Angle through type dirt separator with rapid backwashing function

Abstract

The utility model belongs to the technical field of dirt removers, particularly relates to an angle-through dirt separator with a quick backwashing function, and aims at solving the problems of low backwashing efficiency, complicated structure and difficulty in maintenance in the background technology, the angle-through dirt separator comprises a barrel, a butterfly valve is welded on the outer wall of one end of the barrel, a filtering piece is arranged in the barrel, and a water inlet is formed in the other end of the barrel. A backwashing mechanism is arranged above the filter piece in the cylinder body, the backwashing mechanism comprises backwashing pipes, backwashing nozzles, a butt joint pipe and a vertical pipe, and the backwashing pipes which are distributed at equal intervals are positioned in the cylinder body and are uniformly distributed along the axis of the cylinder body. In the back-flushing mechanism, the single-time flushing efficiency is improved, the uniform flushing pressure is ensured, local blockage is avoided, in a filtering piece, quick disassembly and assembly are realized, the sealing performance is better, the maintenance time is shortened, the filter screen can be replaced without disassembling the cylinder body through the design of the end cover connected with the flange, and the shutdown loss is reduced.

Description

Technical Field

[0001] This utility model relates to the field of dirt separator technology, and in particular to an angle-type dirt separator with a rapid backwashing function. Background Technology

[0002] Traditional angle-type sludge separators are widely used in industrial water treatment systems, but they have the following significant problems:

[0003] Low backwashing efficiency: Traditional backwashing mechanisms often use a single nozzle or a simple water flow path, which cannot cover the entire area of ​​the filter screen, resulting in dirt residue and requiring multiple rinses or manual intervention.

[0004] Complex structure and difficult maintenance: The integration of filter elements and backwashing mechanism is low, disassembly requires multiple steps, and the sealing structure is prone to wear, resulting in a short maintenance cycle.

[0005] While existing technologies offer some improvements to address the aforementioned issues, such as adding multiple nozzles or refining the sealing structure, they still suffer from drawbacks including blind spots in the flushing process, easy clogging of components, and high maintenance costs. Therefore, there is an urgent need for a compact, highly efficient, and easy-to-maintain angle-type filter. Utility Model Content

[0006] In view of the shortcomings of the prior art, this utility model provides an angle-type dirt separator with a rapid backwashing function, which overcomes the shortcomings of the prior art and effectively solves the problems of low backwashing efficiency, complex structure and difficult maintenance.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An angle-type filter with rapid backwashing function includes a cylinder. A butterfly valve is welded to the outer wall of one end of the cylinder, and a filter element is installed inside the cylinder. A backwashing mechanism is installed inside the cylinder above the filter element. The backwashing mechanism includes a backwash pipe, a backwash nozzle, a connecting pipe, and a vertical pipe. The backwash pipes are evenly distributed inside the cylinder and are uniformly distributed along the axis of the cylinder. The backwash nozzles are evenly distributed on the bottom outer wall of the backwash pipes. The connecting pipe is welded to the outer wall of the backwash nozzle. The vertical pipe is welded to the outer wall of one of the backwash nozzles and is installed through the inner wall of the cylinder.

[0009] Preferably, the butterfly valve includes a horizontal inlet, a valve stem, and a sealing plate, wherein the horizontal inlet is welded to the outer wall of one end of the cylinder, the valve stem is rotatably connected to the top inner wall of the horizontal inlet via a bearing, and the sealing plate is disposed inside the horizontal inlet.

[0010] Preferably, the filter element includes a positioning ring, a filter screen, and a limiting disc, wherein the positioning ring is welded to the inside of the cylinder, the filter screen is disposed inside the cylinder, one end of the filter screen is embedded in the inner wall of the positioning ring, and the limiting disc is disposed at the other end of the filter screen.

[0011] Preferably, the filter element further includes a limiting block and a limiting groove, wherein the limiting block is disposed on the inner wall of the other end of the filter screen, and the limiting groove is opened on the outer wall of one side of the limiting plate, and the number of limiting blocks is the same as the number of limiting grooves.

[0012] Preferably, a vertical outlet is welded to the inner wall of the top of the cylinder.

[0013] Preferably, a drain pipe is welded to the bottom inner wall of the cylinder.

[0014] Preferably, an inspection end cover is fixedly connected to the outer wall of the other end of the cylinder via a flange, and a limiting plate is disposed on the inner wall of the inspection end cover.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. The angle-type filter with rapid backwashing function designed in this paper has backwash pipes and nozzles that are evenly distributed in the backwashing mechanism. Through the backwash pipes evenly arranged along the axis of the cylinder and the dense nozzles at the bottom, a three-dimensional flushing water flow covering the entire area of ​​the filter screen is formed, which thoroughly removes dirt and improves the efficiency of a single flush. In addition, the vertical pipe runs through the cylinder and is connected to the external high-pressure water source. Through the connecting pipe, multiple nozzles can be supplied with water synchronously, ensuring uniform flushing pressure and avoiding local blockage.

[0017] 2. The angle-type filter with rapid backwashing function designed in this paper features a double fixation of the limiting plate and positioning ring in the filter element. The filter screen is embedded in the limiting groove through the limiting block and fixed by welding of the positioning ring, which enables quick disassembly and assembly and better sealing, shortening maintenance time. The end cover design with flange connection allows the filter screen to be replaced without disassembling the cylinder, reducing downtime losses. Attached Figure Description

[0018] Figure 1 This invention provides a schematic diagram of the overall structure of an angle-type dirt separator with rapid backwashing function. Figure 1 ;

[0019] Figure 2 This invention provides a schematic diagram of the overall structure of an angle-type dirt separator with rapid backwashing function. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the internal structure of the cylinder of an angle-type dirt separator with rapid backwashing function proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the disassembled structure of the filter element of an angle-type dirt separator with rapid backwashing function proposed in this utility model.

[0022] Figure 5 This is a schematic diagram of the backwashing mechanism of an angle-type dirt separator with rapid backwashing function proposed in this utility model.

[0023] In the diagram: 1. Cylinder; 2. Butterfly valve; 21. Horizontal inlet; 22. Valve stem; 23. Sealing plate; 3. Filter element; 31. Positioning ring; 32. Filter screen; 33. Limiting disc; 34. Limiting block; 35. Limiting groove; 4. Backwashing mechanism; 41. Backwashing pipe; 42. Backwashing nozzle; 43. Connecting pipe; 44. Vertical pipe; 5. Vertical outlet; 6. Drain pipe; 7. Inspection end cover. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1 (in combination) Figures 1-5 ):

[0026] Integrated structure of cylinder 1 and butterfly valve 2:

[0027] The cylinder is made of 316L stainless steel and welded as a whole, with the inner wall polished to reduce resistance.

[0028] The horizontal inlet 21 of the butterfly valve 2 is welded to the end of the cylinder 1. The valve stem 22 is connected to the sealing plate 23 through a top bearing. Rotating the valve stem 22 can quickly open and close the water flow. The sealing plate 23 is coated with fluororubber, which is corrosion resistant and has a sealing life of more than 100,000 cycles.

[0029] Installation and fixing of filter element 3:

[0030] The filter screen 32 is a double-layer 316L woven mesh with a mesh count of 80-200. One end of it is embedded in the slot of the positioning ring 31, and the other end is engaged with the limiting groove 35 of the limiting plate 33 through the limiting block 34 to prevent it from falling off.

[0031] The limit plate 33 is fixed to the inner wall of the inspection end cover 7 by bolts. After removing the inspection end cover 7, the filter screen 32 can be directly pulled out without special tools.

[0032] The working process of backwashing mechanism 4:

[0033] The backwash pipes 41 are evenly distributed along the axis of the cylinder 1, and 6-8 backwash nozzles 42 are welded to the bottom of each pipe to ensure that the water flow covers the back of the filter screen 32.

[0034] A high-pressure water pump is connected to the vertical pipe 44. During rinsing, the water flow is diverted through the vertical pipe 44 to each backwash pipe 41. The nozzle sprays at a pressure of 0.5-1.0MPa for 10-15 seconds to complete the rinsing.

[0035] Synergistic effect of sewage pipe 6 and vertical outlet 5:

[0036] During normal filtration, water enters from the horizontal inlet 21, passes through the filter screen 32, and is discharged from the vertical outlet 5.

[0037] During backwashing, butterfly valve 2 closes the inlet, and the electric valve of drain pipe 6 opens automatically, allowing the waste to be discharged directly to the external collection device along with the high-pressure water flow.

[0038] Working principle:

[0039] Normal filtration stage: Water flows into cylinder 1 through horizontal inlet 21, is guided by sealing plate 23 of butterfly valve 2, and then passes through filter screen 32 to intercept impurities. The purified water is discharged from vertical outlet 5. The limiting structure of filter screen 32 ensures that it does not shift under the impact of water flow, and the double-layer woven mesh design balances filtration accuracy and flow rate.

[0040] Backwashing Phase: When the differential pressure sensor detects blockage in filter screen 32, the control system closes butterfly valve 2, opens drain pipe valve 6, and starts the high-pressure water pump. High-pressure water flows through riser pipe 44 into backwash pipe 41, and from backwash nozzle 42, it washes filter screen 32 in a fan-shaped water flow. After the dirt is removed, it is discharged through drain pipe 6. After flushing is completed, the system automatically resets butterfly valve 2 and drain valve, restoring the filtration process.

[0041] Maintenance: Remove the inspection end cover 7 of the flange connection, loosen the bolts of the limit plate 33, and the filter screen 32 can be pulled out for cleaning or replacement. The backwash nozzle 42 can be quickly disassembled through the connecting pipe 43 to avoid affecting the flushing effect due to blockage.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An angle-type dirt separator with rapid backwashing function, comprising a cylinder (1), characterized in that, A butterfly valve (2) is welded to the outer wall of one end of the cylinder (1), and a filter element (3) is provided inside the cylinder (1). A backwashing mechanism (4) is provided inside the cylinder (1) above the filter element (3). The backwashing mechanism (4) includes a backwash pipe (41), a backwash nozzle (42), a connecting pipe (43), and a vertical pipe (44). The backwash pipes (41) are evenly distributed inside the cylinder (1) and are evenly distributed along the axis of the cylinder (1). The backwash nozzles (42) are evenly distributed on the bottom outer wall of the backwash pipes (41). The connecting pipe (43) is welded to the outer wall of the backwash nozzle (42). The vertical pipe (44) is welded to the outer wall of one of the backwash nozzles (42) and is installed through the inner wall of the cylinder (1).

2. The angle-type filter with rapid backwashing function according to claim 1, characterized in that, The butterfly valve (2) includes a horizontal inlet (21), a valve stem (22) and a sealing plate (23). The horizontal inlet (21) is welded to the outer wall of one end of the cylinder (1), the valve stem (22) is rotatably connected to the top inner wall of the horizontal inlet (21) through a bearing, and the sealing plate (23) is disposed inside the horizontal inlet (21).

3. The angle-type filter with rapid backwashing function according to claim 1, characterized in that, The filter element (3) includes a positioning ring (31), a filter screen (32), and a limiting plate (33). The positioning ring (31) is welded to the inside of the cylinder (1), and the filter screen (32) is disposed inside the cylinder (1). One end of the filter screen (32) is embedded in the inner wall of the positioning ring (31), and the limiting plate (33) is disposed at the other end of the filter screen (32).

4. The angle-type filter with rapid backwashing function according to claim 1, characterized in that, The filter element (3) further includes a limiting block (34) and a limiting groove (35), wherein the limiting block (34) is disposed on the inner wall of the other end of the filter screen (32), and the limiting groove (35) is opened on the outer wall of one side of the limiting plate (33). The number of limiting blocks (34) is the same as the number of limiting grooves (35).

5. The angle-type filter with rapid backwashing function according to claim 1, characterized in that, A vertical outlet (5) is welded to the inner top wall of the cylinder (1).

6. The angle-type filter with rapid backwashing function according to claim 1, characterized in that, A drain pipe (6) is welded to the bottom inner wall of the cylinder (1).

7. The angle-type filter with rapid backwashing function according to claim 1, characterized in that, The outer wall of the other end of the cylinder (1) is fixedly connected to an inspection end cover (7) by a flange, and a limiting plate (33) is provided on the inner wall of the inspection end cover (7).

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