Blasting dust fall device

Abstract

The invention relates to the technical field of blasting dust fall, in particular to a blasting dust fall device which comprises a base, an annular spraying disc, a rotary guide cylinder, a rotary cylinder, a liquid pushing block and a sealing cover, premixed liquid and a gas-producing reactant are stored through sub-cavities, and rapid mixing of components is achieved through a rotary triggering structure. During use, the limiting plug pin is pulled out, the rotating cylinder is screwed, the liquid storage cavity is made to communicate with the liquid guide groove, the liquid pushing block accelerates liquid discharge, sodium bicarbonate and citric acid are triggered to react to generate a large amount of foam, and the foam is evenly sprayed out along the annular flow channel to cover an explosion area. The device solves the problems of slow foaming and complex operation of a traditional dust falling device, realizes rapid foaming, reduces water consumption, and has the advantages of rapid reaction, efficient dust falling, stable structure and the like.

Description

Technical Field

[0001] The invention relates to the technical field of blasting dust suppression, in particular to a blasting dust suppression device. Background Art

[0002] In blasting operations in mining, construction and other fields, dust pollution is a key issue that needs to be solved urgently. Traditional dust reduction methods, such as spraying and watering, have defects such as large water consumption, low capture efficiency of fine dust (PM2.5 / PM10), and fast evaporation in dry environments. Although foam dust reduction technology can improve the dust reduction effect by adhering dust to the foam liquid film, the existing foam dust reduction devices generally have the following problems: First, the foam generation speed is slow, and it is difficult to form effective coverage at the moment of blasting; second, the equipment operation is complicated, and it is impossible to achieve rapid startup and precise control. Therefore, there is an urgent need for a blasting dust reduction device that can quickly generate stable foam, has a compact structure and is easy to operate. Summary of the invention

[0003] In view of the problems in the prior art, the present invention provides a blasting dust suppression device, which realizes the rapid response and uniform spraying of the foam composition through the liquid storage chamber divided chamber design and the rotary trigger mixing structure, and solves the problems of slow foaming and complex operation of traditional devices.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a blasting dust reduction device, comprising:

[0005] A base with an arc-shaped guide groove on the top;

[0006] An annular spray disc is arranged above the base and a flow channel is arranged between the annular spray disc and the arc-shaped guide groove. The top of the annular spray disc is fixedly connected to a fixed sleeve, and an inverted inner cone is fixed to the inner bottom of the fixed sleeve. Both the fixed sleeve and the inner cone are connected to the arc-shaped guide groove.

[0007] The rotating guide cylinder is fixedly plugged into the top of the fixed sleeve, the outer cylinder wall at the bottom of the rotating guide cylinder penetrates through a liquid guide groove, and the bottom sealing plate is fixed to the position of the inner cylinder wall of the rotating guide cylinder corresponding to the liquid guide groove;

[0008] The rotating cylinder is movably plugged into the interior of the rotating guide cylinder and the bottom is in contact with the bottom sealing plate. The top of the rotating cylinder is provided with a liquid storage cavity, and the interior of the liquid storage cavity is filled with a foam composition.

[0009] There are three liquid pushing blocks, and the three liquid pushing blocks are respectively arranged inside the first liquid storage chamber, the second liquid storage chamber and the third liquid storage chamber;

[0010] The sealing cover is threadedly sleeved on the top of the rotating drum, the top of the sealing cover is movably plugged with a limiting latch, and the limiting latch passes through one end of the sealing cover and is plugged on the fixed sleeve.

[0011] Specifically, a plurality of sets of fastening bolts are inserted into the bottom thread of the base, and the fastening bolts pass through one end of the base and are threadedly connected to the inner cone to support the annular spray disc and ensure the formation of the flow channel.

[0012] Specifically, a rotation groove is formed through the outer cylinder wall at the top of the rotation guide cylinder, and a limiting protrusion is fixedly connected to the outer cylinder wall of the rotation cylinder. The limiting protrusion is inserted into the interior of the rotation groove to ensure that the rotation cylinder can be smoothly pulled upward and its pulling out can be limited.

[0013] Specifically, the liquid pushing block is made of 304 stainless steel or 316 stainless steel, which can ensure that the liquid pushing block is not corroded and can still apply pressure to push the liquid inside the liquid storage chamber to accelerate discharge.

[0014] Specifically, the limiting latch passes through the outer wall of one end of the sealing cover and is sleeved with a ball block, and the provision of the ball block can prevent the limiting latch from accidentally falling off.

[0015] Specifically, the liquid storage chamber includes liquid storage chamber 1, liquid storage chamber 2 and liquid storage chamber 3;

[0016] The foam composition is composed of the following components in percentage by mass: surfactant: 1-5%, foam stabilizer: 0.5-3%, thickener: 0.1-2%, wetting agent: 1-5%, gas generating reactant A: 5-15%, gas generating reactant B: 5-15% and the balance of water;

[0017] The surfactant, foam stabilizer, thickener and wetting agent are dissolved in water to prepare a premixed liquid which is filled into the first liquid storage chamber, and the gas generating reactant A and the gas generating reactant B are respectively filled into the second liquid storage chamber and the third liquid storage chamber.

[0018] Specifically, the surfactant is a compound of anionic surfactant and nonionic surfactant, with a mass ratio of 1:1-3:1;

[0019] The gas generating reactant A is carbonate or bicarbonate, and the gas generating reactant B is an organic acid or an acid salt.

[0020] Specifically, the anionic surfactant is one or both of sodium dodecylbenzene sulfonate and sodium α-olefin sulfonate;

[0021] The nonionic surfactant is one or two of fatty alcohol polyoxyethylene ether (AEO-9) and coconut oil polyoxyethylene ether;

[0022] The gas generating reactant A is sodium bicarbonate, and the gas generating reactant B is citric acid or tartaric acid.

[0023] Specifically, the foam stabilizer is one or both of lauryl betaine and cocamidopropyl betaine;

[0024] The thickener is polyacrylamide (molecular weight 500,000-1,000,000) or sodium carboxymethyl cellulose;

[0025] The wetting agent is one or both of propylene glycol and glycerol.

[0026] Beneficial effects of the present invention:

[0027] 1. Quick response and precise triggering: The limited rotation structure of the rotating cylinder and the rotating guide cylinder can realize the connection between the liquid storage chamber and the liquid guide groove in a short time, so that the premixed liquid and the gas-generating reactants A and B are quickly mixed, triggering the acid-base reaction of sodium bicarbonate and citric acid, and quickly generating a large amount of foam inside to meet the instantaneous dust reduction requirements of blasting.

[0028] 2. Sealed chamber design: The liquid storage chamber is doubly sealed by the bottom sealing plate and the liquid pusher block to avoid premature mixing and failure of the components, ensuring stable performance during transportation and storage of the device. The liquid pusher block fits the inner wall of the liquid storage chamber to accelerate liquid discharge and improve foaming efficiency.

[0029] 3. Uniform coverage and efficient dust reduction: The annular spray disc and the arc-shaped guide groove form an annular flow channel, and the foam is sprayed evenly along the circumference. Compared with traditional water mist, the dust reduction efficiency is improved and the water consumption is reduced.

[0030] 4. Convenient operation and stable structure: The combination of limit pin and threaded sealing cover enables quick assembly and startup of the device; the connection structure of the fastening bolt and the inner cone ensures stable operation under blasting vibration environment and adapts to complex engineering scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0032] Figure 1 A schematic diagram of the structure of the blasting dust suppression device provided by the present invention;

[0033] Figure 2 A three-dimensional exploded view of the blasting dust suppression device provided by the present invention;

[0034] Figure 3 A plan view of the blasting dust suppression device provided by the present invention;

[0035] Figure 4 A cross-sectional view of the blasting dust suppression device provided by the present invention;

[0036] Figure 5 A planar cross-sectional view of a base in the blasting dust suppression device provided by the present invention;

[0037] Figure 6 A schematic structural diagram of an annular spray disc in the blasting dust suppression device provided by the present invention.

[0038] In the figure: 1, base; 1-1, arc-shaped guide groove; 2, annular spray disc; 2-1, fixed sleeve; 2-2, inner cone; 3, fastening bolt; 4, rotating guide cylinder; 4-1, rotating groove; 4-2, liquid guide groove; 4-3, bottom sealing plate; 5, rotating cylinder; 5-1, limiting protrusion; 5-2, liquid storage chamber 1; 5-3, liquid storage chamber 2; 5-4, liquid storage chamber 3; 6, liquid pusher block; 7, sealing cover; 7-1, limiting latch; 7-2, ball block. DETAILED DESCRIPTION

[0039] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0040] like Figure 1-Figure 6 As shown, the blasting dust suppression device of the present invention comprises:

[0041] Base 1: An arc-shaped guide groove 1-1 is provided on the top, and the bottom is threadedly connected to the inner cone 2-2 through multiple sets of fastening bolts 3 to form a stable supporting structure.

[0042] Annular spray disc 2: It is arranged above the base and forms a flow channel with the arc-shaped guide groove 1-1. The top is fixedly connected to the fixed sleeve 2-1, and the bottom is fixed with an inverted inner cone 2-2 to ensure that the liquid is evenly guided to the flow channel.

[0043] Rotation guide cylinder 4: fixedly plugged into the top of the fixed sleeve 2-1, with a liquid guide groove 4-2 on the bottom outer cylinder wall, and a bottom sealing plate 4-3 at the corresponding position of the inner cylinder wall for closing the liquid storage cavity. A rotation groove 4-1 is provided on the top outer cylinder wall, which cooperates with the limiting protrusion 5-1 of the rotating cylinder 5 to realize rotation guidance.

[0044] Rotating cylinder 5: It is movably inserted into the rotating guide cylinder 4, and the liquid storage cavity is closed when the bottom is in contact with the bottom sealing plate 4-3. The top is provided with a liquid storage cavity, including liquid storage cavity 1 5-2, liquid storage cavity 2 5-3, and liquid storage cavity 3 5-4, which are used to store the premixed liquid, gas generating reactant A, and gas generating reactant B, respectively.

[0045] Liquid pushing block 6: three blocks, respectively arranged in each liquid storage cavity, made of 304 stainless steel or 316 stainless steel to ensure corrosion resistance and accelerate liquid discharge.

[0046] Sealing cover 7: Threaded sleeve on the top of rotating cylinder 5, connected to fixed sleeve 2-1 through limiting latch 7-1 to prevent accidental rotation. Ball block 7-2 is provided at the end of the latch to prevent falling off.

[0047] Foam composition components

[0048] Premix: Contains surfactant (anionic and nonionic compound, such as sodium dodecylbenzene sulfonate and AEO-9), foam stabilizer (such as dodecyl betaine), thickener (such as polyacrylamide), wetting agent (such as glycerol), dissolved in water to form a basic solution.

[0049] Gas-generating reactant A: carbonate / bicarbonate such as sodium bicarbonate.

[0050] Gas-generating reactant B: organic acid / acid salt such as citric acid and tartaric acid.

[0051] During assembly, the rotating cylinder 5 is rotated and inserted into the inner bottom of the rotating guide cylinder 4, so that multiple liquid storage chambers are closed by the bottom sealing plate 4-3, and then the surfactant, foam stabilizer, thickener and wetting agent are dissolved in water to form a premixed liquid and filled into the liquid storage chamber 1 5-2, and the gas generating reactant A and the gas generating reactant B are respectively filled into the liquid storage chamber 2 5-3 and the liquid storage chamber 3 5-4, and a cavity for inserting the liquid pushing block 6 is reserved. After the liquid pushing block 6 is inserted into the corresponding liquid storage cavity, the sealing cover 7 is tightened and closed, and the limiting pin 7-1 is inserted into the socket on the rotating guide cylinder 4, so as to limit the sealing cover 7 and avoid accidental rotation of the sealing cover 7 and the rotating cylinder 5.

[0052] Select a relatively flat place in the area where dust reduction is required (i.e., the area where the explosion can generate smoke and dust) in advance, and use the device within half an hour before the explosion. When using it, pull the limit pin 7-1 upward to separate the pin from the fixed sleeve 2-1, and then twist the sealing cover 7 and the rotating cylinder 5 together, and the limit protrusion 5-1 on the rotating cylinder 5 rotates along the rotating groove 4-1 on the rotating guide cylinder. During the rotation of the limit protrusion 5-1 along the rotating groove 4-1, the bottom of the rotating cylinder 5 can be separated from the bottom sealing plate 4-3, so that the liquid storage chamber is connected with the liquid guide groove 4-2, and the liquid inside the liquid storage chamber is transported along the liquid guide groove 4-2 to the arc-shaped guide groove 1-1 on the base 1 and the cavity inside the annular spray disc 2, and the liquid pusher block 6 that is arranged to fit and seal with the inner wall of the liquid storage chamber can accelerate the discharge of the liquid inside the liquid storage chamber;

[0053] The sodium bicarbonate in the foam composition reacts rapidly with citric acid (the sudden drop in pH triggers gas production), and a large amount of foam is generated in a short period of time. The foam will be sprayed along the flow channel between the base 1 and the annular spray disc 2, thereby forming a foam coverage on the ground within a certain area.

[0054] Maintenance and precautions

[0055] Cleaning of the liquid storage chamber: After use, disassemble the rotating cylinder 5 and rinse the liquid storage chamber and the liquid pushing block 6 with clean water to prevent residual components from crystallizing and clogging the channel.

[0056] Material compatibility: The push block 6 is made of 304 / 316 stainless steel, which has no chemical reaction with the foam composition; the sealing component is made of EPDM rubber, which is resistant to acid and alkali corrosion, ensuring long-term reliability.

[0057] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. Blasting dust suppression device, characterized in that: include: A base (1) having an arc-shaped guide groove (1-1) formed on the top; An annular spray disc (2) is arranged above the base (1) and a flow channel is arranged between the annular spray disc (2) and the arc-shaped guide groove (1-1); the top of the annular spray disc (2) is fixedly connected to a fixed sleeve (2-1); an inverted inner cone (2-2) is fixed to the inner bottom of the fixed sleeve (2-1); and both the fixed sleeve (2-1) and the inner cone (2-2) are connected to the arc-shaped guide groove (1-1); The rotating guide tube (4) is fixedly plugged into the top of the fixed sleeve (2-1); a liquid guide groove (4-2) is formed through the outer tube wall at the bottom of the rotating guide tube (4); and a bottom sealing plate (4-3) is fixed to the inner tube wall of the rotating guide tube (4) at a position corresponding to the liquid guide groove (4-2); A rotating cylinder (5) is movably plugged into the interior of the rotating guide cylinder (4) and has its bottom in contact with the bottom sealing plate (4-3); a liquid storage cavity is formed through the top of the rotating cylinder (5), and the interior of the liquid storage cavity is filled with a foam composition; There are three liquid pushing blocks (6), and the three liquid pushing blocks (6) are respectively and correspondingly arranged inside the first liquid storage chamber (5-2), the second liquid storage chamber (5-3) and the third liquid storage chamber (5-4); The sealing cover (7) is threadedly sleeved onto the top of the rotating cylinder (5); the top of the sealing cover (7) is movably plugged with a limit pin (7-1), and the limit pin (7-1) passes through one end of the sealing cover (7) and is plugged onto the fixed sleeve (2-1).

2. The blasting dust suppression device according to claim 1, characterized in that: The bottom of the base (1) is threadedly plugged with a plurality of sets of fastening bolts (3), and the fastening bolts (3) pass through one end of the base (1) and are threadedly connected to the inner cone (2-2) to support the annular spray disc (2).

3. The blasting dust suppression device according to claim 1, characterized in that: A rotation groove (4-1) is formed through the outer cylinder wall at the top of the rotation guide cylinder (4), and a limiting protrusion (5-1) is fixedly connected to the outer cylinder wall of the rotation cylinder (5), and the limiting protrusion (5-1) is inserted into the interior of the rotation groove (4-1).

4. The blasting dust suppression device according to claim 1, characterized in that: The liquid pushing block (6) is made of 304 stainless steel or 316 stainless steel.

5. The blasting dust suppression device according to claim 1, characterized in that: The limiting latch (7-1) passes through the outer wall of one end of the sealing cover (7) and is sleeved with a ball block (7-2).

6. The blasting dust suppression device according to claim 1, characterized in that: The liquid storage chamber includes liquid storage chamber 1 (5-2), liquid storage chamber 2 (5-3) and liquid storage chamber 3 (5-4); The foam composition is composed of the following components in percentage by weight: Composition: surfactant: 1-5%, foam stabilizer: 0.5-3%, thickener: 0.1-2%, wetting agent: 1-5%, gas generating agent A: 5-15%, gas generating agent B: 5-15% and the balance of water; The surfactant, foam stabilizer, thickener and wetting agent are dissolved in water to prepare a premixed liquid which is then filled into liquid storage chamber 1 (5-2), and the gas generating reactant A and the gas generating reactant B are respectively filled into liquid storage chamber 2 (5-3) and liquid storage chamber 3 (5-4).

7. The blasting dust suppression device according to claim 6, characterized in that: The surfactant is a compound of anionic surfactant and nonionic surfactant, with a mass ratio of 1:1-3:1; The gas generating reactant A is carbonate or bicarbonate, and the gas generating reactant B is an organic acid or an acid salt.

8. The blasting dust suppression device according to claim 7, characterized in that: The anionic surfactant is one or both of sodium dodecylbenzene sulfonate and sodium α-olefin sulfonate; The nonionic surfactant is one or two of fatty alcohol polyoxyethylene ether and coconut oil polyoxyethylene ether; The gas generating reactant A is sodium bicarbonate, and the gas generating reactant B is citric acid or tartaric acid.

9. The blasting dust suppression device according to claim 6, characterized in that: The foam stabilizer is one or both of lauryl betaine and cocamidopropyl betaine; The thickener is polyacrylamide or sodium carboxymethyl cellulose with a molecular weight of 500,000 to 1,000,000; The wetting agent is one or both of propylene glycol and glycerol.

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