Fire preventing and extinguishing inhibitor material underground storage and conveying method and equipment thereof

Abstract

The invention discloses a fire preventing and extinguishing inhibitor material underground storage and conveying method and equipment thereof, and relates to the field of underground fire preventing and extinguishing solution configuration.When the fire preventing and extinguishing inhibitor material underground storage and conveying method and equipment are used, inhibitor solid materials are conveyed to a mixed material storage bin, water is injected according to the proportion, inhibitor mixed liquid is formed, and the inhibitor mixed liquid is stored in a pre-preparation unit for a long time for standby application; during spraying, the stored inhibitor mixed solution can be pumped into the preparation storage tank, water is added into the preparation storage tank according to the proportion, and a finished inhibitor solution directly applied to fire prevention and extinguishing spraying is formed. The problems that in the stopping agent preparation process in the prior art, due to the fact that the water absorption performance of materials is high, the solution proportion concentration cannot be controlled, and circulation of the materials among all the units is not changed are solved. Accurate proportioning of the stopping agent solution is achieved, production safety is guaranteed, the solution preparation process is optimized, the situations such as material waste are avoided, and the stopping agent preparation device is higher in safety and popularization value.

Description

Technical Field

[0001] The invention relates to the field of storage and transportation of fire-fighting premixes, and in particular to an underground storage and transportation method and equipment for fire-fighting inhibitor materials. Background Art

[0002] The fire prevention and extinguishing means for the coal is mainly spraying the inhibitor. The inhibitor solution is made by adding an appropriate amount of water to the granular or flaky solid inhibitor according to the concentration requirements to form an inhibitor solution, which is sprayed to the coal through an inhibitor pump. The inhibitor configuration means in the prior art usually temporarily stores the inhibitor granules in the silo, and when it is needed to be prepared, the quantitative granules are lifted to the preparation tank, and water is added to the preparation tank and stirred to form an inhibitor solution with a certain concentration. Specifically, the Chinese patent CN214635642U discloses an automatic liquid dispensing device for the inhibitor fire prevention and extinguishing system. Although the device can realize the preparation of the inhibitor solution to a certain extent, it does not solve the problem of storing the inhibitor in the coal mine and using mechanical equipment to transport it. The inhibitor has extremely strong water absorption. The existing inhibitor storage method and technology and the existing equipment cannot realize the automatic transportation of the inhibitor with water absorption and deliquescence phenomenon using mechanical equipment, as well as the preparation of the inhibitor solution. The existing equipment has significant disadvantages such as poor applicability and high failure rate during actual use.

[0003] Specifically, since the granular materials used to prepare the inhibitor are usually magnesium chloride, calcium chloride and improvers, when the materials are stored, that is, when the above materials are temporarily stored in the silo, their water absorption will cause part of the granular materials on the surface of the inhibitor in the silo to absorb water and deliquesce. If the storage time exceeds one day, part of the inhibitor stored in the silo will absorb water and deliquesce. The deliquesced inhibitor slurry is mixed with the non-deliquesced inhibitor to form a mixture of slurry and solid particles with a certain shaping effect. Its physical state is similar to the water and sand mixture used for sand sculpture. The inhibitor at the bottom of the silo begins to clump under the dual effects of deliquescence and pressure, causing the inhibitor to lose fluidity, that is, the fluidity of the solid particles, similar to the fluidity of dry sand. Loading becomes difficult or even impossible, and in severe cases, it may even cause equipment damage.

[0004] In actual use, due to the large amount of inhibitors used underground, it is usually necessary to pre-store the fire prevention and extinguishing inhibitors needed by multiple production teams in the coal mine at one time. Then, when needed, the inhibitors in the storage bin are transported to the preparation tank, and water is added according to the ratio requirements to prepare a sprayable inhibitor solution. Since the water absorption of the inhibitor is too high, and the dust prevention and dust reduction requirements in coal mines require 24-hour uninterrupted spray dust reduction, the water content in the air is extremely high, which requires extremely high requirements for the sealing of the storage premix silo and the conveying equipment. However, the storage silo and the conveying equipment cannot be completely sealed due to their own characteristics. In this case, the solid material absorbs water and deliquesces. In addition, the equipment for conveying materials into the preparation tank is usually an auger-type conveying equipment, and the auger conveying is mainly a conveying method for dry materials. For this kind of wet mixture, on the one hand, it makes it difficult to lift the material, or even impossible to feed the material. On the other hand, even if some materials can be transported, because the wet mixture has been shaped and agglomerated, and the dissolution time of the agglomerated inhibitor is too long, the detection deviation of the concentration of the inhibitor solution is large, and the accuracy of the solution ratio cannot be guaranteed. In other words, the concentration of the inhibitor solution is uncontrollable. Too thin will lead to low fire prevention and extinguishing effect, which is not conducive to production safety, and too high will easily block the pipe. Therefore, there is currently a lack of corresponding solutions for the underground storage and transportation of inhibitor materials, and the only way is to manually load and prepare the materials, which causes a huge waste of productivity. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a method and equipment for underground storage and transportation of fire-fighting inhibitor materials which has a simple structure, can preserve the inhibitor for a long time in the extremely humid environment of a coal mine, accelerate the dissolution rate of the inhibitor, improve work efficiency, and can achieve precise proportioning of the inhibitor solution and is easy to use.

[0006] The underground storage and transportation equipment for fire-fighting and chemical-retardant materials of the present invention comprises a mixed material storage bin and a transportation system.

[0007] The mixing storage bin is a bin body with a granular material inlet disposed on the top, and a mechanical stirring unit is disposed in the mixing storage bin; The mechanical stirring unit is used to improve the fluidity of the inhibitor mixture during the preparation of the inhibitor mixture and when it is transported to subsequent work sections; A discharge port is provided at the bottom of the mixing storage bin, and the discharge port is connected to a conveying system.

[0008] The conveying system includes a mixed liquid conveying pipeline and a conveying pump. A discharge valve is arranged on the mixed liquid conveying pipeline. The pipeline at the rear end of the discharge valve is connected to the conveying pump. A water injection port is connected to the conveying pipeline through a tee to connect to an external water source.

[0009] The underground storage and transportation method of the fire extinguishing and chemical inhibitor material of the present invention is: According to the amount of inhibitor used in a fixed section, a certain amount of solid inhibitor material is transported to the mixing storage bin, and water is injected according to the proportion to form an inhibitor mixed liquid, which is then stored in the pre-mixing unit for a long time for use; When in use, the stored inhibitor mixture can be delivered to the configuration tank through the delivery pipeline using a delivery pump. Water is added to the configuration tank in proportion to form a finished inhibitor solution that is directly used in fire protection and extinguishing spraying.

[0010] The effect achieved by this is that after the pellets enter the mixing storage bin, the water addition is closed, and a mixed liquid of the inhibitor and water with a certain fluidity is directly formed, which can be transported by a delivery pump; After the solid granular materials are loaded in batches, water is added to form a large amount of inhibitor mixture, which is stored in the pre-dispensing unit for a long time and ready for use. Since the amount of solution required for each shift or work section is different, the inhibitor mixture can be pumped into the configuration tank in a selected amount during the duty period of each shift, and then water is added in proportion to prepare the finished inhibitor solution required by the duty shift, which is directly used for fire prevention and extinguishing spraying.

[0011] The beneficial effects of the present invention are as follows: the present invention solves the problems in the prior art of the uncontrollable solution ratio concentration and inconvenient material transfer between units due to the strong water absorption of the material during the preparation process of the inhibitor. The present invention realizes the precise proportion of the inhibitor solution, ensures production safety, optimizes the solution preparation process, avoids material waste, and has greater safety promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of an underground storage and transportation device for fire extinguishing and chemical inhibitor materials according to the present invention; Reference numerals: 1-Lifting feeding mechanism 2-Mixed material storage bin 3-Configuration storage tank 21- Mechanical stirring unit 22- Discharge valve 23- Delivery pump 24- Mixed liquid delivery pipeline The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0013] The underground storage and transportation equipment for fire-fighting and chemical-retardant materials described in the present invention comprises a mixed material storage bin and a transportation system.

[0014] The mixing storage bin is a bin body with a granular material inlet disposed on the top, and a mechanical stirring unit is disposed in the mixing storage bin; The mechanical stirring unit is used to improve the fluidity of the inhibitor mixture during the preparation of the inhibitor mixture and when it is transported to subsequent work sections; A discharge port is provided at the bottom of the mixing storage bin, and the discharge port is connected to a conveying system.

[0015] The conveying system includes a mixed liquid conveying pipeline and a conveying pump. A discharge valve is arranged on the mixed liquid conveying pipeline. The pipeline at the rear end of the discharge valve is connected to the conveying pump. A water injection port is connected to the conveying pipeline through a tee to connect to an external water source.

[0016] Furthermore, the mixed material storage bin 2 is connected to the configuration storage tank 3 via the mixed liquid delivery pipeline 24, and the inhibitor mixed liquid is pumped into the configuration storage tank 3 via the delivery pump 23; the configuration storage tank 3 is also provided with a water inlet.

[0017] The effect achieved by this is that the delivery pump 23 pumps the inhibitor mixture in the mixed material storage bin 2 into the configuration storage tank 3, and after the secondary water addition, an inhibitor solution with appropriate concentration is formed, which is directly used for fire extinguishing spraying.

[0018] The method for underground storage and transportation of fire extinguishing and chemical inhibitor materials described in the present invention is as follows: According to the dosage of the inhibitor in a fixed section, a fixed amount of solid inhibitor material is transported to the mixing storage bin, and water is injected according to the proportion to form an inhibitor mixed liquid, which is then stored in the pre-mixing unit for a long time and ready for use.

[0019] When in use, the stored inhibitor mixture can be pumped into the configuration storage tank, and water is added to the configuration storage tank in proportion to form a finished inhibitor solution that is directly used in fire protection and extinguishing spraying.

[0020] Furthermore, in the inhibitor mixture, the mass ratio of the inhibitor to water is 4-6:1; in the finished inhibitor solution, the mass ratio of the inhibitor mixture to water is 1:4-8.

[0021] Furthermore, a suspending agent is added to the inhibitor mixture.

[0022] Preferably, the mass of the suspension is between 1% and 3% of the mass of the inhibitor mixture.

[0023] The effect achieved by this is that after the pellets enter the mixing storage bin, water is added to directly form a mixed liquid with a certain fluidity, which can be transported by a delivery pump. After the solid granular materials are loaded in batches, water is added to form a large amount of inhibitor mixture, which is stored in the pre-dispensing unit for a long time and ready for use. Since the amount of solution required for each shift or work section is different, the inhibitor mixture can be pumped into the configuration tank in a selected amount during the duty period of each shift, and then water is added in proportion to prepare the finished inhibitor solution required by the duty shift, which is directly used for fire prevention and extinguishing spraying.

[0024] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached 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 are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims.

[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An underground storage and transportation equipment for fire extinguishing and chemical inhibitor materials, comprising a mixed material storage bin, wherein the mixed material storage bin is provided with a granular material inlet and a water injection port, and is characterized in that: A mechanical stirring unit is provided in the mixing storage bin; A discharge port is provided at the bottom of the mixing storage bin, and the discharge port is connected to a mixed liquid delivery pipeline. A discharge valve is provided on the mixed liquid delivery pipeline, and a pipeline at the rear end of the discharge valve is connected to a delivery pump.

2. The underground storage and transportation equipment for fire extinguishing and chemical retardant materials according to claim 1 is characterized in that: The mixed material storage bin is connected to the configuration storage tank via a mixed liquid delivery pipeline, and the inhibitor mixed liquid is pumped into the configuration storage tank via the delivery pump; the configuration storage tank is also provided with a water inlet.

3. A method for storing and transporting fire extinguishing and chemical inhibitor materials underground, characterized in that: The solid material of the inhibitor is transported to the mixing storage bin, and water is added according to the proportion to form an inhibitor mixed liquid, which is then stored in the mixing storage bin for a long time for use; When in use, the stored inhibitor mixture can be delivered to the configuration storage tank through the delivery pipeline using a delivery pump.

4. The method for storing and transporting fire extinguishing and chemical retardant materials underground according to claim 1, characterized in that: In the inhibitor mixture, the mass ratio of the inhibitor to water is 4-6:

1.

5. The method for underground storage and transportation of fire extinguishing and chemical inhibitor materials according to claim 1, characterized in that: A suspending agent is also added into the inhibitor mixed liquid.

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