A pre-filter

Abstract

A pre-filter includes a rectangular frame with multiple openings at its lower end. Surrounding plates are formed on both sides of the rectangular frame opening. Fixed portions are located on the air inlet and outlet sides of the rectangular frame. Multiple vertically arranged filter sections are located inside the rectangular frame, mounted on the fixed portions. The filter sections used in this invention consist of multiple roughly Z-shaped components that block the movement of airborne sand particles. When sand particles enter with the air, the filter section reduces their speed, thus eliminating their momentum and energy to continue moving forward, causing them to fall off naturally. Furthermore, the Z-shaped components are connected by snap-fit ​​connections, facilitating the replacement of parts in case of deformation.

Description

Technical Field

[0001] This utility model relates to the field of air filtration technology, and in particular to a pre-filter. Background Technology

[0002] Gas turbines and other equipment used in desert regions require air purification during intake because the air contains a large amount of sand particles, which can affect the operation of the gas turbine. Therefore, air purification has become an important research topic. Currently, common filtration methods include membrane filtration, which improves filtration efficiency but requires frequent maintenance and has high operating costs; honeycomb filtration, which is prone to clogging by sand particles; and pre-filters with folded components and post-filters with oil baths, which overcome the above problems. However, the pre-filter components are usually connected by welding, and during air intake, sand particles can impact these components, causing dents or even deformation, which affects filtration efficiency. Furthermore, the welding method makes component replacement inconvenient. Utility Model Content

[0003] This utility model provides a pre-effect filter to overcome the shortcomings of the prior art and solve the problems existing in the current pre-effect filter, and has strong practicality.

[0004] In order to achieve the purpose of this utility model, the following technology is proposed to be adopted: A pre-filter includes a rectangular frame with multiple holes at the lower end of the frame, and side panels formed on both sides of the opening of the rectangular frame. The rectangular frame has a fixing part on the air inlet and outlet sides respectively, and the interior of the rectangular frame has multiple vertically arranged filter parts, which are located on the fixing parts.

[0005] Furthermore, the filter sections are arranged at equal intervals along the width direction of the rectangular frame.

[0006] Furthermore, the fixing part includes a pair of inner vertical plates welded to the inner wall of the rectangular frame. The inner vertical plates are arranged vertically, and multiple fixing strips are welded between the inner vertical plates.

[0007] Furthermore, the fixing strip includes an inclined plate that is set at an angle, with the outer end of the inclined plate extending upward at an angle, and the outer end of the inclined plate having an end arc plate that is bent downward at an angle.

[0008] Furthermore, the filter section includes a central vertical plate, with arc-shaped plates bent inward at both ends of the central vertical plate, an outer arc plate provided outside each arc plate, an end vertical plate formed on the outer arc plate, and an arc-shaped baffle formed on the end vertical plate bent inward, with the width directions of the end vertical plates being parallel to each other.

[0009] Furthermore, multiple slots are evenly spaced along the vertical direction on the baffle, and the inner end of the inclined plate is inserted into the slot.

[0010] Furthermore, the outer arc plate has multiple rectangular holes, and the arc plate has forming holes. The upper end of the forming holes is bent with an L-shaped buckle, which passes through the rectangular holes and is secured to the outer arc plate.

[0011] The advantages of the above technical solution are: The filter section of this utility model consists of multiple roughly Z-shaped components that block the movement of sand particles carried in the air. When sand particles enter with the air, the filter section reduces their movement speed, thus eliminating their power and energy to continue moving forward, causing them to fall off naturally. Furthermore, the Z-shaped components are connected by snap-fit ​​connections, which facilitates the replacement of some components if deformation occurs.

[0012] Secondly, when the filter part is fixed by the fixing part, the inclined plate with the inclined design is used to block sand particles. The formed end arc plate strengthens the inclined plate to prevent deformation. At the same time, when the inclined plate and the Z-shaped structure components are connected, they are connected by a bayonet, which has the advantage of easy connection. Attached Figure Description

[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will provide a further detailed description of this utility model in conjunction with the accompanying drawings.

[0014] Figure 1 A three-dimensional structural diagram of one embodiment is shown.

[0015] Figure 2 A three-dimensional structural diagram of the fixing part is shown.

[0016] Figure 3 A three-dimensional structural diagram of the filter section is shown. Detailed Implementation

[0017] like Figures 1-3As shown, a pre-filter includes a rectangular frame 1 with multiple holes 11 at its lower end. A surrounding plate 10 is formed on both sides of the opening of the rectangular frame 1. A fixing part 2 is provided on the air inlet and outlet sides of the rectangular frame 1. Multiple vertically arranged filter parts 3 are provided inside the rectangular frame 1, mounted on the fixing parts 2, and are evenly spaced along the width direction of the rectangular frame 1.

[0018] The fixing part 2 includes a pair of inner vertical plates 22 welded to the inner wall of the rectangular frame 1. The inner vertical plates 22 are arranged vertically, and multiple fixing strips are welded between the inner vertical plates 22. The fixing strips include inclined plates 20 arranged at an angle. The outer end of the inclined plate 20 extends upward at an angle, and the outer end of the inclined plate 20 is bent into an end arc plate 21, which is bent downward.

[0019] The filter section 3 includes a central vertical plate 30. Both ends of the central vertical plate 30 are bent inwards to form arc-shaped plates 300. Each arc-shaped plate 300 has an outer arc-shaped plate 322. An end vertical plate 32 is formed on the outer arc-shaped plate 322. An arc-shaped baffle 320 is formed by bending inwards on the end vertical plate 32. The width directions of the end vertical plates 32 are parallel to each other. Multiple slots 321 are evenly spaced along the vertical direction on the baffle 320. The inner end of the inclined plate 20 is inserted into the slot 321. Multiple rectangular holes 313 are formed on the outer arc-shaped plate 322. A forming hole 301 is formed on the arc-shaped plate 300. An L-shaped buckle 302 is bent at the upper end of the forming hole 301. The buckle 302 passes through the rectangular hole 313 and is engaged with the outer arc-shaped plate 322.

[0020] In this embodiment, when connecting the filter section, it should be done as follows: Figure 3 The connection method shown is as follows: the two end vertical plates 32 are respectively connected to the two ends of the middle vertical plate 30. During connection, first align the buckle 302 with the rectangular hole 313, then move the end vertical plates 32 downwards, and after connection, each filter unit forms a Z-shaped structure. During filtration, air passes between two adjacent filter units. When the air passes through, the sand particles in it will collide with the middle vertical plate 30 and the end vertical plates 32, thereby consuming the energy of the horizontal movement of the sand particles and causing them to move downwards. In addition, when the air passes through the arc plate 300, the air will form a vortex at this point, which will facilitate the downward discharge of sand particles.

[0021] In this embodiment, when connecting the fixing part 2 and the filter part 3, the assembled filter parts 3 are fixed in an array onto one of the fixing parts 2. During fixing, the inclined plate 20 is inserted into the bayonet 321, and then the rectangular frame 1 is fixed to the inner vertical plate 22 by screws. When air passes through the inclined plate 20, the inclined surface blocks larger sand particles, preventing some sand particles from entering the filter part. At the same time, the air that enters has a tendency to flow downwards at an angle, which facilitates the discharge of sand particles from the holes 11.

[0022] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations of this utility model fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A pre-filter, characterized in that, Includes a rectangular frame (1), with multiple holes (11) at the bottom of the rectangular frame (1), and side panels (10) formed on both sides of the opening of the rectangular frame (1). The rectangular frame (1) has a fixing part (2) on the air inlet and outlet sides respectively, and the rectangular frame (1) has multiple vertically arranged filter parts (3) inside, which are located on the fixing part (2). The fixing part (2) includes a pair of inner vertical plates (22) welded to the inner wall of the rectangular frame (1). The inner vertical plates (22) are arranged vertically, and multiple fixing strips are welded between the inner vertical plates (22). The fixing strip includes an inclined plate (20) that is set at an angle, the outer end of the inclined plate (20) extends upward at an angle, and the outer end of the inclined plate (20) is bent with an end arc plate (21), the end arc plate (21) is bent downward; The filter section (3) includes a central vertical plate (30), with arc-shaped plates (300) bent inward at both ends of the central vertical plate (30). Each arc-shaped plate (300) is provided with an outer arc plate (322), and an end vertical plate (32) is formed on the outer arc plate (322). The end vertical plate (32) is bent inward to form a baffle (320) with an arc structure. The width directions of the end vertical plates (32) are parallel to each other. Multiple slots (321) are provided on the baffle (320) in an equally spaced array along the vertical direction, and the inner end of the inclined plate (20) is inserted into the slot (321); The outer arc plate (322) has multiple rectangular holes (313), and the arc plate (300) has a forming hole (301). The upper end of the forming hole (301) is bent with a buckle (302) in an L-shape. The buckle (302) passes through the rectangular hole (313) and is fastened to the outer arc plate (322).

2. The pre-filter according to claim 1, characterized in that, The filter section (3) is arranged at equal intervals along the width direction of the rectangular frame (1).

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