Installation structure for filter screen of exhaust pipe

Abstract

The utility model belongs to the technical field of mechanical welding exhaust pipes, and discloses an exhaust pipe filter screen mounting structure which comprises a first mounting flange, a second mounting flange and a filter screen mounting plate. The filter screen mounting plate is located between the first mounting flange and the second mounting flange, a first mounting hole is formed in the filter screen mounting plate, and a first filter screen is mounted in the first mounting hole. Strip-shaped holes are formed in the two sides of the first mounting hole, and the two bolts sequentially penetrate through the first mounting flange, the strip-shaped holes and the second mounting flange. The bolts have a locking state and an unscrewing state, and when the two bolts are in the locking state, the first mounting flange, the filter screen mounting plate and the second mounting flange are locked and fixed. When the bolts are in an unscrewed state, the filter screen mounting plate is pulled to enable the bolts to relatively slide in the strip-shaped holes in the length direction of the strip-shaped holes, the first filter screen can be pulled away from or pulled into the position, opposite to a flange opening of the first mounting flange and a flange opening of the second mounting flange, of the first filter screen, rapid replacement of the first filter screen is achieved, and the working efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical welding exhaust pipes, in particular to an installation structure of an exhaust pipe filter screen. Background Technique

[0002] The exhaust pipe filter screen is a filter screen installed in the exhaust pipe to filter the gas passing through the exhaust pipe. To ensure the filtering effect of the filter screen, it is necessary to frequently disassemble, clean and reinstall the filter screen, or replace it with a new one. In the mechanical welding exhaust pipe, the filter screen is usually fixed between the upper and lower mounting flanges of the upper pipe by bolts. When the filter screen needs to be disassembled, all the fixing bolts need to be removed and then the filter screen is pulled out for cleaning or replacement, resulting in low work efficiency.

[0003] Therefore, it is urgent to propose an installation structure of an exhaust pipe filter screen to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide an installation structure of an exhaust pipe filter screen, which can realize the rapid replacement of the first filter screen and has high work efficiency.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The installation structure of the exhaust pipe filter screen includes:

[0007] The first mounting flange is connected to the port of the first air duct;

[0008] The second mounting flange is connected to the port of the second air duct;

[0009] The filter screen mounting plate is located between the first mounting flange and the second mounting flange. The filter screen mounting plate is provided with a first mounting hole, and a first filter screen is installed in the first mounting hole. Strip-shaped holes are arranged on both sides of the first mounting hole. Two bolts sequentially pass through the first mounting flange, the corresponding strip-shaped holes and the second mounting flange to connect the first mounting flange, the filter screen mounting plate and the second mounting flange;

[0010] The bolts have a locking state and a loosening state. When the two bolts are in the locking state, the first mounting flange, the filter screen mounting plate and the second mounting flange are locked and fixed. When the bolts are in the loosening state, the filter screen mounting plate is pulled so that the bolts slide relative to each other along the length direction of the corresponding strip-shaped holes, and the first filter screen can be pulled away from or pulled into a position directly opposite to the flange opening of the first mounting flange and the flange opening of the second mounting flange.

[0011] As an alternative technical solution for the installation structure of the air extraction pipe filter, when the bolt abuts against the first end of the strip-shaped hole in the length direction of the strip-shaped hole, the flange openings of the first mounting flange, the first filter screen, and the second mounting flange are directly opposite to each other.

[0012] As an alternative technical solution for the installation structure of the air extraction pipe filter, the strip-shaped hole has a second end opposite to the first end in the length direction of the strip-shaped hole. When the bolt abuts against the second end, the first filter screen does not overlap with either the first mounting flange or the second mounting flange.

[0013] As an alternative technical solution for the installation structure of the air extraction pipe filter, a second mounting hole is further provided between the two strip-shaped holes on the filter screen mounting plate. A second filter screen can be installed in the second mounting hole. When the bolt abuts against the second end, the flange openings of the first mounting flange, the second filter screen, and the second mounting flange are directly opposite to each other. When the bolt abuts against the first end, the second filter screen does not overlap with either the first mounting flange or the second mounting flange.

[0014] As an alternative technical solution for the installation structure of the air extraction pipe filter, the inner walls of the first end and the second end of the strip-shaped hole are arc-shaped.

[0015] As an alternative technical solution for the installation structure of the air extraction pipe filter, the filter screen mounting plate is a strip-shaped plate, and both of the two strip-shaped holes extend along the length direction of the strip-shaped plate.

[0016] As an alternative technical solution for the installation structure of the air extraction pipe filter, the two strip-shaped holes are arranged in parallel.

[0017] As an alternative technical solution for the installation structure of the air extraction pipe filter, chamfers are provided at the corners of the strip-shaped plate.

[0018] As an alternative technical solution for the installation structure of the air extraction pipe filter, connection holes are provided at both ends of the strip-shaped plate in the length direction. A connecting piece passes through the first mounting flange, the connection hole, and the second mounting flange to connect the first mounting flange, the strip-shaped plate, and the second mounting flange.

[0019] As an alternative technical solution for the installation structure of the air extraction pipe filter, the bolt is a plum blossom bolt.

[0020] The beneficial effects of the present utility model:

[0021] The installation structure of the exhaust duct filter screen provided by the utility model includes a first installation flange, a second installation flange and a filter screen installation plate. The first installation flange is connected to the port of the first air duct, and the second installation flange is connected to the port of the second air duct to realize the connection between the first air duct and the second air duct. The filter screen installation plate is located between the first installation flange and the second installation flange. The filter screen installation plate is provided with a first installation hole, and a first filter screen is installed in the first installation hole to filter the gas passing through the first filter screen. Strip-shaped holes are arranged on both sides of the first installation hole, and two bolts sequentially pass through the first installation flange, the corresponding strip-shaped holes and the second installation flange to connect the first installation flange, the filter screen installation plate and the second installation flange. The first filter screen can be installed between the first installation flange and the second installation flange through the filter screen installation plate. The bolts have a locked state and a loosened state. When the two bolts are in the locked state, the first installation flange, the filter screen installation plate and the second installation flange are locked and fixed. When the bolts are in the loosened state, the filter screen installation plate is pulled to make the bolts slide relative to the length direction of the strip-shaped holes in the corresponding strip-shaped holes, and the first filter screen can be pulled away from or pulled into a position directly opposite to the flange opening of the first installation flange and the flange opening of the second installation flange, realizing the installation and disassembly of the first filter screen and replacing the first filter screen. Compared with the prior art, the installation structure of the exhaust duct filter screen does not need to disassemble all the bolts. Only by loosening the bolts and pulling out the filter screen installation plate can the first filter screen be disassembled. After cleaning and replacement, the filter screen installation plate is pushed in to install the first filter screen, making the disassembly and assembly of the first filter screen convenient, thereby realizing the rapid replacement of the first filter screen and improving work efficiency. And because the bolts do not need to be disassembled, the loss of bolt parts can be prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 FIG. is a schematic structural diagram of the installation structure of the exhaust duct filter screen provided by the embodiment of the utility model;

[0023] Figure 2 FIG. is an assembly schematic diagram of the installation structure of the exhaust duct filter screen provided by the embodiment of the utility model and the first air duct and the second air duct.

[0024] In the figure:

[0025] 1. First air duct; 2. Second air duct; 100. First installation flange; 200. Second installation flange; 300. Filter screen installation plate; 301. Strip-shaped hole; 302. First installation hole; 303. Second installation hole; 304. Connection hole; 400. Bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the sake of description, only the parts related to the present utility model are shown in the drawings, rather than all the structures.

[0027] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0028] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above the", and "on the top of" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher horizontal height than the second feature. The first feature being "below", "below the", and "under the" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the first feature is at a lower horizontal height than the second feature.

[0029] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of description and simplifying the operation, 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. Therefore, it should not be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and do not have special meanings.

[0030] The installation structure of the air extraction pipe filter screen in this embodiment can achieve the rapid replacement of the first filter screen and has high working efficiency.

[0031] Specifically, as Figure 1 and Figure 2As shown in the figure, the installation structure of the exhaust duct filter screen includes a first installation flange 100, a second installation flange 200, and a filter screen installation plate 300. The first installation flange 100 is connected to the port of the first air duct 1, and the second installation flange 200 is connected to the port of the second air duct 2. The filter screen installation plate 300 is located between the first installation flange 100 and the second installation flange 200. The filter screen installation plate 300 is provided with a first installation hole 302, and a first filter screen is installed in the first installation hole 302. Strip-shaped holes 301 are provided on both sides of the first installation hole 302. Two bolts 400 are sequentially passed through the first installation flange 100, the corresponding strip-shaped holes 301, and the second installation flange 200 to connect the first installation flange 100, the filter screen installation plate 300, and the second installation flange 200. The bolts 400 have a locked state and a loosened state. When the two bolts 400 are in the locked state, the first installation flange 100, the filter screen installation plate 300, and the second installation flange 200 are locked and fixed. When the bolts 400 are in the loosened state, the filter screen installation plate 300 is pulled to make the bolts 400 slide relative to each other along the length direction of the corresponding strip-shaped holes 301 in the strip-shaped holes 301, and the first filter screen can be pulled away from or pulled into a position directly opposite to the flange ports of the first installation flange 100 and the second installation flange 200.

[0032] Based on the above design, the first installation flange 100 and the second installation flange 200 are respectively connected to the first air duct 1 and the second air duct 2 to realize the connection of the first air duct 1 and the second air duct 2. A first filter screen is installed on the filter screen installation plate 300 to filter the gas passing through the first filter screen. Two bolts 400 are sequentially passed through the first installation flange 100, the corresponding strip-shaped holes 301, and the second installation flange 200 to connect the first installation flange 100, the filter screen installation plate 300, and the second installation flange 200. When the bolts 400 are in the locked state, the first installation flange 100, the filter screen installation plate 300, and the second installation flange 200 are locked and fixed, and the first filter screen can be installed between the first installation flange 100 and the second installation flange 200 through the filter screen installation plate 300. When the bolts 400 are in the loosened state, the filter screen installation plate 300 is pulled to make the bolts 400 slide relative to each other along the length direction of the corresponding strip-shaped holes 301 in the strip-shaped holes 301, and the first filter screen can be pulled away from or pulled into a position directly opposite to the flange ports of the first installation flange 100 and the second installation flange 200, realizing the installation and disassembly of the first filter screen and replacing the first filter screen. Compared with the prior art, the installation structure of the exhaust duct filter screen does not require the disassembly of all the bolts 400. Only by loosening the bolts 400 and pulling out the filter screen installation plate 300 can the first filter screen be disassembled. After cleaning and replacement, the filter screen installation plate 300 is pushed in to install the first filter screen, making the disassembly and assembly of the first filter screen convenient, and thus realizing the rapid replacement of the first filter screen and improving work efficiency. And since the bolts 400 do not need to be disassembled, the loss of bolt 400 components can also be prevented.

[0033] In this embodiment, the bolt 400 is a plum blossom bolt, and the plum blossom bolt can be disassembled without using a screwing tool, further improving the replacement efficiency of the first filter screen.

[0034] In order to position the alignment of the flange opening of the first filter screen with the first mounting flange 100 and the flange opening of the second mounting flange 200, when the bolt 400 abuts against the first end of the strip hole 301 in the length direction, the flange opening of the first mounting flange 100, the first filter screen and the flange opening of the second mounting flange 200 are exactly opposite. And there is no need to additionally set a positioning member to realize the positioning and locking of the filter screen mounting plate 300, and then realize the installation of the first filter screen.

[0035] By the same token, in order to limit the pulling range of the filter screen mounting plate 300, the strip hole 301 has a second end opposite to the first end in the length direction of the strip hole 301. When the bolt 400 abuts against the second end, the first filter screen does not overlap with the first mounting flange 100 and the second mounting flange 200.

[0036] Continue as Figure 1 and Figure 2 shown, a second mounting hole 303 is also provided between the two strip holes 301 on the filter screen mounting plate 300. A second filter screen can be installed in the second mounting hole 303. When the bolt 400 abuts against the second end, the flange opening of the first mounting flange 100, the second filter screen and the flange opening of the second mounting flange 200 are exactly opposite. When the bolt 400 abuts against the first end, the second filter screen does not overlap with the first mounting flange 100 and the second mounting flange 200. The dual-position installation setting of the filter screen mounting plate 300 can install the first filter screen (when the second filter screen needs to be replaced) or the second filter screen (when the first filter screen needs to be replaced) on the filter screen mounting plate 300 in advance; after loosening the bolt 400, directly pull the filter screen mounting plate 300 to pull the first filter screen (the newly installed first filter screen) or the second filter screen (the newly installed second filter screen) to be opposite to the flange opening of the first mounting flange 100 and the flange opening of the second mounting flange 200, and then lock the bolt 400, so that when installing the first filter screen or the second filter screen on the filter screen mounting plate 300, the gas can still be filtered. If the first filter screen or the second filter screen needs to be cleaned and reinstalled, the time occupied by cleaning the second filter screen or the first filter screen is reasonably utilized.

[0037] Furthermore, the inner walls of the first end and the second end of the strip hole 301 are arc-shaped, which can be in full contact with the outer wall of the bolt 400, increasing the connection strength of the bolt 400.

[0038] In this embodiment, the filter screen mounting plate 300 is a strip-shaped plate, and the two strip holes 301 both extend along the length direction of the strip-shaped plate. The strip-shaped plate has a simple structure and saves materials.

[0039] In order to further save materials and enable the filter screen mounting plate 300 to be pulled out more smoothly, two strip-shaped holes 301 are arranged in parallel.

[0040] It should be noted that since the two strip-shaped holes 301 are parallel, the connecting lines between the first end of the strip-shaped hole 301 and the center of the first mounting hole 302, and the connecting lines between the second end of the strip-shaped hole 301 and the center of the second mounting hole 303 are both perpendicular to the length direction of the strip-shaped hole 301.

[0041] In this embodiment, the first mounting hole 302 and the second mounting hole 303 are the same and are both circular holes.

[0042] Continue as Figure 1 and Figure 2 shown, the corners of the strip-shaped plate are provided with chamfers to prevent the staff from being pricked during the pulling process.

[0043] In this embodiment, connecting holes 304 are provided at both ends of the strip-shaped plate in the length direction. The connecting piece passes through the first mounting flange 100, the connecting hole 304 and the second mounting flange 200 to connect the first mounting flange 100, the strip-shaped plate and the second mounting flange 200, increasing the connection stability of the filter screen mounting plate 300.

[0044] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. Installation structure of the exhaust duct filter screen, characterized in that Including: A first mounting flange (100) connected to the port of a first air duct (1); A second mounting flange (200) connected to the port of a second air duct (2); A filter mounting plate (300) located between the first mounting flange (100) and the second mounting flange (200). A first mounting hole (302) is provided on the filter mounting plate (300), and a first filter is installed in the first mounting hole (302). Strip-shaped holes (301) are provided on both sides of the first mounting hole (302). Two bolts (400) sequentially pass through the first mounting flange (100), the corresponding strip-shaped holes (301), and the second mounting flange (200) to connect the first mounting flange (100), the filter mounting plate (300), and the second mounting flange (200); The bolts (400) have a locked state and a loosened state. When the two bolts (400) are in the locked state, the first mounting flange (100), the filter mounting plate (300), and the second mounting flange (200) are locked and fixed. When the bolts (400) are in the loosened state, by pulling the filter mounting plate (300) to make the bolts (400) slide relative to each other along the length direction of the corresponding strip-shaped holes (301) in the strip-shaped holes (301), the first filter can be pulled away from or pulled into the position where the flange openings of the first mounting flange (100) and the second mounting flange (200) are directly opposite.

2. The installation structure of the air extraction pipe filter screen according to claim 1, characterized in that, When the bolts (400) abut against the first end of the strip-shaped hole (301) in the length direction, the flange opening of the first mounting flange (100), the first filter, and the flange opening of the second mounting flange (200) are directly opposite.

3. The installation structure of the exhaust duct filter screen according to claim 2, characterized in that, The strip-shaped hole (301) has a second end opposite to the first end along the length direction of the strip-shaped hole (301). When the bolts (400) abut against the second end, the first filter does not overlap with either the first mounting flange (100) or the second mounting flange (200).

4. The installation structure of the exhaust duct filter screen according to claim 3, characterized in that, A second mounting hole (303) is further provided between the two strip-shaped holes (301) on the filter mounting plate (300). A second filter can be installed in the second mounting hole (303). When the bolts (400) abut against the second end, the flange opening of the first mounting flange (100), the second filter, and the flange opening of the second mounting flange (200) are directly opposite. When the bolts (400) abut against the first end, the second filter does not overlap with either the first mounting flange (100) or the second mounting flange (200).

5. The installation structure of the exhaust pipe filter screen according to claim 4, characterized in that The inner walls of the first end and the second end of the strip-shaped hole (301) are arc-shaped.

6. The installation structure of the exhaust duct filter screen according to any one of claims 1-4, characterized in that, The filter mounting plate (300) is a strip-shaped plate, and the two strip-shaped holes (301) both extend along the length direction of the strip-shaped plate.

7. The installation structure of the exhaust duct filter screen according to claim 6, characterized in that, The two strip-shaped holes (301) are arranged in parallel.

8. The installation structure of the exhaust duct filter screen according to claim 6, characterized in that, The corners of the strip-shaped plate are provided with chamfers.

9. The installation structure of the exhaust duct filter screen according to claim 6, characterized in that, Connecting holes (304) are provided at both ends of the strip plate in the length direction, and a connecting member passes through the first mounting flange (100), the connecting holes (304) and the second mounting flange (200) to connect the first mounting flange (100), the strip plate and the second mounting flange (200).

10. The installation structure of the exhaust duct filter screen according to claim 1, characterized in that, The bolt (400) is a plum blossom bolt.

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