Fire fighting device for chain bucket conveyor and chain bucket conveyor

Abstract

The utility model provides a fire fighting device for a chain bucket conveyor, which belongs to the technical field of safe material conveying and comprises an air source pipe assembly and an air inlet assembly. The air inlet assembly comprises an air bin and a breathable plate connected to one side of the air bin, an air distribution plate is arranged in the air bin, the space between the air distribution plate and the breathable plate is filled with a silencing breathable layer of a porous net structure, a plurality of air distribution holes are evenly formed in the air distribution plate, and a plurality of breathable holes are evenly formed in the breathable plate; the permeable plate is used for being communicated with an air inlet of the chain bucket conveyor; the gas source pipe assembly comprises a gas source pipeline and a gas switch valve arranged on the gas source pipeline, one end of the gas source pipeline is communicated with the fire-fighting gas cylinder, the other end of the gas source pipeline is communicated with a gas inlet of the gas bin, and the gas inlet of the gas bin is formed in the side, away from the permeable plate, of the gas distribution plate. The device can prevent the materials from spontaneous combustion or extinguish the materials which are spontaneously combusted, can reduce the impact of gas introduction on equipment, prevents the materials from splashing and scattering, and solves the problem that the air is not exhausted thoroughly.

Description

Technical Field

[0001] This utility model belongs to the field of material safety conveying technology, and more specifically, it relates to a fire-fighting device for a chain bucket conveyor and a chain bucket conveyor. Background Technology

[0002] Chain bucket conveyors are used to transport bulk materials. Through the linear arrangement of chain buckets inside the machine, the material entering the machine from the tail feed port is transported to the head discharge port. They are widely used in many fields such as power, metallurgy, and chemical industry.

[0003] For materials with high temperatures, low ignition points, or those that emit volatile flammable gases, oxidation reactions can occur with the air inside the conveyor during transport, posing a risk of spontaneous combustion. Therefore, fire-fighting devices must be installed on the chain bucket conveyor. Existing fire-fighting methods for chain bucket conveyors primarily use water spray or carbon dioxide filling. Water spray may fail due to the reaction between the material and water, and there is also a risk of water explosion. Carbon dioxide filling is more effective than water spray, but because carbon dioxide is directly piped into the equipment, the high-pressure, high-speed airflow can impact the equipment and materials, causing deformation and damage, and material splashing and scattering. Furthermore, it can disturb the air inside the equipment, resulting in incomplete air removal and affecting the fire-fighting effect.

[0004] Therefore, it is necessary to study a fire-fighting device for chain bucket conveyors to meet the requirements of safe material transportation. Utility Model Content

[0005] The purpose of this utility model is to provide a fire-fighting device for a chain bucket conveyor and a chain bucket conveyor, so as to effectively solve the problem of equipment deformation caused by the impact of gas introduction on the equipment inside the chain bucket conveyor while ensuring the fire-fighting effect, and to solve the problems of material splashing and scattering and incomplete air discharge.

[0006] To achieve the above objectives, the first aspect of this utility model provides a fire-fighting device for a chain bucket conveyor, including an air source pipe assembly and an air inlet assembly;

[0007] The air intake assembly includes an air chamber and a permeable plate connected to one side of the air chamber. An air distribution plate is provided inside the air chamber. A sound-absorbing and breathable layer with a porous mesh structure is filled between the air distribution plate and the permeable plate. A plurality of air distribution holes are evenly arranged on the air distribution plate, and a plurality of permeable holes are evenly arranged on the permeable plate. The permeable plate is used to connect with the air inlet of the chain bucket conveyor.

[0008] The gas source pipe assembly includes a gas source pipe and a gas switch valve installed on the gas source pipe. One end of the gas source pipe is connected to a fire-fighting gas cylinder, and the other end is connected to the air inlet of the gas chamber. The air inlet of the gas chamber is located on the side of the air distribution plate away from the ventilated plate.

[0009] Further, a pressure regulating valve is arranged on the gas source pipeline.

[0010] Further, the gas chamber is in a hollow structure of a circular truncated cone shape.

[0011] In the second aspect, the utility model provides a chain bucket conveyor, including chain bucket conveyor assembly and the fire fighting device of any one of above, the air -permeable board is connected with chain bucket conveyor assembly through fastener.

[0012] Further, the chain bucket conveyor assembly includes a conveyor body and a drive motor, the conveyor body is provided with a feeding port, a discharging port and an air inlet, the feeding port is communicated with the feeding assembly, the discharging port is communicated with the discharging assembly, and the drive motor is used to drive the conveyor body to convey materials.

[0013] Further, the feeding assembly includes a feeding pipe and a material switch valve arranged on the feeding pipe, one end of the feeding pipe is communicated with a material hopper containing materials, and the other end is communicated with the feeding port.

[0014] Further, the discharging assembly includes a discharging pipe and a discharging switch valve arranged on the discharging pipe, one end of the discharging pipe is communicated with the discharging port.

[0015] Further, a smoke temperature sensor is further arranged on the discharging pipe, and the smoke temperature sensor is used to detect the temperature of materials and smoke generated by combustion.

[0016] Further, the discharging pipe is further communicated with a venting assembly, and the venting assembly includes a venting pipe and a check valve arranged on the venting pipe.

[0017] Further, the smoke temperature sensor is interlocked with the drive motor, the material switch valve, the discharging switch valve and the gas switch valve.

[0018] Compared with the prior art, the utility model has the following technical effects:

[0019] The fire fighting device for chain bucket conveyor of the utility model utilizes the multiple gas distribution holes on the gas distribution plate in the gas chamber to make the high-pressure and high-speed fire-fighting gas from the fire-fighting gas cylinder flow into the sound-absorbing and air-permeable layer of the air inlet assembly uniformly, utilizes the porous mesh fiber structure of the sound-absorbing and air-permeable layer to further uniformly distribute the gas, reduces the airflow velocity and noise, then the fire-fighting gas uniformly enters the inside of the chain bucket conveyor equipment through the air-permeable holes on the air-permeable plate, realizes the exclusion of the air inside the equipment, prevents the spontaneous combustion of materials or extinguishes the materials that have already self-ignited, and can reduce the impact of gas introduction on the equipment, avoids the splashing and scattering of materials and solves the problem of incomplete air exhaust.

[0020] The chain bucket conveyor of this utility model has the same advantages as the above-mentioned one because it is equipped with a fire-fighting device for the chain bucket conveyor of this utility model, which will not be described in detail here. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of a fire-fighting device for a chain bucket conveyor provided in Embodiment 1 of this utility model;

[0023] Figure 2 for Figure 1 A schematic diagram of the side view structure;

[0024] Figure 3 for Figure 1 Schematic diagram of the structure of the permeable plate (AA);

[0025] Figure 4 for Figure 1 Schematic diagram of the structure of the air distribution plate (BB);

[0026] Figure 5 This is a schematic diagram of the structure of a chain bucket conveyor provided in Embodiment 2 of this utility model.

[0027] The following are the labeling elements in the figure:

[0028] 1. Chain bucket conveyor assembly; 11. Conveyor body; 12. Drive motor; 13. Feed inlet; 14. Discharge outlet; 15. Air inlet; 2. Feeding assembly; 21. Feeding pipe; 22. Material switch valve; 3. Air source pipe assembly; 31. Air source pipeline; 32. Gas switch valve; 33. Pressure regulating valve; 4. Air inlet assembly; 41. Air chamber; 42. Air distribution plate; 43. Breathable plate; 44. Noise-absorbing and breathable layer; 45. Fasteners; 5. Discharge assembly; 51. Discharge pipe; 52. Smoke temperature sensor; 53. Discharge switch valve; 6. Venting assembly; 61. Venting pipe; 62. Check valve. Detailed Implementation

[0029] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0030] It is to be noted that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or indirectly connected to the other element.

[0031] It should be understood that the terms "length", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0032] The terms used in the embodiments of the present application are merely for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0033] Embodiment 1

[0034] Please refer to Figures 1-4 A fire extinguishing device for chain bucket conveyor provided by the embodiments of the present application will be described.

[0035] In an embodiment of the present application, the fire extinguishing device for chain bucket conveyor provided by the embodiments of the present application comprises a gas source pipe assembly 3 and an air inlet assembly 4; wherein the air inlet assembly 4 comprises an air tank 41 and a gas permeable plate 43 connected to one side of the air tank 41, the air tank 41 is provided with a gas distribution plate 42, the gas distribution plate 42 and the gas permeable plate 43 are filled with a porous mesh structure sound insulation gas permeable layer 44, a plurality of gas distribution holes are uniformly arranged on the gas distribution plate 42, and a plurality of gas permeable holes are uniformly arranged on the gas permeable plate 43; the gas permeable plate 43 is used to communicate with the air inlet of the chain bucket conveyor; the gas source pipe assembly 3 comprises a gas source pipe 31 and a gas switch valve 32 arranged on the gas source pipe 31, one end of the gas source pipe 31 is communicated with a fire extinguishing gas cylinder, the other end is communicated with the air inlet of the air tank 41, the air inlet of the air tank 41 is arranged on the side of the gas distribution plate 42 away from the gas permeable plate 43, i.e. the air inlet of the air tank 41 is arranged between the top of the air tank 41 Figure 1 and the gas distribution plate 42, and is communicated with the gas source pipe 31.

[0036] The fire-fighting device for the chain bucket conveyor is connected to the tail of the chain bucket conveyor, i.e. the position close to the feeding port of the chain bucket conveyor, and the air permeable plate 43 is communicated with the air inlet of the chain bucket conveyor.

[0037] The fire-fighting device for the chain bucket conveyor according to the embodiment of the present application is provided with the air inlet assembly 4 of the multi-layer structure, the high-pressure and high-speed fire-fighting gas from the fire-fighting gas cylinder is uniformly flowed into the sound-absorbing air permeable layer 44 of the air inlet assembly 4 through the multiple air distribution holes on the air distribution plate 42 in the air chamber 41, the multiple porous net-like fiber structures of the sound-absorbing air permeable layer 44 are used to further uniformly distribute the air, the air flow rate and noise are reduced, then the fire-fighting gas is uniformly entered into the inside of the chain bucket conveyor equipment through the air permeable holes on the air permeable plate 43, the air inside the equipment is discharged, the self-ignition of the material is prevented or the self-ignited material is extinguished, the impact of the gas introduction on the equipment is reduced, the material splashing and scattering is avoided, and the problem of incomplete air discharge is solved.

[0038] Further, the pressure regulating valve 33 is arranged on the gas source pipeline 31, and the pressure regulating valve 33 can adjust the gas source pressure according to the actual needs. Specifically, the gas switch valve 32 can be an electromagnetic valve or a pneumatic butterfly valve, which is used to control the on-off of the gas source pipeline 31; the gas switch valve 32 and the pressure regulating valve 33 are installed in series in the middle part of the gas source pipeline 31, and the pressure regulating valve 33 is arranged on the outlet side of the gas switch valve 32.

[0039] Further, the air chamber 41 is in a circular truncated cone hollow structure, so that the air chamber 41 can store the fire-fighting gas (for example, carbon dioxide) and stabilize the gas pressure. At this time, the side wall of the air chamber 41 is provided with the air inlet hole communicated with the gas source pipeline 31, the bottom of the air chamber 41 is connected with the air permeable plate 43, the periphery of the air distribution plate 42 is installed on the inner side wall of the air chamber 41, the multiple hole structure of the air distribution plate 42 plays a role of throttling and air distribution; the sound-absorbing air permeable layer 44 is filled between the air distribution plate 42 and the air permeable plate 43, and the multiple porous net-like structure of the sound-absorbing air permeable layer 44 plays a role of air permeability, pressure reduction and sound-absorbing noise reduction. Specifically, the bottom of the air chamber 41 is welded with the air permeable plate 43, the air permeable plate 43 can be communicated with the air inlet of the chain bucket conveyor through the fastener, the plate body of the air permeable plate 43 is densely provided with the air permeable holes, the hole diameter of the air permeable holes should be smaller than the hole diameter of the air distribution holes, and the air permeable holes play a role of uniform air permeability.

[0040] Embodiment 2

[0041] The embodiment of the present application provides a chain bucket conveyor, Figure 5As shown, the chain conveyor assembly 1 and the fire-fighting device for chain conveyor described in embodiment 1 are connected by fasteners 45. The fasteners 45 are generally bolts, which are installed between the air permeable plate 43 and the air inlet of the chain conveyor assembly 1. The air permeable plate 43 and the housing of the chain conveyor assembly 1 are both provided with bolt holes for connecting the bolts.

[0042] Further, the chain conveyor assembly 1 of the embodiment includes a conveyor body 11 and a driving motor 12. The conveyor body 11 is provided with a material inlet 13, a material outlet 14 and an air inlet 15. The material inlet 13 is communicated with the material feeding assembly 2, and the material outlet 14 is communicated with the material discharging assembly 5. The driving motor 12 is used to drive the conveyor body 11 to convey materials. Specifically, the tail of the conveyor body 11 is horizontally arranged, and the head is arranged at a certain angle. The driving motor 12 is installed at the head of the conveyor body 11.

[0043] Specifically, the material feeding assembly 2 is arranged at the tail of the conveyor body 11, and the material discharging assembly 5 is arranged at the head of the conveyor body 11. The material inlet 13 is used to guide the materials to be transported into the conveyor body 11, and the material outlet 14 is used to guide the materials to be transported out of the conveyor body 11. The tail side wall of the conveyor body 11 is provided with the air inlet 15 to realize uniform introduction of fire-fighting gas. The air inlet 15 is connected with the air chamber 41 through the air permeable plate 43. The air chamber 41 is internally provided with a porous mesh structure of the sound-absorbing air permeable layer 44 and a gas distribution plate 42 with uniformly distributed gas distribution holes. The side wall of the air chamber 41 is provided with an air inlet hole, which is communicated with a fire-fighting gas source through a gas source pipeline 31 provided with a gas switch valve 32 and a pressure regulating valve 33.

[0044] Further, the material feeding assembly 2 of the embodiment includes a material feeding pipe 21 and a material switch valve 22 arranged on the material feeding pipe 21. One end of the material feeding pipe 21 is communicated with a material hopper, and the other end is communicated with the material inlet 13 of the conveyor body 11. The material switch valve 22 can be a pneumatic flashboard valve, which is arranged at the middle part of the material feeding pipe 21.

[0045] Further, the material discharging assembly 5 of the embodiment includes a material discharging pipe 51 and a material discharging switch valve 53 arranged on the material discharging pipe 51. One end of the material discharging pipe 51 is communicated with the material outlet 14 of the conveyor body 11, and the material outlet 14 is located at the bottom of the head of the conveyor body 11. The material discharging switch valve 53 can be a pneumatic flashboard valve.

[0046] Further, the discharge pipe 51 of the embodiment is further provided with a smoke temperature sensor 52, which is used to detect the temperature of the material and the smoke generated by combustion.

[0047] Further, the discharge pipe 51 of the embodiment is further provided with a smoke temperature sensor 52, which is used to detect the temperature of the material and the smoke generated by combustion.

[0048] When the smoke temperature sensor 52 alarms, the fire-fighting gas source is conducted through the gas switch valve 32 to guide the gas source pipeline 31, the fire-fighting gas is delivered into the air chamber 41, and is output into the sound insulation air layer 44 through the air distribution holes on the air distribution plate 42, and finally is input into the conveyor body 11 through the air permeable plate 43.

[0049] The drive motor 12 of the embodiment is installed at the head of the conveyor body 11 and is interlocked with the smoke temperature sensor 52, so as to control the operation of the conveyor body 11. The material switch valve 22 provided on the feeding pipe 21 is also interlocked with the smoke temperature sensor 52, so as to control the material to enter the conveyor body 11. The gas switch valve 32 and the pressure regulating valve 33 are provided on the gas source pipeline 31, the gas switch valve 32 controls the on-off of the gas source pipeline 31, and the pressure regulating valve 33 adjusts the gas source pressure according to the actual needs. The smoke temperature sensor 52 and the discharge switch valve 53 are provided on the discharge pipe 51, the smoke temperature sensor 52 can detect the temperature of the material and whether there is smoke generated by combustion, and is interlocked with the drive motor 12, the material switch valve 22, the gas switch valve 32 and the discharge switch valve 53, and the discharge switch valve 53 can control the material to be guided out of the conveyor body 11.

[0050] In the embodiment, when the smoke temperature sensor 52 does not alarm, the driving motor 12 works, the material switch valve 22 and the discharge switch valve 53 are opened, and the gas switch valve 32 is closed; when the smoke temperature sensor 52 alarms, the driving motor 12 stops working, the material switch valve 22 and the discharge switch valve 53 are closed, and the gas switch valve 32 is opened.

[0051] The gas switch valve 32 can be set to open and close at a time, so as to control the gas amount of the fire-fighting gas entering the device each time.

[0052] The chain bucket conveyor of the embodiment of the utility model can guide the fire-fighting gas into the sound-attenuating and air-permeable layer 44 uniformly and quickly through the multiple air distribution holes on the air distribution plate 42, and after pressure reduction and sound attenuation and noise reduction, the fire-fighting gas can be input into the device through the air-permeable plate 43, so that the direct impact of the airflow on the device and the material can be reduced; and the air is only introduced at the tail of the conveyor body 11, so that the airflow disturbance in the device can be avoided, the air in the device can be completely discharged, and the material can be prevented from self-igniting or extinguishing the material that has self-ignited; meanwhile, the opening and closing time of the gas switch valve 32 is set, so as to control the gas amount of the fire-fighting gas entering the device each time.

[0053] The above embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the patent range of the utility model. It should be pointed out that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the utility model, and these belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A fire extinguishing device for an en masse conveyor, characterized by comprising: The air source pipe assembly and the air inlet assembly are provided. The air inlet assembly comprises an air chamber and a gas permeable plate connected to one side of the air chamber. The air chamber is provided with a gas distribution plate.

2. A fire extinguishing device for an en masse conveyor as defined in claim 1, characterized in that The gas distribution plate and the gas permeable plate are filled with a porous mesh structure of the sound-absorbing and gas-permeable layer.

3. A fire extinguishing device for an en masse conveyor as defined in claim 1, characterized in that The gas distribution plate is uniformly provided with a plurality of gas distribution holes.

4. A chain and bucket conveyor, characterized in that The gas permeable plate is uniformly provided with a plurality of gas permeable holes.

5. A bucket conveyor as claimed in claim 4, characterised in that, The gas permeable plate is used to communicate with the air inlet of the chain bucket conveyor.

6. A bucket conveyor as claimed in claim 5, characterised in that, The air source pipe assembly comprises an air source pipe and a gas switch valve arranged on the air source pipe.

7. A bucket conveyor as claimed in claim 6, characterised in that, One end of the air source pipe is communicated with the fire-fighting gas cylinder.

8. A bucket conveyor as claimed in claim 7, characterised in that, The other end of the air source pipe is communicated with the air inlet of the air chamber.

9. A bucket conveyor as claimed in claim 8, characterised in that, The air inlet of the air chamber is arranged on the side of the gas distribution plate away from the gas permeable plate.

10. A bucket conveyor as claimed in claim 9, characterised in that, The air source pipe is further provided with a pressure regulating valve. The air chamber has a hollow structure of a circular truncated cone. The chain bucket conveyor assembly and the fire-fighting device for the chain bucket conveyor are provided. The gas permeable plate is connected to the chain bucket conveyor assembly through fasteners. The chain bucket conveyor assembly comprises a conveyor body and a driving motor. The conveyor body is provided with a material inlet, a material outlet and an air inlet. The material inlet is communicated with the material feeding assembly. The material outlet is communicated with the material discharging assembly. The driving motor is used to drive the conveyor body to convey materials. The material feeding assembly comprises a material feeding pipe and a material switch valve arranged on the material feeding pipe. One end of the material feeding pipe is communicated with a material hopper. The other end of the material feeding pipe is communicated with the material inlet. The material discharging assembly comprises a material discharging pipe and a material discharging switch valve arranged on the material discharging pipe. One end of the material discharging pipe is communicated with the material outlet. The material discharging pipe is further provided with a smoke temperature sensor. The smoke temperature sensor is used to detect the temperature of the materials and the smoke generated by combustion. The material discharging pipe is further communicated with a venting assembly. The venting assembly comprises a venting pipe and a check valve arranged on the venting pipe. The smoke temperature sensor is interlocked with the driving motor, the material switch valve, the material discharging switch valve and the gas switch valve.

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