Dust explosion demonstration device

Abstract

The invention belongs to the technical field of fire-fighting training demonstration devices, and discloses a dust explosion demonstration device, which comprises a shell, a dust explosion demonstration device and a dust explosion demonstration device, the dust raising mechanism is arranged in the shell; and the discharge tail end of the electric fire maker is located in the shell. The dust explosion simulation device is simple and reasonable in structure, after a certain amount of dust is contained in the shell, the dust raising mechanism is used for simulating air flow to raise the dust in the shell, the electric fire maker is used for simulating a fire source to trigger explosion, explosion gas fire breaks through a paper tape to generate an audio-visual effect, dust explosion is truly simulated, a trainee visually sees dust explosion, and the training effect is good. The dust explosion risk can be deeply learned and rigorously recorded, and the training effect is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of fire training demonstration devices, and in particular relates to a dust explosion demonstration device. Background Art

[0002] With the acceleration of industrialization and urbanization, dust explosion accidents occur frequently around the world, posing a serious threat to people's lives and property. Dust explosions are characterized by strong suddenness, great destructive power, and difficulty in rescue. Once they occur, they often cause heavy casualties and property losses. Therefore, it is particularly important to raise the public and practitioners' awareness of the hazards of dust explosions and strengthen fire training and emergency drills.

[0003] Traditional fire training methods mostly use a combination of theoretical explanations and simulation exercises. However, in the specific field of dust explosions, due to the lack of intuitive and safe demonstration methods, the training effect is often limited and trainees find it difficult to feel the power of dust explosions.

[0004] To remedy this deficiency, the applicant designed a dust explosion demonstration device. Summary of the invention

[0005] In order to overcome the above technical problems, the present invention provides a dust explosion demonstration device, which aims to improve the effect of fire training by simulating the principles and scenarios of dust explosions, and enhance the safety awareness and emergency handling capabilities of trainees, and can be used for dust flammability testing.

[0006] The present invention adopts the following technical solutions: The dust explosion demonstration device comprises: a shell having a bursting hole, wherein a paper tape is arranged at the bursting hole; a dust raising mechanism arranged in the shell; and an electric igniter, wherein a discharge end of the electric igniter is located in the shell.

[0007] Preferably, the blasting port is located at the top of the shell, and a strip conveying mechanism is arranged above the shell. A horizontal pad with holes is provided in the middle of the mechanism. The pad is pressed against the top surface of the shell and the hole is aligned with the blasting port. A left support rod and a winding roller are arranged at the left end of the mechanism, and the winding roller is located below the left support rod. A right support rod and an unwinding roller are arranged at the right end of the mechanism, and the unwinding roller is located below the right support rod. The apexes of the left and right support rods are flush with the top surface of the pad. The mechanism is also provided with a transverse conveyor belt, and the belt surface of the conveyor belt has equidistantly arranged convexities. A transverse groove is provided on the surface of the pad. The conveyor belt is located above the pad but the convexities are not The convex can pass through the groove during the movement of the conveyor belt; the mechanism is also hingedly provided with a pressing cover with a hole, the hinge axis of the pressing cover is horizontal and located on the left side of the conveyor belt, the hinge axis is unidirectionally transmitted and connected to gear one, the left end axis of the conveyor belt is fixedly connected to gear two, and gear one meshes with gear two; the side edge of the paper tape is provided with clamping holes at equal intervals along the length direction, the paper tape is wound around the unwinding roller, then passes through the right support rod, then passes between the pad and the conveyor belt, and then passes through the left bracket and connects to the winding roller; when the pressing cover is lifted up, it drives gear one to drive gear two to drive the conveyor belt through the clamping convex-clamping hole to drive the paper tape to move to the left.

[0008] Preferably, the strip conveying mechanism includes a front end plate and a rear end plate, the two plates are fixedly connected by a ring, the ring is connected to the outer shell, the left support rod, the winding roller, the right support rod, the unwinding roller, and the pad are all connected between the front end plate and the rear end plate, and a crossbeam is also connected between the front end plate and the rear end plate, a lock buckle is provided on the crossbeam, a lock mouth is provided at the right end of the pressing cover, and a paper pressing ring is provided along the outer side of the hole on the bottom surface of the pressing cover; the winding roller is an electric roller, a micro switch 1 is provided on the crossbeam, and the micro switch 1 is triggered after the pressing cover is closed to start the electric roller; the left support rod is connected to the front end plate and the rear end plate in a transverse sliding manner, a micro switch 2 is provided between the left support rod and the rear end plate, and the left support rod moves to the right to trigger the micro switch 2 to stop the electric roller.

[0009] Preferably, the lower part of the shell is connected to a base, the base has a built-in battery and a controller, and the controller is connected to the battery, the dust raising mechanism, the electric lighter, the first micro switch, the second micro switch, and the winding roller.

[0010] Preferably, a remote controller is further included, and the remote controller is wirelessly connected to the controller.

[0011] Preferably, the dust raising mechanism comprises a dust guiding pipe relatively below and a fan relatively above, and the upper end of the dust guiding pipe is connected to the fan.

[0012] Preferably, the outer shell is divided into half shell one and half shell two, and half shell one and half shell two are detachably connected.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention is provided with a shell, a dust raising mechanism, and an electric igniter. The shell is provided with a blasting hole, and a paper tape is provided at the blasting hole. After a certain amount of dust is loaded into the shell, the dust raising mechanism is used to simulate air flow to scatter the dust in the shell, and then the electric igniter is used to simulate the fire source to cause the explosion. The gas flame of the explosion breaks through the paper tape to produce an audio-visual effect, which truly simulates the dust explosion, allowing the trainees to directly see the dust explosion, learn more deeply and remember the danger of dust explosion, and improve the training effect; 2. The strip conveying mechanism provided in the present invention can drive the paper tape to move forward by lifting the pressing cover after a demonstration, and quickly update the damaged paper tape. After the pressing cover is replaced, the new paper tape can be fixed while the winding roller can be driven to wind up the damaged paper tape, so that the paper tape can be updated conveniently and quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the present invention (excluding the strip conveying mechanism); Figure 2 The strip conveying mechanism of the present invention is schematically shown in FIG. Figure 1 ; Figure 3 The strip conveying mechanism of the present invention is schematically shown in FIG. Figure 2 ; Figure 4 yes Figure 3 The enlarged schematic diagram at A in the middle; Figure 5 It is a top view of the present invention. Explanation of the accompanying reference numerals: 1, blasting hole; 2, paper tape; 3, half shell 1; 4, half shell 2; 5, fan; 6, dust guide tube; 7, electric lighter; 8, base; 9, remote control; 10, front end plate; 11, rear end plate; 12, winding roller; 13, left support rod; 14, micro switch 2; 15, hinge shaft; 16, gear 1; 17, pressing cover; 18, lock; 19, right support rod; 20, crossbeam; 21, pad; 22, sleeve ring; 23, unwinding roller; 24, paper pressing ring; 25, gear 2; 26, conveyor belt; 27, cam; 28, groove; 29, micro switch 1; 30, lock. DETAILED DESCRIPTION

[0015] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. Unless otherwise specified, the raw materials and equipment used can be purchased from the market or are commonly used in the art. The methods in the embodiments are conventional methods in the art unless otherwise specified. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0016] The dust explosion demonstration device comprises: a transparent shell, the shell is divided into an upper half shell 1 3 and a lower half shell 2 4, the half shell 1 3 and the half shell 2 4 are vertically connected to form a cylindrical cavity, the half shell 1 3 and the half shell 2 4 have an outward-turned docking ring at the docking edge and are connected by bolts, and the top of the half shell 1 3 has a blasting hole 1; a dust raising mechanism is arranged in the shell, the dust raising direction of the dust raising mechanism is upward, the dust raising mechanism comprises a dust guide pipe 6 relatively below and a fan 5 relatively above, and the upper end of the dust guide pipe 6 is connected to the fan 5; the discharge end of the electric igniter 7 is located in the shell; the bottom of the shell is connected to a base 8, the base 8 has a built-in battery and a controller, the controller is connected to the battery, the dust raising mechanism, the electric igniter 7, the micro switch 1 29, the micro switch 2 14, and the winding roller 12; and a remote control 9 is also included, the remote control 9 is wirelessly connected to the controller, and the fan 5 and the electric igniter 7 are remotely started by the remote control 9 to remotely start the explosion.

[0017] A strip conveying mechanism is arranged above the shell, and the strip conveying mechanism comprises a front end plate 10 and a rear end plate 11. The two plates are in a bridge shape and the bottom ends are fixedly connected to a collar 22, and the collar 22 is sleeved on the shell. A left support rod 13, a winding roller 12, a right support rod 19, an unwinding roller 23, and a pad 21 are connected between the front end plate 10 and the rear end plate 11. The pad 21 with a hole in the middle is pressed against the top surface of the shell and the hole position is aligned with the blasting port 1. The left support rod 13 and the winding roller 12 are located at the left end of the mechanism, and the winding roller 12 is located at the left support rod 13. The right support rod 19 and the unwinding roller 23 are located at the right end of the mechanism below the rod 13, and the unwinding roller 23 is located below the right support rod 19. The apex of the left support rod 13 and the right support rod 19 is flush with the top surface of the pad 21. The mechanism is also provided with two transverse conveyor belts 26 for driving the paper tape 2 to move forward. The two conveyor belts 26 are respectively installed on the front end plate 10 and the rear end plate 11. The belt surface of the conveyor belt 26 has convex protrusions 27 arranged equidistantly along the belt. The surface of the pad 21 is provided with transverse grooves 28. The conveyor belt 26 is located on the pad 21. The upper convex part 27 can pass through the groove 28 during the movement of the conveyor belt 26; the hinge shaft 15 of the pressing cover 17 is horizontal and located on the left side of the two conveyor belts 26, and the two ends of the hinge shaft 15 are rotatably connected to the front plate 10 and the rear plate 11. The hinge shaft 15 is unidirectionally connected to the two gears 16, and the two gears 16 are respectively close to the front plate 10 and the rear plate 11. The left end of the conveyor belt is fixedly connected to the coaxial gear 25, and the gear 16 meshes with the gear 25; the length of the edges of the two sides of the paper tape 2 is The new paper tape 2 is wound around the unwinding roller 23, passes through the right support rod 19, passes between the pad 21 and the conveyor belt 26, and then passes through the left bracket to connect the reel 12; when the cover 17 is lifted up, it drives the gear 16 to drive the gear 2 25 to drive the conveyor belt 26 to drive the paper tape 2 to the left through the cam 27. When the cover 17 is lowered, the gear 16 is prevented from reversing by the ratchet teeth arranged on the two end plates. After the cover 17 is closed, the hole position of the cover body is also aligned with the blasting port.

[0018] A crossbeam 20 is also connected between the front end plate 10 and the rear end plate 11, and a hand-tightened lock buckle 30 is arranged on the crossbeam 20. A lock port 18 is arranged on the right end of the pressing cover 17. After the pressing cover 17 is lowered, the lock buckle 30 is rotated 90° to lock the pressing cover 17. A paper pressing ring 24 is arranged along the outer side of the hole on the bottom surface of the pressing cover 17. After the lower cover is lowered, the paper pressing ring 24 presses the paper tape 2; the winding roller 12 is an electric roller, and a micro switch 29 is arranged on the crossbeam 20. After the pressing cover 17 is closed, the micro switch 29 is touched to start the electric roller; the left support rod 13 is connected to the front end plate 10 and the rear end plate 11 in a transverse sliding manner, and a micro switch 2 14 is arranged between the left support rod 13 and the rear end plate 11. The left support rod 13 moves right to touch the micro switch 2 14 to stop the electric roller.

[0019] The right support rod 19 is two rods with equal height and a gap, and the paper tape 2 passes vertically through the gap.

[0020] Dust explosion demonstration device, when used: A certain amount of dust is poured into the shell in advance. During the demonstration, the fan 5 is started first, and the dust-raising mechanism creates air flow to scatter the dust in the shell. Then the electric igniter 7 is started to create an arc in the shell to simulate a fire source. When the dust explodes, the gas flames that expand during the explosion break through the paper tape 2 to produce audio-visual sound and light effects, and the dust explosion scene is truly demonstrated, allowing trainees to directly see the dust explosion. The transparent shell allows trainees to directly see the entire explosion process. After the demonstration is completed once, the lock buckle 30 is screwed to the horizontal position to release the lock of the pressing cover 17. The lock buckle 30 can pass through the lock port 18 and lift the pressing cover 17. During the lifting process, the hinge shaft 15 drives the gear 1 16 to drive the gear 2 25 to drive the conveyor belt 26 to rotate clockwise, and the used old paper tape 2 is driven to move left through the cooperation of the card convex 27 and the card hole of the paper tape 2, and the new paper on the right side is pulled to the top of the blasting port 1; then the pressing cover 17 is lowered, the pressure ring presses the new paper, and the lock buckle 30 is rotated to lock the pressing cover 17, ready for the next demonstration; after the pressing cover 17 is covered back on the crossbeam 20, the micro switch 1 29 is touched, and the controller starts the winding roller 12 to rotate and rewind the waste paper according to this signal. When the waste paper is tightened, the left support rod 13 triggers the micro switch 2 14 to the right, and the controller stops the winding roller 12 according to the signal of the switch 2.

[0021] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the above embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A dust explosion demonstration device, characterized in that: include: The shell has a bursting hole, and the bursting hole is provided with a paper tape; A dust raising mechanism is arranged in the housing; An electric lighter, the discharge end of the electric lighter is located inside the housing.

2. The dust explosion demonstration device according to claim 1, characterized in that: The blasting hole is located at the top of the shell, and a strip conveying mechanism is arranged above the shell. A horizontal pad with holes is provided in the middle of the mechanism. The pad is pressed on the top surface of the shell and the hole is aligned with the blasting hole. A left support rod and a winding roller are arranged at the left end of the mechanism, and the winding roller is located below the left support rod. A right support rod and an unwinding roller are arranged at the right end of the mechanism, and the unwinding roller is located below the right support rod. The apexes of the left support rod and the right support rod are flush with the top surface of the pad. The mechanism is also provided with a transverse conveyor belt, and the belt surface of the conveyor belt has equidistantly arranged convexities. A transverse groove is provided on the surface of the pad. The conveyor belt is located above the pad but the convexities can be The conveyor belt passes through the groove during its movement; the mechanism is also hingedly provided with a pressing cover with a hole, the hinge axis of the pressing cover is horizontal and located on the left side of the conveyor belt, the hinge axis is unidirectionally transmitted and connected to gear one, the left end axis of the conveyor belt is fixedly connected to gear two, and gear one meshes with gear two; clamping holes are equidistantly provided on the side edge of the paper tape along the length direction, the paper tape is wound around the unwinding roller, then passes through the right support rod, then passes between the pad and the conveyor belt, and then passes through the left bracket and connects to the winding roller; when the pressing cover is lifted up, it drives gear one to drive gear two to drive the conveyor belt through the clamping convex-clamping hole to drive the paper tape to the left.

3. The dust explosion demonstration device according to claim 2, characterized in that: The strip conveying mechanism includes a front end plate and a rear end plate, the two plates are fixedly connected by a ring, the ring is connected to the outer shell, the left support rod, the winding roller, the right support rod, the unwinding roller, and the pad are all connected between the front end plate and the rear end plate, and a crossbeam is also connected between the front end plate and the rear end plate, a lock buckle is arranged on the crossbeam, a lock mouth is arranged at the right end of the pressing cover, and a paper pressing ring is arranged along the outer side of the hole on the bottom surface of the pressing cover; the winding roller is an electric roller, a micro switch 1 is arranged on the crossbeam, and the pressing cover is closed to touch the micro switch 1 to start the electric roller; the left support rod is connected to the front end plate and the rear end plate in a transverse sliding manner, a micro switch 2 is arranged between the left support rod and the rear end plate, and the left support rod moves to the right to touch the micro switch 2 to stop the electric roller.

4. The dust explosion demonstration device according to claim 3, characterized in that: The lower part of the shell is connected with the base, the base has built-in batteries and a controller, and the controller is connected with the battery, the dust raising mechanism, the electric lighter, the first micro switch, the second micro switch and the winding roller.

5. The dust explosion demonstration device according to claim 4, characterized in that: Also included is a remote control, which connects wirelessly to the controller.

6. The dust explosion demonstration device according to claim 4, characterized in that: The dust raising mechanism comprises a dust guiding pipe relatively below and a fan relatively above, and the upper end of the dust guiding pipe is connected to the fan.

7. The dust explosion demonstration device according to claim 1, characterized in that: The dust explosion demonstration device according to claim 1 is characterized in that the outer shell is divided into half shell one and half shell two, and half shell one and half shell two are detachably connected.

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