High-grade protection sealing structure for FFU

Abstract

The utility model relates to the technical field of fan filter units, in particular to a high-grade protection sealing structure for an FFU (fan filter unit). The direct current fan is arranged in the equipment main shell, the air guide ring is installed at an air inlet of the direct current fan and arranged on the outer side of the equipment main shell, the filtering assembly is arranged in the equipment main shell and the equipment main shell and arranged at an air outlet of the direct current fan, and sealing structures are arranged on the two sides of the filtering assembly. The filter mounting blocks are fixedly connected with the filter fixing frames on the two sides through matched connection of rivet nuts and bolts. The air filter has the advantages that the sealing materials are installed on the inner side and the outer side between the filter fixing frame and the filter installation block, so that outside air is prevented from directly entering the air filter without being filtered, the cleanliness of the entering air is guaranteed, and the unit efficiency of a fan is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of fan filter units, and in particular to a high-level protective sealing structure for FFUs. Background Technology

[0002] FFU stands for Fan Filter Unit, which is mainly used in cleanrooms and other clean environments. It uses a fan to drive air through a high-efficiency filter to maintain air cleanliness. The innovative aspects of the patent application include material selection (such as specially treated steel plates, explosion-proof paint, and aluminum alloys), sealing design, modular structure, and explosion-proof electrical components.

[0003] The existing technology, CN2020201331144, explosion-proof FFU air supply device, has the following defects in terms of explosion-proofness, corrosion resistance and sealing: the explosion-proof performance of the materials is insufficient and they are susceptible to chemical corrosion; the sealing structure is prone to leakage due to vibration, which affects the cleanliness; maintenance is complicated and disassembly and assembly efficiency is low.

[0004] Therefore, a high-level protective sealing structure for FFU needs to be designed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a high-level protective sealing structure for FFUs to overcome the aforementioned shortcomings of the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A high-level protective sealing structure for an FFU (Fan Filter Unit) includes a main housing, a DC fan disposed within the main housing, an air guide ring installed at the air inlet of the DC fan and located outside the main housing, and a filter assembly disposed within the main housing and located at the air outlet of the DC fan. Filter fixing frames are respectively provided on both sides within the main housing. The filter assembly is characterized by having sealing structures on both sides. The filter assembly includes a filter and filter mounting blocks disposed on both sides of the filter. The filter mounting blocks are fixedly connected to the filter fixing frames on both sides by rivets and bolts. A sealing gasket is provided between the filter mounting blocks and the filter fixing frames. A housing fixing flange protrudes outward from the air inlet of the filter mounting blocks. An air inlet sealing strip is provided on one side of the inner wall of the housing fixing flange, and the air inlet sealing strip is higher than the housing fixing flange.

[0008] Preferably, the filter fixing frame has mounting holes for fixed installation.

[0009] Preferably, a primary filter cotton is also provided at the inlet of the filter.

[0010] Preferably, the main housing of the equipment is made of steel plates and coated with an explosion-proof paint.

[0011] Preferably, the surface of the main housing of the equipment is coated with a layer of explosion-proof paint.

[0012] Preferably, the filter mounting block has mounting holes.

[0013] The beneficial effects of this utility model are: by installing sealing materials on both the inner and outer sides between the filter fixing frame and the filter mounting block, this technical solution prevents unfiltered outside air from directly entering the interior, thereby ensuring the cleanliness of the incoming air, guaranteeing the unit efficiency of the fan, and adopting a modular design, which is convenient for disassembly and maintenance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a high-level protective sealing structure for an FFU according to the present invention;

[0015] Figure 2 This is a partially enlarged view of a high-level protective sealing structure for an FFU according to this utility model;

[0016] Figure 3 This is an enlarged view of the air inlet of a high-level protective sealing structure for an FFU (Fan Filter Unit) according to this utility model.

[0017] In the diagram: 1. Main housing of the equipment; 2. DC fan; 3. Air guide ring; 4. Filter assembly; 5. Filter fixing frame; 41. Filter; 42. Filter mounting block; 43. Rivet nut; 44. Bolt; 45. Sealing gasket; 11. Housing fixing flange; 6. Air inlet sealing strip. Detailed Implementation

[0018] Reference Figures 1 to 3 A high-level protective sealing structure for FFU includes a main housing 1, a DC fan 2 disposed in the main housing, an air guide ring 3 installed at the air inlet of the DC fan and located outside the main housing, and a filter assembly 4 disposed in the main housing and located at the air outlet of the DC fan.

[0019] To ensure that the airflow entering the main body of the equipment from the DC fan is filtered by the filter assembly before being transmitted, a sealing structure is provided on both sides of the filter assembly. The sealing structure seals the four sides and sides of the filter assembly to ensure that the gas does not flow out from the gaps and that the gas is transmitted after passing through the filter assembly, thereby ensuring a dust-free environment inside.

[0020] To facilitate the installation of the filter assembly inside the main housing of the device, filter fixing frames 5 are provided on both sides, and mounting holes for fixing are provided on the filter fixing frames.

[0021] The filter assembly includes a filter 41 and filter mounting blocks 42 disposed on both sides of the filter. To facilitate the fixing of the filter, the filter mounting blocks are provided with mounting holes. The filter mounting blocks are fixedly connected to the filter fixing frames on both sides by the cooperation of rivet nuts 43 and bolts 44. In order to prevent gas from flowing out from the gap, a sealing gasket 45 is provided between the filter mounting blocks and the filter fixing frames. The sealing gasket blocks the gap between the two, thereby preventing gas from flowing out from the gap.

[0022] In specific implementation examples, sealing gaskets, sealing strips, and sealant are used to seal both the inner and outer sides of the filter mounting frame and filter mounting block, thus achieving a sealed installation. This ensures that any gas entering the unit flows through the installation gap, improving the stability and safety of the FFU in a chemical environment. Using sealing gaskets reduces vibration, making the unit more stable and providing a sealing effect.

[0023] To improve the filtration effect, a primary filter cotton is installed at the inlet of the filter. The primary filter cotton forms the first threshold for air filtration and works with the filter to increase the filtration effect. The gas first passes through the primary filter cotton for preliminary filtration and then passes through the filter for advanced filtration, thereby ensuring the cleanliness of the gas and ensuring that the air entering the room meets the standards and meets the requirements of the indoor environment.

[0024] A housing fixing flange 11 is provided on the outwardly flanged edge of the air inlet of the filter mounting block. The housing fixing flange is used to fix the filter in place, thereby improving the overall stability of the filter. In order to ensure the sealing around the housing fixing flange, an air inlet sealing strip 6 is provided on one side of the inner wall of the housing fixing flange. The air inlet sealing strip is higher than the housing fixing flange, so that the protruding air inlet sealing strip will not be squeezed. This effectively ensures that this part of the air inlet sealing strip is effectively controlled and will not be compressed or deformed, thereby ensuring the overall sealing effect and improving the sealing performance.

[0025] To enhance safety, the main housing of the equipment is constructed from steel plates coated with an explosion-proof paint. The steel plates are made of corrosion-resistant and high-temperature-resistant materials, thereby improving the equipment's explosion-proof performance and aesthetics. Aluminum alloy can also be used as a material for FFU explosion-proof technology due to its lightweight nature and good corrosion resistance.

[0026] The advantages of this utility model are that by installing sealing materials on both the inner and outer sides between the filter fixing frame and the filter mounting block, the outside air is prevented from entering the interior directly without being filtered, thereby ensuring the cleanliness of the incoming air and guaranteeing the unit efficiency of the fan. In addition, the modular design facilitates disassembly and maintenance.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-level protective sealing structure for an FFU, comprising a main housing, a DC fan disposed within the main housing, an air guide ring installed at the air inlet of the DC fan and located outside the main housing, and a filter assembly disposed within the main housing and located at the air outlet of the DC fan, wherein filter fixing frames are respectively provided on both sides within the main housing, characterized in that: The filter assembly is provided with sealing structures on both sides, comprising a filter, filter mounting blocks arranged on both sides of the filter, the filter mounting blocks are fixedly connected with filter fixed frames on both sides through the cooperation of rivet nuts and bolts, sealing pads are arranged between the filter mounting blocks and the filter fixed frames, a box fixed flange is arranged on the outward flange of the air inlet of the filter mounting block, an air inlet sealing strip is arranged on the inner wall of the box fixed flange, and the air inlet sealing strip is higher than the box fixed flange.

2. A high containment seal for an FFU according to claim 1, wherein: Mounting holes are formed on the filter fixed frames.

3. A high containment seal for an FFU according to claim 1, wherein: Primary filter cotton is further arranged at the inlet of the filter.

4. A high containment seal for an FFU according to claim 1, wherein: The equipment main shell is composed of steel plates.

5. A high containment seal for an FFU according to claim 1, wherein: An explosion-proof baking varnish is coated on the surface of the equipment main shell.

6. A high containment seal for an FFU according to claim 1, wherein: Mounting holes are formed on the filter mounting blocks.

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