Dust explosion-proof ventilation cavity

Abstract

The utility model relates to a dust explosion-proof ventilation cavity which comprises a ventilation cavity body, two baffles are arranged in the middle of the ventilation cavity body, the lower side of the middle of the ventilation cavity body is of a hollowed-out structure, an atomization assembly is arranged on the upper side of the middle of the ventilation cavity body, the lower side of the middle of the ventilation cavity body is connected with an installation frame, the left portion and the right portion of the installation frame are connected with clamping plates in a sliding mode, and a collection frame is connected between the clamping plates in a clamped mode. The collecting frame is of a detachable connecting structure. Through the inclined and hollowed-out structure in the middle of the ventilation cavity, atomized dust can quickly slide into the collection frame, so that the dust content in the ventilation cavity is reduced, when the water content in the collection frame reaches a threshold value, the color-changing water-absorbing cotton column can timely trigger a visual alarm, and the dust can be quickly cleaned through the detachable connecting structure of the collection frame; meanwhile, a pressure relief channel is rapidly opened through a fuse link at a pressure relief opening, explosive shock waves are directionally released, displacement of the blocking plate is limited through a connecting rope, the secondary damage risk is reduced, and the explosion venting overpressure peak value is rapidly reduced.

Description

Technical Field

[0001] This utility model relates to the field of industrial production technology, and in particular to a dust explosion-proof ventilation cavity. Background Technology

[0002] In industrial production, the explosion risk of combustible dust remains a significant safety hazard. When the dust concentration reaches the explosive limit and an ignition source is present, an explosion is highly likely to occur, potentially leading to equipment damage, personal injury, and production interruption. Currently, dust explosion prevention mainly relies on ventilation systems to reduce dust concentration. This involves using atomizing components inside the ventilation chamber to moisten the dust. The moistened dust particles fall into a collection box, and the explosive energy is released in conjunction with a pressure relief device. However, traditional ventilation chambers often use a straight-through structure, resulting in poor dust settling and an inability to effectively reduce the explosion risk. Furthermore, conventional pressure relief ports use disposable rupture discs or spring valves, which can easily generate metal splatter during an explosion, potentially causing secondary accidents.

[0003] To address the above issues, a dust explosion-proof ventilation cavity has been developed. Utility Model Content

[0004] To overcome the shortcomings of traditional ventilation ducts, which mostly adopt a straight-through structure, resulting in poor dust settling and inability to effectively reduce the risk of explosion, and conventional pressure relief ports using disposable rupture discs or spring valves, which are prone to generating metal splatter during an explosion and easily causing secondary accidents, this utility model provides a dust explosion-proof ventilation duct.

[0005] The technical solution of this utility model is as follows: a dust explosion-proof ventilation cavity, including a ventilation cavity, two baffles in the middle of the ventilation cavity, a hollow structure on the lower side of the middle of the ventilation cavity, an atomizing component on the upper side of the middle of the ventilation cavity, an installation frame connected to the lower side of the middle of the ventilation cavity, and a locking plate slidably connected to the left and right sides of the installation frame. A collection frame is locked between the locking plates, and the collection frame has a detachable connection structure.

[0006] To further explain, it also includes a water outlet pipe, which is connected to the lower front side of the ventilation cavity, and the water outlet pipe is equipped with a color-changing absorbent cotton column.

[0007] Further explanation: It also includes pressure relief ports. The left and right sides of the ventilation cavity are each connected to symmetrical pressure relief ports. There are four pressure relief ports. The left and right sides of the ventilation cavity are each connected to symmetrical fuses. There are four fuses. Each fuse corresponds to an adjacent pressure relief port. Each pressure relief port is connected to an installation pipe. Each pressure relief port is also secured with a blocking plate.

[0008] To further explain, it also includes a connecting rope, which connects the blocking plate to the adjacent mounting tube.

[0009] To further explain, the ventilation cavity has a sloping structure that slopes downwards from the left and right sides toward the center.

[0010] To further explain, the water outlet pipe has an upward-convex inverted U-shaped structure.

[0011] By adopting the above technical solutions, the beneficial effects of this utility model are as follows:

[0012] This invention utilizes a tilted, hollowed-out structure in the center of the ventilation cavity, allowing dust to be atomized and quickly slide into the collection frame, thereby reducing the dust content within the ventilation cavity. When the moisture content in the collection frame reaches a threshold, the color-changing absorbent cotton column can promptly trigger a visual alarm. The detachable connection structure of the collection frame enables rapid dust removal, shortening equipment downtime. Simultaneously, the pressure relief port quickly opens the pressure relief channel via a fusible link, releasing the explosive shock wave in a directional manner, causing the blocking plate to be ejected outwards. The pressure relief port remains open, and the displacement of the blocking plate is restricted by a connecting rope, reducing the risk of secondary injury and rapidly reducing the peak value of the explosion overpressure. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a schematic diagram of the first partial cross-sectional three-dimensional structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the second partial cross-sectional three-dimensional structure of this utility model.

[0016] The markings in the attached diagram are: 1: ventilation cavity, 2: atomizing component, 3: mounting frame, 4: collection frame, 5: clamping plate, 6: water outlet pipe, 7: color-changing absorbent cotton column, 8: pressure relief port, 9: fuse, 10: mounting pipe, 11: blocking plate, 12: connecting rope. Detailed Implementation

[0017] The present invention will now be described more fully below with reference to the accompanying drawings, in which presently preferred embodiments of the invention are shown. However, the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness and to fully convey the scope of the invention to those skilled in the art.

[0018] A dust explosion-proof ventilation cavity, such as Figures 1-3As shown, it includes a ventilation chamber 1, with two baffles in the middle of the ventilation chamber 1. The lower part of the middle of the ventilation chamber 1 has a hollow structure, and the middle of the ventilation chamber 1 has a sloping structure that slopes downward from the left and right sides towards the middle. An atomizing component 2 is provided on the upper part of the middle of the ventilation chamber 1. A mounting frame 3 is connected to the lower part of the middle of the ventilation chamber 1. The left and right sides of the mounting frame 3 are slidably connected to clamping plates 5. A collection frame 4 is clamped between the clamping plates 5. The collection frame 4 has a detachable connection structure. A water outlet pipe 6 is connected to the lower front of the ventilation chamber 1. The structure is an inverted U-shaped structure that bulges upwards. The water outlet pipe 6 is equipped with a color-changing absorbent cotton column 7. The left and right sides of the ventilation chamber 1 are connected to symmetrical pressure relief ports 8. There are 4 pressure relief ports 8. The left and right sides of the ventilation chamber 1 are connected to symmetrical fuse pieces 9. There are 4 fuse pieces 9. Each fuse piece 9 corresponds to the adjacent pressure relief port 8. Each pressure relief port 8 is connected to an installation pipe 10. Each pressure relief port 8 is clamped with a blocking plate 11. A connecting rope 12 is connected between the blocking plate 11 and the adjacent installation pipe 10.

[0019] It should be noted that in environments with combustible dust, explosion-proof treatment of the dust is necessary to prevent explosions. A dust explosion-proof ventilation chamber 1 is an important safety measure. Effective ventilation reduces the concentration of dust in the air, thereby reducing the risk of explosion. When dust-laden airflow enters the ventilation chamber 1, the atomizing component 2 generates water mist, wetting and agglomerating the dust, thus reducing the amount of dust floating inside the ventilation chamber 1. The ventilation chamber 1 employs a double-baffle design. During atomization, the wetted dust is blocked by the baffles and slides into the collection frame 4 through the inclined structure. When the dust-water vapor mixture in the collection frame 4 reaches a threshold, the mixture moves outward through the water outlet pipe 6 and changes color. The absorbent cotton column 7 will trigger a visual alarm. At this time, the card plate 5 can be slid outward to release the collection box from the locked state of the card plate 5, so that the collection frame 4 can be taken out for cleaning or replacement. When an explosion occurs, the temperature and pressure inside the ventilation cavity 1 will rise sharply, and the fuse 9 will break quickly. The powerful airflow will enter the pressure relief port 8 and push the blockage plate 11 outward, thus opening the pressure relief port 8 and achieving the effect of pressure relief, avoiding the powerful explosion wave from causing more serious impact. The connecting rope 12 can also physically restrain the blockage plate 11 when it is pushed outward to prevent the blockage plate 11 from completely leaving the cavity and avoid it from becoming high-speed flying metal fragments that could cause injury to personnel or equipment.

[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A dust explosion-proof ventilation cavity, characterized in that: It includes a ventilation cavity (1), two baffles in the middle of the ventilation cavity (1), a hollow structure on the lower side of the middle of the ventilation cavity (1), an atomizing component (2) on the upper side of the middle of the ventilation cavity (1), an installation frame (3) connected to the lower side of the middle of the ventilation cavity (1), a card plate (5) slidably connected to the left and right sides of the installation frame (3), and a collection frame (4) snapped between the card plates (5), the collection frame (4) having a detachable connection structure.

2. A dust explosion-proof ventilation cavity according to claim 1, characterized in that: It also includes a water outlet pipe (6), which is connected to the lower front side of the ventilation cavity (1), and the water outlet pipe (6) is provided with a color-changing absorbent cotton column (7).

3. A dust explosion-proof ventilation cavity according to claim 1, characterized in that: It also includes pressure relief ports (8). The left and right sides of the ventilation cavity (1) are connected to the pressure relief ports (8) symmetrically arranged front and back. There are 4 pressure relief ports (8). The left and right sides of the ventilation cavity (1) are connected to the fuses (9) symmetrically arranged front and back. There are 4 fuses (9). Each fuse (9) corresponds to an adjacent pressure relief port (8). Each pressure relief port (8) is connected to an installation pipe (10). Each pressure relief port (8) is clamped with a blocking plate (11).

4. A dust explosion-proof ventilation cavity according to claim 3, characterized in that: It also includes a connecting rope (12), which connects the blocking plate (11) to the adjacent mounting tube (10).

5. A dust explosion-proof ventilation cavity according to claim 1, characterized in that: The ventilation cavity (1) has a sloping structure in the middle that slopes downward from the left and right sides toward the middle.

6. A dust explosion-proof ventilation cavity according to claim 2, characterized in that: The water outlet pipe (6) has an inverted U-shaped structure that bulges upwards.

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