Duct pressurization self-exhaust device

Abstract

The utility model discloses a duct pressurization self-exhaust device which comprises an air supply device, a sealing device is arranged in the middle of the air supply device, and a filtering device is arranged in front of the sealing device. The sealing device comprises a first support, and a first lead screw is rotationally arranged at the bottom of the first support. According to the duct pressurization self-exhaust device, due to the design that the driving belt wheel is arranged at one end of the first lead screw, a filter screen automatically enters a pipeline in the opening process of a sealing plug, the filter screen automatically moves out after the pipeline is closed, a worker can quickly clean the filter screen after exhaust every time, the linkage performance and convenience of the device are improved, and the work efficiency is improved. The filter screen cleaning device is particularly suitable for use occasions with high dust content and need of frequent cleaning of the filter screen and is higher in practicability; and through the design that the first lead screw drives the sealing plug to move up and down, force is conveniently and continuously applied to the bottom, the sealing plug is tightly inserted into the air inlet, the sealing effect of the duct when air is not exhausted is improved, and the situation that machining indexes such as air pressure or temperature are affected by air leakage at the joint is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of ducted exhaust device design, in particular to a ducted pressurized self-exhaust device. Background Art

[0002] Ducts, commonly used in engineering or construction, refer to a channel or duct system specifically designed to discharge exhaust gases or fumes. Ducts are often used in industrial facilities, power plants, boiler rooms, or other locations that generate large amounts of exhaust gases to ensure they are efficiently discharged into the atmosphere while minimizing harm to the surrounding environment and personnel. The design of exhaust ducts requires consideration of various factors, including the temperature, composition, volume of exhaust gases, and their environmental impact. Ducts may be constructed of metal, concrete, or other heat- and corrosion-resistant materials to ensure structural integrity and functionality over extended periods of operation.

[0003] When a ducted exhaust device discharges airflow with a lot of dust, it is often necessary to install a filter in the duct, and the filter needs to be cleaned after each use. The existing exhaust device lacks a design that can improve the convenience of workers in cleaning the filter, and its ability to adapt to occasions with high dust content and frequent filter cleaning is poor. At the same time, the sealing effect of the joints of the existing ducted exhaust device is not high, and it is easy to leak and affect processing indicators such as air pressure or temperature. Summary of the Invention

[0004] The purpose of the present invention is to provide a ducted pressurized self-exhaust device to solve the problems existing in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A ducted pressurized self-exhaust device includes an air supply device, a closing device is provided in the middle of the air supply device, and a filtering device is provided in front of the closing device; the closing device includes a first bracket, a first screw is rotatably provided at the bottom of the first bracket, the first screw thread is a forward and reverse thread, a motor is installed at one end of the first screw, two moving blocks are symmetrically provided on the first screw, a rotating arm is rotatably provided at the bottom of the moving block, a lifting block is rotatably provided at the bottom of the rotating arm, and a closing plug is provided at the bottom of the lifting block; the filtering device includes a second bracket, a second screw is rotatably provided at the bottom of the second bracket, a filter frame is provided on the second screw, a filter screen is provided in the middle of the filter frame, a driven pulley is provided at one end of the second screw, a driving pulley is provided behind the driven pulley, and a transmission belt is provided between the driven pulley and the driving pulley.

[0007] Furthermore: the air supply device includes a pipe, an air inlet is provided at the bottom of the pipe, and a fan is installed on one side of the pipe.

[0008] Furthermore: the pipeline is J-shaped, and the fan is connected to the pipeline with bolts.

[0009] Furthermore: the first screw is connected to the first bracket bearing, and the first bracket is welded to the pipe.

[0010] Furthermore: the filter frame is connected to the pipeline in a plug-in manner.

[0011] Furthermore: the driving pulley is key-connected to the first lead screw.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] By setting an active pulley at one end of the first screw, the filter automatically enters the pipe when the closing plug is opened, and automatically moves out after the pipe is closed. The staff can quickly clean the filter after each exhaust, improving the linkage and convenience of the device. It is especially suitable for use in occasions with high dust content and frequent filter cleaning, and is more practical.

[0014] The design of driving the closing plug up and down by the first screw facilitates continuous force application to the bottom, so that the closing plug is tightly inserted into the air inlet, improving the sealing effect of the duct when no air is exhausted, and preventing air leakage at the connection from affecting processing indicators such as air pressure or temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0016] Figure 1 This is a structural diagram of a ducted pressurized self-exhaust device described in the utility model;

[0017] Figure 2 This is a partial cross-sectional view of the air supply device of the ducted pressurized self-exhaust device described in the present invention;

[0018] Figure 3 This is a schematic structural diagram of a closing device for a ducted pressurized self-exhaust device according to the present invention;

[0019] Figure 4 It is a structural schematic diagram of a filtering device of a ducted pressurized self-exhaust device described in the present invention.

[0020] In the accompanying drawings: 1. air supply device; 101. duct; 102. air inlet; 103. fan; 2. closing device; 201. first bracket; 202. first screw; 203. motor; 204. moving block; 205. rotating arm; 206. lifting block; 207. closing plug; 3. filtering device; 301. second bracket; 302. second screw; 303. filter frame; 304. filter screen; 305. driven pulley; 306. driving pulley; 307. transmission belt. DETAILED DESCRIPTION

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like 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, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-Figure 4 A ducted pressurized self-exhaust device includes an air supply device 1, a closing device 2 is provided in the middle of the air supply device 1, and a filtering device 3 is provided in front of the closing device 2.

[0025] In this embodiment, the air supply device 1 includes a pipe 101, an air inlet 102 is provided at the bottom of the pipe 101, and a fan 103 is installed on one side of the pipe 101. The pipe 101 is J-shaped, and the fan 103 is bolted to the pipe 101. When the exhaust gas passes through the air inlet 102 and enters the pipe 101, the pipe 101 supports the fan 103 to rotate, so that the pressure is increased and the air flow moves quickly along the pipe 101. Finally, the air flow passes through the fan 103 to complete the exhaust.

[0026] In this embodiment, the closing device 2 includes a first bracket 201, a first screw 202 is rotatably provided at the bottom of the first bracket 201, the first screw 202 thread is a positive and negative thread, a motor 203 is installed at one end of the first screw 202, two moving blocks 204 are symmetrically provided on the first screw 202, a rotating arm 205 is rotatably provided at the bottom of the moving block 204, a lifting block 206 is rotatably provided at the bottom of the rotating arm 205, a closing plug 207 is provided at the bottom of the lifting block 206, the first screw 202 is connected to the first bracket 201 bearing, the first bracket 2 01 is welded to the pipe 101. When exhausting, the first bracket 201 supports the motor 203 to drive the first screw 202 to rotate, driving the two moving blocks 204 to move evenly outward, driving the two rotating arms 205 to rotate, and pulling the lifting block 206 to drive the closing plug 207 to move out of the air inlet 102. After exhausting, the motor 203 drives the first screw 202 to reset. During this process, the closing plug 207 blocks the air inlet 102 again to close the duct, and the filter 304 is automatically removed from the pipe 101, making it easier for staff to clean it.

[0027] In this embodiment, the filter device 3 includes a second bracket 301, a second screw 302 is rotatably provided at the bottom of the second bracket 301, a filter frame 303 is provided on the second screw 302, and a filter screen 304 is provided in the middle of the filter frame 303, a driven pulley 305 is provided at one end of the second screw 302, a driving pulley 306 is provided behind the driven pulley 305, a transmission belt 307 is provided between the driven pulley 305 and the driving pulley 306, the filter frame 303 is plugged and unplugged with the pipeline 101, the driving pulley 306 is connected to the first screw 202 with a flat key, and the rotation of the first screw 202 simultaneously drives the driving pulley 306 to rotate, and the driven pulley 305 is driven to rotate with the transmission belt 307, driving the second screw 302 to rotate under the support of the second bracket 301, driving the filter frame 303 to move left and insert into the pipeline 101, at this time, the airflow in the pipeline 101 passes through the filter screen 304, thereby filtering the dust in the airflow.

[0028] Working principle: When exhausting, the first bracket 201 supports the motor 203 to drive the first screw 202 to rotate, driving the two moving blocks 204 to move evenly outward, driving the two rotating arms 205 to rotate, and pulling the lifting block 206 to drive the closing plug 207 to move out of the air inlet 102. At this time, the exhaust gas passes through the air inlet 102 and enters the pipe 101. The pipe 101 supports the fan 103 to rotate, which is convenient for pressurization to drive the air flow to move quickly along the pipe 101. Finally, the air flow passes through the fan 103 to complete the exhaust. During the rotation of the first screw 202, it also drives The driving pulley 306 rotates, and the driven pulley 305 is driven to rotate along with it through the transmission belt 307, driving the second screw 302 to rotate under the support of the second bracket 301, and driving the filter frame 303 to move to the left and insert into the pipe 101. At this time, the air flow in the pipe 101 passes through the filter 304 to filter the dust in the air flow. After exhaust, the motor 203 drives the first screw 202 to reset. In this process, the closing plug 207 re-blocks the air inlet 102 to achieve duct closure, and the filter 304 is automatically removed from the pipe 101, making it easier for the staff to clean it.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ducted pressurized self-exhaust device, comprising an air supply device (1), characterized in that: A closing device (2) is provided in the middle of the air supply device (1), and a filtering device (3) is provided in front of the closing device (2); The closing device (2) comprises a first bracket (201), a first screw (202) being rotatably provided at the bottom of the first bracket (201), the first screw (202) having a forward and reverse thread, a motor (203) being mounted at one end of the first screw (202), two moving blocks (204) being symmetrically provided on the first screw (202), a rotating arm (205) being rotatably provided at the bottom of the moving block (204), a lifting block (206) being rotatably provided at the bottom of the rotating arm (205), and a closing plug (207) being provided at the bottom of the lifting block (206); The filtering device (3) comprises a second bracket (301), a second screw (302) is rotatably provided at the bottom of the second bracket (301), a filter frame (303) is provided on the second screw (302), a filter screen (304) is provided in the middle of the filter frame (303), a driven pulley (305) is provided at one end of the second screw (302), a driving pulley (306) is provided behind the driven pulley (305), and a transmission belt (307) is provided between the driven pulley (305) and the driving pulley (306).

2. The ducted pressurized self-exhaust device according to claim 1, characterized in that: The air supply device (1) comprises a pipe (101), an air inlet (102) is provided at the bottom of the pipe (101), and a fan (103) is installed on one side of the pipe (101).

3. The ducted pressurized self-exhaust device according to claim 2, characterized in that: The pipe (101) is J-shaped, and the fan (103) is bolted to the pipe (101).

4. The ducted pressurized self-exhaust device according to claim 2, characterized in that: The first lead screw (202) is connected to the first bracket (201) by a bearing, and the first bracket (201) is welded to the pipe (101).

5. The ducted pressurized self-exhaust device according to claim 2, characterized in that: The filter frame (303) is connected to the pipeline (101) by plugging and unplugging.

6. The ducted pressurized self-exhaust device according to claim 1, characterized in that: The driving pulley (306) is connected to the first lead screw (202) via a flat key.

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