Sponge for extinguishing kindling and preparation process thereof

Abstract

The invention relates to the field of fire-fighting accessories, in particular to a sponge for extinguishing kindling and a preparation process thereof.The sponge comprises an artificial sponge body, a water locking surface and a water splashing surface are formed on the outer surface of the artificial sponge body, and the surface density of the water locking surface is larger than that of the water splashing surface. The process comprises the following steps: step 1, preparing an artificial sponge raw material, and cutting the artificial sponge raw material into a required pretreatment shape; 2, part of the outer surface of the artificial sponge body is heated, the surface of the artificial sponge body is heated to form a water locking surface, and the other outer surface of the artificial sponge body forms a water splashing surface; and step 3, cooling to form a finished product. Due to the high-density design of the water locking surface, the sponge can stably keep water, and water loss or drifting caused by swinging or wind power influence is not prone to occurring. And meanwhile, the artificial sponge is formed by refining rubber, so that the artificial sponge has the characteristics of environmental protection, flammability and recyclability.

Description

Technical Field

[0001] The invention relates to the field of fire-fighting accessories, in particular to a sponge for extinguishing fire and a preparation process thereof. Background Art

[0002] Generally, water bombs are dropped from helicopters to put out forest fires. These water bombs are limited in the amount of water they carry using buckets. In addition, although some people have used soft foam PU square blocks in the past, drilling a large number of air holes on the square blocks to absorb water and splash water when pressed, the helicopter has a limited amount of water to carry along the bucket. In addition, the swing during flight and the weather and wind at the time greatly reduce the accuracy of the drop points. In addition, the water will be scattered by the wind, and the loss of water is very high, which makes the range and efficiency of the drop points very limited. If chemical foam is used, the air drop will be affected by the wind direction and temperature at the time, and the effect is also average.

[0003] Soft foam PU square has limited water absorption capacity, and requires huge pressure to squeeze out the water, so the splash force and range when extinguishing the fire are not ideal, and the processing cost of a piece of soft foam PU is expensive. A further problem is that soft foam PU will produce toxins when burning, which is not environmentally friendly. Summary of the invention

[0004] In order to solve the above problems, the invention provides a sponge for extinguishing fire and its preparation process. Due to the high-density design of the water-locking surface, the sponge can stably retain moisture and is not easily lost or dispersed due to swinging or wind. At the same time, the artificial sponge is refined from rubber, so it has the characteristics of environmental protection, combustibility and recyclability.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the invention is: a sponge for extinguishing fire, including an artificial sponge body, the outer surface of the artificial sponge body is formed with a water-locking surface and a water-splashing surface, and the surface density of the water-locking surface is greater than the surface density of the water-splashing surface.

[0006] Furthermore, the area ratio of the water-locking surface to the water-splashing surface is (1-2):(2-4).

[0007] Furthermore, the artificial sponge body is a spherical structure, a plurality of circles of water-locking surfaces are arranged on the spherical structure, and a water-splashing surface is formed between adjacent water-locking surfaces.

[0008] Furthermore, the artificial sponge body is a spherical structure, a threaded water-locking surface is provided on the spherical structure, and the rest of the outer surface of the spherical structure constitutes a water-splashing surface.

[0009] Furthermore, the artificial sponge body is a block structure, the water-locking surface is formed on the top surface and the bottom surface of the block structure, and the remaining outer surface portion of the block structure constitutes the splashing surface.

[0010] A preparation process of a sponge for extinguishing fire, comprising the following steps:

[0011] Step 1: Step 1, prepare the artificial sponge raw material and cut it into the required pre-processed shape;

[0012] Step 2, heating a portion of the outer surface of the artificial sponge body to form a water-locking surface, and the remaining outer surface of the artificial sponge body forms a water-splashing surface;

[0013] Step 3: Cooling to form the finished product.

[0014] Furthermore, the specific steps of step 2 are: placing the artificial sponge body pretreated in step 1 inside the mold, and heating the surface of the artificial sponge body by contacting the heating component inside the mold to form a water-locking surface 11 on the surface of the artificial sponge body; the non-heating component inside the mold does not contact the remaining outer surface of the artificial sponge body, so that it forms a water-splashing surface.

[0015] Further, in step 2, the heating temperature of the mold is 170-180° C., and the heating time is 100-180 seconds.

[0016] The beneficial effects of the invention are:

[0017] 1. The artificial sponge body of the present application, after the surface heating process, can accurately deliver the carried water to the target point. During the throwing process, due to the high-density design of the water-locking surface, the sponge can stably retain moisture and is not easily lost or dispersed due to swinging or wind. Therefore, each time the water is thrown, almost 100% of it can be sprinkled on the target fire, which greatly improves the efficiency of fire extinguishing and relatively reduces the number of times water bombs are thrown. Most importantly, this ability of precise delivery has a significant improvement in the rescue timeliness for controlling the fire and extinguishing the fire, and has great practical value.

[0018] 2. Artificial sponge is made from rubber, so it is environmentally friendly, combustible and recyclable. Compared with traditional soft foam PU square, it has obvious environmental advantages. Soft foam PU will produce toxins when burned, which is not environmentally friendly, while artificial sponge can avoid this problem and is more in line with modern environmental protection concepts.

[0019] 3. The artificial sponge body has the characteristics of compressible storage, which makes it very convenient for standby, and can be quickly used and transported when needed. This convenience is of particular significance for emergency rescue, forest fire fighting and other scenes, which can ensure that rescuers can deliver fire-fighting equipment to the scene in the shortest time, thereby effectively controlling the fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the structure of the artificial sponge body before treatment in Example 1.

[0021] Figure 2 It is a schematic diagram of the artificial sponge body in Example 1 before being placed into the mold.

[0022] Figure 3 It is a schematic diagram of the artificial sponge body after being placed into the mold in Example 1.

[0023] Figure 4 Schematic diagram of the structure of the artificial sponge body after treatment in Example 1.

[0024] Figure 5 Schematic diagram of the structure of the artificial sponge body before treatment in Example 3.

[0025] Figure 6 1 is a schematic diagram of placing the artificial sponge body into a mold in Example 3.

[0026] Figure 7 Schematic diagram of the structure of the artificial sponge body after treatment in Example 3.

[0027] Figure 8 It is a schematic diagram of the splashing principle of the treated artificial sponge body.

[0028] Description of the accompanying drawings: 10. artificial sponge body; 11. water-locking surface; 12. water-splashing surface; 2. mold; 21. heating component; 22. reserved space. DETAILED DESCRIPTION

[0029] See also Figure 1-8 As shown, the invention relates to a sponge for extinguishing fire, including an artificial sponge body 10, wherein the artificial sponge body 10 itself has a plurality of water storage holes, and the outer surface of the artificial sponge body 10 is provided with a water-locking surface 11 formed by heating and a water-splashing surface 12 that has not been heated, wherein the surface density of the water-locking surface 11 is greater than the surface density of the water-splashing surface 12.

[0030] In general, by increasing the surface density of the water-locking surface 11, the water-locking performance of the sponge is significantly enhanced. The stored water is not easy to seep out, ensuring the water retention capacity of the sponge during storage and transportation. At the same time, the high-density water-locking surface 11 helps to store water more concentratedly inside the sponge. This concentrated storage allows the sponge to release water more effectively from the splashing surface 12 when it is placed.

[0031] Moreover, when the sponge is placed at high altitude, due to the high-density design of the water-locking surface 11, the sponge is not easily affected by swinging or wind, causing water to be lost or scattered. This ensures that the sponge can stably place the stored water at the target location, improving the accuracy and reliability of use.

[0032] Combined with the above-mentioned water-locking performance and stability, the sponge can accurately deliver stored water to the target location where cooling or fire extinguishing is needed. This is of particular significance for emergency rescue, forest fire fighting and other scenarios, and can quickly and effectively control the fire or reduce the temperature.

[0033] Furthermore, the area ratio of the water-locking surface 11 to the water-splashing surface 12 is (1-2):(2-4).

[0034] Furthermore, in the present application, the artificial sponge body 10 can be designed as a spherical structure (described in detail in Example 1 below), on which a plurality of circles of water-locking surfaces 11 are provided, and between adjacent water-locking surfaces 11 a splashing surface 12 is formed.

[0035] Furthermore, in the present application, the artificial sponge body 10 can also be designed as a spherical structure, on which a threaded water-locking surface 11 is provided (in fact, this scheme is similar to Example 1 and will not be discussed in detail), and the rest of the outer surface of the spherical structure constitutes a splashing surface 12.

[0036] Furthermore, in the present application, the artificial sponge body 10 can also be designed as a block structure (described in detail in Examples 2-3 below), the water-locking surface 11 is formed on the top and bottom surfaces of the block structure, and the remaining outer surface portion of the block structure constitutes the splashing surface 12.

[0037] The preparation process of the artificial sponge body 10 is discussed below:

[0038] A preparation process of a sponge for extinguishing fire, comprising the following steps:

[0039] Step 1: Prepare the artificial sponge raw material and cut it into the required pre-processed shape;

[0040] Step 2, heating a portion of the outer surface of the artificial sponge body 10, and heating the surface of the artificial sponge body 10 to form a water-locking surface 11, and the remaining outer surface of the artificial sponge body 10 forms a water-splashing surface 12;

[0041] Step 3: Cooling to form the finished product.

[0042] To further discuss, the specific steps of step 2 are: placing the artificial sponge body 10 pre-treated in step 1 inside the mold 2, and heating the surface of the artificial sponge body 10 by contacting the heating component 21 inside the mold 2, so that a water-locking surface 11 is formed on the surface of the artificial sponge body 10; the non-heating component inside the mold 2 does not contact the remaining outer surface of the artificial sponge body 10, so that a water-splashing surface 12 is formed.

[0043] Further discussed, in step 2, the heating temperature of the mold 2 is 170-180° C., and the heating time is 100-180 seconds.

[0044] According to the above preparation process example 1:

[0045] Step S1: Prepare the artificial sponge body 10 and pre-treat it; Raw material selection: Select the artificial sponge raw material with excellent water absorption and durability to ensure that the sponge has sufficient strength and stability to meet the requirements of subsequent processing and use. Cutting: Use a precise spherical cutting mold 2 to cut the artificial sponge. The sphere diameter is set to 20 cm to ensure that the finished product is spherical and the size meets the design requirements. The cutting process must maintain accuracy to avoid sponge shape deformation or size error. (See Figure 1 )

[0046] Pretreatment: Wash and dry the cut artificial sponge. Use clean water or a special detergent to remove impurities and oil stains on the surface of the sponge, and then dry it to ensure that there is no moisture inside and on the surface of the sponge.

[0047] Step S2: Design and prepare the heating mold 2 (see Figure 2-3 )

[0048] Design of mold 2: According to the size of the spherical sponge and the ratio (1:1) of the water-locking surface 11 to the water-splashing surface 12, a special heating mold 2 is designed. The inside of the mold 2 is smooth and the heating components 21 are evenly distributed to ensure that the sponge is evenly heated during the heating process.

[0049] Preparation of mold 2: Preheating treatment is required for heating mold 2 to ensure that the temperature of mold 2 reaches a preset value. At the same time, check whether the heating component 21 and non-heating components of mold 2 are working properly to avoid malfunctions during the heating process.

[0050] Step S21: Place the sponge body and heat it (see Figure 3 )

[0051] Place the sponge: Place the pre-treated spherical artificial sponge body 10 inside the mold 2, ensuring that it is in close contact with the heating component 21 of the mold 2. At the same time, the non-heating component inside the mold 2 does not contact the remaining outer surface of the spherical artificial sponge body 10 (a reserved space 22 is provided) to form a splashing surface 12.

[0052] Heating treatment: Set the heating temperature of mold 2 to 180°C and control the heating time to 180 seconds. During the heating process, check the heating of the sponge regularly to ensure that the heating is uniform and reaches the preset water-locking surface 11 density.

[0053] Step S3: Cooling

[0054] Natural cooling: After the heating treatment is completed, the mold 2 and the artificial sponge body 10 are naturally cooled to room temperature or close to room temperature. The integrity of the mold 2 and the sponge must be maintained during the cooling process to avoid deformation or damage.

[0055] Step S4: Demolding (see Figure 4 )

[0056] After cooling, the artificial sponge is taken out from the mold 2. At this time, the water-locking surface 11 has been formed, and the surface density is greater than the unheated water-splashing surface 12.

[0057] Step S5: Subsequent processing and testing

[0058] Example 2: Preparation process of artificial sponge body 10 (block structure)

[0059] Step S1: Preparation of artificial sponge body 10 and pretreatment

[0060] Raw material selection: Select artificial sponge raw materials with excellent water absorption and durability, and ensure that the sponge texture is uniform and has no obvious defects.

[0061] Cutting: Use a precise cube cutting die 2 to cut the artificial sponge. The cube size is set to length × width × height = 20 cm × 20 cm × 12 cm to ensure that the finished product size meets the design requirements. The cutting process must maintain accuracy to avoid sponge shape deformation or size error.

[0062] Pretreatment: Wash and dry the cut artificial sponge. Use clean water or a special detergent to remove impurities and oil stains on the surface of the sponge, and then dry it to ensure that there is no moisture inside and on the surface of the sponge.

[0063] Step S2: Design and prepare heating mold 2

[0064] Design of mold 2: According to the size of the block sponge and the layout requirements of the water-locking surface 11 and the water-splashing surface 12 (the water-locking surface 11 is formed on the top and bottom surfaces), a dedicated heating mold 2 is designed. A heating component 21 is provided inside the mold 2, which is in contact only with the top and bottom surfaces of the block sponge to ensure that only these two parts form the water-locking surface 11 during the heating process.

[0065] Preparation of mold 2: Preheating treatment is required for heating mold 2 to ensure that the temperature of mold 2 reaches a preset value. At the same time, check whether the heating component 21 and non-heating components of mold 2 are working properly to avoid malfunctions during the heating process.

[0066] Step S21: Place the sponge body and heat it

[0067] Place the sponge: Place the pre-treated block artificial sponge body 10 inside the mold 2, ensuring that the top and bottom surfaces of the sponge are in close contact with the heating component 21 of the mold 2. At the same time, the non-heating components inside the mold 2 are not in contact with the remaining outer surfaces of the block sponge (i.e., the side surfaces and the unheated top / bottom edge portions) to form a splashing surface 12.

[0068] Heating treatment: Set the heating temperature of mold 2 to 175°C (considering that the cube structure may dissipate heat more easily than the sphere, a slightly lower heating temperature is selected to maintain heating uniformity), and the heating time is controlled within 150 seconds. During the heating process, the heating condition of the sponge needs to be checked regularly to ensure that the heating is uniform and the preset water-locking surface density is reached.

[0069] Step S3: Cooling

[0070] Natural cooling: After the heating treatment is completed, the mold 2 and the artificial sponge body 10 are naturally cooled to room temperature or close to room temperature. The integrity of the mold 2 and the sponge must be maintained during the cooling process to avoid deformation or damage.

[0071] Step S4: Demolding

[0072] After cooling, the artificial sponge is taken out of the mold 2. At this point, the water-locking surfaces 11 on the top and bottom surfaces have been formed, and the surface density is greater than that of the unheated splashing surface 12. Check the appearance and performance of the sponge to ensure that it meets the design requirements.

[0073] Step S5: Subsequent processing and testing

[0074] Finishing: The artificial sponge body 10 after demoulding is subjected to necessary finishing, such as removing burrs, grinding corners, etc., to improve its appearance quality and performance. Special attention should be paid to protecting the water-locking surface 11 from damage.

[0075] The following discusses the application scenarios of the finished product in Example 2

[0076] 1. Application scenarios: The artificial sponge body 10 prepared in Example 2 is particularly suitable for the following application scenarios due to its block structure and the layout design of the water-locking surface 11 and the water-splashing surface 12:

[0077] That is, it is necessary to extinguish the fire around the fire source, while there is no need or less need to directly splash water above or on the top of the fire source. For example, in a fire on a tanker truck or oil depot, the fire source is mainly concentrated on the side or bottom of the tank, and the top is blocked by the tank cover or other structures, so direct splashing water may not be effective or may pose a safety risk.

[0078] In this scenario, the artificial sponge body 10 in Example 2 can be used to extinguish fire very effectively. Its block structure allows the sponge to be stably placed around the fire source, while the design of the water-locking surface 11 and the water-splashing surface 12 ensures that the water can be accurately released to the side or bottom of the fire source, achieving directional water splashing and improving the fire extinguishing efficiency.

[0079] 2. Working Principle: The working principle of the artificial sponge body 10 in Embodiment 2 in this fire extinguishing scenario is as follows:

[0080] The water-locking surface 11 is heated to increase its density, thereby enhancing the water-locking performance of the sponge. During storage and transportation, the sponge can retain sufficient moisture and will not be easily lost due to external forces.

[0081] Directional splashing of the splashing surface 12: The outer side of the block body constitutes the splashing surface 12. When the sponge is subjected to external force (such as impact force when it is thrown), these splashing surfaces 12 that have not been heated will release water first. Since the design of the splashing surface 12 is directional, the water can be sprayed more concentratedly to the side or bottom of the fire source, achieving directional fire extinguishing around the fire source.

[0082] The internal and external pressure difference enhances the splashing force: When the water inside the sponge is subjected to external pressure, an internal and external pressure difference will be generated due to the difference between the high density of the water-locking surface 11 and the low density of the splashing surface 12. This pressure difference will enhance the splashing force of the splashing surface 12, allowing the water to be more powerfully sprayed to the fire source, thereby improving the fire extinguishing effect.

[0083] The top water-locking surface 11 avoids ineffective water splashing: The top is provided with a water-locking surface 11, which can avoid or reduce the water splashing upwards when splashing. This is particularly important in scenarios such as fires in oil tankers or oil depots, because there may be wires, equipment, etc. on the top, and direct water splashing may cause short circuits or other safety risks.

[0084] Example 3: See Figure 5-8 , Preparation process of artificial sponge body 10 (grid-shaped top water-locking surface 11)

[0085] 1. Preparation process steps

[0086] Step S1: See Figure 5 , prepare the artificial sponge body 10 and pre-treat

[0087] Raw material selection: Select artificial sponge raw materials with excellent water absorption and durability, and ensure that the sponge texture is uniform and has no obvious defects.

[0088] Cutting: Use precise cutting equipment to cut the artificial sponge into a predetermined cube shape. The size is set to length × width × height = 20cm × 20cm × 12cm (adjust according to actual needs to ensure that the finished product size meets the design requirements). The cutting process must maintain high precision to avoid sponge shape deformation or dimensional error.

[0089] Preprocessing:

[0090] Clean the cut artificial sponge and use clean water or special detergent to remove impurities and oil stains on the surface of the sponge.

[0091] Dry the sponge after cleaning to ensure that there is no moisture left inside or on the surface of the sponge.

[0092] Step S2: Design and prepare heating mold 2

[0093] Design of mold 2: According to the size of the square sponge and the layout requirements of the water-locking surface 11 and the water-splashing surface 12 (the bottom is a continuous water-locking surface 11, and the top is a grid-shaped water-locking surface 11), a dedicated heating mold 2 is designed. A heating component 21 is set inside the mold 2, the bottom and side heating components 21 are continuously distributed, and the top heating components 21 are arranged in a grid form, with a grid spacing of 2 cm (adjusted according to actual needs).

[0094] Preparation of mold 2: Preheating treatment is required for heating mold 2 to ensure that the temperature of mold 2 reaches the preset value. Check whether the heating component 21 and non-heating components of mold 2 are working properly to avoid malfunctions during the heating process.

[0095] Step S3: See Figure 6 , place the sponge body and heat

[0096] Place the sponge: Place the pre-treated block-shaped artificial sponge body 10 inside the mold 2, ensuring that the bottom of the sponge is in close contact with the heating component 21 of the mold 2, and the top grid-shaped heating component 21 is in contact with a portion of the top area of ​​the artificial sponge body 10. The non-heating components inside the mold 2 are not in contact with the remaining outer surface of the block-shaped sponge (i.e., the top area and side edge portions that are not in contact with the heating component 21) to form a splashing surface 12.

[0097] Heating treatment: Set the heating temperature of mold 2 to 180°C (considering that the grid-like top design may require a slightly higher temperature to ensure the water-locking effect), and control the heating time between 120 seconds and 150 seconds (adjusted according to the sponge thickness and heating effect).

[0098] During the heating process, the sponge needs to be checked regularly to ensure that it is heated evenly and reaches the preset water-locking surface density.

[0099] Step S4: See Figure 7 , cooling and demoulding

[0100] Natural cooling: After the heating treatment is completed, the mold 2 and the artificial sponge body 10 are naturally cooled to room temperature or close to room temperature. The integrity of the mold 2 and the sponge must be maintained during the cooling process to avoid deformation or damage.

[0101] Demolding: After cooling, the artificial sponge is removed from the mold 2. At this point, the continuous water-locking surface 11 at the bottom and sides and the grid-like water-locking surface 11 at the top have been formed. Check the appearance and performance of the sponge to ensure that it meets the design requirements.

[0102] Step 5: Post-processing and testing

[0103] 2. Specific application scenarios

[0104] The artificial sponge body 10 prepared in Example 3 is particularly suitable for scenarios where fires need to be extinguished both on the side and above the fire source, such as:

[0105] Warehouse fire fighting: In a warehouse fire, the fire may spread to the sides and top of the goods at the same time. Using the sponge of Example 3, it is possible to not only perform directional water splashing on the sides to extinguish the fire, but also release part of the water through the grid-like water-locking surface 11 on the top to extinguish the fire or cool down the upper part.

[0106] Fire inside a building: In a fire inside a building, the fire may spread along the walls and ceilings. The sponge can be attached near the wall or ceiling to extinguish the fire through water splashing from the sides and moisture released from the top grid-like water-locking surface 11.

[0107] 3. Specific working principle

[0108] See also Figure 8 The water-locking surface 11 at the bottom enhances the water storage performance of the sponge, ensuring that the water is not easily lost during transportation and use. Although the mesh-shaped water-locking surface 11 at the top is not completely covered, it still retains a certain water-locking capacity while allowing some water to be released through the mesh.

[0109] Directional water splashing of the water splashing surface 12: When the water splashing surface 12 on the side is subjected to external force, it will release water to directional splash water to extinguish the fire on the side of the fire source. When the grid-shaped water-locking surface 11 on the top is subjected to external force or water pressure, it will also release part of the water to extinguish the fire or cool down the upper part.

[0110] The internal and external pressure difference enhances the splashing force: when the water inside the sponge is subjected to external pressure, due to the difference between the high density of the water-locking surface 11 and the low density of the splashing surface 12, an internal and external pressure difference will be generated, thereby enhancing the splashing force.

[0111] The top grid-like design realizes fire extinguishing from above: The grid-like water-locking surface 11 design on the top allows some water to be released through the grid, achieving a fire extinguishing or cooling effect on the top. This design not only retains the water-locking performance of the sponge, but also realizes the fire extinguishing function on the top, which is suitable for scenes that require fire extinguishing on both the side and the top at the same time.

[0112] In summary, the artificial sponge body 10 prepared in Example 3 has the characteristics of a grid-shaped top water-locking surface 11, a bottom water-locking surface 11, and a side water-splashing surface 12, and is suitable for scenes where fires need to be extinguished both on the side and above the fire source. Its working principle is based on the water storage performance of the water-locking surface 11, the directional water splashing of the water-splashing surface 12, the internal and external pressure difference to enhance the water splashing force, and the top grid-shaped design to achieve fire extinguishing from above, and can achieve efficient and comprehensive fire extinguishing effects.

[0113] The following specific experiments are used to test the splash force after treatment.

[0114] Purpose

[0115] By quantitatively testing the splashing force of the artificial sponge sphere under different treatment conditions, i.e., the splashing distance and splashing speed after landing, and comparing the data of the blank control group and the experimental group (including Example 1 and different ratio groups), the effect of the treatment process on the splashing force was verified and quantified.

[0116] Experimental Materials

[0117] Artificial sponge sphere:

[0118] Diameter: 20cm

[0119] Quantity: 4 per group, 4 groups in total (blank control group, Example 1 group, 1:2 ratio group (ratio of water-locking surface 11 to water-splashing surface 12 (1:2)), 1:4 ratio group (ratio of water-locking surface 11 to water-splashing surface 12 (1:4))

[0120] Splashing device: Free fall device, used to drop the sponge ball from a certain height (such as 1m) to a flat, hard ground. Ensure that the height and angle of each drop are consistent.

[0121] Measuring tools:

[0122] High-speed camera: used to record the splashing process and measure the splashing range and splashing speed.

[0123] Ruler or measuring tape: Used to accurately measure the diameter of the splash area.

[0124] Video analysis software: used to analyze water splashing velocity from videos recorded by high-speed cameras.

[0125] Auxiliary materials: Waterproof cloth or plastic film: laid on the ground to collect splashed water and assist in measuring the splash range.

[0126] Brackets and clamps: used to fix high-speed cameras to ensure consistent shooting angles and positions.

[0127] Experimental design

[0128] Group design:

[0129] Blank control group: spherical artificial sponge spheres without heating treatment, with a diameter of 20CM.

[0130] Example 1 group: The treatment was carried out according to the method of Example 1, and the area ratio of the water-locking surface 11 to the water-splashing surface 12 was 1:1.

[0131] 1:2 ratio group: The treatment was carried out according to the method of Example 1, except that the water-locking surface 11 of this ratio group accounted for 1 / 3 of the surface area of ​​the sphere, and the water-splashing surface 12 accounted for 2 / 3.

[0132] 1:4 ratio group: The treatment was carried out according to the method of Example 1, except that the water-locking surface 11 of this ratio group accounted for 1 / 5 of the surface area of ​​the sphere, and the water-splashing surface 12 accounted for 4 / 5.

[0133] Experimental process:

[0134] Preparation stage: Mark all artificial sponge spheres according to their groups. Lay a waterproof cloth or plastic film on a flat, hard surface. Fix the high-speed camera and adjust the shooting angle and position to ensure that the splashing process can be clearly recorded.

[0135] Splash test: The sponge ball is dropped freely from a height of 1m to the ground. The splash process is recorded using a high-speed camera. Each sponge ball is tested three times.

[0136] Data recording: Measure the diameter of the splash range from the video recorded by the high-speed camera. Use video analysis software to analyze the splash velocity, which is the initial velocity of the water droplet when it splashes out. Record the splash range and splash velocity for each test, and calculate the average and standard deviation.

[0137] Experimental data:

[0138]

[0139] Experimental conclusion

[0140] Effect of treatment process on splash force:

[0141] The treatment method of Example 1 (the ratio of the water-locking surface 11 to the water-splashing surface 12 is 1:1) has a significant effect on the water-splashing force, and the water-splashing range and water-splashing speed are higher than those of the blank control group. As the proportion of the water-locking surface 11 decreases, the water-splashing force and water-splashing efficiency gradually decrease, indicating that the formation of the water-locking surface 11 has a certain effect on retaining moisture and concentrating water-splashing energy.

[0142] In summary, the artificial sponge body 10 of the present application, after the surface heating process, can accurately deliver the carried water to the target point. During the throwing process, due to the high-density design of the water-locking surface 11, the sponge can stably retain moisture and is not easily lost or scattered due to swinging or wind. Therefore, each time the water is thrown, almost 100% of it can be sprinkled on the target fire, which greatly improves the efficiency of fire extinguishing and relatively reduces the number of times water bombs are thrown. Most importantly, this ability to accurately deliver has a significant improvement in the rescue timeliness for controlling the fire and extinguishing the fire, and has great practical value.

[0143] Artificial sponge is made from rubber, so it is environmentally friendly, combustible and recyclable. Compared with traditional soft foam PU square, it has obvious environmental advantages. Soft foam PU will produce toxins when burned, which is not environmentally friendly, while artificial sponge can avoid this problem and is more in line with modern environmental protection concepts.

[0144] The artificial sponge body 10 has the property of being compressible and storable, which makes it very convenient for standby use and quick application and transportation when needed. This convenience is of particular importance for emergency rescue, forest fire fighting and other scenes, and can ensure that rescuers can deliver fire-fighting equipment to the scene in the shortest time, thereby effectively controlling the fire.

[0145] Since the artificial sponge body 10 has the ability to be accurately delivered, the helicopter can increase the safe distance when delivering firefighting. In the traditional firefighting method, the helicopter needs to be as close to the fire source as possible to deliver, which increases the flight risk. However, the artificial sponge body 10 of the invention can be accurately delivered at a farther distance, so that rescue work can be carried out more safely. This feature is of great significance for improving the safety of rescuers.

[0146] The above implementation modes are merely descriptions of the preferred implementation modes of the invention, and are not intended to limit the scope of the invention. Without departing from the spirit of the invention, various modifications and improvements made to the technical solutions of the invention by ordinary engineers and technicians in the field should fall within the scope of protection determined by the claims of the invention.

Claims

1. A sponge for extinguishing fire, comprising an artificial sponge body, wherein the outer surface of the artificial sponge body is formed with a water-locking surface and a water-splashing surface, and the surface density of the water-locking surface is greater than the surface density of the water-splashing surface.

2. A sponge for extinguishing fire according to claim 1, characterized in that: The area ratio of the water-locking surface to the water-splashing surface is (1-2):(2-4).

3. A sponge for extinguishing fire according to claim 1, characterized in that: The artificial sponge body is a spherical structure, on which a plurality of circles of water-locking surfaces are arranged, and a water-splashing surface is formed between adjacent water-locking surfaces.

4. A sponge for extinguishing fire according to claim 1, characterized in that: The artificial sponge body is a spherical structure, a threaded water-locking surface is arranged on the spherical structure, and the rest of the outer surface of the spherical structure constitutes a water-splashing surface.

5. A sponge for extinguishing fire according to claim 1, characterized in that: The main body of the artificial sponge is a block structure, the water-locking surface is formed on the top surface and the bottom surface of the block structure, and the remaining outer surface part of the block structure constitutes the splashing surface.

6. A process for preparing a sponge for centralized cooling or extinguishing of fire in the air as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: Step 1: Step 1, prepare the artificial sponge raw material and cut it into the required pre-processed shape; Step 2, heating a portion of the outer surface of the artificial sponge body to form a water-locking surface, and the remaining outer surface of the artificial sponge body forms a water-splashing surface; Step 3: Cooling to form the finished product.

7. The process for preparing a sponge for extinguishing fire according to claim 6, characterized in that: The specific steps of step 2 are: placing the artificial sponge body pretreated in step 1 inside the mold, and heating the surface of the artificial sponge body by contacting the heating component inside the mold to form a water-locking surface on the surface of the artificial sponge body; the non-heating component inside the mold does not contact the remaining outer surface of the artificial sponge body, so that it forms a water-splashing surface.

8. The process for preparing a sponge for extinguishing fire according to claim 6, characterized in that: In step 2, the heating temperature of the mold is 170-180° C., and the heating time is 100-180 seconds.

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