Municipal fuel gas pipeline filtering device

Abstract

The utility model discloses a municipal fuel gas pipeline filtering device which comprises a guide cylinder, a gas inlet pipe and a gas outlet pipe are arranged on the side face of the guide cylinder, one end of the gas outlet pipe is inserted into the guide cylinder, the end, inserted into the guide cylinder, of the gas outlet pipe is connected with a filter element, and the gas outlet pipe is communicated with an inner cavity of the filter element. A cover plate is arranged at an opening in the top end of the guide cylinder; the filter element is sleeved with a brush ring, the top end of the brush ring extends out of the top of the cover plate, an electric push rod is installed on the side face of the guide cylinder, and the output end of the electric push rod is connected with the top of the brush ring. A filter element is installed in the guide cylinder, fuel gas can be filtered through the filter element, a brush ring is arranged on the outer side of the filter element in a sleeving mode, an electric push rod is arranged on the outer side of the filter element, and the brush ring can be driven to move up and down through the electric push rod, so that the purpose of cleaning the surface of the filter element is achieved, and workers can be conveniently assisted in efficiently treating the surface of the filter element; and the fuel gas conveying efficiency is prevented from being influenced by too dirty surfaces of the filter elements.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering devices, in particular to a filtering device for municipal gas pipelines. Background Technique

[0002] When gas is transported, some impurities are easily mixed in the gas. Therefore, gas companies will install filtering devices at some positions of municipal gas pipelines to filter the gas inside the municipal gas pipelines.

[0003] In the prior art, a Chinese patent with the patent number CN202222407050.4 discloses a gas filtering device, including a filtering device, which includes a filtering box and a transmission device. The transmission device is installed on the inner wall of the filtering box. The filtering box includes an air inlet pipe, a valve, a secondary pipe, an air outlet pipe, a filter element, a warning light and a piston sleeve. The piston sleeve is installed at the side end of the filter element. The transmission device includes a transmission plate, a torsion spring, a connecting rod, a secondary pipe cover, a lever, an air outlet cover, a stop post and a button. The transmission plate is installed at the side end of the piston sleeve, and the torsion spring is installed at the side end of the transmission plate. After the piston sleeve is pushed out, the torsion spring restores, drives the transmission plate, and at the same time the connecting rod at its side end pulls up the secondary pipe cover. The connecting rod drives the lever at the side end, so that the air outlet cover rotates along the rotating shaft to another stop post. When the air outlet cover rotates to the stop post, it will be adsorbed, thus blocking the air outlet pipe, and allowing the gas to be introduced into the air outlet pipe through the secondary pipe, so as to achieve the purpose of still being able to use gas equipment when the filter element is blocked.

[0004] The gas filtering device provided by the above patent is not convenient for cleaning the filter element, resulting in troublesome cleaning of the filter element and being unfavorable for the staff to efficiently maintain the filtering device. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a filtering device for municipal gas pipelines, aiming to improve the problem that the existing gas filtering device is not convenient for cleaning the filter element, resulting in troublesome cleaning of the filter element and being unfavorable for the staff to efficiently maintain the filtering device.

[0006] The utility model is realized as follows:

[0007] A filtering device for municipal gas pipelines includes a flow guide cylinder. An air inlet pipe and an air outlet pipe are arranged on the side surface of the flow guide cylinder. One end of the air outlet pipe is inserted into the inside of the flow guide cylinder, and a filter element is connected to one end of the air outlet pipe inserted into the flow guide cylinder. The air outlet pipe is communicated with the inner cavity of the filter element. A cover plate is arranged at the top opening of the flow guide cylinder; A brush ring is sleeved on the filter element, the top of the brush ring protrudes from the top of the cover plate, and an electric push rod is installed on the side surface of the flow guide cylinder. The output end of the electric push rod is connected to the top of the brush ring.

[0008] Preferably, a first flange is provided at one end of the air outlet pipe and the air inlet pipe facing the outside, and a second flange is provided at the opening at the top of the guide cylinder; an installation platform is provided on the side surface of the guide cylinder, and installation grooves are provided at the corners of the installation platform; a sewage pipe is provided at the bottom end of the guide cylinder, and a sewage valve is provided on the sewage pipe; one end of the air outlet pipe inserted into the interior of the guide cylinder is provided with a connecting pipe, an internal thread is provided on the inner side surface of the connecting pipe, and an external thread is provided on the outer side surface of the connecting pipe; and a limiting ring is provided on the bottom surface of the connecting pipe.

[0009] Preferably, the bottom end of the filter element is provided with an opening, and the opening at the bottom end of the filter element is threadedly connected to the external thread on the outside of the connecting pipe; a groove is provided at the top end of the filter element, and a hexagonal joint is provided inside the groove.

[0010] Preferably, a plurality of through holes are evenly provided at the edge of the cover plate, and guide holes are symmetrically provided on both sides of the cover plate.

[0011] Preferably, bristles are provided on the inner side of the brush ring, and guide rods are symmetrically provided on both sides at the top of the brush ring. The guide rods pass through the through holes, and a connecting plate is provided at one end of the two guide rods passing through the through holes, and a connecting hole is provided at one end of the connecting plate.

[0012] Preferably, fixing plates are symmetrically provided on both sides of the electric push rod, and a plurality of fixing holes are provided on the fixing plates; a telescopic rod is provided at the output end of the electric push rod, a stud is provided at the top end of the telescopic rod, the stud passes through the connecting hole, and a compression cap is connected to one end of the stud passing through the connecting hole, and the compression cap presses against the upper surface of the fixing plate.

[0013] Preferably, a secondary filter cylinder is connected to the internal thread on the inner side of the connecting pipe, and the filter element is sleeved on the outside of the secondary filter cylinder; a disassembly and assembly joint is provided at the top end of the secondary filter cylinder, a connecting ring is provided at the bottom end of the secondary filter cylinder, and the connecting ring is threadedly connected to the connecting pipe.

[0014] Preferably, a bracket is provided at the bottom end of the guide cylinder, connecting rings are provided at the top and bottom ends of the bracket, a plurality of bolt holes are provided on the connecting rings, and the connecting ring at the top of the bracket is bolted to the guide cylinder.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. A brush ring is sleeved on the outside of the filter element of the present utility model, and an electric push rod is provided on the outside of the filter element. The electric push rod can drive the brush ring to move up and down, so as to achieve the purpose of cleaning the surface of the filter element, and further facilitate assisting the staff to efficiently process the surface of the filter element, and avoid the surface of the filter element being too dirty and affecting the gas transmission efficiency.

[0017] 2. A secondary filter cartridge is installed at one end inside the air outlet pipe of the utility model. Through the secondary filter cartridge, the gas can be further filtered, facilitating the sufficient purification of the gas.

[0018] 3. A bracket is installed at the bottom of the air guide cylinder of the utility model, facilitating the support of the entire gas filtration device, thereby facilitating the use of the entire gas filtration device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the schematic structural diagram of the whole utility model;

[0020] Figure 2 is the three-dimensional structural diagram of the air guide cylinder of the utility model;

[0021] Figure 3 is the structural diagram of the air guide cylinder of the utility model from a top-down perspective;

[0022] Figure 4 is the structural diagram of the filter element of the utility model;

[0023] Figure 5 is the structural diagram of the cover plate of the utility model;

[0024] Figure 6 is the structural diagram of the brush ring of the utility model;

[0025] Figure 7 is the structural diagram of the electric push rod of the utility model;

[0026] Figure 8 is the structural diagram of the secondary filter cartridge of the utility model;

[0027] Figure 9 is the structural diagram of the bracket of the utility model.

[0028] In the figure: 1. Flow guide cylinder; 11. Air outlet pipe; 12. First flange; 13. Second flange; 14. Air inlet pipe; 15. Installation table; 16. Installation groove; 17. Drain pipe; 18. Drain valve; 19. Adapter pipe; 191. Limit ring; 2. Filter element; 21. Groove; 22. Hexagonal joint; 3. Cover plate; 31. Guide hole; 32. Perforation; 4. Brush ring; 41. Brush bristles; 42. Guide rod; 43. Connecting plate; 44. Connecting hole; 5. Electric push rod; 51. Fixed plate; 52. Fixed hole; 53. Telescopic rod; 54. Stud; 55. Compression cap; 6. Secondary filter cartridge; 61. Adapter ring; 62. Disassembly and assembly joint; 7. Bracket; 71. Connecting ring; 72. Bolt hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. 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 circumstances.

[0030] The following is a further description in conjunction with the drawings and specific embodiments:

[0031] Embodiment 1

[0032] As Figure 1 、 Figure 2 and Figure 3 shown, a municipal gas pipeline filtering device includes a diversion cylinder 1. The side of the diversion cylinder 1 is provided with an intake pipe 14 and an outlet pipe 11. The diversion cylinder 1 is convenient for guiding the gas. The intake pipe 14 is convenient for the gas to enter the inside of the diversion cylinder 1. The outlet pipe 11 is convenient for the filtered gas to be discharged. One end of the outlet pipe 11 is inserted into the inside of the diversion cylinder 1, and a filter element 2 is connected to one end of the outlet pipe 11 inserted into one end of the diversion cylinder 1. The outlet pipe 11 communicates with the inner cavity of the filter element 2, and the filter element 2 is convenient for filtering the gas. A cover plate 3 is provided at the top opening of the diversion cylinder 1; the cover plate 3 is convenient for sealing the top opening of the diversion cylinder 1. A brush ring 4 is sleeved on the filter element 2, and the brush ring 4 is convenient for cleaning the surface of the filter element 2. The top of the brush ring 4 protrudes from the top of the cover plate 3, and an electric push rod 5 is installed on the side of the diversion cylinder 1. The output end of the electric push rod 5 is connected to the top of the brush ring 4; this structure is convenient for the electric push rod 5 to drive the brush ring 4 to move up and down, so as to facilitate cleaning the surface of the filter element 2.

[0033] As Figure 2 and Figure 3As shown, at one end of the air outlet pipe 11 and the air inlet pipe 14 facing outward, there is a first flange 12, which is convenient for connecting with the gas transmission pipeline. At the top opening of the guide cylinder 1, there is a second flange 13; the second flange 13 is convenient for connecting with the cover plate 3 through bolts. On the side of the guide cylinder 1, there is an installation platform 15, and at the corners of the installation platform 15, there are installation grooves 16; the cooperation of the installation platform 15 and the installation grooves 16 is convenient for the use of the electric push rod 5 and facilitates the installation and fixation of the electric push rod 5. At the bottom end of the guide cylinder 1, there is a sewage pipe 17, and on the sewage pipe 17, there is a sewage valve 18; the cooperation of the exhaust pipe and the sewage valve 18 is convenient for treating the dust cleaned by the brush ring 4. At one end of the air outlet pipe 11 inserted into the inside of the guide cylinder 1, there is a transition pipe 19. The inner side of the transition pipe 19 has internal threads, and the outer side of the transition pipe 19 has external threads; and a limit ring 191 is provided on the bottom surface of the transition pipe 19; this structure is convenient for the transition pipe 19 to be stably thread-connected with the filter element 2, facilitating the disassembly, assembly and use of the filter element 2.

[0034] As Figure 4 shown, the bottom end of the filter element 2 is provided with an opening, and the opening at the bottom end of the filter element 2 is thread-connected with the external threads on the outside of the transition pipe 19; this structure is convenient for the disassembly, assembly and replacement of the filter element 2. At the top end of the filter element 2, there is a groove 21, and inside the groove 21, there is a hexagonal joint 22; the cooperation of the groove 21 and the hexagonal joint 22 is convenient for the disassembly and assembly of the filter element 2.

[0035] As Figure 5 shown, a plurality of through holes 32 are evenly provided at the edge of the cover plate 3, and the through holes 32 are convenient for the cover plate 3 to be connected to the top opening of the guide cylinder through bolts. On both sides of the cover plate 3, there are symmetrically arranged guide holes 31, and the guide holes 31 are convenient for the brush ring 4 to move up and down.

[0036] As Figure 6 shown, on the inner side of the brush ring 4, there are bristles 41, and the bristles 41 are convenient for cleaning the surface of the filter element 2. And on both sides of the top of the brush ring 4, there are symmetrically arranged guide rods 42, and the guide rods 42 pass through the through holes 32. This structure can ensure the up and down movement of the brush ring 4. At one end of the two guide rods 42 passing through the through holes 32, there is a connecting plate 43, and at one end of the connecting plate 43, there is a connecting hole 44; the cooperation of the connecting plate 43 and the connecting hole 44 is convenient for the use of the guide rod 42 and the electric push rod 5.

[0037] As Figure 7 shown, on both sides of the electric push rod 5, there are symmetrically arranged fixing plates 51, and on the fixing plates 51, there are a plurality of fixing holes 52; the structure of the cooperation of the fixing plates 51 and the fixing holes 52 is convenient for fixing the electric push rod 5 through bolts. At the output end of the electric push rod 5, there is a telescopic rod 53, and at the top end of the telescopic rod 53, there is a stud 54. The stud 54 passes through the connecting hole 44, and at one end of the stud 54 passing through the connecting hole 44, there is a compression cap 55, and the compression cap 55 is pressed against the upper surface of the fixing plate 51; this structure is convenient for the telescopic rod 53 to be connected with the connecting plate 43 and facilitates driving the brush ring 4 to move up and down through the telescopic rod 53.

[0038] Working principle: When in use, the whole filtering device is installed inside the gas transmission pipeline according to the usage requirements. Then, when the gas enters the guide cylinder 1, it will be filtered by the filter element 2, and the gas filtered by the filter element 2 is discharged through the air outlet pipe 11. When it is necessary to clean the filter element 2, the electric push rod 5 can be driven to drive the brush bolt to move up and down, and the dust on the surface of the filter element 2 is cleaned through the brush ring 4. Then, the sewage discharge valve 18 is opened to enable the sewage discharge pipe 17 to discharge the dust inside the guide cylinder 1, so as to achieve the purpose of cleaning the filter element 2. Compared with the prior art, the filter element 2 is installed inside the guide cylinder 1 of the present application, and the gas can be filtered through the filter element 2. A brush ring 4 is sleeved outside the filter element 2, and an electric push rod 5 is arranged outside the filter element 2. The electric push rod 5 can drive the brush ring 4 to move up and down, so as to achieve the purpose of cleaning the surface of the filter element 2, and further facilitate the staff to efficiently process the surface of the filter element 2, and avoid the surface of the filter element 2 being too dirty to affect the gas transmission efficiency.

[0039] Embodiment 2

[0040] As Figure 1 、 Figure 2 and Figure 3 shown, a municipal gas pipeline filtering device includes a guide cylinder 1. An air inlet pipe 14 and an air outlet pipe 11 are arranged on the side of the guide cylinder 1. The guide cylinder 1 is convenient for guiding the gas. The air inlet pipe 14 is convenient for the gas to enter the inside of the guide cylinder 1, and the air outlet pipe 11 is convenient for the filtered gas to be discharged. One end of the air outlet pipe 11 is inserted into the inside of the guide cylinder 1, and a filter element 2 is connected to one end of the air outlet pipe 11 inserted into one end of the guide cylinder 1. The air outlet pipe 11 communicates with the inner cavity of the filter element 2, and the filter element 2 is convenient for filtering the gas. A cover plate 3 is arranged at the top opening of the guide cylinder 1; the cover plate 3 is convenient for blocking the top opening of the guide cylinder 1. A brush ring 4 is sleeved on the filter element 2, and the brush ring 4 is convenient for cleaning the surface of the filter element 2. The top of the brush ring 4 protrudes from the top of the cover plate 3, and an electric push rod 5 is installed on the side of the guide cylinder 1. The output end of the electric push rod 5 is connected to the top of the brush ring 4; this structure is convenient for the electric push rod 5 to drive the brush ring 4 to move up and down, so as to facilitate cleaning the surface of the filter element 2.

[0041] As Figure 2 and Figure 3As shown in the figure, the outer ends of the air outlet pipe 11 and the air inlet pipe 14 are provided with a first flange 12, which is convenient for connecting with the gas transmission pipeline. The top opening of the guide cylinder 1 is provided with a second flange 13; the second flange 13 is convenient for connecting with the cover plate 3 through bolts. The side surface of the guide cylinder 1 is provided with a mounting table 15, and the corners of the mounting table 15 are provided with mounting grooves 16; the cooperation of the mounting table 15 and the mounting grooves 16 is convenient for the use of the electric push rod 5 and facilitates the installation and fixation of the electric push rod 5. The bottom end of the guide cylinder 1 is provided with a sewage pipe 17, and a sewage valve 18 is provided on the sewage pipe 17; the cooperation of the exhaust pipe and the sewage valve 18 is convenient for treating the dust cleaned by the brush ring 4. The end of the air outlet pipe 11 inserted into the interior of the guide cylinder 1 is provided with a transition pipe 19, the inner side surface of the transition pipe 19 is provided with internal threads, and the outer side surface of the transition pipe 19 is provided with external threads; and a limiting ring 191 is provided on the bottom surface of the transition pipe 19; this structure is convenient for the transition pipe 19 to be stably threadedly connected with the filter element 2 and facilitates the disassembly, assembly and use of the filter element 2.

[0042] As Figure 4 shown, the bottom end of the filter element 2 is provided with an opening, and the opening at the bottom end of the filter element 2 is threadedly connected with the external threads on the outer side of the transition pipe 19; this structure is convenient for the disassembly, assembly and replacement of the filter element 2. The top end of the filter element 2 is provided with a groove 21, and a hexagonal joint 22 is provided inside the groove 21; the cooperation of the groove 21 and the hexagonal joint 22 is convenient for the disassembly and assembly of the filter element 2.

[0043] As Figure 5 shown, a plurality of through holes 32 are evenly provided on the edge of the cover plate 3, and the through holes 32 are convenient for the cover plate 3 to be connected to the top opening of the air guide cylinder through bolts. Guide holes 31 are symmetrically provided on both sides of the cover plate 3, and the guide holes 31 are convenient for the brush ring 4 to move up and down.

[0044] As Figure 6 shown, bristles 41 are provided on the inner side of the brush ring 4, and the bristles 41 are convenient for cleaning the surface of the filter element 2. And guide rods 42 are symmetrically provided on both sides of the top of the brush ring 4, and the guide rods 42 pass through the through holes 32, and this structure can ensure the up and down movement of the brush ring 4. Connecting plates 43 are provided at the ends of the two guide rods 42 passing through the through holes 32, and a connecting hole 44 is provided at one end of the connecting plate 43; the cooperation of the connecting plate 43 and the connecting hole 44 is convenient for the use of the guide rod 42 and the electric push rod 5.

[0045] As Figure 7 shown, fixing plates 51 are symmetrically provided on both sides of the electric push rod 5, and a plurality of fixing holes 52 are provided on the fixing plates 51; the structure of the cooperation of the fixing plates 51 and the fixing holes 52 is convenient for fixing the electric push rod 5 through bolts. The output end of the electric push rod 5 is provided with a telescopic rod 53, a stud 54 is provided at the top of the telescopic rod 53, the stud 54 passes through the connecting hole 44, and a compression cap 55 is connected to the end of the stud 54 passing through the connecting hole 44, and the compression cap 55 is pressed against the upper surface of the fixing plate 51; this structure is convenient for the telescopic rod 53 to be connected with the connecting plate 43 and facilitates driving the brush ring 4 to move up and down through the telescopic rod 53.

[0046] As Figure 1 and Figure 8 shown, the internal thread inside the adapter pipe 19 is connected to the secondary filter cartridge 6, and the filter element 2 is sleeved outside the secondary filter cartridge 6; this structure facilitates the second filtration treatment of the gas. The top of the secondary filter cartridge 6 is provided with a disassembly and assembly joint 62, and the disassembly and assembly joint 62 facilitates the disassembly, assembly and use of the secondary filter cartridge 6. The bottom of the secondary filter cartridge 6 is provided with an adapter ring 61, and the adapter ring 61 is threadedly connected to the adapter pipe 19.

[0047] Embodiment 3

[0048] As Figure 1 、 Figure 2 and Figure 3 shown, a municipal gas pipeline filtering device includes a guide cylinder 1. An air inlet pipe 14 and an air outlet pipe 11 are provided on the side of the guide cylinder 1. The guide cylinder 1 facilitates the diversion of the gas. The air inlet pipe 14 facilitates the entry of the gas into the interior of the guide cylinder 1, and the air outlet pipe 11 facilitates the discharge of the filtered gas. One end of the air outlet pipe 11 is inserted into the interior of the guide cylinder 1, and a filter element 2 is connected to one end of the air outlet pipe 11 inserted into one end of the guide cylinder 1. The air outlet pipe 11 communicates with the inner cavity of the filter element 2, and the filter element 2 facilitates the filtration of the gas. A cover plate 3 is provided at the top opening of the guide cylinder 1; the cover plate 3 facilitates the sealing of the top opening of the guide cylinder 1. A brush ring 4 is sleeved on the filter element 2, and the brush ring 4 facilitates the cleaning of the surface of the filter element 2. The top of the brush ring 4 protrudes from the top of the cover plate 3, and an electric push rod 5 is installed on the side of the guide cylinder 1. The output end of the electric push rod 5 is connected to the top of the brush ring 4; this structure facilitates the electric push rod 5 to drive the brush ring 4 to move up and down, thereby facilitating the cleaning of the surface of the filter element 2.

[0049] As Figure 2 and Figure 3 shown, first flange plates 12 are provided at the outer ends of the air outlet pipe 11 and the air inlet pipe 14, and the first flange plates 12 facilitate the connection with the gas transmission pipeline. A second flange plate 13 is provided at the top opening of the guide cylinder 1; the second flange plate 13 facilitates the connection with the cover plate 3 through bolts. An installation platform 15 is provided on the side of the guide cylinder 1, and installation grooves 16 are provided at the corners of the installation platform 15; the cooperation of the installation platform 15 and the installation grooves 16 facilitates the use of the electric push rod 5 and the installation and fixation of the electric push rod 5. A sewage pipe 17 is provided at the bottom of the guide cylinder 1, and a sewage valve 18 is provided on the sewage pipe 17; the cooperation of the exhaust pipe and the sewage valve 18 facilitates the treatment of the dust cleaned by the brush ring 4. One end of the air outlet pipe 11 inserted into the interior of the guide cylinder 1 is provided with an adapter pipe 19. The inner side surface of the adapter pipe 19 is provided with an internal thread, and the outer side surface of the adapter pipe 19 is provided with an external thread; and a limit ring 191 is provided at the bottom surface of the adapter pipe 19; this structure facilitates the stable threaded connection of the adapter pipe 19 with the filter element 2 and facilitates the disassembly, assembly and use of the filter element 2.

[0050] AsFigure 4 As shown, the bottom end of the filter element 2 is provided with an opening, and the opening at the bottom end of the filter element 2 is threadedly connected to the external thread on the outer side of the adapter pipe 19; this structure facilitates the disassembly, assembly and replacement of the filter element 2. A groove 21 is provided at the top end of the filter element 2, and a hexagon joint 22 is provided inside the groove 21; the cooperation of the groove 21 and the hexagon joint 22 facilitates the disassembly and assembly of the filter element 2.

[0051] As Figure 5 shown, a plurality of perforations 32 are evenly provided at the edge of the cover plate 3, and the perforations 32 facilitate the connection of the cover plate 3 to the top opening of the air guide cylinder through bolts. Guide holes 31 are symmetrically provided on both sides of the cover plate 3, and the guide holes 31 facilitate the up and down movement of the brush ring 4.

[0052] As Figure 6 shown, bristles 41 are provided on the inner side of the brush ring 4, and the bristles 41 facilitate the cleaning of the surface of the filter element 2. Guide rods 42 are symmetrically provided on both sides at the top of the brush ring 4, and the guide rods 42 pass through the perforations 32. This structure can ensure the up and down movement of the brush ring 4. Connecting plates 43 are provided at one ends of the two guide rods 42 passing through the perforations 32, and connection holes 44 are provided at one end of the connecting plates 43; the cooperation of the connecting plates 43 and the connection holes 44 facilitates the use of the guide rods 42 and the electric push rod 5.

[0053] As Figure 7 shown, fixing plates 51 are symmetrically provided on both sides of the electric push rod 5, and a plurality of fixing holes 52 are provided on the fixing plates 51; the structure of the cooperation of the fixing plates 51 and the fixing holes 52 facilitates the fixing of the electric push rod 5 through bolts. A telescopic rod 53 is provided at the output end of the electric push rod 5, a stud 54 is provided at the top end of the telescopic rod 53, the stud 54 passes through the connection hole 44, and a compression cap 55 is connected to one end of the stud 54 passing through the connection hole 44, and the compression cap 55 is pressed against the upper surface of the fixing plate 51; this structure facilitates the connection of the telescopic rod 53 to the connecting plate 43 and facilitates the up and down movement of the brush ring 4 driven by the telescopic rod 53.

[0054] As Figure 1 and Figure 8 shown, a secondary filter cylinder 6 is connected to the internal thread inside the adapter pipe 19, and the filter element 2 is sleeved outside the secondary filter cylinder 6; this structure facilitates the secondary filtration treatment of the gas. A disassembly and assembly joint 62 is provided at the top end of the secondary filter cylinder 6, and the disassembly and assembly joint 62 facilitates the disassembly, assembly and use of the secondary filter cylinder 6. A transfer ring 61 is provided at the bottom end of the secondary filter cylinder 6, and the transfer ring 61 is threadedly connected to the adapter pipe 19.

[0055] As Figure 1 and Figure 9 shown, a bracket 7 is provided at the bottom end of the guide cylinder 1, and the bracket 7 is used to stably support the entire filtering device. Connection rings 71 are provided at both the top end and the bottom end of the bracket 7, and a plurality of bolt holes 72 are provided on the connection rings 71. The connection ring 71 at the top of the bracket 7 is connected to the guide cylinder 1 through bolts; it is convenient for the bracket 7 to be stably connected and fixed to the filtering device.

[0056] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A municipal gas pipeline filtering device, comprising a flow guide cylinder (1), characterized in that, The side of the draft tube (1) is provided with an air inlet pipe (14) and an air outlet pipe (11). One end of the air outlet pipe (11) is inserted into the interior of the draft tube (1), and a filter element (2) is connected to one end of the air outlet pipe (11) inserted into one end of the draft tube (1). The air outlet pipe (11) communicates with the inner cavity of the filter element (2). A cover plate (3) is provided at the top opening of the draft tube (1); a brush ring (4) is sleeved on the filter element (2), and the top of the brush ring (4) protrudes from the top of the cover plate (3). An electric push rod (5) is installed on the side of the draft tube (1), and the output end of the electric push rod (5) is connected to the top of the brush ring (4).

2. The municipal gas pipeline filtering device according to claim 1, wherein The outer ends of the air outlet pipe (11) and the air inlet pipe (14) are provided with first flange plates (12), and a second flange plate (13) is provided at the top opening of the draft tube (1); an installation platform (15) is provided on the side of the draft tube (1), and installation grooves (16) are provided at the corners of the installation platform (15); a sewage discharge pipe (17) is provided at the bottom end of the draft tube (1), and a sewage discharge valve (18) is provided on the sewage discharge pipe (17); one end of the air outlet pipe (11) inserted into the interior of the draft tube (1) is provided with a transfer pipe (19). The inner side of the transfer pipe (19) is provided with internal threads, and the outer side of the transfer pipe (19) is provided with external threads; and a limit ring (191) is provided at the bottom surface of the transfer pipe (19).

3. A municipal gas pipeline filtering device according to claim 2, characterized in that, The bottom end of the filter element (2) is open, and the open bottom end of the filter element (2) is threadedly connected to the external threads outside the transfer pipe (19); a groove (21) is provided at the top end of the filter element (2), and a hexagonal joint (22) is provided inside the groove (21).

4. A municipal gas pipeline filtering device according to claim 1, characterized in that, A plurality of through holes (32) are evenly provided at the edge of the cover plate (3), and guide holes (31) are symmetrically provided on both sides of the cover plate (3).

5. A municipal gas pipeline filtering device according to claim 4, characterized in that, Brush hairs (41) are provided on the inner side of the brush ring (4), and guide rods (42) are symmetrically provided on both sides of the top of the brush ring (4). The guide rods (42) pass through the through holes (32). One end of the two guide rods (42) passing through the through holes (32) is provided with a connecting plate (43), and a connecting hole (44) is provided at one end of the connecting plate (43).

6. The municipal gas pipeline filtering device according to claim 5, characterized in that, Fixing plates (51) are symmetrically provided on both sides of the electric push rod (5), and a plurality of fixing holes (52) are provided on the fixing plates (51); a telescopic rod (53) is provided at the output end of the electric push rod (5), and a stud (54) is provided at the top end of the telescopic rod (53). The stud (54) passes through the connecting hole (44), and a compression cap (55) is connected to one end of the stud (54) passing through the connecting hole (44). The compression cap (55) presses against the upper surface of the fixing plate (51).

7. The municipal gas pipeline filtering device according to claim 2, wherein, A secondary filter cylinder (6) is connected to the internal threads inside the transfer pipe (19), and the filter element (2) is sleeved outside the secondary filter cylinder (6); a disassembly and assembly joint (62) is provided at the top end of the secondary filter cylinder (6), and an adapter ring (61) is provided at the bottom end of the secondary filter cylinder (6). The adapter ring (61) is threadedly connected to the transfer pipe (19).

8. A municipal gas pipeline filtering device according to any one of claims 1-7, characterized in that, The bottom end of the draft tube (1) is provided with a bracket (7). Both the top end and the bottom end of the bracket (7) are provided with connecting rings (71). A plurality of bolt holes (72) are provided on the connecting rings (71). The connecting ring (71) at the top of the bracket (7) is bolted to the draft tube (1).

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