Anti-spark device and cutting machine for construction engineering

Abstract

This invention discloses a spark-proof device and a cutting machine for construction engineering, belonging to the field of fire prevention technology for cutting machines. The invention includes a collection hood, a quenching component, a collection element, and a vacuum pump connected in sequence. The collection hood is made of a flexible, stretchable material. The quenching component cools and slows down sparks. The collection element is detachably connected to the quenching component and collects sparks that have passed through the quenching component. The vacuum pump provides negative pressure to the quenching component and the collection element. By setting up the collection hood, this invention allows the hood to be stretched before the cutting operation, covering the area to be cut as much as possible, so that most of the generated sparks enter the quenching component through the collection hood, preventing sparks from causing a fire.

Description

Technical Field

[0001] The invention relates to the technical field of fire prevention of cutting machines, and in particular to an anti-spark device and a cutting machine for construction engineering. Background Art

[0002] A cutting machine is a kind of equipment used for mechanical processing, mainly used to cut materials. In construction, the construction space in some locations is relatively small. Due to the large size of the cutting machine itself, the cutting operation is relatively inconvenient. Therefore, in practical applications, a handheld cutting machine is chosen.

[0003] A handheld cutter is an efficient and portable cutting tool, mainly used for cutting various materials, including metal, tiles, glass, wood, etc. By replacing different cutting discs, different materials can be cut. In addition, the handheld cutter can also be used for trimming, punching and other operations.

[0004] When a handheld cutting machine is used to cut metal parts in a small space, the large number of sparks generated cannot be cooled down over a long enough distance and can easily cause a fire. Summary of the invention

[0005] In view of the above-mentioned deficiencies, the present invention provides a spark prevention device and a cutting machine for construction engineering, wherein the device can cool and collect sparks to prevent sparks from causing fires.

[0006] A first aspect of the present invention protects an anti-spark device, the device comprising a collection cover, a quenching assembly, a collection member and a vacuum pump connected in sequence;

[0007] The material of the collection cover is a flexible and telescopic material;

[0008] The quenching component can cool and slow down Mars;

[0009] The collecting piece is detachably connected to the quenching assembly, and the collecting piece collects sparks passing through the quenching assembly;

[0010] The vacuum pump provides negative pressure to the quenching assembly and the collecting member.

[0011] Further, the quenching assembly comprises a sandwich tube, one end of the sandwich tube is connected to the collecting cover, and the other end of the sandwich tube is connected to the collecting member;

[0012] Water can be added into the interlayer of the interlayer tube;

[0013] A rotatable filter disc is arranged in the sandwich tube.

[0014] Further, the filter disc is embedded on the inner wall of the sandwich tube;

[0015] The inner wall of the sandwich tube is provided with drainage holes so that water can flow to the outer peripheral wall of the filter disc.

[0016] Furthermore, the filter disc comprises a ring, a filter screen is arranged on one side of the ring, blades are arranged on the inner wall of the ring, and gas passes through the blades, so that the blades can drive the ring to rotate;

[0017] A through hole is provided on the inner wall of the ring so that the water in the interlayer can flow onto the filter screen.

[0018] Furthermore, an opening is provided on the outer wall of the sandwich tube, and a breathable membrane is provided in the opening.

[0019] Furthermore, a shielding ring is provided in the sandwich tube, and the shielding ring is arranged between the collecting cover and the filter disc.

[0020] Furthermore, an atomizing sheet is provided in the sandwich tube, and the atomizing sheet is arranged between the shielding ring and the filter disc, and one side of the atomizing sheet is in contact with the water in the sandwich.

[0021] Furthermore, the collecting member comprises a collecting bag and a collecting shell sleeved on the outside of the collecting bag.

[0022] A second aspect of the present invention protects a cutting machine for construction engineering, which includes a cutting machine body and the above-mentioned anti-spark device, and the cutting machine body is connected to the anti-spark device through a connecting assembly.

[0023] Furthermore, the connection assembly includes a bracket, and the cutting machine body is movably connected to the anti-spark device through one end of the bracket;

[0024] The other end of the bracket is connected to the curved slideway;

[0025] The bracket is connected to the curved slideway via bolts.

[0026] Beneficial effects: By providing a collecting hood, the present invention can stretch the collecting hood before the cutting operation to wrap the cut position as much as possible, so that most of the generated sparks pass through the collecting hood into the quenching component to prevent the sparks from causing a fire. By providing a quenching component, the sparks can be decelerated and cooled, and the temperature of the sparks can be lowered to pave the way for the collection of sparks. By providing a collecting piece, the sparks processed by the quenching component can be collected to prevent the sparks with residual temperature from falling into the outside world and prevent the occurrence of fire. The vacuum pump has two functions. The first function is to cooperate with the collecting hood to generate negative pressure around the collecting hood, so that the sparks can enter the quenching component more easily. The second function is to generate negative pressure at the collecting piece, so that the sparks processed by the quenching component can be compressed, thereby reducing the occupied space and reducing the frequency of cleaning the collecting piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] in:

[0029] Figure 1 A schematic diagram of the overall structure of a cutting machine for construction engineering in one embodiment of the present invention;

[0030] Figure 2 A front view of a construction engineering cutting machine according to an embodiment of the present invention;

[0031] Figure 3 A partial cross-sectional view of a construction engineering cutting machine according to an embodiment of the present invention;

[0032] Figure 4 for Figure 3 A partial enlarged view of part A;

[0033] Figure 5 This is a schematic diagram of the overall structure of a filter disc in one embodiment of the present invention;

[0034] Figure 6 A rear view of a filter disc according to an embodiment of the present invention;

[0035] Figure 7 for Figure 6 Cross-sectional view of the filter disc in the BB direction;

[0036] In the figure, 1. cutting machine body;

[0037] 2. Anti-spark device; 21. Collection cover; 22. Quenching assembly; 221. Sandwich tube; 2211. Breathable membrane; 2212. Drain hole; 222. Shielding ring; 223. Atomizing sheet; 224. Filter disc; 2241. Ring; 2242. Blade; 2243. Filter screen; 2244. Through hole; 23. Collection piece; 231. Collection bag; 232. Collection shell; 24. Vacuum pump;

[0038] 3. Connecting assembly; 31. Bracket; 32. Bolt; 33. Curved slideway. DETAILED DESCRIPTION

[0039] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] refer to Figure 1 to Figure 6 A first aspect of the present invention protects an anti-spark device, which includes a collection cover 21, a quenching assembly 22, a collection piece 23 and a vacuum pump 24 connected in sequence.

[0041] The material of the collection cover 21 is a flexible telescopic material. Flexible telescopic material does not mean that it can be telescopic itself, but has a telescopic structure. The collection cover 21 itself can be a high temperature resistant material, such as silicone rubber, polyimide or polytetrafluoroethylene. You can also choose ordinary flexible materials such as silicone and latex, and then cover the surface with a layer of high temperature resistant film, which can be a flexible ceramic film, such as zirconium oxide-silicon dioxide (ZrO2-SiO2) nanofibers and montmorillonite (MMT) nanosheets. The film can maintain mechanical stability in the range of -196℃~1000℃ and is suitable for various high temperature environments. No matter which material is selected, steel wire and keel need to be added to the material for auxiliary fixation and telescopic to form a telescopic structure.

[0042] The quenching assembly 22 can cool down and decelerate Mars. Since Mars can exchange heat when it hits the quenching assembly 22, the quenching assembly 22 can decelerate and cool down Mars by blocking it. The quenching assembly 22 can also cool down Mars by adding water. The quenching assembly 22 can also decelerate and cool down Mars by extending the distance of Mars' movement. In short, different methods are selected to decelerate and cool down Mars according to different operating environments.

[0043] The collecting member 23 is detachably connected to the quenching assembly 22, and the collecting member 23 collects sparks passing through the quenching assembly 22. The collecting member 23 is detachably connected, which facilitates the processing of the collected sparks after quenching, that is, metal powder.

[0044] The vacuum pump 24 provides negative pressure for the quenching assembly 22 and the collecting member 23. The vacuum pump 24 is a small vacuum pump with high portability, and can provide negative pressure.

[0045] By setting the collecting cover 21, the present invention can stretch the collecting cover 21 before the cutting operation, wrap the cut position as much as possible, so that most of the generated sparks pass through the collecting cover 21 into the quenching component 22, and prevent the sparks from causing fire. By setting the quenching component 22, the sparks can be decelerated and cooled, and the temperature of the sparks can be reduced, paving the way for the collection of sparks. By setting the collecting piece 23, the sparks processed by the quenching component 22 can be collected, and the sparks with residual temperature can be prevented from falling into the outside world, thus preventing the occurrence of fire. The vacuum pump 24 has two functions. The first function is to cooperate with the collecting cover 21 to generate negative pressure around the collecting cover 21, so that the sparks can enter the quenching component 22 more easily; the second function is to generate negative pressure at the collecting piece 23, so that the sparks processed by the quenching component 22 can be compressed, thereby reducing the occupied space and reducing the cleaning frequency of the collecting piece 23.

[0046] refer to Figure 3 In a specific embodiment, the quenching assembly 22 includes a sandwich tube 221, one end of the sandwich tube 221 is connected to the collecting cover 21, and the other end of the sandwich tube 221 is connected to the collecting member 23. Water can be added to the sandwich of the sandwich tube 221, referring to Figure 3 The bottom of the sandwich tube 221 is provided with an inlet below the filter disc 224, through which water can be added to the sandwich. A rotatable filter disc 224 is provided in the sandwich tube 221.

[0047] The present invention provides a sandwich tube 221, and water can be added to the sandwich. Water has a large specific heat capacity and can absorb heat to cool the sandwich tube 221. At the same time, the filter disc 224 is in contact with the sandwich tube 221, which can also cool the filter disc 224. The filter disc 224 can rotate for two purposes. The first function is to intercept sparks by rotation, which is better than static interception; the second function is to effectively dissipate heat, which can prevent sparks from concentrating on the filter disc 224 and causing local overheating, and can also dissipate heat better during rotation.

[0048] refer to Figure 3 or Figure 4 In a specific embodiment, the filter disc 224 is embedded in the inner wall of the sandwich tube 221. A groove may be provided on the inner wall of the sandwich tube 221, and then the filter disc 224 is placed in the groove to prevent the filter disc 224 from moving along the axial direction of the sandwich tube 221. Alternatively, the inner wall of the sandwich tube 221 may be bent outward to form a receiving space, and then the filter disc 224 may be placed in the receiving space.

[0049] Drain holes 2212 are provided on the inner wall of the sandwich tube 221, so that water can flow to the outer peripheral wall of the filter disc 224. The number of the drain holes 2212 can be set to 1, 2, 3, 4, 5, etc. according to actual conditions. The diameter of each drain hole 2212 can also be set at will according to needs. The purpose of providing multiple drain holes 2212 is to enable the sandwich tube 221 to transport water to the filter disc 224 at all angles.

[0050] In this embodiment, the drainage hole 2212 is provided to allow the water in the interlayer to flow to the outer wall of the filter disc 224. Firstly, it can cool the filter disc 224 so that it can cool down and quench the sparks more quickly; secondly, it can play a certain lubricating role, making the filter disc 224 easier to rotate, thereby intercepting and quenching the sparks.

[0051] refer to Figure 5 and Figure 7 In a specific embodiment, the filter disc 224 includes a ring 2241, a filter screen 2243 is provided on one side of the ring 2241, and blades 2242 are provided on the inner wall of the ring 2241. When the gas passes through the blades 2242, the blades 2242 can push the ring 2241 to rotate. The shape of the blades 2242 is similar to that of a fan. When the gas passes through the blades 2242, the gas can give the blades 2242 a force to drive the ring 2241 to rotate.

[0052] A through hole 2244 is formed on the inner wall of the ring 2241 to allow the water in the interlayer to flow onto the filter screen 2243. Figure 7 It can be seen that there is only one through hole 2244 , and the through hole 2244 is arranged along the radial direction of the ring 2241 .

[0053] In this embodiment, by providing the blades 2242, the flowing gas generated by the vacuum pump 24 can be used to drive the ring 2241 to rotate to block the sparks. By providing the through holes 2244, water can be added to the inner wall of the ring 2241, and the water can flow onto the filter 2243 to dissipate heat from the filter 2243. At the same time, the gas will blow part of the water into the collecting part 23, which can also cool the collecting part 23, so that some sparks that have not been fully cooled can still be cooled by entering the collecting part 23.

[0054] By providing only one through hole 2244, water can flow into the inner wall of the ring 2241 or into the filter screen 2243 only when the through hole 2244 is aligned with the drain hole 2212. The water inflow can be effectively controlled to prevent excessive water. A small amount of water inflow is also to make the water vaporize as much as possible, so that a large amount of heat can be absorbed without causing too much water to enter the collecting member 23.

[0055] refer to Figure 4In a specific embodiment, an opening is provided on the outer wall of the sandwich tube 221, and a breathable membrane 2211 is provided in the opening. The breathable membrane 2211 is a commercially available conventional breathable and waterproof membrane. It can be a polyethylene (PE) membrane, a polypropylene (PP) membrane, or an expanded polytetrafluoroethylene (ePTFE) membrane. In practical applications, the opening area can also be reduced, and a one-way valve can be provided at the opening to balance the air pressure inside and outside the sandwich.

[0056] refer to Figure 3 or Figure 4 In a specific embodiment, a shielding ring 222 is provided in the sandwich tube 221, and the shielding ring 222 is arranged between the collecting cover 21 and the filter disc 224. The number of shielding rings 222 can be 1, 2, 3, 4, etc. The shielding ring 222 is attached to the inner wall of the sandwich tube 221, and the shielding ring 222 is in the shape of a ring sheet, and the ring body of the shielding ring 222 is inclined toward the direction of the filter disc 224. By setting the shielding ring 222, the first function is to block part of the sparks, so that the sparks hit the shielding ring 222 and extinguish; the second function is to guide the movement direction of the sparks, and concentrate the sparks on the filter screen 2243 of the filter disc 224 for quenching. The inclined setting of the shielding ring 222 can also reduce the resistance of the sparks and prevent the sparks from accumulating on the side of the shielding ring 222 away from the filter disc 224.

[0057] refer to Figure 3 In a specific embodiment, an atomizing sheet 223 is provided in the sandwich tube 221, and the atomizing sheet 223 is disposed between the shielding ring 222 and the filter disc 224, and one side of the atomizing sheet 223 contacts the water in the sandwich. The atomizing sheet 223 is an ultrasonic atomizing sheet, and the number of atomizing sheets 223 can be 1, 2, 3, 4, etc. according to actual needs.

[0058] In this embodiment, by providing the atomizing sheet 223, the water in the interlayer can be atomized into water mist and filled in the interlayer tube 221. The water mist has two functions. The first function is to reduce the oxygen content. Sparks are burning metal powders, and the sparks can be extinguished by reducing the oxygen content; the second function is to reduce the temperature. The water mist increases the specific surface area of ​​water, can fully exchange heat with the air, reduce the temperature, and then absorb a large amount of heat from the sparks to extinguish the sparks.

[0059] refer to Figure 3 , Figure 5 and Figure 7 In a specific embodiment, the collecting member 23 includes a collecting bag 231 and a collecting shell 232 sleeved on the outside of the collecting bag 231. The collecting bag 231 is a high temperature resistant dust removal bag, and a dust removal bag resistant to 450°C can be selected. Figure 3After the spark hits the filter 2243, it will accumulate at the bottom of the ring 2241 under the action of gravity. When the ring 2241 rotates, the spark accumulated at the bottom of the ring 2241 can be lifted up and enter the collection bag 231 under the action of the vacuum pump 24. Of course, a high-power vacuum pump 24 can also be selected to provide a large vacuum degree, so that after the spark hits the filter 2243, it is sucked into the collection bag 231 before falling to the bottom of the ring 2241.

[0060] refer to Figure 1~Figure 3 The second aspect of the present invention protects a cutting machine for construction engineering, including a cutting machine body 1 and the above-mentioned anti-spark device, and the cutting machine body 1 is connected to the anti-spark device 2 through a connecting component 3.

[0061] refer to Figure 2 In a specific embodiment, the connecting assembly 3 includes a bracket 31, and the cutting machine body 1 is movably connected to the anti-spark device 2 through one end of the bracket 31. The bracket 31 is an L-shaped bracket, and the short arm of the L-shaped bracket is connected to one end of the anti-spark device 2 close to the collection cover 21. The long arm of the L-shaped bracket is connected to the curved slide 33. The long arm of the L-shaped bracket is connected to the curved slide 33 by a bolt 32. The length of the curved slide 33 is relatively long, so that the movable range of the L-shaped bracket is relatively large, and the cutting range of the cutting machine body 1 can also be relatively large.

[0062] refer to Figure 1 In this embodiment, by setting the bracket 31, the cutting machine body 1 can be limited to prevent it from being misplaced in the horizontal direction, and the cutting machine body 1 can be moved within a specific range in the vertical direction to cut objects of different sizes. By setting the curved slide 33, the stability of the cutting machine body 1 is further increased. In this embodiment, by setting the bracket 31 and the curved slide 33, the movement direction of the sparks is limited to the greatest extent by limiting the cutting machine body 1, so as to prevent the sparks from splashing onto objects and causing fire.

[0063] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. An anti-spark device, characterized in that: It comprises a collecting cover (21), a quenching assembly (22), a collecting member (23) and a vacuum pump (24) which are connected in sequence; The material of the collecting cover (21) is a flexible and retractable material, and the collecting cover (21) is resistant to high temperatures; The quenching component (22) can cool down and decelerate the Mars; The collecting piece (23) is detachably connected to the quenching assembly (22), and the collecting piece (23) collects sparks passing through the quenching assembly (22); The vacuum pump (24) provides negative pressure for the quenching component (22) and the collecting component (23); The quenching assembly (22) comprises a sandwich tube (221), one end of the sandwich tube (221) is connected to the collecting cover (21), and the other end of the sandwich tube (221) is connected to the collecting element (23); Water can be added into the interlayer of the interlayer tube (221); A rotatable filter disc (224) is provided in the sandwich tube (221); The filter disc (224) is embedded on the inner wall of the sandwich tube (221); The inner wall of the sandwich tube (221) is provided with a drainage hole (2212) so that water can flow to the outer peripheral wall of the filter disc (224); The filter disc (224) comprises a circular ring (2241), a filter screen (2243) is provided on one side of the circular ring (2241), blades (2242) are provided on the inner wall of the circular ring (2241), and gas passes through the blades (2242), so that the blades (2242) can push the circular ring (2241) to rotate; A through hole (2244) is provided on the inner wall of the circular ring (2241) so that water in the interlayer can flow onto the filter screen (2243).

2. The anti-spark device according to claim 1, characterized in that: An opening is provided on the outer wall of the sandwich tube (221), and a breathable membrane (2211) is provided in the opening.

3. The anti-spark device according to claim 1, characterized in that: A shielding ring (222) is provided in the sandwich tube (221), and the shielding ring (222) is arranged between the collecting cover (21) and the filter disc (224).

4. The anti-spark device according to claim 3, characterized in that: An atomizing sheet (223) is provided in the sandwich tube (221); the atomizing sheet (223) is arranged between the shielding ring (222) and the filter disc (224); one side of the atomizing sheet (223) is in contact with water in the sandwich.

5. The anti-spark device according to claim 1, characterized in that: The collecting member (23) comprises a collecting bag (231) and a collecting shell (232) sleeved on the outside of the collecting bag (231).

6. A cutting machine for construction engineering, characterized in that: It comprises a cutting machine body (1) and the anti-spark device according to any one of claims 1 to 5, wherein the cutting machine body (1) is connected to the anti-spark device (2) via a connecting assembly (3).

7. The construction engineering cutting machine according to claim 6, characterized in that: The connecting assembly (3) comprises a bracket (31), and the cutting machine body (1) is movably connected to the anti-spark device (2) via one end of the bracket (31); The other end of the bracket (31) is connected to the curved slideway (33); The bracket (31) is connected to the curved slideway (33) via bolts (32).

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