Filter at inlet of desulfurizing tower

Abstract

The utility model relates to an inlet filter, in particular to a desulfurizing tower inlet filter which comprises a shell, a top cover and a filter screen cylinder detachably arranged in the shell, a material inlet and a material outlet opposite to the material inlet are formed in the side wall of the shell, and the material inlet extends into the shell. A material inlet hole matched with the material inlet is formed in the side wall of the filter screen cylinder, the end, extending into the shell, of the material inlet is inserted into the material inlet hole, the upper end face of the filter screen cylinder is horizontally arranged, the height of the filter screen cylinder is matched with the height of the interior of the shell, and the top cover abuts against the upper end face of the filter screen cylinder after being buckled. The contact surface of the filter screen cylinder and the top cover is annular, the stress is more balanced, the stability of the filter screen cylinder is improved, the filter screen cylinder mainly receives extrusion stress, the stress line is larger, and the filter screen cylinder is not easy to damage, so that the service life of the filter screen cylinder is prolonged, and the filter screen cylinder is suitable for filtering impurities and is particularly suitable for filtering impurities at an inlet of a desulfurizing tower.

Description

Technical Field

[0001] The utility model relates to an inlet filter, in particular to an inlet filter of a desulfurization tower. Background Art

[0002] In the desulfurization system, especially the spray desulfurization system, the circulation pump is one of the most core equipment. Its operation stability and quality seriously affect the operation effect of the whole desulfurization system. However, in the actual operation process, there are many factors that interfere with its normal operation, among which the most important are the large particles in the desulfurization slurry, anti-corrosion materials and other flaky or strip-shaped tough falling objects. The consequences of them entering the circulation pump are extremely serious. At the least, the pump body is blocked and the pump cannot operate; at the worst, the pump body is overloaded and the circulation pump is burned. At the same time, it also affects the operation of the whole desulfurization system.

[0003] In order to avoid the above problems, an inlet filter is often installed at the inlet of the desulfurization tower circulation pump. The utility model with the authorization announcement number CN221358765U discloses a flue gas desulfurization slurry filter, including a filter housing and a filter screen cartridge detachably arranged in the housing, and a retractable handle is fixed to the upper end of the filter screen cartridge, and the filter screen cartridge is fixed by abutting the upturned handle against the bottom surface of the sealing cover of the housing. Although this fixing method in which the handle and the sealing cover are abutted against each other can fix the filter screen cartridge to a certain extent, it lacks certain stability because the abutting part is in linear contact and the abutting straight line is perpendicular to the material conveying direction, and the abutting force is applied to the connection point between the handle and the filter screen cartridge, and it is a shear force, which makes the connection between the handle and the filter screen easy to break, affecting the life of the filter screen cartridge. Utility Model Content

[0004] In order to solve the above deficiencies in the prior art, the utility model aims to provide a desulfurization tower inlet filter to improve the fixing method of the filter screen cylinder, so that the filter screen cylinder is more stably stressed and not easily damaged.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: a desulfurization tower inlet filter, comprising a shell with a top opening, a top cover that can be detachably snapped into the opening of the shell, and a filter mesh cylinder that can be detachably arranged in the shell, a material inlet and a material outlet opposite to the material inlet are provided on the side wall of the shell, the material inlet extends into the shell, and a material inlet hole that is compatible with the material inlet is provided on the side wall of the filter mesh cylinder, so that the end of the material inlet extending to the shell is inserted into the material inlet hole, the upper end face of the filter mesh cylinder is horizontally arranged, and the height of the filter mesh cylinder is adapted to the internal height of the shell, so that the top cover is buckled and abuts against the upper end face of the filter mesh cylinder.

[0006] As a limitation of the present utility model: Inside the bottom wall of the housing, there is fixedly provided a flange that extends upward and is used to support the filter mesh cylinder. The cross-sectional dimension of the flange is smaller than the cross-sectional dimension of the filter mesh cylinder. The height of the filter mesh cylinder is adapted to the internal height of the housing with the flange, so that after the top cover is buckled, it abuts against the upper end surface of the filter mesh cylinder.

[0007] As a limitation of the present utility model: At the bottom of the side wall of the housing, there is provided a sewage cleaning port.

[0008] As a limitation of the present utility model: An exhaust port is provided on the top cover.

[0009] As a limitation of the present utility model: A handle is provided at the top of the filter mesh cylinder.

[0010] As a limitation of the present utility model: The housing is cylindrical.

[0011] As a limitation of the present utility model: The cross-sections of the material inlet and the material outlet are both circular.

[0012] As a limitation of the present utility model: The materials of the housing, the top cover, the filter mesh cylinder, the material inlet, and the material outlet are all fiberglass.

[0013] Due to the adoption of the above technical solution, compared with the prior art, the beneficial effects obtained by the present utility model are as follows:

[0014] The upper end surface of the filter mesh cylinder of the present utility model is horizontally arranged. Compared with the existing inclined upper end surface, the contact surface between the filter mesh cylinder and the top cover is annular, the force is more balanced, the stability of the filter mesh cylinder is improved, and because the improved filter mesh cylinder mainly receives extrusion stress and the force line is larger, it is not easily damaged, thus improving the service life of the filter mesh cylinder; In order to better cooperate with the material inlet, the material inlet is extended into the housing, and a material inlet hole is opened on the filter mesh cylinder, so that the material inlet is inserted into the filter mesh cylinder, and the material is directly introduced into the filter mesh cylinder, ensuring that all materials can pass through the filter, and further improving the structural stability; Further, the structures such as the housing, the top cover, and the filter mesh cylinder of the present utility model are all made of fiberglass, which has corrosion resistance and easy processability.

[0015] To sum up, the contact surface between the filter mesh cylinder and the top cover of the present utility model is annular, the force is more balanced, the stability of the filter mesh cylinder is improved, and the filter mesh cylinder mainly receives extrusion stress and the force line is larger, making it not easily damaged, thus improving the service life of the filter mesh cylinder. It is suitable for filtering impurities, especially for filtering impurities at the inlet of the desulfurization tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0017] Figure 1This is a partial cross-sectional view of an embodiment of the present utility model;

[0018] Figure 2 This is a cross-sectional view of the filter cartridge in an embodiment of the present utility model;

[0019] Figure 3 This is a top view of an embodiment of the present utility model.

[0020] In the figure: 1 - outer shell, 2 - material inlet, 3 - material outlet, 4 - cleaning port, 5 - top cover, 6 - exhaust port, 7 - filter cartridge, 8 - filter holes, 9 - material inlet hole, 10 - convex edge. Specific embodiments

[0021] The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings. It should be understood that the desulfurization tower inlet filter described herein is a preferred embodiment, which is only used to illustrate and explain the present utility model and does not constitute a limitation to the present utility model.

[0022] The orientation terms or positional relationships such as "upper", "lower", "left", "right", etc. described in the present utility model are based on the orientation relationship of the drawings in the specification of the present utility model. It is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the content protected by the present utility model. Embodiment

[0023] As shown in this embodiment Figures 1 to 3 A desulfurization tower inlet filter includes an outer shell 1 with an open top, a top cover 5 detachably buckled at the opening of the outer shell 1, and a filter cartridge 7 detachably arranged in the outer shell 1. A material inlet 2 and a material outlet 3 opposite to the material inlet 2 are provided on the side wall of the outer shell 1.

[0024] Specifically, the main body of the outer shell 1 is a cylindrical shape with an open top, made of fiberglass material, having excellent wear-resistant and corrosion-resistant properties. In this embodiment, the inner diameter of the outer shell 1 is 600 mm. On one side of the side wall of the outer shell 1, a cylindrical material inlet 2 is communicatively provided, and on the other side of the side wall of the outer shell 1, a cylindrical material outlet 3 is communicatively provided. That is, the cross-sections of both the material inlet 2 and the material outlet 3 are circular, the axes of both the material inlet 2 and the material outlet 3 are arranged horizontally, and connection flanges are fixedly provided on the sides where the material inlet 2 and the material outlet 3 extend out of the main body of the outer shell 1, for connecting with the upstream and downstream components of the inlet filter. In this embodiment, the inner diameters of both the material inlet 2 and the material outlet 3 are 150 mm. A cleaning port 4 is opened at the bottom of the side wall of the outer shell 1. Similarly, the cleaning port 4 is also a cylindrical structure with its axis arranged horizontally, and a connection flange is also fixedly provided on the side where the cleaning port 4 extends out of the main body of the outer shell 1, for connecting with the dirt discharging device. A cylindrical flange extending outward is integrally provided at the top edge of the outer shell 1, and a plurality of mounting holes are circumferentially arrayed on the cylindrical flange. The top of the outer shell 1 is detachably connected with a top cover 5 through threaded fasteners in the mounting holes. The main body of the top cover 5 is circular, and mounting holes corresponding to those on the cylindrical flange are circumferentially arrayed on the top cover 5. An exhaust port 6 is provided at the center of the top cover 5. The material inlet 2, the material outlet 3, the cleaning port 4, the top cover 5, and the exhaust port 6 are all made of fiberglass material.

[0025] The filter mesh cylinder 7 is detachably arranged in the outer shell 1. Specifically, as Figure 2 shown, the filter mesh cylinder 7 is a cylindrical shape with an open top, made of fiberglass material. In this embodiment, the inner diameter of the filter mesh cylinder 7 is 400 mm, and filter holes 8 are evenly distributed on the filter mesh cylinder 7 ( Figure 2Only the cut-away part and the local part show the filter holes 8). The diameter of the filter holes 8 in this embodiment is 5 mm, and the center distance between two adjacent filter holes 8 is 12 mm. In order to make all the materials in the material inlet 2 pass through the filter mesh cylinder 7, the material inlet 2 extends into the housing 1. A circular material inlet hole 9 adapted to the material inlet 2 is provided on the side wall of the filter mesh cylinder 7, so that the end of the material inlet 2 extending into the housing 1 is inserted into the material inlet hole 9. In order to fix the filter mesh cylinder 7, the upper end face of the filter mesh cylinder 7 is horizontally arranged, and the height of the filter mesh cylinder 7 is adapted to the internal height of the housing 1, so that the top cover 5 abuts against the upper end face of the filter mesh cylinder 7 after being buckled. Further, a convex edge 10 extending upward for supporting the filter mesh cylinder 7 is integrally provided inside the bottom wall of the housing 1. The cross-sectional dimension of the convex edge 10 is smaller than the cross-sectional dimension of the filter mesh cylinder 7. The height of the filter mesh cylinder 7 is adapted to the internal height of the housing 1 with the convex edge 10, that is, the height of the filter mesh cylinder 7 is equal to or slightly greater than the distance between the lower edge of the buckled top cover 5 and the upper edge of the convex edge 10, so that the top cover 5 abuts against the upper end face of the filter mesh cylinder 7 after being buckled, and the filter mesh cylinder 7 is fixed by the clamping of the buckled top cover 5 and the convex edge 10. It should be noted that the convex edge 10 can be an upward-extending annular structure or a plurality of discontinuous arc-shaped structures. The convex edge 10 in this embodiment is a plurality of discontinuous arc-shaped structures, which is convenient for the discharge of materials. In order to facilitate the removal of the filter mesh cylinder 7 and the discharge of the filtered impurities therein, a pair of handles (not shown in the figure) are hinged at the top of the filter mesh cylinder 7.

[0026] When using this embodiment, the desulfurization slurry enters the filter mesh cylinder 7 from the material inlet 2, is filtered through the filter holes 8, and is discharged from the material outlet 3. The large-particle impurities remain in the filter mesh cylinder 7. After using for a period of time, open the top cover 5 to relieve the pressure of the top cover 5 on the filter mesh cylinder 7, draw out the filter mesh cylinder 7 from the material inlet 2, take out the filter mesh cylinder 7 through the handle, pour out the large-particle impurities in the filter mesh cylinder 7, then put the filter mesh cylinder 7 into the housing 1, push the filter mesh cylinder 7 sideways to make the material inlet 2 insert into the material inlet hole 9 of the filter mesh cylinder 7, buckle the top cover 5, and make the top cover 5 and the convex edge 10 clamp the filter mesh cylinder 7 together to be used again.

Claims

1. A desulfurization tower inlet filter, comprising a housing with an opening at the top, a top cover detachably buckled at the opening of the housing, and a filter mesh cylinder detachably arranged in the housing. A material inlet and a material outlet opposite to the material inlet are formed on the side wall of the housing. It is characterized in that: The material inlet extends into the housing. The side wall of the filter screen cylinder is provided with a material inlet hole adapted to the material inlet, so that the end of the material inlet extending into the housing is inserted into the material inlet hole. The upper end surface of the filter screen cylinder is horizontally arranged, and the height of the filter screen cylinder is adapted to the internal height of the housing, so that after the top cover is buckled, it abuts against the upper end surface of the filter screen cylinder.

2. The desulfurization tower inlet filter according to claim 1, wherein Inside the bottom wall of the housing, there is a convex edge extending upward for supporting the filter screen cylinder. The cross-sectional dimension of the convex edge is smaller than the cross-sectional dimension of the filter screen cylinder. The height of the filter screen cylinder is adapted to the internal height of the housing with the convex edge, so that after the top cover is buckled, it abuts against the upper end surface of the filter screen cylinder.

3. The desulfurization tower inlet filter according to claim 2, wherein: A cleaning port is provided at the bottom of the side wall of the housing.

4. The desulfurization tower inlet filter according to claim 3, characterized in that: An exhaust port is provided on the top cover.

5. The desulfurization tower inlet filter according to claim 4, characterized in that: A handle is provided at the top of the filter screen cylinder.

6. The desulfurization tower inlet filter according to any one of claims 1 to 5, characterized in that: The housing is cylindrical.

7. The desulfurization tower inlet filter according to claim 6, wherein: The cross-sections of the material inlet and the material outlet are both circular.

8. The desulfurization tower inlet filter according to claim 7, wherein: The materials of the housing, the top cover, the filter screen cylinder, the material inlet and the material outlet are all fiberglass.

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