Air inlet filter components and mobile GIS installation fresh air system purification device

Abstract

The present invention relates to a fresh air system purification device in a GIS installation dustproof shed, and discloses an air intake filter assembly and a mobile GIS installation fresh air system purification device, comprising an air intake pipe (1) and an air outlet pipe (2), and also comprising an air intake filter assembly arranged at the pipe opening of the air intake pipe (1), the air intake filter assembly comprising a filter cloth mounting frame (101) that can be mounted at the pipe opening of the air intake pipe (1), and a filter cloth (102) that can cover the pipe opening of the air intake pipe (1) is mounted on the filter cloth mounting frame (101). The present invention achieves pre-treatment of the air entering the dustproof shed by arranging the filter cloth (102) at the pipe opening of the air intake pipe (1), thereby effectively reducing the load of the fresh air purification device and increasing the service life of its filter element.

Description

Technical Field

[0001] The present invention relates to a GIS installation, in particular to a fresh air system purification device in a GIS installation dustproof shed. Background Art

[0002] Mobile GIS equipment has high environmental requirements during installation and operation. A special dustproof shed will be set up to protect it. The dustproof shed will also be equipped with a fresh air system to maintain the cleanliness of the internal air.

[0003] The existing fresh air system purification device generally includes an air inlet pipe connected to the outside world and an air outlet pipe for extracting the air in the dustproof shed. The rear end of the air inlet pipe is connected to the air purification device, and the air can enter the dustproof shed only after being purified.

[0004] This type of mobile GIS equipment is generally installed at construction sites, where there is a lot of dust in the air. The air entering through the air inlet duct will actually put a large load on the air purification device, which will lead to a short service life of the filter element of the purification device. It is often necessary to replace the filter element multiple times within a construction cycle. This type of purification device is generally large and medium-sized equipment, and its filter element replacement is relatively inconvenient and costly. Therefore, it is necessary to increase the service life of the filter element of the purification equipment. Summary of the Invention

[0005] The present invention aims to solve the problems existing in the fresh air system purification device of the GIS installation dustproof shed in the prior art and provides an air intake filter assembly and a mobile GIS installation fresh air system purification device.

[0006] In order to solve the above technical problems, the present invention is solved by the following technical solutions:

[0007] The air inlet filter assembly comprises a filter cloth mounting frame which can be mounted at the air inlet pipe orifice, and a filter cloth which can cover the air inlet pipe orifice is mounted on the filter cloth mounting frame.

[0008] Preferably, the filter cloth mounting frame includes two mounting frame assemblies that can be clamped at the air inlet duct opening. Each mounting frame assembly has a filter cloth winding chamber, and a filter cloth take-up roller is provided in the filter cloth take-up chamber. Opposite sides of the two mounting frame assemblies are provided with filter cloth extension ports that communicate with the filter cloth take-up chamber. The ends of the filter cloth extend into the filter cloth take-up chamber through the two filter cloth extension ports and are wound around the filter cloth take-up rollers. The filter cloth is wound and unwound by the filter cloth take-up rollers, enabling rapid and stable replacement of the filter cloth.

[0009] Preferably, a mounting bracket connecting rod is provided between the two mounting bracket assemblies to connect the two mounting bracket assemblies. Both mounting bracket assemblies are provided with connecting rod mounting bases. The ends of the mounting bracket connecting rod pass through the connecting rod mounting bases on the two mounting bracket assemblies and are fastened to the connecting rod mounting bases via fastening nuts. The distance between the mounting brackets is adjustable, allowing them to accommodate air inlet ducts of varying diameters.

[0010] Preferably, the winding roller includes a roller body positioned within a filter cloth winding chamber and a roller end extending out of the filter cloth winding chamber. A winding roller limiting mechanism is provided at the roller end. The winding roller limiting mechanism includes a rotation limiting ring sleeved on the roller end. The rotation limiting ring is capable of axial movement along the roller end and forms a rotation limit with the roller end. A limiting rod is provided on the end surface of the rotation limiting ring facing the mounting frame assembly and is axially arranged along the winding roller. A limiting hole is provided on the outer surface of the mounting frame assembly. The limiting rod can be inserted into the limiting hole when the limiting ring moves axially along the winding roller. The rotation limiting ring can prevent the filter cloth winding roller from rotating, thereby maintaining stable operation of the filter cloth on the filter cloth winding roller in this state.

[0011] Preferably, the winding roller limiting mechanism further includes two axial limiting rings threadedly connected to the roller body, with the filter cloth being limited between the two axial limiting rings. The axial limiting rings ensure that the filter cloth on the winding roller is optimally wound and that the filter cloth can be smoothly inserted into or extended from the filter cloth extension opening.

[0012] Preferably, the mounting frame assembly is further provided with a filter cloth pressing mechanism for pressing the filter cloth against the end face of the air inlet duct orifice. The filter cloth pressing mechanism includes a pressure ring assembly for pressing the filter cloth and a pressure frame for driving the pressure ring assembly toward the filter cloth. The pressure frame is slidably disposed on the outer surface of the mounting frame assembly and slides axially along the air inlet duct. The provision of the pressure frame can provide sufficient pressure to the pressure ring assembly, ensuring that the pressure ring assembly can stably press the filter cloth against the end face of the air inlet duct orifice.

[0013] Preferably, the pressing frame includes a U-shaped connecting plate and an L-shaped movable plate, the two ends of the connecting plate being respectively engaged with two opposite side surfaces of the mounting frame assembly and being capable of linearly sliding on the side surfaces of the mounting frame in the direction of pressing the filter cloth, one end of the movable plate being connected to the connecting plate, and the other end being provided with a push post axially arranged in the direction of pressing the filter cloth, and a push countersunk hole for inserting the push post on the end surface of the pressure ring assembly facing away from the filter cloth. The cooperation between the push post and the push countersunk hole can ensure that the pressing frame limits the pressure ring assembly, ensures that stable pressure is provided, and prevents the pressure ring assembly from rotating, thereby ensuring the stability of the pressure ring assembly's pressing state on the filter cloth.

[0014] Preferably, the pressure ring assembly includes multiple coaxially arranged and separable circular rings, with adjacent circular rings connected internally and externally by threads, and the end faces of the multiple circular rings facing the filter cloth being coplanar. A stopper is provided on the end face of the inner circular ring facing away from the filter cloth to axially limit the end face of the adjacent circular ring facing away from the filter cloth. The provision of the stopper ensures that the different circular rings are coplanar, thereby enabling the multiple circular rings to jointly compress the edge of the filter cloth at the inlet duct opening.

[0015] Preferably, a compression frame stopper assembly is also included. The compression frame stopper assembly comprises a buckle hinged to the upper end of the connecting plate and a slot located on the upper end surface of the mounting frame assembly for the buckle to engage. When the buckle engages the slot, the pressure ring assembly presses the filter cloth against the end surface of the air inlet pipe. The arrangement of the buckle and the slot ensures the stability of the compression frame when compressing the filter cloth, ensuring that it can provide continuous pressure.

[0016] The mobile GIS is equipped with a fresh air system purification device, which includes an air inlet pipe and an air outlet pipe, and also includes the aforementioned air inlet filter component, which is arranged at the pipe opening of the air inlet pipe.

[0017] The present invention has significant technical effects due to the adoption of the above technical solutions:

[0018] The present invention pre-treats the air entering the dustproof shed by arranging a filter cloth at the orifice of the air inlet duct, which can effectively reduce the load of the fresh air purification device and extend the service life of its filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of embodiment 1 of the present invention.

[0020] Figure 2 yes Figure 1 Installation diagram of the middle air inlet filter assembly.

[0021] Figure 3 yes Figure 2 Schematic diagram of the structure of the middle air inlet filter assembly.

[0022] Figure 4 yes Figure 3 Schematic diagram of the structure of the mounting frame assembly.

[0023] Figure 5 yes Figure 4 Schematic diagram of the internal structure.

[0024] Figure 6 yes Figure 5 A partial enlarged view of part A.

[0025] Figure 7 yes Figure 3Schematic diagram of the structure of the intermediate clamping frame.

[0026] Figure 8 yes Figure 3 Schematic diagram of the structure of the medium pressure ring assembly. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0028] Example 1

[0029] This embodiment provides a mobile GIS installation fresh air system purification device, such as Figures 1-8 As shown, it includes a fresh air purification device 3 installed in the dustproof shed and connected to the inside of the dustproof shed. The dustproof shed is also provided with an air outlet pipe 2, and the air outlet pipe 2 is also provided with an exhaust device.

[0030] An air inlet pipe 1 is installed at the air inlet end of the fresh air purification device 3. The fresh air purification device 3 is used to purify the air sucked into the air inlet pipe 1 and then flow it into the dustproof shed 4. The front end of the air inlet pipe 1, that is, the inlet end of the air inlet pipe 1 is provided with an air inlet filter assembly. The air inlet filter assembly includes a filter cloth mounting frame 101 that can be installed at the pipe mouth of the air inlet pipe 1. The filter cloth mounting frame 101 is equipped with a filter cloth 102 that can cover the pipe mouth of the air inlet pipe 1.

[0031] The air intake filter assembly is used to pre-treat the air entering the air intake duct 1. The air entering the air intake duct 1 is filtered through the filter cloth 102 before entering the air intake duct 1. This reduces the dust content in the air entering the air intake duct 1, thereby reducing the load of the fresh air purification device and increasing the service life of the filter element in the fresh air purification device. The filter cloth 102 can be made of materials such as non-woven fabric, polyester fiber, or polypropylene fiber.

[0032] In this embodiment, in order to facilitate the installation and quick replacement of the filter cloth 102, the filter cloth mounting frame 101 is structurally designed. Specifically:

[0033] The filter cloth mounting frame 101 includes two mounting frame assemblies 103 that can be clamped at the pipe mouth of the air inlet pipe 1, and a filter cloth winding chamber 104 is provided in each of the two mounting frame assemblies 103, and a filter cloth winding roller 105 is provided in the filter cloth winding chamber 104. The opposite sides of the two mounting frame assemblies 103 are provided with filter cloth extension ports 106 that are connected to the filter cloth winding chamber 104, and the two ends of the filter cloth 102 are respectively extended into the filter cloth winding chamber 104 through the two filter cloth extension ports 106 and wound on the filter cloth winding roller 105.

[0034] The filter cloth mounting frame 101 is clamped at the pipe mouth of the air inlet pipe 1 by two mounting frame assemblies 103 and a mounting frame connecting rod, wherein an elastic rubber pad can be provided on the clamping side to ensure the clamping stability; a mounting frame connecting rod 107 for connecting the two mounting frame assemblies 103 is provided between the two mounting frame assemblies 103, and a connecting rod mounting seat 108 is provided on both mounting frame assemblies 103. The two ends of the mounting frame connecting rod 107 respectively pass through the connecting rod mounting seats 108 on the two mounting frame assemblies 103 and are fastened to the connecting rod mounting seats 108 by fastening nuts 109.

[0035] The two ends of the mounting frame connecting rod pass through the connecting rod mounting seat 108 on the mounting frame assembly 103 and are fastened by the fastening nut 109, and then the distance between the two mounting frame assemblies 103 can be adjusted through the mounting frame connecting rod. On the one hand, it can ensure that the two mounting frame assemblies 103 can be clamped and installed on the pipe mouth of the air inlet pipe 1, and on the other hand, it can also enable the filter cloth mounting frame 101 to be clamped on air inlet pipes 1 of different diameters, so that it can be used more flexibly.

[0036] In addition, the filter cloth 102 is installed through the filter cloth winding rollers 105 on both sides, so that the unused filter cloth 102 can be wound on the filter cloth winding roller 105 on one side. After using it for a period of time, the used filter cloth 102 can be wound on the filter cloth winding roller 105 on the other side according to actual conditions, thereby enabling the filter cloth 102 to be quickly replaced.

[0037] In this embodiment, the winding roller includes a roller body 110 located in the filter cloth winding cavity 104 and a roller end 111 extending out of the filter cloth winding cavity 104. A winding roller limiting mechanism is provided at the roller end 111. The winding roller limiting mechanism includes a rotation limiting ring 112 sleeved on the roller end 111. The rotation limiting ring 112 can move axially along the roller end 111 and form a rotation limit with the roller end 111. A limiting rod 113 axially arranged along the axial direction of the winding roller is provided on the end face of the rotation limiting ring 112 facing the mounting frame assembly 103. A limiting hole 114 is provided on the outer surface of the mounting frame assembly 103. The limiting rod 113 can be inserted into the limiting hole 114 under the action of the limiting ring moving along the axial direction of the winding roller.

[0038] The winding roller limiting mechanism further includes two axial limiting rings 115 threadedly connected to the roller body 110 , and the filter cloth 102 is limited between the two axial limiting rings 115 .

[0039] The winding roller limiting mechanism plays two limiting roles. The first one realizes the rotation limitation of the filter cloth winding roller 105 through the cooperation of the limiting rod 113 and the limiting hole 114. Specifically, a square hole can be provided on the side wall of the circular hole in the middle of the rotation limiting ring 112, and a protrusion that fits into the square hole is provided on the outer wall of the roller end 111. Then, when the rotation limiting ring 112 is limited in the limiting hole 114 by the limiting rod 113 and cannot rotate, the filter cloth winding roller 105 cannot rotate either, thereby maintaining the stable operation of the filter cloth 102 on the filter cloth winding roller 105 in this state.

[0040] When the filter cloth 102 needs to be replaced, the rotation limit ring 112 only needs to be moved axially and away from the limit hole 114, so that the limit rod 113 is released from the limit hole. At this time, the rotation limit ring 112 can be rotated, thereby driving the rotation of the filter cloth winding roller 105, so that the used filter cloth 102 is wound around another filter cloth winding roller 105 from the air inlet pipe 1, and the unused filter cloth 102 is re-covered at the air inlet pipe 1. At the same time, in order to facilitate the rotation of the rotation limit ring 112, a protrusion is provided on the outer surface of the rotation limit ring 112 to increase friction and facilitate the rotation operation.

[0041] The second one is to limit the position of the filter cloth 102 on the winding roller through the axial limiting ring 115, which can ensure that the filter cloth 102 on the winding roller is better wound and can ensure that the filter cloth 102 can enter or extend from the filter cloth extension port 106 more smoothly.

[0042] During use of this embodiment, although the filter cloth 102 is tightened by the winding rollers on both sides and is in a taut state, due to the lack of axial force and the possible unevenness of the end face of the air inlet pipe 1, it is still difficult for the filter cloth 102 to be completely pressed against the end face of the air inlet pipe 1. If a gap is left between the filter cloth 102 and the air inlet pipe 1, it will inevitably affect the pre-filtration effect at this location. Therefore, a filter cloth pressing mechanism is provided in this embodiment.

[0043] Specifically, the mounting frame assembly 103 is also provided with a filter cloth pressing mechanism for pressing the filter cloth 102 against the end face of the air inlet pipe 1. The filter cloth pressing mechanism includes a pressure ring assembly 116 for pressing the filter cloth 102 and a pressure frame 117 for driving the pressure ring assembly 116 to move toward the filter cloth 102. The pressure frame 117 is slidably arranged on the outer surface of the mounting frame assembly 103 and the sliding direction is arranged along the axial direction of the air inlet pipe 1.

[0044] Among them, the pressing frame 117 includes a U-shaped connecting plate 118 and an L-shaped movable plate 119. The two ends of the connecting plate 118 are respectively clamped on the two opposite side surfaces of the mounting frame assembly 103 and can slide linearly on the side surface of the mounting frame along the clamping direction of the filter cloth 102. When specifically set, a sliding groove with a circular arc cross-section and arranged longitudinally can be set on the side surface of the mounting frame, and convex strips with a circular arc cross-section that are clamped in the sliding groove are set at both ends of the connecting plate 118. In this way, the connecting plate 118 can be made to slide up and down on the mounting frame assembly 103, and the connection position of the connecting plate 118 on the mounting frame can be limited to prevent it from falling off from the mounting frame assembly 103.

[0045] Among them, one end of the movable plate 119 is connected to the connecting plate 118, and the other end is provided with a pushing column 120 axially arranged along the pressing direction of the filter cloth 102. The end surface of the pressure ring assembly 116 facing away from the filter cloth 102 is provided with a pushing countersunk hole 121 for inserting the pushing column 120.

[0046] It also includes a compression frame limiting assembly, which includes a buckle 124 hinged to the upper end of the connecting plate 118 and a slot 125 located on the upper end face of the mounting frame assembly 103 for the buckle 124 to be inserted into. When the buckle 124 is inserted into the slot 125, the pressure ring assembly 116 presses the filter cloth 102 against the end face of the air inlet pipe.

[0047] During operation, the entire pressing frame 117 is manually driven to move toward the end of the air inlet pipe 1. During this process, the pushing column 120 on the movable plate 119 is always inserted into the pushing countersunk hole 121 of the pressing ring assembly 116, so that the pressing ring assembly 116 can press the filter cloth 102 at the end of the air inlet pipe 1.

[0048] In this embodiment, taking into account the different sizes of different dustproof booths, they will be equipped with fresh air purification devices with different functions, and different fresh air purification devices will be equipped with air inlet pipes 1 and air outlet pipes 2 with different diameters. Therefore, the structure of the pressure ring assembly 116 is designed so that it can flexibly match air inlet pipes 1 with different diameters.

[0049] Specifically, the pressure ring assembly 116 includes a plurality of circular ring members 122 that are coaxially arranged and can be separated from each other. Adjacent circular ring members 122 are connected internally and externally by threads, and the end faces of the plurality of circular ring members 122 facing the filter cloth 102 can be on the same plane; a limit block 123 is provided on the end face of the inner circular ring member 122 facing away from the filter cloth 102, which can axially limit the end face of the adjacent circular ring member 122 facing away from the filter cloth 102.

[0050] When in use, the corresponding circular ring part 122 can be rotated toward the orifice of the air inlet pipe 1 according to the orifice of the air inlet pipe 1, and the circular ring part 122 that exceeds the outer diameter of the air inlet pipe 1 can be removed, so that the matching circular ring part 122 is at the outermost side and slightly protrudes from the other circular ring parts 122. At this time, it is still connected with the inner circular ring part 122, and then the pressure ring assembly 116 is further pushed through the filter cloth pressing mechanism, so that the outermost circular ring part 122 presses the filter cloth 102 against the end face of the orifice of the air inlet pipe 1, and the inner circular ring part 122 does not exert force on the filter cloth 102, thereby ensuring the stability of the filter cloth 102 in use.

[0051] Furthermore, since the circular rings 122 can be moved to the same plane, when the nozzle thickness is greater than the width of a single circular ring 122, the two circular rings 122 can be moved upward to compress the filter cloth 102, further improving the compression stability. At the same time, handle grooves are provided on the circular rings 122 to facilitate the rotation of the circular rings, and stop blocks 123 are provided to limit and position the multiple stop rings to the same plane. When the inner circular ring 122 rotates until the stop block 123 abuts the end face of the adjacent outer circular ring 122, the other end faces of the inner and outer circular rings 122 are exactly on the same plane.

[0052] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application based on one or several embodiments provided in the present application to obtain other embodiments, and these embodiments do not exceed the scope of protection of the present application.

[0053] In short, the above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the patent of the present invention.

Claims

1. Air intake filter assembly, characterized by: It comprises a filter cloth mounting frame (101) that can be mounted at the pipe opening of the air inlet pipe (1), and a filter cloth (102) that can cover the pipe opening of the air inlet pipe (1) is mounted on the filter cloth mounting frame (101); The filter cloth mounting frame (101) comprises two mounting frame assemblies (103) capable of being clamped at the pipe opening of the air inlet pipe (1), a mounting frame connecting rod (107) for connecting the two mounting frame assemblies (103) is provided between the two mounting frame assemblies (103), a connecting rod mounting seat (108) is provided on each of the two mounting frame assemblies (103), and two ends of the mounting frame connecting rod (107) respectively pass through the connecting rod mounting seats (108) on the two mounting frame assemblies (103) and are fastened to the connecting rod mounting seats (108) by fastening nuts (109); The mounting frame assembly (103) is further provided with a filter cloth pressing mechanism for pressing the filter cloth (102) against the end surface of the air inlet pipe (1), the filter cloth pressing mechanism comprising a pressing ring assembly (116) for pressing the filter cloth (102) and a pressing frame (117) for driving the pressing ring assembly (116) to move toward the filter cloth (102), the pressing frame (117) being slidably arranged on the outer surface of the mounting frame assembly (103) and the sliding direction being arranged along the axial direction of the air inlet pipe (1); The pressure ring assembly (116) comprises a plurality of circular ring members (122) coaxially arranged and separable from each other, wherein adjacent circular ring members (122) are connected internally and externally via threads, and end faces of the plurality of circular ring members (122) facing the filter cloth (102) are located on the same plane; The outermost circular ring (122) can protrude from the inner circular ring (122) and press the filter cloth (102) against the end face of the air inlet pipe (1); A limiting block (123) capable of axially limiting the end surface of an adjacent circular ring member (122) facing away from the filter cloth (102) is provided on the end surface of the inner circular ring member (122) facing away from the filter cloth (102).

2. The air inlet filter assembly according to claim 1, characterized in that: A filter cloth winding chamber (104) is provided in each of the two mounting frame assemblies (103), a filter cloth winding roller (105) is provided in the filter cloth winding chamber (104), and filter cloth extension openings (106) communicating with the filter cloth winding chamber (104) are provided on opposite sides of the two mounting frame assemblies (103). Both ends of the filter cloth (102) extend into the filter cloth winding chamber (104) through the two filter cloth extension openings (106) and are wound on the filter cloth winding roller (105).

3. The air inlet filter assembly according to claim 2, characterized in that: The filter cloth winding roller (105) comprises a roller body (110) located in the filter cloth winding chamber (104) and a roller end (111) extending out of the filter cloth winding chamber (104). A winding roller limiting mechanism is provided at the roller end (111). The winding roller limiting mechanism comprises a rotation limiting ring (112) sleeved on the roller end (111). The rotation limiting ring (112) can move axially along the roller end (111) and forms a rotation limit with the roller end (111). A limiting rod (113) is provided on the end surface of the rotation limiting ring (112) facing the mounting frame assembly (103) and is axially arranged along the axial direction of the filter cloth winding roller (105). A limiting hole (114) is provided on the outer surface of the mounting frame assembly (103). The limiting rod (113) can be inserted into the limiting hole (114) under the action of the rotation limiting ring (112) moving axially along the filter cloth winding roller (105).

4. The air inlet filter assembly according to claim 3, characterized in that: The winding roller limiting mechanism further comprises two axial limiting rings (115) threadedly connected to the roller body (110), and the filter cloth (102) is limited between the two axial limiting rings (115).

5. The air inlet filter assembly according to claim 1, characterized in that: The pressing frame (117) includes a U-shaped connecting plate (118) and an L-shaped movable plate (119), the two ends of the connecting plate (118) are respectively clamped on two opposite side surfaces of the mounting frame assembly (103) and can slide linearly on the side surface of the mounting frame along the pressing direction of the filter cloth (102), one end of the movable plate (119) is connected to the connecting plate (118), and the other end is provided with a pushing column (120) axially arranged along the pressing direction of the filter cloth (102), and a pushing countersunk hole (121) for inserting the pushing column (120) is provided on the end surface of the pressure ring assembly (116) facing away from the filter cloth (102).

6. The air inlet filter assembly according to claim 1, characterized in that: The device further comprises a pressing frame limiting assembly, which comprises a buckle (124) hinged to the upper end of the connecting plate (118) and a slot (125) located on the upper end surface of the mounting frame assembly (103) for the buckle (124) to be inserted into. When the buckle (124) is inserted into the slot (125), the pressure ring assembly (116) presses the filter cloth (102) against the end surface of the air inlet pipe.

7. A mobile GIS installation fresh air system purification device, comprising an air inlet pipe (1), characterized in that: It also includes the air inlet filter assembly according to any one of claims 1 to 6, wherein the air inlet filter assembly is arranged at the mouth of the air inlet pipe (1).

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