Waste gas treatment induced draft fan

Abstract

The utility model relates to a waste gas treatment induced draft fan, which belongs to the technical field of waste gas treatment and comprises an induced draft fan body, an air inlet pipe and an air outlet pipe are respectively arranged at two ends of the induced draft fan body, a mounting pipe is arranged between the air inlet pipe and the induced draft fan body, and a filter screen is fixedly mounted in the mounting pipe. A cleaning mechanism is arranged on the outer side of the filter screen, and a sealing assembly is arranged on the lower side of the filter screen; the cleaning mechanism comprises a fixing box, a driving motor is fixedly mounted on the upper side of the fixing box, a lead screw is fixedly mounted on an output shaft of the driving motor, a threaded sleeve is in threaded connection with the outer side of the lead screw, a mounting block is fixedly connected with the outer side of the threaded sleeve, and a vertical rod is fixedly connected with the lower side of the mounting block. The lower end of the vertical rod is fixedly connected with a scraping strip; the sealing assembly comprises a sealing plate inserted into the bottom of the mounting pipe. The waste gas treatment induced draft fan is convenient to clean, reduces the workload of workers, and is high in practicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to waste gas treatment technical field, concretely is a waste gas treatment induced draft fan. BACKGROUND

[0002] Waste gas is the toxic and harmful gas that human in production and life process emits, especially chemical plant, steel plant, pharmaceutical factory and coking plant and oil refinery etc., the waste gas smell is big, and seriously pollutes the environment and influences human health. With the acceleration of global industrialization process, waste gas emission problem highlights day by day, and the waste gas emission of factory, power plant, chemical plant etc. industrial enterprise has become one of the main factors of environmental pollution, and waste gas contains a variety of harmful substances, such as sulfur dioxide, nitrogen oxides, particulate matter etc., if these substances are discharged more than certain limit, will cause great harm to air quality, and then influence human health. Therefore, the research and application of waste gas treatment technology are particularly important.

[0003] In the process of waste gas treatment, induced draft fan is needed to transport waste gas, such as the prior art disclosed in the publication No. CN217367576U, a cyanuric acid production waste gas treatment induced draft fan, comprising: filter box, fixed plate and mounting plate, filter box bottom installs induced draft fan body, filter box top installs air duct, air duct one side bottom installs connecting plate, filter box other side installs smoke pipe. When the device is used, the operator starts the induced draft fan body to transmit the external structure waste gas through the air duct and the connecting plate, when the waste gas is transmitted to the filter box inside through the air duct, the particles in the waste gas can be filtered through the filter screen, and the particles are adsorbed and retained on the surface of the filter screen, when the filtering is completed, the filter screen can be taken out for cleaning or replacement by pulling the handle and the fixed plate to drive the sliding block installed on both sides of the filter plate to slide in the sliding rail, at this time, the filter screen can be taken out for cleaning or replacement, which improves the convenience of the device.

[0004] However, the above-mentioned waste gas treatment induced draft fan needs to be frequently disassembled and cleaned, which increases the workload of the staff, and is not convenient to use, so a waste gas treatment induced draft fan is proposed to solve the above-mentioned problems. UTILITY MODEL CONTENT

[0005] In view of the deficiencies of the prior art, the utility model provides a waste gas treatment induced draft fan, which has the advantages of convenient cleaning, solves the problem that the existing waste gas treatment induced draft fan needs to be frequently disassembled and cleaned during use, which increases the workload of the staff and is not convenient to use.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: a waste gas treatment induced draft fan, including induced draft fan body, the both ends of induced draft fan body are provided with air inlet pipe and air outlet pipe, air inlet pipe and induced draft fan body are provided with installation pipe between, the inside fixed mounting of installation pipe has filter screen, the outside of filter screen is provided with cleaning mechanism, the downside of filter screen is provided with sealing assembly,

[0007] The cleaning mechanism includes a fixed box, a drive motor is fixedly installed on the upper side of the fixed box, a lead screw is fixedly installed on the output shaft of the drive motor, a threaded sleeve is threadedly connected to the outer side of the lead screw, an installation block is fixedly connected to the outer side of the threaded sleeve, a vertical rod is fixedly connected to the lower side of the installation block, and a scraping strip is fixedly connected to the lower end of the vertical rod.

[0008] The sealing assembly includes a sealing plate inserted into the bottom of the installation pipe, a cover plate is fixedly connected to the bottom of the sealing plate, and a limiting assembly is arranged on the left and right sides of the sealing plate.

[0009] Further, the installation pipe is fixedly installed on the air inlet end of the induced draft fan body, and the air inlet pipe is fixedly installed on the outer side of the installation pipe.

[0010] Further, the fixed box is fixedly installed on the upper side of the installation pipe, and the air outlet pipe is fixedly installed on the air outlet end of the induced draft fan body.

[0011] Further, the lead screw is rotatably installed in the interior of the fixed box, the outer side of the threaded sleeve is fixedly connected with a sliding block, the interior of the fixed box is fixedly installed with a guide rail, and the sliding block is slidingly connected to the inner side of the guide rail.

[0012] Further, a strip-shaped opening is formed in the side of the fixed box close to the installation block, the installation block penetrates the inner side of the strip-shaped opening, the lower end of the vertical rod extends into the interior of the installation pipe, and the scraping strip abuts against the outer wall of the filter screen.

[0013] Further, the sealing plate is located below the scraping strip, and the cover plate is located on the outer wall of the installation pipe.

[0014] Further, the limiting assembly includes a limiting rod, an adjusting rod and a spring, the adjusting rod is inserted into the outer wall of the installation pipe, one end of the limiting rod is fixedly connected with the outer wall of the adjusting rod, and the other end of the limiting rod is inserted into the inner side of the sealing plate.

[0015] Further, the side of the adjusting rod away from the limiting rod is fixedly connected with one end of the spring, and the other end of the spring is fixedly connected with the interior of the installation pipe.

[0016] Compared with the prior art, the utility model provides a waste gas treatment induced draft fan, which has the following beneficial effects:

[0017] The waste gas treatment induced draft fan, through starting the driving motor to drive the screw rod to rotate and drive the threaded sleeve to move up and down, simultaneously drives the mounting block and the vertical rod to move, and the vertical rod drives the scraping strip to move up and down along the outer wall of the filter screen, thereby scraping off the impurities on the filter screen, realizing automatic cleaning of the filter screen, and the scraped impurities fall into the installation pipe, when repeatedly cleaning for a certain period, a certain amount of impurities is accumulated in the installation pipe, the limiting rod is driven to move by the adjusting rod to be separated from the sealing plate, the sealing plate is taken off to be disassembled from the installation pipe, the impurities in the installation pipe are conveniently discharged, cleaning is convenient, the workload of the workers is reduced, the practicability is high, and the problem that the existing waste gas treatment induced draft fan needs to be frequently disassembled and cleaned during use, thereby increasing the workload of the workers and being inconvenient to use is solved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a sectional view of the utility model structure;

[0019] Figure 2 It is a structural schematic view of the fixed box of the utility model;

[0020] Figure 3 It is the utility model Figure 1 It is an enlarged structural schematic view of A shown in the utility model;

[0021] Figure 4 It is a structural schematic view of the scraping strip and the filter screen of the utility model.

[0022] In the drawing: 1, induced draft fan body; 2, air inlet pipe; 3, air outlet pipe; 4, installation pipe; 5, filter screen; 6, fixed box; 7, driving motor; 8, screw rod; 9, threaded sleeve; 10, sliding block; 11, guide rail; 12, mounting block; 13, vertical rod; 14, scraping strip; 15, sealing plate; 16, cover plate; 17, limiting rod; 18, adjusting rod; 19, spring. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Please refer to Figures 1 to 4The exhaust gas treatment induced draft fan in this embodiment includes an induced draft fan body 1. An air inlet pipe 2 and an air outlet pipe 3 are respectively provided at both ends of the induced draft fan body 1. An installation pipe 4 is provided between the air inlet pipe 2 and the induced draft fan body 1. The installation pipe 4 is fixedly installed on the air inlet end of the induced draft fan body 1. The air inlet pipe 2 is fixedly installed on the outside of the installation pipe 4. The air outlet pipe 3 is fixedly installed on the air outlet end of the induced draft fan body 1. A filter screen 5 is fixedly installed inside the installation pipe 4.

[0025] In this embodiment, a cleaning mechanism is provided on the outer side of the filter screen 5. The cleaning mechanism includes a fixed box 6, which is fixedly installed on the upper side of the mounting tube 4. A drive motor 7 is fixedly installed on the upper side of the fixed box 6. A lead screw 8 is fixedly installed on the output shaft of the drive motor 7. The lead screw 8 is rotatably installed inside the fixed box 6. A threaded sleeve 9 is threadedly connected to the outer side of the lead screw 8. An mounting block 12 is fixedly connected to the outer side of the threaded sleeve 9. A vertical rod 13 is fixedly connected to the lower side of the mounting block 12. A scraper 14 is fixedly connected to the lower end of the vertical rod 13.

[0026] Among them, the outer side of the threaded sleeve 9 is fixedly connected to the slider 10, the inside of the fixed box 6 is fixedly installed with the guide rail 11, the slider 10 is slidably connected to the inner side of the guide rail 11, the fixed box 6 has a strip-shaped opening on the side near the mounting block 12, the mounting block 12 passes through the inner side of the strip-shaped opening, the lower end of the vertical rod 13 extends into the inside of the mounting tube 4, and the scraper 14 is in contact with the outer wall of the filter screen 5.

[0027] In this embodiment, a sealing assembly is provided on the lower side of the filter screen 5. The sealing assembly includes a sealing plate 15 inserted into the bottom of the mounting tube 4, and the sealing plate 15 is located below the scraper 14. A cover plate 16 is fixedly connected to the bottom of the sealing plate 15, and the cover plate 16 is located on the outer wall of the mounting tube 4. Limiting components are provided on both the left and right sides of the sealing plate 15.

[0028] It should be noted that the limiting assembly includes a limiting rod 17, an adjusting rod 18, and a spring 19. The adjusting rod 18 is inserted into the outer wall of the mounting tube 4. One end of the limiting rod 17 is fixedly connected to the outer wall of the adjusting rod 18, and the other end of the limiting rod 17 is inserted into the inner side of the sealing plate 15. The side of the adjusting rod 18 away from the limiting rod 17 is fixedly connected to one end of the spring 19, and the other end of the spring 19 is fixedly connected to the inside of the mounting tube 4.

[0029] The working principle of the above embodiments is as follows:

[0030] In use, the drive motor 7 drives the lead screw 8 to rotate, which in turn drives the threaded sleeve 9 to move up and down. At the same time, it drives the mounting block 12 and the vertical rod 13 to move. The vertical rod 13 then drives the scraper 14 to move up and down along the outer wall of the filter screen 5, thereby scraping off the impurities on the filter screen 5 and realizing automatic cleaning of the filter screen 5. The scraped impurities fall into the installation tube 4. After repeated cleaning for a certain period of time, a certain amount of impurities accumulate inside the installation tube 4. By pushing the adjusting rod 18, the limiting rod 17 is moved to separate it from the sealing plate 15. The cover plate 16 is then removed to remove the sealing plate 15 from the installation tube 4, making it easier to discharge the impurities inside the installation tube 4.

[0031] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical methods, and can be implemented as long as they can achieve their beneficial effects. It should be noted that the orientation or positional relationship indicated herein is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waste gas treatment induced draft fan, comprising an induced draft fan body (1), wherein an inlet pipe (2) and an outlet pipe (3) are respectively provided at both ends of the induced draft fan body (1), characterized in that: An installation pipe (4) is provided between the air inlet pipe (2) and the blower body (1). A filter screen (5) is fixedly installed inside the installation pipe (4). A cleaning mechanism is provided on the outside of the filter screen (5). A sealing component is provided on the lower side of the filter screen (5). The cleaning mechanism includes a fixed box (6), a drive motor (7) is fixedly installed on the upper side of the fixed box (6), a lead screw (8) is fixedly installed on the output shaft of the drive motor (7), a threaded sleeve (9) is threadedly connected to the outer side of the lead screw (8), an installation block (12) is fixedly connected to the outer side of the threaded sleeve (9), a vertical rod (13) is fixedly connected to the lower side of the installation block (12), and a scraper (14) is fixedly connected to the lower end of the vertical rod (13). The sealing assembly includes a sealing plate (15) inserted into the bottom of the mounting tube (4), and a cover plate (16) is fixedly connected to the bottom of the sealing plate (15). Limiting components are provided on both the left and right sides of the sealing plate (15).

2. The exhaust gas treatment induced draft fan according to claim 1, characterized in that: The mounting pipe (4) is fixedly installed on the air inlet end of the induced draft fan body (1), and the air inlet pipe (2) is fixedly installed on the outside of the mounting pipe (4).

3. The exhaust gas treatment induced draft fan according to claim 1, characterized in that: The fixing box (6) is fixedly installed on the upper side of the mounting pipe (4), and the air outlet pipe (3) is fixedly installed on the air outlet end of the blower body (1).

4. The exhaust gas treatment induced draft fan according to claim 1, characterized in that: The lead screw (8) is rotatably installed inside the fixed box (6). A slider (10) is fixedly connected to the outside of the threaded sleeve (9). A guide rail (11) is fixedly installed inside the fixed box (6). The slider (10) is slidably connected to the inside of the guide rail (11).

5. The exhaust gas treatment induced draft fan according to claim 1, characterized in that: The fixing box (6) has a slot on the side near the mounting block (12), the mounting block (12) passes through the inside of the slot, the lower end of the vertical rod (13) extends into the interior of the mounting tube (4), and the scraper (14) is in contact with the outer wall of the filter screen (5).

6. The exhaust gas treatment induced draft fan according to claim 1, characterized in that: The sealing plate (15) is located below the scraper (14), and the cover plate (16) is located on the outer wall of the mounting tube (4).

7. The exhaust gas treatment induced draft fan according to claim 1, characterized in that: The limiting assembly includes a limiting rod (17), an adjusting rod (18), and a spring (19). The adjusting rod (18) is inserted into the outer wall of the mounting tube (4). One end of the limiting rod (17) is fixedly connected to the outer wall of the adjusting rod (18), and the other end of the limiting rod (17) is inserted into the inner side of the sealing plate (15).

8. The exhaust gas treatment induced draft fan according to claim 7, characterized in that: The side of the adjusting rod (18) away from the limiting rod (17) is fixedly connected to one end of the spring (19), and the other end of the spring (19) is fixedly connected to the inside of the mounting tube (4).

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