A filter for venting a mixing tank

Abstract

A filter for venting a mixing tank includes a rectangular tube body. The inlet end of the rectangular tube body has a pre-filter element, the lower end of the pre-filter element has a slag discharge element, and the outlet end of the rectangular tube body has a rear filter element. The pre-filter element includes a concave part with transverse holes arranged horizontally on its vertical section. An inclined strip is welded to the front side of the concave part, with its front end extending downwards and its root welded to the lower end of each transverse hole. The rear filter element includes a vertical plate with vertically arranged rectangular holes. A V-shaped filter plate with multiple vent holes is located on the back side of the vertical plate. The filter plate covers each vertical plate, and a filter membrane is fixed inside the filter plate. This design solves the problem of frequent filter maintenance and high costs.

Description

Technical Field

[0001] This utility model relates to the field of concrete preparation technology, and in particular to a filter for aerating a mixing tank. Background Technology

[0002] Concrete preparation requires mixing aggregates and cement, then adding water to form a slurry. To facilitate the addition of cement and aggregates during mixing, a connection port is often provided at the top of the mixing tank. To prevent dust generated during material addition from escaping into the air and polluting the environment, a filter is usually installed at the connection port. The filter and its associated fan draw air out, while the filter inside the duct traps dust, preventing pollution. Commonly used filters employ membrane filtration. While this method improves filtration efficiency, the membrane is easily clogged by dust, requiring frequent replacement and increasing maintenance costs. Utility Model Content

[0003] This utility model provides a filter for venting a mixing tank, which overcomes the shortcomings of the prior art and solves the problem of frequent maintenance and high cost of filters, and has strong practicality.

[0004] In order to achieve the purpose of this utility model, the following technology is proposed to be adopted: A filter for aerating a mixing tank includes a rectangular tube body, a pre-filter at the air inlet end of the rectangular tube body, a slag discharge device at the lower end of the pre-filter, and a post-filter at the air outlet end of the rectangular tube body. The front filter element includes a concave part, on which a transverse hole is provided in a horizontally arranged manner in a vertical section. An inclined strip is welded to the front side of the concave part, the front end of the inclined strip extends downward at an angle, and the root of the inclined strip is welded to the lower end of each transverse hole. The post-filter includes a vertical plate with vertically arranged rectangular holes. A V-shaped filter plate is provided on the back side of the vertical plate with multiple air vents. The filter plate covers each vertical plate, and a filter membrane is fixed inside the filter plate.

[0005] Furthermore, the front end of the inclined strip is fitted with multiple longitudinally arranged V-shaped plates, with the openings of the V-shaped plates facing the same direction.

[0006] Furthermore, the slag discharge component includes a partition plate welded to the lower end of the inside of the rectangular tube, the lower end of the concave component welded to the partition plate, the lower end of the vertical plate welded to the partition plate, a discharge port opened at the front end of the partition plate, a front baffle plate bent at the front end of the partition plate, a rectangular opening opened on the front baffle plate, a slag discharge plate with a V-shaped structure welded to the lower wall of the partition plate, side plates welded to both ends of the slag discharge plate, and the front end of the side plates welded to the front baffle plate.

[0007] Furthermore, the filter plate has back strips bent on both sides, and the lower end of the back strips is formed with a U-shaped slot. Multiple fixing screws are inserted into the U-shaped slots and are connected to the vertical plate by threads.

[0008] Furthermore, a window is provided on the upper side of the rectangular tube, and an upper baffle is fixed to the window with screws. Multiple pull rods are installed on the upper baffle, and scrapers are welded to the lower ends of the pull rods. The scrapers are located inside the filter plate, and the outer periphery of the filter plate abuts against the filter membrane.

[0009] Furthermore, the outer periphery of the scraper is formed with a ring plate, and the upper end of the ring plate has a blade-shaped structure.

[0010] Furthermore, an upper pull bar is welded to the upper end of the pull rod, and a concave handle is welded to the upper pull bar.

[0011] The advantages of the above technical solution are: This invention employs a two-stage filtration process. The initial filtration effectively blocks most dust and particles, preventing excessive accumulation on the filter membrane and extending its lifespan. During the initial filtration, inclined baffles not only obstruct dust movement, reducing its speed and consuming its kinetic energy, thus causing it to settle, but also utilize multiple V-shaped plates. As air flows through the channels formed by two V-shaped plates, the surface created by their structure further obstructs dust, while swirling airflow at the corners causes some dust to settle and be discharged, thereby reducing the amount of dust trapped by the filter membrane.

[0012] This invention also utilizes a V-shaped filter plate and its filter membrane. On one hand, when airflow passes through, it blows away dust adhering to the inclined surface of the filter plate; on the other hand, it enhances filtration capacity by increasing the contact area. Furthermore, a scraper facilitates the removal of dust from the filter membrane, thereby extending its service life and reducing maintenance costs. 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 slag discharge component is shown.

[0016] Figure 3 The internal three-dimensional structure of one embodiment is shown. Figure 1 .

[0017] Figure 4 The internal three-dimensional structure of one embodiment is shown. Figure 2 .

[0018] Figure 5 The internal three-dimensional structure of one embodiment is shown. Figure 3 . Detailed Implementation

[0019] like Figures 1-5 As shown, a filter for aerating a mixing tank includes a rectangular tube 1, a pre-filter 3 at the air inlet end of the rectangular tube 1, a slag discharge component 2 at the lower end of the pre-filter 3, and a post-filter 4 at the air outlet end of the rectangular tube 1.

[0020] The pre-filter 3 includes a concave part 30, on the vertical section of which a transverse hole 31 is provided. An inclined strip 32 is welded to the front side of the concave part 30. The front end of the inclined strip 32 extends downward at an angle, and the root of the inclined strip 32 is welded to the lower end of each transverse hole 31.

[0021] The front end of the inclined strip 32 is fitted with a plurality of longitudinally arranged V-shaped plates 33, and the openings of the V-shaped plates 33 face the same direction.

[0022] The rear filter element 4 includes a vertical plate 40 with vertically oriented rectangular holes 41. A V-shaped filter plate 43 is provided on the back side of the vertical plate 40, with multiple air vents on the filter plate 43. The filter plate 43 covers each vertical plate 40, and a filter membrane 46 is fixed inside the filter plate 43. Rear strips 44 are bent on both sides of the filter plate 43, and U-shaped slots 45 are formed at the lower ends of the rear strips 44. Multiple fixing screws 42 pass through the U-shaped slots 45 and are threaded onto the vertical plate 40.

[0023] A window is provided on the upper side of the rectangular tube 1. An upper baffle 10 is fixed to the window with screws. Multiple pull rods 47 are threaded through the upper baffle 10. A scraper 48 is welded to the lower end of the pull rods 47. The scraper 48 is located inside the filter plate 43, and the outer periphery of the filter plate 43 abuts against the filter membrane 46. A ring plate 49 is formed on the outer periphery of the scraper 48, and the upper end of the ring plate 49 has a blade-shaped structure. An upper pull bar 50 is welded to the upper end of the pull rods 47, and a concave handle 51 is welded to the upper pull bar 50.

[0024] The slag discharge component 2 includes a partition plate 20 welded to the lower end of the inside of the rectangular tube 1, the lower end of the concave component 30 welded to the partition plate 20, the lower end of the vertical plate 40 welded to the partition plate 20, a discharge port 25 opened at the front end of the partition plate 20, a front baffle 22 bent at the front end of the partition plate 20, a rectangular opening 23 opened on the front baffle 22, a slag discharge plate 26 with a V-shaped structure welded to the lower wall of the partition plate 20, side plates 21 welded to both ends of the slag discharge plate 26, and the front end of the side plates 21 welded to the front baffle 22.

[0025] In this embodiment, during air filtration, the rectangular tube 1 is connected to the exhaust pipe of the mixing tank. The air containing dust is conveyed forward by the induced draft fan. During the conveying process, some dust is blocked by the V-shaped plate 33, and some larger dust particles will form a vortex at the corner of the V-shaped plate 33, causing the dust to move downward to the slag discharge plate 26 of the slag discharge component and be discharged. Some dust or particles will also be blocked by the inclined strip 32 when moving forward, and then roll down along its inclined surface and be discharged. Finally, when the dust moves with the air to the filter plate 43, it will be completely blocked. When the air enters, because there is an angle between the direction of the air flow and the contact surface of the filter plate 43, the dust adhering to the filter membrane 46 is blown away by the air, or the dust will be concentrated at the bend of the filter plate 43, thus improving the service life of the filter membrane 46. In addition, the operator can hold the concave handle 51 and move the scraper 48 up and down to remove the dust on the filter membrane 46 as needed, so as to activate the filtering ability of the filter membrane 46 without replacing it.

[0026] 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 filter for venting a mixing tank, characterized in that, It includes a rectangular tube (1), with a front filter (3) at the air inlet end of the rectangular tube (1), a slag discharge device (2) at the lower end of the front filter (3), and a rear filter (4) at the air outlet end of the rectangular tube (1). The front filter element (3) includes a concave part (30), and a transverse hole (31) is provided on the vertical section of the concave part (30). An inclined strip (32) is welded to the front side of the concave part (30). The front end of the inclined strip (32) extends downward at an angle, and the root of the inclined strip (32) is welded to the lower end of each transverse hole (31). The post-filter (4) includes a vertical plate (40), on which a rectangular vertical hole (41) is provided in a vertical direction. A filter plate (43) with a V-shaped structure is provided on the back side of the vertical plate (40). Multiple air holes are provided on the filter plate (43). The filter plate (43) is covered on each vertical plate (40). A filter membrane (46) is fixed on the inner side of the filter plate (43).

2. The filter for mixed stirred tank aeration according to claim 1, characterized by, The front end of the inclined strip (32) is fitted with multiple longitudinally arranged V-shaped plates (33), and the openings of the V-shaped plates (33) face the same direction.

3. The filter for breather of a mixed stirred tank according to claim 1, wherein The slag discharge component (2) includes a partition plate (20) welded to the lower end of the rectangular tube (1), the lower end of the concave component (30) welded to the partition plate (20), the lower end of the vertical plate (40) welded to the partition plate (20), the front end of the partition plate (20) is provided with a discharge port (25), the front end of the partition plate (20) is bent with a front baffle (22), the front baffle (22) is provided with a rectangular opening (23), the lower wall of the partition plate (20) is welded with a slag discharge plate (26) in a V-shape, the two ends of the slag discharge plate (26) are welded with side plates (21), and the front end of the side plates (21) is welded to the front baffle (22).

4. The hybrid mixer filter according to claim 1, wherein The filter plate (43) has a back strip (44) bent on both sides. The lower end of the back strip (44) is formed with a U-shaped slot (45). Multiple fixing screws (42) are inserted in the U-shaped slot (45). The fixing screws (42) are connected to the vertical plate (40) by threads.

5. The hybrid mixer filter according to claim 1, wherein A window is provided on the upper side of the rectangular tube (1), and an upper baffle (10) is fixed to the window by screws. Multiple pull rods (47) are provided on the upper baffle (10), and a scraper (48) is welded to the lower end of the pull rods (47). The scraper (48) is located inside the filter plate (43), and the outer periphery of the filter plate (43) abuts against the filter membrane (46).

6. The filter for breather of a mixed stirred tank according to claim 5, wherein The outer periphery of the scraper (48) is formed with a ring plate (49), and the upper end of the ring plate (49) has a blade-shaped structure.

7. The filter for breather of a mixed stirred tank according to claim 5, wherein The upper end of the pull rod (47) is welded with an upper pull bar (50), and a concave handle (51) is welded on the upper pull bar (50).

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