An air conditioning smoke exhaust fire damper with smoke filtering function

Abstract

The present invention discloses an air-conditioning smoke exhaust fire damper with a smoke filtering function, comprising: a limiting ring, arranged in the smoke exhaust pipe; a valve plate, movably arranged in the limiting ring, the valve plate selectively sealed and connected to the limiting ring; a mounting cylinder, detachably connected in the smoke exhaust pipe and located on one side of the limiting ring; at least two filter screens, spaced apart and arranged in the mounting cylinder; a cleaning device, arranged between the two filter screens, the cleaning device utilizes the airflow in the smoke exhaust pipe to generate vibration to clean the filter screen. In order to improve the convenience of installing and removing the filter screen, this is achieved by detachably connecting the mounting cylinder to the smoke exhaust pipe. When the filter screen needs to be cleaned, it can be removed. In order to prevent the filter screen from being blocked, a cleaning device is arranged between two of the filter screens. The cleaning device removes particles on the filter screen by vibration. As long as there is airflow passing through the smoke exhaust pipe, the filter screen can be cleaned to prevent particles from adhering for a long time.

Description

Technical Field

[0001] The present invention relates to the technical field of smoke exhaust fire dampers, and more particularly to an air-conditioning smoke exhaust fire damper with a smoke filtering function. Background Art

[0002] An air conditioning smoke and fire damper is a device installed in a building's air conditioning system. Its primary function is to automatically close the vents in the event of a fire when the temperature passing through the smoke and fire damper reaches a preset temperature (generally 280 degrees Celsius), reducing the speed and scope of the fire's spread. It also prevents smoke from entering other areas, effectively protecting people and property.

[0003] In the existing technology, smoke exhaust fire dampers use filters to filter the exhausted smoke to reduce pollution to the environment. The filters can effectively filter particulate impurities in the smoke, but at the same time, after long-term use, a large amount of impurities will adhere to the surface of the filters, affecting the filtering effect and smoke exhaust capacity.

[0004] For example, the Chinese utility model patent with the authorization announcement number CN219003863U discloses a smoke filtration mechanism for an air-conditioning smoke exhaust fire damper, comprising: a smoke exhaust duct and a fire damper arranged on the smoke exhaust duct, and further comprising: a baffle fixedly installed in the smoke exhaust duct, with filter holes evenly distributed on the baffle; a rotating rod rotatably installed in the smoke exhaust duct, the rotating rod passing through the baffle, and a cleaning scraper and blades fixedly installed on the rotating rod; and a collection box arranged on the smoke exhaust duct. By adopting the design of the cleaning scraper, when the toxic high-temperature smoke enters the smoke exhaust duct, the rotating rod can be driven to rotate by the blades, thereby driving the cleaning scraper to clean the impurities attached to the surface of the baffle, so that the filter holes on the baffle are not easily clogged by impurities. The cleaned impurities can then be collected by the collection box, thereby preventing the accumulated impurities from affecting the impurity interception efficiency of the baffle.

[0005] The aforementioned patent also presents the following problems: A single baffle for filtering is installed within the smoke exhaust duct. This baffle is fixed to the duct and cannot be removed for cleaning, which can affect the filtration effect over time. Furthermore, prolonged contact and friction between the cleaning strip and the baffle can cause wear, resulting in a reduction in cleaning performance. Therefore, it is necessary to provide an air conditioner smoke exhaust fire damper with a smoke filtering function to at least partially address the problems of the prior art. Summary of the Invention

[0006] The Summary of the Invention introduces a series of simplified concepts that will be further described in the Detailed Description of the Invention. The Summary of the Invention is not intended to limit the key features and essential features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0007] To at least partially solve the above problems, the present invention provides an air-conditioning smoke exhaust fire damper with a smoke filtering function, comprising:

[0008] A limiting ring is arranged in the exhaust pipe;

[0009] a valve plate movably disposed within the limiting ring, the valve plate being selectively sealed and connected to the limiting ring;

[0010] The installation tube is connected to the exhaust pipe and is located on one side of the limit ring;

[0011] At least two filter screens are spaced apart and arranged in the mounting cylinder;

[0012] The cleaning device is arranged between the two filter screens and uses the airflow in the smoke exhaust pipe to generate vibration to clean the filter screens.

[0013] Preferably, the filter screens are provided with three, including:

[0014] A first filter screen, the outer periphery of which is provided with a mounting ring, the mounting ring being detachably connected to the interior of the mounting cylinder;

[0015] Slide blocks are provided on both sides of the mounting ring, an axial slide groove corresponding to the slide block and a rotation groove connected to the axial slide groove are provided in the mounting cylinder, a positioning slot is provided at the end of the rotation slot away from the axial slide groove, and a clamping portion corresponding to the positioning slot is provided on the slider; the clamping portion includes a support spring provided inside the slider and a positioning clamping ball provided at the outer end of the support spring;

[0016] The second filter screen and the third filter screen are both arranged in a positioning sleeve, and the positioning sleeve is threadedly connected to the mounting barrel;

[0017] The cleaning device is arranged between the first filter screen and the second filter screen;

[0018] A handle is provided on the right side of the positioning sleeve. A plurality of groups of holes are evenly arranged on the outer surface of the positioning sleeve, and the holes are arranged between the first filter screen and the second filter screen.

[0019] Preferably, the cleaning device comprises:

[0020] An air inlet pipe is arranged in the mounting tube, a first through hole communicating with the air inlet pipe is provided on the side wall of the mounting tube, a second through hole communicating with the first through hole is provided on the side wall of the smoke exhaust pipe, and the second through hole is communicated with the exhaust port on the smoke exhaust pipe through a connecting pipe;

[0021] The vibration generating component is arranged in the installation cylinder and is connected to the air intake pipe; the two sides of the vibration generating component are respectively in contact with the first filter screen and the second filter screen, and a first spring is provided between the second filter screen and the third filter screen.

[0022] Preferably, the vibration generating component includes:

[0023] A fixed block, wherein an ellipsoidal cavity is provided inside the fixed block, and a plurality of exhaust holes are provided on a side of the ellipsoidal cavity away from the air inlet pipe;

[0024] a plurality of elastic rods symmetrically arranged on the side wall of the ellipsoidal cavity, one end of each elastic rod being located in the ellipsoidal cavity, and an end of each elastic rod extending out of the fixed block being in contact with the first filter screen or the second filter screen;

[0025] There are two trigger spheres, which are movably arranged in the ellipsoidal cavity.

[0026] Preferably, the elastic rod comprises:

[0027] A trigger block, wherein a receiving groove is provided on the side wall of the ellipsoidal cavity, and the trigger block is slidably arranged in the receiving groove;

[0028] A trigger rod is connected to the trigger block, the receiving groove is provided with a third through hole that penetrates the fixed block, and the trigger rod is slidably disposed in the third through hole;

[0029] a second spring connected between the step surface formed by the receiving groove and the third through hole and the trigger block;

[0030] The surfaces of the trigger blocks on the same side that are away from the trigger rod form an ellipsoidal surface.

[0031] Preferably, a flow guide is provided in the end of the air inlet pipe close to the fixed block; the flow guide comprises:

[0032] The flow-guiding sphere has an air vent inside, the axis of which is parallel to the axis of the air inlet pipe; a fourth through hole is provided on the top surface of the flow-guiding sphere;

[0033] The air outlet holes are evenly distributed on one side of the flow-guiding sphere close to the ellipsoidal cavity, and the air outlet holes are respectively connected to the vent hole and the ellipsoidal cavity;

[0034] First air inlet holes are evenly distributed on a side of the guide sphere away from the ellipsoidal cavity, the first air inlet holes are selectively connected to the vent holes, and the first air inlet holes are connected to the air inlet pipe;

[0035] An air intake block is provided in one end of the air vent away from the ellipsoidal cavity, and a second air intake hole is provided in the air intake block for connecting the air vent and the air intake pipe;

[0036] The movable block is slidably arranged in the vent hole. A tapered hole is provided on one side of the movable block close to the air intake block. The diameter of the tapered hole close to one end of the air intake block is larger than the diameter of the other end.

[0037] Preferably, four grooves are evenly arranged on the inner wall of the limit ring, a block is slidingly provided in the groove, a third spring is provided between the block and the groove, the end of the block extending out of the groove is set as a slope on the side away from the filter screen, the outer periphery of the side of the valve plate close to the filter screen is set as a slope, the outer wall of the valve plate is provided with an annular groove, a positioning ring is provided in the movable sleeve of the annular groove, and the cross section of the positioning ring is triangular.

[0038] Preferably, a handle or a driving portion is provided on a side of the valve plate away from the filter screen.

[0039] Preferably, a sealing ring is provided on a side of the valve plate away from the filter screen, and an outer side wall of the sealing ring contacts an outer side wall of the smoke exhaust pipe;

[0040] The side wall of the smoke exhaust pipe is provided with a plurality of exhaust ports, and the exhaust ports are arranged on the side of the limiting ring away from the filter screen; one of the exhaust ports is communicated with the second through hole; when the valve plate is sealed with the limiting ring, the sealing ring seals the exhaust port;

[0041] The air outlet pipe is sleeved on the outside of the smoke exhaust pipe and is communicated with the exhaust port.

[0042] Preferably, the driving unit includes:

[0043] The sleeve is connected to the smoke exhaust pipe through a connecting rod;

[0044] The connecting column is limitedly slidably arranged in the sleeve, one end of which is connected to the valve plate; and the other end is provided with a threaded hole;

[0045] The screw rod is arranged in the threaded hole of the connecting column, and one end of the screw rod is connected to the output end of the driving motor.

[0046] Compared with the prior art, the present invention has at least the following beneficial effects:

[0047] The air conditioner smoke exhaust fire damper with smoke filtering function of the present invention is realized by detachably connecting the mounting cylinder and the smoke exhaust pipe to improve the convenience of installing and removing the filter screen. The mounting cylinder is arranged on the upstream side of the smoke exhaust pipe. The smoke will first pass through the filter screen to filter out particulate impurities, and then be discharged through the gap between the valve plate and the limit ring in the open state, thereby preventing pollution to the environment. When the filter screen needs to be cleaned, it can be removed.

[0048] In order to prevent the filter from being blocked, a cleaning device is set between two of the filters. The cleaning device removes particles on the filter through vibration to prevent particles from adhering to the filter over time. Moreover, as long as there is airflow through the exhaust pipe, the filter can be cleaned to prevent particles from adhering for a long time and making it inconvenient to clean the filter.

[0049] The air-conditioning smoke exhaust fire damper with smoke filtering function described in the present invention, other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by technical personnel in this field through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0051] Figure 1 This is a structural diagram of the air-conditioning smoke exhaust fire damper with smoke filtering function according to the present invention;

[0052] Figure 2 This is a schematic structural diagram of the filter screen in the air-conditioning smoke exhaust fire damper with smoke filtering function according to the present invention;

[0053] Figure 3 for Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0054] Figure 4 This is a schematic diagram of the internal structure of the air-conditioning smoke exhaust fire damper with smoke filtering function according to the present invention;

[0055] Figure 5 for Figure 4 Schematic diagram of a partially enlarged structure;

[0056] Figure 6 This is a schematic diagram of the internal structure of the cleaning component of the air conditioner smoke exhaust fire damper with smoke filtering function when there is no airflow in the air inlet pipe;

[0057] Figure 7 This is a schematic diagram of the internal structure of the cleaning component of the air conditioner smoke exhaust fire damper with smoke filtering function according to the present invention when there is airflow in the air inlet pipe;

[0058] Figure 8 This is a structural schematic diagram of the flow guide member in the air-conditioning smoke exhaust fire damper with smoke filtering function according to the present invention;

[0059] Figure 9This is a structural diagram of the air-conditioning smoke exhaust fire damper with smoke filtering function according to the present invention when the limit ring and the valve plate are in the open state;

[0060] Figure 10 This is a structural diagram of the air-conditioning smoke exhaust fire damper with smoke filtering function according to the present invention when the limit ring and the valve plate are in a closed state;

[0061] Figure 11 This is a schematic structural diagram of the driving portion of the air-conditioning smoke exhaust fire damper with smoke filtering function according to the present invention;

[0062] Figure 12 This is a structural schematic diagram of the valve plate in the air-conditioning smoke exhaust fire damper with smoke filtering function described in the present invention. DETAILED DESCRIPTION

[0063] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0064] It should be understood that terms such as “having”, “including” and “comprising” used herein do not preclude the existence or addition of one or more other elements or combinations thereof.

[0065] like Figure 1 and Figure 4 As shown, the present invention provides an air-conditioning smoke exhaust fire damper with a smoke filtering function, comprising:

[0066] A limiting ring 2 is provided in the exhaust pipe 1;

[0067] The valve plate 3 is movably arranged in the limiting ring 2, and the valve plate 3 is selectively sealed and connected to the limiting ring 2;

[0068] Install the cylinder 4, which is connected to the exhaust pipe 1 and is located on one side of the limiting ring 2;

[0069] At least two filter screens are spaced apart and arranged in the mounting cylinder 4;

[0070] The cleaning device is arranged between the two filter screens. The cleaning device utilizes the airflow in the smoke exhaust pipe 1 to generate vibration to clean the filter screens.

[0071] The valve plate 3 can be manually driven or electrically driven. Under normal circumstances, the valve plate 3 and the limit ring 2 are in the open state. A temperature sensor is provided at the outlet end of the exhaust pipe 1 to sense the temperature of the flue gas in the exhaust pipe 1. If the temperature reaches a preset temperature, generally 280 degrees Celsius, the valve plate 3 and the limit ring 2 are driven to switch to the closed state, and the two are sealed.

[0072] In order to improve the convenience of installing and removing the filter, the installation cylinder 4 is connected to the exhaust pipe 1 by detachable connection. The installation cylinder 4 is arranged on the upstream side of the exhaust pipe 1. The smoke will first pass through the filter to filter out particulate impurities, and then be discharged through the gap between the valve plate 3 and the limit ring 2 in the open state to prevent pollution to the environment. When the filter needs to be cleaned, it can be removed.

[0073] In order to prevent the filter from being blocked, a cleaning device is provided between two of the filters. The cleaning device removes particles on the filter by vibration to prevent particles from adhering to the filter over time. Moreover, as long as there is airflow passing through the smoke exhaust pipe 1, the filter can be cleaned to prevent particles from adhering for a long time and making it inconvenient to clean the filter.

[0074] like Figure 2 and Figure 3 As shown, in one embodiment, the filter screens are provided with three, including:

[0075] The first filter screen 10 has a mounting ring 13 sleeved on its outer periphery, and the mounting ring 13 is detachably connected to the inside of the mounting cylinder 4;

[0076] like Figure 2 As shown, further, sliders 14 are provided on both sides of the mounting ring 13, an axial sliding groove corresponding to the slider 14 and a rotating groove connected to the axial sliding groove are provided in the mounting cylinder 4, a positioning groove is provided at the end of the rotating groove away from the axial sliding groove, and a clamping portion corresponding to the positioning groove is provided on the slider 14; the clamping portion includes a support spring 15 arranged inside the slider 14, and a positioning clamping ball 16 arranged at the outer end of the support spring 15.

[0077] The first filter screen 10 is arranged at the upstream side of the three filter screens, and has the most particulate impurities attached thereto. Therefore, it is detachably connected to the mounting cylinder 4 .

[0078] The second filter screen 11 and the third filter screen 12 are both arranged in a positioning sleeve 17, and the positioning sleeve 17 is threadedly connected to the mounting cylinder 4;

[0079] The cleaning device is arranged between the first filter screen 10 and the second filter screen 11 .

[0080] like Figure 2 As shown, further, a handle 18 is provided on the right side of the positioning sleeve 17 , and a plurality of groups of holes are evenly opened on the outer surface of the positioning sleeve 17 , and the holes are opened between the first filter screen 10 and the second filter screen 11 .

[0081] The second filter screen 11 and the third filter screen 12 are configured to be disassembled simultaneously. The two are fixedly connected to the positioning sleeve 17, and then the positioning sleeve 17 is threadedly connected to the mounting cylinder 4 to facilitate disassembly;

[0082] The cleaning device is arranged between the first filter 10 and the second filter 11, and removes the particulate impurities attached to both by vibration, and the third filter 12 can be arranged to be linked with the second filter 11, thereby cleaning the third filter 12;

[0083] In order to facilitate cleaning, multiple groups of holes are provided on the side wall of the positioning sleeve 17 so that particles falling into the second filter screen 11 and the third filter screen 12 can be discharged from the multiple groups of holes during cleaning, thereby facilitating cleaning.

[0084] like Figure 4 and Figure 5 As shown, in one embodiment, the cleaning device includes:

[0085] The air inlet pipe 5 is arranged in the mounting tube 4. The side wall of the mounting tube 4 is provided with a first through hole 410 communicating with the air inlet pipe 5. The side wall of the smoke exhaust pipe 1 is provided with a second through hole 110 communicating with the first through hole 410. The second through hole 110 is communicated with the exhaust port 120 on the smoke exhaust pipe 1 through the connecting tube 6.

[0086] The vibration generating component 7 is arranged in the mounting tube 4 and is connected to the air intake pipe 5; the two sides of the vibration generating component 7 are respectively in contact with the first filter 10 and the second filter 11, and a first spring 19 is provided between the second filter 11 and the third filter 12.

[0087] The filtered gas will be discharged from the exhaust port 120, so part of the gas discharged from the exhaust port 120 is reused to clean the filter;

[0088] Part of the gas discharged from the exhaust port 120 enters the air intake pipe 5 from the connecting pipe 6 (an electric fan for auxiliary air intake can be set in the connecting pipe 6, which can be turned on for auxiliary air intake when the air flow is small, and does not need to be turned on when the air flow is large), through the second through hole 110 and the first through hole 410, and then the air flow enters the vibration generating component 7 from the air intake pipe 5, causing it to vibrate, and the vibration is transmitted to the first filter 10 and the second filter 11, so that both of them vibrate, and the vibration of the second filter 11 is transmitted to the third filter 12, so that the particles attached to the three filters are cleaned by the vibration, preventing the particles from clogging the filters; the first spring 19 provided between the second filter 11 and the third filter 12 can be replaced by a rod without elasticity, which can better transmit the vibration effect.

[0089] like Figure 6 and Figure 7 As shown, in one embodiment, the vibration generating component 7 includes:

[0090] The fixing block 710 has an ellipsoidal cavity 711 formed therein, and a plurality of exhaust holes are provided on a side of the ellipsoidal cavity 711 away from the air inlet pipe 5;

[0091] A plurality of elastic rods 720 are symmetrically arranged on the side wall of the ellipsoidal cavity 711, one end of each elastic rod 720 is located in the ellipsoidal cavity 711, and the end of each elastic rod 720 extending from the fixing block 710 contacts the first filter screen 10 or the second filter screen 11;

[0092] There are two trigger balls 730 , which are movably arranged in the ellipsoidal cavity 711 .

[0093] Furthermore, the elastic rod 720 includes:

[0094] A trigger block 721, a receiving groove is provided on the side wall of the ellipsoidal cavity 711, and the trigger block 721 is slidably arranged in the receiving groove;

[0095] The trigger rod 722 is connected to the trigger block 721. The receiving groove is provided with a third through hole that penetrates the fixed block 710. The trigger rod 722 is slidably disposed in the third through hole.

[0096] The second spring 723 is connected between the step surface formed by the receiving groove and the third through hole and the trigger block 721;

[0097] The surface of the trigger block 721 on the same side away from the trigger rod 722 forms an ellipsoidal surface.

[0098] like Figure 7 As shown, when air flows into the air inlet pipe 5, the air is blown into the ellipsoidal cavity 711, and the trigger ball 730 in the ellipsoidal cavity 711 is driven by the air flow to start irregular movement, and collides with the trigger block 721. The ellipsoidal surface formed by the trigger block 721 is convenient for contacting the trigger ball 730; then the irregularly moving trigger ball 730 will randomly collide with multiple trigger blocks 721, so that the trigger block 721 drives the trigger rod 722 to push the first filter screen 10 or the second filter screen 11 outward, and the second spring 723 is compressed. The filter screen will vibrate after receiving the thrust, thereby helping to shake off the attached particles; then, under the elastic restoring force of the second spring 723, the trigger block 721 and the trigger rod 722 return to their initial positions. In this way, when the trigger ball 730 collides with different trigger blocks 721 irregularly, the filter screen will vibrate.

[0099] The gas in the ellipsoidal cavity 711 will be discharged from the exhaust hole set on its top. Since there will be horizontal smoke passing through the outside of the exhaust hole, a negative pressure is formed outside the exhaust hole relative to its inside, which helps to drive the airflow in the ellipsoidal cavity 711 to flow to the outside, thus forming an airflow circulation; in addition, the aperture of the exhaust hole is small, and the air is exhausted outward under negative pressure, so particles will not block the exhaust hole, thereby ensuring the stability of the cleaning device.

[0100] like Figure 8 As shown, in one embodiment, a guide member 8 is provided in the end of the air inlet pipe 5 close to the fixing block 710; the guide member 8 includes:

[0101] The guide sphere 810 has an air vent 811 formed therein, the axis of the air vent 811 being parallel to the axis of the air inlet pipe 5; a fourth through hole 812 is formed on the top surface of the guide sphere 810;

[0102] The air outlet holes 820 are evenly distributed on one side of the flow-guiding sphere 810 close to the ellipsoidal cavity 711 , and the air outlet holes 820 are respectively connected to the air vent 811 and the ellipsoidal cavity 711 ;

[0103] First air inlet holes 830 are evenly distributed on a side of the flow-guiding sphere 810 away from the ellipsoidal cavity 711 . The first air inlet holes 830 are selectively connected to the vent holes 811 . The first air inlet holes 830 are connected to the air inlet pipe 5 .

[0104] An air intake block 840 is provided in one end of the air vent 811 away from the ellipsoidal cavity 711 , and a second air intake hole 841 is provided in the air intake block 840 for connecting the air vent 811 and the air intake pipe 5 ;

[0105] The movable block 850 is slidably arranged in the vent hole 811. A conical hole 851 is provided on one side of the movable block 850 close to the air intake block 840. The diameter of the conical hole 851 close to one end of the air intake block 840 is larger than the diameter of the other end.

[0106] In order to increase the probability of the trigger ball 730 hitting the trigger block 721, a flow guide 8 is provided in the air intake pipe 5;

[0107] like Figure 7As shown, the air flow in the air inlet pipe 5 enters the air vent 811 through the first air inlet hole 830 and the second air inlet hole 841, and the air flow from the second air inlet hole 841 blows toward the conical hole 851, causing the movable block 850 to move toward the side close to the ellipsoidal cavity 711. In this way, the air flow can enter the multiple air outlet holes 820 through the air vent 811, and then be discharged from the air outlet holes 820. The air outlet end of the air outlet hole 820 can be set to a trumpet shape, so that the air flow is discharged evenly and dispersedly, so that air flows in different directions are formed in the ellipsoidal cavity 711. In this way, the guide sphere 810 will produce more intense irregular movement, increasing the probability of hitting the trigger block 721.

[0108] In addition, if Figure 6 and Figure 10 As shown, if the valve plate 3 is sealed and connected to the limit ring 2, there is no airflow in the exhaust port 120. At this time, high-temperature flue gas still flows into the smoke exhaust pipe 1, and the airflow will enter from the top of the ellipsoidal cavity 711, and then enter from the fourth through hole 812 on the top surface of the guide sphere 810, pushing the movable block 850 (if installed in the direction shown in the figure, the movable block 850 can move downward under the action of its own gravity), so that the movable block 850 moves downward until it contacts the fixed air intake block 840, and the side wall of the movable block 850 will block the first air intake hole 830 and the second air intake hole 841, thereby preventing high-temperature flue gas or fire in the flue gas from being discharged from the air intake pipe 5.

[0109] like Figure 11 and Figure 12 As shown, in one embodiment, four grooves are evenly arranged on the inner wall of the limit ring 2, a block 210 is slidingly provided in the groove, a third spring 220 is provided between the block 210 and the groove, the end of the block 210 extending out of the groove is set as a slope on the side away from the filter screen, the outer periphery of the side of the valve plate 3 close to the filter screen is set as a slope, the outer wall of the valve plate 3 is provided with an annular groove, and a positioning ring 310 is movably provided in the annular groove, and the cross-section of the positioning ring 310 is triangular.

[0110] Furthermore, a handle or a driving portion 9 is provided on a side of the valve plate 3 away from the filter screen.

[0111] Furthermore, a sealing ring 20 is provided on the side of the valve plate 3 away from the filter screen, and the outer wall of the sealing ring 20 contacts the outer wall of the smoke exhaust pipe 1;

[0112] The side wall of the smoke exhaust pipe 1 is provided with a plurality of exhaust ports 120, which are arranged on the side of the limiting ring 2 away from the filter screen; one of the exhaust ports 120 is communicated with the second through hole 110; when the valve plate 3 is sealed with the limiting ring 2, the sealing ring 20 seals the exhaust port 120;

[0113] The air outlet pipe 21 is sleeved on the outside of the smoke exhaust pipe 1 and communicated with the exhaust port 120 .

[0114] In order to improve the convenience and stability of the sealing connection between the valve plate 3 and the limiting ring 2, when the valve plate 3 needs to be closed, it is pushed toward one side of the limiting ring 2, and the valve plate 3 squeezes the block 210 to compress the third spring 220. When the valve plate 3 continues to move, the block 210 moves to correspond to the annular groove, and the block 210 extends, so that the valve plate 3 is clamped with the limiting ring 2. The outer peripheral surface of the valve plate 3 is in sealing contact with the inner peripheral surface of the limiting ring 2, so that the flue gas cannot push the valve plate 3, ensuring the stability and sealing of the connection between the two. At the same time, the sealing ring 20 also seals the exhaust port 120, playing a double sealing role. In particular, when the drive part 9 is selected to perform the action of the valve plate 3, the sealing ring 20 can isolate the drive part 9 from the heat source to ensure that the drive part 9 is not damaged.

[0115] like Figure 9 As shown, when the valve plate 3 and the limiting ring 2 need to be switched to the open state, the valve plate 3 is first pushed to the left, and the block 210 is retracted and the third spring 220 is compressed under the action of the positioning ring 310. After the valve plate 3 continues to move, the positioning ring 310 will be located on the left side of the block 210. Then, the valve plate 3 is pulled to the right to remove the valve plate 3 from the limiting ring 2, so that the two are separated from the sealed connection and switched to the open state.

[0116] like Figure 11 As shown, in one embodiment, the driving unit 9 includes:

[0117] The sleeve 910 is connected to the smoke exhaust pipe 1 through the connecting rod 22;

[0118] The connecting column 920 is limitedly slidably disposed in the sleeve 910, one end of which is connected to the valve plate 3; and the other end is provided with a threaded hole;

[0119] The screw rod 930 is disposed in the threaded hole of the connecting column 920 , and one end thereof is connected to the output end of the driving motor 940 .

[0120] When the driving part 9 is working, the driving motor 940 is started to drive the screw 930 to rotate, and then the connecting column 920 threadedly connected to the screw 930 will move along the axial direction of the screw 930 under the limiting action of the sleeve 910, thereby realizing linear driving of the valve plate 3.

[0121] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0122] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0123] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. An air conditioning smoke exhaust fire damper with smoke filtering function, characterized in that: include: A limiting ring (2) is arranged in the smoke exhaust pipe (1); A valve plate (3) is movably arranged in the limiting ring (2), and the valve plate (3) is selectively sealed and connected to the limiting ring (2); The installation cylinder (4) is disassembled and connected in the smoke exhaust pipe (1) and is located on one side of the limiting ring (2); At least two filter screens are spaced apart and arranged in the mounting cylinder (4); A cleaning device is arranged between the two filter screens, and the cleaning device utilizes the airflow in the smoke exhaust pipe (1) to generate vibration to clean the filter screens; The filter screen is provided with three, including: A first filter screen (10) is provided with a mounting ring (13) on its outer periphery, and the mounting ring (13) is detachably connected to the interior of the mounting cylinder (4); The second filter screen (11) and the third filter screen (12) are both arranged in a positioning sleeve (17), and the positioning sleeve (17) is threadedly connected to the mounting cylinder (4); The cleaning device is arranged between the first filter screen (10) and the second filter screen (11); The cleaning device comprises: An air intake pipe (5) is arranged in a mounting tube (4); a first through hole (410) communicating with the air intake pipe (5) is provided on a side wall of the mounting tube (4); a second through hole (110) communicating with the first through hole (410) is provided on a side wall of the smoke exhaust pipe (1); the second through hole (110) is communicated with an exhaust port (120) on the smoke exhaust pipe (1) via a connecting tube (6); A vibration generating assembly (7) is arranged in the mounting cylinder (4) and communicated with the air intake pipe (5); two sides of the vibration generating assembly (7) are in contact with the first filter (10) and the second filter (11), respectively; a first spring (19) is provided between the second filter (11) and the third filter (12).

2. The air conditioner smoke exhaust fire damper with smoke filtering function according to claim 1 is characterized in that: The vibration generating component (7) comprises: A fixed block (710) is provided with an ellipsoidal cavity (711) therein, and a plurality of exhaust holes are provided on a side of the ellipsoidal cavity (711) away from the air inlet pipe (5); a plurality of elastic rods (720) symmetrically arranged on the side wall of the ellipsoidal cavity (711), one end of the elastic rod (720) being located in the ellipsoidal cavity (711), and the end of the elastic rod (720) extending out of the fixed block (710) being in contact with the first filter screen (10) or the second filter screen (11); There are two trigger balls (730) which are movably arranged in the ellipsoidal cavity (711).

3. The air conditioner smoke exhaust fire damper with smoke filtering function according to claim 2 is characterized in that: The elastic rod (720) comprises: A trigger block (721), wherein a receiving groove is provided on the side wall of the ellipsoidal cavity (711), and the trigger block (721) is slidably disposed in the receiving groove; A trigger rod (722) is connected to the trigger block (721), a third through hole penetrating the fixed block (710) is provided in the receiving groove, and the trigger rod (722) is slidably disposed in the third through hole; a second spring (723) connected between the step surface formed by the receiving groove and the third through hole and the trigger block (721); The surface of the trigger block (721) located on the same side and away from the trigger rod (722) forms an ellipsoidal surface.

4. The air conditioner smoke exhaust fire damper with smoke filtering function according to claim 2 is characterized in that: A flow guide (8) is provided in the end portion of the air inlet pipe (5) close to the fixed block (710); the flow guide (8) comprises: The flow-guiding sphere (810) is provided with a vent hole (811) therein, the axis of the vent hole (811) being parallel to the axis of the air inlet pipe (5); the top surface of the flow-guiding sphere (810) is provided with a fourth through hole (812); The air outlet holes (820) are evenly distributed on one side of the flow-guiding sphere (810) close to the ellipsoidal cavity (711), and the air outlet holes (820) are respectively connected to the air vent (811) and the ellipsoidal cavity (711); First air inlet holes (830) are evenly distributed on a side of the flow-guiding sphere (810) away from the ellipsoidal cavity (711), the first air inlet holes (830) are selectively connected to the vent holes (811), and the first air inlet holes (830) are connected to the air inlet pipe (5); An air intake block (840) is provided in one end of the air vent (811) away from the ellipsoidal cavity (711), and a second air intake hole (841) for connecting the air vent (811) and the air intake pipe (5) is provided in the air intake block (840); The movable block (850) is slidably arranged in the vent hole (811). A tapered hole (851) is provided on one side of the movable block (850) close to the air intake block (840). The diameter of the tapered hole (851) at one end close to the air intake block (840) is larger than the diameter at the other end.

5. The air conditioner smoke exhaust fire damper with smoke filtering function according to claim 1 is characterized in that: Four grooves are evenly arranged on the inner side wall of the limiting ring (2), a clamping block (210) is slidably provided in the groove, a third spring (220) is provided between the clamping block (210) and the groove, the end of the clamping block (210) extending out of the groove is set as an inclined surface on the side away from the filter screen, the outer periphery of the side of the valve plate (3) close to the filter screen is set as an inclined surface, the outer side wall of the valve plate (3) is provided with an annular groove, a positioning ring (310) is movably sleeved in the annular groove, and the cross section of the positioning ring (310) is triangular.

6. The air conditioner smoke exhaust fire damper with smoke filtering function according to claim 5, characterized in that: A handle or a driving part (9) is provided on the side of the valve plate (3) away from the filter screen.

7. The air conditioner smoke exhaust fire damper with smoke filtering function according to claim 6, characterized in that: A sealing ring (20) is provided on the side of the valve plate (3) away from the filter screen, and the outer wall of the sealing ring (20) contacts the outer wall of the smoke exhaust pipe (1); A plurality of exhaust ports (120) are provided on the side wall of the smoke exhaust pipe (1), and the exhaust ports (120) are arranged on a side of the limiting ring (2) away from the filter screen; one of the exhaust ports (120) is communicated with the second through hole (110); when the valve plate (3) is sealedly connected to the limiting ring (2), the sealing ring (20) seals the exhaust port (120); The air outlet pipe (21) is sleeved on the outside of the smoke exhaust pipe (1) and communicated with the exhaust port (120).

8. The air conditioner smoke exhaust fire damper with smoke filtering function according to claim 6, characterized in that: The driving unit (9) comprises: The sleeve (910) is connected to the smoke exhaust pipe (1) via a connecting rod (22); A connecting column (920) is limitedly slidably disposed in the sleeve (910), one end of which is connected to the valve plate (3); and the other end is provided with a threaded hole; The screw rod (930) is disposed in the threaded hole of the connecting column (920), and one end of the screw rod is connected to the output end of the driving motor (940).

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