Primary filter for ventilation system

Abstract

The utility model relates to the field of air purification, in particular to a primary filter for a ventilation system. According to the primary filter for the ventilation system, a gap between a ventilation pipeline and the primary filter can be sealed, dust is prevented from entering the ventilation pipeline through the gap, and the filtering effect is improved. A primary filter for a ventilation system comprises a primary filter body, an outer frame, a connecting frame and the like, the outer frame is connected to the outer side of the primary filter body, and the connecting frame is connected to the outer frame. According to the sealing device, the threaded rod is rotated to drive the wedge-shaped plate to move downwards, the wedge-shaped plate moves downwards to extrude the sealing block, the sealing block is driven to move outwards, the telescopic rod extends, the sealing block makes contact with the four sides of the interior of the ventilation pipeline, and the purpose that a gap between the ventilation pipeline and a primary filter can be sealed is achieved; and dust is prevented from entering the ventilation pipeline through the gaps.

Description

Technical Field

[0001] This utility model relates to the field of air purification, and in particular to a primary filter for ventilation systems. Background Technology

[0002] As the primary filtration component in a ventilation system, the pre-filter plays a crucial role in intercepting large particles of dust, hair, fibers, and other impurities. It is essential for protecting subsequent medium-efficiency and high-efficiency filters, extending the lifespan of the entire ventilation system, and maintaining indoor air cleanliness.

[0003] Existing pre-filters are usually installed at the vent of the ventilation duct with screws. During ventilation, the pre-filter filters the air. However, because it is difficult to achieve a completely seamless connection during the installation of the pre-filter, there are often gaps between them. When the ventilation system is running, the airflow inside the duct will cause dust particles to gain additional kinetic energy and enter the ventilation duct, which will gradually reduce the ventilation efficiency of the ventilation duct.

[0004] Therefore, it is necessary to design a pre-filter for ventilation systems that can seal the gap between the ventilation duct and the pre-filter to prevent dust from entering the ventilation duct through the gap. Utility Model Content

[0005] To overcome the shortcomings of existing pre-filters, which are difficult to install seamlessly and often have gaps, this invention provides a pre-filter for ventilation systems that can seal the gap between the ventilation duct and the pre-filter, preventing dust from entering the ventilation duct through the gap and improving the filtration effect.

[0006] The technical solution is as follows: A primary filter for a ventilation system includes a primary filter, an outer frame, a connecting frame, a mounting frame, a quick-release mechanism, and a sealing mechanism. The outer frame is connected to the outside of the primary filter, and the connecting frame is connected to the outer frame. The mounting frame is sleeved on the outside of the connecting frame. The mounting frame is provided with a quick-release mechanism that allows for easy disassembly and replacement of the primary filter. The connecting frame is provided with a sealing mechanism that seals the gap between the ventilation duct and the primary filter.

[0007] As a preferred option, the mounting bracket has two mounting holes on each of its four sides (front, back, left, and right).

[0008] Preferably, the quick-release mechanism includes a fixed frame, a sliding locking rod, a first telescopic spring, and a locking seat. Two fixed frames are connected to the upper sides of the front, rear, left, and right sides of the mounting frame. Each fixed frame is rotatably equipped with a rotating block, and each rotating block is slidably connected with a sliding locking rod. Each sliding locking rod is connected to the adjacent rotating block with a first telescopic spring. Two locking seats are connected to the upper sides of the front, rear, left, and right sides of the connecting frame, and each sliding locking rod is engaged with the adjacent locking seat.

[0009] Preferably, it also includes gripping rings, with gripping rings connected to the outer side of the sliding locking rod.

[0010] Preferably, a sealing mechanism is also included, comprising a wedge plate, a screw, a sealing block, a telescopic rod, and a second telescopic spring. The connecting frame is slidably connected to the wedge plate on all four sides (front, back, left, and right). The upper side of the middle of each wedge plate is rotatably connected to a screw, which is threadedly connected to the connecting frame. Multiple telescopic rods are connected to the four sides (front, back, left, and right) of the outer frame. Sealing blocks are connected between the telescopic ends of the telescopic rods on the same side. A second telescopic spring is connected between the fixed end of each telescopic rod and the adjacent sealing block.

[0011] Preferably, the sealing blocks are all wedge-shaped structures.

[0012] The beneficial effects of this utility model are: 1. By rotating the screw, the wedge plate moves downward, and the downward movement of the wedge plate squeezes the sealing block, causing the sealing block to move outward, so that the telescopic rod extends and the sealing block contacts the four sides of the inside of the ventilation duct, thereby achieving the effect of sealing the gap between the ventilation duct and the primary filter, and preventing dust from entering the ventilation duct through the gap.

[0013] 2. This utility model achieves the effect of convenient disassembly and replacement of the primary filter by moving the sliding locking rod inward, rotating the sliding locking rod, and then releasing the sliding locking rod, causing the sliding locking rod to move outward, so that the sliding locking rod disengages from the locking seat, and then removing the connecting bracket to replace the primary filter. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the outer frame and connecting frame of this utility model.

[0016] Figure 3 This is a three-dimensional structural diagram of the quick-release mechanism of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the sealing mechanism of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1_Primary filter, 2_Outer frame, 3_Connecting bracket, 4_Mounting bracket, 5_Mounting hole, 6_Quick release mechanism, 61_Fixed bracket, 62_Sliding locking rod, 63_First telescopic spring, 64_Grip ring, 65_Locking seat, 7_Sealing mechanism, 71_Wedge plate, 72_Screw, 73_Sealing block, 74_Telescopic rod, 75_Second telescopic spring. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] A pre-filter for a ventilation system, such as Figure 1 and Figure 2 As shown, it includes a pre-filter 1, an outer frame 2, a connecting bracket 3, a mounting bracket 4, a quick-release mechanism 6, and a sealing mechanism 7. The outer frame 2 is connected to the outside of the pre-filter 1, the connecting bracket 3 is connected to the outer frame 2, and the mounting bracket 4 is sleeved on the outside of the connecting bracket 3. The mounting bracket 4 has two mounting holes 5 on each of its four sides (front, back, left, and right) for easy installation. The mounting bracket 4 is equipped with a quick-release mechanism 6, and the connecting bracket 3 is equipped with a sealing mechanism 7.

[0021] like Figure 1 and Figure 3 As shown, the quick-release mechanism 6 includes a fixed frame 61, a sliding locking rod 62, a first telescopic spring 63, a gripping ring 64, and a locking seat 65. The mounting frame 4 has two fixed frames 61 connected to the upper sides of its four front, rear, left, and right sides. Each fixed frame 61 has a rotating block rotatably mounted on it. Each rotating block has a sliding locking rod 62 slidably connected to it. Each sliding locking rod 62 is connected to the adjacent rotating block by a first telescopic spring 63. Each sliding locking rod 62 has a gripping ring 64 connected to its outer side. The connecting frame 3 has two locking seats 65 connected to the upper sides of its four front, rear, left, and right sides. Each sliding locking rod 62 engages with the adjacent locking seat 65.

[0022] like Figure 1 , Figure 2 and Figure 4 As shown, it also includes a sealing mechanism 7, which includes a wedge plate 71, a screw 72, a sealing block 73, a telescopic rod 74, and a second telescopic spring 75. The connecting frame 3 is slidably connected to the wedge plate 71 on all four sides. The upper side of the middle of the wedge plate 71 is rotatably connected to the screw 72. The screw 72 is threadedly connected to the connecting frame 3. The outer frame 2 is connected to four telescopic rods 74 on all four sides. The telescopic ends of the telescopic rods 74 on the same side are connected to the sealing blocks 73. The sealing blocks 73 are all wedge-shaped structures. The fixed ends of the telescopic rods 74 are connected to the adjacent sealing blocks 73 with the second telescopic spring 75.

[0023] When using this device, first install the mounting bracket 4 to the ventilation duct opening through the mounting hole 5 and screws. Then rotate the screw 72, causing the screw 72 to move downward along the connecting bracket 3 under the action of the thread, which drives the wedge plate 71 to move downward. The downward movement of the wedge plate 71 squeezes the sealing block 73, causing the sealing block 73 to move outward, which extends the telescopic rod 74 and stretches the second telescopic spring 75, so that the sealing block 73 contacts the four sides of the inside of the ventilation duct, thereby sealing the gap between the ventilation duct and the primary filter 1, preventing dust from entering the ventilation duct through the gap. Subsequently, during the ventilation process, the dust is filtered by the primary filter 1 on the outer frame 2.

[0024] When using the quick-release mechanism 6 of this device, the primary filter 1 can be easily disassembled. When the primary filter 1 needs to be disassembled and replaced, hold the gripping ring 64 and move the sliding locking rod 62 inward. The first telescopic spring 63 is compressed and contracted. Then, rotate the sliding locking rod 62, causing the rotating block to rotate. Then, release the sliding locking rod 62, and the first telescopic spring 63 returns to its original state, causing the sliding locking rod 62 to move outward. This allows the slider on the sliding locking rod 62 to move outward along the groove on the locking seat 65, causing the sliding locking rod 62 to disengage from the locking seat 65. Then, remove the connecting bracket 3 and replace the primary filter 1. This makes it easy to disassemble and replace the primary filter 1, and is convenient to use.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that variations may be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A preliminary filter for a ventilation system, characterized in that It includes a primary filter (1), an outer frame (2), a connecting bracket (3), a mounting bracket (4), a quick-release mechanism (6), and a sealing mechanism (7). The primary filter (1) is connected to the outer frame (2), the outer frame (2) is connected to the connecting bracket (3), the connecting bracket (3) is sleeved on the outer side of the connecting bracket (3), the mounting bracket (4) is provided on the mounting bracket (4) to facilitate the disassembly and replacement of the primary filter (1), and the connecting bracket (3) is provided with a sealing mechanism (7) to seal the gap between the ventilation duct and the primary filter (1).

2. A preliminary filter for ventilation systems according to claim 1, characterized in that The mounting bracket (4) has two mounting holes (5) on each of the four sides: front, back, left, and right.

3. A preliminary filter for ventilation systems according to claim 1, characterized in that, The quick-release mechanism (6) includes a fixed frame (61), a sliding locking rod (62), a first telescopic spring (63), and a locking seat (65). The mounting frame (4) has two fixed frames (61) connected to the upper sides of the front, back, left, and right sides. Each fixed frame (61) has a rotating block, and each rotating block has a sliding locking rod (62) connected to it. Each sliding locking rod (62) is connected to the adjacent rotating block with a first telescopic spring (63). The connecting frame (3) has two locking seats (65) connected to the upper sides of the front, back, left, and right sides. Each sliding locking rod (62) is engaged with the adjacent locking seat (65).

4. A preliminary filter for ventilation systems according to claim 3, characterized in that It also includes a gripping ring (64), and the outer side of the sliding locking rod (62) is connected to the gripping ring (64).

5. A preliminary filter for ventilation systems according to claim 1, characterized in that, It also includes a sealing mechanism (7), which includes a wedge plate (71), a screw (72), a sealing block (73), a telescopic rod (74), and a second telescopic spring (75). The connecting frame (3) is slidably connected to the wedge plate (71) on all four sides. The upper side of the middle part of the wedge plate (71) is rotatably connected to the screw (72). The screw (72) is threadedly connected to the connecting frame (3). The outer frame (2) is connected to multiple telescopic rods (74) on all four sides. The telescopic rods (74) on the same side are connected to the telescopic ends of the telescopic rods (74) with sealing blocks (73). The fixed ends of the telescopic rods (74) are connected to the adjacent sealing blocks (73) with a second telescopic spring (75).

6. A preliminary filter for ventilation systems according to claim 5, characterized in that All sealing blocks (73) are wedge-shaped structures.

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