Filtering device of circulating water under-pressure backwater pool

Abstract

The utility model provides a circulating water under-pressure water return pool filtering device which comprises a front fixing plate, a through hole is formed in the middle of the front fixing plate, a filtering net cylinder is arranged at the through hole and is conical, a collecting cylinder is arranged at the tail end of the filtering net cylinder, a rotating shaft is arranged in the filtering net cylinder in a penetrating and inserting mode, and a water outlet is formed in the middle of the rotating shaft. A spiral blade is arranged on the rotating shaft, a brush is arranged on the edge of the spiral blade and makes contact with the inner wall of the filter screen cylinder, a fixed buckling block is arranged behind the collecting cylinder, two frames are arranged on the fixed buckling block in a matched mode, and plane filter screens are installed on the inner sides of the frames. According to the invention, the filter screen cylinder and the spiral blade arranged in the filter screen cylinder are arranged, the brush at the edge can clean the filter screen cylinder, the blocking probability of the filter screen cylinder can be reduced, and the rear plane filter screen further improves the filtering effect.

Description

Technical Field

[0001] This invention relates to the field of filtration technology, and in particular to a filtration device for a circulating water pressurized return water tank. Background Technology

[0002] Large-scale circulating cooling water systems mostly use open cooling towers. Because they are not closed structures, during the operation of the cooling tower, external debris, such as willow catkins and dust from the roadside, enters the cooling system, and algae proliferate in the cooling water. These situations can cause pipe corrosion and reduce heat exchange efficiency. Turbidity and sludge in the circulating water are among the main influencing factors. Therefore, filtration of circulating cooling water is essential. Summary of the Invention

[0003] To address the aforementioned problems, this invention discloses a circulating water pressurized return water tank filtration device, comprising a front fixed plate with a through hole in the middle, and a filter screen cylinder in a conical shape installed at the through hole. A collection cylinder is located at the rear end of the filter screen cylinder. A rotating shaft is inserted inside the filter screen cylinder, and spiral blades are mounted on the rotating shaft. Brushes are attached to the edges of the spiral blades, contacting the inner wall of the filter screen cylinder. Because the circulating water is pressurized, a sufficiently fast water flow enables the spiral blades to rotate. During rotation, the brushes at the edges of the blades scrub the inner wall of the filter screen cylinder, removing trapped debris that falls into the collection cylinder, ensuring filtration efficiency.

[0004] A fixing block is provided at the rear of the collection cylinder, and two frames are fitted onto the fixing block. A flat filter screen is installed on the inner side of the frame. The flat filter screen is for secondary filtration, and its mesh is smaller than that of the filter cylinder, thus trapping smaller debris. Therefore, two flat filters are provided. Under normal circumstances, only one is used. When the current flat filter screen is severely clogged, the other one is installed in advance, and then the clogged flat filter screen is removed, cleaned, and reused.

[0005] Preferably, a cross-shaped bracket is provided on the front side of the front fixing plate, and a fixing bolt is inserted at the end of the bracket and fixedly connected to the front fixing plate. The rotating shaft passes through the middle of the bracket. The bracket is used to support the rotating shaft and spiral blades located in the middle of the filter cylinder.

[0006] Preferably, a plurality of connecting rods are fixedly connected between the front fixing plate and the fixing fastening block. There are four connecting rods, making the front fixing plate and the fixing fastening block a single unit.

[0007] Preferably, the through hole in the middle of the front fixing plate has a stepped surface, and the front end of the filter cylinder is fixedly connected to a front cylinder member, with a convex ring on the side wall of the front cylinder member engaging with the stepped surface. That is, after the filter cylinder passes through the through hole, the front cylinder member is blocked by the stepped surface, achieving front-end engagement of the filter cylinder.

[0008] Preferably, a rear cylinder is fixedly connected to the rear end of the filter screen cylinder, and the collection cylinder is threadedly fitted to the end of the rear cylinder. This facilitates the removal of the collection cylinder and the removal of temporarily stored debris.

[0009] Preferably, the side wall of the rear cylinder is fixedly connected with several side ears, each side ear having a through hole through which a stepped rod is inserted. A rope is fixedly connected to one end of the stepped rod, and the other end of the rope is fixedly connected to a fixing fastener block. The rope, side ears, and stepped rod ensure that the filter cylinder is taut, maintaining its frustum-shaped form.

[0010] Preferably, the fixing block is provided with a slot, and the frame is fitted into the slot. The slot facilitates the installation and removal of the frame.

[0011] The beneficial effects of this invention are as follows:

[0012] 1. The filter screen is equipped with a conical structure and spiral blades inside. The spiral blades rotate with the water flow, and the brushes on the edges sweep away the debris attached to the filter screen, thus greatly reducing the risk of clogging. In addition, a collection cylinder is provided for easy cleaning.

[0013] 2. A flat filter screen is also installed behind the filter cylinder to further improve the filtration effect. There are two flat filters that can be used alternately, which makes it easy to clean one of them when it gets clogged, while the other flat filter screen can ensure the filtration of cooling water. Attached Figure Description

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

[0015] Figure 2 This is an exploded view of the present invention;

[0016] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0017] List of reference numerals in the attached diagram:

[0018] 1. Front fixing plate; 2. Bracket; 3. Connecting rod; 4. Filter screen cylinder; 5. Collection cylinder; 6. Rope; 7. Flat filter screen; 8. Fixing fastener block; 9. Fixing bolt; 10. Front cylinder; 11. Rotating shaft; 12. Spiral blade; 13. Frame; 14. Slot; 15. Stepped surface; 16. Stepped rod; 17. Side lug; 18. Rear cylinder. Detailed Implementation

[0019] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0020] like Figures 1 to 3 As shown, a circulating water pressurized return water tank filtration device includes a front fixed plate 1, which is a rectangular plate with a through hole in the middle. A filter screen cylinder 4 is installed at the through hole, and the filter screen cylinder 4 is conical. The conical structure has a larger surface area, which improves the filtration efficiency. A collection cylinder 5 is installed at the tail end of the filter screen cylinder 4. The conical structure also makes it easier for impurities to be flushed into the collection cylinder 5 by the water flow. The collection cylinder 5 temporarily stores impurities for regular cleaning. A rotating shaft 11 is inserted inside the filter screen cylinder 4, and a spiral blade 12 is installed on the rotating shaft 11. Since this device is used in pressurized circulating water, the water flow is fast enough to drive the spiral blade 12 to rotate without the need for a drive unit. The edge of the spiral blade 12 is provided with a brush, which contacts the inner wall of the filter screen cylinder 4. During the rotation of the spiral blade 12, the brush sweeps off the impurities attached to the inner wall of the filter screen cylinder 4 and flushes them into the collection cylinder 5 with the water flow.

[0021] A fixing block 8 is located at the rear of the collection cylinder 5. The fixing block 8 has a cuboid structure, and its front end is shaped the same as the front fixing plate 1. Two frames 13 are fitted onto the fixing block 8. A flat filter screen 7 is installed on the inner side of the frame 13. The mesh size of the flat filter screen 7 is smaller than that of the filter cylinder 4, further filtration is performed. Because a flat filter screen 7 is used and the mesh size is small, it needs to be cleaned regularly to prevent clogging. Two flat filters screens 7 are installed here, but only one is used normally. When the current flat filter screen 7 is clogged, the other flat filter screen 7 is installed, and the clogged flat filter screen 7 is removed for cleaning.

[0022] A cross-shaped bracket 2 is provided on the front of the front fixing plate 1. A fixing bolt 9 is inserted through the end of the bracket 2 and is fixedly connected to the front fixing plate 1. The end of the bracket 2 fits at the corner of the front fixing plate 1. The rotating shaft 11 passes through the middle of the bracket 2, that is, the bracket 2 is used to support the rotating shaft 11.

[0023] Several connecting rods 3 are fixedly connected between the front fixing plate 1 and the fixing fastening block 8. There are four connecting rods 3, all of which are fixedly connected to the corners of the front fixing plate 1 and the fixing fastening block 8.

[0024] A stepped surface 15 is provided in the through hole in the middle of the front fixed plate 1. The front end of the filter screen cylinder 4 is fixedly connected to the front cylinder 10, and the side wall of the front cylinder 10 is provided with a convex ring that fits on the stepped surface 15. The front cylinder 10 is blocked by the stepped surface 15.

[0025] The rear end of the filter cylinder 4 is fixedly connected to a rear cylinder component 18, and the collection cylinder 5 is threadedly fitted to the end of the rear cylinder component 18. This facilitates the removal of the collection cylinder 5 for cleaning.

[0026] The side wall of the rear cylinder 18 is fixedly connected with several side ears 17. The side ears 17 are provided with through holes, and a stepped rod 16 is inserted through the through holes. That is, one side has a larger diameter and the other side has a smaller diameter. The smaller diameter can pass through the through hole on the side ear 17. The end of the stepped rod 16 is fixedly connected with a rope 6. The other end of the rope 6 is fixedly connected to the fixed fastening block 8. Through the connection of the rope 6, the filter cylinder 4 is kept in a taut state, which is conducive to the rotation of the spiral blade 12.

[0027] The fixing block 8 is provided with a slot 14, and the frame 13 is fitted into the slot 14. The slot 14 is provided to facilitate the installation or removal of the frame 13.

[0028] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features.

Claims

1. A circulating water pressurized return water tank filtration device, characterized in that, Includes a front fixing plate (1), the front fixing plate (1) has a through hole in the middle, and a filter screen cylinder (4) is provided at the through hole. The filter screen cylinder (4) is conical. A collection cylinder (5) is provided at the tail end of the filter screen cylinder (4). A rotating shaft (11) is inserted inside the filter screen cylinder (4). A spiral blade (12) is provided on the rotating shaft (11), and a brush is provided on the edge of the spiral blade (12). The brush is in contact with the inner wall of the filter screen cylinder (4). A fixing block (8) is provided at the rear of the collection tube (5), and two frames (13) are provided on the fixing block (8). A flat filter screen (7) is installed on the inner side of the frame (13).

2. The circulating water pressurized return water tank filtration device according to claim 1, characterized in that: The front of the front fixing plate (1) is provided with a cross-shaped bracket (2), and a fixing bolt (9) is inserted at the end of the bracket (2), and the fixing bolt (9) is fixedly connected to the front fixing plate (1). The rotating shaft (11) passes through the middle of the bracket (2).

3. The circulating water pressurized return water tank filtration device according to claim 1, characterized in that: Several connecting rods (3) are fixedly connected between the front fixing plate (1) and the fixing fastening block (8).

4. The circulating water pressurized return water tank filtration device according to claim 1, characterized in that: The front fixing plate (1) has a stepped surface (15) in the through hole in the middle. The front end of the filter screen cylinder (4) is fixedly connected to the front cylinder (10), and the side wall of the front cylinder (10) is provided with a convex ring that fits on the stepped surface (15).

5. The circulating water pressurized return water tank filtration device according to claim 1, characterized in that: The rear end of the filter cylinder (4) is fixedly connected to a rear cylinder (18), and the collection cylinder (5) is threadedly fitted to the end of the rear cylinder (18).

6. The circulating water pressurized return water tank filtration device according to claim 5, characterized in that: The rear cylindrical part (18) has several side ears (17) fixedly connected to its side wall. The side ears (17) have through holes, and a step rod (16) is inserted through the through holes. The end of the step rod (16) is fixedly connected to a rope (6), and the other end of the rope (6) is fixedly connected to the fixing buckle block (8).

7. The circulating water pressurized return water tank filtration device according to claim 1, characterized in that: The fixing fastener (8) is provided with a slot (14), and the frame (13) is fitted in the slot (14).

Images