Chemical safety ventilation device

Abstract

The utility model relates to the technical field of chemical safety, and discloses a chemical safety ventilation device which comprises a ventilation box and a ventilation fan fixedly installed at one end of the ventilation box through bolts, and an auxiliary assembly is installed in the ventilation box. The auxiliary assembly comprises a partition plate, side plates and an arc-shaped plate, the partition plate is fixed to the center of the interior of the ventilation box, the side plates are symmetrically arranged on the upper side and the lower side of the partition plate, the arc-shaped plate is fixed between the two side plates, and a first ventilation opening is formed in the surface of the arc-shaped plate. When the installation cover is maintained, shutdown operation cannot be carried out, so that environmental pollution caused by gas discharge in the maintenance process is effectively avoided, meanwhile, the working efficiency is improved, the using effect of the device is further improved, and the actual using requirement is met.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical industry safety, in particular to a chemical industry safety ventilation device. Background Technique

[0002] Chemical industry is the abbreviation of "chemical technology", "chemical industry", "chemical engineering", etc. All technologies that use chemical methods to change the composition, structure of substances or synthesize new substances belong to chemical production technology, that is, chemical technology, and the obtained products are called chemical products or chemical industrial products. During the production process, chemical factories usually generate a large amount of waste heat, and according to the specific production process, flammable, explosive and harmful gases may be generated during the production process. To ensure the normal operation of production and the occupational health and safety working environment of operators, normal ventilation is required in the factory building. To prevent harmful substances generated during the production process from spreading to other spaces, local ventilation should also be considered at the parts where the emission amount of harmful substances is relatively concentrated;

[0003] It is found that the publication (announcement) number: CN217274668U discloses a chemical industry safety ventilation device, which discloses "including a ventilation duct, an exhaust fan, an intake fan and a microprocessor. An exhaust fan, an intake fan and a microprocessor are arranged inside the ventilation duct. The ventilation duct includes an exhaust duct and an intake duct. The exhaust duct and the intake duct are arranged up and down. Fixing structures are detachably connected with filter nets at the air inlets and outlets of the exhaust duct and the intake duct. Through the setting of the fixing structure and the filter net and other technical solutions, the filter net can filter and remove impurities from the incoming and outgoing gases, the fixing structure can fix the filter net, and at the same time it is convenient to disassemble the filter net. The high-efficiency filter can filter the gas inside the exhaust duct again. The setting of the activated carbon particle adsorption layer can deodorize the filtered and purified gas again" and other technical effects;

[0004] When the above design is in use, although the filter net can filter and remove impurities from the incoming and outgoing gases, the fixing structure can fix the filter net, and at the same time it is convenient to disassemble the filter net, and the high-efficiency filter can filter the gas inside the exhaust duct again, during the use of this device, when the filtering and treatment mechanism for harmful gases needs to be maintained regularly, it needs to be shut down for operation, and it is impossible to filter the harmful gases generated during the maintenance period, which will still pollute the air and reduce the work efficiency. Therefore, we propose a chemical industry safety ventilation device to solve the above existing problems. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a chemical industry safety ventilation device, which solves the problem that when the mechanism for filtering and treating harmful gases needs to be maintained regularly, it needs to be shut down for operation, and it is impossible to filter the harmful gases generated during the maintenance period, which will still pollute the air.

[0006] To achieve the above object, the utility model is realized by the following technical solutions: A chemical safety ventilation device includes a ventilation box and a ventilation fan fixedly installed at one end of the ventilation box through bolts. An auxiliary component is installed inside the ventilation box. The auxiliary component includes a partition fixed at the center inside the ventilation box, side plates symmetrically arranged on the upper and lower sides of the partition, and an arc plate fixed between the two groups of side plates. A first ventilation opening is formed on the surface of the arc plate. An adjustment cylinder is attached to the arc surface of the arc plate. Two groups of adjustment cylinders are each provided with a second ventilation opening, and the two groups of second ventilation openings are arranged in a 90° offset manner. A rotating rod is fixed between the two groups of adjustment cylinders. The two ends of the rotating rod are respectively rotatably connected to the ventilation box through bearings, and the top end of the rotating rod penetrates the inside of the ventilation box and extends to the outside of the ventilation box. The ventilation box divides the internal cavity into an upper cavity and a lower cavity through the partition, and installation covers are arranged inside the upper cavity and the lower cavity. A filtering and processing mechanism is installed inside the installation cover.

[0007] Preferably, the upper and lower sides of the side plates and the arc plate are respectively in close contact with the inner side walls of the partition and the ventilation box. The outer surface of the installation cover is in contact with the surfaces of the partition and the ventilation box. A handle is fixed on one side of the installation cover.

[0008] Preferably, a first fixed disk is fixed at the top end of the rotating rod. A U-shaped frame is slidably connected inside the first fixed disk. Symmetrically arranged second fixed disks are fixed on the surface of the U-shaped frame. A first spring is sleeved on the surface of the U-shaped frame close to the second fixed disk, and the two ends of the first spring are respectively fixed to the second fixed disk and the first fixed disk. A first jack adapted to the U-shaped frame is formed on the surface of the ventilation box, and a second jack adapted to the U-shaped frame is formed on the surface of the ventilation box.

[0009] Preferably, a moving hole adapted to the U-shaped frame is formed on the surface of the first fixed disk, and the U-shaped frame and the first fixed disk are slidably connected through this moving hole.

[0010] Preferably, a disassembly opening is formed on the surface of the ventilation box close to the installation cover. Symmetrically arranged mounting seats are fixed on the surface of the ventilation box close to the disassembly opening. An L-shaped limiting plate is slidably connected inside the mounting seat. Symmetrically arranged second springs are fixed between the L-shaped limiting plate and the mounting seat. The two groups of L-shaped limiting plates are in close contact and clamped on the side surface of the installation cover, and a clamping groove adapted to the installation cover is formed on the inner side wall of the ventilation box.

[0011] Preferably, a sliding groove adapted to the L-shaped limiting plate is formed on the surface of the mounting seat, and the L-shaped limiting plate and the mounting seat are slidably connected through this sliding groove.

[0012] Beneficial effects

[0013] The utility model provides a chemical safety ventilation device. Compared with the prior art, it has the following beneficial effects:

[0014] For this chemical safety ventilation device, through the auxiliary component, when maintaining the installation cover, the shutdown operation will not be carried out, thus effectively avoiding gas discharge during the maintenance process and causing environmental pollution. At the same time, the work efficiency is improved, the use effect of the device is further improved, and the actual use requirements are met. Brief Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a sectional view of the ventilation box structure of the utility model;

[0017] Figure 3 It is for the utility model Figure 1 Schematic diagram of the enlarged structure at A;

[0018] Figure 4 It is a schematic diagram of the structure of the adjusting cylinder and the second connecting part of the ventilation opening of the utility model;

[0019] Figure 5 It is a sectional view of the mounting seat structure of the utility model;

[0020] Figure 6 It is a schematic diagram of the disassembly structure of the installation cover and the filtration treatment mechanism of the utility model.

[0021] In the figure: 1. Ventilation box; 2. Ventilation fan; 3. Auxiliary component; 301. Partition board; 302. Side plate; 303. Arc plate; 304. First ventilation opening; 305. Adjusting cylinder; 306. Second ventilation opening; 307. Rotating rod; 308. First fixed disk; 309. U-shaped frame; 310. Second fixed disk; 311. First spring; 312. First jack; 313. Second jack; 314. Installation cover; 315. Filtration treatment mechanism; 316. Mounting seat; 317. L-shaped limiting plate; 318. Second spring. Detailed Embodiment

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0023] As Figure 1 shown:

[0024] A chemical safety ventilation device includes a ventilation box 1 and a ventilation fan 2 fixedly installed at one end of the ventilation box 1 by bolts.

[0025] In this embodiment: The existing device {publication (announcement) number}: CN217274668U discloses a chemical safety ventilation device. For this existing main body, this application makes further improvements. For details, refer to the disclosed technology below; To solve the technical problems existing in this existing technology, as disclosed in the background technology above, "When the above design is in use, although the filter screen can filter and remove impurities from the inlet and outlet gases, the fixing structure can fix the filter screen and at the same time facilitate the disassembly of the filter screen, and the high-efficiency filter can filter the gases inside the exhaust pipe again efficiently. However, during the use of this device, when the harmful gas filtration and treatment mechanism 315 needs to be maintained regularly, it is necessary to stop the machine operation, and it is impossible to filter the harmful gases generated during the maintenance period, which will still pollute the air and also reduce the work efficiency." In combination, this problem is obviously a real and relatively difficult problem to solve. In view of this, to solve this technical problem, an auxiliary component 3 is added to this application document, and all the electrical equipment involved in this product is powered by an external power supply.

[0026] It should be noted that: The accessories used in the filtration and treatment mechanism 315 have been disclosed in the publication number CN217274668U, and its use effect can be referred to the publication number CN217274668U (that is, the "nanoscale titanium dioxide mesh plate, high-energy ultraviolet lamp tube, activated carbon particle adsorption layer and filter screen components" disclosed in this existing technology).

[0027] Furthermore:

[0028] As Figures 1 - 6 shown:

[0029] An auxiliary component 3 is installed inside the ventilation box 1. The auxiliary component 3 includes a partition plate 301 fixed at the center inside the ventilation box 1, side plates 302 symmetrically arranged on the upper and lower sides of the partition plate 301, and an arc plate 303 fixed between the two groups of side plates 302. A first ventilation opening 304 is formed on the surface of the arc plate 303. An adjusting cylinder 305 is attached to the arc surface of the arc plate 303. Two groups of adjusting cylinders 305 are each provided with a second ventilation opening 306, and the two second ventilation openings 306 are arranged in a 90° offset manner. A rotating rod 307 is fixed between the two groups of adjusting cylinders 305. The two ends of the rotating rod 307 are respectively rotatably connected to the ventilation box 1 through bearings, and the top end of the rotating rod 307 penetrates the inside of the ventilation box 1 and extends to the outside of the ventilation box 1. The ventilation box 1 divides the internal cavity into an upper cavity and a lower cavity through the partition plate 301. Installation covers 314 are arranged inside the upper cavity and the lower cavity. A filtering and processing mechanism 315 is installed inside the installation covers 314. The upper and lower sides of the side plates 302 and the arc plate 303 are respectively in close contact with the partition plate 301 and the inner wall of the ventilation box 1. The side of the side plate 302 away from the arc plate 303 is also in close contact with the inner wall of the ventilation box 1. The outer surface of the installation cover 314 is in contact with the surfaces of the partition plate 301 and the ventilation box 1. A handle is fixed on one side of the installation cover 314. A first fixed disk 308 is fixed at the top end of the rotating rod 307. A U-shaped frame 309 is slidably connected inside the first fixed disk 308. Symmetrically arranged second fixed disks 310 are fixed on the surface of the U-shaped frame 309. A first spring 311 is sleeved on the side of the U-shaped frame 309 close to the second fixed disk 310. The two ends of the first spring 311 are respectively fixed to the second fixed disk 310 and the first fixed disk 308. A first jack 312 adapted to the U-shaped frame 309 is formed on the surface of the ventilation box 1. A second jack 313 adapted to the U-shaped frame 309 is formed on the surface of the ventilation box 1. A moving hole adapted to the U-shaped frame 309 is formed on the surface of the first fixed disk 308. The U-shaped frame 309 and the first fixed disk 308 are slidably connected through this moving hole.

[0030] In this embodiment: when the chemical safety ventilation device is in use, when it is necessary to clean and maintain the filtering treatment mechanism 315 inside the installation cover 314, during this process, through the operation of the ventilation fan 2, the gas enters the upper chamber and the lower chamber, and at this time, the vent 2 306 opened by the lower chamber regulating cylinder 305 is misaligned with the vent 1 304, thereby blocking the vent 1 304, and the vent 2 306 opened by the upper chamber regulating cylinder 305 corresponds to the vent 1 304, thereby releasing the blockage of the vent 1 304. When the gas passes through the upper chamber and the filtering and processing mechanism 315 to process the gas, the gas in the lower chamber will not be discharged. When it is necessary to clean and maintain the filtering and processing mechanism 315 inside the upper chamber, the U-shaped frame 309 is pulled to move the U-shaped frame 309 out of the socket 1 312, and at the same time, the spring 1 311 is stretched, thereby releasing the position lock of the rotating rod 307, and at the same time rotating the rotating rod 307 to 90 degrees, at this time the U-shaped frame 309 corresponds to the socket 2 313, and then the U-shaped frame 309 is released, and the spring 1 311 is stretched. The spring 1 311 rebounds and inserts the bottom end of the U-shaped frame 309 into the second socket 313 to lock the rotating rod 307 at this position. Through this operation, the adjustment cylinder 305 can be effectively prevented from rotating. At the same time, through the socket 1 312 and the socket 2 313, the vent 2 306 and the vent 1 304 can be quickly matched to improve the use effect of the device. As the rotating rod 307 is rotated to 90 degrees, the vent 2 306 and the vent 1 304 of the upper chamber are misaligned to seal the vent 1 304. Blocked, at this time, the vent 2 306 of the lower chamber corresponds to the vent 1 304, thereby releasing the blockage of the vent 1 304, and the gas can only be discharged from the lower chamber. At this time, the installation cover 314 and the filtering treatment mechanism 315 in the upper chamber can be removed from the ventilation box 1. Through this operation, when the installation cover 314 is maintained, the shutdown operation will not be performed, thereby effectively avoiding the discharge of gas during the maintenance process and causing environmental pollution, while improving work efficiency, further improving the use effect of the device, and meeting actual use needs.

[0031] Going further;

[0032] In an optional embodiment, a disassembly opening is provided on the surface of the ventilation box 1 on one side near the mounting cover 314, and symmetrically arranged mounting seats 316 are fixed on the surface of the ventilation box 1 on one side near the disassembly opening. An L-shaped limit plate 317 is slidably connected inside the mounting seat 316, and symmetrically arranged springs 318 are fixed between the L-shaped limit plate 317 and the mounting seat 316. Two groups of L-shaped limit plates 317 are fit and snap-fitted to the side of the mounting cover 314, and a card groove matched with the mounting cover 314 is provided on the inner side wall of the ventilation box 1, and a sliding groove matched with the L-shaped limit plate 317 is provided on the surface of the mounting seat 316, and the L-shaped limit plate 317 and the mounting seat 316 are slidably connected through this sliding groove.

[0033] In this embodiment, when disassembling the mounting cover 314, by simultaneously sliding two groups of L-shaped limiting plates 317 in the direction away from each other, the L-shaped limiting plates 317 slide in the mounting base 316, and at the same time, the second spring 318 is compressed until the L-shaped limiting plates 317 release the block on the mounting cover 314. By pulling the handle on the mounting cover 314, the mounting cover 314 can drive the filter processing mechanism 315 to be pulled out from the ventilation box 1. Through this operation, the convenience of disassembling the mounting cover 314 is improved, the disassembly and assembly efficiency is higher, and the use effect is better.

[0034] Working principle and usage process of the utility model: For this chemical safety ventilation device, when in use, when it is necessary to clean and maintain the filtration mechanism 315 inside the installation cover 314, during this process, through the operation of the ventilation fan 2, gas enters the upper chamber and the lower chamber. At this time, the second ventilation opening 306 opened in the lower chamber adjusting cylinder 305 is misaligned with the first ventilation opening 304, thereby blocking the first ventilation opening 304, while the second ventilation opening 306 opened in the upper chamber adjusting cylinder 305 corresponds to the first ventilation opening 304, thereby releasing the blockage of the first ventilation opening 304. At this time, the gas passes through the upper chamber and the filtration mechanism 315 to process the gas, and the gas in the lower chamber will not be discharged. When it is necessary to clean and maintain the filtration mechanism 315 inside the upper chamber, by pulling the U-shaped frame 309, the U-shaped frame 309 is removed from the first jack 312, and at the same time, the first spring 311 is stretched, thereby releasing the position lock of the rotating rod 307. At the same time, the rotating rod 307 is rotated 90°. At this time, the U-shaped frame 309 corresponds to the second jack 313. Then, the U-shaped frame 309 is released. At this time, the first spring 311 rebounds and inserts the bottom end of the U-shaped frame 309 into the second jack 313 to lock the rotating rod 307 in this position. Through this operation, the rotation of the adjusting cylinder 305 can be effectively avoided. At the same time, through the first jack 312 and the second jack 313, the second ventilation opening 306 and the first ventilation opening 304 can be quickly corresponded, improving the use effect of the device. As the rotating rod 307 is rotated to 90°, at this time, the second ventilation opening 306 in the upper chamber is misaligned with the first ventilation opening 304 to block the first ventilation opening 304. At this time, the second ventilation opening 306 in the lower chamber corresponds to the first ventilation opening 304, thereby releasing the blockage of the first ventilation opening 304. At this time, the gas can only be discharged from the lower chamber. At this time, the installation cover 314 and the filtration mechanism 315 in the upper chamber can be disassembled from the ventilation box 1. Through this operation, when maintaining the installation cover 314, there is no need to stop the machine, thereby effectively avoiding gas discharge during the maintenance process and causing environmental pollution. At the same time, the work efficiency is improved, and the use effect of the device is further improved, meeting the actual use requirements. When disassembling the installation cover 314, by simultaneously sliding two groups of L-shaped limit plates 317 in the direction away from each other, the L-shaped limit plates 317 slide in the mounting seat 316, and at the same time, the second spring 318 is compressed until the L-shaped limit plates 317 release the blockage of the installation cover 314. By pulling the handle on the installation cover 314, the installation cover 314 can drive the filtration mechanism 315 to be pulled out of the ventilation box 1. Through this operation, the convenience of disassembling the installation cover 314 is improved, the disassembly and assembly efficiency is higher, and the use effect is better.

[0035] At the same time, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

Claims

1. A chemical safety ventilation device, comprising a ventilation box (1) and a ventilation fan (2) fixedly mounted on one end of the ventilation box (1) by bolts, characterized in that: An auxiliary component (3) is installed inside the ventilation box (1), and the auxiliary component (3) comprises a partition (301) fixed at the center of the ventilation box (1), side panels (302) arranged symmetrically on the upper and lower sides of the partition (301), and an arc-shaped plate (303) fixed between two groups of the side panels (302), a vent first (304) is provided on the surface of the arc-shaped plate (303), an adjustment cylinder (305) is fitted on the arc surface of the arc-shaped plate (303), and the two groups of the adjustment cylinders (305) are both provided with a vent second (306), and the two groups of the adjustment cylinders (305) are provided with a vent second (306). The second ventilation opening (306) is arranged to be offset by 90 degrees. A rotating rod (307) is fixed between the two groups of the adjusting cylinders (305). The two ends of the rotating rod (307) are rotatably connected to the ventilation box (1) through bearings, and the top end of the rotating rod (307) passes through the interior of the ventilation box (1) and extends to the outside of the ventilation box (1). The ventilation box (1) divides the internal chamber into an upper chamber and a lower chamber through a partition (301). The upper chamber and the lower chamber are both provided with mounting covers (314), and a filtering treatment mechanism (315) is installed inside the mounting cover (314).

2. A chemical safety ventilation device according to claim 1, characterized in that: The upper and lower sides of the side plate (302) and the arc-shaped plate (303) are respectively tightly fitted with the inner side walls of the partition plate (301) and the ventilation box (1); the outer surface of the mounting cover (314) is fitted with the surfaces of the partition plate (301) and the ventilation box (1); and a handle is fixed to one side of the mounting cover (314).

3. A chemical safety ventilation device according to claim 1, characterized in that: A fixing plate 1 (308) is fixed to the top of the rotating rod (307), and a U-shaped frame (309) is slidably connected to the interior of the fixing plate 1 (308), and a symmetrically arranged fixing plate 2 (310) is fixed to the surface of the U-shaped frame (309), and a spring 1 (311) is sleeved on the side of the surface of the U-shaped frame (309) close to the fixing plate 2 (310), and the two ends of the spring 1 (311) are respectively fixedly connected to the fixing plate 2 (310) and the fixing plate 1 (308), and a plug hole 1 (312) adapted to the U-shaped frame (309) is provided on the surface of the ventilation box (1), and a plug hole 2 (313) adapted to the U-shaped frame (309) is provided on the surface of the ventilation box (1).

4. A chemical safety ventilation device according to claim 3, characterized in that: The surface of the fixed plate 1 (308) is provided with a moving hole matched with the U-shaped frame (309), and the U-shaped frame (309) and the fixed plate 1 (308) are slidably connected through the moving hole.

5. A chemical safety ventilation device according to claim 1, characterized in that: A disassembly opening is provided on the side of the surface of the ventilation box (1) close to the mounting cover (314), and symmetrically arranged mounting seats (316) are fixed on the side of the surface of the ventilation box (1) close to the disassembly opening. An L-shaped limit plate (317) is slidably connected inside the mounting seat (316), and two symmetrically arranged springs (318) are fixed between the L-shaped limit plate (317) and the mounting seat (316). Two groups of the L-shaped limit plates (317) are fitted and snap-fitted onto the side of the mounting cover (314), and a slot matching the mounting cover (314) is provided on the inner wall of the ventilation box (1).

6. A chemical safety ventilation device according to claim 5, characterized in that: A sliding groove adapted to the L-shaped limiting plate (317) is provided on the surface of the mounting seat (316), and the L-shaped limiting plate (317) and the mounting seat (316) are slidably connected via the sliding groove.

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