Smoke exhaust fireproof valve with filtering mechanism

Abstract

The utility model relates to the technical field of smoke exhaust fireproof valves, in particular to a smoke exhaust fireproof valve with a filtering mechanism, which comprises a smoke exhaust pipe, a water storage frame fixedly connected with the inner wall of the smoke exhaust pipe, and a filtering plate fixedly connected with the inner wall of the smoke exhaust pipe. The cleaning mechanism comprises a round frame rotationally connected to the inner wall of the filter plate; according to the device, through a water pump, a water storage frame, a round frame and a mounting frame, a nozzle in annular movement sprays water to the surfaces of a filter plate and a scraper, the flushing effect on the filter plate and the scraper is guaranteed, through an abutting block and a blocking pad, the scraper transversely moves in the mounting frame, attached impurities are shaken off in the back-and-forth movement of the scraper, and the cleaning effect of the filter plate and the scraper is guaranteed. Compared with an existing mode that the impurities attached to the scraping plate are prone to being attached to the filter plate again, in the mode, the scraping plate is cleaned in time, the impurities are prevented from being attached to the filter plate again, and the smoke filtering effect of the filtering mechanism is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of smoke exhaust fire damper technology, and in particular to a smoke exhaust fire damper with a filtering mechanism. Background Technology

[0002] A smoke exhaust fire damper is a device used to prevent the spread of fire. It is installed on the duct of a smoke exhaust system and is normally open. In the event of a fire, it automatically closes when the gas temperature inside the duct reaches 280°C, thus acting as a smoke and fire barrier. Simultaneously, it can also automatically control the opening and closing of the valve based on the smoke concentration, thereby controlling the flow of smoke.

[0003] According to the search, the Chinese patent "A Smoke Exhaust Fireproof Valve" authorized announcement number "CN221003800U" uses a rotating scraper to scrape the filter plate, causing the dust on the filter plate to fall into the water storage tank. The water will absorb the dust, preventing the dust from clogging the filter plate.

[0004] In the aforementioned application, some dust adheres to the scraper. Scraping the filter plate with the scraper can easily cause the dust to re-adhere to the filter plate, thereby affecting the filter plate's ability to filter flue gas.

[0005] Therefore, a smoke exhaust fire damper with a filtering mechanism is proposed to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a smoke exhaust fire damper with a filtration mechanism to solve the above-mentioned problems, thereby improving the problem of dust re-adhering to the filter plate.

[0007] This utility model achieves the above-mentioned objective through the following technical solution: a smoke exhaust fire damper with a filtration mechanism, comprising: a smoke exhaust pipe, a water storage frame fixedly connected to the inner wall of the smoke exhaust pipe, and a filter plate fixedly connected to the inner wall of the smoke exhaust pipe; a cleaning mechanism, comprising a circular frame rotatably connected to the inner wall of the filter plate, mounting frames fixedly connected to the upper and lower ends of the surface of the circular frame, a plurality of nozzles connected to one side of the mounting frame, a scraper slidably connected to the inner wall of the mounting frame, the surface of the scraper contacting one end of the filter plate, a water pump connected to the rear end of the water storage frame, the inner wall of the circular frame rotatably connected to the upper surface of the water pump, a stop block fixedly connected to the end of the scraper, and annularly distributed baffles fixedly connected to one end of the filter plate. The system utilizes a water pump, water storage frame, circular frame, and mounting frame to spray water onto the filter plates and scraper surfaces via a rotating nozzle, thereby expanding the spraying range and ensuring effective rinsing of the filter plates and scraper. The system also incorporates a stop block and baffle to enable the scraper to move laterally within the mounting frame, shaking off adhering impurities as it moves back and forth. This reduces the area of ​​impurities on the scraper, preventing them from re-adhering to the filter plates and ensuring the filtration efficiency of the system.

[0008] Preferably, a first bevel gear is fixedly connected to one end of the circular frame, and the upper surface of the water pump extends through and to the inner wall of the first bevel gear. A second bevel gear is meshed with one end of the first bevel gear, and a motor is fixedly connected to one end of the second bevel gear. Through the motor, the first bevel gear, and the second bevel gear, the circular frame rotates, driving the scraper and nozzle to move in a circular motion. This allows the circularly moving scraper to scrape the filter plate, and the water sprayed from the nozzle thoroughly washes the filter plate and the scraper.

[0009] Preferably, two springs are fixedly connected to one side of the inner wall of the mounting frame, and the other end of the springs is fixedly connected to one side of the scraper.

[0010] Preferably, elastic impact rods are fixedly connected to both sides of the inner wall of the mounting frame. The springs and elastic impact rods increase the lateral movement of the scraper within the mounting frame, facilitating the removal of impurities attached to the scraper.

[0011] Preferably, a filter screen is fixedly connected to the inner wall of the water storage frame, and the bottom of the filter screen forms an angle with the horizontal plane. The downward-sloping filter screen filters the water drawn from the water pump into the storage frame, reduces the area of ​​impurities in the water adhering to the filter screen, and prevents impurities in the water from being sprayed onto the filter plate and scraper through the nozzles.

[0012] Preferably, a water guide plate is fixedly connected to the lower end of the inner wall of the exhaust pipe, and the bottom of the water guide plate forms an angle with the horizontal plane.

[0013] Preferably, a water guide frame is fixedly connected to the inner bottom wall of the exhaust pipe, and a one-way drain pipe is connected to the bottom of the water guide frame. The bottom end of the one-way drain pipe is connected to the inner wall of the water storage frame. Through the water guide plate, the water sprayed by the nozzle is quickly guided into the water guide frame, and the one-way exhaust pipe guides the water collected in the water guide frame to the water storage frame, allowing the water to be reused and thus reducing water waste.

[0014] Preferably, a support frame is fixedly connected to the inner wall of the exhaust pipe, the surface of the first bevel gear is rotatably connected to the inner wall of the support frame, and the surface of the motor is fixedly connected to the inner wall of the support frame. The support frame provides support and protection for the first bevel gear, the second bevel gear, and the motor, preventing impurities from adhering to them.

[0015] The beneficial effects of this utility model are:

[0016] 1. By using a water pump, water storage frame, circular frame and mounting frame, the nozzles in a circular movement spray water onto the surface of the filter plate and scraper, ensuring the rinsing effect of the filter plate and scraper. By using abutment blocks and baffles, the scraper can move laterally within the mounting frame, shaking off the attached impurities as the scraper moves back and forth, reducing the area of ​​impurities attached to the scraper. Compared with existing scrapers where impurities are easy to re-adhere to the filter plate, this method achieves timely cleaning of the scraper, avoids impurities from re-adheding to the filter plate, and ensures the filtering effect of the filtration mechanism on flue gas.

[0017] 2. Through the motor, the first bevel gear and the second bevel gear, the circular frame rotates, driving the scraper and nozzle to move in a ring. This allows the circularly moving scraper to scrape the filter plate, and the water sprayed from the nozzle to thoroughly wash the filter plate and the scraper. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the exhaust pipe, water storage frame, and water guide plate of this utility model;

[0020] Figure 3 This is a schematic diagram of the cleaning mechanism structure of this utility model;

[0021] Figure 4 for Figure 3 A magnified view of A in the middle.

[0022] In the diagram: 1. Exhaust pipe; 2. Filter plate; 3. Water storage frame; 4. Cleaning mechanism; 41. Circular frame; 42. Mounting frame; 43. Nozzle; 44. Scraper; 45. Water pump; 46. Spring; 47. Elastic impact rod; 48. Abutment block; 49. Baffle; 410. Water guide frame; 411. One-way drain pipe; 412. Filter screen; 413. Water guide plate; 414. First bevel gear; 415. Second bevel gear; 416. Motor; 417. Support frame. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In practical implementation: such as Figure 1-4As shown, a smoke exhaust fire damper with a filtering mechanism includes: a smoke exhaust pipe 1, a water storage frame 3 fixedly connected to the inner wall of the smoke exhaust pipe 1, and a filter plate 2 fixedly connected to the inner wall of the smoke exhaust pipe 1; a cleaning mechanism 4, which includes a circular frame 41 rotatably connected to the inner wall of the filter plate 2, mounting frames 42 fixedly connected to the upper and lower ends of the surface of the circular frame 41, a plurality of nozzles 43 connected to one side of the mounting frame 42, and a scraper 44 slidably connected to the inner wall of the mounting frame 42. One end of the filter plate 2 is in contact with the water storage frame 3. The rear end of the water storage frame 3 is connected to the water pump 45. The inner wall of the circular frame 41 is rotatably connected to the upper surface of the water pump 45. The end of the scraper 44 is fixedly connected to the stop block 48. One end of the filter plate 2 is fixedly connected to the ring-shaped baffle 49. Two springs 46 are fixedly connected to one side of the inner wall of the mounting frame 42. The other end of the springs 46 is fixedly connected to one side of the scraper 44. Both sides of the inner wall of the mounting frame 42 are fixedly connected to the elastic impact rods 47. The elastic impact rods 47 and the baffles 49 are made of silicone.

[0025] The surface of smoke exhaust duct 1 is equipped with a smoke exhaust fire damper. The working principle of the smoke exhaust fire damper is mainly based on its internal temperature sensor, smoke sensor, and controller. When the gas temperature inside the duct reaches a preset 280℃, the temperature sensor sends a signal. Upon receiving the signal, the controller automatically closes the valve, thereby cutting off the flow path of smoke and preventing further spread of the fire. Furthermore, when the smoke concentration exceeds a set threshold, the controller will also automatically open the valve, allowing smoke to flow out of the room and reducing the indoor smoke concentration. Smoke exhaust fire dampers are relatively mature devices; specific models can be selected according to actual needs and will not be elaborated upon here.

[0026] A smoke sensor is provided on the inner top wall of the exhaust pipe 1, a sealed bearing is fixedly connected to the inner wall of the circular frame 41, and the upper surface of the water pump 45 is fixedly connected to the inner edge of the sealed bearing.

[0027] The smoke first passes through the filter plate 2 and the smoke sensor. When the smoke concentration exceeds the set threshold, the smoke sensor will send a signal to the smoke exhaust fire damper, which will then automatically open the smoke exhaust fire damper and the water pump 45, allowing the smoke filtered by the filter plate 2 to be discharged through the smoke exhaust pipe 1.

[0028] The drive frame 41 rotates, causing the mounting frame 42 and scraper 44 to move in a ring. The ring-moving scraper 44 scrapes impurities on the filter plate 2 and causes the abutment 48 to move in a ring, causing the scraped impurities to fall into the water storage frame 3. The abutment 48 moves to one of the baffles 49, and the baffle 49 pushes the abutment 48 and scraper 44 to move laterally. The lateral movement of the scraper 44 stretches the spring 46, and the abutment 48 continues to move closer to the baffle 49. Because the baffle 49 is flexible, it deforms, thereby causing the abutment 48 to move closer to the baffle 49. 48 passes the baffle 49. At this time, the elastic force of the spring 46 pushes the scraper 44 to reset, causing the scraper 44 to move back and forth in the mounting frame 42 and hit one of the elastic impact rods 47 on one side. This increases the range of the scraper 44's back and forth movement, causing the attached impurities to fall off. The water pump 45 draws water from the water storage frame 3 and delivers it to the circular frame 41. The water in the circular frame 41 flows through the mounting frame 42 to each nozzle 43. The nozzles 43, which are moving in a ring, expand the range of water sprayed under the action of centrifugation, thus rinsing the scraper 44 and the filter plate 2.

[0029] like Figure 3 As shown, a first bevel gear 414 is fixedly connected to one end of the circular frame 41. The upper surface of the water pump 45 extends through and to the inner wall of the first bevel gear 414. A second bevel gear 415 is meshed with one end of the first bevel gear 414. A motor 416 is fixedly connected to one end of the second bevel gear 415. A support frame 417 is fixedly connected to the inner wall of the exhaust pipe 1. The surface of the first bevel gear 414 is rotatably connected to the inner wall of the support frame 417. The surface of the motor 416 is fixedly connected to the inner wall of the support frame 417.

[0030] like Figure 2 As shown, a filter screen 412 is fixedly connected to the inner wall of the water storage frame 3. The bottom of the filter screen 412 forms an angle with the horizontal plane. A water guide plate 413 is fixedly connected to the lower end of the inner wall of the exhaust pipe 1. The bottom of the water guide plate 413 forms an angle with the horizontal plane. A water guide frame 410 is fixedly connected to the inner bottom wall of the exhaust pipe 1. A one-way drain pipe 411 is connected to the bottom of the water guide frame 410. The bottom end of the one-way drain pipe 411 is connected to the inner wall of the water storage frame 3. Water can be periodically supplied to the water storage frame 3. The specific water supply method is not described in detail here.

[0031] The one-way drain pipe 411 includes a drain pipe and a one-way valve. The one-way valve is embedded in the surface of the drain pipe and is used to prevent water in the water storage frame 3 from flowing into the water guide frame 410 through the drain pipe.

[0032] The water sprayed by nozzle 43 partially passes through filter plate 2 and splashes onto water guide plate 413. Because water guide plate 413 is inclined from top to bottom, the splashed water is quickly guided to water guide frame 410. The water collected in water guide frame 410 flows to the top of filter screen 412 through one-way drain pipe 411. Filter screen 412 filters the water drawn by water pump 45 and prevents impurities from being pumped into circular frame 41.

[0033] When in use, the motor 416 is automatically turned on. The output shaft of the motor 416 rotates, which drives the circular frame 41 to rotate through the second bevel gear 415 and the first bevel gear 414. The circular frame 41 drives the mounting frame 42 and the scraper 44 to move in a ring. The circularly moving scraper 44 scrapes the impurities on the filter plate 2 and drives the abutment block 48 to move in a ring, causing the scraped impurities to fall into the water storage frame 3. The abutment block 48 moves to one of the baffles 49, causing the abutment block 48 and the scraper 44 to move laterally and stretch the spring 46. When the abutment block 48 passes one of the baffles 49, the elastic force of the spring 46 pushes the scraper 44 to reset and hit one of the elastic impact rods 47 on one side, thereby shaking off the attached impurities. The water pump 45 draws water from the water storage frame 3 and delivers it to the circular frame 41. The water in the circular frame 41 flows through the mounting frame 42 to each nozzle 43. The nozzles 43, moving in a ring, expand the spray range under the action of centrifugal force, rinsing the scraper 44 and the filter plate 2.

[0034] It should be noted that the exhaust pipe 1, filter plate 2, water storage frame 3, nozzle 43, water pump 45, motor 416, sealed bearing, smoke sensor, and one-way drain pipe 411 mentioned above are all components with relatively mature existing technology. The specific models can be selected according to actual needs. At the same time, the smoke sensor, water pump 45 and motor 416 can be powered by the built-in power supply or by the mains power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A smoke exhaust fire damper with a filtering mechanism, characterized in that, include: A smoke exhaust pipe (1) is provided, and a water storage frame (3) is fixedly connected to the inner wall of the smoke exhaust pipe (1). A filter plate (2) is fixedly connected to the inner wall of the smoke exhaust pipe (1). The cleaning mechanism (4) includes a circular frame (41) rotatably connected to the inner wall of the filter plate (2). The upper and lower ends of the surface of the circular frame (41) are fixedly connected to the mounting frame (42). One side of the mounting frame (42) is connected to a plurality of nozzles (43). The inner wall of the mounting frame (42) is slidably connected to a scraper (44). The surface of the scraper (44) contacts one end of the filter plate (2). The rear end of the water storage frame (3) is connected to a water pump (45). The inner wall of the circular frame (41) is rotatably connected to the upper surface of the water pump (45). The end of the scraper (44) is fixedly connected to a stop block (48). One end of the filter plate (2) is fixedly connected to a ring-shaped baffle (49).

2. A smoke exhaust fire damper with a filtering mechanism according to claim 1, characterized in that: One end of the circular frame (41) is fixedly connected to a first bevel gear (414), the upper surface of the water pump (45) extends through and to the inner wall of the first bevel gear (414), one end of the first bevel gear (414) is meshed with a second bevel gear (415), and one end of the second bevel gear (415) is fixedly connected to a motor (416).

3. A smoke exhaust fire damper with a filtering mechanism according to claim 1, characterized in that: Two springs (46) are fixedly connected to one side of the inner wall of the mounting frame (42), and the other end of the springs (46) is fixedly connected to one side of the scraper (44).

4. A smoke exhaust fire damper with a filtering mechanism according to claim 1, characterized in that: Both sides of the inner wall of the mounting frame (42) are fixedly connected with elastic impact rods (47).

5. A smoke exhaust fire damper with a filtering mechanism according to claim 1, characterized in that: A filter screen (412) is fixedly connected to the inner wall of the water storage frame (3), and the bottom of the filter screen (412) forms an angle with the horizontal plane.

6. A smoke exhaust fire damper with a filtering mechanism according to claim 1, characterized in that: A water guide plate (413) is fixedly connected to the lower end of the inner wall of the exhaust pipe (1), and the bottom of the water guide plate (413) forms an angle with the horizontal plane.

7. A smoke exhaust fire damper with a filtering mechanism according to claim 1, characterized in that: A water guide frame (410) is fixedly connected to the inner bottom wall of the exhaust pipe (1). A one-way drain pipe (411) is connected to the bottom of the water guide frame (410). The bottom end of the one-way drain pipe (411) is connected to the inner wall of the water storage frame (3).

8. A smoke exhaust fire damper with a filtering mechanism according to claim 2, characterized in that: The inner wall of the exhaust pipe (1) is fixedly connected to a support frame (417), the surface of the first bevel gear (414) is rotatably connected to the inner wall of the support frame (417), and the surface of the motor (416) is fixedly connected to the inner wall of the support frame (417).

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