CN209970975U - Flaker with fire retardant spraying structure - Google Patents
Flaker with fire retardant spraying structure Download PDFInfo
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- CN209970975U CN209970975U CN201822274166.9U CN201822274166U CN209970975U CN 209970975 U CN209970975 U CN 209970975U CN 201822274166 U CN201822274166 U CN 201822274166U CN 209970975 U CN209970975 U CN 209970975U
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Abstract
The utility model discloses a be provided with flame retardant and spray chipper of structure. The flaker includes: a knife ring, a knife blade and a spraying structure; the blades are distributed on the cutter ring; the spraying structure includes: the fire retardant spraying device comprises a fire retardant storage tank, a spray head and a conveying pipeline, wherein the spray head is connected with the fire retardant storage tank through the conveying pipeline; the number of the spray heads is one, two or more, and the spray heads are distributed along the periphery of the knife ring. The flaker is used for flaking, and the flame retardant is sprayed while flaking. By spraying various flame retardant solutions while slicing, the cooling amplitude of the knife ring and the knife blade can be further improved while the excellent flame retardant coverage rate is unexpectedly obtained.
Description
Technical Field
The invention belongs to the field of wood processing, relates to a machine for wood processing, and particularly relates to a flaker with a flame retardant spraying structure.
Background
Oriented Strand Board (OSB) is a board with oriented structure, which is made up of poplar and pine wood through special equipment, slicing, drying, gluing, directional paving and hot pressing. The surface layer flakes are arranged longitudinally, and the core layer flakes are arranged transversely. The criss-cross arrangement recombines the wood texture structure, thoroughly eliminates the influence of the internal stress of the wood on the processing, and ensures that the wood has excellent easy processing property and moisture resistance. The OSB has a directional structure inside, no joint, no gap and no crack, good integral uniformity and extremely high internal bonding strength, so that the OSB is widely developed in recent years.
However, since the conventional oriented strand board has flammability, it has a limitation in applications in many fields. Although the existing oriented strand board generally improves the flame retardant property by adding a flame retardant, the process complexity is very high, or the use of expensive flame retardant causes high cost, and the flame retardant property cannot meet the requirement of higher safety. Therefore, there is a need for improvement in the apparatus and process for producing oriented strand board in order to improve the flame retardancy of the oriented strand board and the flakeboard and to enable the industrial mass production thereof.
SUMMERY OF THE UTILITY MODEL
The utility model provides a be provided with flaker that fire retardant sprayed structure, flaker includes: a knife ring, a knife blade and a spraying structure;
the blades are distributed on the cutter ring;
the spraying structure includes: the fire retardant spraying device comprises a fire retardant storage tank, a spray head and a conveying pipeline, wherein the spray head is connected with the fire retardant storage tank through the conveying pipeline;
the number of the spray heads may be one, two or more.
According to an embodiment of the present application, the spray heads may be disposed along the outer circumference of the knife ring, preferably evenly distributed on the outer circumference of the knife ring.
According to embodiments of the present application, the blades may be evenly distributed on the knife ring.
According to the flaker of the present application, the angle of arrangement of the blades may be set as desired, for example, the angle between the blades and the knife ring may be selected from 24-35 degrees, for example, from 25, 26, 27, 28, 29, 30, 31, 32, 33, or 34 degrees.
According to the flaking machine, the distance between the spray head and the periphery of the knife ring can be 0-4cm, such as 0.5-4 cm; illustratively, the distance may be 1cm, 1.5cm, 2cm, 3cm, or 4 cm.
According to the flaker of the application, the included angle between the spraying angle of the spraying head and the cutting edge of the blade is less than or equal to 90 degrees, such as 30 degrees, 45 degrees, 60 degrees or 90 degrees; preferably, the spray angle of the spray head is perpendicular to the cutting edge of the blade.
It will be appreciated by those skilled in the art that the number of jets may be set as desired, for example it may be no more than 20, for example no more than 15 or 10; illustratively, the number of spray heads may be 10, 8, 6, 5, 4, 3, 2 or 1.
It will be appreciated by those skilled in the art that the number of blades may be set as desired, for example it may be 10-60, for example 20-50, 30-48.
According to the flaker of the present application, a mass flow meter, a flow sensor, a valve (e.g., a ball valve, a gate valve), and/or a pump may be further disposed on the conveying pipe.
Preferably, the conveying pipeline may comprise a conveying trunk and a conveying branch, and the conveying branches are preferably arranged in parallel. For example, a mass flow meter pump and/or a gate valve are arranged on the conveying main line, and a flow sensor, a ball valve and/or a gate valve are arranged on the conveying branch line.
According to the flaker of the present application, the number of said conveying branches may be the same as or different from the number of said nozzles, preferably one independent conveying branch is provided for each nozzle.
According to the flaker of this application, the fire retardant storage tank can include the jar body and set up the agitator in it, the jar body is preferably the heat preservation jar body, the agitator is preferably electric stirrer.
According to the flaker of this application, spray the structure and can also include the fire retardant and prepare the jar, the fire retardant prepare the jar with the fire retardant storage tank passes through the tube coupling. Further, the flame retardant formulation tank may include a formulation tank body, a stirrer disposed therein, and a weight transmitter.
Preferably, the weight transmitter is arranged at the bottom of the preparation tank body, and the number of the weight transmitters can be one, two or more. For example, the number of weight transmitters may be three. Further, a mass flow meter, a pump and/or a valve can be arranged on a pipeline connecting the flame retardant preparation tank and the flame retardant storage tank. Further, the stirrer is preferably an electric stirrer.
According to the flaker, the fire retardant preparation tank can be connected with the water storage tank through a pipeline; preferably, a pump, a mass flow meter and/or a valve can be arranged on a connecting pipeline of the fire retardant preparation tank and the water storage tank.
According to the flaker of this application, fire retardant pipeline fire retardant prepare the jar with the connecting line of fire retardant storage tank the material of the connecting line of jar and water storage tank is prepared to the fire retardant all can be stainless steel or other materials that are suitable for the storage.
According to the chipper of the present application, the pump may be a vane pump.
A flaker according to the present application, the flaker further includes a motor. The motor drives the knife ring to rotate. Preferably, the motor, mass flow meter, flow sensor, valve (e.g., ball valve, gate valve) and pump are all electrically connected to the PLC controller.
Further, the present application also provides the flaking method, including using a flaker to flake.
Preferably, the flaking method further comprises spraying the fire retardant agent simultaneously with flaking.
According to a preferred embodiment of the invention, the method comprises the following steps:
1) conveying the raw materials to a flaker;
2) with the rotation of the cutter ring, the blade cuts the raw material to obtain a sliced sheet; and simultaneously, spraying a flame retardant solution onto the planing sheet along a direction perpendicular to the cutting edge of the blade to obtain the flame-retardant planing sheet.
Preferably, the spraying is performed from the time when the blade cuts the material to the time during which the chips fall.
Preferably, the fire retardant solution is also sprayed onto the blade edge.
Preferably, the spray head is provided so that the range in which the flame retardant solution is sprayed can cover the chips.
According to the method of the present application, the wood may be selected from wood suitable for preparing OSB, for example, may be at least one of pine, eucalyptus, poplar, paulownia, and the like.
The flame retardant solution may be an aqueous solution of a flame retardant known in the art according to the method of the present application. By way of example, the concentration of flame retardant in the flame retardant solution may be about 20 to 40 weight percent, such as about 25 to 35 weight percent; illustratively, the concentration of the flame retardant in the flame retardant solution is about 20 wt%, about 30 wt%.
The flame retardant may be selected from any one, two or more of the water-soluble flame retardants known in the art according to the methods herein. For example, the flame retardant may contain at least one of ammonium polyphosphate, ammonium phosphate, ammonium sulfate, borax, ammonium sulfamate, sodium phosphate, guanylurea phosphate, guanidine sulfamate, polyphosphazene, guanidine dihydrogen phosphate, diguanidine hydrogen phosphate, guanidine sulfate, and the like; preferably, the flame retardant may be ammonium polyphosphate, a mixture of ammonium phosphate and ammonium sulfate, borax, ammonium sulfamate, a mixture of sodium phosphate and ammonium phosphate, a mixture of guanylurea phosphate, boric acid, borax, and/or guanidine sulfamate. Illustratively, the flame retardant may contain ammonium polyphosphate (e.g., ammonium polyphosphate having a polymerization degree of less than 20, e.g., 6, 8, 10), ammonium phosphate and ammonium sulfate, for example, in a mass ratio of (1-3): 1 (e.g., ammonium polyphosphate having a polymerization degree of less than 20, e.g., 6, 8, 10), ammonium phosphate and ammonium sulfate; illustratively, the flame retardant may contain borax, ammonium sulfamate, sodium phosphate, and ammonium phosphate, for example, in a mass ratio of 2:3:2: 3.
According to the process of the present application, the temperature of the flame retardant solution may be in the range of 0-40 ℃, for example 10-30 ℃, such as 20-25 ℃.
According to the method of the application, the spraying amount of the flame retardant solution can be 20-90L/min; for example, the spraying amount may be 35 to 85.5L/min, 35 to 80L/min.
Preferably, the spraying amount is adjusted by an adjustable speed pump; preferably, the readings indicated by the flow meter are the amount sprayed.
The dimensions of the flakes according to the method of the present application are not particularly limited. By way of example, the width of the flakes may be 5-40mm, such as 10-30 mm; the thickness may be 0.4-0.8mm, for example 0.5-0.7 mm; the length may be 100-180mm, such as 120-160 mm.
According to the method of the present application, the flakes have a water content of 30 to 50 wt%, such as 40 to 47 wt%, illustratively 45 wt%, 45.5 wt%, before spraying the flame retardant solution.
According to the method of the present application, the moisture content of the flakes after spraying the fire retardant solution is higher than the moisture content of the flakes before spraying the fire retardant solution. For example, the moisture content of the flakes may be 35-55 wt%, such as 43-50 wt%, 45-48 wt%, after spraying the flame retardant solution.
According to the method of the present application, the flame retardant flakes have a flame retardant attached thereto, which may be in an amount of 1.0 to 6.0 wt%, such as 2.0 to 5.0 wt%, 2.2 to 4.7 wt%, 2.5 to 4.5 wt%;
the weight of the flame retardant is the weight percentage of the flame retardant attached to the wood chips after the flame retardant is sprayed to the absolutely dry wood chips, wherein the weight of the flame retardant is calculated by the solid flame retardant.
According to the present application, the attachment includes a state of being adsorbed, wetted or otherwise bonded to the surface of the sliced piece and its interior.
The utility model has the advantages that:
the utility model discloses a set up the fire retardant on the flaking machine and spray the structure, in the flaking, the utilization is sprayed the structure and can be sprayed fire retardant solution on to the flaking. According to the needs, the obtained sliced sheets can be uniformly covered in the spraying range of the flame retardant solution, the coverage rate of the flame retardant is good, the adhesion effect is excellent, and the flame retardant property of the sliced sheets can be obviously improved.
The applicant has surprisingly found that by spraying various flame retardant solutions simultaneously with the flaking, the cooling amplitude of the knife ring and the knife blade can be further improved while surprisingly achieving excellent flame retardant coverage. Under the same condition, compared with the cooling water sprayed with the same temperature, the flaking machine and the flaking method can obviously improve the temperature reduction amplitude of the blade. This is clearly very advantageous for the industrial scale implementation of the process for the preparation of flame retardant chips.
Moreover, the process is simple and easy to implement, low in equipment cost and beneficial to optimizing the OSB production process.
Drawings
Fig. 1 is a schematic structural diagram of a flaker provided with a spraying structure according to an embodiment of the present invention.
Reference numerals: 1-cutter ring, 2-cutter blade, 3-flame retardant storage tank, 4-pressure nozzle, 5-conveying main line, 6-conveying branch line, 7-mass flow meter, 8-impeller pump, 9-flow sensor, 10-ball valve, 11-storage tank body, 12-stirrer, 13-flame retardant preparation tank, 14-tank body, 15-weight transmitter and 16-water storage tank.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications can be made by those skilled in the art after reading the disclosure of the present invention, and these equivalents also fall within the scope of the invention.
The experimental methods used in the following examples are all conventional methods unless otherwise specified; reagents, materials and the like used in the following examples are commercially available unless otherwise specified.
The model of the flow sensor used in the examples is DC-PNP, the model of the impeller pump is MJ083BY0, the model of the pressure nozzle is W-2.0, and the power of the motor is 1.1 kW.
The flame retardant solutions used in examples 2-21 were: and adding water into ammonium polyphosphate with the polymerization degree of 6, ammonium phosphate and ammonium sulfate according to the mass ratio of 1:3:1 to prepare a flame retardant solution.
Unless otherwise indicated, percentages hereinafter refer to weight percentages.
Example 1
A flaker provided with a flame retardant spraying structure as shown in fig. 1, the flaker comprising: a knife ring 1 and blades 2 uniformly distributed on the knife ring 1, wherein the number of the blades 2 is 48 (three blades are exemplarily shown in fig. 1, and the other 45 blades which are not shown are uniformly arranged on the knife ring 1);
the spraying structure includes: the fire retardant device comprises a fire retardant storage tank 3, a pressure nozzle 4 and a fire retardant conveying pipeline, wherein the pressure nozzle 4 is connected with the fire retardant storage tank 3 through the fire retardant conveying pipeline;
the spray angle of the pressure nozzle 4 is perpendicular to the cutting edge of the blade 2, so that the angle between the nozzle and the blade is 90 degrees. The number of the pressure nozzles 4 is 10, the pressure nozzles 4 are uniformly distributed along the outer circumference of the knife ring 1, and the distance between the pressure nozzles 4 and the outer circumference of the knife ring 1 can be 2 cm.
The fire retardant conveying pipeline comprises a conveying main road 5 and a conveying branch road 6, and the conveying branch roads 6 are connected in parallel. The conveying main line 5 is provided with a mass flow meter 7 and an impeller pump 8, and each conveying branch 6 is provided with a flow sensor 9 and a ball valve 10. The number of supply branches 6 can be the same as or different from the number of spray heads, preferably one supply branch 6 is connected to one spray head 4.
The fire retardant storage tank comprises a storage tank body 11 and a stirrer 12, wherein the storage tank body 11 is a heat-preservation tank body, and the stirrer 12 is preferably an electric stirrer.
The spraying structure further comprises a fire retardant preparation tank 13, and the fire retardant preparation tank 13 is connected with the fire retardant storage tank 3 through a pipeline. The flame retardant preparation tank 13 comprises a preparation tank body 14, a stirrer 12 and three weight transmitters 15, wherein the weight transmitters 15 are uniformly arranged at the bottom of the preparation tank body 14. And a mass flow meter 7 and an impeller pump 8 are arranged on a pipeline connecting the flame retardant preparation tank 13 and the flame retardant storage tank 3.
The fire retardant preparation tank 13 is also connected with the water storage tank 16 through a pipeline, and an impeller pump 8 is arranged on the connecting pipeline of the fire retardant preparation tank 13 and the water storage tank 16.
Illustratively, the fire retardant conveying pipeline, the connecting pipeline of the fire retardant preparation tank and the fire retardant storage tank, and the connecting pipeline of the fire retardant preparation tank and the water storage tank are all made of stainless steel.
According to one embodiment of the invention, the flaker further comprises a motor. The motor drives the knife ring to rotate; the motor, the mass flowmeter, the flow sensor, the ball valve and the pump are all electrically connected with the PLC.
Examples 2 to 21
With the device provided in example 1, the blade cuts wood flakes (flake specification: width 5-40mm, thickness 0.4-0.8mm, length 100 and 180mm) with the rotation of the blade ring of the flaker, and at the same time, the fire retardant solution is uniformly sprayed on the flakes along the direction perpendicular to the blade edge to obtain the fire retardant flakes.
The flame retardant solution is sprayed in a range that covers all the chips.
The temperature of the flame retardant solution is about 25 +/-5 ℃;
the concentration of the flame retardant in the flame retardant solution, the amount of flame retardant attached, the amount of spray (expressed as pump flow), and the moisture content of the chips before and after spraying the flame retardant are shown in table 1.
Table 1.
Note: when the pump flow reaches the maximum value in the table, an obvious liquid outflow phenomenon appears inside the equipment, which indicates that the adsorption capacity of the shaving pieces to the flame retardant solution at present is saturated under the current working condition.
Test example 1 testing of flame retardancy of flakes
The flame retardant chips obtained by spraying the flame retardant solution on the surfaces of the samples 2 to 21 were tested, and the test results are shown in table 2.
1. Flame retardant spraying uniformity and coverage rate of flame retardant shaving sheet
(1) The flame-retardant chips are distinguished by adding a red coloring agent into a flame retardant storage tank, wherein the addition amount of the red coloring agent is 1 kilogram of coloring agent added into each cubic meter of flame retardant solution, and the storage amount of the flame retardant in the storage tank is controlled before detection, so that the storage amount of the flame retardant is about 10 minutes of usage amount.
(2) Sampling is carried out on the sprayed sliced sheets on a conveying belt for a plurality of times, the sampling interval time is 3-4 minutes, the number of sliced sheets for each sampling is 50, and the area of the sliced sheets is required to be larger than 40% of that of standard sliced sheets (the size of the standard sliced sheets is 120mm multiplied by 20 mm).
(3) And (3) uniformity detection: and observing the covering condition of the flame retardant on each sliced sheet through the surface color of the sliced sheet, selecting one surface of each sliced sheet which covers more, visually judging, and judging that the spraying uniformity of the sliced sheet is unqualified when the surface area of the part with the color difference of the sliced sheet is more than 30% of the surface area of the single surface of the whole sliced sheet.
Uniformity is expressed as the ratio of uniformity acceptable flakes to total number of flakes:
uniformity (number of uniform acceptable shavings/total number of shavings) × 100%.
(4) Coverage rate: and observing the covering condition of the flame retardant on each sliced sheet through the surface color of the sliced sheet, selecting one surface of each sliced sheet which covers more, visually judging, and judging that the sliced sheet is unqualified in spraying and covering when the area of the part of the sliced sheet which is not dyed is larger than 10% of the surface area of the single surface of the whole sliced sheet.
Coverage is judged by coverage rate:
coverage ═ 100% (number of covered acceptable shavings/total number of shavings).
2. Amount of flame retardant
And calculating the using amount of the flame retardant by detecting the change of the water content of the sliced sheets before and after spraying.
(1) And (3) detecting the concentration of the flame retardant: about 50g of flame retardant solution is taken from a production line, 2g of the flame retardant solution is taken from 50g of the flame retardant solution and dropped into a watch glass, the watch glass is placed into an oven at 50 +/-5 ℃ for drying for 2 hours, and the solid content is calculated. The flame retardant solids content is designated a.
(2) And (3) measuring the water content of the sliced wood without spraying the flame retardant (namely detecting the water content of the wood): and (4) randomly selecting 5 complete woods before a flaking machine, respectively sampling and detecting the moisture content, and taking the average value of the moisture content for 5 times as the moisture content b of the flaked wood.
(3) And (3) determining the water content of the flame-retardant sliced sheets: sampling nearby on the sprayed sliced sheet conveying belt, sampling for 3 times at intervals of 30 seconds, and uniformly mixing. Randomly selecting 10 sliced sheets (the area is not less than 40% of the area of the standard sliced sheet) from the uniformly mixed sliced sheets, putting the sliced sheets into a rapid moisture tester, and measuring the moisture content at 100 +/-2 ℃ for 10 minutes, wherein the moisture content is marked as c.
(4) The flame retardant adhesion (weight percentage of the flame retardant adhering to the wood chips after spraying) is calculated as follows:
the formula x ═ c-b) × a/((1-b) × (1-a-c)) × 100% was calculated.
3. Flame retardant effect detection of flame retardant shaving sheet
The detection method comprises the following steps:
(1) and (3) baking the flame-retardant sliced sheets in an oven at 100 +/-2 ℃ for 10 minutes, then putting the flame-retardant sliced sheets on an alcohol lamp for combustion, visually judging the time required by ignition of the sliced sheets, and recording as the flame-retardant time. And judging whether the sliced sheet achieves the flame-retardant effect of the step according to the flame-retardant time required by the step.
(1) Sampling nearby on the sprayed sliced sheet conveying belt, sampling for 3 times at intervals of 30 seconds, and uniformly mixing. Randomly selecting 50 flakes (the area is not less than 40% of the area of the standard flakes) from the uniformly mixed flakes.
(2) Putting the sliced sheets into a baking oven at 100 +/-2 ℃ and uniformly paving the sliced sheets without overlapping for 10 minutes.
(3) In the windless show window, the alcohol lamp is ignited, one corner of the flame-retardant flaking is vertically clamped by the clamp and is placed above the alcohol lamp, and the lowest corner of the flaking is positioned in the center of the outer flame of the alcohol lamp. The burning of the flakes was observed and the time at which the flakes were ignited was recorded, as well as the after-flame time and smoldering time after the alcohol burner was removed.
The acceptable standards for the flame retardancy of the chips are shown in Table 2.
Table 2.
The flame retardance takes the flame retardant qualification rate as a judgment result:
the flame retardant yield is (number of chips that pass flame retardancy/total number of chips) × 100%.
Table 3.
| Item | Flame retardant coverage (%) | Spray uniformity (%) | Percent of pass for flame retardancy (%) |
| Example 2 | 92 | 86 | 94 |
| Example 3 | 94 | 90 | 96 |
| Example 4 | 96 | 92 | 94 |
| Example 5 | 96 | 92 | 94 |
| Example 6 | 100 | 94 | 96 |
| Example 7 | 96 | 94 | 96 |
| Example 8 | 98 | 94 | 98 |
| Example 9 | 96 | 96 | 100 |
| Example 10 | 96 | 96 | 100 |
| Example 11 | 96 | 96 | 100 |
| Example 12 | 92 | 90 | 96 |
| Example 13 | 94 | 92 | 100 |
| Example 14 | 100 | 98 | 98 |
| Example 15 | 98 | 96 | 100 |
| Example 16 | 90 | 82 | 90 |
| Example 17 | 90 | 86 | 88 |
| Example 18 | 92 | 84 | 90 |
| Example 19 | 92 | 86 | 92 |
| Example 20 | 86 | 88 | 86 |
| Example 21 | 86 | 88 | 90 |
From the above data, it can be seen that the fire-retardant qualification rate of the fire-retardant flaked pieces obtained in examples 2-21 is above 86%, and can reach 100% at most. And, the flame retardant performance can be adjusted by controlling the flame retardant concentration and the pump flow rate in the flame retardant solution. Wherein, when the pump flow is more than 35L/min and the concentration of the flame retardant is between 20 and 31 weight percent, the qualification rate of the flame-retardant sliced sheets is more than 94 percent.
EXAMPLE 22 cutter Ring temperature monitoring
After 10 minutes of flaking in example 2, the knife ring temperature was monitored using an infrared temperature detector immediately after knife ring withdrawal. Each batch of wood was planed for 4 knives, which took about 1 minute, and 40 batches were monitored.
Example 23
Example 22 was repeated except that the cutter ring was cooled with water at the same temperature as in example 2 instead of the flame retardant solution used in example 2.
Example 24
Example 22 was repeated except that the knife ring was cooled using the same temperature of flame retardant solution a as in example 2 instead of the flame retardant solution used in example 2;
the flame retardant solution A is: according to the mass ratio of borax: ammonium sulfamate: sodium phosphate: and adding water to prepare a flame retardant solution A, wherein the ammonium phosphate is 2:3:2: 3. The flame retardant concentration of the flame retardant solution a was the same as in example 2.
The results of monitoring the temperature of the cutter ring are shown in tables 4, 5 and 6.
TABLE 4 example 22 temperature monitoring data
| Serial number | Temperature/. degree.C | Serial number | Temperature/. degree.C | Serial number | Temperature/. degree.C | Serial number | Temperature/. degree.C | Serial number | Temperature/. degree.C |
| 1 | 29.5 | 9 | 26.1 | 17 | 29.0 | 25 | 27.4 | 33 | 26.6 |
| 2 | 30.0 | 10 | 29.3 | 18 | 31.3 | 26 | 28.0 | 34 | 27.7 |
| 3 | 27.9 | 11 | 31.9 | 19 | 29.4 | 27 | 30.1 | 35 | 30.2 |
| 4 | 31.9 | 12 | 27.6 | 20 | 30.5 | 28 | 30.8 | 36 | 28.9 |
| 5 | 27.3 | 13 | 31.9 | 21 | 31.8 | 29 | 27.4 | 37 | 30.9 |
| 6 | 27.0 | 14 | 28.0 | 22 | 29.0 | 30 | 29.9 | 38 | 31.2 |
| 7 | 27.8 | 15 | 29.8 | 23 | 28.9 | 31 | 29.6 | 39 | 31.1 |
| 8 | 28.5 | 16 | 28.2 | 24 | 28.7 | 32 | 31.1 | 40 | 29.9 |
Note: ambient temperature: 23.4 ℃, temperature of flame retardant solution: at 25 ℃.
TABLE 5 example 23 temperature monitoring data
| Serial number | Temperature/. degree.C | Serial number | Temperature/. degree.C | Serial number | Temperature/. degree.C | Serial number | Temperature/. degree.C | Serial number | Temperature/. degree.C |
| 1 | 33.4 | 9 | 33.2 | 17 | 33.7 | 25 | 34.5 | 33 | 35.2 |
| 2 | 36.5 | 10 | 32.0 | 18 | 34.0 | 26 | 35.6 | 34 | 35.2 |
| 3 | 35.0 | 11 | 36.9 | 19 | 35.2 | 27 | 35.5 | 35 | 33.2 |
| 4 | 35.7 | 12 | 35.5 | 20 | 35.0 | 28 | 32.4 | 36 | 33.8 |
| 5 | 35.8 | 13 | 34.5 | 21 | 34.2 | 29 | 33.7 | 37 | 34.6 |
| 6 | 37.0 | 14 | 34.8 | 22 | 33.3 | 30 | 34.3 | 38 | 33.6 |
| 7 | 34.0 | 15 | 36.6 | 23 | 33.4 | 31 | 34.3 | 39 | 32.3 |
| 8 | 33.9 | 16 | 34.6 | 24 | 32.1 | 32 | 36.1 | 40 | 33.0 |
Note: ambient temperature: 23.4 ℃, water temperature: at 25 ℃.
TABLE 6 example 24 temperature monitoring data
| Serial number | Temperature/. degree.C | Serial number | Temperature/. degree.C | Serial number | Temperature/. degree.C | Serial number | Temperature/. degree.C | Serial number | Temperature/. degree.C |
| 1 | 28.3 | 9 | 28.4 | 17 | 30.8 | 25 | 28.4 | 33 | 28.1 |
| 2 | 30.8 | 10 | 30.4 | 18 | 27.4 | 26 | 28.0 | 34 | 28.8 |
| 3 | 28.4 | 11 | 29.4 | 19 | 29.9 | 27 | 27.7 | 35 | 31.2 |
| 4 | 30.7 | 12 | 26.6 | 20 | 31.7 | 28 | 30.2 | 36 | 27.2 |
| 5 | 29.6 | 13 | 31.4 | 21 | 30.4 | 29 | 28.5 | 37 | 31.9 |
| 6 | 29.0 | 14 | 28.9 | 22 | 28.0 | 30 | 30.8 | 38 | 30.4 |
| 7 | 30.8 | 15 | 30.9 | 23 | 29.9 | 31 | 30.6 | 39 | 29.1 |
| 8 | 27.3 | 16 | 27.7 | 24 | 27.4 | 32 | 31.9 | 40 | 29.4 |
Note: ambient temperature: 23.4 ℃, water temperature: at 25 ℃.
From the above monitoring results, it can be seen that: the cooling effect of spraying the fire retardant solution is better than that of spraying cooling water, and the cooling amplitude is obviously improved. And the cooling effect of spraying different water-soluble flame retardant solutions is basically the same.
The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. Be provided with flaker that fire retardant sprayed structure, its characterized in that, flaker includes: a knife ring, a knife blade and a spraying structure;
the blades are distributed on the cutter ring;
the spraying structure includes: the fire retardant spraying device comprises a fire retardant storage tank, a spray head and a conveying pipeline, wherein the spray head is connected with the fire retardant storage tank through the conveying pipeline;
the number of the spray heads is one, two or more.
2. The chipper as defined in claim 1, wherein the spray head is disposed along an outer circumference of the knife ring;
the blades are uniformly distributed on the cutter ring, and the included angle between each blade and the cutter ring is 24-35 degrees.
3. The chipper as defined in claim 2, wherein the distance between the spray head and the periphery of the knife ring is 0-4 cm.
4. The chipper as claimed in claim 2, wherein the angle between the spray angle of the spray head and the cutting edge of the blade is not more than 90 degrees.
5. The flaker of claim 1 wherein the number of blades is 10-60.
6. Chipper as claimed in claim 1, characterized in that a mass flow meter, a flow sensor, valves and/or a pump are arranged on the conveying pipe.
7. The chipper as recited in claim 1, wherein the conveying conduit comprises a conveying trunk and a conveying branch, the conveying branches being connected in parallel;
the number of the conveying branches is the same as or different from that of the spray heads;
the fire retardant storage tank comprises a tank body and a stirrer arranged in the tank body.
8. The flaker of any of claims 1-7, wherein the spray structure further comprises a fire retardant formulation tank, the fire retardant formulation tank being connected to the fire retardant storage tank by a conduit;
the fire retardant preparation tank comprises a preparation tank body, a stirrer and a weight transmitter, wherein the stirrer and the weight transmitter are arranged in the preparation tank body;
and a pipeline for connecting the fire retardant preparation tank and the fire retardant storage tank is provided with a mass flow meter, a flow sensor, a valve and/or a pump.
9. The flaker of any of claims 1-7, wherein the flaker further comprises a motor; and the motor, the mass flow meter, the flow sensor, the valve and the pump are all electrically connected with the PLC.
10. The flaker of claim 8, wherein the connecting pipeline of the conveying pipeline, the fire retardant preparation tank and the fire retardant storage tank, and the connecting pipeline of the fire retardant preparation tank and the water storage tank are all made of stainless steel.
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| CN201822274166.9U CN209970975U (en) | 2018-12-29 | 2018-12-29 | Flaker with fire retardant spraying structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109746985A (en) * | 2018-12-29 | 2019-05-14 | 湖北宝源木业有限公司 | It is provided with the chipper and fire retardant spray method of fire retardant spray structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109746985A (en) * | 2018-12-29 | 2019-05-14 | 湖北宝源木业有限公司 | It is provided with the chipper and fire retardant spray method of fire retardant spray structure |
| CN109746985B (en) * | 2018-12-29 | 2024-04-16 | 湖北宝源木业有限公司 | Flaker with flame retardant spraying structure and flame retardant spraying method |
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