arranged in an array, and an anti-skid pad is fixed on the lower end of the foot pad. The coal mill is placed and supported by the foot pad, and the anti-skid pad increases friction and ensures the stability of the support.

[0008] Preferably, the box body is provided with an array of conduits, and the lower end of the conduit penetrates the interior of the coal bunker, and the upper end of the conduit is plugged into the corresponding docking tube. The carbon dioxide gas is sent into the coal bunker through the conduit via the nozzle in the docking tube.

[0009] Preferably, the partition frame divides the flow diversion box into two passages, and the lower ends of the two solenoid valve tubes are respectively connected to the corresponding passages. The partition frame is used to separate the passages in the flow diversion box to achieve the distinction between different gas supply pipelines.

[0010] Preferably, the upper end of the nozzle penetrates and connects the inner passage of the partition frame, and the upper end of the conduit penetrates and connects the outer passage of the partition frame. The nozzle is connected through the air supply passage inside the partition frame, and the outer air supply passage is connected to the conduit.

[0011] Preferably, the conduit passes through the inner side of the corresponding protective plate, and the lower end of the conduit passes through and communicates with the inside of the coal mill. The protective plate is used to protect the conduit, and the conduit delivers the carbon dioxide gas into the coal mill.

[0012] Preferably, the protective plate is in contact with the outer side of the coal bunker, and the outer side of the coal bunker is protected by the protective plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: powered by an external power supply, the operator starts the device through an external control device, detects fire alarm signals through built-in sensors in the coal mill and coal bunker, and starts the corresponding solenoid valve tube through the central control device. At this time, the compressed carbon dioxide built into the storage box is introduced into the corresponding passage in the diversion box through the solenoid valve tube, and the carbon dioxide is introduced into the coal mill and coal bunker respectively through the conduit and the nozzle. The internal oxygen content is reduced by filling with carbon dioxide gas, so that the fire is eliminated and safety is ensured. The device has a simple structure and is easy to operate. It uses carbon dioxide fire extinguishing to avoid damage to coal powder and damage to raw materials. At the same time, multiple channel points can be extinguished simultaneously, and safety is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the connection structure of the shunt box of the utility model;

[0016] Figure 3 This is a schematic diagram of the top cover structure of the utility model when viewed from above;

[0017] Figure 4 This is a schematic diagram of the cross-sectional structure of the diverter box of the utility model;

[0018] Figure 5 This is a schematic diagram of the box structure of the utility model.

[0019] In the figure: 1. storage box; 2. solenoid valve tube; 3. top cover; 4. box body; 5. support rod; 6. coal mill box; 7. protective plate; 8. foot pad; 9. coal bunker; 10. diverter box; 11. docking tube; 12. conduit; 13. nozzle; 14. alarm device; 15. partition frame; 16. connecting pipe. 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] Embodiment 1

[0022] See also Figures 1 to 5 The utility model provides an embodiment: a fire extinguishing device for safe operation of coal powder preparation, comprising a top cover 3, a box body 4 and a coal mill box 6, coal bunkers 9 are installed through both sides of the upper end surface of the coal mill box 6, and protective plates 7 are provided on both sides of the coal bunker 9. The lower end surface of the box body 4 is fixed to the upper side of the coal mill box 6 by a support rod 5, and the upper end of the protective plate 7 penetrates the box body 4, the top cover 3 is fixed to the upper end opening of the box body 4, and docking tubes 11 are distributed in an array in the recess of the lower end surface of the top cover 3, and a nozzle 13 is provided inside the docking tube 11.

[0023] Furthermore,

[0024] A foot pad 8 is fixed to the outer side of the lower end surface of the coal mill box 6. There are four foot pads 8 in total, and the four foot pads 8 are distributed in an array. An anti-skid pad is fixed to the lower end of the foot pad 8. The placement support of the coal mill box 6 is achieved through the foot pad 8. The anti-skid pad increases friction and ensures the stability of the support.

[0025] Furthermore,

[0026] The inner array of the box body 4 is distributed with conduits 12, and the lower end of the conduit 12 penetrates the interior of the coal bunker 9, and the upper end of the conduit 12 is inserted into the corresponding docking tube 11, and the carbon dioxide gas is sent into the coal bunker 9 through the conduit 12 via the nozzle 13 in the docking tube 11.

[0027] Furthermore,

[0028] The partition frame 15 divides the flow diverter box 10 into two passages, and the lower ends of the two solenoid valve tubes 2 are respectively connected to the corresponding passages. The partition frame 15 divides the flow diverter box 10 into two passages, thereby distinguishing different gas supply pipelines.

[0029] Embodiment 2

[0030] See also Figures 1 to 5 The utility model provides an embodiment: a fire extinguishing device for safe operation of coal powder preparation, comprising a top cover 3, a box body 4 and a coal mill box 6, an alarm device 14 is fixed in the middle of the lower end recess of the top cover 3, a diverter box 10 is embedded and installed in the middle of the top cover 3, a partition frame 15 is fixed inside the diverter box 10, both sides of the diverter box 10 are penetrated and installed with a conduit 12, a storage box 1 is fixed in the middle of the upper end surface of the top cover 3, both sides of the storage box 1 are penetrated and installed with an electromagnetic valve tube 2, and the lower end of the electromagnetic valve tube 2 is penetrated and connected to the inside of the diverter box 10.

[0031] Furthermore,

[0032] The upper end of the nozzle 13 penetrates the inner passage of the partition frame 15, and the upper end of the conduit 12 penetrates the outer passage of the partition frame 15. The nozzle 13 is connected through the inner air supply passage of the partition frame 15, and the outer air supply passage is connected to the conduit 12.

[0033] Furthermore,

[0034] The conduit 12 passes through the inner side of the corresponding protection plate 7 , and the lower end of the conduit 12 passes through and is connected to the interior of the coal mill 6 . The conduit 12 is protected by the protection plate 7 , and the conduit 12 delivers the carbon dioxide gas into the coal mill 6 .

[0035] Furthermore,

[0036] The protective plate 7 is in contact with the outer side of the coal bunker 9 , and the outer side of the coal bunker 9 is protected by the protective plate 7 .

[0037] During the operation of the utility model, an external power supply is used for power supply, and the operator starts the device through an external control device. The fire alarm signal is detected by the built-in sensors of the coal mill box 6 and the coal bunker 9, and the corresponding solenoid valve tube 2 is started through the central control device. At this time, the compressed carbon dioxide built into the storage box 1 is introduced into the corresponding passage in the diversion box 10 through the solenoid valve tube 2, and the carbon dioxide is introduced into the coal mill box 6 and the coal bunker 9 respectively through the conduit 12 and the nozzle 13. The internal oxygen content is reduced by filling with carbon dioxide gas, so that the fire is eliminated and safety is ensured.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fire extinguishing device for safe operation of coal powder preparation, comprising a top cover (3), a box body (4) and a coal grinding box (6), characterized in that: Coal bins (9) are installed through both sides of the upper end surface of the coal mill box (6), and protective plates (7) are provided on both sides of the coal bins (9). The lower end surface of the box body (4) is fixed to the upper side of the coal mill box (6) through a support rod (5), and the upper end of the protective plate (7) passes through the box body (4). The top cover (3) is fixed to the upper end opening of the box body (4). The lower end surface of the top cover (3) has a concave surface with a docking tube (11) arranged in an array, and a nozzle (13) is provided inside the docking tube (11). The top cover ( An alarm device (14) is fixed in the middle of the lower end notch of the top cover (3), a diversion box (10) is embedded and installed in the middle of the top cover (3), a partition frame (15) is fixed inside the diversion box (10), both sides of the diversion box (10) are penetrated and installed with a conduit (12), a storage box (1) is fixed in the middle of the upper end surface of the top cover (3), both sides of the storage box (1) are penetrated and installed with an electromagnetic valve tube (2), and the lower end of the electromagnetic valve tube (2) is penetrated and connected to the inside of the diversion box (10).

2. A fire extinguishing device for safe operation of coal powder preparation according to claim 1, characterized in that: A foot pad (8) is fixed to the outer side of the lower end surface of the coal mill box (6), and there are four foot pads (8) in total, and the four foot pads (8) are distributed in an array, and an anti-slip pad is fixed to the lower end of the foot pad (8).

3. A fire extinguishing device for safe operation of coal powder preparation according to claim 1, characterized in that: The box body (4) is provided with a conduit (12) in an array inside, and the lower end of the conduit (12) penetrates the inside of the coal bunker (9), and the upper end of the conduit (12) is inserted into the corresponding docking tube (11).

4. A fire extinguishing device for safe operation of coal powder preparation according to claim 1, characterized in that: The partition frame (15) divides the flow dividing box (10) into two passages, and the lower ends of the two solenoid valve tubes (2) are respectively connected to the corresponding passages.

5. A fire extinguishing device for safe operation of coal powder preparation according to claim 1, characterized in that: The upper end of the nozzle (13) passes through the inner passage of the connecting partition frame (15), and the upper end of the conduit (12) passes through the outer passage of the connecting partition frame (15).

6. A fire extinguishing device for safe operation of coal powder preparation according to claim 1, characterized in that: The conduit (12) passes through the inner side of the corresponding protection plate (7), and the lower end of the conduit (12) penetrates and communicates with the interior of the coal mill box (6).

7. A fire extinguishing device for safe operation of coal powder preparation according to claim 1, characterized in that: The protective plate (7) is in contact with the outer side of the coal bunker (9).

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