Cylinder type filtering device

Abstract

The invention discloses a cylindrical filtering device for filtering sewage of a sedimentation tank in a chemical enterprise, which comprises an outer wall, a support framework, an inner wall, a filtering membrane, a spacer ring and a steel wire stay wire, the outer wall and the inner wall are made of stainless steel materials, the outer wall is of a closed cylindrical structure, and the inner wall is of a rhombic hollow net structure; the filter cartridge adopts a filter membrane technology for liquid separation and has remarkable advantages, dirt treatment on the surface of the filter membrane is the key for maintaining membrane flux and prolonging the service life of the membrane, and the cartridge type filter device is simple in structure, convenient to wash and capable of protecting the membrane layer.

Description

Technical Field

[0001] The present invention relates to a cartridge filter device for filtering sewage in a sedimentation tank of a chemical enterprise, in particular to a cartridge filter device which adopts an inside-out filtering method. Background Art

[0002] In chemical companies, the use of filtration membrane technology for liquid separation has significant advantages. Dirt treatment on the surface of the filtration membrane is the key to maintaining membrane flux and extending membrane life. Common types of dirt include organic pollutants, inorganic salt scaling, microbial film and particulate matter deposition. For these dirt, physical cleaning - backwashing method is used to flush the membrane surface with reverse water flow to remove loose particles and reversible dirt. However, for stubborn surface dirt, backwashing method and high-speed water flow or intermittent pulse water flow to flush the membrane surface also have agglomerated dirt sticking to the surface, which cannot be removed cleanly, affecting the performance and service life of the membrane. High-pressure pulse water flow must be used for secondary flushing of the dirt surface, which can easily damage the membrane layer and affect the filtration effect. Summary of the Invention

[0003] The object of the present invention is to provide a cartridge filter device which has a simple structure, is convenient to flush and can protect the membrane layer.

[0004] The object of the present invention is achieved by the following technical solution: the cylindrical filter device comprises an outer wall, a support frame, an inner wall, a filter membrane, a spacer ring, and a steel wire rope, wherein the outer wall and the inner wall are made of stainless steel, the outer wall is a closed cylindrical structure, and the inner wall is a diamond-shaped hollow mesh structure; The filter membrane is attached to the inner wall, and the filter membrane, outer wall and inner wall are connected by a supporting frame to form a water filtration space; the filter membrane is fixed in sections and positions by multiple spacer rings, and the multiple spacer rings are connected and fixed to the outer wall by steel wire ropes; The steel wire is connected to the spacer ring by welding, and the steel wire is welded at the tangent line of the outer ring of each spacer ring; and the steel wire is embedded in the filter membrane.

[0005] The multiple spacer rings are connected and fixed to the outer wall through steel wire ropes, and the steel wire ropes are connected through spring tensioners installed on the outer wall to maintain a constant tension balance.

[0006] A water outlet is arranged at the bottom of the outer wall.

[0007] The diameter of the spacer ring is 0.5-1 cm; the outer diameter of the spacer ring is larger than the inner diameter of the filter membrane.

[0008] The advantages of the present invention are: the cylindrical filter device is directly connected to the drain pipe of the sewage pool, and the cylindrical filter device is placed vertically, the sewage flows from top to bottom, the filtered water is discharged through the outlet, and the sewage flowing to the lower end is re-sent to the sewage pool; when too much dirt accumulates on the surface of the filter membrane and affects the filtration, forward and reverse flushing must be performed. During the flushing process, the spacer ring and the steel wire rope stabilize the shape of the filter membrane, the flushing is convenient and quick, and the service life of the filter membrane is extended.

[0009] The present invention will be described in further detail with reference to the accompanying drawings.

[0010] Figure 1 This is a cross-sectional view of the product.

[0011] Figure 2 This is a top view of the product.

[0012] 1. Outer wall 2. Support frame 3. Inner wall 4. Filter membrane 5. Spacer ring 6. Steel wire 7. Water outlet 8. Spring tensioner.

[0013] Combine Figure 1 、 Figure 2 As can be seen, the cartridge filter device comprises an outer wall 1, a support frame 2, an inner wall 3, a filter membrane 4, a spacer ring 5, and a steel wire 6. The outer wall 1 and the inner wall 3 are made of stainless steel. The outer wall 1 is a closed cylindrical structure, and the inner wall 3 is a diamond-shaped hollow mesh structure. The filter membrane 4 is attached to the inner wall 3, and the filter membrane 4, the outer wall 1 and the inner wall 3 are connected by the support frame 2 to form a water filtration space; the filter membrane 4 is fixed in sections and at equal positions by multiple spacer rings 5, and the multiple spacer rings 5 ​​are connected and fixed to the outer wall 1 by steel wire ropes 6.

[0014] The steel wire 6 is connected to the spacer ring 5 by welding, and the steel wire 6 is welded to the tangent of the outer ring of each spacer ring 5.

[0015] A water outlet 7 is provided at the bottom of the outer wall 1 .

[0016] The diameter of the spacer ring 5 is 0.8 cm, and the outer diameter of the spacer ring 5 is larger than the inner diameter of the filter membrane 4 .

[0017] The plurality of spacer rings 5 ​​are connected and fixed to the outer wall 1 by steel wires 6 , and the steel wires 6 are connected by spring tensioners 8 installed on the outer wall 1 to maintain a constant tension balance.

Claims

1. A cartridge filter device comprising an outer wall (1), a support frame (2), an inner wall (3), a filter membrane (4), a spacer ring (5), and a steel wire (6), characterized in that: The outer wall (1) and the inner wall (3) are made of stainless steel. The outer wall (1) is a closed cylindrical structure, and the inner wall (3) is a diamond-shaped hollow mesh structure. The filter membrane (4) is attached to the inner wall (3), and the filter membrane (4), the outer wall (1) and the inner wall (3) are connected via a support frame (2) to form a water filtration space; the filter membrane (4) is fixed in sections and positions via a plurality of spacer rings (5) of a steel ring structure, and the plurality of spacer rings (5) are connected and fixed to the outer wall (1) via a steel wire (6).

2. The cartridge filter device according to claim 1, characterized in that: The steel wire pull wire (6) is connected to the spacer ring (5) by welding, the steel wire pull wire (6) is welded to the outer ring tangent of each spacer ring (5), and the steel wire pull wire (6) is embedded in the filter membrane (4).

3. The cartridge filter device according to claim 1, wherein: The plurality of spacer rings (5) are connected and fixed to the outer wall (1) via a steel wire (6), and the steel wire (6) is connected via a spring tensioner (8) installed on the outer wall (1) to maintain a constant tension balance.

4. The cartridge filter device according to claim 1, characterized in that: The diameter of the spacer ring (5) is 0.5-1 cm, and the outer diameter of the spacer ring (5) is larger than the inner diameter of the filter membrane (4).

5. The cartridge filter device according to claim 1, characterized in that: A water outlet (7) is provided at the bottom of the outer wall (1).

6. The cartridge filter device according to claim 1, characterized in that: There are no fewer than 8 steel wires (6) in each cylindrical filter device, and each steel wire (6) is spaced at equal distances.

Images