Ventilation device for underground fire engineering

Abstract

The utility model relates to the technical field of ventilation devices, in particular to an underground fire engineering ventilation device. According to the technical scheme, the ventilation system comprises a ventilation shaft and further comprises a ventilation pipe fixedly communicated with one side of the ventilation shaft, a filter pipe is arranged in the ventilation pipe, filter screens are fixedly installed in the filter pipe and comprise a low-efficiency filter screen, a medium-efficiency filter screen and a high-efficiency filter screen, and a plurality of sets of cleaning brushes are rotatably installed in the filter pipe. According to the utility model, dust of particles with different sizes can be filtered in a grading manner, fine dust is prevented from entering the fan, the filtering effect is improved, the abrasion to the fan is reduced, and the service life of the fan is prolonged; meanwhile, dust is prevented from being accumulated on the filter screen through the cleaning brushes on the two sides of the filter screen, the permeability of the filter screen is kept, meanwhile, the vibration motor is matched to promote the dust attached to the filter screen to fall off, and the cleaning effect on the filter screen is further enhanced.

Description

Technical Field

[0001] This utility model relates to the field of ventilation device technology, and in particular to a ventilation device for underground fire protection engineering. Background Technology

[0002] Underground fire protection engineering refers to a series of engineering facilities installed to ensure the fire safety of underground buildings. It includes multiple subsystems such as automatic fire alarm systems, fire water supply systems, automatic sprinkler systems, and smoke control systems. Its purpose is to promptly detect fires, control their spread, and provide favorable conditions for personnel evacuation and fire rescue. Underground fire protection engineering ventilation devices mainly refer to ventilation equipment and systems used in underground spaces, including supply and exhaust fans in mechanical ventilation systems and their associated ducts, air outlets, and other components. Existing technology includes an underground fire protection engineering ventilation device comprising a ventilation shaft, a cross-shaped duct, a guide duct, a fan, and filters fixedly installed within the guide duct for dust filtration. Through the coordinated operation of the cross-shaped duct, fan, air guide duct, guide duct, and connecting pipes, smoke and dust generated in the underground fire protection system can be discharged through the cross-shaped duct under the action of the fan, and purified by the filters, preventing large amounts of dust from being drawn into the air guide duct and causing blockages, thus affecting the ventilation and smoke extraction efficiency of the ventilation device.

[0003] In the above process, when a fire occurs, a large amount of dust is discharged through the filter screen along with the smoke. Using a single-layer filter screen to filter the dust, some fine dust particles may pass through the filter screen and be discharged with the smoke. The dust that is not completely filtered will enter the fan, causing wear to the impeller, motor and other components of the fan, reducing the service life of the fan. Therefore, we propose a ventilation device for underground fire protection engineering. Summary of the Invention

[0004] The purpose of this utility model is to address the problems existing in the background technology by proposing a ventilation device for underground fire protection engineering.

[0005] The technical solution of this utility model: A ventilation device for underground fire protection engineering, including a ventilation shaft, and further comprising:

[0006] A ventilation pipe is fixedly connected to one side of the ventilation shaft. A filter pipe is installed inside the ventilation pipe, and a filter screen is fixedly installed inside the filter pipe. The filter screen includes a coarse filter screen, a medium filter screen, and a high-efficiency filter screen.

[0007] Several sets of cleaning brushes are rotatably installed inside the filter tube;

[0008] A collection box connected to the filter tube.

[0009] Optionally, the filter tube is externally fixedly installed with a vibration motor, the filter tube is internally rotatably installed with a rotating shaft, bearings are arranged between the rotating shaft and the filter screen, and the filter tube is fixedly installed on one side with a motor driving the rotating shaft to rotate.

[0010] Optionally, the coarse filter screen, the medium filter screen and the high-efficiency filter screen are fixedly installed in the filter tube in sequence, the filter tube is provided with through holes on both sides, the cleaning brushes are fixedly installed on the rotating shaft, and the cleaning brushes are respectively press-connected to both sides of the filter screen.

[0011] Optionally, the filter tube is fixedly installed at the bottom with a rectangular box, the filter tube is provided at the bottom with a plurality of connecting holes in communication with the rectangular box, the rectangular box is in communication with a connecting pipe at the bottom, the connecting pipe is fixedly installed with a suction pump, and one end of the connecting pipe is in communication with the collecting box.

[0012] Optionally, the ventilation pipe is fixedly installed at the bottom with a cover, the connecting pipe is located in the cover, the fixed plate is fixedly connected between the inner walls of the ventilation well, the fan is rotatably installed at the bottom of the fixed plate, and the motor driving the fan to rotate is fixedly installed at the top of the fixed plate.

[0013] Optionally, the ventilation well is fixedly installed at the top with a rain shelter, a plurality of ventilation openings are formed in the ventilation well, the ventilation openings are fixedly installed with protective nets, and the moving door is rotatably installed on the side of the ventilation well close to the collecting box.

[0014] In summary, the present application has at least one of the following beneficial technical effects:

[0015] The coarse filter screen, the medium filter screen and the high-efficiency filter screen can filter dust of different sizes, avoid fine dust from entering the fan, improve the filtering effect, reduce the wear of the fan and prolong the service life of the fan.

[0016] The cleaning brushes clean both sides of the filter screen at the same time, prevent dust from accumulating on the filter screen, maintain the permeability of the filter screen, cooperate with the vibration motor to make the dust attached to the filter screen fall off, and further enhance the cleaning effect of the filter screen. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 The overall structure schematic view of the present application is given;

[0018] Fig. 2 The internal structure schematic view of the present application is given;

[0019] Fig. 3 It is a front view cross-sectional structure schematic view of the filter tube.

[0020] Mark No. : 1, ventilation well; 2, ventilation pipe; 3, rain shed; 4, protective net; 5, movable door; 6, cover body; 7, fan; 8, motor; 9, collection box; 10, filter pipe; 101, connecting hole; 11, rotating shaft; 12, vibration motor; 13, filter screen; 131, coarse filter screen; 132, medium filter screen; 133, high-efficiency filter screen; 14, motor; 15, rectangular box; 16, connecting pipe; 17, air suction pump; 18, cleaning brush. DETAILED DESCRIPTION

[0021] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0022] The components of the embodiments of the present application generally described and shown in the drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application.

[0023] Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] It should be noted that the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed or inherent to such processes, methods, articles or devices. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0026] In the description of the utility model, it is necessary to explain, unless there is definite stipulation and limitation, the term "installation", "connection", "connect" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirectly connected through the intermediate medium, can be the intercommunication of two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned term in the utility model can be understood according of the specific circumstances.

[0027] Embodiment

[0028] As Figs. 1 to 3 Indicated, the utility model discloses a kind of underground fire engineering ventilation devices, including ventilation shaft 1, rain shelter 3 is fixedly installed on the top of ventilation shaft 1, rain shelter 3 is used to prevent rainwater into ventilation shaft 1, ventilation shaft 1 is opened with multiple groups of ventilation openings, protective screen 4 is fixedly installed in ventilation opening, protective screen 4 is used to prevent external sundries from entering ventilation system, ventilation shaft 1 is rotatably installed with moving door 5 on the side close to collection box 9, moving door 5 is convenient for staff to overhaul inside ventilation shaft 1;

[0029] Wherein, cover 6 is fixedly installed at the bottom of ventilation pipe 2, connecting pipe 16 is located in cover 6, fixed plate is fixedly connected between the inner wall of ventilation shaft 1, fan 7 is rotatably installed at the bottom of fixed plate, motor 8 that drives fan 7 to rotate is fixedly installed at the top of fixed plate, start motor 8, so that fan 7 rotates, form negative pressure in ventilation shaft 1, dust enters filter pipe 10 with smoke through ventilation pipe 2.

[0030] In addition, ventilation shaft 1 side is fixedly connected with ventilation pipe 2, filter pipe 10 is arranged in ventilation pipe 2, filter screen 13 is fixedly installed in filter pipe 10, filter screen 13 includes coarse filter screen 131, medium filter screen 132 and high-efficiency filter screen 133, coarse filter screen 131, medium filter screen 132 and high-efficiency filter screen 133 are fixedly installed in filter pipe 10 in sequence, both sides of filter pipe 10 are provided with through holes, coarse filter screen 131 is preferably wire mesh, is used to filter larger dust and sundries, plays the role of preliminary filtration, medium filter screen 132 is preferably glass fiber material, filters dust particles of medium size, further improves filtering accuracy, high-efficiency filter screen 133 is located in the innermost layer, preferably HEPA high-efficiency air filter material, can filter tiny dust particles, realizes that different size dust can be graded and filtered, avoids that small dust enters fan 7 inside, improves filtering effect, reduces the abrasion of fan 7, prolongs the service life of fan 7;

[0031] In this embodiment, the outer wall of the filter pipe 10 is fixedly installed with a vibration motor 12, the vibration motor 12 is started, so that the filter pipe 10 vibrates, the dust attached to the filter screen 13 is loosened and falls off, and the subsequent cleaning brush 18 is facilitated to clean the filter screen 13;

[0032] Wherein, a plurality of cleaning brushes 18 are rotatably installed in the filter pipe 10, the cleaning brushes 18 are fixedly installed on the rotating shaft 11, the rotating shaft 11 is rotatably installed in the filter pipe 10 on both sides of the filter screen 13, bearings are arranged between the rotating shaft 11 and the filter screen 13, a motor 14 for driving the rotating shaft 11 to rotate is fixedly installed on one side of the filter pipe 10, the motor 14 is started, so that the rotating shaft 11 rotates and drives the plurality of cleaning brushes 18 to rotate and press against the filter screen 13, so that the cleaning brushes 18 located on both sides of the filter screen 13 clean the coarse filter screen 131, the medium filter screen and the high-efficiency filter screen 133 at the same time in the process of rotating, dust is prevented from accumulating on the filter screen 13, and the dust attached to the filter screen 13 is loosened under the cooperation of the vibration motor 12, thereby further enhancing the cleaning effect of the filter screen 13;

[0033] In this embodiment, a rectangular box 15 is fixedly installed at the bottom of the filter pipe 10, a plurality of connecting holes 101 are formed in the bottom of the filter pipe 10 and communicated with the rectangular box 15, the dust cleaned is moved to the bottom of the filter pipe 10 under the action of gravity and vibration force and enters the rectangular box 15 through the connecting holes 101 formed in the bottom of the filter pipe 10, a connecting pipe 16 is communicated with the bottom of the rectangular box 15, a suction pump 17 is fixedly installed on the connecting pipe 16, one end of the connecting pipe 16 is communicated with the collecting box 9, the suction pump 17 is started, so that the cleaned dust enters the collecting box 9 through the connecting pipe 16, dust is prevented from accumulating in the filter pipe 10 and affecting the filtering effect, dust is also collected, and subsequent processing is facilitated.

[0034] Working principle: in the working process of the utility model, the motor 8 is started, so that the fan 7 rotates, negative pressure is formed in the ventilation shaft 1, dust enters the filter pipe 10 along with smoke through the ventilation pipe 2, passes through the coarse filter screen 131, the medium filter screen and the high-efficiency filter screen 133 in sequence, the coarse filter screen 131 filters the relatively large dust particles and sundries in the smoke, the medium filter screen 132 further filters the medium-sized dust particles, and the high-efficiency filter screen 133 is used for filtering the tiny dust particles, after the hierarchical filtering of the three layers of filter screens 13, the purified gas continues to flow and flows to the external environment through the ventilation shaft 1, fine dust is prevented from entering the fan, the filtering effect is improved, the abrasion of the fan is reduced, and the service life of the fan is prolonged;

[0035] Meanwhile, the vibration motor 12 is started to make the filter tube 10 vibrate, to make the dust attached to the filter screen 13 loose and fall off, the motor 14 is started to make the rotating shaft 11 rotate, to drive the several groups of cleaning brushes 18 fixedly connected with the rotating shaft 11 to press against the filter screen 13 and rotate, to make the cleaning brushes 18 located on both sides of the filter screen 13 simultaneously clean the coarse filter screen 131, the medium filter screen and the high-efficiency filter screen 133 in the process of rotating, to prevent the dust from accumulating on the filter screen 13, to keep the permeability of the filter screen 13, and to further enhance the cleaning effect of the filter screen 13 in cooperation with the vibration motor 12 to make the dust attached to the filter screen 13 fall off; the cleaned dust moves to the bottom of the filter tube 10 under the action of gravity and vibration force, and enters the rectangular box 15 through the connecting hole 101 formed at the bottom of the filter tube 10, the dust cleaning pump 17 is started to make the cleaned dust enter the collecting box 9 through the connecting pipe 16, to avoid the dust from accumulating in the filter tube 10 and affecting the filtering effect, to also realize the collection of the dust and facilitate the subsequent treatment.

[0036] The above specific embodiments are only several optional embodiments of the utility model, based on the technical scheme of the utility model and the related inspiration of the above embodiments, the person skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A ventilation device for underground fire protection engineering, comprising a ventilation shaft (1), characterized in that, Also includes: A ventilation pipe (2) is fixedly connected to one side of the ventilation shaft (1). A filter pipe (10) is provided inside the ventilation pipe (2). A filter screen (13) is fixedly installed inside the filter pipe (10). The filter screen (13) includes a coarse filter screen (131), a medium filter screen (132), and a high-efficiency filter screen (133). Several sets of cleaning brushes (18) are rotatably installed inside the filter tube (10); A collection box (9) is connected to the filter tube (10). A vibration motor (12) is fixedly installed on the outer wall of the filter tube (10). A rotating shaft (11) is rotatably installed inside the filter tube (10). Bearings are provided between the rotating shaft (11) and the filter screen (13). A motor (14) that drives the rotating shaft (11) to rotate is fixedly installed on one side of the filter tube (10). A rectangular box (15) is fixedly installed at the bottom of the filter tube (10). Multiple sets of connecting holes (101) connected to the rectangular box (15) are opened at the bottom of the filter tube (10). A connecting pipe (16) is connected to the bottom of the rectangular box (15). An air pump (17) is fixedly installed on the connecting pipe (16). One end of the connecting pipe (16) is connected to the collection box (9).

2. The ventilation device for underground fire protection engineering according to claim 1, characterized in that, The coarse filter (131), medium filter (132), and high efficiency filter (133) are sequentially fixedly installed inside the filter tube (10). The filter tube (10) has through holes on both sides. The cleaning brush (18) is fixedly installed on the rotating shaft (11). The cleaning brush (18) is pressed against both sides of the filter (13).

3. The ventilation device for underground fire protection engineering according to claim 1, characterized in that, The ventilation pipe (2) is fixedly installed with a cover (6) at the bottom. The connecting pipe (16) is located inside the cover (6). A fixing plate is fixedly connected between the two sides of the inner wall of the ventilation shaft (1). A fan (7) is rotatably installed at the bottom of the fixing plate. A motor (8) that drives the fan (7) to rotate is fixedly installed at the top of the fixing plate.

4. A ventilation device for underground fire protection engineering according to claim 1, characterized in that, A rain shelter (3) is fixedly installed on the top of the ventilation shaft (1). Multiple ventilation openings are opened on the ventilation shaft (1). A protective net (4) is fixedly installed inside each ventilation opening. A movable door (5) is rotatably installed on the side of the ventilation shaft (1) near the collection box (9).

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