Explosion-proof area micro-positive pressure ventilation device

Abstract

The utility model discloses an explosion-proof area micro-positive pressure ventilation device, and particularly relates to the technical field of ventilation devices, the explosion-proof area micro-positive pressure ventilation device comprises an air outlet pipe and an air inlet assembly, the air inlet assembly comprises an air inlet pipe, the inside of the air inlet pipe is detachably connected with an explosion-proof fan, the top end of the air inlet pipe is detachably connected with an air filter cartridge, and the air filter cartridge is detachably connected with an air outlet pipe. The top end of the air filter cartridge is detachably connected with a rain shelter, a filter is connected between the bottom end of the air inlet pipe and the top end of the air outlet pipe, a cleaning assembly is arranged below the rain shelter and comprises two cleaning brushes, and the two cleaning brushes make contact with the outer wall of the air filter cartridge. According to the utility model, external air is filtered through the air filter cartridge and the filter so as to ensure that air in an explosion-proof area is clean, and the driving assembly is utilized to drive the two cleaning brushes to rotate, so that impurities adhered to the surface of the air filter cartridge can be scraped off, the air inlet rate is increased, manual cleaning is not needed, and the use is more automatic.

Description

TECHNICAL FIELD

[0001] The utility model relates to a ventilation device technical field more specifically, it is a kind of micro-positive pressure ventilation device in explosion-proof area. BACKGROUND

[0002] Explosion-proof area refers to the area where combustible gas, vapor, dust and other potential explosive hazards exist. Micro-positive pressure refers to maintaining a slightly higher pressure state than the surrounding environment inside the area. The pressure difference is usually between a few pascals and tens of pascals, for example, 20-50 Pa. Its main purpose is to prevent external combustible gases, dust and other hazardous substances from entering the explosion-proof area, thereby reducing the risk of explosion. Currently, explosion-proof areas achieve micro-positive pressure by installing ventilation equipment such as explosion-proof fans. The ventilation equipment delivers clean air filtered into the explosion-proof area. For example, chemical plants will set up ventilation systems to continuously send fresh air into the explosion-proof area inside the plant.

[0003] The current micro-positive pressure ventilation device needs to continuously inject external air into the explosion-proof area, thereby making the internal pressure of the explosion-proof area greater than the external pressure. For example, the prior art with publication number CN220341857U discloses a micro-positive pressure ventilation device for explosion-proof area. The utility model can purify external air by installing medium-efficiency filter screen, HEPA filter screen and activated carbon filter screen, improve the air quality inside the distribution room, and adjust the direction of the air outlet by installing adjusting blades, to avoid direct blowing to the user inside the distribution room and cause discomfort to the user.

[0004] However, the above-mentioned prior art has the following problems when in use: when the explosion-proof fan sucks external air, dust and impurities in the air easily block the gap between the rain cover and the air inlet tube, affecting the air inlet amount, and the staff needs to clean frequently, which is time-consuming and labor-intensive. Therefore, the utility model provides a micro-positive pressure ventilation device for explosion-proof area with anti-blocking function. UTILITY MODEL CONTENT

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a micro-positive pressure ventilation device for explosion-proof area, which filters external gas through air filter cartridge and filter, to ensure the cleanliness of gas in the explosion-proof area. The driving assembly drives two cleaning brushes to rotate, which can scrape off impurities adhering to the surface of the air filter cartridge, improve the air inlet amount, and do not need manual cleaning, making the use more automatic, to solve the problems in the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides following technical scheme: A kind of anti-explosion area slightly positive pressure ventilation device, including air outlet pipe and air intake component, the air intake component includes air inlet pipe, air inlet pipe inside is detachably connected with anti-explosion fan, the top of air inlet pipe is detachably connected with air filter cartridge, the top of air inlet pipe is detachably connected with awning, filter is connected between the bottom of air filter cartridge and the top of air outlet pipe, cleaning assembly is equipped below awning, the cleaning assembly includes two cleaning brushes, two cleaning brushes are all in contact with the outer wall of air filter cartridge, drive assembly for driving the rotation of two cleaning brushes is equipped in the bottom of awning.

[0007] In a preferred embodiment, the outer wall of the two cleaning brushes is provided with a recess, and a camera for monitoring is detachably connected in the recess.

[0008] In a preferred embodiment, an annular mounting groove is formed in the inner wall of the awning, a fixing groove is formed in one side of the bottom of the awning and communicates with the annular mounting groove, and the drive assembly for driving the rotation of the cleaning brush is mounted in the fixing groove.

[0009] In a preferred embodiment, the drive assembly includes a servo motor, the servo motor is fixed in the fixing groove, a gear is fixedly sleeved on the top of the output shaft of the servo motor, an outer gear ring is engaged on one side of the gear, the outer gear ring is arranged in the annular mounting groove, and the two cleaning brushes are detachably connected with the inner wall of the outer gear ring. The cleaning brush can automatically scrape off the impurities on the surface of the air filter cartridge, thereby achieving automatic cleaning without manual cleaning, and the use is very convenient.

[0010] In a preferred embodiment, a protective cover is detachably connected to one side of the bottom of the awning, the protective cover is sleeved on the outer side of the servo motor, and the servo motor is protected by the protective cover, and the worker can also be prevented from being injured by touching the servo motor.

[0011] In a preferred embodiment, an electrically operated regulating air valve for regulating the air outlet is detachably connected to the bottom of the air outlet pipe.

[0012] In a preferred embodiment, a plurality of solar panels are fixedly embedded in the top of the awning, and the plurality of solar panels are arranged in a ring array at the top of the awning. The solar panels can reduce the consumption of electric energy and play a role in energy saving and environmental protection.

[0013] In a preferred embodiment, the outer gear ring is provided with a ring plate at the bottom, the ring plate is detachably connected with the awning, and ash cleaning brushes are detachably connected to both sides of the top of the air filter cartridge.

[0014] The technical effects and advantages of the utility model are as follows:

[0015] 1. The utility model discloses an air filter cartridge and filter filter external gas, by this can guarantee the gas clean in the explosion -proof area, and utilize drive assembly to drive two cleaning brush rotation, by this can scrape off the impurity that sticks to the surface of air filter cartridge, improve the air intake, need not manual cleaning simultaneously, use more automation;

[0016] 2. Through drive assembly drive cleaning brush rotation, the camera on two cleaning brush real -time shooting device around, so that the device suffers malicious destruction, and can improve the security of explosion -proof area. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the whole structure schematic diagram of the utility model;

[0018] Figure 2 It is the whole structure front view of the utility model;

[0019] Figure 3 It is the whole structure bottom view of the utility model;

[0020] Figure 4 It is the rain shelter and air filter cartridge structure diagram of the utility model;

[0021] Figure 5 It is the rain shelter and outer gear ring structure diagram of the utility model;

[0022] Figure 6 It is the outer gear ring and ring plate structure diagram of the utility model.

[0023] The figure mark is: 1, the air outlet pipe;2, the air intake component;21, the air inlet pipe;22, the explosion -proof fan;23, air filter cartridge;24, rain shelter;25, filter;

[0024] 3, cleaning assembly;31, cleaning brush;32, drive assembly;321, servo motor;322, gear;323, outer gear ring;324, ring plate;33, embedded groove;34, camera;

[0025] 4, annular mounting groove;5, fixed groove;6, shield;7, electrically adjusted air damper;8, solar panel;9, dust cleaning brush. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0027] Refer to the instruction manual appendix Figures 1-5 This utility model provides a micro-positive pressure ventilation device for explosion-proof areas, including an air outlet duct 1 and an air inlet assembly 2. The air inlet assembly 2 includes an air inlet duct 21, and an explosion-proof fan 22 is detachably connected inside the air inlet duct 21. The explosion-proof fan 22 is fixed to the inner wall of the air inlet duct 21 by a fixing seat and bolts. The explosion-proof fan 22 is of type B4-72, and this type of explosion-proof fan 22 generally has a capacity between 2900-22750 m3 / h and a total pressure of about 99-3187 Pa. An air inlet is detachably connected to the top of the air inlet duct 21. An air filter cartridge 23 is provided, with a rain shelter 24 detachably connected to its top. A filter 25 is connected between the bottom of the air inlet pipe 21 and the top of the air outlet pipe 1. The filter 25 is an EF type explosion-proof air filter, which can effectively filter dust, solid particles and other impurities in the air and is suitable for ventilation use in this utility model. A cleaning component 3 is provided below the rain shelter 24. The cleaning component 3 includes two cleaning brushes 31, both of which are in contact with the outer wall of the air filter cartridge 23.

[0028] The inner wall of the rain shelter 24 is provided with an annular mounting groove 4. A fixing groove 5, communicating with the annular mounting groove 4, is provided on one side of the bottom of the rain shelter 24. A drive assembly 32 for driving the rotation of two cleaning brushes 31 is provided at the bottom of the rain shelter 24. Specifically, the drive assembly 32 includes a servo motor 321, which is a Siemens S120 servo motor. This servo motor 321 can be programmed with a PLC and can be started at intervals using instructions such as "start-on delay timer" to reduce energy consumption. The servo motor 321 is fixed in the fixing groove 5. A gear 322 is fixedly sleeved on the top of the output shaft of the servo motor 321. An external gear ring 323 meshes with one side of the gear 322. The external gear ring 323 is located in the annular mounting groove 4. A ring plate 324 is provided at the bottom of the external gear ring 323. Specifically, the external gear ring 323 and the ring plate 324 are connected by a bearing 325. Figure 5 and Figure 6 As shown, the bottom end of the outer gear ring 323 is provided with a collar 326. The outer wall of the collar 326 is connected to the inner wall of the bearing 325, and the outer wall of the bearing 325 is connected to the inner wall of the ring plate 324, so that there is rolling friction between the outer gear ring 323 and the ring plate 324, which can reduce the friction force when the outer gear ring 323 rotates. The ring plate 324 is detachably connected to the rain shelter 24. The ring plate 324 connects the outer gear ring 323 to the rain shelter 24, which can support the stable rotation of the outer gear ring 323. At the same time, the ring plate 324 can be removed to remove the outer gear ring 323 for replacement. Both cleaning brushes 31 are detachably connected to the inner wall of the outer gear ring 323, which facilitates the removal and replacement of the cleaning brushes 31.

[0029] In actual use, the explosion-proof fan 22 is used to suck fresh air outside, the fresh air is preliminarily filtered through the air filter cylinder 23, and then is delivered to the inside of the explosion-proof area through the filter 25 and the air outlet pipe 1, so that a slight positive pressure is formed in the explosion-proof area, and the combustible gas is prevented from entering the inside of the explosion-proof area, thereby improving the safety of the explosion-proof area. Meanwhile, the servo motor 321 drives the gear 322 to rotate, the gear 322 is engaged with the outer gear ring 323 to drive the two cleaning brushes 31 to rotate, the two cleaning brushes 31 are in contact with the outer wall of the air filter cylinder 23 during the rotation, thereby scraping off the impurities adhered to the surface of the air filter cylinder 23, improving the air inlet capacity, and the device is more automatic to use. The air outlet pipe 1, the air inlet pipe 21, the air filter cylinder 23, the rain shelter 24 and the filter 25 are designed as a detachable structure, which is convenient to disassemble and maintain, and individual parts can be replaced, thereby reducing the use cost.

[0030] In the embodiment, the shroud 6 is detachably connected to one side of the bottom end of the rain shelter 24, and the shroud 6 is sleeved outside the servo motor 321, so that the servo motor 321 is protected, and the staff is prevented from being accidentally touched by the servo motor 321.

[0031] In the embodiment, the electric regulating air valve 7 for adjusting the air outlet capacity is detachably connected to the bottom end of the air outlet pipe 1, the electric regulating air valve 7 is selected from D941W-2.5P, the electric regulating air valve 7 has an actuator which can be configured as OHQ, PSQ and 3810R, and has the advantages of simple structure, large caliber, light weight and convenient operation, the electric regulating air valve 7 can automatically adjust the air outlet capacity, thereby facilitating automatic adjustment.

[0032] In the embodiment, a plurality of battery panels 8 are fixedly embedded at the top end of the rain shelter 24, the plurality of battery panels 8 are arranged in a ring array at the top end of the rain shelter 24, and the battery panels 8 are used to convert solar energy into electric energy, thereby reducing the electric energy consumption of the utility model.

[0033] Referring to the drawings Figures 1-6 The outer wall of each cleaning brush 31 is provided with a recess 33, and a camera 34 for monitoring is detachably connected in the recess 33, the camera 34 is selected from DS-2CD3T47EWDV3-L, the camera 34 has high resolution and good low-light performance, and can be widely applied to various indoor and outdoor monitoring scenes. When the driving assembly 32 drives the cleaning brush 31 to rotate, the camera 34 on the cleaning brush 31 can take pictures around the device in real time, so that the device is prevented from being maliciously damaged.

[0034] And, the air filter cartridge 23 top end both sides can be detachably connected with the dust cleaning brush 9, when the cleaning brush 31 rotates, the dust cleaning brush 9 can scrape off the dust adhered to the surface of the camera 34 when the camera 34 contacts with the dust cleaning brush 9, thereby the influence of dust on the camera 34 can be reduced.

[0035] Finally: the above only for the preferred embodiments of the utility model have, and do not for limiting the utility model, any modification, equivalent replacement, improvement etc. that is made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A micro-positive pressure ventilation device for explosion-proof areas, characterized in that: It includes an air outlet duct (1) and an air inlet assembly (2). The air inlet assembly (2) includes an air inlet duct (21). An explosion-proof fan (22) is detachably connected inside the air inlet duct (21). An air filter cartridge (23) is detachably connected to the top of the air inlet duct (21). A rain cover (24) is detachably connected to the top of the air filter cartridge (23). A filter (25) is connected between the bottom of the air inlet duct (21) and the top of the air outlet duct (1). The rain shelter (24) is provided with a cleaning component (3) below it. The cleaning component (3) includes two cleaning brushes (31). Both cleaning brushes (31) are in contact with the outer wall of the air filter cartridge (23). The bottom of the rain shelter (24) is provided with a driving component (32) for driving the two cleaning brushes (31) to rotate.

2. The explosion-proof area micro-positive pressure ventilation device according to claim 1, characterized in that: Both cleaning brushes (31) have grooves (33) on their outer walls, and a camera (34) for monitoring can be detachably connected inside the grooves (33).

3. The explosion-proof area micro-positive pressure ventilation device according to claim 1, characterized in that: The inner wall of the rain shelter (24) is provided with an annular mounting groove (4), and a fixing groove (5) connected to the annular mounting groove (4) is provided on one side of the bottom end of the rain shelter (24).

4. The explosion-proof area micro-positive pressure ventilation device according to claim 3, characterized in that: The drive assembly (32) includes a servo motor (321), which is fixed in a fixed groove (5). A gear (322) is fixedly sleeved on the top of the output shaft of the servo motor (321). An external gear ring (323) meshes with one side of the gear (322). The external gear ring (323) is located in an annular mounting groove (4). Both cleaning brushes (31) are detachably connected to the inner wall of the external gear ring (323).

5. The explosion-proof area micro-positive pressure ventilation device according to claim 4, characterized in that: The bottom side of the rain shelter (24) is detachably connected to a protective cover (6), which is fitted over the outside of the servo motor (321).

6. The explosion-proof area micro-positive pressure ventilation device according to claim 1, characterized in that: The bottom end of the air outlet pipe (1) is detachably connected to an electric regulating valve (7) for adjusting the air volume.

7. The explosion-proof area micro-positive pressure ventilation device according to claim 1, characterized in that: The top of the rain shelter (24) is fixedly embedded with multiple solar panels (8), which are arranged in a ring array at the top of the rain shelter (24).

8. A micro-positive pressure ventilation device for explosion-proof areas according to claim 4, characterized in that: The bottom end of the outer toothed ring (323) is provided with a ring plate (324), the ring plate (324) is detachably connected to the rain shelter (24), and the top two sides of the air filter cylinder (23) are detachably connected with cleaning brushes (9).

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