A heat treatment furnace flue gas circulation induced draft pressurization device

Abstract

This utility model relates to the field of flue gas treatment technology and discloses a flue gas circulation and pressurization device for a heat treatment furnace, including a base and a support frame. The device is characterized in that: an induced draft fan body is fixedly installed on the top of the support frame; an air inlet is fixedly installed on the front of the induced draft fan body; a filter mechanism is provided on the front of the air inlet; and a limiting mechanism is provided on the inner wall of the base. The filter cartridge facilitates the filtration of flue gas during the induced draft process, thereby preventing a large amount of impurities from entering the interior of the induced draft fan body. By disassembling the air inlet from the connecting pipe, it is not necessary to separate the connecting pipe from the flue gas outlet pipe of the heat treatment furnace. With the cooperation of the moving plate and the moving wheels, it is easy to move the induced draft fan body away from the connecting pipe, facilitating short-distance movement of the induced draft fan body. By rotating the handle, with the cooperation of the connecting sleeve and the positioning ring, it is easy to quickly assemble and disassemble the filter cartridge, and also facilitates the disassembly and maintenance of the induced draft fan body.

Description

Technical Field

[0001] This utility model relates to the field of flue gas treatment technology, specifically to a flue gas circulation and pressurization device for heat treatment furnaces. Background Technology

[0002] A heat treatment furnace is an electric or fuel-fired furnace used for heating furnace charge for heat treatment. When circulating flue gas in a heat treatment furnace, an induced draft fan is required. The induced draft fan is a device that generates negative pressure by rotating an impeller, thereby drawing air from the system (equipment). It is generally installed at the tail end of the heat treatment furnace to extract hot flue gas from the furnace chamber.

[0003] In existing technologies, the exhaust pipe of the heat treatment furnace is usually connected to the inlet pipe of the induced draft fan, and then the circulation pipe is connected to the outlet pipe of the induced draft fan to circulate the flue gas. However, since the flue gas contains a lot of dust, and the dust has a certain degree of adhesion, long-term use will cause the fan impeller to gradually accumulate ash, resulting in poor emission efficiency. Moreover, when the accumulated ash reaches a certain weight, due to the centrifugal force of the rotating boiler induced draft fan impeller, some of the accumulated ash is thrown out of the impeller, causing uneven ash accumulation on the blades and an unbalanced mass distribution of the impeller. This leads to increased fan vibration, requiring workers to disassemble and clean the induced draft fan, which is inconvenient. Therefore, it is necessary to improve the flue gas circulation and induced draft pressurization device for heat treatment furnaces to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a heat treatment furnace flue gas circulation and pressurization device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a heat treatment furnace flue gas circulation induced draft pressurization device, comprising a base and a support frame, characterized in that: an induced draft fan body is fixedly installed on the top of the support frame, an air inlet is fixedly installed on the front of the induced draft fan body, a filter mechanism is provided on the front of the air inlet, and a limit mechanism is provided on the inner wall of the base.

[0006] Preferably, the filtration mechanism includes a connecting pipe, which is fixedly installed on the front of the air inlet. A filter cartridge is movably installed inside the connecting pipe. A connecting plate is fixedly installed on the back of the filter cartridge. A handle is fixedly installed on the back of the connecting plate. A connecting sleeve is fixedly installed on the front of the filter cartridge. A positioning ring is fixedly installed on the inner wall of the front of the connecting pipe. A movable plate is fixedly installed at the bottom of the support frame. The movable plate is slidably installed on the inner wall of the base. A movable wheel is fixedly installed at the bottom of the movable plate. The movable wheel contacts the inner wall of the bottom of the base, which facilitates the filtration of flue gas and the disassembly of the filter cartridge.

[0007] Preferably, the inner wall of the connecting sleeve is provided with an internal thread, and the outer side of the positioning ring is provided with an external thread. The connecting sleeve is threadedly installed on the outside of the positioning ring, which facilitates quick assembly and disassembly of the filter cartridge.

[0008] Preferably, the limiting mechanism includes a connecting frame, which is fixedly installed on the inner wall of the back of the base. A screw is threaded on the internal part of the connecting frame. A wheel is fixedly installed on the top of the screw. A lifting plate is rotatably installed on the bottom of the screw. A guide post is fixedly installed on the top of the lifting plate. An insert is fixedly installed on the bottom of the lifting plate, which facilitates limiting the movement of the plate after it has been moved.

[0009] Preferably, the connecting frame has a through hole at the position corresponding to the guide column, and the guide column is slidably installed in the through hole, which facilitates the guiding work of the lifting plate and the smooth lifting of the lifting plate.

[0010] Preferably, a through groove is provided inside the movable plate at the position corresponding to the insertion block, and the insertion block is slidably installed in the through groove to facilitate the limiting operation of the movable plate.

[0011] Compared with the prior art, this utility model provides a heat treatment furnace flue gas circulation induced draft pressurization device, which has the following beneficial effects:

[0012] 1. This heat treatment furnace flue gas circulation induced draft booster device, through its set filter mechanism, connects the connecting pipe to the air inlet and then to the flue gas outlet of the heat treatment furnace during operation. The filter cartridge facilitates the filtration of flue gas during the induced draft process, preventing a large amount of impurities from entering the interior of the induced draft fan body, thus ensuring the working efficiency of the fan body. When the filter cartridge needs to be disassembled and cleaned, the air inlet and connecting pipe are disconnected without separating the connecting pipe from the flue gas outlet of the heat treatment furnace. With the cooperation of the moving plate and moving wheels, the induced draft fan body can be easily moved away from the connecting pipe, facilitating short-distance movement of the fan body. By rotating the handle, with the cooperation of the connecting sleeve and positioning ring, the filter cartridge can be quickly disassembled and installed, and the induced draft fan body can be easily disassembled and maintained.

[0013] 2. This heat treatment furnace flue gas circulation induced draft booster device, through the setting of a limiting mechanism, facilitates the guidance of the lifting plate during use through the setting of guide columns. With the cooperation of screw and wheel, the lifting plate can be raised and lowered. As the moving plate moves away from the heat treatment furnace, the moving plate can be limited with the cooperation of the insert block, thereby ensuring the stability of the moving plate and facilitating the subsequent disassembly of the filter cartridge and maintenance of the induced draft fan body. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the front structure of this utility model;

[0016] Figure 2 This is a side view of the present invention.

[0017] Figure 3 This is a schematic diagram of the filter mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram showing the positional relationship of the positioning rings in this utility model;

[0019] Figure 5 This is a schematic diagram of the limiting mechanism of this utility model.

[0020] In the diagram: 1. Base; 2. Support frame; 3. Exhaust fan body; 4. Air inlet; 5. Filter mechanism; 501. Connecting pipe; 502. Filter cartridge; 503. Connecting plate; 504. Handle; 505. Connecting sleeve; 506. Positioning ring; 507. Moving plate; 508. Moving wheel; 6. Limiting mechanism; 601. Connecting frame; 602. Screw; 603. Rotary wheel; 604. Lifting plate; 605. Guide column; 606. Insert block. Detailed Implementation

[0021] 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.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] Example 1:

[0024] Please see Figure 1-4 This utility model provides a technical solution: a heat treatment furnace flue gas circulation induced draft pressurization device, including a base 1 and a support frame 2, characterized in that: an induced draft fan body 3 is fixedly installed on the top of the support frame 2, an air inlet 4 is fixedly installed on the front of the induced draft fan body 3, a filter mechanism 5 is provided on the front of the air inlet 4, and a limit mechanism 6 is provided on the inner wall of the base 1.

[0025] Furthermore, the filtration mechanism 5 includes a connecting pipe 501, which is fixedly installed on the front of the air inlet 4. The air inlet 4 and the connecting pipe 501 are limited by bolts. A filter cartridge 502 is movably installed inside the connecting pipe 501. A connecting plate 503 is fixedly installed on the back of the filter cartridge 502, and a handle 504 is fixedly installed on the back of the connecting plate 503. A connecting sleeve 505 is fixedly installed on the front of the filter cartridge 502. A positioning ring 506 is fixedly installed on the inner wall of the front of the connecting pipe 501. A movable plate 507 is fixedly installed at the bottom of the support frame 2. The movable plate 507 is slidably installed on the inner wall of the base 1. A movable wheel 508 is fixedly installed at the bottom of the movable plate 507, and the movable wheel 508 contacts the inner wall of the bottom of the base 1. By installing the connecting pipe 501 and the air inlet 4... The connecting pipe 501 is connected to the flue gas outlet pipe of the heat treatment furnace. The filter cartridge 502 facilitates the filtration of flue gas during the induced draft process, thereby preventing a large amount of impurities from entering the interior of the induced draft fan body 3 and ensuring the working efficiency of the induced draft fan body 3. When it is necessary to disassemble and clean the filter cartridge 502, the air inlet 4 is disconnected from the connecting pipe 501 without separating the connecting pipe 501 from the flue gas outlet pipe of the heat treatment furnace. With the cooperation of the moving plate 507 and the moving wheel 508, it is easy to move the induced draft fan body 3 away from the connecting pipe 501, which facilitates short-distance movement of the induced draft fan body 3. By rotating the handle 504, with the cooperation of the connecting sleeve 505 and the positioning ring 506, it is easy to quickly disassemble and assemble the filter cartridge 502, and also to facilitate the disassembly and maintenance of the induced draft fan body 3.

[0026] Furthermore, the inner wall of the connecting sleeve 505 is provided with internal threads, and the outer side of the positioning ring 506 is provided with external threads. The connecting sleeve 505 is threaded onto the outside of the positioning ring 506, which facilitates the quick assembly and disassembly of the filter cartridge 502.

[0027] Please see Figure 5Furthermore, in conjunction with Embodiment 1, the limiting mechanism 6 includes a connecting frame 601, which is fixedly installed on the inner wall of the back of the base 1. A screw 602 is threaded inside the connecting frame 601. A rotating wheel 603 is fixedly installed on the top of the screw 602, and a lifting plate 604 is rotatably installed on the bottom of the screw 602. A guide post 605 is fixedly installed on the top of the lifting plate 604, and an insert block 606 is fixedly installed on the bottom of the lifting plate 604. The guide post 605 facilitates the guiding of the lifting plate 604. With the cooperation of the screw 602 and the rotating wheel 603, the lifting plate 604 can be raised and lowered. As the moving plate 507 moves away from the heat treatment furnace, the insert block 606 helps to limit the movement of the moving plate 507, thereby ensuring the stability of the moving plate 507 and facilitating the subsequent disassembly of the filter cartridge 502 and maintenance of the induced draft fan body 3.

[0028] Furthermore, the connecting frame 601 has through holes at positions corresponding to the guide column 605, and the guide column 605 is slidably installed in the through holes, which facilitates the guiding work of the lifting plate 604 and the smooth lifting of the lifting plate 604.

[0029] Furthermore, a through groove is provided inside the movable plate 507 at the position corresponding to the insertion block 606, and the insertion block 606 is slidably installed in the through groove to facilitate the limiting operation of the movable plate 507.

[0030] In actual operation, when this device is used, the filter cartridge 502 is installed by threading the connecting sleeve 505 onto the outside of the positioning ring 506. The connecting pipe 501 is then installed on the front of the air inlet 4 using bolts. After moving the base 1 to a suitable position, the connecting pipe 501 is connected to the flue gas outlet pipe of the heat treatment furnace using bolts. The circulation pipe is connected to the air outlet of the induced draft fan body 3. The induced draft fan body 3 is then started to circulate and induced draft gas from the heat treatment furnace. With the cooperation of the filter cartridge 502, impurities in the flue gas are filtered. When it is necessary to clean the filter cartridge 502... 2. When disassembling and cleaning, after separating the circulation pipe from the air outlet of the blower body 3 by moving the air inlet 4 away from the connecting pipe 501, the blower body 3 is pushed to move with the cooperation of the moving plate 507 and the moving wheel 508. By rotating the wheel 603, the screw 602 and the lifting plate 604 are moved down. With the cooperation of the insert block 606, the moving plate 507 is limited after movement, which facilitates the maintenance of the blower body 3. By rotating the handle 504, the connecting sleeve 505 is moved away from the positioning ring 506, which facilitates the disassembly and cleaning of the filter cartridge 502.

[0031] 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.

Claims

1. A flue gas circulation and pressurization device for a heat treatment furnace, comprising a base (1) and a support frame (2), characterized in that: The top of the support frame (2) is fixedly installed with a blower body (3), the front of the blower body (3) is fixedly installed with an air inlet (4), the front of the air inlet (4) is provided with a filter mechanism (5), and the inner wall of the base (1) is provided with a limit mechanism (6).

2. The heat treatment furnace flue gas circulation induced draft pressurization device according to claim 1, characterized in that: The filtration mechanism (5) includes a connecting pipe (501), which is fixedly installed on the front of the air inlet (4). A filter cylinder (502) is movably installed inside the connecting pipe (501). A connecting plate (503) is fixedly installed on the back of the filter cylinder (502). A handle (504) is fixedly installed on the back of the connecting plate (503). A connecting sleeve (505) is fixedly installed on the front of the filter cylinder (502). A positioning ring (506) is fixedly installed on the inner wall of the front of the connecting pipe (501). A movable plate (507) is fixedly installed at the bottom of the support frame (2). The movable plate (507) is slidably installed on the inner wall of the base (1). A movable wheel (508) is fixedly installed at the bottom of the movable plate (507). The movable wheel (508) contacts the inner wall of the bottom of the base (1).

3. The heat treatment furnace flue gas circulation induced draft pressurization device according to claim 2, characterized in that: The inner wall of the connecting sleeve (505) is provided with an internal thread, and the outer side of the positioning ring (506) is provided with an external thread. The connecting sleeve (505) is threadedly installed on the outside of the positioning ring (506).

4. The heat treatment furnace flue gas circulation induced draft pressurization device according to claim 2, characterized in that: The limiting mechanism (6) includes a connecting frame (601), which is fixedly installed on the inner back wall of the base (1). A screw (602) is threaded inside the connecting frame (601). A rotating wheel (603) is fixedly installed on the top of the screw (602). A lifting plate (604) is rotatably installed on the bottom of the screw (602). A guide post (605) is fixedly installed on the top of the lifting plate (604). An insert block (606) is fixedly installed on the bottom of the lifting plate (604).

5. The heat treatment furnace flue gas circulation induced draft pressurization device according to claim 4, characterized in that: The connecting frame (601) has a through hole at the position corresponding to the guide post (605), and the guide post (605) is slidably installed in the through hole.

6. The heat treatment furnace flue gas circulation induced draft pressurization device according to claim 4, characterized in that: The movable plate (507) has a through groove at the position corresponding to the insertion block (606), and the insertion block (606) is slidably installed in the through groove.

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