Efficient filter of fan filter unit (FFU)

Abstract

The utility model discloses a high-efficiency filter of a fan filter unit (FFU), which belongs to the technical field of FFU filtering equipment and comprises an FFU body, an air suction hood is fixedly mounted at an air inlet of the FFU body, a filter screen is fixedly connected to the middle of the air suction hood, a bearing is fixedly connected to the middle of the filter screen, a rotating shaft is rotatably mounted in the bearing, and the rotating shaft is rotatably mounted in the FFU body. The two ends of the rotating shaft are fixedly connected with a guide pipe and a fan blade respectively, the fan blade drives the rotating shaft to rotate, the rotating shaft drives the guide pipe to rotate, the guide pipe drives the dust shovel and the dust blocking strip to rotate, and when the dust accumulation thickness on the filter screen is larger than that of the dust shovel, the dust shovel shovels dust into the space between the dust shovel and the dust blocking strip, and the dust blocking strip shields airflow. Dust is discharged outwards along a gap between the dust shovel and the dust blocking strip, dust outside the filter screen is conveniently prevented from being too thick, and therefore the air permeability of the filter screen is guaranteed, and efficient filtering of an FFU machine body is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of FFU filtering equipment, and in particular relates to a high-efficiency filter of a fan filter unit FFU. Background Art

[0002] FFU is the professional term in Chinese. Fan filter unit is a ceiling unit with a built-in fan, which is used in turbulent and laminar clean rooms. The overall design of the unit is flexible. According to the design specifications, it can be easily matched with any ceiling frame to achieve cleanliness level 1000 to level 1 requirements.

[0003] Since all particles of different sizes enter the interior of a conventional fan filter unit and then enter external filtration, the internal filtration pressure increases. However, directly adding a primary filter to the outside is easily clogged by dust, resulting in the problem of relatively low overall high-efficiency filtration efficiency and durability of the conventional fan filter unit.

[0004] To this end, we propose a high-efficiency filter for a fan filter unit (FFU) to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the problem of relatively low overall high-efficiency filtration efficiency durability of conventional fan filter units, and proposes a high-efficiency filter of a fan filter unit FFU.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A high-efficiency filter of a fan filter unit (FFU), comprising an FFU body, an air intake hood fixedly installed at the air inlet of the FFU body, a filter screen fixedly connected to the middle of the air intake hood, a bearing fixedly connected to the middle of the filter screen, a rotating shaft rotatably installed inside the bearing, a conduit and a fan blade fixedly connected at both ends of the rotating shaft, an ash shovel and an ash retaining bar fixedly connected to the outside of the conduit, the ash shovel and the ash retaining bar are placed and distributed outside the conduit, the ash shovel and the ash retaining bar are fixedly connected as a whole, and a gap is left between the ash shovel and the filter screen. When gas passes through the filter and enters the FFU body, the airflow drives the fan blades to rotate, and the fan blades drive the shaft to rotate, which drives the duct to rotate, and the ash shovel and ash retaining bar to rotate through the duct. When the dust accumulation thickness on the filter is higher than the ash shovel, the ash shovel is used to shovel the dust between the ash shovel and the ash retaining bar, and the ash retaining bar is used to block the airflow, so that the dust is discharged outward along the gap between the ash shovel and the ash retaining bar, which is convenient to prevent the dust outside the filter from being too thick, thereby ensuring the air permeability of the filter and thus ensuring the efficient filtration of the FFU body.

[0008] Preferably, a mounting seat is installed on the side of the air suction hood, and the mounting seat and the air suction hood can be fixedly mounted on the rear of the FFU body by screws.

[0009] Preferably, the conduit comprises a tube shell and a guide block, wherein a pair of guide blocks are provided and the guide blocks are fixedly connected to the inside of the tube shell. When dust enters the tube shell, the dust enters between the ash shovel and the ash blocking bar by centrifugal force, and the dust is discharged outward. When the ash shovel and the ash blocking bar are blocked, a long strip is directly passed through the conduit, the ash shovel and the ash blocking bar to facilitate manual cleaning of the dust between the ash shovel and the ash blocking bar.

[0010] Preferably, the guide block is provided with an ash guide groove at its corner, and the ash guide groove is used to match the inner space between the ash shovel and the ash blocking strip, so as to facilitate the dust to pass through.

[0011] Preferably, the ash shovel comprises a connecting plate and a plug plate, wherein the connecting plate is fixedly connected to the plug plate as a whole. When the plug plate moves along the outer side of the filter screen and dust covers the plug plate, the dust is shoveled off by the plug plate, so as to facilitate cleaning of excessively thick dust outside the filter screen.

[0012] Preferably, an inclined guide surface is provided on the outside of the plug plate, so that the ash can be shoveled conveniently.

[0013] Preferably, the dust blocking strip comprises a connecting piece and a blocking piece, wherein the connecting piece and the blocking piece are fixedly connected as a whole. The blocking piece is used to block the outside of the plug board to reduce the influence of airflow on internal dust, thereby facilitating the dust to be discharged outward.

[0014] In summary, the technical effects and advantages of the utility model are as follows:

[0015] 1. When the gas passes through the filter and enters the FFU body, the airflow drives the fan blades to rotate, and the fan blades drive the shaft to rotate, which drives the duct to rotate, and the ash shovel and ash retaining bar to rotate through the duct. When the dust accumulation thickness on the filter is higher than the ash shovel, the ash shovel is used to shovel the dust between the ash shovel and the ash retaining bar, and the ash retaining bar is used to block the airflow, so that the dust is discharged outward along the gap between the ash shovel and the ash retaining bar, which is convenient to prevent the dust outside the filter from being too thick, thereby ensuring the air permeability of the filter and thus ensuring the efficient filtration of the FFU body.

[0016] 2. When dust enters the tube shell, with the help of centrifugal force, the dust enters between the ash shovel and the ash retaining bar, and the dust is discharged outward. When the ash shovel and the ash retaining bar are blocked, a long strip is used to directly pass through the conduit, ash shovel, and ash retaining bar to facilitate manual cleaning of the dust between the ash shovel and the ash retaining bar.

[0017] 3. When the plug plate moves along the outside of the filter and the dust covers the plug plate, shovel the dust off through the plug plate to facilitate cleaning of the excessively thick dust outside the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the catheter structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the ash shovel of the utility model;

[0021] Figure 4 The utility model is a schematic diagram of the dust retaining strip structure.

[0022] In the figure: 1, FFU body; 2, duct; 3, ash shovel; 4, ash blocking strip; 5, suction hood; 6, filter screen; 7, bearing; 8, fan blade; 9, mounting seat; 21, tube shell; 22, guide block; 23, ash guide groove; 31, connecting plate; 32, plug plate; 33, inclined guide surface; 41, connecting plate; 42, blocking plate. DETAILED DESCRIPTION

[0023] The technical solutions in the utility model embodiments will be described clearly and completely below in conjunction with the drawings in the utility model embodiments. Obviously, the described embodiments are only part of the utility model embodiments, rather than all of the embodiments.

[0024] Reference Figure 1 A high-efficiency filter of a fan filter unit FFU comprises an FFU body 1, an air intake hood 5 is fixedly installed at the air inlet of the FFU body 1, a filter screen 6 is fixedly connected to the middle of the air intake hood 5, a bearing 7 is fixedly connected to the middle of the filter screen 6, a rotating shaft is rotatably installed inside the bearing 7, a conduit 2 and a fan blade 8 are fixedly connected to both ends of the rotating shaft, an ash shovel 3 and an ash retaining bar 4 are fixedly connected to the outside of the conduit 2, the ash shovel 3 and the ash retaining bar 4 are placed and distributed outside the conduit 2, the ash shovel 3 and the ash retaining bar 4 are fixedly connected as a whole, and a gap is left between the ash shovel 3 and the filter screen 6.

[0025] Reference Figure 1 A mounting seat 9 is installed on the side of the air suction cover 5. The screws are passed through the mounting seat 9 and installed on the FFU body 1.

[0026] Reference Figure 1 and 2 The conduit 2 includes a tube shell 21 and a guide block 22. The tube shell 21 is fixedly connected to the rotating shaft. A pair of guide blocks 22 are provided and fixedly connected to the inside of the tube shell 21. When dust enters the tube shell 21, the dust enters between the ash shovel 3 and the ash blocking bar 4 by centrifugal force, and the dust is discharged outward. When the ash shovel 3 and the ash blocking bar 4 are blocked, a long strip can be directly passed through the conduit 2, the ash shovel 3 and the ash blocking bar 4 to clean it.

[0027] Reference Figure 1 and2 The corners of the guide block 22 are provided with ash guide grooves 23. The ash guide grooves 23 are used to match the internal space between the ash shovel 3 and the ash blocking strip 4.

[0028] Reference Figure 1 , 2 3, the dust shovel 3 includes a connecting plate 31 and a plugging plate 32, the plugging plate 32 and the connecting plate 31 are fixedly connected to the tube shell 21, and the connecting plate 31 and the plugging plate 32 are fixedly connected as a whole. When the plugging plate 32 moves along the outer side of the filter screen 6, and the dust submerges the plugging plate 32, the dust is shoveled off by the plugging plate 32.

[0029] Reference Figure 1 and 3 The outside of the inserting plate 32 is provided with an inclined guide surface 33. The inclined guide surface 33 is used to guide dust to enter between the ash shovel 3 and the ash blocking strip 4.

[0030] Reference Figure 1 , 3 4, the dust blocking strip 4 includes a connecting piece 41 and a blocking piece 42, the connecting piece 41 is fixedly connected to the connecting plate 31, the blocking piece 42 blocks the outside of the plug board 32, and the connecting piece 41 and the blocking piece 42 are fixedly connected as a whole. The blocking piece 42 blocks the outside of the plug board 32 to reduce the influence of airflow on internal dust.

[0031] Working principle: when gas passes through the filter 6 and enters the FFU body 1, the airflow is used to drive the fan blades 8 to rotate, and the fan blades 8 drive the rotating shaft to rotate, so that the rotating shaft drives the conduit 2 to rotate, and the conduit 2 drives the ash shovel 3 and the ash blocking bar 4 to rotate. When the dust accumulation thickness on the filter 6 is higher than the ash shovel 3, the ash shovel 3 is used to shovel the dust between the ash shovel 3 and the ash blocking bar 4, and the ash blocking bar 4 is used to block the airflow, so that the dust is discharged outward along the gap between the ash shovel 3 and the ash blocking bar 4, which is convenient to prevent the dust outside the filter 6 from being too thick, thereby ensuring the air permeability of the filter 6, thereby ensuring the efficient filtration of the FFU body 1.

[0032] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to it. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the utility model according to the technical scheme and utility model concept of the utility model, which should be covered by the protection scope of the utility model.

[0033] The description briefly mentions the application direction of the utility model for the prior art that is known to those skilled in the art and has not been changed, and combines it with the utility model to form a complete technology; the description avoids over-popularizing the technology familiar to those skilled in the art, and is used to assist those skilled in the art to quickly understand the main content of the utility model.

Claims

1. A high efficiency filter of a fan filter unit (FFU), comprising an FFU body (1), characterized in that: An air intake hood (5) is fixedly installed at the air inlet of the FFU body (1), a filter screen (6) is fixedly connected to the middle of the air intake hood (5), a bearing (7) is fixedly connected to the middle of the filter screen (6), a rotating shaft is rotatably installed inside the bearing (7), and the two ends of the rotating shaft are respectively fixedly connected to a duct (2) and a fan blade (8), and an ash shovel (3) and an ash retaining strip (4) are fixedly connected to the outside of the duct (2), and the ash shovel (3) and the ash retaining strip (4) are placed and distributed outside the duct (2), and the ash shovel (3) and the ash retaining strip (4) are fixedly connected as a whole, and a gap is left between the ash shovel (3) and the filter screen (6).

2. A high efficiency filter for a fan filter unit (FFU) according to claim 1, characterized in that: A mounting seat (9) is mounted on the side of the suction hood (5).

3. The high efficiency filter of a fan filter unit (FFU) according to claim 1, characterized in that: The guide tube (2) comprises a tube shell (21) and a guide block (22). A pair of the guide blocks (22) are provided, and the guide blocks (22) are fixedly connected inside the tube shell (21).

4. The high efficiency filter of a fan filter unit (FFU) according to claim 3, characterized in that: Ash guide grooves (23) are provided at the corners of the guide block (22).

5. The high efficiency filter of a fan filter unit (FFU) according to claim 1, characterized in that: The ash shovel (3) comprises a connecting plate (31) and an inserting plate (32), and the connecting plate (31) and the inserting plate (32) are fixedly connected to form a whole.

6. A high efficiency filter for a fan filter unit (FFU) according to claim 5, characterized in that: The inserting plate (32) is provided with an inclined guide surface (33) on the outside.

7. The high efficiency filter of a fan filter unit (FFU) according to claim 1, characterized in that: The dust blocking strip (4) comprises a connecting piece (41) and a blocking piece (42), and the connecting piece (41) and the blocking piece (42) are fixedly connected to form a whole.

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