Paper-making industry composite board liquid filtering device

Abstract

The utility model discloses a paper-making industry composite board filtrate device, which is provided with a cylinder body, the upper part of the cylinder body is provided with a breather valve port and an exhaust port, the whole cylinder body is cylindrical, the side wall of the cylinder body is provided with a material inlet, the material inlet is tangent to the circle of the outer wall of the cylinder body, one side of the lower bottom end of the cylinder body is provided with a drain outlet, and the other side of the cylinder body is provided with a filter screen. A material main outlet is arranged at the lower part of the barrel body, a material auxiliary outlet is arranged above the material main outlet in the horizontal direction, a fine material outlet is arranged above the material auxiliary outlet in the horizontal direction, and the fine material outlet is provided with a water backwashing port on the side wall of the outer side of the barrel body. The medium at the material inlet can be effectively subjected to primary flow stabilization and flow velocity reduction, and the water backwashing port is arranged to facilitate cleaning of the filter screen, so that the operation is convenient.

Description

Technical Field

[0001] The utility model relates to the field of chemical papermaking industry, in particular to a fine filtering cylinder. Background Art

[0002] The papermaking industry in my country is one of the major energy-consuming sectors and an essential industry. The papermaking industry requires numerous processes, each of which generates varying degrees of pollution. During the pulping process, various impurities may be present. Existing filter cartridges have low filtration efficiency, resulting in frequent clogging of the filtrate tank, which is difficult to disassemble and clean. Utility Model Content

[0003] In order to solve the above problems, the utility model discloses a composite plate filtration device for the papermaking industry.

[0004] The specific technical solutions are as follows:

[0005] A composite plate filtration device for the papermaking industry is provided with a cylinder, a breathing valve port and an exhaust port are provided on the upper part of the cylinder, the cylinder is cylindrical as a whole, a material inlet is provided on the side wall of the cylinder, the material inlet is tangent to the circle of the outer wall of the cylinder, a sewage outlet is provided on one side of the lower bottom end of the cylinder, a main material outlet is provided at the lower part of the cylinder, an auxiliary material outlet is provided above the level of the main material outlet, a fine material outlet is provided above the level of the auxiliary material outlet, and a water backwash port is provided on the side wall outside the cylinder at the fine material outlet.

[0006] Filter plates are provided inside the auxiliary material outlet, the main material outlet and the fine material outlet.

[0007] The diameter of the main material outlet is larger than the diameter of the auxiliary material outlet, and the diameter of the auxiliary material outlet is larger than the diameter of the fine material outlet.

[0008] The water backwash port is in an inclined state and intersects with the wall of the fine material outlet.

[0009] An overflow port is provided on one side of the upper end portion of the cylinder.

[0010] The shape of the material inlet is formed by sweeping a circular ring and a guide line, wherein the guide line transitions downward first and then upward, and both ends of the material inlet have a height difference.

[0011] The advantages of the utility model are: graded filtration, good filtration effect, and fast filtration speed. The water backwash port is provided to facilitate reverse cleaning of the fine material outlet, reducing the cleaning work of the fine material outlet. The structure of the material inlet plays a role in preliminary stabilizing the flow of the liquid and reducing the liquid flow rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 for Figure 1 A top view of

[0014] Figure 3 This is a schematic diagram of the three-dimensional structure of the utility model after removing the upper end structure of the cylinder;

[0015] Figure 4 This is an exploded diagram of the material inlet, fine material outlet and cylinder. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] A papermaking composite plate filtration device is provided with a cylinder 1. A breathing valve port K and an exhaust port V are provided on the upper portion of the cylinder 1. The cylinder 1 is cylindrical as a whole. A material inlet N1 is provided on the side wall of the cylinder 1. The material inlet N1 is arranged tangentially to the circle of the outer wall of the cylinder 1. A sewage outlet N6 is provided on one side of the lower bottom end of the cylinder 1. A main material outlet N3A is provided at the lower portion of the cylinder 1. An auxiliary material outlet N3B is provided above the level of the main material outlet N3A. A fine material outlet N3C is provided above the level of the auxiliary material outlet N3B. A water backwash outlet N4 is provided on the side wall outside the cylinder for the fine material outlet N3C.

[0018] Filter plates 2 are provided inside the auxiliary material outlet N3B, the main material outlet N3A, and the fine material outlet N3C.

[0019] The diameter of the main material outlet N3A is larger than the diameter of the auxiliary material outlet N3B, and the diameter of the auxiliary material outlet N3B is larger than the diameter of the fine material outlet N3C.

[0020] The water backwash port N4 is inclined and intersects with the wall of the fine material outlet N3C.

[0021] An overflow port N5 is provided on one side of the upper end of the cylinder 1 .

[0022] The shape of the material inlet N1 is formed by sweeping a circular ring and a guide line. The guide line first transitions downward and then transitions upward, and there is a height difference between the two ends of the material inlet N1.

[0023] The operating principle of this utility model is as follows: a mixture containing highly corrosive chloride ions, solid impurities, and various other components enters the cylinder tangentially through the material inlet N1. Due to this tangential entry and the shape of the material inlet, the medium initially flows upward, achieving initial stabilization. Then, due to the height difference between the two ends of the material outlet, the medium's flow rate is reduced, and the medium rotates along the cylinder wall into the interior of the device, minimizing fluctuations in the liquid level inside the device, maintaining a relatively stable liquid level and reducing impact on the material at the bottom. After a certain period of time within the cylinder, the mixed liquid gradually stratifies due to factors such as impurity content, particle size, and density. Three discharge ports are located at different heights at the bottom of the cylinder, depending on the process requirements for the purity of the medium components. These three discharge ports are located within the cylinder, and the filter plate apertures are determined by the process requirements. The area below the main material outlet N3A contains the highest concentration of solid impurities and is of little use. This portion of the mixture is discharged directly to the waste liquid storage tank through the sewage outlet N6. The main material outlet N3A is at the bottom and has the largest aperture. The downstream demand for the medium in this area is large and the index requirements are relatively low. The medium and most impurities enter the next process through this port, which is the main material outlet; the auxiliary material outlet N3B is in the middle area and has the second largest aperture. The discharged material flows to specific equipment; the fine material outlet N3C is at the top and has the smallest aperture. It is the outlet for liquids with higher purity. At the same time, the medium discharged from this port is of higher purity. The filter plate pore diameter is small and easily clogged. Therefore, the N3C pipe is equipped with a water backwash port N4. Through the water backwash port N4, the filter plate can be backwashed to remove dirt on the filter plate.

Claims

1. A papermaking composite plate filtration device, comprising a cylinder, a breathing valve port and an exhaust port being provided on the upper portion of the cylinder, characterized in that: The cylinder is cylindrical as a whole, and a material inlet is provided on the side wall of the cylinder, and the material inlet is tangent to the circle of the outer wall of the cylinder. A sewage outlet is provided on one side of the lower bottom end of the cylinder, and a main material outlet is provided at the lower part of the cylinder. An auxiliary material outlet is provided above the level of the main material outlet, and a fine material outlet is provided above the level of the auxiliary material outlet. A water backwash port is provided on the side wall outside the cylinder for the fine material outlet.

2. The papermaking composite plate filtration device according to claim 1, characterized in that: Filter plates are provided inside the auxiliary material outlet, the main material outlet and the fine material outlet.

3. The papermaking composite plate filtration device according to claim 2, characterized in that: The diameter of the main material outlet is larger than the diameter of the auxiliary material outlet, and the diameter of the auxiliary material outlet is larger than the diameter of the fine material outlet.

4. The papermaking composite plate filtration device according to claim 2, characterized in that: The water backwash port is in an inclined state and intersects with the wall of the fine material outlet.

5. The papermaking composite plate filtration device according to claim 2, characterized in that: An overflow port is provided on one side of the upper end portion of the cylinder.

6. The papermaking composite plate filtration device according to claim 2, characterized in that: Structure of the material inlet: The shape of the material inlet is formed by sweeping a circular ring and a guide line. The guide line first transitions downward and then upward, and there is a height difference between the two ends of the material inlet.

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